diff options
Diffstat (limited to 'disassembler/disassembler_mips.cc')
| -rw-r--r-- | disassembler/disassembler_mips.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/disassembler/disassembler_mips.cc b/disassembler/disassembler_mips.cc index 1f513113ec..769263ec5b 100644 --- a/disassembler/disassembler_mips.cc +++ b/disassembler/disassembler_mips.cc @@ -330,8 +330,10 @@ static const MipsInstruction gMipsInstructions[] = { { kITypeMask, 55u << kOpcodeShift, "ld", "TO", }, { kITypeMask, 56u << kOpcodeShift, "sc", "TO", }, { kITypeMask, 57u << kOpcodeShift, "swc1", "tO", }, + { kJTypeMask, 58u << kOpcodeShift, "balc", "P" }, { kITypeMask | (0x1f << 16), (59u << kOpcodeShift) | (30 << 16), "auipc", "Si" }, { kITypeMask | (0x3 << 19), (59u << kOpcodeShift) | (0 << 19), "addiupc", "Sp" }, + { kITypeMask | (0x3 << 19), (59u << kOpcodeShift) | (1 << 19), "lwpc", "So" }, { kITypeMask, 61u << kOpcodeShift, "sdc1", "tO", }, { kITypeMask | (0x1f << 21), 62u << kOpcodeShift, "jialc", "Ti" }, { kITypeMask | (1 << 21), (62u << kOpcodeShift) | (1 << 21), "bnezc", "Sb" }, // TODO: de-dup? @@ -509,7 +511,15 @@ size_t DisassemblerMips::Dump(std::ostream& os, const uint8_t* instr_ptr) { } } break; - case 'P': // 26-bit offset in bc. + case 'o': // 19-bit offset in lwpc. + { + int32_t offset = (instruction & 0x7ffff) - ((instruction & 0x40000) << 1); + offset <<= 2; + args << FormatInstructionPointer(instr_ptr + offset); + args << StringPrintf(" ; %+d", offset); + } + break; + case 'P': // 26-bit offset in bc and balc. { int32_t offset = (instruction & 0x3ffffff) - ((instruction & 0x2000000) << 1); offset <<= 2; @@ -540,6 +550,7 @@ size_t DisassemblerMips::Dump(std::ostream& os, const uint8_t* instr_ptr) { } } + // TODO: Simplify this once these sequences are simplified in the compiler. // Special cases for sequences of: // pc-relative +/- 2GB branch: // auipc reg, imm |