diff options
Diffstat (limited to 'llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp index 6272e2d..7324fde 100644 --- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp +++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp @@ -377,7 +377,7 @@ static int readPrefixes(struct InternalInstruction *insn) { // We simulate the REX2 prefix for simplicity's sake insn->rex2ExtensionPrefix[1] = (r2FromEVEX2of4(insn->vectorExtensionPrefix[1]) << 6) | - (x2FromEVEX3of4(insn->vectorExtensionPrefix[2]) << 5) | + (uFromEVEX3of4(insn->vectorExtensionPrefix[2]) << 5) | (b2FromEVEX2of4(insn->vectorExtensionPrefix[1]) << 4); } @@ -1217,8 +1217,6 @@ static int getInstructionID(struct InternalInstruction *insn, if (zFromEVEX4of4(insn->vectorExtensionPrefix[3])) attrMask |= ATTR_EVEXKZ; - if (bFromEVEX4of4(insn->vectorExtensionPrefix[3])) - attrMask |= ATTR_EVEXB; if (isNF(insn) && !readModRM(insn) && !isCCMPOrCTEST(insn)) // NF bit is the MSB of aaa. attrMask |= ATTR_EVEXNF; @@ -1226,6 +1224,12 @@ static int getInstructionID(struct InternalInstruction *insn, else if (aaaFromEVEX4of4(insn->vectorExtensionPrefix[3]) && (insn->opcodeType != MAP4)) attrMask |= ATTR_EVEXK; + if (bFromEVEX4of4(insn->vectorExtensionPrefix[3])) { + attrMask |= ATTR_EVEXB; + if (uFromEVEX3of4(insn->vectorExtensionPrefix[2]) && !readModRM(insn) && + modFromModRM(insn->modRM) == 3) + attrMask |= ATTR_EVEXU; + } if (lFromEVEX4of4(insn->vectorExtensionPrefix[3])) attrMask |= ATTR_VEXL; if (l2FromEVEX4of4(insn->vectorExtensionPrefix[3])) |