Mercurial > hg > graal-compiler
diff src/cpu/x86/vm/icache_x86.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | dc7f315e41f7 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/x86/vm/icache_x86.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,70 @@ +/* + * Copyright 1997-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_icache_x86.cpp.incl" + +#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)); + __ addq(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 + __ movl(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 __