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Side by Side Diff: courgette/encoded_program.h

Issue 6716006: Identifying call sites that need to handle out of memory situations in Courgette. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 9 months ago
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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2009 The Chromium 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 COURGETTE_ENCODED_PROGRAM_H_ 5 #ifndef COURGETTE_ENCODED_PROGRAM_H_
6 #define COURGETTE_ENCODED_PROGRAM_H_ 6 #define COURGETTE_ENCODED_PROGRAM_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/basictypes.h" 10 #include "base/basictypes.h"
(...skipping 14 matching lines...) Expand all
25 public: 25 public:
26 EncodedProgram(); 26 EncodedProgram();
27 ~EncodedProgram(); 27 ~EncodedProgram();
28 28
29 // Generating an EncodedProgram: 29 // Generating an EncodedProgram:
30 // 30 //
31 // (1) The image base can be specified at any time. 31 // (1) The image base can be specified at any time.
32 void set_image_base(uint64 base) { image_base_ = base; } 32 void set_image_base(uint64 base) { image_base_ = base; }
33 33
34 // (2) Address tables and indexes defined first. 34 // (2) Address tables and indexes defined first.
35 void DefineRel32Label(int index, RVA address); 35 CheckBool DefineRel32Label(int index, RVA address);
36 void DefineAbs32Label(int index, RVA address); 36 CheckBool DefineAbs32Label(int index, RVA address);
37 void EndLabels(); 37 void EndLabels();
38 38
39 // (3) Add instructions in the order needed to generate bytes of file. 39 // (3) Add instructions in the order needed to generate bytes of file.
40 void AddOrigin(RVA rva); 40 CheckBool AddOrigin(RVA rva);
41 void AddCopy(uint32 count, const void* bytes); 41 CheckBool AddCopy(uint32 count, const void* bytes);
42 void AddRel32(int label_index); 42 CheckBool AddRel32(int label_index);
43 void AddAbs32(int label_index); 43 CheckBool AddAbs32(int label_index);
44 void AddMakeRelocs(); 44 CheckBool AddMakeRelocs();
45 45
46 // (3) Serialize binary assembly language tables to a set of streams. 46 // (3) Serialize binary assembly language tables to a set of streams.
47 void WriteTo(SinkStreamSet *streams); 47 CheckBool WriteTo(SinkStreamSet* streams);
48 48
49 // Using an EncodedProgram to generate a byte stream: 49 // Using an EncodedProgram to generate a byte stream:
50 // 50 //
51 // (4) Deserializes a fresh EncodedProgram from a set of streams. 51 // (4) Deserializes a fresh EncodedProgram from a set of streams.
52 bool ReadFrom(SourceStreamSet *streams); 52 bool ReadFrom(SourceStreamSet* streams);
53 53
54 // (5) Assembles the 'binary assembly language' into final file. 54 // (5) Assembles the 'binary assembly language' into final file.
55 bool AssembleTo(SinkStream *buffer); 55 CheckBool AssembleTo(SinkStream* buffer);
56 56
57 private: 57 private:
58 // Binary assembly language operations. 58 // Binary assembly language operations.
59 enum OP { 59 enum OP {
60 ORIGIN, // ORIGIN <rva> - set address for subsequent assembly. 60 ORIGIN, // ORIGIN <rva> - set address for subsequent assembly.
61 COPY, // COPY <count> <bytes> - copy bytes to output. 61 COPY, // COPY <count> <bytes> - copy bytes to output.
62 COPY1, // COPY1 <byte> - same as COPY 1 <byte>. 62 COPY1, // COPY1 <byte> - same as COPY 1 <byte>.
63 REL32, // REL32 <index> - emit rel32 encoded reference to address at 63 REL32, // REL32 <index> - emit rel32 encoded reference to address at
64 // address table offset <index> 64 // address table offset <index>
65 ABS32, // ABS32 <index> - emit abs32 encoded reference to address at 65 ABS32, // ABS32 <index> - emit abs32 encoded reference to address at
66 // address table offset <index> 66 // address table offset <index>
67 MAKE_BASE_RELOCATION_TABLE, // Emit base relocation table blocks. 67 MAKE_BASE_RELOCATION_TABLE, // Emit base relocation table blocks.
68 OP_LAST 68 OP_LAST
69 }; 69 };
70 70
71 typedef std::vector<RVA, MemoryAllocator<RVA> > RvaVector; 71 typedef std::vector<RVA, MemoryAllocator<RVA> > RvaVector;
72 typedef std::vector<uint32, MemoryAllocator<uint32> > UInt32Vector; 72 typedef std::vector<uint32, MemoryAllocator<uint32> > UInt32Vector;
73 typedef std::vector<uint8, MemoryAllocator<uint8> > UInt8Vector; 73 typedef std::vector<uint8, MemoryAllocator<uint8> > UInt8Vector;
74 typedef std::vector<OP, MemoryAllocator<OP> > OPVector; 74 typedef std::vector<OP, MemoryAllocator<OP> > OPVector;
75 75
76 void DebuggingSummary(); 76 void DebuggingSummary();
77 void GenerateBaseRelocations(SinkStream *buffer); 77 CheckBool GenerateBaseRelocations(SinkStream *buffer);
78 void DefineLabelCommon(RvaVector*, int, RVA); 78 CheckBool DefineLabelCommon(RvaVector*, int, RVA);
79 void FinishLabelsCommon(RvaVector* addresses); 79 void FinishLabelsCommon(RvaVector* addresses);
80 80
81 // Binary assembly language tables. 81 // Binary assembly language tables.
82 uint64 image_base_; 82 uint64 image_base_;
83 RvaVector rel32_rva_; 83 RvaVector rel32_rva_;
84 RvaVector abs32_rva_; 84 RvaVector abs32_rva_;
85 OPVector ops_; 85 OPVector ops_;
86 RvaVector origins_; 86 RvaVector origins_;
87 UInt32Vector copy_counts_; 87 UInt32Vector copy_counts_;
88 UInt8Vector copy_bytes_; 88 UInt8Vector copy_bytes_;
89 UInt32Vector rel32_ix_; 89 UInt32Vector rel32_ix_;
90 UInt32Vector abs32_ix_; 90 UInt32Vector abs32_ix_;
91 91
92 // Table of the addresses containing abs32 relocations; computed during 92 // Table of the addresses containing abs32 relocations; computed during
93 // assembly, used to generate base relocation table. 93 // assembly, used to generate base relocation table.
94 UInt32Vector abs32_relocs_; 94 UInt32Vector abs32_relocs_;
95 95
96 DISALLOW_COPY_AND_ASSIGN(EncodedProgram); 96 DISALLOW_COPY_AND_ASSIGN(EncodedProgram);
97 }; 97 };
98 98
99 } // namespace courgette 99 } // namespace courgette
100 #endif // COURGETTE_ENCODED_PROGRAM_H_ 100 #endif // COURGETTE_ENCODED_PROGRAM_H_
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