Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 2112:55f868e91c3b
7010618: C1: array length should be treated at int on 64bit during array allocation
Summary: Sign-extend the length argument during array allocation
Reviewed-by: never, kvn
author | iveresov |
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date | Thu, 06 Jan 2011 16:03:20 -0800 |
parents | 0fc262af204f |
children | b1a2afa37ec4 dd031b2226de |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "interpreter/interpreterRuntime.hpp" | |
28 #include "interpreter/templateTable.hpp" | |
29 #include "memory/universe.inline.hpp" | |
30 #include "oops/methodDataOop.hpp" | |
31 #include "oops/objArrayKlass.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/methodHandles.hpp" | |
34 #include "runtime/sharedRuntime.hpp" | |
35 #include "runtime/stubRoutines.hpp" | |
36 #include "runtime/synchronizer.hpp" | |
0 | 37 |
304 | 38 #ifndef CC_INTERP |
39 | |
0 | 40 #define __ _masm-> |
41 | |
42 // Platform-dependent initialization | |
43 | |
44 void TemplateTable::pd_initialize() { | |
45 // No amd64 specific initialization | |
46 } | |
47 | |
48 // Address computation: local variables | |
49 | |
50 static inline Address iaddress(int n) { | |
51 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
52 } | |
53 | |
54 static inline Address laddress(int n) { | |
55 return iaddress(n + 1); | |
56 } | |
57 | |
58 static inline Address faddress(int n) { | |
59 return iaddress(n); | |
60 } | |
61 | |
62 static inline Address daddress(int n) { | |
63 return laddress(n); | |
64 } | |
65 | |
66 static inline Address aaddress(int n) { | |
67 return iaddress(n); | |
68 } | |
69 | |
70 static inline Address iaddress(Register r) { | |
1506 | 71 return Address(r14, r, Address::times_8); |
0 | 72 } |
73 | |
74 static inline Address laddress(Register r) { | |
75 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
76 } | |
77 | |
78 static inline Address faddress(Register r) { | |
79 return iaddress(r); | |
80 } | |
81 | |
82 static inline Address daddress(Register r) { | |
83 return laddress(r); | |
84 } | |
85 | |
86 static inline Address aaddress(Register r) { | |
87 return iaddress(r); | |
88 } | |
89 | |
90 static inline Address at_rsp() { | |
91 return Address(rsp, 0); | |
92 } | |
93 | |
94 // At top of Java expression stack which may be different than esp(). It | |
95 // isn't for category 1 objects. | |
96 static inline Address at_tos () { | |
97 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
98 } | |
99 | |
100 static inline Address at_tos_p1() { | |
101 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
102 } | |
103 | |
104 static inline Address at_tos_p2() { | |
105 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
106 } | |
107 | |
108 static inline Address at_tos_p3() { | |
109 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
110 } | |
111 | |
112 // Condition conversion | |
113 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
114 switch (cc) { | |
115 case TemplateTable::equal : return Assembler::notEqual; | |
116 case TemplateTable::not_equal : return Assembler::equal; | |
117 case TemplateTable::less : return Assembler::greaterEqual; | |
118 case TemplateTable::less_equal : return Assembler::greater; | |
119 case TemplateTable::greater : return Assembler::lessEqual; | |
120 case TemplateTable::greater_equal: return Assembler::less; | |
121 } | |
122 ShouldNotReachHere(); | |
123 return Assembler::zero; | |
124 } | |
125 | |
126 | |
127 // Miscelaneous helper routines | |
342
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128 // Store an oop (or NULL) at the address described by obj. |
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129 // If val == noreg this means store a NULL |
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130 |
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131 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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132 Address obj, |
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133 Register val, |
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134 BarrierSet::Name barrier, |
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135 bool precise) { |
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136 assert(val == noreg || val == rax, "parameter is just for looks"); |
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137 switch (barrier) { |
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138 #ifndef SERIALGC |
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139 case BarrierSet::G1SATBCT: |
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140 case BarrierSet::G1SATBCTLogging: |
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141 { |
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142 // flatten object address if needed |
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143 if (obj.index() == noreg && obj.disp() == 0) { |
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144 if (obj.base() != rdx) { |
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145 __ movq(rdx, obj.base()); |
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146 } |
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147 } else { |
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148 __ leaq(rdx, obj); |
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149 } |
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150 __ g1_write_barrier_pre(rdx, r8, rbx, val != noreg); |
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151 if (val == noreg) { |
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152 __ store_heap_oop_null(Address(rdx, 0)); |
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153 } else { |
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154 __ store_heap_oop(Address(rdx, 0), val); |
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155 __ g1_write_barrier_post(rdx, val, r8, rbx); |
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156 } |
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157 |
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158 } |
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159 break; |
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160 #endif // SERIALGC |
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161 case BarrierSet::CardTableModRef: |
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162 case BarrierSet::CardTableExtension: |
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163 { |
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164 if (val == noreg) { |
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165 __ store_heap_oop_null(obj); |
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166 } else { |
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167 __ store_heap_oop(obj, val); |
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168 // flatten object address if needed |
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169 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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170 __ store_check(obj.base()); |
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171 } else { |
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172 __ leaq(rdx, obj); |
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173 __ store_check(rdx); |
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174 } |
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175 } |
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176 } |
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177 break; |
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178 case BarrierSet::ModRef: |
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179 case BarrierSet::Other: |
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180 if (val == noreg) { |
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181 __ store_heap_oop_null(obj); |
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182 } else { |
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183 __ store_heap_oop(obj, val); |
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184 } |
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185 break; |
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186 default : |
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187 ShouldNotReachHere(); |
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188 |
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189 } |
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190 } |
0 | 191 |
192 Address TemplateTable::at_bcp(int offset) { | |
193 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
194 return Address(r13, offset); | |
195 } | |
196 | |
197 void TemplateTable::patch_bytecode(Bytecodes::Code bytecode, Register bc, | |
198 Register scratch, | |
199 bool load_bc_into_scratch/*=true*/) { | |
200 if (!RewriteBytecodes) { | |
201 return; | |
202 } | |
203 // the pair bytecodes have already done the load. | |
204 if (load_bc_into_scratch) { | |
205 __ movl(bc, bytecode); | |
206 } | |
207 Label patch_done; | |
208 if (JvmtiExport::can_post_breakpoint()) { | |
209 Label fast_patch; | |
210 // if a breakpoint is present we can't rewrite the stream directly | |
211 __ movzbl(scratch, at_bcp(0)); | |
212 __ cmpl(scratch, Bytecodes::_breakpoint); | |
213 __ jcc(Assembler::notEqual, fast_patch); | |
214 __ get_method(scratch); | |
215 // Let breakpoint table handling rewrite to quicker bytecode | |
1108 | 216 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), scratch, r13, bc); |
0 | 217 #ifndef ASSERT |
218 __ jmpb(patch_done); | |
1108 | 219 #else |
220 __ jmp(patch_done); | |
221 #endif | |
0 | 222 __ bind(fast_patch); |
223 } | |
1108 | 224 #ifdef ASSERT |
0 | 225 Label okay; |
226 __ load_unsigned_byte(scratch, at_bcp(0)); | |
227 __ cmpl(scratch, (int) Bytecodes::java_code(bytecode)); | |
228 __ jcc(Assembler::equal, okay); | |
229 __ cmpl(scratch, bc); | |
230 __ jcc(Assembler::equal, okay); | |
231 __ stop("patching the wrong bytecode"); | |
232 __ bind(okay); | |
233 #endif | |
234 // patch bytecode | |
235 __ movb(at_bcp(0), bc); | |
236 __ bind(patch_done); | |
237 } | |
238 | |
239 | |
240 // Individual instructions | |
241 | |
242 void TemplateTable::nop() { | |
243 transition(vtos, vtos); | |
244 // nothing to do | |
245 } | |
246 | |
247 void TemplateTable::shouldnotreachhere() { | |
248 transition(vtos, vtos); | |
249 __ stop("shouldnotreachhere bytecode"); | |
250 } | |
251 | |
252 void TemplateTable::aconst_null() { | |
253 transition(vtos, atos); | |
254 __ xorl(rax, rax); | |
255 } | |
256 | |
257 void TemplateTable::iconst(int value) { | |
258 transition(vtos, itos); | |
259 if (value == 0) { | |
260 __ xorl(rax, rax); | |
261 } else { | |
262 __ movl(rax, value); | |
263 } | |
264 } | |
265 | |
266 void TemplateTable::lconst(int value) { | |
267 transition(vtos, ltos); | |
268 if (value == 0) { | |
269 __ xorl(rax, rax); | |
270 } else { | |
271 __ movl(rax, value); | |
272 } | |
273 } | |
274 | |
275 void TemplateTable::fconst(int value) { | |
276 transition(vtos, ftos); | |
277 static float one = 1.0f, two = 2.0f; | |
278 switch (value) { | |
279 case 0: | |
280 __ xorps(xmm0, xmm0); | |
281 break; | |
282 case 1: | |
283 __ movflt(xmm0, ExternalAddress((address) &one)); | |
284 break; | |
285 case 2: | |
286 __ movflt(xmm0, ExternalAddress((address) &two)); | |
287 break; | |
288 default: | |
289 ShouldNotReachHere(); | |
290 break; | |
291 } | |
292 } | |
293 | |
294 void TemplateTable::dconst(int value) { | |
295 transition(vtos, dtos); | |
296 static double one = 1.0; | |
297 switch (value) { | |
298 case 0: | |
299 __ xorpd(xmm0, xmm0); | |
300 break; | |
301 case 1: | |
302 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
303 break; | |
304 default: | |
305 ShouldNotReachHere(); | |
306 break; | |
307 } | |
308 } | |
309 | |
310 void TemplateTable::bipush() { | |
311 transition(vtos, itos); | |
312 __ load_signed_byte(rax, at_bcp(1)); | |
313 } | |
314 | |
315 void TemplateTable::sipush() { | |
316 transition(vtos, itos); | |
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317 __ load_unsigned_short(rax, at_bcp(1)); |
0 | 318 __ bswapl(rax); |
319 __ sarl(rax, 16); | |
320 } | |
321 | |
322 void TemplateTable::ldc(bool wide) { | |
323 transition(vtos, vtos); | |
324 Label call_ldc, notFloat, notClass, Done; | |
325 | |
326 if (wide) { | |
327 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
328 } else { | |
329 __ load_unsigned_byte(rbx, at_bcp(1)); | |
330 } | |
331 | |
332 __ get_cpool_and_tags(rcx, rax); | |
333 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
334 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
335 | |
336 // get type | |
337 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
338 | |
339 // unresolved string - get the resolved string | |
340 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
341 __ jccb(Assembler::equal, call_ldc); | |
342 | |
343 // unresolved class - get the resolved class | |
344 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
345 __ jccb(Assembler::equal, call_ldc); | |
346 | |
347 // unresolved class in error state - call into runtime to throw the error | |
348 // from the first resolution attempt | |
349 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
350 __ jccb(Assembler::equal, call_ldc); | |
351 | |
352 // resolved class - need to call vm to get java mirror of the class | |
353 __ cmpl(rdx, JVM_CONSTANT_Class); | |
354 __ jcc(Assembler::notEqual, notClass); | |
355 | |
356 __ bind(call_ldc); | |
357 __ movl(c_rarg1, wide); | |
358 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
359 __ push_ptr(rax); | |
360 __ verify_oop(rax); | |
361 __ jmp(Done); | |
362 | |
363 __ bind(notClass); | |
364 __ cmpl(rdx, JVM_CONSTANT_Float); | |
365 __ jccb(Assembler::notEqual, notFloat); | |
366 // ftos | |
367 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
368 __ push_f(); | |
369 __ jmp(Done); | |
370 | |
371 __ bind(notFloat); | |
372 #ifdef ASSERT | |
373 { | |
374 Label L; | |
375 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
376 __ jcc(Assembler::equal, L); | |
377 __ cmpl(rdx, JVM_CONSTANT_String); | |
378 __ jcc(Assembler::equal, L); | |
379 __ stop("unexpected tag type in ldc"); | |
380 __ bind(L); | |
381 } | |
382 #endif | |
383 // atos and itos | |
384 Label isOop; | |
385 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
386 __ jcc(Assembler::notEqual, isOop); | |
387 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
388 __ push_i(rax); | |
389 __ jmp(Done); | |
390 | |
391 __ bind(isOop); | |
304 | 392 __ movptr(rax, Address(rcx, rbx, Address::times_8, base_offset)); |
0 | 393 __ push_ptr(rax); |
394 | |
395 if (VerifyOops) { | |
396 __ verify_oop(rax); | |
397 } | |
398 | |
399 __ bind(Done); | |
400 } | |
401 | |
1602 | 402 // Fast path for caching oop constants. |
403 // %%% We should use this to handle Class and String constants also. | |
404 // %%% It will simplify the ldc/primitive path considerably. | |
405 void TemplateTable::fast_aldc(bool wide) { | |
406 transition(vtos, atos); | |
407 | |
408 if (!EnableMethodHandles) { | |
409 // We should not encounter this bytecode if !EnableMethodHandles. | |
410 // The verifier will stop it. However, if we get past the verifier, | |
411 // this will stop the thread in a reasonable way, without crashing the JVM. | |
412 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
413 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
414 // the call_VM checks for exception, so we should never return here. | |
415 __ should_not_reach_here(); | |
416 return; | |
417 } | |
418 | |
419 const Register cache = rcx; | |
420 const Register index = rdx; | |
421 | |
422 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
423 if (VerifyOops) { | |
424 __ verify_oop(rax); | |
425 } | |
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426 |
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427 Label L_done, L_throw_exception; |
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428 const Register con_klass_temp = rcx; // same as cache |
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429 const Register array_klass_temp = rdx; // same as index |
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430 __ movptr(con_klass_temp, Address(rax, oopDesc::klass_offset_in_bytes())); |
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431 __ lea(array_klass_temp, ExternalAddress((address)Universe::systemObjArrayKlassObj_addr())); |
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432 __ cmpptr(con_klass_temp, Address(array_klass_temp, 0)); |
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433 __ jcc(Assembler::notEqual, L_done); |
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434 __ cmpl(Address(rax, arrayOopDesc::length_offset_in_bytes()), 0); |
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435 __ jcc(Assembler::notEqual, L_throw_exception); |
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436 __ xorptr(rax, rax); |
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437 __ jmp(L_done); |
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438 |
