Xref: news-dnh.mv.net comp.os.msdos.djgpp:2646
Path: news-dnh.mv.net!mv!news.sprintlink.net!newsfeed.internetmci.com!ncar!noao!math.arizona.edu!news.Arizona.EDU!news.Cerritos.edu!nic-nac.CSU.net!zippy.sonoma.edu!svincent
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