Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 1882:ee0d26abaad3
Merge
author | kamg |
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date | Tue, 26 Oct 2010 16:48:28 -0700 |
parents | d55217dc206f |
children | 3b2dea75431e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
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) { | |
1506 | 61 return Address(r14, r, Address::times_8); |
0 | 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 | |
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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_null(Address(rdx, 0)); |
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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_null(obj); |
342
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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_null(obj); |
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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 | |
1108 | 206 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), scratch, r13, bc); |
0 | 207 #ifndef ASSERT |
208 __ jmpb(patch_done); | |
1108 | 209 #else |
210 __ jmp(patch_done); | |
211 #endif | |
0 | 212 __ bind(fast_patch); |
213 } | |
1108 | 214 #ifdef ASSERT |
0 | 215 Label okay; |
216 __ load_unsigned_byte(scratch, at_bcp(0)); | |
217 __ cmpl(scratch, (int) Bytecodes::java_code(bytecode)); | |
218 __ jcc(Assembler::equal, okay); | |
219 __ cmpl(scratch, bc); | |
220 __ jcc(Assembler::equal, okay); | |
221 __ stop("patching the wrong bytecode"); | |
222 __ bind(okay); | |
223 #endif | |
224 // patch bytecode | |
225 __ movb(at_bcp(0), bc); | |
226 __ bind(patch_done); | |
227 } | |
228 | |
229 | |
230 // Individual instructions | |
231 | |
232 void TemplateTable::nop() { | |
233 transition(vtos, vtos); | |
234 // nothing to do | |
235 } | |
236 | |
237 void TemplateTable::shouldnotreachhere() { | |
238 transition(vtos, vtos); | |
239 __ stop("shouldnotreachhere bytecode"); | |
240 } | |
241 | |
242 void TemplateTable::aconst_null() { | |
243 transition(vtos, atos); | |
244 __ xorl(rax, rax); | |
245 } | |
246 | |
247 void TemplateTable::iconst(int value) { | |
248 transition(vtos, itos); | |
249 if (value == 0) { | |
250 __ xorl(rax, rax); | |
251 } else { | |
252 __ movl(rax, value); | |
253 } | |
254 } | |
255 | |
256 void TemplateTable::lconst(int value) { | |
257 transition(vtos, ltos); | |
258 if (value == 0) { | |
259 __ xorl(rax, rax); | |
260 } else { | |
261 __ movl(rax, value); | |
262 } | |
263 } | |
264 | |
265 void TemplateTable::fconst(int value) { | |
266 transition(vtos, ftos); | |
267 static float one = 1.0f, two = 2.0f; | |
268 switch (value) { | |
269 case 0: | |
270 __ xorps(xmm0, xmm0); | |
271 break; | |
272 case 1: | |
273 __ movflt(xmm0, ExternalAddress((address) &one)); | |
274 break; | |
275 case 2: | |
276 __ movflt(xmm0, ExternalAddress((address) &two)); | |
277 break; | |
278 default: | |
279 ShouldNotReachHere(); | |
280 break; | |
281 } | |
282 } | |
283 | |
284 void TemplateTable::dconst(int value) { | |
285 transition(vtos, dtos); | |
286 static double one = 1.0; | |
287 switch (value) { | |
288 case 0: | |
289 __ xorpd(xmm0, xmm0); | |
290 break; | |
291 case 1: | |
292 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
293 break; | |
294 default: | |
295 ShouldNotReachHere(); | |
296 break; | |
297 } | |
298 } | |
299 | |
300 void TemplateTable::bipush() { | |
301 transition(vtos, itos); | |
302 __ load_signed_byte(rax, at_bcp(1)); | |
303 } | |
304 | |
305 void TemplateTable::sipush() { | |
306 transition(vtos, itos); | |
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307 __ load_unsigned_short(rax, at_bcp(1)); |
0 | 308 __ bswapl(rax); |
309 __ sarl(rax, 16); | |
310 } | |
311 | |
312 void TemplateTable::ldc(bool wide) { | |
313 transition(vtos, vtos); | |
314 Label call_ldc, notFloat, notClass, Done; | |
315 | |
316 if (wide) { | |
317 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
318 } else { | |
319 __ load_unsigned_byte(rbx, at_bcp(1)); | |
320 } | |
321 | |
322 __ get_cpool_and_tags(rcx, rax); | |
323 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
324 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
325 | |
326 // get type | |
327 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
328 | |
329 // unresolved string - get the resolved string | |
330 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
331 __ jccb(Assembler::equal, call_ldc); | |
332 | |
333 // unresolved class - get the resolved class | |
334 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
335 __ jccb(Assembler::equal, call_ldc); | |
336 | |
337 // unresolved class in error state - call into runtime to throw the error | |
338 // from the first resolution attempt | |
339 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
340 __ jccb(Assembler::equal, call_ldc); | |
341 | |
342 // resolved class - need to call vm to get java mirror of the class | |
343 __ cmpl(rdx, JVM_CONSTANT_Class); | |
344 __ jcc(Assembler::notEqual, notClass); | |
345 | |
346 __ bind(call_ldc); | |
347 __ movl(c_rarg1, wide); | |
348 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
349 __ push_ptr(rax); | |
350 __ verify_oop(rax); | |
351 __ jmp(Done); | |
352 | |
353 __ bind(notClass); | |
354 __ cmpl(rdx, JVM_CONSTANT_Float); | |
355 __ jccb(Assembler::notEqual, notFloat); | |
356 // ftos | |
357 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
358 __ push_f(); | |
359 __ jmp(Done); | |
360 | |
361 __ bind(notFloat); | |
362 #ifdef ASSERT | |
363 { | |
364 Label L; | |
365 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
366 __ jcc(Assembler::equal, L); | |
367 __ cmpl(rdx, JVM_CONSTANT_String); | |
368 __ jcc(Assembler::equal, L); | |
369 __ stop("unexpected tag type in ldc"); | |
370 __ bind(L); | |
371 } | |
372 #endif | |
373 // atos and itos | |
374 Label isOop; | |
375 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
376 __ jcc(Assembler::notEqual, isOop); | |
377 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
378 __ push_i(rax); | |
379 __ jmp(Done); | |
380 | |
381 __ bind(isOop); | |
304 | 382 __ movptr(rax, Address(rcx, rbx, Address::times_8, base_offset)); |
0 | 383 __ push_ptr(rax); |
384 | |
385 if (VerifyOops) { | |
386 __ verify_oop(rax); | |
387 } | |
388 | |
389 __ bind(Done); | |
390 } | |
391 | |
1602 | 392 // Fast path for caching oop constants. |
393 // %%% We should use this to handle Class and String constants also. | |
394 // %%% It will simplify the ldc/primitive path considerably. | |
395 void TemplateTable::fast_aldc(bool wide) { | |
396 transition(vtos, atos); | |
397 | |
398 if (!EnableMethodHandles) { | |
399 // We should not encounter this bytecode if !EnableMethodHandles. | |
400 // The verifier will stop it. However, if we get past the verifier, | |
401 // this will stop the thread in a reasonable way, without crashing the JVM. | |
402 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
403 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
404 // the call_VM checks for exception, so we should never return here. | |
405 __ should_not_reach_here(); | |
406 return; | |
407 } | |
408 | |
409 const Register cache = rcx; | |
410 const Register index = rdx; | |
411 | |
412 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
413 if (VerifyOops) { | |
414 __ verify_oop(rax); | |
415 } | |
416 } | |
417 | |
0 | 418 void TemplateTable::ldc2_w() { |
419 transition(vtos, vtos); | |
420 Label Long, Done; | |
421 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
422 | |
423 __ get_cpool_and_tags(rcx, rax); | |
424 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
425 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
426 | |
427 // get type | |
428 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
429 JVM_CONSTANT_Double); | |
430 __ jccb(Assembler::notEqual, Long); | |
431 // dtos | |
432 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
433 __ push_d(); | |
434 __ jmpb(Done); | |
435 | |
436 __ bind(Long); | |
437 // ltos | |
438 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
439 __ push_l(); | |
440 | |
441 __ bind(Done); | |
442 } | |
443 | |
444 void TemplateTable::locals_index(Register reg, int offset) { | |
445 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 446 __ negptr(reg); |
0 | 447 } |
448 | |
449 void TemplateTable::iload() { | |
450 transition(vtos, itos); | |
451 if (RewriteFrequentPairs) { | |
452 Label rewrite, done; | |
453 const Register bc = c_rarg3; | |
454 assert(rbx != bc, "register damaged"); | |
455 | |
456 // get next byte | |
457 __ load_unsigned_byte(rbx, | |
458 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
459 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
460 // last two iloads in a pair. Comparing against fast_iload means that | |
461 // the next bytecode is neither an iload or a caload, and therefore | |
462 // an iload pair. | |
463 __ cmpl(rbx, Bytecodes::_iload); | |
464 __ jcc(Assembler::equal, done); | |
465 | |
466 __ cmpl(rbx, Bytecodes::_fast_iload); | |
467 __ movl(bc, Bytecodes::_fast_iload2); | |
468 __ jccb(Assembler::equal, rewrite); | |
469 | |
470 // if _caload, rewrite to fast_icaload | |
471 __ cmpl(rbx, Bytecodes::_caload); | |
472 __ movl(bc, Bytecodes::_fast_icaload); | |
473 __ jccb(Assembler::equal, rewrite); | |
474 | |
475 // rewrite so iload doesn't check again. | |
476 __ movl(bc, Bytecodes::_fast_iload); | |
477 | |
478 // rewrite | |
479 // bc: fast bytecode | |
480 __ bind(rewrite); | |
481 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
482 __ bind(done); | |
483 } | |
484 | |
485 // Get the local value into tos | |
486 locals_index(rbx); | |
487 __ movl(rax, iaddress(rbx)); | |
488 } | |
489 | |
490 void TemplateTable::fast_iload2() { | |
491 transition(vtos, itos); | |
492 locals_index(rbx); | |
493 __ movl(rax, iaddress(rbx)); | |
494 __ push(itos); | |
495 locals_index(rbx, 3); | |
496 __ movl(rax, iaddress(rbx)); | |
497 } | |
498 | |
499 void TemplateTable::fast_iload() { | |
500 transition(vtos, itos); | |
501 locals_index(rbx); | |
502 __ movl(rax, iaddress(rbx)); | |
503 } | |
504 | |
505 void TemplateTable::lload() { | |
506 transition(vtos, ltos); | |
507 locals_index(rbx); | |
508 __ movq(rax, laddress(rbx)); | |
509 } | |
510 | |
511 void TemplateTable::fload() { | |
512 transition(vtos, ftos); | |
513 locals_index(rbx); | |
514 __ movflt(xmm0, faddress(rbx)); | |
515 } | |
516 | |
517 void TemplateTable::dload() { | |
518 transition(vtos, dtos); | |
519 locals_index(rbx); | |
520 __ movdbl(xmm0, daddress(rbx)); | |
521 } | |
522 | |
523 void TemplateTable::aload() { | |
524 transition(vtos, atos); | |
525 locals_index(rbx); | |
304 | 526 __ movptr(rax, aaddress(rbx)); |
0 | 527 } |
528 | |
529 void TemplateTable::locals_index_wide(Register reg) { | |
530 __ movl(reg, at_bcp(2)); | |
531 __ bswapl(reg); | |
532 __ shrl(reg, 16); | |
304 | 533 __ negptr(reg); |
0 | 534 } |
535 | |
536 void TemplateTable::wide_iload() { | |
537 transition(vtos, itos); | |
538 locals_index_wide(rbx); | |
539 __ movl(rax, iaddress(rbx)); | |
540 } | |
541 | |
542 void TemplateTable::wide_lload() { | |
543 transition(vtos, ltos); | |
544 locals_index_wide(rbx); | |
545 __ movq(rax, laddress(rbx)); | |
546 } | |
547 | |
548 void TemplateTable::wide_fload() { | |
549 transition(vtos, ftos); | |
550 locals_index_wide(rbx); | |
551 __ movflt(xmm0, faddress(rbx)); | |
552 } | |
553 | |
554 void TemplateTable::wide_dload() { | |
555 transition(vtos, dtos); | |
556 locals_index_wide(rbx); | |
557 __ movdbl(xmm0, daddress(rbx)); | |
558 } | |
559 | |
560 void TemplateTable::wide_aload() { | |
561 transition(vtos, atos); | |
562 locals_index_wide(rbx); | |
304 | 563 __ movptr(rax, aaddress(rbx)); |
0 | 564 } |
565 | |
566 void TemplateTable::index_check(Register array, Register index) { | |
567 // destroys rbx | |
568 // check array | |
569 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
570 // sign extend index for use by indexed load | |
304 | 571 __ movl2ptr(index, index); |
0 | 572 // check index |
573 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
574 if (index != rbx) { | |
575 // ??? convention: move aberrant index into ebx for exception message | |
576 assert(rbx != array, "different registers"); | |
577 __ movl(rbx, index); | |
578 } | |
579 __ jump_cc(Assembler::aboveEqual, | |
580 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
581 } | |
582 | |
583 void TemplateTable::iaload() { | |
584 transition(itos, itos); | |
585 __ pop_ptr(rdx); | |
586 // eax: index | |
587 // rdx: array | |
588 index_check(rdx, rax); // kills rbx | |
589 __ movl(rax, Address(rdx, rax, | |
590 Address::times_4, | |
591 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
592 } | |
593 | |
594 void TemplateTable::laload() { | |
595 transition(itos, ltos); | |
596 __ pop_ptr(rdx); | |
597 // eax: index | |
598 // rdx: array | |
599 index_check(rdx, rax); // kills rbx | |
600 __ movq(rax, Address(rdx, rbx, | |
601 Address::times_8, | |
602 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
603 } | |
604 | |
605 void TemplateTable::faload() { | |
606 transition(itos, ftos); | |
607 __ pop_ptr(rdx); | |
608 // eax: index | |
609 // rdx: array | |
610 index_check(rdx, rax); // kills rbx | |
611 __ movflt(xmm0, Address(rdx, rax, | |
612 Address::times_4, | |
613 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
614 } | |
615 | |
616 void TemplateTable::daload() { | |
617 transition(itos, dtos); | |
618 __ pop_ptr(rdx); | |
619 // eax: index | |
620 // rdx: array | |
621 index_check(rdx, rax); // kills rbx | |
622 __ movdbl(xmm0, Address(rdx, rax, | |
623 Address::times_8, | |
624 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
625 } | |
626 | |
627 void TemplateTable::aaload() { | |
628 transition(itos, atos); | |
629 __ pop_ptr(rdx); | |
630 // eax: index | |
631 // rdx: array | |
632 index_check(rdx, rax); // kills rbx | |
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633 __ load_heap_oop(rax, Address(rdx, rax, |
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634 UseCompressedOops ? Address::times_4 : Address::times_8, |
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635 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 636 } |
637 | |
638 void TemplateTable::baload() { | |
639 transition(itos, itos); | |
640 __ pop_ptr(rdx); | |
641 // eax: index | |
642 // rdx: array | |
643 index_check(rdx, rax); // kills rbx | |
644 __ load_signed_byte(rax, | |
645 Address(rdx, rax, | |
646 Address::times_1, | |
647 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
648 } | |
649 | |
650 void TemplateTable::caload() { | |
651 transition(itos, itos); | |
652 __ pop_ptr(rdx); | |
653 // eax: index | |
654 // rdx: array | |
655 index_check(rdx, rax); // kills rbx | |
622
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656 __ load_unsigned_short(rax, |
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657 Address(rdx, rax, |
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658 Address::times_2, |
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659 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 660 } |
661 | |
662 // iload followed by caload frequent pair | |
663 void TemplateTable::fast_icaload() { | |
664 transition(vtos, itos); | |
665 // load index out of locals | |
666 locals_index(rbx); | |
667 __ movl(rax, iaddress(rbx)); | |
668 | |
669 // eax: index | |
670 // rdx: array | |
671 __ pop_ptr(rdx); | |
672 index_check(rdx, rax); // kills rbx | |
622
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673 __ load_unsigned_short(rax, |
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674 Address(rdx, rax, |
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675 Address::times_2, |
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676 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 677 } |
678 | |
679 void TemplateTable::saload() { | |
680 transition(itos, itos); | |
681 __ pop_ptr(rdx); | |
682 // eax: index | |
683 // rdx: array | |
684 index_check(rdx, rax); // kills rbx | |
622
