Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4 | |
| 5 | // A Disassembler object is used to disassemble a block of code instruction by |
| 6 | // instruction. The default implementation of the NameConverter object can be |
| 7 | // overriden to modify register names or to do symbol lookup on addresses. |
| 8 | // |
| 9 | // The example below will disassemble a block of code and print it to stdout. |
| 10 | // |
| 11 | // NameConverter converter; |
| 12 | // Disassembler d(converter); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 13 | // for (byte* pc = begin; pc < end;) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 14 | // v8::internal::EmbeddedVector<char, 256> buffer; |
| 15 | // byte* prev_pc = pc; |
| 16 | // pc += d.InstructionDecode(buffer, pc); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 17 | // printf("%p %08x %s\n", |
| 18 | // prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer); |
| 19 | // } |
| 20 | // |
| 21 | // The Disassembler class also has a convenience method to disassemble a block |
| 22 | // of code into a FILE*, meaning that the above functionality could also be |
| 23 | // achieved by just calling Disassembler::Disassemble(stdout, begin, end); |
| 24 | |
| 25 | |
| 26 | #include <assert.h> |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 27 | #include <stdarg.h> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 28 | #include <stdio.h> |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 29 | #include <string.h> |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 30 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 31 | #include "src/v8.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 32 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 33 | #if V8_TARGET_ARCH_MIPS |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 34 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 35 | #include "src/base/platform/platform.h" |
| 36 | #include "src/disasm.h" |
| 37 | #include "src/macro-assembler.h" |
| 38 | #include "src/mips/constants-mips.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 39 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 40 | namespace v8 { |
| 41 | namespace internal { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 42 | |
| 43 | //------------------------------------------------------------------------------ |
| 44 | |
| 45 | // Decoder decodes and disassembles instructions into an output buffer. |
| 46 | // It uses the converter to convert register names and call destinations into |
| 47 | // more informative description. |
| 48 | class Decoder { |
| 49 | public: |
| 50 | Decoder(const disasm::NameConverter& converter, |
| 51 | v8::internal::Vector<char> out_buffer) |
| 52 | : converter_(converter), |
| 53 | out_buffer_(out_buffer), |
| 54 | out_buffer_pos_(0) { |
| 55 | out_buffer_[out_buffer_pos_] = '\0'; |
| 56 | } |
| 57 | |
| 58 | ~Decoder() {} |
| 59 | |
| 60 | // Writes one disassembled instruction into 'buffer' (0-terminated). |
| 61 | // Returns the length of the disassembled machine instruction in bytes. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 62 | int InstructionDecode(byte* instruction); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 63 | |
| 64 | private: |
| 65 | // Bottleneck functions to print into the out_buffer. |
| 66 | void PrintChar(const char ch); |
| 67 | void Print(const char* str); |
| 68 | |
| 69 | // Printing of common values. |
| 70 | void PrintRegister(int reg); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 71 | void PrintFPURegister(int freg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 72 | void PrintRs(Instruction* instr); |
| 73 | void PrintRt(Instruction* instr); |
| 74 | void PrintRd(Instruction* instr); |
| 75 | void PrintFs(Instruction* instr); |
| 76 | void PrintFt(Instruction* instr); |
| 77 | void PrintFd(Instruction* instr); |
| 78 | void PrintSa(Instruction* instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 79 | void PrintSd(Instruction* instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 80 | void PrintSs1(Instruction* instr); |
| 81 | void PrintSs2(Instruction* instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 82 | void PrintBc(Instruction* instr); |
| 83 | void PrintCc(Instruction* instr); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 84 | void PrintFunction(Instruction* instr); |
| 85 | void PrintSecondaryField(Instruction* instr); |
| 86 | void PrintUImm16(Instruction* instr); |
| 87 | void PrintSImm16(Instruction* instr); |
| 88 | void PrintXImm16(Instruction* instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 89 | void PrintXImm21(Instruction* instr); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 90 | void PrintXImm26(Instruction* instr); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 91 | void PrintCode(Instruction* instr); // For break and trap instructions. |
| 92 | // Printing of instruction name. |
| 93 | void PrintInstructionName(Instruction* instr); |
| 94 | |
| 95 | // Handle formatting of instructions and their options. |
| 96 | int FormatRegister(Instruction* instr, const char* option); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 97 | int FormatFPURegister(Instruction* instr, const char* option); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 98 | int FormatOption(Instruction* instr, const char* option); |
| 99 | void Format(Instruction* instr, const char* format); |
| 100 | void Unknown(Instruction* instr); |
| 101 | |
| 102 | // Each of these functions decodes one particular instruction type. |
| 103 | void DecodeTypeRegister(Instruction* instr); |
| 104 | void DecodeTypeImmediate(Instruction* instr); |
| 105 | void DecodeTypeJump(Instruction* instr); |
| 106 | |
| 107 | const disasm::NameConverter& converter_; |
| 108 | v8::internal::Vector<char> out_buffer_; |
| 109 | int out_buffer_pos_; |
| 110 | |
| 111 | DISALLOW_COPY_AND_ASSIGN(Decoder); |
| 112 | }; |
| 113 | |
| 114 | |
| 115 | // Support for assertions in the Decoder formatting functions. |
| 116 | #define STRING_STARTS_WITH(string, compare_string) \ |
| 117 | (strncmp(string, compare_string, strlen(compare_string)) == 0) |
| 118 | |
| 119 | |
| 120 | // Append the ch to the output buffer. |
| 121 | void Decoder::PrintChar(const char ch) { |
| 122 | out_buffer_[out_buffer_pos_++] = ch; |
| 123 | } |
| 124 | |
| 125 | |
| 126 | // Append the str to the output buffer. |
| 127 | void Decoder::Print(const char* str) { |
| 128 | char cur = *str++; |
| 129 | while (cur != '\0' && (out_buffer_pos_ < (out_buffer_.length() - 1))) { |
| 130 | PrintChar(cur); |
| 131 | cur = *str++; |
| 132 | } |
| 133 | out_buffer_[out_buffer_pos_] = 0; |
| 134 | } |
| 135 | |
| 136 | |
| 137 | // Print the register name according to the active name converter. |
| 138 | void Decoder::PrintRegister(int reg) { |
| 139 | Print(converter_.NameOfCPURegister(reg)); |
| 140 | } |
| 141 | |
| 142 | |
| 143 | void Decoder::PrintRs(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 144 | int reg = instr->RsValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 145 | PrintRegister(reg); |
| 146 | } |
| 147 | |
| 148 | |
| 149 | void Decoder::PrintRt(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 150 | int reg = instr->RtValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 151 | PrintRegister(reg); |
| 152 | } |
| 153 | |
| 154 | |
| 155 | void Decoder::PrintRd(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 156 | int reg = instr->RdValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 157 | PrintRegister(reg); |
| 158 | } |
| 159 | |
| 160 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 161 | // Print the FPUregister name according to the active name converter. |
| 162 | void Decoder::PrintFPURegister(int freg) { |
