Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/x86/vm/icache_x86.cpp
src/cpu/x86/vm/icache_x86.cpp
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- 710a3c8b516e
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| 1 /* | |
| 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "precompiled.hpp" | |
| 26 #include "asm/macroAssembler.hpp" | |
| 27 #include "runtime/icache.hpp" | |
| 28 | |
| 29 #define __ _masm-> | |
| 30 | |
| 31 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { | |
| 32 StubCodeMark mark(this, "ICache", "flush_icache_stub"); | |
| 33 | |
| 34 address start = __ pc(); | |
| 35 #ifdef AMD64 | |
| 36 | |
| 37 const Register addr = c_rarg0; | |
| 38 const Register lines = c_rarg1; | |
| 39 const Register magic = c_rarg2; | |
| 40 | |
| 41 Label flush_line, done; | |
| 42 | |
| 43 __ testl(lines, lines); | |
| 44 __ jcc(Assembler::zero, done); | |
| 45 | |
| 46 // Force ordering wrt cflush. | |
| 47 // Other fence and sync instructions won't do the job. | |
| 48 __ mfence(); | |
| 49 | |
| 50 __ bind(flush_line); | |
| 51 __ clflush(Address(addr, 0)); | |
| 52 __ addptr(addr, ICache::line_size); | |
| 53 __ decrementl(lines); | |
| 54 __ jcc(Assembler::notZero, flush_line); | |
| 55 | |
| 56 __ mfence(); | |
| 57 | |
| 58 __ bind(done); | |
| 59 | |
| 60 #else | |
| 61 const Address magic(rsp, 3*wordSize); | |
| 62 __ lock(); __ addl(Address(rsp, 0), 0); | |
| 63 #endif // AMD64 | |
| 64 __ movptr(rax, magic); // Handshake with caller to make sure it happened! | |
| 65 __ ret(0); | |
| 66 | |
| 67 // Must be set here so StubCodeMark destructor can call the flush stub. | |
| 68 *flush_icache_stub = (ICache::flush_icache_stub_t)start; | |
| 69 } | |
| 70 | |
| 71 #undef __ |
