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Unified Diff: src/ia32/debug-ia32.cc

Issue 1265923002: Debugger: move implementation to a separate folder. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebase Created 5 years, 5 months ago
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Index: src/ia32/debug-ia32.cc
diff --git a/src/ia32/debug-ia32.cc b/src/ia32/debug-ia32.cc
deleted file mode 100644
index 345ad3da8b85d9e251f7643246bfe86208d4f169..0000000000000000000000000000000000000000
--- a/src/ia32/debug-ia32.cc
+++ /dev/null
@@ -1,147 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "src/v8.h"
-
-#if V8_TARGET_ARCH_IA32
-
-#include "src/codegen.h"
-#include "src/debug.h"
-
-
-namespace v8 {
-namespace internal {
-
-#define __ ACCESS_MASM(masm)
-
-
-void EmitDebugBreakSlot(MacroAssembler* masm) {
- Label check_codesize;
- __ bind(&check_codesize);
- __ Nop(Assembler::kDebugBreakSlotLength);
- DCHECK_EQ(Assembler::kDebugBreakSlotLength,
- masm->SizeOfCodeGeneratedSince(&check_codesize));
-}
-
-
-void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode,
- int call_argc) {
- // Generate enough nop's to make space for a call instruction.
- masm->RecordDebugBreakSlot(mode, call_argc);
- EmitDebugBreakSlot(masm);
-}
-
-
-void DebugCodegen::ClearDebugBreakSlot(Address pc) {
- CodePatcher patcher(pc, Assembler::kDebugBreakSlotLength);
- EmitDebugBreakSlot(patcher.masm());
-}
-
-
-void DebugCodegen::PatchDebugBreakSlot(Address pc, Handle<Code> code) {
- DCHECK_EQ(Code::BUILTIN, code->kind());
- static const int kSize = Assembler::kDebugBreakSlotLength;
- CodePatcher patcher(pc, kSize);
-
- // Add a label for checking the size of the code used for returning.
- Label check_codesize;
- patcher.masm()->bind(&check_codesize);
- patcher.masm()->call(code->entry(), RelocInfo::NONE32);
- // Check that the size of the code generated is as expected.
- DCHECK_EQ(kSize, patcher.masm()->SizeOfCodeGeneratedSince(&check_codesize));
-}
-
-
-void DebugCodegen::GenerateDebugBreakStub(MacroAssembler* masm,
- DebugBreakCallHelperMode mode) {
- __ RecordComment("Debug break");
-
- // Enter an internal frame.
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
-
- // Load padding words on stack.
- for (int i = 0; i < LiveEdit::kFramePaddingInitialSize; i++) {
- __ push(Immediate(Smi::FromInt(LiveEdit::kFramePaddingValue)));
- }
- __ push(Immediate(Smi::FromInt(LiveEdit::kFramePaddingInitialSize)));
-
- if (mode == SAVE_RESULT_REGISTER) __ push(eax);
-
- __ Move(eax, Immediate(0)); // No arguments.
- __ mov(ebx,
- Immediate(ExternalReference(
- Runtime::FunctionForId(Runtime::kDebugBreak), masm->isolate())));
-
- CEntryStub ceb(masm->isolate(), 1);
- __ CallStub(&ceb);
-
- if (FLAG_debug_code) {
- for (int i = 0; i < kNumJSCallerSaved; ++i) {
- Register reg = {JSCallerSavedCode(i)};
- __ Move(reg, Immediate(kDebugZapValue));
- }
- }
-
- if (mode == SAVE_RESULT_REGISTER) __ pop(eax);
-
- __ pop(ebx);
- // We divide stored value by 2 (untagging) and multiply it by word's size.
- STATIC_ASSERT(kSmiTagSize == 1 && kSmiShiftSize == 0);
- __ lea(esp, Operand(esp, ebx, times_half_pointer_size, 0));
-
- // Get rid of the internal frame.
- }
-
- // This call did not replace a call , so there will be an unwanted
- // return address left on the stack. Here we get rid of that.
- __ add(esp, Immediate(kPointerSize));
-
- // Now that the break point has been handled, resume normal execution by
- // jumping to the target address intended by the caller and that was
- // overwritten by the address of DebugBreakXXX.
- ExternalReference after_break_target =
- ExternalReference::debug_after_break_target_address(masm->isolate());
- __ jmp(Operand::StaticVariable(after_break_target));
-}
-
-
-void DebugCodegen::GeneratePlainReturnLiveEdit(MacroAssembler* masm) {
- masm->ret(0);
-}
-
-
-void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
- ExternalReference restarter_frame_function_slot =
- ExternalReference::debug_restarter_frame_function_pointer_address(
- masm->isolate());
- __ mov(Operand::StaticVariable(restarter_frame_function_slot), Immediate(0));
-
- // We do not know our frame height, but set esp based on ebp.
- __ lea(esp, Operand(ebp, -1 * kPointerSize));
-
- __ pop(edi); // Function.
- __ pop(ebp);
-
- // Load context from the function.
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
-
- // Get function code.
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset));
- __ lea(edx, FieldOperand(edx, Code::kHeaderSize));
-
- // Re-run JSFunction, edi is function, esi is context.
- __ jmp(edx);
-}
-
-
-const bool LiveEdit::kFrameDropperSupported = true;
-
-#undef __
-
-} // namespace internal
-} // namespace v8
-
-#endif // V8_TARGET_ARCH_IA32
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