Mercurial > hg > graal-compiler
annotate src/cpu/sparc/vm/assembler_sparc.cpp @ 2230:55cc33cf55bc
7018257: jmm_DumpThreads allocates into permgen
Summary: Don't allocate in permgen
Reviewed-by: ysr, sla
author | stefank |
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date | Fri, 11 Feb 2011 14:15:16 +0100 |
parents | 5577848f5923 |
children | 28bf941f445e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/assembler.hpp" |
1972 | 27 #include "assembler_sparc.inline.hpp" |
28 #include "gc_interface/collectedHeap.inline.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "memory/cardTableModRefBS.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "prims/methodHandles.hpp" | |
33 #include "runtime/biasedLocking.hpp" | |
34 #include "runtime/interfaceSupport.hpp" | |
35 #include "runtime/objectMonitor.hpp" | |
36 #include "runtime/os.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/stubRoutines.hpp" | |
39 #ifndef SERIALGC | |
40 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
41 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" | |
42 #include "gc_implementation/g1/heapRegion.hpp" | |
43 #endif | |
0 | 44 |
727 | 45 // Convert the raw encoding form into the form expected by the |
46 // constructor for Address. | |
47 Address Address::make_raw(int base, int index, int scale, int disp, bool disp_is_oop) { | |
48 assert(scale == 0, "not supported"); | |
49 RelocationHolder rspec; | |
50 if (disp_is_oop) { | |
51 rspec = Relocation::spec_simple(relocInfo::oop_type); | |
0 | 52 } |
727 | 53 |
54 Register rindex = as_Register(index); | |
55 if (rindex != G0) { | |
56 Address madr(as_Register(base), rindex); | |
57 madr._rspec = rspec; | |
58 return madr; | |
59 } else { | |
60 Address madr(as_Register(base), disp); | |
61 madr._rspec = rspec; | |
62 return madr; | |
63 } | |
64 } | |
65 | |
66 Address Argument::address_in_frame() const { | |
67 // Warning: In LP64 mode disp will occupy more than 10 bits, but | |
68 // op codes such as ld or ldx, only access disp() to get | |
69 // their simm13 argument. | |
70 int disp = ((_number - Argument::n_register_parameters + frame::memory_parameter_word_sp_offset) * BytesPerWord) + STACK_BIAS; | |
71 if (is_in()) | |
72 return Address(FP, disp); // In argument. | |
73 else | |
74 return Address(SP, disp); // Out argument. | |
0 | 75 } |
76 | |
77 static const char* argumentNames[][2] = { | |
78 {"A0","P0"}, {"A1","P1"}, {"A2","P2"}, {"A3","P3"}, {"A4","P4"}, | |
79 {"A5","P5"}, {"A6","P6"}, {"A7","P7"}, {"A8","P8"}, {"A9","P9"}, | |
80 {"A(n>9)","P(n>9)"} | |
81 }; | |
82 | |
83 const char* Argument::name() const { | |
84 int nofArgs = sizeof argumentNames / sizeof argumentNames[0]; | |
85 int num = number(); | |
86 if (num >= nofArgs) num = nofArgs - 1; | |
87 return argumentNames[num][is_in() ? 1 : 0]; | |
88 } | |
89 | |
90 void Assembler::print_instruction(int inst) { | |
91 const char* s; | |
92 switch (inv_op(inst)) { | |
93 default: s = "????"; break; | |
94 case call_op: s = "call"; break; | |
95 case branch_op: | |
96 switch (inv_op2(inst)) { | |
97 case bpr_op2: s = "bpr"; break; | |
98 case fb_op2: s = "fb"; break; | |
99 case fbp_op2: s = "fbp"; break; | |
100 case br_op2: s = "br"; break; | |
101 case bp_op2: s = "bp"; break; | |
102 case cb_op2: s = "cb"; break; | |
103 default: s = "????"; break; | |
104 } | |
105 } | |
106 ::tty->print("%s", s); | |
107 } | |
108 | |
109 | |
110 // Patch instruction inst at offset inst_pos to refer to dest_pos | |
111 // and return the resulting instruction. | |
112 // We should have pcs, not offsets, but since all is relative, it will work out | |
113 // OK. | |
114 int Assembler::patched_branch(int dest_pos, int inst, int inst_pos) { | |
115 | |
116 int m; // mask for displacement field | |
117 int v; // new value for displacement field | |
118 const int word_aligned_ones = -4; | |
119 switch (inv_op(inst)) { | |
120 default: ShouldNotReachHere(); | |
121 case call_op: m = wdisp(word_aligned_ones, 0, 30); v = wdisp(dest_pos, inst_pos, 30); break; | |
122 case branch_op: | |
123 switch (inv_op2(inst)) { | |
124 case bpr_op2: m = wdisp16(word_aligned_ones, 0); v = wdisp16(dest_pos, inst_pos); break; | |
125 case fbp_op2: m = wdisp( word_aligned_ones, 0, 19); v = wdisp( dest_pos, inst_pos, 19); break; | |
126 case bp_op2: m = wdisp( word_aligned_ones, 0, 19); v = wdisp( dest_pos, inst_pos, 19); break; | |
127 case fb_op2: m = wdisp( word_aligned_ones, 0, 22); v = wdisp( dest_pos, inst_pos, 22); break; | |
128 case br_op2: m = wdisp( word_aligned_ones, 0, 22); v = wdisp( dest_pos, inst_pos, 22); break; | |
129 case cb_op2: m = wdisp( word_aligned_ones, 0, 22); v = wdisp( dest_pos, inst_pos, 22); break; | |
130 default: ShouldNotReachHere(); | |
131 } | |
132 } | |
133 return inst & ~m | v; | |
134 } | |
135 | |
136 // Return the offset of the branch destionation of instruction inst | |
137 // at offset pos. | |
138 // Should have pcs, but since all is relative, it works out. | |
139 int Assembler::branch_destination(int inst, int pos) { | |
140 int r; | |
141 switch (inv_op(inst)) { | |
142 default: ShouldNotReachHere(); | |
143 case call_op: r = inv_wdisp(inst, pos, 30); break; | |
144 case branch_op: | |
145 switch (inv_op2(inst)) { | |
146 case bpr_op2: r = inv_wdisp16(inst, pos); break; | |
147 case fbp_op2: r = inv_wdisp( inst, pos, 19); break; | |
148 case bp_op2: r = inv_wdisp( inst, pos, 19); break; | |
149 case fb_op2: r = inv_wdisp( inst, pos, 22); break; | |
150 case br_op2: r = inv_wdisp( inst, pos, 22); break; | |
151 case cb_op2: r = inv_wdisp( inst, pos, 22); break; | |
152 default: ShouldNotReachHere(); | |
153 } | |
154 } | |
155 return r; | |
156 } | |
157 | |
158 int AbstractAssembler::code_fill_byte() { | |
159 return 0x00; // illegal instruction 0x00000000 | |
160 } | |
161 | |
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162 Assembler::Condition Assembler::reg_cond_to_cc_cond(Assembler::RCondition in) { |
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163 switch (in) { |
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164 case rc_z: return equal; |
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165 case rc_lez: return lessEqual; |
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166 case rc_lz: return less; |
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167 case rc_nz: return notEqual; |
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168 case rc_gz: return greater; |
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169 case rc_gez: return greaterEqual; |
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170 default: |
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171 ShouldNotReachHere(); |
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172 } |
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173 return equal; |
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174 } |
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175 |
0 | 176 // Generate a bunch 'o stuff (including v9's |
177 #ifndef PRODUCT | |
178 void Assembler::test_v9() { | |
179 add( G0, G1, G2 ); | |
180 add( G3, 0, G4 ); | |
181 | |
182 addcc( G5, G6, G7 ); | |
183 addcc( I0, 1, I1 ); | |
184 addc( I2, I3, I4 ); | |
185 addc( I5, -1, I6 ); | |
186 addccc( I7, L0, L1 ); | |
187 addccc( L2, (1 << 12) - 2, L3 ); | |
188 | |
189 Label lbl1, lbl2, lbl3; | |
190 | |
191 bind(lbl1); | |
192 | |
193 bpr( rc_z, true, pn, L4, pc(), relocInfo::oop_type ); | |
194 delayed()->nop(); | |
195 bpr( rc_lez, false, pt, L5, lbl1); | |
196 delayed()->nop(); | |
197 | |
198 fb( f_never, true, pc() + 4, relocInfo::none); | |
199 delayed()->nop(); | |
200 fb( f_notEqual, false, lbl2 ); | |
201 delayed()->nop(); | |
202 | |
203 fbp( f_notZero, true, fcc0, pn, pc() - 4, relocInfo::none); | |
204 delayed()->nop(); | |
205 fbp( f_lessOrGreater, false, fcc1, pt, lbl3 ); | |
206 delayed()->nop(); | |
207 | |
208 br( equal, true, pc() + 1024, relocInfo::none); | |
209 delayed()->nop(); | |
210 br( lessEqual, false, lbl1 ); | |
211 delayed()->nop(); | |
212 br( never, false, lbl1 ); | |
213 delayed()->nop(); | |
214 | |
215 bp( less, true, icc, pn, pc(), relocInfo::none); | |
216 delayed()->nop(); | |
217 bp( lessEqualUnsigned, false, xcc, pt, lbl2 ); | |
218 delayed()->nop(); | |
219 | |
220 call( pc(), relocInfo::none); | |
221 delayed()->nop(); | |
222 call( lbl3 ); | |
223 delayed()->nop(); | |
224 | |
225 | |
226 casa( L6, L7, O0 ); | |
227 casxa( O1, O2, O3, 0 ); | |
228 | |
229 udiv( O4, O5, O7 ); | |
230 udiv( G0, (1 << 12) - 1, G1 ); | |
231 sdiv( G1, G2, G3 ); | |
232 sdiv( G4, -((1 << 12) - 1), G5 ); | |
233 udivcc( G6, G7, I0 ); | |
234 udivcc( I1, -((1 << 12) - 2), I2 ); | |
235 sdivcc( I3, I4, I5 ); | |
236 sdivcc( I6, -((1 << 12) - 0), I7 ); | |
237 | |
238 done(); | |
239 retry(); | |
240 | |
241 fadd( FloatRegisterImpl::S, F0, F1, F2 ); | |
242 fsub( FloatRegisterImpl::D, F34, F0, F62 ); | |
243 | |
244 fcmp( FloatRegisterImpl::Q, fcc0, F0, F60); | |
245 fcmpe( FloatRegisterImpl::S, fcc1, F31, F30); | |
246 | |
247 ftox( FloatRegisterImpl::D, F2, F4 ); | |
248 ftoi( FloatRegisterImpl::Q, F4, F8 ); | |
249 | |
250 ftof( FloatRegisterImpl::S, FloatRegisterImpl::Q, F3, F12 ); | |
251 | |
252 fxtof( FloatRegisterImpl::S, F4, F5 ); | |
253 fitof( FloatRegisterImpl::D, F6, F8 ); | |
254 | |
255 fmov( FloatRegisterImpl::Q, F16, F20 ); | |
256 fneg( FloatRegisterImpl::S, F6, F7 ); | |
257 fabs( FloatRegisterImpl::D, F10, F12 ); | |
258 | |
259 fmul( FloatRegisterImpl::Q, F24, F28, F32 ); | |
260 fmul( FloatRegisterImpl::S, FloatRegisterImpl::D, F8, F9, F14 ); | |
261 fdiv( FloatRegisterImpl::S, F10, F11, F12 ); | |
262 | |
263 fsqrt( FloatRegisterImpl::S, F13, F14 ); | |
264 | |
265 flush( L0, L1 ); | |
266 flush( L2, -1 ); | |
267 | |
268 flushw(); | |
269 | |
270 illtrap( (1 << 22) - 2); | |
271 | |
272 impdep1( 17, (1 << 19) - 1 ); | |
273 impdep2( 3, 0 ); | |
274 | |
275 jmpl( L3, L4, L5 ); | |
276 delayed()->nop(); | |
277 jmpl( L6, -1, L7, Relocation::spec_simple(relocInfo::none)); | |
278 delayed()->nop(); | |
279 | |
280 | |
281 ldf( FloatRegisterImpl::S, O0, O1, F15 ); | |
282 ldf( FloatRegisterImpl::D, O2, -1, F14 ); | |
283 | |
284 | |
285 ldfsr( O3, O4 ); | |
286 ldfsr( O5, -1 ); | |
287 ldxfsr( O6, O7 ); | |
288 ldxfsr( I0, -1 ); | |
289 | |
290 ldfa( FloatRegisterImpl::D, I1, I2, 1, F16 ); | |
291 ldfa( FloatRegisterImpl::Q, I3, -1, F36 ); | |
292 | |
293 ldsb( I4, I5, I6 ); | |
294 ldsb( I7, -1, G0 ); | |
295 ldsh( G1, G3, G4 ); | |
296 ldsh( G5, -1, G6 ); | |
297 ldsw( G7, L0, L1 ); | |
298 ldsw( L2, -1, L3 ); | |
299 ldub( L4, L5, L6 ); | |
300 ldub( L7, -1, O0 ); | |
301 lduh( O1, O2, O3 ); | |
302 lduh( O4, -1, O5 ); | |
303 lduw( O6, O7, G0 ); | |
304 lduw( G1, -1, G2 ); | |
305 ldx( G3, G4, G5 ); | |
306 ldx( G6, -1, G7 ); | |
307 ldd( I0, I1, I2 ); | |
308 ldd( I3, -1, I4 ); | |
309 | |
310 ldsba( I5, I6, 2, I7 ); | |
311 ldsba( L0, -1, L1 ); | |
312 ldsha( L2, L3, 3, L4 ); | |
313 ldsha( L5, -1, L6 ); | |
314 ldswa( L7, O0, (1 << 8) - 1, O1 ); | |
315 ldswa( O2, -1, O3 ); | |
316 lduba( O4, O5, 0, O6 ); | |
317 lduba( O7, -1, I0 ); | |
318 lduha( I1, I2, 1, I3 ); | |
319 lduha( I4, -1, I5 ); | |
320 lduwa( I6, I7, 2, L0 ); | |
321 lduwa( L1, -1, L2 ); | |
322 ldxa( L3, L4, 3, L5 ); | |
323 ldxa( L6, -1, L7 ); | |
324 ldda( G0, G1, 4, G2 ); | |
325 ldda( G3, -1, G4 ); | |
326 | |
327 ldstub( G5, G6, G7 ); | |
328 ldstub( O0, -1, O1 ); | |
329 | |
330 ldstuba( O2, O3, 5, O4 ); | |
331 ldstuba( O5, -1, O6 ); | |
332 | |
333 and3( I0, L0, O0 ); | |
334 and3( G7, -1, O7 ); | |
335 andcc( L2, I2, G2 ); | |
336 andcc( L4, -1, G4 ); | |
337 andn( I5, I6, I7 ); | |
338 andn( I6, -1, I7 ); | |
339 andncc( I5, I6, I7 ); | |
340 andncc( I7, -1, I6 ); | |
341 or3( I5, I6, I7 ); | |
342 or3( I7, -1, I6 ); | |
343 orcc( I5, I6, I7 ); | |
344 orcc( I7, -1, I6 ); | |
345 orn( I5, I6, I7 ); | |
346 orn( I7, -1, I6 ); | |
347 orncc( I5, I6, I7 ); | |
348 orncc( I7, -1, I6 ); | |
349 xor3( I5, I6, I7 ); | |
350 xor3( I7, -1, I6 ); | |
351 xorcc( I5, I6, I7 ); | |
352 xorcc( I7, -1, I6 ); | |
353 xnor( I5, I6, I7 ); | |
354 xnor( I7, -1, I6 ); | |
355 xnorcc( I5, I6, I7 ); | |
356 xnorcc( I7, -1, I6 ); | |
357 | |
358 membar( Membar_mask_bits(StoreStore | LoadStore | StoreLoad | LoadLoad | Sync | MemIssue | Lookaside ) ); | |
359 membar( StoreStore ); | |
360 membar( LoadStore ); | |
361 membar( StoreLoad ); | |
362 membar( LoadLoad ); | |
363 membar( Sync ); | |
364 membar( MemIssue ); | |
365 membar( Lookaside ); | |
366 | |
367 fmov( FloatRegisterImpl::S, f_ordered, true, fcc2, F16, F17 ); | |
368 fmov( FloatRegisterImpl::D, rc_lz, L5, F18, F20 ); | |
369 | |
370 movcc( overflowClear, false, icc, I6, L4 ); | |
371 movcc( f_unorderedOrEqual, true, fcc2, (1 << 10) - 1, O0 ); | |
372 | |
373 movr( rc_nz, I5, I6, I7 ); | |
374 movr( rc_gz, L1, -1, L2 ); | |
375 | |
376 mulx( I5, I6, I7 ); | |
377 mulx( I7, -1, I6 ); | |
378 sdivx( I5, I6, I7 ); | |
379 sdivx( I7, -1, I6 ); | |
380 udivx( I5, I6, I7 ); | |
381 udivx( I7, -1, I6 ); | |
382 | |
383 umul( I5, I6, I7 ); | |
384 umul( I7, -1, I6 ); | |
385 smul( I5, I6, I7 ); | |
386 smul( I7, -1, I6 ); | |
387 umulcc( I5, I6, I7 ); | |
388 umulcc( I7, -1, I6 ); | |
389 smulcc( I5, I6, I7 ); | |
390 smulcc( I7, -1, I6 ); | |
391 | |
392 mulscc( I5, I6, I7 ); | |
393 mulscc( I7, -1, I6 ); | |
394 | |
395 nop(); | |
396 | |
397 | |
398 popc( G0, G1); | |
399 popc( -1, G2); | |
400 | |
401 prefetch( L1, L2, severalReads ); | |
402 prefetch( L3, -1, oneRead ); | |
403 prefetcha( O3, O2, 6, severalWritesAndPossiblyReads ); | |
404 prefetcha( G2, -1, oneWrite ); | |
405 | |
406 rett( I7, I7); | |
407 delayed()->nop(); | |
408 rett( G0, -1, relocInfo::none); | |
409 delayed()->nop(); | |
410 | |
411 save( I5, I6, I7 ); | |
412 save( I7, -1, I6 ); | |
413 restore( I5, I6, I7 ); | |
414 restore( I7, -1, I6 ); | |
415 | |
416 saved(); | |
417 restored(); | |
418 | |
419 sethi( 0xaaaaaaaa, I3, Relocation::spec_simple(relocInfo::none)); | |
420 | |
421 sll( I5, I6, I7 ); | |
422 sll( I7, 31, I6 ); | |
423 srl( I5, I6, I7 ); | |
424 srl( I7, 0, I6 ); | |
425 sra( I5, I6, I7 ); | |
426 sra( I7, 30, I6 ); | |
427 sllx( I5, I6, I7 ); | |
428 sllx( I7, 63, I6 ); | |
429 srlx( I5, I6, I7 ); | |
430 srlx( I7, 0, I6 ); | |
431 srax( I5, I6, I7 ); | |
432 srax( I7, 62, I6 ); | |
433 | |
434 sir( -1 ); | |
435 | |
436 stbar(); | |
437 | |
438 stf( FloatRegisterImpl::Q, F40, G0, I7 ); | |
439 stf( FloatRegisterImpl::S, F18, I3, -1 ); | |
440 | |
441 stfsr( L1, L2 ); | |
442 stfsr( I7, -1 ); | |
443 stxfsr( I6, I5 ); | |
444 stxfsr( L4, -1 ); | |
445 | |
446 stfa( FloatRegisterImpl::D, F22, I6, I7, 7 ); | |
447 stfa( FloatRegisterImpl::Q, F44, G0, -1 ); | |
448 | |
449 stb( L5, O2, I7 ); | |
450 stb( I7, I6, -1 ); | |
451 sth( L5, O2, I7 ); | |
452 sth( I7, I6, -1 ); | |
453 stw( L5, O2, I7 ); | |
454 stw( I7, I6, -1 ); | |
455 stx( L5, O2, I7 ); | |
456 stx( I7, I6, -1 ); | |
457 std( L5, O2, I7 ); | |
458 std( I7, I6, -1 ); | |
459 | |
460 stba( L5, O2, I7, 8 ); | |
461 stba( I7, I6, -1 ); | |
462 stha( L5, O2, I7, 9 ); | |
463 stha( I7, I6, -1 ); | |
464 stwa( L5, O2, I7, 0 ); | |
465 stwa( I7, I6, -1 ); | |
466 stxa( L5, O2, I7, 11 ); | |
467 stxa( I7, I6, -1 ); | |
468 stda( L5, O2, I7, 12 ); | |
469 stda( I7, I6, -1 ); | |
470 | |
471 sub( I5, I6, I7 ); | |
472 sub( I7, -1, I6 ); | |
473 subcc( I5, I6, I7 ); | |
474 subcc( I7, -1, I6 ); | |
475 subc( I5, I6, I7 ); | |
476 subc( I7, -1, I6 ); | |
477 subccc( I5, I6, I7 ); | |
478 subccc( I7, -1, I6 ); | |
479 | |
480 swap( I5, I6, I7 ); | |
481 swap( I7, -1, I6 ); | |
482 | |
483 swapa( G0, G1, 13, G2 ); | |
484 swapa( I7, -1, I6 ); | |
485 | |
486 taddcc( I5, I6, I7 ); | |
487 taddcc( I7, -1, I6 ); | |
488 taddcctv( I5, I6, I7 ); | |
489 taddcctv( I7, -1, I6 ); | |
490 | |
491 tsubcc( I5, I6, I7 ); | |
492 tsubcc( I7, -1, I6 ); | |
493 tsubcctv( I5, I6, I7 ); | |
494 tsubcctv( I7, -1, I6 ); | |
495 | |
496 trap( overflowClear, xcc, G0, G1 ); | |
497 trap( lessEqual, icc, I7, 17 ); | |
498 | |
499 bind(lbl2); | |
500 bind(lbl3); | |
501 | |
502 code()->decode(); | |
503 } | |
504 | |
505 // Generate a bunch 'o stuff unique to V8 | |
506 void Assembler::test_v8_onlys() { | |
507 Label lbl1; | |
508 | |
509 cb( cp_0or1or2, false, pc() - 4, relocInfo::none); | |
510 delayed()->nop(); | |
511 cb( cp_never, true, lbl1); | |
512 delayed()->nop(); | |
513 | |
514 cpop1(1, 2, 3, 4); | |
515 cpop2(5, 6, 7, 8); | |
516 | |
517 ldc( I0, I1, 31); | |
518 ldc( I2, -1, 0); | |
519 | |
520 lddc( I4, I4, 30); | |
521 lddc( I6, 0, 1 ); | |
522 | |
523 ldcsr( L0, L1, 0); | |
524 ldcsr( L1, (1 << 12) - 1, 17 ); | |
525 | |
526 stc( 31, L4, L5); | |
527 stc( 30, L6, -(1 << 12) ); | |
528 | |
529 stdc( 0, L7, G0); | |
530 stdc( 1, G1, 0 ); | |
531 | |
532 stcsr( 16, G2, G3); | |
533 stcsr( 17, G4, 1 ); | |
534 | |
535 stdcq( 4, G5, G6); | |
536 stdcq( 5, G7, -1 ); | |
537 | |
538 bind(lbl1); | |
539 | |
540 code()->decode(); | |
541 } | |
542 #endif | |
543 | |
544 // Implementation of MacroAssembler | |
545 | |
546 void MacroAssembler::null_check(Register reg, int offset) { | |
547 if (needs_explicit_null_check((intptr_t)offset)) { | |
548 // provoke OS NULL exception if reg = NULL by | |
549 // accessing M[reg] w/o changing any registers | |
550 ld_ptr(reg, 0, G0); | |
551 } | |
552 else { | |
553 // nothing to do, (later) access of M[reg + offset] | |
554 // will provoke OS NULL exception if reg = NULL | |
555 } | |
556 } | |
557 | |
558 // Ring buffer jumps | |
559 | |
560 #ifndef PRODUCT | |
561 void MacroAssembler::ret( bool trace ) { if (trace) { | |
562 mov(I7, O7); // traceable register | |
563 JMP(O7, 2 * BytesPerInstWord); | |
564 } else { | |
565 jmpl( I7, 2 * BytesPerInstWord, G0 ); | |
566 } | |
567 } | |
568 | |
569 void MacroAssembler::retl( bool trace ) { if (trace) JMP(O7, 2 * BytesPerInstWord); | |
570 else jmpl( O7, 2 * BytesPerInstWord, G0 ); } | |
571 #endif /* PRODUCT */ | |
572 | |
573 | |
574 void MacroAssembler::jmp2(Register r1, Register r2, const char* file, int line ) { | |
575 assert_not_delayed(); | |
576 // This can only be traceable if r1 & r2 are visible after a window save | |
577 if (TraceJumps) { | |
578 #ifndef PRODUCT | |
579 save_frame(0); | |
580 verify_thread(); | |
581 ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0); | |
582 add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1); | |
583 sll(O0, exact_log2(4*sizeof(intptr_t)), O2); | |
584 add(O2, O1, O1); | |
585 | |
586 add(r1->after_save(), r2->after_save(), O2); | |
587 set((intptr_t)file, O3); | |
588 set(line, O4); | |
589 Label L; | |
590 // get nearby pc, store jmp target | |
591 call(L, relocInfo::none); // No relocation for call to pc+0x8 | |
592 delayed()->st(O2, O1, 0); | |
593 bind(L); | |
594 | |
595 // store nearby pc | |
596 st(O7, O1, sizeof(intptr_t)); | |
597 // store file | |
598 st(O3, O1, 2*sizeof(intptr_t)); | |
599 // store line | |
600 st(O4, O1, 3*sizeof(intptr_t)); | |
601 add(O0, 1, O0); | |
602 and3(O0, JavaThread::jump_ring_buffer_size - 1, O0); | |
603 st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset())); | |
604 restore(); | |
605 #endif /* PRODUCT */ | |
606 } | |
607 jmpl(r1, r2, G0); | |
608 } | |
609 void MacroAssembler::jmp(Register r1, int offset, const char* file, int line ) { | |
610 assert_not_delayed(); | |
611 // This can only be traceable if r1 is visible after a window save | |
612 if (TraceJumps) { | |
613 #ifndef PRODUCT | |
614 save_frame(0); | |
615 verify_thread(); | |
616 ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0); | |
617 add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1); | |
618 sll(O0, exact_log2(4*sizeof(intptr_t)), O2); | |
619 add(O2, O1, O1); | |
620 | |
621 add(r1->after_save(), offset, O2); | |
622 set((intptr_t)file, O3); | |
623 set(line, O4); | |
624 Label L; | |
625 // get nearby pc, store jmp target | |
626 call(L, relocInfo::none); // No relocation for call to pc+0x8 | |
627 delayed()->st(O2, O1, 0); | |
628 bind(L); | |
629 | |
630 // store nearby pc | |
631 st(O7, O1, sizeof(intptr_t)); | |
632 // store file | |
633 st(O3, O1, 2*sizeof(intptr_t)); | |
634 // store line | |
635 st(O4, O1, 3*sizeof(intptr_t)); | |
636 add(O0, 1, O0); | |
637 and3(O0, JavaThread::jump_ring_buffer_size - 1, O0); | |
638 st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset())); | |
639 restore(); | |
640 #endif /* PRODUCT */ | |
641 } | |
642 jmp(r1, offset); | |
643 } | |
644 | |
645 // This code sequence is relocatable to any address, even on LP64. | |
1680
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646 void MacroAssembler::jumpl(const AddressLiteral& addrlit, Register temp, Register d, int offset, const char* file, int line) { |
0 | 647 assert_not_delayed(); |
648 // Force fixed length sethi because NativeJump and NativeFarCall don't handle | |
649 // variable length instruction streams. | |
727 | 650 patchable_sethi(addrlit, temp); |
651 Address a(temp, addrlit.low10() + offset); // Add the offset to the displacement. | |
0 | 652 if (TraceJumps) { |
653 #ifndef PRODUCT | |
654 // Must do the add here so relocation can find the remainder of the | |
655 // value to be relocated. | |
727 | 656 add(a.base(), a.disp(), a.base(), addrlit.rspec(offset)); |
0 | 657 save_frame(0); |
658 verify_thread(); | |
659 ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0); | |
660 add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1); | |
661 sll(O0, exact_log2(4*sizeof(intptr_t)), O2); | |
662 add(O2, O1, O1); | |
663 | |
664 set((intptr_t)file, O3); | |
665 set(line, O4); | |
666 Label L; | |
667 | |
668 // get nearby pc, store jmp target | |
669 call(L, relocInfo::none); // No relocation for call to pc+0x8 | |
670 delayed()->st(a.base()->after_save(), O1, 0); | |
671 bind(L); | |
672 | |
673 // store nearby pc | |
674 st(O7, O1, sizeof(intptr_t)); | |
675 // store file | |
676 st(O3, O1, 2*sizeof(intptr_t)); | |
677 // store line | |
678 st(O4, O1, 3*sizeof(intptr_t)); | |
679 add(O0, 1, O0); | |
680 and3(O0, JavaThread::jump_ring_buffer_size - 1, O0); | |
681 st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset())); | |
682 restore(); | |
683 jmpl(a.base(), G0, d); | |
684 #else | |
727 | 685 jmpl(a.base(), a.disp(), d); |
0 | 686 #endif /* PRODUCT */ |
687 } else { | |
727 | 688 jmpl(a.base(), a.disp(), d); |
0 | 689 } |
690 } | |
691 | |
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692 void MacroAssembler::jump(const AddressLiteral& addrlit, Register temp, int offset, const char* file, int line) { |
727 | 693 jumpl(addrlit, temp, G0, offset, file, line); |
0 | 694 } |
695 | |
696 | |
697 // Convert to C varargs format | |
698 void MacroAssembler::set_varargs( Argument inArg, Register d ) { | |
699 // spill register-resident args to their memory slots | |
700 // (SPARC calling convention requires callers to have already preallocated these) | |
701 // Note that the inArg might in fact be an outgoing argument, | |
702 // if a leaf routine or stub does some tricky argument shuffling. | |
703 // This routine must work even though one of the saved arguments | |
704 // is in the d register (e.g., set_varargs(Argument(0, false), O0)). | |
705 for (Argument savePtr = inArg; | |
706 savePtr.is_register(); | |
707 savePtr = savePtr.successor()) { | |
708 st_ptr(savePtr.as_register(), savePtr.address_in_frame()); | |
709 } | |
710 // return the address of the first memory slot | |
727 | 711 Address a = inArg.address_in_frame(); |
712 add(a.base(), a.disp(), d); | |
0 | 713 } |
714 | |
715 // Conditional breakpoint (for assertion checks in assembly code) | |
716 void MacroAssembler::breakpoint_trap(Condition c, CC cc) { | |
717 trap(c, cc, G0, ST_RESERVED_FOR_USER_0); | |
718 } | |
719 | |
720 // We want to use ST_BREAKPOINT here, but the debugger is confused by it. | |
721 void MacroAssembler::breakpoint_trap() { | |
722 trap(ST_RESERVED_FOR_USER_0); | |
723 } | |
724 | |
725 // flush windows (except current) using flushw instruction if avail. | |
726 void MacroAssembler::flush_windows() { | |
727 if (VM_Version::v9_instructions_work()) flushw(); | |
728 else flush_windows_trap(); | |
729 } | |
730 | |
731 // Write serialization page so VM thread can do a pseudo remote membar | |
732 // We use the current thread pointer to calculate a thread specific | |
733 // offset to write to within the page. This minimizes bus traffic | |
734 // due to cache line collision. | |
735 void MacroAssembler::serialize_memory(Register thread, Register tmp1, Register tmp2) { | |
736 srl(thread, os::get_serialize_page_shift_count(), tmp2); | |
737 if (Assembler::is_simm13(os::vm_page_size())) { | |
738 and3(tmp2, (os::vm_page_size() - sizeof(int)), tmp2); | |
739 } | |
740 else { | |
741 set((os::vm_page_size() - sizeof(int)), tmp1); | |
742 and3(tmp2, tmp1, tmp2); | |
743 } | |
727 | 744 set(os::get_memory_serialize_page(), tmp1); |
0 | 745 st(G0, tmp1, tmp2); |
746 } | |
747 | |
748 | |
749 | |
750 void MacroAssembler::enter() { | |
751 Unimplemented(); | |
752 } | |
753 | |
754 void MacroAssembler::leave() { | |
755 Unimplemented(); | |
756 } | |
757 | |
758 void MacroAssembler::mult(Register s1, Register s2, Register d) { | |
759 if(VM_Version::v9_instructions_work()) { | |
760 mulx (s1, s2, d); | |
761 } else { | |
762 smul (s1, s2, d); | |
763 } | |
764 } | |
765 | |
766 void MacroAssembler::mult(Register s1, int simm13a, Register d) { | |
767 if(VM_Version::v9_instructions_work()) { | |
768 mulx (s1, simm13a, d); | |
769 } else { | |
770 smul (s1, simm13a, d); | |
771 } | |
772 } | |
773 | |
774 | |
775 #ifdef ASSERT | |
776 void MacroAssembler::read_ccr_v8_assert(Register ccr_save) { | |
777 const Register s1 = G3_scratch; | |
778 const Register s2 = G4_scratch; | |
779 Label get_psr_test; | |
780 // Get the condition codes the V8 way. | |
781 read_ccr_trap(s1); | |
782 mov(ccr_save, s2); | |
783 // This is a test of V8 which has icc but not xcc | |
784 // so mask off the xcc bits | |
785 and3(s2, 0xf, s2); | |
786 // Compare condition codes from the V8 and V9 ways. | |
787 subcc(s2, s1, G0); | |
788 br(Assembler::notEqual, true, Assembler::pt, get_psr_test); | |
789 delayed()->breakpoint_trap(); | |
790 bind(get_psr_test); | |
791 } | |
792 | |
793 void MacroAssembler::write_ccr_v8_assert(Register ccr_save) { | |
794 const Register s1 = G3_scratch; | |
795 const Register s2 = G4_scratch; | |
796 Label set_psr_test; | |
797 // Write out the saved condition codes the V8 way | |
798 write_ccr_trap(ccr_save, s1, s2); | |
799 // Read back the condition codes using the V9 instruction | |
800 rdccr(s1); | |
801 mov(ccr_save, s2); | |
802 // This is a test of V8 which has icc but not xcc | |
803 // so mask off the xcc bits | |
804 and3(s2, 0xf, s2); | |
805 and3(s1, 0xf, s1); | |
806 // Compare the V8 way with the V9 way. | |
807 subcc(s2, s1, G0); | |
808 br(Assembler::notEqual, true, Assembler::pt, set_psr_test); | |
809 delayed()->breakpoint_trap(); | |
810 bind(set_psr_test); | |
811 } | |
812 #else | |
813 #define read_ccr_v8_assert(x) | |
814 #define write_ccr_v8_assert(x) | |
815 #endif // ASSERT | |
816 | |
817 void MacroAssembler::read_ccr(Register ccr_save) { | |
818 if (VM_Version::v9_instructions_work()) { | |
819 rdccr(ccr_save); | |
820 // Test code sequence used on V8. Do not move above rdccr. | |
821 read_ccr_v8_assert(ccr_save); | |
822 } else { | |
823 read_ccr_trap(ccr_save); | |
824 } | |
825 } | |
826 | |
827 void MacroAssembler::write_ccr(Register ccr_save) { | |
828 if (VM_Version::v9_instructions_work()) { | |
829 // Test code sequence used on V8. Do not move below wrccr. | |
830 write_ccr_v8_assert(ccr_save); | |
831 wrccr(ccr_save); | |
832 } else { | |
833 const Register temp_reg1 = G3_scratch; | |
834 const Register temp_reg2 = G4_scratch; | |
835 write_ccr_trap(ccr_save, temp_reg1, temp_reg2); | |
836 } | |
837 } | |
838 | |
839 | |
840 // Calls to C land | |
841 | |
842 #ifdef ASSERT | |
843 // a hook for debugging | |
844 static Thread* reinitialize_thread() { | |
845 return ThreadLocalStorage::thread(); | |
846 } | |
847 #else | |
848 #define reinitialize_thread ThreadLocalStorage::thread | |
849 #endif | |
850 | |
851 #ifdef ASSERT | |
852 address last_get_thread = NULL; | |
853 #endif | |
854 | |
855 // call this when G2_thread is not known to be valid | |
856 void MacroAssembler::get_thread() { | |
857 save_frame(0); // to avoid clobbering O0 | |
858 mov(G1, L0); // avoid clobbering G1 | |
859 mov(G5_method, L1); // avoid clobbering G5 | |
860 mov(G3, L2); // avoid clobbering G3 also | |
861 mov(G4, L5); // avoid clobbering G4 | |
862 #ifdef ASSERT | |
727 | 863 AddressLiteral last_get_thread_addrlit(&last_get_thread); |
864 set(last_get_thread_addrlit, L3); | |
0 | 865 inc(L4, get_pc(L4) + 2 * BytesPerInstWord); // skip getpc() code + inc + st_ptr to point L4 at call |
727 | 866 st_ptr(L4, L3, 0); |
0 | 867 #endif |
868 call(CAST_FROM_FN_PTR(address, reinitialize_thread), relocInfo::runtime_call_type); | |
869 delayed()->nop(); | |
870 mov(L0, G1); | |
871 mov(L1, G5_method); | |
872 mov(L2, G3); | |
873 mov(L5, G4); | |
874 restore(O0, 0, G2_thread); | |
875 } | |
876 | |
877 static Thread* verify_thread_subroutine(Thread* gthread_value) { | |
878 Thread* correct_value = ThreadLocalStorage::thread(); | |
879 guarantee(gthread_value == correct_value, "G2_thread value must be the thread"); | |
880 return correct_value; | |
881 } | |
882 | |
883 void MacroAssembler::verify_thread() { | |
884 if (VerifyThread) { | |
885 // NOTE: this chops off the heads of the 64-bit O registers. | |
886 #ifdef CC_INTERP | |
887 save_frame(0); | |
888 #else | |
889 // make sure G2_thread contains the right value | |
890 save_frame_and_mov(0, Lmethod, Lmethod); // to avoid clobbering O0 (and propagate Lmethod for -Xprof) | |
891 mov(G1, L1); // avoid clobbering G1 | |
892 // G2 saved below | |
893 mov(G3, L3); // avoid clobbering G3 | |
894 mov(G4, L4); // avoid clobbering G4 | |
895 mov(G5_method, L5); // avoid clobbering G5_method | |
896 #endif /* CC_INTERP */ | |
897 #if defined(COMPILER2) && !defined(_LP64) | |
898 // Save & restore possible 64-bit Long arguments in G-regs | |
899 srlx(G1,32,L0); | |
900 srlx(G4,32,L6); | |
901 #endif | |
902 call(CAST_FROM_FN_PTR(address,verify_thread_subroutine), relocInfo::runtime_call_type); | |
903 delayed()->mov(G2_thread, O0); | |
904 | |
905 mov(L1, G1); // Restore G1 | |
906 // G2 restored below | |
907 mov(L3, G3); // restore G3 | |
908 mov(L4, G4); // restore G4 | |
909 mov(L5, G5_method); // restore G5_method | |
910 #if defined(COMPILER2) && !defined(_LP64) | |
911 // Save & restore possible 64-bit Long arguments in G-regs | |
912 sllx(L0,32,G2); // Move old high G1 bits high in G2 | |
2002 | 913 srl(G1, 0,G1); // Clear current high G1 bits |
0 | 914 or3 (G1,G2,G1); // Recover 64-bit G1 |
915 sllx(L6,32,G2); // Move old high G4 bits high in G2 | |
2002 | 916 srl(G4, 0,G4); // Clear current high G4 bits |
0 | 917 or3 (G4,G2,G4); // Recover 64-bit G4 |
918 #endif | |
919 restore(O0, 0, G2_thread); | |
920 } | |
921 } | |
922 | |
923 | |
924 void MacroAssembler::save_thread(const Register thread_cache) { | |
925 verify_thread(); | |
926 if (thread_cache->is_valid()) { | |
927 assert(thread_cache->is_local() || thread_cache->is_in(), "bad volatile"); | |
928 mov(G2_thread, thread_cache); | |
929 } | |
930 if (VerifyThread) { | |
931 // smash G2_thread, as if the VM were about to anyway | |
932 set(0x67676767, G2_thread); | |
933 } | |
934 } | |
935 | |
936 | |
937 void MacroAssembler::restore_thread(const Register thread_cache) { | |
938 if (thread_cache->is_valid()) { | |
939 assert(thread_cache->is_local() || thread_cache->is_in(), "bad volatile"); | |
940 mov(thread_cache, G2_thread); | |
941 verify_thread(); | |
942 } else { | |
943 // do it the slow way | |
944 get_thread(); | |
945 } | |
946 } | |
947 | |
948 | |
949 // %%% maybe get rid of [re]set_last_Java_frame | |
950 void MacroAssembler::set_last_Java_frame(Register last_java_sp, Register last_Java_pc) { | |
951 assert_not_delayed(); | |
727 | 952 Address flags(G2_thread, JavaThread::frame_anchor_offset() + |
953 JavaFrameAnchor::flags_offset()); | |
954 Address pc_addr(G2_thread, JavaThread::last_Java_pc_offset()); | |
0 | 955 |
956 // Always set last_Java_pc and flags first because once last_Java_sp is visible | |
957 // has_last_Java_frame is true and users will look at the rest of the fields. | |
958 // (Note: flags should always be zero before we get here so doesn't need to be set.) | |
959 | |
960 #ifdef ASSERT | |
961 // Verify that flags was zeroed on return to Java | |
