Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 822:e306d7c7222c
Merge
author | twisti |
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date | Wed, 24 Jun 2009 02:09:45 -0700 |
parents | be93aad57795 |
children | bd02caa94611 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 2003-2008 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_templateTable_x86_64.cpp.incl" | |
27 | |
304 | 28 #ifndef CC_INTERP |
29 | |
0 | 30 #define __ _masm-> |
31 | |
32 // Platform-dependent initialization | |
33 | |
34 void TemplateTable::pd_initialize() { | |
35 // No amd64 specific initialization | |
36 } | |
37 | |
38 // Address computation: local variables | |
39 | |
40 static inline Address iaddress(int n) { | |
41 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
42 } | |
43 | |
44 static inline Address laddress(int n) { | |
45 return iaddress(n + 1); | |
46 } | |
47 | |
48 static inline Address faddress(int n) { | |
49 return iaddress(n); | |
50 } | |
51 | |
52 static inline Address daddress(int n) { | |
53 return laddress(n); | |
54 } | |
55 | |
56 static inline Address aaddress(int n) { | |
57 return iaddress(n); | |
58 } | |
59 | |
60 static inline Address iaddress(Register r) { | |
61 return Address(r14, r, Address::times_8, Interpreter::value_offset_in_bytes()); | |
62 } | |
63 | |
64 static inline Address laddress(Register r) { | |
65 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
66 } | |
67 | |
68 static inline Address faddress(Register r) { | |
69 return iaddress(r); | |
70 } | |
71 | |
72 static inline Address daddress(Register r) { | |
73 return laddress(r); | |
74 } | |
75 | |
76 static inline Address aaddress(Register r) { | |
77 return iaddress(r); | |
78 } | |
79 | |
80 static inline Address at_rsp() { | |
81 return Address(rsp, 0); | |
82 } | |
83 | |
84 // At top of Java expression stack which may be different than esp(). It | |
85 // isn't for category 1 objects. | |
86 static inline Address at_tos () { | |
87 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
88 } | |
89 | |
90 static inline Address at_tos_p1() { | |
91 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
92 } | |
93 | |
94 static inline Address at_tos_p2() { | |
95 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
96 } | |
97 | |
98 static inline Address at_tos_p3() { | |
99 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
100 } | |
101 | |
102 // Condition conversion | |
103 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
104 switch (cc) { | |
105 case TemplateTable::equal : return Assembler::notEqual; | |
106 case TemplateTable::not_equal : return Assembler::equal; | |
107 case TemplateTable::less : return Assembler::greaterEqual; | |
108 case TemplateTable::less_equal : return Assembler::greater; | |
109 case TemplateTable::greater : return Assembler::lessEqual; | |
110 case TemplateTable::greater_equal: return Assembler::less; | |
111 } | |
112 ShouldNotReachHere(); | |
113 return Assembler::zero; | |
114 } | |
115 | |
116 | |
117 // Miscelaneous helper routines | |
342
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118 // Store an oop (or NULL) at the address described by obj. |
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119 // If val == noreg this means store a NULL |
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120 |
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121 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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122 Address obj, |
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123 Register val, |
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124 BarrierSet::Name barrier, |
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125 bool precise) { |
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126 assert(val == noreg || val == rax, "parameter is just for looks"); |
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127 switch (barrier) { |
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128 #ifndef SERIALGC |
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129 case BarrierSet::G1SATBCT: |
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130 case BarrierSet::G1SATBCTLogging: |
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131 { |
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132 // flatten object address if needed |
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133 if (obj.index() == noreg && obj.disp() == 0) { |
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134 if (obj.base() != rdx) { |
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135 __ movq(rdx, obj.base()); |
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136 } |
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137 } else { |
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138 __ leaq(rdx, obj); |
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139 } |
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140 __ g1_write_barrier_pre(rdx, r8, rbx, val != noreg); |
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141 if (val == noreg) { |
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142 __ store_heap_oop(Address(rdx, 0), NULL_WORD); |
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143 } else { |
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144 __ store_heap_oop(Address(rdx, 0), val); |
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145 __ g1_write_barrier_post(rdx, val, r8, rbx); |
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146 } |
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147 |
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148 } |
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149 break; |
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150 #endif // SERIALGC |
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151 case BarrierSet::CardTableModRef: |
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152 case BarrierSet::CardTableExtension: |
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153 { |
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154 if (val == noreg) { |
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155 __ store_heap_oop(obj, NULL_WORD); |
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156 } else { |
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157 __ store_heap_oop(obj, val); |
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158 // flatten object address if needed |
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159 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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160 __ store_check(obj.base()); |
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161 } else { |
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162 __ leaq(rdx, obj); |
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163 __ store_check(rdx); |
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164 } |
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165 } |
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166 } |
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167 break; |
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168 case BarrierSet::ModRef: |
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169 case BarrierSet::Other: |
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170 if (val == noreg) { |
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171 __ store_heap_oop(obj, NULL_WORD); |
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172 } else { |
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173 __ store_heap_oop(obj, val); |
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174 } |
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175 break; |
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176 default : |
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177 ShouldNotReachHere(); |
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178 |
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179 } |
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180 } |
0 | 181 |
182 Address TemplateTable::at_bcp(int offset) { | |
183 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
184 return Address(r13, offset); | |
185 } | |
186 | |
187 void TemplateTable::patch_bytecode(Bytecodes::Code bytecode, Register bc, | |
188 Register scratch, | |
189 bool load_bc_into_scratch/*=true*/) { | |
190 if (!RewriteBytecodes) { | |
191 return; | |
192 } | |
193 // the pair bytecodes have already done the load. | |
194 if (load_bc_into_scratch) { | |
195 __ movl(bc, bytecode); | |
196 } | |
197 Label patch_done; | |
198 if (JvmtiExport::can_post_breakpoint()) { | |
199 Label fast_patch; | |
200 // if a breakpoint is present we can't rewrite the stream directly | |
201 __ movzbl(scratch, at_bcp(0)); | |
202 __ cmpl(scratch, Bytecodes::_breakpoint); | |
203 __ jcc(Assembler::notEqual, fast_patch); | |
204 __ get_method(scratch); | |
205 // Let breakpoint table handling rewrite to quicker bytecode | |
206 __ call_VM(noreg, | |
207 CAST_FROM_FN_PTR(address, | |
208 InterpreterRuntime::set_original_bytecode_at), | |
209 scratch, r13, bc); | |
210 #ifndef ASSERT | |
211 __ jmpb(patch_done); | |
212 __ bind(fast_patch); | |
213 } | |
214 #else | |
215 __ jmp(patch_done); | |
216 __ bind(fast_patch); | |
217 } | |
218 Label okay; | |
219 __ load_unsigned_byte(scratch, at_bcp(0)); | |
220 __ cmpl(scratch, (int) Bytecodes::java_code(bytecode)); | |
221 __ jcc(Assembler::equal, okay); | |
222 __ cmpl(scratch, bc); | |
223 __ jcc(Assembler::equal, okay); | |
224 __ stop("patching the wrong bytecode"); | |
225 __ bind(okay); | |
226 #endif | |
227 // patch bytecode | |
228 __ movb(at_bcp(0), bc); | |
229 __ bind(patch_done); | |
230 } | |
231 | |
232 | |
233 // Individual instructions | |
234 | |
235 void TemplateTable::nop() { | |
236 transition(vtos, vtos); | |
237 // nothing to do | |
238 } | |
239 | |
240 void TemplateTable::shouldnotreachhere() { | |
241 transition(vtos, vtos); | |
242 __ stop("shouldnotreachhere bytecode"); | |
243 } | |
244 | |
245 void TemplateTable::aconst_null() { | |
246 transition(vtos, atos); | |
247 __ xorl(rax, rax); | |
248 } | |
249 | |
250 void TemplateTable::iconst(int value) { | |
251 transition(vtos, itos); | |
252 if (value == 0) { | |
253 __ xorl(rax, rax); | |
254 } else { | |
255 __ movl(rax, value); | |
256 } | |
257 } | |
258 | |
259 void TemplateTable::lconst(int value) { | |
260 transition(vtos, ltos); | |
261 if (value == 0) { | |
262 __ xorl(rax, rax); | |
263 } else { | |
264 __ movl(rax, value); | |
265 } | |
266 } | |
267 | |
268 void TemplateTable::fconst(int value) { | |
269 transition(vtos, ftos); | |
270 static float one = 1.0f, two = 2.0f; | |
271 switch (value) { | |
272 case 0: | |
273 __ xorps(xmm0, xmm0); | |
274 break; | |
275 case 1: | |
276 __ movflt(xmm0, ExternalAddress((address) &one)); | |
277 break; | |
278 case 2: | |
279 __ movflt(xmm0, ExternalAddress((address) &two)); | |
280 break; | |
281 default: | |
282 ShouldNotReachHere(); | |
283 break; | |
284 } | |
285 } | |
286 | |
287 void TemplateTable::dconst(int value) { | |
288 transition(vtos, dtos); | |
289 static double one = 1.0; | |
290 switch (value) { | |
291 case 0: | |
292 __ xorpd(xmm0, xmm0); | |
293 break; | |
294 case 1: | |
295 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
296 break; | |
297 default: | |
298 ShouldNotReachHere(); | |
299 break; | |
300 } | |
301 } | |
302 | |
303 void TemplateTable::bipush() { | |
304 transition(vtos, itos); | |
305 __ load_signed_byte(rax, at_bcp(1)); | |
306 } | |
307 | |
308 void TemplateTable::sipush() { | |
309 transition(vtos, itos); | |
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310 __ load_unsigned_short(rax, at_bcp(1)); |
0 | 311 __ bswapl(rax); |
312 __ sarl(rax, 16); | |
313 } | |
314 | |
315 void TemplateTable::ldc(bool wide) { | |
316 transition(vtos, vtos); | |
317 Label call_ldc, notFloat, notClass, Done; | |
318 | |
319 if (wide) { | |
320 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
321 } else { | |
322 __ load_unsigned_byte(rbx, at_bcp(1)); | |
323 } | |
324 | |
325 __ get_cpool_and_tags(rcx, rax); | |
326 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
327 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
328 | |
329 // get type | |
330 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
331 | |
332 // unresolved string - get the resolved string | |
333 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
334 __ jccb(Assembler::equal, call_ldc); | |
335 | |
336 // unresolved class - get the resolved class | |
337 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
338 __ jccb(Assembler::equal, call_ldc); | |
339 | |
340 // unresolved class in error state - call into runtime to throw the error | |
341 // from the first resolution attempt | |
342 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
343 __ jccb(Assembler::equal, call_ldc); | |
344 | |
345 // resolved class - need to call vm to get java mirror of the class | |
346 __ cmpl(rdx, JVM_CONSTANT_Class); | |
347 __ jcc(Assembler::notEqual, notClass); | |
348 | |
349 __ bind(call_ldc); | |
350 __ movl(c_rarg1, wide); | |
351 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
352 __ push_ptr(rax); | |
353 __ verify_oop(rax); | |
354 __ jmp(Done); | |
355 | |
356 __ bind(notClass); | |
357 __ cmpl(rdx, JVM_CONSTANT_Float); | |
358 __ jccb(Assembler::notEqual, notFloat); | |
359 // ftos | |
360 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
361 __ push_f(); | |
362 __ jmp(Done); | |
363 | |
364 __ bind(notFloat); | |
365 #ifdef ASSERT | |
366 { | |
367 Label L; | |
368 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
369 __ jcc(Assembler::equal, L); | |
370 __ cmpl(rdx, JVM_CONSTANT_String); | |
371 __ jcc(Assembler::equal, L); | |
372 __ stop("unexpected tag type in ldc"); | |
373 __ bind(L); | |
374 } | |
375 #endif | |
376 // atos and itos | |
377 Label isOop; | |
378 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
379 __ jcc(Assembler::notEqual, isOop); | |
380 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
381 __ push_i(rax); | |
382 __ jmp(Done); | |
383 | |
384 __ bind(isOop); | |
304 | 385 __ movptr(rax, Address(rcx, rbx, Address::times_8, base_offset)); |
0 | 386 __ push_ptr(rax); |
387 | |
388 if (VerifyOops) { | |
389 __ verify_oop(rax); | |
390 } | |
391 | |
392 __ bind(Done); | |
393 } | |
394 | |
395 void TemplateTable::ldc2_w() { | |
396 transition(vtos, vtos); | |
397 Label Long, Done; | |
398 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
399 | |
400 __ get_cpool_and_tags(rcx, rax); | |
401 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
402 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
403 | |
404 // get type | |
405 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
406 JVM_CONSTANT_Double); | |
407 __ jccb(Assembler::notEqual, Long); | |
408 // dtos | |
409 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
410 __ push_d(); | |
411 __ jmpb(Done); | |
412 | |
413 __ bind(Long); | |
414 // ltos | |
415 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
416 __ push_l(); | |
417 | |
418 __ bind(Done); | |
419 } | |
420 | |
421 void TemplateTable::locals_index(Register reg, int offset) { | |
422 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 423 __ negptr(reg); |
424 if (TaggedStackInterpreter) __ shlptr(reg, 1); // index = index*2 | |
0 | 425 } |
426 | |
427 void TemplateTable::iload() { | |
428 transition(vtos, itos); | |
429 if (RewriteFrequentPairs) { | |
430 Label rewrite, done; | |
431 const Register bc = c_rarg3; | |
432 assert(rbx != bc, "register damaged"); | |
433 | |
434 // get next byte | |
435 __ load_unsigned_byte(rbx, | |
436 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
437 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
438 // last two iloads in a pair. Comparing against fast_iload means that | |
439 // the next bytecode is neither an iload or a caload, and therefore | |
440 // an iload pair. | |
441 __ cmpl(rbx, Bytecodes::_iload); | |
442 __ jcc(Assembler::equal, done); | |
443 | |
444 __ cmpl(rbx, Bytecodes::_fast_iload); | |
445 __ movl(bc, Bytecodes::_fast_iload2); | |
446 __ jccb(Assembler::equal, rewrite); | |
447 | |
448 // if _caload, rewrite to fast_icaload | |
449 __ cmpl(rbx, Bytecodes::_caload); | |
450 __ movl(bc, Bytecodes::_fast_icaload); | |
451 __ jccb(Assembler::equal, rewrite); | |
452 | |
453 // rewrite so iload doesn't check again. | |
454 __ movl(bc, Bytecodes::_fast_iload); | |
455 | |
456 // rewrite | |
457 // bc: fast bytecode | |
458 __ bind(rewrite); | |
459 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
460 __ bind(done); | |
461 } | |
462 | |
463 // Get the local value into tos | |
464 locals_index(rbx); | |