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685 __ load_signed_short(rax, |
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686 Address(rdx, rax, |
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687 Address::times_2, |
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688 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 689 } |
690 | |
691 void TemplateTable::iload(int n) { | |
692 transition(vtos, itos); | |
693 __ movl(rax, iaddress(n)); | |
694 } | |
695 | |
696 void TemplateTable::lload(int n) { | |
697 transition(vtos, ltos); | |
698 __ movq(rax, laddress(n)); | |
699 } | |
700 | |
701 void TemplateTable::fload(int n) { | |
702 transition(vtos, ftos); | |
703 __ movflt(xmm0, faddress(n)); | |
704 } | |
705 | |
706 void TemplateTable::dload(int n) { | |
707 transition(vtos, dtos); | |
708 __ movdbl(xmm0, daddress(n)); | |
709 } | |
710 | |
711 void TemplateTable::aload(int n) { | |
712 transition(vtos, atos); | |
304 | 713 __ movptr(rax, aaddress(n)); |
0 | 714 } |
715 | |
716 void TemplateTable::aload_0() { | |
717 transition(vtos, atos); | |
718 // According to bytecode histograms, the pairs: | |
719 // | |
720 // _aload_0, _fast_igetfield | |
721 // _aload_0, _fast_agetfield | |
722 // _aload_0, _fast_fgetfield | |
723 // | |
724 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
725 // _aload_0 bytecode checks if the next bytecode is either | |
726 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
727 // rewrites the current bytecode into a pair bytecode; otherwise it | |
728 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
729 // the pair check anymore. | |
730 // | |
731 // Note: If the next bytecode is _getfield, the rewrite must be | |
732 // delayed, otherwise we may miss an opportunity for a pair. | |
733 // | |
734 // Also rewrite frequent pairs | |
735 // aload_0, aload_1 | |
736 // aload_0, iload_1 | |
737 // These bytecodes with a small amount of code are most profitable | |
738 // to rewrite | |
739 if (RewriteFrequentPairs) { | |
740 Label rewrite, done; | |
741 const Register bc = c_rarg3; | |
742 assert(rbx != bc, "register damaged"); | |
743 // get next byte | |
744 __ load_unsigned_byte(rbx, | |
745 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
746 | |
747 // do actual aload_0 | |
748 aload(0); | |
749 | |
750 // if _getfield then wait with rewrite | |
751 __ cmpl(rbx, Bytecodes::_getfield); | |
752 __ jcc(Assembler::equal, done); | |
753 | |
754 // if _igetfield then reqrite to _fast_iaccess_0 | |
755 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
756 Bytecodes::_aload_0, | |
757 "fix bytecode definition"); | |
758 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
759 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
760 __ jccb(Assembler::equal, rewrite); | |
761 | |
762 // if _agetfield then reqrite to _fast_aaccess_0 | |
763 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
764 Bytecodes::_aload_0, | |
765 "fix bytecode definition"); | |
766 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
767 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
768 __ jccb(Assembler::equal, rewrite); | |
769 | |
770 // if _fgetfield then reqrite to _fast_faccess_0 | |
771 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
772 Bytecodes::_aload_0, | |
773 "fix bytecode definition"); | |
774 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
775 __ movl(bc, Bytecodes::_fast_faccess_0); | |
776 __ jccb(Assembler::equal, rewrite); | |
777 | |
778 // else rewrite to _fast_aload0 | |
779 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
780 Bytecodes::_aload_0, | |
781 "fix bytecode definition"); | |
782 __ movl(bc, Bytecodes::_fast_aload_0); | |
783 | |
784 // rewrite | |
785 // bc: fast bytecode | |
786 __ bind(rewrite); | |
787 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
788 | |
789 __ bind(done); | |
790 } else { | |
791 aload(0); | |
792 } | |
793 } | |
794 | |
795 void TemplateTable::istore() { | |
796 transition(itos, vtos); | |
797 locals_index(rbx); | |
798 __ movl(iaddress(rbx), rax); | |
799 } | |
800 | |
801 void TemplateTable::lstore() { | |
802 transition(ltos, vtos); | |
803 locals_index(rbx); | |
804 __ movq(laddress(rbx), rax); | |
805 } | |
806 | |
807 void TemplateTable::fstore() { | |
808 transition(ftos, vtos); | |
809 locals_index(rbx); | |
810 __ movflt(faddress(rbx), xmm0); | |
811 } | |
812 | |
813 void TemplateTable::dstore() { | |
814 transition(dtos, vtos); | |
815 locals_index(rbx); | |
816 __ movdbl(daddress(rbx), xmm0); | |
817 } | |
818 | |
819 void TemplateTable::astore() { | |
820 transition(vtos, vtos); | |
1506 | 821 __ pop_ptr(rax); |
0 | 822 locals_index(rbx); |
304 | 823 __ movptr(aaddress(rbx), rax); |
0 | 824 } |
825 | |
826 void TemplateTable::wide_istore() { | |
827 transition(vtos, vtos); | |
828 __ pop_i(); | |
829 locals_index_wide(rbx); | |
830 __ movl(iaddress(rbx), rax); | |
831 } | |
832 | |
833 void TemplateTable::wide_lstore() { | |
834 transition(vtos, vtos); | |
835 __ pop_l(); | |
836 locals_index_wide(rbx); | |
837 __ movq(laddress(rbx), rax); | |
838 } | |
839 | |
840 void TemplateTable::wide_fstore() { | |
841 transition(vtos, vtos); | |
842 __ pop_f(); | |
843 locals_index_wide(rbx); | |
844 __ movflt(faddress(rbx), xmm0); | |
845 } | |
846 | |
847 void TemplateTable::wide_dstore() { | |
848 transition(vtos, vtos); | |
849 __ pop_d(); | |
850 locals_index_wide(rbx); | |
851 __ movdbl(daddress(rbx), xmm0); | |
852 } | |
853 | |
854 void TemplateTable::wide_astore() { | |
855 transition(vtos, vtos); | |
1506 | 856 __ pop_ptr(rax); |
0 | 857 locals_index_wide(rbx); |
304 | 858 __ movptr(aaddress(rbx), rax); |
0 | 859 } |
860 | |
861 void TemplateTable::iastore() { | |
862 transition(itos, vtos); | |
863 __ pop_i(rbx); | |
864 __ pop_ptr(rdx); | |
865 // eax: value | |
866 // ebx: index | |
867 // rdx: array | |
868 index_check(rdx, rbx); // prefer index in ebx | |
869 __ movl(Address(rdx, rbx, | |
870 Address::times_4, | |
871 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
872 rax); | |
873 } | |
874 | |
875 void TemplateTable::lastore() { | |
876 transition(ltos, vtos); | |
877 __ pop_i(rbx); | |
878 __ pop_ptr(rdx); | |
879 // rax: value | |
880 // ebx: index | |
881 // rdx: array | |
882 index_check(rdx, rbx); // prefer index in ebx | |
883 __ movq(Address(rdx, rbx, | |
884 Address::times_8, | |
885 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
886 rax); | |
887 } | |
888 | |
889 void TemplateTable::fastore() { | |
890 transition(ftos, vtos); | |
891 __ pop_i(rbx); | |
892 __ pop_ptr(rdx); | |
893 // xmm0: value | |
894 // ebx: index | |
895 // rdx: array | |
896 index_check(rdx, rbx); // prefer index in ebx | |
897 __ movflt(Address(rdx, rbx, | |
898 Address::times_4, | |
899 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
900 xmm0); | |
901 } | |
902 | |
903 void TemplateTable::dastore() { | |
904 transition(dtos, vtos); | |
905 __ pop_i(rbx); | |
906 __ pop_ptr(rdx); | |
907 // xmm0: value | |
908 // ebx: index | |
909 // rdx: array | |
910 index_check(rdx, rbx); // prefer index in ebx | |
911 __ movdbl(Address(rdx, rbx, | |
912 Address::times_8, | |
913 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
914 xmm0); | |
915 } | |
916 | |
917 void TemplateTable::aastore() { | |
918 Label is_null, ok_is_subtype, done; | |
919 transition(vtos, vtos); | |
920 // stack: ..., array, index, value | |
304 | 921 __ movptr(rax, at_tos()); // value |
0 | 922 __ movl(rcx, at_tos_p1()); // index |
304 | 923 __ movptr(rdx, at_tos_p2()); // array |
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924 |
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925 Address element_address(rdx, rcx, |
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926 UseCompressedOops? Address::times_4 : Address::times_8, |
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927 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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928 |
0 | 929 index_check(rdx, rcx); // kills rbx |
930 // do array store check - check for NULL value first | |
304 | 931 __ testptr(rax, rax); |
0 | 932 __ jcc(Assembler::zero, is_null); |
933 | |
934 // Move subklass into rbx | |
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935 __ load_klass(rbx, rax); |
0 | 936 // Move superklass into rax |
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937 __ load_klass(rax, rdx); |
304 | 938 __ movptr(rax, Address(rax, |
939 sizeof(oopDesc) + | |
940 objArrayKlass::element_klass_offset_in_bytes())); | |
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941 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 942 __ lea(rdx, element_address); |
0 | 943 |
944 // Generate subtype check. Blows rcx, rdi | |
945 // Superklass in rax. Subklass in rbx. | |
946 __ gen_subtype_check(rbx, ok_is_subtype); | |
947 | |
948 // Come here on failure | |
949 // object is at TOS | |
950 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
951 | |
952 // Come here on success | |
953 __ bind(ok_is_subtype); | |
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954 |
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955 // Get the value we will store |
362 | 956 __ movptr(rax, at_tos()); |
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957 // Now store using the appropriate barrier |
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958 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 959 __ jmp(done); |
960 | |
961 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
962 __ bind(is_null); | |
963 __ profile_null_seen(rbx); | |
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964 |
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965 // Store a NULL |
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966 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 967 |
968 // Pop stack arguments | |
969 __ bind(done); | |
1506 | 970 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 971 } |
972 | |
973 void TemplateTable::bastore() { | |
974 transition(itos, vtos); | |
975 __ pop_i(rbx); | |
976 __ pop_ptr(rdx); | |
977 // eax: value | |
978 // ebx: index | |
979 // rdx: array | |
980 index_check(rdx, rbx); // prefer index in ebx | |
981 __ movb(Address(rdx, rbx, | |
982 Address::times_1, | |
983 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
984 rax); | |
985 } | |
986 | |
987 void TemplateTable::castore() { | |
988 transition(itos, vtos); | |
989 __ pop_i(rbx); | |
990 __ pop_ptr(rdx); | |
991 // eax: value | |
992 // ebx: index | |
993 // rdx: array | |
994 index_check(rdx, rbx); // prefer index in ebx | |
995 __ movw(Address(rdx, rbx, | |
996 Address::times_2, | |
997 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
998 rax); | |
999 } | |
1000 | |
1001 void TemplateTable::sastore() { | |
1002 castore(); | |
1003 } | |
1004 | |
1005 void TemplateTable::istore(int n) { | |
1006 transition(itos, vtos); | |
1007 __ movl(iaddress(n), rax); | |
1008 } | |
1009 | |
1010 void TemplateTable::lstore(int n) { | |
1011 transition(ltos, vtos); | |
1012 __ movq(laddress(n), rax); | |
1013 } | |
1014 | |
1015 void TemplateTable::fstore(int n) { | |
1016 transition(ftos, vtos); | |
1017 __ movflt(faddress(n), xmm0); | |
1018 } | |
1019 | |
1020 void TemplateTable::dstore(int n) { | |
1021 transition(dtos, vtos); | |
1022 __ movdbl(daddress(n), xmm0); | |
1023 } | |
1024 | |
1025 void TemplateTable::astore(int n) { | |
1026 transition(vtos, vtos); | |
1506 | 1027 __ pop_ptr(rax); |
304 | 1028 __ movptr(aaddress(n), rax); |
0 | 1029 } |
1030 | |
1031 void TemplateTable::pop() { | |
1032 transition(vtos, vtos); | |
1506 | 1033 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1034 } |
1035 | |
1036 void TemplateTable::pop2() { | |
1037 transition(vtos, vtos); | |
1506 | 1038 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1039 } |
1040 | |
1041 void TemplateTable::dup() { | |
1042 transition(vtos, vtos); | |
1506 | 1043 __ load_ptr(0, rax); |
1044 __ push_ptr(rax); | |
0 | 1045 // stack: ..., a, a |
1046 } | |
1047 | |
1048 void TemplateTable::dup_x1() { | |
1049 transition(vtos, vtos); | |
1050 // stack: ..., a, b | |
1506 | 1051 __ load_ptr( 0, rax); // load b |
1052 __ load_ptr( 1, rcx); // load a | |
1053 __ store_ptr(1, rax); // store b | |
1054 __ store_ptr(0, rcx); // store a | |
1055 __ push_ptr(rax); // push b | |
0 | 1056 // stack: ..., b, a, b |
1057 } | |
1058 | |
1059 void TemplateTable::dup_x2() { | |
1060 transition(vtos, vtos); | |
1061 // stack: ..., a, b, c | |
1506 | 1062 __ load_ptr( 0, rax); // load c |
1063 __ load_ptr( 2, rcx); // load a | |
1064 __ store_ptr(2, rax); // store c in a | |
1065 __ push_ptr(rax); // push c | |
0 | 1066 // stack: ..., c, b, c, c |
1506 | 1067 __ load_ptr( 2, rax); // load b |
1068 __ store_ptr(2, rcx); // store a in b | |
0 | 1069 // stack: ..., c, a, c, c |
1506 | 1070 __ store_ptr(1, rax); // store b in c |
0 | 1071 // stack: ..., c, a, b, c |
1072 } | |
1073 | |
1074 void TemplateTable::dup2() { | |
1075 transition(vtos, vtos); | |
1076 // stack: ..., a, b | |
1506 | 1077 __ load_ptr(1, rax); // load a |
1078 __ push_ptr(rax); // push a | |
1079 __ load_ptr(1, rax); // load b | |
1080 __ push_ptr(rax); // push b | |
0 | 1081 // stack: ..., a, b, a, b |
1082 } | |
1083 | |
1084 void TemplateTable::dup2_x1() { | |
1085 transition(vtos, vtos); | |
1086 // stack: ..., a, b, c | |
1506 | 1087 __ load_ptr( 0, rcx); // load c |
1088 __ load_ptr( 1, rax); // load b | |
1089 __ push_ptr(rax); // push b | |
1090 __ push_ptr(rcx); // push c | |
0 | 1091 // stack: ..., a, b, c, b, c |
1506 | 1092 __ store_ptr(3, rcx); // store c in b |
0 | 1093 // stack: ..., a, c, c, b, c |
1506 | 1094 __ load_ptr( 4, rcx); // load a |
1095 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1096 // stack: ..., a, c, a, b, c |
1506 | 1097 __ store_ptr(4, rax); // store b in a |
0 | 1098 // stack: ..., b, c, a, b, c |
1099 } | |
1100 | |
1101 void TemplateTable::dup2_x2() { | |
1102 transition(vtos, vtos); | |
1103 // stack: ..., a, b, c, d | |
1506 | 1104 __ load_ptr( 0, rcx); // load d |
1105 __ load_ptr( 1, rax); // load c | |
1106 __ push_ptr(rax); // push c | |
1107 __ push_ptr(rcx); // push d | |
0 | 1108 // stack: ..., a, b, c, d, c, d |
1506 | 1109 __ load_ptr( 4, rax); // load b |
1110 __ store_ptr(2, rax); // store b in d | |
1111 __ store_ptr(4, rcx); // store d in b | |
0 | 1112 // stack: ..., a, d, c, b, c, d |
1506 | 1113 __ load_ptr( 5, rcx); // load a |
1114 __ load_ptr( 3, rax); // load c | |
1115 __ store_ptr(3, rcx); // store a in c | |
1116 __ store_ptr(5, rax); // store c in a | |
0 | 1117 // stack: ..., c, d, a, b, c, d |
1118 } | |
1119 | |
1120 void TemplateTable::swap() { | |
1121 transition(vtos, vtos); | |
1122 // stack: ..., a, b | |
1506 | 1123 __ load_ptr( 1, rcx); // load a |
1124 __ load_ptr( 0, rax); // load b | |
1125 __ store_ptr(0, rcx); // store a in b | |
1126 __ store_ptr(1, rax); // store b in a | |
0 | 1127 // stack: ..., b, a |
1128 } | |
1129 | |
1130 void TemplateTable::iop2(Operation op) { | |
1131 transition(itos, itos); | |
1132 switch (op) { | |
1133 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1134 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1135 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1136 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1137 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1138 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1139 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1140 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1141 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1142 default : ShouldNotReachHere(); | |
1143 } | |
1144 } | |
1145 | |
1146 void TemplateTable::lop2(Operation op) { | |
1147 transition(ltos, ltos); | |
1148 switch (op) { | |
1506 | 1149 case add : __ pop_l(rdx); __ addptr(rax, rdx); break; |
1150 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break; | |
1151 case _and : __ pop_l(rdx); __ andptr(rax, rdx); break; | |
1152 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1153 case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break; | |
