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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_IA32_FRAME_CONSTANTS_IA32_H_
#define V8_IA32_FRAME_CONSTANTS_IA32_H_
#include "src/base/macros.h"
#include "src/frame-constants.h"
namespace v8 {
namespace internal {
class EntryFrameConstants : public AllStatic {
public:
// This is the offset to where JSEntry pushes the current value of
// Isolate::c_entry_fp onto the stack.
static constexpr int kCallerFPOffset = -6 * kPointerSize;
// EntryFrame is used by JSEntry, JSConstructEntry and JSRunMicrotasksEntry.
// All of them take |root_register_value| as the first parameter.
static constexpr int kRootRegisterValueOffset = +2 * kPointerSize;
// Rest of parameters passed to JSEntry and JSConstructEntry.
static constexpr int kNewTargetArgOffset = +3 * kPointerSize;
static constexpr int kFunctionArgOffset = +4 * kPointerSize;
static constexpr int kReceiverArgOffset = +5 * kPointerSize;
static constexpr int kArgcOffset = +6 * kPointerSize;
static constexpr int kArgvOffset = +7 * kPointerSize;
// Rest of parameters passed to JSRunMicrotasksEntry.
static constexpr int kMicrotaskQueueArgOffset = +3 * kPointerSize;
};
class ExitFrameConstants : public TypedFrameConstants {
public:
static constexpr int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0);
static constexpr int kCodeOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(1);
DEFINE_TYPED_FRAME_SIZES(2);
static constexpr int kCallerFPOffset = 0 * kPointerSize;
static constexpr int kCallerPCOffset = +1 * kPointerSize;
// FP-relative displacement of the caller's SP. It points just
// below the saved PC.
static constexpr int kCallerSPDisplacement = +2 * kPointerSize;
static constexpr int kConstantPoolOffset = 0; // Not used
};
class WasmCompileLazyFrameConstants : public TypedFrameConstants {
public:
static constexpr int kNumberOfSavedGpParamRegs = 4;
static constexpr int kNumberOfSavedFpParamRegs = 6;
// FP-relative.
static constexpr int kWasmInstanceOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0);
static constexpr int kFixedFrameSizeFromFp =
TypedFrameConstants::kFixedFrameSizeFromFp +
kNumberOfSavedGpParamRegs * kPointerSize +
kNumberOfSavedFpParamRegs * kSimd128Size;
};
class JavaScriptFrameConstants : public AllStatic {
public:
// FP-relative.
static constexpr int kLocal0Offset =
StandardFrameConstants::kExpressionsOffset;
static constexpr int kLastParameterOffset = +2 * kPointerSize;
static constexpr int kFunctionOffset =
StandardFrameConstants::kFunctionOffset;
// Caller SP-relative.
static constexpr int kParam0Offset = -2 * kPointerSize;
static constexpr int kReceiverOffset = -1 * kPointerSize;
};
} // namespace internal
} // namespace v8
#endif // V8_IA32_FRAME_CONSTANTS_IA32_H_
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