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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/arm/lithium-codegen-arm.h" | 5 #include "src/arm/lithium-codegen-arm.h" | 
| 6 #include "src/arm/lithium-gap-resolver-arm.h" | 6 #include "src/arm/lithium-gap-resolver-arm.h" | 
| 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/hydrogen-osr.h" | 10 #include "src/hydrogen-osr.h" | 
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| 135   } | 135   } | 
| 136 | 136 | 
| 137   info()->set_prologue_offset(masm_->pc_offset()); | 137   info()->set_prologue_offset(masm_->pc_offset()); | 
| 138   if (NeedsEagerFrame()) { | 138   if (NeedsEagerFrame()) { | 
| 139     if (info()->IsStub()) { | 139     if (info()->IsStub()) { | 
| 140       __ StubPrologue(); | 140       __ StubPrologue(); | 
| 141     } else { | 141     } else { | 
| 142       __ Prologue(info()->IsCodePreAgingActive()); | 142       __ Prologue(info()->IsCodePreAgingActive()); | 
| 143     } | 143     } | 
| 144     frame_is_built_ = true; | 144     frame_is_built_ = true; | 
| 145     info_->AddNoFrameRange(0, masm_->pc_offset()); |  | 
| 146   } | 145   } | 
| 147 | 146 | 
| 148   // Reserve space for the stack slots needed by the code. | 147   // Reserve space for the stack slots needed by the code. | 
| 149   int slots = GetStackSlotCount(); | 148   int slots = GetStackSlotCount(); | 
| 150   if (slots > 0) { | 149   if (slots > 0) { | 
| 151     if (FLAG_debug_code) { | 150     if (FLAG_debug_code) { | 
| 152       __ sub(sp,  sp, Operand(slots * kPointerSize)); | 151       __ sub(sp,  sp, Operand(slots * kPointerSize)); | 
| 153       __ push(r0); | 152       __ push(r0); | 
| 154       __ push(r1); | 153       __ push(r1); | 
| 155       __ add(r0, sp, Operand(slots *  kPointerSize)); | 154       __ add(r0, sp, Operand(slots *  kPointerSize)); | 
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| 2752     // Runtime::TraceExit returns its parameter in r0.  We're leaving the code | 2751     // Runtime::TraceExit returns its parameter in r0.  We're leaving the code | 
| 2753     // managed by the register allocator and tearing down the frame, it's | 2752     // managed by the register allocator and tearing down the frame, it's | 
| 2754     // safe to write to the context register. | 2753     // safe to write to the context register. | 
| 2755     __ push(r0); | 2754     __ push(r0); | 
| 2756     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 2755     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 
| 2757     __ CallRuntime(Runtime::kTraceExit, 1); | 2756     __ CallRuntime(Runtime::kTraceExit, 1); | 
| 2758   } | 2757   } | 
| 2759   if (info()->saves_caller_doubles()) { | 2758   if (info()->saves_caller_doubles()) { | 
| 2760     RestoreCallerDoubles(); | 2759     RestoreCallerDoubles(); | 
| 2761   } | 2760   } | 
| 2762   int no_frame_start = -1; |  | 
| 2763   if (NeedsEagerFrame()) { | 2761   if (NeedsEagerFrame()) { | 
| 2764     no_frame_start = masm_->LeaveFrame(StackFrame::JAVA_SCRIPT); | 2762     masm_->LeaveFrame(StackFrame::JAVA_SCRIPT); | 
| 2765   } | 2763   } | 
| 2766   { ConstantPoolUnavailableScope constant_pool_unavailable(masm()); | 2764   { ConstantPoolUnavailableScope constant_pool_unavailable(masm()); | 
| 2767     if (instr->has_constant_parameter_count()) { | 2765     if (instr->has_constant_parameter_count()) { | 
| 2768       int parameter_count = ToInteger32(instr->constant_parameter_count()); | 2766       int parameter_count = ToInteger32(instr->constant_parameter_count()); | 
| 2769       int32_t sp_delta = (parameter_count + 1) * kPointerSize; | 2767       int32_t sp_delta = (parameter_count + 1) * kPointerSize; | 
| 2770       if (sp_delta != 0) { | 2768       if (sp_delta != 0) { | 
| 2771         __ add(sp, sp, Operand(sp_delta)); | 2769         __ add(sp, sp, Operand(sp_delta)); | 
| 2772       } | 2770       } | 
| 2773     } else { | 2771     } else { | 
| 2774       DCHECK(info()->IsStub());  // Functions would need to drop one more value. | 2772       DCHECK(info()->IsStub());  // Functions would need to drop one more value. | 
| 2775       Register reg = ToRegister(instr->parameter_count()); | 2773       Register reg = ToRegister(instr->parameter_count()); | 
| 2776       // The argument count parameter is a smi | 2774       // The argument count parameter is a smi | 
| 2777       __ SmiUntag(reg); | 2775       __ SmiUntag(reg); | 
| 2778       __ add(sp, sp, Operand(reg, LSL, kPointerSizeLog2)); | 2776       __ add(sp, sp, Operand(reg, LSL, kPointerSizeLog2)); | 
| 2779     } | 2777     } | 
| 2780 | 2778 | 
| 2781     __ Jump(lr); | 2779     __ Jump(lr); | 
| 2782 |  | 
| 2783     if (no_frame_start != -1) { |  | 
| 2784       info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |  | 
| 2785     } |  | 
| 2786   } | 2780   } | 
| 2787 } | 2781 } | 
| 2788 | 2782 | 
| 2789 | 2783 | 
| 2790 template <class T> | 2784 template <class T> | 
| 2791 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 2785 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 
| 2792   Register vector_register = ToRegister(instr->temp_vector()); | 2786   Register vector_register = ToRegister(instr->temp_vector()); | 
| 2793   Register slot_register = LoadDescriptor::SlotRegister(); | 2787   Register slot_register = LoadDescriptor::SlotRegister(); | 
| 2794   DCHECK(vector_register.is(LoadWithVectorDescriptor::VectorRegister())); | 2788   DCHECK(vector_register.is(LoadWithVectorDescriptor::VectorRegister())); | 
| 2795   DCHECK(slot_register.is(r0)); | 2789   DCHECK(slot_register.is(r0)); | 
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| 5842   __ push(ToRegister(instr->function())); | 5836   __ push(ToRegister(instr->function())); | 
| 5843   CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5837   CallRuntime(Runtime::kPushBlockContext, 2, instr); | 
| 5844   RecordSafepoint(Safepoint::kNoLazyDeopt); | 5838   RecordSafepoint(Safepoint::kNoLazyDeopt); | 
| 5845 } | 5839 } | 
| 5846 | 5840 | 
| 5847 | 5841 | 
| 5848 #undef __ | 5842 #undef __ | 
| 5849 | 5843 | 
| 5850 }  // namespace internal | 5844 }  // namespace internal | 
| 5851 }  // namespace v8 | 5845 }  // namespace v8 | 
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