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* sysdeps/i386/i486/bits/atomic.h: Define
atomic_compare_and_exchange_val_acq, atomic_compare_and_exchange_bool_acq, and atomic_exchange_and_add using __sync_* built-ins for gcc >= 4.1. * sysdeps/x86_64/bits/atomic.h: Likewise.
This commit is contained in:
Ulrich Drepper
parent
8980796b15
commit
038a1a9fc3
@ -1,5 +1,11 @@
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2007-01-12 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/i386/i486/bits/atomic.h: Define
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atomic_compare_and_exchange_val_acq,
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atomic_compare_and_exchange_bool_acq, and atomic_exchange_and_add
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using __sync_* built-ins for gcc >= 4.1.
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* sysdeps/x86_64/bits/atomic.h: Likewise.
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[BZ #3840]
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* scripts/check-local-headers.sh: Restrict to testing .o.d, .os.d,
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and .oS.d files.
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@ -1,4 +1,4 @@
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/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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@ -56,26 +56,33 @@ typedef uintmax_t uatomic_max_t;
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#endif
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#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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#if __GNUC_PREREQ (4, 1)
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# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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__sync_val_compare_and_swap (mem, oldval, newval)
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# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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(! __sync_bool_compare_and_swap (mem, oldval, newval))
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#else
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# define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgb %b2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "q" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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# define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgw %w2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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# define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgl %2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#endif
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#define __arch_c_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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@ -240,8 +247,13 @@ typedef uintmax_t uatomic_max_t;
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} \
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__result; })
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#define atomic_exchange_and_add(mem, value) \
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#if __GNUC_PREREQ (4, 1)
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# define atomic_exchange_and_add(mem, value) \
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__sync_fetch_and_add (mem, value)
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#else
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# define atomic_exchange_and_add(mem, value) \
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__arch_exchange_and_add_body (LOCK_PREFIX, __arch, mem, value)
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#endif
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#define __arch_exchange_and_add_cprefix \
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"cmpl $0, %%gs:%P4\n\tje 0f\n\tlock\n0:\t"
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@ -1,4 +1,4 @@
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/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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@ -56,34 +56,41 @@ typedef uintmax_t uatomic_max_t;
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#endif
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#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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#if __GNUC_PREREQ (4, 1)
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# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
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__sync_val_compare_and_swap (mem, oldval, newval)
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# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
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(! __sync_bool_compare_and_swap (mem, oldval, newval))
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#else
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# define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgb %b2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "q" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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# define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgw %w2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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# define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgl %2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "m" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
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# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
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({ __typeof (*mem) ret; \
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__asm __volatile (LOCK_PREFIX "cmpxchgq %q2, %1" \
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: "=a" (ret), "=m" (*mem) \
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: "r" ((long int) (newval)), "m" (*mem), \
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"0" ((long int) (oldval))); \
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ret; })
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#endif
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#define __arch_c_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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@ -178,8 +185,13 @@ typedef uintmax_t uatomic_max_t;
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"i" (offsetof (tcbhead_t, multiple_threads))); \
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result; })
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#define atomic_exchange_and_add(mem, value) \
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#if __GNUC_PREREQ (4, 1)
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# define atomic_exchange_and_add(mem, value) \
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__sync_fetch_and_add (mem, value)
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#else
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# define atomic_exchange_and_add(mem, value) \
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__arch_exchange_and_add_body (LOCK_PREFIX, mem, value)
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#endif
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#define __arch_exchange_and_add_cprefix \
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"cmpl $0, %%fs:%P4\n\tje 0f\n\tlock\n0:\t"
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