| // Copyright 2013 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/arm64/assembler-arm64.h" |
| #include "src/arm64/constants-arm64.h" |
| |
| #ifndef V8_ARM64_FRAMES_ARM64_H_ |
| #define V8_ARM64_FRAMES_ARM64_H_ |
| |
| namespace v8 { |
| namespace internal { |
| |
| const int kNumRegs = kNumberOfRegisters; |
| // Registers x0-x17 are caller-saved. |
| const int kNumJSCallerSaved = 18; |
| const RegList kJSCallerSaved = 0x3ffff; |
| |
| // Number of registers for which space is reserved in safepoints. Must be a |
| // multiple of eight. |
| // TODO(all): Refine this number. |
| const int kNumSafepointRegisters = 32; |
| |
| // Define the list of registers actually saved at safepoints. |
| // Note that the number of saved registers may be smaller than the reserved |
| // space, i.e. kNumSafepointSavedRegisters <= kNumSafepointRegisters. |
| #define kSafepointSavedRegisters CPURegList::GetSafepointSavedRegisters().list() |
| #define kNumSafepointSavedRegisters \ |
| CPURegList::GetSafepointSavedRegisters().Count(); |
| |
| class EntryFrameConstants : public AllStatic { |
| public: |
| static const int kCallerFPOffset = |
| -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize); |
| }; |
| |
| class ExitFrameConstants : public TypedFrameConstants { |
| public: |
| static const int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0); |
| static const int kCodeOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(1); |
| DEFINE_TYPED_FRAME_SIZES(2); |
| static const int kLastExitFrameField = kCodeOffset; |
| |
| static const int kConstantPoolOffset = 0; // Not used |
| }; |
| |
| |
| class JavaScriptFrameConstants : public AllStatic { |
| public: |
| // FP-relative. |
| static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
| |
| // There are two words on the stack (saved fp and saved lr) between fp and |
| // the arguments. |
| static const int kLastParameterOffset = 2 * kPointerSize; |
| |
| static const int kFunctionOffset = StandardFrameConstants::kFunctionOffset; |
| }; |
| |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_ARM64_FRAMES_ARM64_H_ |