962 Label PcOk; | |
963 save_frame(0); // to avoid clobbering O0 | |
964 ld_ptr(pc_addr, L0); | |
965 tst(L0); | |
966 #ifdef _LP64 | |
967 brx(Assembler::zero, false, Assembler::pt, PcOk); | |
968 #else | |
969 br(Assembler::zero, false, Assembler::pt, PcOk); | |
970 #endif // _LP64 | |
971 delayed() -> nop(); | |
972 stop("last_Java_pc not zeroed before leaving Java"); | |
973 bind(PcOk); | |
974 | |
975 // Verify that flags was zeroed on return to Java | |
976 Label FlagsOk; | |
977 ld(flags, L0); | |
978 tst(L0); | |
979 br(Assembler::zero, false, Assembler::pt, FlagsOk); | |
980 delayed() -> restore(); | |
981 stop("flags not zeroed before leaving Java"); | |
982 bind(FlagsOk); | |
983 #endif /* ASSERT */ | |
984 // | |
985 // When returning from calling out from Java mode the frame anchor's last_Java_pc | |
986 // will always be set to NULL. It is set here so that if we are doing a call to | |
987 // native (not VM) that we capture the known pc and don't have to rely on the | |
988 // native call having a standard frame linkage where we can find the pc. | |
989 | |
990 if (last_Java_pc->is_valid()) { | |
991 st_ptr(last_Java_pc, pc_addr); | |
992 } | |
993 | |
994 #ifdef _LP64 | |
995 #ifdef ASSERT | |
996 // Make sure that we have an odd stack | |
997 Label StackOk; | |
998 andcc(last_java_sp, 0x01, G0); | |
999 br(Assembler::notZero, false, Assembler::pt, StackOk); | |
1000 delayed() -> nop(); | |
1001 stop("Stack Not Biased in set_last_Java_frame"); | |
1002 bind(StackOk); | |
1003 #endif // ASSERT | |
1004 assert( last_java_sp != G4_scratch, "bad register usage in set_last_Java_frame"); | |
1005 add( last_java_sp, STACK_BIAS, G4_scratch ); | |
727 | 1006 st_ptr(G4_scratch, G2_thread, JavaThread::last_Java_sp_offset()); |
0 | 1007 #else |
727 | 1008 st_ptr(last_java_sp, G2_thread, JavaThread::last_Java_sp_offset()); |
0 | 1009 #endif // _LP64 |
1010 } | |
1011 | |
1012 void MacroAssembler::reset_last_Java_frame(void) { | |
1013 assert_not_delayed(); | |
1014 | |
727 | 1015 Address sp_addr(G2_thread, JavaThread::last_Java_sp_offset()); |
1016 Address pc_addr(G2_thread, JavaThread::frame_anchor_offset() + JavaFrameAnchor::last_Java_pc_offset()); | |
1017 Address flags (G2_thread, JavaThread::frame_anchor_offset() + JavaFrameAnchor::flags_offset()); | |
0 | 1018 |
1019 #ifdef ASSERT | |
1020 // check that it WAS previously set | |
1021 #ifdef CC_INTERP | |
1022 save_frame(0); | |
1023 #else | |
1024 save_frame_and_mov(0, Lmethod, Lmethod); // Propagate Lmethod to helper frame for -Xprof | |
1025 #endif /* CC_INTERP */ | |
1026 ld_ptr(sp_addr, L0); | |
1027 tst(L0); | |
1028 breakpoint_trap(Assembler::zero, Assembler::ptr_cc); | |
1029 restore(); | |
1030 #endif // ASSERT | |
1031 | |
1032 st_ptr(G0, sp_addr); | |
1033 // Always return last_Java_pc to zero | |
1034 st_ptr(G0, pc_addr); | |
1035 // Always null flags after return to Java | |
1036 st(G0, flags); | |
1037 } | |
1038 | |
1039 | |
1040 void MacroAssembler::call_VM_base( | |
1041 Register oop_result, | |
1042 Register thread_cache, | |
1043 Register last_java_sp, | |
1044 address entry_point, | |
1045 int number_of_arguments, | |
1046 bool check_exceptions) | |
1047 { | |
1048 assert_not_delayed(); | |
1049 | |
1050 // determine last_java_sp register | |
1051 if (!last_java_sp->is_valid()) { | |
1052 last_java_sp = SP; | |
1053 } | |
1054 // debugging support | |
1055 assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); | |
1056 | |
1057 // 64-bit last_java_sp is biased! | |
1058 set_last_Java_frame(last_java_sp, noreg); | |
1059 if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early | |
1060 save_thread(thread_cache); | |
1061 // do the call | |
1062 call(entry_point, relocInfo::runtime_call_type); | |
1063 if (!VerifyThread) | |
1064 delayed()->mov(G2_thread, O0); // pass thread as first argument | |
1065 else | |
1066 delayed()->nop(); // (thread already passed) | |
1067 restore_thread(thread_cache); | |
1068 reset_last_Java_frame(); | |
1069 | |
1070 // check for pending exceptions. use Gtemp as scratch register. | |
1071 if (check_exceptions) { | |
1072 check_and_forward_exception(Gtemp); | |
1073 } | |
1074 | |
1075 // get oop result if there is one and reset the value in the thread | |
1076 if (oop_result->is_valid()) { | |
1077 get_vm_result(oop_result); | |
1078 } | |
1079 } | |
1080 | |
1081 void MacroAssembler::check_and_forward_exception(Register scratch_reg) | |
1082 { | |
1083 Label L; | |
1084 | |
1085 check_and_handle_popframe(scratch_reg); | |
1086 check_and_handle_earlyret(scratch_reg); | |
1087 | |
727 | 1088 Address exception_addr(G2_thread, Thread::pending_exception_offset()); |
0 | 1089 ld_ptr(exception_addr, scratch_reg); |
1090 br_null(scratch_reg,false,pt,L); | |
1091 delayed()->nop(); | |
1092 // we use O7 linkage so that forward_exception_entry has the issuing PC | |
1093 call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); | |
1094 delayed()->nop(); | |
1095 bind(L); | |
1096 } | |
1097 | |
1098 | |
1099 void MacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
1100 } | |
1101 | |
1102 | |
1103 void MacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
1104 } | |
1105 | |
1106 | |
1107 void MacroAssembler::call_VM(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions) { | |
1108 call_VM_base(oop_result, noreg, noreg, entry_point, number_of_arguments, check_exceptions); | |
1109 } | |
1110 | |
1111 | |
1112 void MacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
1113 // O0 is reserved for the thread | |
1114 mov(arg_1, O1); | |
1115 call_VM(oop_result, entry_point, 1, check_exceptions); | |
1116 } | |
1117 | |
1118 | |
1119 void MacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
1120 // O0 is reserved for the thread | |
1121 mov(arg_1, O1); | |
1122 mov(arg_2, O2); assert(arg_2 != O1, "smashed argument"); | |
1123 call_VM(oop_result, entry_point, 2, check_exceptions); | |
1124 } | |
1125 | |
1126 | |
1127 void MacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
1128 // O0 is reserved for the thread | |
1129 mov(arg_1, O1); | |
1130 mov(arg_2, O2); assert(arg_2 != O1, "smashed argument"); | |
1131 mov(arg_3, O3); assert(arg_3 != O1 && arg_3 != O2, "smashed argument"); | |
1132 call_VM(oop_result, entry_point, 3, check_exceptions); | |
1133 } | |
1134 | |
1135 | |
1136 | |
1137 // Note: The following call_VM overloadings are useful when a "save" | |
1138 // has already been performed by a stub, and the last Java frame is | |
1139 // the previous one. In that case, last_java_sp must be passed as FP | |
1140 // instead of SP. | |
1141 | |
1142 | |
1143 void MacroAssembler::call_VM(Register oop_result, Register last_java_sp, address entry_point, int number_of_arguments, bool check_exceptions) { | |
1144 call_VM_base(oop_result, noreg, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
1145 } | |
1146 | |
1147 | |
1148 void MacroAssembler::call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions) { | |
1149 // O0 is reserved for the thread | |
1150 mov(arg_1, O1); | |
1151 call_VM(oop_result, last_java_sp, entry_point, 1, check_exceptions); | |
1152 } | |
1153 | |
1154 | |
1155 void MacroAssembler::call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
1156 // O0 is reserved for the thread | |
1157 mov(arg_1, O1); | |
1158 mov(arg_2, O2); assert(arg_2 != O1, "smashed argument"); | |
1159 call_VM(oop_result, last_java_sp, entry_point, 2, check_exceptions); | |
1160 } | |
1161 | |
1162 | |
1163 void MacroAssembler::call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
1164 // O0 is reserved for the thread | |
1165 mov(arg_1, O1); | |
1166 mov(arg_2, O2); assert(arg_2 != O1, "smashed argument"); | |
1167 mov(arg_3, O3); assert(arg_3 != O1 && arg_3 != O2, "smashed argument"); | |
1168 call_VM(oop_result, last_java_sp, entry_point, 3, check_exceptions); | |
1169 } | |
1170 | |
1171 | |
1172 | |
1173 void MacroAssembler::call_VM_leaf_base(Register thread_cache, address entry_point, int number_of_arguments) { | |
1174 assert_not_delayed(); | |
1175 save_thread(thread_cache); | |
1176 // do the call | |
1177 call(entry_point, relocInfo::runtime_call_type); | |
1178 delayed()->nop(); | |
1179 restore_thread(thread_cache); | |
1180 } | |
1181 | |
1182 | |
1183 void MacroAssembler::call_VM_leaf(Register thread_cache, address entry_point, int number_of_arguments) { | |
1184 call_VM_leaf_base(thread_cache, entry_point, number_of_arguments); | |
1185 } | |
1186 | |
1187 | |
1188 void MacroAssembler::call_VM_leaf(Register thread_cache, address entry_point, Register arg_1) { | |
1189 mov(arg_1, O0); | |
1190 call_VM_leaf(thread_cache, entry_point, 1); | |
1191 } | |
1192 | |
1193 | |
1194 void MacroAssembler::call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2) { | |
1195 mov(arg_1, O0); | |
1196 mov(arg_2, O1); assert(arg_2 != O0, "smashed argument"); | |
1197 call_VM_leaf(thread_cache, entry_point, 2); | |
1198 } | |
1199 | |
1200 | |
1201 void MacroAssembler::call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
1202 mov(arg_1, O0); | |
1203 mov(arg_2, O1); assert(arg_2 != O0, "smashed argument"); | |
1204 mov(arg_3, O2); assert(arg_3 != O0 && arg_3 != O1, "smashed argument"); | |
1205 call_VM_leaf(thread_cache, entry_point, 3); | |
1206 } | |
1207 | |
1208 | |
1209 void MacroAssembler::get_vm_result(Register oop_result) { | |
1210 verify_thread(); | |
727 | 1211 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
0 | 1212 ld_ptr( vm_result_addr, oop_result); |
1213 st_ptr(G0, vm_result_addr); | |
1214 verify_oop(oop_result); | |
1215 } | |
1216 | |
1217 | |
1218 void MacroAssembler::get_vm_result_2(Register oop_result) { | |
1219 verify_thread(); | |
727 | 1220 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); |
0 | 1221 ld_ptr(vm_result_addr_2, oop_result); |
1222 st_ptr(G0, vm_result_addr_2); | |
1223 verify_oop(oop_result); | |
1224 } | |
1225 | |
1226 | |
1227 // We require that C code which does not return a value in vm_result will | |
1228 // leave it undisturbed. | |
1229 void MacroAssembler::set_vm_result(Register oop_result) { | |
1230 verify_thread(); | |
727 | 1231 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); |
0 | 1232 verify_oop(oop_result); |
1233 | |
1234 # ifdef ASSERT | |
1235 // Check that we are not overwriting any other oop. | |
1236 #ifdef CC_INTERP | |
1237 save_frame(0); | |
1238 #else | |
1239 save_frame_and_mov(0, Lmethod, Lmethod); // Propagate Lmethod for -Xprof | |
1240 #endif /* CC_INTERP */ | |
1241 ld_ptr(vm_result_addr, L0); | |
1242 tst(L0); | |
1243 restore(); | |
1244 breakpoint_trap(notZero, Assembler::ptr_cc); | |
1245 // } | |
1246 # endif | |
1247 | |
1248 st_ptr(oop_result, vm_result_addr); | |
1249 } | |
1250 | |
1251 | |
342
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1252 void MacroAssembler::card_table_write(jbyte* byte_map_base, |
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1253 Register tmp, Register obj) { |
0 | 1254 #ifdef _LP64 |
1255 srlx(obj, CardTableModRefBS::card_shift, obj); | |
1256 #else | |
1257 srl(obj, CardTableModRefBS::card_shift, obj); | |
1258 #endif | |
727 | 1259 assert(tmp != obj, "need separate temp reg"); |
1260 set((address) byte_map_base, tmp); | |
1261 stb(G0, tmp, obj); | |
0 | 1262 } |
1263 | |
727 | 1264 |
1265 void MacroAssembler::internal_sethi(const AddressLiteral& addrlit, Register d, bool ForceRelocatable) { | |
0 | 1266 address save_pc; |
1267 int shiftcnt; | |
1268 #ifdef _LP64 | |
1269 # ifdef CHECK_DELAY | |
727 | 1270 assert_not_delayed((char*) "cannot put two instructions in delay slot"); |
0 | 1271 # endif |
1272 v9_dep(); | |
1273 save_pc = pc(); | |
727 | 1274 |
1275 int msb32 = (int) (addrlit.value() >> 32); | |
1276 int lsb32 = (int) (addrlit.value()); | |
1277 | |
1278 if (msb32 == 0 && lsb32 >= 0) { | |
1279 Assembler::sethi(lsb32, d, addrlit.rspec()); | |
0 | 1280 } |
727 | 1281 else if (msb32 == -1) { |
1282 Assembler::sethi(~lsb32, d, addrlit.rspec()); | |
1283 xor3(d, ~low10(~0), d); | |
0 | 1284 } |
1285 else { | |
727 | 1286 Assembler::sethi(msb32, d, addrlit.rspec()); // msb 22-bits |
1287 if (msb32 & 0x3ff) // Any bits? | |
1288 or3(d, msb32 & 0x3ff, d); // msb 32-bits are now in lsb 32 | |
1289 if (lsb32 & 0xFFFFFC00) { // done? | |
1290 if ((lsb32 >> 20) & 0xfff) { // Any bits set? | |
1291 sllx(d, 12, d); // Make room for next 12 bits | |
1292 or3(d, (lsb32 >> 20) & 0xfff, d); // Or in next 12 | |
1293 shiftcnt = 0; // We already shifted | |
0 | 1294 } |
1295 else | |
1296 shiftcnt = 12; | |
727 | 1297 if ((lsb32 >> 10) & 0x3ff) { |
1298 sllx(d, shiftcnt + 10, d); // Make room for last 10 bits | |
1299 or3(d, (lsb32 >> 10) & 0x3ff, d); // Or in next 10 | |
0 | 1300 shiftcnt = 0; |
1301 } | |
1302 else | |
1303 shiftcnt = 10; | |
727 | 1304 sllx(d, shiftcnt + 10, d); // Shift leaving disp field 0'd |
0 | 1305 } |
1306 else | |
727 | 1307 sllx(d, 32, d); |
0 | 1308 } |
727 | 1309 // Pad out the instruction sequence so it can be patched later. |
1310 if (ForceRelocatable || (addrlit.rtype() != relocInfo::none && | |
1311 addrlit.rtype() != relocInfo::runtime_call_type)) { | |
1312 while (pc() < (save_pc + (7 * BytesPerInstWord))) | |
0 | 1313 nop(); |
1314 } | |
1315 #else | |
727 | 1316 Assembler::sethi(addrlit.value(), d, addrlit.rspec()); |
0 | 1317 #endif |
727 | 1318 } |
1319 | |
1320 | |
1321 void MacroAssembler::sethi(const AddressLiteral& addrlit, Register d) { | |
1322 internal_sethi(addrlit, d, false); | |
0 | 1323 } |
1324 | |
727 | 1325 |
1326 void MacroAssembler::patchable_sethi(const AddressLiteral& addrlit, Register d) { | |
1327 internal_sethi(addrlit, d, true); | |
1328 } | |
1329 | |
1330 | |
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1331 int MacroAssembler::insts_for_sethi(address a, bool worst_case) { |
0 | 1332 #ifdef _LP64 |
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1333 if (worst_case) return 7; |
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1334 intptr_t iaddr = (intptr_t) a; |
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1335 int msb32 = (int) (iaddr >> 32); |
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1336 int lsb32 = (int) (iaddr); |
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1337 int count; |
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1338 if (msb32 == 0 && lsb32 >= 0) |
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1339 count = 1; |
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1340 else if (msb32 == -1) |
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1341 count = 2; |
0 | 1342 else { |
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1343 count = 2; |
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1344 if (msb32 & 0x3ff) |
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1345 count++; |
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1346 if (lsb32 & 0xFFFFFC00 ) { |
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1347 if ((lsb32 >> 20) & 0xfff) count += 2; |
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1348 if ((lsb32 >> 10) & 0x3ff) count += 2; |
0 | 1349 } |
1350 } | |
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1351 return count; |
0 | 1352 #else |
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1353 return 1; |
0 | 1354 #endif |
1355 } | |
1356 | |
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1357 int MacroAssembler::worst_case_insts_for_set() { |
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1358 return insts_for_sethi(NULL, true) + 1; |
0 | 1359 } |
1360 | |
727 | 1361 |
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1362 // Keep in sync with MacroAssembler::insts_for_internal_set |
727 | 1363 void MacroAssembler::internal_set(const AddressLiteral& addrlit, Register d, bool ForceRelocatable) { |
1364 intptr_t value = addrlit.value(); | |
1365 | |
1366 if (!ForceRelocatable && addrlit.rspec().type() == relocInfo::none) { | |
0 | 1367 // can optimize |
727 | 1368 if (-4096 <= value && value <= 4095) { |
0 | 1369 or3(G0, value, d); // setsw (this leaves upper 32 bits sign-extended) |
1370 return; | |
1371 } | |
1372 if (inv_hi22(hi22(value)) == value) { | |
727 | 1373 sethi(addrlit, d); |
0 | 1374 return; |
1375 } | |
1376 } | |
727 | 1377 assert_not_delayed((char*) "cannot put two instructions in delay slot"); |
1378 internal_sethi(addrlit, d, ForceRelocatable); | |
1379 if (ForceRelocatable || addrlit.rspec().type() != relocInfo::none || addrlit.low10() != 0) { | |
1380 add(d, addrlit.low10(), d, addrlit.rspec()); | |
0 | 1381 } |
1382 } | |
1383 | |
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1384 // Keep in sync with MacroAssembler::internal_set |
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1385 int MacroAssembler::insts_for_internal_set(intptr_t value) { |
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1386 // can optimize |
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1387 if (-4096 <= value && value <= 4095) { |
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1388 return 1; |
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1389 } |
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1390 if (inv_hi22(hi22(value)) == value) { |
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1391 return insts_for_sethi((address) value); |
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1392 } |
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1393 int count = insts_for_sethi((address) value); |
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1394 AddressLiteral al(value); |
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1395 if (al.low10() != 0) { |
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1396 count++; |
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1397 } |
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1398 return count; |
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1399 } |
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1400 |
727 | 1401 void MacroAssembler::set(const AddressLiteral& al, Register d) { |
1402 internal_set(al, d, false); | |
1403 } | |
1404 | |
1405 void MacroAssembler::set(intptr_t value, Register d) { | |
1406 AddressLiteral al(value); | |
1407 internal_set(al, d, false); | |
0 | 1408 } |
1409 | |
727 | 1410 void MacroAssembler::set(address addr, Register d, RelocationHolder const& rspec) { |
1411 AddressLiteral al(addr, rspec); | |
1412 internal_set(al, d, false); | |
1413 } | |
1414 | |
1415 void MacroAssembler::patchable_set(const AddressLiteral& al, Register d) { | |
1416 internal_set(al, d, true); | |
1417 } | |
1418 | |
1419 void MacroAssembler::patchable_set(intptr_t value, Register d) { | |
1420 AddressLiteral al(value); | |
1421 internal_set(al, d, true); | |
1422 } | |
0 | 1423 |
1424 | |
1425 void MacroAssembler::set64(jlong value, Register d, Register tmp) { | |
1426 assert_not_delayed(); | |
1427 v9_dep(); | |
1428 | |
1429 int hi = (int)(value >> 32); | |
1430 int lo = (int)(value & ~0); | |
1431 // (Matcher::isSimpleConstant64 knows about the following optimizations.) | |
1432 if (Assembler::is_simm13(lo) && value == lo) { | |
1433 or3(G0, lo, d); | |
1434 } else if (hi == 0) { | |
1435 Assembler::sethi(lo, d); // hardware version zero-extends to upper 32 | |
1436 if (low10(lo) != 0) | |
1437 or3(d, low10(lo), d); | |
1438 } | |
1439 else if (hi == -1) { | |
1440 Assembler::sethi(~lo, d); // hardware version zero-extends to upper 32 | |
1441 xor3(d, low10(lo) ^ ~low10(~0), d); | |
1442 } | |
1443 else if (lo == 0) { | |
1444 if (Assembler::is_simm13(hi)) { | |
1445 or3(G0, hi, d); | |
1446 } else { | |
1447 Assembler::sethi(hi, d); // hardware version zero-extends to upper 32 | |
1448 if (low10(hi) != 0) | |
1449 or3(d, low10(hi), d); | |
1450 } | |
1451 sllx(d, 32, d); | |
1452 } | |
1453 else { | |
1454 Assembler::sethi(hi, tmp); | |
1455 Assembler::sethi(lo, d); // macro assembler version sign-extends | |
1456 if (low10(hi) != 0) | |
1457 or3 (tmp, low10(hi), tmp); | |
1458 if (low10(lo) != 0) | |
1459 or3 ( d, low10(lo), d); | |
1460 sllx(tmp, 32, tmp); | |
1461 or3 (d, tmp, d); | |
1462 } | |
1463 } | |
1464 | |
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1465 int MacroAssembler::insts_for_set64(jlong value) { |
2008 | 1466 v9_dep(); |
1467 | |
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1468 int hi = (int) (value >> 32); |
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1469 int lo = (int) (value & ~0); |
2008 | 1470 int count = 0; |
1471 | |
1472 // (Matcher::isSimpleConstant64 knows about the following optimizations.) | |
1473 if (Assembler::is_simm13(lo) && value == lo) { | |
1474 count++; | |
1475 } else if (hi == 0) { | |
1476 count++; | |
1477 if (low10(lo) != 0) | |
1478 count++; | |
1479 } | |
1480 else if (hi == -1) { | |
1481 count += 2; | |
1482 } | |
1483 else if (lo == 0) { | |
1484 if (Assembler::is_simm13(hi)) { | |
1485 count++; | |
1486 } else { | |
1487 count++; | |
1488 if (low10(hi) != 0) | |
1489 count++; | |
1490 } | |
1491 count++; | |
1492 } | |
1493 else { | |
1494 count += 2; | |
1495 if (low10(hi) != 0) | |
1496 count++; | |
1497 if (low10(lo) != 0) | |
1498 count++; | |
1499 count += 2; | |
1500 } | |
1501 return count; | |
1502 } | |
1503 | |
0 | 1504 // compute size in bytes of sparc frame, given |
1505 // number of extraWords | |
1506 int MacroAssembler::total_frame_size_in_bytes(int extraWords) { | |
1507 | |
1508 int nWords = frame::memory_parameter_word_sp_offset; | |
1509 | |
1510 nWords += extraWords; | |
1511 | |
1512 if (nWords & 1) ++nWords; // round up to double-word | |
1513 | |
1514 return nWords * BytesPerWord; | |
1515 } | |
1516 | |
1517 | |
1518 // save_frame: given number of "extra" words in frame, | |
1519 // issue approp. save instruction (p 200, v8 manual) | |
1520 | |
1521 void MacroAssembler::save_frame(int extraWords = 0) { | |
1522 int delta = -total_frame_size_in_bytes(extraWords); | |
1523 if (is_simm13(delta)) { | |
1524 save(SP, delta, SP); | |
1525 } else { | |
1526 set(delta, G3_scratch); | |
1527 save(SP, G3_scratch, SP); | |
1528 } | |
1529 } | |
1530 | |
1531 | |
1532 void MacroAssembler::save_frame_c1(int size_in_bytes) { | |
1533 if (is_simm13(-size_in_bytes)) { | |
1534 save(SP, -size_in_bytes, SP); | |
1535 } else { | |
1536 set(-size_in_bytes, G3_scratch); | |
1537 save(SP, G3_scratch, SP); | |
1538 } | |
1539 } | |
1540 | |
1541 | |
1542 void MacroAssembler::save_frame_and_mov(int extraWords, | |
1543 Register s1, Register d1, | |
1544 Register s2, Register d2) { | |
1545 assert_not_delayed(); | |
1546 | |
1547 // The trick here is to use precisely the same memory word | |
1548 // that trap handlers also use to save the register. | |
1549 // This word cannot be used for any other purpose, but | |
1550 // it works fine to save the register's value, whether or not | |
1551 // an interrupt flushes register windows at any given moment! | |
1552 Address s1_addr; | |
1553 if (s1->is_valid() && (s1->is_in() || s1->is_local())) { | |
1554 s1_addr = s1->address_in_saved_window(); | |
1555 st_ptr(s1, s1_addr); | |
1556 } | |
1557 | |
1558 Address s2_addr; | |
1559 if (s2->is_valid() && (s2->is_in() || s2->is_local())) { | |
1560 s2_addr = s2->address_in_saved_window(); | |
1561 st_ptr(s2, s2_addr); | |
1562 } | |
1563 | |
1564 save_frame(extraWords); | |
1565 | |
1566 if (s1_addr.base() == SP) { | |
1567 ld_ptr(s1_addr.after_save(), d1); | |
1568 } else if (s1->is_valid()) { | |
1569 mov(s1->after_save(), d1); | |
1570 } | |
1571 | |
1572 if (s2_addr.base() == SP) { | |
1573 ld_ptr(s2_addr.after_save(), d2); | |
1574 } else if (s2->is_valid()) { | |
1575 mov(s2->after_save(), d2); | |
1576 } | |
1577 } | |
1578 | |
1579 | |
727 | 1580 AddressLiteral MacroAssembler::allocate_oop_address(jobject obj) { |
0 | 1581 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
1582 int oop_index = oop_recorder()->allocate_index(obj); | |
727 | 1583 return AddressLiteral(obj, oop_Relocation::spec(oop_index)); |
0 | 1584 } |
1585 | |
1586 | |
727 | 1587 AddressLiteral MacroAssembler::constant_oop_address(jobject obj) { |
0 | 1588 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
1589 int oop_index = oop_recorder()->find_index(obj); | |
727 | 1590 return AddressLiteral(obj, oop_Relocation::spec(oop_index)); |
0 | 1591 } |
1592 | |
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1593 void MacroAssembler::set_narrow_oop(jobject obj, Register d) { |
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1594 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
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1595 int oop_index = oop_recorder()->find_index(obj); |
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1596 RelocationHolder rspec = oop_Relocation::spec(oop_index); |
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1597 |
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1598 assert_not_delayed(); |
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1599 // Relocation with special format (see relocInfo_sparc.hpp). |
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1600 relocate(rspec, 1); |
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1601 // Assembler::sethi(0x3fffff, d); |
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1602 emit_long( op(branch_op) | rd(d) | op2(sethi_op2) | hi22(0x3fffff) ); |
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1603 // Don't add relocation for 'add'. Do patching during 'sethi' processing. |
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1604 add(d, 0x3ff, d); |
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1605 |
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1606 } |
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1607 |
0 | 1608 |
1609 void MacroAssembler::align(int modulus) { | |
1610 while (offset() % modulus != 0) nop(); | |
1611 } | |
1612 | |
1613 | |
1614 void MacroAssembler::safepoint() { | |
1615 relocate(breakpoint_Relocation::spec(breakpoint_Relocation::safepoint)); | |
1616 } | |
1617 | |
1618 | |
1619 void RegistersForDebugging::print(outputStream* s) { | |
1620 int j; | |
1621 for ( j = 0; j < 8; ++j ) | |
1622 if ( j != 6 ) s->print_cr("i%d = 0x%.16lx", j, i[j]); | |
1623 else s->print_cr( "fp = 0x%.16lx", i[j]); | |
1624 s->cr(); | |
1625 | |
1626 for ( j = 0; j < 8; ++j ) | |
1627 s->print_cr("l%d = 0x%.16lx", j, l[j]); | |
1628 s->cr(); | |
1629 | |
1630 for ( j = 0; j < 8; ++j ) | |
1631 if ( j != 6 ) s->print_cr("o%d = 0x%.16lx", j, o[j]); | |
1632 else s->print_cr( "sp = 0x%.16lx", o[j]); | |
1633 s->cr(); | |
1634 | |
1635 for ( j = 0; j < 8; ++j ) | |
1636 s->print_cr("g%d = 0x%.16lx", j, g[j]); | |
1637 s->cr(); | |
1638 | |
1639 // print out floats with compression | |
1640 for (j = 0; j < 32; ) { | |
1641 jfloat val = f[j]; | |
1642 int last = j; | |
1643 for ( ; last+1 < 32; ++last ) { | |
1644 char b1[1024], b2[1024]; | |
1645 sprintf(b1, "%f", val); | |
1646 sprintf(b2, "%f", f[last+1]); | |
1647 if (strcmp(b1, b2)) | |
1648 break; | |
1649 } | |
1650 s->print("f%d", j); | |
1651 if ( j != last ) s->print(" - f%d", last); | |
1652 s->print(" = %f", val); | |
1653 s->fill_to(25); | |
1654 s->print_cr(" (0x%x)", val); | |
1655 j = last + 1; | |
1656 } | |
1657 s->cr(); | |
1658 | |
1659 // and doubles (evens only) | |
1660 for (j = 0; j < 32; ) { | |
1661 jdouble val = d[j]; | |
1662 int last = j; | |
1663 for ( ; last+1 < 32; ++last ) { | |
1664 char b1[1024], b2[1024]; | |
1665 sprintf(b1, "%f", val); | |
1666 sprintf(b2, "%f", d[last+1]); | |
1667 if (strcmp(b1, b2)) | |
1668 break; | |
1669 } | |
1670 s->print("d%d", 2 * j); | |
1671 if ( j != last ) s->print(" - d%d", last); | |
1672 s->print(" = %f", val); | |
1673 s->fill_to(30); | |
1674 s->print("(0x%x)", *(int*)&val); | |
1675 s->fill_to(42); | |
1676 s->print_cr("(0x%x)", *(1 + (int*)&val)); | |
1677 j = last + 1; | |
1678 } | |
1679 s->cr(); | |
1680 } | |
1681 | |
1682 void RegistersForDebugging::save_registers(MacroAssembler* a) { | |
1683 a->sub(FP, round_to(sizeof(RegistersForDebugging), sizeof(jdouble)) - STACK_BIAS, O0); | |
1684 a->flush_windows(); | |
1685 int i; | |
1686 for (i = 0; i < 8; ++i) { | |
1687 a->ld_ptr(as_iRegister(i)->address_in_saved_window().after_save(), L1); a->st_ptr( L1, O0, i_offset(i)); | |
1688 a->ld_ptr(as_lRegister(i)->address_in_saved_window().after_save(), L1); a->st_ptr( L1, O0, l_offset(i)); | |
1689 a->st_ptr(as_oRegister(i)->after_save(), O0, o_offset(i)); | |
1690 a->st_ptr(as_gRegister(i)->after_save(), O0, g_offset(i)); | |
1691 } | |
1692 for (i = 0; i < 32; ++i) { | |
1693 a->stf(FloatRegisterImpl::S, as_FloatRegister(i), O0, f_offset(i)); | |
1694 } | |
1695 for (i = 0; i < (VM_Version::v9_instructions_work() ? 64 : 32); i += 2) { | |
1696 a->stf(FloatRegisterImpl::D, as_FloatRegister(i), O0, d_offset(i)); | |
1697 } | |
1698 } | |
1699 | |
1700 void RegistersForDebugging::restore_registers(MacroAssembler* a, Register r) { | |
1701 for (int i = 1; i < 8; ++i) { | |
1702 a->ld_ptr(r, g_offset(i), as_gRegister(i)); | |
1703 } | |
1704 for (int j = 0; j < 32; ++j) { | |
1705 a->ldf(FloatRegisterImpl::S, O0, f_offset(j), as_FloatRegister(j)); | |
1706 } | |
1707 for (int k = 0; k < (VM_Version::v9_instructions_work() ? 64 : 32); k += 2) { | |
1708 a->ldf(FloatRegisterImpl::D, O0, d_offset(k), as_FloatRegister(k)); | |
1709 } | |
1710 } | |
1711 | |
1712 | |
1713 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack | |
1714 void MacroAssembler::push_fTOS() { | |
1715 // %%%%%% need to implement this | |
1716 } | |
1717 | |
1718 // pops double TOS element from CPU stack and pushes on FPU stack | |
1719 void MacroAssembler::pop_fTOS() { | |
1720 // %%%%%% need to implement this | |
1721 } | |
1722 | |
1723 void MacroAssembler::empty_FPU_stack() { | |
1724 // %%%%%% need to implement this | |
1725 } | |
1726 | |
1727 void MacroAssembler::_verify_oop(Register reg, const char* msg, const char * file, int line) { | |
1728 // plausibility check for oops | |
1729 if (!VerifyOops) return; | |
1730 | |
1731 if (reg == G0) return; // always NULL, which is always an oop | |
1732 | |
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1733 char buffer[64]; |
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1734 #ifdef COMPILER1 |
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1735 if (CommentedAssembly) { |
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1736 snprintf(buffer, sizeof(buffer), "verify_oop at %d", offset()); |
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1737 block_comment(buffer); |
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1738 } |
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1739 #endif |
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1740 |
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1741 int len = strlen(file) + strlen(msg) + 1 + 4; |
0 | 1742 sprintf(buffer, "%d", line); |
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1743 len += strlen(buffer); |
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1744 sprintf(buffer, " at offset %d ", offset()); |
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1745 len += strlen(buffer); |
0 | 1746 char * real_msg = new char[len]; |
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1747 sprintf(real_msg, "%s%s(%s:%d)", msg, buffer, file, line); |
0 | 1748 |
1749 // Call indirectly to solve generation ordering problem | |
727 | 1750 AddressLiteral a(StubRoutines::verify_oop_subroutine_entry_address()); |
0 | 1751 |
1752 // Make some space on stack above the current register window. | |
1753 // Enough to hold 8 64-bit registers. | |
1754 add(SP,-8*8,SP); | |
1755 | |
1756 // Save some 64-bit registers; a normal 'save' chops the heads off | |
1757 // of 64-bit longs in the 32-bit build. | |
1758 stx(O0,SP,frame::register_save_words*wordSize+STACK_BIAS+0*8); | |
1759 stx(O1,SP,frame::register_save_words*wordSize+STACK_BIAS+1*8); | |
1760 mov(reg,O0); // Move arg into O0; arg might be in O7 which is about to be crushed | |
1761 stx(O7,SP,frame::register_save_words*wordSize+STACK_BIAS+7*8); | |
1762 | |
1763 set((intptr_t)real_msg, O1); | |
1764 // Load address to call to into O7 | |
1765 load_ptr_contents(a, O7); | |
1766 // Register call to verify_oop_subroutine | |
1767 callr(O7, G0); | |
1768 delayed()->nop(); | |
1769 // recover frame size | |
1770 add(SP, 8*8,SP); | |
1771 } | |
1772 | |
1773 void MacroAssembler::_verify_oop_addr(Address addr, const char* msg, const char * file, int line) { | |
1774 // plausibility check for oops | |
1775 if (!VerifyOops) return; | |
1776 | |
1777 char buffer[64]; | |
1778 sprintf(buffer, "%d", line); | |
