Re: [Valgrind-users] Illegal instruction errors (IN / OUT)

[Dirk M. <dm...@gm...>]

On Thursday 04 September 2003 20:10, Gabriel Gomiz wrote:

> Are this instructions supported in valgrind? If not, is there a complex
> technical problem in implementing them? Do you have any pointers to docs
> if I decide to give you a hand and implementing them?

they're currently not supported. Adding support as in "ignore them" would be 
fairly easy, but correct support is quite difficult. Per principle, valgrind 
has to know

a) that OUT writes a byte / word / dword and that it has to check all the bits
   it writes for definedness (or ignore some as they don't matter depending
   on the port?)

b) that IN reads a value and makes all its bits defined (but what if not
   all bits are defined?)