diff options
Diffstat (limited to 'llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp index 878bc23dbab..81bbe3003e2 100644 --- a/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp +++ b/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp @@ -340,6 +340,15 @@ static DecodeStatus DecodeSimm19Lsl2(MCInst &Inst, unsigned Insn, static DecodeStatus DecodeSimm18Lsl3(MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder); +static DecodeStatus DecodeSimm9SP(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder); + +static DecodeStatus DecodeANDI16Imm(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder); + +static DecodeStatus DecodeUImm5lsl2(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder); + /// INSVE_[BHWD] have an implicit operand that the generated decoder doesn't /// handle. template <typename InsnType> @@ -1591,6 +1600,36 @@ static DecodeStatus DecodeSimm18Lsl3(MCInst &Inst, unsigned Insn, return MCDisassembler::Success; } +static DecodeStatus DecodeSimm9SP(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder) { + int32_t DecodedValue; + switch (Insn) { + case 0: DecodedValue = 256; break; + case 1: DecodedValue = 257; break; + case 510: DecodedValue = -258; break; + case 511: DecodedValue = -257; break; + default: DecodedValue = SignExtend32<9>(Insn); break; + } + Inst.addOperand(MCOperand::CreateImm(DecodedValue << 2)); + return MCDisassembler::Success; +} + +static DecodeStatus DecodeANDI16Imm(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder) { + // Insn must be >= 0, since it is unsigned that condition is always true. + assert(Insn < 16); + int32_t DecodedValues[] = {128, 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, + 255, 32768, 65535}; + Inst.addOperand(MCOperand::CreateImm(DecodedValues[Insn])); + return MCDisassembler::Success; +} + +static DecodeStatus DecodeUImm5lsl2(MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder) { + Inst.addOperand(MCOperand::CreateImm(Insn << 2)); + return MCDisassembler::Success; +} + static DecodeStatus DecodeRegListOperand(MCInst &Inst, unsigned Insn, uint64_t Address, |