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439 // Load the exception from the system-array which wraps it: |
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440 __ bind(L_throw_exception); |
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441 __ movptr(rax, Address(rax, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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442 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
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443 |
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444 __ bind(L_done); |
1602 | 445 } |
446 | |
0 | 447 void TemplateTable::ldc2_w() { |
448 transition(vtos, vtos); | |
449 Label Long, Done; | |
450 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
451 | |
452 __ get_cpool_and_tags(rcx, rax); | |
453 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
454 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
455 | |
456 // get type | |
457 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
458 JVM_CONSTANT_Double); | |
459 __ jccb(Assembler::notEqual, Long); | |
460 // dtos | |
461 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
462 __ push_d(); | |
463 __ jmpb(Done); | |
464 | |
465 __ bind(Long); | |
466 // ltos | |
467 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
468 __ push_l(); | |
469 | |
470 __ bind(Done); | |
471 } | |
472 | |
473 void TemplateTable::locals_index(Register reg, int offset) { | |
474 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 475 __ negptr(reg); |
0 | 476 } |
477 | |
478 void TemplateTable::iload() { | |
479 transition(vtos, itos); | |
480 if (RewriteFrequentPairs) { | |
481 Label rewrite, done; | |
482 const Register bc = c_rarg3; | |
483 assert(rbx != bc, "register damaged"); | |
484 | |
485 // get next byte | |
486 __ load_unsigned_byte(rbx, | |
487 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
488 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
489 // last two iloads in a pair. Comparing against fast_iload means that | |
490 // the next bytecode is neither an iload or a caload, and therefore | |
491 // an iload pair. | |
492 __ cmpl(rbx, Bytecodes::_iload); | |
493 __ jcc(Assembler::equal, done); | |
494 | |
495 __ cmpl(rbx, Bytecodes::_fast_iload); | |
496 __ movl(bc, Bytecodes::_fast_iload2); | |
497 __ jccb(Assembler::equal, rewrite); | |
498 | |
499 // if _caload, rewrite to fast_icaload | |
500 __ cmpl(rbx, Bytecodes::_caload); | |
501 __ movl(bc, Bytecodes::_fast_icaload); | |
502 __ jccb(Assembler::equal, rewrite); | |
503 | |
504 // rewrite so iload doesn't check again. | |
505 __ movl(bc, Bytecodes::_fast_iload); | |
506 | |
507 // rewrite | |
508 // bc: fast bytecode | |
509 __ bind(rewrite); | |
510 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
511 __ bind(done); | |
512 } | |
513 | |
514 // Get the local value into tos | |
515 locals_index(rbx); | |
516 __ movl(rax, iaddress(rbx)); | |
517 } | |
518 | |
519 void TemplateTable::fast_iload2() { | |
520 transition(vtos, itos); | |
521 locals_index(rbx); | |
522 __ movl(rax, iaddress(rbx)); | |
523 __ push(itos); | |
524 locals_index(rbx, 3); | |
525 __ movl(rax, iaddress(rbx)); | |
526 } | |
527 | |
528 void TemplateTable::fast_iload() { | |
529 transition(vtos, itos); | |
530 locals_index(rbx); | |
531 __ movl(rax, iaddress(rbx)); | |
532 } | |
533 | |
534 void TemplateTable::lload() { | |
535 transition(vtos, ltos); | |
536 locals_index(rbx); | |
537 __ movq(rax, laddress(rbx)); | |
538 } | |
539 | |
540 void TemplateTable::fload() { | |
541 transition(vtos, ftos); | |
542 locals_index(rbx); | |
543 __ movflt(xmm0, faddress(rbx)); | |
544 } | |
545 | |
546 void TemplateTable::dload() { | |
547 transition(vtos, dtos); | |
548 locals_index(rbx); | |
549 __ movdbl(xmm0, daddress(rbx)); | |
550 } | |
551 | |
552 void TemplateTable::aload() { | |
553 transition(vtos, atos); | |
554 locals_index(rbx); | |
304 | 555 __ movptr(rax, aaddress(rbx)); |
0 | 556 } |
557 | |
558 void TemplateTable::locals_index_wide(Register reg) { | |
559 __ movl(reg, at_bcp(2)); | |
560 __ bswapl(reg); | |
561 __ shrl(reg, 16); | |
304 | 562 __ negptr(reg); |
0 | 563 } |
564 | |
565 void TemplateTable::wide_iload() { | |
566 transition(vtos, itos); | |
567 locals_index_wide(rbx); | |
568 __ movl(rax, iaddress(rbx)); | |
569 } | |
570 | |
571 void TemplateTable::wide_lload() { | |
572 transition(vtos, ltos); | |
573 locals_index_wide(rbx); | |
574 __ movq(rax, laddress(rbx)); | |
575 } | |
576 | |
577 void TemplateTable::wide_fload() { | |
578 transition(vtos, ftos); | |
579 locals_index_wide(rbx); | |
580 __ movflt(xmm0, faddress(rbx)); | |
581 } | |
582 | |
583 void TemplateTable::wide_dload() { | |
584 transition(vtos, dtos); | |
585 locals_index_wide(rbx); | |
586 __ movdbl(xmm0, daddress(rbx)); | |
587 } | |
588 | |
589 void TemplateTable::wide_aload() { | |
590 transition(vtos, atos); | |
591 locals_index_wide(rbx); | |
304 | 592 __ movptr(rax, aaddress(rbx)); |
0 | 593 } |
594 | |
595 void TemplateTable::index_check(Register array, Register index) { | |
596 // destroys rbx | |
597 // check array | |
598 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
599 // sign extend index for use by indexed load | |
304 | 600 __ movl2ptr(index, index); |
0 | 601 // check index |
602 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
603 if (index != rbx) { | |
604 // ??? convention: move aberrant index into ebx for exception message | |
605 assert(rbx != array, "different registers"); | |
606 __ movl(rbx, index); | |
607 } | |
608 __ jump_cc(Assembler::aboveEqual, | |
609 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
610 } | |
611 | |
612 void TemplateTable::iaload() { | |
613 transition(itos, itos); | |
614 __ pop_ptr(rdx); | |
615 // eax: index | |
616 // rdx: array | |
617 index_check(rdx, rax); // kills rbx | |
618 __ movl(rax, Address(rdx, rax, | |
619 Address::times_4, | |
620 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
621 } | |
622 | |
623 void TemplateTable::laload() { | |
624 transition(itos, ltos); | |
625 __ pop_ptr(rdx); | |
626 // eax: index | |
627 // rdx: array | |
628 index_check(rdx, rax); // kills rbx | |
629 __ movq(rax, Address(rdx, rbx, | |
630 Address::times_8, | |
631 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
632 } | |
633 | |
634 void TemplateTable::faload() { | |
635 transition(itos, ftos); | |
636 __ pop_ptr(rdx); | |
637 // eax: index | |
638 // rdx: array | |
639 index_check(rdx, rax); // kills rbx | |
640 __ movflt(xmm0, Address(rdx, rax, | |
641 Address::times_4, | |
642 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
643 } | |
644 | |
645 void TemplateTable::daload() { | |
646 transition(itos, dtos); | |
647 __ pop_ptr(rdx); | |
648 // eax: index | |
649 // rdx: array | |
650 index_check(rdx, rax); // kills rbx | |
651 __ movdbl(xmm0, Address(rdx, rax, | |
652 Address::times_8, | |
653 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
654 } | |
655 | |
656 void TemplateTable::aaload() { | |
657 transition(itos, atos); | |
658 __ pop_ptr(rdx); | |
659 // eax: index | |
660 // rdx: array | |
661 index_check(rdx, rax); // kills rbx | |
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662 __ load_heap_oop(rax, Address(rdx, rax, |
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663 UseCompressedOops ? Address::times_4 : Address::times_8, |
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664 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 665 } |
666 | |
667 void TemplateTable::baload() { | |
668 transition(itos, itos); | |
669 __ pop_ptr(rdx); | |
670 // eax: index | |
671 // rdx: array | |
672 index_check(rdx, rax); // kills rbx | |
673 __ load_signed_byte(rax, | |
674 Address(rdx, rax, | |
675 Address::times_1, | |
676 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
677 } | |
678 | |
679 void TemplateTable::caload() { | |
680 transition(itos, itos); | |
681 __ pop_ptr(rdx); | |
682 // eax: index | |
683 // rdx: array | |
684 index_check(rdx, rax); // kills rbx | |
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685 __ load_unsigned_short(rax, |
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686 Address(rdx, rax, |
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687 Address::times_2, |
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688 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 689 } |
690 | |
691 // iload followed by caload frequent pair | |
692 void TemplateTable::fast_icaload() { | |
693 transition(vtos, itos); | |
694 // load index out of locals | |
695 locals_index(rbx); | |
696 __ movl(rax, iaddress(rbx)); | |
697 | |
698 // eax: index | |
699 // rdx: array | |
700 __ pop_ptr(rdx); | |
701 index_check(rdx, rax); // kills rbx | |
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702 __ load_unsigned_short(rax, |
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703 Address(rdx, rax, |
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704 Address::times_2, |
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705 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 706 } |
707 | |
708 void TemplateTable::saload() { | |
709 transition(itos, itos); | |
710 __ pop_ptr(rdx); | |
711 // eax: index | |
712 // rdx: array | |
713 index_check(rdx, rax); // kills rbx | |
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714 __ load_signed_short(rax, |
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715 Address(rdx, rax, |
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716 Address::times_2, |
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717 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 718 } |
719 | |
720 void TemplateTable::iload(int n) { | |
721 transition(vtos, itos); | |
722 __ movl(rax, iaddress(n)); | |
723 } | |
724 | |
725 void TemplateTable::lload(int n) { | |
726 transition(vtos, ltos); | |
727 __ movq(rax, laddress(n)); | |
728 } | |
729 | |
730 void TemplateTable::fload(int n) { | |
731 transition(vtos, ftos); | |
732 __ movflt(xmm0, faddress(n)); | |
733 } | |
734 | |
735 void TemplateTable::dload(int n) { | |
736 transition(vtos, dtos); | |
737 __ movdbl(xmm0, daddress(n)); | |
738 } | |
739 | |
740 void TemplateTable::aload(int n) { | |
741 transition(vtos, atos); | |
304 | 742 __ movptr(rax, aaddress(n)); |
0 | 743 } |
744 | |
745 void TemplateTable::aload_0() { | |
746 transition(vtos, atos); | |
747 // According to bytecode histograms, the pairs: | |
748 // | |
749 // _aload_0, _fast_igetfield | |
750 // _aload_0, _fast_agetfield | |
751 // _aload_0, _fast_fgetfield | |
752 // | |
753 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
754 // _aload_0 bytecode checks if the next bytecode is either | |
755 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
756 // rewrites the current bytecode into a pair bytecode; otherwise it | |
757 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
758 // the pair check anymore. | |
759 // | |
760 // Note: If the next bytecode is _getfield, the rewrite must be | |
761 // delayed, otherwise we may miss an opportunity for a pair. | |
762 // | |
763 // Also rewrite frequent pairs | |
764 // aload_0, aload_1 | |
765 // aload_0, iload_1 | |
766 // These bytecodes with a small amount of code are most profitable | |
767 // to rewrite | |
768 if (RewriteFrequentPairs) { | |
769 Label rewrite, done; | |
770 const Register bc = c_rarg3; | |
771 assert(rbx != bc, "register damaged"); | |
772 // get next byte | |
773 __ load_unsigned_byte(rbx, | |
774 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
775 | |
776 // do actual aload_0 | |
777 aload(0); | |
778 | |
779 // if _getfield then wait with rewrite | |
780 __ cmpl(rbx, Bytecodes::_getfield); | |
781 __ jcc(Assembler::equal, done); | |
782 | |
783 // if _igetfield then reqrite to _fast_iaccess_0 | |
784 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
785 Bytecodes::_aload_0, | |
786 "fix bytecode definition"); | |
787 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
788 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
789 __ jccb(Assembler::equal, rewrite); | |
790 | |
791 // if _agetfield then reqrite to _fast_aaccess_0 | |
792 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
793 Bytecodes::_aload_0, | |
794 "fix bytecode definition"); | |
795 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
796 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
797 __ jccb(Assembler::equal, rewrite); | |
798 | |
799 // if _fgetfield then reqrite to _fast_faccess_0 | |
800 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
801 Bytecodes::_aload_0, | |
802 "fix bytecode definition"); | |
803 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
804 __ movl(bc, Bytecodes::_fast_faccess_0); | |
805 __ jccb(Assembler::equal, rewrite); | |
806 | |
807 // else rewrite to _fast_aload0 | |
808 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
809 Bytecodes::_aload_0, | |
810 "fix bytecode definition"); | |
811 __ movl(bc, Bytecodes::_fast_aload_0); | |
812 | |
813 // rewrite | |
814 // bc: fast bytecode | |
815 __ bind(rewrite); | |
816 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
817 | |
818 __ bind(done); | |
819 } else { | |
820 aload(0); | |
821 } | |
822 } | |
823 | |
824 void TemplateTable::istore() { | |
825 transition(itos, vtos); | |
826 locals_index(rbx); | |
827 __ movl(iaddress(rbx), rax); | |
828 } | |
829 | |
830 void TemplateTable::lstore() { | |
831 transition(ltos, vtos); | |
832 locals_index(rbx); | |
833 __ movq(laddress(rbx), rax); | |
834 } | |
835 | |
836 void TemplateTable::fstore() { | |
837 transition(ftos, vtos); | |
838 locals_index(rbx); | |
839 __ movflt(faddress(rbx), xmm0); | |
840 } | |
841 | |
842 void TemplateTable::dstore() { | |
843 transition(dtos, vtos); | |
844 locals_index(rbx); | |
845 __ movdbl(daddress(rbx), xmm0); | |
846 } | |
847 | |
848 void TemplateTable::astore() { | |
849 transition(vtos, vtos); | |
1506 | 850 __ pop_ptr(rax); |
0 | 851 locals_index(rbx); |
304 | 852 __ movptr(aaddress(rbx), rax); |
0 | 853 } |
854 | |
855 void TemplateTable::wide_istore() { | |
856 transition(vtos, vtos); | |
857 __ pop_i(); | |
858 locals_index_wide(rbx); | |
859 __ movl(iaddress(rbx), rax); | |
860 } | |
861 | |
862 void TemplateTable::wide_lstore() { | |
863 transition(vtos, vtos); | |
864 __ pop_l(); | |
865 locals_index_wide(rbx); | |
866 __ movq(laddress(rbx), rax); | |
867 } | |
868 | |
869 void TemplateTable::wide_fstore() { | |
870 transition(vtos, vtos); | |
871 __ pop_f(); | |
872 locals_index_wide(rbx); | |
873 __ movflt(faddress(rbx), xmm0); | |
874 } | |
875 | |
876 void TemplateTable::wide_dstore() { | |
877 transition(vtos, vtos); | |
878 __ pop_d(); | |
879 locals_index_wide(rbx); | |
880 __ movdbl(daddress(rbx), xmm0); | |
881 } | |
882 | |
883 void TemplateTable::wide_astore() { | |
884 transition(vtos, vtos); | |
1506 | 885 __ pop_ptr(rax); |
0 | 886 locals_index_wide(rbx); |
304 | 887 __ movptr(aaddress(rbx), rax); |
0 | 888 } |
889 | |
890 void TemplateTable::iastore() { | |
891 transition(itos, vtos); | |
892 __ pop_i(rbx); | |
893 __ pop_ptr(rdx); | |
894 // eax: value | |
895 // ebx: index | |
896 // rdx: array | |
897 index_check(rdx, rbx); // prefer index in ebx | |
898 __ movl(Address(rdx, rbx, | |
899 Address::times_4, | |
900 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
901 rax); | |
902 } | |
903 | |
904 void TemplateTable::lastore() { | |
905 transition(ltos, vtos); | |
906 __ pop_i(rbx); | |
907 __ pop_ptr(rdx); | |
908 // rax: value | |
909 // ebx: index | |
910 // rdx: array | |
911 index_check(rdx, rbx); // prefer index in ebx | |
912 __ movq(Address(rdx, rbx, | |
913 Address::times_8, | |
914 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
915 rax); | |
916 } | |
917 | |
918 void TemplateTable::fastore() { | |
919 transition(ftos, vtos); | |
920 __ pop_i(rbx); | |
921 __ pop_ptr(rdx); | |
922 // xmm0: value | |
923 // ebx: index | |
924 // rdx: array | |
925 index_check(rdx, rbx); // prefer index in ebx | |
926 __ movflt(Address(rdx, rbx, | |
927 Address::times_4, | |
928 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
929 xmm0); | |
930 } | |
931 | |
932 void TemplateTable::dastore() { | |
933 transition(dtos, vtos); | |
934 __ pop_i(rbx); | |
935 __ pop_ptr(rdx); | |
936 // xmm0: value | |
937 // ebx: index | |
938 // rdx: array | |
939 index_check(rdx, rbx); // prefer index in ebx | |
940 __ movdbl(Address(rdx, rbx, | |
941 Address::times_8, | |
942 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
943 xmm0); | |
944 } | |
945 | |
946 void TemplateTable::aastore() { | |
947 Label is_null, ok_is_subtype, done; | |
948 transition(vtos, vtos); | |
949 // stack: ..., array, index, value | |
304 | 950 __ movptr(rax, at_tos()); // value |
0 | 951 __ movl(rcx, at_tos_p1()); // index |
304 | 952 __ movptr(rdx, at_tos_p2()); // array |
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953 |
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954 Address element_address(rdx, rcx, |
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955 UseCompressedOops? Address::times_4 : Address::times_8, |
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956 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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957 |
0 | 958 index_check(rdx, rcx); // kills rbx |