| 163 | Print(converter_.NameOfXMMRegister(freg)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | |
| 167 | void Decoder::PrintFs(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 168 | int freg = instr->RsValue(); |
| 169 | PrintFPURegister(freg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | |
| 173 | void Decoder::PrintFt(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 174 | int freg = instr->RtValue(); |
| 175 | PrintFPURegister(freg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | |
| 179 | void Decoder::PrintFd(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 180 | int freg = instr->RdValue(); |
| 181 | PrintFPURegister(freg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | |
| 185 | // Print the integer value of the sa field. |
| 186 | void Decoder::PrintSa(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 187 | int sa = instr->SaValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 188 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%d", sa); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 192 | // Print the integer value of the rd field, when it is not used as reg. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 193 | void Decoder::PrintSd(Instruction* instr) { |
| 194 | int sd = instr->RdValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 195 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%d", sd); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 199 | // Print the integer value of the rd field, when used as 'ext' size. |
| 200 | void Decoder::PrintSs1(Instruction* instr) { |
| 201 | int ss = instr->RdValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 202 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%d", ss + 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | |
| 206 | // Print the integer value of the rd field, when used as 'ins' size. |
| 207 | void Decoder::PrintSs2(Instruction* instr) { |
| 208 | int ss = instr->RdValue(); |
| 209 | int pos = instr->SaValue(); |
| 210 | out_buffer_pos_ += |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 211 | SNPrintF(out_buffer_ + out_buffer_pos_, "%d", ss - pos + 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 215 | // Print the integer value of the cc field for the bc1t/f instructions. |
| 216 | void Decoder::PrintBc(Instruction* instr) { |
| 217 | int cc = instr->FBccValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 218 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%d", cc); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | |
| 222 | // Print the integer value of the cc field for the FP compare instructions. |
| 223 | void Decoder::PrintCc(Instruction* instr) { |
| 224 | int cc = instr->FCccValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 225 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "cc(%d)", cc); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | |
| 229 | // Print 16-bit unsigned immediate value. |
| 230 | void Decoder::PrintUImm16(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 231 | int32_t imm = instr->Imm16Value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 232 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%u", imm); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | |
| 236 | // Print 16-bit signed immediate value. |
| 237 | void Decoder::PrintSImm16(Instruction* instr) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 238 | int32_t imm = ((instr->Imm16Value()) << 16) >> 16; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 239 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%d", imm); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | |
| 243 | // Print 16-bit hexa immediate value. |
| 244 | void Decoder::PrintXImm16(Instruction* instr) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 245 | int32_t imm = instr->Imm16Value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 246 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "0x%x", imm); |
| 247 | } |
| 248 | |
| 249 | |
| 250 | // Print 21-bit immediate value. |
| 251 | void Decoder::PrintXImm21(Instruction* instr) { |
| 252 | uint32_t imm = instr->Imm21Value(); |
| 253 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "0x%x", imm); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | |
| 257 | // Print 26-bit immediate value. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 258 | void Decoder::PrintXImm26(Instruction* instr) { |
| 259 | uint32_t imm = instr->Imm26Value() << kImmFieldShift; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 260 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "0x%x", imm); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | |
| 264 | // Print 26-bit immediate value. |
| 265 | void Decoder::PrintCode(Instruction* instr) { |
| 266 | if (instr->OpcodeFieldRaw() != SPECIAL) |
| 267 | return; // Not a break or trap instruction. |
| 268 | switch (instr->FunctionFieldRaw()) { |
| 269 | case BREAK: { |
| 270 | int32_t code = instr->Bits(25, 6); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 271 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, |
| 272 | "0x%05x (%d)", code, code); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 273 | break; |
| 274 | } |
| 275 | case TGE: |
| 276 | case TGEU: |
| 277 | case TLT: |
| 278 | case TLTU: |
| 279 | case TEQ: |
| 280 | case TNE: { |
| 281 | int32_t code = instr->Bits(15, 6); |
| 282 | out_buffer_pos_ += |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 283 | SNPrintF(out_buffer_ + out_buffer_pos_, "0x%03x", code); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 284 | break; |
| 285 | } |
| 286 | default: // Not a break or trap instruction. |
| 287 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 288 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | |
| 292 | // Printing of instruction name. |
| 293 | void Decoder::PrintInstructionName(Instruction* instr) { |
| 294 | } |
| 295 | |
| 296 | |
| 297 | // Handle all register based formatting in this function to reduce the |
| 298 | // complexity of FormatOption. |
| 299 | int Decoder::FormatRegister(Instruction* instr, const char* format) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 300 | DCHECK(format[0] == 'r'); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 301 | if (format[1] == 's') { // 'rs: Rs register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 302 | int reg = instr->RsValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 303 | PrintRegister(reg); |
| 304 | return 2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 305 | } else if (format[1] == 't') { // 'rt: rt register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 306 | int reg = instr->RtValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 307 | PrintRegister(reg); |
| 308 | return 2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 309 | } else if (format[1] == 'd') { // 'rd: rd register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 310 | int reg = instr->RdValue(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 311 | PrintRegister(reg); |
| 312 | return 2; |
| 313 | } |
| 314 | UNREACHABLE(); |
| 315 | return -1; |
| 316 | } |
| 317 | |
| 318 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 319 | // Handle all FPUregister based formatting in this function to reduce the |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 320 | // complexity of FormatOption. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 321 | int Decoder::FormatFPURegister(Instruction* instr, const char* format) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 322 | DCHECK(format[0] == 'f'); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 323 | if (format[1] == 's') { // 'fs: fs register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 324 | int reg = instr->FsValue(); |
