[syslinux] [PATCH 1/1] mboot.c32: fix register constraints bug (more cleanly)

[H. Peter Anvin]

Geert Stappers wrote:
> On Wed, May 24, 2006 at 05:40:50PM +0100, Tim Deegan wrote:
>> --- syslinux-3.20-pre8/com32/modules/mboot.c.orig	2006-05-22 11:06:17.000000000 +0100
>> +++ syslinux-3.20-pre8/com32/modules/mboot.c	2006-05-24 17:34:47.000000000 +0100
>> -    asm volatile(
>> -        "movl %0, %%ebx;"
>> -        "movl $0x2badb002, %%eax;"
>> -        "jmp *%1"
>> -        : : "m" (mbi_run_addr), "r" (entry));
>> +    asm volatile ("jmp *%2" 
>> +                  : : "a" (0x2badb002), "b" (mbi_run_addr), "cdSD" (entry));
> 
> Why is the original 'jmp *%1' and the modified 'jmp *%2' ?
> (I would expect that both where '%1' )
> 

%2 is correct, since "entry" is now the third argument.

	-hpa