465 __ movl(rax, iaddress(rbx)); | |
466 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
467 } | |
468 | |
469 void TemplateTable::fast_iload2() { | |
470 transition(vtos, itos); | |
471 locals_index(rbx); | |
472 __ movl(rax, iaddress(rbx)); | |
473 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
474 __ push(itos); | |
475 locals_index(rbx, 3); | |
476 __ movl(rax, iaddress(rbx)); | |
477 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
478 } | |
479 | |
480 void TemplateTable::fast_iload() { | |
481 transition(vtos, itos); | |
482 locals_index(rbx); | |
483 __ movl(rax, iaddress(rbx)); | |
484 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
485 } | |
486 | |
487 void TemplateTable::lload() { | |
488 transition(vtos, ltos); | |
489 locals_index(rbx); | |
490 __ movq(rax, laddress(rbx)); | |
491 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
492 } | |
493 | |
494 void TemplateTable::fload() { | |
495 transition(vtos, ftos); | |
496 locals_index(rbx); | |
497 __ movflt(xmm0, faddress(rbx)); | |
498 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
499 } | |
500 | |
501 void TemplateTable::dload() { | |
502 transition(vtos, dtos); | |
503 locals_index(rbx); | |
504 __ movdbl(xmm0, daddress(rbx)); | |
505 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
506 } | |
507 | |
508 void TemplateTable::aload() { | |
509 transition(vtos, atos); | |
510 locals_index(rbx); | |
304 | 511 __ movptr(rax, aaddress(rbx)); |
0 | 512 debug_only(__ verify_local_tag(frame::TagReference, rbx)); |
513 } | |
514 | |
515 void TemplateTable::locals_index_wide(Register reg) { | |
516 __ movl(reg, at_bcp(2)); | |
517 __ bswapl(reg); | |
518 __ shrl(reg, 16); | |
304 | 519 __ negptr(reg); |
520 if (TaggedStackInterpreter) __ shlptr(reg, 1); // index = index*2 | |
0 | 521 } |
522 | |
523 void TemplateTable::wide_iload() { | |
524 transition(vtos, itos); | |
525 locals_index_wide(rbx); | |
526 __ movl(rax, iaddress(rbx)); | |
527 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
528 } | |
529 | |
530 void TemplateTable::wide_lload() { | |
531 transition(vtos, ltos); | |
532 locals_index_wide(rbx); | |
533 __ movq(rax, laddress(rbx)); | |
534 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
535 } | |
536 | |
537 void TemplateTable::wide_fload() { | |
538 transition(vtos, ftos); | |
539 locals_index_wide(rbx); | |
540 __ movflt(xmm0, faddress(rbx)); | |
541 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
542 } | |
543 | |
544 void TemplateTable::wide_dload() { | |
545 transition(vtos, dtos); | |
546 locals_index_wide(rbx); | |
547 __ movdbl(xmm0, daddress(rbx)); | |
548 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
549 } | |
550 | |
551 void TemplateTable::wide_aload() { | |
552 transition(vtos, atos); | |
553 locals_index_wide(rbx); | |
304 | 554 __ movptr(rax, aaddress(rbx)); |
0 | 555 debug_only(__ verify_local_tag(frame::TagReference, rbx)); |
556 } | |
557 | |
558 void TemplateTable::index_check(Register array, Register index) { | |
559 // destroys rbx | |
560 // check array | |
561 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
562 // sign extend index for use by indexed load | |
304 | 563 __ movl2ptr(index, index); |
0 | 564 // check index |
565 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
566 if (index != rbx) { | |
567 // ??? convention: move aberrant index into ebx for exception message | |
568 assert(rbx != array, "different registers"); | |
569 __ movl(rbx, index); | |
570 } | |
571 __ jump_cc(Assembler::aboveEqual, | |
572 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
573 } | |
574 | |
575 void TemplateTable::iaload() { | |
576 transition(itos, itos); | |
577 __ pop_ptr(rdx); | |
578 // eax: index | |
579 // rdx: array | |
580 index_check(rdx, rax); // kills rbx | |
581 __ movl(rax, Address(rdx, rax, | |
582 Address::times_4, | |
583 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
584 } | |
585 | |
586 void TemplateTable::laload() { | |
587 transition(itos, ltos); | |
588 __ pop_ptr(rdx); | |
589 // eax: index | |
590 // rdx: array | |
591 index_check(rdx, rax); // kills rbx | |
592 __ movq(rax, Address(rdx, rbx, | |
593 Address::times_8, | |
594 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
595 } | |
596 | |
597 void TemplateTable::faload() { | |
598 transition(itos, ftos); | |
599 __ pop_ptr(rdx); | |
600 // eax: index | |
601 // rdx: array | |
602 index_check(rdx, rax); // kills rbx | |
603 __ movflt(xmm0, Address(rdx, rax, | |
604 Address::times_4, | |
605 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
606 } | |
607 | |
608 void TemplateTable::daload() { | |
609 transition(itos, dtos); | |
610 __ pop_ptr(rdx); | |
611 // eax: index | |
612 // rdx: array | |
613 index_check(rdx, rax); // kills rbx | |
614 __ movdbl(xmm0, Address(rdx, rax, | |
615 Address::times_8, | |
616 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
617 } | |
618 | |
619 void TemplateTable::aaload() { | |
620 transition(itos, atos); | |
621 __ pop_ptr(rdx); | |
622 // eax: index | |
623 // rdx: array | |
624 index_check(rdx, rax); // kills rbx | |
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625 __ load_heap_oop(rax, Address(rdx, rax, |
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626 UseCompressedOops ? Address::times_4 : Address::times_8, |
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627 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 628 } |
629 | |
630 void TemplateTable::baload() { | |
631 transition(itos, itos); | |
632 __ pop_ptr(rdx); | |
633 // eax: index | |
634 // rdx: array | |
635 index_check(rdx, rax); // kills rbx | |
636 __ load_signed_byte(rax, | |
637 Address(rdx, rax, | |
638 Address::times_1, | |
639 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
640 } | |
641 | |
642 void TemplateTable::caload() { | |
643 transition(itos, itos); | |
644 __ pop_ptr(rdx); | |
645 // eax: index | |
646 // rdx: array | |
647 index_check(rdx, rax); // kills rbx | |
622
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648 __ load_unsigned_short(rax, |
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649 Address(rdx, rax, |
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650 Address::times_2, |
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651 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 652 } |
653 | |
654 // iload followed by caload frequent pair | |
655 void TemplateTable::fast_icaload() { | |
656 transition(vtos, itos); | |
657 // load index out of locals | |
658 locals_index(rbx); | |
659 __ movl(rax, iaddress(rbx)); | |
660 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
661 | |
662 // eax: index | |
663 // rdx: array | |
664 __ pop_ptr(rdx); | |
665 index_check(rdx, rax); // kills rbx | |
622
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666 __ load_unsigned_short(rax, |
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667 Address(rdx, rax, |
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668 Address::times_2, |
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669 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 670 } |
671 | |
672 void TemplateTable::saload() { | |
673 transition(itos, itos); | |
674 __ pop_ptr(rdx); | |
675 // eax: index | |
676 // rdx: array | |
677 index_check(rdx, rax); // kills rbx | |
622
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678 __ load_signed_short(rax, |
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679 Address(rdx, rax, |
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680 Address::times_2, |
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681 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 682 } |
683 | |
684 void TemplateTable::iload(int n) { | |
685 transition(vtos, itos); | |
686 __ movl(rax, iaddress(n)); | |
687 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
688 } | |
689 | |
690 void TemplateTable::lload(int n) { | |
691 transition(vtos, ltos); | |
692 __ movq(rax, laddress(n)); | |
693 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
694 } | |
695 | |
696 void TemplateTable::fload(int n) { | |
697 transition(vtos, ftos); | |
698 __ movflt(xmm0, faddress(n)); | |
699 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
700 } | |
701 | |
702 void TemplateTable::dload(int n) { | |
703 transition(vtos, dtos); | |
704 __ movdbl(xmm0, daddress(n)); | |
705 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
706 } | |
707 | |
708 void TemplateTable::aload(int n) { | |
709 transition(vtos, atos); | |
304 | 710 __ movptr(rax, aaddress(n)); |
0 | 711 debug_only(__ verify_local_tag(frame::TagReference, n)); |
712 } | |
713 | |
714 void TemplateTable::aload_0() { | |
715 transition(vtos, atos); | |
716 // According to bytecode histograms, the pairs: | |
717 // | |
718 // _aload_0, _fast_igetfield | |
719 // _aload_0, _fast_agetfield | |
720 // _aload_0, _fast_fgetfield | |
721 // | |
722 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
723 // _aload_0 bytecode checks if the next bytecode is either | |
724 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
725 // rewrites the current bytecode into a pair bytecode; otherwise it | |
726 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
727 // the pair check anymore. | |
728 // | |
729 // Note: If the next bytecode is _getfield, the rewrite must be | |
730 // delayed, otherwise we may miss an opportunity for a pair. | |
731 // | |
732 // Also rewrite frequent pairs | |
733 // aload_0, aload_1 | |
734 // aload_0, iload_1 | |
735 // These bytecodes with a small amount of code are most profitable | |
736 // to rewrite | |
737 if (RewriteFrequentPairs) { | |
738 Label rewrite, done; | |
739 const Register bc = c_rarg3; | |
740 assert(rbx != bc, "register damaged"); | |
741 // get next byte | |
742 __ load_unsigned_byte(rbx, | |
743 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
744 | |
745 // do actual aload_0 | |
746 aload(0); | |
747 | |
748 // if _getfield then wait with rewrite | |
749 __ cmpl(rbx, Bytecodes::_getfield); | |
750 __ jcc(Assembler::equal, done); | |
751 | |
752 // if _igetfield then reqrite to _fast_iaccess_0 | |
753 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
754 Bytecodes::_aload_0, | |
755 "fix bytecode definition"); | |
756 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
757 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
758 __ jccb(Assembler::equal, rewrite); | |
759 | |
760 // if _agetfield then reqrite to _fast_aaccess_0 | |
761 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
762 Bytecodes::_aload_0, | |
763 "fix bytecode definition"); | |
764 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
765 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
766 __ jccb(Assembler::equal, rewrite); | |
767 | |
768 // if _fgetfield then reqrite to _fast_faccess_0 | |
769 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
770 Bytecodes::_aload_0, | |
771 "fix bytecode definition"); | |
772 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
773 __ movl(bc, Bytecodes::_fast_faccess_0); | |
774 __ jccb(Assembler::equal, rewrite); | |
775 | |
776 // else rewrite to _fast_aload0 | |
777 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
778 Bytecodes::_aload_0, | |
779 "fix bytecode definition"); | |
780 __ movl(bc, Bytecodes::_fast_aload_0); | |
781 | |
782 // rewrite | |
783 // bc: fast bytecode | |
784 __ bind(rewrite); | |
785 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
786 | |
787 __ bind(done); | |
788 } else { | |
789 aload(0); | |
790 } | |
791 } | |
792 | |
793 void TemplateTable::istore() { | |
794 transition(itos, vtos); | |
795 locals_index(rbx); | |
796 __ movl(iaddress(rbx), rax); | |
797 __ tag_local(frame::TagValue, rbx); | |
798 } | |
799 | |
800 void TemplateTable::lstore() { | |
801 transition(ltos, vtos); | |
802 locals_index(rbx); | |
803 __ movq(laddress(rbx), rax); | |
804 __ tag_local(frame::TagCategory2, rbx); | |
805 } | |
806 | |
807 void TemplateTable::fstore() { | |
808 transition(ftos, vtos); | |
809 locals_index(rbx); | |
810 __ movflt(faddress(rbx), xmm0); | |
811 __ tag_local(frame::TagValue, rbx); | |
812 } | |
813 | |
814 void TemplateTable::dstore() { | |
815 transition(dtos, vtos); | |
816 locals_index(rbx); | |
817 __ movdbl(daddress(rbx), xmm0); | |
818 __ tag_local(frame::TagCategory2, rbx); | |
819 } | |
820 | |
821 void TemplateTable::astore() { | |
822 transition(vtos, vtos); | |
823 __ pop_ptr(rax, rdx); // will need to pop tag too | |
824 locals_index(rbx); | |
304 | 825 __ movptr(aaddress(rbx), rax); |
0 | 826 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr |
827 } | |
828 | |
829 void TemplateTable::wide_istore() { | |
830 transition(vtos, vtos); | |
831 __ pop_i(); | |
832 locals_index_wide(rbx); | |
833 __ movl(iaddress(rbx), rax); | |
834 __ tag_local(frame::TagValue, rbx); | |
835 } | |
836 | |
837 void TemplateTable::wide_lstore() { | |
838 transition(vtos, vtos); | |
839 __ pop_l(); | |
840 locals_index_wide(rbx); | |
841 __ movq(laddress(rbx), rax); | |
842 __ tag_local(frame::TagCategory2, rbx); | |
843 } | |
844 | |
845 void TemplateTable::wide_fstore() { | |
846 transition(vtos, vtos); | |
847 __ pop_f(); | |
848 locals_index_wide(rbx); | |
849 __ movflt(faddress(rbx), xmm0); | |
850 __ tag_local(frame::TagValue, rbx); | |
851 } | |
852 | |
853 void TemplateTable::wide_dstore() { | |
854 transition(vtos, vtos); | |
855 __ pop_d(); | |
856 locals_index_wide(rbx); | |
857 __ movdbl(daddress(rbx), xmm0); | |
858 __ tag_local(frame::TagCategory2, rbx); | |
859 } | |
860 | |
861 void TemplateTable::wide_astore() { | |
862 transition(vtos, vtos); | |
863 __ pop_ptr(rax, rdx); // will need to pop tag too | |
864 locals_index_wide(rbx); | |
304 | 865 __ movptr(aaddress(rbx), rax); |
0 | 866 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr |
867 } | |
868 | |
869 void TemplateTable::iastore() { | |
870 transition(itos, vtos); | |
871 __ pop_i(rbx); | |
872 __ pop_ptr(rdx); | |
873 // eax: value | |
874 // ebx: index | |
875 // rdx: array | |
876 index_check(rdx, rbx); // prefer index in ebx | |
877 __ movl(Address(rdx, rbx, | |
878 Address::times_4, | |
879 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
880 rax); | |
881 } | |
882 | |
883 void TemplateTable::lastore() { | |
884 transition(ltos, vtos); | |
885 __ pop_i(rbx); | |
886 __ pop_ptr(rdx); | |
887 // rax: value | |
888 // ebx: index | |
889 // rdx: array | |
890 index_check(rdx, rbx); // prefer index in ebx | |
891 __ movq(Address(rdx, rbx, | |
892 Address::times_8, | |
893 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
894 rax); | |
895 } | |
896 | |
897 void TemplateTable::fastore() { | |
898 transition(ftos, vtos); | |
899 __ pop_i(rbx); | |
900 __ pop_ptr(rdx); | |
901 // xmm0: value | |
902 // ebx: index | |
903 // rdx: array | |
904 index_check(rdx, rbx); // prefer index in ebx | |
905 __ movflt(Address(rdx, rbx, | |
906 Address::times_4, | |
907 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
908 xmm0); | |
909 } | |
910 | |
911 void TemplateTable::dastore() { | |
912 transition(dtos, vtos); | |
913 __ pop_i(rbx); | |
914 __ pop_ptr(rdx); | |
915 // xmm0: value | |
916 // ebx: index | |
917 // rdx: array | |
918 index_check(rdx, rbx); // prefer index in ebx | |
919 __ movdbl(Address(rdx, rbx, | |
920 Address::times_8, | |
921 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
922 xmm0); | |
923 } | |
924 | |
925 void TemplateTable::aastore() { | |
926 Label is_null, ok_is_subtype, done; | |
927 transition(vtos, vtos); | |
928 // stack: ..., array, index, value | |
304 | 929 __ movptr(rax, at_tos()); // value |
0 | 930 __ movl(rcx, at_tos_p1()); // index |
304 | 931 __ movptr(rdx, at_tos_p2()); // array |
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932 |
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933 Address element_address(rdx, rcx, |
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934 UseCompressedOops? Address::times_4 : Address::times_8, |
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935 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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936 |
0 | 937 index_check(rdx, rcx); // kills rbx |
938 // do array store check - check for NULL value first | |
304 | 939 __ testptr(rax, rax); |
0 | 940 __ jcc(Assembler::zero, is_null); |
941 | |
942 // Move subklass into rbx | |
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943 __ load_klass(rbx, rax); |
0 | 944 // Move superklass into rax |
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945 __ load_klass(rax, rdx); |
304 | 946 __ movptr(rax, Address(rax, |
947 sizeof(oopDesc) + | |
948 objArrayKlass::element_klass_offset_in_bytes())); | |
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949 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 950 __ lea(rdx, element_address); |