1154 default : ShouldNotReachHere(); | |
0 | 1155 } |
1156 } | |
1157 | |
1158 void TemplateTable::idiv() { | |
1159 transition(itos, itos); | |
1160 __ movl(rcx, rax); | |
1161 __ pop_i(rax); | |
1162 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1163 // they are not equal, one could do a normal division (no correction | |
1164 // needed), which may speed up this implementation for the common case. | |
1165 // (see also JVM spec., p.243 & p.271) | |
1166 __ corrected_idivl(rcx); | |
1167 } | |
1168 | |
1169 void TemplateTable::irem() { | |
1170 transition(itos, itos); | |
1171 __ movl(rcx, rax); | |
1172 __ pop_i(rax); | |
1173 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1174 // they are not equal, one could do a normal division (no correction | |
1175 // needed), which may speed up this implementation for the common case. | |
1176 // (see also JVM spec., p.243 & p.271) | |
1177 __ corrected_idivl(rcx); | |
1178 __ movl(rax, rdx); | |
1179 } | |
1180 | |
1181 void TemplateTable::lmul() { | |
1182 transition(ltos, ltos); | |
1183 __ pop_l(rdx); | |
1184 __ imulq(rax, rdx); | |
1185 } | |
1186 | |
1187 void TemplateTable::ldiv() { | |
1188 transition(ltos, ltos); | |
304 | 1189 __ mov(rcx, rax); |
0 | 1190 __ pop_l(rax); |
1191 // generate explicit div0 check | |
1192 __ testq(rcx, rcx); | |
1193 __ jump_cc(Assembler::zero, | |
1194 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1195 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1196 // they are not equal, one could do a normal division (no correction | |
1197 // needed), which may speed up this implementation for the common case. | |
1198 // (see also JVM spec., p.243 & p.271) | |
1199 __ corrected_idivq(rcx); // kills rbx | |
1200 } | |
1201 | |
1202 void TemplateTable::lrem() { | |
1203 transition(ltos, ltos); | |
304 | 1204 __ mov(rcx, rax); |
0 | 1205 __ pop_l(rax); |
1206 __ testq(rcx, rcx); | |
1207 __ jump_cc(Assembler::zero, | |
1208 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1209 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1210 // they are not equal, one could do a normal division (no correction | |
1211 // needed), which may speed up this implementation for the common case. | |
1212 // (see also JVM spec., p.243 & p.271) | |
1213 __ corrected_idivq(rcx); // kills rbx | |
304 | 1214 __ mov(rax, rdx); |
0 | 1215 } |
1216 | |
1217 void TemplateTable::lshl() { | |
1218 transition(itos, ltos); | |
1219 __ movl(rcx, rax); // get shift count | |
1220 __ pop_l(rax); // get shift value | |
1221 __ shlq(rax); | |
1222 } | |
1223 | |
1224 void TemplateTable::lshr() { | |
1225 transition(itos, ltos); | |
1226 __ movl(rcx, rax); // get shift count | |
1227 __ pop_l(rax); // get shift value | |
1228 __ sarq(rax); | |
1229 } | |
1230 | |
1231 void TemplateTable::lushr() { | |
1232 transition(itos, ltos); | |
1233 __ movl(rcx, rax); // get shift count | |
1234 __ pop_l(rax); // get shift value | |
1235 __ shrq(rax); | |
1236 } | |
1237 | |
1238 void TemplateTable::fop2(Operation op) { | |
1239 transition(ftos, ftos); | |
1240 switch (op) { | |
1241 case add: | |
1242 __ addss(xmm0, at_rsp()); | |
1506 | 1243 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1244 break; |
1245 case sub: | |
1246 __ movflt(xmm1, xmm0); | |
1247 __ pop_f(xmm0); | |
1248 __ subss(xmm0, xmm1); | |
1249 break; | |
1250 case mul: | |
1251 __ mulss(xmm0, at_rsp()); | |
1506 | 1252 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1253 break; |
1254 case div: | |
1255 __ movflt(xmm1, xmm0); | |
1256 __ pop_f(xmm0); | |
1257 __ divss(xmm0, xmm1); | |
1258 break; | |
1259 case rem: | |
1260 __ movflt(xmm1, xmm0); | |
1261 __ pop_f(xmm0); | |
1262 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1263 break; | |
1264 default: | |
1265 ShouldNotReachHere(); | |
1266 break; | |
1267 } | |
1268 } | |
1269 | |
1270 void TemplateTable::dop2(Operation op) { | |
1271 transition(dtos, dtos); | |
1272 switch (op) { | |
1273 case add: | |
1274 __ addsd(xmm0, at_rsp()); | |
1506 | 1275 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1276 break; |
1277 case sub: | |
1278 __ movdbl(xmm1, xmm0); | |
1279 __ pop_d(xmm0); | |
1280 __ subsd(xmm0, xmm1); | |
1281 break; | |
1282 case mul: | |
1283 __ mulsd(xmm0, at_rsp()); | |
1506 | 1284 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1285 break; |
1286 case div: | |
1287 __ movdbl(xmm1, xmm0); | |
1288 __ pop_d(xmm0); | |
1289 __ divsd(xmm0, xmm1); | |
1290 break; | |
1291 case rem: | |
1292 __ movdbl(xmm1, xmm0); | |
1293 __ pop_d(xmm0); | |
1294 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1295 break; | |
1296 default: | |
1297 ShouldNotReachHere(); | |
1298 break; | |
1299 } | |
1300 } | |
1301 | |
1302 void TemplateTable::ineg() { | |
1303 transition(itos, itos); | |
1304 __ negl(rax); | |
1305 } | |
1306 | |
1307 void TemplateTable::lneg() { | |
1308 transition(ltos, ltos); | |
1309 __ negq(rax); | |
1310 } | |
1311 | |
1312 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1313 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1314 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1315 // of 128-bits operands for SSE instructions. | |
1316 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1317 // Store the value to a 128-bits operand. | |
1318 operand[0] = lo; | |
1319 operand[1] = hi; | |
1320 return operand; | |
1321 } | |
1322 | |
1323 // Buffer for 128-bits masks used by SSE instructions. | |
1324 static jlong float_signflip_pool[2*2]; | |
1325 static jlong double_signflip_pool[2*2]; | |
1326 | |
1327 void TemplateTable::fneg() { | |
1328 transition(ftos, ftos); | |
1329 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1330 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1331 } | |
1332 | |
1333 void TemplateTable::dneg() { | |
1334 transition(dtos, dtos); | |
1335 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1336 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1337 } | |
1338 | |
1339 void TemplateTable::iinc() { | |
1340 transition(vtos, vtos); | |
1341 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1342 locals_index(rbx); | |
1343 __ addl(iaddress(rbx), rdx); | |
1344 } | |
1345 | |
1346 void TemplateTable::wide_iinc() { | |
1347 transition(vtos, vtos); | |
1348 __ movl(rdx, at_bcp(4)); // get constant | |
1349 locals_index_wide(rbx); | |
1350 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1351 __ sarl(rdx, 16); | |
1352 __ addl(iaddress(rbx), rdx); | |
1353 // Note: should probably use only one movl to get both | |
1354 // the index and the constant -> fix this | |
1355 } | |
1356 | |
1357 void TemplateTable::convert() { | |
1358 // Checking | |
1359 #ifdef ASSERT | |
1360 { | |
1361 TosState tos_in = ilgl; | |
1362 TosState tos_out = ilgl; | |
1363 switch (bytecode()) { | |
1364 case Bytecodes::_i2l: // fall through | |
1365 case Bytecodes::_i2f: // fall through | |
1366 case Bytecodes::_i2d: // fall through | |
1367 case Bytecodes::_i2b: // fall through | |
1368 case Bytecodes::_i2c: // fall through | |
1369 case Bytecodes::_i2s: tos_in = itos; break; | |
1370 case Bytecodes::_l2i: // fall through | |
1371 case Bytecodes::_l2f: // fall through | |
1372 case Bytecodes::_l2d: tos_in = ltos; break; | |
1373 case Bytecodes::_f2i: // fall through | |
1374 case Bytecodes::_f2l: // fall through | |
1375 case Bytecodes::_f2d: tos_in = ftos; break; | |
1376 case Bytecodes::_d2i: // fall through | |
1377 case Bytecodes::_d2l: // fall through | |
1378 case Bytecodes::_d2f: tos_in = dtos; break; | |
1379 default : ShouldNotReachHere(); | |
1380 } | |
1381 switch (bytecode()) { | |
1382 case Bytecodes::_l2i: // fall through | |
1383 case Bytecodes::_f2i: // fall through | |
1384 case Bytecodes::_d2i: // fall through | |
1385 case Bytecodes::_i2b: // fall through | |
1386 case Bytecodes::_i2c: // fall through | |
1387 case Bytecodes::_i2s: tos_out = itos; break; | |
1388 case Bytecodes::_i2l: // fall through | |
1389 case Bytecodes::_f2l: // fall through | |
1390 case Bytecodes::_d2l: tos_out = ltos; break; | |
1391 case Bytecodes::_i2f: // fall through | |
1392 case Bytecodes::_l2f: // fall through | |
1393 case Bytecodes::_d2f: tos_out = ftos; break; | |
1394 case Bytecodes::_i2d: // fall through | |
1395 case Bytecodes::_l2d: // fall through | |
1396 case Bytecodes::_f2d: tos_out = dtos; break; | |
1397 default : ShouldNotReachHere(); | |
1398 } | |
1399 transition(tos_in, tos_out); | |
1400 } | |
1401 #endif // ASSERT | |
1402 | |
1403 static const int64_t is_nan = 0x8000000000000000L; | |
1404 | |
1405 // Conversion | |
1406 switch (bytecode()) { | |
1407 case Bytecodes::_i2l: | |
1408 __ movslq(rax, rax); | |
1409 break; | |
1410 case Bytecodes::_i2f: | |
1411 __ cvtsi2ssl(xmm0, rax); | |
1412 break; | |
1413 case Bytecodes::_i2d: | |
1414 __ cvtsi2sdl(xmm0, rax); | |
1415 break; | |
1416 case Bytecodes::_i2b: | |
1417 __ movsbl(rax, rax); | |
1418 break; | |
1419 case Bytecodes::_i2c: | |
1420 __ movzwl(rax, rax); | |
1421 break; | |
1422 case Bytecodes::_i2s: | |
1423 __ movswl(rax, rax); | |
1424 break; | |
1425 case Bytecodes::_l2i: | |
1426 __ movl(rax, rax); | |
1427 break; | |
1428 case Bytecodes::_l2f: | |
1429 __ cvtsi2ssq(xmm0, rax); | |
1430 break; | |
1431 case Bytecodes::_l2d: | |
1432 __ cvtsi2sdq(xmm0, rax); | |
1433 break; | |
1434 case Bytecodes::_f2i: | |
1435 { | |
1436 Label L; | |
1437 __ cvttss2sil(rax, xmm0); | |
1438 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1439 __ jcc(Assembler::notEqual, L); | |
1440 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1441 __ bind(L); | |
1442 } | |
1443 break; | |
1444 case Bytecodes::_f2l: | |
1445 { | |
1446 Label L; | |
1447 __ cvttss2siq(rax, xmm0); | |
1448 // NaN or overflow/underflow? | |
1449 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1450 __ jcc(Assembler::notEqual, L); | |
1451 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1452 __ bind(L); | |
1453 } | |
1454 break; | |
1455 case Bytecodes::_f2d: | |
1456 __ cvtss2sd(xmm0, xmm0); | |
1457 break; | |
1458 case Bytecodes::_d2i: | |
1459 { | |
1460 Label L; | |
1461 __ cvttsd2sil(rax, xmm0); | |
1462 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1463 __ jcc(Assembler::notEqual, L); | |
1464 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1465 __ bind(L); | |
1466 } | |
1467 break; | |
1468 case Bytecodes::_d2l: | |
1469 { | |
1470 Label L; | |
1471 __ cvttsd2siq(rax, xmm0); | |
1472 // NaN or overflow/underflow? | |
1473 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1474 __ jcc(Assembler::notEqual, L); | |
1475 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1476 __ bind(L); | |
1477 } | |
1478 break; | |
1479 case Bytecodes::_d2f: | |
1480 __ cvtsd2ss(xmm0, xmm0); | |
1481 break; | |
1482 default: | |
1483 ShouldNotReachHere(); | |
1484 } | |
1485 } | |
1486 | |
1487 void TemplateTable::lcmp() { | |
1488 transition(ltos, itos); | |
1489 Label done; | |
1490 __ pop_l(rdx); | |
1491 __ cmpq(rdx, rax); | |
1492 __ movl(rax, -1); | |
1493 __ jccb(Assembler::less, done); | |
1494 __ setb(Assembler::notEqual, rax); | |
1495 __ movzbl(rax, rax); | |
1496 __ bind(done); | |
1497 } | |
1498 | |
1499 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1500 Label done; | |
1501 if (is_float) { | |
1502 // XXX get rid of pop here, use ... reg, mem32 | |
1503 __ pop_f(xmm1); | |
1504 __ ucomiss(xmm1, xmm0); | |
1505 } else { | |
1506 // XXX get rid of pop here, use ... reg, mem64 | |
1507 __ pop_d(xmm1); | |
1508 __ ucomisd(xmm1, xmm0); | |
1509 } | |
1510 if (unordered_result < 0) { | |
1511 __ movl(rax, -1); | |
1512 __ jccb(Assembler::parity, done); | |
1513 __ jccb(Assembler::below, done); | |
1514 __ setb(Assembler::notEqual, rdx); | |
1515 __ movzbl(rax, rdx); | |
1516 } else { | |
1517 __ movl(rax, 1); | |
1518 __ jccb(Assembler::parity, done); | |
1519 __ jccb(Assembler::above, done); | |
1520 __ movl(rax, 0); | |
1521 __ jccb(Assembler::equal, done); | |
1522 __ decrementl(rax); | |
1523 } | |
1524 __ bind(done); | |
1525 } | |
1526 | |
1527 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1528 __ get_method(rcx); // rcx holds method | |
1529 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1530 // holds bumped taken count | |
1531 | |
1532 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
1533 InvocationCounter::counter_offset(); | |
1534 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
1535 InvocationCounter::counter_offset(); | |
1536 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1537 | |
1538 // Load up edx with the branch displacement | |
1539 __ movl(rdx, at_bcp(1)); | |
1540 __ bswapl(rdx); | |
1541 | |
1542 if (!is_wide) { | |
1543 __ sarl(rdx, 16); | |
1544 } | |
304 | 1545 __ movl2ptr(rdx, rdx); |
0 | 1546 |
1547 // Handle all the JSR stuff here, then exit. | |
1548 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1549 // normal-branch stuff occurring below. |
0 | 1550 if (is_jsr) { |
1551 // Pre-load the next target bytecode into rbx | |
1552 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1553 | |
1554 // compute return address as bci in rax | |
304 | 1555 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
0 | 1556 in_bytes(constMethodOopDesc::codes_offset()))); |
304 | 1557 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); |
0 | 1558 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1559 __ addptr(r13, rdx); |
0 | 1560 // jsr returns atos that is not an oop |
1561 __ push_i(rax); | |
1562 __ dispatch_only(vtos); | |
1563 return; | |
1564 } | |
1565 | |
1566 // Normal (non-jsr) branch handling | |
1567 | |
1568 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1569 __ addptr(r13, rdx); |
0 | 1570 |
1571 assert(UseLoopCounter || !UseOnStackReplacement, | |
1572 "on-stack-replacement requires loop counters"); | |
1573 Label backedge_counter_overflow; | |
1574 Label profile_method; | |
1575 Label dispatch; | |
1576 if (UseLoopCounter) { | |
1577 // increment backedge counter for backward branches | |
1578 // rax: MDO | |
1579 // ebx: MDO bumped taken-count | |
1580 // rcx: method | |
1581 // rdx: target offset | |
1582 // r13: target bcp | |
1583 // r14: locals pointer | |
1584 __ testl(rdx, rdx); // check if forward or backward branch | |
1585 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1783 | 1586 if (TieredCompilation) { |
1587 Label no_mdo; | |
1588 int increment = InvocationCounter::count_increment; | |
1589 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1590 if (ProfileInterpreter) { | |
1591 // Are we profiling? | |
1592 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1593 __ testptr(rbx, rbx); | |
1594 __ jccb(Assembler::zero, no_mdo); | |
1595 // Increment the MDO backedge counter | |
1596 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1597 in_bytes(InvocationCounter::counter_offset())); | |
1598 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1599 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1600 __ jmp(dispatch); | |
0 | 1601 } |
1783 | 1602 __ bind(no_mdo); |
1603 // Increment backedge counter in methodOop | |
1604 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1605 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1606 } else { |
1783 | 1607 // increment counter |
1608 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1609 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1610 __ movl(Address(rcx, be_offset), rax); // store counter | |
1611 | |
1612 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1613 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1614 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1615 | |
1616 if (ProfileInterpreter) { | |
1617 // Test to see if we should create a method data oop | |
0 | 1618 __ cmp32(rax, |
1783 | 1619 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1620 __ jcc(Assembler::less, dispatch); | |
1621 | |
1622 // if no method data exists, go to profile method | |
1623 __ test_method_data_pointer(rax, profile_method); | |
1624 | |
1625 if (UseOnStackReplacement) { | |
1626 // check for overflow against ebx which is the MDO taken count | |
