Re: [Valgrind-users] disInstr: unhandled instruction bytes: 0x1E 0x7 0xC3 0x8A

[Dan K. <da...@ke...>]

Wolfgang Rohdewald wrote:
> I found the offending code. This is some 20 year old assembly
> doing speed optimized BCD arithmetic (written for an 80286).
> Since I have the same code in C (much slower), I am now using
> the C code for valgrind, problem solved.
> 
> This was the assembly code:
> 
> adj2:
> 	addl   $0x7,0x8(%ebp)
> 	addl   $0x7,0xc(%ebp)
> 	pushl  %ds		<===================
> 	popl   %es		<===================
> 	ret    

The push ds, pop es sequence is extremely common, or at least
was, back in the day.  Valgrind really should support it.
- Dan

-- 
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045