| 325 | PrintFPURegister(reg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 326 | return 2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 327 | } else if (format[1] == 't') { // 'ft: ft register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 328 | int reg = instr->FtValue(); |
| 329 | PrintFPURegister(reg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 330 | return 2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 331 | } else if (format[1] == 'd') { // 'fd: fd register. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 332 | int reg = instr->FdValue(); |
| 333 | PrintFPURegister(reg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 334 | return 2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 335 | } else if (format[1] == 'r') { // 'fr: fr register. |
| 336 | int reg = instr->FrValue(); |
| 337 | PrintFPURegister(reg); |
| 338 | return 2; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 339 | } |
| 340 | UNREACHABLE(); |
| 341 | return -1; |
| 342 | } |
| 343 | |
| 344 | |
| 345 | // FormatOption takes a formatting string and interprets it based on |
| 346 | // the current instructions. The format string points to the first |
| 347 | // character of the option string (the option escape has already been |
| 348 | // consumed by the caller.) FormatOption returns the number of |
| 349 | // characters that were consumed from the formatting string. |
| 350 | int Decoder::FormatOption(Instruction* instr, const char* format) { |
| 351 | switch (format[0]) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 352 | case 'c': { // 'code for break or trap instructions. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 353 | DCHECK(STRING_STARTS_WITH(format, "code")); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 354 | PrintCode(instr); |
| 355 | return 4; |
| 356 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 357 | case 'i': { // 'imm16u or 'imm26. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 358 | if (format[3] == '1') { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 359 | DCHECK(STRING_STARTS_WITH(format, "imm16")); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 360 | if (format[5] == 's') { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 361 | DCHECK(STRING_STARTS_WITH(format, "imm16s")); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 362 | PrintSImm16(instr); |
| 363 | } else if (format[5] == 'u') { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 364 | DCHECK(STRING_STARTS_WITH(format, "imm16u")); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 365 | PrintSImm16(instr); |
| 366 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 367 | DCHECK(STRING_STARTS_WITH(format, "imm16x")); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 368 | PrintXImm16(instr); |
| 369 | } |
| 370 | return 6; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 371 | } else if (format[3] == '2' && format[4] == '1') { |
| 372 | DCHECK(STRING_STARTS_WITH(format, "imm21x")); |
| 373 | PrintXImm21(instr); |
| 374 | return 6; |
| 375 | } else if (format[3] == '2' && format[4] == '6') { |
| 376 | DCHECK(STRING_STARTS_WITH(format, "imm26x")); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 377 | PrintXImm26(instr); |
| 378 | return 6; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 379 | } |
| 380 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 381 | case 'r': { // 'r: registers. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 382 | return FormatRegister(instr, format); |
| 383 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 384 | case 'f': { // 'f: FPUregisters. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 385 | return FormatFPURegister(instr, format); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 386 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 387 | case 's': { // 'sa. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 388 | switch (format[1]) { |
| 389 | case 'a': { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 390 | DCHECK(STRING_STARTS_WITH(format, "sa")); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 391 | PrintSa(instr); |
| 392 | return 2; |
| 393 | } |
| 394 | case 'd': { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 395 | DCHECK(STRING_STARTS_WITH(format, "sd")); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 396 | PrintSd(instr); |
| 397 | return 2; |
| 398 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 399 | case 's': { |
| 400 | if (format[2] == '1') { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 401 | DCHECK(STRING_STARTS_WITH(format, "ss1")); /* ext size */ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 402 | PrintSs1(instr); |
| 403 | return 3; |
| 404 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 405 | DCHECK(STRING_STARTS_WITH(format, "ss2")); /* ins size */ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 406 | PrintSs2(instr); |
| 407 | return 3; |
| 408 | } |
| 409 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 410 | } |
| 411 | } |
| 412 | case 'b': { // 'bc - Special for bc1 cc field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 413 | DCHECK(STRING_STARTS_WITH(format, "bc")); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 414 | PrintBc(instr); |
| 415 | return 2; |
| 416 | } |
| 417 | case 'C': { // 'Cc - Special for c.xx.d cc field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 418 | DCHECK(STRING_STARTS_WITH(format, "Cc")); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 419 | PrintCc(instr); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 420 | return 2; |
| 421 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 422 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 423 | UNREACHABLE(); |
| 424 | return -1; |
| 425 | } |
| 426 | |
| 427 | |
| 428 | // Format takes a formatting string for a whole instruction and prints it into |
| 429 | // the output buffer. All escaped options are handed to FormatOption to be |
| 430 | // parsed further. |
| 431 | void Decoder::Format(Instruction* instr, const char* format) { |
| 432 | char cur = *format++; |
| 433 | while ((cur != 0) && (out_buffer_pos_ < (out_buffer_.length() - 1))) { |
| 434 | if (cur == '\'') { // Single quote is used as the formatting escape. |
| 435 | format += FormatOption(instr, format); |
| 436 | } else { |
| 437 | out_buffer_[out_buffer_pos_++] = cur; |
| 438 | } |
| 439 | cur = *format++; |
| 440 | } |
| 441 | out_buffer_[out_buffer_pos_] = '\0'; |
| 442 | } |
| 443 | |
| 444 | |
| 445 | // For currently unimplemented decodings the disassembler calls Unknown(instr) |
| 446 | // which will just print "unknown" of the instruction bits. |
| 447 | void Decoder::Unknown(Instruction* instr) { |
| 448 | Format(instr, "unknown"); |
| 449 | } |
| 450 | |
| 451 | |
| 452 | void Decoder::DecodeTypeRegister(Instruction* instr) { |
| 453 | switch (instr->OpcodeFieldRaw()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 454 | case COP1: // Coprocessor instructions. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 455 | switch (instr->RsFieldRaw()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 456 | case BC1: // bc1 handled in DecodeTypeImmediate. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 457 | UNREACHABLE(); |
| 458 | break; |
| 459 | case MFC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 460 | Format(instr, "mfc1 'rt, 'fs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 461 | break; |
| 462 | case MFHC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 463 | Format(instr, "mfhc1 'rt, 'fs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 464 | break; |
| 465 | case MTC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 466 | Format(instr, "mtc1 'rt, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 467 | break; |
