From c68d0fa2d88fc2134a38d99e7e944828384a7671 Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Sat, 17 Oct 2009 12:26:24 -0700 Subject: libpthread/nptl: core of the "Native Posix Threading Library" for uClibc targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley --- libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S | 45 +++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S (limited to 'libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S') diff --git a/libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S b/libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S new file mode 100644 index 000000000..ce6cd41a4 --- /dev/null +++ b/libpthread/nptl/sysdeps/alpha/pthread_spin_lock.S @@ -0,0 +1,45 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson , 2003. + + 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. */ + + + .text + .align 4 + + .globl pthread_spin_lock + .ent pthread_spin_lock +pthread_spin_lock: + .frame $sp, 0, $26, 0 + .prologue 0 + +0: ldl_l $1, 0($16) + lda $2, 1 + lda $0, 0 + bne $1, 1f + + stl_c $2, 0($16) + beq $2, 1f + mb + ret + +1: ldl $1, 0($16) + bne $1, 1b + unop + br 0b + + .end pthread_spin_lock -- cgit v1.2.3