initial import of latest linuxthreads

5 files changed, 156 insertions, 0 deletions

diff --git a/libpthread/linuxthreads/sysdeps/m68k/CVS/Entries b/libpthread/linuxthreads/sysdeps/m68k/CVS/Entries
new file mode 100644
index 000000000..cbe6641c6
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/m68k/CVS/Entries
@@ -0,0 +1,3 @@
+/pspinlock.c/1.3/Tue Nov 15 14:20:47 2005//
+/pt-machine.h/1.7/Tue Nov 15 14:20:47 2005//
+D
diff --git a/libpthread/linuxthreads/sysdeps/m68k/CVS/Repository b/libpthread/linuxthreads/sysdeps/m68k/CVS/Repository
new file mode 100644
index 000000000..39713690e
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/m68k/CVS/Repository
@@ -0,0 +1 @@
+ports/linuxthreads/sysdeps/m68k
diff --git a/libpthread/linuxthreads/sysdeps/m68k/CVS/Root b/libpthread/linuxthreads/sysdeps/m68k/CVS/Root
new file mode 100644
index 000000000..ca45c5d4d
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/m68k/CVS/Root
@@ -0,0 +1 @@
+:pserver:anoncvs@sources.redhat.com:/cvs/glibc
diff --git a/libpthread/linuxthreads/sysdeps/m68k/pspinlock.c b/libpthread/linuxthreads/sysdeps/m68k/pspinlock.c
new file mode 100644
index 000000000..30b9b9e8b
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/m68k/pspinlock.c
@@ -0,0 +1,82 @@
+/* POSIX spinlock implementation.  M68k version.
+   Copyright (C) 2000 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"
+
+
+int
+__pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  do
+    asm volatile ("tas %1; sne %0"
+		  : "=dm" (val), "=m" (*lock)
+		  : "m" (*lock)
+		  : "cc");
+  while (val);
+
+  return 0;
+}
+weak_alias (__pthread_spin_lock, pthread_spin_lock)
+
+
+int
+__pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  unsigned int val;
+
+  asm volatile ("tas %1; sne %0"
+		: "=dm" (val), "=m" (*lock)
+		: "m" (*lock)
+		: "cc");
+
+  return val ? 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/m68k/pt-machine.h b/libpthread/linuxthreads/sysdeps/m68k/pt-machine.h
new file mode 100644
index 000000000..ad524d6d2
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/m68k/pt-machine.h
@@ -0,0 +1,69 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   m68k version.
+   Copyright (C) 1996, 1998, 2000, 2002, 2003 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 __attribute__ ((always_inline))
+#endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
+
+/* Spinlock implementation; required.  */
+PT_EI long int
+testandset (int *spinlock)
+{
+  char ret;
+
+  __asm__ __volatile__("tas %1; sne %0"
+       : "=dm"(ret), "=m"(*spinlock)
+       : "m"(*spinlock)
+       : "cc");
+
+  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.  */
+#define CURRENT_STACK_FRAME  stack_pointer
+register char * stack_pointer __asm__ ("%sp");
+
+
+/* Compare-and-swap for semaphores. */
+
+#define HAS_COMPARE_AND_SWAP
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+  char ret;
+  long int readval;
+
+  __asm__ __volatile__ ("casl %2, %3, %1; seq %0"
+			: "=dm" (ret), "=m" (*p), "=d" (readval)
+			: "d" (newval), "m" (*p), "2" (oldval));
+
+  return ret;
+}
+
+#endif /* pt-machine.h */