Update.

2000-08-02  Andreas Jaeger  <aj@suse.de>

	* linuxthreads/sysdeps/s390/pspinlock.c: New file.
	* linuxthreads/sysdeps/s390/pt-machine.h: New file.
	Patches by Martin Schwidefsky <schwidefsky@de.ibm.com>.

1 files changed, 76 insertions, 0 deletions

diff --git a/linuxthreads/sysdeps/s390/pt-machine.h b/linuxthreads/sysdeps/s390/pt-machine.h
new file mode 100644
index 0000000000..8de4a1a7c4
--- /dev/null
+++ b/linuxthreads/sysdeps/s390/pt-machine.h
@@ -0,0 +1,76 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   S390 version.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   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 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.  */
+
+#ifndef PT_EI
+# define PT_EI extern inline
+#endif
+
+/* Spinlock implementation; required.  */
+PT_EI int
+testandset (int *spinlock)
+{
+  int ret;
+
+  __asm__ __volatile__(
+       "    lhi   0,1\n"
+       "    l     %0,%1\n"
+       "0:  cs    %0,0,%1\n"
+       "    jl    0b"
+       : "=&d" (ret), "+m" (*spinlock)
+       : : "0", "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__ ("15");
+
+
+/* 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)
+{
+        int retval;
+
+        __asm__ __volatile__(
+                "  lr   0,%2\n"
+                "  cs   0,%3,%1\n"
+                "  ipm  %0\n"
+                "  srl  %0,28\n"
+                "0:"
+                : "=&d" (retval), "+m" (*p)
+                : "d" (oldval) , "d" (newval)
+                : "cc", "0");
+        return retval == 0;
+}
+
+
+
+/* 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__ ("%r15");