1779 int len = strlen(file) + strlen(msg) + 1 + 4 + strlen(buffer); | |
1780 sprintf(buffer, " at SP+%d ", addr.disp()); | |
1781 len += strlen(buffer); | |
1782 char * real_msg = new char[len]; | |
1783 sprintf(real_msg, "%s at SP+%d (%s:%d)", msg, addr.disp(), file, line); | |
1784 | |
1785 // Call indirectly to solve generation ordering problem | |
727 | 1786 AddressLiteral a(StubRoutines::verify_oop_subroutine_entry_address()); |
0 | 1787 |
1788 // Make some space on stack above the current register window. | |
1789 // Enough to hold 8 64-bit registers. | |
1790 add(SP,-8*8,SP); | |
1791 | |
1792 // Save some 64-bit registers; a normal 'save' chops the heads off | |
1793 // of 64-bit longs in the 32-bit build. | |
1794 stx(O0,SP,frame::register_save_words*wordSize+STACK_BIAS+0*8); | |
1795 stx(O1,SP,frame::register_save_words*wordSize+STACK_BIAS+1*8); | |
1796 ld_ptr(addr.base(), addr.disp() + 8*8, O0); // Load arg into O0; arg might be in O7 which is about to be crushed | |
1797 stx(O7,SP,frame::register_save_words*wordSize+STACK_BIAS+7*8); | |
1798 | |
1799 set((intptr_t)real_msg, O1); | |
1800 // Load address to call to into O7 | |
1801 load_ptr_contents(a, O7); | |
1802 // Register call to verify_oop_subroutine | |
1803 callr(O7, G0); | |
1804 delayed()->nop(); | |
1805 // recover frame size | |
1806 add(SP, 8*8,SP); | |
1807 } | |
1808 | |
1809 // side-door communication with signalHandler in os_solaris.cpp | |
1810 address MacroAssembler::_verify_oop_implicit_branch[3] = { NULL }; | |
1811 | |
1812 // This macro is expanded just once; it creates shared code. Contract: | |
1813 // receives an oop in O0. Must restore O0 & O7 from TLS. Must not smash ANY | |
1814 // registers, including flags. May not use a register 'save', as this blows | |
1815 // the high bits of the O-regs if they contain Long values. Acts as a 'leaf' | |
1816 // call. | |
1817 void MacroAssembler::verify_oop_subroutine() { | |
1818 assert( VM_Version::v9_instructions_work(), "VerifyOops not supported for V8" ); | |
1819 | |
1820 // Leaf call; no frame. | |
1821 Label succeed, fail, null_or_fail; | |
1822 | |
1823 // O0 and O7 were saved already (O0 in O0's TLS home, O7 in O5's TLS home). | |
1824 // O0 is now the oop to be checked. O7 is the return address. | |
1825 Register O0_obj = O0; | |
1826 | |
1827 // Save some more registers for temps. | |
1828 stx(O2,SP,frame::register_save_words*wordSize+STACK_BIAS+2*8); | |
1829 stx(O3,SP,frame::register_save_words*wordSize+STACK_BIAS+3*8); | |
1830 stx(O4,SP,frame::register_save_words*wordSize+STACK_BIAS+4*8); | |
1831 stx(O5,SP,frame::register_save_words*wordSize+STACK_BIAS+5*8); | |
1832 | |
1833 // Save flags | |
1834 Register O5_save_flags = O5; | |
1835 rdccr( O5_save_flags ); | |
1836 | |
1837 { // count number of verifies | |
1838 Register O2_adr = O2; | |
1839 Register O3_accum = O3; | |
727 | 1840 inc_counter(StubRoutines::verify_oop_count_addr(), O2_adr, O3_accum); |
0 | 1841 } |
1842 | |
1843 Register O2_mask = O2; | |
1844 Register O3_bits = O3; | |
1845 Register O4_temp = O4; | |
1846 | |
1847 // mark lower end of faulting range | |
1848 assert(_verify_oop_implicit_branch[0] == NULL, "set once"); | |
1849 _verify_oop_implicit_branch[0] = pc(); | |
1850 | |
1851 // We can't check the mark oop because it could be in the process of | |
1852 // locking or unlocking while this is running. | |
1853 set(Universe::verify_oop_mask (), O2_mask); | |
1854 set(Universe::verify_oop_bits (), O3_bits); | |
1855 | |
1856 // assert((obj & oop_mask) == oop_bits); | |
1857 and3(O0_obj, O2_mask, O4_temp); | |
1858 cmp(O4_temp, O3_bits); | |
1859 brx(notEqual, false, pn, null_or_fail); | |
1860 delayed()->nop(); | |
1861 | |
1862 if ((NULL_WORD & Universe::verify_oop_mask()) == Universe::verify_oop_bits()) { | |
1863 // the null_or_fail case is useless; must test for null separately | |
1864 br_null(O0_obj, false, pn, succeed); | |
1865 delayed()->nop(); | |
1866 } | |
1867 | |
1868 // Check the klassOop of this object for being in the right area of memory. | |
1869 // Cannot do the load in the delay above slot in case O0 is null | |
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1870 load_klass(O0_obj, O0_obj); |
0 | 1871 // assert((klass & klass_mask) == klass_bits); |
1872 if( Universe::verify_klass_mask() != Universe::verify_oop_mask() ) | |
1873 set(Universe::verify_klass_mask(), O2_mask); | |
1874 if( Universe::verify_klass_bits() != Universe::verify_oop_bits() ) | |
1875 set(Universe::verify_klass_bits(), O3_bits); | |
1876 and3(O0_obj, O2_mask, O4_temp); | |
1877 cmp(O4_temp, O3_bits); | |
1878 brx(notEqual, false, pn, fail); | |
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1879 delayed()->nop(); |
0 | 1880 // Check the klass's klass |
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1881 load_klass(O0_obj, O0_obj); |
0 | 1882 and3(O0_obj, O2_mask, O4_temp); |
1883 cmp(O4_temp, O3_bits); | |
1884 brx(notEqual, false, pn, fail); | |
1885 delayed()->wrccr( O5_save_flags ); // Restore CCR's | |
1886 | |
1887 // mark upper end of faulting range | |
1888 _verify_oop_implicit_branch[1] = pc(); | |
1889 | |
1890 //----------------------- | |
1891 // all tests pass | |
1892 bind(succeed); | |
1893 | |
1894 // Restore prior 64-bit registers | |
1895 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+0*8,O0); | |
1896 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+1*8,O1); | |
1897 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+2*8,O2); | |
1898 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+3*8,O3); | |
1899 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+4*8,O4); | |
1900 ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+5*8,O5); | |
1901 | |
1902 retl(); // Leaf return; restore prior O7 in delay slot | |
1903 delayed()->ldx(SP,frame::register_save_words*wordSize+STACK_BIAS+7*8,O7); | |
1904 | |
1905 //----------------------- | |
1906 bind(null_or_fail); // nulls are less common but OK | |
1907 br_null(O0_obj, false, pt, succeed); | |
1908 delayed()->wrccr( O5_save_flags ); // Restore CCR's | |
1909 | |
1910 //----------------------- | |
1911 // report failure: | |
1912 bind(fail); | |
1913 _verify_oop_implicit_branch[2] = pc(); | |
1914 | |
1915 wrccr( O5_save_flags ); // Restore CCR's | |
1916 | |
1917 save_frame(::round_to(sizeof(RegistersForDebugging) / BytesPerWord, 2)); | |
1918 | |
1919 // stop_subroutine expects message pointer in I1. | |
1920 mov(I1, O1); | |
1921 | |
1922 // Restore prior 64-bit registers | |
1923 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+0*8,I0); | |
1924 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+1*8,I1); | |
1925 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+2*8,I2); | |
1926 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+3*8,I3); | |
1927 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+4*8,I4); | |
1928 ldx(FP,frame::register_save_words*wordSize+STACK_BIAS+5*8,I5); | |
1929 | |
1930 // factor long stop-sequence into subroutine to save space | |
1931 assert(StubRoutines::Sparc::stop_subroutine_entry_address(), "hasn't been generated yet"); | |
1932 | |
1933 // call indirectly to solve generation ordering problem | |
727 | 1934 AddressLiteral al(StubRoutines::Sparc::stop_subroutine_entry_address()); |
1935 load_ptr_contents(al, O5); | |
0 | 1936 jmpl(O5, 0, O7); |
1937 delayed()->nop(); | |
1938 } | |
1939 | |
1940 | |
1941 void MacroAssembler::stop(const char* msg) { | |
1942 // save frame first to get O7 for return address | |
1943 // add one word to size in case struct is odd number of words long | |
1944 // It must be doubleword-aligned for storing doubles into it. | |
1945 | |
1946 save_frame(::round_to(sizeof(RegistersForDebugging) / BytesPerWord, 2)); | |
1947 | |
1948 // stop_subroutine expects message pointer in I1. | |
1949 set((intptr_t)msg, O1); | |
1950 | |
1951 // factor long stop-sequence into subroutine to save space | |
1952 assert(StubRoutines::Sparc::stop_subroutine_entry_address(), "hasn't been generated yet"); | |
1953 | |
1954 // call indirectly to solve generation ordering problem | |
727 | 1955 AddressLiteral a(StubRoutines::Sparc::stop_subroutine_entry_address()); |
0 | 1956 load_ptr_contents(a, O5); |
1957 jmpl(O5, 0, O7); | |
1958 delayed()->nop(); | |
1959 | |
1960 breakpoint_trap(); // make stop actually stop rather than writing | |
1961 // unnoticeable results in the output files. | |
1962 | |
1963 // restore(); done in callee to save space! | |
1964 } | |
1965 | |
1966 | |
1967 void MacroAssembler::warn(const char* msg) { | |
1968 save_frame(::round_to(sizeof(RegistersForDebugging) / BytesPerWord, 2)); | |
1969 RegistersForDebugging::save_registers(this); | |
1970 mov(O0, L0); | |
1971 set((intptr_t)msg, O0); | |
1972 call( CAST_FROM_FN_PTR(address, warning) ); | |
1973 delayed()->nop(); | |
1974 // ret(); | |
1975 // delayed()->restore(); | |
1976 RegistersForDebugging::restore_registers(this, L0); | |
1977 restore(); | |
1978 } | |
1979 | |
1980 | |
1981 void MacroAssembler::untested(const char* what) { | |
1982 // We must be able to turn interactive prompting off | |
1983 // in order to run automated test scripts on the VM | |
1984 // Use the flag ShowMessageBoxOnError | |
1985 | |
1986 char* b = new char[1024]; | |
1987 sprintf(b, "untested: %s", what); | |
1988 | |
1989 if ( ShowMessageBoxOnError ) stop(b); | |
1990 else warn(b); | |
1991 } | |
1992 | |
1993 | |
1994 void MacroAssembler::stop_subroutine() { | |
1995 RegistersForDebugging::save_registers(this); | |
1996 | |
1997 // for the sake of the debugger, stick a PC on the current frame | |
1998 // (this assumes that the caller has performed an extra "save") | |
1999 mov(I7, L7); | |
2000 add(O7, -7 * BytesPerInt, I7); | |
2001 | |
2002 save_frame(); // one more save to free up another O7 register | |
2003 mov(I0, O1); // addr of reg save area | |
2004 | |
2005 // We expect pointer to message in I1. Caller must set it up in O1 | |
2006 mov(I1, O0); // get msg | |
2007 call (CAST_FROM_FN_PTR(address, MacroAssembler::debug), relocInfo::runtime_call_type); | |
2008 delayed()->nop(); | |
2009 | |
2010 restore(); | |
2011 | |
2012 RegistersForDebugging::restore_registers(this, O0); | |
2013 | |
2014 save_frame(0); | |
2015 call(CAST_FROM_FN_PTR(address,breakpoint)); | |
2016 delayed()->nop(); | |
2017 restore(); | |
2018 | |
2019 mov(L7, I7); | |
2020 retl(); | |
2021 delayed()->restore(); // see stop above | |
2022 } | |
2023 | |
2024 | |
2025 void MacroAssembler::debug(char* msg, RegistersForDebugging* regs) { | |
2026 if ( ShowMessageBoxOnError ) { | |
2027 JavaThreadState saved_state = JavaThread::current()->thread_state(); | |
2028 JavaThread::current()->set_thread_state(_thread_in_vm); | |
2029 { | |
2030 // In order to get locks work, we need to fake a in_VM state | |
2031 ttyLocker ttyl; | |
2032 ::tty->print_cr("EXECUTION STOPPED: %s\n", msg); | |
2033 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
2034 ::tty->print_cr("Interpreter::bytecode_counter = %d", BytecodeCounter::counter_value()); | |
2035 } | |
2036 if (os::message_box(msg, "Execution stopped, print registers?")) | |
2037 regs->print(::tty); | |
2038 } | |
2039 ThreadStateTransition::transition(JavaThread::current(), _thread_in_vm, saved_state); | |
2040 } | |
2041 else | |
2042 ::tty->print_cr("=============== DEBUG MESSAGE: %s ================\n", msg); | |
2043 assert(false, "error"); | |
2044 } | |
2045 | |
2046 | |
2047 #ifndef PRODUCT | |
2048 void MacroAssembler::test() { | |
2049 ResourceMark rm; | |
2050 | |
2051 CodeBuffer cb("test", 10000, 10000); | |
2052 MacroAssembler* a = new MacroAssembler(&cb); | |
2053 VM_Version::allow_all(); | |
2054 a->test_v9(); | |
2055 a->test_v8_onlys(); | |
2056 VM_Version::revert(); | |
2057 | |
2058 StubRoutines::Sparc::test_stop_entry()(); | |
2059 } | |
2060 #endif | |
2061 | |
2062 | |
2063 void MacroAssembler::calc_mem_param_words(Register Rparam_words, Register Rresult) { | |
2064 subcc( Rparam_words, Argument::n_register_parameters, Rresult); // how many mem words? | |
2065 Label no_extras; | |
2066 br( negative, true, pt, no_extras ); // if neg, clear reg | |
727 | 2067 delayed()->set(0, Rresult); // annuled, so only if taken |
0 | 2068 bind( no_extras ); |
2069 } | |
2070 | |
2071 | |
2072 void MacroAssembler::calc_frame_size(Register Rextra_words, Register Rresult) { | |
2073 #ifdef _LP64 | |
2074 add(Rextra_words, frame::memory_parameter_word_sp_offset, Rresult); | |
2075 #else | |
2076 add(Rextra_words, frame::memory_parameter_word_sp_offset + 1, Rresult); | |
2077 #endif | |
2078 bclr(1, Rresult); | |
2079 sll(Rresult, LogBytesPerWord, Rresult); // Rresult has total frame bytes | |
2080 } | |
2081 | |
2082 | |
2083 void MacroAssembler::calc_frame_size_and_save(Register Rextra_words, Register Rresult) { | |
2084 calc_frame_size(Rextra_words, Rresult); | |
2085 neg(Rresult); | |
2086 save(SP, Rresult, SP); | |
2087 } | |
2088 | |
2089 | |
2090 // --------------------------------------------------------- | |
2091 Assembler::RCondition cond2rcond(Assembler::Condition c) { | |
2092 switch (c) { | |
2093 /*case zero: */ | |
2094 case Assembler::equal: return Assembler::rc_z; | |
2095 case Assembler::lessEqual: return Assembler::rc_lez; | |
2096 case Assembler::less: return Assembler::rc_lz; | |
2097 /*case notZero:*/ | |
2098 case Assembler::notEqual: return Assembler::rc_nz; | |
2099 case Assembler::greater: return Assembler::rc_gz; | |
2100 case Assembler::greaterEqual: return Assembler::rc_gez; | |
2101 } | |
2102 ShouldNotReachHere(); | |
2103 return Assembler::rc_z; | |
2104 } | |
2105 | |
2106 // compares register with zero and branches. NOT FOR USE WITH 64-bit POINTERS | |
2107 void MacroAssembler::br_zero( Condition c, bool a, Predict p, Register s1, Label& L) { | |
2108 tst(s1); | |
2109 br (c, a, p, L); | |
2110 } | |
2111 | |
2112 | |
2113 // Compares a pointer register with zero and branches on null. | |
2114 // Does a test & branch on 32-bit systems and a register-branch on 64-bit. | |
2115 void MacroAssembler::br_null( Register s1, bool a, Predict p, Label& L ) { | |
2116 assert_not_delayed(); | |
2117 #ifdef _LP64 | |
2118 bpr( rc_z, a, p, s1, L ); | |
2119 #else | |
2120 tst(s1); | |
2121 br ( zero, a, p, L ); | |
2122 #endif | |
2123 } | |
2124 | |
2125 void MacroAssembler::br_notnull( Register s1, bool a, Predict p, Label& L ) { | |
2126 assert_not_delayed(); | |
2127 #ifdef _LP64 | |
2128 bpr( rc_nz, a, p, s1, L ); | |
2129 #else | |
2130 tst(s1); | |
2131 br ( notZero, a, p, L ); | |
2132 #endif | |
2133 } | |
2134 | |
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2135 void MacroAssembler::br_on_reg_cond( RCondition rc, bool a, Predict p, |
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2136 Register s1, address d, |
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2137 relocInfo::relocType rt ) { |
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2138 if (VM_Version::v9_instructions_work()) { |
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2139 bpr(rc, a, p, s1, d, rt); |
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2140 } else { |
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2141 tst(s1); |
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2142 br(reg_cond_to_cc_cond(rc), a, p, d, rt); |
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2143 } |
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2144 } |
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2145 |
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2146 void MacroAssembler::br_on_reg_cond( RCondition rc, bool a, Predict p, |
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2147 Register s1, Label& L ) { |
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2148 if (VM_Version::v9_instructions_work()) { |
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2149 bpr(rc, a, p, s1, L); |
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2150 } else { |
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2151 tst(s1); |
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2152 br(reg_cond_to_cc_cond(rc), a, p, L); |
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2153 } |
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2154 } |
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2155 |
0 | 2156 |
2157 // instruction sequences factored across compiler & interpreter | |
2158 | |
2159 | |
2160 void MacroAssembler::lcmp( Register Ra_hi, Register Ra_low, | |
2161 Register Rb_hi, Register Rb_low, | |
2162 Register Rresult) { | |
2163 | |
2164 Label check_low_parts, done; | |
2165 | |
2166 cmp(Ra_hi, Rb_hi ); // compare hi parts | |
2167 br(equal, true, pt, check_low_parts); | |
2168 delayed()->cmp(Ra_low, Rb_low); // test low parts | |
2169 | |
2170 // And, with an unsigned comparison, it does not matter if the numbers | |
2171 // are negative or not. | |
2172 // E.g., -2 cmp -1: the low parts are 0xfffffffe and 0xffffffff. | |
2173 // The second one is bigger (unsignedly). | |
2174 | |
2175 // Other notes: The first move in each triplet can be unconditional | |
2176 // (and therefore probably prefetchable). | |
2177 // And the equals case for the high part does not need testing, | |
2178 // since that triplet is reached only after finding the high halves differ. | |
2179 | |
2180 if (VM_Version::v9_instructions_work()) { | |
2181 | |
2182 mov ( -1, Rresult); | |
2183 ba( false, done ); delayed()-> movcc(greater, false, icc, 1, Rresult); | |
2184 } | |
2185 else { | |
2186 br(less, true, pt, done); delayed()-> set(-1, Rresult); | |
2187 br(greater, true, pt, done); delayed()-> set( 1, Rresult); | |
2188 } | |
2189 | |
2190 bind( check_low_parts ); | |
2191 | |
2192 if (VM_Version::v9_instructions_work()) { | |
2193 mov( -1, Rresult); | |
2194 movcc(equal, false, icc, 0, Rresult); | |
2195 movcc(greaterUnsigned, false, icc, 1, Rresult); | |
2196 } | |
2197 else { | |
2198 set(-1, Rresult); | |
2199 br(equal, true, pt, done); delayed()->set( 0, Rresult); | |
2200 br(greaterUnsigned, true, pt, done); delayed()->set( 1, Rresult); | |
2201 } | |
2202 bind( done ); | |
2203 } | |
2204 | |
2205 void MacroAssembler::lneg( Register Rhi, Register Rlow ) { | |
2206 subcc( G0, Rlow, Rlow ); | |
2207 subc( G0, Rhi, Rhi ); | |
2208 } | |
2209 | |
2210 void MacroAssembler::lshl( Register Rin_high, Register Rin_low, | |
2211 Register Rcount, | |
2212 Register Rout_high, Register Rout_low, | |
2213 Register Rtemp ) { | |
2214 | |
2215 | |
2216 Register Ralt_count = Rtemp; | |
2217 Register Rxfer_bits = Rtemp; | |
2218 | |
2219 assert( Ralt_count != Rin_high | |
2220 && Ralt_count != Rin_low | |
2221 && Ralt_count != Rcount | |
2222 && Rxfer_bits != Rin_low | |
2223 && Rxfer_bits != Rin_high | |
2224 && Rxfer_bits != Rcount | |
2225 && Rxfer_bits != Rout_low | |
2226 && Rout_low != Rin_high, | |
2227 "register alias checks"); | |
2228 | |
2229 Label big_shift, done; | |
2230 | |
2231 // This code can be optimized to use the 64 bit shifts in V9. | |
2232 // Here we use the 32 bit shifts. | |
2233 | |
2234 and3( Rcount, 0x3f, Rcount); // take least significant 6 bits | |
2235 subcc(Rcount, 31, Ralt_count); | |
2236 br(greater, true, pn, big_shift); | |
2237 delayed()-> | |
2238 dec(Ralt_count); | |
2239 | |
2240 // shift < 32 bits, Ralt_count = Rcount-31 | |
2241 | |
2242 // We get the transfer bits by shifting right by 32-count the low | |
2243 // register. This is done by shifting right by 31-count and then by one | |
2244 // more to take care of the special (rare) case where count is zero | |
2245 // (shifting by 32 would not work). | |
2246 | |
2247 neg( Ralt_count ); | |
2248 | |
2249 // The order of the next two instructions is critical in the case where | |
2250 // Rin and Rout are the same and should not be reversed. | |
2251 | |
2252 srl( Rin_low, Ralt_count, Rxfer_bits ); // shift right by 31-count | |
2253 if (Rcount != Rout_low) { | |
2254 sll( Rin_low, Rcount, Rout_low ); // low half | |
2255 } | |
2256 sll( Rin_high, Rcount, Rout_high ); | |
2257 if (Rcount == Rout_low) { | |
2258 sll( Rin_low, Rcount, Rout_low ); // low half | |
2259 } | |
2260 srl( Rxfer_bits, 1, Rxfer_bits ); // shift right by one more | |
2261 ba (false, done); | |
2262 delayed()-> | |
2263 or3( Rout_high, Rxfer_bits, Rout_high); // new hi value: or in shifted old hi part and xfer from low | |
2264 | |
2265 // shift >= 32 bits, Ralt_count = Rcount-32 | |
2266 bind(big_shift); | |
2267 sll( Rin_low, Ralt_count, Rout_high ); | |
2268 clr( Rout_low ); | |
2269 | |
2270 bind(done); | |
2271 } | |
2272 | |
2273 | |
2274 void MacroAssembler::lshr( Register Rin_high, Register Rin_low, | |
2275 Register Rcount, | |
2276 Register Rout_high, Register Rout_low, | |
2277 Register Rtemp ) { | |
2278 | |
2279 Register Ralt_count = Rtemp; | |
2280 Register Rxfer_bits = Rtemp; | |
2281 | |
2282 assert( Ralt_count != Rin_high | |
2283 && Ralt_count != Rin_low | |
2284 && Ralt_count != Rcount | |
2285 && Rxfer_bits != Rin_low | |
2286 && Rxfer_bits != Rin_high | |
2287 && Rxfer_bits != Rcount | |
2288 && Rxfer_bits != Rout_high | |
2289 && Rout_high != Rin_low, | |
2290 "register alias checks"); | |
2291 | |
2292 Label big_shift, done; | |
2293 | |
2294 // This code can be optimized to use the 64 bit shifts in V9. | |
2295 // Here we use the 32 bit shifts. | |
2296 | |
2297 and3( Rcount, 0x3f, Rcount); // take least significant 6 bits | |
2298 subcc(Rcount, 31, Ralt_count); | |
2299 br(greater, true, pn, big_shift); | |
2300 delayed()->dec(Ralt_count); | |
2301 | |
2302 // shift < 32 bits, Ralt_count = Rcount-31 | |
2303 | |
2304 // We get the transfer bits by shifting left by 32-count the high | |
2305 // register. This is done by shifting left by 31-count and then by one | |
2306 // more to take care of the special (rare) case where count is zero | |
2307 // (shifting by 32 would not work). | |
2308 | |
2309 neg( Ralt_count ); | |
2310 if (Rcount != Rout_low) { | |
2311 srl( Rin_low, Rcount, Rout_low ); | |
2312 } | |
2313 | |
2314 // The order of the next two instructions is critical in the case where | |
2315 // Rin and Rout are the same and should not be reversed. | |
2316 | |
2317 sll( Rin_high, Ralt_count, Rxfer_bits ); // shift left by 31-count | |
2318 sra( Rin_high, Rcount, Rout_high ); // high half | |
2319 sll( Rxfer_bits, 1, Rxfer_bits ); // shift left by one more | |
2320 if (Rcount == Rout_low) { | |
2321 srl( Rin_low, Rcount, Rout_low ); | |
2322 } | |
2323 ba (false, done); | |
2324 delayed()-> | |
2325 or3( Rout_low, Rxfer_bits, Rout_low ); // new low value: or shifted old low part and xfer from high | |
2326 | |
2327 // shift >= 32 bits, Ralt_count = Rcount-32 | |
2328 bind(big_shift); | |
2329 | |
2330 sra( Rin_high, Ralt_count, Rout_low ); | |
2331 sra( Rin_high, 31, Rout_high ); // sign into hi | |
2332 | |
2333 bind( done ); | |
2334 } | |
2335 | |
2336 | |
2337 | |
2338 void MacroAssembler::lushr( Register Rin_high, Register Rin_low, | |
2339 Register Rcount, | |
2340 Register Rout_high, Register Rout_low, | |
2341 Register Rtemp ) { | |
2342 | |
2343 Register Ralt_count = Rtemp; | |
2344 Register Rxfer_bits = Rtemp; | |
2345 | |
2346 assert( Ralt_count != Rin_high | |
2347 && Ralt_count != Rin_low | |
2348 && Ralt_count != Rcount | |
2349 && Rxfer_bits != Rin_low | |
2350 && Rxfer_bits != Rin_high | |
2351 && Rxfer_bits != Rcount | |
2352 && Rxfer_bits != Rout_high | |
2353 && Rout_high != Rin_low, | |
2354 "register alias checks"); | |
2355 | |
2356 Label big_shift, done; | |
2357 | |
2358 // This code can be optimized to use the 64 bit shifts in V9. | |
2359 // Here we use the 32 bit shifts. | |
2360 | |
2361 and3( Rcount, 0x3f, Rcount); // take least significant 6 bits | |
2362 subcc(Rcount, 31, Ralt_count); | |
2363 br(greater, true, pn, big_shift); | |
2364 delayed()->dec(Ralt_count); | |
2365 | |
2366 // shift < 32 bits, Ralt_count = Rcount-31 | |
2367 | |
2368 // We get the transfer bits by shifting left by 32-count the high | |
2369 // register. This is done by shifting left by 31-count and then by one | |
2370 // more to take care of the special (rare) case where count is zero | |
2371 // (shifting by 32 would not work). | |
2372 | |
2373 neg( Ralt_count ); | |
2374 if (Rcount != Rout_low) { | |
2375 srl( Rin_low, Rcount, Rout_low ); | |
2376 } | |
2377 | |
2378 // The order of the next two instructions is critical in the case where | |
2379 // Rin and Rout are the same and should not be reversed. | |
2380 | |
2381 sll( Rin_high, Ralt_count, Rxfer_bits ); // shift left by 31-count | |
2382 srl( Rin_high, Rcount, Rout_high ); // high half | |
2383 sll( Rxfer_bits, 1, Rxfer_bits ); // shift left by one more | |
2384 if (Rcount == Rout_low) { | |
2385 srl( Rin_low, Rcount, Rout_low ); | |
2386 } | |
2387 ba (false, done); | |
2388 delayed()-> | |
2389 or3( Rout_low, Rxfer_bits, Rout_low ); // new low value: or shifted old low part and xfer from high | |
2390 | |
2391 // shift >= 32 bits, Ralt_count = Rcount-32 | |
2392 bind(big_shift); | |
2393 | |
2394 srl( Rin_high, Ralt_count, Rout_low ); | |
2395 clr( Rout_high ); | |
2396 | |
2397 bind( done ); | |
2398 } | |
2399 | |
2400 #ifdef _LP64 | |
2401 void MacroAssembler::lcmp( Register Ra, Register Rb, Register Rresult) { | |
2402 cmp(Ra, Rb); | |
2403 mov( -1, Rresult); | |
2404 movcc(equal, false, xcc, 0, Rresult); | |
2405 movcc(greater, false, xcc, 1, Rresult); | |
2406 } | |
2407 #endif | |
2408 | |
2409 | |
1503 | 2410 void MacroAssembler::load_sized_value(Address src, Register dst, |
2411 size_t size_in_bytes, bool is_signed) { | |
2412 switch (size_in_bytes) { | |
2413 case 8: ldx(src, dst); break; | |
2414 case 4: ld( src, dst); break; | |
2415 case 2: is_signed ? ldsh(src, dst) : lduh(src, dst); break; | |
2416 case 1: is_signed ? ldsb(src, dst) : ldub(src, dst); break; | |
2417 default: ShouldNotReachHere(); | |
2418 } | |
2419 } | |
2420 | |
2421 | |
0 | 2422 void MacroAssembler::float_cmp( bool is_float, int unordered_result, |
2423 FloatRegister Fa, FloatRegister Fb, | |
2424 Register Rresult) { | |
2425 | |
2426 fcmp(is_float ? FloatRegisterImpl::S : FloatRegisterImpl::D, fcc0, Fa, Fb); | |
2427 | |
2428 Condition lt = unordered_result == -1 ? f_unorderedOrLess : f_less; | |
2429 Condition eq = f_equal; | |
2430 Condition gt = unordered_result == 1 ? f_unorderedOrGreater : f_greater; | |
2431 | |
2432 if (VM_Version::v9_instructions_work()) { | |
2433 | |
2434 mov( -1, Rresult ); | |
2435 movcc( eq, true, fcc0, 0, Rresult ); | |
2436 movcc( gt, true, fcc0, 1, Rresult ); | |
2437 | |
2438 } else { | |
2439 Label done; | |
2440 | |
2441 set( -1, Rresult ); | |
2442 //fb(lt, true, pn, done); delayed()->set( -1, Rresult ); | |
2443 fb( eq, true, pn, done); delayed()->set( 0, Rresult ); | |
2444 fb( gt, true, pn, done); delayed()->set( 1, Rresult ); | |
2445 | |
2446 bind (done); | |
2447 } | |
2448 } | |
2449 | |
2450 | |
2451 void MacroAssembler::fneg( FloatRegisterImpl::Width w, FloatRegister s, FloatRegister d) | |
2452 { | |
2453 if (VM_Version::v9_instructions_work()) { | |
2454 Assembler::fneg(w, s, d); | |
2455 } else { | |
2456 if (w == FloatRegisterImpl::S) { | |
2457 Assembler::fneg(w, s, d); | |
2458 } else if (w == FloatRegisterImpl::D) { | |
2459 // number() does a sanity check on the alignment. | |
2460 assert(((s->encoding(FloatRegisterImpl::D) & 1) == 0) && | |
2461 ((d->encoding(FloatRegisterImpl::D) & 1) == 0), "float register alignment check"); | |
2462 | |
2463 Assembler::fneg(FloatRegisterImpl::S, s, d); | |
2464 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2465 } else { | |
2466 assert(w == FloatRegisterImpl::Q, "Invalid float register width"); | |
2467 | |
2468 // number() does a sanity check on the alignment. | |
2469 assert(((s->encoding(FloatRegisterImpl::D) & 3) == 0) && | |
2470 ((d->encoding(FloatRegisterImpl::D) & 3) == 0), "float register alignment check"); | |
2471 | |
2472 Assembler::fneg(FloatRegisterImpl::S, s, d); | |
2473 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2474 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor(), d->successor()->successor()); | |
2475 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor()->successor(), d->successor()->successor()->successor()); | |
2476 } | |
2477 } | |
2478 } | |
2479 | |
2480 void MacroAssembler::fmov( FloatRegisterImpl::Width w, FloatRegister s, FloatRegister d) | |
2481 { | |
2482 if (VM_Version::v9_instructions_work()) { | |
2483 Assembler::fmov(w, s, d); | |
2484 } else { | |
2485 if (w == FloatRegisterImpl::S) { | |
2486 Assembler::fmov(w, s, d); | |
2487 } else if (w == FloatRegisterImpl::D) { | |
2488 // number() does a sanity check on the alignment. | |
2489 assert(((s->encoding(FloatRegisterImpl::D) & 1) == 0) && | |
2490 ((d->encoding(FloatRegisterImpl::D) & 1) == 0), "float register alignment check"); | |
2491 | |
2492 Assembler::fmov(FloatRegisterImpl::S, s, d); | |
2493 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2494 } else { | |
2495 assert(w == FloatRegisterImpl::Q, "Invalid float register width"); | |
2496 | |
2497 // number() does a sanity check on the alignment. | |
2498 assert(((s->encoding(FloatRegisterImpl::D) & 3) == 0) && | |
2499 ((d->encoding(FloatRegisterImpl::D) & 3) == 0), "float register alignment check"); | |
2500 | |
2501 Assembler::fmov(FloatRegisterImpl::S, s, d); | |
2502 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2503 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor(), d->successor()->successor()); | |
2504 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor()->successor(), d->successor()->successor()->successor()); | |
2505 } | |
2506 } | |
2507 } | |
2508 | |
2509 void MacroAssembler::fabs( FloatRegisterImpl::Width w, FloatRegister s, FloatRegister d) | |
2510 { | |
2511 if (VM_Version::v9_instructions_work()) { | |
2512 Assembler::fabs(w, s, d); | |
2513 } else { | |
2514 if (w == FloatRegisterImpl::S) { | |
2515 Assembler::fabs(w, s, d); | |
2516 } else if (w == FloatRegisterImpl::D) { | |
2517 // number() does a sanity check on the alignment. | |
2518 assert(((s->encoding(FloatRegisterImpl::D) & 1) == 0) && | |
2519 ((d->encoding(FloatRegisterImpl::D) & 1) == 0), "float register alignment check"); | |
2520 | |
2521 Assembler::fabs(FloatRegisterImpl::S, s, d); | |
2522 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2523 } else { | |
2524 assert(w == FloatRegisterImpl::Q, "Invalid float register width"); | |
2525 | |
2526 // number() does a sanity check on the alignment. | |
2527 assert(((s->encoding(FloatRegisterImpl::D) & 3) == 0) && | |
2528 ((d->encoding(FloatRegisterImpl::D) & 3) == 0), "float register alignment check"); | |
2529 | |
2530 Assembler::fabs(FloatRegisterImpl::S, s, d); | |
2531 Assembler::fmov(FloatRegisterImpl::S, s->successor(), d->successor()); | |
2532 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor(), d->successor()->successor()); | |
2533 Assembler::fmov(FloatRegisterImpl::S, s->successor()->successor()->successor(), d->successor()->successor()->successor()); | |
2534 } | |
2535 } | |
2536 } | |
2537 | |
2538 void MacroAssembler::save_all_globals_into_locals() { | |
2539 mov(G1,L1); | |
2540 mov(G2,L2); | |
2541 mov(G3,L3); | |
2542 mov(G4,L4); | |
2543 mov(G5,L5); | |
2544 mov(G6,L6); | |
2545 mov(G7,L7); | |
2546 } | |
2547 | |
2548 void MacroAssembler::restore_globals_from_locals() { | |
2549 mov(L1,G1); | |
2550 mov(L2,G2); | |
2551 mov(L3,G3); | |
2552 mov(L4,G4); | |
2553 mov(L5,G5); | |
2554 mov(L6,G6); | |
2555 mov(L7,G7); | |
2556 } | |
2557 | |
2558 // Use for 64 bit operation. | |
2559 void MacroAssembler::casx_under_lock(Register top_ptr_reg, Register top_reg, Register ptr_reg, address lock_addr, bool use_call_vm) | |
2560 { | |
2561 // store ptr_reg as the new top value | |
2562 #ifdef _LP64 | |
2563 casx(top_ptr_reg, top_reg, ptr_reg); | |
2564 #else | |
2565 cas_under_lock(top_ptr_reg, top_reg, ptr_reg, lock_addr, use_call_vm); | |
2566 #endif // _LP64 | |
2567 } | |
2568 | |
2569 // [RGV] This routine does not handle 64 bit operations. | |
2570 // use casx_under_lock() or casx directly!!! | |
2571 void MacroAssembler::cas_under_lock(Register top_ptr_reg, Register top_reg, Register ptr_reg, address lock_addr, bool use_call_vm) | |
2572 { | |
2573 // store ptr_reg as the new top value | |
2574 if (VM_Version::v9_instructions_work()) { | |
2575 cas(top_ptr_reg, top_reg, ptr_reg); | |
2576 } else { | |
2577 | |
2578 // If the register is not an out nor global, it is not visible | |
2579 // after the save. Allocate a register for it, save its | |
2580 // value in the register save area (the save may not flush | |
2581 // registers to the save area). | |