0 | 951 |
952 // Generate subtype check. Blows rcx, rdi | |
953 // Superklass in rax. Subklass in rbx. | |
954 __ gen_subtype_check(rbx, ok_is_subtype); | |
955 | |
956 // Come here on failure | |
957 // object is at TOS | |
958 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
959 | |
960 // Come here on success | |
961 __ bind(ok_is_subtype); | |
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962 |
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963 // Get the value we will store |
362 | 964 __ movptr(rax, at_tos()); |
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965 // Now store using the appropriate barrier |
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966 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 967 __ jmp(done); |
968 | |
969 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
970 __ bind(is_null); | |
971 __ profile_null_seen(rbx); | |
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972 |
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973 // Store a NULL |
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974 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 975 |
976 // Pop stack arguments | |
977 __ bind(done); | |
304 | 978 __ addptr(rsp, 3 * Interpreter::stackElementSize()); |
0 | 979 } |
980 | |
981 void TemplateTable::bastore() { | |
982 transition(itos, vtos); | |
983 __ pop_i(rbx); | |
984 __ pop_ptr(rdx); | |
985 // eax: value | |
986 // ebx: index | |
987 // rdx: array | |
988 index_check(rdx, rbx); // prefer index in ebx | |
989 __ movb(Address(rdx, rbx, | |
990 Address::times_1, | |
991 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
992 rax); | |
993 } | |
994 | |
995 void TemplateTable::castore() { | |
996 transition(itos, vtos); | |
997 __ pop_i(rbx); | |
998 __ pop_ptr(rdx); | |
999 // eax: value | |
1000 // ebx: index | |
1001 // rdx: array | |
1002 index_check(rdx, rbx); // prefer index in ebx | |
1003 __ movw(Address(rdx, rbx, | |
1004 Address::times_2, | |
1005 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
1006 rax); | |
1007 } | |
1008 | |
1009 void TemplateTable::sastore() { | |
1010 castore(); | |
1011 } | |
1012 | |
1013 void TemplateTable::istore(int n) { | |
1014 transition(itos, vtos); | |
1015 __ movl(iaddress(n), rax); | |
1016 __ tag_local(frame::TagValue, n); | |
1017 } | |
1018 | |
1019 void TemplateTable::lstore(int n) { | |
1020 transition(ltos, vtos); | |
1021 __ movq(laddress(n), rax); | |
1022 __ tag_local(frame::TagCategory2, n); | |
1023 } | |
1024 | |
1025 void TemplateTable::fstore(int n) { | |
1026 transition(ftos, vtos); | |
1027 __ movflt(faddress(n), xmm0); | |
1028 __ tag_local(frame::TagValue, n); | |
1029 } | |
1030 | |
1031 void TemplateTable::dstore(int n) { | |
1032 transition(dtos, vtos); | |
1033 __ movdbl(daddress(n), xmm0); | |
1034 __ tag_local(frame::TagCategory2, n); | |
1035 } | |
1036 | |
1037 void TemplateTable::astore(int n) { | |
1038 transition(vtos, vtos); | |
1039 __ pop_ptr(rax, rdx); | |
304 | 1040 __ movptr(aaddress(n), rax); |
0 | 1041 __ tag_local(rdx, n); |
1042 } | |
1043 | |
1044 void TemplateTable::pop() { | |
1045 transition(vtos, vtos); | |
304 | 1046 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1047 } |
1048 | |
1049 void TemplateTable::pop2() { | |
1050 transition(vtos, vtos); | |
304 | 1051 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1052 } |
1053 | |
1054 void TemplateTable::dup() { | |
1055 transition(vtos, vtos); | |
1056 __ load_ptr_and_tag(0, rax, rdx); | |
1057 __ push_ptr(rax, rdx); | |
1058 // stack: ..., a, a | |
1059 } | |
1060 | |
1061 void TemplateTable::dup_x1() { | |
1062 transition(vtos, vtos); | |
1063 // stack: ..., a, b | |
1064 __ load_ptr_and_tag(0, rax, rdx); // load b | |
1065 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
1066 __ store_ptr_and_tag(1, rax, rdx); // store b | |
1067 __ store_ptr_and_tag(0, rcx, rbx); // store a | |
1068 __ push_ptr(rax, rdx); // push b | |
1069 // stack: ..., b, a, b | |
1070 } | |
1071 | |
1072 void TemplateTable::dup_x2() { | |
1073 transition(vtos, vtos); | |
1074 // stack: ..., a, b, c | |
1075 __ load_ptr_and_tag(0, rax, rdx); // load c | |
1076 __ load_ptr_and_tag(2, rcx, rbx); // load a | |
1077 __ store_ptr_and_tag(2, rax, rdx); // store c in a | |
1078 __ push_ptr(rax, rdx); // push c | |
1079 // stack: ..., c, b, c, c | |
1080 __ load_ptr_and_tag(2, rax, rdx); // load b | |
1081 __ store_ptr_and_tag(2, rcx, rbx); // store a in b | |
1082 // stack: ..., c, a, c, c | |
1083 __ store_ptr_and_tag(1, rax, rdx); // store b in c | |
1084 // stack: ..., c, a, b, c | |
1085 } | |
1086 | |
1087 void TemplateTable::dup2() { | |
1088 transition(vtos, vtos); | |
1089 // stack: ..., a, b | |
1090 __ load_ptr_and_tag(1, rax, rdx); // load a | |
1091 __ push_ptr(rax, rdx); // push a | |
1092 __ load_ptr_and_tag(1, rax, rdx); // load b | |
1093 __ push_ptr(rax, rdx); // push b | |
1094 // stack: ..., a, b, a, b | |
1095 } | |
1096 | |
1097 void TemplateTable::dup2_x1() { | |
1098 transition(vtos, vtos); | |
1099 // stack: ..., a, b, c | |
1100 __ load_ptr_and_tag(0, rcx, rbx); // load c | |
1101 __ load_ptr_and_tag(1, rax, rdx); // load b | |
1102 __ push_ptr(rax, rdx); // push b | |
1103 __ push_ptr(rcx, rbx); // push c | |
1104 // stack: ..., a, b, c, b, c | |
1105 __ store_ptr_and_tag(3, rcx, rbx); // store c in b | |
1106 // stack: ..., a, c, c, b, c | |
1107 __ load_ptr_and_tag(4, rcx, rbx); // load a | |
1108 __ store_ptr_and_tag(2, rcx, rbx); // store a in 2nd c | |
1109 // stack: ..., a, c, a, b, c | |
1110 __ store_ptr_and_tag(4, rax, rdx); // store b in a | |
1111 // stack: ..., b, c, a, b, c | |
1112 } | |
1113 | |
1114 void TemplateTable::dup2_x2() { | |
1115 transition(vtos, vtos); | |
1116 // stack: ..., a, b, c, d | |
1117 __ load_ptr_and_tag(0, rcx, rbx); // load d | |
1118 __ load_ptr_and_tag(1, rax, rdx); // load c | |
1119 __ push_ptr(rax, rdx); // push c | |
1120 __ push_ptr(rcx, rbx); // push d | |
1121 // stack: ..., a, b, c, d, c, d | |
1122 __ load_ptr_and_tag(4, rax, rdx); // load b | |
1123 __ store_ptr_and_tag(2, rax, rdx); // store b in d | |
1124 __ store_ptr_and_tag(4, rcx, rbx); // store d in b | |
1125 // stack: ..., a, d, c, b, c, d | |
1126 __ load_ptr_and_tag(5, rcx, rbx); // load a | |
1127 __ load_ptr_and_tag(3, rax, rdx); // load c | |
1128 __ store_ptr_and_tag(3, rcx, rbx); // store a in c | |
1129 __ store_ptr_and_tag(5, rax, rdx); // store c in a | |
1130 // stack: ..., c, d, a, b, c, d | |
1131 } | |
1132 | |
1133 void TemplateTable::swap() { | |
1134 transition(vtos, vtos); | |
1135 // stack: ..., a, b | |
1136 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
1137 __ load_ptr_and_tag(0, rax, rdx); // load b | |
1138 __ store_ptr_and_tag(0, rcx, rbx); // store a in b | |
1139 __ store_ptr_and_tag(1, rax, rdx); // store b in a | |
1140 // stack: ..., b, a | |
1141 } | |
1142 | |
1143 void TemplateTable::iop2(Operation op) { | |
1144 transition(itos, itos); | |
1145 switch (op) { | |
1146 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1147 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1148 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1149 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1150 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1151 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1152 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1153 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1154 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1155 default : ShouldNotReachHere(); | |
1156 } | |
1157 } | |
1158 | |
1159 void TemplateTable::lop2(Operation op) { | |
1160 transition(ltos, ltos); | |
1161 switch (op) { | |
304 | 1162 case add : __ pop_l(rdx); __ addptr (rax, rdx); break; |
1163 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr (rax, rdx); break; | |
1164 case _and : __ pop_l(rdx); __ andptr (rax, rdx); break; | |
1165 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1166 case _xor : __ pop_l(rdx); __ xorptr (rax, rdx); break; | |
0 | 1167 default : ShouldNotReachHere(); |
1168 } | |
1169 } | |
1170 | |
1171 void TemplateTable::idiv() { | |
1172 transition(itos, itos); | |
1173 __ movl(rcx, rax); | |
1174 __ pop_i(rax); | |
1175 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1176 // they are not equal, one could do a normal division (no correction | |
1177 // needed), which may speed up this implementation for the common case. | |
1178 // (see also JVM spec., p.243 & p.271) | |
1179 __ corrected_idivl(rcx); | |
1180 } | |
1181 | |
1182 void TemplateTable::irem() { | |
1183 transition(itos, itos); | |
1184 __ movl(rcx, rax); | |
1185 __ pop_i(rax); | |
1186 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1187 // they are not equal, one could do a normal division (no correction | |
1188 // needed), which may speed up this implementation for the common case. | |
1189 // (see also JVM spec., p.243 & p.271) | |
1190 __ corrected_idivl(rcx); | |
1191 __ movl(rax, rdx); | |
1192 } | |
1193 | |
1194 void TemplateTable::lmul() { | |
1195 transition(ltos, ltos); | |
1196 __ pop_l(rdx); | |
1197 __ imulq(rax, rdx); | |
1198 } | |
1199 | |
1200 void TemplateTable::ldiv() { | |
1201 transition(ltos, ltos); | |
304 | 1202 __ mov(rcx, rax); |
0 | 1203 __ pop_l(rax); |
1204 // generate explicit div0 check | |
1205 __ testq(rcx, rcx); | |
1206 __ jump_cc(Assembler::zero, | |
1207 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1208 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1209 // they are not equal, one could do a normal division (no correction | |
1210 // needed), which may speed up this implementation for the common case. | |
1211 // (see also JVM spec., p.243 & p.271) | |
1212 __ corrected_idivq(rcx); // kills rbx | |
1213 } | |
1214 | |
1215 void TemplateTable::lrem() { | |
1216 transition(ltos, ltos); | |
304 | 1217 __ mov(rcx, rax); |
0 | 1218 __ pop_l(rax); |
1219 __ testq(rcx, rcx); | |
1220 __ jump_cc(Assembler::zero, | |
1221 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1222 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1223 // they are not equal, one could do a normal division (no correction | |
1224 // needed), which may speed up this implementation for the common case. | |
1225 // (see also JVM spec., p.243 & p.271) | |
1226 __ corrected_idivq(rcx); // kills rbx | |
304 | 1227 __ mov(rax, rdx); |
0 | 1228 } |
1229 | |
1230 void TemplateTable::lshl() { | |
1231 transition(itos, ltos); | |
1232 __ movl(rcx, rax); // get shift count | |
1233 __ pop_l(rax); // get shift value | |
1234 __ shlq(rax); | |
1235 } | |
1236 | |
1237 void TemplateTable::lshr() { | |
1238 transition(itos, ltos); | |
1239 __ movl(rcx, rax); // get shift count | |
1240 __ pop_l(rax); // get shift value | |
1241 __ sarq(rax); | |
1242 } | |
1243 | |
1244 void TemplateTable::lushr() { | |
1245 transition(itos, ltos); | |
1246 __ movl(rcx, rax); // get shift count | |
1247 __ pop_l(rax); // get shift value | |
1248 __ shrq(rax); | |
1249 } | |
1250 | |
1251 void TemplateTable::fop2(Operation op) { | |
1252 transition(ftos, ftos); | |
1253 switch (op) { | |
1254 case add: | |
1255 __ addss(xmm0, at_rsp()); | |
304 | 1256 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1257 break; |
1258 case sub: | |
1259 __ movflt(xmm1, xmm0); | |
1260 __ pop_f(xmm0); | |
1261 __ subss(xmm0, xmm1); | |
1262 break; | |
1263 case mul: | |
1264 __ mulss(xmm0, at_rsp()); | |
304 | 1265 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1266 break; |
1267 case div: | |
1268 __ movflt(xmm1, xmm0); | |
1269 __ pop_f(xmm0); | |
1270 __ divss(xmm0, xmm1); | |
1271 break; | |
1272 case rem: | |
1273 __ movflt(xmm1, xmm0); | |
1274 __ pop_f(xmm0); | |
1275 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1276 break; | |
1277 default: | |
1278 ShouldNotReachHere(); | |
1279 break; | |
1280 } | |
1281 } | |
1282 | |
1283 void TemplateTable::dop2(Operation op) { | |
1284 transition(dtos, dtos); | |
1285 switch (op) { | |
1286 case add: | |
1287 __ addsd(xmm0, at_rsp()); | |
304 | 1288 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1289 break; |
1290 case sub: | |
1291 __ movdbl(xmm1, xmm0); | |
1292 __ pop_d(xmm0); | |
1293 __ subsd(xmm0, xmm1); | |
1294 break; | |
1295 case mul: | |
1296 __ mulsd(xmm0, at_rsp()); | |
304 | 1297 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1298 break; |
1299 case div: | |
1300 __ movdbl(xmm1, xmm0); | |
1301 __ pop_d(xmm0); | |
1302 __ divsd(xmm0, xmm1); | |
1303 break; | |
1304 case rem: | |
1305 __ movdbl(xmm1, xmm0); | |
1306 __ pop_d(xmm0); | |
1307 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1308 break; | |
1309 default: | |
1310 ShouldNotReachHere(); | |
1311 break; | |
1312 } | |
1313 } | |
1314 | |
1315 void TemplateTable::ineg() { | |
1316 transition(itos, itos); | |
1317 __ negl(rax); | |
1318 } | |
1319 | |
1320 void TemplateTable::lneg() { | |
1321 transition(ltos, ltos); | |
1322 __ negq(rax); | |
1323 } | |
1324 | |
1325 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1326 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1327 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1328 // of 128-bits operands for SSE instructions. | |
1329 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1330 // Store the value to a 128-bits operand. | |
1331 operand[0] = lo; | |
1332 operand[1] = hi; | |
1333 return operand; | |
1334 } | |
1335 | |
1336 // Buffer for 128-bits masks used by SSE instructions. | |
1337 static jlong float_signflip_pool[2*2]; | |
1338 static jlong double_signflip_pool[2*2]; | |
1339 | |
1340 void TemplateTable::fneg() { | |
1341 transition(ftos, ftos); | |
1342 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1343 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1344 } | |
1345 | |
1346 void TemplateTable::dneg() { | |
1347 transition(dtos, dtos); | |
1348 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1349 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1350 } | |
1351 | |
1352 void TemplateTable::iinc() { | |
1353 transition(vtos, vtos); | |
1354 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1355 locals_index(rbx); | |
1356 __ addl(iaddress(rbx), rdx); | |
1357 } | |
1358 | |
1359 void TemplateTable::wide_iinc() { | |
1360 transition(vtos, vtos); | |
1361 __ movl(rdx, at_bcp(4)); // get constant | |
1362 locals_index_wide(rbx); | |
1363 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1364 __ sarl(rdx, 16); | |
1365 __ addl(iaddress(rbx), rdx); | |
1366 // Note: should probably use only one movl to get both | |
1367 // the index and the constant -> fix this | |
1368 } | |
1369 | |
1370 void TemplateTable::convert() { | |
1371 // Checking | |
1372 #ifdef ASSERT | |
1373 { | |
1374 TosState tos_in = ilgl; | |
1375 TosState tos_out = ilgl; | |
1376 switch (bytecode()) { | |
1377 case Bytecodes::_i2l: // fall through | |
1378 case Bytecodes::_i2f: // fall through | |
1379 case Bytecodes::_i2d: // fall through | |
1380 case Bytecodes::_i2b: // fall through | |
1381 case Bytecodes::_i2c: // fall through | |
1382 case Bytecodes::_i2s: tos_in = itos; break; | |
1383 case Bytecodes::_l2i: // fall through | |
1384 case Bytecodes::_l2f: // fall through | |
1385 case Bytecodes::_l2d: tos_in = ltos; break; | |
1386 case Bytecodes::_f2i: // fall through | |
1387 case Bytecodes::_f2l: // fall through | |
1388 case Bytecodes::_f2d: tos_in = ftos; break; | |
1389 case Bytecodes::_d2i: // fall through | |
1390 case Bytecodes::_d2l: // fall through | |
1391 case Bytecodes::_d2f: tos_in = dtos; break; | |
1392 default : ShouldNotReachHere(); | |
1393 } | |
1394 switch (bytecode()) { | |
1395 case Bytecodes::_l2i: // fall through | |
1396 case Bytecodes::_f2i: // fall through | |
1397 case Bytecodes::_d2i: // fall through | |
1398 case Bytecodes::_i2b: // fall through | |
1399 case Bytecodes::_i2c: // fall through | |
1400 case Bytecodes::_i2s: tos_out = itos; break; | |
1401 case Bytecodes::_i2l: // fall through | |
1402 case Bytecodes::_f2l: // fall through | |
1403 case Bytecodes::_d2l: tos_out = ltos; break; | |
1404 case Bytecodes::_i2f: // fall through | |
1405 case Bytecodes::_l2f: // fall through | |
1406 case Bytecodes::_d2f: tos_out = ftos; break; | |
1407 case Bytecodes::_i2d: // fall through | |
1408 case Bytecodes::_l2d: // fall through | |
1409 case Bytecodes::_f2d: tos_out = dtos; break; | |
1410 default : ShouldNotReachHere(); | |
1411 } | |
1412 transition(tos_in, tos_out); | |
1413 } | |
1414 #endif // ASSERT | |
1415 | |
1416 static const int64_t is_nan = 0x8000000000000000L; | |
1417 | |
1418 // Conversion | |
1419 switch (bytecode()) { | |
1420 case Bytecodes::_i2l: | |
1421 __ movslq(rax, rax); | |
1422 break; | |
1423 case Bytecodes::_i2f: | |
1424 __ cvtsi2ssl(xmm0, rax); | |
1425 break; | |
1426 case Bytecodes::_i2d: | |
