Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/arm64/assembler-arm64.h" |
| 6 | #include "src/arm64/constants-arm64.h" |
| 7 | |
| 8 | #ifndef V8_ARM64_FRAMES_ARM64_H_ |
| 9 | #define V8_ARM64_FRAMES_ARM64_H_ |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | |
| 14 | const int kNumRegs = kNumberOfRegisters; |
| 15 | // Registers x0-x17 are caller-saved. |
| 16 | const int kNumJSCallerSaved = 18; |
| 17 | const RegList kJSCallerSaved = 0x3ffff; |
| 18 | |
| 19 | // Number of registers for which space is reserved in safepoints. Must be a |
| 20 | // multiple of eight. |
| 21 | // TODO(all): Refine this number. |
| 22 | const int kNumSafepointRegisters = 32; |
| 23 | |
| 24 | // Define the list of registers actually saved at safepoints. |
| 25 | // Note that the number of saved registers may be smaller than the reserved |
| 26 | // space, i.e. kNumSafepointSavedRegisters <= kNumSafepointRegisters. |
| 27 | #define kSafepointSavedRegisters CPURegList::GetSafepointSavedRegisters().list() |
| 28 | #define kNumSafepointSavedRegisters \ |
| 29 | CPURegList::GetSafepointSavedRegisters().Count(); |
| 30 | |
| 31 | class EntryFrameConstants : public AllStatic { |
| 32 | public: |
| 33 | static const int kCallerFPOffset = |
| 34 | -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize); |
| 35 | }; |
| 36 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 37 | class ExitFrameConstants : public TypedFrameConstants { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 38 | public: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 39 | static const int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0); |
| 40 | static const int kCodeOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(1); |
| 41 | DEFINE_TYPED_FRAME_SIZES(2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | static const int kLastExitFrameField = kCodeOffset; |
| 43 | |
| 44 | static const int kConstantPoolOffset = 0; // Not used |
| 45 | }; |
| 46 | |
| 47 | |
| 48 | class JavaScriptFrameConstants : public AllStatic { |
| 49 | public: |
| 50 | // FP-relative. |
| 51 | static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
| 52 | |
| 53 | // There are two words on the stack (saved fp and saved lr) between fp and |
| 54 | // the arguments. |
| 55 | static const int kLastParameterOffset = 2 * kPointerSize; |
| 56 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 57 | static const int kFunctionOffset = StandardFrameConstants::kFunctionOffset; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 58 | }; |
| 59 | |
| 60 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 61 | } // namespace internal |
| 62 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | |
| 64 | #endif // V8_ARM64_FRAMES_ARM64_H_ |