2582 | |
2583 Register top_ptr_reg_after_save; | |
2584 Register top_reg_after_save; | |
2585 Register ptr_reg_after_save; | |
2586 | |
2587 if (top_ptr_reg->is_out() || top_ptr_reg->is_global()) { | |
2588 top_ptr_reg_after_save = top_ptr_reg->after_save(); | |
2589 } else { | |
2590 Address reg_save_addr = top_ptr_reg->address_in_saved_window(); | |
2591 top_ptr_reg_after_save = L0; | |
2592 st(top_ptr_reg, reg_save_addr); | |
2593 } | |
2594 | |
2595 if (top_reg->is_out() || top_reg->is_global()) { | |
2596 top_reg_after_save = top_reg->after_save(); | |
2597 } else { | |
2598 Address reg_save_addr = top_reg->address_in_saved_window(); | |
2599 top_reg_after_save = L1; | |
2600 st(top_reg, reg_save_addr); | |
2601 } | |
2602 | |
2603 if (ptr_reg->is_out() || ptr_reg->is_global()) { | |
2604 ptr_reg_after_save = ptr_reg->after_save(); | |
2605 } else { | |
2606 Address reg_save_addr = ptr_reg->address_in_saved_window(); | |
2607 ptr_reg_after_save = L2; | |
2608 st(ptr_reg, reg_save_addr); | |
2609 } | |
2610 | |
2611 const Register& lock_reg = L3; | |
2612 const Register& lock_ptr_reg = L4; | |
2613 const Register& value_reg = L5; | |
2614 const Register& yield_reg = L6; | |
2615 const Register& yieldall_reg = L7; | |
2616 | |
2617 save_frame(); | |
2618 | |
2619 if (top_ptr_reg_after_save == L0) { | |
2620 ld(top_ptr_reg->address_in_saved_window().after_save(), top_ptr_reg_after_save); | |
2621 } | |
2622 | |
2623 if (top_reg_after_save == L1) { | |
2624 ld(top_reg->address_in_saved_window().after_save(), top_reg_after_save); | |
2625 } | |
2626 | |
2627 if (ptr_reg_after_save == L2) { | |
2628 ld(ptr_reg->address_in_saved_window().after_save(), ptr_reg_after_save); | |
2629 } | |
2630 | |
2631 Label(retry_get_lock); | |
2632 Label(not_same); | |
2633 Label(dont_yield); | |
2634 | |
2635 assert(lock_addr, "lock_address should be non null for v8"); | |
2636 set((intptr_t)lock_addr, lock_ptr_reg); | |
2637 // Initialize yield counter | |
2638 mov(G0,yield_reg); | |
2639 mov(G0, yieldall_reg); | |
2640 set(StubRoutines::Sparc::locked, lock_reg); | |
2641 | |
2642 bind(retry_get_lock); | |
2643 cmp(yield_reg, V8AtomicOperationUnderLockSpinCount); | |
2644 br(Assembler::less, false, Assembler::pt, dont_yield); | |
2645 delayed()->nop(); | |
2646 | |
2647 if(use_call_vm) { | |
2648 Untested("Need to verify global reg consistancy"); | |
2649 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::yield_all), yieldall_reg); | |
2650 } else { | |
2651 // Save the regs and make space for a C call | |
2652 save(SP, -96, SP); | |
2653 save_all_globals_into_locals(); | |
2654 call(CAST_FROM_FN_PTR(address,os::yield_all)); | |
2655 delayed()->mov(yieldall_reg, O0); | |
2656 restore_globals_from_locals(); | |
2657 restore(); | |
2658 } | |
2659 | |
2660 // reset the counter | |
2661 mov(G0,yield_reg); | |
2662 add(yieldall_reg, 1, yieldall_reg); | |
2663 | |
2664 bind(dont_yield); | |
2665 // try to get lock | |
2666 swap(lock_ptr_reg, 0, lock_reg); | |
2667 | |
2668 // did we get the lock? | |
2669 cmp(lock_reg, StubRoutines::Sparc::unlocked); | |
2670 br(Assembler::notEqual, true, Assembler::pn, retry_get_lock); | |
2671 delayed()->add(yield_reg,1,yield_reg); | |
2672 | |
2673 // yes, got lock. do we have the same top? | |
2674 ld(top_ptr_reg_after_save, 0, value_reg); | |
2675 cmp(value_reg, top_reg_after_save); | |
2676 br(Assembler::notEqual, false, Assembler::pn, not_same); | |
2677 delayed()->nop(); | |
2678 | |
2679 // yes, same top. | |
2680 st(ptr_reg_after_save, top_ptr_reg_after_save, 0); | |
2681 membar(Assembler::StoreStore); | |
2682 | |
2683 bind(not_same); | |
2684 mov(value_reg, ptr_reg_after_save); | |
2685 st(lock_reg, lock_ptr_reg, 0); // unlock | |
2686 | |
2687 restore(); | |
2688 } | |
2689 } | |
2690 | |
665
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2691 RegisterOrConstant MacroAssembler::delayed_value_impl(intptr_t* delayed_value_addr, |
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2692 Register tmp, |
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2693 int offset) { |
622
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2694 intptr_t value = *delayed_value_addr; |
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|
2695 if (value != 0) |
665
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|
2696 return RegisterOrConstant(value + offset); |
622
56aae7be60d4
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|
2697 |
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|
2698 // load indirectly to solve generation ordering problem |
727 | 2699 AddressLiteral a(delayed_value_addr); |
622
56aae7be60d4
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|
2700 load_ptr_contents(a, tmp); |
56aae7be60d4
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diff
changeset
|
2701 |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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diff
changeset
|
2702 #ifdef ASSERT |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
jrose
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420
diff
changeset
|
2703 tst(tmp); |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
jrose
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diff
changeset
|
2704 breakpoint_trap(zero, xcc); |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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diff
changeset
|
2705 #endif |
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diff
changeset
|
2706 |
56aae7be60d4
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diff
changeset
|
2707 if (offset != 0) |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
jrose
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diff
changeset
|
2708 add(tmp, offset, tmp); |
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
jrose
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diff
changeset
|
2709 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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644
diff
changeset
|
2710 return RegisterOrConstant(tmp); |
622
56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
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diff
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|
2711 } |
56aae7be60d4
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diff
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|
2712 |
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2713 |
1503 | 2714 RegisterOrConstant MacroAssembler::regcon_andn_ptr(RegisterOrConstant s1, RegisterOrConstant s2, RegisterOrConstant d, Register temp) { |
2715 assert(d.register_or_noreg() != G0, "lost side effect"); | |
2716 if ((s2.is_constant() && s2.as_constant() == 0) || | |
2717 (s2.is_register() && s2.as_register() == G0)) { | |
2718 // Do nothing, just move value. | |
2719 if (s1.is_register()) { | |
2720 if (d.is_constant()) d = temp; | |
2721 mov(s1.as_register(), d.as_register()); | |
2722 return d; | |
2723 } else { | |
2724 return s1; | |
2725 } | |
2726 } | |
2727 | |
2728 if (s1.is_register()) { | |
2729 assert_different_registers(s1.as_register(), temp); | |
2730 if (d.is_constant()) d = temp; | |
2731 andn(s1.as_register(), ensure_simm13_or_reg(s2, temp), d.as_register()); | |
2732 return d; | |
623
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|
2733 } else { |
1503 | 2734 if (s2.is_register()) { |
2735 assert_different_registers(s2.as_register(), temp); | |
2736 if (d.is_constant()) d = temp; | |
2737 set(s1.as_constant(), temp); | |
2738 andn(temp, s2.as_register(), d.as_register()); | |
2739 return d; | |
2740 } else { | |
2741 intptr_t res = s1.as_constant() & ~s2.as_constant(); | |
2742 return res; | |
2743 } | |
623
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|
2744 } |
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|
2745 } |
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|
2746 |
1503 | 2747 RegisterOrConstant MacroAssembler::regcon_inc_ptr(RegisterOrConstant s1, RegisterOrConstant s2, RegisterOrConstant d, Register temp) { |
2748 assert(d.register_or_noreg() != G0, "lost side effect"); | |
2749 if ((s2.is_constant() && s2.as_constant() == 0) || | |
2750 (s2.is_register() && s2.as_register() == G0)) { | |
2751 // Do nothing, just move value. | |
2752 if (s1.is_register()) { | |
2753 if (d.is_constant()) d = temp; | |
2754 mov(s1.as_register(), d.as_register()); | |
2755 return d; | |
2756 } else { | |
2757 return s1; | |
2758 } | |
2759 } | |
2760 | |
2761 if (s1.is_register()) { | |
2762 assert_different_registers(s1.as_register(), temp); | |
2763 if (d.is_constant()) d = temp; | |
2764 add(s1.as_register(), ensure_simm13_or_reg(s2, temp), d.as_register()); | |
2765 return d; | |
623
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2766 } else { |
1503 | 2767 if (s2.is_register()) { |
2768 assert_different_registers(s2.as_register(), temp); | |
2769 if (d.is_constant()) d = temp; | |
2770 add(s2.as_register(), ensure_simm13_or_reg(s1, temp), d.as_register()); | |
2771 return d; | |
2772 } else { | |
2773 intptr_t res = s1.as_constant() + s2.as_constant(); | |
2774 return res; | |
2775 } | |
2776 } | |
2777 } | |
2778 | |
2779 RegisterOrConstant MacroAssembler::regcon_sll_ptr(RegisterOrConstant s1, RegisterOrConstant s2, RegisterOrConstant d, Register temp) { | |
2780 assert(d.register_or_noreg() != G0, "lost side effect"); | |
2781 if (!is_simm13(s2.constant_or_zero())) | |
2782 s2 = (s2.as_constant() & 0xFF); | |
2783 if ((s2.is_constant() && s2.as_constant() == 0) || | |
2784 (s2.is_register() && s2.as_register() == G0)) { | |
2785 // Do nothing, just move value. | |
2786 if (s1.is_register()) { | |
2787 if (d.is_constant()) d = temp; | |
2788 mov(s1.as_register(), d.as_register()); | |
2789 return d; | |
2790 } else { | |
2791 return s1; | |
2792 } | |
2793 } | |
2794 | |
2795 if (s1.is_register()) { | |
2796 assert_different_registers(s1.as_register(), temp); | |
2797 if (d.is_constant()) d = temp; | |
2798 sll_ptr(s1.as_register(), ensure_simm13_or_reg(s2, temp), d.as_register()); | |
2799 return d; | |
2800 } else { | |
2801 if (s2.is_register()) { | |
2802 assert_different_registers(s2.as_register(), temp); | |
2803 if (d.is_constant()) d = temp; | |
2804 set(s1.as_constant(), temp); | |
2805 sll_ptr(temp, s2.as_register(), d.as_register()); | |
2806 return d; | |
2807 } else { | |
2808 intptr_t res = s1.as_constant() << s2.as_constant(); | |
2809 return res; | |
2810 } | |
623
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|
2811 } |
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|
2812 } |
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|
2813 |
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|
2814 |
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|
2815 // Look up the method for a megamorphic invokeinterface call. |
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2816 // The target method is determined by <intf_klass, itable_index>. |
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2817 // The receiver klass is in recv_klass. |
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2818 // On success, the result will be in method_result, and execution falls through. |
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2819 // On failure, execution transfers to the given label. |
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|
2820 void MacroAssembler::lookup_interface_method(Register recv_klass, |
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|
2821 Register intf_klass, |
665
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|
2822 RegisterOrConstant itable_index, |
623
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2823 Register method_result, |
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2824 Register scan_temp, |
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|
2825 Register sethi_temp, |
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|
2826 Label& L_no_such_interface) { |
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|
2827 assert_different_registers(recv_klass, intf_klass, method_result, scan_temp); |
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|
2828 assert(itable_index.is_constant() || itable_index.as_register() == method_result, |
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2829 "caller must use same register for non-constant itable index as for method"); |
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|
2830 |
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|
2831 // Compute start of first itableOffsetEntry (which is at the end of the vtable) |
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|
2832 int vtable_base = instanceKlass::vtable_start_offset() * wordSize; |
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|
2833 int scan_step = itableOffsetEntry::size() * wordSize; |
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|
2834 int vte_size = vtableEntry::size() * wordSize; |
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|
2835 |
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|
2836 lduw(recv_klass, instanceKlass::vtable_length_offset() * wordSize, scan_temp); |
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|
2837 // %%% We should store the aligned, prescaled offset in the klassoop. |
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|
2838 // Then the next several instructions would fold away. |
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|
2839 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2840 int round_to_unit = ((HeapWordsPerLong > 1) ? BytesPerLong : 0); |
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|
2841 int itb_offset = vtable_base; |
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changeset
|
2842 if (round_to_unit != 0) { |
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changeset
|
2843 // hoist first instruction of round_to(scan_temp, BytesPerLong): |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2844 itb_offset += round_to_unit - wordSize; |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2845 } |
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|
2846 int itb_scale = exact_log2(vtableEntry::size() * wordSize); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2847 sll(scan_temp, itb_scale, scan_temp); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2848 add(scan_temp, itb_offset, scan_temp); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2849 if (round_to_unit != 0) { |
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changeset
|
2850 // Round up to align_object_offset boundary |
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|
2851 // see code for instanceKlass::start_of_itable! |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2852 // Was: round_to(scan_temp, BytesPerLong); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2853 // Hoisted: add(scan_temp, BytesPerLong-1, scan_temp); |
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|
2854 and3(scan_temp, -round_to_unit, scan_temp); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2855 } |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2856 add(recv_klass, scan_temp, scan_temp); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
changeset
|
2857 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2858 // Adjust recv_klass by scaled itable_index, so we can free itable_index. |
665
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6814659: separable cleanups and subroutines for 6655638
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|
2859 RegisterOrConstant itable_offset = itable_index; |
1503 | 2860 itable_offset = regcon_sll_ptr(itable_index, exact_log2(itableMethodEntry::size() * wordSize), itable_offset); |
2861 itable_offset = regcon_inc_ptr(itable_offset, itableMethodEntry::method_offset_in_bytes(), itable_offset); | |
1006
dcf03e02b020
6879902: CTW failure jdk6_18/hotspot/src/cpu/sparc/vm/assembler_sparc.hpp:845
twisti
parents:
986
diff
changeset
|
2862 add(recv_klass, ensure_simm13_or_reg(itable_offset, sethi_temp), recv_klass); |
623
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2863 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2864 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) { |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2865 // if (scan->interface() == intf) { |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2866 // result = (klass + scan->offset() + itable_index); |
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|
2867 // } |
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|
2868 // } |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2869 Label search, found_method; |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2870 |
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|
2871 for (int peel = 1; peel >= 0; peel--) { |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2872 // %%%% Could load both offset and interface in one ldx, if they were |
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|
2873 // in the opposite order. This would save a load. |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2874 ld_ptr(scan_temp, itableOffsetEntry::interface_offset_in_bytes(), method_result); |
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|
2875 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2876 // Check that this entry is non-null. A null entry means that |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2877 // the receiver class doesn't implement the interface, and wasn't the |
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|
2878 // same as when the caller was compiled. |
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changeset
|
2879 bpr(Assembler::rc_z, false, Assembler::pn, method_result, L_no_such_interface); |
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|
2880 delayed()->cmp(method_result, intf_klass); |
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changeset
|
2881 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2882 if (peel) { |
9adddb8c0fc8
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|
2883 brx(Assembler::equal, false, Assembler::pt, found_method); |
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|
2884 } else { |
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|
2885 brx(Assembler::notEqual, false, Assembler::pn, search); |
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changeset
|
2886 // (invert the test to fall through to found_method...) |
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|
2887 } |
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|
2888 delayed()->add(scan_temp, scan_step, scan_temp); |
9adddb8c0fc8
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changeset
|
2889 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
changeset
|
2890 if (!peel) break; |
9adddb8c0fc8
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diff
changeset
|
2891 |
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changeset
|
2892 bind(search); |
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changeset
|
2893 } |
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changeset
|
2894 |
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changeset
|
2895 bind(found_method); |
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changeset
|
2896 |
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|
2897 // Got a hit. |
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changeset
|
2898 int ito_offset = itableOffsetEntry::offset_offset_in_bytes(); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
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|
2899 // scan_temp[-scan_step] points to the vtable offset we need |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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changeset
|
2900 ito_offset -= scan_step; |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
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|
2901 lduw(scan_temp, ito_offset, scan_temp); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
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|
2902 ld_ptr(recv_klass, scan_temp, method_result); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2903 } |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2904 |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
2905 |
644
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diff
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|
2906 void MacroAssembler::check_klass_subtype(Register sub_klass, |
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diff
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|
2907 Register super_klass, |
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642
diff
changeset
|
2908 Register temp_reg, |
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diff
changeset
|
2909 Register temp2_reg, |
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diff
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|
2910 Label& L_success) { |
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diff
changeset
|
2911 Label L_failure, L_pop_to_failure; |
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diff
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|
2912 check_klass_subtype_fast_path(sub_klass, super_klass, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
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|
2913 temp_reg, temp2_reg, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2914 &L_success, &L_failure, NULL); |
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diff
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|
2915 Register sub_2 = sub_klass; |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2916 Register sup_2 = super_klass; |
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diff
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|
2917 if (!sub_2->is_global()) sub_2 = L0; |
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diff
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|
2918 if (!sup_2->is_global()) sup_2 = L1; |
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diff
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|
2919 |
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|
2920 save_frame_and_mov(0, sub_klass, sub_2, super_klass, sup_2); |
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|
2921 check_klass_subtype_slow_path(sub_2, sup_2, |
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diff
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|
2922 L2, L3, L4, L5, |
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diff
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|
2923 NULL, &L_pop_to_failure); |
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diff
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|
2924 |
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diff
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|
2925 // on success: |
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diff
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|
2926 restore(); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2927 ba(false, L_success); |
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diff
changeset
|
2928 delayed()->nop(); |
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diff
changeset
|
2929 |
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diff
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|
2930 // on failure: |
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diff
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|
2931 bind(L_pop_to_failure); |
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|
2932 restore(); |
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diff
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|
2933 bind(L_failure); |
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|
2934 } |
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diff
changeset
|
2935 |
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diff
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|
2936 |
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|
2937 void MacroAssembler::check_klass_subtype_fast_path(Register sub_klass, |
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diff
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|
2938 Register super_klass, |
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diff
changeset
|
2939 Register temp_reg, |
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diff
changeset
|
2940 Register temp2_reg, |
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diff
changeset
|
2941 Label* L_success, |
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642
diff
changeset
|
2942 Label* L_failure, |
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diff
changeset
|
2943 Label* L_slow_path, |
665
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6814659: separable cleanups and subroutines for 6655638
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diff
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|
2944 RegisterOrConstant super_check_offset, |
644
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diff
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|
2945 Register instanceof_hack) { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2946 int sc_offset = (klassOopDesc::header_size() * HeapWordSize + |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2947 Klass::secondary_super_cache_offset_in_bytes()); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2948 int sco_offset = (klassOopDesc::header_size() * HeapWordSize + |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2949 Klass::super_check_offset_offset_in_bytes()); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
2950 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2951 bool must_load_sco = (super_check_offset.constant_or_zero() == -1); |
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diff
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|
2952 bool need_slow_path = (must_load_sco || |
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diff
changeset
|
2953 super_check_offset.constant_or_zero() == sco_offset); |
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diff
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|
2954 |
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diff
changeset
|
2955 assert_different_registers(sub_klass, super_klass, temp_reg); |
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diff
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|
2956 if (super_check_offset.is_register()) { |
1503 | 2957 assert_different_registers(sub_klass, super_klass, temp_reg, |
644
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2958 super_check_offset.as_register()); |
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diff
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|
2959 } else if (must_load_sco) { |
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642
diff
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|
2960 assert(temp2_reg != noreg, "supply either a temp or a register offset"); |
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642
diff
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|
2961 } |
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diff
changeset
|
2962 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2963 Label L_fallthrough; |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2964 int label_nulls = 0; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2965 if (L_success == NULL) { L_success = &L_fallthrough; label_nulls++; } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2966 if (L_failure == NULL) { L_failure = &L_fallthrough; label_nulls++; } |
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diff
changeset
|
2967 if (L_slow_path == NULL) { L_slow_path = &L_fallthrough; label_nulls++; } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
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|
2968 assert(label_nulls <= 1 || instanceof_hack != noreg || |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
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diff
changeset
|
2969 (L_slow_path == &L_fallthrough && label_nulls <= 2 && !need_slow_path), |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2970 "at most one NULL in the batch, usually"); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
2971 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2972 // Support for the instanceof hack, which uses delay slots to |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2973 // set a destination register to zero or one. |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
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diff
changeset
|
2974 bool do_bool_sets = (instanceof_hack != noreg); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2975 #define BOOL_SET(bool_value) \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2976 if (do_bool_sets && bool_value >= 0) \ |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2977 set(bool_value, instanceof_hack) |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2978 #define DELAYED_BOOL_SET(bool_value) \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2979 if (do_bool_sets && bool_value >= 0) \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2980 delayed()->set(bool_value, instanceof_hack); \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2981 else delayed()->nop() |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2982 // Hacked ba(), which may only be used just before L_fallthrough. |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2983 #define FINAL_JUMP(label, bool_value) \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2984 if (&(label) == &L_fallthrough) { \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2985 BOOL_SET(bool_value); \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2986 } else { \ |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
2987 ba((do_bool_sets && bool_value >= 0), label); \ |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2988 DELAYED_BOOL_SET(bool_value); \ |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
2989 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
2990 |
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642
diff
changeset
|
2991 // If the pointers are equal, we are done (e.g., String[] elements). |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
2992 // This self-check enables sharing of secondary supertype arrays among |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
2993 // non-primary types such as array-of-interface. Otherwise, each such |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2994 // type would need its own customized SSA. |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
2995 // We move this check to the front of the fast path because many |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
2996 // type checks are in fact trivially successful in this manner, |
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642
diff
changeset
|
2997 // so we get a nicely predicted branch right at the start of the check. |
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642
diff
changeset
|
2998 cmp(super_klass, sub_klass); |
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642
diff
changeset
|
2999 brx(Assembler::equal, do_bool_sets, Assembler::pn, *L_success); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
3000 DELAYED_BOOL_SET(1); |
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642
diff
changeset
|
3001 |
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diff
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|
3002 // Check the supertype display: |
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642
diff
changeset
|
3003 if (must_load_sco) { |
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diff
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|
3004 // The super check offset is always positive... |
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642
diff
changeset
|
3005 lduw(super_klass, sco_offset, temp2_reg); |
665
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|
3006 super_check_offset = RegisterOrConstant(temp2_reg); |
1503 | 3007 // super_check_offset is register. |
3008 assert_different_registers(sub_klass, super_klass, temp_reg, super_check_offset.as_register()); | |
644
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642
diff
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|
3009 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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diff
