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// Copyright 2013 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_ARM64
#include "src/debug/debug.h"
#include "src/arm64/macro-assembler-arm64-inl.h"
#include "src/codegen.h"
#include "src/debug/liveedit.h"
#include "src/frame-constants.h"
#include "src/frames-inl.h"
#include "src/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 x1.
// - Look up current function on the frame.
// - Leave the frame.
// - Restart the frame by calling the function.
__ Mov(fp, x1);
__ AssertStackConsistency();
__ Ldr(x1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
__ Mov(masm->StackPointer(), Operand(fp));
__ Pop(fp, lr); // Frame, Return address.
__ Ldr(x0, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
__ Ldr(x0,
FieldMemOperand(x0, SharedFunctionInfo::kFormalParameterCountOffset));
__ mov(x2, x0);
ParameterCount dummy1(x2);
ParameterCount dummy2(x0);
__ InvokeFunction(x1, dummy1, dummy2, JUMP_FUNCTION);
}
const bool LiveEdit::kFrameDropperSupported = true;
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_ARM64
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