959 // do array store check - check for NULL value first | |
304 | 960 __ testptr(rax, rax); |
0 | 961 __ jcc(Assembler::zero, is_null); |
962 | |
963 // Move subklass into rbx | |
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964 __ load_klass(rbx, rax); |
0 | 965 // Move superklass into rax |
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966 __ load_klass(rax, rdx); |
304 | 967 __ movptr(rax, Address(rax, |
968 sizeof(oopDesc) + | |
969 objArrayKlass::element_klass_offset_in_bytes())); | |
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970 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 971 __ lea(rdx, element_address); |
0 | 972 |
973 // Generate subtype check. Blows rcx, rdi | |
974 // Superklass in rax. Subklass in rbx. | |
975 __ gen_subtype_check(rbx, ok_is_subtype); | |
976 | |
977 // Come here on failure | |
978 // object is at TOS | |
979 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
980 | |
981 // Come here on success | |
982 __ bind(ok_is_subtype); | |
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983 |
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984 // Get the value we will store |
362 | 985 __ movptr(rax, at_tos()); |
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986 // Now store using the appropriate barrier |
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987 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 988 __ jmp(done); |
989 | |
990 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
991 __ bind(is_null); | |
992 __ profile_null_seen(rbx); | |
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993 |
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994 // Store a NULL |
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995 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 996 |
997 // Pop stack arguments | |
998 __ bind(done); | |
1506 | 999 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 1000 } |
1001 | |
1002 void TemplateTable::bastore() { | |
1003 transition(itos, vtos); | |
1004 __ pop_i(rbx); | |
1005 __ pop_ptr(rdx); | |
1006 // eax: value | |
1007 // ebx: index | |
1008 // rdx: array | |
1009 index_check(rdx, rbx); // prefer index in ebx | |
1010 __ movb(Address(rdx, rbx, | |
1011 Address::times_1, | |
1012 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
1013 rax); | |
1014 } | |
1015 | |
1016 void TemplateTable::castore() { | |
1017 transition(itos, vtos); | |
1018 __ pop_i(rbx); | |
1019 __ pop_ptr(rdx); | |
1020 // eax: value | |
1021 // ebx: index | |
1022 // rdx: array | |
1023 index_check(rdx, rbx); // prefer index in ebx | |
1024 __ movw(Address(rdx, rbx, | |
1025 Address::times_2, | |
1026 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
1027 rax); | |
1028 } | |
1029 | |
1030 void TemplateTable::sastore() { | |
1031 castore(); | |
1032 } | |
1033 | |
1034 void TemplateTable::istore(int n) { | |
1035 transition(itos, vtos); | |
1036 __ movl(iaddress(n), rax); | |
1037 } | |
1038 | |
1039 void TemplateTable::lstore(int n) { | |
1040 transition(ltos, vtos); | |
1041 __ movq(laddress(n), rax); | |
1042 } | |
1043 | |
1044 void TemplateTable::fstore(int n) { | |
1045 transition(ftos, vtos); | |
1046 __ movflt(faddress(n), xmm0); | |
1047 } | |
1048 | |
1049 void TemplateTable::dstore(int n) { | |
1050 transition(dtos, vtos); | |
1051 __ movdbl(daddress(n), xmm0); | |
1052 } | |
1053 | |
1054 void TemplateTable::astore(int n) { | |
1055 transition(vtos, vtos); | |
1506 | 1056 __ pop_ptr(rax); |
304 | 1057 __ movptr(aaddress(n), rax); |
0 | 1058 } |
1059 | |
1060 void TemplateTable::pop() { | |
1061 transition(vtos, vtos); | |
1506 | 1062 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1063 } |
1064 | |
1065 void TemplateTable::pop2() { | |
1066 transition(vtos, vtos); | |
1506 | 1067 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1068 } |
1069 | |
1070 void TemplateTable::dup() { | |
1071 transition(vtos, vtos); | |
1506 | 1072 __ load_ptr(0, rax); |
1073 __ push_ptr(rax); | |
0 | 1074 // stack: ..., a, a |
1075 } | |
1076 | |
1077 void TemplateTable::dup_x1() { | |
1078 transition(vtos, vtos); | |
1079 // stack: ..., a, b | |
1506 | 1080 __ load_ptr( 0, rax); // load b |
1081 __ load_ptr( 1, rcx); // load a | |
1082 __ store_ptr(1, rax); // store b | |
1083 __ store_ptr(0, rcx); // store a | |
1084 __ push_ptr(rax); // push b | |
0 | 1085 // stack: ..., b, a, b |
1086 } | |
1087 | |
1088 void TemplateTable::dup_x2() { | |
1089 transition(vtos, vtos); | |
1090 // stack: ..., a, b, c | |
1506 | 1091 __ load_ptr( 0, rax); // load c |
1092 __ load_ptr( 2, rcx); // load a | |
1093 __ store_ptr(2, rax); // store c in a | |
1094 __ push_ptr(rax); // push c | |
0 | 1095 // stack: ..., c, b, c, c |
1506 | 1096 __ load_ptr( 2, rax); // load b |
1097 __ store_ptr(2, rcx); // store a in b | |
0 | 1098 // stack: ..., c, a, c, c |
1506 | 1099 __ store_ptr(1, rax); // store b in c |
0 | 1100 // stack: ..., c, a, b, c |
1101 } | |
1102 | |
1103 void TemplateTable::dup2() { | |
1104 transition(vtos, vtos); | |
1105 // stack: ..., a, b | |
1506 | 1106 __ load_ptr(1, rax); // load a |
1107 __ push_ptr(rax); // push a | |
1108 __ load_ptr(1, rax); // load b | |
1109 __ push_ptr(rax); // push b | |
0 | 1110 // stack: ..., a, b, a, b |
1111 } | |
1112 | |
1113 void TemplateTable::dup2_x1() { | |
1114 transition(vtos, vtos); | |
1115 // stack: ..., a, b, c | |
1506 | 1116 __ load_ptr( 0, rcx); // load c |
1117 __ load_ptr( 1, rax); // load b | |
1118 __ push_ptr(rax); // push b | |
1119 __ push_ptr(rcx); // push c | |
0 | 1120 // stack: ..., a, b, c, b, c |
1506 | 1121 __ store_ptr(3, rcx); // store c in b |
0 | 1122 // stack: ..., a, c, c, b, c |
1506 | 1123 __ load_ptr( 4, rcx); // load a |
1124 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1125 // stack: ..., a, c, a, b, c |
1506 | 1126 __ store_ptr(4, rax); // store b in a |
0 | 1127 // stack: ..., b, c, a, b, c |
1128 } | |
1129 | |
1130 void TemplateTable::dup2_x2() { | |
1131 transition(vtos, vtos); | |
1132 // stack: ..., a, b, c, d | |
1506 | 1133 __ load_ptr( 0, rcx); // load d |
1134 __ load_ptr( 1, rax); // load c | |
1135 __ push_ptr(rax); // push c | |
1136 __ push_ptr(rcx); // push d | |
0 | 1137 // stack: ..., a, b, c, d, c, d |
1506 | 1138 __ load_ptr( 4, rax); // load b |
1139 __ store_ptr(2, rax); // store b in d | |
1140 __ store_ptr(4, rcx); // store d in b | |
0 | 1141 // stack: ..., a, d, c, b, c, d |
1506 | 1142 __ load_ptr( 5, rcx); // load a |
1143 __ load_ptr( 3, rax); // load c | |
1144 __ store_ptr(3, rcx); // store a in c | |
1145 __ store_ptr(5, rax); // store c in a | |
0 | 1146 // stack: ..., c, d, a, b, c, d |
1147 } | |
1148 | |
1149 void TemplateTable::swap() { | |
1150 transition(vtos, vtos); | |
1151 // stack: ..., a, b | |
1506 | 1152 __ load_ptr( 1, rcx); // load a |
1153 __ load_ptr( 0, rax); // load b | |
1154 __ store_ptr(0, rcx); // store a in b | |
1155 __ store_ptr(1, rax); // store b in a | |
0 | 1156 // stack: ..., b, a |
1157 } | |
1158 | |
1159 void TemplateTable::iop2(Operation op) { | |
1160 transition(itos, itos); | |
1161 switch (op) { | |
1162 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1163 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1164 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1165 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1166 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1167 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1168 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1169 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1170 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1171 default : ShouldNotReachHere(); | |
1172 } | |
1173 } | |
1174 | |
1175 void TemplateTable::lop2(Operation op) { | |
1176 transition(ltos, ltos); | |
1177 switch (op) { | |
1506 | 1178 case add : __ pop_l(rdx); __ addptr(rax, rdx); break; |
1179 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break; | |
1180 case _and : __ pop_l(rdx); __ andptr(rax, rdx); break; | |
1181 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1182 case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break; | |
1183 default : ShouldNotReachHere(); | |
0 | 1184 } |
1185 } | |
1186 | |
1187 void TemplateTable::idiv() { | |
1188 transition(itos, itos); | |
1189 __ movl(rcx, rax); | |
1190 __ pop_i(rax); | |
1191 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1192 // they are not equal, one could do a normal division (no correction | |
1193 // needed), which may speed up this implementation for the common case. | |
1194 // (see also JVM spec., p.243 & p.271) | |
1195 __ corrected_idivl(rcx); | |
1196 } | |
1197 | |
1198 void TemplateTable::irem() { | |
1199 transition(itos, itos); | |
1200 __ movl(rcx, rax); | |
1201 __ pop_i(rax); | |
1202 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1203 // they are not equal, one could do a normal division (no correction | |
1204 // needed), which may speed up this implementation for the common case. | |
1205 // (see also JVM spec., p.243 & p.271) | |
1206 __ corrected_idivl(rcx); | |
1207 __ movl(rax, rdx); | |
1208 } | |
1209 | |
1210 void TemplateTable::lmul() { | |
1211 transition(ltos, ltos); | |
1212 __ pop_l(rdx); | |
1213 __ imulq(rax, rdx); | |
1214 } | |
1215 | |
1216 void TemplateTable::ldiv() { | |
1217 transition(ltos, ltos); | |
304 | 1218 __ mov(rcx, rax); |
0 | 1219 __ pop_l(rax); |
1220 // generate explicit div0 check | |
1221 __ testq(rcx, rcx); | |
1222 __ jump_cc(Assembler::zero, | |
1223 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1224 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1225 // they are not equal, one could do a normal division (no correction | |
1226 // needed), which may speed up this implementation for the common case. | |
1227 // (see also JVM spec., p.243 & p.271) | |
1228 __ corrected_idivq(rcx); // kills rbx | |
1229 } | |
1230 | |
1231 void TemplateTable::lrem() { | |
1232 transition(ltos, ltos); | |
304 | 1233 __ mov(rcx, rax); |
0 | 1234 __ pop_l(rax); |
1235 __ testq(rcx, rcx); | |
1236 __ jump_cc(Assembler::zero, | |
1237 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1238 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1239 // they are not equal, one could do a normal division (no correction | |
1240 // needed), which may speed up this implementation for the common case. | |
1241 // (see also JVM spec., p.243 & p.271) | |
1242 __ corrected_idivq(rcx); // kills rbx | |
304 | 1243 __ mov(rax, rdx); |
0 | 1244 } |
1245 | |
1246 void TemplateTable::lshl() { | |
1247 transition(itos, ltos); | |
1248 __ movl(rcx, rax); // get shift count | |
1249 __ pop_l(rax); // get shift value | |
1250 __ shlq(rax); | |
1251 } | |
1252 | |
1253 void TemplateTable::lshr() { | |
1254 transition(itos, ltos); | |
1255 __ movl(rcx, rax); // get shift count | |
1256 __ pop_l(rax); // get shift value | |
1257 __ sarq(rax); | |
1258 } | |
1259 | |
1260 void TemplateTable::lushr() { | |
1261 transition(itos, ltos); | |
1262 __ movl(rcx, rax); // get shift count | |
1263 __ pop_l(rax); // get shift value | |
1264 __ shrq(rax); | |
1265 } | |
1266 | |
1267 void TemplateTable::fop2(Operation op) { | |
1268 transition(ftos, ftos); | |
1269 switch (op) { | |
1270 case add: | |
1271 __ addss(xmm0, at_rsp()); | |
1506 | 1272 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1273 break; |
1274 case sub: | |
1275 __ movflt(xmm1, xmm0); | |
1276 __ pop_f(xmm0); | |
1277 __ subss(xmm0, xmm1); | |
1278 break; | |
1279 case mul: | |
1280 __ mulss(xmm0, at_rsp()); | |
1506 | 1281 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1282 break; |
1283 case div: | |
1284 __ movflt(xmm1, xmm0); | |
1285 __ pop_f(xmm0); | |
1286 __ divss(xmm0, xmm1); | |
1287 break; | |
1288 case rem: | |
1289 __ movflt(xmm1, xmm0); | |
1290 __ pop_f(xmm0); | |
1291 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1292 break; | |
1293 default: | |
1294 ShouldNotReachHere(); | |
1295 break; | |
1296 } | |
1297 } | |
1298 | |
1299 void TemplateTable::dop2(Operation op) { | |
1300 transition(dtos, dtos); | |
1301 switch (op) { | |
1302 case add: | |
1303 __ addsd(xmm0, at_rsp()); | |
1506 | 1304 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1305 break; |
1306 case sub: | |
1307 __ movdbl(xmm1, xmm0); | |
1308 __ pop_d(xmm0); | |
1309 __ subsd(xmm0, xmm1); | |
1310 break; | |
1311 case mul: | |
1312 __ mulsd(xmm0, at_rsp()); | |
1506 | 1313 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1314 break; |
1315 case div: | |
1316 __ movdbl(xmm1, xmm0); | |
1317 __ pop_d(xmm0); | |
1318 __ divsd(xmm0, xmm1); | |
1319 break; | |
1320 case rem: | |
1321 __ movdbl(xmm1, xmm0); | |
1322 __ pop_d(xmm0); | |
1323 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1324 break; | |
1325 default: | |
1326 ShouldNotReachHere(); | |
1327 break; | |
1328 } | |
1329 } | |
1330 | |
1331 void TemplateTable::ineg() { | |
1332 transition(itos, itos); | |
1333 __ negl(rax); | |
1334 } | |
1335 | |
1336 void TemplateTable::lneg() { | |
1337 transition(ltos, ltos); | |
1338 __ negq(rax); | |
1339 } | |
1340 | |
1341 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1342 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1343 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1344 // of 128-bits operands for SSE instructions. | |
1345 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1346 // Store the value to a 128-bits operand. | |
1347 operand[0] = lo; | |
1348 operand[1] = hi; | |
1349 return operand; | |
1350 } | |
1351 | |
1352 // Buffer for 128-bits masks used by SSE instructions. | |
1353 static jlong float_signflip_pool[2*2]; | |
1354 static jlong double_signflip_pool[2*2]; | |
1355 | |
1356 void TemplateTable::fneg() { | |
1357 transition(ftos, ftos); | |
1358 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1359 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1360 } | |
1361 | |
1362 void TemplateTable::dneg() { | |
1363 transition(dtos, dtos); | |
1364 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1365 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1366 } | |
1367 | |
1368 void TemplateTable::iinc() { | |
1369 transition(vtos, vtos); | |
1370 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1371 locals_index(rbx); | |
1372 __ addl(iaddress(rbx), rdx); | |
1373 } | |
1374 | |
1375 void TemplateTable::wide_iinc() { | |
1376 transition(vtos, vtos); | |
1377 __ movl(rdx, at_bcp(4)); // get constant | |
1378 locals_index_wide(rbx); | |
1379 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1380 __ sarl(rdx, 16); | |
1381 __ addl(iaddress(rbx), rdx); | |
1382 // Note: should probably use only one movl to get both | |
1383 // the index and the constant -> fix this | |
1384 } | |
1385 | |
1386 void TemplateTable::convert() { | |
1387 // Checking | |
1388 #ifdef ASSERT | |
1389 { | |
1390 TosState tos_in = ilgl; | |
1391 TosState tos_out = ilgl; | |
1392 switch (bytecode()) { | |
1393 case Bytecodes::_i2l: // fall through | |
1394 case Bytecodes::_i2f: // fall through | |
1395 case Bytecodes::_i2d: // fall through | |
1396 case Bytecodes::_i2b: // fall through | |
1397 case Bytecodes::_i2c: // fall through | |
1398 case Bytecodes::_i2s: tos_in = itos; break; | |
1399 case Bytecodes::_l2i: // fall through | |
1400 case Bytecodes::_l2f: // fall through | |
1401 case Bytecodes::_l2d: tos_in = ltos; break; | |
1402 case Bytecodes::_f2i: // fall through | |
1403 case Bytecodes::_f2l: // fall through | |
1404 case Bytecodes::_f2d: tos_in = ftos; break; | |
1405 case Bytecodes::_d2i: // fall through | |
1406 case Bytecodes::_d2l: // fall through | |
1407 case Bytecodes::_d2f: tos_in = dtos; break; | |
1408 default : ShouldNotReachHere(); | |
1409 } | |
1410 switch (bytecode()) { | |
1411 case Bytecodes::_l2i: // fall through | |
1412 case Bytecodes::_f2i: // fall through | |
1413 case Bytecodes::_d2i: // fall through | |
1414 case Bytecodes::_i2b: // fall through | |
1415 case Bytecodes::_i2c: // fall through | |
1416 case Bytecodes::_i2s: tos_out = itos; break; | |
1417 case Bytecodes::_i2l: // fall through | |
1418 case Bytecodes::_f2l: // fall through | |
1419 case Bytecodes::_d2l: tos_out = ltos; break; | |
1420 case Bytecodes::_i2f: // fall through | |
1421 case Bytecodes::_l2f: // fall through | |
1422 case Bytecodes::_d2f: tos_out = ftos; break; | |
1423 case Bytecodes::_i2d: // fall through | |
1424 case Bytecodes::_l2d: // fall through | |
1425 case Bytecodes::_f2d: tos_out = dtos; break; | |
1426 default : ShouldNotReachHere(); | |
1427 } | |
1428 transition(tos_in, tos_out); | |
1429 } | |
1430 #endif // ASSERT | |
1431 | |
1432 static const int64_t is_nan = 0x8000000000000000L; | |
1433 | |
1434 // Conversion | |
1435 switch (bytecode()) { | |
1436 case Bytecodes::_i2l: | |
1437 __ movslq(rax, rax); | |
1438 break; | |
1439 case Bytecodes::_i2f: | |
1440 __ cvtsi2ssl(xmm0, rax); | |
1441 break; | |
1442 case Bytecodes::_i2d: | |
1443 __ cvtsi2sdl(xmm0, rax); | |
1444 break; | |
1445 case Bytecodes::_i2b: | |
1446 __ movsbl(rax, rax); | |
1447 break; | |
1448 case Bytecodes::_i2c: | |
1449 __ movzwl(rax, rax); | |
1450 break; | |
1451 case Bytecodes::_i2s: | |
1452 __ movswl(rax, rax); | |
1453 break; | |
1454 case Bytecodes::_l2i: | |
1455 __ movl(rax, rax); | |
