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From:	Martin Steuer <martin AT x DOT invalid>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Using inline asm
Date:	Fri, 26 Oct 2007 09:51:04 +0200
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Gerrit van Niekerk schrieb:
>>>    asm ("cpuid" : "=a" (iRet) : : "ebx", "ecx", "edx");
>> Thanks.  Okay, it doesn't, so correct the code...  I wasn't sure if the asm
>> directive inserted a pusha; popa combination into the stackframe, say
>> instead of push ebp; pop ebp, or used some other method.  That might mess up
>> returns...
> 
> Thanks DJ and RP - you put me on the right track.
> My example was just a simplified version to show my main problem. For other people who 
> battle with the same problem, here is my full code. The stack frame and saving of registers 
> are taken care of by GCC - I checked with GDB and the code runs without crashing :)
> 

Just a hint, for checking the generated code you may also let gcc output
the assembler source via:

gcc -S input.c -o output.S

Martin

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