1627 __ cmp32(rbx, | |
1628 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1629 __ jcc(Assembler::below, dispatch); | |
1630 | |
1631 // When ProfileInterpreter is on, the backedge_count comes | |
1632 // from the methodDataOop, which value does not get reset on | |
1633 // the call to frequency_counter_overflow(). To avoid | |
1634 // excessive calls to the overflow routine while the method is | |
1635 // being compiled, add a second test to make sure the overflow | |
1636 // function is called only once every overflow_frequency. | |
1637 const int overflow_frequency = 1024; | |
1638 __ andl(rbx, overflow_frequency - 1); | |
1639 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1640 | |
1641 } | |
1642 } else { | |
1643 if (UseOnStackReplacement) { | |
1644 // check for overflow against eax, which is the sum of the | |
1645 // counters | |
1646 __ cmp32(rax, | |
1647 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1648 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1649 | |
1650 } | |
0 | 1651 } |
1652 } | |
1653 __ bind(dispatch); | |
1654 } | |
1655 | |
1656 // Pre-load the next target bytecode into rbx | |
1657 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1658 | |
1659 // continue with the bytecode @ target | |
1660 // eax: return bci for jsr's, unused otherwise | |
1661 // ebx: target bytecode | |
1662 // r13: target bcp | |
1663 __ dispatch_only(vtos); | |
1664 | |
1665 if (UseLoopCounter) { | |
1666 if (ProfileInterpreter) { | |
1667 // Out-of-line code to allocate method data oop. | |
1668 __ bind(profile_method); | |
1669 __ call_VM(noreg, | |
1670 CAST_FROM_FN_PTR(address, | |
1671 InterpreterRuntime::profile_method), r13); | |
1672 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
304 | 1673 __ movptr(rcx, Address(rbp, method_offset)); |
1674 __ movptr(rcx, Address(rcx, | |
1675 in_bytes(methodOopDesc::method_data_offset()))); | |
1676 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1677 rcx); | |
0 | 1678 __ test_method_data_pointer(rcx, dispatch); |
1679 // offset non-null mdp by MDO::data_offset() + IR::profile_method() | |
304 | 1680 __ addptr(rcx, in_bytes(methodDataOopDesc::data_offset())); |
1681 __ addptr(rcx, rax); | |
1682 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1683 rcx); | |
0 | 1684 __ jmp(dispatch); |
1685 } | |
1686 | |
1687 if (UseOnStackReplacement) { | |
1688 // invocation counter overflow | |
1689 __ bind(backedge_counter_overflow); | |
304 | 1690 __ negptr(rdx); |
1691 __ addptr(rdx, r13); // branch bcp | |
0 | 1692 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1693 __ call_VM(noreg, | |
1694 CAST_FROM_FN_PTR(address, | |
1695 InterpreterRuntime::frequency_counter_overflow), | |
1696 rdx); | |
1697 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1698 | |
1699 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1700 // ebx: target bytecode | |
1701 // rdx: scratch | |
1702 // r14: locals pointer | |
1703 // r13: bcp | |
304 | 1704 __ testptr(rax, rax); // test result |
0 | 1705 __ jcc(Assembler::zero, dispatch); // no osr if null |
1706 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1707 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1708 __ cmpl(rcx, InvalidOSREntryBci); | |
1709 __ jcc(Assembler::equal, dispatch); | |
1710 | |
1711 // We have the address of an on stack replacement routine in eax | |
1712 // We need to prepare to execute the OSR method. First we must | |
1713 // migrate the locals and monitors off of the stack. | |
1714 | |
304 | 1715 __ mov(r13, rax); // save the nmethod |
0 | 1716 |
1717 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1718 | |
1719 // eax is OSR buffer, move it to expected parameter location | |
304 | 1720 __ mov(j_rarg0, rax); |
0 | 1721 |
1722 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1723 // registers change across platforms as we are in the midst of a calling | |
1724 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1725 | |
1726 const Register retaddr = j_rarg2; | |
1727 const Register sender_sp = j_rarg1; | |
1728 | |
1729 // pop the interpreter frame | |
304 | 1730 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1731 __ leave(); // remove frame anchor |
304 | 1732 __ pop(retaddr); // get return address |
1733 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1734 // Ensure compiled code always sees stack at proper alignment |
304 | 1735 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1736 |
1737 // unlike x86 we need no specialized return from compiled code | |
1738 // to the interpreter or the call stub. | |
1739 | |
1740 // push the return address | |
304 | 1741 __ push(retaddr); |
0 | 1742 |
1743 // and begin the OSR nmethod | |
1744 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1745 } | |
1746 } | |
1747 } | |
1748 | |
1749 | |
1750 void TemplateTable::if_0cmp(Condition cc) { | |
1751 transition(itos, vtos); | |
1752 // assume branch is more often taken than not (loops use backward branches) | |
1753 Label not_taken; | |
1754 __ testl(rax, rax); | |
1755 __ jcc(j_not(cc), not_taken); | |
1756 branch(false, false); | |
1757 __ bind(not_taken); | |
1758 __ profile_not_taken_branch(rax); | |
1759 } | |
1760 | |
1761 void TemplateTable::if_icmp(Condition cc) { | |
1762 transition(itos, vtos); | |
1763 // assume branch is more often taken than not (loops use backward branches) | |
1764 Label not_taken; | |
1765 __ pop_i(rdx); | |
1766 __ cmpl(rdx, rax); | |
1767 __ jcc(j_not(cc), not_taken); | |
1768 branch(false, false); | |
1769 __ bind(not_taken); | |
1770 __ profile_not_taken_branch(rax); | |
1771 } | |
1772 | |
1773 void TemplateTable::if_nullcmp(Condition cc) { | |
1774 transition(atos, vtos); | |
1775 // assume branch is more often taken than not (loops use backward branches) | |
1776 Label not_taken; | |
304 | 1777 __ testptr(rax, rax); |
0 | 1778 __ jcc(j_not(cc), not_taken); |
1779 branch(false, false); | |
1780 __ bind(not_taken); | |
1781 __ profile_not_taken_branch(rax); | |
1782 } | |
1783 | |
1784 void TemplateTable::if_acmp(Condition cc) { | |
1785 transition(atos, vtos); | |
1786 // assume branch is more often taken than not (loops use backward branches) | |
1787 Label not_taken; | |
1788 __ pop_ptr(rdx); | |
304 | 1789 __ cmpptr(rdx, rax); |
0 | 1790 __ jcc(j_not(cc), not_taken); |
1791 branch(false, false); | |
1792 __ bind(not_taken); | |
1793 __ profile_not_taken_branch(rax); | |
1794 } | |
1795 | |
1796 void TemplateTable::ret() { | |
1797 transition(vtos, vtos); | |
1798 locals_index(rbx); | |
304 | 1799 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1800 __ profile_ret(rbx, rcx); |
1801 __ get_method(rax); | |
304 | 1802 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1803 __ lea(r13, Address(r13, rbx, Address::times_1, | |
1804 constMethodOopDesc::codes_offset())); | |
0 | 1805 __ dispatch_next(vtos); |
1806 } | |
1807 | |
1808 void TemplateTable::wide_ret() { | |
1809 transition(vtos, vtos); | |
1810 locals_index_wide(rbx); | |
304 | 1811 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1812 __ profile_ret(rbx, rcx); |
1813 __ get_method(rax); | |
304 | 1814 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1815 __ lea(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1816 __ dispatch_next(vtos); |
1817 } | |
1818 | |
1819 void TemplateTable::tableswitch() { | |
1820 Label default_case, continue_execution; | |
1821 transition(itos, vtos); | |
1822 // align r13 | |
304 | 1823 __ lea(rbx, at_bcp(BytesPerInt)); |
1824 __ andptr(rbx, -BytesPerInt); | |
0 | 1825 // load lo & hi |
1826 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1827 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1828 __ bswapl(rcx); | |
1829 __ bswapl(rdx); | |
1830 // check against lo & hi | |
1831 __ cmpl(rax, rcx); | |
1832 __ jcc(Assembler::less, default_case); | |
1833 __ cmpl(rax, rdx); | |
1834 __ jcc(Assembler::greater, default_case); | |
1835 // lookup dispatch offset | |
1836 __ subl(rax, rcx); | |
1837 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1838 __ profile_switch_case(rax, rbx, rcx); | |
1839 // continue execution | |
1840 __ bind(continue_execution); | |
1841 __ bswapl(rdx); | |
304 | 1842 __ movl2ptr(rdx, rdx); |
0 | 1843 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1844 __ addptr(r13, rdx); |
0 | 1845 __ dispatch_only(vtos); |
1846 // handle default | |
1847 __ bind(default_case); | |
1848 __ profile_switch_default(rax); | |
1849 __ movl(rdx, Address(rbx, 0)); | |
1850 __ jmp(continue_execution); | |
1851 } | |
1852 | |
1853 void TemplateTable::lookupswitch() { | |
1854 transition(itos, itos); | |
1855 __ stop("lookupswitch bytecode should have been rewritten"); | |
1856 } | |
1857 | |
1858 void TemplateTable::fast_linearswitch() { | |
1859 transition(itos, vtos); | |
1860 Label loop_entry, loop, found, continue_execution; | |
1861 // bswap rax so we can avoid bswapping the table entries | |
1862 __ bswapl(rax); | |
1863 // align r13 | |
304 | 1864 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1865 // this instruction (change offsets | |
1866 // below) | |
1867 __ andptr(rbx, -BytesPerInt); | |
0 | 1868 // set counter |
1869 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1870 __ bswapl(rcx); | |
1871 __ jmpb(loop_entry); | |
1872 // table search | |
1873 __ bind(loop); | |
1874 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1875 __ jcc(Assembler::equal, found); | |
1876 __ bind(loop_entry); | |
1877 __ decrementl(rcx); | |
1878 __ jcc(Assembler::greaterEqual, loop); | |
1879 // default case | |
1880 __ profile_switch_default(rax); | |
1881 __ movl(rdx, Address(rbx, 0)); | |
1882 __ jmp(continue_execution); | |
1883 // entry found -> get offset | |
1884 __ bind(found); | |
1885 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1886 __ profile_switch_case(rcx, rax, rbx); | |
1887 // continue execution | |
1888 __ bind(continue_execution); | |
1889 __ bswapl(rdx); | |
304 | 1890 __ movl2ptr(rdx, rdx); |
0 | 1891 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1892 __ addptr(r13, rdx); |
0 | 1893 __ dispatch_only(vtos); |
1894 } | |
1895 | |
1896 void TemplateTable::fast_binaryswitch() { | |
1897 transition(itos, vtos); | |
1898 // Implementation using the following core algorithm: | |
1899 // | |
1900 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1901 // // Binary search according to "Methodik des Programmierens" by | |
1902 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1903 // int i = 0; | |
1904 // int j = n; | |
1905 // while (i+1 < j) { | |
1906 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1907 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1908 // // where a stands for the array and assuming that the (inexisting) | |
1909 // // element a[n] is infinitely big. | |
1910 // int h = (i + j) >> 1; | |
1911 // // i < h < j | |
1912 // if (key < array[h].fast_match()) { | |
1913 // j = h; | |
1914 // } else { | |
1915 // i = h; | |
1916 // } | |
1917 // } | |
1918 // // R: a[i] <= key < a[i+1] or Q | |
1919 // // (i.e., if key is within array, i is the correct index) | |
1920 // return i; | |
1921 // } | |
1922 | |
1923 // Register allocation | |
1924 const Register key = rax; // already set (tosca) | |
1925 const Register array = rbx; | |
1926 const Register i = rcx; | |
1927 const Register j = rdx; | |
1928 const Register h = rdi; | |
1929 const Register temp = rsi; | |
1930 | |
1931 // Find array start | |
304 | 1932 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1933 // get rid of this | |
1934 // instruction (change | |
1935 // offsets below) | |
1936 __ andptr(array, -BytesPerInt); | |
0 | 1937 |
1938 // Initialize i & j | |
1939 __ xorl(i, i); // i = 0; | |
1940 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1941 | |
1942 // Convert j into native byteordering | |
1943 __ bswapl(j); | |
1944 | |
1945 // And start | |
1946 Label entry; | |
1947 __ jmp(entry); | |
1948 | |
1949 // binary search loop | |
1950 { | |
1951 Label loop; | |
1952 __ bind(loop); | |
1953 // int h = (i + j) >> 1; | |
1954 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1955 __ sarl(h, 1); // h = (i + j) >> 1; | |
1956 // if (key < array[h].fast_match()) { | |
1957 // j = h; | |
1958 // } else { | |
1959 // i = h; | |
1960 // } | |
1961 // Convert array[h].match to native byte-ordering before compare | |
1962 __ movl(temp, Address(array, h, Address::times_8)); | |
1963 __ bswapl(temp); | |
1964 __ cmpl(key, temp); | |
1965 // j = h if (key < array[h].fast_match()) | |
1966 __ cmovl(Assembler::less, j, h); | |
1967 // i = h if (key >= array[h].fast_match()) | |
1968 __ cmovl(Assembler::greaterEqual, i, h); | |
1969 // while (i+1 < j) | |
1970 __ bind(entry); | |
1971 __ leal(h, Address(i, 1)); // i+1 | |
1972 __ cmpl(h, j); // i+1 < j | |
1973 __ jcc(Assembler::less, loop); | |
1974 } | |
1975 | |
1976 // end of binary search, result index is i (must check again!) | |
1977 Label default_case; | |
1978 // Convert array[i].match to native byte-ordering before compare | |
1979 __ movl(temp, Address(array, i, Address::times_8)); | |
1980 __ bswapl(temp); | |
1981 __ cmpl(key, temp); | |
1982 __ jcc(Assembler::notEqual, default_case); | |
1983 | |
1984 // entry found -> j = offset | |
1985 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
1986 __ profile_switch_case(i, key, array); | |
1987 __ bswapl(j); | |
304 | 1988 __ movl2ptr(j, j); |
0 | 1989 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 1990 __ addptr(r13, j); |
0 | 1991 __ dispatch_only(vtos); |
1992 | |
1993 // default case -> j = default offset | |
1994 __ bind(default_case); | |
1995 __ profile_switch_default(i); | |
1996 __ movl(j, Address(array, -2 * BytesPerInt)); | |
1997 __ bswapl(j); | |
304 | 1998 __ movl2ptr(j, j); |
0 | 1999 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2000 __ addptr(r13, j); |
0 | 2001 __ dispatch_only(vtos); |
2002 } | |
2003 | |
2004 | |
2005 void TemplateTable::_return(TosState state) { | |
2006 transition(state, state); | |
2007 assert(_desc->calls_vm(), | |
2008 "inconsistent calls_vm information"); // call in remove_activation | |
2009 | |
2010 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2011 assert(state == vtos, "only valid state"); | |
304 | 2012 __ movptr(c_rarg1, aaddress(0)); |
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2013 __ load_klass(rdi, c_rarg1); |
0 | 2014 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
2015 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
2016 Label skip_register_finalizer; | |
2017 __ jcc(Assembler::zero, skip_register_finalizer); | |
2018 | |
2019 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2020 | |
2021 __ bind(skip_register_finalizer); | |
2022 } | |
2023 | |
2024 __ remove_activation(state, r13); | |
2025 __ jmp(r13); | |
2026 } | |
2027 | |
2028 // ---------------------------------------------------------------------------- | |
2029 // Volatile variables demand their effects be made known to all CPU's | |
2030 // in order. Store buffers on most chips allow reads & writes to | |
2031 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2032 // without some kind of memory barrier (i.e., it's not sufficient that | |
2033 // the interpreter does not reorder volatile references, the hardware | |
2034 // also must not reorder them). | |
2035 // | |
2036 // According to the new Java Memory Model (JMM): | |
2037 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2038 // writes act as aquire & release, so: | |
2039 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2040 // happen after the read float up to before the read. It's OK for | |
2041 // non-volatile memory refs that happen before the volatile read to | |
2042 // float down below it. | |
2043 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2044 // memory refs that happen BEFORE the write float down to after the | |
2045 // write. It's OK for non-volatile memory refs that happen after the | |
2046 // volatile write to float up before it. | |
2047 // | |
2048 // We only put in barriers around volatile refs (they are expensive), | |
