Annotation of gforth/arch/hppa/cache.c, revision 1.6

1.1       jwilke      1: /* cache flushing for the HP-PA architecture
                      2: 
1.6     ! anton       3:   Copyright (C) 1995,1996,1997,1998,2003 Free Software Foundation, Inc.
1.1       jwilke      4: 
                      5:   This file is part of Gforth.
                      6: 
                      7:   Gforth is free software; you can redistribute it and/or
                      8:   modify it under the terms of the GNU General Public License
                      9:   as published by the Free Software Foundation; either version 2
                     10:   of the License, or (at your option) any later version.
                     11: 
                     12:   This program is distributed in the hope that it will be useful,
                     13:   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15:   GNU General Public License for more details.
                     16: 
                     17:   You should have received a copy of the GNU General Public License
                     18:   along with this program; if not, write to the Free Software
1.3       anton      19:   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       jwilke     20: */
                     21: 
1.5       anton      22: #include <stddef.h>
                     23: 
                     24: void cacheflush(void * address, size_t size, size_t linewidth)
1.4       anton      25: {
1.5       anton      26:   void *p=(void *)((size_t)address & (-linewidth));
1.4       anton      27: 
                     28:   for(; p<address+size;)
                     29:     asm volatile("fdc (%0)\n\t"
                     30:                 "sync\n\t"
                     31:                 "fic,m %1(%0)\n\t"
                     32:                 "sync" : "+r"(p) : "r"(linewidth) : "memory" );
                     33: }
                     34: 
                     35: #if 0
1.1       jwilke     36: void cacheflush(void * address, int size, int linewidth)
                     37: {
                     38:   int i;
                     39: 
                     40:   address=(void *)((int)address & (-linewidth));
                     41: 
                     42:   for(i=1-linewidth; i<size; i+=linewidth)
                     43:     asm volatile("fdc (%0)\n\t"
                     44:                 "sync\n\t"
                     45:                 "fic,m %1(%0)\n\t"
                     46:                 "sync" : : "r" (address), "r" (linewidth) : "memory" );
                     47: }
1.4       anton      48: #endif

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