* Possible bug in objdump?
@ 2002-05-01 19:53 Unix User
2002-05-01 20:01 ` DJ Delorie
0 siblings, 1 reply; 2+ messages in thread
From: Unix User @ 2002-05-01 19:53 UTC (permalink / raw)
To: binutils
Hi,
While disassembling dhry11.c which is part of the
Dhrystone benchmarks version 1.1, objdump seems to
disassemble incorrectly. In particular, objdump deals
with the instructions "rep" and "movs" incorrectly.
So, I run:
gcc -S dhry11.c -o dhry11.s
gcc -c dhry11.c -o dhry11.o
objdump -d --no-show-raw-insn -r -s dhry11.o >
dhry11.dis
Now, dhry11.s contains the lines:
rep
movsl
The corresponding instructions in the disassembly (in
dhry11.dis) is emitted on one line as:
4c8: repz movsl %ds:(%esi),%es:(%edi)
The other instructions are disassembled correctly. So,
my question is: Is this a known bug in objdump and are
there fixes for the bug?
I can include the source file, dhry11.c, if needed.
Thanks
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Possible bug in objdump?
2002-05-01 19:53 Possible bug in objdump? Unix User
@ 2002-05-01 20:01 ` DJ Delorie
0 siblings, 0 replies; 2+ messages in thread
From: DJ Delorie @ 2002-05-01 20:01 UTC (permalink / raw)
To: anunxusr; +Cc: binutils
> In particular, objdump deals with the instructions "rep" and "movs"
> incorrectly.
"rep" isn't an instruction, it's a prefix. It belongs with the
following opcode, just like es: or a size override.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-05-01 19:53 Possible bug in objdump? Unix User
2002-05-01 20:01 ` DJ Delorie
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