Displaying 4 results from an estimated 4 matches for "readprefixes".
2014 Mar 31
2
[LLVMdev] registerSize on X86 confused?
Hi,
In file X86DisassemblerDecoder.c, we have function readPrefixes() with
below code:
.....
} else if (insn->mode == MODE_32BIT) {
insn->registerSize = (hasOpSize ? 2 : 4);
insn->addressSize = (hasAdSize ? 2 : 4);
insn->displacementSize = (hasAdSize ? 2 : 4);
insn->immediateSize = (hasOpSize ? 2 : 4);
}
.......
2014 Apr 02
2
[LLVMdev] registerSize on X86 confused?
...to prefixes and operand size.
On Tue, Apr 1, 2014 at 4:43 PM, Jun Koi <junkoi2004 at gmail.com> wrote:
>
>
>
> On Mon, Mar 31, 2014 at 11:48 PM, Jun Koi <junkoi2004 at gmail.com> wrote:
>
>> Hi,
>>
>> In file X86DisassemblerDecoder.c, we have function readPrefixes() with
>> below code:
>>
>> .....
>> } else if (insn->mode == MODE_32BIT) {
>> insn->registerSize = (hasOpSize ? 2 : 4);
>> insn->addressSize = (hasAdSize ? 2 : 4);
>> insn->displacementSize = (hasAdSize ? 2 : 4);
&g...
2013 Sep 12
1
[LLVMdev] [patch] remove redundant code in X86DisassemblerDecoder.c
...iff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index 20e61da..3932ea1 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -550,11 +550,6 @@ static int readPrefixes(struct InternalInstruction*
insn) {
insn->addressSize = (hasAdSize ? 4 : 8);
insn->displacementSize = 4;
insn->immediateSize = 4;
- } else if (insn->rexPrefix) {
- insn->registerSize = (hasOpSize ? 2 : 4);
- insn->addressSize...
2010 Dec 22
1
[LLVMdev] X86 disassembler 0x66 prefix
...| llvm-mc
--disassemble
pushl %ebx
<stdin>:1:6: warning: invalid instruction encoding
0x53 0x66 0x0f 0x6f 0x8f 0x00 0x00 0x00 0x00
^
I attach a patch, but I'm not really familiar with this code, so if someone
can review/correct, it would be great.
The problem is between readPrefixes and getId : prefixLocation depends on
buffer position, but necessaryPrefixLocation is never updated to match
buffer position.
Cheers,
Olivier.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101222/4e629a89/...