Update.

2000-07-12  Maciej W. Rozycki  <macro@ds2.pg.gda.pl>

	* sysdeps/unix/sysv/linux/mips/Dist: Add sys/tas.h.
	* sysdeps/unix/sysv/linux/mips/Makefile (sysdep_routines): Add
	_test_and_set.
	(headers): Add sys/tas.h.
	* sysdeps/unix/sysv/linux/mips/Versions: Export _test_and_set for
	GLIBC_2.2 from libc.
	* sysdeps/unix/sysv/linux/mips/_test_and_set.c: New file.
	* sysdeps/unix/sysv/linux/mips/sys/tas.h: New file for
	_test_and_set.

1 files changed, 76 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/mips/sys/tas.h b/sysdeps/unix/sysv/linux/mips/sys/tas.h
new file mode 100644
index 0000000000..b24aabb46a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/sys/tas.h
@@ -0,0 +1,76 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Maciej W. Rozycki <macro@ds2.pg.gda.pl>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_TAS_H
+#define _SYS_TAS_H 1
+
+#include <features.h>
+#include <sgidefs.h>
+#include <sys/sysmips.h>
+
+__BEGIN_DECLS
+
+extern int _test_and_set (int *p, int v) __THROW;
+
+#ifdef __USE_EXTERN_INLINES
+
+# ifndef _EXTERN_INLINE
+#  define _EXTERN_INLINE extern __inline
+# endif
+
+# if (_MIPS_ISA >= _MIPS_ISA_MIPS2)
+
+_EXTERN_INLINE int
+_test_and_set (int *p, int v) __THROW
+{
+  int r, t;
+
+  __asm__ __volatile__
+    ("1:\n\t"
+     "ll	%0,%3\n\t"
+     ".set	push\n\t"
+     ".set	noreorder\n\t"
+     "beq	%0,%4,2f\n\t"
+     " move	%1,%4\n\t"
+     ".set	pop\n\t"
+     "sc	%1,%2\n\t"
+     "beqz	%1,1b\n"
+     "2:"
+     : "=&r" (r), "=&r" (t), "=m" (*p)
+     : "m" (*p), "r" (v)
+     : "memory");
+
+  return r;
+}
+
+# else /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */
+
+_EXTERN_INLINE int
+_test_and_set (int *p, int v) __THROW
+{
+  return sysmips (MIPS_ATOMIC_SET, (int) p, v, 0);
+}
+
+# endif /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */
+
+#endif /* __USE_EXTERN_INLINES */
+
+__END_DECLS
+
+#endif /* sys/tas.h */