Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 1299:9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
Summary: Passing a null pointer to an InvokeDynamic function call should lead to a NullPointerException.
Reviewed-by: kvn, never
author | twisti |
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date | Tue, 16 Mar 2010 11:52:17 +0100 |
parents | 455df1b81409 |
children | 76c1d7d13ec5 |
rev | line source |
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0 | 1 /* |
844 | 2 * Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_templateTable_x86_64.cpp.incl" | |
27 | |
304 | 28 #ifndef CC_INTERP |
29 | |
0 | 30 #define __ _masm-> |
31 | |
32 // Platform-dependent initialization | |
33 | |
34 void TemplateTable::pd_initialize() { | |
35 // No amd64 specific initialization | |
36 } | |
37 | |
38 // Address computation: local variables | |
39 | |
40 static inline Address iaddress(int n) { | |
41 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
42 } | |
43 | |
44 static inline Address laddress(int n) { | |
45 return iaddress(n + 1); | |
46 } | |
47 | |
48 static inline Address faddress(int n) { | |
49 return iaddress(n); | |
50 } | |
51 | |
52 static inline Address daddress(int n) { | |
53 return laddress(n); | |
54 } | |
55 | |
56 static inline Address aaddress(int n) { | |
57 return iaddress(n); | |
58 } | |
59 | |
60 static inline Address iaddress(Register r) { | |
61 return Address(r14, r, Address::times_8, Interpreter::value_offset_in_bytes()); | |
62 } | |
63 | |
64 static inline Address laddress(Register r) { | |
65 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
66 } | |
67 | |
68 static inline Address faddress(Register r) { | |
69 return iaddress(r); | |
70 } | |
71 | |
72 static inline Address daddress(Register r) { | |
73 return laddress(r); | |
74 } | |
75 | |
76 static inline Address aaddress(Register r) { | |
77 return iaddress(r); | |
78 } | |
79 | |
80 static inline Address at_rsp() { | |
81 return Address(rsp, 0); | |
82 } | |
83 | |
84 // At top of Java expression stack which may be different than esp(). It | |
85 // isn't for category 1 objects. | |
86 static inline Address at_tos () { | |
87 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
88 } | |
89 | |
90 static inline Address at_tos_p1() { | |
91 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
92 } | |
93 | |
94 static inline Address at_tos_p2() { | |
95 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
96 } | |
97 | |
98 static inline Address at_tos_p3() { | |
99 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
100 } | |
101 | |
102 // Condition conversion | |
103 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
104 switch (cc) { | |
105 case TemplateTable::equal : return Assembler::notEqual; | |
106 case TemplateTable::not_equal : return Assembler::equal; | |
107 case TemplateTable::less : return Assembler::greaterEqual; | |
108 case TemplateTable::less_equal : return Assembler::greater; | |
109 case TemplateTable::greater : return Assembler::lessEqual; | |
110 case TemplateTable::greater_equal: return Assembler::less; | |
111 } | |
112 ShouldNotReachHere(); | |
113 return Assembler::zero; | |
114 } | |
115 | |
116 | |
117 // Miscelaneous helper routines | |
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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 | |
392 void TemplateTable::ldc2_w() { | |
393 transition(vtos, vtos); | |
394 Label Long, Done; | |
395 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
396 | |
397 __ get_cpool_and_tags(rcx, rax); | |
398 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
399 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
400 | |
401 // get type | |
402 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
403 JVM_CONSTANT_Double); | |
404 __ jccb(Assembler::notEqual, Long); | |
405 // dtos | |
406 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
407 __ push_d(); | |
408 __ jmpb(Done); | |
409 | |
410 __ bind(Long); | |
411 // ltos | |
412 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
413 __ push_l(); | |
414 | |
415 __ bind(Done); | |
416 } | |
417 | |
418 void TemplateTable::locals_index(Register reg, int offset) { | |
419 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 420 __ negptr(reg); |
421 if (TaggedStackInterpreter) __ shlptr(reg, 1); // index = index*2 | |
0 | 422 } |
423 | |
424 void TemplateTable::iload() { | |
425 transition(vtos, itos); | |
426 if (RewriteFrequentPairs) { | |
427 Label rewrite, done; | |
428 const Register bc = c_rarg3; | |
429 assert(rbx != bc, "register damaged"); | |
430 | |
431 // get next byte | |
432 __ load_unsigned_byte(rbx, | |
433 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
434 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
435 // last two iloads in a pair. Comparing against fast_iload means that | |
436 // the next bytecode is neither an iload or a caload, and therefore | |
437 // an iload pair. | |
438 __ cmpl(rbx, Bytecodes::_iload); | |
439 __ jcc(Assembler::equal, done); | |
440 | |
441 __ cmpl(rbx, Bytecodes::_fast_iload); | |
442 __ movl(bc, Bytecodes::_fast_iload2); | |
443 __ jccb(Assembler::equal, rewrite); | |
444 | |
445 // if _caload, rewrite to fast_icaload | |
446 __ cmpl(rbx, Bytecodes::_caload); | |
447 __ movl(bc, Bytecodes::_fast_icaload); | |
448 __ jccb(Assembler::equal, rewrite); | |
449 | |
450 // rewrite so iload doesn't check again. | |
451 __ movl(bc, Bytecodes::_fast_iload); | |
452 | |
453 // rewrite | |
454 // bc: fast bytecode | |
455 __ bind(rewrite); | |
456 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
457 __ bind(done); | |
458 } | |
459 | |
460 // Get the local value into tos | |
461 locals_index(rbx); | |
462 __ movl(rax, iaddress(rbx)); | |
463 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
464 } | |
465 | |
466 void TemplateTable::fast_iload2() { | |
467 transition(vtos, itos); | |
468 locals_index(rbx); | |
469 __ movl(rax, iaddress(rbx)); | |
470 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
471 __ push(itos); | |
472 locals_index(rbx, 3); | |
473 __ movl(rax, iaddress(rbx)); | |
474 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
475 } | |
476 | |
477 void TemplateTable::fast_iload() { | |
478 transition(vtos, itos); | |
479 locals_index(rbx); | |
480 __ movl(rax, iaddress(rbx)); | |
481 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
482 } | |
483 | |
484 void TemplateTable::lload() { | |
485 transition(vtos, ltos); | |
486 locals_index(rbx); | |
487 __ movq(rax, laddress(rbx)); | |
488 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
489 } | |
490 | |
491 void TemplateTable::fload() { | |
492 transition(vtos, ftos); | |
493 locals_index(rbx); | |
494 __ movflt(xmm0, faddress(rbx)); | |
495 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
496 } | |
497 | |
498 void TemplateTable::dload() { | |
499 transition(vtos, dtos); | |
500 locals_index(rbx); | |
501 __ movdbl(xmm0, daddress(rbx)); | |
502 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
503 } | |
504 | |
505 void TemplateTable::aload() { | |
506 transition(vtos, atos); | |
507 locals_index(rbx); | |
304 | 508 __ movptr(rax, aaddress(rbx)); |
0 | 509 debug_only(__ verify_local_tag(frame::TagReference, rbx)); |
510 } | |
511 | |
512 void TemplateTable::locals_index_wide(Register reg) { | |
513 __ movl(reg, at_bcp(2)); | |
514 __ bswapl(reg); | |
515 __ shrl(reg, 16); | |
304 | 516 __ negptr(reg); |
517 if (TaggedStackInterpreter) __ shlptr(reg, 1); // index = index*2 | |
0 | 518 } |
519 | |
520 void TemplateTable::wide_iload() { | |
521 transition(vtos, itos); | |
522 locals_index_wide(rbx); | |
523 __ movl(rax, iaddress(rbx)); | |
524 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
525 } | |
526 | |
527 void TemplateTable::wide_lload() { | |
528 transition(vtos, ltos); | |
529 locals_index_wide(rbx); | |
530 __ movq(rax, laddress(rbx)); | |
531 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
532 } | |
533 | |
534 void TemplateTable::wide_fload() { | |
535 transition(vtos, ftos); | |
536 locals_index_wide(rbx); | |
537 __ movflt(xmm0, faddress(rbx)); | |
538 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
539 } | |
540 | |
541 void TemplateTable::wide_dload() { | |
542 transition(vtos, dtos); | |
543 locals_index_wide(rbx); | |
544 __ movdbl(xmm0, daddress(rbx)); | |
545 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
546 } | |
547 | |
548 void TemplateTable::wide_aload() { | |
549 transition(vtos, atos); | |
550 locals_index_wide(rbx); | |
304 | 551 __ movptr(rax, aaddress(rbx)); |
0 | 552 debug_only(__ verify_local_tag(frame::TagReference, rbx)); |
553 } | |
554 | |
555 void TemplateTable::index_check(Register array, Register index) { | |
556 // destroys rbx | |
557 // check array | |
558 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
559 // sign extend index for use by indexed load | |
304 | 560 __ movl2ptr(index, index); |
0 | 561 // check index |
562 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
563 if (index != rbx) { | |
564 // ??? convention: move aberrant index into ebx for exception message | |
565 assert(rbx != array, "different registers"); | |
566 __ movl(rbx, index); | |
567 } | |
568 __ jump_cc(Assembler::aboveEqual, | |
569 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
570 } | |
571 | |
572 void TemplateTable::iaload() { | |
573 transition(itos, itos); | |
574 __ pop_ptr(rdx); | |
575 // eax: index | |
576 // rdx: array | |
577 index_check(rdx, rax); // kills rbx | |
578 __ movl(rax, Address(rdx, rax, | |
579 Address::times_4, | |
580 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
581 } | |
582 | |
583 void TemplateTable::laload() { | |
584 transition(itos, ltos); | |
585 __ pop_ptr(rdx); | |
586 // eax: index | |
587 // rdx: array | |
588 index_check(rdx, rax); // kills rbx | |
589 __ movq(rax, Address(rdx, rbx, | |
590 Address::times_8, | |
591 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
592 } | |
593 | |
594 void TemplateTable::faload() { | |
595 transition(itos, ftos); | |
596 __ pop_ptr(rdx); | |
597 // eax: index | |
598 // rdx: array | |
599 index_check(rdx, rax); // kills rbx | |
600 __ movflt(xmm0, Address(rdx, rax, | |
601 Address::times_4, | |
602 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
603 } | |
604 | |
605 void TemplateTable::daload() { | |
606 transition(itos, dtos); | |
607 __ pop_ptr(rdx); | |
608 // eax: index | |
609 // rdx: array | |
610 index_check(rdx, rax); // kills rbx | |
611 __ movdbl(xmm0, Address(rdx, rax, | |
612 Address::times_8, | |
613 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
614 } | |
615 | |
616 void TemplateTable::aaload() { | |
617 transition(itos, atos); | |
618 __ pop_ptr(rdx); | |
619 // eax: index | |
620 // rdx: array | |
621 index_check(rdx, rax); // kills rbx | |
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622 __ load_heap_oop(rax, Address(rdx, rax, |
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623 UseCompressedOops ? Address::times_4 : Address::times_8, |
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624 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 625 } |
626 | |
627 void TemplateTable::baload() { | |
628 transition(itos, itos); | |
629 __ pop_ptr(rdx); | |
630 // eax: index | |
631 // rdx: array | |
632 index_check(rdx, rax); // kills rbx | |
633 __ load_signed_byte(rax, | |
634 Address(rdx, rax, | |
635 Address::times_1, | |
636 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
637 } | |
638 | |
639 void TemplateTable::caload() { | |
640 transition(itos, itos); | |
641 __ pop_ptr(rdx); | |
642 // eax: index | |
643 // rdx: array | |
644 index_check(rdx, rax); // kills rbx | |
622
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645 __ load_unsigned_short(rax, |
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646 Address(rdx, rax, |
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647 Address::times_2, |
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648 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 649 } |
650 | |
651 // iload followed by caload frequent pair | |
652 void TemplateTable::fast_icaload() { | |
653 transition(vtos, itos); | |
654 // load index out of locals | |
655 locals_index(rbx); | |
656 __ movl(rax, iaddress(rbx)); | |
657 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
658 | |
659 // eax: index | |
660 // rdx: array | |
661 __ pop_ptr(rdx); | |
662 index_check(rdx, rax); // kills rbx | |
622
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663 __ load_unsigned_short(rax, |
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664 Address(rdx, rax, |
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665 Address::times_2, |
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666 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 667 } |
668 | |
669 void TemplateTable::saload() { | |
670 transition(itos, itos); | |
671 __ pop_ptr(rdx); | |
672 // eax: index | |
673 // rdx: array | |
674 index_check(rdx, rax); // kills rbx | |
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675 __ load_signed_short(rax, |
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676 Address(rdx, rax, |
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677 Address::times_2, |
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678 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 679 } |
680 | |
681 void TemplateTable::iload(int n) { | |
682 transition(vtos, itos); | |
683 __ movl(rax, iaddress(n)); | |
684 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
685 } | |
686 | |
687 void TemplateTable::lload(int n) { | |
688 transition(vtos, ltos); | |
689 __ movq(rax, laddress(n)); | |
690 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
691 } | |
692 | |
693 void TemplateTable::fload(int n) { | |
694 transition(vtos, ftos); | |
695 __ movflt(xmm0, faddress(n)); | |
696 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
697 } | |
698 | |
699 void TemplateTable::dload(int n) { | |
700 transition(vtos, dtos); | |
701 __ movdbl(xmm0, daddress(n)); | |
702 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
703 } | |
704 | |
705 void TemplateTable::aload(int n) { | |
706 transition(vtos, atos); | |
304 | 707 __ movptr(rax, aaddress(n)); |
0 | 708 debug_only(__ verify_local_tag(frame::TagReference, n)); |
709 } | |
710 | |
711 void TemplateTable::aload_0() { | |
712 transition(vtos, atos); | |
713 // According to bytecode histograms, the pairs: | |
714 // | |
715 // _aload_0, _fast_igetfield | |
716 // _aload_0, _fast_agetfield | |
717 // _aload_0, _fast_fgetfield | |
718 // | |
719 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
720 // _aload_0 bytecode checks if the next bytecode is either | |
721 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
722 // rewrites the current bytecode into a pair bytecode; otherwise it | |
723 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
724 // the pair check anymore. | |
725 // | |
726 // Note: If the next bytecode is _getfield, the rewrite must be | |
727 // delayed, otherwise we may miss an opportunity for a pair. | |
728 // | |
729 // Also rewrite frequent pairs | |
730 // aload_0, aload_1 | |
731 // aload_0, iload_1 | |
732 // These bytecodes with a small amount of code are most profitable | |
733 // to rewrite | |
734 if (RewriteFrequentPairs) { | |
735 Label rewrite, done; | |
736 const Register bc = c_rarg3; | |
737 assert(rbx != bc, "register damaged"); | |
738 // get next byte | |
739 __ load_unsigned_byte(rbx, | |
740 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
741 | |