2049 // not _between_ memory refs (that would require us to track the | |
2050 // flavor of the previous memory refs). Requirements (2) and (3) | |
2051 // require some barriers before volatile stores and after volatile | |
2052 // loads. These nearly cover requirement (1) but miss the | |
2053 // volatile-store-volatile-load case. This final case is placed after | |
2054 // volatile-stores although it could just as well go before | |
2055 // volatile-loads. | |
2056 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2057 order_constraint) { | |
2058 // Helper function to insert a is-volatile test and memory barrier | |
2059 if (os::is_MP()) { // Not needed on single CPU | |
2060 __ membar(order_constraint); | |
2061 } | |
2062 } | |
2063 | |
1565 | 2064 void TemplateTable::resolve_cache_and_index(int byte_no, |
2065 Register result, | |
2066 Register Rcache, | |
2067 Register index, | |
2068 size_t index_size) { | |
0 | 2069 const Register temp = rbx; |
1565 | 2070 assert_different_registers(result, Rcache, index, temp); |
2071 | |
0 | 2072 Label resolved; |
1565 | 2073 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2074 if (byte_no == f1_oop) { | |
2075 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2076 // This kind of CP cache entry does not need to match the flags byte, because | |
2077 // there is a 1-1 relation between bytecode type and CP entry type. | |
2078 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
2079 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
2080 __ testptr(result, result); | |
1108 | 2081 __ jcc(Assembler::notEqual, resolved); |
2082 } else { | |
1565 | 2083 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2084 assert(result == noreg, ""); //else change code for setting result | |
2085 const int shift_count = (1 + byte_no) * BitsPerByte; | |
1108 | 2086 __ movl(temp, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
2087 __ shrl(temp, shift_count); | |
2088 // have we resolved this bytecode? | |
2089 __ andl(temp, 0xFF); | |
2090 __ cmpl(temp, (int) bytecode()); | |
2091 __ jcc(Assembler::equal, resolved); | |
2092 } | |
0 | 2093 |
2094 // resolve first time through | |
2095 address entry; | |
2096 switch (bytecode()) { | |
2097 case Bytecodes::_getstatic: | |
2098 case Bytecodes::_putstatic: | |
2099 case Bytecodes::_getfield: | |
2100 case Bytecodes::_putfield: | |
2101 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2102 break; | |
2103 case Bytecodes::_invokevirtual: | |
2104 case Bytecodes::_invokespecial: | |
2105 case Bytecodes::_invokestatic: | |
2106 case Bytecodes::_invokeinterface: | |
2107 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2108 break; | |
1108 | 2109 case Bytecodes::_invokedynamic: |
2110 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); | |
2111 break; | |
1602 | 2112 case Bytecodes::_fast_aldc: |
2113 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2114 break; | |
2115 case Bytecodes::_fast_aldc_w: | |
2116 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2117 break; | |
0 | 2118 default: |
2119 ShouldNotReachHere(); | |
2120 break; | |
2121 } | |
2122 __ movl(temp, (int) bytecode()); | |
2123 __ call_VM(noreg, entry, temp); | |
2124 | |
2125 // Update registers with resolved info | |
1565 | 2126 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2127 if (result != noreg) | |
2128 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2129 __ bind(resolved); |
2130 } | |
2131 | |
2132 // The Rcache and index registers must be set before call | |
2133 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2134 Register cache, | |
2135 Register index, | |
2136 Register off, | |
2137 Register flags, | |
2138 bool is_static = false) { | |
2139 assert_different_registers(cache, index, flags, off); | |
2140 | |
2141 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2142 // Field offset | |
304 | 2143 __ movptr(off, Address(cache, index, Address::times_8, |
2144 in_bytes(cp_base_offset + | |
2145 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2146 // Flags |
2147 __ movl(flags, Address(cache, index, Address::times_8, | |
2148 in_bytes(cp_base_offset + | |
2149 ConstantPoolCacheEntry::flags_offset()))); | |
2150 | |
2151 // klass overwrite register | |
2152 if (is_static) { | |
304 | 2153 __ movptr(obj, Address(cache, index, Address::times_8, |
2154 in_bytes(cp_base_offset + | |
2155 ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2156 } |
2157 } | |
2158 | |
2159 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2160 Register method, | |
2161 Register itable_index, | |
2162 Register flags, | |
2163 bool is_invokevirtual, | |
1565 | 2164 bool is_invokevfinal, /*unused*/ |
2165 bool is_invokedynamic) { | |
0 | 2166 // setup registers |
2167 const Register cache = rcx; | |
2168 const Register index = rdx; | |
2169 assert_different_registers(method, flags); | |
2170 assert_different_registers(method, cache, index); | |
2171 assert_different_registers(itable_index, flags); | |
2172 assert_different_registers(itable_index, cache, index); | |
2173 // determine constant pool cache field offsets | |
2174 const int method_offset = in_bytes( | |
2175 constantPoolCacheOopDesc::base_offset() + | |
2176 (is_invokevirtual | |
2177 ? ConstantPoolCacheEntry::f2_offset() | |
2178 : ConstantPoolCacheEntry::f1_offset())); | |
2179 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2180 ConstantPoolCacheEntry::flags_offset()); | |
2181 // access constant pool cache fields | |
2182 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2183 ConstantPoolCacheEntry::f2_offset()); | |
2184 | |
1565 | 2185 if (byte_no == f1_oop) { |
2186 // Resolved f1_oop goes directly into 'method' register. | |
2187 assert(is_invokedynamic, ""); | |
2188 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2189 } else { | |
2190 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2191 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2192 } | |
0 | 2193 if (itable_index != noreg) { |
1565 | 2194 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2195 } |
1565 | 2196 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2197 } |
2198 | |
2199 | |
2200 // The registers cache and index expected to be set before call. | |
2201 // Correct values of the cache and index registers are preserved. | |
2202 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2203 bool is_static, bool has_tos) { | |
2204 // do the JVMTI work here to avoid disturbing the register state below | |
2205 // We use c_rarg registers here because we want to use the register used in | |
2206 // the call to the VM | |
2207 if (JvmtiExport::can_post_field_access()) { | |
2208 // Check to see if a field access watch has been set before we | |
2209 // take the time to call into the VM. | |
2210 Label L1; | |
2211 assert_different_registers(cache, index, rax); | |
2212 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2213 __ testl(rax, rax); | |
2214 __ jcc(Assembler::zero, L1); | |
2215 | |
2216 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2217 | |
2218 // cache entry pointer | |
304 | 2219 __ addptr(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2220 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2221 __ addptr(c_rarg2, c_rarg3); |
0 | 2222 if (is_static) { |
2223 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2224 } else { | |
304 | 2225 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2226 __ verify_oop(c_rarg1); |
2227 } | |
2228 // c_rarg1: object pointer or NULL | |
2229 // c_rarg2: cache entry pointer | |
2230 // c_rarg3: jvalue object on the stack | |
2231 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2232 InterpreterRuntime::post_field_access), | |
2233 c_rarg1, c_rarg2, c_rarg3); | |
2234 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2235 __ bind(L1); | |
2236 } | |
2237 } | |
2238 | |
2239 void TemplateTable::pop_and_check_object(Register r) { | |
2240 __ pop_ptr(r); | |
2241 __ null_check(r); // for field access must check obj. | |
2242 __ verify_oop(r); | |
2243 } | |
2244 | |
2245 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2246 transition(vtos, vtos); | |
2247 | |
2248 const Register cache = rcx; | |
2249 const Register index = rdx; | |
2250 const Register obj = c_rarg3; | |
2251 const Register off = rbx; | |
2252 const Register flags = rax; | |
2253 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2254 | |
1565 | 2255 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2256 jvmti_post_field_access(cache, index, is_static, false); |
2257 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2258 | |
2259 if (!is_static) { | |
2260 // obj is on the stack | |
2261 pop_and_check_object(obj); | |
2262 } | |
2263 | |
2264 const Address field(obj, off, Address::times_1); | |
2265 | |
2266 Label Done, notByte, notInt, notShort, notChar, | |
2267 notLong, notFloat, notObj, notDouble; | |
2268 | |
2269 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2270 assert(btos == 0, "change code, btos != 0"); | |
2271 | |
2272 __ andl(flags, 0x0F); | |
2273 __ jcc(Assembler::notZero, notByte); | |
2274 // btos | |
2275 __ load_signed_byte(rax, field); | |
2276 __ push(btos); | |
2277 // Rewrite bytecode to be faster | |
2278 if (!is_static) { | |
2279 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2280 } | |
2281 __ jmp(Done); | |
2282 | |
2283 __ bind(notByte); | |
2284 __ cmpl(flags, atos); | |
2285 __ jcc(Assembler::notEqual, notObj); | |
2286 // atos | |
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2287 __ load_heap_oop(rax, field); |
0 | 2288 __ push(atos); |
2289 if (!is_static) { | |
2290 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2291 } | |
2292 __ jmp(Done); | |
2293 | |
2294 __ bind(notObj); | |
2295 __ cmpl(flags, itos); | |
2296 __ jcc(Assembler::notEqual, notInt); | |
2297 // itos | |
2298 __ movl(rax, field); | |
2299 __ push(itos); | |
2300 // Rewrite bytecode to be faster | |
2301 if (!is_static) { | |
2302 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2303 } | |
2304 __ jmp(Done); | |
2305 | |
2306 __ bind(notInt); | |
2307 __ cmpl(flags, ctos); | |
2308 __ jcc(Assembler::notEqual, notChar); | |
2309 // ctos | |
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2310 __ load_unsigned_short(rax, field); |
0 | 2311 __ push(ctos); |
2312 // Rewrite bytecode to be faster | |
2313 if (!is_static) { | |
2314 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2315 } | |
2316 __ jmp(Done); | |
2317 | |
2318 __ bind(notChar); | |
2319 __ cmpl(flags, stos); | |
2320 __ jcc(Assembler::notEqual, notShort); | |
2321 // stos | |
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2322 __ load_signed_short(rax, field); |
0 | 2323 __ push(stos); |
2324 // Rewrite bytecode to be faster | |
2325 if (!is_static) { | |
2326 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2327 } | |
2328 __ jmp(Done); | |
2329 | |
2330 __ bind(notShort); | |
2331 __ cmpl(flags, ltos); | |
2332 __ jcc(Assembler::notEqual, notLong); | |
2333 // ltos | |
2334 __ movq(rax, field); | |
2335 __ push(ltos); | |
2336 // Rewrite bytecode to be faster | |
2337 if (!is_static) { | |
2338 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2339 } | |
2340 __ jmp(Done); | |
2341 | |
2342 __ bind(notLong); | |
2343 __ cmpl(flags, ftos); | |
2344 __ jcc(Assembler::notEqual, notFloat); | |
2345 // ftos | |
2346 __ movflt(xmm0, field); | |
2347 __ push(ftos); | |
2348 // Rewrite bytecode to be faster | |
2349 if (!is_static) { | |
2350 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2351 } | |
2352 __ jmp(Done); | |
2353 | |
2354 __ bind(notFloat); | |
2355 #ifdef ASSERT | |
2356 __ cmpl(flags, dtos); | |
2357 __ jcc(Assembler::notEqual, notDouble); | |
2358 #endif | |
2359 // dtos | |
2360 __ movdbl(xmm0, field); | |
2361 __ push(dtos); | |
2362 // Rewrite bytecode to be faster | |
2363 if (!is_static) { | |
2364 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2365 } | |
2366 #ifdef ASSERT | |
2367 __ jmp(Done); | |
2368 | |
2369 __ bind(notDouble); | |
2370 __ stop("Bad state"); | |
2371 #endif | |
2372 | |
2373 __ bind(Done); | |
2374 // [jk] not needed currently | |
2375 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2376 // Assembler::LoadStore)); | |
2377 } | |
2378 | |
2379 | |
2380 void TemplateTable::getfield(int byte_no) { | |
2381 getfield_or_static(byte_no, false); | |
2382 } | |
2383 | |
2384 void TemplateTable::getstatic(int byte_no) { | |
2385 getfield_or_static(byte_no, true); | |
2386 } | |
2387 | |
2388 // The registers cache and index expected to be set before call. | |
2389 // The function may destroy various registers, just not the cache and index registers. | |
2390 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2391 transition(vtos, vtos); | |
2392 | |
2393 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2394 | |
2395 if (JvmtiExport::can_post_field_modification()) { | |
2396 // Check to see if a field modification watch has been set before | |
2397 // we take the time to call into the VM. | |
2398 Label L1; | |
2399 assert_different_registers(cache, index, rax); | |
2400 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2401 __ testl(rax, rax); | |
2402 __ jcc(Assembler::zero, L1); | |
2403 | |
2404 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2405 | |
2406 if (is_static) { | |
2407 // Life is simple. Null out the object pointer. | |
2408 __ xorl(c_rarg1, c_rarg1); | |
2409 } else { | |
2410 // Life is harder. The stack holds the value on top, followed by | |
2411 // the object. We don't know the size of the value, though; it | |
2412 // could be one or two words depending on its type. As a result, | |
2413 // we must find the type to determine where the object is. | |
2414 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2415 Address::times_8, | |
2416 in_bytes(cp_base_offset + | |
2417 ConstantPoolCacheEntry::flags_offset()))); | |
2418 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
2419 // Make sure we don't need to mask rcx for tosBits after the | |
2420 // above shift | |
2421 ConstantPoolCacheEntry::verify_tosBits(); | |
304 | 2422 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2423 __ cmpl(c_rarg3, ltos); |
304 | 2424 __ cmovptr(Assembler::equal, |
2425 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2426 __ cmpl(c_rarg3, dtos); |
304 | 2427 __ cmovptr(Assembler::equal, |
2428 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2429 } |
2430 // cache entry pointer | |
304 | 2431 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2432 __ shll(rscratch1, LogBytesPerWord); |
304 | 2433 __ addptr(c_rarg2, rscratch1); |
0 | 2434 // object (tos) |
304 | 2435 __ mov(c_rarg3, rsp); |
0 | 2436 // c_rarg1: object pointer set up above (NULL if static) |
2437 // c_rarg2: cache entry pointer | |
2438 // c_rarg3: jvalue object on the stack | |
2439 __ call_VM(noreg, | |
2440 CAST_FROM_FN_PTR(address, | |
2441 InterpreterRuntime::post_field_modification), | |
2442 c_rarg1, c_rarg2, c_rarg3); | |
2443 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2444 __ bind(L1); | |
2445 } | |
2446 } | |
2447 | |
2448 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2449 transition(vtos, vtos); | |
2450 | |
2451 const Register cache = rcx; | |
2452 const Register index = rdx; | |
2453 const Register obj = rcx; | |
2454 const Register off = rbx; | |
2455 const Register flags = rax; | |
2456 const Register bc = c_rarg3; | |
2457 | |
1565 | 2458 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2459 jvmti_post_field_mod(cache, index, is_static); |
2460 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2461 | |
2462 // [jk] not needed currently | |
2463 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2464 // Assembler::StoreStore)); | |
2465 | |
2466 Label notVolatile, Done; | |
2467 __ movl(rdx, flags); | |
2468 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2469 __ andl(rdx, 0x1); | |
2470 | |
2471 // field address | |
2472 const Address field(obj, off, Address::times_1); | |
2473 | |
2474 Label notByte, notInt, notShort, notChar, | |
2475 notLong, notFloat, notObj, notDouble; | |
2476 | |
