delta/libatomic_ops.git/src/atomic_ops, branch atomics-exp

Avoid __atomic_and/or/xor_fetch if unsupported (clang/arm-v5te)

2016-04-13T23:19:58+00:00

* src/atomic_ops/sysdeps/gcc/arm.h (AO_SKIPATOMIC_ANY_and_ANY,
AO_SKIPATOMIC_ANY_or_ANY, AO_SKIPATOMIC_ANY_xor_ANY): Define new
internal macro (before include "generic.h") if
AO_GCC_ATOMIC_TEST_AND_SET and __clang__, and not AO_ARM_HAVE_LDREX.
* src/atomic_ops/sysdeps/gcc/generic-arithm.h: Regenerate.
* src/atomic_ops/sysdeps/gcc/generic-arithm.template
(AO_XSIZE_and_XBAR): Do not define if AO_SKIPATOMIC_ANY_and_ANY.
* src/atomic_ops/sysdeps/gcc/generic-arithm.template
(AO_XSIZE_or_XBAR): Do not define if AO_SKIPATOMIC_ANY_or_ANY.
* src/atomic_ops/sysdeps/gcc/generic-arithm.template
(AO_XSIZE_xor_XBAR): Do not define if AO_SKIPATOMIC_ANY_xor_ANY.

Use GCC atomic intrinsics for ARM (gcc 4.8+ and clang 3.5+)

2016-04-11T22:08:45+00:00

* src/atomic_ops/sysdeps/gcc/arm.h (AO_GCC_ATOMIC_TEST_AND_SET): Define
if gcc 4.8+ or clang 3.5+ or AO_PREFER_BUILTIN_ATOMICS unless
AO_DISABLE_GCC_ATOMICS.
* src/atomic_ops/sysdeps/gcc/arm.h (AO_nop_write, AO_store,
AO_char_store, AO_short_store): Do not define (in assembly code) if
AO_PREFER_BUILTIN_ATOMICS.
* src/atomic_ops/sysdeps/gcc/arm.h (AO_SKIPATOMIC_store,
AO_SKIPATOMIC_store_release, AO_SKIPATOMIC_char_store,
AO_SKIPATOMIC_char_store_release, AO_SKIPATOMIC_short_store,
AO_SKIPATOMIC_short_store_release, AO_SKIPATOMIC_int_store,
AO_SKIPATOMIC_int_store_release): Define if AO_BROKEN_TASKSWITCH_CLREX.
* src/atomic_ops/sysdeps/gcc/arm.h (AO_nop_full, AO_test_and_set,
AO_fetch_and_add, AO_fetch_and_add1, AO_fetch_and_sub1, AO_and, AO_or,
AO_xor, AO_char_fetch_and_add, AO_short_fetch_and_add,
AO_compare_and_swap, AO_fetch_compare_and_swap, AO_double_load,
AO_double_store, AO_double_compare_and_swap, AO_test_and_set_full): Do
not define (in assembly code) if AO_GCC_ATOMIC_TEST_AND_SET.
* src/atomic_ops/sysdeps/gcc/arm.h: Do not include atomic_store.h,
all_atomic_only_load.h, char_atomic_store.h, short_atomic_store.h,
all_aligned_atomic_load_store.h if AO_GCC_ATOMIC_TEST_AND_SET.
* src/atomic_ops/sysdeps/gcc/arm.h: Include generic.h (at the end of
the file) if AO_GCC_ATOMIC_TEST_AND_SET.
* src/atomic_ops/sysdeps/gcc/generic-small.h: Regenerate.
* src/atomic_ops/sysdeps/gcc/generic-small.template (AO_XSIZE_store):
Do not define if AO_SKIPATOMIC_XSIZE_store.
* src/atomic_ops/sysdeps/gcc/generic-small.template
(AO_XSIZE_store_release): Do not define if
AO_SKIPATOMIC_XSIZE_store_release.

Use GCC atomic intrinsics for MIPS (GCC 4.9+ and clang 3.5+)

2016-04-08T20:30:52+00:00

* src/atomic_ops/sysdeps/gcc/mips.h: Include generic.h and do not
include all_aligned_atomic_load_store.h if AO_PREFER_BUILTIN_ATOMICS or
GCC 4.9+ or clang 3.5+ unless AO_DISABLE_GCC_ATOMICS.
* src/atomic_ops/sysdeps/gcc/mips.h (AO_MIPS_SET_ISA, AO_MIPS_LL_1,
AO_MIPS_SC, AO_MIPS_LL, AO_nop_full, AO_fetch_and_add, AO_test_and_set,
AO_compare_and_swap, AO_fetch_compare_and_swap): Do not define if
generic.h included.

Implement CAS_acquire/release/full using __atomic_compare_exchange_n (gcc)

2016-04-08T08:29:08+00:00

* src/atomic_ops/sysdeps/gcc/generic-small.h: Regenerate.
* src/atomic_ops/sysdeps/gcc/generic-small.template
(AO_XSIZE_fetch_compare_and_swap, AO_XSIZE_compare_and_swap): Use
__atomic_compare_exchange_n(RELAXED) instead of
__sync_val/bool_compare_and_swap.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_double_compare_and_swap):
Likewise.
* src/atomic_ops/sysdeps/gcc/generic-small.template
[AO_GCC_HAVE_XSIZE_SYNC_CAS] (AO_XSIZE_fetch_compare_and_swap_acquire,
AO_XSIZE_fetch_compare_and_swap_release,
AO_XSIZE_fetch_compare_and_swap_full): New inline function; remove
TODO item.
* src/atomic_ops/sysdeps/gcc/generic-small.template
[AO_GCC_HAVE_XSIZE_SYNC_CAS && !AO_GENERALIZE_ASM_BOOL_CAS]
(AO_XSIZE_compare_and_swap_acquire, AO_XSIZE_compare_and_swap_release,
AO_XSIZE_compare_and_swap_full): Likewise.
* src/atomic_ops/sysdeps/gcc/generic.h [AO_GCC_HAVE_double_SYNC_CAS]
(AO_double_compare_and_swap_acquire,
AO_double_compare_and_swap_release, AO_double_compare_and_swap_full):
Likewise.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_compare_and_swap_acquire):
Reformat code.

