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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.
#ifndef V8_EXECUTION_X64_FRAME_CONSTANTS_X64_H_
#define V8_EXECUTION_X64_FRAME_CONSTANTS_X64_H_
#include "src/base/macros.h"
#include "src/execution/frame-constants.h"
namespace v8 {
namespace internal {
class EntryFrameConstants : public AllStatic {
public:
#ifdef _WIN64
static constexpr int kCalleeSaveXMMRegisters = 10;
static constexpr int kXMMRegisterSize = 16;
static constexpr int kXMMRegistersBlockSize =
kXMMRegisterSize * kCalleeSaveXMMRegisters;
// This is the offset to where JSEntry pushes the current value of
// Isolate::c_entry_fp onto the stack.
// On x64, there are 7 pushq() and 3 Push() calls between setting up rbp and
// pushing the c_entry_fp, plus we manually allocate kXMMRegistersBlockSize
// bytes on the stack.
static constexpr int kCallerFPOffset = -3 * kSystemPointerSize +
-7 * kSystemPointerSize -
kXMMRegistersBlockSize;
// Stack offsets for arguments passed to JSEntry.
static constexpr int kArgcOffset = 6 * kSystemPointerSize;
static constexpr int kArgvOffset = 7 * kSystemPointerSize;
#else
// This is the offset to where JSEntry pushes the current value of
// Isolate::c_entry_fp onto the stack.
// On x64, there are 5 pushq() and 3 Push() calls between setting up rbp and
// pushing the c_entry_fp.
static constexpr int kCallerFPOffset =
-3 * kSystemPointerSize + -5 * kSystemPointerSize;
#endif
};
class ExitFrameConstants : public TypedFrameConstants {
public:
static constexpr int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0);
DEFINE_TYPED_FRAME_SIZES(1);
static constexpr int kCallerFPOffset = +0 * kSystemPointerSize;
static constexpr int kCallerPCOffset = kFPOnStackSize;
// FP-relative displacement of the caller's SP. It points just
// below the saved PC.
static constexpr int kCallerSPDisplacement = kCallerPCOffset + kPCOnStackSize;
static constexpr int kConstantPoolOffset = 0; // Not used
};
class WasmCompileLazyFrameConstants : public TypedFrameConstants {
public:
static constexpr int kNumberOfSavedGpParamRegs = 6;
static constexpr int kNumberOfSavedFpParamRegs = 6;
// FP-relative.
static constexpr int kWasmInstanceOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0);
static constexpr int kFixedFrameSizeFromFp =
TypedFrameConstants::kFixedFrameSizeFromFp +
kNumberOfSavedGpParamRegs * kSystemPointerSize +
kNumberOfSavedFpParamRegs * kSimd128Size;
};
class JavaScriptFrameConstants : public AllStatic {
public:
// FP-relative.
static constexpr int kLocal0Offset =
StandardFrameConstants::kExpressionsOffset;
static constexpr int kLastParameterOffset = kFPOnStackSize + kPCOnStackSize;
static constexpr int kFunctionOffset =
StandardFrameConstants::kFunctionOffset;
// Caller SP-relative.
static constexpr int kParam0Offset = -2 * kSystemPointerSize;
static constexpr int kReceiverOffset = -1 * kSystemPointerSize;
};
} // namespace internal
} // namespace v8
#endif // V8_EXECUTION_X64_FRAME_CONSTANTS_X64_H_