libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/mips/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/mips/pthread_spin_trylock.S
new file mode 100644
index 000000000..b54732869
--- /dev/null
+++ b/libpthread/nptl/sysdeps/mips/pthread_spin_trylock.S
@@ -0,0 +1,43 @@
+/* Copyright (C) 2005 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; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sys/asm.h>
+#include <sysdep.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <sgidefs.h>
+
+ENTRY (pthread_spin_trylock)
+	.set	push
+#if _MIPS_SIM == _ABIO32
+	.set	mips2
+#endif
+	ll	a2, 0(a0)
+	li	a1, 1
+	bnez	a2, 1f
+	sc	a1, 0(a0)
+	beqz	a1, 1f
+	MIPS_SYNC
+	.set	pop
+	li	v0, 0
+	j	ra
+	nop
+1:	li	v0, EBUSY
+	j	ra
+	nop
+END (pthread_spin_trylock)