| // Copyright 2011 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_MIPS_FRAME_CONSTANTS_MIPS_H_ |
| #define V8_EXECUTION_MIPS_FRAME_CONSTANTS_MIPS_H_ |
| |
| #include "src/base/macros.h" |
| #include "src/execution/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 = |
| -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize); |
| |
| // Stack offsets for arguments passed to JSEntry. |
| static constexpr int kArgcOffset = +0 * kSystemPointerSize; |
| static constexpr int kArgvOffset = +1 * kSystemPointerSize; |
| }; |
| |
| class ExitFrameConstants : public TypedFrameConstants { |
| public: |
| static constexpr int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0); |
| DEFINE_TYPED_FRAME_SIZES(1); |
| |
| // The caller fields are below the frame pointer on the stack. |
| static constexpr int kCallerFPOffset = +0 * kPointerSize; |
| // The calling JS function is between FP and PC. |
| static constexpr int kCallerPCOffset = +1 * kPointerSize; |
| |
| // MIPS-specific: a pointer to the old sp to avoid unnecessary calculations. |
| static constexpr int kCallerSPOffset = +2 * kPointerSize; |
| |
| // FP-relative displacement of the caller's SP. |
| static constexpr int kCallerSPDisplacement = +2 * kPointerSize; |
| |
| static constexpr int kConstantPoolOffset = 0; // Not used. |
| }; |
| |
| class WasmCompileLazyFrameConstants : public TypedFrameConstants { |
| public: |
| static constexpr int kNumberOfSavedGpParamRegs = 3; |
| static constexpr int kNumberOfSavedFpParamRegs = 7; |
| |
| // FP-relative. |
| static constexpr int kWasmInstanceOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(3); |
| static constexpr int kFixedFrameSizeFromFp = |
| TypedFrameConstants::kFixedFrameSizeFromFp + |
| kNumberOfSavedGpParamRegs * kPointerSize + |
| kNumberOfSavedFpParamRegs * kDoubleSize; |
| }; |
| |
| 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_EXECUTION_MIPS_FRAME_CONSTANTS_MIPS_H_ |