| 468 | // These are called "fs" too, although they are not FPU registers. |
| 469 | case CTC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 470 | Format(instr, "ctc1 'rt, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 471 | break; |
| 472 | case CFC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 473 | Format(instr, "cfc1 'rt, 'fs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 474 | break; |
| 475 | case MTHC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 476 | Format(instr, "mthc1 'rt, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 477 | break; |
| 478 | case D: |
| 479 | switch (instr->FunctionFieldRaw()) { |
| 480 | case ADD_D: |
| 481 | Format(instr, "add.d 'fd, 'fs, 'ft"); |
| 482 | break; |
| 483 | case SUB_D: |
| 484 | Format(instr, "sub.d 'fd, 'fs, 'ft"); |
| 485 | break; |
| 486 | case MUL_D: |
| 487 | Format(instr, "mul.d 'fd, 'fs, 'ft"); |
| 488 | break; |
| 489 | case DIV_D: |
| 490 | Format(instr, "div.d 'fd, 'fs, 'ft"); |
| 491 | break; |
| 492 | case ABS_D: |
| 493 | Format(instr, "abs.d 'fd, 'fs"); |
| 494 | break; |
| 495 | case MOV_D: |
| 496 | Format(instr, "mov.d 'fd, 'fs"); |
| 497 | break; |
| 498 | case NEG_D: |
| 499 | Format(instr, "neg.d 'fd, 'fs"); |
| 500 | break; |
| 501 | case SQRT_D: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 502 | Format(instr, "sqrt.d 'fd, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 503 | break; |
| 504 | case CVT_W_D: |
| 505 | Format(instr, "cvt.w.d 'fd, 'fs"); |
| 506 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 507 | case CVT_L_D: |
| 508 | Format(instr, "cvt.l.d 'fd, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 509 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 510 | case TRUNC_W_D: |
| 511 | Format(instr, "trunc.w.d 'fd, 'fs"); |
| 512 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 513 | case TRUNC_L_D: |
| 514 | Format(instr, "trunc.l.d 'fd, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 515 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 516 | case ROUND_W_D: |
| 517 | Format(instr, "round.w.d 'fd, 'fs"); |
| 518 | break; |
| 519 | case FLOOR_W_D: |
| 520 | Format(instr, "floor.w.d 'fd, 'fs"); |
| 521 | break; |
| 522 | case CEIL_W_D: |
| 523 | Format(instr, "ceil.w.d 'fd, 'fs"); |
| 524 | break; |
| 525 | case CVT_S_D: |
| 526 | Format(instr, "cvt.s.d 'fd, 'fs"); |
| 527 | break; |
| 528 | case C_F_D: |
| 529 | Format(instr, "c.f.d 'fs, 'ft, 'Cc"); |
| 530 | break; |
| 531 | case C_UN_D: |
| 532 | Format(instr, "c.un.d 'fs, 'ft, 'Cc"); |
| 533 | break; |
| 534 | case C_EQ_D: |
| 535 | Format(instr, "c.eq.d 'fs, 'ft, 'Cc"); |
| 536 | break; |
| 537 | case C_UEQ_D: |
| 538 | Format(instr, "c.ueq.d 'fs, 'ft, 'Cc"); |
| 539 | break; |
| 540 | case C_OLT_D: |
| 541 | Format(instr, "c.olt.d 'fs, 'ft, 'Cc"); |
| 542 | break; |
| 543 | case C_ULT_D: |
| 544 | Format(instr, "c.ult.d 'fs, 'ft, 'Cc"); |
| 545 | break; |
| 546 | case C_OLE_D: |
| 547 | Format(instr, "c.ole.d 'fs, 'ft, 'Cc"); |
| 548 | break; |
| 549 | case C_ULE_D: |
| 550 | Format(instr, "c.ule.d 'fs, 'ft, 'Cc"); |
| 551 | break; |
| 552 | default: |
| 553 | Format(instr, "unknown.cop1.d"); |
| 554 | break; |
| 555 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 556 | break; |
| 557 | case S: |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 558 | UNIMPLEMENTED_MIPS(); |
| 559 | break; |
| 560 | case W: |
| 561 | switch (instr->FunctionFieldRaw()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 562 | case CVT_S_W: // Convert word to float (single). |
| 563 | Format(instr, "cvt.s.w 'fd, 'fs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 564 | break; |
| 565 | case CVT_D_W: // Convert word to double. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 566 | Format(instr, "cvt.d.w 'fd, 'fs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 567 | break; |
| 568 | default: |
| 569 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 570 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 571 | break; |
| 572 | case L: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 573 | switch (instr->FunctionFieldRaw()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 574 | case CVT_D_L: |
| 575 | Format(instr, "cvt.d.l 'fd, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 576 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 577 | case CVT_S_L: |
| 578 | Format(instr, "cvt.s.l 'fd, 'fs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 579 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 580 | case CMP_UN: |
| 581 | Format(instr, "cmp.un.d 'fd, 'fs, 'ft"); |
| 582 | break; |
| 583 | case CMP_EQ: |
| 584 | Format(instr, "cmp.eq.d 'fd, 'fs, 'ft"); |
| 585 | break; |
| 586 | case CMP_UEQ: |
| 587 | Format(instr, "cmp.ueq.d 'fd, 'fs, 'ft"); |
| 588 | break; |
| 589 | case CMP_LT: |
| 590 | Format(instr, "cmp.lt.d 'fd, 'fs, 'ft"); |
| 591 | break; |
| 592 | case CMP_ULT: |
| 593 | Format(instr, "cmp.ult.d 'fd, 'fs, 'ft"); |
| 594 | break; |
| 595 | case CMP_LE: |
| 596 | Format(instr, "cmp.le.d 'fd, 'fs, 'ft"); |
| 597 | break; |
| 598 | case CMP_ULE: |
| 599 | Format(instr, "cmp.ule.d 'fd, 'fs, 'ft"); |
| 600 | break; |
| 601 | case CMP_OR: |
| 602 | Format(instr, "cmp.or.d 'fd, 'fs, 'ft"); |
| 603 | break; |
| 604 | case CMP_UNE: |
| 605 | Format(instr, "cmp.une.d 'fd, 'fs, 'ft"); |
| 606 | break; |
| 607 | case CMP_NE: |
| 608 | Format(instr, "cmp.ne.d 'fd, 'fs, 'ft"); |
| 609 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 610 | default: |
| 611 | UNREACHABLE(); |
| 612 | } |
| 613 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 614 | case PS: |
| 615 | UNIMPLEMENTED_MIPS(); |
| 616 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 617 | default: |
| 618 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 619 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 620 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 621 | case COP1X: |
| 622 | switch (instr->FunctionFieldRaw()) { |
| 623 | case MADD_D: |
| 624 | Format(instr, "madd.d 'fd, 'fr, 'fs, 'ft"); |
| 625 | break; |
| 626 | default: |
| 627 | UNREACHABLE(); |
| 628 | } |
| 629 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 630 | case SPECIAL: |
| 631 | switch (instr->FunctionFieldRaw()) { |
| 632 | case JR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 633 | Format(instr, "jr 'rs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 634 | break; |
| 635 | case JALR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 636 | Format(instr, "jalr 'rs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 637 | break; |
| 638 | case SLL: |
| 639 | if ( 0x0 == static_cast<int>(instr->InstructionBits())) |
| 640 | Format(instr, "nop"); |
| 641 | else |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 642 | Format(instr, "sll 'rd, 'rt, 'sa"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 643 | break; |
| 644 | case SRL: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 645 | if (instr->RsValue() == 0) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 646 | Format(instr, "srl 'rd, 'rt, 'sa"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 647 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 648 | if (IsMipsArchVariant(kMips32r2)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 649 | Format(instr, "rotr 'rd, 'rt, 'sa"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 650 | } else { |
| 651 | Unknown(instr); |
| 652 | } |
| 653 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 654 | break; |
| 655 | case SRA: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 656 | Format(instr, "sra 'rd, 'rt, 'sa"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 657 | break; |