Avoid atomic_compare_exchange_n if no __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n

2016-04-07T07:28:27+00:00

* src/atomic_ops/sysdeps/gcc/aarch64.h (AO_GCC_FORCE_HAVE_CAS,
AO_GCC_HAVE_double_SYNC_CAS): Define macro before include generic.h
if __clang__ (workaround).
* src/atomic_ops/sysdeps/gcc/generic-small.h: Regenerate.
* src/atomic_ops/sysdeps/gcc/generic-small.template
(AO_XSIZE_fetch_compare_and_swap, AO_XSIZE_compare_and_swap): Do not
define unless AO_GCC_HAVE_XSIZE_SYNC_CAS.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_GCC_HAVE_char_SYNC_CAS,
AO_GCC_HAVE_short_SYNC_CAS, AO_GCC_HAVE_int_SYNC_CAS,
AO_GCC_HAVE_SYNC_CAS): New internal macro (based on
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_ or AO_GCC_FORCE_HAVE_CAS presence).
* src/atomic_ops/sysdeps/gcc/generic.h (AO_GCC_HAVE_double_SYNC_CAS):
New internal macro if AO_HAVE_DOUBLE_PTR_STORAGE.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_double_compare_and_swap):
Check AO_GCC_HAVE_double_SYNC_CAS instead of AO_HAVE_DOUBLE_PTR_STORAGE.

Eliminate redundant lwsync 2nd call in CAS_full on fail (gcc/PowerPC)

2016-04-05T21:10:56+00:00

* src/atomic_ops/sysdeps/gcc/powerpc.h (AO_compare_and_swap_full,
AO_fetch_compare_and_swap_full): Do not call AO_lwsync 2nd time if
CAS is not successful.

Define AO_TS_SET as __GCC_ATOMIC_TEST_AND_SET_TRUEVAL if applicable

2016-04-04T06:58:22+00:00

* src/atomic_ops/sysdeps/gcc/aarch64.h (AO_GCC_ATOMIC_TEST_AND_SET):
Define (before include test_and_set_t_is_ao_t.h).
* src/atomic_ops/sysdeps/gcc/nios2.h (AO_GCC_ATOMIC_TEST_AND_SET):
Likewise.
* src/atomic_ops/sysdeps/test_and_set_t_is_ao_t.h: Refine comment.
* src/atomic_ops/sysdeps/test_and_set_t_is_char.h: Likewise.
* src/atomic_ops/sysdeps/test_and_set_t_is_ao_t.h (AO_TS_SET_TRUEVAL):
New internal macro (defined via __GCC_ATOMIC_TEST_AND_SET_TRUEVAL).
* src/atomic_ops/sysdeps/test_and_set_t_is_char.h (AO_TS_SET_TRUEVAL):
Likewise.
* src/atomic_ops/sysdeps/test_and_set_t_is_ao_t.h (AO_TS_val): Use
AO_TS_SET_TRUEVAL instead of 1.
* src/atomic_ops/sysdeps/test_and_set_t_is_char.h (AO_BYTE_TS_val):
Use AO_TS_SET_TRUEVAL instead of 0xff; reformat code.
* src/atomic_ops/sysdeps/test_and_set_t_is_char.h (AO_TS_t): Move down
(to be after AO_TS_SET).

New macro AO_PREFER_BUILTIN_ATOMICS to rely on C11 atomics fully (AArch64)

2016-04-01T17:34:30+00:00

If AO_PREFER_BUILTIN_ATOMICS is defined then inline assembly
implementation is not used.

* src/atomic_ops/sysdeps/gcc/aarch64.h (AO_SKIPATOMIC_double_load,
AO_SKIPATOMIC_double_load_acquire): Define if AO_PREFER_BUILTIN_ATOMICS.
* src/atomic_ops/sysdeps/gcc/aarch64.h (AO_nop_write, AO_double_load,
AO_double_load_acquire, AO_double_store, AO_double_store_release,
AO_double_compare_and_swap, AO_double_compare_and_swap_acquire,
AO_double_compare_and_swap_release, AO_double_compare_and_swap_full):
Do not define if AO_PREFER_BUILTIN_ATOMICS.
* src/atomic_ops/sysdeps/gcc/aarch64.h (AO_nop_write): Add comment;
remove TODO.
* src/atomic_ops/sysdeps/gcc/generic.h: Remove TODO about including
this header for other targets.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_double_load): Do not define
if AO_SKIPATOMIC_double_load.
* src/atomic_ops/sysdeps/gcc/generic.h (AO_double_load_acquire): Do not
define if AO_SKIPATOMIC_double_load_acquire.

Add initial nios2 architecture support

2016-03-15T07:09:26+00:00

* src/Makefile.am (nobase_private_HEADERS): Add nios2.h.
* src/atomic_ops.h: Include nios2.h if __nios2__.
* src/atomic_ops/sysdeps/gcc/nios2.h: New file.

Initial ibmc/powerpc (xlc) support

2016-03-04T18:10:59+00:00

* src/atomic_ops/sysdeps/ibmc/powerpc.h: Include
test_and_set_t_is_ao_t.h.
* src/atomic_ops/sysdeps/ibmc/powerpc.h (AO_test_and_set,
AO_fetch_compare_and_swap): Implement.