2477 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2478 | |
2479 assert(btos == 0, "change code, btos != 0"); | |
2480 __ andl(flags, 0x0f); | |
2481 __ jcc(Assembler::notZero, notByte); | |
2482 // btos | |
2483 __ pop(btos); | |
2484 if (!is_static) pop_and_check_object(obj); | |
2485 __ movb(field, rax); | |
2486 if (!is_static) { | |
2487 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx); | |
2488 } | |
2489 __ jmp(Done); | |
2490 | |
2491 __ bind(notByte); | |
2492 __ cmpl(flags, atos); | |
2493 __ jcc(Assembler::notEqual, notObj); | |
2494 // atos | |
2495 __ pop(atos); | |
2496 if (!is_static) pop_and_check_object(obj); | |
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2497 |
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2498 // Store into the field |
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2499 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2500 |
0 | 2501 if (!is_static) { |
2502 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx); | |
2503 } | |
2504 __ jmp(Done); | |
2505 | |
2506 __ bind(notObj); | |
2507 __ cmpl(flags, itos); | |
2508 __ jcc(Assembler::notEqual, notInt); | |
2509 // itos | |
2510 __ pop(itos); | |
2511 if (!is_static) pop_and_check_object(obj); | |
2512 __ movl(field, rax); | |
2513 if (!is_static) { | |
2514 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx); | |
2515 } | |
2516 __ jmp(Done); | |
2517 | |
2518 __ bind(notInt); | |
2519 __ cmpl(flags, ctos); | |
2520 __ jcc(Assembler::notEqual, notChar); | |
2521 // ctos | |
2522 __ pop(ctos); | |
2523 if (!is_static) pop_and_check_object(obj); | |
2524 __ movw(field, rax); | |
2525 if (!is_static) { | |
2526 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx); | |
2527 } | |
2528 __ jmp(Done); | |
2529 | |
2530 __ bind(notChar); | |
2531 __ cmpl(flags, stos); | |
2532 __ jcc(Assembler::notEqual, notShort); | |
2533 // stos | |
2534 __ pop(stos); | |
2535 if (!is_static) pop_and_check_object(obj); | |
2536 __ movw(field, rax); | |
2537 if (!is_static) { | |
2538 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx); | |
2539 } | |
2540 __ jmp(Done); | |
2541 | |
2542 __ bind(notShort); | |
2543 __ cmpl(flags, ltos); | |
2544 __ jcc(Assembler::notEqual, notLong); | |
2545 // ltos | |
2546 __ pop(ltos); | |
2547 if (!is_static) pop_and_check_object(obj); | |
2548 __ movq(field, rax); | |
2549 if (!is_static) { | |
2550 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx); | |
2551 } | |
2552 __ jmp(Done); | |
2553 | |
2554 __ bind(notLong); | |
2555 __ cmpl(flags, ftos); | |
2556 __ jcc(Assembler::notEqual, notFloat); | |
2557 // ftos | |
2558 __ pop(ftos); | |
2559 if (!is_static) pop_and_check_object(obj); | |
2560 __ movflt(field, xmm0); | |
2561 if (!is_static) { | |
2562 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx); | |
2563 } | |
2564 __ jmp(Done); | |
2565 | |
2566 __ bind(notFloat); | |
2567 #ifdef ASSERT | |
2568 __ cmpl(flags, dtos); | |
2569 __ jcc(Assembler::notEqual, notDouble); | |
2570 #endif | |
2571 // dtos | |
2572 __ pop(dtos); | |
2573 if (!is_static) pop_and_check_object(obj); | |
2574 __ movdbl(field, xmm0); | |
2575 if (!is_static) { | |
2576 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx); | |
2577 } | |
2578 | |
2579 #ifdef ASSERT | |
2580 __ jmp(Done); | |
2581 | |
2582 __ bind(notDouble); | |
2583 __ stop("Bad state"); | |
2584 #endif | |
2585 | |
2586 __ bind(Done); | |
2587 // Check for volatile store | |
2588 __ testl(rdx, rdx); | |
2589 __ jcc(Assembler::zero, notVolatile); | |
2590 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2591 Assembler::StoreStore)); | |
2592 | |
2593 __ bind(notVolatile); | |
2594 } | |
2595 | |
2596 void TemplateTable::putfield(int byte_no) { | |
2597 putfield_or_static(byte_no, false); | |
2598 } | |
2599 | |
2600 void TemplateTable::putstatic(int byte_no) { | |
2601 putfield_or_static(byte_no, true); | |
2602 } | |
2603 | |
2604 void TemplateTable::jvmti_post_fast_field_mod() { | |
2605 if (JvmtiExport::can_post_field_modification()) { | |
2606 // Check to see if a field modification watch has been set before | |
2607 // we take the time to call into the VM. | |
2608 Label L2; | |
2609 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2610 __ testl(c_rarg3, c_rarg3); | |
2611 __ jcc(Assembler::zero, L2); | |
2612 __ pop_ptr(rbx); // copy the object pointer from tos | |
2613 __ verify_oop(rbx); | |
2614 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2615 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2616 __ mov(c_rarg3, rsp); | |
0 | 2617 const Address field(c_rarg3, 0); |
2618 | |
2619 switch (bytecode()) { // load values into the jvalue object | |
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2620 case Bytecodes::_fast_aputfield: __ movq(field, rax); break; |
0 | 2621 case Bytecodes::_fast_lputfield: __ movq(field, rax); break; |
2622 case Bytecodes::_fast_iputfield: __ movl(field, rax); break; | |
2623 case Bytecodes::_fast_bputfield: __ movb(field, rax); break; | |
2624 case Bytecodes::_fast_sputfield: // fall through | |
2625 case Bytecodes::_fast_cputfield: __ movw(field, rax); break; | |
2626 case Bytecodes::_fast_fputfield: __ movflt(field, xmm0); break; | |
2627 case Bytecodes::_fast_dputfield: __ movdbl(field, xmm0); break; | |
2628 default: | |
2629 ShouldNotReachHere(); | |
2630 } | |
2631 | |
2632 // Save rax because call_VM() will clobber it, then use it for | |
2633 // JVMTI purposes | |
304 | 2634 __ push(rax); |
0 | 2635 // access constant pool cache entry |
2636 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2637 __ verify_oop(rbx); | |
2638 // rbx: object pointer copied above | |
2639 // c_rarg2: cache entry pointer | |
2640 // c_rarg3: jvalue object on the stack | |
2641 __ call_VM(noreg, | |
2642 CAST_FROM_FN_PTR(address, | |
2643 InterpreterRuntime::post_field_modification), | |
2644 rbx, c_rarg2, c_rarg3); | |
304 | 2645 __ pop(rax); // restore lower value |
2646 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2647 __ bind(L2); |
2648 } | |
2649 } | |
2650 | |
2651 void TemplateTable::fast_storefield(TosState state) { | |
2652 transition(state, vtos); | |
2653 | |
2654 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2655 | |
2656 jvmti_post_fast_field_mod(); | |
2657 | |
2658 // access constant pool cache | |
2659 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2660 | |
2661 // test for volatile with rdx | |
2662 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2663 in_bytes(base + | |
2664 ConstantPoolCacheEntry::flags_offset()))); | |
2665 | |
2666 // replace index with field offset from cache entry | |
304 | 2667 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2668 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2669 |
2670 // [jk] not needed currently | |
2671 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2672 // Assembler::StoreStore)); | |
2673 | |
2674 Label notVolatile; | |
2675 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2676 __ andl(rdx, 0x1); | |
2677 | |
2678 // Get object from stack | |
2679 pop_and_check_object(rcx); | |
2680 | |
2681 // field address | |
2682 const Address field(rcx, rbx, Address::times_1); | |
2683 | |
2684 // access field | |
2685 switch (bytecode()) { | |
2686 case Bytecodes::_fast_aputfield: | |
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2687 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2688 break; |
2689 case Bytecodes::_fast_lputfield: | |
2690 __ movq(field, rax); | |
2691 break; | |
2692 case Bytecodes::_fast_iputfield: | |
2693 __ movl(field, rax); | |
2694 break; | |
2695 case Bytecodes::_fast_bputfield: | |
2696 __ movb(field, rax); | |
2697 break; | |
2698 case Bytecodes::_fast_sputfield: | |
2699 // fall through | |
2700 case Bytecodes::_fast_cputfield: | |
2701 __ movw(field, rax); | |
2702 break; | |
2703 case Bytecodes::_fast_fputfield: | |
2704 __ movflt(field, xmm0); | |
2705 break; | |
2706 case Bytecodes::_fast_dputfield: | |
2707 __ movdbl(field, xmm0); | |
2708 break; | |
2709 default: | |
2710 ShouldNotReachHere(); | |
2711 } | |
2712 | |
2713 // Check for volatile store | |
2714 __ testl(rdx, rdx); | |
2715 __ jcc(Assembler::zero, notVolatile); | |
2716 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2717 Assembler::StoreStore)); | |
2718 __ bind(notVolatile); | |
2719 } | |
2720 | |
2721 | |
2722 void TemplateTable::fast_accessfield(TosState state) { | |
2723 transition(atos, state); | |
2724 | |
2725 // Do the JVMTI work here to avoid disturbing the register state below | |
2726 if (JvmtiExport::can_post_field_access()) { | |
2727 // Check to see if a field access watch has been set before we | |
2728 // take the time to call into the VM. | |
2729 Label L1; | |
2730 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2731 __ testl(rcx, rcx); | |
2732 __ jcc(Assembler::zero, L1); | |
2733 // access constant pool cache entry | |
2734 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2735 __ verify_oop(rax); |
304 | 2736 __ mov(r12, rax); // save object pointer before call_VM() clobbers it |
2737 __ mov(c_rarg1, rax); | |
0 | 2738 // c_rarg1: object pointer copied above |
2739 // c_rarg2: cache entry pointer | |
2740 __ call_VM(noreg, | |
2741 CAST_FROM_FN_PTR(address, | |
2742 InterpreterRuntime::post_field_access), | |
2743 c_rarg1, c_rarg2); | |
304 | 2744 __ mov(rax, r12); // restore object pointer |
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2745 __ reinit_heapbase(); |
0 | 2746 __ bind(L1); |
2747 } | |
2748 | |
2749 // access constant pool cache | |
2750 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2751 // replace index with field offset from cache entry | |
2752 // [jk] not needed currently | |
2753 // if (os::is_MP()) { | |
2754 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2755 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2756 // ConstantPoolCacheEntry::flags_offset()))); | |
2757 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2758 // __ andl(rdx, 0x1); | |
2759 // } | |
304 | 2760 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2761 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2762 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2763 |
2764 // rax: object | |
2765 __ verify_oop(rax); | |
2766 __ null_check(rax); | |
2767 Address field(rax, rbx, Address::times_1); | |
2768 | |
2769 // access field | |
2770 switch (bytecode()) { | |
2771 case Bytecodes::_fast_agetfield: | |
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2772 __ load_heap_oop(rax, field); |
0 | 2773 __ verify_oop(rax); |
2774 break; | |
2775 case Bytecodes::_fast_lgetfield: | |
2776 __ movq(rax, field); | |
2777 break; | |
2778 case Bytecodes::_fast_igetfield: | |
2779 __ movl(rax, field); | |
2780 break; | |
2781 case Bytecodes::_fast_bgetfield: | |
2782 __ movsbl(rax, field); | |
2783 break; | |
2784 case Bytecodes::_fast_sgetfield: | |
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2785 __ load_signed_short(rax, field); |
0 | 2786 break; |
2787 case Bytecodes::_fast_cgetfield: | |
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2788 __ load_unsigned_short(rax, field); |
0 | 2789 break; |
2790 case Bytecodes::_fast_fgetfield: | |
2791 __ movflt(xmm0, field); | |
2792 break; | |
2793 case Bytecodes::_fast_dgetfield: | |
2794 __ movdbl(xmm0, field); | |
2795 break; | |
2796 default: | |
2797 ShouldNotReachHere(); | |
2798 } | |
2799 // [jk] not needed currently | |
2800 // if (os::is_MP()) { | |
2801 // Label notVolatile; | |
2802 // __ testl(rdx, rdx); | |
2803 // __ jcc(Assembler::zero, notVolatile); | |
2804 // __ membar(Assembler::LoadLoad); | |
2805 // __ bind(notVolatile); | |
2806 //}; | |
2807 } | |
2808 | |
2809 void TemplateTable::fast_xaccess(TosState state) { | |
2810 transition(vtos, state); | |
2811 | |
2812 // get receiver | |
304 | 2813 __ movptr(rax, aaddress(0)); |
0 | 2814 // access constant pool cache |
2815 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2816 __ movptr(rbx, |
2817 Address(rcx, rdx, Address::times_8, | |
2818 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2819 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2820 // make sure exception is reported in correct bcp range (getfield is |
2821 // next instruction) | |
304 | 2822 __ increment(r13); |
0 | 2823 __ null_check(rax); |
2824 switch (state) { | |
2825 case itos: | |
2826 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2827 break; | |
2828 case atos: | |
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2829 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2830 __ verify_oop(rax); |
2831 break; | |
2832 case ftos: | |
2833 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2834 break; | |
2835 default: | |
2836 ShouldNotReachHere(); | |
2837 } | |
2838 | |
2839 // [jk] not needed currently | |
2840 // if (os::is_MP()) { | |
2841 // Label notVolatile; | |
2842 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
2843 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2844 // ConstantPoolCacheEntry::flags_offset()))); | |
2845 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2846 // __ testl(rdx, 0x1); | |
2847 // __ jcc(Assembler::zero, notVolatile); | |
2848 // __ membar(Assembler::LoadLoad); | |
2849 // __ bind(notVolatile); | |
2850 // } | |
2851 | |
304 | 2852 __ decrement(r13); |
0 | 2853 } |
2854 | |
2855 | |
2856 | |
2857 //----------------------------------------------------------------------------- | |
2858 // Calls | |
2859 | |
2860 void TemplateTable::count_calls(Register method, Register temp) { | |
2861 // implemented elsewhere | |
2862 ShouldNotReachHere(); | |
2863 } | |
2864 | |
1108 | 2865 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2866 // determine flags |
1108 | 2867 Bytecodes::Code code = bytecode(); |
0 | 2868 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
1108 | 2869 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2870 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2871 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
1108 | 2872 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2873 const bool receiver_null_check = is_invokespecial; |
2874 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2875 // setup registers & access constant pool cache | |
2876 const Register recv = rcx; | |
2877 const Register flags = rdx; | |
2878 assert_different_registers(method, index, recv, flags); | |
2879 | |
2880 // save 'interpreter return address' | |
2881 __ save_bcp(); | |
2882 | |
1565 | 2883 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2884 |
2885 // load receiver if needed (note: no return address pushed yet) | |
2886 if (load_receiver) { | |
1565 | 2887 assert(!is_invokedynamic, ""); |
0 | 2888 __ movl(recv, flags); |
2889 __ andl(recv, 0xFF); | |
1108 | 2890 Address recv_addr(rsp, recv, Address::times_8, -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2891 __ movptr(recv, recv_addr); |
2892 __ verify_oop(recv); | |
0 | 2893 } |
2894 | |
2895 // do null check if needed | |
2896 if (receiver_null_check) { | |
2897 __ null_check(recv); | |
2898 } | |
2899 | |
2900 if (save_flags) { | |
2901 __ movl(r13, flags); | |
2902 } | |
2903 | |
2904 // compute return type | |
2905 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2906 // Make sure we don't need to mask flags for tosBits after the above shift | |
2907 ConstantPoolCacheEntry::verify_tosBits(); | |
2908 // load return address | |
2909 { | |
1108 | 2910 address table_addr; |
2911 if (is_invokeinterface || is_invokedynamic) | |
2912 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); | |
2913 else | |
2914 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); | |
2915 ExternalAddress table(table_addr); | |
2916 __ lea(rscratch1, table); | |
2917 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr)); | |
0 | 2918 } |
2919 | |
2920 // push return address | |
304 | 2921 __ push(flags); |
0 | 2922 |
2923 // Restore flag field from the constant pool cache, and restore esi | |
2924 // for later null checks. r13 is the bytecode pointer | |
2925 if (save_flags) { | |
2926 __ movl(flags, r13); | |
2927 __ restore_bcp(); | |
