commit 100d86ada512e495104580b71e28599308fb7365
author Craig Topper <craig.topper@gmail.com> Mon Sep 26 05:12:43 2011 +0000
committer Craig Topper <craig.topper@gmail.com> Mon Sep 26 05:12:43 2011 +0000
tree 6a56113e075a705c7aa3ad628033776ddcb8aac0
parent c291e2f5780c3a8470113a2a58c1fa680cd54b20

Fix VEX decoding in i386 mode. Fixes PR11008.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140515 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/Disassembler/X86DisassemblerDecoder.c

diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index 9e53345..ed2cb3f 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -391,7 +391,7 @@
       return -1;
     }
     
-    if (insn->mode == MODE_64BIT || byte1 & 0x8) {
+    if (insn->mode == MODE_64BIT || (byte1 & 0xc0) == 0xc0) {
       insn->vexSize = 3;
       insn->necessaryPrefixLocation = insn->readerCursor - 1;
     }
@@ -433,7 +433,7 @@
       return -1;
     }
       
-    if (insn->mode == MODE_64BIT || byte1 & 0x8) {
+    if (insn->mode == MODE_64BIT || (byte1 & 0xc0) == 0xc0) {
       insn->vexSize = 2;
     }
     else {