1427 __ cvtsi2sdl(xmm0, rax); | |
1428 break; | |
1429 case Bytecodes::_i2b: | |
1430 __ movsbl(rax, rax); | |
1431 break; | |
1432 case Bytecodes::_i2c: | |
1433 __ movzwl(rax, rax); | |
1434 break; | |
1435 case Bytecodes::_i2s: | |
1436 __ movswl(rax, rax); | |
1437 break; | |
1438 case Bytecodes::_l2i: | |
1439 __ movl(rax, rax); | |
1440 break; | |
1441 case Bytecodes::_l2f: | |
1442 __ cvtsi2ssq(xmm0, rax); | |
1443 break; | |
1444 case Bytecodes::_l2d: | |
1445 __ cvtsi2sdq(xmm0, rax); | |
1446 break; | |
1447 case Bytecodes::_f2i: | |
1448 { | |
1449 Label L; | |
1450 __ cvttss2sil(rax, xmm0); | |
1451 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1452 __ jcc(Assembler::notEqual, L); | |
1453 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1454 __ bind(L); | |
1455 } | |
1456 break; | |
1457 case Bytecodes::_f2l: | |
1458 { | |
1459 Label L; | |
1460 __ cvttss2siq(rax, xmm0); | |
1461 // NaN or overflow/underflow? | |
1462 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1463 __ jcc(Assembler::notEqual, L); | |
1464 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1465 __ bind(L); | |
1466 } | |
1467 break; | |
1468 case Bytecodes::_f2d: | |
1469 __ cvtss2sd(xmm0, xmm0); | |
1470 break; | |
1471 case Bytecodes::_d2i: | |
1472 { | |
1473 Label L; | |
1474 __ cvttsd2sil(rax, xmm0); | |
1475 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1476 __ jcc(Assembler::notEqual, L); | |
1477 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1478 __ bind(L); | |
1479 } | |
1480 break; | |
1481 case Bytecodes::_d2l: | |
1482 { | |
1483 Label L; | |
1484 __ cvttsd2siq(rax, xmm0); | |
1485 // NaN or overflow/underflow? | |
1486 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1487 __ jcc(Assembler::notEqual, L); | |
1488 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1489 __ bind(L); | |
1490 } | |
1491 break; | |
1492 case Bytecodes::_d2f: | |
1493 __ cvtsd2ss(xmm0, xmm0); | |
1494 break; | |
1495 default: | |
1496 ShouldNotReachHere(); | |
1497 } | |
1498 } | |
1499 | |
1500 void TemplateTable::lcmp() { | |
1501 transition(ltos, itos); | |
1502 Label done; | |
1503 __ pop_l(rdx); | |
1504 __ cmpq(rdx, rax); | |
1505 __ movl(rax, -1); | |
1506 __ jccb(Assembler::less, done); | |
1507 __ setb(Assembler::notEqual, rax); | |
1508 __ movzbl(rax, rax); | |
1509 __ bind(done); | |
1510 } | |
1511 | |
1512 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1513 Label done; | |
1514 if (is_float) { | |
1515 // XXX get rid of pop here, use ... reg, mem32 | |
1516 __ pop_f(xmm1); | |
1517 __ ucomiss(xmm1, xmm0); | |
1518 } else { | |
1519 // XXX get rid of pop here, use ... reg, mem64 | |
1520 __ pop_d(xmm1); | |
1521 __ ucomisd(xmm1, xmm0); | |
1522 } | |
1523 if (unordered_result < 0) { | |
1524 __ movl(rax, -1); | |
1525 __ jccb(Assembler::parity, done); | |
1526 __ jccb(Assembler::below, done); | |
1527 __ setb(Assembler::notEqual, rdx); | |
1528 __ movzbl(rax, rdx); | |
1529 } else { | |
1530 __ movl(rax, 1); | |
1531 __ jccb(Assembler::parity, done); | |
1532 __ jccb(Assembler::above, done); | |
1533 __ movl(rax, 0); | |
1534 __ jccb(Assembler::equal, done); | |
1535 __ decrementl(rax); | |
1536 } | |
1537 __ bind(done); | |
1538 } | |
1539 | |
1540 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1541 __ get_method(rcx); // rcx holds method | |
1542 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1543 // holds bumped taken count | |
1544 | |
1545 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
1546 InvocationCounter::counter_offset(); | |
1547 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
1548 InvocationCounter::counter_offset(); | |
1549 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1550 | |
1551 // Load up edx with the branch displacement | |
1552 __ movl(rdx, at_bcp(1)); | |
1553 __ bswapl(rdx); | |
1554 | |
1555 if (!is_wide) { | |
1556 __ sarl(rdx, 16); | |
1557 } | |
304 | 1558 __ movl2ptr(rdx, rdx); |
0 | 1559 |
1560 // Handle all the JSR stuff here, then exit. | |
1561 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1562 // normal-branch stuff occurring below. |
0 | 1563 if (is_jsr) { |
1564 // Pre-load the next target bytecode into rbx | |
1565 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1566 | |
1567 // compute return address as bci in rax | |
304 | 1568 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
0 | 1569 in_bytes(constMethodOopDesc::codes_offset()))); |
304 | 1570 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); |
0 | 1571 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1572 __ addptr(r13, rdx); |
0 | 1573 // jsr returns atos that is not an oop |
1574 __ push_i(rax); | |
1575 __ dispatch_only(vtos); | |
1576 return; | |
1577 } | |
1578 | |
1579 // Normal (non-jsr) branch handling | |
1580 | |
1581 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1582 __ addptr(r13, rdx); |
0 | 1583 |
1584 assert(UseLoopCounter || !UseOnStackReplacement, | |
1585 "on-stack-replacement requires loop counters"); | |
1586 Label backedge_counter_overflow; | |
1587 Label profile_method; | |
1588 Label dispatch; | |
1589 if (UseLoopCounter) { | |
1590 // increment backedge counter for backward branches | |
1591 // rax: MDO | |
1592 // ebx: MDO bumped taken-count | |
1593 // rcx: method | |
1594 // rdx: target offset | |
1595 // r13: target bcp | |
1596 // r14: locals pointer | |
1597 __ testl(rdx, rdx); // check if forward or backward branch | |
1598 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1599 | |
1600 // increment counter | |
1601 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1602 __ incrementl(rax, InvocationCounter::count_increment); // increment | |
1603 // counter | |
1604 __ movl(Address(rcx, be_offset), rax); // store counter | |
1605 | |
1606 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1607 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1608 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1609 | |
1610 if (ProfileInterpreter) { | |
1611 // Test to see if we should create a method data oop | |
1612 __ cmp32(rax, | |
1613 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); | |
1614 __ jcc(Assembler::less, dispatch); | |
1615 | |
1616 // if no method data exists, go to profile method | |
1617 __ test_method_data_pointer(rax, profile_method); | |
1618 | |
1619 if (UseOnStackReplacement) { | |
1620 // check for overflow against ebx which is the MDO taken count | |
1621 __ cmp32(rbx, | |
1622 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1623 __ jcc(Assembler::below, dispatch); | |
1624 | |
1625 // When ProfileInterpreter is on, the backedge_count comes | |
1626 // from the methodDataOop, which value does not get reset on | |
1627 // the call to frequency_counter_overflow(). To avoid | |
1628 // excessive calls to the overflow routine while the method is | |
1629 // being compiled, add a second test to make sure the overflow | |
1630 // function is called only once every overflow_frequency. | |
1631 const int overflow_frequency = 1024; | |
1632 __ andl(rbx, overflow_frequency - 1); | |
1633 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1634 | |
1635 } | |
1636 } else { | |
1637 if (UseOnStackReplacement) { | |
1638 // check for overflow against eax, which is the sum of the | |
1639 // counters | |
1640 __ cmp32(rax, | |
1641 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1642 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1643 | |
1644 } | |
1645 } | |
1646 __ bind(dispatch); | |
1647 } | |
1648 | |
1649 // Pre-load the next target bytecode into rbx | |
1650 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1651 | |
1652 // continue with the bytecode @ target | |
1653 // eax: return bci for jsr's, unused otherwise | |
1654 // ebx: target bytecode | |
1655 // r13: target bcp | |
1656 __ dispatch_only(vtos); | |
1657 | |
1658 if (UseLoopCounter) { | |
1659 if (ProfileInterpreter) { | |
1660 // Out-of-line code to allocate method data oop. | |
1661 __ bind(profile_method); | |
1662 __ call_VM(noreg, | |
1663 CAST_FROM_FN_PTR(address, | |
1664 InterpreterRuntime::profile_method), r13); | |
1665 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
304 | 1666 __ movptr(rcx, Address(rbp, method_offset)); |
1667 __ movptr(rcx, Address(rcx, | |
1668 in_bytes(methodOopDesc::method_data_offset()))); | |
1669 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1670 rcx); | |
0 | 1671 __ test_method_data_pointer(rcx, dispatch); |
1672 // offset non-null mdp by MDO::data_offset() + IR::profile_method() | |
304 | 1673 __ addptr(rcx, in_bytes(methodDataOopDesc::data_offset())); |
1674 __ addptr(rcx, rax); | |
1675 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1676 rcx); | |
0 | 1677 __ jmp(dispatch); |
1678 } | |
1679 | |
1680 if (UseOnStackReplacement) { | |
1681 // invocation counter overflow | |
1682 __ bind(backedge_counter_overflow); | |
304 | 1683 __ negptr(rdx); |
1684 __ addptr(rdx, r13); // branch bcp | |
0 | 1685 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1686 __ call_VM(noreg, | |
1687 CAST_FROM_FN_PTR(address, | |
1688 InterpreterRuntime::frequency_counter_overflow), | |
1689 rdx); | |
1690 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1691 | |
1692 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1693 // ebx: target bytecode | |
1694 // rdx: scratch | |
1695 // r14: locals pointer | |
1696 // r13: bcp | |
304 | 1697 __ testptr(rax, rax); // test result |
0 | 1698 __ jcc(Assembler::zero, dispatch); // no osr if null |
1699 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1700 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1701 __ cmpl(rcx, InvalidOSREntryBci); | |
1702 __ jcc(Assembler::equal, dispatch); | |
1703 | |
1704 // We have the address of an on stack replacement routine in eax | |
1705 // We need to prepare to execute the OSR method. First we must | |
1706 // migrate the locals and monitors off of the stack. | |
1707 | |
304 | 1708 __ mov(r13, rax); // save the nmethod |
0 | 1709 |
1710 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1711 | |
1712 // eax is OSR buffer, move it to expected parameter location | |
304 | 1713 __ mov(j_rarg0, rax); |
0 | 1714 |
1715 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1716 // registers change across platforms as we are in the midst of a calling | |
1717 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1718 | |
1719 const Register retaddr = j_rarg2; | |
1720 const Register sender_sp = j_rarg1; | |
1721 | |
1722 // pop the interpreter frame | |
304 | 1723 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1724 __ leave(); // remove frame anchor |
304 | 1725 __ pop(retaddr); // get return address |
1726 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1727 // Ensure compiled code always sees stack at proper alignment |
304 | 1728 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1729 |
1730 // unlike x86 we need no specialized return from compiled code | |
1731 // to the interpreter or the call stub. | |
1732 | |
1733 // push the return address | |
304 | 1734 __ push(retaddr); |
0 | 1735 |
1736 // and begin the OSR nmethod | |
1737 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1738 } | |
1739 } | |
1740 } | |
1741 | |
1742 | |
1743 void TemplateTable::if_0cmp(Condition cc) { | |
1744 transition(itos, vtos); | |
1745 // assume branch is more often taken than not (loops use backward branches) | |
1746 Label not_taken; | |
1747 __ testl(rax, rax); | |
1748 __ jcc(j_not(cc), not_taken); | |
1749 branch(false, false); | |
1750 __ bind(not_taken); | |
1751 __ profile_not_taken_branch(rax); | |
1752 } | |
1753 | |
1754 void TemplateTable::if_icmp(Condition cc) { | |
1755 transition(itos, vtos); | |
1756 // assume branch is more often taken than not (loops use backward branches) | |
1757 Label not_taken; | |
1758 __ pop_i(rdx); | |
1759 __ cmpl(rdx, rax); | |
1760 __ jcc(j_not(cc), not_taken); | |
1761 branch(false, false); | |
1762 __ bind(not_taken); | |
1763 __ profile_not_taken_branch(rax); | |
1764 } | |
1765 | |
1766 void TemplateTable::if_nullcmp(Condition cc) { | |
1767 transition(atos, vtos); | |
1768 // assume branch is more often taken than not (loops use backward branches) | |
1769 Label not_taken; | |
304 | 1770 __ testptr(rax, rax); |
0 | 1771 __ jcc(j_not(cc), not_taken); |
1772 branch(false, false); | |
1773 __ bind(not_taken); | |
1774 __ profile_not_taken_branch(rax); | |
1775 } | |
1776 | |
1777 void TemplateTable::if_acmp(Condition cc) { | |
1778 transition(atos, vtos); | |
1779 // assume branch is more often taken than not (loops use backward branches) | |
1780 Label not_taken; | |
1781 __ pop_ptr(rdx); | |
304 | 1782 __ cmpptr(rdx, rax); |
0 | 1783 __ jcc(j_not(cc), not_taken); |
1784 branch(false, false); | |
1785 __ bind(not_taken); | |
1786 __ profile_not_taken_branch(rax); | |
1787 } | |
1788 | |
1789 void TemplateTable::ret() { | |
1790 transition(vtos, vtos); | |
1791 locals_index(rbx); | |
304 | 1792 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1793 __ profile_ret(rbx, rcx); |
1794 __ get_method(rax); | |
304 | 1795 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1796 __ lea(r13, Address(r13, rbx, Address::times_1, | |
1797 constMethodOopDesc::codes_offset())); | |
0 | 1798 __ dispatch_next(vtos); |
1799 } | |
1800 | |
1801 void TemplateTable::wide_ret() { | |
1802 transition(vtos, vtos); | |
1803 locals_index_wide(rbx); | |
304 | 1804 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1805 __ profile_ret(rbx, rcx); |
1806 __ get_method(rax); | |
304 | 1807 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1808 __ lea(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1809 __ dispatch_next(vtos); |
1810 } | |
1811 | |
1812 void TemplateTable::tableswitch() { | |
1813 Label default_case, continue_execution; | |
1814 transition(itos, vtos); | |
1815 // align r13 | |
304 | 1816 __ lea(rbx, at_bcp(BytesPerInt)); |
1817 __ andptr(rbx, -BytesPerInt); | |
0 | 1818 // load lo & hi |
1819 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1820 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1821 __ bswapl(rcx); | |
1822 __ bswapl(rdx); | |
1823 // check against lo & hi | |
1824 __ cmpl(rax, rcx); | |
1825 __ jcc(Assembler::less, default_case); | |
1826 __ cmpl(rax, rdx); | |
1827 __ jcc(Assembler::greater, default_case); | |
1828 // lookup dispatch offset | |
1829 __ subl(rax, rcx); | |
1830 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1831 __ profile_switch_case(rax, rbx, rcx); | |
1832 // continue execution | |
1833 __ bind(continue_execution); | |
1834 __ bswapl(rdx); | |
304 | 1835 __ movl2ptr(rdx, rdx); |
0 | 1836 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1837 __ addptr(r13, rdx); |
0 | 1838 __ dispatch_only(vtos); |
1839 // handle default | |
1840 __ bind(default_case); | |
1841 __ profile_switch_default(rax); | |
1842 __ movl(rdx, Address(rbx, 0)); | |
1843 __ jmp(continue_execution); | |
1844 } | |
1845 | |
1846 void TemplateTable::lookupswitch() { | |
1847 transition(itos, itos); | |
1848 __ stop("lookupswitch bytecode should have been rewritten"); | |
1849 } | |
1850 | |
1851 void TemplateTable::fast_linearswitch() { | |
1852 transition(itos, vtos); | |
1853 Label loop_entry, loop, found, continue_execution; | |
1854 // bswap rax so we can avoid bswapping the table entries | |
1855 __ bswapl(rax); | |
1856 // align r13 | |
304 | 1857 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1858 // this instruction (change offsets | |
1859 // below) | |
1860 __ andptr(rbx, -BytesPerInt); | |
0 | 1861 // set counter |
1862 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1863 __ bswapl(rcx); | |
1864 __ jmpb(loop_entry); | |
1865 // table search | |
1866 __ bind(loop); | |
1867 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1868 __ jcc(Assembler::equal, found); | |
1869 __ bind(loop_entry); | |
1870 __ decrementl(rcx); | |
1871 __ jcc(Assembler::greaterEqual, loop); | |
1872 // default case | |
1873 __ profile_switch_default(rax); | |
1874 __ movl(rdx, Address(rbx, 0)); | |
1875 __ jmp(continue_execution); | |
1876 // entry found -> get offset | |
1877 __ bind(found); | |
1878 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1879 __ profile_switch_case(rcx, rax, rbx); | |
1880 // continue execution | |
1881 __ bind(continue_execution); | |
1882 __ bswapl(rdx); | |
304 | 1883 __ movl2ptr(rdx, rdx); |
0 | 1884 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1885 __ addptr(r13, rdx); |
0 | 1886 __ dispatch_only(vtos); |
1887 } | |
1888 | |
1889 void TemplateTable::fast_binaryswitch() { | |
1890 transition(itos, vtos); | |
1891 // Implementation using the following core algorithm: | |
1892 // | |
1893 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1894 // // Binary search according to "Methodik des Programmierens" by | |
