From a9f5aa1cc96fc2c71f19a9c3e9dcbee0e78f83ca Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 15 Nov 2005 03:13:04 +0000 Subject: rename current stable linuxthreads to linuxthreads.old to prepare for import of latest glibc version --- .../linuxthreads.old/sysdeps/sh64/pt-machine.c | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c (limited to 'libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c') diff --git a/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c b/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c new file mode 100644 index 000000000..ea4881322 --- /dev/null +++ b/libpthread/linuxthreads.old/sysdeps/sh64/pt-machine.c @@ -0,0 +1,47 @@ +/* Cloned for uClibc by Paul Mundt, December 2003 */ +/* Modified by SuperH, Inc. September 2003 */ + +/* Machine-dependent pthreads configuration and inline functions. + SH5 version. + Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Niibe Yutaka . + + 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. */ + +#include "pt-machine.h" + +/* Spinlock implementation; required. */ + +/* The SH5 does not have a suitable test-and-set instruction (SWAP only + operates on an aligned quad word). So we use the SH4 version instead. + This must be seperately compiled in SHcompact mode, so it cannot be + inline. */ + +long int testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__( + "tas.b @%1\n\t" + "movt %0" + : "=r" (ret) + : "r" (spinlock) + : "memory", "cc"); + + return (ret == 0); +} + -- cgit v1.2.3