+/* src/vm/jit/m68k/machine-instr.h
+
+ Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
+ C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
+ E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
+ J. Wenninger, Institut f. Computersprachen - TU Wien
+
+ This file is part of CACAO.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ This program 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+
+*/
+
+
#ifndef _MACHINE_INSTR_H
#define _MACHINE_INSTR_H
static inline long compare_and_swap(long *p, long oldval, long newval)
{
- assert(0);
- return 0;
+ /* XXX, coldifre has no atomic compare and swap instrcution */
+ #warning "compare_and_swap is not atmically"
+ if (*p == oldval) {
+ *p = newval;
+ return oldval;
+ }
+ return *p;
}
-#define STORE_ORDER_BARRIER() assert(0);
-#define MEMORY_BARRIER_BEFORE_ATOMIC() assert(0);
-#define MEMORY_BARRIER_AFTER_ATOMIC() assert(0);
-#define MEMORY_BARRIER() assert(0);
+
+#define STORE_ORDER_BARRIER() __asm__ __volatile__ ("" : : : "memory");
+#define MEMORY_BARRIER_AFTER_ATOMIC() __asm__ __volatile__ ("" : : : "memory");
+#define MEMORY_BARRIER() __asm__ __volatile__ ( "" : : : "memory" );
#endif
+
+
+/*
+ * These are local overrides for various environment variables in Emacs.
+ * Please do not remove this and leave it at the end of the file, where
+ * Emacs will automagically detect them.
+ * ---------------------------------------------------------------------
+ * Local variables:
+ * mode: c
+ * indent-tabs-mode: t
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ * vim:noexpandtab:sw=4:ts=4:
+ */