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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
| 6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
| 7 | 7 |
| 8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
| 9 #include "src/bailout-reason.h" | 9 #include "src/bailout-reason.h" |
| 10 #include "src/frames.h" | 10 #include "src/frames.h" |
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| 922 friend class StandardFrame; | 922 friend class StandardFrame; |
| 923 }; | 923 }; |
| 924 | 924 |
| 925 // The code patcher is used to patch (typically) small parts of code e.g. for | 925 // The code patcher is used to patch (typically) small parts of code e.g. for |
| 926 // debugging and other types of instrumentation. When using the code patcher | 926 // debugging and other types of instrumentation. When using the code patcher |
| 927 // the exact number of bytes specified must be emitted. Is not legal to emit | 927 // the exact number of bytes specified must be emitted. Is not legal to emit |
| 928 // relocation information. If any of these constraints are violated it causes | 928 // relocation information. If any of these constraints are violated it causes |
| 929 // an assertion. | 929 // an assertion. |
| 930 class CodePatcher { | 930 class CodePatcher { |
| 931 public: | 931 public: |
| 932 CodePatcher(byte* address, int size); | 932 CodePatcher(Isolate* isolate, byte* address, int size); |
| 933 ~CodePatcher(); | 933 ~CodePatcher(); |
| 934 | 934 |
| 935 // Macro assembler to emit code. | 935 // Macro assembler to emit code. |
| 936 MacroAssembler* masm() { return &masm_; } | 936 MacroAssembler* masm() { return &masm_; } |
| 937 | 937 |
| 938 private: | 938 private: |
| 939 byte* address_; // The address of the code being patched. | 939 byte* address_; // The address of the code being patched. |
| 940 int size_; // Number of bytes of the expected patch size. | 940 int size_; // Number of bytes of the expected patch size. |
| 941 MacroAssembler masm_; // Macro assembler used to generate the code. | 941 MacroAssembler masm_; // Macro assembler used to generate the code. |
| 942 }; | 942 }; |
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| 991 } \ | 991 } \ |
| 992 masm-> | 992 masm-> |
| 993 #else | 993 #else |
| 994 #define ACCESS_MASM(masm) masm-> | 994 #define ACCESS_MASM(masm) masm-> |
| 995 #endif | 995 #endif |
| 996 | 996 |
| 997 } // namespace internal | 997 } // namespace internal |
| 998 } // namespace v8 | 998 } // namespace v8 |
| 999 | 999 |
| 1000 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 1000 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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