changeset
|
3010 ld_ptr(sub_klass, super_check_offset, temp_reg); |
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diff
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|
3011 cmp(super_klass, temp_reg); |
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diff
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|
3012 |
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diff
changeset
|
3013 // This check has worked decisively for primary supers. |
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642
diff
changeset
|
3014 // Secondary supers are sought in the super_cache ('super_cache_addr'). |
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642
diff
changeset
|
3015 // (Secondary supers are interfaces and very deeply nested subtypes.) |
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642
diff
changeset
|
3016 // This works in the same check above because of a tricky aliasing |
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642
diff
changeset
|
3017 // between the super_cache and the primary super display elements. |
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642
diff
changeset
|
3018 // (The 'super_check_addr' can address either, as the case requires.) |
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642
diff
changeset
|
3019 // Note that the cache is updated below if it does not help us find |
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jrose
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642
diff
changeset
|
3020 // what we need immediately. |
c517646eef23
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jrose
parents:
642
diff
changeset
|
3021 // So if it was a primary super, we can just fail immediately. |
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jrose
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642
diff
changeset
|
3022 // Otherwise, it's the slow path for us (no success at this point). |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3023 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3024 if (super_check_offset.is_register()) { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3025 brx(Assembler::equal, do_bool_sets, Assembler::pn, *L_success); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3026 delayed(); if (do_bool_sets) BOOL_SET(1); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3027 // if !do_bool_sets, sneak the next cmp into the delay slot: |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3028 cmp(super_check_offset.as_register(), sc_offset); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3029 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3030 if (L_failure == &L_fallthrough) { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3031 brx(Assembler::equal, do_bool_sets, Assembler::pt, *L_slow_path); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3032 delayed()->nop(); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3033 BOOL_SET(0); // fallthrough on failure |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3034 } else { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3035 brx(Assembler::notEqual, do_bool_sets, Assembler::pn, *L_failure); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
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|
3036 DELAYED_BOOL_SET(0); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3037 FINAL_JUMP(*L_slow_path, -1); // -1 => vanilla delay slot |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3038 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3039 } else if (super_check_offset.as_constant() == sc_offset) { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3040 // Need a slow path; fast failure is impossible. |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3041 if (L_slow_path == &L_fallthrough) { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
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|
3042 brx(Assembler::equal, do_bool_sets, Assembler::pt, *L_success); |
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642
diff
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|
3043 DELAYED_BOOL_SET(1); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
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|
3044 } else { |
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642
diff
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|
3045 brx(Assembler::notEqual, false, Assembler::pn, *L_slow_path); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3046 delayed()->nop(); |
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642
diff
changeset
|
3047 FINAL_JUMP(*L_success, 1); |
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642
diff
changeset
|
3048 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3049 } else { |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3050 // No slow path; it's a fast decision. |
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642
diff
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|
3051 if (L_failure == &L_fallthrough) { |
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642
diff
changeset
|
3052 brx(Assembler::equal, do_bool_sets, Assembler::pt, *L_success); |
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642
diff
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|
3053 DELAYED_BOOL_SET(1); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3054 BOOL_SET(0); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3055 } else { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3056 brx(Assembler::notEqual, do_bool_sets, Assembler::pn, *L_failure); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3057 DELAYED_BOOL_SET(0); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3058 FINAL_JUMP(*L_success, 1); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3059 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3060 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3061 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3062 bind(L_fallthrough); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3063 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3064 #undef final_jump |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3065 #undef bool_set |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3066 #undef DELAYED_BOOL_SET |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3067 #undef final_jump |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3068 } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3069 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3070 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3071 void MacroAssembler::check_klass_subtype_slow_path(Register sub_klass, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3072 Register super_klass, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3073 Register count_temp, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3074 Register scan_temp, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3075 Register scratch_reg, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3076 Register coop_reg, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3077 Label* L_success, |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3078 Label* L_failure) { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3079 assert_different_registers(sub_klass, super_klass, |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3080 count_temp, scan_temp, scratch_reg, coop_reg); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3081 |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3082 Label L_fallthrough, L_loop; |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3083 int label_nulls = 0; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3084 if (L_success == NULL) { L_success = &L_fallthrough; label_nulls++; } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3085 if (L_failure == NULL) { L_failure = &L_fallthrough; label_nulls++; } |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3086 assert(label_nulls <= 1, "at most one NULL in the batch"); |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3087 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3088 // a couple of useful fields in sub_klass: |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3089 int ss_offset = (klassOopDesc::header_size() * HeapWordSize + |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3090 Klass::secondary_supers_offset_in_bytes()); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3091 int sc_offset = (klassOopDesc::header_size() * HeapWordSize + |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3092 Klass::secondary_super_cache_offset_in_bytes()); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3093 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3094 // Do a linear scan of the secondary super-klass chain. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3095 // This code is rarely used, so simplicity is a virtue here. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3096 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3097 #ifndef PRODUCT |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3098 int* pst_counter = &SharedRuntime::_partial_subtype_ctr; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3099 inc_counter((address) pst_counter, count_temp, scan_temp); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3100 #endif |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3101 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3102 // We will consult the secondary-super array. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3103 ld_ptr(sub_klass, ss_offset, scan_temp); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3104 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3105 // Compress superclass if necessary. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3106 Register search_key = super_klass; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3107 bool decode_super_klass = false; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3108 if (UseCompressedOops) { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3109 if (coop_reg != noreg) { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3110 encode_heap_oop_not_null(super_klass, coop_reg); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3111 search_key = coop_reg; |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3112 } else { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3113 encode_heap_oop_not_null(super_klass); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3114 decode_super_klass = true; // scarce temps! |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3115 } |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3116 // The superclass is never null; it would be a basic system error if a null |
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6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3117 // pointer were to sneak in here. Note that we have already loaded the |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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642
diff
changeset
|
3118 // Klass::super_check_offset from the super_klass in the fast path, |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3119 // so if there is a null in that register, we are already in the afterlife. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
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parents:
642
diff
changeset
|
3120 } |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3121 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3122 // Load the array length. (Positive movl does right thing on LP64.) |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3123 lduw(scan_temp, arrayOopDesc::length_offset_in_bytes(), count_temp); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3124 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3125 // Check for empty secondary super list |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3126 tst(count_temp); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3127 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3128 // Top of search loop |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3129 bind(L_loop); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3130 br(Assembler::equal, false, Assembler::pn, *L_failure); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3131 delayed()->add(scan_temp, heapOopSize, scan_temp); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3132 assert(heapOopSize != 0, "heapOopSize should be initialized"); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3133 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3134 // Skip the array header in all array accesses. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3135 int elem_offset = arrayOopDesc::base_offset_in_bytes(T_OBJECT); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3136 elem_offset -= heapOopSize; // the scan pointer was pre-incremented also |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3137 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3138 // Load next super to check |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3139 if (UseCompressedOops) { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3140 // Don't use load_heap_oop; we don't want to decode the element. |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3141 lduw( scan_temp, elem_offset, scratch_reg ); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3142 } else { |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
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642
diff
changeset
|
3143 ld_ptr( scan_temp, elem_offset, scratch_reg ); |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3144 } |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3145 |
c517646eef23
6813212: factor duplicated assembly code for general subclass check (for 6655638)
jrose
parents:
642
diff
changeset
|
3146 // Look for Rsuper_klass on Rsub_klass's secondary super-class-overflow list |
c517646eef23
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3147 cmp(scratch_reg, search_key); |
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3148 |
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3149 // A miss means we are NOT a subtype and need to keep looping |
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3150 brx(Assembler::notEqual, false, Assembler::pn, L_loop); |
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3151 delayed()->deccc(count_temp); // decrement trip counter in delay slot |
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3152 |
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3153 // Falling out the bottom means we found a hit; we ARE a subtype |
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3154 if (decode_super_klass) decode_heap_oop(super_klass); |
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3155 |
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3156 // Success. Cache the super we found and proceed in triumph. |
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3157 st_ptr(super_klass, sub_klass, sc_offset); |
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3158 |
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3159 if (L_success != &L_fallthrough) { |
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3160 ba(false, *L_success); |
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3161 delayed()->nop(); |
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3162 } |
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3163 |
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3164 bind(L_fallthrough); |
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3165 } |
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3166 |
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3167 |
710 | 3168 void MacroAssembler::check_method_handle_type(Register mtype_reg, Register mh_reg, |
3169 Register temp_reg, | |
3170 Label& wrong_method_type) { | |
3171 assert_different_registers(mtype_reg, mh_reg, temp_reg); | |
3172 // compare method type against that of the receiver | |
3173 RegisterOrConstant mhtype_offset = delayed_value(java_dyn_MethodHandle::type_offset_in_bytes, temp_reg); | |
1846 | 3174 load_heap_oop(mh_reg, mhtype_offset, temp_reg); |
710 | 3175 cmp(temp_reg, mtype_reg); |
3176 br(Assembler::notEqual, false, Assembler::pn, wrong_method_type); | |
3177 delayed()->nop(); | |
3178 } | |
3179 | |
3180 | |
1503 | 3181 // A method handle has a "vmslots" field which gives the size of its |
3182 // argument list in JVM stack slots. This field is either located directly | |
3183 // in every method handle, or else is indirectly accessed through the | |
3184 // method handle's MethodType. This macro hides the distinction. | |
3185 void MacroAssembler::load_method_handle_vmslots(Register vmslots_reg, Register mh_reg, | |
3186 Register temp_reg) { | |
3187 assert_different_registers(vmslots_reg, mh_reg, temp_reg); | |
3188 // load mh.type.form.vmslots | |
3189 if (java_dyn_MethodHandle::vmslots_offset_in_bytes() != 0) { | |
3190 // hoist vmslots into every mh to avoid dependent load chain | |
1846 | 3191 ld( Address(mh_reg, delayed_value(java_dyn_MethodHandle::vmslots_offset_in_bytes, temp_reg)), vmslots_reg); |
1503 | 3192 } else { |
3193 Register temp2_reg = vmslots_reg; | |
1846 | 3194 load_heap_oop(Address(mh_reg, delayed_value(java_dyn_MethodHandle::type_offset_in_bytes, temp_reg)), temp2_reg); |
3195 load_heap_oop(Address(temp2_reg, delayed_value(java_dyn_MethodType::form_offset_in_bytes, temp_reg)), temp2_reg); | |
3196 ld( Address(temp2_reg, delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, temp_reg)), vmslots_reg); | |
1503 | 3197 } |
3198 } | |
3199 | |
3200 | |
3201 void MacroAssembler::jump_to_method_handle_entry(Register mh_reg, Register temp_reg, bool emit_delayed_nop) { | |
710 | 3202 assert(mh_reg == G3_method_handle, "caller must put MH object in G3"); |
3203 assert_different_registers(mh_reg, temp_reg); | |
3204 | |
3205 // pick out the interpreted side of the handler | |
1846 | 3206 // NOTE: vmentry is not an oop! |
710 | 3207 ld_ptr(mh_reg, delayed_value(java_dyn_MethodHandle::vmentry_offset_in_bytes, temp_reg), temp_reg); |
3208 | |
3209 // off we go... | |
3210 ld_ptr(temp_reg, MethodHandleEntry::from_interpreted_entry_offset_in_bytes(), temp_reg); | |
3211 jmp(temp_reg, 0); | |
3212 | |
3213 // for the various stubs which take control at this point, | |
3214 // see MethodHandles::generate_method_handle_stub | |
3215 | |
1503 | 3216 // Some callers can fill the delay slot. |
3217 if (emit_delayed_nop) { | |
3218 delayed()->nop(); | |
3219 } | |
710 | 3220 } |
3221 | |
1503 | 3222 |
710 | 3223 RegisterOrConstant MacroAssembler::argument_offset(RegisterOrConstant arg_slot, |
3224 int extra_slot_offset) { | |
3225 // cf. TemplateTable::prepare_invoke(), if (load_receiver). | |
1506 | 3226 int stackElementSize = Interpreter::stackElementSize; |
1503 | 3227 int offset = extra_slot_offset * stackElementSize; |
710 | 3228 if (arg_slot.is_constant()) { |
3229 offset += arg_slot.as_constant() * stackElementSize; | |
3230 return offset; | |
3231 } else { | |
3232 Register temp = arg_slot.as_register(); | |
3233 sll_ptr(temp, exact_log2(stackElementSize), temp); | |
3234 if (offset != 0) | |
3235 add(temp, offset, temp); | |
3236 return temp; | |
3237 } | |
3238 } | |
3239 | |
3240 | |
1503 | 3241 Address MacroAssembler::argument_address(RegisterOrConstant arg_slot, |
3242 int extra_slot_offset) { | |
3243 return Address(Gargs, argument_offset(arg_slot, extra_slot_offset)); | |
3244 } | |
3245 | |
710 | 3246 |
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3247 void MacroAssembler::biased_locking_enter(Register obj_reg, Register mark_reg, |
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3248 Register temp_reg, |
0 | 3249 Label& done, Label* slow_case, |
3250 BiasedLockingCounters* counters) { | |
3251 assert(UseBiasedLocking, "why call this otherwise?"); | |
3252 | |
3253 if (PrintBiasedLockingStatistics) { | |
3254 assert_different_registers(obj_reg, mark_reg, temp_reg, O7); | |
3255 if (counters == NULL) | |
3256 counters = BiasedLocking::counters(); | |
3257 } | |
3258 | |
3259 Label cas_label; | |
3260 | |
3261 // Biased locking | |
3262 // See whether the lock is currently biased toward our thread and | |
3263 // whether the epoch is still valid | |
3264 // Note that the runtime guarantees sufficient alignment of JavaThread | |
3265 // pointers to allow age to be placed into low bits | |
3266 assert(markOopDesc::age_shift == markOopDesc::lock_bits + markOopDesc::biased_lock_bits, "biased locking makes assumptions about bit layout"); | |
3267 and3(mark_reg, markOopDesc::biased_lock_mask_in_place, temp_reg); | |
3268 cmp(temp_reg, markOopDesc::biased_lock_pattern); | |
3269 brx(Assembler::notEqual, false, Assembler::pn, cas_label); | |
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3270 delayed()->nop(); |
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3271 |
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3272 load_klass(obj_reg, temp_reg); |
727 | 3273 ld_ptr(Address(temp_reg, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes()), temp_reg); |
0 | 3274 or3(G2_thread, temp_reg, temp_reg); |
3275 xor3(mark_reg, temp_reg, temp_reg); | |
3276 andcc(temp_reg, ~((int) markOopDesc::age_mask_in_place), temp_reg); | |
3277 if (counters != NULL) { | |
3278 cond_inc(Assembler::equal, (address) counters->biased_lock_entry_count_addr(), mark_reg, temp_reg); | |
3279 // Reload mark_reg as we may need it later | |
727 | 3280 ld_ptr(Address(obj_reg, oopDesc::mark_offset_in_bytes()), mark_reg); |
0 | 3281 } |
3282 brx(Assembler::equal, true, Assembler::pt, done); | |
3283 delayed()->nop(); | |
3284 | |
3285 Label try_revoke_bias; | |
3286 Label try_rebias; | |
727 | 3287 Address mark_addr = Address(obj_reg, oopDesc::mark_offset_in_bytes()); |
0 | 3288 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); |
3289 | |
3290 // At this point we know that the header has the bias pattern and | |
3291 // that we are not the bias owner in the current epoch. We need to | |
3292 // figure out more details about the state of the header in order to | |
3293 // know what operations can be legally performed on the object's | |
3294 // header. | |
3295 | |
3296 // If the low three bits in the xor result aren't clear, that means | |
3297 // the prototype header is no longer biased and we have to revoke | |
3298 // the bias on this object. | |
3299 btst(markOopDesc::biased_lock_mask_in_place, temp_reg); | |
3300 brx(Assembler::notZero, false, Assembler::pn, try_revoke_bias); | |
3301 | |
3302 // Biasing is still enabled for this data type. See whether the | |
3303 // epoch of the current bias is still valid, meaning that the epoch | |
3304 // bits of the mark word are equal to the epoch bits of the | |
3305 // prototype header. (Note that the prototype header's epoch bits | |
3306 // only change at a safepoint.) If not, attempt to rebias the object | |
3307 // toward the current thread. Note that we must be absolutely sure | |
3308 // that the current epoch is invalid in order to do this because | |
3309 // otherwise the manipulations it performs on the mark word are | |
3310 // illegal. | |
3311 delayed()->btst(markOopDesc::epoch_mask_in_place, temp_reg); | |
3312 brx(Assembler::notZero, false, Assembler::pn, try_rebias); | |
3313 | |
3314 // The epoch of the current bias is still valid but we know nothing | |
3315 // about the owner; it might be set or it might be clear. Try to | |
3316 // acquire the bias of the object using an atomic operation. If this | |
3317 // fails we will go in to the runtime to revoke the object's bias. | |
3318 // Note that we first construct the presumed unbiased header so we | |
3319 // don't accidentally blow away another thread's valid bias. | |
3320 delayed()->and3(mark_reg, | |
3321 markOopDesc::biased_lock_mask_in_place | markOopDesc::age_mask_in_place | markOopDesc::epoch_mask_in_place, | |
3322 mark_reg); | |
3323 or3(G2_thread, mark_reg, temp_reg); | |
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3324 casn(mark_addr.base(), mark_reg, temp_reg); |
0 | 3325 // If the biasing toward our thread failed, this means that |
3326 // another thread succeeded in biasing it toward itself and we | |
3327 // need to revoke that bias. The revocation will occur in the | |
3328 // interpreter runtime in the slow case. | |
3329 cmp(mark_reg, temp_reg); | |
3330 if (counters != NULL) { | |
3331 cond_inc(Assembler::zero, (address) counters->anonymously_biased_lock_entry_count_addr(), mark_reg, temp_reg); | |
3332 } | |
3333 if (slow_case != NULL) { | |
3334 brx(Assembler::notEqual, true, Assembler::pn, *slow_case); | |
3335 delayed()->nop(); | |
3336 } | |
3337 br(Assembler::always, false, Assembler::pt, done); | |
3338 delayed()->nop(); | |
3339 | |
3340 bind(try_rebias); | |
3341 // At this point we know the epoch has expired, meaning that the | |
3342 // current "bias owner", if any, is actually invalid. Under these | |
3343 // circumstances _only_, we are allowed to use the current header's | |
3344 // value as the comparison value when doing the cas to acquire the | |
3345 // bias in the current epoch. In other words, we allow transfer of | |
3346 // the bias from one thread to another directly in this situation. | |
3347 // | |
3348 // FIXME: due to a lack of registers we currently blow away the age | |
3349 // bits in this situation. Should attempt to preserve them. | |
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3350 load_klass(obj_reg, temp_reg); |
727 | 3351 ld_ptr(Address(temp_reg, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes()), temp_reg); |
0 | 3352 or3(G2_thread, temp_reg, temp_reg); |
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3353 casn(mark_addr.base(), mark_reg, temp_reg); |
0 | 3354 // If the biasing toward our thread failed, this means that |
3355 // another thread succeeded in biasing it toward itself and we | |
3356 // need to revoke that bias. The revocation will occur in the | |
3357 // interpreter runtime in the slow case. | |
3358 cmp(mark_reg, temp_reg); | |
3359 if (counters != NULL) { | |
3360 cond_inc(Assembler::zero, (address) counters->rebiased_lock_entry_count_addr(), mark_reg, temp_reg); | |
3361 } | |
3362 if (slow_case != NULL) { | |
3363 brx(Assembler::notEqual, true, Assembler::pn, *slow_case); | |
3364 delayed()->nop(); | |
3365 } | |
3366 br(Assembler::always, false, Assembler::pt, done); | |
3367 delayed()->nop(); | |
3368 | |
3369 bind(try_revoke_bias); | |
3370 // The prototype mark in the klass doesn't have the bias bit set any | |
3371 // more, indicating that objects of this data type are not supposed | |
3372 // to be biased any more. We are going to try to reset the mark of | |
3373 // this object to the prototype value and fall through to the | |
3374 // CAS-based locking scheme. Note that if our CAS fails, it means | |
3375 // that another thread raced us for the privilege of revoking the | |
3376 // bias of this particular object, so it's okay to continue in the | |
3377 // normal locking code. | |
3378 // | |
3379 // FIXME: due to a lack of registers we currently blow away the age | |
3380 // bits in this situation. Should attempt to preserve them. | |
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3381 load_klass(obj_reg, temp_reg); |
727 | 3382 ld_ptr(Address(temp_reg, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes()), temp_reg); |
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3383 casn(mark_addr.base(), mark_reg, temp_reg); |
0 | 3384 // Fall through to the normal CAS-based lock, because no matter what |
3385 // the result of the above CAS, some thread must have succeeded in | |
3386 // removing the bias bit from the object's header. | |
3387 if (counters != NULL) { | |
3388 cmp(mark_reg, temp_reg); | |
3389 cond_inc(Assembler::zero, (address) counters->revoked_lock_entry_count_addr(), mark_reg, temp_reg); | |
3390 } | |
3391 | |
3392 bind(cas_label); | |
3393 } | |
3394 | |
3395 void MacroAssembler::biased_locking_exit (Address mark_addr, Register temp_reg, Label& done, | |
3396 bool allow_delay_slot_filling) { | |
3397 // Check for biased locking unlock case, which is a no-op | |
3398 // Note: we do not have to check the thread ID for two reasons. | |
3399 // First, the interpreter checks for IllegalMonitorStateException at | |
3400 // a higher level. Second, if the bias was revoked while we held the | |
3401 // lock, the object could not be rebiased toward another thread, so | |
3402 // the bias bit would be clear. | |
3403 ld_ptr(mark_addr, temp_reg); | |
3404 and3(temp_reg, markOopDesc::biased_lock_mask_in_place, temp_reg); | |
3405 cmp(temp_reg, markOopDesc::biased_lock_pattern); | |
3406 brx(Assembler::equal, allow_delay_slot_filling, Assembler::pt, done); | |
3407 delayed(); | |
3408 if (!allow_delay_slot_filling) { | |
3409 nop(); | |
3410 } | |
3411 } | |
3412 | |
3413 | |
3414 // CASN -- 32-64 bit switch hitter similar to the synthetic CASN provided by | |
3415 // Solaris/SPARC's "as". Another apt name would be cas_ptr() | |
3416 | |
3417 void MacroAssembler::casn (Register addr_reg, Register cmp_reg, Register set_reg ) { | |
3418 casx_under_lock (addr_reg, cmp_reg, set_reg, (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()) ; | |
3419 } | |
3420 | |
3421 | |
3422 | |
3423 // compiler_lock_object() and compiler_unlock_object() are direct transliterations | |
3424 // of i486.ad fast_lock() and fast_unlock(). See those methods for detailed comments. | |
3425 // The code could be tightened up considerably. | |
3426 // | |
3427 // box->dhw disposition - post-conditions at DONE_LABEL. | |
3428 // - Successful inflated lock: box->dhw != 0. | |
3429 // Any non-zero value suffices. | |
3430 // Consider G2_thread, rsp, boxReg, or unused_mark() | |
3431 // - Successful Stack-lock: box->dhw == mark. | |
3432 // box->dhw must contain the displaced mark word value | |
3433 // - Failure -- icc.ZFlag == 0 and box->dhw is undefined. | |
3434 // The slow-path fast_enter() and slow_enter() operators | |
3435 // are responsible for setting box->dhw = NonZero (typically ::unused_mark). | |
3436 // - Biased: box->dhw is undefined | |
3437 // | |
3438 // SPARC refworkload performance - specifically jetstream and scimark - are | |
3439 // extremely sensitive to the size of the code emitted by compiler_lock_object | |
3440 // and compiler_unlock_object. Critically, the key factor is code size, not path | |
3441 // length. (Simply experiments to pad CLO with unexecuted NOPs demonstrte the | |
3442 // effect). | |
3443 | |
3444 | |
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3445 void MacroAssembler::compiler_lock_object(Register Roop, Register Rmark, |
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3446 Register Rbox, Register Rscratch, |
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3447 BiasedLockingCounters* counters, |
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3448 bool try_bias) { |
727 | 3449 Address mark_addr(Roop, oopDesc::mark_offset_in_bytes()); |
0 | 3450 |
3451 verify_oop(Roop); | |
3452 Label done ; | |
3453 | |
3454 if (counters != NULL) { | |
3455 inc_counter((address) counters->total_entry_count_addr(), Rmark, Rscratch); | |
3456 } | |
3457 | |
3458 if (EmitSync & 1) { | |
3459 mov (3, Rscratch) ; | |
3460 st_ptr (Rscratch, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3461 cmp (SP, G0) ; | |
3462 return ; | |
3463 } | |
3464 | |
3465 if (EmitSync & 2) { | |
3466 | |
3467 // Fetch object's markword | |
3468 ld_ptr(mark_addr, Rmark); | |
3469 | |
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3470 if (try_bias) { |
0 | 3471 biased_locking_enter(Roop, Rmark, Rscratch, done, NULL, counters); |
3472 } | |
3473 | |
3474 // Save Rbox in Rscratch to be used for the cas operation | |
3475 mov(Rbox, Rscratch); | |
3476 | |
3477 // set Rmark to markOop | markOopDesc::unlocked_value | |
3478 or3(Rmark, markOopDesc::unlocked_value, Rmark); | |
3479 | |
3480 // Initialize the box. (Must happen before we update the object mark!) | |
3481 st_ptr(Rmark, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3482 | |
3483 // compare object markOop with Rmark and if equal exchange Rscratch with object markOop | |
3484 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
3485 casx_under_lock(mark_addr.base(), Rmark, Rscratch, | |
3486 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
3487 | |
3488 // if compare/exchange succeeded we found an unlocked object and we now have locked it | |
3489 // hence we are done | |
3490 cmp(Rmark, Rscratch); | |
