From cccc549ced940c85039c8ce263c8bb571f244afd Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 31 Jan 2006 05:05:15 +0000
Subject: initial import of latest linuxthreads

---
 libpthread/linuxthreads/sysdeps/mips/pt-machine.h | 92 +++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 libpthread/linuxthreads/sysdeps/mips/pt-machine.h

(limited to 'libpthread/linuxthreads/sysdeps/mips/pt-machine.h')

diff --git a/libpthread/linuxthreads/sysdeps/mips/pt-machine.h b/libpthread/linuxthreads/sysdeps/mips/pt-machine.h
new file mode 100644
index 000000000..96f7a7f8c
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/mips/pt-machine.h
@@ -0,0 +1,92 @@
+/* Machine-dependent pthreads configuration and inline functions.
+
+   Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ralf Baechle <ralf@gnu.org>.
+   Based on the Alpha version 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
+
+#include <sgidefs.h>
+#include <sys/tas.h>
+
+#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)
+{
+  return _test_and_set (spinlock, 1);
+}
+
+
+/* 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__ ("$29");
+
+
+/* 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)
+{
+  long int ret, temp;
+
+  __asm__ __volatile__
+    ("/* Inline compare & swap */\n"
+     "1:\n\t"
+     ".set	push\n\t"
+#if _MIPS_SIM == _ABIO32
+     ".set	mips2\n\t"
+#endif
+#if _MIPS_SIM == _ABI64
+     "lld	%1,%5\n\t"
+#else
+     "ll	%1,%5\n\t"
+#endif
+     "move	%0,$0\n\t"
+     "bne	%1,%3,2f\n\t"
+     "move	%0,%4\n\t"
+#if _MIPS_SIM == _ABI64
+     "scd	%0,%2\n\t"
+#else
+     "sc	%0,%2\n\t"
+#endif
+     ".set	pop\n\t"
+     "beqz	%0,1b\n"
+     "2:\n\t"
+     "/* End compare & swap */"
+     : "=&r" (ret), "=&r" (temp), "=m" (*p)
+     : "r" (oldval), "r" (newval), "m" (*p)
+     : "memory");
+
+  return ret;
+}
+
+#endif /* pt-machine.h */
-- 
cgit v1.2.3