diff options
Diffstat (limited to 'lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
| -rw-r--r-- | lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 2818e77afc..71cda57008 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -1003,8 +1003,12 @@ static DecodeStatus DecodeBitfieldMaskOperand(llvm::MCInst &Inst, unsigned Val, // create the final mask. unsigned msb = fieldFromInstruction32(Val, 5, 5); unsigned lsb = fieldFromInstruction32(Val, 0, 5); + uint32_t msb_mask = (1 << (msb+1)) - 1; + if (msb == 31) msb_mask = 0xFFFFFFFF; uint32_t lsb_mask = (1 << lsb) - 1; + if (lsb == 31) lsb_mask = 0xFFFFFFFF; + Inst.addOperand(MCOperand::CreateImm(~(msb_mask ^ lsb_mask))); return MCDisassembler::Success; } |