lkml.org 
[lkml]   [2005]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: out-of-line x86 "put_user()" implementation
On Mon, Feb 07, 2005 at 05:20:06PM -0800, Linus Torvalds wrote:
> +#define __put_user_8(x, ptr) __asm__ __volatile__("call __put_user_8":"=A" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))

This is not constrained enough. The compiler could choose to put the
return value in edx. You want

__asm__ __volatile__("call __put_user_8":"=a" (__ret_pu)
: "A" ((typeof(*(ptr)))(x)), "c" (ptr))


r~
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:10    [from the cache]
©2003-2011 Jasper Spaans