d15851ec24
Add comment. (atomic_decrement_and_test): Add comment. 2003-03-22 Jakub Jelinek <jakub@redhat.com> * include/atomic.h (atomic_compare_and_exchange_val_acq): Add comment. Don't define if __arch_compare_and_exchange_val_32_acq is not defined. (atomic_compare_and_exchange_bool_acq): Add comment. Don't use __oldval variable in the macro, since it might be macro argument. (atomic_decrement_if_positive): Initialize __memp, remove setting of non-existent variable. (atomic_bit_test_set): Cast 1 to __typeof (*mem) before shifting. * sysdeps/ia64/bits/atomic.h (atomic_exchange_and_add): Implement using atomic_compare_and_exchange_val_acq. (atomic_decrement_if_positive, atomic_bit_test_set): Define. * sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_8_acq): Renamed from... (__arch_compare_and_exchange_bool_8_acq): ... this. (__arch_compare_and_exchange_val_16_acq): Renamed from... (__arch_compare_and_exchange_bool_16_acq): ... this. (__arch_compare_and_exchange_val_32_acq): Return old value. Renamed from... (__arch_compare_and_exchange_bool_32_acq): ... this. (__arch_compare_and_exchange_val_64_acq): Return old value. Renamed from... (__arch_compare_and_exchange_bool_64_acq): ... this. (__arch_compare_and_exchange_val_32_acq): Use __typeof for local variables types instead of assuming int. Change prefix of local variables to __arch. * sysdeps/generic/bits/atomic.h (arch_compare_and_exchange_acq): Remove. (atomic_compare_and_exchange_val_acq, atomic_compare_and_exchange_bool_acq): Define. * csu/tst-atomic.c: New test. * csu/tst-atomic-long.c: New test. * csu/Makefile (tests): Add tst-atomic and tst-atomic-long. * malloc/memusagestat.c (main): Kill warning if uint64_t is ulong. * sysdeps/s390/Versions: Add trailing newline. * sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Kill warning if INTERNAL_SYSCALL_ERROR_P doesn't use its first argument.
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdint.h>
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typedef int8_t atomic8_t;
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typedef uint8_t uatomic8_t;
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typedef int_fast8_t atomic_fast8_t;
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typedef uint_fast8_t uatomic_fast8_t;
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typedef int16_t atomic16_t;
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typedef uint16_t uatomic16_t;
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typedef int_fast16_t atomic_fast16_t;
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typedef uint_fast16_t uatomic_fast16_t;
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typedef int32_t atomic32_t;
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typedef uint32_t uatomic32_t;
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typedef int_fast32_t atomic_fast32_t;
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typedef uint_fast32_t uatomic_fast32_t;
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typedef int64_t atomic64_t;
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typedef uint64_t uatomic64_t;
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typedef int_fast64_t atomic_fast64_t;
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typedef uint_fast64_t uatomic_fast64_t;
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typedef intptr_t atomicptr_t;
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typedef uintptr_t uatomicptr_t;
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typedef intmax_t atomic_max_t;
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typedef uintmax_t uatomic_max_t;
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#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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(abort (), 0)
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#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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(abort (), 0)
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#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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({ __typeof (mem) __archmem = (mem); \
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__typeof (*mem) __archold = (oldval); \
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__asm __volatile ("cs %0,%2,%1" \
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: "+d" (__archold), "=Q" (*__archmem) \
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: "d" (newval), "m" (*__archmem) : "cc" ); \
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__archold; })
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#ifdef __s390x__
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# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
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({ __typeof (mem) __archmem = (mem); \
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__typeof (*mem) __archold = (oldval); \
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__asm __volatile ("csg %0,%2,%1" \
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: "+d" (__archold), "=Q" (*__archmem) \
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: "d" (newval), "m" (*__archmem) : "cc" ); \
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__archold; })
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#else
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/* For 31 bit we do not really need 64-bit compare-and-exchange. We can
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implement them by use of the csd instruction. The straightforward
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implementation causes warnings so we skip the definition for now. */
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# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
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(abort (), 0)
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#endif
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