[X86] movdiri and movdir64b instructions
Reviewers: spatel, craig.topper, RKSimon
Reviewed By: craig.topper, RKSimon
Differential Revision: https://reviews.llvm.org/D45983
llvm-svn: 331248
diff --git a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
index 41c6664..650e644 100644
--- a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
+++ b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
@@ -1057,14 +1057,15 @@
}
/*
- * Absolute moves and umonitor need special handling.
+ * Absolute moves, umonitor, and movdir64b need special handling.
* -For 16-bit mode because the meaning of the AdSize and OpSize prefixes are
* inverted w.r.t.
* -For 32-bit mode we need to ensure the ADSIZE prefix is observed in
* any position.
*/
if ((insn->opcodeType == ONEBYTE && ((insn->opcode & 0xFC) == 0xA0)) ||
- (insn->opcodeType == TWOBYTE && (insn->opcode == 0xAE))) {
+ (insn->opcodeType == TWOBYTE && (insn->opcode == 0xAE)) ||
+ (insn->opcodeType == THREEBYTE_38 && insn->opcode == 0xF8)) {
/* Make sure we observed the prefixes in any position. */
if (insn->hasAdSize)
attrMask |= ATTR_ADSIZE;
@@ -1074,6 +1075,7 @@
/* In 16-bit, invert the attributes. */
if (insn->mode == MODE_16BIT) {
attrMask ^= ATTR_ADSIZE;
+
/* The OpSize attribute is only valid with the absolute moves. */
if (insn->opcodeType == ONEBYTE && ((insn->opcode & 0xFC) == 0xA0))
attrMask ^= ATTR_OPSIZE;