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authorEric Andersen <andersen@codepoet.org>2005-02-18 16:33:15 +0000
committerEric Andersen <andersen@codepoet.org>2005-02-18 16:33:15 +0000
commit2e1397254005fe0828088b2f5b1a0eb5604c9f4e (patch)
treeb992e1dbf8930db17711e18d37dd9d5305a6cddc /libpthread/linuxthreads/sysdeps/bfin
parent76991157980b0ec704309507622b045afa0d0261 (diff)
Merge pt-machine.h for the blackfin from the Analog
source tree.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/bfin')
-rw-r--r--libpthread/linuxthreads/sysdeps/bfin/pt-machine.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/bfin/pt-machine.h b/libpthread/linuxthreads/sysdeps/bfin/pt-machine.h
new file mode 100644
index 000000000..fef16263e
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/bfin/pt-machine.h
@@ -0,0 +1,57 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ Copyright (C) 1996, 1998, 2000, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>.
+
+ 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; 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 _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#ifndef PT_EI
+# define PT_EI extern inline
+#endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long *, long , long);
+
+/* Spinlock implementation; required. */
+PT_EI long int
+testandset (int *spinlock)
+{
+ if (*spinlock)
+ return 1;
+ else
+ {
+ *spinlock=1;
+ return 0;
+ }
+}
+
+#define HAS_COMPARE_AND_SWAP
+
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+ if((*p ^ oldval) == 0) {
+ *p = newval;
+ return 1;
+ }
+ else
+ return 0;
+}
+
+#endif /* pt-machine.h */