1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/x86/vm/icache_x86.cpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,70 @@
1.4 +/*
1.5 + * Copyright 1997-2004 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "incls/_precompiled.incl"
1.29 +#include "incls/_icache_x86.cpp.incl"
1.30 +
1.31 +#define __ _masm->
1.32 +
1.33 +void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) {
1.34 + StubCodeMark mark(this, "ICache", "flush_icache_stub");
1.35 +
1.36 + address start = __ pc();
1.37 +#ifdef AMD64
1.38 +
1.39 + const Register addr = c_rarg0;
1.40 + const Register lines = c_rarg1;
1.41 + const Register magic = c_rarg2;
1.42 +
1.43 + Label flush_line, done;
1.44 +
1.45 + __ testl(lines, lines);
1.46 + __ jcc(Assembler::zero, done);
1.47 +
1.48 + // Force ordering wrt cflush.
1.49 + // Other fence and sync instructions won't do the job.
1.50 + __ mfence();
1.51 +
1.52 + __ bind(flush_line);
1.53 + __ clflush(Address(addr, 0));
1.54 + __ addq(addr, ICache::line_size);
1.55 + __ decrementl(lines);
1.56 + __ jcc(Assembler::notZero, flush_line);
1.57 +
1.58 + __ mfence();
1.59 +
1.60 + __ bind(done);
1.61 +
1.62 +#else
1.63 + const Address magic(rsp, 3*wordSize);
1.64 + __ lock(); __ addl(Address(rsp, 0), 0);
1.65 +#endif // AMD64
1.66 + __ movl(rax, magic); // Handshake with caller to make sure it happened!
1.67 + __ ret(0);
1.68 +
1.69 + // Must be set here so StubCodeMark destructor can call the flush stub.
1.70 + *flush_icache_stub = (ICache::flush_icache_stub_t)start;
1.71 +}
1.72 +
1.73 +#undef __
