diff options
Diffstat (limited to 'llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index e63defed228..bc63c26b328 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -222,6 +222,8 @@ static DecodeStatus DecodeAddrModeImm12Operand(MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static DecodeStatus DecodeAddrMode5Operand(MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); +static DecodeStatus DecodeAddrMode5FP16Operand(MCInst &Inst, unsigned Val, + uint64_t Address, const void *Decoder); static DecodeStatus DecodeAddrMode7Operand(MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2BInstruction(MCInst &Inst, unsigned Insn, @@ -2183,6 +2185,7 @@ static DecodeStatus DecodeAddrMode5Operand(MCInst &Inst, unsigned Val, DecodeStatus S = MCDisassembler::Success; unsigned Rn = fieldFromInstruction(Val, 9, 4); + // U == 1 to add imm, 0 to subtract it. unsigned U = fieldFromInstruction(Val, 8, 1); unsigned imm = fieldFromInstruction(Val, 0, 8); @@ -2197,6 +2200,26 @@ static DecodeStatus DecodeAddrMode5Operand(MCInst &Inst, unsigned Val, return S; } +static DecodeStatus DecodeAddrMode5FP16Operand(MCInst &Inst, unsigned Val, + uint64_t Address, const void *Decoder) { + DecodeStatus S = MCDisassembler::Success; + + unsigned Rn = fieldFromInstruction(Val, 9, 4); + // U == 1 to add imm, 0 to subtract it. + unsigned U = fieldFromInstruction(Val, 8, 1); + unsigned imm = fieldFromInstruction(Val, 0, 8); + + if (!Check(S, DecodeGPRRegisterClass(Inst, Rn, Address, Decoder))) + return MCDisassembler::Fail; + + if (U) + Inst.addOperand(MCOperand::createImm(ARM_AM::getAM5FP16Opc(ARM_AM::add, imm))); + else + Inst.addOperand(MCOperand::createImm(ARM_AM::getAM5FP16Opc(ARM_AM::sub, imm))); + + return S; +} + static DecodeStatus DecodeAddrMode7Operand(MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder) { return DecodeGPRRegisterClass(Inst, Val, Address, Decoder); |
