1 files changed, 76 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/mips/sys/tas.h b/libc/sysdeps/linux/mips/sys/tas.h
new file mode 100644
index 000000000..0c81dc2de
--- /dev/null
+++ b/libc/sysdeps/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 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 _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:\n"
+     : "=&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 */