1456 break; | |
1457 case Bytecodes::_l2f: | |
1458 __ cvtsi2ssq(xmm0, rax); | |
1459 break; | |
1460 case Bytecodes::_l2d: | |
1461 __ cvtsi2sdq(xmm0, rax); | |
1462 break; | |
1463 case Bytecodes::_f2i: | |
1464 { | |
1465 Label L; | |
1466 __ cvttss2sil(rax, xmm0); | |
1467 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1468 __ jcc(Assembler::notEqual, L); | |
1469 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1470 __ bind(L); | |
1471 } | |
1472 break; | |
1473 case Bytecodes::_f2l: | |
1474 { | |
1475 Label L; | |
1476 __ cvttss2siq(rax, xmm0); | |
1477 // NaN or overflow/underflow? | |
1478 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1479 __ jcc(Assembler::notEqual, L); | |
1480 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1481 __ bind(L); | |
1482 } | |
1483 break; | |
1484 case Bytecodes::_f2d: | |
1485 __ cvtss2sd(xmm0, xmm0); | |
1486 break; | |
1487 case Bytecodes::_d2i: | |
1488 { | |
1489 Label L; | |
1490 __ cvttsd2sil(rax, xmm0); | |
1491 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1492 __ jcc(Assembler::notEqual, L); | |
1493 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1494 __ bind(L); | |
1495 } | |
1496 break; | |
1497 case Bytecodes::_d2l: | |
1498 { | |
1499 Label L; | |
1500 __ cvttsd2siq(rax, xmm0); | |
1501 // NaN or overflow/underflow? | |
1502 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1503 __ jcc(Assembler::notEqual, L); | |
1504 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1505 __ bind(L); | |
1506 } | |
1507 break; | |
1508 case Bytecodes::_d2f: | |
1509 __ cvtsd2ss(xmm0, xmm0); | |
1510 break; | |
1511 default: | |
1512 ShouldNotReachHere(); | |
1513 } | |
1514 } | |
1515 | |
1516 void TemplateTable::lcmp() { | |
1517 transition(ltos, itos); | |
1518 Label done; | |
1519 __ pop_l(rdx); | |
1520 __ cmpq(rdx, rax); | |
1521 __ movl(rax, -1); | |
1522 __ jccb(Assembler::less, done); | |
1523 __ setb(Assembler::notEqual, rax); | |
1524 __ movzbl(rax, rax); | |
1525 __ bind(done); | |
1526 } | |
1527 | |
1528 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1529 Label done; | |
1530 if (is_float) { | |
1531 // XXX get rid of pop here, use ... reg, mem32 | |
1532 __ pop_f(xmm1); | |
1533 __ ucomiss(xmm1, xmm0); | |
1534 } else { | |
1535 // XXX get rid of pop here, use ... reg, mem64 | |
1536 __ pop_d(xmm1); | |
1537 __ ucomisd(xmm1, xmm0); | |
1538 } | |
1539 if (unordered_result < 0) { | |
1540 __ movl(rax, -1); | |
1541 __ jccb(Assembler::parity, done); | |
1542 __ jccb(Assembler::below, done); | |
1543 __ setb(Assembler::notEqual, rdx); | |
1544 __ movzbl(rax, rdx); | |
1545 } else { | |
1546 __ movl(rax, 1); | |
1547 __ jccb(Assembler::parity, done); | |
1548 __ jccb(Assembler::above, done); | |
1549 __ movl(rax, 0); | |
1550 __ jccb(Assembler::equal, done); | |
1551 __ decrementl(rax); | |
1552 } | |
1553 __ bind(done); | |
1554 } | |
1555 | |
1556 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1557 __ get_method(rcx); // rcx holds method | |
1558 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1559 // holds bumped taken count | |
1560 | |
1561 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
1562 InvocationCounter::counter_offset(); | |
1563 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
1564 InvocationCounter::counter_offset(); | |
1565 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1566 | |
1567 // Load up edx with the branch displacement | |
1568 __ movl(rdx, at_bcp(1)); | |
1569 __ bswapl(rdx); | |
1570 | |
1571 if (!is_wide) { | |
1572 __ sarl(rdx, 16); | |
1573 } | |
304 | 1574 __ movl2ptr(rdx, rdx); |
0 | 1575 |
1576 // Handle all the JSR stuff here, then exit. | |
1577 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1578 // normal-branch stuff occurring below. |
0 | 1579 if (is_jsr) { |
1580 // Pre-load the next target bytecode into rbx | |
1581 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1582 | |
1583 // compute return address as bci in rax | |
304 | 1584 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
0 | 1585 in_bytes(constMethodOopDesc::codes_offset()))); |
304 | 1586 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); |
0 | 1587 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1588 __ addptr(r13, rdx); |
0 | 1589 // jsr returns atos that is not an oop |
1590 __ push_i(rax); | |
1591 __ dispatch_only(vtos); | |
1592 return; | |
1593 } | |
1594 | |
1595 // Normal (non-jsr) branch handling | |
1596 | |
1597 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1598 __ addptr(r13, rdx); |
0 | 1599 |
1600 assert(UseLoopCounter || !UseOnStackReplacement, | |
1601 "on-stack-replacement requires loop counters"); | |
1602 Label backedge_counter_overflow; | |
1603 Label profile_method; | |
1604 Label dispatch; | |
1605 if (UseLoopCounter) { | |
1606 // increment backedge counter for backward branches | |
1607 // rax: MDO | |
1608 // ebx: MDO bumped taken-count | |
1609 // rcx: method | |
1610 // rdx: target offset | |
1611 // r13: target bcp | |
1612 // r14: locals pointer | |
1613 __ testl(rdx, rdx); // check if forward or backward branch | |
1614 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1783 | 1615 if (TieredCompilation) { |
1616 Label no_mdo; | |
1617 int increment = InvocationCounter::count_increment; | |
1618 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1619 if (ProfileInterpreter) { | |
1620 // Are we profiling? | |
1621 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1622 __ testptr(rbx, rbx); | |
1623 __ jccb(Assembler::zero, no_mdo); | |
1624 // Increment the MDO backedge counter | |
1625 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1626 in_bytes(InvocationCounter::counter_offset())); | |
1627 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1628 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1629 __ jmp(dispatch); | |
0 | 1630 } |
1783 | 1631 __ bind(no_mdo); |
1632 // Increment backedge counter in methodOop | |
1633 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1634 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1635 } else { |
1783 | 1636 // increment counter |
1637 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1638 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1639 __ movl(Address(rcx, be_offset), rax); // store counter | |
1640 | |
1641 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1642 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1643 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1644 | |
1645 if (ProfileInterpreter) { | |
1646 // Test to see if we should create a method data oop | |
0 | 1647 __ cmp32(rax, |
1783 | 1648 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1649 __ jcc(Assembler::less, dispatch); | |
1650 | |
1651 // if no method data exists, go to profile method | |
1652 __ test_method_data_pointer(rax, profile_method); | |
1653 | |
1654 if (UseOnStackReplacement) { | |
1655 // check for overflow against ebx which is the MDO taken count | |
1656 __ cmp32(rbx, | |
1657 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1658 __ jcc(Assembler::below, dispatch); | |
1659 | |
1660 // When ProfileInterpreter is on, the backedge_count comes | |
1661 // from the methodDataOop, which value does not get reset on | |
1662 // the call to frequency_counter_overflow(). To avoid | |
1663 // excessive calls to the overflow routine while the method is | |
1664 // being compiled, add a second test to make sure the overflow | |
1665 // function is called only once every overflow_frequency. | |
1666 const int overflow_frequency = 1024; | |
1667 __ andl(rbx, overflow_frequency - 1); | |
1668 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1669 | |
1670 } | |
1671 } else { | |
1672 if (UseOnStackReplacement) { | |
1673 // check for overflow against eax, which is the sum of the | |
1674 // counters | |
1675 __ cmp32(rax, | |
1676 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1677 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1678 | |
1679 } | |
0 | 1680 } |
1681 } | |
1682 __ bind(dispatch); | |
1683 } | |
1684 | |
1685 // Pre-load the next target bytecode into rbx | |
1686 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1687 | |
1688 // continue with the bytecode @ target | |
1689 // eax: return bci for jsr's, unused otherwise | |
1690 // ebx: target bytecode | |
1691 // r13: target bcp | |
1692 __ dispatch_only(vtos); | |
1693 | |
1694 if (UseLoopCounter) { | |
1695 if (ProfileInterpreter) { | |
1696 // Out-of-line code to allocate method data oop. | |
1697 __ bind(profile_method); | |
1698 __ call_VM(noreg, | |
1699 CAST_FROM_FN_PTR(address, | |
1700 InterpreterRuntime::profile_method), r13); | |
1701 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
304 | 1702 __ movptr(rcx, Address(rbp, method_offset)); |
1703 __ movptr(rcx, Address(rcx, | |
1704 in_bytes(methodOopDesc::method_data_offset()))); | |
1705 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1706 rcx); | |
0 | 1707 __ test_method_data_pointer(rcx, dispatch); |
1708 // offset non-null mdp by MDO::data_offset() + IR::profile_method() | |
304 | 1709 __ addptr(rcx, in_bytes(methodDataOopDesc::data_offset())); |
1710 __ addptr(rcx, rax); | |
1711 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
1712 rcx); | |
0 | 1713 __ jmp(dispatch); |
1714 } | |
1715 | |
1716 if (UseOnStackReplacement) { | |
1717 // invocation counter overflow | |
1718 __ bind(backedge_counter_overflow); | |
304 | 1719 __ negptr(rdx); |
1720 __ addptr(rdx, r13); // branch bcp | |
0 | 1721 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1722 __ call_VM(noreg, | |
1723 CAST_FROM_FN_PTR(address, | |
1724 InterpreterRuntime::frequency_counter_overflow), | |
1725 rdx); | |
1726 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1727 | |
1728 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1729 // ebx: target bytecode | |
1730 // rdx: scratch | |
1731 // r14: locals pointer | |
1732 // r13: bcp | |
304 | 1733 __ testptr(rax, rax); // test result |
0 | 1734 __ jcc(Assembler::zero, dispatch); // no osr if null |
1735 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1736 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1737 __ cmpl(rcx, InvalidOSREntryBci); | |
1738 __ jcc(Assembler::equal, dispatch); | |
1739 | |
1740 // We have the address of an on stack replacement routine in eax | |
1741 // We need to prepare to execute the OSR method. First we must | |
1742 // migrate the locals and monitors off of the stack. | |
1743 | |
304 | 1744 __ mov(r13, rax); // save the nmethod |
0 | 1745 |
1746 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1747 | |
1748 // eax is OSR buffer, move it to expected parameter location | |
304 | 1749 __ mov(j_rarg0, rax); |
0 | 1750 |
1751 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1752 // registers change across platforms as we are in the midst of a calling | |
1753 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1754 | |
1755 const Register retaddr = j_rarg2; | |
1756 const Register sender_sp = j_rarg1; | |
1757 | |
1758 // pop the interpreter frame | |
304 | 1759 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1760 __ leave(); // remove frame anchor |
304 | 1761 __ pop(retaddr); // get return address |
1762 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1763 // Ensure compiled code always sees stack at proper alignment |
304 | 1764 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1765 |
1766 // unlike x86 we need no specialized return from compiled code | |
1767 // to the interpreter or the call stub. | |
1768 | |
1769 // push the return address | |
304 | 1770 __ push(retaddr); |
0 | 1771 |
1772 // and begin the OSR nmethod | |
1773 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1774 } | |
1775 } | |
1776 } | |
1777 | |
1778 | |
1779 void TemplateTable::if_0cmp(Condition cc) { | |
1780 transition(itos, vtos); | |
1781 // assume branch is more often taken than not (loops use backward branches) | |
1782 Label not_taken; | |
1783 __ testl(rax, rax); | |
1784 __ jcc(j_not(cc), not_taken); | |
1785 branch(false, false); | |
1786 __ bind(not_taken); | |
1787 __ profile_not_taken_branch(rax); | |
1788 } | |
1789 | |
1790 void TemplateTable::if_icmp(Condition cc) { | |
1791 transition(itos, vtos); | |
1792 // assume branch is more often taken than not (loops use backward branches) | |
1793 Label not_taken; | |
1794 __ pop_i(rdx); | |
1795 __ cmpl(rdx, rax); | |
1796 __ jcc(j_not(cc), not_taken); | |
1797 branch(false, false); | |
1798 __ bind(not_taken); | |
1799 __ profile_not_taken_branch(rax); | |
1800 } | |
1801 | |
1802 void TemplateTable::if_nullcmp(Condition cc) { | |
1803 transition(atos, vtos); | |
1804 // assume branch is more often taken than not (loops use backward branches) | |
1805 Label not_taken; | |
304 | 1806 __ testptr(rax, rax); |
0 | 1807 __ jcc(j_not(cc), not_taken); |
1808 branch(false, false); | |
1809 __ bind(not_taken); | |
1810 __ profile_not_taken_branch(rax); | |
1811 } | |
1812 | |
1813 void TemplateTable::if_acmp(Condition cc) { | |
1814 transition(atos, vtos); | |
1815 // assume branch is more often taken than not (loops use backward branches) | |
1816 Label not_taken; | |
1817 __ pop_ptr(rdx); | |
304 | 1818 __ cmpptr(rdx, rax); |
0 | 1819 __ jcc(j_not(cc), not_taken); |
1820 branch(false, false); | |
1821 __ bind(not_taken); | |
1822 __ profile_not_taken_branch(rax); | |
1823 } | |
1824 | |
1825 void TemplateTable::ret() { | |
1826 transition(vtos, vtos); | |
1827 locals_index(rbx); | |
304 | 1828 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1829 __ profile_ret(rbx, rcx); |
1830 __ get_method(rax); | |
304 | 1831 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1832 __ lea(r13, Address(r13, rbx, Address::times_1, | |
1833 constMethodOopDesc::codes_offset())); | |
0 | 1834 __ dispatch_next(vtos); |
1835 } | |
1836 | |
1837 void TemplateTable::wide_ret() { | |
1838 transition(vtos, vtos); | |
1839 locals_index_wide(rbx); | |
304 | 1840 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1841 __ profile_ret(rbx, rcx); |
1842 __ get_method(rax); | |
304 | 1843 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1844 __ lea(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1845 __ dispatch_next(vtos); |
1846 } | |
1847 | |
1848 void TemplateTable::tableswitch() { | |
1849 Label default_case, continue_execution; | |
1850 transition(itos, vtos); | |
1851 // align r13 | |
304 | 1852 __ lea(rbx, at_bcp(BytesPerInt)); |
1853 __ andptr(rbx, -BytesPerInt); | |
0 | 1854 // load lo & hi |
1855 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1856 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1857 __ bswapl(rcx); | |
1858 __ bswapl(rdx); | |
1859 // check against lo & hi | |
1860 __ cmpl(rax, rcx); | |
1861 __ jcc(Assembler::less, default_case); | |
1862 __ cmpl(rax, rdx); | |
1863 __ jcc(Assembler::greater, default_case); | |
1864 // lookup dispatch offset | |
1865 __ subl(rax, rcx); | |
1866 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1867 __ profile_switch_case(rax, rbx, rcx); | |
1868 // continue execution | |
1869 __ bind(continue_execution); | |
1870 __ bswapl(rdx); | |
304 | 1871 __ movl2ptr(rdx, rdx); |
0 | 1872 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1873 __ addptr(r13, rdx); |
0 | 1874 __ dispatch_only(vtos); |
1875 // handle default | |
1876 __ bind(default_case); | |
1877 __ profile_switch_default(rax); | |
1878 __ movl(rdx, Address(rbx, 0)); | |
1879 __ jmp(continue_execution); | |
1880 } | |
1881 | |
1882 void TemplateTable::lookupswitch() { | |
1883 transition(itos, itos); | |
1884 __ stop("lookupswitch bytecode should have been rewritten"); | |
1885 } | |
1886 | |
1887 void TemplateTable::fast_linearswitch() { | |
1888 transition(itos, vtos); | |
1889 Label loop_entry, loop, found, continue_execution; | |
1890 // bswap rax so we can avoid bswapping the table entries | |
1891 __ bswapl(rax); | |
1892 // align r13 | |
304 | 1893 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1894 // this instruction (change offsets | |
1895 // below) | |
1896 __ andptr(rbx, -BytesPerInt); | |
0 | 1897 // set counter |
1898 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1899 __ bswapl(rcx); | |
1900 __ jmpb(loop_entry); | |
1901 // table search | |
1902 __ bind(loop); | |
1903 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1904 __ jcc(Assembler::equal, found); | |
1905 __ bind(loop_entry); | |
1906 __ decrementl(rcx); | |
1907 __ jcc(Assembler::greaterEqual, loop); | |
1908 // default case | |
1909 __ profile_switch_default(rax); | |
1910 __ movl(rdx, Address(rbx, 0)); | |
1911 __ jmp(continue_execution); | |
1912 // entry found -> get offset | |
1913 __ bind(found); | |
1914 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1915 __ profile_switch_case(rcx, rax, rbx); | |
1916 // continue execution | |
1917 __ bind(continue_execution); | |
1918 __ bswapl(rdx); | |
304 | 1919 __ movl2ptr(rdx, rdx); |
0 | 1920 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1921 __ addptr(r13, rdx); |
0 | 1922 __ dispatch_only(vtos); |
1923 } | |
1924 | |
1925 void TemplateTable::fast_binaryswitch() { | |
1926 transition(itos, vtos); | |
1927 // Implementation using the following core algorithm: | |
1928 // | |
