Mercurial > hg > truffle
annotate src/cpu/x86/vm/c1_CodeStubs_x86.cpp @ 1917:f42a2f0c16bb
6996563: 6984311 changes forgot to update vmStructs.cpp for new field _operands
Summary: Add missing line to vmStructs. Also fix bug with class dumper.
Reviewed-by: twisti, kvn
author | jrose |
---|---|
date | Fri, 05 Nov 2010 12:18:30 -0700 |
parents | 07a218de38cb |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
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2 * Copyright (c) 1999, 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 |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_c1_CodeStubs_x86.cpp.incl" | |
27 | |
28 | |
29 #define __ ce->masm()-> | |
30 | |
31 float ConversionStub::float_zero = 0.0; | |
32 double ConversionStub::double_zero = 0.0; | |
33 | |
34 void ConversionStub::emit_code(LIR_Assembler* ce) { | |
35 __ bind(_entry); | |
36 assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub"); | |
37 | |
38 | |
39 if (input()->is_single_xmm()) { | |
40 __ comiss(input()->as_xmm_float_reg(), | |
41 ExternalAddress((address)&float_zero)); | |
42 } else if (input()->is_double_xmm()) { | |
43 __ comisd(input()->as_xmm_double_reg(), | |
44 ExternalAddress((address)&double_zero)); | |
45 } else { | |
304 | 46 LP64_ONLY(ShouldNotReachHere()); |
47 __ push(rax); | |
0 | 48 __ ftst(); |
49 __ fnstsw_ax(); | |
50 __ sahf(); | |
304 | 51 __ pop(rax); |
0 | 52 } |
53 | |
54 Label NaN, do_return; | |
55 __ jccb(Assembler::parity, NaN); | |
56 __ jccb(Assembler::below, do_return); | |
57 | |
58 // input is > 0 -> return maxInt | |
59 // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff | |
60 __ decrement(result()->as_register()); | |
61 __ jmpb(do_return); | |
62 | |
63 // input is NaN -> return 0 | |
64 __ bind(NaN); | |
304 | 65 __ xorptr(result()->as_register(), result()->as_register()); |
0 | 66 |
67 __ bind(do_return); | |
68 __ jmp(_continuation); | |
69 } | |
70 | |
71 void CounterOverflowStub::emit_code(LIR_Assembler* ce) { | |
72 __ bind(_entry); | |
1783 | 73 ce->store_parameter(_method->as_register(), 1); |
0 | 74 ce->store_parameter(_bci, 0); |
75 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id))); | |
76 ce->add_call_info_here(_info); | |
77 ce->verify_oop_map(_info); | |
78 __ jmp(_continuation); | |
79 } | |
80 | |
81 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, | |
82 bool throw_index_out_of_bounds_exception) | |
83 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) | |
84 , _index(index) | |
85 { | |
1819 | 86 assert(info != NULL, "must have info"); |
87 _info = new CodeEmitInfo(info); | |
0 | 88 } |
89 | |
90 | |
91 void RangeCheckStub::emit_code(LIR_Assembler* ce) { | |
92 __ bind(_entry); | |
93 // pass the array index on stack because all registers must be preserved | |
94 if (_index->is_cpu_register()) { | |
95 ce->store_parameter(_index->as_register(), 0); | |
96 } else { | |
97 ce->store_parameter(_index->as_jint(), 0); | |
98 } | |
99 Runtime1::StubID stub_id; | |
100 if (_throw_index_out_of_bounds_exception) { | |
101 stub_id = Runtime1::throw_index_exception_id; | |
102 } else { | |
103 stub_id = Runtime1::throw_range_check_failed_id; | |
104 } | |
105 __ call(RuntimeAddress(Runtime1::entry_for(stub_id))); | |
106 ce->add_call_info_here(_info); | |
107 debug_only(__ should_not_reach_here()); | |
108 } | |
109 | |
110 | |
111 void DivByZeroStub::emit_code(LIR_Assembler* ce) { | |
112 if (_offset != -1) { | |
113 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); | |
114 } | |
115 __ bind(_entry); | |
116 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_div0_exception_id))); | |
117 ce->add_call_info_here(_info); | |
118 debug_only(__ should_not_reach_here()); | |
