diff options
| author | Johnny Chen <johnny.chen@apple.com> | 2011-04-07 19:02:08 +0000 |
|---|---|---|
| committer | Johnny Chen <johnny.chen@apple.com> | 2011-04-07 19:02:08 +0000 |
| commit | 8dbda0b51b7a7a7b4fb16a34b421a658cb86f9f3 (patch) | |
| tree | c46cdf5fa15c763098590572c038579898d5cdc6 /lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | |
| parent | e815dab69f57da3f0ff365709491c7409cbb71bd (diff) | |
Add sanity checking for invalid register encodings for saturating instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129096 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp')
| -rw-r--r-- | lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index f4fa3de268..4933a60ee5 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -1546,6 +1546,11 @@ static bool DisassembleArithMiscFrm(MCInst &MI, unsigned Opcode, uint32_t insn, static bool DisassembleSatFrm(MCInst &MI, unsigned Opcode, uint32_t insn, unsigned short NumOps, unsigned &NumOpsAdded, BO B) { + // A8.6.183 SSAT + // if d == 15 || n == 15 then UNPREDICTABLE; + if (decodeRd(insn) == 15 || decodeRm(insn) == 15) + return false; + const TargetInstrDesc &TID = ARMInsts[Opcode]; NumOpsAdded = TID.getNumOperands() - 2; // ignore predicate operands |