742 // do actual aload_0 | |
743 aload(0); | |
744 | |
745 // if _getfield then wait with rewrite | |
746 __ cmpl(rbx, Bytecodes::_getfield); | |
747 __ jcc(Assembler::equal, done); | |
748 | |
749 // if _igetfield then reqrite to _fast_iaccess_0 | |
750 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
751 Bytecodes::_aload_0, | |
752 "fix bytecode definition"); | |
753 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
754 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
755 __ jccb(Assembler::equal, rewrite); | |
756 | |
757 // if _agetfield then reqrite to _fast_aaccess_0 | |
758 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
759 Bytecodes::_aload_0, | |
760 "fix bytecode definition"); | |
761 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
762 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
763 __ jccb(Assembler::equal, rewrite); | |
764 | |
765 // if _fgetfield then reqrite to _fast_faccess_0 | |
766 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
767 Bytecodes::_aload_0, | |
768 "fix bytecode definition"); | |
769 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
770 __ movl(bc, Bytecodes::_fast_faccess_0); | |
771 __ jccb(Assembler::equal, rewrite); | |
772 | |
773 // else rewrite to _fast_aload0 | |
774 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
775 Bytecodes::_aload_0, | |
776 "fix bytecode definition"); | |
777 __ movl(bc, Bytecodes::_fast_aload_0); | |
778 | |
779 // rewrite | |
780 // bc: fast bytecode | |
781 __ bind(rewrite); | |
782 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
783 | |
784 __ bind(done); | |
785 } else { | |
786 aload(0); | |
787 } | |
788 } | |
789 | |
790 void TemplateTable::istore() { | |
791 transition(itos, vtos); | |
792 locals_index(rbx); | |
793 __ movl(iaddress(rbx), rax); | |
794 __ tag_local(frame::TagValue, rbx); | |
795 } | |
796 | |
797 void TemplateTable::lstore() { | |
798 transition(ltos, vtos); | |
799 locals_index(rbx); | |
800 __ movq(laddress(rbx), rax); | |
801 __ tag_local(frame::TagCategory2, rbx); | |
802 } | |
803 | |
804 void TemplateTable::fstore() { | |
805 transition(ftos, vtos); | |
806 locals_index(rbx); | |
807 __ movflt(faddress(rbx), xmm0); | |
808 __ tag_local(frame::TagValue, rbx); | |
809 } | |
810 | |
811 void TemplateTable::dstore() { | |
812 transition(dtos, vtos); | |
813 locals_index(rbx); | |
814 __ movdbl(daddress(rbx), xmm0); | |
815 __ tag_local(frame::TagCategory2, rbx); | |
816 } | |
817 | |
818 void TemplateTable::astore() { | |
819 transition(vtos, vtos); | |
820 __ pop_ptr(rax, rdx); // will need to pop tag too | |
821 locals_index(rbx); | |
304 | 822 __ movptr(aaddress(rbx), rax); |
0 | 823 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr |
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 __ tag_local(frame::TagValue, rbx); | |
832 } | |
833 | |
834 void TemplateTable::wide_lstore() { | |
835 transition(vtos, vtos); | |
836 __ pop_l(); | |
837 locals_index_wide(rbx); | |
838 __ movq(laddress(rbx), rax); | |
839 __ tag_local(frame::TagCategory2, rbx); | |
840 } | |
841 | |
842 void TemplateTable::wide_fstore() { | |
843 transition(vtos, vtos); | |
844 __ pop_f(); | |
845 locals_index_wide(rbx); | |
846 __ movflt(faddress(rbx), xmm0); | |
847 __ tag_local(frame::TagValue, rbx); | |
848 } | |
849 | |
850 void TemplateTable::wide_dstore() { | |
851 transition(vtos, vtos); | |
852 __ pop_d(); | |
853 locals_index_wide(rbx); | |
854 __ movdbl(daddress(rbx), xmm0); | |
855 __ tag_local(frame::TagCategory2, rbx); | |
856 } | |
857 | |
858 void TemplateTable::wide_astore() { | |
859 transition(vtos, vtos); | |
860 __ pop_ptr(rax, rdx); // will need to pop tag too | |
861 locals_index_wide(rbx); | |
304 | 862 __ movptr(aaddress(rbx), rax); |
0 | 863 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr |
864 } | |
865 | |
866 void TemplateTable::iastore() { | |
867 transition(itos, vtos); | |
868 __ pop_i(rbx); | |
869 __ pop_ptr(rdx); | |
870 // eax: value | |
871 // ebx: index | |
872 // rdx: array | |
873 index_check(rdx, rbx); // prefer index in ebx | |
874 __ movl(Address(rdx, rbx, | |
875 Address::times_4, | |
876 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
877 rax); | |
878 } | |
879 | |
880 void TemplateTable::lastore() { | |
881 transition(ltos, vtos); | |
882 __ pop_i(rbx); | |
883 __ pop_ptr(rdx); | |
884 // rax: value | |
885 // ebx: index | |
886 // rdx: array | |
887 index_check(rdx, rbx); // prefer index in ebx | |
888 __ movq(Address(rdx, rbx, | |
889 Address::times_8, | |
890 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
891 rax); | |
892 } | |
893 | |
894 void TemplateTable::fastore() { | |
895 transition(ftos, vtos); | |
896 __ pop_i(rbx); | |
897 __ pop_ptr(rdx); | |
898 // xmm0: value | |
899 // ebx: index | |
900 // rdx: array | |
901 index_check(rdx, rbx); // prefer index in ebx | |
902 __ movflt(Address(rdx, rbx, | |
903 Address::times_4, | |
904 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
905 xmm0); | |
906 } | |
907 | |
908 void TemplateTable::dastore() { | |
909 transition(dtos, vtos); | |
910 __ pop_i(rbx); | |
911 __ pop_ptr(rdx); | |
912 // xmm0: value | |
913 // ebx: index | |
914 // rdx: array | |
915 index_check(rdx, rbx); // prefer index in ebx | |
916 __ movdbl(Address(rdx, rbx, | |
917 Address::times_8, | |
918 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
919 xmm0); | |
920 } | |
921 | |
922 void TemplateTable::aastore() { | |
923 Label is_null, ok_is_subtype, done; | |
924 transition(vtos, vtos); | |
925 // stack: ..., array, index, value | |
304 | 926 __ movptr(rax, at_tos()); // value |
0 | 927 __ movl(rcx, at_tos_p1()); // index |
304 | 928 __ movptr(rdx, at_tos_p2()); // array |
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929 |
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930 Address element_address(rdx, rcx, |
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931 UseCompressedOops? Address::times_4 : Address::times_8, |
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932 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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933 |
0 | 934 index_check(rdx, rcx); // kills rbx |
935 // do array store check - check for NULL value first | |
304 | 936 __ testptr(rax, rax); |
0 | 937 __ jcc(Assembler::zero, is_null); |
938 | |
939 // Move subklass into rbx | |
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940 __ load_klass(rbx, rax); |
0 | 941 // Move superklass into rax |
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942 __ load_klass(rax, rdx); |
304 | 943 __ movptr(rax, Address(rax, |
944 sizeof(oopDesc) + | |
945 objArrayKlass::element_klass_offset_in_bytes())); | |
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946 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 947 __ lea(rdx, element_address); |
0 | 948 |
949 // Generate subtype check. Blows rcx, rdi | |
950 // Superklass in rax. Subklass in rbx. | |
951 __ gen_subtype_check(rbx, ok_is_subtype); | |
952 | |
953 // Come here on failure | |
954 // object is at TOS | |
955 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
956 | |
957 // Come here on success | |
958 __ bind(ok_is_subtype); | |
342
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959 |
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960 // Get the value we will store |
362 | 961 __ movptr(rax, at_tos()); |
342
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962 // Now store using the appropriate barrier |
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963 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 964 __ jmp(done); |
965 | |
966 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
967 __ bind(is_null); | |
968 __ profile_null_seen(rbx); | |
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969 |
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970 // Store a NULL |
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971 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 972 |
973 // Pop stack arguments | |
974 __ bind(done); | |
304 | 975 __ addptr(rsp, 3 * Interpreter::stackElementSize()); |
0 | 976 } |
977 | |
978 void TemplateTable::bastore() { | |
979 transition(itos, vtos); | |
980 __ pop_i(rbx); | |
981 __ pop_ptr(rdx); | |
982 // eax: value | |
983 // ebx: index | |
984 // rdx: array | |
985 index_check(rdx, rbx); // prefer index in ebx | |
986 __ movb(Address(rdx, rbx, | |
987 Address::times_1, | |
988 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
989 rax); | |
990 } | |
991 | |
992 void TemplateTable::castore() { | |
993 transition(itos, vtos); | |
994 __ pop_i(rbx); | |
995 __ pop_ptr(rdx); | |
996 // eax: value | |
997 // ebx: index | |
998 // rdx: array | |
999 index_check(rdx, rbx); // prefer index in ebx | |
1000 __ movw(Address(rdx, rbx, | |
1001 Address::times_2, | |
1002 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
1003 rax); | |
1004 } | |
1005 | |
1006 void TemplateTable::sastore() { | |
1007 castore(); | |
1008 } | |
1009 | |
1010 void TemplateTable::istore(int n) { | |
1011 transition(itos, vtos); | |
1012 __ movl(iaddress(n), rax); | |
1013 __ tag_local(frame::TagValue, n); | |
1014 } | |
1015 | |
1016 void TemplateTable::lstore(int n) { | |
1017 transition(ltos, vtos); | |
1018 __ movq(laddress(n), rax); | |
1019 __ tag_local(frame::TagCategory2, n); | |
1020 } | |
1021 | |
1022 void TemplateTable::fstore(int n) { | |
1023 transition(ftos, vtos); | |
1024 __ movflt(faddress(n), xmm0); | |
1025 __ tag_local(frame::TagValue, n); | |
1026 } | |
1027 | |
1028 void TemplateTable::dstore(int n) { | |
1029 transition(dtos, vtos); | |
1030 __ movdbl(daddress(n), xmm0); | |
1031 __ tag_local(frame::TagCategory2, n); | |
1032 } | |
1033 | |
1034 void TemplateTable::astore(int n) { | |
1035 transition(vtos, vtos); | |
1036 __ pop_ptr(rax, rdx); | |
304 | 1037 __ movptr(aaddress(n), rax); |
0 | 1038 __ tag_local(rdx, n); |
1039 } | |
1040 | |
1041 void TemplateTable::pop() { | |
1042 transition(vtos, vtos); | |
304 | 1043 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1044 } |
1045 | |
1046 void TemplateTable::pop2() { | |
1047 transition(vtos, vtos); | |
304 | 1048 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1049 } |
1050 | |
1051 void TemplateTable::dup() { | |
1052 transition(vtos, vtos); | |
1053 __ load_ptr_and_tag(0, rax, rdx); | |
1054 __ push_ptr(rax, rdx); | |
1055 // stack: ..., a, a | |
1056 } | |
1057 | |
1058 void TemplateTable::dup_x1() { | |
1059 transition(vtos, vtos); | |
1060 // stack: ..., a, b | |
1061 __ load_ptr_and_tag(0, rax, rdx); // load b | |
1062 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
1063 __ store_ptr_and_tag(1, rax, rdx); // store b | |
1064 __ store_ptr_and_tag(0, rcx, rbx); // store a | |
1065 __ push_ptr(rax, rdx); // push b | |
1066 // stack: ..., b, a, b | |
1067 } | |
1068 | |
1069 void TemplateTable::dup_x2() { | |
1070 transition(vtos, vtos); | |
1071 // stack: ..., a, b, c | |
1072 __ load_ptr_and_tag(0, rax, rdx); // load c | |
1073 __ load_ptr_and_tag(2, rcx, rbx); // load a | |
1074 __ store_ptr_and_tag(2, rax, rdx); // store c in a | |
1075 __ push_ptr(rax, rdx); // push c | |
1076 // stack: ..., c, b, c, c | |
1077 __ load_ptr_and_tag(2, rax, rdx); // load b | |
1078 __ store_ptr_and_tag(2, rcx, rbx); // store a in b | |
1079 // stack: ..., c, a, c, c | |
1080 __ store_ptr_and_tag(1, rax, rdx); // store b in c | |
1081 // stack: ..., c, a, b, c | |
1082 } | |
1083 | |
1084 void TemplateTable::dup2() { | |
1085 transition(vtos, vtos); | |
1086 // stack: ..., a, b | |
1087 __ load_ptr_and_tag(1, rax, rdx); // load a | |
1088 __ push_ptr(rax, rdx); // push a | |
1089 __ load_ptr_and_tag(1, rax, rdx); // load b | |
1090 __ push_ptr(rax, rdx); // push b | |
1091 // stack: ..., a, b, a, b | |
1092 } | |
1093 | |
1094 void TemplateTable::dup2_x1() { | |
1095 transition(vtos, vtos); | |
1096 // stack: ..., a, b, c | |
1097 __ load_ptr_and_tag(0, rcx, rbx); // load c | |
1098 __ load_ptr_and_tag(1, rax, rdx); // load b | |
1099 __ push_ptr(rax, rdx); // push b | |
1100 __ push_ptr(rcx, rbx); // push c | |
1101 // stack: ..., a, b, c, b, c | |
1102 __ store_ptr_and_tag(3, rcx, rbx); // store c in b | |
1103 // stack: ..., a, c, c, b, c | |
1104 __ load_ptr_and_tag(4, rcx, rbx); // load a | |
1105 __ store_ptr_and_tag(2, rcx, rbx); // store a in 2nd c | |
1106 // stack: ..., a, c, a, b, c | |
1107 __ store_ptr_and_tag(4, rax, rdx); // store b in a | |
1108 // stack: ..., b, c, a, b, c | |
1109 } | |
1110 | |
1111 void TemplateTable::dup2_x2() { | |
1112 transition(vtos, vtos); | |
1113 // stack: ..., a, b, c, d | |
1114 __ load_ptr_and_tag(0, rcx, rbx); // load d | |
1115 __ load_ptr_and_tag(1, rax, rdx); // load c | |
1116 __ push_ptr(rax, rdx); // push c | |
1117 __ push_ptr(rcx, rbx); // push d | |
1118 // stack: ..., a, b, c, d, c, d | |
1119 __ load_ptr_and_tag(4, rax, rdx); // load b | |
1120 __ store_ptr_and_tag(2, rax, rdx); // store b in d | |
1121 __ store_ptr_and_tag(4, rcx, rbx); // store d in b | |
1122 // stack: ..., a, d, c, b, c, d | |
1123 __ load_ptr_and_tag(5, rcx, rbx); // load a | |
1124 __ load_ptr_and_tag(3, rax, rdx); // load c | |
1125 __ store_ptr_and_tag(3, rcx, rbx); // store a in c | |
1126 __ store_ptr_and_tag(5, rax, rdx); // store c in a | |
1127 // stack: ..., c, d, a, b, c, d | |
1128 } | |
1129 | |
1130 void TemplateTable::swap() { | |
1131 transition(vtos, vtos); | |
1132 // stack: ..., a, b | |
1133 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
1134 __ load_ptr_and_tag(0, rax, rdx); // load b | |
1135 __ store_ptr_and_tag(0, rcx, rbx); // store a in b | |
1136 __ store_ptr_and_tag(1, rax, rdx); // store b in a | |
1137 // stack: ..., b, a | |
1138 } | |
1139 | |
1140 void TemplateTable::iop2(Operation op) { | |
1141 transition(itos, itos); | |
1142 switch (op) { | |
1143 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1144 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1145 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1146 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1147 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1148 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1149 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1150 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1151 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1152 default : ShouldNotReachHere(); | |
1153 } | |
1154 } | |
1155 | |
1156 void TemplateTable::lop2(Operation op) { | |
1157 transition(ltos, ltos); | |
1158 switch (op) { | |
304 | 1159 case add : __ pop_l(rdx); __ addptr (rax, rdx); break; |
1160 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr (rax, rdx); break; | |
1161 case _and : __ pop_l(rdx); __ andptr (rax, rdx); break; | |
1162 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1163 case _xor : __ pop_l(rdx); __ xorptr (rax, rdx); break; | |
0 | 1164 default : ShouldNotReachHere(); |
1165 } | |
1166 } | |
1167 | |
1168 void TemplateTable::idiv() { | |
1169 transition(itos, itos); | |
1170 __ movl(rcx, rax); | |
1171 __ pop_i(rax); | |
1172 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1173 // they are not equal, one could do a normal division (no correction | |
1174 // needed), which may speed up this implementation for the common case. | |
1175 // (see also JVM spec., p.243 & p.271) | |
1176 __ corrected_idivl(rcx); | |
1177 } | |
1178 | |
1179 void TemplateTable::irem() { | |
1180 transition(itos, itos); | |
1181 __ movl(rcx, rax); | |
1182 __ pop_i(rax); | |
1183 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1184 // they are not equal, one could do a normal division (no correction | |
