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authorUlrich Drepper <drepper@redhat.com>2003-03-20 07:19:17 +0000
committerUlrich Drepper <drepper@redhat.com>2003-03-20 07:19:17 +0000
commit4009bf404450e4ad7b72140d7bae3226fad3468c (patch)
tree175b2211f0ae10f837a3822c08cb2b989663725a /bits/atomic.h
parent85b5767c57eecaad6aea0967444f5e5d42a4cc17 (diff)
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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
Diffstat (limited to 'bits/atomic.h')
-rw-r--r--bits/atomic.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/bits/atomic.h b/bits/atomic.h
new file mode 100644
index 0000000000..7595b407ca
--- /dev/null
+++ b/bits/atomic.h
@@ -0,0 +1,31 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   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 _BITS_ATOMIC_H
+#define _BITS_ATOMIC_H	1
+
+/* We have by default no support for atomic operations.  So define
+   them non-atomic.  If this is a problem somebody will have to come
+   up with real definitions.  */
+
+/* The only basic operation needed is compare and exchange.  */
+#define arch_compare_and_exchange_acq(mem, newval, oldval) \
+  ({ *(mem) == (oldval) ? 1 : (*(mem) = (newval), 0); })
+
+#endif	/* bits/atomic.h */