From:	wmcgugan AT netcomuk DOT co DOT uk (William McGugan)
Newsgroups:	comp.os.msdos.djgpp
Subject:	What registers do I have to save when using external assembler functions?
Date:	Mon, 09 Jun 1997 18:55:06 GMT
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

What registers do I have to save when using external assembler
functions? I'm asking because my assembly functions crash with -O, and
I thought it might be due to DJGPP using a register variable that was
corrupted my asm functions.

I have declared all my global variables and external functions as
volatile, but that doesn't seem to help.

Thanks.


William McGugan
http://www.netcomuk.co.uk/~wmcgugan

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