1 files changed, 69 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/m68k/pt-machine.h b/linuxthreads/sysdeps/m68k/pt-machine.h
new file mode 100644
index 0000000000..ad524d6d2e
--- /dev/null
+++ b/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 */