[kaffe] CVS kaffe (dalibor): Added missing clear-cache file

[Kaffe CVS]

PatchSet 4518 
Date: 2004/03/13 17:44:22
Author: dalibor
Branch: HEAD
Tag: (none) 
Log:
Added missing clear-cache file

Members: 
	config/m68k/clear-cache.h:INITIAL->1.1 

===================================================================
Checking out kaffe/config/m68k/clear-cache.h
RCS:  /home/cvs/kaffe/kaffe/config/m68k/clear-cache.h,v
VERS: 1.1
***************
--- /dev/null	Sun Aug  4 19:57:58 2002
+++ kaffe/config/m68k/clear-cache.h	Sat Mar 13 18:14:52 2004
@@ -0,0 +1,53 @@
+/* Definitions for Motorola 68k running Linux-based GNU systems with
+   ELF format.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 GCC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#if !defined(CLEAR_CACHE_H)
+#define (CLEAR_CACHE_H)
+
+/* Clear the instruction cache from `beg' to `end'.  This makes an
+   inline system call to SYS_cacheflush.  The arguments are as
+   follows:
+
+	cacheflush (addr, scope, cache, len)
+
+   addr	  - the start address for the flush
+   scope  - the scope of the flush (see the cpush insn)
+   cache  - which cache to flush (see the cpush insn)
+   len    - a factor relating to the number of flushes to perform:
+	    len/16 lines, or len/4096 pages.  */
+
+#define CLEAR_INSN_CACHE(BEG, END)					\
+{									\
+  register unsigned long _beg __asm ("%d1") = (unsigned long) (BEG);	\
+  unsigned long _end = (unsigned long) (END);				\
+  register unsigned long _len __asm ("%d4") = (_end - _beg + 32);	\
+  __asm __volatile							\
+    ("move%.l #123, %/d0\n\t"	/* system call nr */			\
+     "move%.l #1, %/d2\n\t"	/* clear lines */			\
+     "move%.l #3, %/d3\n\t"	/* insn+data caches */			\
+     "trap #0"								\
+     : /* no outputs */							\
+     : "d" (_beg), "d" (_len)						\
+     : "%d0", "%d2", "%d3");						\
+}
+
+#endif /* !defined(CLEAR_CACHE_H) */