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| author | Johnny Chen <johnny.chen@apple.com> | 2011-03-24 17:04:22 +0000 |
|---|---|---|
| committer | Johnny Chen <johnny.chen@apple.com> | 2011-03-24 17:04:22 +0000 |
| commit | 1dd041083d0c80b56b2ce9252206921c00a543a1 (patch) | |
| tree | 7e4f4ebbabb64c01e7cec335205acd6337e0cdeb /llvm/lib | |
| parent | a4ec5b2c19acafaea749c8952344ac766f0d08de (diff) | |
| download | bcm5719-llvm-1dd041083d0c80b56b2ce9252206921c00a543a1.tar.gz bcm5719-llvm-1dd041083d0c80b56b2ce9252206921c00a543a1.zip | |
Add comments to the handling of opcode CPS3p to reject invalid instruction encoding,
a test case of invalid CPS3p encoding and one for invalid VLDMSDB due to regs out of range.
llvm-svn: 128220
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index cc2469f8c29..a9d41325de7 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -2946,6 +2946,8 @@ static bool DisassembleMiscFrm(MCInst &MI, unsigned Opcode, uint32_t insn, // of optional arguments is implemented. if (Opcode == ARM::CPS3p) { // Let's reject impossible imod values by returning false. + // AsmPrinter cannot handle imod=0b00, plus (imod=0b00,M=1,iflags!=0) is an + // invalid combination, so we just check for imod=0b00 here. if (slice(insn, 19, 18) == 0 || slice(insn, 19, 18) == 1) return false; MI.addOperand(MCOperand::CreateImm(slice(insn, 19, 18))); // imod |
