good disassembler for mixed 16bit and 32bit code?

Hi,

I am wring some code that mix 16bit and 32bit code in asm and C. To
fight some bugs I am having, I need to diassemble the code.
Unfortunately I found that objdump is horrible: it very often produces
bad disassembly that is very different from the source, so I cannot
understand where the problem is.

I use objdump with option "-S -d". So could anybody tell if if there
is a way to have objdump worked better?

Or: Is there a more reliable disassembler than objdump for what I am
doing?

Thanks,
J

"junkoi" <spamtrap@crayne.org> wrote in message
news:4b84e752-f698-4555-a9de-5794d02fe139@c19g2000prf.googlegroups.com...
> I am wring some code that mix 16bit and 32bit code in asm and C. To
> fight some bugs I am having, I need to diassemble the code.
> Unfortunately I found that objdump is horrible: it very often produces
> bad disassembly that is very different from the source, so I cannot
> understand where the problem is.
>

It's likely that objdump is 32-bit only...

> I use objdump with option "-S -d". So could anybody tell if if there
> is a way to have objdump worked better?
>
> Or: Is there a more reliable disassembler than objdump for what I am
> doing?
>

I was using NDISASM (comes with NASM assembler) to check your code the other
day.  It uses a very different syntax from GNU AS.  I also use two other
disassemblers rarely: WDIS (Watcom's disassembler - TASM style syntax) and
objdump...

Sorry...


Rod Pemberton

Rod Pemberton wrote:
> "junkoi" <spamtrap@crayne.org> wrote in message
> news:4b84e752-f698-4555-a9de-5794d02fe139@c19g2000prf.googlegroups.com...
> 
...
> It's likely that objdump is 32-bit only...
> 
>
> I was using NDISASM (comes with NASM assembler) to check your code the oth
er
> day.

Ndisasm won't do mixed 16- and 32-bit code in one gulp. You'd have to
disassemble once with "-b 16" and once with "-b 32", and cut-and-paste
the two together. Might need other command line switches to set an
origin, a synch point, and/or to skip sections to make it pretty. Not
very convenient, but it should do the job, if you can't find anything
better...

Best,
Frank