1185 // needed), which may speed up this implementation for the common case. | |
1186 // (see also JVM spec., p.243 & p.271) | |
1187 __ corrected_idivl(rcx); | |
1188 __ movl(rax, rdx); | |
1189 } | |
1190 | |
1191 void TemplateTable::lmul() { | |
1192 transition(ltos, ltos); | |
1193 __ pop_l(rdx); | |
1194 __ imulq(rax, rdx); | |
1195 } | |
1196 | |
1197 void TemplateTable::ldiv() { | |
1198 transition(ltos, ltos); | |
304 | 1199 __ mov(rcx, rax); |
0 | 1200 __ pop_l(rax); |
1201 // generate explicit div0 check | |
1202 __ testq(rcx, rcx); | |
1203 __ jump_cc(Assembler::zero, | |
1204 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1205 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1206 // they are not equal, one could do a normal division (no correction | |
1207 // needed), which may speed up this implementation for the common case. | |
1208 // (see also JVM spec., p.243 & p.271) | |
1209 __ corrected_idivq(rcx); // kills rbx | |
1210 } | |
1211 | |
1212 void TemplateTable::lrem() { | |
1213 transition(ltos, ltos); | |
304 | 1214 __ mov(rcx, rax); |
0 | 1215 __ pop_l(rax); |
1216 __ testq(rcx, rcx); | |
1217 __ jump_cc(Assembler::zero, | |
1218 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1219 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1220 // they are not equal, one could do a normal division (no correction | |
1221 // needed), which may speed up this implementation for the common case. | |
1222 // (see also JVM spec., p.243 & p.271) | |
1223 __ corrected_idivq(rcx); // kills rbx | |
304 | 1224 __ mov(rax, rdx); |
0 | 1225 } |
1226 | |
1227 void TemplateTable::lshl() { | |
1228 transition(itos, ltos); | |
1229 __ movl(rcx, rax); // get shift count | |
1230 __ pop_l(rax); // get shift value | |
1231 __ shlq(rax); | |
1232 } | |
1233 | |
1234 void TemplateTable::lshr() { | |
1235 transition(itos, ltos); | |
1236 __ movl(rcx, rax); // get shift count | |
1237 __ pop_l(rax); // get shift value | |
1238 __ sarq(rax); | |
1239 } | |
1240 | |
1241 void TemplateTable::lushr() { | |
1242 transition(itos, ltos); | |
1243 __ movl(rcx, rax); // get shift count | |
1244 __ pop_l(rax); // get shift value | |
1245 __ shrq(rax); | |
1246 } | |
1247 | |
1248 void TemplateTable::fop2(Operation op) { | |
1249 transition(ftos, ftos); | |
1250 switch (op) { | |
1251 case add: | |
1252 __ addss(xmm0, at_rsp()); | |
304 | 1253 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1254 break; |
1255 case sub: | |
1256 __ movflt(xmm1, xmm0); | |
1257 __ pop_f(xmm0); | |
1258 __ subss(xmm0, xmm1); | |
1259 break; | |
1260 case mul: | |
1261 __ mulss(xmm0, at_rsp()); | |
304 | 1262 __ addptr(rsp, Interpreter::stackElementSize()); |
0 | 1263 break; |
1264 case div: | |
1265 __ movflt(xmm1, xmm0); | |
1266 __ pop_f(xmm0); | |
1267 __ divss(xmm0, xmm1); | |
1268 break; | |
1269 case rem: | |
1270 __ movflt(xmm1, xmm0); | |
1271 __ pop_f(xmm0); | |
1272 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1273 break; | |
1274 default: | |
1275 ShouldNotReachHere(); | |
1276 break; | |
1277 } | |
1278 } | |
1279 | |
1280 void TemplateTable::dop2(Operation op) { | |
1281 transition(dtos, dtos); | |
1282 switch (op) { | |
1283 case add: | |
1284 __ addsd(xmm0, at_rsp()); | |
304 | 1285 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1286 break; |
1287 case sub: | |
1288 __ movdbl(xmm1, xmm0); | |
1289 __ pop_d(xmm0); | |
1290 __ subsd(xmm0, xmm1); | |
1291 break; | |
1292 case mul: | |
1293 __ mulsd(xmm0, at_rsp()); | |
304 | 1294 __ addptr(rsp, 2 * Interpreter::stackElementSize()); |
0 | 1295 break; |
1296 case div: | |
1297 __ movdbl(xmm1, xmm0); | |
1298 __ pop_d(xmm0); | |
1299 __ divsd(xmm0, xmm1); | |
1300 break; | |
1301 case rem: | |
1302 __ movdbl(xmm1, xmm0); | |
1303 __ pop_d(xmm0); | |
1304 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1305 break; | |
1306 default: | |
1307 ShouldNotReachHere(); | |
1308 break; | |
1309 } | |
1310 } | |
1311 | |
1312 void TemplateTable::ineg() { | |
1313 transition(itos, itos); | |
1314 __ negl(rax); | |
1315 } | |
1316 | |
1317 void TemplateTable::lneg() { | |
1318 transition(ltos, ltos); | |
1319 __ negq(rax); | |
1320 } | |
1321 | |
1322 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1323 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1324 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1325 // of 128-bits operands for SSE instructions. | |
1326 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1327 // Store the value to a 128-bits operand. | |
1328 operand[0] = lo; | |
1329 operand[1] = hi; | |
1330 return operand; | |
1331 } | |
1332 | |
1333 // Buffer for 128-bits masks used by SSE instructions. | |
1334 static jlong float_signflip_pool[2*2]; | |
1335 static jlong double_signflip_pool[2*2]; | |
1336 | |
1337 void TemplateTable::fneg() { | |
1338 transition(ftos, ftos); | |
1339 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1340 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1341 } | |
1342 | |
1343 void TemplateTable::dneg() { | |
1344 transition(dtos, dtos); | |
1345 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1346 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1347 } | |
1348 | |
1349 void TemplateTable::iinc() { | |
1350 transition(vtos, vtos); | |
1351 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1352 locals_index(rbx); | |
1353 __ addl(iaddress(rbx), rdx); | |
1354 } | |
1355 | |
1356 void TemplateTable::wide_iinc() { | |
1357 transition(vtos, vtos); | |
1358 __ movl(rdx, at_bcp(4)); // get constant | |
1359 locals_index_wide(rbx); | |
1360 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1361 __ sarl(rdx, 16); | |
1362 __ addl(iaddress(rbx), rdx); | |
1363 // Note: should probably use only one movl to get both | |
1364 // the index and the constant -> fix this | |
1365 } | |
1366 | |
1367 void TemplateTable::convert() { | |
1368 // Checking | |
1369 #ifdef ASSERT | |
1370 { | |
1371 TosState tos_in = ilgl; | |
1372 TosState tos_out = ilgl; | |
1373 switch (bytecode()) { | |
1374 case Bytecodes::_i2l: // fall through | |
1375 case Bytecodes::_i2f: // fall through | |
1376 case Bytecodes::_i2d: // fall through | |
1377 case Bytecodes::_i2b: // fall through | |
1378 case Bytecodes::_i2c: // fall through | |
1379 case Bytecodes::_i2s: tos_in = itos; break; | |
1380 case Bytecodes::_l2i: // fall through | |
1381 case Bytecodes::_l2f: // fall through | |
1382 case Bytecodes::_l2d: tos_in = ltos; break; | |
1383 case Bytecodes::_f2i: // fall through | |
1384 case Bytecodes::_f2l: // fall through | |
1385 case Bytecodes::_f2d: tos_in = ftos; break; | |
1386 case Bytecodes::_d2i: // fall through | |
1387 case Bytecodes::_d2l: // fall through | |
1388 case Bytecodes::_d2f: tos_in = dtos; break; | |
1389 default : ShouldNotReachHere(); | |
1390 } | |
1391 switch (bytecode()) { | |
1392 case Bytecodes::_l2i: // fall through | |
1393 case Bytecodes::_f2i: // fall through | |
1394 case Bytecodes::_d2i: // fall through | |
1395 case Bytecodes::_i2b: // fall through | |
1396 case Bytecodes::_i2c: // fall through | |
1397 case Bytecodes::_i2s: tos_out = itos; break; | |
1398 case Bytecodes::_i2l: // fall through | |
1399 case Bytecodes::_f2l: // fall through | |
1400 case Bytecodes::_d2l: tos_out = ltos; break; | |
1401 case Bytecodes::_i2f: // fall through | |
1402 case Bytecodes::_l2f: // fall through | |
1403 case Bytecodes::_d2f: tos_out = ftos; break; | |
1404 case Bytecodes::_i2d: // fall through | |
1405 case Bytecodes::_l2d: // fall through | |
1406 case Bytecodes::_f2d: tos_out = dtos; break; | |
1407 default : ShouldNotReachHere(); | |
1408 } | |
1409 transition(tos_in, tos_out); | |
1410 } | |
1411 #endif // ASSERT | |
1412 | |
1413 static const int64_t is_nan = 0x8000000000000000L; | |
1414 | |
1415 // Conversion | |
1416 switch (bytecode()) { | |
1417 case Bytecodes::_i2l: | |
1418 __ movslq(rax, rax); | |
1419 break; | |
1420 case Bytecodes::_i2f: | |
1421 __ cvtsi2ssl(xmm0, rax); | |
1422 break; | |
1423 case Bytecodes::_i2d: | |
1424 __ cvtsi2sdl(xmm0, rax); | |
1425 break; | |
1426 case Bytecodes::_i2b: | |
1427 __ movsbl(rax, rax); | |
1428 break; | |
1429 case Bytecodes::_i2c: | |
1430 __ movzwl(rax, rax); | |
1431 break; | |
1432 case Bytecodes::_i2s: | |
1433 __ movswl(rax, rax); | |
1434 break; | |
1435 case Bytecodes::_l2i: | |
1436 __ movl(rax, rax); | |
1437 break; | |
1438 case Bytecodes::_l2f: | |
1439 __ cvtsi2ssq(xmm0, rax); | |
1440 break; | |
1441 case Bytecodes::_l2d: | |
1442 __ cvtsi2sdq(xmm0, rax); | |
1443 break; | |
1444 case Bytecodes::_f2i: | |
1445 { | |
1446 Label L; | |
1447 __ cvttss2sil(rax, xmm0); | |
1448 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1449 __ jcc(Assembler::notEqual, L); | |
1450 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1451 __ bind(L); | |
1452 } | |
1453 break; | |
1454 case Bytecodes::_f2l: | |
1455 { | |
1456 Label L; | |
1457 __ cvttss2siq(rax, xmm0); | |
1458 // NaN or overflow/underflow? | |
1459 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1460 __ jcc(Assembler::notEqual, L); | |
1461 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1462 __ bind(L); | |
1463 } | |
1464 break; | |
1465 case Bytecodes::_f2d: | |
1466 __ cvtss2sd(xmm0, xmm0); | |
1467 break; | |
1468 case Bytecodes::_d2i: | |
1469 { | |
1470 Label L; | |
1471 __ cvttsd2sil(rax, xmm0); | |
1472 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1473 __ jcc(Assembler::notEqual, L); | |
1474 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1475 __ bind(L); | |
1476 } | |
1477 break; | |
1478 case Bytecodes::_d2l: | |
1479 { | |
1480 Label L; | |
1481 __ cvttsd2siq(rax, xmm0); | |
1482 // NaN or overflow/underflow? | |
1483 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1484 __ jcc(Assembler::notEqual, L); | |
1485 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1486 __ bind(L); | |
1487 } | |
1488 break; | |
1489 case Bytecodes::_d2f: | |
1490 __ cvtsd2ss(xmm0, xmm0); | |
1491 break; | |
1492 default: | |
1493 ShouldNotReachHere(); | |
1494 } | |
1495 } | |
1496 | |
1497 void TemplateTable::lcmp() { | |
1498 transition(ltos, itos); | |
1499 Label done; | |
1500 __ pop_l(rdx); | |
1501 __ cmpq(rdx, rax); | |
1502 __ movl(rax, -1); | |
1503 __ jccb(Assembler::less, done); | |
1504 __ setb(Assembler::notEqual, rax); | |
1505 __ movzbl(rax, rax); | |
1506 __ bind(done); | |
1507 } | |
1508 | |
1509 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1510 Label done; | |
1511 if (is_float) { | |
1512 // XXX get rid of pop here, use ... reg, mem32 | |
1513 __ pop_f(xmm1); | |
1514 __ ucomiss(xmm1, xmm0); | |
1515 } else { | |
1516 // XXX get rid of pop here, use ... reg, mem64 | |
1517 __ pop_d(xmm1); | |
1518 __ ucomisd(xmm1, xmm0); | |
1519 } | |
1520 if (unordered_result < 0) { | |
1521 __ movl(rax, -1); | |
1522 __ jccb(Assembler::parity, done); | |
1523 __ jccb(Assembler::below, done); | |
1524 __ setb(Assembler::notEqual, rdx); | |
1525 __ movzbl(rax, rdx); | |
1526 } else { | |
1527 __ movl(rax, 1); | |
1528 __ jccb(Assembler::parity, done); | |
1529 __ jccb(Assembler::above, done); | |
1530 __ movl(rax, 0); | |
1531 __ jccb(Assembler::equal, done); | |
1532 __ decrementl(rax); | |
1533 } | |
1534 __ bind(done); | |
1535 } | |
1536 | |
1537 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1538 __ get_method(rcx); // rcx holds method | |
1539 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1540 // holds bumped taken count | |
1541 | |
1542 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
1543 InvocationCounter::counter_offset(); | |
1544 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
1545 InvocationCounter::counter_offset(); | |
1546 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1547 | |
1548 // Load up edx with the branch displacement | |
1549 __ movl(rdx, at_bcp(1)); | |
1550 __ bswapl(rdx); | |
1551 | |
1552 if (!is_wide) { | |
1553 __ sarl(rdx, 16); | |
1554 } | |
304 | 1555 __ movl2ptr(rdx, rdx); |
0 | 1556 |
1557 // Handle all the JSR stuff here, then exit. | |
1558 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1559 // normal-branch stuff occurring below. |
0 | 1560 if (is_jsr) { |
1561 // Pre-load the next target bytecode into rbx | |
1562 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1563 | |
1564 // compute return address as bci in rax | |
304 | 1565 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
0 | 1566 in_bytes(constMethodOopDesc::codes_offset()))); |
304 | 1567 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); |
0 | 1568 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1569 __ addptr(r13, rdx); |
0 | 1570 // jsr returns atos that is not an oop |
1571 __ push_i(rax); | |
1572 __ dispatch_only(vtos); | |
1573 return; | |
1574 } | |
1575 | |
1576 // Normal (non-jsr) branch handling | |
1577 | |
1578 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1579 __ addptr(r13, rdx); |
0 | 1580 |
1581 assert(UseLoopCounter || !UseOnStackReplacement, | |
1582 "on-stack-replacement requires loop counters"); | |
1583 Label backedge_counter_overflow; | |
1584 Label profile_method; | |
1585 Label dispatch; | |
1586 if (UseLoopCounter) { | |
1587 // increment backedge counter for backward branches | |
1588 // rax: MDO | |
1589 // ebx: MDO bumped taken-count | |
1590 // rcx: method | |
1591 // rdx: target offset | |
1592 // r13: target bcp | |
1593 // r14: locals pointer | |
1594 __ testl(rdx, rdx); // check if forward or backward branch | |
1595 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1596 | |
1597 // increment counter | |
1598 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1599 __ incrementl(rax, InvocationCounter::count_increment); // increment | |
1600 // counter | |
1601 __ movl(Address(rcx, be_offset), rax); // store counter | |
1602 | |
1603 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1604 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1605 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1606 | |
1607 if (ProfileInterpreter) { | |
1608 // Test to see if we should create a method data oop | |
1609 __ cmp32(rax, | |
1610 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); | |
1611 __ jcc(Assembler::less, dispatch); | |
1612 | |
1613 // if no method data exists, go to profile method | |
1614 __ test_method_data_pointer(rax, profile_method); | |
1615 | |
1616 if (UseOnStackReplacement) { | |
1617 // check for overflow against ebx which is the MDO taken count | |
1618 __ cmp32(rbx, | |
1619 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1620 __ jcc(Assembler::below, dispatch); | |
1621 | |
1622 // When ProfileInterpreter is on, the backedge_count comes | |
1623 // from the methodDataOop, which value does not get reset on | |
1624 // the call to frequency_counter_overflow(). To avoid | |
1625 // excessive calls to the overflow routine while the method is | |
1626 // being compiled, add a second test to make sure the overflow | |
1627 // function is called only once every overflow_frequency. | |
1628 const int overflow_frequency = 1024; | |
1629 __ andl(rbx, overflow_frequency - 1); | |
1630 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1631 | |
1632 } | |
1633 } else { | |
1634 if (UseOnStackReplacement) { | |
1635 // check for overflow against eax, which is the sum of the | |
1636 // counters | |
1637 __ cmp32(rax, | |
1638 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1639 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1640 | |
1641 } | |
1642 } | |
1643 __ bind(dispatch); | |
1644 } | |
1645 | |
1646 // Pre-load the next target bytecode into rbx | |
