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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 #if V8_TARGET_ARCH_X87 | 5 #if V8_TARGET_ARCH_X87 |
6 | 6 |
7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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154 | 154 |
155 info()->set_prologue_offset(masm_->pc_offset()); | 155 info()->set_prologue_offset(masm_->pc_offset()); |
156 if (NeedsEagerFrame()) { | 156 if (NeedsEagerFrame()) { |
157 DCHECK(!frame_is_built_); | 157 DCHECK(!frame_is_built_); |
158 frame_is_built_ = true; | 158 frame_is_built_ = true; |
159 if (info()->IsStub()) { | 159 if (info()->IsStub()) { |
160 __ StubPrologue(); | 160 __ StubPrologue(); |
161 } else { | 161 } else { |
162 __ Prologue(info()->IsCodePreAgingActive()); | 162 __ Prologue(info()->IsCodePreAgingActive()); |
163 } | 163 } |
164 info()->AddNoFrameRange(0, masm_->pc_offset()); | |
165 } | 164 } |
166 | 165 |
167 if (info()->IsOptimizing() && | 166 if (info()->IsOptimizing() && |
168 dynamic_frame_alignment_ && | 167 dynamic_frame_alignment_ && |
169 FLAG_debug_code) { | 168 FLAG_debug_code) { |
170 __ test(esp, Immediate(kPointerSize)); | 169 __ test(esp, Immediate(kPointerSize)); |
171 __ Assert(zero, kFrameIsExpectedToBeAligned); | 170 __ Assert(zero, kFrameIsExpectedToBeAligned); |
172 } | 171 } |
173 | 172 |
174 // Reserve space for the stack slots needed by the code. | 173 // Reserve space for the stack slots needed by the code. |
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2975 // safe to write to the context register. | 2974 // safe to write to the context register. |
2976 __ push(eax); | 2975 __ push(eax); |
2977 __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); | 2976 __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
2978 __ CallRuntime(Runtime::kTraceExit, 1); | 2977 __ CallRuntime(Runtime::kTraceExit, 1); |
2979 } | 2978 } |
2980 if (dynamic_frame_alignment_) { | 2979 if (dynamic_frame_alignment_) { |
2981 // Fetch the state of the dynamic frame alignment. | 2980 // Fetch the state of the dynamic frame alignment. |
2982 __ mov(edx, Operand(ebp, | 2981 __ mov(edx, Operand(ebp, |
2983 JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); | 2982 JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); |
2984 } | 2983 } |
2985 int no_frame_start = -1; | |
2986 if (NeedsEagerFrame()) { | 2984 if (NeedsEagerFrame()) { |
2987 __ mov(esp, ebp); | 2985 __ mov(esp, ebp); |
2988 __ pop(ebp); | 2986 __ pop(ebp); |
2989 no_frame_start = masm_->pc_offset(); | |
2990 } | 2987 } |
2991 if (dynamic_frame_alignment_) { | 2988 if (dynamic_frame_alignment_) { |
2992 Label no_padding; | 2989 Label no_padding; |
2993 __ cmp(edx, Immediate(kNoAlignmentPadding)); | 2990 __ cmp(edx, Immediate(kNoAlignmentPadding)); |
2994 __ j(equal, &no_padding, Label::kNear); | 2991 __ j(equal, &no_padding, Label::kNear); |
2995 | 2992 |
2996 EmitReturn(instr, true); | 2993 EmitReturn(instr, true); |
2997 __ bind(&no_padding); | 2994 __ bind(&no_padding); |
2998 } | 2995 } |
2999 | 2996 |
3000 EmitReturn(instr, false); | 2997 EmitReturn(instr, false); |
3001 if (no_frame_start != -1) { | |
3002 info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | |
3003 } | |
3004 } | 2998 } |
3005 | 2999 |
3006 | 3000 |
3007 template <class T> | 3001 template <class T> |
3008 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 3002 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { |
3009 Register vector_register = ToRegister(instr->temp_vector()); | 3003 Register vector_register = ToRegister(instr->temp_vector()); |
3010 Register slot_register = LoadWithVectorDescriptor::SlotRegister(); | 3004 Register slot_register = LoadWithVectorDescriptor::SlotRegister(); |
3011 DCHECK(vector_register.is(LoadWithVectorDescriptor::VectorRegister())); | 3005 DCHECK(vector_register.is(LoadWithVectorDescriptor::VectorRegister())); |
3012 DCHECK(slot_register.is(eax)); | 3006 DCHECK(slot_register.is(eax)); |
3013 | 3007 |
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6338 RecordSafepoint(Safepoint::kNoLazyDeopt); | 6332 RecordSafepoint(Safepoint::kNoLazyDeopt); |
6339 } | 6333 } |
6340 | 6334 |
6341 | 6335 |
6342 #undef __ | 6336 #undef __ |
6343 | 6337 |
6344 } // namespace internal | 6338 } // namespace internal |
6345 } // namespace v8 | 6339 } // namespace v8 |
6346 | 6340 |
6347 #endif // V8_TARGET_ARCH_X87 | 6341 #endif // V8_TARGET_ARCH_X87 |
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