1895 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1896 // int i = 0; | |
1897 // int j = n; | |
1898 // while (i+1 < j) { | |
1899 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1900 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1901 // // where a stands for the array and assuming that the (inexisting) | |
1902 // // element a[n] is infinitely big. | |
1903 // int h = (i + j) >> 1; | |
1904 // // i < h < j | |
1905 // if (key < array[h].fast_match()) { | |
1906 // j = h; | |
1907 // } else { | |
1908 // i = h; | |
1909 // } | |
1910 // } | |
1911 // // R: a[i] <= key < a[i+1] or Q | |
1912 // // (i.e., if key is within array, i is the correct index) | |
1913 // return i; | |
1914 // } | |
1915 | |
1916 // Register allocation | |
1917 const Register key = rax; // already set (tosca) | |
1918 const Register array = rbx; | |
1919 const Register i = rcx; | |
1920 const Register j = rdx; | |
1921 const Register h = rdi; | |
1922 const Register temp = rsi; | |
1923 | |
1924 // Find array start | |
304 | 1925 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1926 // get rid of this | |
1927 // instruction (change | |
1928 // offsets below) | |
1929 __ andptr(array, -BytesPerInt); | |
0 | 1930 |
1931 // Initialize i & j | |
1932 __ xorl(i, i); // i = 0; | |
1933 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1934 | |
1935 // Convert j into native byteordering | |
1936 __ bswapl(j); | |
1937 | |
1938 // And start | |
1939 Label entry; | |
1940 __ jmp(entry); | |
1941 | |
1942 // binary search loop | |
1943 { | |
1944 Label loop; | |
1945 __ bind(loop); | |
1946 // int h = (i + j) >> 1; | |
1947 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1948 __ sarl(h, 1); // h = (i + j) >> 1; | |
1949 // if (key < array[h].fast_match()) { | |
1950 // j = h; | |
1951 // } else { | |
1952 // i = h; | |
1953 // } | |
1954 // Convert array[h].match to native byte-ordering before compare | |
1955 __ movl(temp, Address(array, h, Address::times_8)); | |
1956 __ bswapl(temp); | |
1957 __ cmpl(key, temp); | |
1958 // j = h if (key < array[h].fast_match()) | |
1959 __ cmovl(Assembler::less, j, h); | |
1960 // i = h if (key >= array[h].fast_match()) | |
1961 __ cmovl(Assembler::greaterEqual, i, h); | |
1962 // while (i+1 < j) | |
1963 __ bind(entry); | |
1964 __ leal(h, Address(i, 1)); // i+1 | |
1965 __ cmpl(h, j); // i+1 < j | |
1966 __ jcc(Assembler::less, loop); | |
1967 } | |
1968 | |
1969 // end of binary search, result index is i (must check again!) | |
1970 Label default_case; | |
1971 // Convert array[i].match to native byte-ordering before compare | |
1972 __ movl(temp, Address(array, i, Address::times_8)); | |
1973 __ bswapl(temp); | |
1974 __ cmpl(key, temp); | |
1975 __ jcc(Assembler::notEqual, default_case); | |
1976 | |
1977 // entry found -> j = offset | |
1978 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
1979 __ profile_switch_case(i, key, array); | |
1980 __ bswapl(j); | |
304 | 1981 __ movl2ptr(j, j); |
0 | 1982 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 1983 __ addptr(r13, j); |
0 | 1984 __ dispatch_only(vtos); |
1985 | |
1986 // default case -> j = default offset | |
1987 __ bind(default_case); | |
1988 __ profile_switch_default(i); | |
1989 __ movl(j, Address(array, -2 * BytesPerInt)); | |
1990 __ bswapl(j); | |
304 | 1991 __ movl2ptr(j, j); |
0 | 1992 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 1993 __ addptr(r13, j); |
0 | 1994 __ dispatch_only(vtos); |
1995 } | |
1996 | |
1997 | |
1998 void TemplateTable::_return(TosState state) { | |
1999 transition(state, state); | |
2000 assert(_desc->calls_vm(), | |
2001 "inconsistent calls_vm information"); // call in remove_activation | |
2002 | |
2003 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2004 assert(state == vtos, "only valid state"); | |
304 | 2005 __ movptr(c_rarg1, aaddress(0)); |
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2006 __ load_klass(rdi, c_rarg1); |
0 | 2007 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
2008 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
2009 Label skip_register_finalizer; | |
2010 __ jcc(Assembler::zero, skip_register_finalizer); | |
2011 | |
2012 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2013 | |
2014 __ bind(skip_register_finalizer); | |
2015 } | |
2016 | |
2017 __ remove_activation(state, r13); | |
2018 __ jmp(r13); | |
2019 } | |
2020 | |
2021 // ---------------------------------------------------------------------------- | |
2022 // Volatile variables demand their effects be made known to all CPU's | |
2023 // in order. Store buffers on most chips allow reads & writes to | |
2024 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2025 // without some kind of memory barrier (i.e., it's not sufficient that | |
2026 // the interpreter does not reorder volatile references, the hardware | |
2027 // also must not reorder them). | |
2028 // | |
2029 // According to the new Java Memory Model (JMM): | |
2030 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2031 // writes act as aquire & release, so: | |
2032 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2033 // happen after the read float up to before the read. It's OK for | |
2034 // non-volatile memory refs that happen before the volatile read to | |
2035 // float down below it. | |
2036 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2037 // memory refs that happen BEFORE the write float down to after the | |
2038 // write. It's OK for non-volatile memory refs that happen after the | |
2039 // volatile write to float up before it. | |
2040 // | |
2041 // We only put in barriers around volatile refs (they are expensive), | |
2042 // not _between_ memory refs (that would require us to track the | |
2043 // flavor of the previous memory refs). Requirements (2) and (3) | |
2044 // require some barriers before volatile stores and after volatile | |
2045 // loads. These nearly cover requirement (1) but miss the | |
2046 // volatile-store-volatile-load case. This final case is placed after | |
2047 // volatile-stores although it could just as well go before | |
2048 // volatile-loads. | |
2049 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2050 order_constraint) { | |
2051 // Helper function to insert a is-volatile test and memory barrier | |
2052 if (os::is_MP()) { // Not needed on single CPU | |
2053 __ membar(order_constraint); | |
2054 } | |
2055 } | |
2056 | |
2057 void TemplateTable::resolve_cache_and_index(int byte_no, | |
2058 Register Rcache, | |
2059 Register index) { | |
2060 assert(byte_no == 1 || byte_no == 2, "byte_no out of range"); | |
2061 | |
2062 const Register temp = rbx; | |
2063 assert_different_registers(Rcache, index, temp); | |
2064 | |
2065 const int shift_count = (1 + byte_no) * BitsPerByte; | |
2066 Label resolved; | |
2067 __ get_cache_and_index_at_bcp(Rcache, index, 1); | |
2068 __ movl(temp, Address(Rcache, | |
2069 index, Address::times_8, | |
2070 constantPoolCacheOopDesc::base_offset() + | |
2071 ConstantPoolCacheEntry::indices_offset())); | |
2072 __ shrl(temp, shift_count); | |
2073 // have we resolved this bytecode? | |
2074 __ andl(temp, 0xFF); | |
2075 __ cmpl(temp, (int) bytecode()); | |
2076 __ jcc(Assembler::equal, resolved); | |
2077 | |
2078 // resolve first time through | |
2079 address entry; | |
2080 switch (bytecode()) { | |
2081 case Bytecodes::_getstatic: | |
2082 case Bytecodes::_putstatic: | |
2083 case Bytecodes::_getfield: | |
2084 case Bytecodes::_putfield: | |
2085 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2086 break; | |
2087 case Bytecodes::_invokevirtual: | |
2088 case Bytecodes::_invokespecial: | |
2089 case Bytecodes::_invokestatic: | |
2090 case Bytecodes::_invokeinterface: | |
2091 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2092 break; | |
2093 default: | |
2094 ShouldNotReachHere(); | |
2095 break; | |
2096 } | |
2097 __ movl(temp, (int) bytecode()); | |
2098 __ call_VM(noreg, entry, temp); | |
2099 | |
2100 // Update registers with resolved info | |
2101 __ get_cache_and_index_at_bcp(Rcache, index, 1); | |
2102 __ bind(resolved); | |
2103 } | |
2104 | |
2105 // The Rcache and index registers must be set before call | |
2106 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2107 Register cache, | |
2108 Register index, | |
2109 Register off, | |
2110 Register flags, | |
2111 bool is_static = false) { | |
2112 assert_different_registers(cache, index, flags, off); | |
2113 | |
2114 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2115 // Field offset | |
304 | 2116 __ movptr(off, Address(cache, index, Address::times_8, |
2117 in_bytes(cp_base_offset + | |
2118 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2119 // Flags |
2120 __ movl(flags, Address(cache, index, Address::times_8, | |
2121 in_bytes(cp_base_offset + | |
2122 ConstantPoolCacheEntry::flags_offset()))); | |
2123 | |
2124 // klass overwrite register | |
2125 if (is_static) { | |
304 | 2126 __ movptr(obj, Address(cache, index, Address::times_8, |
2127 in_bytes(cp_base_offset + | |
2128 ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2129 } |
2130 } | |
2131 | |
2132 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2133 Register method, | |
2134 Register itable_index, | |
2135 Register flags, | |
2136 bool is_invokevirtual, | |
2137 bool is_invokevfinal /*unused*/) { | |
2138 // setup registers | |
2139 const Register cache = rcx; | |
2140 const Register index = rdx; | |
2141 assert_different_registers(method, flags); | |
2142 assert_different_registers(method, cache, index); | |
2143 assert_different_registers(itable_index, flags); | |
2144 assert_different_registers(itable_index, cache, index); | |
2145 // determine constant pool cache field offsets | |
2146 const int method_offset = in_bytes( | |
2147 constantPoolCacheOopDesc::base_offset() + | |
2148 (is_invokevirtual | |
2149 ? ConstantPoolCacheEntry::f2_offset() | |
2150 : ConstantPoolCacheEntry::f1_offset())); | |
2151 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2152 ConstantPoolCacheEntry::flags_offset()); | |
2153 // access constant pool cache fields | |
2154 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2155 ConstantPoolCacheEntry::f2_offset()); | |
2156 | |
2157 resolve_cache_and_index(byte_no, cache, index); | |
2158 | |
2159 assert(wordSize == 8, "adjust code below"); | |
304 | 2160 __ movptr(method, Address(cache, index, Address::times_8, method_offset)); |
0 | 2161 if (itable_index != noreg) { |
304 | 2162 __ movptr(itable_index, |
0 | 2163 Address(cache, index, Address::times_8, index_offset)); |
2164 } | |
2165 __ movl(flags , Address(cache, index, Address::times_8, flags_offset)); | |
2166 } | |
2167 | |
2168 | |
2169 // The registers cache and index expected to be set before call. | |
2170 // Correct values of the cache and index registers are preserved. | |
2171 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2172 bool is_static, bool has_tos) { | |
2173 // do the JVMTI work here to avoid disturbing the register state below | |
2174 // We use c_rarg registers here because we want to use the register used in | |
2175 // the call to the VM | |
2176 if (JvmtiExport::can_post_field_access()) { | |
2177 // Check to see if a field access watch has been set before we | |
2178 // take the time to call into the VM. | |
2179 Label L1; | |
2180 assert_different_registers(cache, index, rax); | |
2181 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2182 __ testl(rax, rax); | |
2183 __ jcc(Assembler::zero, L1); | |
2184 | |
2185 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2186 | |
2187 // cache entry pointer | |
304 | 2188 __ addptr(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2189 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2190 __ addptr(c_rarg2, c_rarg3); |
0 | 2191 if (is_static) { |
2192 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2193 } else { | |
304 | 2194 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2195 __ verify_oop(c_rarg1); |
2196 } | |
2197 // c_rarg1: object pointer or NULL | |
2198 // c_rarg2: cache entry pointer | |
2199 // c_rarg3: jvalue object on the stack | |
2200 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2201 InterpreterRuntime::post_field_access), | |
2202 c_rarg1, c_rarg2, c_rarg3); | |
2203 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2204 __ bind(L1); | |
2205 } | |
2206 } | |
2207 | |
2208 void TemplateTable::pop_and_check_object(Register r) { | |
2209 __ pop_ptr(r); | |
2210 __ null_check(r); // for field access must check obj. | |
2211 __ verify_oop(r); | |
2212 } | |
2213 | |
2214 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2215 transition(vtos, vtos); | |
2216 | |
2217 const Register cache = rcx; | |
2218 const Register index = rdx; | |
2219 const Register obj = c_rarg3; | |
2220 const Register off = rbx; | |
2221 const Register flags = rax; | |
2222 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2223 | |
2224 resolve_cache_and_index(byte_no, cache, index); | |
2225 jvmti_post_field_access(cache, index, is_static, false); | |
2226 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2227 | |
2228 if (!is_static) { | |
2229 // obj is on the stack | |
2230 pop_and_check_object(obj); | |
2231 } | |
2232 | |
2233 const Address field(obj, off, Address::times_1); | |
2234 | |
2235 Label Done, notByte, notInt, notShort, notChar, | |
2236 notLong, notFloat, notObj, notDouble; | |
2237 | |
2238 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2239 assert(btos == 0, "change code, btos != 0"); | |
2240 | |
2241 __ andl(flags, 0x0F); | |
2242 __ jcc(Assembler::notZero, notByte); | |
2243 // btos | |
2244 __ load_signed_byte(rax, field); | |
2245 __ push(btos); | |
2246 // Rewrite bytecode to be faster | |
2247 if (!is_static) { | |
2248 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2249 } | |
2250 __ jmp(Done); | |
2251 | |
2252 __ bind(notByte); | |
2253 __ cmpl(flags, atos); | |
2254 __ jcc(Assembler::notEqual, notObj); | |
2255 // atos | |
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2256 __ load_heap_oop(rax, field); |
0 | 2257 __ push(atos); |
2258 if (!is_static) { | |
2259 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2260 } | |
2261 __ jmp(Done); | |
2262 | |
2263 __ bind(notObj); | |
2264 __ cmpl(flags, itos); | |
2265 __ jcc(Assembler::notEqual, notInt); | |
2266 // itos | |
2267 __ movl(rax, field); | |
2268 __ push(itos); | |
2269 // Rewrite bytecode to be faster | |
2270 if (!is_static) { | |
2271 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2272 } | |
2273 __ jmp(Done); | |
2274 | |
2275 __ bind(notInt); | |
2276 __ cmpl(flags, ctos); | |
2277 __ jcc(Assembler::notEqual, notChar); | |
2278 // ctos | |
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2279 __ load_unsigned_short(rax, field); |
0 | 2280 __ push(ctos); |
2281 // Rewrite bytecode to be faster | |
2282 if (!is_static) { | |
2283 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2284 } | |
2285 __ jmp(Done); | |
2286 | |
2287 __ bind(notChar); | |
2288 __ cmpl(flags, stos); | |
2289 __ jcc(Assembler::notEqual, notShort); | |
2290 // stos | |
622
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2291 __ load_signed_short(rax, field); |
0 | 2292 __ push(stos); |
2293 // Rewrite bytecode to be faster | |
2294 if (!is_static) { | |
2295 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2296 } | |
2297 __ jmp(Done); | |
2298 | |
2299 __ bind(notShort); | |
2300 __ cmpl(flags, ltos); | |
2301 __ jcc(Assembler::notEqual, notLong); | |
2302 // ltos | |
2303 __ movq(rax, field); | |
2304 __ push(ltos); | |
2305 // Rewrite bytecode to be faster | |
2306 if (!is_static) { | |
2307 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2308 } | |
2309 __ jmp(Done); | |
2310 | |
2311 __ bind(notLong); | |
2312 __ cmpl(flags, ftos); | |
2313 __ jcc(Assembler::notEqual, notFloat); | |
2314 // ftos | |
2315 __ movflt(xmm0, field); | |
2316 __ push(ftos); | |
2317 // Rewrite bytecode to be faster | |
2318 if (!is_static) { | |
2319 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2320 } | |
2321 __ jmp(Done); | |
2322 | |
2323 __ bind(notFloat); | |
2324 #ifdef ASSERT | |
2325 __ cmpl(flags, dtos); | |
2326 __ jcc(Assembler::notEqual, notDouble); | |
2327 #endif | |
2328 // dtos | |
2329 __ movdbl(xmm0, field); | |
2330 __ push(dtos); | |
2331 // Rewrite bytecode to be faster | |
2332 if (!is_static) { | |
2333 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2334 } | |
2335 #ifdef ASSERT | |
2336 __ jmp(Done); | |
2337 | |
2338 __ bind(notDouble); | |
2339 __ stop("Bad state"); | |
2340 #endif | |
2341 | |
2342 __ bind(Done); | |
2343 // [jk] not needed currently | |
2344 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2345 // Assembler::LoadStore)); | |
2346 } | |
2347 | |
2348 | |
2349 void TemplateTable::getfield(int byte_no) { | |
