1 /* 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2013 SAP AG. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "assembler_ppc.inline.hpp" 28 #include "runtime/icache.hpp" 29 30 // Use inline assembler to implement icache flush. 31 int ICache::ppc64_flush_icache(address start, int lines, int magic) { 32 address end = start + (unsigned int)lines*ICache::line_size; 33 assert(start <= end, "flush_icache parms"); 34 35 // store modified cache lines from data cache 36 for (address a = start; a < end; a += ICache::line_size) { 37 __asm__ __volatile__( 38 "dcbst 0, %0 \n" 39 : 40 : "r" (a) 41 : "memory"); 42 } 43 44 // sync instruction 45 __asm__ __volatile__( 46 "sync \n" 47 : 48 : 49 : "memory"); 50 51 // invalidate respective cache lines in instruction cache 52 for (address a = start; a < end; a += ICache::line_size) { 53 __asm__ __volatile__( 54 "icbi 0, %0 \n" 55 : 56 : "r" (a) 57 : "memory"); 58 } 59 60 // discard fetched instructions 61 __asm__ __volatile__( 62 "isync \n" 63 : 64 : 65 : "memory"); 66 67 return magic; 68 } 69 70 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { 71 72 *flush_icache_stub = (ICache::flush_icache_stub_t)ICache::ppc64_flush_icache; 73 74 // First call to flush itself 75 ICache::invalidate_range((address)(*flush_icache_stub), 0); 76 }