| 658 | case SLLV: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 659 | Format(instr, "sllv 'rd, 'rt, 'rs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 660 | break; |
| 661 | case SRLV: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 662 | if (instr->SaValue() == 0) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 663 | Format(instr, "srlv 'rd, 'rt, 'rs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 664 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 665 | if (IsMipsArchVariant(kMips32r2)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 666 | Format(instr, "rotrv 'rd, 'rt, 'rs"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 667 | } else { |
| 668 | Unknown(instr); |
| 669 | } |
| 670 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 671 | break; |
| 672 | case SRAV: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 673 | Format(instr, "srav 'rd, 'rt, 'rs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 674 | break; |
| 675 | case MFHI: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 676 | if (instr->Bits(25, 16) == 0) { |
| 677 | Format(instr, "mfhi 'rd"); |
| 678 | } else { |
| 679 | if ((instr->FunctionFieldRaw() == CLZ_R6) |
| 680 | && (instr->FdValue() == 1)) { |
| 681 | Format(instr, "clz 'rd, 'rs"); |
| 682 | } else if ((instr->FunctionFieldRaw() == CLO_R6) |
| 683 | && (instr->FdValue() == 1)) { |
| 684 | Format(instr, "clo 'rd, 'rs"); |
| 685 | } |
| 686 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 687 | break; |
| 688 | case MFLO: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 689 | Format(instr, "mflo 'rd"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 690 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 691 | case MULT: // @Mips32r6 == MUL_MUH. |
| 692 | if (!IsMipsArchVariant(kMips32r6)) { |
| 693 | Format(instr, "mult 'rs, 'rt"); |
| 694 | } else { |
| 695 | if (instr->SaValue() == MUL_OP) { |
| 696 | Format(instr, "mul 'rd, 'rs, 'rt"); |
| 697 | } else { |
| 698 | Format(instr, "muh 'rd, 'rs, 'rt"); |
| 699 | } |
| 700 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 701 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 702 | case MULTU: // @Mips32r6 == MUL_MUH_U. |
| 703 | if (!IsMipsArchVariant(kMips32r6)) { |
| 704 | Format(instr, "multu 'rs, 'rt"); |
| 705 | } else { |
| 706 | if (instr->SaValue() == MUL_OP) { |
| 707 | Format(instr, "mulu 'rd, 'rs, 'rt"); |
| 708 | } else { |
| 709 | Format(instr, "muhu 'rd, 'rs, 'rt"); |
| 710 | } |
| 711 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 712 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 713 | case DIV: // @Mips32r6 == DIV_MOD. |
| 714 | if (!IsMipsArchVariant(kMips32r6)) { |
| 715 | Format(instr, "div 'rs, 'rt"); |
| 716 | } else { |
| 717 | if (instr->SaValue() == DIV_OP) { |
| 718 | Format(instr, "div 'rd, 'rs, 'rt"); |
| 719 | } else { |
| 720 | Format(instr, "mod 'rd, 'rs, 'rt"); |
| 721 | } |
| 722 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 723 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 724 | case DIVU: // @Mips32r6 == DIV_MOD_U. |
| 725 | if (!IsMipsArchVariant(kMips32r6)) { |
| 726 | Format(instr, "divu 'rs, 'rt"); |
| 727 | } else { |
| 728 | if (instr->SaValue() == DIV_OP) { |
| 729 | Format(instr, "divu 'rd, 'rs, 'rt"); |
| 730 | } else { |
| 731 | Format(instr, "modu 'rd, 'rs, 'rt"); |
| 732 | } |
| 733 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 734 | break; |
| 735 | case ADD: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 736 | Format(instr, "add 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 737 | break; |
| 738 | case ADDU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 739 | Format(instr, "addu 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 740 | break; |
| 741 | case SUB: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 742 | Format(instr, "sub 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 743 | break; |
| 744 | case SUBU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 745 | Format(instr, "subu 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 746 | break; |
| 747 | case AND: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 748 | Format(instr, "and 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 749 | break; |
| 750 | case OR: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 751 | if (0 == instr->RsValue()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 752 | Format(instr, "mov 'rd, 'rt"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 753 | } else if (0 == instr->RtValue()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 754 | Format(instr, "mov 'rd, 'rs"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 755 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 756 | Format(instr, "or 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 757 | } |
| 758 | break; |
| 759 | case XOR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 760 | Format(instr, "xor 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 761 | break; |
| 762 | case NOR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 763 | Format(instr, "nor 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 764 | break; |
| 765 | case SLT: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 766 | Format(instr, "slt 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 767 | break; |
| 768 | case SLTU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 769 | Format(instr, "sltu 'rd, 'rs, 'rt"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 770 | break; |
| 771 | case BREAK: |
| 772 | Format(instr, "break, code: 'code"); |
| 773 | break; |
| 774 | case TGE: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 775 | Format(instr, "tge 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 776 | break; |
| 777 | case TGEU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 778 | Format(instr, "tgeu 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 779 | break; |
| 780 | case TLT: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 781 | Format(instr, "tlt 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 782 | break; |
| 783 | case TLTU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 784 | Format(instr, "tltu 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 785 | break; |
| 786 | case TEQ: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 787 | Format(instr, "teq 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 788 | break; |
| 789 | case TNE: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 790 | Format(instr, "tne 'rs, 'rt, code: 'code"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 791 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 792 | case MOVZ: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 793 | Format(instr, "movz 'rd, 'rs, 'rt"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 794 | break; |
| 795 | case MOVN: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 796 | Format(instr, "movn 'rd, 'rs, 'rt"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 797 | break; |
| 798 | case MOVCI: |
| 799 | if (instr->Bit(16)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 800 | Format(instr, "movt 'rd, 'rs, 'bc"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 801 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 802 | Format(instr, "movf 'rd, 'rs, 'bc"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 803 | } |
| 804 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 805 | case SELEQZ_S: |
| 806 | Format(instr, "seleqz 'rd, 'rs, 'rt"); |
| 807 | break; |
| 808 | case SELNEZ_S: |
| 809 | Format(instr, "selnez 'rd, 'rs, 'rt"); |
| 810 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 811 | default: |
| 812 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 813 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 814 | break; |
| 815 | case SPECIAL2: |
