Mercurial > hg > truffle
view src/cpu/x86/vm/icache_x86.cpp @ 3522:65c865bba4c2
Merge
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
---|---|
date | Tue, 09 Aug 2011 18:59:29 +0200 |
parents | f95d63e2154a |
children | cd3d6a6b95d9 |
line wrap: on
line source
/* * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "assembler_x86.inline.hpp" #include "runtime/icache.hpp" #define __ _masm-> void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { StubCodeMark mark(this, "ICache", "flush_icache_stub"); address start = __ pc(); #ifdef AMD64 const Register addr = c_rarg0; const Register lines = c_rarg1; const Register magic = c_rarg2; Label flush_line, done; __ testl(lines, lines); __ jcc(Assembler::zero, done); // Force ordering wrt cflush. // Other fence and sync instructions won't do the job. __ mfence(); __ bind(flush_line); __ clflush(Address(addr, 0)); __ addptr(addr, ICache::line_size); __ decrementl(lines); __ jcc(Assembler::notZero, flush_line); __ mfence(); __ bind(done); #else const Address magic(rsp, 3*wordSize); __ lock(); __ addl(Address(rsp, 0), 0); #endif // AMD64 __ movptr(rax, magic); // Handshake with caller to make sure it happened! __ ret(0); // Must be set here so StubCodeMark destructor can call the flush stub. *flush_icache_stub = (ICache::flush_icache_stub_t)start; } #undef __