2350 getfield_or_static(byte_no, false); | |
2351 } | |
2352 | |
2353 void TemplateTable::getstatic(int byte_no) { | |
2354 getfield_or_static(byte_no, true); | |
2355 } | |
2356 | |
2357 // The registers cache and index expected to be set before call. | |
2358 // The function may destroy various registers, just not the cache and index registers. | |
2359 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2360 transition(vtos, vtos); | |
2361 | |
2362 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2363 | |
2364 if (JvmtiExport::can_post_field_modification()) { | |
2365 // Check to see if a field modification watch has been set before | |
2366 // we take the time to call into the VM. | |
2367 Label L1; | |
2368 assert_different_registers(cache, index, rax); | |
2369 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2370 __ testl(rax, rax); | |
2371 __ jcc(Assembler::zero, L1); | |
2372 | |
2373 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2374 | |
2375 if (is_static) { | |
2376 // Life is simple. Null out the object pointer. | |
2377 __ xorl(c_rarg1, c_rarg1); | |
2378 } else { | |
2379 // Life is harder. The stack holds the value on top, followed by | |
2380 // the object. We don't know the size of the value, though; it | |
2381 // could be one or two words depending on its type. As a result, | |
2382 // we must find the type to determine where the object is. | |
2383 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2384 Address::times_8, | |
2385 in_bytes(cp_base_offset + | |
2386 ConstantPoolCacheEntry::flags_offset()))); | |
2387 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
2388 // Make sure we don't need to mask rcx for tosBits after the | |
2389 // above shift | |
2390 ConstantPoolCacheEntry::verify_tosBits(); | |
304 | 2391 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2392 __ cmpl(c_rarg3, ltos); |
304 | 2393 __ cmovptr(Assembler::equal, |
2394 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2395 __ cmpl(c_rarg3, dtos); |
304 | 2396 __ cmovptr(Assembler::equal, |
2397 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2398 } |
2399 // cache entry pointer | |
304 | 2400 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2401 __ shll(rscratch1, LogBytesPerWord); |
304 | 2402 __ addptr(c_rarg2, rscratch1); |
0 | 2403 // object (tos) |
304 | 2404 __ mov(c_rarg3, rsp); |
0 | 2405 // c_rarg1: object pointer set up above (NULL if static) |
2406 // c_rarg2: cache entry pointer | |
2407 // c_rarg3: jvalue object on the stack | |
2408 __ call_VM(noreg, | |
2409 CAST_FROM_FN_PTR(address, | |
2410 InterpreterRuntime::post_field_modification), | |
2411 c_rarg1, c_rarg2, c_rarg3); | |
2412 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2413 __ bind(L1); | |
2414 } | |
2415 } | |
2416 | |
2417 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2418 transition(vtos, vtos); | |
2419 | |
2420 const Register cache = rcx; | |
2421 const Register index = rdx; | |
2422 const Register obj = rcx; | |
2423 const Register off = rbx; | |
2424 const Register flags = rax; | |
2425 const Register bc = c_rarg3; | |
2426 | |
2427 resolve_cache_and_index(byte_no, cache, index); | |
2428 jvmti_post_field_mod(cache, index, is_static); | |
2429 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2430 | |
2431 // [jk] not needed currently | |
2432 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2433 // Assembler::StoreStore)); | |
2434 | |
2435 Label notVolatile, Done; | |
2436 __ movl(rdx, flags); | |
2437 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2438 __ andl(rdx, 0x1); | |
2439 | |
2440 // field address | |
2441 const Address field(obj, off, Address::times_1); | |
2442 | |
2443 Label notByte, notInt, notShort, notChar, | |
2444 notLong, notFloat, notObj, notDouble; | |
2445 | |
2446 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2447 | |
2448 assert(btos == 0, "change code, btos != 0"); | |
2449 __ andl(flags, 0x0f); | |
2450 __ jcc(Assembler::notZero, notByte); | |
2451 // btos | |
2452 __ pop(btos); | |
2453 if (!is_static) pop_and_check_object(obj); | |
2454 __ movb(field, rax); | |
2455 if (!is_static) { | |
2456 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx); | |
2457 } | |
2458 __ jmp(Done); | |
2459 | |
2460 __ bind(notByte); | |
2461 __ cmpl(flags, atos); | |
2462 __ jcc(Assembler::notEqual, notObj); | |
2463 // atos | |
2464 __ pop(atos); | |
2465 if (!is_static) pop_and_check_object(obj); | |
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2466 |
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2467 // Store into the field |
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2468 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2469 |
0 | 2470 if (!is_static) { |
2471 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx); | |
2472 } | |
2473 __ jmp(Done); | |
2474 | |
2475 __ bind(notObj); | |
2476 __ cmpl(flags, itos); | |
2477 __ jcc(Assembler::notEqual, notInt); | |
2478 // itos | |
2479 __ pop(itos); | |
2480 if (!is_static) pop_and_check_object(obj); | |
2481 __ movl(field, rax); | |
2482 if (!is_static) { | |
2483 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx); | |
2484 } | |
2485 __ jmp(Done); | |
2486 | |
2487 __ bind(notInt); | |
2488 __ cmpl(flags, ctos); | |
2489 __ jcc(Assembler::notEqual, notChar); | |
2490 // ctos | |
2491 __ pop(ctos); | |
2492 if (!is_static) pop_and_check_object(obj); | |
2493 __ movw(field, rax); | |
2494 if (!is_static) { | |
2495 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx); | |
2496 } | |
2497 __ jmp(Done); | |
2498 | |
2499 __ bind(notChar); | |
2500 __ cmpl(flags, stos); | |
2501 __ jcc(Assembler::notEqual, notShort); | |
2502 // stos | |
2503 __ pop(stos); | |
2504 if (!is_static) pop_and_check_object(obj); | |
2505 __ movw(field, rax); | |
2506 if (!is_static) { | |
2507 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx); | |
2508 } | |
2509 __ jmp(Done); | |
2510 | |
2511 __ bind(notShort); | |
2512 __ cmpl(flags, ltos); | |
2513 __ jcc(Assembler::notEqual, notLong); | |
2514 // ltos | |
2515 __ pop(ltos); | |
2516 if (!is_static) pop_and_check_object(obj); | |
2517 __ movq(field, rax); | |
2518 if (!is_static) { | |
2519 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx); | |
2520 } | |
2521 __ jmp(Done); | |
2522 | |
2523 __ bind(notLong); | |
2524 __ cmpl(flags, ftos); | |
2525 __ jcc(Assembler::notEqual, notFloat); | |
2526 // ftos | |
2527 __ pop(ftos); | |
2528 if (!is_static) pop_and_check_object(obj); | |
2529 __ movflt(field, xmm0); | |
2530 if (!is_static) { | |
2531 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx); | |
2532 } | |
2533 __ jmp(Done); | |
2534 | |
2535 __ bind(notFloat); | |
2536 #ifdef ASSERT | |
2537 __ cmpl(flags, dtos); | |
2538 __ jcc(Assembler::notEqual, notDouble); | |
2539 #endif | |
2540 // dtos | |
2541 __ pop(dtos); | |
2542 if (!is_static) pop_and_check_object(obj); | |
2543 __ movdbl(field, xmm0); | |
2544 if (!is_static) { | |
2545 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx); | |
2546 } | |
2547 | |
2548 #ifdef ASSERT | |
2549 __ jmp(Done); | |
2550 | |
2551 __ bind(notDouble); | |
2552 __ stop("Bad state"); | |
2553 #endif | |
2554 | |
2555 __ bind(Done); | |
2556 // Check for volatile store | |
2557 __ testl(rdx, rdx); | |
2558 __ jcc(Assembler::zero, notVolatile); | |
2559 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2560 Assembler::StoreStore)); | |
2561 | |
2562 __ bind(notVolatile); | |
2563 } | |
2564 | |
2565 void TemplateTable::putfield(int byte_no) { | |
2566 putfield_or_static(byte_no, false); | |
2567 } | |
2568 | |
2569 void TemplateTable::putstatic(int byte_no) { | |
2570 putfield_or_static(byte_no, true); | |
2571 } | |
2572 | |
2573 void TemplateTable::jvmti_post_fast_field_mod() { | |
2574 if (JvmtiExport::can_post_field_modification()) { | |
2575 // Check to see if a field modification watch has been set before | |
2576 // we take the time to call into the VM. | |
2577 Label L2; | |
2578 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2579 __ testl(c_rarg3, c_rarg3); | |
2580 __ jcc(Assembler::zero, L2); | |
2581 __ pop_ptr(rbx); // copy the object pointer from tos | |
2582 __ verify_oop(rbx); | |
2583 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2584 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2585 __ mov(c_rarg3, rsp); | |
0 | 2586 const Address field(c_rarg3, 0); |
2587 | |
2588 switch (bytecode()) { // load values into the jvalue object | |
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2589 case Bytecodes::_fast_aputfield: __ movq(field, rax); break; |
0 | 2590 case Bytecodes::_fast_lputfield: __ movq(field, rax); break; |
2591 case Bytecodes::_fast_iputfield: __ movl(field, rax); break; | |
2592 case Bytecodes::_fast_bputfield: __ movb(field, rax); break; | |
2593 case Bytecodes::_fast_sputfield: // fall through | |
2594 case Bytecodes::_fast_cputfield: __ movw(field, rax); break; | |
2595 case Bytecodes::_fast_fputfield: __ movflt(field, xmm0); break; | |
2596 case Bytecodes::_fast_dputfield: __ movdbl(field, xmm0); break; | |
2597 default: | |
2598 ShouldNotReachHere(); | |
2599 } | |
2600 | |
2601 // Save rax because call_VM() will clobber it, then use it for | |
2602 // JVMTI purposes | |
304 | 2603 __ push(rax); |
0 | 2604 // access constant pool cache entry |
2605 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2606 __ verify_oop(rbx); | |
2607 // rbx: object pointer copied above | |
2608 // c_rarg2: cache entry pointer | |
2609 // c_rarg3: jvalue object on the stack | |
2610 __ call_VM(noreg, | |
2611 CAST_FROM_FN_PTR(address, | |
2612 InterpreterRuntime::post_field_modification), | |
2613 rbx, c_rarg2, c_rarg3); | |
304 | 2614 __ pop(rax); // restore lower value |
2615 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2616 __ bind(L2); |
2617 } | |
2618 } | |
2619 | |
2620 void TemplateTable::fast_storefield(TosState state) { | |
2621 transition(state, vtos); | |
2622 | |
2623 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2624 | |
2625 jvmti_post_fast_field_mod(); | |
2626 | |
2627 // access constant pool cache | |
2628 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2629 | |
2630 // test for volatile with rdx | |
2631 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2632 in_bytes(base + | |
2633 ConstantPoolCacheEntry::flags_offset()))); | |
2634 | |
2635 // replace index with field offset from cache entry | |
304 | 2636 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2637 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2638 |
2639 // [jk] not needed currently | |
2640 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2641 // Assembler::StoreStore)); | |
2642 | |
2643 Label notVolatile; | |
2644 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2645 __ andl(rdx, 0x1); | |
2646 | |
2647 // Get object from stack | |
2648 pop_and_check_object(rcx); | |
2649 | |
2650 // field address | |
2651 const Address field(rcx, rbx, Address::times_1); | |
2652 | |
2653 // access field | |
2654 switch (bytecode()) { | |
2655 case Bytecodes::_fast_aputfield: | |
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2656 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2657 break; |
2658 case Bytecodes::_fast_lputfield: | |
2659 __ movq(field, rax); | |
2660 break; | |
2661 case Bytecodes::_fast_iputfield: | |
2662 __ movl(field, rax); | |
2663 break; | |
2664 case Bytecodes::_fast_bputfield: | |
2665 __ movb(field, rax); | |
2666 break; | |
2667 case Bytecodes::_fast_sputfield: | |
2668 // fall through | |
2669 case Bytecodes::_fast_cputfield: | |
2670 __ movw(field, rax); | |
2671 break; | |
2672 case Bytecodes::_fast_fputfield: | |
2673 __ movflt(field, xmm0); | |
2674 break; | |
2675 case Bytecodes::_fast_dputfield: | |
2676 __ movdbl(field, xmm0); | |
2677 break; | |
2678 default: | |
2679 ShouldNotReachHere(); | |
2680 } | |
2681 | |
2682 // Check for volatile store | |
2683 __ testl(rdx, rdx); | |
2684 __ jcc(Assembler::zero, notVolatile); | |
2685 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2686 Assembler::StoreStore)); | |
2687 __ bind(notVolatile); | |
2688 } | |
2689 | |
2690 | |
2691 void TemplateTable::fast_accessfield(TosState state) { | |
2692 transition(atos, state); | |
2693 | |
2694 // Do the JVMTI work here to avoid disturbing the register state below | |
2695 if (JvmtiExport::can_post_field_access()) { | |
2696 // Check to see if a field access watch has been set before we | |
2697 // take the time to call into the VM. | |
2698 Label L1; | |
2699 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2700 __ testl(rcx, rcx); | |
2701 __ jcc(Assembler::zero, L1); | |
2702 // access constant pool cache entry | |
2703 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2704 __ verify_oop(rax); |
304 | 2705 __ mov(r12, rax); // save object pointer before call_VM() clobbers it |
2706 __ mov(c_rarg1, rax); | |
0 | 2707 // c_rarg1: object pointer copied above |
2708 // c_rarg2: cache entry pointer | |
2709 __ call_VM(noreg, | |
2710 CAST_FROM_FN_PTR(address, | |
2711 InterpreterRuntime::post_field_access), | |
2712 c_rarg1, c_rarg2); | |
304 | 2713 __ mov(rax, r12); // restore object pointer |
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2714 __ reinit_heapbase(); |
0 | 2715 __ bind(L1); |
2716 } | |
2717 | |
2718 // access constant pool cache | |
2719 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2720 // replace index with field offset from cache entry | |
2721 // [jk] not needed currently | |
2722 // if (os::is_MP()) { | |
2723 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2724 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2725 // ConstantPoolCacheEntry::flags_offset()))); | |
2726 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2727 // __ andl(rdx, 0x1); | |
2728 // } | |
304 | 2729 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2730 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2731 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2732 |
2733 // rax: object | |
2734 __ verify_oop(rax); | |
2735 __ null_check(rax); | |
2736 Address field(rax, rbx, Address::times_1); | |
2737 | |
2738 // access field | |
2739 switch (bytecode()) { | |
2740 case Bytecodes::_fast_agetfield: | |
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2741 __ load_heap_oop(rax, field); |
0 | 2742 __ verify_oop(rax); |
2743 break; | |
2744 case Bytecodes::_fast_lgetfield: | |
2745 __ movq(rax, field); | |
2746 break; | |
2747 case Bytecodes::_fast_igetfield: | |
2748 __ movl(rax, field); | |
2749 break; | |
2750 case Bytecodes::_fast_bgetfield: | |
2751 __ movsbl(rax, field); | |
2752 break; | |
2753 case Bytecodes::_fast_sgetfield: | |
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2754 __ load_signed_short(rax, field); |
0 | 2755 break; |
2756 case Bytecodes::_fast_cgetfield: | |
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2757 __ load_unsigned_short(rax, field); |
0 | 2758 break; |
2759 case Bytecodes::_fast_fgetfield: | |
2760 __ movflt(xmm0, field); | |
2761 break; | |
2762 case Bytecodes::_fast_dgetfield: | |
2763 __ movdbl(xmm0, field); | |
2764 break; | |
2765 default: | |
2766 ShouldNotReachHere(); | |
2767 } | |
2768 // [jk] not needed currently | |
2769 // if (os::is_MP()) { | |
2770 // Label notVolatile; | |
2771 // __ testl(rdx, rdx); | |
2772 // __ jcc(Assembler::zero, notVolatile); | |
2773 // __ membar(Assembler::LoadLoad); | |
2774 // __ bind(notVolatile); | |
2775 //}; | |
2776 } | |
2777 | |
2778 void TemplateTable::fast_xaccess(TosState state) { | |
2779 transition(vtos, state); | |
2780 | |
2781 // get receiver | |
304 | 2782 __ movptr(rax, aaddress(0)); |
0 | 2783 debug_only(__ verify_local_tag(frame::TagReference, 0)); |
2784 // access constant pool cache | |
2785 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2786 __ movptr(rbx, |
2787 Address(rcx, rdx, Address::times_8, | |
2788 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2789 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2790 // make sure exception is reported in correct bcp range (getfield is |
2791 // next instruction) | |
304 | 2792 __ increment(r13); |
0 | 2793 __ null_check(rax); |
2794 switch (state) { | |
2795 case itos: | |
2796 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2797 break; | |
2798 case atos: | |
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2799 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2800 __ verify_oop(rax); |
2801 break; | |
2802 case ftos: | |
2803 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2804 break; | |
2805 default: | |
2806 ShouldNotReachHere(); | |
2807 } | |
2808 | |
2809 // [jk] not needed currently | |
2810 // if (os::is_MP()) { | |
2811 // Label notVolatile; | |
2812 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
