commit 1e1901a2945182b9c53f2ed5c2bd471cebfdf29b
author Sean Callanan <scallanan@apple.com> Wed Feb 02 01:09:02 2011 +0000
committer Sean Callanan <scallanan@apple.com> Wed Feb 02 01:09:02 2011 +0000
tree 607175e850df311d6de006194fc291a58de3ee79
parent 31959b19a72608051888160514977875a8027dfc

Fixed a bug in the disassembler where the mandatory 0x66
prefix would be misinterpreted in some cases on 32-bit
x86 platforms.  Thanks to Olivier Meurant for identifying
the bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124709 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 7b17f1e..b6546fc 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -388,6 +388,7 @@
     }
   } else {
     unconsumeByte(insn);
+    insn->necessaryPrefixLocation = insn->readerCursor - 1;
   }
   
   if (insn->mode == MODE_16BIT) {