diff options
Diffstat (limited to 'src/atomic_ops/sysdeps/gcc/arm.h')
| -rw-r--r-- | src/atomic_ops/sysdeps/gcc/arm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/arm.h b/src/atomic_ops/sysdeps/gcc/arm.h index 4f14271..4496d9a 100644 --- a/src/atomic_ops/sysdeps/gcc/arm.h +++ b/src/atomic_ops/sysdeps/gcc/arm.h @@ -145,6 +145,7 @@ AO_INLINE void AO_store(volatile AO_t *addr, AO_t value) interrupt latencies. LDREX, STREX are more flexible, other instructions can be done between the LDREX and STREX accesses." */ +#ifndef AO_PREFER_GENERALIZED #if !defined(AO_FORCE_USE_SWP) || defined(__thumb2__) /* But, on the other hand, there could be a considerable performance */ /* degradation in case of a race. Eg., test_atomic.c executing */ @@ -238,6 +239,7 @@ AO_fetch_and_sub1(volatile AO_t *p) return result; } #define AO_HAVE_fetch_and_sub1 +#endif /* !AO_PREFER_GENERALIZED */ /* NEC LE-IT: compare and swap */ #ifndef AO_GENERALIZE_ASM_BOOL_CAS @@ -351,6 +353,8 @@ AO_fetch_compare_and_swap(volatile AO_t *addr, AO_t old_val, AO_t new_val) #endif /* __ARM_ARCH_x */ #if !defined(AO_HAVE_test_and_set_full) && !defined(AO_HAVE_test_and_set) \ + && (!defined(AO_PREFER_GENERALIZED) \ + || !defined(AO_HAVE_fetch_compare_and_swap)) \ && !defined(__ARM_ARCH_2__) && !defined(__ARM_ARCH_6M__) AO_INLINE AO_TS_VAL_t AO_test_and_set_full(volatile AO_TS_t *addr) |