1929 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1930 // // Binary search according to "Methodik des Programmierens" by | |
1931 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1932 // int i = 0; | |
1933 // int j = n; | |
1934 // while (i+1 < j) { | |
1935 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1936 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1937 // // where a stands for the array and assuming that the (inexisting) | |
1938 // // element a[n] is infinitely big. | |
1939 // int h = (i + j) >> 1; | |
1940 // // i < h < j | |
1941 // if (key < array[h].fast_match()) { | |
1942 // j = h; | |
1943 // } else { | |
1944 // i = h; | |
1945 // } | |
1946 // } | |
1947 // // R: a[i] <= key < a[i+1] or Q | |
1948 // // (i.e., if key is within array, i is the correct index) | |
1949 // return i; | |
1950 // } | |
1951 | |
1952 // Register allocation | |
1953 const Register key = rax; // already set (tosca) | |
1954 const Register array = rbx; | |
1955 const Register i = rcx; | |
1956 const Register j = rdx; | |
1957 const Register h = rdi; | |
1958 const Register temp = rsi; | |
1959 | |
1960 // Find array start | |
304 | 1961 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1962 // get rid of this | |
1963 // instruction (change | |
1964 // offsets below) | |
1965 __ andptr(array, -BytesPerInt); | |
0 | 1966 |
1967 // Initialize i & j | |
1968 __ xorl(i, i); // i = 0; | |
1969 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1970 | |
1971 // Convert j into native byteordering | |
1972 __ bswapl(j); | |
1973 | |
1974 // And start | |
1975 Label entry; | |
1976 __ jmp(entry); | |
1977 | |
1978 // binary search loop | |
1979 { | |
1980 Label loop; | |
1981 __ bind(loop); | |
1982 // int h = (i + j) >> 1; | |
1983 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1984 __ sarl(h, 1); // h = (i + j) >> 1; | |
1985 // if (key < array[h].fast_match()) { | |
1986 // j = h; | |
1987 // } else { | |
1988 // i = h; | |
1989 // } | |
1990 // Convert array[h].match to native byte-ordering before compare | |
1991 __ movl(temp, Address(array, h, Address::times_8)); | |
1992 __ bswapl(temp); | |
1993 __ cmpl(key, temp); | |
1994 // j = h if (key < array[h].fast_match()) | |
1995 __ cmovl(Assembler::less, j, h); | |
1996 // i = h if (key >= array[h].fast_match()) | |
1997 __ cmovl(Assembler::greaterEqual, i, h); | |
1998 // while (i+1 < j) | |
1999 __ bind(entry); | |
2000 __ leal(h, Address(i, 1)); // i+1 | |
2001 __ cmpl(h, j); // i+1 < j | |
2002 __ jcc(Assembler::less, loop); | |
2003 } | |
2004 | |
2005 // end of binary search, result index is i (must check again!) | |
2006 Label default_case; | |
2007 // Convert array[i].match to native byte-ordering before compare | |
2008 __ movl(temp, Address(array, i, Address::times_8)); | |
2009 __ bswapl(temp); | |
2010 __ cmpl(key, temp); | |
2011 __ jcc(Assembler::notEqual, default_case); | |
2012 | |
2013 // entry found -> j = offset | |
2014 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
2015 __ profile_switch_case(i, key, array); | |
2016 __ bswapl(j); | |
304 | 2017 __ movl2ptr(j, j); |
0 | 2018 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2019 __ addptr(r13, j); |
0 | 2020 __ dispatch_only(vtos); |
2021 | |
2022 // default case -> j = default offset | |
2023 __ bind(default_case); | |
2024 __ profile_switch_default(i); | |
2025 __ movl(j, Address(array, -2 * BytesPerInt)); | |
2026 __ bswapl(j); | |
304 | 2027 __ movl2ptr(j, j); |
0 | 2028 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2029 __ addptr(r13, j); |
0 | 2030 __ dispatch_only(vtos); |
2031 } | |
2032 | |
2033 | |
2034 void TemplateTable::_return(TosState state) { | |
2035 transition(state, state); | |
2036 assert(_desc->calls_vm(), | |
2037 "inconsistent calls_vm information"); // call in remove_activation | |
2038 | |
2039 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2040 assert(state == vtos, "only valid state"); | |
304 | 2041 __ movptr(c_rarg1, aaddress(0)); |
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2042 __ load_klass(rdi, c_rarg1); |
0 | 2043 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
2044 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
2045 Label skip_register_finalizer; | |
2046 __ jcc(Assembler::zero, skip_register_finalizer); | |
2047 | |
2048 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2049 | |
2050 __ bind(skip_register_finalizer); | |
2051 } | |
2052 | |
2053 __ remove_activation(state, r13); | |
2054 __ jmp(r13); | |
2055 } | |
2056 | |
2057 // ---------------------------------------------------------------------------- | |
2058 // Volatile variables demand their effects be made known to all CPU's | |
2059 // in order. Store buffers on most chips allow reads & writes to | |
2060 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2061 // without some kind of memory barrier (i.e., it's not sufficient that | |
2062 // the interpreter does not reorder volatile references, the hardware | |
2063 // also must not reorder them). | |
2064 // | |
2065 // According to the new Java Memory Model (JMM): | |
2066 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2067 // writes act as aquire & release, so: | |
2068 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2069 // happen after the read float up to before the read. It's OK for | |
2070 // non-volatile memory refs that happen before the volatile read to | |
2071 // float down below it. | |
2072 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2073 // memory refs that happen BEFORE the write float down to after the | |
2074 // write. It's OK for non-volatile memory refs that happen after the | |
2075 // volatile write to float up before it. | |
2076 // | |
2077 // We only put in barriers around volatile refs (they are expensive), | |
2078 // not _between_ memory refs (that would require us to track the | |
2079 // flavor of the previous memory refs). Requirements (2) and (3) | |
2080 // require some barriers before volatile stores and after volatile | |
2081 // loads. These nearly cover requirement (1) but miss the | |
2082 // volatile-store-volatile-load case. This final case is placed after | |
2083 // volatile-stores although it could just as well go before | |
2084 // volatile-loads. | |
2085 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2086 order_constraint) { | |
2087 // Helper function to insert a is-volatile test and memory barrier | |
2088 if (os::is_MP()) { // Not needed on single CPU | |
2089 __ membar(order_constraint); | |
2090 } | |
2091 } | |
2092 | |
1565 | 2093 void TemplateTable::resolve_cache_and_index(int byte_no, |
2094 Register result, | |
2095 Register Rcache, | |
2096 Register index, | |
2097 size_t index_size) { | |
0 | 2098 const Register temp = rbx; |
1565 | 2099 assert_different_registers(result, Rcache, index, temp); |
2100 | |
0 | 2101 Label resolved; |
1565 | 2102 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2103 if (byte_no == f1_oop) { | |
2104 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2105 // This kind of CP cache entry does not need to match the flags byte, because | |
2106 // there is a 1-1 relation between bytecode type and CP entry type. | |
2107 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
2108 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
2109 __ testptr(result, result); | |
1108 | 2110 __ jcc(Assembler::notEqual, resolved); |
2111 } else { | |
1565 | 2112 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2113 assert(result == noreg, ""); //else change code for setting result | |
2114 const int shift_count = (1 + byte_no) * BitsPerByte; | |
1108 | 2115 __ movl(temp, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
2116 __ shrl(temp, shift_count); | |
2117 // have we resolved this bytecode? | |
2118 __ andl(temp, 0xFF); | |
2119 __ cmpl(temp, (int) bytecode()); | |
2120 __ jcc(Assembler::equal, resolved); | |
2121 } | |
0 | 2122 |
2123 // resolve first time through | |
2124 address entry; | |
2125 switch (bytecode()) { | |
2126 case Bytecodes::_getstatic: | |
2127 case Bytecodes::_putstatic: | |
2128 case Bytecodes::_getfield: | |
2129 case Bytecodes::_putfield: | |
2130 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2131 break; | |
2132 case Bytecodes::_invokevirtual: | |
2133 case Bytecodes::_invokespecial: | |
2134 case Bytecodes::_invokestatic: | |
2135 case Bytecodes::_invokeinterface: | |
2136 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2137 break; | |
1108 | 2138 case Bytecodes::_invokedynamic: |
2139 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); | |
2140 break; | |
1602 | 2141 case Bytecodes::_fast_aldc: |
2142 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2143 break; | |
2144 case Bytecodes::_fast_aldc_w: | |
2145 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2146 break; | |
0 | 2147 default: |
2148 ShouldNotReachHere(); | |
2149 break; | |
2150 } | |
2151 __ movl(temp, (int) bytecode()); | |
2152 __ call_VM(noreg, entry, temp); | |
2153 | |
2154 // Update registers with resolved info | |
1565 | 2155 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2156 if (result != noreg) | |
2157 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2158 __ bind(resolved); |
2159 } | |
2160 | |
2161 // The Rcache and index registers must be set before call | |
2162 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2163 Register cache, | |
2164 Register index, | |
2165 Register off, | |
2166 Register flags, | |
2167 bool is_static = false) { | |
2168 assert_different_registers(cache, index, flags, off); | |
2169 | |
2170 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2171 // Field offset | |
304 | 2172 __ movptr(off, Address(cache, index, Address::times_8, |
2173 in_bytes(cp_base_offset + | |
2174 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2175 // Flags |
2176 __ movl(flags, Address(cache, index, Address::times_8, | |
2177 in_bytes(cp_base_offset + | |
2178 ConstantPoolCacheEntry::flags_offset()))); | |
2179 | |
2180 // klass overwrite register | |
2181 if (is_static) { | |
304 | 2182 __ movptr(obj, Address(cache, index, Address::times_8, |
2183 in_bytes(cp_base_offset + | |
2184 ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2185 } |
2186 } | |
2187 | |
2188 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2189 Register method, | |
2190 Register itable_index, | |
2191 Register flags, | |
2192 bool is_invokevirtual, | |
1565 | 2193 bool is_invokevfinal, /*unused*/ |
2194 bool is_invokedynamic) { | |
0 | 2195 // setup registers |
2196 const Register cache = rcx; | |
2197 const Register index = rdx; | |
2198 assert_different_registers(method, flags); | |
2199 assert_different_registers(method, cache, index); | |
2200 assert_different_registers(itable_index, flags); | |
2201 assert_different_registers(itable_index, cache, index); | |
2202 // determine constant pool cache field offsets | |
2203 const int method_offset = in_bytes( | |
2204 constantPoolCacheOopDesc::base_offset() + | |
2205 (is_invokevirtual | |
2206 ? ConstantPoolCacheEntry::f2_offset() | |
2207 : ConstantPoolCacheEntry::f1_offset())); | |
2208 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2209 ConstantPoolCacheEntry::flags_offset()); | |
2210 // access constant pool cache fields | |
2211 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2212 ConstantPoolCacheEntry::f2_offset()); | |
2213 | |
1565 | 2214 if (byte_no == f1_oop) { |
2215 // Resolved f1_oop goes directly into 'method' register. | |
2216 assert(is_invokedynamic, ""); | |
2217 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2218 } else { | |
2219 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2220 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2221 } | |
0 | 2222 if (itable_index != noreg) { |
1565 | 2223 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2224 } |
1565 | 2225 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2226 } |
2227 | |
2228 | |
2229 // The registers cache and index expected to be set before call. | |
2230 // Correct values of the cache and index registers are preserved. | |
2231 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2232 bool is_static, bool has_tos) { | |
2233 // do the JVMTI work here to avoid disturbing the register state below | |
2234 // We use c_rarg registers here because we want to use the register used in | |
2235 // the call to the VM | |
2236 if (JvmtiExport::can_post_field_access()) { | |
2237 // Check to see if a field access watch has been set before we | |
2238 // take the time to call into the VM. | |
2239 Label L1; | |
2240 assert_different_registers(cache, index, rax); | |
2241 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2242 __ testl(rax, rax); | |
2243 __ jcc(Assembler::zero, L1); | |
2244 | |
2245 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2246 | |
2247 // cache entry pointer | |
304 | 2248 __ addptr(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2249 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2250 __ addptr(c_rarg2, c_rarg3); |
0 | 2251 if (is_static) { |
2252 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2253 } else { | |
304 | 2254 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2255 __ verify_oop(c_rarg1); |
2256 } | |
2257 // c_rarg1: object pointer or NULL | |
2258 // c_rarg2: cache entry pointer | |
2259 // c_rarg3: jvalue object on the stack | |
2260 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2261 InterpreterRuntime::post_field_access), | |
2262 c_rarg1, c_rarg2, c_rarg3); | |
2263 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2264 __ bind(L1); | |
2265 } | |
2266 } | |
2267 | |
2268 void TemplateTable::pop_and_check_object(Register r) { | |
2269 __ pop_ptr(r); | |
2270 __ null_check(r); // for field access must check obj. | |
2271 __ verify_oop(r); | |
2272 } | |
2273 | |
2274 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2275 transition(vtos, vtos); | |
2276 | |
2277 const Register cache = rcx; | |
2278 const Register index = rdx; | |
2279 const Register obj = c_rarg3; | |
2280 const Register off = rbx; | |
2281 const Register flags = rax; | |
2282 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2283 | |
1565 | 2284 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2285 jvmti_post_field_access(cache, index, is_static, false); |
2286 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2287 | |
2288 if (!is_static) { | |
2289 // obj is on the stack | |
2290 pop_and_check_object(obj); | |
2291 } | |
2292 | |
2293 const Address field(obj, off, Address::times_1); | |
2294 | |
2295 Label Done, notByte, notInt, notShort, notChar, | |
2296 notLong, notFloat, notObj, notDouble; | |
2297 | |
2298 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2299 assert(btos == 0, "change code, btos != 0"); | |
2300 | |
2301 __ andl(flags, 0x0F); | |
2302 __ jcc(Assembler::notZero, notByte); | |
2303 // btos | |
2304 __ load_signed_byte(rax, field); | |
2305 __ push(btos); | |
2306 // Rewrite bytecode to be faster | |
2307 if (!is_static) { | |
2308 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2309 } | |
2310 __ jmp(Done); | |
2311 | |
2312 __ bind(notByte); | |
2313 __ cmpl(flags, atos); | |
2314 __ jcc(Assembler::notEqual, notObj); | |
2315 // atos | |
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2316 __ load_heap_oop(rax, field); |
0 | 2317 __ push(atos); |
2318 if (!is_static) { | |
2319 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2320 } | |
2321 __ jmp(Done); | |
2322 | |
2323 __ bind(notObj); | |
2324 __ cmpl(flags, itos); | |
2325 __ jcc(Assembler::notEqual, notInt); | |
2326 // itos | |
2327 __ movl(rax, field); | |
2328 __ push(itos); | |
2329 // Rewrite bytecode to be faster | |
2330 if (!is_static) { | |
2331 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2332 } | |
2333 __ jmp(Done); | |
2334 | |
2335 __ bind(notInt); | |
2336 __ cmpl(flags, ctos); | |
2337 __ jcc(Assembler::notEqual, notChar); | |
2338 // ctos | |
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2339 __ load_unsigned_short(rax, field); |
0 | 2340 __ push(ctos); |
2341 // Rewrite bytecode to be faster | |
2342 if (!is_static) { | |
2343 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2344 } | |
2345 __ jmp(Done); | |
2346 | |
2347 __ bind(notChar); | |
2348 __ cmpl(flags, stos); | |
2349 __ jcc(Assembler::notEqual, notShort); | |
2350 // stos | |
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2351 __ load_signed_short(rax, field); |
0 | 2352 __ push(stos); |
2353 // Rewrite bytecode to be faster | |
2354 if (!is_static) { | |
2355 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2356 } | |
2357 __ jmp(Done); | |
2358 | |
2359 __ bind(notShort); | |
2360 __ cmpl(flags, ltos); | |
2361 __ jcc(Assembler::notEqual, notLong); | |
2362 // ltos | |
2363 __ movq(rax, field); | |
2364 __ push(ltos); | |
2365 // Rewrite bytecode to be faster | |
2366 if (!is_static) { | |
2367 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2368 } | |
2369 __ jmp(Done); | |
2370 | |
2371 __ bind(notLong); | |
2372 __ cmpl(flags, ftos); | |
2373 __ jcc(Assembler::notEqual, notFloat); | |
2374 // ftos | |
2375 __ movflt(xmm0, field); | |
2376 __ push(ftos); | |
2377 // Rewrite bytecode to be faster | |
2378 if (!is_static) { | |
2379 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2380 } | |
