diff options
Diffstat (limited to 'disassembler/disassembler_mips.cc')
| -rw-r--r-- | disassembler/disassembler_mips.cc | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/disassembler/disassembler_mips.cc b/disassembler/disassembler_mips.cc index 1f6b87447f..eb57d339af 100644 --- a/disassembler/disassembler_mips.cc +++ b/disassembler/disassembler_mips.cc @@ -43,6 +43,7 @@ struct MipsInstruction { static const uint32_t kOpcodeShift = 26; static const uint32_t kCop1 = (17 << kOpcodeShift); +static const uint32_t kMsa = (30 << kOpcodeShift); // MSA major opcode. static const uint32_t kITypeMask = (0x3f << kOpcodeShift); static const uint32_t kJTypeMask = (0x3f << kOpcodeShift); @@ -51,6 +52,8 @@ static const uint32_t kSpecial0Mask = (0x3f << kOpcodeShift); static const uint32_t kSpecial2Mask = (0x3f << kOpcodeShift); static const uint32_t kSpecial3Mask = (0x3f << kOpcodeShift); static const uint32_t kFpMask = kRTypeMask; +static const uint32_t kMsaMask = kRTypeMask; +static const uint32_t kMsaSpecialMask = (0x3f << kOpcodeShift); static const MipsInstruction gMipsInstructions[] = { // "sll r0, r0, 0" is the canonical "nop", used in delay slots. @@ -417,6 +420,37 @@ static const MipsInstruction gMipsInstructions[] = { { kFpMask, kCop1 | 0x10, "sel", "fadt" }, { kFpMask, kCop1 | 0x1e, "max", "fadt" }, { kFpMask, kCop1 | 0x1c, "min", "fadt" }, + + // MSA instructions. + { kMsaMask | (0x1f << 21), kMsa | (0x0 << 21) | 0x1e, "and.v", "kmn" }, + { kMsaMask | (0x1f << 21), kMsa | (0x1 << 21) | 0x1e, "or.v", "kmn" }, + { kMsaMask | (0x1f << 21), kMsa | (0x2 << 21) | 0x1e, "nor.v", "kmn" }, + { kMsaMask | (0x1f << 21), kMsa | (0x3 << 21) | 0x1e, "xor.v", "kmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x0 << 23) | 0xe, "addv", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x1 << 23) | 0xe, "subv", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x0 << 23) | 0x12, "mulv", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x4 << 23) | 0x12, "div_s", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x5 << 23) | 0x12, "div_u", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x6 << 23) | 0x12, "mod_s", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x7 << 23) | 0x12, "mod_u", "Vkmn" }, + { kMsaMask | (0xf << 22), kMsa | (0x0 << 22) | 0x1b, "fadd", "Ukmn" }, + { kMsaMask | (0xf << 22), kMsa | (0x1 << 22) | 0x1b, "fsub", "Ukmn" }, + { kMsaMask | (0xf << 22), kMsa | (0x2 << 22) | 0x1b, "fmul", "Ukmn" }, + { kMsaMask | (0xf << 22), kMsa | (0x3 << 22) | 0x1b, "fdiv", "Ukmn" }, + { kMsaMask | (0x1ff << 17), kMsa | (0x19e << 17) | 0x1e, "ffint_s", "ukm" }, + { kMsaMask | (0x1ff << 17), kMsa | (0x19c << 17) | 0x1e, "ftint_s", "ukm" }, + { kMsaMask | (0x7 << 23), kMsa | (0x0 << 23) | 0xd, "sll", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x1 << 23) | 0xd, "sra", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x2 << 23) | 0xd, "srl", "Vkmn" }, + { kMsaMask | (0x7 << 23), kMsa | (0x0 << 23) | 0x9, "slli", "kmW" }, + { kMsaMask | (0x7 << 23), kMsa | (0x1 << 23) | 0x9, "srai", "kmW" }, + { kMsaMask | (0x7 << 23), kMsa | (0x2 << 23) | 0x9, "srli", "kmW" }, + { kMsaMask | (0x3ff << 16), kMsa | (0xbe << 16) | 0x19, "move.v", "km" }, + { kMsaMask | (0xf << 22), kMsa | (0x1 << 22) | 0x19, "splati", "kX" }, + { kMsaMask | (0xff << 18), kMsa | (0xc0 << 18) | 0x1e, "fill", "vkD" }, + { kMsaMask | (0x7 << 23), kMsa | (0x6 << 23) | 0x7, "ldi", "kx" }, + { kMsaSpecialMask | (0xf << 2), kMsa | (0x8 << 2), "ld", "kw" }, + { kMsaSpecialMask | (0xf << 2), kMsa | (0x9 << 2), "st", "kw" }, }; static uint32_t ReadU32(const uint8_t* ptr) { @@ -559,6 +593,125 @@ size_t DisassemblerMips::Dump(std::ostream& os, const uint8_t* instr_ptr) { case 't': args << 'f' << rt; break; case 'Z': args << (rd + 1); break; // sz ([d]ext size). case 'z': args << (rd - sa + 1); break; // sz ([d]ins, dinsu size). + case 'k': args << 'w' << sa; break; + case 'm': args << 'w' << rd; break; + case 'n': args << 'w' << rt; break; + case 'U': // MSA 1-bit df (word/doubleword), position 21. + { + int32_t df = (instruction >> 21) & 0x1; + switch (df) { + case 0: opcode += ".w"; break; + case 1: opcode += ".d"; break; + } + continue; // No ", ". + } + case 'u': // MSA 1-bit df (word/doubleword), position 16. + { + int32_t df = (instruction >> 16) & 0x1; + switch (df) { + case 0: opcode += ".w"; break; + case 1: opcode += ".d"; break; + } + continue; // No ", ". + } + case 'V': // MSA 2-bit df, position 21. + { + int32_t df = (instruction >> 21) & 0x3; + switch (df) { + case 0: opcode += ".b"; break; + case 1: opcode += ".h"; break; + case 2: opcode += ".w"; break; + case 3: opcode += ".d"; break; + } + continue; // No ", ". + } + case 'v': // MSA 2-bit df, position 16. + { + int32_t df = (instruction >> 16) & 0x3; + switch (df) { + case 0: opcode += ".b"; break; + case 1: opcode += ".h"; break; + case 2: opcode += ".w"; break; + case 3: opcode += ".d"; break; + } + continue; // No ", ". + } + case 'W': // MSA df/m. + { + int32_t df_m = (instruction >> 16) & 0x7f; + if ((df_m & (0x1 << 6)) == 0) { + opcode += ".d"; + args << (df_m & 0x3f); + break; + } + if ((df_m & (0x1 << 5)) == 0) { + opcode += ".w"; + args << (df_m & 0x1f); + break; + } + if ((df_m & (0x1 << 4)) == 0) { + opcode += ".h"; + args << (df_m & 0xf); + break; + } + if ((df_m & (0x1 << 3)) == 0) { + opcode += ".b"; + args << (df_m & 0x7); + } + break; + } + case 'w': // MSA +x(rs). + { + int32_t df = instruction & 0x3; + int32_t s10 = (instruction >> 16) & 0x3ff; + s10 -= (s10 & 0x200) << 1; // Sign-extend s10. + switch (df) { + case 0: opcode += ".b"; break; + case 1: opcode += ".h"; break; + case 2: opcode += ".w"; break; + case 3: opcode += ".d"; break; + } + args << StringPrintf("%+d(r%d)", s10 << df, rd); + break; + } + case 'X': // MSA df/n - ws[x]. + { + int32_t df_n = (instruction >> 16) & 0x3f; + if ((df_n & (0x3 << 4)) == 0) { + opcode += ".b"; + args << 'w' << rd << '[' << (df_n & 0xf) << ']'; + break; + } + if ((df_n & (0x3 << 3)) == 0) { + opcode += ".h"; + args << 'w' << rd << '[' << (df_n & 0x7) << ']'; + break; + } + if ((df_n & (0x3 << 2)) == 0) { + opcode += ".w"; + args << 'w' << rd << '[' << (df_n & 0x3) << ']'; + break; + } + if ((df_n & (0x3 << 1)) == 0) { + opcode += ".d"; + args << 'w' << rd << '[' << (df_n & 0x1) << ']'; + } + break; + } + case 'x': // MSA i10. + { + int32_t df = (instruction >> 21) & 0x3; + int32_t i10 = (instruction >> 11) & 0x3ff; + i10 -= (i10 & 0x200) << 1; // Sign-extend i10. + switch (df) { + case 0: opcode += ".b"; break; + case 1: opcode += ".h"; break; + case 2: opcode += ".w"; break; + case 3: opcode += ".d"; break; + } + args << i10; + break; + } } if (*(args_fmt + 1)) { args << ", "; |