2813 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2814 // ConstantPoolCacheEntry::flags_offset()))); | |
2815 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2816 // __ testl(rdx, 0x1); | |
2817 // __ jcc(Assembler::zero, notVolatile); | |
2818 // __ membar(Assembler::LoadLoad); | |
2819 // __ bind(notVolatile); | |
2820 // } | |
2821 | |
304 | 2822 __ decrement(r13); |
0 | 2823 } |
2824 | |
2825 | |
2826 | |
2827 //----------------------------------------------------------------------------- | |
2828 // Calls | |
2829 | |
2830 void TemplateTable::count_calls(Register method, Register temp) { | |
2831 // implemented elsewhere | |
2832 ShouldNotReachHere(); | |
2833 } | |
2834 | |
2835 void TemplateTable::prepare_invoke(Register method, | |
2836 Register index, | |
2837 int byte_no, | |
2838 Bytecodes::Code code) { | |
2839 // determine flags | |
2840 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; | |
2841 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; | |
2842 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
2843 const bool load_receiver = code != Bytecodes::_invokestatic; | |
2844 const bool receiver_null_check = is_invokespecial; | |
2845 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2846 // setup registers & access constant pool cache | |
2847 const Register recv = rcx; | |
2848 const Register flags = rdx; | |
2849 assert_different_registers(method, index, recv, flags); | |
2850 | |
2851 // save 'interpreter return address' | |
2852 __ save_bcp(); | |
2853 | |
2854 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual); | |
2855 | |
2856 // load receiver if needed (note: no return address pushed yet) | |
2857 if (load_receiver) { | |
2858 __ movl(recv, flags); | |
2859 __ andl(recv, 0xFF); | |
2860 if (TaggedStackInterpreter) __ shll(recv, 1); // index*2 | |
304 | 2861 __ movptr(recv, Address(rsp, recv, Address::times_8, |
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2862 -Interpreter::expr_offset_in_bytes(1))); |
0 | 2863 __ verify_oop(recv); |
2864 } | |
2865 | |
2866 // do null check if needed | |
2867 if (receiver_null_check) { | |
2868 __ null_check(recv); | |
2869 } | |
2870 | |
2871 if (save_flags) { | |
2872 __ movl(r13, flags); | |
2873 } | |
2874 | |
2875 // compute return type | |
2876 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2877 // Make sure we don't need to mask flags for tosBits after the above shift | |
2878 ConstantPoolCacheEntry::verify_tosBits(); | |
2879 // load return address | |
2880 { | |
2881 ExternalAddress return_5((address)Interpreter::return_5_addrs_by_index_table()); | |
2882 ExternalAddress return_3((address)Interpreter::return_3_addrs_by_index_table()); | |
2883 __ lea(rscratch1, (is_invokeinterface ? return_5 : return_3)); | |
304 | 2884 __ movptr(flags, Address(rscratch1, flags, Address::times_8)); |
0 | 2885 } |
2886 | |
2887 // push return address | |
304 | 2888 __ push(flags); |
0 | 2889 |
2890 // Restore flag field from the constant pool cache, and restore esi | |
2891 // for later null checks. r13 is the bytecode pointer | |
2892 if (save_flags) { | |
2893 __ movl(flags, r13); | |
2894 __ restore_bcp(); | |
2895 } | |
2896 } | |
2897 | |
2898 | |
2899 void TemplateTable::invokevirtual_helper(Register index, | |
2900 Register recv, | |
2901 Register flags) { | |
2902 // Uses temporary registers rax, rdx assert_different_registers(index, recv, rax, rdx); | |
2903 | |
2904 // Test for an invoke of a final method | |
2905 Label notFinal; | |
2906 __ movl(rax, flags); | |
2907 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2908 __ jcc(Assembler::zero, notFinal); | |
2909 | |
2910 const Register method = index; // method must be rbx | |
2911 assert(method == rbx, | |
2912 "methodOop must be rbx for interpreter calling convention"); | |
2913 | |
2914 // do the call - the index is actually the method to call | |
2915 __ verify_oop(method); | |
2916 | |
2917 // It's final, need a null check here! | |
2918 __ null_check(recv); | |
2919 | |
2920 // profile this call | |
2921 __ profile_final_call(rax); | |
2922 | |
2923 __ jump_from_interpreted(method, rax); | |
2924 | |
2925 __ bind(notFinal); | |
2926 | |
2927 // get receiver klass | |
2928 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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2929 __ load_klass(rax, recv); |
0 | 2930 |
2931 __ verify_oop(rax); | |
2932 | |
2933 // profile this call | |
2934 __ profile_virtual_call(rax, r14, rdx); | |
2935 | |
2936 // get target methodOop & entry point | |
2937 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2938 assert(vtableEntry::size() * wordSize == 8, | |
2939 "adjust the scaling in the code below"); | |
304 | 2940 __ movptr(method, Address(rax, index, |
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2941 Address::times_8, |
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2942 base + vtableEntry::method_offset_in_bytes())); |
304 | 2943 __ movptr(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
0 | 2944 __ jump_from_interpreted(method, rdx); |
2945 } | |
2946 | |
2947 | |
2948 void TemplateTable::invokevirtual(int byte_no) { | |
2949 transition(vtos, vtos); | |
2950 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
2951 | |
2952 // rbx: index | |
2953 // rcx: receiver | |
2954 // rdx: flags | |
2955 | |
2956 invokevirtual_helper(rbx, rcx, rdx); | |
2957 } | |
2958 | |
2959 | |
2960 void TemplateTable::invokespecial(int byte_no) { | |
2961 transition(vtos, vtos); | |
2962 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
2963 // do the call | |
2964 __ verify_oop(rbx); | |
2965 __ profile_call(rax); | |
2966 __ jump_from_interpreted(rbx, rax); | |
2967 } | |
2968 | |
2969 | |
2970 void TemplateTable::invokestatic(int byte_no) { | |
2971 transition(vtos, vtos); | |
2972 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
2973 // do the call | |
2974 __ verify_oop(rbx); | |
2975 __ profile_call(rax); | |
2976 __ jump_from_interpreted(rbx, rax); | |
2977 } | |
2978 | |
2979 void TemplateTable::fast_invokevfinal(int byte_no) { | |
2980 transition(vtos, vtos); | |
2981 __ stop("fast_invokevfinal not used on amd64"); | |
2982 } | |
2983 | |
2984 void TemplateTable::invokeinterface(int byte_no) { | |
2985 transition(vtos, vtos); | |
2986 prepare_invoke(rax, rbx, byte_no, bytecode()); | |
2987 | |
2988 // rax: Interface | |
2989 // rbx: index | |
2990 // rcx: receiver | |
2991 // rdx: flags | |
2992 | |
2993 // Special case of invokeinterface called for virtual method of | |
2994 // java.lang.Object. See cpCacheOop.cpp for details. | |
2995 // This code isn't produced by javac, but could be produced by | |
2996 // another compliant java compiler. | |
2997 Label notMethod; | |
2998 __ movl(r14, rdx); | |
2999 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3000 __ jcc(Assembler::zero, notMethod); | |
3001 | |
3002 invokevirtual_helper(rbx, rcx, rdx); | |
3003 __ bind(notMethod); | |
3004 | |
3005 // Get receiver klass into rdx - also a null check | |
3006 __ restore_locals(); // restore r14 | |
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3007 __ load_klass(rdx, rcx); |
0 | 3008 __ verify_oop(rdx); |
3009 | |
3010 // profile this call | |
3011 __ profile_virtual_call(rdx, r13, r14); | |
3012 | |
623
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3013 Label no_such_interface, no_such_method; |
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3014 |
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3015 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3016 rdx, rax, rbx, |
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3017 // outputs: method, scan temp. reg |
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3018 rbx, r13, |
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3019 no_such_interface); |
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3020 |
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3021 // rbx,: methodOop to call |
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3022 // rcx: receiver |
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3023 // Check for abstract method error |
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3024 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3025 // interpreter entry point and a conditional jump to it in case of a null |
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3026 // method. |
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3027 __ testptr(rbx, rbx); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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3028 __ jcc(Assembler::zero, no_such_method); |
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3029 |
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3030 // do the call |
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3031 // rcx: receiver |
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3032 // rbx,: methodOop |
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3033 __ jump_from_interpreted(rbx, rdx); |
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3034 __ should_not_reach_here(); |
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|
3035 |
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3036 // exception handling code follows... |
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3037 // note: must restore interpreter registers to canonical |
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3038 // state for exception handling to work correctly! |
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3039 |
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3040 __ bind(no_such_method); |
0 | 3041 // throw exception |
623
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3042 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3043 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3044 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3045 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3046 // the call_VM checks for exception, so we should never return here. |
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3047 __ should_not_reach_here(); |
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|
3048 |
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3049 __ bind(no_such_interface); |
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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3050 // throw exception |
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3051 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3052 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3053 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3054 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3055 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3056 // the call_VM checks for exception, so we should never return here. | |
3057 __ should_not_reach_here(); | |
623
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3058 return; |
0 | 3059 } |
3060 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
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|
3061 void TemplateTable::invokedynamic(int byte_no) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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|
3062 transition(vtos, vtos); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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|
3063 |
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6655646: dynamic languages need dynamically linked call sites
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3064 if (!EnableInvokeDynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
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3065 // We should not encounter this bytecode if !EnableInvokeDynamic. |
be93aad57795
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diff
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|
3066 // The verifier will stop it. However, if we get past the verifier, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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623
diff
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3067 // this will stop the thread in a reasonable way, without crashing the JVM. |
be93aad57795
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jrose
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diff
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|
3068 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
3069 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
be93aad57795
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diff
changeset
|
3070 // the call_VM checks for exception, so we should never return here. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
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|
3071 __ should_not_reach_here(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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|
3072 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
3073 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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|
3074 |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
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|
3075 __ stop("invokedynamic NYI");//6815692// |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
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|
3076 } |
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6655646: dynamic languages need dynamically linked call sites
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|
3077 |
623
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3078 |
0 | 3079 //----------------------------------------------------------------------------- |
3080 // Allocation | |
3081 | |
3082 void TemplateTable::_new() { | |
3083 transition(vtos, atos); | |
3084 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3085 Label slow_case; | |
3086 Label done; | |
3087 Label initialize_header; | |
3088 Label initialize_object; // including clearing the fields | |
3089 Label allocate_shared; | |
3090 | |
3091 __ get_cpool_and_tags(rsi, rax); | |
3092 // get instanceKlass | |
304 | 3093 __ movptr(rsi, Address(rsi, rdx, |
3094 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3095 |
3096 // make sure the class we're about to instantiate has been | |
3097 // resolved. Note: slow_case does a pop of stack, which is why we | |
3098 // loaded class/pushed above | |
3099 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
3100 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
3101 JVM_CONSTANT_Class); | |
3102 __ jcc(Assembler::notEqual, slow_case); | |
3103 | |
3104 // make sure klass is initialized & doesn't have finalizer | |
3105 // make sure klass is fully initialized | |
3106 __ cmpl(Address(rsi, | |
3107 instanceKlass::init_state_offset_in_bytes() + | |
3108 sizeof(oopDesc)), | |
3109 instanceKlass::fully_initialized); | |
3110 __ jcc(Assembler::notEqual, slow_case); | |
3111 | |
3112 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3113 __ movl(rdx, | |
3114 Address(rsi, | |
3115 Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3116 // test to see if it has a finalizer or is malformed in some way | |
3117 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3118 __ jcc(Assembler::notZero, slow_case); | |
3119 | |
3120 // Allocate the instance | |
3121 // 1) Try to allocate in the TLAB | |
3122 // 2) if fail and the object is large allocate in the shared Eden | |
3123 // 3) if the above fails (or is not applicable), go to a slow case | |
3124 // (creates a new TLAB, etc.) | |
3125 | |
3126 const bool allow_shared_alloc = | |
3127 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3128 | |
3129 if (UseTLAB) { | |
304 | 3130 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3131 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3132 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3133 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3134 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3135 if (ZeroTLAB) { |
3136 // the fields have been already cleared | |
3137 __ jmp(initialize_header); | |
3138 } else { | |
3139 // initialize both the header and fields | |
3140 __ jmp(initialize_object); | |
3141 } | |
3142 } | |
3143 | |
3144 // Allocation in the shared Eden, if allowed. | |
3145 // | |
3146 // rdx: instance size in bytes | |
3147 if (allow_shared_alloc) { | |
3148 __ bind(allocate_shared); | |
3149 | |
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3150 ExternalAddress top((address)Universe::heap()->top_addr()); |
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3151 ExternalAddress end((address)Universe::heap()->end_addr()); |
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3152 |
0 | 3153 const Register RtopAddr = rscratch1; |
3154 const Register RendAddr = rscratch2; | |
3155 | |
3156 __ lea(RtopAddr, top); | |
3157 __ lea(RendAddr, end); | |
