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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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377 | 377 |
378 bool LCodeGen::GenerateJumpTable() { | 378 bool LCodeGen::GenerateJumpTable() { |
379 Label needs_frame; | 379 Label needs_frame; |
380 if (jump_table_.length() > 0) { | 380 if (jump_table_.length() > 0) { |
381 Comment(";;; -------------------- Jump table --------------------"); | 381 Comment(";;; -------------------- Jump table --------------------"); |
382 } | 382 } |
383 for (int i = 0; i < jump_table_.length(); i++) { | 383 for (int i = 0; i < jump_table_.length(); i++) { |
384 Deoptimizer::JumpTableEntry* table_entry = &jump_table_[i]; | 384 Deoptimizer::JumpTableEntry* table_entry = &jump_table_[i]; |
385 __ bind(&table_entry->label); | 385 __ bind(&table_entry->label); |
386 Address entry = table_entry->address; | 386 Address entry = table_entry->address; |
387 DeoptComment(table_entry->reason); | 387 DeoptComment(table_entry->deopt_info); |
388 if (table_entry->needs_frame) { | 388 if (table_entry->needs_frame) { |
389 DCHECK(!info()->saves_caller_doubles()); | 389 DCHECK(!info()->saves_caller_doubles()); |
390 __ push(Immediate(ExternalReference::ForDeoptEntry(entry))); | 390 __ push(Immediate(ExternalReference::ForDeoptEntry(entry))); |
391 if (needs_frame.is_bound()) { | 391 if (needs_frame.is_bound()) { |
392 __ jmp(&needs_frame); | 392 __ jmp(&needs_frame); |
393 } else { | 393 } else { |
394 __ bind(&needs_frame); | 394 __ bind(&needs_frame); |
395 __ push(MemOperand(ebp, StandardFrameConstants::kContextOffset)); | 395 __ push(MemOperand(ebp, StandardFrameConstants::kContextOffset)); |
396 // This variant of deopt can only be used with stubs. Since we don't | 396 // This variant of deopt can only be used with stubs. Since we don't |
397 // have a function pointer to install in the stack frame that we're | 397 // have a function pointer to install in the stack frame that we're |
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854 __ popfd(); | 854 __ popfd(); |
855 } | 855 } |
856 | 856 |
857 if (info()->ShouldTrapOnDeopt()) { | 857 if (info()->ShouldTrapOnDeopt()) { |
858 Label done; | 858 Label done; |
859 if (cc != no_condition) __ j(NegateCondition(cc), &done, Label::kNear); | 859 if (cc != no_condition) __ j(NegateCondition(cc), &done, Label::kNear); |
860 __ int3(); | 860 __ int3(); |
861 __ bind(&done); | 861 __ bind(&done); |
862 } | 862 } |
863 | 863 |
864 Deoptimizer::Reason reason(instr->hydrogen_value()->position().raw(), | 864 Deoptimizer::DeoptInfo deopt_info(instr->hydrogen_value()->position().raw(), |
865 instr->Mnemonic(), deopt_reason); | 865 instr->Mnemonic(), deopt_reason); |
866 DCHECK(info()->IsStub() || frame_is_built_); | 866 DCHECK(info()->IsStub() || frame_is_built_); |
867 if (cc == no_condition && frame_is_built_) { | 867 if (cc == no_condition && frame_is_built_) { |
868 DeoptComment(reason); | 868 DeoptComment(deopt_info); |
869 __ call(entry, RelocInfo::RUNTIME_ENTRY); | 869 __ call(entry, RelocInfo::RUNTIME_ENTRY); |
870 } else { | 870 } else { |
871 Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type, | 871 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, |
872 !frame_is_built_); | 872 !frame_is_built_); |
873 // We often have several deopts to the same entry, reuse the last | 873 // We often have several deopts to the same entry, reuse the last |
874 // jump entry if this is the case. | 874 // jump entry if this is the case. |
875 if (jump_table_.is_empty() || | 875 if (jump_table_.is_empty() || |
876 !table_entry.IsEquivalentTo(jump_table_.last())) { | 876 !table_entry.IsEquivalentTo(jump_table_.last())) { |
877 jump_table_.Add(table_entry, zone()); | 877 jump_table_.Add(table_entry, zone()); |
878 } | 878 } |
879 if (cc == no_condition) { | 879 if (cc == no_condition) { |
880 __ jmp(&jump_table_.last().label); | 880 __ jmp(&jump_table_.last().label); |
881 } else { | 881 } else { |
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5772 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5772 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5773 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5773 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5774 } | 5774 } |
5775 | 5775 |
5776 | 5776 |
5777 #undef __ | 5777 #undef __ |
5778 | 5778 |
5779 } } // namespace v8::internal | 5779 } } // namespace v8::internal |
5780 | 5780 |
5781 #endif // V8_TARGET_ARCH_IA32 | 5781 #endif // V8_TARGET_ARCH_IA32 |
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