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authorMike Frysinger <vapier@gentoo.org>2006-01-31 05:05:15 +0000
committerMike Frysinger <vapier@gentoo.org>2006-01-31 05:05:15 +0000
commitcccc549ced940c85039c8ce263c8bb571f244afd (patch)
treeef77a870db7211ad6f511867fc56ee1a1a8b4c18 /libpthread/linuxthreads/sysdeps/cris
parente73b1211737842732951f9b9049294ef732e1ef0 (diff)
initial import of latest linuxthreads
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/cris')
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/CVS/Entries3
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/CVS/Repository1
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/CVS/Root1
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/pspinlock.c72
-rw-r--r--libpthread/linuxthreads/sysdeps/cris/pt-machine.h58
5 files changed, 135 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/cris/CVS/Entries b/libpthread/linuxthreads/sysdeps/cris/CVS/Entries
new file mode 100644
index 000000000..de3e32e55
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/CVS/Entries
@@ -0,0 +1,3 @@
+/pspinlock.c/1.2/Tue Nov 15 14:20:47 2005//
+/pt-machine.h/1.5/Tue Nov 15 14:20:47 2005//
+D
diff --git a/libpthread/linuxthreads/sysdeps/cris/CVS/Repository b/libpthread/linuxthreads/sysdeps/cris/CVS/Repository
new file mode 100644
index 000000000..f38568a22
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/CVS/Repository
@@ -0,0 +1 @@
+ports/linuxthreads/sysdeps/cris
diff --git a/libpthread/linuxthreads/sysdeps/cris/CVS/Root b/libpthread/linuxthreads/sysdeps/cris/CVS/Root
new file mode 100644
index 000000000..ca45c5d4d
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/CVS/Root
@@ -0,0 +1 @@
+:pserver:anoncvs@sources.redhat.com:/cvs/glibc
diff --git a/libpthread/linuxthreads/sysdeps/cris/pspinlock.c b/libpthread/linuxthreads/sysdeps/cris/pspinlock.c
new file mode 100644
index 000000000..402e838c0
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/pspinlock.c
@@ -0,0 +1,72 @@
+/* POSIX spinlock implementation. CRIS version.
+ Copyright (C) 2000, 2001 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,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <pthread.h>
+#include "internals.h"
+
+/* FIXME: These are just dummies. I don't know why or if they're needed;
+ configury should default to these definitions. We just follow the
+ crowd here. */
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+ while (testandset (lock) != 0)
+ ;
+
+ return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+ return testandset (lock) != 0 ? EBUSY : 0;
+}
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
+
+
+int
+__pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+ return *lock = 0;
+}
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
+
+
+int
+__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
+{
+ /* We can ignore the `pshared' parameter. Since we are busy-waiting
+ all processes which can access the memory location `lock' points
+ to can use the spinlock. */
+ return *lock = 0;
+}
+weak_alias (__pthread_spin_init, pthread_spin_init)
+
+
+int
+__pthread_spin_destroy (pthread_spinlock_t *lock)
+{
+ /* Nothing to do. */
+ return 0;
+}
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/libpthread/linuxthreads/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h
new file mode 100644
index 000000000..431da7101
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h
@@ -0,0 +1,58 @@
+/* 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,
+ 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 __attribute__ ((always_inline))
+#endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
+
+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. */
+ __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)
+ : "memory");
+ 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 */