Nguyen Anh Quynh wrote:
> This patch replaces the current assembly code of Extboot option rom
> with new C code. Patch is against kvm-66.
>
> This version returns an error code in case int 13 handler cannot
> handle a requested function.
>
> Signed-off-by: Nguyen Anh Quynh <[EMAIL PROTECTED]>
>
+ /* -fomit-frame-pointer might clobber %ebp */
+ pushl %ebp
+ call setup
+ popl %ebp
No, it might not. %ebx, %ebp, %esi, and %edi are guaranteed preserved;
%eax, %ecx and %edx are clobbered.
It's also prudent to call cld before jumping to C code.
-hpa
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