| 816 | switch (instr->FunctionFieldRaw()) { |
| 817 | case MUL: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 818 | Format(instr, "mul 'rd, 'rs, 'rt"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 819 | break; |
| 820 | case CLZ: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 821 | if (!IsMipsArchVariant(kMips32r6)) { |
| 822 | Format(instr, "clz 'rd, 'rs"); |
| 823 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 824 | break; |
| 825 | default: |
| 826 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 827 | } |
| 828 | break; |
| 829 | case SPECIAL3: |
| 830 | switch (instr->FunctionFieldRaw()) { |
| 831 | case INS: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 832 | if (IsMipsArchVariant(kMips32r2)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 833 | Format(instr, "ins 'rt, 'rs, 'sa, 'ss2"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 834 | } else { |
| 835 | Unknown(instr); |
| 836 | } |
| 837 | break; |
| 838 | } |
| 839 | case EXT: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 840 | if (IsMipsArchVariant(kMips32r2)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 841 | Format(instr, "ext 'rt, 'rs, 'sa, 'ss1"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 842 | } else { |
| 843 | Unknown(instr); |
| 844 | } |
| 845 | break; |
| 846 | } |
| 847 | default: |
| 848 | UNREACHABLE(); |
| 849 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 850 | break; |
| 851 | default: |
| 852 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 853 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | |
| 857 | void Decoder::DecodeTypeImmediate(Instruction* instr) { |
| 858 | switch (instr->OpcodeFieldRaw()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 859 | case COP1: |
| 860 | switch (instr->RsFieldRaw()) { |
| 861 | case BC1: |
| 862 | if (instr->FBtrueValue()) { |
| 863 | Format(instr, "bc1t 'bc, 'imm16u"); |
| 864 | } else { |
| 865 | Format(instr, "bc1f 'bc, 'imm16u"); |
| 866 | } |
| 867 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 868 | case BC1EQZ: |
| 869 | Format(instr, "bc1eqz 'ft, 'imm16u"); |
| 870 | break; |
| 871 | case BC1NEZ: |
| 872 | Format(instr, "bc1nez 'ft, 'imm16u"); |
| 873 | break; |
| 874 | case W: // CMP.S instruction. |
| 875 | switch (instr->FunctionValue()) { |
| 876 | case CMP_AF: |
| 877 | Format(instr, "cmp.af.S 'ft, 'fs, 'fd"); |
| 878 | break; |
| 879 | case CMP_UN: |
| 880 | Format(instr, "cmp.un.S 'ft, 'fs, 'fd"); |
| 881 | break; |
| 882 | case CMP_EQ: |
| 883 | Format(instr, "cmp.eq.S 'ft, 'fs, 'fd"); |
| 884 | break; |
| 885 | case CMP_UEQ: |
| 886 | Format(instr, "cmp.ueq.S 'ft, 'fs, 'fd"); |
| 887 | break; |
| 888 | case CMP_LT: |
| 889 | Format(instr, "cmp.lt.S 'ft, 'fs, 'fd"); |
| 890 | break; |
| 891 | case CMP_ULT: |
| 892 | Format(instr, "cmp.ult.S 'ft, 'fs, 'fd"); |
| 893 | break; |
| 894 | case CMP_LE: |
| 895 | Format(instr, "cmp.le.S 'ft, 'fs, 'fd"); |
| 896 | break; |
| 897 | case CMP_ULE: |
| 898 | Format(instr, "cmp.ule.S 'ft, 'fs, 'fd"); |
| 899 | break; |
| 900 | case CMP_OR: |
| 901 | Format(instr, "cmp.or.S 'ft, 'fs, 'fd"); |
| 902 | break; |
| 903 | case CMP_UNE: |
| 904 | Format(instr, "cmp.une.S 'ft, 'fs, 'fd"); |
| 905 | break; |
| 906 | case CMP_NE: |
| 907 | Format(instr, "cmp.ne.S 'ft, 'fs, 'fd"); |
| 908 | break; |
| 909 | default: |
| 910 | UNREACHABLE(); |
| 911 | } |
| 912 | break; |
| 913 | case L: // CMP.D instruction. |
| 914 | switch (instr->FunctionValue()) { |
| 915 | case CMP_AF: |
| 916 | Format(instr, "cmp.af.D 'ft, 'fs, 'fd"); |
| 917 | break; |
| 918 | case CMP_UN: |
| 919 | Format(instr, "cmp.un.D 'ft, 'fs, 'fd"); |
| 920 | break; |
| 921 | case CMP_EQ: |
| 922 | Format(instr, "cmp.eq.D 'ft, 'fs, 'fd"); |
| 923 | break; |
| 924 | case CMP_UEQ: |
| 925 | Format(instr, "cmp.ueq.D 'ft, 'fs, 'fd"); |
| 926 | break; |
| 927 | case CMP_LT: |
| 928 | Format(instr, "cmp.lt.D 'ft, 'fs, 'fd"); |
| 929 | break; |
| 930 | case CMP_ULT: |
| 931 | Format(instr, "cmp.ult.D 'ft, 'fs, 'fd"); |
| 932 | break; |
| 933 | case CMP_LE: |
| 934 | Format(instr, "cmp.le.D 'ft, 'fs, 'fd"); |
| 935 | break; |
| 936 | case CMP_ULE: |
| 937 | Format(instr, "cmp.ule.D 'ft, 'fs, 'fd"); |
| 938 | break; |
| 939 | case CMP_OR: |
| 940 | Format(instr, "cmp.or.D 'ft, 'fs, 'fd"); |
| 941 | break; |
| 942 | case CMP_UNE: |
| 943 | Format(instr, "cmp.une.D 'ft, 'fs, 'fd"); |
| 944 | break; |
| 945 | case CMP_NE: |
| 946 | Format(instr, "cmp.ne.D 'ft, 'fs, 'fd"); |
| 947 | break; |
| 948 | default: |
| 949 | UNREACHABLE(); |
| 950 | } |
| 951 | break; |
| 952 | case S: |
| 953 | switch (instr->FunctionValue()) { |
| 954 | case SEL: |
| 955 | Format(instr, "sel.S 'ft, 'fs, 'fd"); |
| 956 | break; |
| 957 | case SELEQZ_C: |
| 958 | Format(instr, "seleqz.S 'ft, 'fs, 'fd"); |
| 959 | break; |
| 960 | case SELNEZ_C: |
| 961 | Format(instr, "selnez.S 'ft, 'fs, 'fd"); |
| 962 | break; |
| 963 | case MIN: |
| 964 | Format(instr, "min.S 'ft, 'fs, 'fd"); |
| 965 | break; |
| 966 | case MINA: |
| 967 | Format(instr, "mina.S 'ft, 'fs, 'fd"); |
| 968 | break; |
| 969 | case MAX: |
| 970 | Format(instr, "max.S 'ft, 'fs, 'fd"); |
| 971 | break; |
| 972 | case MAXA: |
| 973 | Format(instr, "maxa.S 'ft, 'fs, 'fd"); |
| 974 | break; |
| 975 | default: |
| 976 | UNREACHABLE(); |
| 977 | } |
| 978 | break; |
| 979 | case D: |
| 980 | switch (instr->FunctionValue()) { |
| 981 | case SEL: |
| 982 | Format(instr, "sel.D 'ft, 'fs, 'fd"); |
| 983 | break; |
| 984 | case SELEQZ_C: |
| 985 | Format(instr, "seleqz.D 'ft, 'fs, 'fd"); |
| 986 | break; |
| 987 | case SELNEZ_C: |
| 988 | Format(instr, "selnez.D 'ft, 'fs, 'fd"); |
| 989 | break; |
| 990 | case MIN: |
| 991 | Format(instr, "min.D 'ft, 'fs, 'fd"); |
| 992 | break; |
| 993 | case MINA: |
| 994 | Format(instr, "mina.D 'ft, 'fs, 'fd"); |
| 995 | break; |
| 996 | case MAX: |
| 997 | Format(instr, "max.D 'ft, 'fs, 'fd"); |
| 998 | break; |
| 999 | case MAXA: |
| 1000 | Format(instr, "maxa.D 'ft, 'fs, 'fd"); |
| 1001 | break; |
| 1002 | default: |
| 1003 | UNREACHABLE(); |
| 1004 | } |
| 1005 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1006 | default: |
| 1007 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1008 | } |
| 1009 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1010 | break; // Case COP1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1011 | // ------------- REGIMM class. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1012 | case REGIMM: |
| 1013 | switch (instr->RtFieldRaw()) { |
| 1014 | case BLTZ: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1015 | Format(instr, "bltz 'rs, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1016 | break; |
| 1017 | case BLTZAL: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1018 | Format(instr, "bltzal 'rs, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1019 | break; |
| 1020 | case BGEZ: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1021 | Format(instr, "bgez 'rs, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1022 | break; |
| 1023 | case BGEZAL: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1024 | Format(instr, "bgezal 'rs, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1025 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1026 | case BGEZALL: |
| 1027 | Format(instr, "bgezall 'rs, 'imm16u"); |
| 1028 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1029 | default: |
| 1030 | UNREACHABLE(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1031 | } |
| 1032 | break; // Case REGIMM. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1033 | // ------------- Branch instructions. |
| 1034 | case BEQ: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1035 | Format(instr, "beq 'rs, 'rt, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1036 | break; |
