summaryrefslogtreecommitdiff
path: root/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c
diff options
context:
space:
mode:
authorMike Frysinger <vapier@gentoo.org>2005-11-15 03:13:04 +0000
committerMike Frysinger <vapier@gentoo.org>2005-11-15 03:13:04 +0000
commita9f5aa1cc96fc2c71f19a9c3e9dcbee0e78f83ca (patch)
tree2c5d251bdfd06d0a76cec9fc507b1873b4bbbdad /libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c
parentfd6dde5a19092be5bb1990dadd5c595d2ed0b3aa (diff)
rename current stable linuxthreads to linuxthreads.old to prepare for import of latest glibc version
Diffstat (limited to 'libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c')
-rw-r--r--libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c b/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c
new file mode 100644
index 000000000..ea4881322
--- /dev/null
+++ b/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c
@@ -0,0 +1,47 @@
+/* Cloned for uClibc by Paul Mundt, December 2003 */
+/* Modified by SuperH, Inc. September 2003 */
+
+/* Machine-dependent pthreads configuration and inline functions.
+ SH5 version.
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Niibe Yutaka <gniibe@m17n.org>.
+
+ 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. */
+
+#include "pt-machine.h"
+
+/* Spinlock implementation; required. */
+
+/* The SH5 does not have a suitable test-and-set instruction (SWAP only
+ operates on an aligned quad word). So we use the SH4 version instead.
+ This must be seperately compiled in SHcompact mode, so it cannot be
+ inline. */
+
+long int testandset (int *spinlock)
+{
+ int ret;
+
+ __asm__ __volatile__(
+ "tas.b @%1\n\t"
+ "movt %0"
+ : "=r" (ret)
+ : "r" (spinlock)
+ : "memory", "cc");
+
+ return (ret == 0);
+}
+