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26c780da72
6459804: Want client (c1) compiler for x86_64 (amd64) for faster start-up Reviewed-by: kvn
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* Copyright 1997-2004 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_icache_x86.cpp.incl"
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#define __ _masm->
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void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) {
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StubCodeMark mark(this, "ICache", "flush_icache_stub");
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address start = __ pc();
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#ifdef AMD64
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const Register addr = c_rarg0;
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const Register lines = c_rarg1;
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const Register magic = c_rarg2;
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Label flush_line, done;
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__ testl(lines, lines);
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__ jcc(Assembler::zero, done);
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// Force ordering wrt cflush.
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// Other fence and sync instructions won't do the job.
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__ mfence();
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__ bind(flush_line);
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__ clflush(Address(addr, 0));
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__ addptr(addr, ICache::line_size);
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__ decrementl(lines);
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__ jcc(Assembler::notZero, flush_line);
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__ mfence();
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__ bind(done);
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#else
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const Address magic(rsp, 3*wordSize);
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__ lock(); __ addl(Address(rsp, 0), 0);
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#endif // AMD64
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__ movptr(rax, magic); // Handshake with caller to make sure it happened!
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__ ret(0);
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// Must be set here so StubCodeMark destructor can call the flush stub.
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*flush_icache_stub = (ICache::flush_icache_stub_t)start;
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}
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#undef __
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