1647 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1648 | |
1649 // continue with the bytecode @ target | |
1650 // eax: return bci for jsr's, unused otherwise | |
1651 // ebx: target bytecode | |
1652 // r13: target bcp | |
1653 __ dispatch_only(vtos); | |
1654 | |
1655 if (UseLoopCounter) { | |
1656 if (ProfileInterpreter) { | |
1657 // Out-of-line code to allocate method data oop. | |
1658 __ bind(profile_method); | |
1659 __ call_VM(noreg, | |
1660 CAST_FROM_FN_PTR(address, | |
1661 InterpreterRuntime::profile_method), r13); | |
1662 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
304 | 1663 __ movptr(rcx, Address(rbp, method_offset)); |
1664 __ movptr(rcx, Address(rcx, | |
1665 in_bytes(methodOopDesc::method_data_offset()))); | |
1666 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1667 rcx); | |
0 | 1668 __ test_method_data_pointer(rcx, dispatch); |
1669 // offset non-null mdp by MDO::data_offset() + IR::profile_method() | |
304 | 1670 __ addptr(rcx, in_bytes(methodDataOopDesc::data_offset())); |
1671 __ addptr(rcx, rax); | |
1672 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1673 rcx); | |
0 | 1674 __ jmp(dispatch); |
1675 } | |
1676 | |
1677 if (UseOnStackReplacement) { | |
1678 // invocation counter overflow | |
1679 __ bind(backedge_counter_overflow); | |
304 | 1680 __ negptr(rdx); |
1681 __ addptr(rdx, r13); // branch bcp | |
0 | 1682 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1683 __ call_VM(noreg, | |
1684 CAST_FROM_FN_PTR(address, | |
1685 InterpreterRuntime::frequency_counter_overflow), | |
1686 rdx); | |
1687 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1688 | |
1689 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1690 // ebx: target bytecode | |
1691 // rdx: scratch | |
1692 // r14: locals pointer | |
1693 // r13: bcp | |
304 | 1694 __ testptr(rax, rax); // test result |
0 | 1695 __ jcc(Assembler::zero, dispatch); // no osr if null |
1696 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1697 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1698 __ cmpl(rcx, InvalidOSREntryBci); | |
1699 __ jcc(Assembler::equal, dispatch); | |
1700 | |
1701 // We have the address of an on stack replacement routine in eax | |
1702 // We need to prepare to execute the OSR method. First we must | |
1703 // migrate the locals and monitors off of the stack. | |
1704 | |
304 | 1705 __ mov(r13, rax); // save the nmethod |
0 | 1706 |
1707 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1708 | |
1709 // eax is OSR buffer, move it to expected parameter location | |
304 | 1710 __ mov(j_rarg0, rax); |
0 | 1711 |
1712 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1713 // registers change across platforms as we are in the midst of a calling | |
1714 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1715 | |
1716 const Register retaddr = j_rarg2; | |
1717 const Register sender_sp = j_rarg1; | |
1718 | |
1719 // pop the interpreter frame | |
304 | 1720 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1721 __ leave(); // remove frame anchor |
304 | 1722 __ pop(retaddr); // get return address |
1723 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1724 // Ensure compiled code always sees stack at proper alignment |
304 | 1725 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1726 |
1727 // unlike x86 we need no specialized return from compiled code | |
1728 // to the interpreter or the call stub. | |
1729 | |
1730 // push the return address | |
304 | 1731 __ push(retaddr); |
0 | 1732 |
1733 // and begin the OSR nmethod | |
1734 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1735 } | |
1736 } | |
1737 } | |
1738 | |
1739 | |
1740 void TemplateTable::if_0cmp(Condition cc) { | |
1741 transition(itos, vtos); | |
1742 // assume branch is more often taken than not (loops use backward branches) | |
1743 Label not_taken; | |
1744 __ testl(rax, rax); | |
1745 __ jcc(j_not(cc), not_taken); | |
1746 branch(false, false); | |
1747 __ bind(not_taken); | |
1748 __ profile_not_taken_branch(rax); | |
1749 } | |
1750 | |
1751 void TemplateTable::if_icmp(Condition cc) { | |
1752 transition(itos, vtos); | |
1753 // assume branch is more often taken than not (loops use backward branches) | |
1754 Label not_taken; | |
1755 __ pop_i(rdx); | |
1756 __ cmpl(rdx, rax); | |
1757 __ jcc(j_not(cc), not_taken); | |
1758 branch(false, false); | |
1759 __ bind(not_taken); | |
1760 __ profile_not_taken_branch(rax); | |
1761 } | |
1762 | |
1763 void TemplateTable::if_nullcmp(Condition cc) { | |
1764 transition(atos, vtos); | |
1765 // assume branch is more often taken than not (loops use backward branches) | |
1766 Label not_taken; | |
304 | 1767 __ testptr(rax, rax); |
0 | 1768 __ jcc(j_not(cc), not_taken); |
1769 branch(false, false); | |
1770 __ bind(not_taken); | |
1771 __ profile_not_taken_branch(rax); | |
1772 } | |
1773 | |
1774 void TemplateTable::if_acmp(Condition cc) { | |
1775 transition(atos, vtos); | |
1776 // assume branch is more often taken than not (loops use backward branches) | |
1777 Label not_taken; | |
1778 __ pop_ptr(rdx); | |
304 | 1779 __ cmpptr(rdx, rax); |
0 | 1780 __ jcc(j_not(cc), not_taken); |
1781 branch(false, false); | |
1782 __ bind(not_taken); | |
1783 __ profile_not_taken_branch(rax); | |
1784 } | |
1785 | |
1786 void TemplateTable::ret() { | |
1787 transition(vtos, vtos); | |
1788 locals_index(rbx); | |
304 | 1789 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1790 __ profile_ret(rbx, rcx); |
1791 __ get_method(rax); | |
304 | 1792 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1793 __ lea(r13, Address(r13, rbx, Address::times_1, | |
1794 constMethodOopDesc::codes_offset())); | |
0 | 1795 __ dispatch_next(vtos); |
1796 } | |
1797 | |
1798 void TemplateTable::wide_ret() { | |
1799 transition(vtos, vtos); | |
1800 locals_index_wide(rbx); | |
304 | 1801 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1802 __ profile_ret(rbx, rcx); |
1803 __ get_method(rax); | |
304 | 1804 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1805 __ lea(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1806 __ dispatch_next(vtos); |
1807 } | |
1808 | |
1809 void TemplateTable::tableswitch() { | |
1810 Label default_case, continue_execution; | |
1811 transition(itos, vtos); | |
1812 // align r13 | |
304 | 1813 __ lea(rbx, at_bcp(BytesPerInt)); |
1814 __ andptr(rbx, -BytesPerInt); | |
0 | 1815 // load lo & hi |
1816 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1817 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1818 __ bswapl(rcx); | |
1819 __ bswapl(rdx); | |
1820 // check against lo & hi | |
1821 __ cmpl(rax, rcx); | |
1822 __ jcc(Assembler::less, default_case); | |
1823 __ cmpl(rax, rdx); | |
1824 __ jcc(Assembler::greater, default_case); | |
1825 // lookup dispatch offset | |
1826 __ subl(rax, rcx); | |
1827 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1828 __ profile_switch_case(rax, rbx, rcx); | |
1829 // continue execution | |
1830 __ bind(continue_execution); | |
1831 __ bswapl(rdx); | |
304 | 1832 __ movl2ptr(rdx, rdx); |
0 | 1833 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1834 __ addptr(r13, rdx); |
0 | 1835 __ dispatch_only(vtos); |
1836 // handle default | |
1837 __ bind(default_case); | |
1838 __ profile_switch_default(rax); | |
1839 __ movl(rdx, Address(rbx, 0)); | |
1840 __ jmp(continue_execution); | |
1841 } | |
1842 | |
1843 void TemplateTable::lookupswitch() { | |
1844 transition(itos, itos); | |
1845 __ stop("lookupswitch bytecode should have been rewritten"); | |
1846 } | |
1847 | |
1848 void TemplateTable::fast_linearswitch() { | |
1849 transition(itos, vtos); | |
1850 Label loop_entry, loop, found, continue_execution; | |
1851 // bswap rax so we can avoid bswapping the table entries | |
1852 __ bswapl(rax); | |
1853 // align r13 | |
304 | 1854 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1855 // this instruction (change offsets | |
1856 // below) | |
1857 __ andptr(rbx, -BytesPerInt); | |
0 | 1858 // set counter |
1859 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1860 __ bswapl(rcx); | |
1861 __ jmpb(loop_entry); | |
1862 // table search | |
1863 __ bind(loop); | |
1864 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1865 __ jcc(Assembler::equal, found); | |
1866 __ bind(loop_entry); | |
1867 __ decrementl(rcx); | |
1868 __ jcc(Assembler::greaterEqual, loop); | |
1869 // default case | |
1870 __ profile_switch_default(rax); | |
1871 __ movl(rdx, Address(rbx, 0)); | |
1872 __ jmp(continue_execution); | |
1873 // entry found -> get offset | |
1874 __ bind(found); | |
1875 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1876 __ profile_switch_case(rcx, rax, rbx); | |
1877 // continue execution | |
1878 __ bind(continue_execution); | |
1879 __ bswapl(rdx); | |
304 | 1880 __ movl2ptr(rdx, rdx); |
0 | 1881 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1882 __ addptr(r13, rdx); |
0 | 1883 __ dispatch_only(vtos); |
1884 } | |
1885 | |
1886 void TemplateTable::fast_binaryswitch() { | |
1887 transition(itos, vtos); | |
1888 // Implementation using the following core algorithm: | |
1889 // | |
1890 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1891 // // Binary search according to "Methodik des Programmierens" by | |
1892 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1893 // int i = 0; | |
1894 // int j = n; | |
1895 // while (i+1 < j) { | |
1896 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1897 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1898 // // where a stands for the array and assuming that the (inexisting) | |
1899 // // element a[n] is infinitely big. | |
1900 // int h = (i + j) >> 1; | |
1901 // // i < h < j | |
1902 // if (key < array[h].fast_match()) { | |
1903 // j = h; | |
1904 // } else { | |
1905 // i = h; | |
1906 // } | |
1907 // } | |
1908 // // R: a[i] <= key < a[i+1] or Q | |
1909 // // (i.e., if key is within array, i is the correct index) | |
1910 // return i; | |
1911 // } | |
1912 | |
1913 // Register allocation | |
1914 const Register key = rax; // already set (tosca) | |
1915 const Register array = rbx; | |
1916 const Register i = rcx; | |
1917 const Register j = rdx; | |
1918 const Register h = rdi; | |
1919 const Register temp = rsi; | |
1920 | |
1921 // Find array start | |
304 | 1922 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1923 // get rid of this | |
1924 // instruction (change | |
1925 // offsets below) | |
1926 __ andptr(array, -BytesPerInt); | |
0 | 1927 |
1928 // Initialize i & j | |
1929 __ xorl(i, i); // i = 0; | |
1930 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1931 | |
1932 // Convert j into native byteordering | |
1933 __ bswapl(j); | |
1934 | |
1935 // And start | |
1936 Label entry; | |
1937 __ jmp(entry); | |
1938 | |
1939 // binary search loop | |
1940 { | |
1941 Label loop; | |
1942 __ bind(loop); | |
1943 // int h = (i + j) >> 1; | |
1944 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1945 __ sarl(h, 1); // h = (i + j) >> 1; | |
1946 // if (key < array[h].fast_match()) { | |
1947 // j = h; | |
1948 // } else { | |
1949 // i = h; | |
1950 // } | |
1951 // Convert array[h].match to native byte-ordering before compare | |
1952 __ movl(temp, Address(array, h, Address::times_8)); | |
1953 __ bswapl(temp); | |
1954 __ cmpl(key, temp); | |
1955 // j = h if (key < array[h].fast_match()) | |
1956 __ cmovl(Assembler::less, j, h); | |
1957 // i = h if (key >= array[h].fast_match()) | |
1958 __ cmovl(Assembler::greaterEqual, i, h); | |
1959 // while (i+1 < j) | |
1960 __ bind(entry); | |
1961 __ leal(h, Address(i, 1)); // i+1 | |
1962 __ cmpl(h, j); // i+1 < j | |
1963 __ jcc(Assembler::less, loop); | |
1964 } | |
1965 | |
1966 // end of binary search, result index is i (must check again!) | |
1967 Label default_case; | |
1968 // Convert array[i].match to native byte-ordering before compare | |
1969 __ movl(temp, Address(array, i, Address::times_8)); | |
1970 __ bswapl(temp); | |
1971 __ cmpl(key, temp); | |
1972 __ jcc(Assembler::notEqual, default_case); | |
1973 | |
1974 // entry found -> j = offset | |
1975 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
1976 __ profile_switch_case(i, key, array); | |
1977 __ bswapl(j); | |
304 | 1978 __ movl2ptr(j, j); |
0 | 1979 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 1980 __ addptr(r13, j); |
0 | 1981 __ dispatch_only(vtos); |
1982 | |
1983 // default case -> j = default offset | |
1984 __ bind(default_case); | |
1985 __ profile_switch_default(i); | |
1986 __ movl(j, Address(array, -2 * BytesPerInt)); | |
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 | |
1994 | |
1995 void TemplateTable::_return(TosState state) { | |
1996 transition(state, state); | |
1997 assert(_desc->calls_vm(), | |
1998 "inconsistent calls_vm information"); // call in remove_activation | |
1999 | |
2000 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2001 assert(state == vtos, "only valid state"); | |
304 | 2002 __ movptr(c_rarg1, aaddress(0)); |
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2003 __ load_klass(rdi, c_rarg1); |
0 | 2004 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
2005 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
2006 Label skip_register_finalizer; | |
2007 __ jcc(Assembler::zero, skip_register_finalizer); | |
2008 | |
2009 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2010 | |
2011 __ bind(skip_register_finalizer); | |
2012 } | |
2013 | |
2014 __ remove_activation(state, r13); | |
2015 __ jmp(r13); | |
2016 } | |
2017 | |
2018 // ---------------------------------------------------------------------------- | |
2019 // Volatile variables demand their effects be made known to all CPU's | |
2020 // in order. Store buffers on most chips allow reads & writes to | |
2021 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2022 // without some kind of memory barrier (i.e., it's not sufficient that | |
2023 // the interpreter does not reorder volatile references, the hardware | |
2024 // also must not reorder them). | |
2025 // | |
2026 // According to the new Java Memory Model (JMM): | |
2027 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2028 // writes act as aquire & release, so: | |
2029 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2030 // happen after the read float up to before the read. It's OK for | |
2031 // non-volatile memory refs that happen before the volatile read to | |
2032 // float down below it. | |
2033 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2034 // memory refs that happen BEFORE the write float down to after the | |
2035 // write. It's OK for non-volatile memory refs that happen after the | |
2036 // volatile write to float up before it. | |
2037 // | |
2038 // We only put in barriers around volatile refs (they are expensive), | |
2039 // not _between_ memory refs (that would require us to track the | |
2040 // flavor of the previous memory refs). Requirements (2) and (3) | |
2041 // require some barriers before volatile stores and after volatile | |
2042 // loads. These nearly cover requirement (1) but miss the | |
2043 // volatile-store-volatile-load case. This final case is placed after | |
2044 // volatile-stores although it could just as well go before | |
2045 // volatile-loads. | |
2046 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2047 order_constraint) { | |
2048 // Helper function to insert a is-volatile test and memory barrier | |
2049 if (os::is_MP()) { // Not needed on single CPU | |
2050 __ membar(order_constraint); | |
2051 } | |
2052 } | |
2053 | |
