Author: ed
Date: Sat Jun 13 13:56:06 2009
New Revision: 194110
URL: http://svn.freebsd.org/changeset/base/194110
Log:
Simplify the inline assembler (and correct potential error) of
pte_load_store().
Submitted by: Christoph Mallon
Modified:
head/sys/i386/include/pmap.h
Modified: head/sys/i386/include/pmap.h
==============================================================================
--- head/sys/i386/include/pmap.h Sat Jun 13 13:54:03 2009
(r194109)
+++ head/sys/i386/include/pmap.h Sat Jun 13 13:56:06 2009
(r194110)
@@ -362,15 +362,8 @@ pte_load(pt_entry_t *ptep)
static __inline pt_entry_t
pte_load_store(pt_entry_t *ptep, pt_entry_t pte)
{
- pt_entry_t r;
-
- __asm __volatile(
- "xchgl %0,%1"
- : "=m" (*ptep),
- "=r" (r)
- : "1" (pte),
- "m" (*ptep));
- return (r);
+ __asm volatile("xchgl %0, %1" : "+m" (*ptep), "+r" (pte));
+ return (pte);
}
#define pte_load_clear(pte) atomic_readandclear_int(pte)
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
