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// 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.
#if V8_TARGET_ARCH_ARM
#include "src/debug/debug.h"
#include "src/codegen/assembler-inl.h"
#include "src/codegen/macro-assembler.h"
#include "src/debug/liveedit.h"
#include "src/execution/frames-inl.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
#define __ ACCESS_MASM(masm)
void DebugCodegen::GenerateHandleDebuggerStatement(MacroAssembler* masm) {
{
FrameScope scope(masm, StackFrame::INTERNAL);
__ CallRuntime(Runtime::kHandleDebuggerStatement, 0);
}
__ MaybeDropFrames();
// Return to caller.
__ Ret();
}
void DebugCodegen::GenerateFrameDropperTrampoline(MacroAssembler* masm) {
// Frame is being dropped:
// - Drop to the target frame specified by r1.
// - Look up current function on the frame.
// - Leave the frame.
// - Restart the frame by calling the function.
__ mov(fp, r1);
__ ldr(r1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
__ LeaveFrame(StackFrame::INTERNAL);
__ ldr(r0, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
__ ldrh(r0,
FieldMemOperand(r0, SharedFunctionInfo::kFormalParameterCountOffset));
__ mov(r2, r0);
ParameterCount dummy1(r2);
ParameterCount dummy2(r0);
__ InvokeFunction(r1, dummy1, dummy2, JUMP_FUNCTION);
}
const bool LiveEdit::kFrameDropperSupported = true;
#undef __
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_ARM