1108 | 2054 void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Register index) { |
0 | 2055 assert(byte_no == 1 || byte_no == 2, "byte_no out of range"); |
1108 | 2056 bool is_invokedynamic = (bytecode() == Bytecodes::_invokedynamic); |
0 | 2057 |
2058 const Register temp = rbx; | |
2059 assert_different_registers(Rcache, index, temp); | |
2060 | |
2061 const int shift_count = (1 + byte_no) * BitsPerByte; | |
2062 Label resolved; | |
1108 | 2063 __ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic); |
2064 if (is_invokedynamic) { | |
2065 // we are resolved if the f1 field contains a non-null CallSite object | |
2066 __ cmpptr(Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()), (int32_t) NULL_WORD); | |
2067 __ jcc(Assembler::notEqual, resolved); | |
2068 } else { | |
2069 __ movl(temp, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); | |
2070 __ shrl(temp, shift_count); | |
2071 // have we resolved this bytecode? | |
2072 __ andl(temp, 0xFF); | |
2073 __ cmpl(temp, (int) bytecode()); | |
2074 __ jcc(Assembler::equal, resolved); | |
2075 } | |
0 | 2076 |
2077 // resolve first time through | |
2078 address entry; | |
2079 switch (bytecode()) { | |
2080 case Bytecodes::_getstatic: | |
2081 case Bytecodes::_putstatic: | |
2082 case Bytecodes::_getfield: | |
2083 case Bytecodes::_putfield: | |
2084 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2085 break; | |
2086 case Bytecodes::_invokevirtual: | |
2087 case Bytecodes::_invokespecial: | |
2088 case Bytecodes::_invokestatic: | |
2089 case Bytecodes::_invokeinterface: | |
2090 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2091 break; | |
1108 | 2092 case Bytecodes::_invokedynamic: |
2093 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); | |
2094 break; | |
0 | 2095 default: |
2096 ShouldNotReachHere(); | |
2097 break; | |
2098 } | |
2099 __ movl(temp, (int) bytecode()); | |
2100 __ call_VM(noreg, entry, temp); | |
2101 | |
2102 // Update registers with resolved info | |
1108 | 2103 __ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic); |
0 | 2104 __ bind(resolved); |
2105 } | |
2106 | |
2107 // The Rcache and index registers must be set before call | |
2108 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2109 Register cache, | |
2110 Register index, | |
2111 Register off, | |
2112 Register flags, | |
2113 bool is_static = false) { | |
2114 assert_different_registers(cache, index, flags, off); | |
2115 | |
2116 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2117 // Field offset | |
304 | 2118 __ movptr(off, Address(cache, index, Address::times_8, |
2119 in_bytes(cp_base_offset + | |
2120 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2121 // Flags |
2122 __ movl(flags, Address(cache, index, Address::times_8, | |
2123 in_bytes(cp_base_offset + | |
2124 ConstantPoolCacheEntry::flags_offset()))); | |
2125 | |
2126 // klass overwrite register | |
2127 if (is_static) { | |
304 | 2128 __ movptr(obj, Address(cache, index, Address::times_8, |
2129 in_bytes(cp_base_offset + | |
2130 ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2131 } |
2132 } | |
2133 | |
2134 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2135 Register method, | |
2136 Register itable_index, | |
2137 Register flags, | |
2138 bool is_invokevirtual, | |
2139 bool is_invokevfinal /*unused*/) { | |
2140 // setup registers | |
2141 const Register cache = rcx; | |
2142 const Register index = rdx; | |
2143 assert_different_registers(method, flags); | |
2144 assert_different_registers(method, cache, index); | |
2145 assert_different_registers(itable_index, flags); | |
2146 assert_different_registers(itable_index, cache, index); | |
2147 // determine constant pool cache field offsets | |
2148 const int method_offset = in_bytes( | |
2149 constantPoolCacheOopDesc::base_offset() + | |
2150 (is_invokevirtual | |
2151 ? ConstantPoolCacheEntry::f2_offset() | |
2152 : ConstantPoolCacheEntry::f1_offset())); | |
2153 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2154 ConstantPoolCacheEntry::flags_offset()); | |
2155 // access constant pool cache fields | |
2156 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2157 ConstantPoolCacheEntry::f2_offset()); | |
2158 | |
2159 resolve_cache_and_index(byte_no, cache, index); | |
2160 | |
2161 assert(wordSize == 8, "adjust code below"); | |
304 | 2162 __ movptr(method, Address(cache, index, Address::times_8, method_offset)); |
0 | 2163 if (itable_index != noreg) { |
304 | 2164 __ movptr(itable_index, |
0 | 2165 Address(cache, index, Address::times_8, index_offset)); |
2166 } | |
2167 __ movl(flags , Address(cache, index, Address::times_8, flags_offset)); | |
2168 } | |
2169 | |
2170 | |
2171 // The registers cache and index expected to be set before call. | |
2172 // Correct values of the cache and index registers are preserved. | |
2173 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2174 bool is_static, bool has_tos) { | |
2175 // do the JVMTI work here to avoid disturbing the register state below | |
2176 // We use c_rarg registers here because we want to use the register used in | |
2177 // the call to the VM | |
2178 if (JvmtiExport::can_post_field_access()) { | |
2179 // Check to see if a field access watch has been set before we | |
2180 // take the time to call into the VM. | |
2181 Label L1; | |
2182 assert_different_registers(cache, index, rax); | |
2183 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2184 __ testl(rax, rax); | |
2185 __ jcc(Assembler::zero, L1); | |
2186 | |
2187 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2188 | |
2189 // cache entry pointer | |
304 | 2190 __ addptr(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2191 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2192 __ addptr(c_rarg2, c_rarg3); |
0 | 2193 if (is_static) { |
2194 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2195 } else { | |
304 | 2196 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2197 __ verify_oop(c_rarg1); |
2198 } | |
2199 // c_rarg1: object pointer or NULL | |
2200 // c_rarg2: cache entry pointer | |
2201 // c_rarg3: jvalue object on the stack | |
2202 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2203 InterpreterRuntime::post_field_access), | |
2204 c_rarg1, c_rarg2, c_rarg3); | |
2205 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2206 __ bind(L1); | |
2207 } | |
2208 } | |
2209 | |
2210 void TemplateTable::pop_and_check_object(Register r) { | |
2211 __ pop_ptr(r); | |
2212 __ null_check(r); // for field access must check obj. | |
2213 __ verify_oop(r); | |
2214 } | |
2215 | |
2216 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2217 transition(vtos, vtos); | |
2218 | |
2219 const Register cache = rcx; | |
2220 const Register index = rdx; | |
2221 const Register obj = c_rarg3; | |
2222 const Register off = rbx; | |
2223 const Register flags = rax; | |
2224 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2225 | |
2226 resolve_cache_and_index(byte_no, cache, index); | |
2227 jvmti_post_field_access(cache, index, is_static, false); | |
2228 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2229 | |
2230 if (!is_static) { | |
2231 // obj is on the stack | |
2232 pop_and_check_object(obj); | |
2233 } | |
2234 | |
2235 const Address field(obj, off, Address::times_1); | |
2236 | |
2237 Label Done, notByte, notInt, notShort, notChar, | |
2238 notLong, notFloat, notObj, notDouble; | |
2239 | |
2240 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2241 assert(btos == 0, "change code, btos != 0"); | |
2242 | |
2243 __ andl(flags, 0x0F); | |
2244 __ jcc(Assembler::notZero, notByte); | |
2245 // btos | |
2246 __ load_signed_byte(rax, field); | |
2247 __ push(btos); | |
2248 // Rewrite bytecode to be faster | |
2249 if (!is_static) { | |
2250 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2251 } | |
2252 __ jmp(Done); | |
2253 | |
2254 __ bind(notByte); | |
2255 __ cmpl(flags, atos); | |
2256 __ jcc(Assembler::notEqual, notObj); | |
2257 // atos | |
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2258 __ load_heap_oop(rax, field); |
0 | 2259 __ push(atos); |
2260 if (!is_static) { | |
2261 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2262 } | |
2263 __ jmp(Done); | |
2264 | |
2265 __ bind(notObj); | |
2266 __ cmpl(flags, itos); | |
2267 __ jcc(Assembler::notEqual, notInt); | |
2268 // itos | |
2269 __ movl(rax, field); | |
2270 __ push(itos); | |
2271 // Rewrite bytecode to be faster | |
2272 if (!is_static) { | |
2273 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2274 } | |
2275 __ jmp(Done); | |
2276 | |
2277 __ bind(notInt); | |
2278 __ cmpl(flags, ctos); | |
2279 __ jcc(Assembler::notEqual, notChar); | |
2280 // ctos | |
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2281 __ load_unsigned_short(rax, field); |
0 | 2282 __ push(ctos); |
2283 // Rewrite bytecode to be faster | |
2284 if (!is_static) { | |
2285 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2286 } | |
2287 __ jmp(Done); | |
2288 | |
2289 __ bind(notChar); | |
2290 __ cmpl(flags, stos); | |
2291 __ jcc(Assembler::notEqual, notShort); | |
2292 // stos | |
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2293 __ load_signed_short(rax, field); |
0 | 2294 __ push(stos); |
2295 // Rewrite bytecode to be faster | |
2296 if (!is_static) { | |
2297 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2298 } | |
2299 __ jmp(Done); | |
2300 | |
2301 __ bind(notShort); | |
2302 __ cmpl(flags, ltos); | |
2303 __ jcc(Assembler::notEqual, notLong); | |
2304 // ltos | |
2305 __ movq(rax, field); | |
2306 __ push(ltos); | |
2307 // Rewrite bytecode to be faster | |
2308 if (!is_static) { | |
2309 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2310 } | |
2311 __ jmp(Done); | |
2312 | |
2313 __ bind(notLong); | |
2314 __ cmpl(flags, ftos); | |
2315 __ jcc(Assembler::notEqual, notFloat); | |
2316 // ftos | |
2317 __ movflt(xmm0, field); | |
2318 __ push(ftos); | |
2319 // Rewrite bytecode to be faster | |
2320 if (!is_static) { | |
2321 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2322 } | |
2323 __ jmp(Done); | |
2324 | |
2325 __ bind(notFloat); | |
2326 #ifdef ASSERT | |
2327 __ cmpl(flags, dtos); | |
2328 __ jcc(Assembler::notEqual, notDouble); | |
2329 #endif | |
2330 // dtos | |
2331 __ movdbl(xmm0, field); | |
2332 __ push(dtos); | |
2333 // Rewrite bytecode to be faster | |
2334 if (!is_static) { | |
2335 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2336 } | |
2337 #ifdef ASSERT | |
2338 __ jmp(Done); | |
2339 | |
2340 __ bind(notDouble); | |
2341 __ stop("Bad state"); | |
2342 #endif | |
2343 | |
2344 __ bind(Done); | |
2345 // [jk] not needed currently | |
2346 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2347 // Assembler::LoadStore)); | |
2348 } | |
2349 | |
2350 | |
2351 void TemplateTable::getfield(int byte_no) { | |
2352 getfield_or_static(byte_no, false); | |
2353 } | |
2354 | |
2355 void TemplateTable::getstatic(int byte_no) { | |
2356 getfield_or_static(byte_no, true); | |
2357 } | |
2358 | |
2359 // The registers cache and index expected to be set before call. | |
2360 // The function may destroy various registers, just not the cache and index registers. | |
2361 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2362 transition(vtos, vtos); | |
2363 | |
2364 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2365 | |
2366 if (JvmtiExport::can_post_field_modification()) { | |
2367 // Check to see if a field modification watch has been set before | |
2368 // we take the time to call into the VM. | |
2369 Label L1; | |
2370 assert_different_registers(cache, index, rax); | |
2371 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2372 __ testl(rax, rax); | |
2373 __ jcc(Assembler::zero, L1); | |
2374 | |
2375 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2376 | |
2377 if (is_static) { | |
2378 // Life is simple. Null out the object pointer. | |
2379 __ xorl(c_rarg1, c_rarg1); | |
2380 } else { | |
2381 // Life is harder. The stack holds the value on top, followed by | |
2382 // the object. We don't know the size of the value, though; it | |
2383 // could be one or two words depending on its type. As a result, | |
2384 // we must find the type to determine where the object is. | |
2385 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2386 Address::times_8, | |
2387 in_bytes(cp_base_offset + | |
2388 ConstantPoolCacheEntry::flags_offset()))); | |
2389 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
2390 // Make sure we don't need to mask rcx for tosBits after the | |
2391 // above shift | |
2392 ConstantPoolCacheEntry::verify_tosBits(); | |
304 | 2393 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2394 __ cmpl(c_rarg3, ltos); |
304 | 2395 __ cmovptr(Assembler::equal, |
2396 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2397 __ cmpl(c_rarg3, dtos); |
304 | 2398 __ cmovptr(Assembler::equal, |
2399 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2400 } |
2401 // cache entry pointer | |
304 | 2402 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2403 __ shll(rscratch1, LogBytesPerWord); |
304 | 2404 __ addptr(c_rarg2, rscratch1); |
0 | 2405 // object (tos) |
304 | 2406 __ mov(c_rarg3, rsp); |
0 | 2407 // c_rarg1: object pointer set up above (NULL if static) |
2408 // c_rarg2: cache entry pointer | |
2409 // c_rarg3: jvalue object on the stack | |
2410 __ call_VM(noreg, | |
2411 CAST_FROM_FN_PTR(address, | |
2412 InterpreterRuntime::post_field_modification), | |
2413 c_rarg1, c_rarg2, c_rarg3); | |
2414 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2415 __ bind(L1); | |
2416 } | |
2417 } | |
2418 | |
2419 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2420 transition(vtos, vtos); | |
2421 | |
2422 const Register cache = rcx; | |
2423 const Register index = rdx; | |
2424 const Register obj = rcx; | |
2425 const Register off = rbx; | |
2426 const Register flags = rax; | |
2427 const Register bc = c_rarg3; | |
2428 | |
2429 resolve_cache_and_index(byte_no, cache, index); | |
2430 jvmti_post_field_mod(cache, index, is_static); | |
2431 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2432 | |
2433 // [jk] not needed currently | |
2434 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2435 // Assembler::StoreStore)); | |
2436 | |
2437 Label notVolatile, Done; | |
2438 __ movl(rdx, flags); | |
2439 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2440 __ andl(rdx, 0x1); | |
2441 | |
2442 // field address | |
2443 const Address field(obj, off, Address::times_1); | |
2444 | |
2445 Label notByte, notInt, notShort, notChar, | |
2446 notLong, notFloat, notObj, notDouble; | |
2447 | |
2448 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2449 | |
2450 assert(btos == 0, "change code, btos != 0"); | |
2451 __ andl(flags, 0x0f); | |
2452 __ jcc(Assembler::notZero, notByte); | |
2453 // btos | |
2454 __ pop(btos); | |
2455 if (!is_static) pop_and_check_object(obj); | |
2456 __ movb(field, rax); | |
2457 if (!is_static) { | |
2458 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx); | |
2459 } | |
2460 __ jmp(Done); | |
2461 | |
2462 __ bind(notByte); | |
2463 __ cmpl(flags, atos); | |
2464 __ jcc(Assembler::notEqual, notObj); | |
2465 // atos | |
2466 __ pop(atos); | |
2467 if (!is_static) pop_and_check_object(obj); | |
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2468 |
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2469 // Store into the field |
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2470 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2471 |
0 | 2472 if (!is_static) { |
2473 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx); | |