119 } | |
120 | |
121 | |
122 // Implementation of NewInstanceStub | |
123 | |
124 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { | |
125 _result = result; | |
126 _klass = klass; | |
127 _klass_reg = klass_reg; | |
128 _info = new CodeEmitInfo(info); | |
129 assert(stub_id == Runtime1::new_instance_id || | |
130 stub_id == Runtime1::fast_new_instance_id || | |
131 stub_id == Runtime1::fast_new_instance_init_check_id, | |
132 "need new_instance id"); | |
133 _stub_id = stub_id; | |
134 } | |
135 | |
136 | |
137 void NewInstanceStub::emit_code(LIR_Assembler* ce) { | |
138 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
139 __ bind(_entry); | |
304 | 140 __ movptr(rdx, _klass_reg->as_register()); |
0 | 141 __ call(RuntimeAddress(Runtime1::entry_for(_stub_id))); |
142 ce->add_call_info_here(_info); | |
143 ce->verify_oop_map(_info); | |
144 assert(_result->as_register() == rax, "result must in rax,"); | |
145 __ jmp(_continuation); | |
146 } | |
147 | |
148 | |
149 // Implementation of NewTypeArrayStub | |
150 | |
151 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { | |
152 _klass_reg = klass_reg; | |
153 _length = length; | |
154 _result = result; | |
155 _info = new CodeEmitInfo(info); | |
156 } | |
157 | |
158 | |
159 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { | |
160 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
161 __ bind(_entry); | |
162 assert(_length->as_register() == rbx, "length must in rbx,"); | |
163 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx"); | |
164 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); | |
165 ce->add_call_info_here(_info); | |
166 ce->verify_oop_map(_info); | |
167 assert(_result->as_register() == rax, "result must in rax,"); | |
168 __ jmp(_continuation); | |
169 } | |
170 | |
171 | |
172 // Implementation of NewObjectArrayStub | |
173 | |
174 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { | |
175 _klass_reg = klass_reg; | |
176 _result = result; | |
177 _length = length; | |
178 _info = new CodeEmitInfo(info); | |
179 } | |
180 | |
181 | |
182 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { | |
183 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
184 __ bind(_entry); | |
185 assert(_length->as_register() == rbx, "length must in rbx,"); | |
186 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx"); | |
187 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); | |
188 ce->add_call_info_here(_info); | |
189 ce->verify_oop_map(_info); | |
190 assert(_result->as_register() == rax, "result must in rax,"); | |
191 __ jmp(_continuation); | |
192 } | |
193 | |
194 | |
195 // Implementation of MonitorAccessStubs | |
196 | |
197 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) | |
198 : MonitorAccessStub(obj_reg, lock_reg) | |
199 { | |
200 _info = new CodeEmitInfo(info); | |
201 } | |
202 | |
203 | |
204 void MonitorEnterStub::emit_code(LIR_Assembler* ce) { | |
205 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
206 __ bind(_entry); | |
207 ce->store_parameter(_obj_reg->as_register(), 1); | |
208 ce->store_parameter(_lock_reg->as_register(), 0); | |
209 Runtime1::StubID enter_id; | |
210 if (ce->compilation()->has_fpu_code()) { | |
211 enter_id = Runtime1::monitorenter_id; | |
212 } else { | |
213 enter_id = Runtime1::monitorenter_nofpu_id; | |
214 } | |
215 __ call(RuntimeAddress(Runtime1::entry_for(enter_id))); | |
216 ce->add_call_info_here(_info); | |
217 ce->verify_oop_map(_info); | |
218 __ jmp(_continuation); | |
219 } | |
220 | |
221 | |
222 void MonitorExitStub::emit_code(LIR_Assembler* ce) { | |
223 __ bind(_entry); | |
224 if (_compute_lock) { | |
225 // lock_reg was destroyed by fast unlocking attempt => recompute it | |