3491 #ifdef _LP64 | |
3492 sub(Rscratch, STACK_BIAS, Rscratch); | |
3493 #endif | |
3494 brx(Assembler::equal, false, Assembler::pt, done); | |
3495 delayed()->sub(Rscratch, SP, Rscratch); //pull next instruction into delay slot | |
3496 | |
3497 // we did not find an unlocked object so see if this is a recursive case | |
3498 // sub(Rscratch, SP, Rscratch); | |
3499 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
3500 andcc(Rscratch, 0xfffff003, Rscratch); | |
3501 st_ptr(Rscratch, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3502 bind (done) ; | |
3503 return ; | |
3504 } | |
3505 | |
3506 Label Egress ; | |
3507 | |
3508 if (EmitSync & 256) { | |
3509 Label IsInflated ; | |
3510 | |
3511 ld_ptr (mark_addr, Rmark); // fetch obj->mark | |
3512 // Triage: biased, stack-locked, neutral, inflated | |
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3513 if (try_bias) { |
0 | 3514 biased_locking_enter(Roop, Rmark, Rscratch, done, NULL, counters); |
3515 // Invariant: if control reaches this point in the emitted stream | |
3516 // then Rmark has not been modified. | |
3517 } | |
3518 | |
3519 // Store mark into displaced mark field in the on-stack basic-lock "box" | |
3520 // Critically, this must happen before the CAS | |
3521 // Maximize the ST-CAS distance to minimize the ST-before-CAS penalty. | |
3522 st_ptr (Rmark, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3523 andcc (Rmark, 2, G0) ; | |
3524 brx (Assembler::notZero, false, Assembler::pn, IsInflated) ; | |
3525 delayed() -> | |
3526 | |
3527 // Try stack-lock acquisition. | |
3528 // Beware: the 1st instruction is in a delay slot | |
3529 mov (Rbox, Rscratch); | |
3530 or3 (Rmark, markOopDesc::unlocked_value, Rmark); | |
3531 assert (mark_addr.disp() == 0, "cas must take a zero displacement"); | |
3532 casn (mark_addr.base(), Rmark, Rscratch) ; | |
3533 cmp (Rmark, Rscratch); | |
3534 brx (Assembler::equal, false, Assembler::pt, done); | |
3535 delayed()->sub(Rscratch, SP, Rscratch); | |
3536 | |
3537 // Stack-lock attempt failed - check for recursive stack-lock. | |
3538 // See the comments below about how we might remove this case. | |
3539 #ifdef _LP64 | |
3540 sub (Rscratch, STACK_BIAS, Rscratch); | |
3541 #endif | |
3542 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
3543 andcc (Rscratch, 0xfffff003, Rscratch); | |
3544 br (Assembler::always, false, Assembler::pt, done) ; | |
3545 delayed()-> st_ptr (Rscratch, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3546 | |
3547 bind (IsInflated) ; | |
3548 if (EmitSync & 64) { | |
3549 // If m->owner != null goto IsLocked | |
3550 // Pessimistic form: Test-and-CAS vs CAS | |
3551 // The optimistic form avoids RTS->RTO cache line upgrades. | |
727 | 3552 ld_ptr (Rmark, ObjectMonitor::owner_offset_in_bytes() - 2, Rscratch); |
0 | 3553 andcc (Rscratch, Rscratch, G0) ; |
3554 brx (Assembler::notZero, false, Assembler::pn, done) ; | |
3555 delayed()->nop() ; | |
3556 // m->owner == null : it's unlocked. | |
3557 } | |
3558 | |
3559 // Try to CAS m->owner from null to Self | |
3560 // Invariant: if we acquire the lock then _recursions should be 0. | |
3561 add (Rmark, ObjectMonitor::owner_offset_in_bytes()-2, Rmark) ; | |
3562 mov (G2_thread, Rscratch) ; | |
3563 casn (Rmark, G0, Rscratch) ; | |
3564 cmp (Rscratch, G0) ; | |
3565 // Intentional fall-through into done | |
3566 } else { | |
3567 // Aggressively avoid the Store-before-CAS penalty | |
3568 // Defer the store into box->dhw until after the CAS | |
3569 Label IsInflated, Recursive ; | |
3570 | |
3571 // Anticipate CAS -- Avoid RTS->RTO upgrade | |
3572 // prefetch (mark_addr, Assembler::severalWritesAndPossiblyReads) ; | |
3573 | |
3574 ld_ptr (mark_addr, Rmark); // fetch obj->mark | |
3575 // Triage: biased, stack-locked, neutral, inflated | |
3576 | |
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3577 if (try_bias) { |
0 | 3578 biased_locking_enter(Roop, Rmark, Rscratch, done, NULL, counters); |
3579 // Invariant: if control reaches this point in the emitted stream | |
3580 // then Rmark has not been modified. | |
3581 } | |
3582 andcc (Rmark, 2, G0) ; | |
3583 brx (Assembler::notZero, false, Assembler::pn, IsInflated) ; | |
3584 delayed()-> // Beware - dangling delay-slot | |
3585 | |
3586 // Try stack-lock acquisition. | |
3587 // Transiently install BUSY (0) encoding in the mark word. | |
3588 // if the CAS of 0 into the mark was successful then we execute: | |
3589 // ST box->dhw = mark -- save fetched mark in on-stack basiclock box | |
3590 // ST obj->mark = box -- overwrite transient 0 value | |
3591 // This presumes TSO, of course. | |
3592 | |
3593 mov (0, Rscratch) ; | |
3594 or3 (Rmark, markOopDesc::unlocked_value, Rmark); | |
3595 assert (mark_addr.disp() == 0, "cas must take a zero displacement"); | |
3596 casn (mark_addr.base(), Rmark, Rscratch) ; | |
3597 // prefetch (mark_addr, Assembler::severalWritesAndPossiblyReads) ; | |
3598 cmp (Rscratch, Rmark) ; | |
3599 brx (Assembler::notZero, false, Assembler::pn, Recursive) ; | |
3600 delayed() -> | |
3601 st_ptr (Rmark, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3602 if (counters != NULL) { | |
3603 cond_inc(Assembler::equal, (address) counters->fast_path_entry_count_addr(), Rmark, Rscratch); | |
3604 } | |
3605 br (Assembler::always, false, Assembler::pt, done); | |
3606 delayed() -> | |
3607 st_ptr (Rbox, mark_addr) ; | |
3608 | |
3609 bind (Recursive) ; | |
3610 // Stack-lock attempt failed - check for recursive stack-lock. | |
3611 // Tests show that we can remove the recursive case with no impact | |
3612 // on refworkload 0.83. If we need to reduce the size of the code | |
3613 // emitted by compiler_lock_object() the recursive case is perfect | |
3614 // candidate. | |
3615 // | |
3616 // A more extreme idea is to always inflate on stack-lock recursion. | |
3617 // This lets us eliminate the recursive checks in compiler_lock_object | |
3618 // and compiler_unlock_object and the (box->dhw == 0) encoding. | |
3619 // A brief experiment - requiring changes to synchronizer.cpp, interpreter, | |
3620 // and showed a performance *increase*. In the same experiment I eliminated | |
3621 // the fast-path stack-lock code from the interpreter and always passed | |
3622 // control to the "slow" operators in synchronizer.cpp. | |
3623 | |
3624 // RScratch contains the fetched obj->mark value from the failed CASN. | |
3625 #ifdef _LP64 | |
3626 sub (Rscratch, STACK_BIAS, Rscratch); | |
3627 #endif | |
3628 sub(Rscratch, SP, Rscratch); | |
3629 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
3630 andcc (Rscratch, 0xfffff003, Rscratch); | |
3631 if (counters != NULL) { | |
3632 // Accounting needs the Rscratch register | |
3633 st_ptr (Rscratch, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3634 cond_inc(Assembler::equal, (address) counters->fast_path_entry_count_addr(), Rmark, Rscratch); | |
3635 br (Assembler::always, false, Assembler::pt, done) ; | |
3636 delayed()->nop() ; | |
3637 } else { | |
3638 br (Assembler::always, false, Assembler::pt, done) ; | |
3639 delayed()-> st_ptr (Rscratch, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3640 } | |
3641 | |
3642 bind (IsInflated) ; | |
3643 if (EmitSync & 64) { | |
3644 // If m->owner != null goto IsLocked | |
3645 // Test-and-CAS vs CAS | |
3646 // Pessimistic form avoids futile (doomed) CAS attempts | |
3647 // The optimistic form avoids RTS->RTO cache line upgrades. | |
727 | 3648 ld_ptr (Rmark, ObjectMonitor::owner_offset_in_bytes() - 2, Rscratch); |
0 | 3649 andcc (Rscratch, Rscratch, G0) ; |
3650 brx (Assembler::notZero, false, Assembler::pn, done) ; | |
3651 delayed()->nop() ; | |
3652 // m->owner == null : it's unlocked. | |
3653 } | |
3654 | |
3655 // Try to CAS m->owner from null to Self | |
3656 // Invariant: if we acquire the lock then _recursions should be 0. | |
3657 add (Rmark, ObjectMonitor::owner_offset_in_bytes()-2, Rmark) ; | |
3658 mov (G2_thread, Rscratch) ; | |
3659 casn (Rmark, G0, Rscratch) ; | |
3660 cmp (Rscratch, G0) ; | |
3661 // ST box->displaced_header = NonZero. | |
3662 // Any non-zero value suffices: | |
3663 // unused_mark(), G2_thread, RBox, RScratch, rsp, etc. | |
3664 st_ptr (Rbox, Rbox, BasicLock::displaced_header_offset_in_bytes()); | |
3665 // Intentional fall-through into done | |
3666 } | |
3667 | |
3668 bind (done) ; | |
3669 } | |
3670 | |
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3671 void MacroAssembler::compiler_unlock_object(Register Roop, Register Rmark, |
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3672 Register Rbox, Register Rscratch, |
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3673 bool try_bias) { |
727 | 3674 Address mark_addr(Roop, oopDesc::mark_offset_in_bytes()); |
0 | 3675 |
3676 Label done ; | |
3677 | |
3678 if (EmitSync & 4) { | |
3679 cmp (SP, G0) ; | |
3680 return ; | |
3681 } | |
3682 | |
3683 if (EmitSync & 8) { | |
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3684 if (try_bias) { |
0 | 3685 biased_locking_exit(mark_addr, Rscratch, done); |
3686 } | |
3687 | |
3688 // Test first if it is a fast recursive unlock | |
3689 ld_ptr(Rbox, BasicLock::displaced_header_offset_in_bytes(), Rmark); | |
3690 cmp(Rmark, G0); | |
3691 brx(Assembler::equal, false, Assembler::pt, done); | |
3692 delayed()->nop(); | |
3693 | |
3694 // Check if it is still a light weight lock, this is is true if we see | |
3695 // the stack address of the basicLock in the markOop of the object | |
3696 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
3697 casx_under_lock(mark_addr.base(), Rbox, Rmark, | |
3698 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
3699 br (Assembler::always, false, Assembler::pt, done); | |
3700 delayed()->cmp(Rbox, Rmark); | |
3701 bind (done) ; | |
3702 return ; | |
3703 } | |
3704 | |
3705 // Beware ... If the aggregate size of the code emitted by CLO and CUO is | |
3706 // is too large performance rolls abruptly off a cliff. | |
3707 // This could be related to inlining policies, code cache management, or | |
3708 // I$ effects. | |
3709 Label LStacked ; | |
3710 | |
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3711 if (try_bias) { |
0 | 3712 // TODO: eliminate redundant LDs of obj->mark |
3713 biased_locking_exit(mark_addr, Rscratch, done); | |
3714 } | |
3715 | |
3716 ld_ptr (Roop, oopDesc::mark_offset_in_bytes(), Rmark) ; | |
3717 ld_ptr (Rbox, BasicLock::displaced_header_offset_in_bytes(), Rscratch); | |
3718 andcc (Rscratch, Rscratch, G0); | |
3719 brx (Assembler::zero, false, Assembler::pn, done); | |
3720 delayed()-> nop() ; // consider: relocate fetch of mark, above, into this DS | |
3721 andcc (Rmark, 2, G0) ; | |
3722 brx (Assembler::zero, false, Assembler::pt, LStacked) ; | |
3723 delayed()-> nop() ; | |
3724 | |
3725 // It's inflated | |
3726 // Conceptually we need a #loadstore|#storestore "release" MEMBAR before | |
3727 // the ST of 0 into _owner which releases the lock. This prevents loads | |
3728 // and stores within the critical section from reordering (floating) | |
3729 // past the store that releases the lock. But TSO is a strong memory model | |
3730 // and that particular flavor of barrier is a noop, so we can safely elide it. | |
3731 // Note that we use 1-0 locking by default for the inflated case. We | |
3732 // close the resultant (and rare) race by having contented threads in | |
3733 // monitorenter periodically poll _owner. | |
727 | 3734 ld_ptr (Rmark, ObjectMonitor::owner_offset_in_bytes() - 2, Rscratch); |
3735 ld_ptr (Rmark, ObjectMonitor::recursions_offset_in_bytes() - 2, Rbox); | |
0 | 3736 xor3 (Rscratch, G2_thread, Rscratch) ; |
3737 orcc (Rbox, Rscratch, Rbox) ; | |
3738 brx (Assembler::notZero, false, Assembler::pn, done) ; | |
3739 delayed()-> | |
727 | 3740 ld_ptr (Rmark, ObjectMonitor::EntryList_offset_in_bytes() - 2, Rscratch); |
3741 ld_ptr (Rmark, ObjectMonitor::cxq_offset_in_bytes() - 2, Rbox); | |
0 | 3742 orcc (Rbox, Rscratch, G0) ; |
3743 if (EmitSync & 65536) { | |
3744 Label LSucc ; | |
3745 brx (Assembler::notZero, false, Assembler::pn, LSucc) ; | |
3746 delayed()->nop() ; | |
3747 br (Assembler::always, false, Assembler::pt, done) ; | |
3748 delayed()-> | |
727 | 3749 st_ptr (G0, Rmark, ObjectMonitor::owner_offset_in_bytes() - 2); |
0 | 3750 |
3751 bind (LSucc) ; | |
727 | 3752 st_ptr (G0, Rmark, ObjectMonitor::owner_offset_in_bytes() - 2); |
0 | 3753 if (os::is_MP()) { membar (StoreLoad) ; } |
727 | 3754 ld_ptr (Rmark, ObjectMonitor::succ_offset_in_bytes() - 2, Rscratch); |
0 | 3755 andcc (Rscratch, Rscratch, G0) ; |
3756 brx (Assembler::notZero, false, Assembler::pt, done) ; | |
3757 delayed()-> andcc (G0, G0, G0) ; | |
3758 add (Rmark, ObjectMonitor::owner_offset_in_bytes()-2, Rmark) ; | |
3759 mov (G2_thread, Rscratch) ; | |
3760 casn (Rmark, G0, Rscratch) ; | |
3761 cmp (Rscratch, G0) ; | |
3762 // invert icc.zf and goto done | |
3763 brx (Assembler::notZero, false, Assembler::pt, done) ; | |
3764 delayed() -> cmp (G0, G0) ; | |
3765 br (Assembler::always, false, Assembler::pt, done); | |
3766 delayed() -> cmp (G0, 1) ; | |
3767 } else { | |
3768 brx (Assembler::notZero, false, Assembler::pn, done) ; | |
3769 delayed()->nop() ; | |
3770 br (Assembler::always, false, Assembler::pt, done) ; | |
3771 delayed()-> | |
727 | 3772 st_ptr (G0, Rmark, ObjectMonitor::owner_offset_in_bytes() - 2); |
0 | 3773 } |
3774 | |
3775 bind (LStacked) ; | |
3776 // Consider: we could replace the expensive CAS in the exit | |
3777 // path with a simple ST of the displaced mark value fetched from | |
3778 // the on-stack basiclock box. That admits a race where a thread T2 | |
3779 // in the slow lock path -- inflating with monitor M -- could race a | |
3780 // thread T1 in the fast unlock path, resulting in a missed wakeup for T2. | |
3781 // More precisely T1 in the stack-lock unlock path could "stomp" the | |
3782 // inflated mark value M installed by T2, resulting in an orphan | |
3783 // object monitor M and T2 becoming stranded. We can remedy that situation | |
3784 // by having T2 periodically poll the object's mark word using timed wait | |
3785 // operations. If T2 discovers that a stomp has occurred it vacates | |
3786 // the monitor M and wakes any other threads stranded on the now-orphan M. | |
3787 // In addition the monitor scavenger, which performs deflation, | |
3788 // would also need to check for orpan monitors and stranded threads. | |
3789 // | |
3790 // Finally, inflation is also used when T2 needs to assign a hashCode | |
3791 // to O and O is stack-locked by T1. The "stomp" race could cause | |
3792 // an assigned hashCode value to be lost. We can avoid that condition | |
3793 // and provide the necessary hashCode stability invariants by ensuring | |
3794 // that hashCode generation is idempotent between copying GCs. | |
3795 // For example we could compute the hashCode of an object O as | |
3796 // O's heap address XOR some high quality RNG value that is refreshed | |
3797 // at GC-time. The monitor scavenger would install the hashCode | |
3798 // found in any orphan monitors. Again, the mechanism admits a | |
3799 // lost-update "stomp" WAW race but detects and recovers as needed. | |
3800 // | |
3801 // A prototype implementation showed excellent results, although | |
3802 // the scavenger and timeout code was rather involved. | |
3803 | |
3804 casn (mark_addr.base(), Rbox, Rscratch) ; | |
3805 cmp (Rbox, Rscratch); | |
3806 // Intentional fall through into done ... | |
3807 | |
3808 bind (done) ; | |
3809 } | |
3810 | |
3811 | |
3812 | |
3813 void MacroAssembler::print_CPU_state() { | |
3814 // %%%%% need to implement this | |
3815 } | |
3816 | |
3817 void MacroAssembler::verify_FPU(int stack_depth, const char* s) { | |
3818 // %%%%% need to implement this | |
3819 } | |
3820 | |
3821 void MacroAssembler::push_IU_state() { | |
3822 // %%%%% need to implement this | |
3823 } | |
3824 | |
3825 | |
3826 void MacroAssembler::pop_IU_state() { | |
3827 // %%%%% need to implement this | |
3828 } | |
3829 | |
3830 | |
3831 void MacroAssembler::push_FPU_state() { | |
3832 // %%%%% need to implement this | |
3833 } | |
3834 | |
3835 | |
3836 void MacroAssembler::pop_FPU_state() { | |
3837 // %%%%% need to implement this | |
3838 } | |
3839 | |
3840 | |
3841 void MacroAssembler::push_CPU_state() { | |
3842 // %%%%% need to implement this | |
3843 } | |
3844 | |
3845 | |
3846 void MacroAssembler::pop_CPU_state() { | |
3847 // %%%%% need to implement this | |
3848 } | |
3849 | |
3850 | |
3851 | |
3852 void MacroAssembler::verify_tlab() { | |
3853 #ifdef ASSERT | |
3854 if (UseTLAB && VerifyOops) { | |
3855 Label next, next2, ok; | |
3856 Register t1 = L0; | |
3857 Register t2 = L1; | |
3858 Register t3 = L2; | |
3859 | |
3860 save_frame(0); | |
3861 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), t1); | |
3862 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_start_offset()), t2); | |
3863 or3(t1, t2, t3); | |
3864 cmp(t1, t2); | |
3865 br(Assembler::greaterEqual, false, Assembler::pn, next); | |
3866 delayed()->nop(); | |
3867 stop("assert(top >= start)"); | |
3868 should_not_reach_here(); | |
3869 | |
3870 bind(next); | |
3871 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), t1); | |
3872 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), t2); | |
3873 or3(t3, t2, t3); | |
3874 cmp(t1, t2); | |
3875 br(Assembler::lessEqual, false, Assembler::pn, next2); | |
3876 delayed()->nop(); | |
3877 stop("assert(top <= end)"); | |
3878 should_not_reach_here(); | |
3879 | |
3880 bind(next2); | |
3881 and3(t3, MinObjAlignmentInBytesMask, t3); | |
3882 cmp(t3, 0); | |
3883 br(Assembler::lessEqual, false, Assembler::pn, ok); | |
3884 delayed()->nop(); | |
3885 stop("assert(aligned)"); | |
3886 should_not_reach_here(); | |
3887 | |
3888 bind(ok); | |
3889 restore(); | |
3890 } | |
3891 #endif | |
3892 } | |
3893 | |
3894 | |
3895 void MacroAssembler::eden_allocate( | |
3896 Register obj, // result: pointer to object after successful allocation | |
3897 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
3898 int con_size_in_bytes, // object size in bytes if known at compile time | |
3899 Register t1, // temp register | |
3900 Register t2, // temp register | |
3901 Label& slow_case // continuation point if fast allocation fails | |
3902 ){ | |
3903 // make sure arguments make sense | |
3904 assert_different_registers(obj, var_size_in_bytes, t1, t2); | |
3905 assert(0 <= con_size_in_bytes && Assembler::is_simm13(con_size_in_bytes), "illegal object size"); | |
3906 assert((con_size_in_bytes & MinObjAlignmentInBytesMask) == 0, "object size is not multiple of alignment"); | |
3907 | |
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3908 if (CMSIncrementalMode || !Universe::heap()->supports_inline_contig_alloc()) { |
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3909 // No allocation in the shared eden. |
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3910 br(Assembler::always, false, Assembler::pt, slow_case); |
0 | 3911 delayed()->nop(); |
342
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3912 } else { |
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3913 // get eden boundaries |
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3914 // note: we need both top & top_addr! |
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3915 const Register top_addr = t1; |
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3916 const Register end = t2; |
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3917 |
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3918 CollectedHeap* ch = Universe::heap(); |
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3919 set((intx)ch->top_addr(), top_addr); |
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3920 intx delta = (intx)ch->end_addr() - (intx)ch->top_addr(); |
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3921 ld_ptr(top_addr, delta, end); |
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3922 ld_ptr(top_addr, 0, obj); |
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3923 |
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3924 // try to allocate |
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3925 Label retry; |
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3926 bind(retry); |
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3927 #ifdef ASSERT |
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3928 // make sure eden top is properly aligned |
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3929 { |
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3930 Label L; |
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3931 btst(MinObjAlignmentInBytesMask, obj); |
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3932 br(Assembler::zero, false, Assembler::pt, L); |
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3933 delayed()->nop(); |
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3934 stop("eden top is not properly aligned"); |
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3935 bind(L); |
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3936 } |
0 | 3937 #endif // ASSERT |
342
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3938 const Register free = end; |
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3939 sub(end, obj, free); // compute amount of free space |
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3940 if (var_size_in_bytes->is_valid()) { |
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3941 // size is unknown at compile time |
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3942 cmp(free, var_size_in_bytes); |
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3943 br(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case |
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3944 delayed()->add(obj, var_size_in_bytes, end); |
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3945 } else { |
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3946 // size is known at compile time |
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3947 cmp(free, con_size_in_bytes); |
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3948 br(Assembler::lessUnsigned, false, Assembler::pn, slow_case); // if there is not enough space go the slow case |
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3949 delayed()->add(obj, con_size_in_bytes, end); |
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3950 } |
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3951 // Compare obj with the value at top_addr; if still equal, swap the value of |
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3952 // end with the value at top_addr. If not equal, read the value at top_addr |
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3953 // into end. |
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3954 casx_under_lock(top_addr, obj, end, (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); |
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3955 // if someone beat us on the allocation, try again, otherwise continue |
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3956 cmp(obj, end); |
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3957 brx(Assembler::notEqual, false, Assembler::pn, retry); |
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3958 delayed()->mov(end, obj); // nop if successfull since obj == end |
0 | 3959 |
3960 #ifdef ASSERT | |
342
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3961 // make sure eden top is properly aligned |
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3962 { |
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3963 Label L; |
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3964 const Register top_addr = t1; |
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3965 |
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3966 set((intx)ch->top_addr(), top_addr); |
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3967 ld_ptr(top_addr, 0, top_addr); |
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3968 btst(MinObjAlignmentInBytesMask, top_addr); |
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3969 br(Assembler::zero, false, Assembler::pt, L); |
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3970 delayed()->nop(); |
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3971 stop("eden top is not properly aligned"); |
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3972 bind(L); |
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3973 } |
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3974 #endif // ASSERT |
0 | 3975 } |
3976 } | |
3977 | |
3978 | |
3979 void MacroAssembler::tlab_allocate( | |
3980 Register obj, // result: pointer to object after successful allocation | |
3981 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
3982 int con_size_in_bytes, // object size in bytes if known at compile time | |
3983 Register t1, // temp register | |
3984 Label& slow_case // continuation point if fast allocation fails | |
3985 ){ | |
3986 // make sure arguments make sense | |
3987 assert_different_registers(obj, var_size_in_bytes, t1); | |
3988 assert(0 <= con_size_in_bytes && is_simm13(con_size_in_bytes), "illegal object size"); | |
3989 assert((con_size_in_bytes & MinObjAlignmentInBytesMask) == 0, "object size is not multiple of alignment"); | |
3990 | |
3991 const Register free = t1; | |
3992 | |
3993 verify_tlab(); | |
3994 | |
3995 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), obj); | |
3996 | |
3997 // calculate amount of free space | |
3998 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), free); | |
3999 sub(free, obj, free); | |
4000 | |
4001 Label done; | |
4002 if (var_size_in_bytes == noreg) { | |
4003 cmp(free, con_size_in_bytes); | |
4004 } else { | |
4005 cmp(free, var_size_in_bytes); | |
4006 } | |
4007 br(Assembler::less, false, Assembler::pn, slow_case); | |
4008 // calculate the new top pointer | |
4009 if (var_size_in_bytes == noreg) { | |
4010 delayed()->add(obj, con_size_in_bytes, free); | |
4011 } else { | |
4012 delayed()->add(obj, var_size_in_bytes, free); | |
4013 } | |
4014 | |
4015 bind(done); | |
4016 | |
4017 #ifdef ASSERT | |
4018 // make sure new free pointer is properly aligned | |
4019 { | |
4020 Label L; | |
4021 btst(MinObjAlignmentInBytesMask, free); | |
4022 br(Assembler::zero, false, Assembler::pt, L); | |
4023 delayed()->nop(); | |
4024 stop("updated TLAB free is not properly aligned"); | |
4025 bind(L); | |
4026 } | |
4027 #endif // ASSERT | |
4028 | |
4029 // update the tlab top pointer | |
4030 st_ptr(free, G2_thread, in_bytes(JavaThread::tlab_top_offset())); | |
4031 verify_tlab(); | |
4032 } | |
4033 | |
4034 | |
4035 void MacroAssembler::tlab_refill(Label& retry, Label& try_eden, Label& slow_case) { | |
4036 Register top = O0; | |
4037 Register t1 = G1; | |
4038 Register t2 = G3; | |
4039 Register t3 = O1; | |
4040 assert_different_registers(top, t1, t2, t3, G4, G5 /* preserve G4 and G5 */); | |
4041 Label do_refill, discard_tlab; | |
4042 | |
4043 if (CMSIncrementalMode || !Universe::heap()->supports_inline_contig_alloc()) { | |
4044 // No allocation in the shared eden. | |
4045 br(Assembler::always, false, Assembler::pt, slow_case); | |
4046 delayed()->nop(); | |
4047 } | |
4048 | |
4049 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_top_offset()), top); | |
4050 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_end_offset()), t1); | |
4051 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()), t2); | |
4052 | |
4053 // calculate amount of free space | |
4054 sub(t1, top, t1); | |
4055 srl_ptr(t1, LogHeapWordSize, t1); | |
4056 | |
4057 // Retain tlab and allocate object in shared space if | |
4058 // the amount free in the tlab is too large to discard. | |
4059 cmp(t1, t2); | |
4060 brx(Assembler::lessEqual, false, Assembler::pt, discard_tlab); | |
4061 | |
4062 // increment waste limit to prevent getting stuck on this slow path | |
4063 delayed()->add(t2, ThreadLocalAllocBuffer::refill_waste_limit_increment(), t2); | |
4064 st_ptr(t2, G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset())); | |
4065 if (TLABStats) { | |
4066 // increment number of slow_allocations | |
4067 ld(G2_thread, in_bytes(JavaThread::tlab_slow_allocations_offset()), t2); | |
4068 add(t2, 1, t2); | |
4069 stw(t2, G2_thread, in_bytes(JavaThread::tlab_slow_allocations_offset())); | |
4070 } | |
4071 br(Assembler::always, false, Assembler::pt, try_eden); | |
4072 delayed()->nop(); | |
4073 | |
4074 bind(discard_tlab); | |
4075 if (TLABStats) { | |
4076 // increment number of refills | |
4077 ld(G2_thread, in_bytes(JavaThread::tlab_number_of_refills_offset()), t2); | |
4078 add(t2, 1, t2); | |
4079 stw(t2, G2_thread, in_bytes(JavaThread::tlab_number_of_refills_offset())); | |
4080 // accumulate wastage | |
4081 ld(G2_thread, in_bytes(JavaThread::tlab_fast_refill_waste_offset()), t2); | |
4082 add(t2, t1, t2); | |
4083 stw(t2, G2_thread, in_bytes(JavaThread::tlab_fast_refill_waste_offset())); | |
4084 } | |
4085 | |
4086 // if tlab is currently allocated (top or end != null) then | |
4087 // fill [top, end + alignment_reserve) with array object | |
4088 br_null(top, false, Assembler::pn, do_refill); | |
4089 delayed()->nop(); | |
4090 | |
4091 set((intptr_t)markOopDesc::prototype()->copy_set_hash(0x2), t2); | |
4092 st_ptr(t2, top, oopDesc::mark_offset_in_bytes()); // set up the mark word | |
4093 // set klass to intArrayKlass | |
4094 sub(t1, typeArrayOopDesc::header_size(T_INT), t1); | |
4095 add(t1, ThreadLocalAllocBuffer::alignment_reserve(), t1); | |
4096 sll_ptr(t1, log2_intptr(HeapWordSize/sizeof(jint)), t1); | |
4097 st(t1, top, arrayOopDesc::length_offset_in_bytes()); | |
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4098 set((intptr_t)Universe::intArrayKlassObj_addr(), t2); |
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4099 ld_ptr(t2, 0, t2); |
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4100 // store klass last. concurrent gcs assumes klass length is valid if |
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4101 // klass field is not null. |
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4102 store_klass(t2, top); |
0 | 4103 verify_oop(top); |
4104 | |
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4105 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_start_offset()), t1); |
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4106 sub(top, t1, t1); // size of tlab's allocated portion |
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4107 incr_allocated_bytes(t1, t2, t3); |
2100
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4108 |
0 | 4109 // refill the tlab with an eden allocation |
4110 bind(do_refill); | |
4111 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_size_offset()), t1); | |
4112 sll_ptr(t1, LogHeapWordSize, t1); | |
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4113 // allocate new tlab, address returned in top |
0 | 4114 eden_allocate(top, t1, 0, t2, t3, slow_case); |
4115 | |
4116 st_ptr(top, G2_thread, in_bytes(JavaThread::tlab_start_offset())); | |
4117 st_ptr(top, G2_thread, in_bytes(JavaThread::tlab_top_offset())); | |
4118 #ifdef ASSERT | |
4119 // check that tlab_size (t1) is still valid | |
4120 { | |
4121 Label ok; | |
4122 ld_ptr(G2_thread, in_bytes(JavaThread::tlab_size_offset()), t2); | |
4123 sll_ptr(t2, LogHeapWordSize, t2); | |
4124 cmp(t1, t2); | |
4125 br(Assembler::equal, false, Assembler::pt, ok); | |
4126 delayed()->nop(); | |
4127 stop("assert(t1 == tlab_size)"); | |
4128 should_not_reach_here(); | |
4129 | |
4130 bind(ok); | |
4131 } | |
4132 #endif // ASSERT | |
4133 add(top, t1, top); // t1 is tlab_size | |
4134 sub(top, ThreadLocalAllocBuffer::alignment_reserve_in_bytes(), top); | |
4135 st_ptr(top, G2_thread, in_bytes(JavaThread::tlab_end_offset())); | |
4136 verify_tlab(); | |
4137 br(Assembler::always, false, Assembler::pt, retry); | |
4138 delayed()->nop(); | |
4139 } | |
4140 | |
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4141 void MacroAssembler::incr_allocated_bytes(RegisterOrConstant size_in_bytes, |
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4142 Register t1, Register t2) { |
2100
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4143 // Bump total bytes allocated by this thread |
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4144 assert(t1->is_global(), "must be global reg"); // so all 64 bits are saved on a context switch |
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4145 assert_different_registers(size_in_bytes.register_or_noreg(), t1, t2); |
