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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_X64 | 7 #if V8_TARGET_ARCH_X64 |
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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297 | 297 |
298 bool LCodeGen::GenerateJumpTable() { | 298 bool LCodeGen::GenerateJumpTable() { |
299 Label needs_frame; | 299 Label needs_frame; |
300 if (jump_table_.length() > 0) { | 300 if (jump_table_.length() > 0) { |
301 Comment(";;; -------------------- Jump table --------------------"); | 301 Comment(";;; -------------------- Jump table --------------------"); |
302 } | 302 } |
303 for (int i = 0; i < jump_table_.length(); i++) { | 303 for (int i = 0; i < jump_table_.length(); i++) { |
304 Deoptimizer::JumpTableEntry* table_entry = &jump_table_[i]; | 304 Deoptimizer::JumpTableEntry* table_entry = &jump_table_[i]; |
305 __ bind(&table_entry->label); | 305 __ bind(&table_entry->label); |
306 Address entry = table_entry->address; | 306 Address entry = table_entry->address; |
307 DeoptComment(table_entry->reason); | 307 DeoptComment(table_entry->deopt_info); |
308 if (table_entry->needs_frame) { | 308 if (table_entry->needs_frame) { |
309 DCHECK(!info()->saves_caller_doubles()); | 309 DCHECK(!info()->saves_caller_doubles()); |
310 __ Move(kScratchRegister, ExternalReference::ForDeoptEntry(entry)); | 310 __ Move(kScratchRegister, ExternalReference::ForDeoptEntry(entry)); |
311 if (needs_frame.is_bound()) { | 311 if (needs_frame.is_bound()) { |
312 __ jmp(&needs_frame); | 312 __ jmp(&needs_frame); |
313 } else { | 313 } else { |
314 __ bind(&needs_frame); | 314 __ bind(&needs_frame); |
315 __ movp(rsi, MemOperand(rbp, StandardFrameConstants::kContextOffset)); | 315 __ movp(rsi, MemOperand(rbp, StandardFrameConstants::kContextOffset)); |
316 __ pushq(rbp); | 316 __ pushq(rbp); |
317 __ movp(rbp, rsp); | 317 __ movp(rbp, rsp); |
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761 | 761 |
762 if (info()->ShouldTrapOnDeopt()) { | 762 if (info()->ShouldTrapOnDeopt()) { |
763 Label done; | 763 Label done; |
764 if (cc != no_condition) { | 764 if (cc != no_condition) { |
765 __ j(NegateCondition(cc), &done, Label::kNear); | 765 __ j(NegateCondition(cc), &done, Label::kNear); |
766 } | 766 } |
767 __ int3(); | 767 __ int3(); |
768 __ bind(&done); | 768 __ bind(&done); |
769 } | 769 } |
770 | 770 |
771 Deoptimizer::Reason reason(instr->hydrogen_value()->position().raw(), | 771 Deoptimizer::DeoptInfo deopt_info(instr->hydrogen_value()->position().raw(), |
772 instr->Mnemonic(), deopt_reason); | 772 instr->Mnemonic(), deopt_reason); |
773 DCHECK(info()->IsStub() || frame_is_built_); | 773 DCHECK(info()->IsStub() || frame_is_built_); |
774 // Go through jump table if we need to handle condition, build frame, or | 774 // Go through jump table if we need to handle condition, build frame, or |
775 // restore caller doubles. | 775 // restore caller doubles. |
776 if (cc == no_condition && frame_is_built_ && | 776 if (cc == no_condition && frame_is_built_ && |
777 !info()->saves_caller_doubles()) { | 777 !info()->saves_caller_doubles()) { |
778 DeoptComment(reason); | 778 DeoptComment(deopt_info); |
779 __ call(entry, RelocInfo::RUNTIME_ENTRY); | 779 __ call(entry, RelocInfo::RUNTIME_ENTRY); |
780 } else { | 780 } else { |
781 Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type, | 781 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, |
782 !frame_is_built_); | 782 !frame_is_built_); |
783 // We often have several deopts to the same entry, reuse the last | 783 // We often have several deopts to the same entry, reuse the last |
784 // jump entry if this is the case. | 784 // jump entry if this is the case. |
785 if (jump_table_.is_empty() || | 785 if (jump_table_.is_empty() || |
786 !table_entry.IsEquivalentTo(jump_table_.last())) { | 786 !table_entry.IsEquivalentTo(jump_table_.last())) { |
787 jump_table_.Add(table_entry, zone()); | 787 jump_table_.Add(table_entry, zone()); |
788 } | 788 } |
789 if (cc == no_condition) { | 789 if (cc == no_condition) { |
790 __ jmp(&jump_table_.last().label); | 790 __ jmp(&jump_table_.last().label); |
791 } else { | 791 } else { |
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5930 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5930 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5931 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5931 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5932 } | 5932 } |
5933 | 5933 |
5934 | 5934 |
5935 #undef __ | 5935 #undef __ |
5936 | 5936 |
5937 } } // namespace v8::internal | 5937 } } // namespace v8::internal |
5938 | 5938 |
5939 #endif // V8_TARGET_ARCH_X64 | 5939 #endif // V8_TARGET_ARCH_X64 |
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