226 ce->monitor_address(_monitor_ix, _lock_reg); | |
227 } | |
228 ce->store_parameter(_lock_reg->as_register(), 0); | |
229 // note: non-blocking leaf routine => no call info needed | |
230 Runtime1::StubID exit_id; | |
231 if (ce->compilation()->has_fpu_code()) { | |
232 exit_id = Runtime1::monitorexit_id; | |
233 } else { | |
234 exit_id = Runtime1::monitorexit_nofpu_id; | |
235 } | |
236 __ call(RuntimeAddress(Runtime1::entry_for(exit_id))); | |
237 __ jmp(_continuation); | |
238 } | |
239 | |
240 | |
241 // Implementation of patching: | |
242 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) | |
243 // - Replace original code with a call to the stub | |
244 // At Runtime: | |
245 // - call to stub, jump to runtime | |
246 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) | |
247 // - in runtime: after initializing class, restore original code, reexecute instruction | |
248 | |
249 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; | |
250 | |
251 void PatchingStub::align_patch_site(MacroAssembler* masm) { | |
252 // We're patching a 5-7 byte instruction on intel and we need to | |
253 // make sure that we don't see a piece of the instruction. It | |
254 // appears mostly impossible on Intel to simply invalidate other | |
255 // processors caches and since they may do aggressive prefetch it's | |
256 // very hard to make a guess about what code might be in the icache. | |
257 // Force the instruction to be double word aligned so that it | |
258 // doesn't span a cache line. | |
259 masm->align(round_to(NativeGeneralJump::instruction_size, wordSize)); | |
260 } | |
261 | |
262 void PatchingStub::emit_code(LIR_Assembler* ce) { | |
263 assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call"); | |
264 | |
265 Label call_patch; | |
266 | |
267 // static field accesses have special semantics while the class | |
268 // initializer is being run so we emit a test which can be used to | |
269 // check that this code is being executed by the initializing | |
270 // thread. | |
271 address being_initialized_entry = __ pc(); | |
272 if (CommentedAssembly) { | |
273 __ block_comment(" patch template"); | |
274 } | |
275 if (_id == load_klass_id) { | |
276 // produce a copy of the load klass instruction for use by the being initialized case | |
277 address start = __ pc(); | |
278 jobject o = NULL; | |
279 __ movoop(_obj, o); | |
280 #ifdef ASSERT | |
281 for (int i = 0; i < _bytes_to_copy; i++) { | |
282 address ptr = (address)(_pc_start + i); | |
283 int a_byte = (*ptr) & 0xFF; | |
284 assert(a_byte == *start++, "should be the same code"); | |
285 } | |
286 #endif | |
287 } else { | |
288 // make a copy the code which is going to be patched. | |
289 for ( int i = 0; i < _bytes_to_copy; i++) { | |
290 address ptr = (address)(_pc_start + i); | |
291 int a_byte = (*ptr) & 0xFF; | |
292 __ a_byte (a_byte); | |
293 *ptr = 0x90; // make the site look like a nop | |
294 } | |
295 } | |
296 | |
297 address end_of_patch = __ pc(); | |
298 int bytes_to_skip = 0; | |
299 if (_id == load_klass_id) { | |
300 int offset = __ offset(); | |
301 if (CommentedAssembly) { | |
302 __ block_comment(" being_initialized check"); | |
303 } | |
304 assert(_obj != noreg, "must be a valid register"); | |
305 Register tmp = rax; | |
306 if (_obj == tmp) tmp = rbx; | |
304 | 307 __ push(tmp); |
0 | 308 __ get_thread(tmp); |
304 | 309 __ cmpptr(tmp, Address(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc))); |
310 __ pop(tmp); | |
0 | 311 __ jcc(Assembler::notEqual, call_patch); |
312 | |
313 // access_field patches may execute the patched code before it's | |
314 // copied back into place so we need to jump back into the main | |