| 1037 | case BNE: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1038 | Format(instr, "bne 'rs, 'rt, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1039 | break; |
| 1040 | case BLEZ: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1041 | if ((instr->RtFieldRaw() == 0) |
| 1042 | && (instr->RsFieldRaw() != 0)) { |
| 1043 | Format(instr, "blez 'rs, 'imm16u"); |
| 1044 | } else if ((instr->RtFieldRaw() != instr->RsFieldRaw()) |
| 1045 | && (instr->RsFieldRaw() != 0) && (instr->RtFieldRaw() != 0)) { |
| 1046 | Format(instr, "bgeuc 'rs, 'rt, 'imm16u"); |
| 1047 | } else if ((instr->RtFieldRaw() == instr->RsFieldRaw()) |
| 1048 | && (instr->RtFieldRaw() != 0)) { |
| 1049 | Format(instr, "bgezalc 'rs, 'imm16u"); |
| 1050 | } else if ((instr->RsFieldRaw() == 0) |
| 1051 | && (instr->RtFieldRaw() != 0)) { |
| 1052 | Format(instr, "blezalc 'rs, 'imm16u"); |
| 1053 | } else { |
| 1054 | UNREACHABLE(); |
| 1055 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1056 | break; |
| 1057 | case BGTZ: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1058 | if ((instr->RtFieldRaw() == 0) |
| 1059 | && (instr->RsFieldRaw() != 0)) { |
| 1060 | Format(instr, "bgtz 'rs, 'imm16u"); |
| 1061 | } else if ((instr->RtFieldRaw() != instr->RsFieldRaw()) |
| 1062 | && (instr->RsFieldRaw() != 0) && (instr->RtFieldRaw() != 0)) { |
| 1063 | Format(instr, "bltuc 'rs, 'rt, 'imm16u"); |
| 1064 | } else if ((instr->RtFieldRaw() == instr->RsFieldRaw()) |
| 1065 | && (instr->RtFieldRaw() != 0)) { |
| 1066 | Format(instr, "bltzalc 'rt, 'imm16u"); |
| 1067 | } else if ((instr->RsFieldRaw() == 0) |
| 1068 | && (instr->RtFieldRaw() != 0)) { |
| 1069 | Format(instr, "bgtzalc 'rt, 'imm16u"); |
| 1070 | } else { |
| 1071 | UNREACHABLE(); |
| 1072 | } |
| 1073 | break; |
| 1074 | case BLEZL: |
| 1075 | if ((instr->RtFieldRaw() == instr->RsFieldRaw()) |
| 1076 | && (instr->RtFieldRaw() != 0)) { |
| 1077 | Format(instr, "bgezc 'rt, 'imm16u"); |
| 1078 | } else if ((instr->RtFieldRaw() != instr->RsFieldRaw()) |
| 1079 | && (instr->RsFieldRaw() != 0) && (instr->RtFieldRaw() != 0)) { |
| 1080 | Format(instr, "bgec 'rs, 'rt, 'imm16u"); |
| 1081 | } else if ((instr->RsFieldRaw() == 0) |
| 1082 | && (instr->RtFieldRaw() != 0)) { |
| 1083 | Format(instr, "blezc 'rt, 'imm16u"); |
| 1084 | } else { |
| 1085 | UNREACHABLE(); |
| 1086 | } |
| 1087 | break; |
| 1088 | case BGTZL: |
| 1089 | if ((instr->RtFieldRaw() == instr->RsFieldRaw()) |
| 1090 | && (instr->RtFieldRaw() != 0)) { |
| 1091 | Format(instr, "bltzc 'rt, 'imm16u"); |
| 1092 | } else if ((instr->RtFieldRaw() != instr->RsFieldRaw()) |
| 1093 | && (instr->RsFieldRaw() != 0) && (instr->RtFieldRaw() != 0)) { |
| 1094 | Format(instr, "bltc 'rs, 'rt, 'imm16u"); |
| 1095 | } else if ((instr->RsFieldRaw() == 0) |
| 1096 | && (instr->RtFieldRaw() != 0)) { |
| 1097 | Format(instr, "bgtzc 'rt, 'imm16u"); |
| 1098 | } else { |
| 1099 | UNREACHABLE(); |
| 1100 | } |
| 1101 | break; |
| 1102 | case BEQZC: |
| 1103 | if (instr->RsFieldRaw() != 0) { |
| 1104 | Format(instr, "beqzc 'rs, 'imm21x"); |
| 1105 | } |
| 1106 | break; |
| 1107 | case BNEZC: |
| 1108 | if (instr->RsFieldRaw() != 0) { |
| 1109 | Format(instr, "bnezc 'rs, 'imm21x"); |
| 1110 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1111 | break; |
| 1112 | // ------------- Arithmetic instructions. |
| 1113 | case ADDI: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1114 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1115 | Format(instr, "addi 'rt, 'rs, 'imm16s"); |
| 1116 | } else { |
| 1117 | // Check if BOVC or BEQC instruction. |
| 1118 | if (instr->RsFieldRaw() >= instr->RtFieldRaw()) { |
| 1119 | Format(instr, "bovc 'rs, 'rt, 'imm16s"); |
| 1120 | } else if (instr->RsFieldRaw() < instr->RtFieldRaw()) { |
| 1121 | Format(instr, "beqc 'rs, 'rt, 'imm16s"); |
| 1122 | } else { |
| 1123 | UNREACHABLE(); |
| 1124 | } |
| 1125 | } |
| 1126 | break; |
| 1127 | case DADDI: |
| 1128 | if (IsMipsArchVariant(kMips32r6)) { |
| 1129 | // Check if BNVC or BNEC instruction. |
| 1130 | if (instr->RsFieldRaw() >= instr->RtFieldRaw()) { |
| 1131 | Format(instr, "bnvc 'rs, 'rt, 'imm16s"); |
| 1132 | } else if (instr->RsFieldRaw() < instr->RtFieldRaw()) { |
| 1133 | Format(instr, "bnec 'rs, 'rt, 'imm16s"); |
| 1134 | } else { |
| 1135 | UNREACHABLE(); |
| 1136 | } |
| 1137 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1138 | break; |
| 1139 | case ADDIU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1140 | Format(instr, "addiu 'rt, 'rs, 'imm16s"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1141 | break; |
| 1142 | case SLTI: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1143 | Format(instr, "slti 'rt, 'rs, 'imm16s"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1144 | break; |
| 1145 | case SLTIU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1146 | Format(instr, "sltiu 'rt, 'rs, 'imm16u"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1147 | break; |
| 1148 | case ANDI: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1149 | Format(instr, "andi 'rt, 'rs, 'imm16x"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1150 | break; |
| 1151 | case ORI: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1152 | Format(instr, "ori 'rt, 'rs, 'imm16x"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1153 | break; |
| 1154 | case XORI: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1155 | Format(instr, "xori 'rt, 'rs, 'imm16x"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1156 | break; |
| 1157 | case LUI: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1158 | if (!IsMipsArchVariant(kMips32r6)) { |
| 1159 | Format(instr, "lui 'rt, 'imm16x"); |
| 1160 | } else { |
| 1161 | if (instr->RsValue() != 0) { |
| 1162 | Format(instr, "aui 'rt, 'imm16x"); |
| 1163 | } else { |
| 1164 | Format(instr, "lui 'rt, 'imm16x"); |
| 1165 | } |
| 1166 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1167 | break; |
| 1168 | // ------------- Memory instructions. |
| 1169 | case LB: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1170 | Format(instr, "lb 'rt, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1171 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1172 | case LH: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1173 | Format(instr, "lh 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1174 | break; |
| 1175 | case LWL: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1176 | Format(instr, "lwl 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1177 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1178 | case LW: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1179 | Format(instr, "lw 'rt, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1180 | break; |
| 1181 | case LBU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1182 | Format(instr, "lbu 'rt, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1183 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1184 | case LHU: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1185 | Format(instr, "lhu 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1186 | break; |
| 1187 | case LWR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1188 | Format(instr, "lwr 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1189 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1190 | case PREF: |
| 1191 | Format(instr, "pref 'rt, 'imm16s('rs)"); |
| 1192 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1193 | case SB: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1194 | Format(instr, "sb 'rt, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1195 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1196 | case SH: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1197 | Format(instr, "sh 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1198 | break; |
