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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
commite1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a (patch)
tree2c8d14e4dcc733f4227f0984ed05da5826b13acd /libpthread/linuxthreads.old/sysdeps/cris
parent6b6ede3d15f04fe825cfa9f697507457e3640344 (diff)
Revert "resolve merge"
This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
Diffstat (limited to 'libpthread/linuxthreads.old/sysdeps/cris')
-rw-r--r--libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h
new file mode 100644
index 000000000..a89579ee0
--- /dev/null
+++ b/libpthread/linuxthreads.old/sysdeps/cris/pt-machine.h
@@ -0,0 +1,69 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ CRIS version.
+ Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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,
+ see <http://www.gnu.org/licenses/>. */
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#include <features.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+PT_EI long int
+testandset (int *spinlock)
+{
+ register unsigned long int ret;
+
+ /* Note the use of a dummy output of *spinlock to expose the write. The
+ memory barrier is to stop *other* writes being moved past this code. */
+
+#ifdef __arch_v32
+ __asm__ __volatile__("clearf p\n"
+ "0:\n\t"
+ "movu.b [%2],%0\n\t"
+ "ax\n\t"
+ "move.b %3,[%2]\n\t"
+ "bcs 0b\n\t"
+ "clearf p"
+ : "=&r" (ret), "=m" (*spinlock)
+ : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
+ : "memory");
+#else /* not __arch_v32 */
+ __asm__ __volatile__("clearf\n"
+ "0:\n\t"
+ "movu.b [%2],%0\n\t"
+ "ax\n\t"
+ "move.b %3,[%2]\n\t"
+ "bwf 0b\n\t"
+ "clearf"
+ : "=&r" (ret), "=m" (*spinlock)
+ : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
+ : "memory");
+#endif /* __arch_v32 */
+ return ret;
+}
+
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame.
+ I don't trust register variables, so let's do this the safe way. */
+#define CURRENT_STACK_FRAME \
+ ({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; })
+
+#endif /* pt-machine.h */