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4146 // v8 support has gone the way of the dodo |
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4147 ldx(G2_thread, in_bytes(JavaThread::allocated_bytes_offset()), t1); |
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4148 add(t1, ensure_simm13_or_reg(size_in_bytes, t2), t1); |
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4149 stx(t1, G2_thread, in_bytes(JavaThread::allocated_bytes_offset())); |
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4150 } |
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4151 |
0 | 4152 Assembler::Condition MacroAssembler::negate_condition(Assembler::Condition cond) { |
4153 switch (cond) { | |
4154 // Note some conditions are synonyms for others | |
4155 case Assembler::never: return Assembler::always; | |
4156 case Assembler::zero: return Assembler::notZero; | |
4157 case Assembler::lessEqual: return Assembler::greater; | |
4158 case Assembler::less: return Assembler::greaterEqual; | |
4159 case Assembler::lessEqualUnsigned: return Assembler::greaterUnsigned; | |
4160 case Assembler::lessUnsigned: return Assembler::greaterEqualUnsigned; | |
4161 case Assembler::negative: return Assembler::positive; | |
4162 case Assembler::overflowSet: return Assembler::overflowClear; | |
4163 case Assembler::always: return Assembler::never; | |
4164 case Assembler::notZero: return Assembler::zero; | |
4165 case Assembler::greater: return Assembler::lessEqual; | |
4166 case Assembler::greaterEqual: return Assembler::less; | |
4167 case Assembler::greaterUnsigned: return Assembler::lessEqualUnsigned; | |
4168 case Assembler::greaterEqualUnsigned: return Assembler::lessUnsigned; | |
4169 case Assembler::positive: return Assembler::negative; | |
4170 case Assembler::overflowClear: return Assembler::overflowSet; | |
4171 } | |
4172 | |
4173 ShouldNotReachHere(); return Assembler::overflowClear; | |
4174 } | |
4175 | |
4176 void MacroAssembler::cond_inc(Assembler::Condition cond, address counter_ptr, | |
4177 Register Rtmp1, Register Rtmp2 /*, Register Rtmp3, Register Rtmp4 */) { | |
4178 Condition negated_cond = negate_condition(cond); | |
4179 Label L; | |
4180 brx(negated_cond, false, Assembler::pt, L); | |
4181 delayed()->nop(); | |
4182 inc_counter(counter_ptr, Rtmp1, Rtmp2); | |
4183 bind(L); | |
4184 } | |
4185 | |
727 | 4186 void MacroAssembler::inc_counter(address counter_addr, Register Rtmp1, Register Rtmp2) { |
4187 AddressLiteral addrlit(counter_addr); | |
4188 sethi(addrlit, Rtmp1); // Move hi22 bits into temporary register. | |
4189 Address addr(Rtmp1, addrlit.low10()); // Build an address with low10 bits. | |
4190 ld(addr, Rtmp2); | |
0 | 4191 inc(Rtmp2); |
727 | 4192 st(Rtmp2, addr); |
4193 } | |
4194 | |
4195 void MacroAssembler::inc_counter(int* counter_addr, Register Rtmp1, Register Rtmp2) { | |
4196 inc_counter((address) counter_addr, Rtmp1, Rtmp2); | |
0 | 4197 } |
4198 | |
4199 SkipIfEqual::SkipIfEqual( | |
4200 MacroAssembler* masm, Register temp, const bool* flag_addr, | |
4201 Assembler::Condition condition) { | |
4202 _masm = masm; | |
727 | 4203 AddressLiteral flag(flag_addr); |
4204 _masm->sethi(flag, temp); | |
4205 _masm->ldub(temp, flag.low10(), temp); | |
0 | 4206 _masm->tst(temp); |
4207 _masm->br(condition, false, Assembler::pt, _label); | |
4208 _masm->delayed()->nop(); | |
4209 } | |
4210 | |
4211 SkipIfEqual::~SkipIfEqual() { | |
4212 _masm->bind(_label); | |
4213 } | |
4214 | |
4215 | |
4216 // Writes to stack successive pages until offset reached to check for | |
4217 // stack overflow + shadow pages. This clobbers tsp and scratch. | |
4218 void MacroAssembler::bang_stack_size(Register Rsize, Register Rtsp, | |
4219 Register Rscratch) { | |
4220 // Use stack pointer in temp stack pointer | |
4221 mov(SP, Rtsp); | |
4222 | |
4223 // Bang stack for total size given plus stack shadow page size. | |
4224 // Bang one page at a time because a large size can overflow yellow and | |
4225 // red zones (the bang will fail but stack overflow handling can't tell that | |
4226 // it was a stack overflow bang vs a regular segv). | |
4227 int offset = os::vm_page_size(); | |
4228 Register Roffset = Rscratch; | |
4229 | |
4230 Label loop; | |
4231 bind(loop); | |
4232 set((-offset)+STACK_BIAS, Rscratch); | |
4233 st(G0, Rtsp, Rscratch); | |
4234 set(offset, Roffset); | |
4235 sub(Rsize, Roffset, Rsize); | |
4236 cmp(Rsize, G0); | |
4237 br(Assembler::greater, false, Assembler::pn, loop); | |
4238 delayed()->sub(Rtsp, Roffset, Rtsp); | |
4239 | |
4240 // Bang down shadow pages too. | |
4241 // The -1 because we already subtracted 1 page. | |
4242 for (int i = 0; i< StackShadowPages-1; i++) { | |
4243 set((-i*offset)+STACK_BIAS, Rscratch); | |
4244 st(G0, Rtsp, Rscratch); | |
4245 } | |
4246 } | |
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4247 |
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4248 /////////////////////////////////////////////////////////////////////////////////// |
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4249 #ifndef SERIALGC |
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4250 |
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4251 static uint num_stores = 0; |
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4252 static uint num_null_pre_stores = 0; |
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4253 |
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4254 static void count_null_pre_vals(void* pre_val) { |
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4255 num_stores++; |
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4256 if (pre_val == NULL) num_null_pre_stores++; |
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4257 if ((num_stores % 1000000) == 0) { |
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4258 tty->print_cr(UINT32_FORMAT " stores, " UINT32_FORMAT " (%5.2f%%) with null pre-vals.", |
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4259 num_stores, num_null_pre_stores, |
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4260 100.0*(float)num_null_pre_stores/(float)num_stores); |
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4261 } |
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4262 } |
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4263 |
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4264 static address satb_log_enqueue_with_frame = 0; |
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4265 static u_char* satb_log_enqueue_with_frame_end = 0; |
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4266 |
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4267 static address satb_log_enqueue_frameless = 0; |
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4268 static u_char* satb_log_enqueue_frameless_end = 0; |
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4269 |
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4270 static int EnqueueCodeSize = 128 DEBUG_ONLY( + 256); // Instructions? |
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4271 |
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4272 // The calls to this don't work. We'd need to do a fair amount of work to |
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4273 // make it work. |
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4274 static void check_index(int ind) { |
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4275 assert(0 <= ind && ind <= 64*K && ((ind % oopSize) == 0), |
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4276 "Invariants."); |
342
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4277 } |
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4278 |
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4279 static void generate_satb_log_enqueue(bool with_frame) { |
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4280 BufferBlob* bb = BufferBlob::create("enqueue_with_frame", EnqueueCodeSize); |
1748 | 4281 CodeBuffer buf(bb); |
342
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4282 MacroAssembler masm(&buf); |
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4283 address start = masm.pc(); |
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4284 Register pre_val; |
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4285 |
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4286 Label refill, restart; |
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4287 if (with_frame) { |
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4288 masm.save_frame(0); |
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4289 pre_val = I0; // Was O0 before the save. |
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4290 } else { |
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4291 pre_val = O0; |
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4292 } |
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4293 int satb_q_index_byte_offset = |
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4294 in_bytes(JavaThread::satb_mark_queue_offset() + |
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4295 PtrQueue::byte_offset_of_index()); |
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4296 int satb_q_buf_byte_offset = |
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4297 in_bytes(JavaThread::satb_mark_queue_offset() + |
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4298 PtrQueue::byte_offset_of_buf()); |
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4299 assert(in_bytes(PtrQueue::byte_width_of_index()) == sizeof(intptr_t) && |
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4300 in_bytes(PtrQueue::byte_width_of_buf()) == sizeof(intptr_t), |
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4301 "check sizes in assembly below"); |
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4302 |
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4303 masm.bind(restart); |
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4304 masm.ld_ptr(G2_thread, satb_q_index_byte_offset, L0); |
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4305 |
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4306 masm.br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pn, L0, refill); |
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4307 // If the branch is taken, no harm in executing this in the delay slot. |
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4308 masm.delayed()->ld_ptr(G2_thread, satb_q_buf_byte_offset, L1); |
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4309 masm.sub(L0, oopSize, L0); |
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4310 |
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4311 masm.st_ptr(pre_val, L1, L0); // [_buf + index] := I0 |
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4312 if (!with_frame) { |
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4313 // Use return-from-leaf |
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4314 masm.retl(); |
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4315 masm.delayed()->st_ptr(L0, G2_thread, satb_q_index_byte_offset); |
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4316 } else { |
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4317 // Not delayed. |
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4318 masm.st_ptr(L0, G2_thread, satb_q_index_byte_offset); |
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4319 } |
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4320 if (with_frame) { |
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4321 masm.ret(); |
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4322 masm.delayed()->restore(); |
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4323 } |
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4324 masm.bind(refill); |
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4325 |
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4326 address handle_zero = |
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4327 CAST_FROM_FN_PTR(address, |
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4328 &SATBMarkQueueSet::handle_zero_index_for_thread); |
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4329 // This should be rare enough that we can afford to save all the |
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4330 // scratch registers that the calling context might be using. |
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4331 masm.mov(G1_scratch, L0); |
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4332 masm.mov(G3_scratch, L1); |
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4333 masm.mov(G4, L2); |
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4334 // We need the value of O0 above (for the write into the buffer), so we |
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4335 // save and restore it. |
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4336 masm.mov(O0, L3); |
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4337 // Since the call will overwrite O7, we save and restore that, as well. |
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4338 masm.mov(O7, L4); |
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4339 masm.call_VM_leaf(L5, handle_zero, G2_thread); |
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4340 masm.mov(L0, G1_scratch); |
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4341 masm.mov(L1, G3_scratch); |
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4342 masm.mov(L2, G4); |
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4343 masm.mov(L3, O0); |
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4344 masm.br(Assembler::always, /*annul*/false, Assembler::pt, restart); |
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4345 masm.delayed()->mov(L4, O7); |
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4346 |
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4347 if (with_frame) { |
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4348 satb_log_enqueue_with_frame = start; |
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4349 satb_log_enqueue_with_frame_end = masm.pc(); |
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4350 } else { |
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4351 satb_log_enqueue_frameless = start; |
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4352 satb_log_enqueue_frameless_end = masm.pc(); |
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4353 } |
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4354 } |
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4355 |
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4356 static inline void generate_satb_log_enqueue_if_necessary(bool with_frame) { |
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4357 if (with_frame) { |
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4358 if (satb_log_enqueue_with_frame == 0) { |
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4359 generate_satb_log_enqueue(with_frame); |
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4360 assert(satb_log_enqueue_with_frame != 0, "postcondition."); |
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4361 if (G1SATBPrintStubs) { |
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4362 tty->print_cr("Generated with-frame satb enqueue:"); |
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4363 Disassembler::decode((u_char*)satb_log_enqueue_with_frame, |
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4364 satb_log_enqueue_with_frame_end, |
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4365 tty); |
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4366 } |
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4367 } |
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4368 } else { |
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4369 if (satb_log_enqueue_frameless == 0) { |
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4370 generate_satb_log_enqueue(with_frame); |
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4371 assert(satb_log_enqueue_frameless != 0, "postcondition."); |
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|
4372 if (G1SATBPrintStubs) { |
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4373 tty->print_cr("Generated frameless satb enqueue:"); |
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4374 Disassembler::decode((u_char*)satb_log_enqueue_frameless, |
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4375 satb_log_enqueue_frameless_end, |
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|
4376 tty); |
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|
4377 } |
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|
4378 } |
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|
4379 } |
37f87013dfd8
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|
4380 } |
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|
4381 |
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4382 void MacroAssembler::g1_write_barrier_pre(Register obj, Register index, int offset, Register tmp, bool preserve_o_regs) { |
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4383 assert(offset == 0 || index == noreg, "choose one"); |
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4384 |
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4385 if (G1DisablePreBarrier) return; |
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4386 // satb_log_barrier(tmp, obj, offset, preserve_o_regs); |
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4387 Label filtered; |
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4388 // satb_log_barrier_work0(tmp, filtered); |
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4389 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { |
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4390 ld(G2, |
37f87013dfd8
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|
4391 in_bytes(JavaThread::satb_mark_queue_offset() + |
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|
4392 PtrQueue::byte_offset_of_active()), |
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|
4393 tmp); |
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|
4394 } else { |
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4395 guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, |
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|
4396 "Assumption"); |
37f87013dfd8
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|
4397 ldsb(G2, |
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|
4398 in_bytes(JavaThread::satb_mark_queue_offset() + |
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|
4399 PtrQueue::byte_offset_of_active()), |
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|
4400 tmp); |
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|
4401 } |
845
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|
4402 |
342
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4403 // Check on whether to annul. |
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4404 br_on_reg_cond(rc_z, /*annul*/false, Assembler::pt, tmp, filtered); |
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4405 delayed() -> nop(); |
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|
4406 |
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4407 // satb_log_barrier_work1(tmp, offset); |
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|
4408 if (index == noreg) { |
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|
4409 if (Assembler::is_simm13(offset)) { |
845
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|
4410 load_heap_oop(obj, offset, tmp); |
342
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|
4411 } else { |
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|
4412 set(offset, tmp); |
845
df6caf649ff7
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|
4413 load_heap_oop(obj, tmp, tmp); |
342
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|
4414 } |
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|
4415 } else { |
845
df6caf649ff7
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|
4416 load_heap_oop(obj, index, tmp); |
342
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|
4417 } |
37f87013dfd8
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|
4418 |
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|
4419 // satb_log_barrier_work2(obj, tmp, offset); |
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|
4420 |
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4421 // satb_log_barrier_work3(tmp, filtered, preserve_o_regs); |
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|
4422 |
37f87013dfd8
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|
4423 const Register pre_val = tmp; |
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|
4424 |
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|
4425 if (G1SATBBarrierPrintNullPreVals) { |
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|
4426 save_frame(0); |
37f87013dfd8
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|
4427 mov(pre_val, O0); |
37f87013dfd8
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|
4428 // Save G-regs that target may use. |
37f87013dfd8
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|
4429 mov(G1, L1); |
37f87013dfd8
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|
4430 mov(G2, L2); |
37f87013dfd8
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|
4431 mov(G3, L3); |
37f87013dfd8
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|
4432 mov(G4, L4); |
37f87013dfd8
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|
4433 mov(G5, L5); |
37f87013dfd8
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|
4434 call(CAST_FROM_FN_PTR(address, &count_null_pre_vals)); |
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|
4435 delayed()->nop(); |
37f87013dfd8
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|
4436 // Restore G-regs that target may have used. |
37f87013dfd8
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diff
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|
4437 mov(L1, G1); |
37f87013dfd8
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124
diff
changeset
|
4438 mov(L2, G2); |
37f87013dfd8
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124
diff
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|
4439 mov(L3, G3); |
37f87013dfd8
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124
diff
changeset
|
4440 mov(L4, G4); |
37f87013dfd8
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124
diff
changeset
|
4441 mov(L5, G5); |
37f87013dfd8
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|
4442 restore(G0, G0, G0); |
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124
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|
4443 } |
37f87013dfd8
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|
4444 |
37f87013dfd8
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124
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|
4445 // Check on whether to annul. |
37f87013dfd8
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|
4446 br_on_reg_cond(rc_z, /*annul*/false, Assembler::pt, pre_val, filtered); |
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|
4447 delayed() -> nop(); |
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|
4448 |
37f87013dfd8
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|
4449 // OK, it's not filtered, so we'll need to call enqueue. In the normal |
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4450 // case, pre_val will be a scratch G-reg, but there's some cases in which |
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|
4451 // it's an O-reg. In the first case, do a normal call. In the latter, |
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|
4452 // do a save here and call the frameless version. |
37f87013dfd8
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|
4453 |
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|
4454 guarantee(pre_val->is_global() || pre_val->is_out(), |
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|
4455 "Or we need to think harder."); |
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|
4456 if (pre_val->is_global() && !preserve_o_regs) { |
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|
4457 generate_satb_log_enqueue_if_necessary(true); // with frame. |
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|
4458 call(satb_log_enqueue_with_frame); |
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124
diff
changeset
|
4459 delayed()->mov(pre_val, O0); |
37f87013dfd8
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124
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|
4460 } else { |
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|
4461 generate_satb_log_enqueue_if_necessary(false); // with frameless. |
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|
4462 save_frame(0); |
37f87013dfd8
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|
4463 call(satb_log_enqueue_frameless); |
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|
4464 delayed()->mov(pre_val->after_save(), O0); |
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|
4465 restore(); |
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|
4466 } |
37f87013dfd8
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|
4467 |
37f87013dfd8
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|
4468 bind(filtered); |
37f87013dfd8
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124
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|
4469 } |
37f87013dfd8
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124
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|
4470 |
37f87013dfd8
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|
4471 static jint num_ct_writes = 0; |
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|
4472 static jint num_ct_writes_filtered_in_hr = 0; |
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|
4473 static jint num_ct_writes_filtered_null = 0; |
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|
4474 static G1CollectedHeap* g1 = NULL; |
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|
4475 |
37f87013dfd8
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|
4476 static Thread* count_ct_writes(void* filter_val, void* new_val) { |
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|
4477 Atomic::inc(&num_ct_writes); |
37f87013dfd8
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124
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|
4478 if (filter_val == NULL) { |
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|
4479 Atomic::inc(&num_ct_writes_filtered_in_hr); |
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|
4480 } else if (new_val == NULL) { |
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|
4481 Atomic::inc(&num_ct_writes_filtered_null); |
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|
4482 } else { |
37f87013dfd8
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|
4483 if (g1 == NULL) { |
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|
4484 g1 = G1CollectedHeap::heap(); |
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|
4485 } |
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|
4486 } |
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4487 if ((num_ct_writes % 1000000) == 0) { |
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|
4488 jint num_ct_writes_filtered = |
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|
4489 num_ct_writes_filtered_in_hr + |
677 | 4490 num_ct_writes_filtered_null; |
342
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|
4491 |
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|
4492 tty->print_cr("%d potential CT writes: %5.2f%% filtered\n" |
677 | 4493 " (%5.2f%% intra-HR, %5.2f%% null).", |
342
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|
4494 num_ct_writes, |
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|
4495 100.0*(float)num_ct_writes_filtered/(float)num_ct_writes, |
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|
4496 100.0*(float)num_ct_writes_filtered_in_hr/ |
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|
4497 (float)num_ct_writes, |
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|
4498 100.0*(float)num_ct_writes_filtered_null/ |
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|
4499 (float)num_ct_writes); |
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|
4500 } |
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|
4501 return Thread::current(); |
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|
4502 } |
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|
4503 |
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4504 static address dirty_card_log_enqueue = 0; |
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4505 static u_char* dirty_card_log_enqueue_end = 0; |
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|
4506 |
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4507 // This gets to assume that o0 contains the object address. |
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|
4508 static void generate_dirty_card_log_enqueue(jbyte* byte_map_base) { |
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|
4509 BufferBlob* bb = BufferBlob::create("dirty_card_enqueue", EnqueueCodeSize*2); |
1748 | 4510 CodeBuffer buf(bb); |
342
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4511 MacroAssembler masm(&buf); |
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4512 address start = masm.pc(); |
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|
4513 |
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4514 Label not_already_dirty, restart, refill; |
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4515 |
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4516 #ifdef _LP64 |
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4517 masm.srlx(O0, CardTableModRefBS::card_shift, O0); |
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4518 #else |
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4519 masm.srl(O0, CardTableModRefBS::card_shift, O0); |
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4520 #endif |
727 | 4521 AddressLiteral addrlit(byte_map_base); |
4522 masm.set(addrlit, O1); // O1 := <card table base> | |
342
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4523 masm.ldub(O0, O1, O2); // O2 := [O0 + O1] |
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4524 |
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4525 masm.br_on_reg_cond(Assembler::rc_nz, /*annul*/false, Assembler::pt, |
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4526 O2, not_already_dirty); |
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4527 // Get O1 + O2 into a reg by itself -- useful in the take-the-branch |
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4528 // case, harmless if not. |
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4529 masm.delayed()->add(O0, O1, O3); |
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4530 |
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4531 // We didn't take the branch, so we're already dirty: return. |
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|
4532 // Use return-from-leaf |
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|
4533 masm.retl(); |
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|
4534 masm.delayed()->nop(); |
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|
4535 |
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|
4536 // Not dirty. |
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|
4537 masm.bind(not_already_dirty); |
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|
4538 // First, dirty it. |
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4539 masm.stb(G0, O3, G0); // [cardPtr] := 0 (i.e., dirty). |
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4540 int dirty_card_q_index_byte_offset = |
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|
4541 in_bytes(JavaThread::dirty_card_queue_offset() + |
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|
4542 PtrQueue::byte_offset_of_index()); |
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|
4543 int dirty_card_q_buf_byte_offset = |
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4544 in_bytes(JavaThread::dirty_card_queue_offset() + |
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|
4545 PtrQueue::byte_offset_of_buf()); |
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|
4546 masm.bind(restart); |
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4547 masm.ld_ptr(G2_thread, dirty_card_q_index_byte_offset, L0); |
