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Fixed another assert exposed by fuzzing. Now, the DisassembleVFPLdStMulFrm()

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function checks whether we have a valid submode for VLDM/VSTM (must be either
"ia" or "db") before calling ARM_AM::getAM5Opc(AMSubMode, unsigned char).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101306 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Johnny Chen 2010-04-14 22:37:17 +00:00
parent e7b52526d3
commit d1ec11a850
1 changed files with 6 additions and 0 deletions
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6
lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
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@ -1909,6 +1909,12 @@ static bool DisassembleVFPLdStMulFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
// Next comes the AM5 Opcode. // Next comes the AM5 Opcode.
ARM_AM::AMSubMode SubMode = getAMSubModeForBits(getPUBits(insn)); ARM_AM::AMSubMode SubMode = getAMSubModeForBits(getPUBits(insn));
// Must be either "ia" or "db" submode.
if (SubMode != ARM_AM::ia && SubMode != ARM_AM::db) {
errs() << "Illegal addressing mode 5 sub-mode!\n";
return false;
}
unsigned char Imm8 = insn & 0xFF; unsigned char Imm8 = insn & 0xFF;
MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM5Opc(SubMode, Imm8))); MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM5Opc(SubMode, Imm8)));