Re: disassemble output bug in binutils 2.14 i386 GNU-Linux with disassembly-flavor intel

[Nick Clifton]

Hi Claudio,

> it seems to me that disassemble of instructions in the
> form
>
> mov register, [register + register * 4]
>  
> are not correctly displayed with disassembly-flavor
> intel in binutils 2.14 (GNU objdump 2.14 20030612,
> GNU-Linux 2.4.xx, gcc 3.3.2, i686)
>
> AT&T syntax shows ok.
>
> Example: disassembly of opcode 8b 04 80
>
> $ objdump -d ./a.out
>
> ./a.out:     file format elf32-i386
> Disassembly of section .text:
> 08048080 <_start>:
>  8048080: 8b 04 80    mov    (%eax,%eax,4),%eax
>
> $ objdump -d --disassembler-options=intel a.out
>  
> a.out:     file format elf32-i386
> Disassembly of section .text:
> 08048080 <_start>:
>  8048080: 8b 04 80    mov    eax,DWORD PTR [eax+eax]
>
> Correct output should be instead
> mov    eax, DWORD PTR [eax + eax*4]

The good news is that this bug is fixed in the current binutils
sources held in the CVS repository, and so will be in the next
release.

Cheers
        Nick