| 1199 | case SWL: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1200 | Format(instr, "swl 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1201 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1202 | case SW: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1203 | Format(instr, "sw 'rt, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1204 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1205 | case SWR: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1206 | Format(instr, "swr 'rt, 'imm16s('rs)"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1207 | break; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1208 | case LWC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1209 | Format(instr, "lwc1 'ft, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1210 | break; |
| 1211 | case LDC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1212 | Format(instr, "ldc1 'ft, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1213 | break; |
| 1214 | case SWC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1215 | Format(instr, "swc1 'ft, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1216 | break; |
| 1217 | case SDC1: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1218 | Format(instr, "sdc1 'ft, 'imm16s('rs)"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1219 | break; |
| 1220 | default: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1221 | printf("a 0x%x \n", instr->OpcodeFieldRaw()); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1222 | UNREACHABLE(); |
| 1223 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1224 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | |
| 1228 | void Decoder::DecodeTypeJump(Instruction* instr) { |
| 1229 | switch (instr->OpcodeFieldRaw()) { |
| 1230 | case J: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1231 | Format(instr, "j 'imm26x"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1232 | break; |
| 1233 | case JAL: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1234 | Format(instr, "jal 'imm26x"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1235 | break; |
| 1236 | default: |
| 1237 | UNREACHABLE(); |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | |
| 1242 | // Disassemble the instruction at *instr_ptr into the output buffer. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1243 | int Decoder::InstructionDecode(byte* instr_ptr) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1244 | Instruction* instr = Instruction::At(instr_ptr); |
| 1245 | // Print raw instruction bytes. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1246 | out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, |
| 1247 | "%08x ", |
| 1248 | instr->InstructionBits()); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1249 | switch (instr->InstructionType()) { |
| 1250 | case Instruction::kRegisterType: { |
| 1251 | DecodeTypeRegister(instr); |
| 1252 | break; |
| 1253 | } |
| 1254 | case Instruction::kImmediateType: { |
| 1255 | DecodeTypeImmediate(instr); |
| 1256 | break; |
| 1257 | } |
| 1258 | case Instruction::kJumpType: { |
| 1259 | DecodeTypeJump(instr); |
| 1260 | break; |
| 1261 | } |
| 1262 | default: { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1263 | Format(instr, "UNSUPPORTED"); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1264 | UNSUPPORTED_MIPS(); |
| 1265 | } |
| 1266 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1267 | return Instruction::kInstrSize; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1271 | } } // namespace v8::internal |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1272 | |
| 1273 | |
| 1274 | |
| 1275 | //------------------------------------------------------------------------------ |
| 1276 | |
| 1277 | namespace disasm { |
| 1278 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1279 | const char* NameConverter::NameOfAddress(byte* addr) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1280 | v8::internal::SNPrintF(tmp_buffer_, "%p", addr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1281 | return tmp_buffer_.start(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
| 1284 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1285 | const char* NameConverter::NameOfConstant(byte* addr) const { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1286 | return NameOfAddress(addr); |
| 1287 | } |
| 1288 | |
| 1289 | |
| 1290 | const char* NameConverter::NameOfCPURegister(int reg) const { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1291 | return v8::internal::Registers::Name(reg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | |
| 1295 | const char* NameConverter::NameOfXMMRegister(int reg) const { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1296 | return v8::internal::FPURegisters::Name(reg); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1297 | } |
| 1298 | |
| 1299 | |
| 1300 | const char* NameConverter::NameOfByteCPURegister(int reg) const { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1301 | UNREACHABLE(); // MIPS does not have the concept of a byte register. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1302 | return "nobytereg"; |
| 1303 | } |
| 1304 | |
| 1305 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1306 | const char* NameConverter::NameInCode(byte* addr) const { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1307 | // The default name converter is called for unknown code. So we will not try |
| 1308 | // to access any memory. |
| 1309 | return ""; |
| 1310 | } |
| 1311 | |
| 1312 | |
| 1313 | //------------------------------------------------------------------------------ |
| 1314 | |
| 1315 | Disassembler::Disassembler(const NameConverter& converter) |
| 1316 | : converter_(converter) {} |
| 1317 | |
| 1318 | |
| 1319 | Disassembler::~Disassembler() {} |
| 1320 | |
| 1321 | |
| 1322 | int Disassembler::InstructionDecode(v8::internal::Vector<char> buffer, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1323 | byte* instruction) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1324 | v8::internal::Decoder d(converter_, buffer); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1325 | return d.InstructionDecode(instruction); |
| 1326 | } |
| 1327 | |
| 1328 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1329 | // The MIPS assembler does not currently use constant pools. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1330 | int Disassembler::ConstantPoolSizeAt(byte* instruction) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1331 | return -1; |
| 1332 | } |
| 1333 | |
| 1334 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1335 | void Disassembler::Disassemble(FILE* f, byte* begin, byte* end) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1336 | NameConverter converter; |
| 1337 | Disassembler d(converter); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1338 | for (byte* pc = begin; pc < end;) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1339 | v8::internal::EmbeddedVector<char, 128> buffer; |
| 1340 | buffer[0] = '\0'; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1341 | byte* prev_pc = pc; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1342 | pc += d.InstructionDecode(buffer, pc); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1343 | v8::internal::PrintF(f, "%p %08x %s\n", |
| 1344 | prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start()); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1345 | } |
| 1346 | } |
| 1347 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1348 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1349 | #undef UNSUPPORTED |
| 1350 | |
| 1351 | } // namespace disasm |
| 1352 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1353 | #endif // V8_TARGET_ARCH_MIPS |