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smp lock bugfix

This commit is contained in:
Werner Saar 2015-05-23 10:58:38 +02:00
parent 0cc5212741
commit 19b8fd2aed
1 changed files with 11 additions and 44 deletions
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55
common_arm64.h
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@ -1,5 +1,5 @@
/***************************************************************************** /*****************************************************************************
Copyright (c) 2011-2014, The OpenBLAS Project Copyright (c) 2011-2015, The OpenBLAS Project
All rights reserved. All rights reserved.
Redistribution and use in source and binary forms, with or without Redistribution and use in source and binary forms, with or without
@ -30,49 +30,12 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**********************************************************************************/ **********************************************************************************/
/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. Redistributions in binary form must reproduce the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer in the documentation and/or other materials */
/* provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
/* POSSIBILITY OF SUCH DAMAGE. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
#ifndef COMMON_ARM64 #ifndef COMMON_ARM64
#define COMMON_ARM64 #define COMMON_ARM64
#define MB #define MB __asm__ __volatile__ ("dmb ish" : : : "memory")
#define WMB #define WMB __asm__ __volatile__ ("dmb ishst" : : : "memory")
#define INLINE inline #define INLINE inline
@ -81,17 +44,20 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef ASSEMBLER #ifndef ASSEMBLER
static void __inline blas_lock(volatile BLASULONG *address){ static void __inline blas_lock(volatile BLASULONG *address){
/*
int register ret; int register ret;
do { do {
while (*address) {YIELDING;}; while (*address) {YIELDING;};
__asm__ __volatile__( __asm__ __volatile__(
"1: \n\t"
"ldrex r2, [%1] \n\t" "ldrex r2, [%1] \n\t"
"mov r2, #0 \n\t" "mov r2, #0 \n\t"
"strex r3, r2, [%1] \n\t" "strex r3, r2, [%1] \n\t"
"mov %0 , r3 \n\t" "cmp r3, #0 \n\t"
"bne 1b \n\t"
"mov %0 , r3 \n\t"
: "=r"(ret), "=r"(address) : "=r"(ret), "=r"(address)
: "1"(address) : "1"(address)
: "memory", "r2" , "r3" : "memory", "r2" , "r3"
@ -100,7 +66,7 @@ static void __inline blas_lock(volatile BLASULONG *address){
); );
} while (ret); } while (ret);
*/
} }
@ -166,3 +132,4 @@ REALNAME:
#endif #endif
#endif #endif