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4548 |
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4549 masm.br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pn, |
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4550 L0, refill); |
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4551 // If the branch is taken, no harm in executing this in the delay slot. |
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4552 masm.delayed()->ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, L1); |
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4553 masm.sub(L0, oopSize, L0); |
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4554 |
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4555 masm.st_ptr(O3, L1, L0); // [_buf + index] := I0 |
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4556 // Use return-from-leaf |
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|
4557 masm.retl(); |
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4558 masm.delayed()->st_ptr(L0, G2_thread, dirty_card_q_index_byte_offset); |
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|
4559 |
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|
4560 masm.bind(refill); |
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|
4561 address handle_zero = |
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|
4562 CAST_FROM_FN_PTR(address, |
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4563 &DirtyCardQueueSet::handle_zero_index_for_thread); |
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|
4564 // This should be rare enough that we can afford to save all the |
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|
4565 // scratch registers that the calling context might be using. |
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|
4566 masm.mov(G1_scratch, L3); |
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|
4567 masm.mov(G3_scratch, L5); |
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|
4568 // We need the value of O3 above (for the write into the buffer), so we |
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|
4569 // save and restore it. |
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|
4570 masm.mov(O3, L6); |
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|
4571 // Since the call will overwrite O7, we save and restore that, as well. |
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|
4572 masm.mov(O7, L4); |
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|
4573 |
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4574 masm.call_VM_leaf(L7_thread_cache, handle_zero, G2_thread); |
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4575 masm.mov(L3, G1_scratch); |
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|
4576 masm.mov(L5, G3_scratch); |
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|
4577 masm.mov(L6, O3); |
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4578 masm.br(Assembler::always, /*annul*/false, Assembler::pt, restart); |
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|
4579 masm.delayed()->mov(L4, O7); |
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|
4580 |
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|
4581 dirty_card_log_enqueue = start; |
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|
4582 dirty_card_log_enqueue_end = masm.pc(); |
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|
4583 // XXX Should have a guarantee here about not going off the end! |
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|
4584 // Does it already do so? Do an experiment... |
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|
4585 } |
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|
4586 |
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|
4587 static inline void |
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4588 generate_dirty_card_log_enqueue_if_necessary(jbyte* byte_map_base) { |
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4589 if (dirty_card_log_enqueue == 0) { |
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|
4590 generate_dirty_card_log_enqueue(byte_map_base); |
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4591 assert(dirty_card_log_enqueue != 0, "postcondition."); |
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4592 if (G1SATBPrintStubs) { |
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4593 tty->print_cr("Generated dirty_card enqueue:"); |
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4594 Disassembler::decode((u_char*)dirty_card_log_enqueue, |
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|
4595 dirty_card_log_enqueue_end, |
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|
4596 tty); |
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|
4597 } |
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|
4598 } |
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|
4599 } |
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|
4600 |
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|
4601 |
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4602 void MacroAssembler::g1_write_barrier_post(Register store_addr, Register new_val, Register tmp) { |
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4603 |
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|
4604 Label filtered; |
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|
4605 MacroAssembler* post_filter_masm = this; |
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4606 |
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4607 if (new_val == G0) return; |
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|
4608 if (G1DisablePostBarrier) return; |
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|
4609 |
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4610 G1SATBCardTableModRefBS* bs = (G1SATBCardTableModRefBS*) Universe::heap()->barrier_set(); |
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4611 assert(bs->kind() == BarrierSet::G1SATBCT || |
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4612 bs->kind() == BarrierSet::G1SATBCTLogging, "wrong barrier"); |
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4613 if (G1RSBarrierRegionFilter) { |
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4614 xor3(store_addr, new_val, tmp); |
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4615 #ifdef _LP64 |
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4616 srlx(tmp, HeapRegion::LogOfHRGrainBytes, tmp); |
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4617 #else |
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4618 srl(tmp, HeapRegion::LogOfHRGrainBytes, tmp); |
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4619 #endif |
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4620 if (G1PrintCTFilterStats) { |
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4621 guarantee(tmp->is_global(), "Or stats won't work..."); |
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4622 // This is a sleazy hack: I'm temporarily hijacking G2, which I |
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4623 // promise to restore. |
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4624 mov(new_val, G2); |
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4625 save_frame(0); |
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4626 mov(tmp, O0); |
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4627 mov(G2, O1); |
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4628 // Save G-regs that target may use. |
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4629 mov(G1, L1); |
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4630 mov(G2, L2); |
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4631 mov(G3, L3); |
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4632 mov(G4, L4); |
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4633 mov(G5, L5); |
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4634 call(CAST_FROM_FN_PTR(address, &count_ct_writes)); |
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4635 delayed()->nop(); |
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4636 mov(O0, G2); |
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4637 // Restore G-regs that target may have used. |
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4638 mov(L1, G1); |
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4639 mov(L3, G3); |
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4640 mov(L4, G4); |
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4641 mov(L5, G5); |
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4642 restore(G0, G0, G0); |
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4643 } |
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4644 // XXX Should I predict this taken or not? Does it mattern? |
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4645 br_on_reg_cond(rc_z, /*annul*/false, Assembler::pt, tmp, filtered); |
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4646 delayed()->nop(); |
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|
4647 } |
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4648 |
794 | 4649 // If the "store_addr" register is an "in" or "local" register, move it to |
4650 // a scratch reg so we can pass it as an argument. | |
4651 bool use_scr = !(store_addr->is_global() || store_addr->is_out()); | |
4652 // Pick a scratch register different from "tmp". | |
4653 Register scr = (tmp == G1_scratch ? G3_scratch : G1_scratch); | |
4654 // Make sure we use up the delay slot! | |
4655 if (use_scr) { | |
4656 post_filter_masm->mov(store_addr, scr); | |
342
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4657 } else { |
794 | 4658 post_filter_masm->nop(); |
342
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4659 } |
794 | 4660 generate_dirty_card_log_enqueue_if_necessary(bs->byte_map_base); |
4661 save_frame(0); | |
4662 call(dirty_card_log_enqueue); | |
4663 if (use_scr) { | |
4664 delayed()->mov(scr, O0); | |
4665 } else { | |
4666 delayed()->mov(store_addr->after_save(), O0); | |
4667 } | |
4668 restore(); | |
342
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4669 |
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4670 bind(filtered); |
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|
4671 |
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4672 } |
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4673 |
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4674 #endif // SERIALGC |
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4675 /////////////////////////////////////////////////////////////////////////////////// |
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4676 |
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4677 void MacroAssembler::card_write_barrier_post(Register store_addr, Register new_val, Register tmp) { |
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4678 // If we're writing constant NULL, we can skip the write barrier. |
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4679 if (new_val == G0) return; |
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4680 CardTableModRefBS* bs = (CardTableModRefBS*) Universe::heap()->barrier_set(); |
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4681 assert(bs->kind() == BarrierSet::CardTableModRef || |
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4682 bs->kind() == BarrierSet::CardTableExtension, "wrong barrier"); |
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4683 card_table_write(bs->byte_map_base, tmp, store_addr); |
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4684 } |
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4685 |
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4686 void MacroAssembler::load_klass(Register src_oop, Register klass) { |
113
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4687 // The number of bytes in this code is used by |
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4688 // MachCallDynamicJavaNode::ret_addr_offset() |
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4689 // if this changes, change that. |
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4690 if (UseCompressedOops) { |
164
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4691 lduw(src_oop, oopDesc::klass_offset_in_bytes(), klass); |
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4692 decode_heap_oop_not_null(klass); |
113
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4693 } else { |
164
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4694 ld_ptr(src_oop, oopDesc::klass_offset_in_bytes(), klass); |
113
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4695 } |
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|
4696 } |
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4697 |
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4698 void MacroAssembler::store_klass(Register klass, Register dst_oop) { |
113
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4699 if (UseCompressedOops) { |
164
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4700 assert(dst_oop != klass, "not enough registers"); |
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4701 encode_heap_oop_not_null(klass); |
167
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4702 st(klass, dst_oop, oopDesc::klass_offset_in_bytes()); |
113
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4703 } else { |
164
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4704 st_ptr(klass, dst_oop, oopDesc::klass_offset_in_bytes()); |
113
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4705 } |
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|
4706 } |
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|
4707 |
167
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|
4708 void MacroAssembler::store_klass_gap(Register s, Register d) { |
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|
4709 if (UseCompressedOops) { |
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|
4710 assert(s != d, "not enough registers"); |
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|
4711 st(s, d, oopDesc::klass_gap_offset_in_bytes()); |
113
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4712 } |
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|
4713 } |
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4714 |
727 | 4715 void MacroAssembler::load_heap_oop(const Address& s, Register d) { |
113
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4716 if (UseCompressedOops) { |
727 | 4717 lduw(s, d); |
113
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|
4718 decode_heap_oop(d); |
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4719 } else { |
727 | 4720 ld_ptr(s, d); |
113
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4721 } |
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|
4722 } |
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4723 |
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|
4724 void MacroAssembler::load_heap_oop(Register s1, Register s2, Register d) { |
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4725 if (UseCompressedOops) { |
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|
4726 lduw(s1, s2, d); |
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4727 decode_heap_oop(d, d); |
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|
4728 } else { |
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|
4729 ld_ptr(s1, s2, d); |
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|
4730 } |
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|
4731 } |
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|
4732 |
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|
4733 void MacroAssembler::load_heap_oop(Register s1, int simm13a, Register d) { |
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|
4734 if (UseCompressedOops) { |
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|
4735 lduw(s1, simm13a, d); |
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|
4736 decode_heap_oop(d, d); |
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|
4737 } else { |
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|
4738 ld_ptr(s1, simm13a, d); |
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4739 } |
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|
4740 } |
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|
4741 |
1846 | 4742 void MacroAssembler::load_heap_oop(Register s1, RegisterOrConstant s2, Register d) { |
4743 if (s2.is_constant()) load_heap_oop(s1, s2.as_constant(), d); | |
4744 else load_heap_oop(s1, s2.as_register(), d); | |
4745 } | |
4746 | |
113
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4747 void MacroAssembler::store_heap_oop(Register d, Register s1, Register s2) { |
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4748 if (UseCompressedOops) { |
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|
4749 assert(s1 != d && s2 != d, "not enough registers"); |
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|
4750 encode_heap_oop(d); |
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|
4751 st(d, s1, s2); |
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4752 } else { |
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4753 st_ptr(d, s1, s2); |
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4754 } |
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|
4755 } |
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|
4756 |
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|
4757 void MacroAssembler::store_heap_oop(Register d, Register s1, int simm13a) { |
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4758 if (UseCompressedOops) { |
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|
4759 assert(s1 != d, "not enough registers"); |
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|
4760 encode_heap_oop(d); |
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4761 st(d, s1, simm13a); |
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4762 } else { |
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|
4763 st_ptr(d, s1, simm13a); |
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4764 } |
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|
4765 } |
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|
4766 |
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|
4767 void MacroAssembler::store_heap_oop(Register d, const Address& a, int offset) { |
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4768 if (UseCompressedOops) { |
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|
4769 assert(a.base() != d, "not enough registers"); |
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4770 encode_heap_oop(d); |
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4771 st(d, a, offset); |
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4772 } else { |
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|
4773 st_ptr(d, a, offset); |
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4774 } |
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|
4775 } |
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|
4776 |
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|
4777 |
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|
4778 void MacroAssembler::encode_heap_oop(Register src, Register dst) { |
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|
4779 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
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623
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|
4780 assert (Universe::heap() != NULL, "java heap should be initialized"); |
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|
4781 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
178
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4782 verify_oop(src); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4783 if (Universe::narrow_oop_base() == NULL) { |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4784 srlx(src, LogMinObjAlignmentInBytes, dst); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4785 return; |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4786 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4787 Label done; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4788 if (src == dst) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4789 // optimize for frequent case src == dst |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4790 bpr(rc_nz, true, Assembler::pt, src, done); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4791 delayed() -> sub(src, G6_heapbase, dst); // annuled if not taken |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4792 bind(done); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4793 srlx(src, LogMinObjAlignmentInBytes, dst); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4794 } else { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4795 bpr(rc_z, false, Assembler::pn, src, done); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4796 delayed() -> mov(G0, dst); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4797 // could be moved before branch, and annulate delay, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4798 // but may add some unneeded work decoding null |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4799 sub(src, G6_heapbase, dst); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4800 srlx(dst, LogMinObjAlignmentInBytes, dst); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4801 bind(done); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4802 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4803 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4804 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4805 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4806 void MacroAssembler::encode_heap_oop_not_null(Register r) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4807 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4808 assert (Universe::heap() != NULL, "java heap should be initialized"); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4809 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
178
6d172e3548cb
6695819: verify_oopx rax: broken oop in decode_heap_oop
coleenp
parents:
124
diff
changeset
|
4810 verify_oop(r); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4811 if (Universe::narrow_oop_base() != NULL) |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4812 sub(r, G6_heapbase, r); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4813 srlx(r, LogMinObjAlignmentInBytes, r); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4814 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4815 |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4816 void MacroAssembler::encode_heap_oop_not_null(Register src, Register dst) { |
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4817 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4818 assert (Universe::heap() != NULL, "java heap should be initialized"); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4819 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
178
6d172e3548cb
6695819: verify_oopx rax: broken oop in decode_heap_oop
coleenp
parents:
124
diff
changeset
|
4820 verify_oop(src); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4821 if (Universe::narrow_oop_base() == NULL) { |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4822 srlx(src, LogMinObjAlignmentInBytes, dst); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4823 } else { |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4824 sub(src, G6_heapbase, dst); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4825 srlx(dst, LogMinObjAlignmentInBytes, dst); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4826 } |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4827 } |
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4828 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4829 // Same algorithm as oops.inline.hpp decode_heap_oop. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4830 void MacroAssembler::decode_heap_oop(Register src, Register dst) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4831 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4832 assert (Universe::heap() != NULL, "java heap should be initialized"); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4833 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4834 sllx(src, LogMinObjAlignmentInBytes, dst); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4835 if (Universe::narrow_oop_base() != NULL) { |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4836 Label done; |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4837 bpr(rc_nz, true, Assembler::pt, dst, done); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4838 delayed() -> add(dst, G6_heapbase, dst); // annuled if not taken |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4839 bind(done); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4840 } |
178
6d172e3548cb
6695819: verify_oopx rax: broken oop in decode_heap_oop
coleenp
parents:
124
diff
changeset
|
4841 verify_oop(dst); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4842 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4843 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4844 void MacroAssembler::decode_heap_oop_not_null(Register r) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4845 // Do not add assert code to this unless you change vtableStubs_sparc.cpp |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4846 // pd_code_size_limit. |
178
6d172e3548cb
6695819: verify_oopx rax: broken oop in decode_heap_oop
coleenp
parents:
124
diff
changeset
|
4847 // Also do not verify_oop as this is called by verify_oop. |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4848 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4849 assert (Universe::heap() != NULL, "java heap should be initialized"); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4850 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4851 sllx(r, LogMinObjAlignmentInBytes, r); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4852 if (Universe::narrow_oop_base() != NULL) |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4853 add(r, G6_heapbase, r); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4854 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4855 |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4856 void MacroAssembler::decode_heap_oop_not_null(Register src, Register dst) { |
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4857 // Do not add assert code to this unless you change vtableStubs_sparc.cpp |
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4858 // pd_code_size_limit. |
178
6d172e3548cb
6695819: verify_oopx rax: broken oop in decode_heap_oop
coleenp
parents:
124
diff
changeset
|
4859 // Also do not verify_oop as this is called by verify_oop. |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4860 assert (UseCompressedOops, "must be compressed"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4861 assert (Universe::heap() != NULL, "java heap should be initialized"); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4862 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong"); |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4863 sllx(src, LogMinObjAlignmentInBytes, dst); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4864 if (Universe::narrow_oop_base() != NULL) |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
623
diff
changeset
|
4865 add(dst, G6_heapbase, dst); |
124
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4866 } |
b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
kvn
parents:
113
diff
changeset
|
4867 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4868 void MacroAssembler::reinit_heapbase() { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4869 if (UseCompressedOops) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4870 // call indirectly to solve generation ordering problem |
727 | 4871 AddressLiteral base(Universe::narrow_oop_base_addr()); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4872 load_ptr_contents(base, G6_heapbase); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4873 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
4874 } |
986
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4875 |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4876 // Compare char[] arrays aligned to 4 bytes. |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4877 void MacroAssembler::char_arrays_equals(Register ary1, Register ary2, |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4878 Register limit, Register result, |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4879 Register chr1, Register chr2, Label& Ldone) { |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4880 Label Lvector, Lloop; |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4881 assert(chr1 == result, "should be the same"); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4882 |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4883 // Note: limit contains number of bytes (2*char_elements) != 0. |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4884 andcc(limit, 0x2, chr1); // trailing character ? |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4885 br(Assembler::zero, false, Assembler::pt, Lvector); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4886 delayed()->nop(); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4887 |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4888 // compare the trailing char |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4889 sub(limit, sizeof(jchar), limit); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4890 lduh(ary1, limit, chr1); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4891 lduh(ary2, limit, chr2); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4892 cmp(chr1, chr2); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4893 br(Assembler::notEqual, true, Assembler::pt, Ldone); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4894 delayed()->mov(G0, result); // not equal |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4895 |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4896 // only one char ? |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4897 br_on_reg_cond(rc_z, true, Assembler::pn, limit, Ldone); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4898 delayed()->add(G0, 1, result); // zero-length arrays are equal |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4899 |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4900 // word by word compare, dont't need alignment check |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4901 bind(Lvector); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4902 // Shift ary1 and ary2 to the end of the arrays, negate limit |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
845
diff
changeset
|
4903 add(ary1, limit, ary1); |
62001a362ce9
6827605: new String intrinsics may prevent EA scalar replacement
kvn
parents:
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4904 add(ary2, limit, ary2); |
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4905 neg(limit, limit); |
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4906 |
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4907 lduw(ary1, limit, chr1); |
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4908 bind(Lloop); |
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4909 lduw(ary2, limit, chr2); |
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4910 cmp(chr1, chr2); |
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4911 br(Assembler::notEqual, true, Assembler::pt, Ldone); |
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4912 delayed()->mov(G0, result); // not equal |
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4913 inccc(limit, 2*sizeof(jchar)); |
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4914 // annul LDUW if branch is not taken to prevent access past end of array |
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4915 br(Assembler::notZero, true, Assembler::pt, Lloop); |
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4916 delayed()->lduw(ary1, limit, chr1); // hoisted |
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4917 |
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4918 // Caller should set it: |
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4919 // add(G0, 1, result); // equals |
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4920 } |
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4921 |