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| author | Roland McGrath <roland@gnu.org> | 2003-03-21 11:14:51 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2003-03-21 11:14:51 +0000 |
| commit | 26f24355d47367d01a04fca2226675e763cded29 (patch) | |
| tree | 96112da8a3c2b0644994ace7f36832704e8a830f | |
| parent | 4541b483a9b242529bcc1c8d72d29cbd2b445873 (diff) | |
| download | glibc-26f24355d47367d01a04fca2226675e763cded29.zip glibc-26f24355d47367d01a04fca2226675e763cded29.tar.gz glibc-26f24355d47367d01a04fca2226675e763cded29.tar.bz2 | |
2003-03-21 Roland McGrath <roland@redhat.com>
* 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.
| -rw-r--r-- | sysdeps/i386/i486/bits/atomic.h | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/sysdeps/i386/i486/bits/atomic.h b/sysdeps/i386/i486/bits/atomic.h index 035905b..502d392 100644 --- a/sysdeps/i386/i486/bits/atomic.h +++ b/sysdeps/i386/i486/bits/atomic.h @@ -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); \ } \ }) |