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| author | Owen Anderson <resistor@mac.com> | 2011-08-09 23:05:39 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2011-08-09 23:05:39 +0000 |
| commit | 3d2e0e9db69da97b159c4788f0b1200bc901ebc4 (patch) | |
| tree | 45377074620d29f6106152a5930263b8edc3ce22 /llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | |
| parent | ecc4ffc9414c90b205c54f6851b4a08aaec4f366 (diff) | |
| download | bcm5719-llvm-3d2e0e9db69da97b159c4788f0b1200bc901ebc4.tar.gz bcm5719-llvm-3d2e0e9db69da97b159c4788f0b1200bc901ebc4.zip | |
Tighten operand checking on CPS instructions.
llvm-svn: 137172
Diffstat (limited to 'llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index d7b88560d71..a3fa138ba64 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -83,6 +83,8 @@ static bool DecodeMemMultipleWritebackInstruction(llvm::MCInst & Inst, const void *Decoder); static bool DecodeSMLAInstruction(llvm::MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder); +static bool DecodeCPSInstruction(llvm::MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder); static bool DecodeAddrModeImm12Operand(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static bool DecodeAddrMode5Operand(llvm::MCInst &Inst, unsigned Val, @@ -1139,6 +1141,9 @@ static bool DecodeCPSInstruction(llvm::MCInst &Inst, unsigned Insn, unsigned iflags = fieldFromInstruction32(Insn, 6, 3); unsigned mode = fieldFromInstruction32(Insn, 0, 5); + // imod == '01' --> UNPREDICTABLE + if (imod == 1) return false; + if (M && mode && imod && iflags) { Inst.setOpcode(ARM::CPS3p); Inst.addOperand(MCOperand::CreateImm(imod)); |