2381 __ jmp(Done); | |
2382 | |
2383 __ bind(notFloat); | |
2384 #ifdef ASSERT | |
2385 __ cmpl(flags, dtos); | |
2386 __ jcc(Assembler::notEqual, notDouble); | |
2387 #endif | |
2388 // dtos | |
2389 __ movdbl(xmm0, field); | |
2390 __ push(dtos); | |
2391 // Rewrite bytecode to be faster | |
2392 if (!is_static) { | |
2393 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2394 } | |
2395 #ifdef ASSERT | |
2396 __ jmp(Done); | |
2397 | |
2398 __ bind(notDouble); | |
2399 __ stop("Bad state"); | |
2400 #endif | |
2401 | |
2402 __ bind(Done); | |
2403 // [jk] not needed currently | |
2404 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2405 // Assembler::LoadStore)); | |
2406 } | |
2407 | |
2408 | |
2409 void TemplateTable::getfield(int byte_no) { | |
2410 getfield_or_static(byte_no, false); | |
2411 } | |
2412 | |
2413 void TemplateTable::getstatic(int byte_no) { | |
2414 getfield_or_static(byte_no, true); | |
2415 } | |
2416 | |
2417 // The registers cache and index expected to be set before call. | |
2418 // The function may destroy various registers, just not the cache and index registers. | |
2419 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2420 transition(vtos, vtos); | |
2421 | |
2422 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2423 | |
2424 if (JvmtiExport::can_post_field_modification()) { | |
2425 // Check to see if a field modification watch has been set before | |
2426 // we take the time to call into the VM. | |
2427 Label L1; | |
2428 assert_different_registers(cache, index, rax); | |
2429 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2430 __ testl(rax, rax); | |
2431 __ jcc(Assembler::zero, L1); | |
2432 | |
2433 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2434 | |
2435 if (is_static) { | |
2436 // Life is simple. Null out the object pointer. | |
2437 __ xorl(c_rarg1, c_rarg1); | |
2438 } else { | |
2439 // Life is harder. The stack holds the value on top, followed by | |
2440 // the object. We don't know the size of the value, though; it | |
2441 // could be one or two words depending on its type. As a result, | |
2442 // we must find the type to determine where the object is. | |
2443 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2444 Address::times_8, | |
2445 in_bytes(cp_base_offset + | |
2446 ConstantPoolCacheEntry::flags_offset()))); | |
2447 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
2448 // Make sure we don't need to mask rcx for tosBits after the | |
2449 // above shift | |
2450 ConstantPoolCacheEntry::verify_tosBits(); | |
304 | 2451 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2452 __ cmpl(c_rarg3, ltos); |
304 | 2453 __ cmovptr(Assembler::equal, |
2454 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2455 __ cmpl(c_rarg3, dtos); |
304 | 2456 __ cmovptr(Assembler::equal, |
2457 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2458 } |
2459 // cache entry pointer | |
304 | 2460 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2461 __ shll(rscratch1, LogBytesPerWord); |
304 | 2462 __ addptr(c_rarg2, rscratch1); |
0 | 2463 // object (tos) |
304 | 2464 __ mov(c_rarg3, rsp); |
0 | 2465 // c_rarg1: object pointer set up above (NULL if static) |
2466 // c_rarg2: cache entry pointer | |
2467 // c_rarg3: jvalue object on the stack | |
2468 __ call_VM(noreg, | |
2469 CAST_FROM_FN_PTR(address, | |
2470 InterpreterRuntime::post_field_modification), | |
2471 c_rarg1, c_rarg2, c_rarg3); | |
2472 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2473 __ bind(L1); | |
2474 } | |
2475 } | |
2476 | |
2477 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2478 transition(vtos, vtos); | |
2479 | |
2480 const Register cache = rcx; | |
2481 const Register index = rdx; | |
2482 const Register obj = rcx; | |
2483 const Register off = rbx; | |
2484 const Register flags = rax; | |
2485 const Register bc = c_rarg3; | |
2486 | |
1565 | 2487 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2488 jvmti_post_field_mod(cache, index, is_static); |
2489 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2490 | |
2491 // [jk] not needed currently | |
2492 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2493 // Assembler::StoreStore)); | |
2494 | |
2495 Label notVolatile, Done; | |
2496 __ movl(rdx, flags); | |
2497 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2498 __ andl(rdx, 0x1); | |
2499 | |
2500 // field address | |
2501 const Address field(obj, off, Address::times_1); | |
2502 | |
2503 Label notByte, notInt, notShort, notChar, | |
2504 notLong, notFloat, notObj, notDouble; | |
2505 | |
2506 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2507 | |
2508 assert(btos == 0, "change code, btos != 0"); | |
2509 __ andl(flags, 0x0f); | |
2510 __ jcc(Assembler::notZero, notByte); | |
2511 // btos | |
2512 __ pop(btos); | |
2513 if (!is_static) pop_and_check_object(obj); | |
2514 __ movb(field, rax); | |
2515 if (!is_static) { | |
2516 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx); | |
2517 } | |
2518 __ jmp(Done); | |
2519 | |
2520 __ bind(notByte); | |
2521 __ cmpl(flags, atos); | |
2522 __ jcc(Assembler::notEqual, notObj); | |
2523 // atos | |
2524 __ pop(atos); | |
2525 if (!is_static) pop_and_check_object(obj); | |
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2526 |
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2527 // Store into the field |
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2528 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2529 |
0 | 2530 if (!is_static) { |
2531 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx); | |
2532 } | |
2533 __ jmp(Done); | |
2534 | |
2535 __ bind(notObj); | |
2536 __ cmpl(flags, itos); | |
2537 __ jcc(Assembler::notEqual, notInt); | |
2538 // itos | |
2539 __ pop(itos); | |
2540 if (!is_static) pop_and_check_object(obj); | |
2541 __ movl(field, rax); | |
2542 if (!is_static) { | |
2543 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx); | |
2544 } | |
2545 __ jmp(Done); | |
2546 | |
2547 __ bind(notInt); | |
2548 __ cmpl(flags, ctos); | |
2549 __ jcc(Assembler::notEqual, notChar); | |
2550 // ctos | |
2551 __ pop(ctos); | |
2552 if (!is_static) pop_and_check_object(obj); | |
2553 __ movw(field, rax); | |
2554 if (!is_static) { | |
2555 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx); | |
2556 } | |
2557 __ jmp(Done); | |
2558 | |
2559 __ bind(notChar); | |
2560 __ cmpl(flags, stos); | |
2561 __ jcc(Assembler::notEqual, notShort); | |
2562 // stos | |
2563 __ pop(stos); | |
2564 if (!is_static) pop_and_check_object(obj); | |
2565 __ movw(field, rax); | |
2566 if (!is_static) { | |
2567 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx); | |
2568 } | |
2569 __ jmp(Done); | |
2570 | |
2571 __ bind(notShort); | |
2572 __ cmpl(flags, ltos); | |
2573 __ jcc(Assembler::notEqual, notLong); | |
2574 // ltos | |
2575 __ pop(ltos); | |
2576 if (!is_static) pop_and_check_object(obj); | |
2577 __ movq(field, rax); | |
2578 if (!is_static) { | |
2579 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx); | |
2580 } | |
2581 __ jmp(Done); | |
2582 | |
2583 __ bind(notLong); | |
2584 __ cmpl(flags, ftos); | |
2585 __ jcc(Assembler::notEqual, notFloat); | |
2586 // ftos | |
2587 __ pop(ftos); | |
2588 if (!is_static) pop_and_check_object(obj); | |
2589 __ movflt(field, xmm0); | |
2590 if (!is_static) { | |
2591 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx); | |
2592 } | |
2593 __ jmp(Done); | |
2594 | |
2595 __ bind(notFloat); | |
2596 #ifdef ASSERT | |
2597 __ cmpl(flags, dtos); | |
2598 __ jcc(Assembler::notEqual, notDouble); | |
2599 #endif | |
2600 // dtos | |
2601 __ pop(dtos); | |
2602 if (!is_static) pop_and_check_object(obj); | |
2603 __ movdbl(field, xmm0); | |
2604 if (!is_static) { | |
2605 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx); | |
2606 } | |
2607 | |
2608 #ifdef ASSERT | |
2609 __ jmp(Done); | |
2610 | |
2611 __ bind(notDouble); | |
2612 __ stop("Bad state"); | |
2613 #endif | |
2614 | |
2615 __ bind(Done); | |
2616 // Check for volatile store | |
2617 __ testl(rdx, rdx); | |
2618 __ jcc(Assembler::zero, notVolatile); | |
2619 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2620 Assembler::StoreStore)); | |
2621 | |
2622 __ bind(notVolatile); | |
2623 } | |
2624 | |
2625 void TemplateTable::putfield(int byte_no) { | |
2626 putfield_or_static(byte_no, false); | |
2627 } | |
2628 | |
2629 void TemplateTable::putstatic(int byte_no) { | |
2630 putfield_or_static(byte_no, true); | |
2631 } | |
2632 | |
2633 void TemplateTable::jvmti_post_fast_field_mod() { | |
2634 if (JvmtiExport::can_post_field_modification()) { | |
2635 // Check to see if a field modification watch has been set before | |
2636 // we take the time to call into the VM. | |
2637 Label L2; | |
2638 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2639 __ testl(c_rarg3, c_rarg3); | |
2640 __ jcc(Assembler::zero, L2); | |
2641 __ pop_ptr(rbx); // copy the object pointer from tos | |
2642 __ verify_oop(rbx); | |
2643 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2644 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2645 __ mov(c_rarg3, rsp); | |
0 | 2646 const Address field(c_rarg3, 0); |
2647 | |
2648 switch (bytecode()) { // load values into the jvalue object | |
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2649 case Bytecodes::_fast_aputfield: __ movq(field, rax); break; |
0 | 2650 case Bytecodes::_fast_lputfield: __ movq(field, rax); break; |
2651 case Bytecodes::_fast_iputfield: __ movl(field, rax); break; | |
2652 case Bytecodes::_fast_bputfield: __ movb(field, rax); break; | |
2653 case Bytecodes::_fast_sputfield: // fall through | |
2654 case Bytecodes::_fast_cputfield: __ movw(field, rax); break; | |
2655 case Bytecodes::_fast_fputfield: __ movflt(field, xmm0); break; | |
2656 case Bytecodes::_fast_dputfield: __ movdbl(field, xmm0); break; | |
2657 default: | |
2658 ShouldNotReachHere(); | |
2659 } | |
2660 | |
2661 // Save rax because call_VM() will clobber it, then use it for | |
2662 // JVMTI purposes | |
304 | 2663 __ push(rax); |
0 | 2664 // access constant pool cache entry |
2665 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2666 __ verify_oop(rbx); | |
2667 // rbx: object pointer copied above | |
2668 // c_rarg2: cache entry pointer | |
2669 // c_rarg3: jvalue object on the stack | |
2670 __ call_VM(noreg, | |
2671 CAST_FROM_FN_PTR(address, | |
2672 InterpreterRuntime::post_field_modification), | |
2673 rbx, c_rarg2, c_rarg3); | |
304 | 2674 __ pop(rax); // restore lower value |
2675 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2676 __ bind(L2); |
2677 } | |
2678 } | |
2679 | |
2680 void TemplateTable::fast_storefield(TosState state) { | |
2681 transition(state, vtos); | |
2682 | |
2683 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2684 | |
2685 jvmti_post_fast_field_mod(); | |
2686 | |
2687 // access constant pool cache | |
2688 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2689 | |
2690 // test for volatile with rdx | |
2691 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2692 in_bytes(base + | |
2693 ConstantPoolCacheEntry::flags_offset()))); | |
2694 | |
2695 // replace index with field offset from cache entry | |
304 | 2696 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2697 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2698 |
2699 // [jk] not needed currently | |
2700 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2701 // Assembler::StoreStore)); | |
2702 | |
2703 Label notVolatile; | |
2704 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2705 __ andl(rdx, 0x1); | |
2706 | |
2707 // Get object from stack | |
2708 pop_and_check_object(rcx); | |
2709 | |
2710 // field address | |
2711 const Address field(rcx, rbx, Address::times_1); | |
2712 | |
2713 // access field | |
2714 switch (bytecode()) { | |
2715 case Bytecodes::_fast_aputfield: | |
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2716 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2717 break; |
2718 case Bytecodes::_fast_lputfield: | |
2719 __ movq(field, rax); | |
2720 break; | |
2721 case Bytecodes::_fast_iputfield: | |
2722 __ movl(field, rax); | |
2723 break; | |
2724 case Bytecodes::_fast_bputfield: | |
2725 __ movb(field, rax); | |
2726 break; | |
2727 case Bytecodes::_fast_sputfield: | |
2728 // fall through | |
2729 case Bytecodes::_fast_cputfield: | |
2730 __ movw(field, rax); | |
2731 break; | |
2732 case Bytecodes::_fast_fputfield: | |
2733 __ movflt(field, xmm0); | |
2734 break; | |
2735 case Bytecodes::_fast_dputfield: | |
2736 __ movdbl(field, xmm0); | |
2737 break; | |
2738 default: | |
2739 ShouldNotReachHere(); | |
2740 } | |
2741 | |
2742 // Check for volatile store | |
2743 __ testl(rdx, rdx); | |
2744 __ jcc(Assembler::zero, notVolatile); | |
2745 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2746 Assembler::StoreStore)); | |
2747 __ bind(notVolatile); | |
2748 } | |
2749 | |
2750 | |
2751 void TemplateTable::fast_accessfield(TosState state) { | |
2752 transition(atos, state); | |
2753 | |
2754 // Do the JVMTI work here to avoid disturbing the register state below | |
2755 if (JvmtiExport::can_post_field_access()) { | |
2756 // Check to see if a field access watch has been set before we | |
2757 // take the time to call into the VM. | |
2758 Label L1; | |
2759 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2760 __ testl(rcx, rcx); | |
2761 __ jcc(Assembler::zero, L1); | |
2762 // access constant pool cache entry | |
2763 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2764 __ verify_oop(rax); |
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2765 __ push_ptr(rax); // save object pointer before call_VM() clobbers it |
304 | 2766 __ mov(c_rarg1, rax); |
0 | 2767 // c_rarg1: object pointer copied above |
2768 // c_rarg2: cache entry pointer | |
2769 __ call_VM(noreg, | |
2770 CAST_FROM_FN_PTR(address, | |
2771 InterpreterRuntime::post_field_access), | |
2772 c_rarg1, c_rarg2); | |
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2773 __ pop_ptr(rax); // restore object pointer |
0 | 2774 __ bind(L1); |
2775 } | |
2776 | |
2777 // access constant pool cache | |
2778 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2779 // replace index with field offset from cache entry | |
2780 // [jk] not needed currently | |
2781 // if (os::is_MP()) { | |
2782 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2783 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2784 // ConstantPoolCacheEntry::flags_offset()))); | |
2785 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2786 // __ andl(rdx, 0x1); | |
2787 // } | |
304 | 2788 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2789 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2790 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2791 |
2792 // rax: object | |
2793 __ verify_oop(rax); | |
2794 __ null_check(rax); | |
2795 Address field(rax, rbx, Address::times_1); | |
2796 | |
2797 // access field | |
2798 switch (bytecode()) { | |
2799 case Bytecodes::_fast_agetfield: | |
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2800 __ load_heap_oop(rax, field); |
0 | 2801 __ verify_oop(rax); |
2802 break; | |
2803 case Bytecodes::_fast_lgetfield: | |
2804 __ movq(rax, field); | |
2805 break; | |
2806 case Bytecodes::_fast_igetfield: | |
2807 __ movl(rax, field); | |
2808 break; | |
2809 case Bytecodes::_fast_bgetfield: | |
2810 __ movsbl(rax, field); | |
2811 break; | |
2812 case Bytecodes::_fast_sgetfield: | |
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2813 __ load_signed_short(rax, field); |
0 | 2814 break; |
2815 case Bytecodes::_fast_cgetfield: | |
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2816 __ load_unsigned_short(rax, field); |
0 | 2817 break; |
2818 case Bytecodes::_fast_fgetfield: | |
2819 __ movflt(xmm0, field); | |
2820 break; | |
2821 case Bytecodes::_fast_dgetfield: | |
2822 __ movdbl(xmm0, field); | |
2823 break; | |
2824 default: | |
2825 ShouldNotReachHere(); | |
2826 } | |
2827 // [jk] not needed currently | |
2828 // if (os::is_MP()) { | |
2829 // Label notVolatile; | |
2830 // __ testl(rdx, rdx); | |
2831 // __ jcc(Assembler::zero, notVolatile); | |
2832 // __ membar(Assembler::LoadLoad); | |
2833 // __ bind(notVolatile); | |
2834 //}; | |
2835 } | |
2836 | |
2837 void TemplateTable::fast_xaccess(TosState state) { | |
2838 transition(vtos, state); | |
2839 | |
2840 // get receiver | |
304 | 2841 __ movptr(rax, aaddress(0)); |
0 | 2842 // access constant pool cache |
2843 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2844 __ movptr(rbx, |
2845 Address(rcx, rdx, Address::times_8, | |
2846 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2847 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2848 // make sure exception is reported in correct bcp range (getfield is |
2849 // next instruction) | |
304 | 2850 __ increment(r13); |
0 | 2851 __ null_check(rax); |
2852 switch (state) { | |
2853 case itos: | |
2854 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2855 break; | |
2856 case atos: | |
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2857 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2858 __ verify_oop(rax); |
2859 break; | |
2860 case ftos: | |
2861 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2862 break; | |