2474 } | |
2475 __ jmp(Done); | |
2476 | |
2477 __ bind(notObj); | |
2478 __ cmpl(flags, itos); | |
2479 __ jcc(Assembler::notEqual, notInt); | |
2480 // itos | |
2481 __ pop(itos); | |
2482 if (!is_static) pop_and_check_object(obj); | |
2483 __ movl(field, rax); | |
2484 if (!is_static) { | |
2485 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx); | |
2486 } | |
2487 __ jmp(Done); | |
2488 | |
2489 __ bind(notInt); | |
2490 __ cmpl(flags, ctos); | |
2491 __ jcc(Assembler::notEqual, notChar); | |
2492 // ctos | |
2493 __ pop(ctos); | |
2494 if (!is_static) pop_and_check_object(obj); | |
2495 __ movw(field, rax); | |
2496 if (!is_static) { | |
2497 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx); | |
2498 } | |
2499 __ jmp(Done); | |
2500 | |
2501 __ bind(notChar); | |
2502 __ cmpl(flags, stos); | |
2503 __ jcc(Assembler::notEqual, notShort); | |
2504 // stos | |
2505 __ pop(stos); | |
2506 if (!is_static) pop_and_check_object(obj); | |
2507 __ movw(field, rax); | |
2508 if (!is_static) { | |
2509 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx); | |
2510 } | |
2511 __ jmp(Done); | |
2512 | |
2513 __ bind(notShort); | |
2514 __ cmpl(flags, ltos); | |
2515 __ jcc(Assembler::notEqual, notLong); | |
2516 // ltos | |
2517 __ pop(ltos); | |
2518 if (!is_static) pop_and_check_object(obj); | |
2519 __ movq(field, rax); | |
2520 if (!is_static) { | |
2521 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx); | |
2522 } | |
2523 __ jmp(Done); | |
2524 | |
2525 __ bind(notLong); | |
2526 __ cmpl(flags, ftos); | |
2527 __ jcc(Assembler::notEqual, notFloat); | |
2528 // ftos | |
2529 __ pop(ftos); | |
2530 if (!is_static) pop_and_check_object(obj); | |
2531 __ movflt(field, xmm0); | |
2532 if (!is_static) { | |
2533 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx); | |
2534 } | |
2535 __ jmp(Done); | |
2536 | |
2537 __ bind(notFloat); | |
2538 #ifdef ASSERT | |
2539 __ cmpl(flags, dtos); | |
2540 __ jcc(Assembler::notEqual, notDouble); | |
2541 #endif | |
2542 // dtos | |
2543 __ pop(dtos); | |
2544 if (!is_static) pop_and_check_object(obj); | |
2545 __ movdbl(field, xmm0); | |
2546 if (!is_static) { | |
2547 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx); | |
2548 } | |
2549 | |
2550 #ifdef ASSERT | |
2551 __ jmp(Done); | |
2552 | |
2553 __ bind(notDouble); | |
2554 __ stop("Bad state"); | |
2555 #endif | |
2556 | |
2557 __ bind(Done); | |
2558 // Check for volatile store | |
2559 __ testl(rdx, rdx); | |
2560 __ jcc(Assembler::zero, notVolatile); | |
2561 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2562 Assembler::StoreStore)); | |
2563 | |
2564 __ bind(notVolatile); | |
2565 } | |
2566 | |
2567 void TemplateTable::putfield(int byte_no) { | |
2568 putfield_or_static(byte_no, false); | |
2569 } | |
2570 | |
2571 void TemplateTable::putstatic(int byte_no) { | |
2572 putfield_or_static(byte_no, true); | |
2573 } | |
2574 | |
2575 void TemplateTable::jvmti_post_fast_field_mod() { | |
2576 if (JvmtiExport::can_post_field_modification()) { | |
2577 // Check to see if a field modification watch has been set before | |
2578 // we take the time to call into the VM. | |
2579 Label L2; | |
2580 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2581 __ testl(c_rarg3, c_rarg3); | |
2582 __ jcc(Assembler::zero, L2); | |
2583 __ pop_ptr(rbx); // copy the object pointer from tos | |
2584 __ verify_oop(rbx); | |
2585 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2586 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2587 __ mov(c_rarg3, rsp); | |
0 | 2588 const Address field(c_rarg3, 0); |
2589 | |
2590 switch (bytecode()) { // load values into the jvalue object | |
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2591 case Bytecodes::_fast_aputfield: __ movq(field, rax); break; |
0 | 2592 case Bytecodes::_fast_lputfield: __ movq(field, rax); break; |
2593 case Bytecodes::_fast_iputfield: __ movl(field, rax); break; | |
2594 case Bytecodes::_fast_bputfield: __ movb(field, rax); break; | |
2595 case Bytecodes::_fast_sputfield: // fall through | |
2596 case Bytecodes::_fast_cputfield: __ movw(field, rax); break; | |
2597 case Bytecodes::_fast_fputfield: __ movflt(field, xmm0); break; | |
2598 case Bytecodes::_fast_dputfield: __ movdbl(field, xmm0); break; | |
2599 default: | |
2600 ShouldNotReachHere(); | |
2601 } | |
2602 | |
2603 // Save rax because call_VM() will clobber it, then use it for | |
2604 // JVMTI purposes | |
304 | 2605 __ push(rax); |
0 | 2606 // access constant pool cache entry |
2607 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2608 __ verify_oop(rbx); | |
2609 // rbx: object pointer copied above | |
2610 // c_rarg2: cache entry pointer | |
2611 // c_rarg3: jvalue object on the stack | |
2612 __ call_VM(noreg, | |
2613 CAST_FROM_FN_PTR(address, | |
2614 InterpreterRuntime::post_field_modification), | |
2615 rbx, c_rarg2, c_rarg3); | |
304 | 2616 __ pop(rax); // restore lower value |
2617 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2618 __ bind(L2); |
2619 } | |
2620 } | |
2621 | |
2622 void TemplateTable::fast_storefield(TosState state) { | |
2623 transition(state, vtos); | |
2624 | |
2625 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2626 | |
2627 jvmti_post_fast_field_mod(); | |
2628 | |
2629 // access constant pool cache | |
2630 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2631 | |
2632 // test for volatile with rdx | |
2633 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2634 in_bytes(base + | |
2635 ConstantPoolCacheEntry::flags_offset()))); | |
2636 | |
2637 // replace index with field offset from cache entry | |
304 | 2638 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2639 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2640 |
2641 // [jk] not needed currently | |
2642 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2643 // Assembler::StoreStore)); | |
2644 | |
2645 Label notVolatile; | |
2646 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2647 __ andl(rdx, 0x1); | |
2648 | |
2649 // Get object from stack | |
2650 pop_and_check_object(rcx); | |
2651 | |
2652 // field address | |
2653 const Address field(rcx, rbx, Address::times_1); | |
2654 | |
2655 // access field | |
2656 switch (bytecode()) { | |
2657 case Bytecodes::_fast_aputfield: | |
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2658 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2659 break; |
2660 case Bytecodes::_fast_lputfield: | |
2661 __ movq(field, rax); | |
2662 break; | |
2663 case Bytecodes::_fast_iputfield: | |
2664 __ movl(field, rax); | |
2665 break; | |
2666 case Bytecodes::_fast_bputfield: | |
2667 __ movb(field, rax); | |
2668 break; | |
2669 case Bytecodes::_fast_sputfield: | |
2670 // fall through | |
2671 case Bytecodes::_fast_cputfield: | |
2672 __ movw(field, rax); | |
2673 break; | |
2674 case Bytecodes::_fast_fputfield: | |
2675 __ movflt(field, xmm0); | |
2676 break; | |
2677 case Bytecodes::_fast_dputfield: | |
2678 __ movdbl(field, xmm0); | |
2679 break; | |
2680 default: | |
2681 ShouldNotReachHere(); | |
2682 } | |
2683 | |
2684 // Check for volatile store | |
2685 __ testl(rdx, rdx); | |
2686 __ jcc(Assembler::zero, notVolatile); | |
2687 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2688 Assembler::StoreStore)); | |
2689 __ bind(notVolatile); | |
2690 } | |
2691 | |
2692 | |
2693 void TemplateTable::fast_accessfield(TosState state) { | |
2694 transition(atos, state); | |
2695 | |
2696 // Do the JVMTI work here to avoid disturbing the register state below | |
2697 if (JvmtiExport::can_post_field_access()) { | |
2698 // Check to see if a field access watch has been set before we | |
2699 // take the time to call into the VM. | |
2700 Label L1; | |
2701 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2702 __ testl(rcx, rcx); | |
2703 __ jcc(Assembler::zero, L1); | |
2704 // access constant pool cache entry | |
2705 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2706 __ verify_oop(rax); |
304 | 2707 __ mov(r12, rax); // save object pointer before call_VM() clobbers it |
2708 __ mov(c_rarg1, rax); | |
0 | 2709 // c_rarg1: object pointer copied above |
2710 // c_rarg2: cache entry pointer | |
2711 __ call_VM(noreg, | |
2712 CAST_FROM_FN_PTR(address, | |
2713 InterpreterRuntime::post_field_access), | |
2714 c_rarg1, c_rarg2); | |
304 | 2715 __ mov(rax, r12); // restore object pointer |
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2716 __ reinit_heapbase(); |
0 | 2717 __ bind(L1); |
2718 } | |
2719 | |
2720 // access constant pool cache | |
2721 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2722 // replace index with field offset from cache entry | |
2723 // [jk] not needed currently | |
2724 // if (os::is_MP()) { | |
2725 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2726 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2727 // ConstantPoolCacheEntry::flags_offset()))); | |
2728 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2729 // __ andl(rdx, 0x1); | |
2730 // } | |
304 | 2731 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2732 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2733 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2734 |
2735 // rax: object | |
2736 __ verify_oop(rax); | |
2737 __ null_check(rax); | |
2738 Address field(rax, rbx, Address::times_1); | |
2739 | |
2740 // access field | |
2741 switch (bytecode()) { | |
2742 case Bytecodes::_fast_agetfield: | |
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2743 __ load_heap_oop(rax, field); |
0 | 2744 __ verify_oop(rax); |
2745 break; | |
2746 case Bytecodes::_fast_lgetfield: | |
2747 __ movq(rax, field); | |
2748 break; | |
2749 case Bytecodes::_fast_igetfield: | |
2750 __ movl(rax, field); | |
2751 break; | |
2752 case Bytecodes::_fast_bgetfield: | |
2753 __ movsbl(rax, field); | |
2754 break; | |
2755 case Bytecodes::_fast_sgetfield: | |
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2756 __ load_signed_short(rax, field); |
0 | 2757 break; |
2758 case Bytecodes::_fast_cgetfield: | |
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2759 __ load_unsigned_short(rax, field); |
0 | 2760 break; |
2761 case Bytecodes::_fast_fgetfield: | |
2762 __ movflt(xmm0, field); | |
2763 break; | |
2764 case Bytecodes::_fast_dgetfield: | |
2765 __ movdbl(xmm0, field); | |
2766 break; | |
2767 default: | |
2768 ShouldNotReachHere(); | |
2769 } | |
2770 // [jk] not needed currently | |
2771 // if (os::is_MP()) { | |
2772 // Label notVolatile; | |
2773 // __ testl(rdx, rdx); | |
2774 // __ jcc(Assembler::zero, notVolatile); | |
2775 // __ membar(Assembler::LoadLoad); | |
2776 // __ bind(notVolatile); | |
2777 //}; | |
2778 } | |
2779 | |
2780 void TemplateTable::fast_xaccess(TosState state) { | |
2781 transition(vtos, state); | |
2782 | |
2783 // get receiver | |
304 | 2784 __ movptr(rax, aaddress(0)); |
0 | 2785 debug_only(__ verify_local_tag(frame::TagReference, 0)); |
2786 // access constant pool cache | |
2787 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2788 __ movptr(rbx, |
2789 Address(rcx, rdx, Address::times_8, | |
2790 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2791 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2792 // make sure exception is reported in correct bcp range (getfield is |
2793 // next instruction) | |
304 | 2794 __ increment(r13); |
0 | 2795 __ null_check(rax); |
2796 switch (state) { | |
2797 case itos: | |
2798 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2799 break; | |
2800 case atos: | |
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2801 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2802 __ verify_oop(rax); |
2803 break; | |
2804 case ftos: | |
2805 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2806 break; | |
2807 default: | |
2808 ShouldNotReachHere(); | |
2809 } | |
2810 | |
2811 // [jk] not needed currently | |
2812 // if (os::is_MP()) { | |
2813 // Label notVolatile; | |
2814 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
2815 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2816 // ConstantPoolCacheEntry::flags_offset()))); | |
2817 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2818 // __ testl(rdx, 0x1); | |
2819 // __ jcc(Assembler::zero, notVolatile); | |
2820 // __ membar(Assembler::LoadLoad); | |
2821 // __ bind(notVolatile); | |
2822 // } | |
2823 | |
304 | 2824 __ decrement(r13); |
0 | 2825 } |
2826 | |
2827 | |
2828 | |
2829 //----------------------------------------------------------------------------- | |
2830 // Calls | |
2831 | |
2832 void TemplateTable::count_calls(Register method, Register temp) { | |
2833 // implemented elsewhere | |
2834 ShouldNotReachHere(); | |
2835 } | |
2836 | |
1108 | 2837 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2838 // determine flags |
1108 | 2839 Bytecodes::Code code = bytecode(); |
0 | 2840 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
1108 | 2841 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2842 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2843 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
1108 | 2844 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2845 const bool receiver_null_check = is_invokespecial; |
2846 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2847 // setup registers & access constant pool cache | |
2848 const Register recv = rcx; | |
2849 const Register flags = rdx; | |
2850 assert_different_registers(method, index, recv, flags); | |
2851 | |
2852 // save 'interpreter return address' | |
2853 __ save_bcp(); | |
2854 | |
2855 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual); | |
2856 | |
2857 // load receiver if needed (note: no return address pushed yet) | |
2858 if (load_receiver) { | |
2859 __ movl(recv, flags); | |
2860 __ andl(recv, 0xFF); | |
2861 if (TaggedStackInterpreter) __ shll(recv, 1); // index*2 | |
1108 | 2862 Address recv_addr(rsp, recv, Address::times_8, -Interpreter::expr_offset_in_bytes(1)); |
2863 if (is_invokedynamic) { | |
2864 __ lea(recv, recv_addr); | |
2865 } else { | |
2866 __ movptr(recv, recv_addr); | |
2867 __ verify_oop(recv); | |
2868 } | |
0 | 2869 } |
2870 | |
2871 // do null check if needed | |
2872 if (receiver_null_check) { | |
2873 __ null_check(recv); | |
2874 } | |
2875 | |
2876 if (save_flags) { | |
2877 __ movl(r13, flags); | |
2878 } | |
2879 | |
2880 // compute return type | |
2881 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2882 // Make sure we don't need to mask flags for tosBits after the above shift | |
2883 ConstantPoolCacheEntry::verify_tosBits(); | |
2884 // load return address | |
2885 { | |
1108 | 2886 address table_addr; |
2887 if (is_invokeinterface || is_invokedynamic) | |
2888 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); | |
2889 else | |
2890 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); | |
2891 ExternalAddress table(table_addr); | |
2892 __ lea(rscratch1, table); | |
2893 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr)); | |
0 | 2894 } |
2895 | |
2896 // push return address | |
304 | 2897 __ push(flags); |
0 | 2898 |
2899 // Restore flag field from the constant pool cache, and restore esi | |
2900 // for later null checks. r13 is the bytecode pointer | |
2901 if (save_flags) { | |
2902 __ movl(flags, r13); | |
2903 __ restore_bcp(); | |
2904 } | |
2905 } | |
2906 | |
2907 | |
2908 void TemplateTable::invokevirtual_helper(Register index, | |
2909 Register recv, | |
2910 Register flags) { | |
2911 // Uses temporary registers rax, rdx assert_different_registers(index, recv, rax, rdx); | |
2912 | |
2913 // Test for an invoke of a final method | |