2928 } | |
2929 } | |
2930 | |
2931 | |
2932 void TemplateTable::invokevirtual_helper(Register index, | |
2933 Register recv, | |
2934 Register flags) { | |
1783 | 2935 // Uses temporary registers rax, rdx |
2936 assert_different_registers(index, recv, rax, rdx); | |
0 | 2937 |
2938 // Test for an invoke of a final method | |
2939 Label notFinal; | |
2940 __ movl(rax, flags); | |
2941 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2942 __ jcc(Assembler::zero, notFinal); | |
2943 | |
2944 const Register method = index; // method must be rbx | |
2945 assert(method == rbx, | |
2946 "methodOop must be rbx for interpreter calling convention"); | |
2947 | |
2948 // do the call - the index is actually the method to call | |
2949 __ verify_oop(method); | |
2950 | |
2951 // It's final, need a null check here! | |
2952 __ null_check(recv); | |
2953 | |
2954 // profile this call | |
2955 __ profile_final_call(rax); | |
2956 | |
2957 __ jump_from_interpreted(method, rax); | |
2958 | |
2959 __ bind(notFinal); | |
2960 | |
2961 // get receiver klass | |
2962 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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2963 __ load_klass(rax, recv); |
0 | 2964 |
2965 __ verify_oop(rax); | |
2966 | |
2967 // profile this call | |
2968 __ profile_virtual_call(rax, r14, rdx); | |
2969 | |
2970 // get target methodOop & entry point | |
2971 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2972 assert(vtableEntry::size() * wordSize == 8, | |
2973 "adjust the scaling in the code below"); | |
304 | 2974 __ movptr(method, Address(rax, index, |
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2975 Address::times_8, |
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2976 base + vtableEntry::method_offset_in_bytes())); |
304 | 2977 __ movptr(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
0 | 2978 __ jump_from_interpreted(method, rdx); |
2979 } | |
2980 | |
2981 | |
2982 void TemplateTable::invokevirtual(int byte_no) { | |
2983 transition(vtos, vtos); | |
1565 | 2984 assert(byte_no == f2_byte, "use this argument"); |
1108 | 2985 prepare_invoke(rbx, noreg, byte_no); |
0 | 2986 |
2987 // rbx: index | |
2988 // rcx: receiver | |
2989 // rdx: flags | |
2990 | |
2991 invokevirtual_helper(rbx, rcx, rdx); | |
2992 } | |
2993 | |
2994 | |
2995 void TemplateTable::invokespecial(int byte_no) { | |
2996 transition(vtos, vtos); | |
1565 | 2997 assert(byte_no == f1_byte, "use this argument"); |
1108 | 2998 prepare_invoke(rbx, noreg, byte_no); |
0 | 2999 // do the call |
3000 __ verify_oop(rbx); | |
3001 __ profile_call(rax); | |
3002 __ jump_from_interpreted(rbx, rax); | |
3003 } | |
3004 | |
3005 | |
3006 void TemplateTable::invokestatic(int byte_no) { | |
3007 transition(vtos, vtos); | |
1565 | 3008 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3009 prepare_invoke(rbx, noreg, byte_no); |
0 | 3010 // do the call |
3011 __ verify_oop(rbx); | |
3012 __ profile_call(rax); | |
3013 __ jump_from_interpreted(rbx, rax); | |
3014 } | |
3015 | |
3016 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3017 transition(vtos, vtos); | |
1565 | 3018 assert(byte_no == f2_byte, "use this argument"); |
0 | 3019 __ stop("fast_invokevfinal not used on amd64"); |
3020 } | |
3021 | |
3022 void TemplateTable::invokeinterface(int byte_no) { | |
3023 transition(vtos, vtos); | |
1565 | 3024 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3025 prepare_invoke(rax, rbx, byte_no); |
0 | 3026 |
3027 // rax: Interface | |
3028 // rbx: index | |
3029 // rcx: receiver | |
3030 // rdx: flags | |
3031 | |
3032 // Special case of invokeinterface called for virtual method of | |
3033 // java.lang.Object. See cpCacheOop.cpp for details. | |
3034 // This code isn't produced by javac, but could be produced by | |
3035 // another compliant java compiler. | |
3036 Label notMethod; | |
3037 __ movl(r14, rdx); | |
3038 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3039 __ jcc(Assembler::zero, notMethod); | |
3040 | |
3041 invokevirtual_helper(rbx, rcx, rdx); | |
3042 __ bind(notMethod); | |
3043 | |
3044 // Get receiver klass into rdx - also a null check | |
3045 __ restore_locals(); // restore r14 | |
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3046 __ load_klass(rdx, rcx); |
0 | 3047 __ verify_oop(rdx); |
3048 | |
3049 // profile this call | |
3050 __ profile_virtual_call(rdx, r13, r14); | |
3051 | |
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3052 Label no_such_interface, no_such_method; |
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3053 |
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3054 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3055 rdx, rax, rbx, |
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3056 // outputs: method, scan temp. reg |
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3057 rbx, r13, |
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3058 no_such_interface); |
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3059 |
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3060 // rbx,: methodOop to call |
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3061 // rcx: receiver |
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3062 // Check for abstract method error |
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3063 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3064 // interpreter entry point and a conditional jump to it in case of a null |
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3065 // method. |
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3066 __ testptr(rbx, rbx); |
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3067 __ jcc(Assembler::zero, no_such_method); |
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3068 |
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3069 // do the call |
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3070 // rcx: receiver |
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3071 // rbx,: methodOop |
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3072 __ jump_from_interpreted(rbx, rdx); |
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3073 __ should_not_reach_here(); |
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3074 |
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3075 // exception handling code follows... |
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3076 // note: must restore interpreter registers to canonical |
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3077 // state for exception handling to work correctly! |
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3078 |
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3079 __ bind(no_such_method); |
0 | 3080 // throw exception |
623
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3081 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3082 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3083 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3084 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3085 // the call_VM checks for exception, so we should never return here. |
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3086 __ should_not_reach_here(); |
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3087 |
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3088 __ bind(no_such_interface); |
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3089 // throw exception |
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3090 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3091 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3092 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3093 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3094 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3095 // the call_VM checks for exception, so we should never return here. | |
3096 __ should_not_reach_here(); | |
623
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3097 return; |
0 | 3098 } |
3099 | |
726
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6655646: dynamic languages need dynamically linked call sites
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3100 void TemplateTable::invokedynamic(int byte_no) { |
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3101 transition(vtos, vtos); |
1565 | 3102 assert(byte_no == f1_oop, "use this argument"); |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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3103 |
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6655646: dynamic languages need dynamically linked call sites
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3104 if (!EnableInvokeDynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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3105 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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6655646: dynamic languages need dynamically linked call sites
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3106 // The verifier will stop it. However, if we get past the verifier, |
be93aad57795
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3107 // this will stop the thread in a reasonable way, without crashing the JVM. |
be93aad57795
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3108 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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6655646: dynamic languages need dynamically linked call sites
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|
3109 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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|
3110 // the call_VM checks for exception, so we should never return here. |
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6655646: dynamic languages need dynamically linked call sites
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|
3111 __ should_not_reach_here(); |
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3112 return; |
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6655646: dynamic languages need dynamically linked call sites
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|
3113 } |
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3114 |
1565 | 3115 assert(byte_no == f1_oop, "use this argument"); |
1108 | 3116 prepare_invoke(rax, rbx, byte_no); |
3117 | |
3118 // rax: CallSite object (f1) | |
3119 // rbx: unused (f2) | |
3120 // rcx: receiver address | |
3121 // rdx: flags (unused) | |
3122 | |
1846 | 3123 Register rax_callsite = rax; |
3124 Register rcx_method_handle = rcx; | |
3125 | |
1108 | 3126 if (ProfileInterpreter) { |
3127 // %%% should make a type profile for any invokedynamic that takes a ref argument | |
3128 // profile this call | |
3129 __ profile_call(r13); | |
3130 } | |
3131 | |
1846 | 3132 __ load_heap_oop(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_dyn_CallSite::target_offset_in_bytes, rcx))); |
3133 __ null_check(rcx_method_handle); | |
1108 | 3134 __ prepare_to_jump_from_interpreted(); |
1846 | 3135 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
726
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3136 } |
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3137 |
623
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3138 |
0 | 3139 //----------------------------------------------------------------------------- |
3140 // Allocation | |
3141 | |
3142 void TemplateTable::_new() { | |
3143 transition(vtos, atos); | |
3144 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3145 Label slow_case; | |
3146 Label done; | |
3147 Label initialize_header; | |
3148 Label initialize_object; // including clearing the fields | |
3149 Label allocate_shared; | |
3150 | |
3151 __ get_cpool_and_tags(rsi, rax); | |
1681
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3152 // Make sure the class we're about to instantiate has been resolved. |
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3153 // This is done before loading instanceKlass to be consistent with the order |
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3154 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
0 | 3155 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
3156 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
3157 JVM_CONSTANT_Class); | |
3158 __ jcc(Assembler::notEqual, slow_case); | |
3159 | |
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3160 // get instanceKlass |
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3161 __ movptr(rsi, Address(rsi, rdx, |
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3162 Address::times_8, sizeof(constantPoolOopDesc))); |
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3163 |
0 | 3164 // make sure klass is initialized & doesn't have finalizer |
3165 // make sure klass is fully initialized | |
3166 __ cmpl(Address(rsi, | |
3167 instanceKlass::init_state_offset_in_bytes() + | |
3168 sizeof(oopDesc)), | |
3169 instanceKlass::fully_initialized); | |
3170 __ jcc(Assembler::notEqual, slow_case); | |
3171 | |
3172 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3173 __ movl(rdx, | |
3174 Address(rsi, | |
3175 Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3176 // test to see if it has a finalizer or is malformed in some way | |
3177 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3178 __ jcc(Assembler::notZero, slow_case); | |
3179 | |
3180 // Allocate the instance | |
3181 // 1) Try to allocate in the TLAB | |
3182 // 2) if fail and the object is large allocate in the shared Eden | |
3183 // 3) if the above fails (or is not applicable), go to a slow case | |
3184 // (creates a new TLAB, etc.) | |
3185 | |
3186 const bool allow_shared_alloc = | |
3187 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3188 | |
3189 if (UseTLAB) { | |
304 | 3190 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3191 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3192 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3193 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3194 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3195 if (ZeroTLAB) { |
3196 // the fields have been already cleared | |
3197 __ jmp(initialize_header); | |
3198 } else { | |
3199 // initialize both the header and fields | |
3200 __ jmp(initialize_object); | |
3201 } | |
3202 } | |
3203 | |
3204 // Allocation in the shared Eden, if allowed. | |
3205 // | |
3206 // rdx: instance size in bytes | |
3207 if (allow_shared_alloc) { | |
3208 __ bind(allocate_shared); | |
3209 | |
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3210 ExternalAddress top((address)Universe::heap()->top_addr()); |
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3211 ExternalAddress end((address)Universe::heap()->end_addr()); |
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3212 |
0 | 3213 const Register RtopAddr = rscratch1; |
3214 const Register RendAddr = rscratch2; | |
3215 | |
3216 __ lea(RtopAddr, top); | |
3217 __ lea(RendAddr, end); | |
304 | 3218 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3219 |
3220 // For retries rax gets set by cmpxchgq | |
3221 Label retry; | |
3222 __ bind(retry); | |
304 | 3223 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3224 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3225 __ jcc(Assembler::above, slow_case); |
3226 | |
3227 // Compare rax with the top addr, and if still equal, store the new | |
3228 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3229 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3230 // | |
3231 // rax: object begin | |
3232 // rbx: object end | |
3233 // rdx: instance size in bytes | |
3234 if (os::is_MP()) { | |
3235 __ lock(); | |
3236 } | |
304 | 3237 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3238 |
3239 // if someone beat us on the allocation, try again, otherwise continue | |
3240 __ jcc(Assembler::notEqual, retry); | |
3241 } | |
3242 | |
3243 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3244 // The object is initialized before the header. If the object size is | |
3245 // zero, go directly to the header initialization. | |
