aoqi@1: /*
aoqi@1:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@1:  * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.
aoqi@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@1:  *
aoqi@1:  * This code is free software; you can redistribute it and/or modify it
aoqi@1:  * under the terms of the GNU General Public License version 2 only, as
aoqi@1:  * published by the Free Software Foundation.
aoqi@1:  *
aoqi@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@1:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@1:  * accompanied this code).
aoqi@1:  *
aoqi@1:  * You should have received a copy of the GNU General Public License version
aoqi@1:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@1:  *
aoqi@1:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@1:  * or visit www.oracle.com if you need additional information or have any
aoqi@1:  * questions.
aoqi@1:  *
aoqi@1:  */
aoqi@1: 
aoqi@1: #include "precompiled.hpp"
aoqi@1: #include "asm/macroAssembler.hpp"
aoqi@1: #include "runtime/icache.hpp"
aoqi@1: #include <asm/cachectl.h>
aoqi@1: #include <sys/cachectl.h>
aoqi@1: #include <sys/sysmips.h>
aoqi@1: 
aoqi@1: #ifdef _LP64
aoqi@1:   #define CACHE_OPT 1
aoqi@1: #endif
aoqi@1: 
aoqi@1: //no need, we just call cacheflush system call to flush cache
aoqi@1: //update @jerome , 12/05/2006
aoqi@1: //flush cache is a very frequent operation, flush all the cache decrease the performance sharply, so i modify it.
aoqi@1: void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) {};
aoqi@1: 
aoqi@1: void ICache::call_flush_stub(address start, int lines) {
aoqi@1: 	//in fact, the current os implementation simply flush all ICACHE&DCACHE
aoqi@1: #ifndef CACHE_OPT
aoqi@1: 	/* Loongson3A supports automatic synchronization between Icache and Dcache.
aoqi@1:          * No manual synchronization is needed. */
aoqi@1: 	cacheflush(start, lines * line_size , ICACHE);
aoqi@1: #endif
aoqi@1: //	sysmips(3, 0, 0, 0);
aoqi@1: }
aoqi@1: 
aoqi@1: void ICache::invalidate_word(address addr) {
aoqi@1: 	//cacheflush(addr, 4, ICACHE);
aoqi@1: 
aoqi@1: #ifndef CACHE_OPT
aoqi@1: 	cacheflush(addr,4, ICACHE);
aoqi@1: #endif
aoqi@1: //	sysmips(3, 0, 0, 0);
aoqi@1: }
aoqi@1: 
aoqi@1: void ICache::invalidate_range(address start, int nbytes) {
aoqi@1: #ifndef CACHE_OPT
aoqi@1: 	cacheflush(start, nbytes, ICACHE);
aoqi@1: #endif
aoqi@1: //	sysmips(3, 0, 0, 0);
aoqi@1: }
aoqi@1: 
aoqi@1: void ICache::invalidate_all() {
aoqi@1: #ifndef CACHE_OPT
aoqi@1: 	sysmips(3, 0, 0, 0);
aoqi@1: #endif
aoqi@1: }
aoqi@1: