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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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