mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2024-11-21 01:12:26 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update.

Browse Source 
* sysdeps/i386/i486/atomicity.h: Clean up the asms.
This commit is contained in:
Ulrich Drepper 2001-04-07 00:19:07 +00:00
parent bb769ab68f
commit 5360538bd8
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ChangeLog
View File

@ -1,5 +1,7 @@
2001-04-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/i386/i486/atomicity.h: Clean up the asms.
* sysdeps/generic/e_scalb.c: Don't use FE_INVALID unless it's
available.
* sysdeps/generic/e_scalbf.c: Likewise.

10
sysdeps/i386/i486/atomicity.h
View File

@ -1,5 +1,5 @@
/* Low-level functions for atomic operations. ix86 version, x >= 4.
Copyright (C) 1997, 2000 Free Software Foundation, Inc.
Copyright (C) 1997, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -29,7 +29,7 @@ exchange_and_add (volatile uint32_t *mem, uint32_t val)
{
register uint32_t result;
__asm__ __volatile__ ("lock; xaddl %0,%2"
: "=r" (result) : "0" (val), "m" (*mem) : "memory");
: "=r" (result), "=m" (*mem) : "0" (val), "1" (*mem));
return result;
}
@ -37,8 +37,8 @@ static inline void
__attribute__ ((unused))
atomic_add (volatile uint32_t *mem, int val)
{
__asm__ __volatile__ ("lock; addl %0,%1"
: : "ir" (val), "m" (*mem) : "memory");
__asm__ __volatile__ ("lock; addl %1,%0"
: "=m" (*mem) : "ir" (val), "0" (*mem));
}
static inline char
@ -50,7 +50,7 @@ compare_and_swap (volatile long int *p, long int oldval, long int newval)
__asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0"
: "=q" (ret), "=m" (*p), "=a" (readval)
: "r" (newval), "m" (*p), "a" (oldval));
: "r" (newval), "1" (*p), "a" (oldval));
return ret;
}