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author | Ivan Maidanski <ivmai@mail.ru> | 2011-12-08 16:39:56 +0400 |
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committer | Ivan Maidanski <ivmai@mail.ru> | 2011-12-08 16:39:56 +0400 |
commit | a6d9efc45938225665f7708f98a81fb6a7724f0f (patch) | |
tree | 226daa2a700b586980ef400db31c5178489d70bc /src/atomic_ops/sysdeps/gcc/arm.h | |
parent | 9a9c43a0ff7f36c4326f696efc31579dd141156d (diff) | |
download | libatomic_ops-a6d9efc45938225665f7708f98a81fb6a7724f0f.tar.gz |
Add new macro (AO_PREFER_GENERALIZED) to favor generalized primitives
over direct assembly-based ones
* configure.ac (AO_PREFER_GENERALIZED): New AC template.
* src/atomic_ops/sysdeps/armcc/arm_v6.h (AO_test_and_set,
AO_HAVE_test_and_set, AO_fetch_and_add, AO_HAVE_fetch_and_add,
AO_fetch_and_add1, AO_HAVE_fetch_and_add1, AO_fetch_and_sub1,
AO_HAVE_fetch_and_sub1): Do not define if AO_PREFER_GENERALIZED.
* src/atomic_ops/sysdeps/gcc/arm.h (AO_test_and_set,
AO_HAVE_test_and_set, AO_fetch_and_add, AO_HAVE_fetch_and_add,
AO_fetch_and_add1, AO_HAVE_fetch_and_add1, AO_fetch_and_sub1,
AO_HAVE_fetch_and_sub1): Likewise.
* src/atomic_ops/sysdeps/gcc/avr32.h (AO_test_and_set_full,
AO_HAVE_test_and_set_full): Likewise.
* src/atomic_ops/sysdeps/gcc/hexagon.h (AO_fetch_and_add,
AO_HAVE_fetch_and_add, AO_test_and_set, AO_HAVE_test_and_set):
Likewise.
* src/atomic_ops/sysdeps/gcc/ia64.h (AO_fetch_and_add1_acquire,
AO_HAVE_fetch_and_add1_acquire, AO_fetch_and_add1_release,
AO_HAVE_fetch_and_add1_release, AO_fetch_and_sub1_acquire,
AO_HAVE_fetch_and_sub1_acquire, AO_fetch_and_sub1_release,
AO_HAVE_fetch_and_sub1_release, AO_int_fetch_and_add1_acquire,
AO_HAVE_int_fetch_and_add1_acquire, AO_int_fetch_and_add1_release,
AO_HAVE_int_fetch_and_add1_release, AO_int_fetch_and_sub1_acquire,
AO_HAVE_int_fetch_and_sub1_acquire, AO_int_fetch_and_sub1_release,
AO_HAVE_int_fetch_and_sub1_release): Likewise.
* src/atomic_ops/sysdeps/gcc/powerpc.h (AO_test_and_set,
AO_HAVE_test_and_set, AO_test_and_set_acquire,
AO_HAVE_test_and_set_acquire, AO_test_and_set_release,
AO_HAVE_test_and_set_release, AO_test_and_set_full,
AO_HAVE_test_and_set_full): Likewise.
* src/atomic_ops/sysdeps/gcc/x86.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_and_full, AO_HAVE_and_full,
AO_or_full, AO_HAVE_or_full, AO_xor_full, AO_HAVE_xor_full): Likewise.
* src/atomic_ops/sysdeps/gcc/x86_64.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_and_full, AO_HAVE_and_full, AO_or_full,
AO_HAVE_or_full, AO_xor_full, AO_HAVE_xor_full): Likewise.
* src/atomic_ops/sysdeps/hpc/ia64.h (AO_fetch_and_add1_acquire,
AO_HAVE_fetch_and_add1_acquire, AO_fetch_and_add1_release,
AO_HAVE_fetch_and_add1_release, AO_fetch_and_sub1_acquire,
AO_HAVE_fetch_and_sub1_acquire, AO_fetch_and_sub1_release,
AO_HAVE_fetch_and_sub1_release): Likewise.
* src/atomic_ops/sysdeps/ibmc/powerpc.h (AO_test_and_set_acquire,
AO_HAVE_test_and_set_acquire, AO_test_and_set_release,
AO_HAVE_test_and_set_release, AO_test_and_set_full,
AO_HAVE_test_and_set_full): Likewise.
* src/atomic_ops/sysdeps/icc/ia64.h (AO_fetch_and_add1_acquire,
AO_HAVE_fetch_and_add1_acquire, AO_fetch_and_add1_release,
AO_HAVE_fetch_and_add1_release, AO_fetch_and_sub1_acquire,
AO_HAVE_fetch_and_sub1_acquire, AO_fetch_and_sub1_release,
AO_HAVE_fetch_and_sub1_release): Likewise.
* src/atomic_ops/sysdeps/msftc/x86_64.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_fetch_and_add1_full,
AO_HAVE_fetch_and_add1_full, AO_fetch_and_sub1_full,
AO_HAVE_fetch_and_sub1_full): Likewise.
* src/atomic_ops/sysdeps/sunc/x86.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_and_full, AO_HAVE_and_full,
AO_or_full, AO_HAVE_or_full, AO_xor_full, AO_HAVE_xor_full): Likewise.
* src/atomic_ops/sysdeps/sunc/x86_64.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_and_full, AO_HAVE_and_full,
AO_or_full, AO_HAVE_or_full, AO_xor_full, AO_HAVE_xor_full): Likewise.
* src/atomic_ops/sysdeps/gcc/arm.h (AO_test_and_set_full,
AO_HAVE_test_and_set_full): Do not define if AO_PREFER_GENERALIZED
(but only in case of ARMv6+).
* src/atomic_ops/sysdeps/msftc/common32_defs.h (_InterlockedIncrement,
_InterlockedDecrement, _InterlockedExchangeAdd): Do not declare
intrinsic if both AO_PREFER_GENERALIZED and AO_ASSUME_WINDOWS98.
* src/atomic_ops/sysdeps/msftc/common32_defs.h (AO_fetch_and_add_full,
AO_HAVE_fetch_and_add_full, AO_fetch_and_add1_full,
AO_HAVE_fetch_and_add1_full, AO_fetch_and_sub1_full,
AO_HAVE_fetch_and_sub1_full): Do not define if both
AO_PREFER_GENERALIZED and AO_ASSUME_WINDOWS98.
* src/atomic_ops/sysdeps/msftc/x86_64.h (_InterlockedIncrement64,
_InterlockedDecrement64, _InterlockedExchangeAdd64): Do not declare
intrinsic if AO_PREFER_GENERALIZED.
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) |