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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 "v8.h" | 5 #include "v8.h" |
| 6 | 6 |
| 7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
| 8 | 8 |
| 9 #include "codegen.h" | 9 #include "codegen.h" |
| 10 #include "debug.h" | 10 #include "debug.h" |
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| 60 Assembler::kDebugBreakSlotLength - Assembler::kCallInstructionLength); | 60 Assembler::kDebugBreakSlotLength - Assembler::kCallInstructionLength); |
| 61 } | 61 } |
| 62 | 62 |
| 63 | 63 |
| 64 void BreakLocationIterator::ClearDebugBreakAtSlot() { | 64 void BreakLocationIterator::ClearDebugBreakAtSlot() { |
| 65 ASSERT(IsDebugBreakSlot()); | 65 ASSERT(IsDebugBreakSlot()); |
| 66 rinfo()->PatchCode(original_rinfo()->pc(), Assembler::kDebugBreakSlotLength); | 66 rinfo()->PatchCode(original_rinfo()->pc(), Assembler::kDebugBreakSlotLength); |
| 67 } | 67 } |
| 68 | 68 |
| 69 | 69 |
| 70 // All debug break stubs support padding for LiveEdit. | |
| 71 const bool Debug::FramePaddingLayout::kIsSupported = true; | |
| 72 | |
| 73 | |
| 74 #define __ ACCESS_MASM(masm) | 70 #define __ ACCESS_MASM(masm) |
| 75 | 71 |
| 76 static void Generate_DebugBreakCallHelper(MacroAssembler* masm, | 72 static void Generate_DebugBreakCallHelper(MacroAssembler* masm, |
| 77 RegList object_regs, | 73 RegList object_regs, |
| 78 RegList non_object_regs, | 74 RegList non_object_regs, |
| 79 bool convert_call_to_jmp) { | 75 bool convert_call_to_jmp) { |
| 80 // Enter an internal frame. | 76 // Enter an internal frame. |
| 81 { | 77 { |
| 82 FrameScope scope(masm, StackFrame::INTERNAL); | 78 FrameScope scope(masm, StackFrame::INTERNAL); |
| 83 | 79 |
| 84 // Load padding words on stack. | 80 // Load padding words on stack. |
| 85 for (int i = 0; i < Debug::FramePaddingLayout::kInitialSize; i++) { | 81 for (int i = 0; i < LiveEdit::kFramePaddingInitialSize; i++) { |
| 86 __ push(Immediate(Smi::FromInt( | 82 __ push(Immediate(Smi::FromInt(LiveEdit::kFramePaddingValue))); |
| 87 Debug::FramePaddingLayout::kPaddingValue))); | |
| 88 } | 83 } |
| 89 __ push(Immediate(Smi::FromInt(Debug::FramePaddingLayout::kInitialSize))); | 84 __ push(Immediate(Smi::FromInt(LiveEdit::kFramePaddingInitialSize))); |
| 90 | 85 |
| 91 // Store the registers containing live values on the expression stack to | 86 // Store the registers containing live values on the expression stack to |
| 92 // make sure that these are correctly updated during GC. Non object values | 87 // make sure that these are correctly updated during GC. Non object values |
| 93 // are stored as a smi causing it to be untouched by GC. | 88 // are stored as a smi causing it to be untouched by GC. |
| 94 ASSERT((object_regs & ~kJSCallerSaved) == 0); | 89 ASSERT((object_regs & ~kJSCallerSaved) == 0); |
| 95 ASSERT((non_object_regs & ~kJSCallerSaved) == 0); | 90 ASSERT((non_object_regs & ~kJSCallerSaved) == 0); |
| 96 ASSERT((object_regs & non_object_regs) == 0); | 91 ASSERT((object_regs & non_object_regs) == 0); |
| 97 for (int i = 0; i < kNumJSCallerSaved; i++) { | 92 for (int i = 0; i < kNumJSCallerSaved; i++) { |
| 98 int r = JSCallerSavedCode(i); | 93 int r = JSCallerSavedCode(i); |
| 99 Register reg = { r }; | 94 Register reg = { r }; |
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| 324 | 319 |
| 325 // Get function code. | 320 // Get function code. |
| 326 __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); | 321 __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 327 __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset)); | 322 __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset)); |
| 328 __ lea(edx, FieldOperand(edx, Code::kHeaderSize)); | 323 __ lea(edx, FieldOperand(edx, Code::kHeaderSize)); |
| 329 | 324 |
| 330 // Re-run JSFunction, edi is function, esi is context. | 325 // Re-run JSFunction, edi is function, esi is context. |
| 331 __ jmp(edx); | 326 __ jmp(edx); |
| 332 } | 327 } |
| 333 | 328 |
| 334 const bool Debug::kFrameDropperSupported = true; | 329 |
| 330 const bool LiveEdit::kFrameDropperSupported = true; |
| 335 | 331 |
| 336 #undef __ | 332 #undef __ |
| 337 | 333 |
| 338 } } // namespace v8::internal | 334 } } // namespace v8::internal |
| 339 | 335 |
| 340 #endif // V8_TARGET_ARCH_IA32 | 336 #endif // V8_TARGET_ARCH_IA32 |
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