315 // code of the nmethod to continue execution. | |
316 __ jmp(_patch_site_continuation); | |
317 | |
318 // make sure this extra code gets skipped | |
319 bytes_to_skip += __ offset() - offset; | |
320 } | |
321 if (CommentedAssembly) { | |
322 __ block_comment("patch data encoded as movl"); | |
323 } | |
324 // Now emit the patch record telling the runtime how to find the | |
325 // pieces of the patch. We only need 3 bytes but for readability of | |
326 // the disassembly we make the data look like a movl reg, imm32, | |
327 // which requires 5 bytes | |
328 int sizeof_patch_record = 5; | |
329 bytes_to_skip += sizeof_patch_record; | |
330 | |
331 // emit the offsets needed to find the code to patch | |
332 int being_initialized_entry_offset = __ pc() - being_initialized_entry + sizeof_patch_record; | |
333 | |
334 __ a_byte(0xB8); | |
335 __ a_byte(0); | |
336 __ a_byte(being_initialized_entry_offset); | |
337 __ a_byte(bytes_to_skip); | |
338 __ a_byte(_bytes_to_copy); | |
339 address patch_info_pc = __ pc(); | |
340 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info"); | |
341 | |
342 address entry = __ pc(); | |
343 NativeGeneralJump::insert_unconditional((address)_pc_start, entry); | |
344 address target = NULL; | |
345 switch (_id) { | |
346 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break; | |
347 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break; | |
348 default: ShouldNotReachHere(); | |
349 } | |
350 __ bind(call_patch); | |
351 | |
352 if (CommentedAssembly) { | |
353 __ block_comment("patch entry point"); | |
354 } | |
355 __ call(RuntimeAddress(target)); | |
356 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change"); | |
357 ce->add_call_info_here(_info); | |
358 int jmp_off = __ offset(); | |
359 __ jmp(_patch_site_entry); | |
360 // Add enough nops so deoptimization can overwrite the jmp above with a call | |
361 // and not destroy the world. | |
362 for (int j = __ offset() ; j < jmp_off + 5 ; j++ ) { | |
363 __ nop(); | |
364 } | |
365 if (_id == load_klass_id) { | |
366 CodeSection* cs = __ code_section(); | |
367 RelocIterator iter(cs, (address)_pc_start, (address)(_pc_start + 1)); | |
368 relocInfo::change_reloc_info_for_address(&iter, (address) _pc_start, relocInfo::oop_type, relocInfo::none); | |
369 } | |
370 } | |
371 | |
372 | |
1295 | 373 void DeoptimizeStub::emit_code(LIR_Assembler* ce) { |
374 __ bind(_entry); | |
375 __ call(RuntimeAddress(SharedRuntime::deopt_blob()->unpack_with_reexecution())); | |
376 ce->add_call_info_here(_info); | |
377 debug_only(__ should_not_reach_here()); | |
378 } | |
379 | |
380 | |
0 | 381 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { |
382 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); | |
383 __ bind(_entry); | |
384 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id))); | |
385 ce->add_call_info_here(_info); | |
386 debug_only(__ should_not_reach_here()); | |
387 } | |
388 | |
389 | |
390 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { | |
391 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
392 | |
393 __ bind(_entry); | |
394 // pass the object on stack because all registers must be preserved | |
395 if (_obj->is_cpu_register()) { | |
396 ce->store_parameter(_obj->as_register(), 0); | |
397 } | |
398 __ call(RuntimeAddress(Runtime1::entry_for(_stub))); | |
399 ce->add_call_info_here(_info); | |
400 debug_only(__ should_not_reach_here()); | |
401 } | |
402 | |
403 | |
404 ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info): | |
405 _info(info) { | |
406 } | |
407 | |
408 | |
409 void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) { | |
410 assert(__ rsp_offset() == 0, "frame size should be fixed"); | |