2863 default: | |
2864 ShouldNotReachHere(); | |
2865 } | |
2866 | |
2867 // [jk] not needed currently | |
2868 // if (os::is_MP()) { | |
2869 // Label notVolatile; | |
2870 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
2871 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2872 // ConstantPoolCacheEntry::flags_offset()))); | |
2873 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2874 // __ testl(rdx, 0x1); | |
2875 // __ jcc(Assembler::zero, notVolatile); | |
2876 // __ membar(Assembler::LoadLoad); | |
2877 // __ bind(notVolatile); | |
2878 // } | |
2879 | |
304 | 2880 __ decrement(r13); |
0 | 2881 } |
2882 | |
2883 | |
2884 | |
2885 //----------------------------------------------------------------------------- | |
2886 // Calls | |
2887 | |
2888 void TemplateTable::count_calls(Register method, Register temp) { | |
2889 // implemented elsewhere | |
2890 ShouldNotReachHere(); | |
2891 } | |
2892 | |
1108 | 2893 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2894 // determine flags |
1108 | 2895 Bytecodes::Code code = bytecode(); |
0 | 2896 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
1108 | 2897 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2898 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2899 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
1108 | 2900 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2901 const bool receiver_null_check = is_invokespecial; |
2902 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2903 // setup registers & access constant pool cache | |
2904 const Register recv = rcx; | |
2905 const Register flags = rdx; | |
2906 assert_different_registers(method, index, recv, flags); | |
2907 | |
2908 // save 'interpreter return address' | |
2909 __ save_bcp(); | |
2910 | |
1565 | 2911 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2912 |
2913 // load receiver if needed (note: no return address pushed yet) | |
2914 if (load_receiver) { | |
1565 | 2915 assert(!is_invokedynamic, ""); |
0 | 2916 __ movl(recv, flags); |
2917 __ andl(recv, 0xFF); | |
1108 | 2918 Address recv_addr(rsp, recv, Address::times_8, -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2919 __ movptr(recv, recv_addr); |
2920 __ verify_oop(recv); | |
0 | 2921 } |
2922 | |
2923 // do null check if needed | |
2924 if (receiver_null_check) { | |
2925 __ null_check(recv); | |
2926 } | |
2927 | |
2928 if (save_flags) { | |
2929 __ movl(r13, flags); | |
2930 } | |
2931 | |
2932 // compute return type | |
2933 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2934 // Make sure we don't need to mask flags for tosBits after the above shift | |
2935 ConstantPoolCacheEntry::verify_tosBits(); | |
2936 // load return address | |
2937 { | |
1108 | 2938 address table_addr; |
2939 if (is_invokeinterface || is_invokedynamic) | |
2940 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); | |
2941 else | |
2942 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); | |
2943 ExternalAddress table(table_addr); | |
2944 __ lea(rscratch1, table); | |
2945 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr)); | |
0 | 2946 } |
2947 | |
2948 // push return address | |
304 | 2949 __ push(flags); |
0 | 2950 |
2951 // Restore flag field from the constant pool cache, and restore esi | |
2952 // for later null checks. r13 is the bytecode pointer | |
2953 if (save_flags) { | |
2954 __ movl(flags, r13); | |
2955 __ restore_bcp(); | |
2956 } | |
2957 } | |
2958 | |
2959 | |
2960 void TemplateTable::invokevirtual_helper(Register index, | |
2961 Register recv, | |
2962 Register flags) { | |
1783 | 2963 // Uses temporary registers rax, rdx |
2964 assert_different_registers(index, recv, rax, rdx); | |
0 | 2965 |
2966 // Test for an invoke of a final method | |
2967 Label notFinal; | |
2968 __ movl(rax, flags); | |
2969 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2970 __ jcc(Assembler::zero, notFinal); | |
2971 | |
2972 const Register method = index; // method must be rbx | |
2973 assert(method == rbx, | |
2974 "methodOop must be rbx for interpreter calling convention"); | |
2975 | |
2976 // do the call - the index is actually the method to call | |
2977 __ verify_oop(method); | |
2978 | |
2979 // It's final, need a null check here! | |
2980 __ null_check(recv); | |
2981 | |
2982 // profile this call | |
2983 __ profile_final_call(rax); | |
2984 | |
2985 __ jump_from_interpreted(method, rax); | |
2986 | |
2987 __ bind(notFinal); | |
2988 | |
2989 // get receiver klass | |
2990 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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2991 __ load_klass(rax, recv); |
0 | 2992 |
2993 __ verify_oop(rax); | |
2994 | |
2995 // profile this call | |
2996 __ profile_virtual_call(rax, r14, rdx); | |
2997 | |
2998 // get target methodOop & entry point | |
2999 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
3000 assert(vtableEntry::size() * wordSize == 8, | |
3001 "adjust the scaling in the code below"); | |
304 | 3002 __ movptr(method, Address(rax, index, |
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3003 Address::times_8, |
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3004 base + vtableEntry::method_offset_in_bytes())); |
304 | 3005 __ movptr(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
0 | 3006 __ jump_from_interpreted(method, rdx); |
3007 } | |
3008 | |
3009 | |
3010 void TemplateTable::invokevirtual(int byte_no) { | |
3011 transition(vtos, vtos); | |
1565 | 3012 assert(byte_no == f2_byte, "use this argument"); |
1108 | 3013 prepare_invoke(rbx, noreg, byte_no); |
0 | 3014 |
3015 // rbx: index | |
3016 // rcx: receiver | |
3017 // rdx: flags | |
3018 | |
3019 invokevirtual_helper(rbx, rcx, rdx); | |
3020 } | |
3021 | |
3022 | |
3023 void TemplateTable::invokespecial(int byte_no) { | |
3024 transition(vtos, vtos); | |
1565 | 3025 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3026 prepare_invoke(rbx, noreg, byte_no); |
0 | 3027 // do the call |
3028 __ verify_oop(rbx); | |
3029 __ profile_call(rax); | |
3030 __ jump_from_interpreted(rbx, rax); | |
3031 } | |
3032 | |
3033 | |
3034 void TemplateTable::invokestatic(int byte_no) { | |
3035 transition(vtos, vtos); | |
1565 | 3036 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3037 prepare_invoke(rbx, noreg, byte_no); |
0 | 3038 // do the call |
3039 __ verify_oop(rbx); | |
3040 __ profile_call(rax); | |
3041 __ jump_from_interpreted(rbx, rax); | |
3042 } | |
3043 | |
3044 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3045 transition(vtos, vtos); | |
1565 | 3046 assert(byte_no == f2_byte, "use this argument"); |
0 | 3047 __ stop("fast_invokevfinal not used on amd64"); |
3048 } | |
3049 | |
3050 void TemplateTable::invokeinterface(int byte_no) { | |
3051 transition(vtos, vtos); | |
1565 | 3052 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3053 prepare_invoke(rax, rbx, byte_no); |
0 | 3054 |
3055 // rax: Interface | |
3056 // rbx: index | |
3057 // rcx: receiver | |
3058 // rdx: flags | |
3059 | |
3060 // Special case of invokeinterface called for virtual method of | |
3061 // java.lang.Object. See cpCacheOop.cpp for details. | |
3062 // This code isn't produced by javac, but could be produced by | |
3063 // another compliant java compiler. | |
3064 Label notMethod; | |
3065 __ movl(r14, rdx); | |
3066 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3067 __ jcc(Assembler::zero, notMethod); | |
3068 | |
3069 invokevirtual_helper(rbx, rcx, rdx); | |
3070 __ bind(notMethod); | |
3071 | |
3072 // Get receiver klass into rdx - also a null check | |
3073 __ restore_locals(); // restore r14 | |
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3074 __ load_klass(rdx, rcx); |
0 | 3075 __ verify_oop(rdx); |
3076 | |
3077 // profile this call | |
3078 __ profile_virtual_call(rdx, r13, r14); | |
3079 | |
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3080 Label no_such_interface, no_such_method; |
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3081 |
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3082 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3083 rdx, rax, rbx, |
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3084 // outputs: method, scan temp. reg |
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3085 rbx, r13, |
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3086 no_such_interface); |
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3087 |
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3088 // rbx,: methodOop to call |
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3089 // rcx: receiver |
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3090 // Check for abstract method error |
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3091 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3092 // interpreter entry point and a conditional jump to it in case of a null |
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3093 // method. |
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3094 __ testptr(rbx, rbx); |
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3095 __ jcc(Assembler::zero, no_such_method); |
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3096 |
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3097 // do the call |
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3098 // rcx: receiver |
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3099 // rbx,: methodOop |
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3100 __ jump_from_interpreted(rbx, rdx); |
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3101 __ should_not_reach_here(); |
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3102 |
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3103 // exception handling code follows... |
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3104 // note: must restore interpreter registers to canonical |
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3105 // state for exception handling to work correctly! |
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3106 |
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3107 __ bind(no_such_method); |
0 | 3108 // throw exception |
623
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3109 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3110 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3111 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3112 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3113 // the call_VM checks for exception, so we should never return here. |
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3114 __ should_not_reach_here(); |
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3115 |
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3116 __ bind(no_such_interface); |
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3117 // throw exception |
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3118 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3119 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3120 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3121 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3122 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3123 // the call_VM checks for exception, so we should never return here. | |
3124 __ should_not_reach_here(); | |
623
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3125 return; |
0 | 3126 } |
3127 | |
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3128 void TemplateTable::invokedynamic(int byte_no) { |
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3129 transition(vtos, vtos); |
1565 | 3130 assert(byte_no == f1_oop, "use this argument"); |
726
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3131 |
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3132 if (!EnableInvokeDynamic) { |
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3133 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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3134 // The verifier will stop it. However, if we get past the verifier, |
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3135 // this will stop the thread in a reasonable way, without crashing the JVM. |
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3136 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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|
3137 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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3138 // the call_VM checks for exception, so we should never return here. |
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3139 __ should_not_reach_here(); |
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3140 return; |
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3141 } |
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3142 |
1565 | 3143 assert(byte_no == f1_oop, "use this argument"); |
1108 | 3144 prepare_invoke(rax, rbx, byte_no); |
3145 | |
3146 // rax: CallSite object (f1) | |
3147 // rbx: unused (f2) | |
3148 // rcx: receiver address | |
3149 // rdx: flags (unused) | |
3150 | |
1846 | 3151 Register rax_callsite = rax; |
3152 Register rcx_method_handle = rcx; | |
3153 | |
1108 | 3154 if (ProfileInterpreter) { |
3155 // %%% should make a type profile for any invokedynamic that takes a ref argument | |
3156 // profile this call | |
3157 __ profile_call(r13); | |
3158 } | |
3159 | |
1846 | 3160 __ load_heap_oop(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_dyn_CallSite::target_offset_in_bytes, rcx))); |
3161 __ null_check(rcx_method_handle); | |
1108 | 3162 __ prepare_to_jump_from_interpreted(); |
1846 | 3163 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
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3164 } |
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3165 |
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3166 |
0 | 3167 //----------------------------------------------------------------------------- |
3168 // Allocation | |
3169 | |
3170 void TemplateTable::_new() { | |
3171 transition(vtos, atos); | |
3172 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3173 Label slow_case; | |
3174 Label done; | |
3175 Label initialize_header; | |
3176 Label initialize_object; // including clearing the fields | |
3177 Label allocate_shared; | |
3178 | |
3179 __ get_cpool_and_tags(rsi, rax); | |
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3180 // Make sure the class we're about to instantiate has been resolved. |
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3181 // This is done before loading instanceKlass to be consistent with the order |
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3182 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
0 | 3183 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
3184 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
3185 JVM_CONSTANT_Class); | |
3186 __ jcc(Assembler::notEqual, slow_case); | |
3187 | |
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3188 // get instanceKlass |
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3189 __ movptr(rsi, Address(rsi, rdx, |
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3190 Address::times_8, sizeof(constantPoolOopDesc))); |
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3191 |
0 | 3192 // make sure klass is initialized & doesn't have finalizer |
3193 // make sure klass is fully initialized | |
3194 __ cmpl(Address(rsi, | |
3195 instanceKlass::init_state_offset_in_bytes() + | |
3196 sizeof(oopDesc)), | |
3197 instanceKlass::fully_initialized); | |
3198 __ jcc(Assembler::notEqual, slow_case); | |
3199 | |
3200 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3201 __ movl(rdx, | |
3202 Address(rsi, | |
3203 Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3204 // test to see if it has a finalizer or is malformed in some way | |
3205 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3206 __ jcc(Assembler::notZero, slow_case); | |
3207 | |
3208 // Allocate the instance | |
3209 // 1) Try to allocate in the TLAB | |
3210 // 2) if fail and the object is large allocate in the shared Eden | |
3211 // 3) if the above fails (or is not applicable), go to a slow case | |
3212 // (creates a new TLAB, etc.) | |
3213 | |
3214 const bool allow_shared_alloc = | |
3215 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3216 | |
3217 if (UseTLAB) { | |
304 | 3218 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3219 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3220 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3221 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3222 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3223 if (ZeroTLAB) { |
3224 // the fields have been already cleared | |
3225 __ jmp(initialize_header); | |
3226 } else { | |
3227 // initialize both the header and fields | |
3228 __ jmp(initialize_object); | |
3229 } | |
3230 } | |
3231 | |
3232 // Allocation in the shared Eden, if allowed. | |
3233 // | |
3234 // rdx: instance size in bytes | |
3235 if (allow_shared_alloc) { | |
3236 __ bind(allocate_shared); | |
3237 | |
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3238 ExternalAddress top((address)Universe::heap()->top_addr()); |
