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| author | Roland McGrath <roland@gnu.org> | 2003-03-28 07:17:02 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2003-03-28 07:17:02 +0000 |
| commit | 448163bae27b57b6e4b7c51e7b5974a613547db0 (patch) | |
| tree | 7e2edc66ca4ca22e770cdff00da2d0dacd770f33 /sysdeps/powerpc | |
| parent | 3e60b5f2346c59715a62e225eb4b9c64c285852c (diff) | |
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2003-03-27 Roland McGrath <roland@redhat.com>
* sysdeps/powerpc/bits/atomic.h [! __powerpc64__]
(__arch_atomic_decrement_if_positive_64): Fix bogus definition.
Diffstat (limited to 'sysdeps/powerpc')
| -rw-r--r-- | sysdeps/powerpc/bits/atomic.h | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/sysdeps/powerpc/bits/atomic.h b/sysdeps/powerpc/bits/atomic.h index 7028d73135..721627659b 100644 --- a/sysdeps/powerpc/bits/atomic.h +++ b/sysdeps/powerpc/bits/atomic.h @@ -68,13 +68,13 @@ typedef uintmax_t uatomic_max_t; #ifdef __powerpc64__ /* - * The 32-bit exchange_bool is different on powerpc64 because the subf - * does signed 64-bit arthmatic while the lwarx is 32-bit unsigned + * The 32-bit exchange_bool is different on powerpc64 because the subf + * does signed 64-bit arthmatic while the lwarx is 32-bit unsigned * (a load word and zero (high 32) form). * In powerpc64 register values are 64-bit by default, including oldval. * Net we need to extend sign word the result of lwarx to 64-bit so the * 64-bit subtract from gives the expected result and sets the condition - * correctly. + * correctly. */ # define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \ ({ \ @@ -134,7 +134,7 @@ typedef uintmax_t uatomic_max_t; : "cr0"); \ __val; \ }) - + # define __arch_atomic_decrement_if_positive_64(mem) \ ({ int __val, __tmp; \ __asm __volatile ("1: ldarx %0,0,%3\n" \ @@ -175,7 +175,7 @@ typedef uintmax_t uatomic_max_t; # define __arch_atomic_exchange_and_add_64(mem, value) \ ({ abort (); (*mem) = (value); }) # define __arch_atomic_decrement_if_positive_64(mem) \ - ({ abort (); (*mem) = (value); }) + ({ abort (); (*mem)--; }) #endif #define __arch_atomic_exchange_32(mem, value) \ @@ -203,8 +203,8 @@ typedef uintmax_t uatomic_max_t; : "cr0"); \ __val; \ }) - -#define __arch_atomic_decrement_if_positive_32(mem) \ + +#define __arch_atomic_decrement_if_positive_32(mem) \ ({ int __val, __tmp; \ __asm __volatile ("1: lwarx %0,0,%3\n" \ " cmpwi 0,%0,0\n" \ @@ -246,13 +246,13 @@ typedef uintmax_t uatomic_max_t; /* Decrement *MEM if it is > 0, and return the old value. */ -#define atomic_decrement_if_positive(mem) \ - ({ __typeof (*(mem)) __result; \ +#define atomic_decrement_if_positive(mem) \ + ({ __typeof (*(mem)) __result; \ if (sizeof (*mem) == 4) \ - __result = __arch_atomic_decrement_if_positive_32 (mem); \ + __result = __arch_atomic_decrement_if_positive_32 (mem); \ else if (sizeof (*mem) == 8) \ - __result = __arch_atomic_decrement_if_positive_64 (mem); \ - else \ + __result = __arch_atomic_decrement_if_positive_64 (mem); \ + else \ abort (); \ __result; \ }) |