304 | 3158 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3159 |
3160 // For retries rax gets set by cmpxchgq | |
3161 Label retry; | |
3162 __ bind(retry); | |
304 | 3163 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3164 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3165 __ jcc(Assembler::above, slow_case); |
3166 | |
3167 // Compare rax with the top addr, and if still equal, store the new | |
3168 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3169 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3170 // | |
3171 // rax: object begin | |
3172 // rbx: object end | |
3173 // rdx: instance size in bytes | |
3174 if (os::is_MP()) { | |
3175 __ lock(); | |
3176 } | |
304 | 3177 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3178 |
3179 // if someone beat us on the allocation, try again, otherwise continue | |
3180 __ jcc(Assembler::notEqual, retry); | |
3181 } | |
3182 | |
3183 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3184 // The object is initialized before the header. If the object size is | |
3185 // zero, go directly to the header initialization. | |
3186 __ bind(initialize_object); | |
3187 __ decrementl(rdx, sizeof(oopDesc)); | |
3188 __ jcc(Assembler::zero, initialize_header); | |
3189 | |
3190 // Initialize object fields | |
3191 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3192 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3193 { | |
3194 Label loop; | |
3195 __ bind(loop); | |
3196 __ movq(Address(rax, rdx, Address::times_8, | |
3197 sizeof(oopDesc) - oopSize), | |
3198 rcx); | |
3199 __ decrementl(rdx); | |
3200 __ jcc(Assembler::notZero, loop); | |
3201 } | |
3202 | |
3203 // initialize object header only. | |
3204 __ bind(initialize_header); | |
3205 if (UseBiasedLocking) { | |
304 | 3206 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); |
3207 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); | |
0 | 3208 } else { |
3209 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3210 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3211 } | |
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3212 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
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3213 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
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3214 __ store_klass(rax, rsi); // store klass last |
0 | 3215 __ jmp(done); |
3216 } | |
3217 | |
3218 { | |
3219 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); | |
3220 // Trigger dtrace event for fastpath | |
3221 __ push(atos); // save the return value | |
3222 __ call_VM_leaf( | |
3223 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3224 __ pop(atos); // restore the return value | |
3225 } | |
3226 | |
3227 // slow case | |
3228 __ bind(slow_case); | |
3229 __ get_constant_pool(c_rarg1); | |
3230 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3231 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3232 __ verify_oop(rax); | |
3233 | |
3234 // continue | |
3235 __ bind(done); | |
3236 } | |
3237 | |
3238 void TemplateTable::newarray() { | |
3239 transition(itos, atos); | |
3240 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3241 __ movl(c_rarg2, rax); | |
3242 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3243 c_rarg1, c_rarg2); | |
3244 } | |
3245 | |
3246 void TemplateTable::anewarray() { | |
3247 transition(itos, atos); | |
3248 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3249 __ get_constant_pool(c_rarg1); | |
3250 __ movl(c_rarg3, rax); | |
3251 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3252 c_rarg1, c_rarg2, c_rarg3); | |
3253 } | |
3254 | |
3255 void TemplateTable::arraylength() { | |
3256 transition(atos, itos); | |
3257 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3258 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3259 } | |
3260 | |
3261 void TemplateTable::checkcast() { | |
3262 transition(atos, atos); | |
3263 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3264 __ testptr(rax, rax); // object is in rax |
0 | 3265 __ jcc(Assembler::zero, is_null); |
3266 | |
3267 // Get cpool & tags index | |
3268 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3269 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3270 // See if bytecode has already been quicked | |
3271 __ cmpb(Address(rdx, rbx, | |
3272 Address::times_1, | |
3273 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3274 JVM_CONSTANT_Class); | |
3275 __ jcc(Assembler::equal, quicked); | |
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3276 __ push(atos); // save receiver for result, and for GC |
304 | 3277 __ mov(r12, rcx); // save rcx XXX |
0 | 3278 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3279 __ movq(rcx, r12); // restore rcx XXX |
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3280 __ reinit_heapbase(); |
0 | 3281 __ pop_ptr(rdx); // restore receiver |
3282 __ jmpb(resolved); | |
3283 | |
3284 // Get superklass in rax and subklass in rbx | |
3285 __ bind(quicked); | |
304 | 3286 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3287 __ movptr(rax, Address(rcx, rbx, | |
0 | 3288 Address::times_8, sizeof(constantPoolOopDesc))); |
3289 | |
3290 __ bind(resolved); | |
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3291 __ load_klass(rbx, rdx); |
0 | 3292 |
3293 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3294 // Superklass in rax. Subklass in rbx. | |
3295 __ gen_subtype_check(rbx, ok_is_subtype); | |
3296 | |
3297 // Come here on failure | |
3298 __ push_ptr(rdx); | |
3299 // object is at TOS | |
3300 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3301 | |
3302 // Come here on success | |
3303 __ bind(ok_is_subtype); | |
304 | 3304 __ mov(rax, rdx); // Restore object in rdx |
0 | 3305 |
3306 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3307 if (ProfileInterpreter) { | |
3308 __ jmp(done); | |
3309 __ bind(is_null); | |
3310 __ profile_null_seen(rcx); | |
3311 } else { | |
3312 __ bind(is_null); // same as 'done' | |
3313 } | |
3314 __ bind(done); | |
3315 } | |
3316 | |
3317 void TemplateTable::instanceof() { | |
3318 transition(atos, itos); | |
3319 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3320 __ testptr(rax, rax); |
0 | 3321 __ jcc(Assembler::zero, is_null); |
3322 | |
3323 // Get cpool & tags index | |
3324 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3325 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3326 // See if bytecode has already been quicked | |
3327 __ cmpb(Address(rdx, rbx, | |
3328 Address::times_1, | |
3329 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3330 JVM_CONSTANT_Class); | |
3331 __ jcc(Assembler::equal, quicked); | |
3332 | |
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3333 __ push(atos); // save receiver for result, and for GC |
304 | 3334 __ mov(r12, rcx); // save rcx |
0 | 3335 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3336 __ movq(rcx, r12); // restore rcx |
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3337 __ reinit_heapbase(); |
0 | 3338 __ pop_ptr(rdx); // restore receiver |
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3339 __ load_klass(rdx, rdx); |
0 | 3340 __ jmpb(resolved); |
3341 | |
3342 // Get superklass in rax and subklass in rdx | |
3343 __ bind(quicked); | |
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3344 __ load_klass(rdx, rax); |
304 | 3345 __ movptr(rax, Address(rcx, rbx, |
3346 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3347 |
3348 __ bind(resolved); | |
3349 | |
3350 // Generate subtype check. Blows rcx, rdi | |
3351 // Superklass in rax. Subklass in rdx. | |
3352 __ gen_subtype_check(rdx, ok_is_subtype); | |
3353 | |
3354 // Come here on failure | |
3355 __ xorl(rax, rax); | |
3356 __ jmpb(done); | |
3357 // Come here on success | |
3358 __ bind(ok_is_subtype); | |
3359 __ movl(rax, 1); | |
3360 | |
3361 // Collect counts on whether this test sees NULLs a lot or not. | |
3362 if (ProfileInterpreter) { | |
3363 __ jmp(done); | |
3364 __ bind(is_null); | |
3365 __ profile_null_seen(rcx); | |
3366 } else { | |
3367 __ bind(is_null); // same as 'done' | |
3368 } | |
3369 __ bind(done); | |
3370 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3371 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3372 } | |
3373 | |
3374 //----------------------------------------------------------------------------- | |
3375 // Breakpoints | |
3376 void TemplateTable::_breakpoint() { | |
3377 // Note: We get here even if we are single stepping.. | |
3378 // jbug inists on setting breakpoints at every bytecode | |
3379 // even if we are in single step mode. | |
3380 | |
3381 transition(vtos, vtos); | |
3382 | |
3383 // get the unpatched byte code | |
3384 __ get_method(c_rarg1); | |
3385 __ call_VM(noreg, | |
3386 CAST_FROM_FN_PTR(address, | |
3387 InterpreterRuntime::get_original_bytecode_at), | |
3388 c_rarg1, r13); | |
304 | 3389 __ mov(rbx, rax); |
0 | 3390 |
3391 // post the breakpoint event | |
3392 __ get_method(c_rarg1); | |
3393 __ call_VM(noreg, | |
3394 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3395 c_rarg1, r13); | |
3396 | |
3397 // complete the execution of original bytecode | |
3398 __ dispatch_only_normal(vtos); | |
3399 } | |
3400 | |
3401 //----------------------------------------------------------------------------- | |
3402 // Exceptions | |
3403 | |
3404 void TemplateTable::athrow() { | |
3405 transition(atos, vtos); | |
3406 __ null_check(rax); | |
3407 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3408 } | |
3409 | |
3410 //----------------------------------------------------------------------------- | |
3411 // Synchronization | |
3412 // | |
3413 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3414 // in the assembly code structure as well | |
3415 // | |
3416 // Stack layout: | |
3417 // | |
3418 // [expressions ] <--- rsp = expression stack top | |
3419 // .. | |
3420 // [expressions ] | |
3421 // [monitor entry] <--- monitor block top = expression stack bot | |
3422 // .. | |
3423 // [monitor entry] | |
3424 // [frame data ] <--- monitor block bot | |
3425 // ... | |
3426 // [saved rbp ] <--- rbp | |
3427 void TemplateTable::monitorenter() { | |
3428 transition(atos, vtos); | |
3429 | |
3430 // check for NULL object | |
3431 __ null_check(rax); | |
3432 | |
3433 const Address monitor_block_top( | |
3434 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3435 const Address monitor_block_bot( | |
3436 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3437 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3438 | |
3439 Label allocated; | |
3440 | |
3441 // initialize entry pointer | |
3442 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3443 | |
3444 // find a free slot in the monitor block (result in c_rarg1) | |
3445 { | |
3446 Label entry, loop, exit; | |
304 | 3447 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3448 // starting with top-most entry |
304 | 3449 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3450 // of monitor block |
3451 __ jmpb(entry); | |
3452 | |
3453 __ bind(loop); | |
3454 // check if current entry is used | |
304 | 3455 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3456 // if not used then remember entry in c_rarg1 |
304 | 3457 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3458 // check if current entry is for same object |
304 | 3459 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3460 // if same object then stop searching |
3461 __ jccb(Assembler::equal, exit); | |
3462 // otherwise advance to next entry | |
304 | 3463 __ addptr(c_rarg3, entry_size); |
0 | 3464 __ bind(entry); |
3465 // check if bottom reached | |
304 | 3466 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3467 // if not at bottom then check this entry |
3468 __ jcc(Assembler::notEqual, loop); | |
3469 __ bind(exit); | |
3470 } | |
3471 | |
304 | 3472 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3473 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3474 | |
3475 // allocate one if there's no free slot | |
3476 { | |
3477 Label entry, loop; | |
304 | 3478 // 1. compute new pointers // rsp: old expression stack top |
3479 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3480 __ subptr(rsp, entry_size); // move expression stack top | |
3481 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3482 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3483 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3484 __ jmp(entry); |
3485 // 2. move expression stack contents | |
3486 __ bind(loop); | |
304 | 3487 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3488 // word from old location | |
3489 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3490 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3491 __ bind(entry); |
304 | 3492 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3493 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3494 // copy next word | |
3495 } | |
3496 | |
3497 // call run-time routine | |
3498 // c_rarg1: points to monitor entry | |
3499 __ bind(allocated); | |
3500 | |
3501 // Increment bcp to point to the next bytecode, so exception | |
3502 // handling for async. exceptions work correctly. | |
3503 // The object has already been poped from the stack, so the | |
3504 // expression stack looks correct. | |
304 | 3505 __ increment(r13); |
0 | 3506 |
3507 // store object | |
304 | 3508 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3509 __ lock_object(c_rarg1); |
3510 | |
3511 // check to make sure this monitor doesn't cause stack overflow after locking | |
3512 __ save_bcp(); // in case of exception | |
3513 __ generate_stack_overflow_check(0); | |
3514 | |
3515 // The bcp has already been incremented. Just need to dispatch to | |
3516 // next instruction. | |
3517 __ dispatch_next(vtos); | |
3518 } | |
3519 | |
3520 | |
3521 void TemplateTable::monitorexit() { | |
3522 transition(atos, vtos); | |
3523 | |
3524 // check for NULL object | |
3525 __ null_check(rax); | |
3526 | |
3527 const Address monitor_block_top( | |
3528 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3529 const Address monitor_block_bot( | |
3530 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3531 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3532 | |
3533 Label found; | |
3534 | |
3535 // find matching slot | |
3536 { | |
3537 Label entry, loop; | |
304 | 3538 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3539 // starting with top-most entry |
304 | 3540 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3541 // of monitor block |
3542 __ jmpb(entry); | |
3543 | |
3544 __ bind(loop); | |
3545 // check if current entry is for same object | |
304 | 3546 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3547 // if same object then stop searching |
3548 __ jcc(Assembler::equal, found); | |
3549 // otherwise advance to next entry | |
304 | 3550 __ addptr(c_rarg1, entry_size); |
0 | 3551 __ bind(entry); |
3552 // check if bottom reached | |
304 | 3553 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3554 // if not at bottom then check this entry |
3555 __ jcc(Assembler::notEqual, loop); | |
3556 } | |
3557 | |
3558 // error handling. Unlocking was not block-structured | |
3559 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3560 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3561 __ should_not_reach_here(); | |
3562 | |
3563 // call run-time routine | |
3564 // rsi: points to monitor entry | |
3565 __ bind(found); | |
3566 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3567 __ unlock_object(c_rarg1); | |
3568 __ pop_ptr(rax); // discard object | |
3569 } | |
3570 | |
3571 | |
3572 // Wide instructions | |
3573 void TemplateTable::wide() { | |
3574 transition(vtos, vtos); | |
3575 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3576 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3577 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3578 // Note: the r13 increment step is part of the individual wide | |
3579 // bytecode implementations | |
3580 } | |
3581 | |
3582 | |
3583 // Multi arrays | |
3584 void TemplateTable::multianewarray() { | |
3585 transition(vtos, atos); | |
3586 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3587 // last dim is on top of stack; we want address of first one: | |
3588 // first_addr = last_addr + (ndims - 1) * wordSize | |
3589 if (TaggedStackInterpreter) __ shll(rax, 1); // index*2 | |
304 | 3590 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3591 call_VM(rax, |
3592 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3593 c_rarg1); | |
3594 __ load_unsigned_byte(rbx, at_bcp(3)); | |
3595 if (TaggedStackInterpreter) __ shll(rbx, 1); // index*2 | |
304 | 3596 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3597 } |
304 | 3598 #endif // !CC_INTERP |