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authorRoland McGrath <roland@gnu.org>2003-03-28 07:17:02 +0000
committerRoland McGrath <roland@gnu.org>2003-03-28 07:17:02 +0000
commit448163bae27b57b6e4b7c51e7b5974a613547db0 (patch)
tree7e2edc66ca4ca22e770cdff00da2d0dacd770f33 /sysdeps/powerpc
parent3e60b5f2346c59715a62e225eb4b9c64c285852c (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.h24
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; \
})