411 __ bind(_entry); | |
412 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_array_store_exception_id))); | |
413 ce->add_call_info_here(_info); | |
414 debug_only(__ should_not_reach_here()); | |
415 } | |
416 | |
417 | |
418 void ArrayCopyStub::emit_code(LIR_Assembler* ce) { | |
419 //---------------slow case: call to native----------------- | |
420 __ bind(_entry); | |
421 // Figure out where the args should go | |
422 // This should really convert the IntrinsicID to the methodOop and signature | |
423 // but I don't know how to do that. | |
424 // | |
425 VMRegPair args[5]; | |
426 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; | |
427 SharedRuntime::java_calling_convention(signature, args, 5, true); | |
428 | |
429 // push parameters | |
430 // (src, src_pos, dest, destPos, length) | |
431 Register r[5]; | |
432 r[0] = src()->as_register(); | |
433 r[1] = src_pos()->as_register(); | |
434 r[2] = dst()->as_register(); | |
435 r[3] = dst_pos()->as_register(); | |
436 r[4] = length()->as_register(); | |
437 | |
438 // next registers will get stored on the stack | |
439 for (int i = 0; i < 5 ; i++ ) { | |
440 VMReg r_1 = args[i].first(); | |
441 if (r_1->is_stack()) { | |
442 int st_off = r_1->reg2stack() * wordSize; | |
304 | 443 __ movptr (Address(rsp, st_off), r[i]); |
0 | 444 } else { |
445 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); | |
446 } | |
447 } | |
448 | |
449 ce->align_call(lir_static_call); | |
450 | |
451 ce->emit_static_call_stub(); | |
452 AddressLiteral resolve(SharedRuntime::get_resolve_static_call_stub(), | |
453 relocInfo::static_call_type); | |
454 __ call(resolve); | |
455 ce->add_call_info_here(info()); | |
456 | |
457 #ifndef PRODUCT | |
304 | 458 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); |
0 | 459 #endif |
460 | |
461 __ jmp(_continuation); | |
462 } | |
463 | |
342 | 464 ///////////////////////////////////////////////////////////////////////////// |
465 #ifndef SERIALGC | |
466 | |
467 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { | |
468 | |
469 // At this point we know that marking is in progress | |
470 | |
471 __ bind(_entry); | |
472 assert(pre_val()->is_register(), "Precondition."); | |
473 | |
474 Register pre_val_reg = pre_val()->as_register(); | |
475 | |
476 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false); | |
477 | |
362 | 478 __ cmpptr(pre_val_reg, (int32_t) NULL_WORD); |
342 | 479 __ jcc(Assembler::equal, _continuation); |
480 ce->store_parameter(pre_val()->as_register(), 0); | |
481 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id))); | |
482 __ jmp(_continuation); | |
483 | |
484 } | |
485 | |
486 jbyte* G1PostBarrierStub::_byte_map_base = NULL; | |
487 | |
488 jbyte* G1PostBarrierStub::byte_map_base_slow() { | |
489 BarrierSet* bs = Universe::heap()->barrier_set(); | |
490 assert(bs->is_a(BarrierSet::G1SATBCTLogging), | |
491 "Must be if we're using this."); | |
492 return ((G1SATBCardTableModRefBS*)bs)->byte_map_base; | |
493 } | |
494 | |
495 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { | |
496 __ bind(_entry); | |
497 assert(addr()->is_register(), "Precondition."); | |
498 assert(new_val()->is_register(), "Precondition."); | |
499 Register new_val_reg = new_val()->as_register(); | |
362 | 500 __ cmpptr(new_val_reg, (int32_t) NULL_WORD); |
342 | 501 __ jcc(Assembler::equal, _continuation); |
1873 | 502 ce->store_parameter(addr()->as_pointer_register(), 0); |
342 | 503 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id))); |
504 __ jmp(_continuation); | |
505 } | |
506 | |
507 #endif // SERIALGC | |
508 ///////////////////////////////////////////////////////////////////////////// | |
0 | 509 |
510 #undef __ |