2006-01-18 Richard Henderson <rth@redhat.com>

[pf3gnuchains/gcc-fork.git] / libgomp / config / linux / sparc / futex.h

diff --git a/libgomp/config/linux/sparc/futex.h b/libgomp/config/linux/sparc/futex.h
new file mode 100644 (file)
index 0000000..7b1cc83
--- /dev/null
+++ b/libgomp/config/linux/sparc/futex.h
@@ -0,0 +1,80 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+   This file is part of the GNU OpenMP Library (libgomp).
+
+   Libgomp 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.
+
+   Libgomp 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 libgomp; see the file COPYING.LIB.  If not, write to the
+   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+/* As a special exception, if you link this library with other files, some
+   of which are compiled with GCC, to produce an executable, this library
+   does not by itself cause the resulting executable to be covered by the
+   GNU General Public License.  This exception does not however invalidate
+   any other reasons why the executable file might be covered by the GNU
+   General Public License.  */
+
+/* Provide target-specific access to the futex system call.  */
+
+#include <sys/syscall.h>
+#define FUTEX_WAIT     0
+#define FUTEX_WAKE     1
+
+static inline void
+sys_futex0 (int *addr, int op, int val)
+{
+  register long int g1  __asm__ ("g1");
+  register long int o0  __asm__ ("o0");
+  register long int o1  __asm__ ("o1");
+  register long int o2  __asm__ ("o2");
+  register long int o3  __asm__ ("o3");
+
+  g1 = SYS_futex;
+  o0 = (long) addr;
+  o1 = op;
+  o2 = val;
+  o3 = 0;
+
+#ifdef __arch64__
+# define SYSCALL_STRING "ta\t0x6d"
+#else
+# define SYSCALL_STRING "ta\t0x10"
+#endif
+
+  __asm volatile (SYSCALL_STRING
+                 : "=r" (g1), "=r" (o0)
+                 : "0" (g1), "1" (o0), "r" (o1), "r" (o2), "r" (o3)
+                 : "g2", "g3", "g4", "g5", "g6",
+                   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+                   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+                   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+                   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+#ifdef __arch64__
+                   "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",
+                   "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",
+#endif
+                   "cc", "memory");
+}
+
+static inline void
+futex_wait (int *addr, int val)
+{
+  sys_futex0 (addr, FUTEX_WAIT, val);
+}
+
+static inline void
+futex_wake (int *addr, int count)
+{
+  sys_futex0 (addr, FUTEX_WAKE, count);
+}