2914 Label notFinal; | |
2915 __ movl(rax, flags); | |
2916 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2917 __ jcc(Assembler::zero, notFinal); | |
2918 | |
2919 const Register method = index; // method must be rbx | |
2920 assert(method == rbx, | |
2921 "methodOop must be rbx for interpreter calling convention"); | |
2922 | |
2923 // do the call - the index is actually the method to call | |
2924 __ verify_oop(method); | |
2925 | |
2926 // It's final, need a null check here! | |
2927 __ null_check(recv); | |
2928 | |
2929 // profile this call | |
2930 __ profile_final_call(rax); | |
2931 | |
2932 __ jump_from_interpreted(method, rax); | |
2933 | |
2934 __ bind(notFinal); | |
2935 | |
2936 // get receiver klass | |
2937 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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2938 __ load_klass(rax, recv); |
0 | 2939 |
2940 __ verify_oop(rax); | |
2941 | |
2942 // profile this call | |
2943 __ profile_virtual_call(rax, r14, rdx); | |
2944 | |
2945 // get target methodOop & entry point | |
2946 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2947 assert(vtableEntry::size() * wordSize == 8, | |
2948 "adjust the scaling in the code below"); | |
304 | 2949 __ movptr(method, Address(rax, index, |
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2950 Address::times_8, |
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2951 base + vtableEntry::method_offset_in_bytes())); |
304 | 2952 __ movptr(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
0 | 2953 __ jump_from_interpreted(method, rdx); |
2954 } | |
2955 | |
2956 | |
2957 void TemplateTable::invokevirtual(int byte_no) { | |
2958 transition(vtos, vtos); | |
1108 | 2959 prepare_invoke(rbx, noreg, byte_no); |
0 | 2960 |
2961 // rbx: index | |
2962 // rcx: receiver | |
2963 // rdx: flags | |
2964 | |
2965 invokevirtual_helper(rbx, rcx, rdx); | |
2966 } | |
2967 | |
2968 | |
2969 void TemplateTable::invokespecial(int byte_no) { | |
2970 transition(vtos, vtos); | |
1108 | 2971 prepare_invoke(rbx, noreg, byte_no); |
0 | 2972 // do the call |
2973 __ verify_oop(rbx); | |
2974 __ profile_call(rax); | |
2975 __ jump_from_interpreted(rbx, rax); | |
2976 } | |
2977 | |
2978 | |
2979 void TemplateTable::invokestatic(int byte_no) { | |
2980 transition(vtos, vtos); | |
1108 | 2981 prepare_invoke(rbx, noreg, byte_no); |
0 | 2982 // do the call |
2983 __ verify_oop(rbx); | |
2984 __ profile_call(rax); | |
2985 __ jump_from_interpreted(rbx, rax); | |
2986 } | |
2987 | |
2988 void TemplateTable::fast_invokevfinal(int byte_no) { | |
2989 transition(vtos, vtos); | |
2990 __ stop("fast_invokevfinal not used on amd64"); | |
2991 } | |
2992 | |
2993 void TemplateTable::invokeinterface(int byte_no) { | |
2994 transition(vtos, vtos); | |
1108 | 2995 prepare_invoke(rax, rbx, byte_no); |
0 | 2996 |
2997 // rax: Interface | |
2998 // rbx: index | |
2999 // rcx: receiver | |
3000 // rdx: flags | |
3001 | |
3002 // Special case of invokeinterface called for virtual method of | |
3003 // java.lang.Object. See cpCacheOop.cpp for details. | |
3004 // This code isn't produced by javac, but could be produced by | |
3005 // another compliant java compiler. | |
3006 Label notMethod; | |
3007 __ movl(r14, rdx); | |
3008 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3009 __ jcc(Assembler::zero, notMethod); | |
3010 | |
3011 invokevirtual_helper(rbx, rcx, rdx); | |
3012 __ bind(notMethod); | |
3013 | |
3014 // Get receiver klass into rdx - also a null check | |
3015 __ restore_locals(); // restore r14 | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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0
diff
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|
3016 __ load_klass(rdx, rcx); |
0 | 3017 __ verify_oop(rdx); |
3018 | |
3019 // profile this call | |
3020 __ profile_virtual_call(rdx, r13, r14); | |
3021 | |
623
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6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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|
3022 Label no_such_interface, no_such_method; |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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diff
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|
3023 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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622
diff
changeset
|
3024 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3025 rdx, rax, rbx, |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3026 // outputs: method, scan temp. reg |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3027 rbx, r13, |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3028 no_such_interface); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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diff
changeset
|
3029 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3030 // rbx,: methodOop to call |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3031 // rcx: receiver |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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diff
changeset
|
3032 // Check for abstract method error |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3033 // Note: This should be done more efficiently via a throw_abstract_method_error |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3034 // interpreter entry point and a conditional jump to it in case of a null |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
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|
3035 // method. |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3036 __ testptr(rbx, rbx); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3037 __ jcc(Assembler::zero, no_such_method); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3038 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3039 // do the call |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
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diff
changeset
|
3040 // rcx: receiver |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3041 // rbx,: methodOop |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3042 __ jump_from_interpreted(rbx, rdx); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3043 __ should_not_reach_here(); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3044 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3045 // exception handling code follows... |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3046 // note: must restore interpreter registers to canonical |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3047 // state for exception handling to work correctly! |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3048 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3049 __ bind(no_such_method); |
0 | 3050 // throw exception |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3051 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3052 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3053 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3054 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3055 // the call_VM checks for exception, so we should never return here. |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3056 __ should_not_reach_here(); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3057 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3058 __ bind(no_such_interface); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3059 // throw exception |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3060 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3061 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3062 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3063 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3064 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3065 // the call_VM checks for exception, so we should never return here. | |
3066 __ should_not_reach_here(); | |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3067 return; |
0 | 3068 } |
3069 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3070 void TemplateTable::invokedynamic(int byte_no) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3071 transition(vtos, vtos); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3072 |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3073 if (!EnableInvokeDynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3074 // We should not encounter this bytecode if !EnableInvokeDynamic. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3075 // The verifier will stop it. However, if we get past the verifier, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3076 // this will stop the thread in a reasonable way, without crashing the JVM. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3077 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3078 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3079 // the call_VM checks for exception, so we should never return here. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3080 __ should_not_reach_here(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3081 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3082 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3083 |
1108 | 3084 prepare_invoke(rax, rbx, byte_no); |
3085 | |
3086 // rax: CallSite object (f1) | |
3087 // rbx: unused (f2) | |
3088 // rcx: receiver address | |
3089 // rdx: flags (unused) | |
3090 | |
3091 if (ProfileInterpreter) { | |
3092 Label L; | |
3093 // %%% should make a type profile for any invokedynamic that takes a ref argument | |
3094 // profile this call | |
3095 __ profile_call(r13); | |
3096 } | |
3097 | |
3098 __ movptr(rcx, Address(rax, __ delayed_value(java_dyn_CallSite::target_offset_in_bytes, rcx))); | |
3099 __ null_check(rcx); | |
3100 __ prepare_to_jump_from_interpreted(); | |
3101 __ jump_to_method_handle_entry(rcx, rdx); | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3102 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
623
diff
changeset
|
3103 |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3104 |
0 | 3105 //----------------------------------------------------------------------------- |
3106 // Allocation | |
3107 | |
3108 void TemplateTable::_new() { | |
3109 transition(vtos, atos); | |
3110 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3111 Label slow_case; | |
3112 Label done; | |
3113 Label initialize_header; | |
3114 Label initialize_object; // including clearing the fields | |
3115 Label allocate_shared; | |
3116 | |
3117 __ get_cpool_and_tags(rsi, rax); | |
3118 // get instanceKlass | |
304 | 3119 __ movptr(rsi, Address(rsi, rdx, |
3120 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3121 |
3122 // make sure the class we're about to instantiate has been | |
3123 // resolved. Note: slow_case does a pop of stack, which is why we | |
3124 // loaded class/pushed above | |
3125 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
3126 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
3127 JVM_CONSTANT_Class); | |
3128 __ jcc(Assembler::notEqual, slow_case); | |
3129 | |
3130 // make sure klass is initialized & doesn't have finalizer | |
3131 // make sure klass is fully initialized | |
3132 __ cmpl(Address(rsi, | |
3133 instanceKlass::init_state_offset_in_bytes() + | |
3134 sizeof(oopDesc)), | |
3135 instanceKlass::fully_initialized); | |
3136 __ jcc(Assembler::notEqual, slow_case); | |
3137 | |
3138 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3139 __ movl(rdx, | |
3140 Address(rsi, | |
3141 Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3142 // test to see if it has a finalizer or is malformed in some way | |
3143 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3144 __ jcc(Assembler::notZero, slow_case); | |
3145 | |
3146 // Allocate the instance | |
3147 // 1) Try to allocate in the TLAB | |
3148 // 2) if fail and the object is large allocate in the shared Eden | |
3149 // 3) if the above fails (or is not applicable), go to a slow case | |
3150 // (creates a new TLAB, etc.) | |
3151 | |
3152 const bool allow_shared_alloc = | |
3153 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3154 | |
3155 if (UseTLAB) { | |
304 | 3156 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3157 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3158 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3159 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3160 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3161 if (ZeroTLAB) { |
3162 // the fields have been already cleared | |
3163 __ jmp(initialize_header); | |
3164 } else { | |
3165 // initialize both the header and fields | |
3166 __ jmp(initialize_object); | |
3167 } | |
3168 } | |
3169 | |
3170 // Allocation in the shared Eden, if allowed. | |
3171 // | |
3172 // rdx: instance size in bytes | |
3173 if (allow_shared_alloc) { | |
3174 __ bind(allocate_shared); | |
3175 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
113
diff
changeset
|
3176 ExternalAddress top((address)Universe::heap()->top_addr()); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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113
diff
changeset
|
3177 ExternalAddress end((address)Universe::heap()->end_addr()); |
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6711316: Open source the Garbage-First garbage collector
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|
3178 |
0 | 3179 const Register RtopAddr = rscratch1; |
3180 const Register RendAddr = rscratch2; | |
3181 | |
3182 __ lea(RtopAddr, top); | |
3183 __ lea(RendAddr, end); | |
304 | 3184 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3185 |
3186 // For retries rax gets set by cmpxchgq | |
3187 Label retry; | |
3188 __ bind(retry); | |
304 | 3189 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3190 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3191 __ jcc(Assembler::above, slow_case); |
3192 | |
3193 // Compare rax with the top addr, and if still equal, store the new | |
3194 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3195 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3196 // | |
3197 // rax: object begin | |
3198 // rbx: object end | |
3199 // rdx: instance size in bytes | |
3200 if (os::is_MP()) { | |
3201 __ lock(); | |
3202 } | |
304 | 3203 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3204 |
3205 // if someone beat us on the allocation, try again, otherwise continue | |
3206 __ jcc(Assembler::notEqual, retry); | |
3207 } | |
3208 | |
3209 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3210 // The object is initialized before the header. If the object size is | |
3211 // zero, go directly to the header initialization. | |
3212 __ bind(initialize_object); | |
3213 __ decrementl(rdx, sizeof(oopDesc)); | |
3214 __ jcc(Assembler::zero, initialize_header); | |
3215 | |
3216 // Initialize object fields | |
3217 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3218 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3219 { | |
3220 Label loop; | |
3221 __ bind(loop); | |
3222 __ movq(Address(rax, rdx, Address::times_8, | |
3223 sizeof(oopDesc) - oopSize), | |
3224 rcx); | |
3225 __ decrementl(rdx); | |
3226 __ jcc(Assembler::notZero, loop); | |
3227 } | |
3228 | |
3229 // initialize object header only. | |
3230 __ bind(initialize_header); | |
3231 if (UseBiasedLocking) { | |
304 | 3232 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); |
3233 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); | |
0 | 3234 } else { |