3246 __ bind(initialize_object); | |
3247 __ decrementl(rdx, sizeof(oopDesc)); | |
3248 __ jcc(Assembler::zero, initialize_header); | |
3249 | |
3250 // Initialize object fields | |
3251 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3252 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3253 { | |
3254 Label loop; | |
3255 __ bind(loop); | |
3256 __ movq(Address(rax, rdx, Address::times_8, | |
3257 sizeof(oopDesc) - oopSize), | |
3258 rcx); | |
3259 __ decrementl(rdx); | |
3260 __ jcc(Assembler::notZero, loop); | |
3261 } | |
3262 | |
3263 // initialize object header only. | |
3264 __ bind(initialize_header); | |
3265 if (UseBiasedLocking) { | |
304 | 3266 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); |
3267 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); | |
0 | 3268 } else { |
3269 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3270 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3271 } | |
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3272 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
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3273 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
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3274 __ store_klass(rax, rsi); // store klass last |
1248
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3275 |
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3276 { |
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3277 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); |
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3278 // Trigger dtrace event for fastpath |
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3279 __ push(atos); // save the return value |
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3280 __ call_VM_leaf( |
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3281 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
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3282 __ pop(atos); // restore the return value |
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3283 |
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3284 } |
0 | 3285 __ jmp(done); |
3286 } | |
3287 | |
3288 | |
3289 // slow case | |
3290 __ bind(slow_case); | |
3291 __ get_constant_pool(c_rarg1); | |
3292 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3293 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3294 __ verify_oop(rax); | |
3295 | |
3296 // continue | |
3297 __ bind(done); | |
3298 } | |
3299 | |
3300 void TemplateTable::newarray() { | |
3301 transition(itos, atos); | |
3302 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3303 __ movl(c_rarg2, rax); | |
3304 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3305 c_rarg1, c_rarg2); | |
3306 } | |
3307 | |
3308 void TemplateTable::anewarray() { | |
3309 transition(itos, atos); | |
3310 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3311 __ get_constant_pool(c_rarg1); | |
3312 __ movl(c_rarg3, rax); | |
3313 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3314 c_rarg1, c_rarg2, c_rarg3); | |
3315 } | |
3316 | |
3317 void TemplateTable::arraylength() { | |
3318 transition(atos, itos); | |
3319 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3320 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3321 } | |
3322 | |
3323 void TemplateTable::checkcast() { | |
3324 transition(atos, atos); | |
3325 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3326 __ testptr(rax, rax); // object is in rax |
0 | 3327 __ jcc(Assembler::zero, is_null); |
3328 | |
3329 // Get cpool & tags index | |
3330 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3331 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3332 // See if bytecode has already been quicked | |
3333 __ cmpb(Address(rdx, rbx, | |
3334 Address::times_1, | |
3335 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3336 JVM_CONSTANT_Class); | |
3337 __ jcc(Assembler::equal, quicked); | |
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3338 __ push(atos); // save receiver for result, and for GC |
304 | 3339 __ mov(r12, rcx); // save rcx XXX |
0 | 3340 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3341 __ movq(rcx, r12); // restore rcx XXX |
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3342 __ reinit_heapbase(); |
0 | 3343 __ pop_ptr(rdx); // restore receiver |
3344 __ jmpb(resolved); | |
3345 | |
3346 // Get superklass in rax and subklass in rbx | |
3347 __ bind(quicked); | |
304 | 3348 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3349 __ movptr(rax, Address(rcx, rbx, | |
0 | 3350 Address::times_8, sizeof(constantPoolOopDesc))); |
3351 | |
3352 __ bind(resolved); | |
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3353 __ load_klass(rbx, rdx); |
0 | 3354 |
3355 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3356 // Superklass in rax. Subklass in rbx. | |
3357 __ gen_subtype_check(rbx, ok_is_subtype); | |
3358 | |
3359 // Come here on failure | |
3360 __ push_ptr(rdx); | |
3361 // object is at TOS | |
3362 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3363 | |
3364 // Come here on success | |
3365 __ bind(ok_is_subtype); | |
304 | 3366 __ mov(rax, rdx); // Restore object in rdx |
0 | 3367 |
3368 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3369 if (ProfileInterpreter) { | |
3370 __ jmp(done); | |
3371 __ bind(is_null); | |
3372 __ profile_null_seen(rcx); | |
3373 } else { | |
3374 __ bind(is_null); // same as 'done' | |
3375 } | |
3376 __ bind(done); | |
3377 } | |
3378 | |
3379 void TemplateTable::instanceof() { | |
3380 transition(atos, itos); | |
3381 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3382 __ testptr(rax, rax); |
0 | 3383 __ jcc(Assembler::zero, is_null); |
3384 | |
3385 // Get cpool & tags index | |
3386 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3387 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3388 // See if bytecode has already been quicked | |
3389 __ cmpb(Address(rdx, rbx, | |
3390 Address::times_1, | |
3391 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3392 JVM_CONSTANT_Class); | |
3393 __ jcc(Assembler::equal, quicked); | |
3394 | |
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3395 __ push(atos); // save receiver for result, and for GC |
304 | 3396 __ mov(r12, rcx); // save rcx |
0 | 3397 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3398 __ movq(rcx, r12); // restore rcx |
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3399 __ reinit_heapbase(); |
0 | 3400 __ pop_ptr(rdx); // restore receiver |
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3401 __ load_klass(rdx, rdx); |
0 | 3402 __ jmpb(resolved); |
3403 | |
3404 // Get superklass in rax and subklass in rdx | |
3405 __ bind(quicked); | |
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3406 __ load_klass(rdx, rax); |
304 | 3407 __ movptr(rax, Address(rcx, rbx, |
3408 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3409 |
3410 __ bind(resolved); | |
3411 | |
3412 // Generate subtype check. Blows rcx, rdi | |
3413 // Superklass in rax. Subklass in rdx. | |
3414 __ gen_subtype_check(rdx, ok_is_subtype); | |
3415 | |
3416 // Come here on failure | |
3417 __ xorl(rax, rax); | |
3418 __ jmpb(done); | |
3419 // Come here on success | |
3420 __ bind(ok_is_subtype); | |
3421 __ movl(rax, 1); | |
3422 | |
3423 // Collect counts on whether this test sees NULLs a lot or not. | |
3424 if (ProfileInterpreter) { | |
3425 __ jmp(done); | |
3426 __ bind(is_null); | |
3427 __ profile_null_seen(rcx); | |
3428 } else { | |
3429 __ bind(is_null); // same as 'done' | |
3430 } | |
3431 __ bind(done); | |
3432 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3433 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3434 } | |
3435 | |
3436 //----------------------------------------------------------------------------- | |
3437 // Breakpoints | |
3438 void TemplateTable::_breakpoint() { | |
3439 // Note: We get here even if we are single stepping.. | |
3440 // jbug inists on setting breakpoints at every bytecode | |
3441 // even if we are in single step mode. | |
3442 | |
3443 transition(vtos, vtos); | |
3444 | |
3445 // get the unpatched byte code | |
3446 __ get_method(c_rarg1); | |
3447 __ call_VM(noreg, | |
3448 CAST_FROM_FN_PTR(address, | |
3449 InterpreterRuntime::get_original_bytecode_at), | |
3450 c_rarg1, r13); | |
304 | 3451 __ mov(rbx, rax); |
0 | 3452 |
3453 // post the breakpoint event | |
3454 __ get_method(c_rarg1); | |
3455 __ call_VM(noreg, | |
3456 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3457 c_rarg1, r13); | |
3458 | |
3459 // complete the execution of original bytecode | |
3460 __ dispatch_only_normal(vtos); | |
3461 } | |
3462 | |
3463 //----------------------------------------------------------------------------- | |
3464 // Exceptions | |
3465 | |
3466 void TemplateTable::athrow() { | |
3467 transition(atos, vtos); | |
3468 __ null_check(rax); | |
3469 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3470 } | |
3471 | |
3472 //----------------------------------------------------------------------------- | |
3473 // Synchronization | |
3474 // | |
3475 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3476 // in the assembly code structure as well | |
3477 // | |
3478 // Stack layout: | |
3479 // | |
3480 // [expressions ] <--- rsp = expression stack top | |
3481 // .. | |
3482 // [expressions ] | |
3483 // [monitor entry] <--- monitor block top = expression stack bot | |
3484 // .. | |
3485 // [monitor entry] | |
3486 // [frame data ] <--- monitor block bot | |
3487 // ... | |
3488 // [saved rbp ] <--- rbp | |
3489 void TemplateTable::monitorenter() { | |
3490 transition(atos, vtos); | |
3491 | |
3492 // check for NULL object | |
3493 __ null_check(rax); | |
3494 | |
3495 const Address monitor_block_top( | |
3496 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3497 const Address monitor_block_bot( | |
3498 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3499 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3500 | |
3501 Label allocated; | |
3502 | |
3503 // initialize entry pointer | |
3504 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3505 | |
3506 // find a free slot in the monitor block (result in c_rarg1) | |
3507 { | |
3508 Label entry, loop, exit; | |
304 | 3509 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3510 // starting with top-most entry |
304 | 3511 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3512 // of monitor block |
3513 __ jmpb(entry); | |
3514 | |
3515 __ bind(loop); | |
3516 // check if current entry is used | |
304 | 3517 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3518 // if not used then remember entry in c_rarg1 |
304 | 3519 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3520 // check if current entry is for same object |
304 | 3521 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3522 // if same object then stop searching |
3523 __ jccb(Assembler::equal, exit); | |
3524 // otherwise advance to next entry | |
304 | 3525 __ addptr(c_rarg3, entry_size); |
0 | 3526 __ bind(entry); |
3527 // check if bottom reached | |
304 | 3528 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3529 // if not at bottom then check this entry |
3530 __ jcc(Assembler::notEqual, loop); | |
3531 __ bind(exit); | |
3532 } | |
3533 | |
304 | 3534 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3535 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3536 | |
3537 // allocate one if there's no free slot | |
3538 { | |
3539 Label entry, loop; | |
304 | 3540 // 1. compute new pointers // rsp: old expression stack top |
3541 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3542 __ subptr(rsp, entry_size); // move expression stack top | |
3543 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3544 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3545 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3546 __ jmp(entry); |
3547 // 2. move expression stack contents | |
3548 __ bind(loop); | |
304 | 3549 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3550 // word from old location | |
3551 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3552 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3553 __ bind(entry); |
304 | 3554 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3555 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3556 // copy next word | |
3557 } | |
3558 | |
3559 // call run-time routine | |
3560 // c_rarg1: points to monitor entry | |
3561 __ bind(allocated); | |
3562 | |
3563 // Increment bcp to point to the next bytecode, so exception | |
3564 // handling for async. exceptions work correctly. | |
3565 // The object has already been poped from the stack, so the | |
3566 // expression stack looks correct. | |
304 | 3567 __ increment(r13); |
0 | 3568 |
3569 // store object | |
304 | 3570 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3571 __ lock_object(c_rarg1); |
3572 | |
3573 // check to make sure this monitor doesn't cause stack overflow after locking | |
3574 __ save_bcp(); // in case of exception | |
3575 __ generate_stack_overflow_check(0); | |
3576 | |
3577 // The bcp has already been incremented. Just need to dispatch to | |
3578 // next instruction. | |
3579 __ dispatch_next(vtos); | |
3580 } | |
3581 | |
3582 | |
3583 void TemplateTable::monitorexit() { | |
3584 transition(atos, vtos); | |
3585 | |
3586 // check for NULL object | |
3587 __ null_check(rax); | |
3588 | |
3589 const Address monitor_block_top( | |
3590 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3591 const Address monitor_block_bot( | |
3592 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3593 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3594 | |
3595 Label found; | |
3596 | |
3597 // find matching slot | |
3598 { | |
3599 Label entry, loop; | |
304 | 3600 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3601 // starting with top-most entry |
304 | 3602 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3603 // of monitor block |
3604 __ jmpb(entry); | |
3605 | |
3606 __ bind(loop); | |
3607 // check if current entry is for same object | |
304 | 3608 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3609 // if same object then stop searching |
3610 __ jcc(Assembler::equal, found); | |
3611 // otherwise advance to next entry | |
304 | 3612 __ addptr(c_rarg1, entry_size); |
0 | 3613 __ bind(entry); |
3614 // check if bottom reached | |
304 | 3615 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3616 // if not at bottom then check this entry |
3617 __ jcc(Assembler::notEqual, loop); | |
3618 } | |
3619 | |
3620 // error handling. Unlocking was not block-structured | |
3621 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3622 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3623 __ should_not_reach_here(); | |
3624 | |
3625 // call run-time routine | |
3626 // rsi: points to monitor entry | |
3627 __ bind(found); | |
3628 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3629 __ unlock_object(c_rarg1); | |
3630 __ pop_ptr(rax); // discard object | |
3631 } | |
3632 | |
3633 | |
3634 // Wide instructions | |
3635 void TemplateTable::wide() { | |
3636 transition(vtos, vtos); | |
3637 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3638 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3639 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3640 // Note: the r13 increment step is part of the individual wide | |
3641 // bytecode implementations | |
3642 } | |
3643 | |
3644 | |
3645 // Multi arrays | |
3646 void TemplateTable::multianewarray() { | |
3647 transition(vtos, atos); | |
3648 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3649 // last dim is on top of stack; we want address of first one: | |
3650 // first_addr = last_addr + (ndims - 1) * wordSize | |
304 | 3651 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3652 call_VM(rax, |
3653 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3654 c_rarg1); | |
3655 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3656 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3657 } |
304 | 3658 #endif // !CC_INTERP |