Update.

2003-03-19  Ulrich Drepper  <drepper@redhat.com>

	* Makefile (distribute): Add include/atomic.h and bits/atomic.h.
	* include/atomic.h: New file.
	* sysdeps/i386/i486/bits/atomic.h: New file.
	* sysdeps/x86_64/bits/atomic.h: New file.
	* sysdeps/s390/bits/atomic.h: New file.
	* sysdeps/sh/bits/atomic.h: New file.
	* sysdeps/ia64/bits/atomic.h: New file.
	* sysdeps/powerpc/bits/atomic.h: New file.
	* sysdeps/generic/bits/atomic.h: New file.
	* sysdeps/i386/i486/atomicity.h: Removed.
	* sysdeps/x86_64/atomicity.h: Removed.
	* sysdeps/s390/s390-32/atomicity.h: Removed.
	* sysdeps/s390/s390-64/atomicity.h: Removed.
	* sysdeps/ia64/atomicity.h: Removed.
	* sysdeps/powerpc/powerpc32/atomicity.h: Removed.
	* sysdeps/powerpc/powerpc64/atomicity.h: Removed.
	* elf/dl-profile.c: Use atomic.h instead of atomicity.h.  Adjust
	use of macros from atomicity.h to new names and semantics.
	* gmon_mcount.c: Likewise.
	* malloc/set-freeres.c: Likewise.
	* nscd/cache.c: Likewise.
	* stdlib/cxa_finalize.c: Likewise.
	* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.

	* sysdeps/mips/ieee754.h: New file, suitable to replace both
	* stdlib/strtod.c (INTERNAL): While eating trailing zeros handle

1 files changed, 141 insertions, 0 deletions

diff --git a/include/atomic.h b/include/atomic.h
new file mode 100644
index 0000000..813fb80
--- /dev/null
+++ b/include/atomic.h
@@ -0,0 +1,141 @@
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _ATOMIC_H
+#define _ATOMIC_H	1
+
+#include <stdlib.h>
+
+#include <bits/atomic.h>
+
+
+#ifndef atomic_compare_and_exchange_acq
+# define atomic_compare_and_exchange_acq(mem, newval, oldval) \
+  ({ __typeof (__arch_compare_and_exchange_32_acq (mem, newval, oldval))      \
+	 __result;							      \
+     if (sizeof (*mem) == 1)						      \
+       __result = __arch_compare_and_exchange_8_acq (mem, newval, oldval);    \
+     else if (sizeof (*mem) == 2)					      \
+       __result = __arch_compare_and_exchange_16_acq (mem, newval, oldval);   \
+     else if (sizeof (*mem) == 4)					      \
+       __result = __arch_compare_and_exchange_32_acq (mem, newval, oldval);   \
+     else if (sizeof (*mem) == 8)					      \
+       __result = __arch_compare_and_exchange_64_acq (mem, newval, oldval);   \
+     else								      \
+       abort ();							      \
+     __result; })
+#endif
+
+
+#ifndef atomic_compare_and_exchange_rel
+# define atomic_compare_and_exchange_rel(mem, oldval, newval) \
+  atomic_compare_and_exchange_acq (mem, oldval, newval)
+#endif
+
+
+#ifndef atomic_exchange_and_add
+# define atomic_exchange_and_add(mem, value) \
+  ({ __typeof (*mem) __oldval;						      \
+     __typeof (mem) __memp = (mem);					      \
+     __typeof (*mem) __value = (value);					      \
+									      \
+     do									      \
+       __oldval = (*__memp);						      \
+     while (atomic_compare_and_exchange_acq (__memp, __oldval + __value,      \
+					     __oldval));		      \
+									      \
+     __oldval + __value; })
+#endif
+
+
+#ifndef atomic_add
+# define atomic_add(mem, value) (void) atomic_exchange_and_add (mem, value)
+#endif
+
+
+#ifndef atomic_increment
+# define atomic_increment(mem) atomic_add (mem, 1)
+#endif
+
+
+#ifndef atomic_increment_and_test
+# define atomic_increment_and_test(mem) \
+  (atomic_exchange_and_add (mem, 1) == 0)
+#endif
+
+
+#ifndef atomic_decrement
+# define atomic_decrement(mem) atomic_add (mem, -1)
+#endif
+
+
+#ifndef atomic_decrement_and_test
+# define atomic_decrement_and_test(mem) \
+  (atomic_exchange_and_add (mem, -1) == 0)
+#endif
+
+
+#ifndef atomic_add_negative
+# define atomic_add_negative(mem, value) \
+  (atomic_exchange_and_add (mem, value) < 0)
+#endif
+
+
+#ifndef atomic_add_zero
+# define atomic_add_zero(mem, value) \
+  (atomic_exchange_and_add (mem, value) == 0)
+#endif
+
+
+#ifndef atomic_bit_set
+# define atomic_bit_set(mem, bit) \
+  (void) atomic_bit_test_set(mem, bit)
+#endif
+
+
+#ifndef atomic_bit_test_set
+# define atomic_bit_test_set(mem, bit) \
+  ({ __typeof (*mem) __oldval;						      \
+     __typeof (mem) __memp = (mem);					      \
+     __typeof (*mem) __mask = (1 << (bit));				      \
+									      \
+     do									      \
+       __oldval = (*__memp);						      \
+     while (atomic_compare_and_exchange_acq (__memp,			      \
+					     __oldval | __mask, __oldval));   \
+									      \
+     __oldval & __mask; })
+#endif
+
+
+#ifndef atomic_full_barrier
+# define atomic_full_barrier() __asm ("" ::: "memory")
+#endif
+
+
+#ifndef atomic_read_barrier
+# define atomic_read_barrier() atomic_full_barrier()
+#endif
+
+
+#ifndef atomic_write_barrier
+# define atomic_write_barrier() atomic_full_barrier()
+#endif
+
+#endif	/* atomic.h */