diff options
Diffstat (limited to 'llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp index 4aa0afd..27eb399 100644 --- a/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp +++ b/llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp @@ -1919,11 +1919,17 @@ static DecodeStatus DecodeRegListOperand(MCInst &Inst, unsigned RegNum; unsigned RegLst = fieldFromInstruction(Insn, 21, 5); + // Empty register lists are not allowed. if (RegLst == 0) return MCDisassembler::Fail; RegNum = RegLst & 0xf; + + // RegLst values 10-15, and 26-31 are reserved. + if (RegNum > 9) + return MCDisassembler::Fail; + for (unsigned i = 0; i < RegNum; i++) Inst.addOperand(MCOperand::createReg(Regs[i])); |