mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-02-17 13:00:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

2003-03-21 Roland McGrath <roland@redhat.com>

Browse Source 
* sysdeps/i386/i486/bits/atomic.h
	(__arch_compare_and_exchange_val_64_acq): Rewrite abort-calling
	version of the macro to avoid compile-time warnings.
	[! __PIC__] (__arch_compare_and_exchange_64_acq): Rename to above.
	(__arch_compare_and_exchange_bool_64_acq): New macro.
	(atomic_exchange_and_add, atomic_add): Fix name and usage of it.
	(atomic_increment, atomic_decrement): Likewise.
This commit is contained in:
Roland McGrath 2003-03-21 11:14:51 +00:00
parent 4541b483a9
commit 26f24355d4
1 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
sysdeps/i386/i486/bits/atomic.h
View File

@ -84,7 +84,7 @@ typedef uintmax_t uatomic_max_t;
and later, but NOT on i486. */
#if 1
# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
(abort (), 0)
({ __typeof (*mem) ret = *(mem); abort (); ret = (newval); ret = (oldval); })
#else
# ifdef __PIC__
# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
@ -101,13 +101,13 @@ typedef uintmax_t uatomic_max_t;
"d" (((unsigned long long int) (oldval)) >> 32)); \
ret; })
# else
# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
({ __typeof (*mem) ret; \
__asm __volatile (LOCK "cmpxchg8b %1" \
: "=A" (ret), "=m" (*mem) \
: "b" (((unsigned long long int) (newval)) \
& 0xffffffff), \
"c" (((unsigned long long int) (newval)) >> 32), \
"c" (((unsigned long long int) (newval)) >> 32), \
"m" (*mem), "a" (((unsigned long long int) (oldval)) \
& 0xffffffff), \
"d" (((unsigned long long int) (oldval)) >> 32)); \
@ -159,8 +159,9 @@ typedef uintmax_t uatomic_max_t;
__typeof (mem) memp = (mem); \
do \
result = *memp; \
while (__arch_compare_and_exchange_64_acq (memp, result + addval, \
result)); \
while (__arch_compare_and_exchange_val_64_acq (memp, \
result + addval, \
result) == result); \
} \
result; })
@ -189,9 +190,8 @@ typedef uintmax_t uatomic_max_t;
__typeof (mem) memp = (mem); \
do \
oldval = *memp; \
while (__arch_compare_and_exchange_64_acq (memp, \
oldval + addval, \
oldval)); \
while (__arch_compare_and_exchange_val_64_acq \
(memp, oldval + addval, oldval) == oldval); \
} \
})
@ -253,8 +253,8 @@ typedef uintmax_t uatomic_max_t;
__typeof (mem) memp = (mem); \
do \
oldval = *memp; \
while (__arch_compare_and_exchange_64_acq (memp, oldval + 1, \
oldval)); \
while (__arch_compare_and_exchange_val_64_acq \
(memp, oldval + 1, oldval) == oldval); \
} \
})
@ -297,8 +297,8 @@ typedef uintmax_t uatomic_max_t;
__typeof (mem) memp = (mem); \
do \
oldval = *memp; \
while (__arch_compare_and_exchange_64_acq (memp, oldval - 1, \
oldval)); \
while (__arch_compare_and_exchange_val_64_acq \
(memp, oldval - 1, oldval) == oldval); \
} \
})