// 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 * kSystemPointerSize; // EntryFrame is used by JSEntry, JSConstructEntry and JSRunMicrotasksEntry. // All of them take |root_register_value| as the first parameter. static constexpr int kRootRegisterValueOffset = +2 * kSystemPointerSize; // Rest of parameters passed to JSEntry and JSConstructEntry. static constexpr int kNewTargetArgOffset = +3 * kSystemPointerSize; static constexpr int kFunctionArgOffset = +4 * kSystemPointerSize; static constexpr int kReceiverArgOffset = +5 * kSystemPointerSize; static constexpr int kArgcOffset = +6 * kSystemPointerSize; static constexpr int kArgvOffset = +7 * kSystemPointerSize; // Rest of parameters passed to JSRunMicrotasksEntry. static constexpr int kMicrotaskQueueArgOffset = +3 * kSystemPointerSize; }; 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 = +1 * kSystemPointerSize; // FP-relative displacement of the caller's SP. It points just // below the saved PC. static constexpr int kCallerSPDisplacement = +2 * kSystemPointerSize; 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 * kSystemPointerSize + kNumberOfSavedFpParamRegs * kSimd128Size; }; class JavaScriptFrameConstants : public AllStatic { public: // FP-relative. static constexpr int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; static constexpr int kLastParameterOffset = +2 * kSystemPointerSize; 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_IA32_FRAME_CONSTANTS_IA32_H_