3235 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3236 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3237 } | |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
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113
diff
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3238 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
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|
3239 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
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|
3240 __ store_klass(rax, rsi); // store klass last |
1248
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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1108
diff
changeset
|
3241 |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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1108
diff
changeset
|
3242 { |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3243 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3244 // Trigger dtrace event for fastpath |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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1108
diff
changeset
|
3245 __ push(atos); // save the return value |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3246 __ call_VM_leaf( |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3247 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3248 __ pop(atos); // restore the return value |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
parents:
1108
diff
changeset
|
3249 |
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3250 } |
0 | 3251 __ jmp(done); |
3252 } | |
3253 | |
3254 | |
3255 // slow case | |
3256 __ bind(slow_case); | |
3257 __ get_constant_pool(c_rarg1); | |
3258 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3259 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3260 __ verify_oop(rax); | |
3261 | |
3262 // continue | |
3263 __ bind(done); | |
3264 } | |
3265 | |
3266 void TemplateTable::newarray() { | |
3267 transition(itos, atos); | |
3268 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3269 __ movl(c_rarg2, rax); | |
3270 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3271 c_rarg1, c_rarg2); | |
3272 } | |
3273 | |
3274 void TemplateTable::anewarray() { | |
3275 transition(itos, atos); | |
3276 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3277 __ get_constant_pool(c_rarg1); | |
3278 __ movl(c_rarg3, rax); | |
3279 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3280 c_rarg1, c_rarg2, c_rarg3); | |
3281 } | |
3282 | |
3283 void TemplateTable::arraylength() { | |
3284 transition(atos, itos); | |
3285 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3286 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3287 } | |
3288 | |
3289 void TemplateTable::checkcast() { | |
3290 transition(atos, atos); | |
3291 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3292 __ testptr(rax, rax); // object is in rax |
0 | 3293 __ jcc(Assembler::zero, is_null); |
3294 | |
3295 // Get cpool & tags index | |
3296 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3297 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3298 // See if bytecode has already been quicked | |
3299 __ cmpb(Address(rdx, rbx, | |
3300 Address::times_1, | |
3301 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3302 JVM_CONSTANT_Class); | |
3303 __ jcc(Assembler::equal, quicked); | |
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3304 __ push(atos); // save receiver for result, and for GC |
304 | 3305 __ mov(r12, rcx); // save rcx XXX |
0 | 3306 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3307 __ movq(rcx, r12); // restore rcx XXX |
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3308 __ reinit_heapbase(); |
0 | 3309 __ pop_ptr(rdx); // restore receiver |
3310 __ jmpb(resolved); | |
3311 | |
3312 // Get superklass in rax and subklass in rbx | |
3313 __ bind(quicked); | |
304 | 3314 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3315 __ movptr(rax, Address(rcx, rbx, | |
0 | 3316 Address::times_8, sizeof(constantPoolOopDesc))); |
3317 | |
3318 __ bind(resolved); | |
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3319 __ load_klass(rbx, rdx); |
0 | 3320 |
3321 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3322 // Superklass in rax. Subklass in rbx. | |
3323 __ gen_subtype_check(rbx, ok_is_subtype); | |
3324 | |
3325 // Come here on failure | |
3326 __ push_ptr(rdx); | |
3327 // object is at TOS | |
3328 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3329 | |
3330 // Come here on success | |
3331 __ bind(ok_is_subtype); | |
304 | 3332 __ mov(rax, rdx); // Restore object in rdx |
0 | 3333 |
3334 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3335 if (ProfileInterpreter) { | |
3336 __ jmp(done); | |
3337 __ bind(is_null); | |
3338 __ profile_null_seen(rcx); | |
3339 } else { | |
3340 __ bind(is_null); // same as 'done' | |
3341 } | |
3342 __ bind(done); | |
3343 } | |
3344 | |
3345 void TemplateTable::instanceof() { | |
3346 transition(atos, itos); | |
3347 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3348 __ testptr(rax, rax); |
0 | 3349 __ jcc(Assembler::zero, is_null); |
3350 | |
3351 // Get cpool & tags index | |
3352 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3353 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3354 // See if bytecode has already been quicked | |
3355 __ cmpb(Address(rdx, rbx, | |
3356 Address::times_1, | |
3357 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3358 JVM_CONSTANT_Class); | |
3359 __ jcc(Assembler::equal, quicked); | |
3360 | |
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3361 __ push(atos); // save receiver for result, and for GC |
304 | 3362 __ mov(r12, rcx); // save rcx |
0 | 3363 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3364 __ movq(rcx, r12); // restore rcx |
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3365 __ reinit_heapbase(); |
0 | 3366 __ pop_ptr(rdx); // restore receiver |
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3367 __ load_klass(rdx, rdx); |
0 | 3368 __ jmpb(resolved); |
3369 | |
3370 // Get superklass in rax and subklass in rdx | |
3371 __ bind(quicked); | |
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3372 __ load_klass(rdx, rax); |
304 | 3373 __ movptr(rax, Address(rcx, rbx, |
3374 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3375 |
3376 __ bind(resolved); | |
3377 | |
3378 // Generate subtype check. Blows rcx, rdi | |
3379 // Superklass in rax. Subklass in rdx. | |
3380 __ gen_subtype_check(rdx, ok_is_subtype); | |
3381 | |
3382 // Come here on failure | |
3383 __ xorl(rax, rax); | |
3384 __ jmpb(done); | |
3385 // Come here on success | |
3386 __ bind(ok_is_subtype); | |
3387 __ movl(rax, 1); | |
3388 | |
3389 // Collect counts on whether this test sees NULLs a lot or not. | |
3390 if (ProfileInterpreter) { | |
3391 __ jmp(done); | |
3392 __ bind(is_null); | |
3393 __ profile_null_seen(rcx); | |
3394 } else { | |
3395 __ bind(is_null); // same as 'done' | |
3396 } | |
3397 __ bind(done); | |
3398 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3399 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3400 } | |
3401 | |
3402 //----------------------------------------------------------------------------- | |
3403 // Breakpoints | |
3404 void TemplateTable::_breakpoint() { | |
3405 // Note: We get here even if we are single stepping.. | |
3406 // jbug inists on setting breakpoints at every bytecode | |
3407 // even if we are in single step mode. | |
3408 | |
3409 transition(vtos, vtos); | |
3410 | |
3411 // get the unpatched byte code | |
3412 __ get_method(c_rarg1); | |
3413 __ call_VM(noreg, | |
3414 CAST_FROM_FN_PTR(address, | |
3415 InterpreterRuntime::get_original_bytecode_at), | |
3416 c_rarg1, r13); | |
304 | 3417 __ mov(rbx, rax); |
0 | 3418 |
3419 // post the breakpoint event | |
3420 __ get_method(c_rarg1); | |
3421 __ call_VM(noreg, | |
3422 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3423 c_rarg1, r13); | |
3424 | |
3425 // complete the execution of original bytecode | |
3426 __ dispatch_only_normal(vtos); | |
3427 } | |
3428 | |
3429 //----------------------------------------------------------------------------- | |
3430 // Exceptions | |
3431 | |
3432 void TemplateTable::athrow() { | |
3433 transition(atos, vtos); | |
3434 __ null_check(rax); | |
3435 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3436 } | |
3437 | |
3438 //----------------------------------------------------------------------------- | |
3439 // Synchronization | |
3440 // | |
3441 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3442 // in the assembly code structure as well | |
3443 // | |
3444 // Stack layout: | |
3445 // | |
3446 // [expressions ] <--- rsp = expression stack top | |
3447 // .. | |
3448 // [expressions ] | |
3449 // [monitor entry] <--- monitor block top = expression stack bot | |
3450 // .. | |
3451 // [monitor entry] | |
3452 // [frame data ] <--- monitor block bot | |
3453 // ... | |
3454 // [saved rbp ] <--- rbp | |
3455 void TemplateTable::monitorenter() { | |
3456 transition(atos, vtos); | |
3457 | |
3458 // check for NULL object | |
3459 __ null_check(rax); | |
3460 | |
3461 const Address monitor_block_top( | |
3462 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3463 const Address monitor_block_bot( | |
3464 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3465 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3466 | |
3467 Label allocated; | |
3468 | |
3469 // initialize entry pointer | |
3470 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3471 | |
3472 // find a free slot in the monitor block (result in c_rarg1) | |
3473 { | |
3474 Label entry, loop, exit; | |
304 | 3475 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3476 // starting with top-most entry |
304 | 3477 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3478 // of monitor block |
3479 __ jmpb(entry); | |
3480 | |
3481 __ bind(loop); | |
3482 // check if current entry is used | |
304 | 3483 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3484 // if not used then remember entry in c_rarg1 |
304 | 3485 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3486 // check if current entry is for same object |
304 | 3487 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3488 // if same object then stop searching |
3489 __ jccb(Assembler::equal, exit); | |
3490 // otherwise advance to next entry | |
304 | 3491 __ addptr(c_rarg3, entry_size); |
0 | 3492 __ bind(entry); |
3493 // check if bottom reached | |
304 | 3494 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3495 // if not at bottom then check this entry |
3496 __ jcc(Assembler::notEqual, loop); | |
3497 __ bind(exit); | |
3498 } | |
3499 | |
304 | 3500 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3501 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3502 | |
3503 // allocate one if there's no free slot | |
3504 { | |
3505 Label entry, loop; | |
304 | 3506 // 1. compute new pointers // rsp: old expression stack top |
3507 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3508 __ subptr(rsp, entry_size); // move expression stack top | |
3509 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3510 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3511 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3512 __ jmp(entry); |
3513 // 2. move expression stack contents | |
3514 __ bind(loop); | |
304 | 3515 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3516 // word from old location | |
3517 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3518 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3519 __ bind(entry); |
304 | 3520 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3521 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3522 // copy next word | |
3523 } | |
3524 | |
3525 // call run-time routine | |
3526 // c_rarg1: points to monitor entry | |
3527 __ bind(allocated); | |
3528 | |
3529 // Increment bcp to point to the next bytecode, so exception | |
3530 // handling for async. exceptions work correctly. | |
3531 // The object has already been poped from the stack, so the | |
3532 // expression stack looks correct. | |
304 | 3533 __ increment(r13); |
0 | 3534 |
3535 // store object | |
304 | 3536 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3537 __ lock_object(c_rarg1); |
3538 | |
3539 // check to make sure this monitor doesn't cause stack overflow after locking | |
3540 __ save_bcp(); // in case of exception | |
3541 __ generate_stack_overflow_check(0); | |
3542 | |
3543 // The bcp has already been incremented. Just need to dispatch to | |
3544 // next instruction. | |
3545 __ dispatch_next(vtos); | |
3546 } | |
3547 | |
3548 | |
3549 void TemplateTable::monitorexit() { | |
3550 transition(atos, vtos); | |
3551 | |
3552 // check for NULL object | |
3553 __ null_check(rax); | |
3554 | |
3555 const Address monitor_block_top( | |
3556 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3557 const Address monitor_block_bot( | |
3558 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3559 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3560 | |
3561 Label found; | |
3562 | |
3563 // find matching slot | |
3564 { | |
3565 Label entry, loop; | |
304 | 3566 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3567 // starting with top-most entry |
304 | 3568 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3569 // of monitor block |
3570 __ jmpb(entry); | |
3571 | |
3572 __ bind(loop); | |
3573 // check if current entry is for same object | |
304 | 3574 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3575 // if same object then stop searching |
3576 __ jcc(Assembler::equal, found); | |
3577 // otherwise advance to next entry | |
304 | 3578 __ addptr(c_rarg1, entry_size); |
0 | 3579 __ bind(entry); |
3580 // check if bottom reached | |
304 | 3581 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3582 // if not at bottom then check this entry |
3583 __ jcc(Assembler::notEqual, loop); | |
3584 } | |
3585 | |
3586 // error handling. Unlocking was not block-structured | |
3587 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3588 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3589 __ should_not_reach_here(); | |
3590 | |
3591 // call run-time routine | |
3592 // rsi: points to monitor entry | |
3593 __ bind(found); | |
3594 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3595 __ unlock_object(c_rarg1); | |
3596 __ pop_ptr(rax); // discard object | |
3597 } | |
3598 | |
3599 | |
3600 // Wide instructions | |
3601 void TemplateTable::wide() { | |
3602 transition(vtos, vtos); | |
3603 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3604 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3605 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3606 // Note: the r13 increment step is part of the individual wide | |
3607 // bytecode implementations | |
3608 } | |
3609 | |
3610 | |
3611 // Multi arrays | |
3612 void TemplateTable::multianewarray() { | |
3613 transition(vtos, atos); | |
3614 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3615 // last dim is on top of stack; we want address of first one: | |
3616 // first_addr = last_addr + (ndims - 1) * wordSize | |
3617 if (TaggedStackInterpreter) __ shll(rax, 1); // index*2 | |
304 | 3618 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3619 call_VM(rax, |
3620 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3621 c_rarg1); | |
3622 __ load_unsigned_byte(rbx, at_bcp(3)); | |
3623 if (TaggedStackInterpreter) __ shll(rbx, 1); // index*2 | |
304 | 3624 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3625 } |
304 | 3626 #endif // !CC_INTERP |