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Side by Side Diff: src/disasm-arm.cc

Issue 1930: Adapt to new calling convention on ARM. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 12 years, 3 months ago
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1 // Copyright 2007-2008 the V8 project authors. All rights reserved. 1 // Copyright 2007-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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49 // Decoder decodes and disassembles instructions into an output buffer. 49 // Decoder decodes and disassembles instructions into an output buffer.
50 // It uses the converter to convert register names and call destinations into 50 // It uses the converter to convert register names and call destinations into
51 // more informative description. 51 // more informative description.
52 class Decoder { 52 class Decoder {
53 public: 53 public:
54 Decoder(const disasm::NameConverter& converter, 54 Decoder(const disasm::NameConverter& converter,
55 v8::internal::Vector<char> out_buffer) 55 v8::internal::Vector<char> out_buffer)
56 : converter_(converter), 56 : converter_(converter),
57 out_buffer_(out_buffer), 57 out_buffer_(out_buffer),
58 out_buffer_pos_(0) { 58 out_buffer_pos_(0) {
59 ASSERT(out_buffer_size_ > 0);
60 out_buffer_[out_buffer_pos_] = '\0'; 59 out_buffer_[out_buffer_pos_] = '\0';
61 } 60 }
62 61
63 ~Decoder() {} 62 ~Decoder() {}
64 63
65 // Writes one disassembled instruction into 'buffer' (0-terminated). 64 // Writes one disassembled instruction into 'buffer' (0-terminated).
66 // Returns the length of the disassembled machine instruction in bytes. 65 // Returns the length of the disassembled machine instruction in bytes.
67 int InstructionDecode(byte* instruction); 66 int InstructionDecode(byte* instruction);
68 67
69 private: 68 private:
(...skipping 19 matching lines...) Expand all
89 void DecodeType3(Instr* instr); 88 void DecodeType3(Instr* instr);
90 void DecodeType4(Instr* instr); 89 void DecodeType4(Instr* instr);
91 void DecodeType5(Instr* instr); 90 void DecodeType5(Instr* instr);
92 void DecodeType6(Instr* instr); 91 void DecodeType6(Instr* instr);
93 void DecodeType7(Instr* instr); 92 void DecodeType7(Instr* instr);
94 }; 93 };
95 94
96 95
97 // Append the ch to the output buffer. 96 // Append the ch to the output buffer.
98 void Decoder::PrintChar(const char ch) { 97 void Decoder::PrintChar(const char ch) {
99 ASSERT(out_buffer_pos_ < out_buffer_size_);
100 out_buffer_[out_buffer_pos_++] = ch; 98 out_buffer_[out_buffer_pos_++] = ch;
101 } 99 }
102 100
103 101
104 // Append the str to the output buffer. 102 // Append the str to the output buffer.
105 void Decoder::Print(const char* str) { 103 void Decoder::Print(const char* str) {
106 char cur = *str++; 104 char cur = *str++;
107 while (cur != 0 && (out_buffer_pos_ < (out_buffer_.length()-1))) { 105 while (cur != 0 && (out_buffer_pos_ < (out_buffer_.length()-1))) {
108 PrintChar(cur); 106 PrintChar(cur);
109 cur = *str++; 107 cur = *str++;
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423 void Decoder::Format(Instr* instr, const char* format) { 421 void Decoder::Format(Instr* instr, const char* format) {
424 char cur = *format++; 422 char cur = *format++;
425 while ((cur != 0) && (out_buffer_pos_ < (out_buffer_.length() - 1))) { 423 while ((cur != 0) && (out_buffer_pos_ < (out_buffer_.length() - 1))) {
426 if (cur == '\'') { // Single quote is used as the formatting escape. 424 if (cur == '\'') { // Single quote is used as the formatting escape.
427 format += FormatOption(instr, format); 425 format += FormatOption(instr, format);
428 } else { 426 } else {
429 out_buffer_[out_buffer_pos_++] = cur; 427 out_buffer_[out_buffer_pos_++] = cur;
430 } 428 }
431 cur = *format++; 429 cur = *format++;
432 } 430 }
433 ASSERT(out_buffer_pos_ < out_buffer_size_);
434 out_buffer_[out_buffer_pos_] = '\0'; 431 out_buffer_[out_buffer_pos_] = '\0';
435 } 432 }
436 433
437 434
438 // For currently unimplemented decodings the disassembler calls Unknown(instr) 435 // For currently unimplemented decodings the disassembler calls Unknown(instr)
439 // which will just print "unknown" of the instruction bits. 436 // which will just print "unknown" of the instruction bits.
440 void Decoder::Unknown(Instr* instr) { 437 void Decoder::Unknown(Instr* instr) {
441 Format(instr, "unknown"); 438 Format(instr, "unknown");
442 } 439 }
443 440
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935 buffer[0] = '\0'; 932 buffer[0] = '\0';
936 byte* prev_pc = pc; 933 byte* prev_pc = pc;
937 pc += d.InstructionDecode(buffer, pc); 934 pc += d.InstructionDecode(buffer, pc);
938 fprintf(f, "%p %08x %s\n", 935 fprintf(f, "%p %08x %s\n",
939 prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start()); 936 prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
940 } 937 }
941 } 938 }
942 939
943 940
944 } // namespace disasm 941 } // namespace disasm
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