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// Copyright 2015 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/init/v8.h"
#if V8_TARGET_ARCH_S390
#include "src/debug/debug.h"
#include "src/codegen/macro-assembler.h"
#include "src/debug/liveedit.h"
#include "src/execution/frames-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 r3.
// - Look up current function on the frame.
// - Leave the frame.
// - Restart the frame by calling the function.
__ mov(fp, r3);
__ LoadU64(r3, MemOperand(fp, StandardFrameConstants::kFunctionOffset));
__ LoadU64(r2, MemOperand(fp, StandardFrameConstants::kArgCOffset));
__ LeaveFrame(StackFrame::INTERNAL);
// The arguments are already in the stack (including any necessary padding),
// we should not try to massage the arguments again.
__ mov(r4, Operand(kDontAdaptArgumentsSentinel));
__ InvokeFunction(r3, r4, r2, JUMP_FUNCTION);
}
const bool LiveEdit::kFrameDropperSupported = true;
#undef __
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_S390
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