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3239 ExternalAddress end((address)Universe::heap()->end_addr()); |
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3240 |
0 | 3241 const Register RtopAddr = rscratch1; |
3242 const Register RendAddr = rscratch2; | |
3243 | |
3244 __ lea(RtopAddr, top); | |
3245 __ lea(RendAddr, end); | |
304 | 3246 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3247 |
3248 // For retries rax gets set by cmpxchgq | |
3249 Label retry; | |
3250 __ bind(retry); | |
304 | 3251 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3252 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3253 __ jcc(Assembler::above, slow_case); |
3254 | |
3255 // Compare rax with the top addr, and if still equal, store the new | |
3256 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3257 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3258 // | |
3259 // rax: object begin | |
3260 // rbx: object end | |
3261 // rdx: instance size in bytes | |
3262 if (os::is_MP()) { | |
3263 __ lock(); | |
3264 } | |
304 | 3265 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3266 |
3267 // if someone beat us on the allocation, try again, otherwise continue | |
3268 __ jcc(Assembler::notEqual, retry); | |
3269 } | |
3270 | |
3271 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3272 // The object is initialized before the header. If the object size is | |
3273 // zero, go directly to the header initialization. | |
3274 __ bind(initialize_object); | |
3275 __ decrementl(rdx, sizeof(oopDesc)); | |
3276 __ jcc(Assembler::zero, initialize_header); | |
3277 | |
3278 // Initialize object fields | |
3279 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3280 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3281 { | |
3282 Label loop; | |
3283 __ bind(loop); | |
3284 __ movq(Address(rax, rdx, Address::times_8, | |
3285 sizeof(oopDesc) - oopSize), | |
3286 rcx); | |
3287 __ decrementl(rdx); | |
3288 __ jcc(Assembler::notZero, loop); | |
3289 } | |
3290 | |
3291 // initialize object header only. | |
3292 __ bind(initialize_header); | |
3293 if (UseBiasedLocking) { | |
304 | 3294 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); |
3295 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); | |
0 | 3296 } else { |
3297 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3298 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3299 } | |
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3300 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
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3301 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
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3302 __ store_klass(rax, rsi); // store klass last |
1248
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3303 |
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3304 { |
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3305 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); |
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3306 // Trigger dtrace event for fastpath |
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3307 __ push(atos); // save the return value |
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3308 __ call_VM_leaf( |
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3309 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
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3310 __ pop(atos); // restore the return value |
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3311 |
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3312 } |
0 | 3313 __ jmp(done); |
3314 } | |
3315 | |
3316 | |
3317 // slow case | |
3318 __ bind(slow_case); | |
3319 __ get_constant_pool(c_rarg1); | |
3320 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3321 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3322 __ verify_oop(rax); | |
3323 | |
3324 // continue | |
3325 __ bind(done); | |
3326 } | |
3327 | |
3328 void TemplateTable::newarray() { | |
3329 transition(itos, atos); | |
3330 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3331 __ movl(c_rarg2, rax); | |
3332 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3333 c_rarg1, c_rarg2); | |
3334 } | |
3335 | |
3336 void TemplateTable::anewarray() { | |
3337 transition(itos, atos); | |
3338 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3339 __ get_constant_pool(c_rarg1); | |
3340 __ movl(c_rarg3, rax); | |
3341 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3342 c_rarg1, c_rarg2, c_rarg3); | |
3343 } | |
3344 | |
3345 void TemplateTable::arraylength() { | |
3346 transition(atos, itos); | |
3347 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3348 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3349 } | |
3350 | |
3351 void TemplateTable::checkcast() { | |
3352 transition(atos, atos); | |
3353 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3354 __ testptr(rax, rax); // object is in rax |
0 | 3355 __ jcc(Assembler::zero, is_null); |
3356 | |
3357 // Get cpool & tags index | |
3358 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3359 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3360 // See if bytecode has already been quicked | |
3361 __ cmpb(Address(rdx, rbx, | |
3362 Address::times_1, | |
3363 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3364 JVM_CONSTANT_Class); | |
3365 __ jcc(Assembler::equal, quicked); | |
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3366 __ push(atos); // save receiver for result, and for GC |
0 | 3367 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
3368 __ pop_ptr(rdx); // restore receiver | |
3369 __ jmpb(resolved); | |
3370 | |
3371 // Get superklass in rax and subklass in rbx | |
3372 __ bind(quicked); | |
304 | 3373 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3374 __ movptr(rax, Address(rcx, rbx, | |
0 | 3375 Address::times_8, sizeof(constantPoolOopDesc))); |
3376 | |
3377 __ bind(resolved); | |
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3378 __ load_klass(rbx, rdx); |
0 | 3379 |
3380 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3381 // Superklass in rax. Subklass in rbx. | |
3382 __ gen_subtype_check(rbx, ok_is_subtype); | |
3383 | |
3384 // Come here on failure | |
3385 __ push_ptr(rdx); | |
3386 // object is at TOS | |
3387 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3388 | |
3389 // Come here on success | |
3390 __ bind(ok_is_subtype); | |
304 | 3391 __ mov(rax, rdx); // Restore object in rdx |
0 | 3392 |
3393 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3394 if (ProfileInterpreter) { | |
3395 __ jmp(done); | |
3396 __ bind(is_null); | |
3397 __ profile_null_seen(rcx); | |
3398 } else { | |
3399 __ bind(is_null); // same as 'done' | |
3400 } | |
3401 __ bind(done); | |
3402 } | |
3403 | |
3404 void TemplateTable::instanceof() { | |
3405 transition(atos, itos); | |
3406 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3407 __ testptr(rax, rax); |
0 | 3408 __ jcc(Assembler::zero, is_null); |
3409 | |
3410 // Get cpool & tags index | |
3411 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3412 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3413 // See if bytecode has already been quicked | |
3414 __ cmpb(Address(rdx, rbx, | |
3415 Address::times_1, | |
3416 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3417 JVM_CONSTANT_Class); | |
3418 __ jcc(Assembler::equal, quicked); | |
3419 | |
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3420 __ push(atos); // save receiver for result, and for GC |
0 | 3421 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
3422 __ pop_ptr(rdx); // restore receiver | |
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3423 __ verify_oop(rdx); |
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3424 __ load_klass(rdx, rdx); |
0 | 3425 __ jmpb(resolved); |
3426 | |
3427 // Get superklass in rax and subklass in rdx | |
3428 __ bind(quicked); | |
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3429 __ load_klass(rdx, rax); |
304 | 3430 __ movptr(rax, Address(rcx, rbx, |
3431 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3432 |
3433 __ bind(resolved); | |
3434 | |
3435 // Generate subtype check. Blows rcx, rdi | |
3436 // Superklass in rax. Subklass in rdx. | |
3437 __ gen_subtype_check(rdx, ok_is_subtype); | |
3438 | |
3439 // Come here on failure | |
3440 __ xorl(rax, rax); | |
3441 __ jmpb(done); | |
3442 // Come here on success | |
3443 __ bind(ok_is_subtype); | |
3444 __ movl(rax, 1); | |
3445 | |
3446 // Collect counts on whether this test sees NULLs a lot or not. | |
3447 if (ProfileInterpreter) { | |
3448 __ jmp(done); | |
3449 __ bind(is_null); | |
3450 __ profile_null_seen(rcx); | |
3451 } else { | |
3452 __ bind(is_null); // same as 'done' | |
3453 } | |
3454 __ bind(done); | |
3455 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3456 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3457 } | |
3458 | |
3459 //----------------------------------------------------------------------------- | |
3460 // Breakpoints | |
3461 void TemplateTable::_breakpoint() { | |
3462 // Note: We get here even if we are single stepping.. | |
3463 // jbug inists on setting breakpoints at every bytecode | |
3464 // even if we are in single step mode. | |
3465 | |
3466 transition(vtos, vtos); | |
3467 | |
3468 // get the unpatched byte code | |
3469 __ get_method(c_rarg1); | |
3470 __ call_VM(noreg, | |
3471 CAST_FROM_FN_PTR(address, | |
3472 InterpreterRuntime::get_original_bytecode_at), | |
3473 c_rarg1, r13); | |
304 | 3474 __ mov(rbx, rax); |
0 | 3475 |
3476 // post the breakpoint event | |
3477 __ get_method(c_rarg1); | |
3478 __ call_VM(noreg, | |
3479 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3480 c_rarg1, r13); | |
3481 | |
3482 // complete the execution of original bytecode | |
3483 __ dispatch_only_normal(vtos); | |
3484 } | |
3485 | |
3486 //----------------------------------------------------------------------------- | |
3487 // Exceptions | |
3488 | |
3489 void TemplateTable::athrow() { | |
3490 transition(atos, vtos); | |
3491 __ null_check(rax); | |
3492 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3493 } | |
3494 | |
3495 //----------------------------------------------------------------------------- | |
3496 // Synchronization | |
3497 // | |
3498 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3499 // in the assembly code structure as well | |
3500 // | |
3501 // Stack layout: | |
3502 // | |
3503 // [expressions ] <--- rsp = expression stack top | |
3504 // .. | |
3505 // [expressions ] | |
3506 // [monitor entry] <--- monitor block top = expression stack bot | |
3507 // .. | |
3508 // [monitor entry] | |
3509 // [frame data ] <--- monitor block bot | |
3510 // ... | |
3511 // [saved rbp ] <--- rbp | |
3512 void TemplateTable::monitorenter() { | |
3513 transition(atos, vtos); | |
3514 | |
3515 // check for NULL object | |
3516 __ null_check(rax); | |
3517 | |
3518 const Address monitor_block_top( | |
3519 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3520 const Address monitor_block_bot( | |
3521 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3522 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3523 | |
3524 Label allocated; | |
3525 | |
3526 // initialize entry pointer | |
3527 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3528 | |
3529 // find a free slot in the monitor block (result in c_rarg1) | |
3530 { | |
3531 Label entry, loop, exit; | |
304 | 3532 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3533 // starting with top-most entry |
304 | 3534 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3535 // of monitor block |
3536 __ jmpb(entry); | |
3537 | |
3538 __ bind(loop); | |
3539 // check if current entry is used | |
304 | 3540 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3541 // if not used then remember entry in c_rarg1 |
304 | 3542 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3543 // check if current entry is for same object |
304 | 3544 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3545 // if same object then stop searching |
3546 __ jccb(Assembler::equal, exit); | |
3547 // otherwise advance to next entry | |
304 | 3548 __ addptr(c_rarg3, entry_size); |
0 | 3549 __ bind(entry); |
3550 // check if bottom reached | |
304 | 3551 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3552 // if not at bottom then check this entry |
3553 __ jcc(Assembler::notEqual, loop); | |
3554 __ bind(exit); | |
3555 } | |
3556 | |
304 | 3557 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3558 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3559 | |
3560 // allocate one if there's no free slot | |
3561 { | |
3562 Label entry, loop; | |
304 | 3563 // 1. compute new pointers // rsp: old expression stack top |
3564 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3565 __ subptr(rsp, entry_size); // move expression stack top | |
3566 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3567 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3568 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3569 __ jmp(entry); |
3570 // 2. move expression stack contents | |
3571 __ bind(loop); | |
304 | 3572 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3573 // word from old location | |
3574 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3575 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3576 __ bind(entry); |
304 | 3577 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3578 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3579 // copy next word | |
3580 } | |
3581 | |
3582 // call run-time routine | |
3583 // c_rarg1: points to monitor entry | |
3584 __ bind(allocated); | |
3585 | |
3586 // Increment bcp to point to the next bytecode, so exception | |
3587 // handling for async. exceptions work correctly. | |
3588 // The object has already been poped from the stack, so the | |
3589 // expression stack looks correct. | |
304 | 3590 __ increment(r13); |
0 | 3591 |
3592 // store object | |
304 | 3593 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3594 __ lock_object(c_rarg1); |
3595 | |
3596 // check to make sure this monitor doesn't cause stack overflow after locking | |
3597 __ save_bcp(); // in case of exception | |
3598 __ generate_stack_overflow_check(0); | |
3599 | |
3600 // The bcp has already been incremented. Just need to dispatch to | |
3601 // next instruction. | |
3602 __ dispatch_next(vtos); | |
3603 } | |
3604 | |
3605 | |
3606 void TemplateTable::monitorexit() { | |
3607 transition(atos, vtos); | |
3608 | |
3609 // check for NULL object | |
3610 __ null_check(rax); | |
3611 | |
3612 const Address monitor_block_top( | |
3613 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3614 const Address monitor_block_bot( | |
3615 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3616 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3617 | |
3618 Label found; | |
3619 | |
3620 // find matching slot | |
3621 { | |
3622 Label entry, loop; | |
304 | 3623 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3624 // starting with top-most entry |
304 | 3625 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3626 // of monitor block |
3627 __ jmpb(entry); | |
3628 | |
3629 __ bind(loop); | |
3630 // check if current entry is for same object | |
304 | 3631 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3632 // if same object then stop searching |
3633 __ jcc(Assembler::equal, found); | |
3634 // otherwise advance to next entry | |
304 | 3635 __ addptr(c_rarg1, entry_size); |
0 | 3636 __ bind(entry); |
3637 // check if bottom reached | |
304 | 3638 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3639 // if not at bottom then check this entry |
3640 __ jcc(Assembler::notEqual, loop); | |
3641 } | |
3642 | |
3643 // error handling. Unlocking was not block-structured | |
3644 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3645 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3646 __ should_not_reach_here(); | |
3647 | |
3648 // call run-time routine | |
3649 // rsi: points to monitor entry | |
3650 __ bind(found); | |
3651 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3652 __ unlock_object(c_rarg1); | |
3653 __ pop_ptr(rax); // discard object | |
3654 } | |
3655 | |
3656 | |
3657 // Wide instructions | |
3658 void TemplateTable::wide() { | |
3659 transition(vtos, vtos); | |
3660 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3661 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3662 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3663 // Note: the r13 increment step is part of the individual wide | |
3664 // bytecode implementations | |
3665 } | |
3666 | |
3667 | |
3668 // Multi arrays | |
3669 void TemplateTable::multianewarray() { | |
3670 transition(vtos, atos); | |
3671 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3672 // last dim is on top of stack; we want address of first one: | |
3673 // first_addr = last_addr + (ndims - 1) * wordSize | |
304 | 3674 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3675 call_VM(rax, |
3676 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3677 c_rarg1); | |
3678 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3679 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3680 } |
304 | 3681 #endif // !CC_INTERP |