From be1628459d784542a10ab56ca4d6e503b05899f1 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Sat, 22 Mar 2003 21:00:48 +0000 Subject: [PATCH] Superceded by atomic.h. --- sysdeps/m68k/m68020/atomicity.h | 64 ----------------------------------------- 1 file changed, 64 deletions(-) delete mode 100644 sysdeps/m68k/m68020/atomicity.h diff --git a/sysdeps/m68k/m68020/atomicity.h b/sysdeps/m68k/m68020/atomicity.h deleted file mode 100644 index 4649480..0000000 --- a/sysdeps/m68k/m68020/atomicity.h +++ /dev/null @@ -1,64 +0,0 @@ -/* Low-level functions for atomic operations. m680x0 version, x >= 2. - Copyright (C) 1997 Free Software Foundation, Inc. - Contributed by Andreas Schwab . - 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. */ - -#ifndef _ATOMICITY_H -#define _ATOMICITY_H 1 - -#include - - -static inline int -__attribute__ ((unused)) -exchange_and_add (volatile uint32_t *mem, int val) -{ - register int result = *mem; - register int temp; - __asm__ __volatile__ ("1: move%.l %0,%1;" - " add%.l %2,%1;" - " cas%.l %0,%1,%3;" - " jbne 1b" - : "=d" (result), "=&d" (temp) - : "d" (val), "m" (*mem), "0" (result) : "memory"); - return result; -} - -static inline void -__attribute__ ((unused)) -atomic_add (volatile uint32_t *mem, int val) -{ - /* XXX Use cas here as well? */ - __asm__ __volatile__ ("add%.l %0,%1" - : : "id" (val), "m" (*mem) : "memory"); -} - -static inline int -__attribute__ ((unused)) -compare_and_swap (volatile long int *p, long int oldval, long int newval) -{ - char ret; - long int readval; - - __asm__ __volatile__ ("cas%.l %2,%3,%1; seq %0" - : "=dm" (ret), "=m" (*p), "=d" (readval) - : "d" (newval), "m" (*p), "2" (oldval)); - return ret; -} - -#endif /* atomicity.h */ -- 2.7.4