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From:	svincent AT zippy DOT sonoma DOT edu (Sam Vincent)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Wrapper functions??
Date:	13 Oct 1995 22:08:48 GMT
Organization:	Information Resources and Technology
Lines:	22
Nntp-Posting-Host:	zippy.sonoma.edu
To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi all,

What exactly do the interrupt handling wrapper functions do...
I've been told they take a large chunk of runtime to process and
that I should write my own assembly functions..  Well Ive done that
and I save/restore eax, ebx, ecx, and edx and a iret at the end...

I get a segfault signal and it dumps with a page fault (yes everything's
locked down) and a register dump..  It works fine (although way too slow
)  when I use C and the allocated wrappers..

The code for the assembly was the same as the C function.. (i got it
from gcc -S'ing the function...  and just adding the save/restore of regs
and the iret at the end instead of a ret...

I need to know exactly what else the wrapper functions do..
I'm at a loss here..

Thank you very much.

Sam

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