1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/cpu/x86/vm/icache_x86.cpp Wed Apr 27 01:25:04 2016 +0800 1.3 @@ -0,0 +1,71 @@ 1.4 +/* 1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.23 + * or visit www.oracle.com if you need additional information or have any 1.24 + * questions. 1.25 + * 1.26 + */ 1.27 + 1.28 +#include "precompiled.hpp" 1.29 +#include "asm/macroAssembler.hpp" 1.30 +#include "runtime/icache.hpp" 1.31 + 1.32 +#define __ _masm-> 1.33 + 1.34 +void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { 1.35 + StubCodeMark mark(this, "ICache", "flush_icache_stub"); 1.36 + 1.37 + address start = __ pc(); 1.38 +#ifdef AMD64 1.39 + 1.40 + const Register addr = c_rarg0; 1.41 + const Register lines = c_rarg1; 1.42 + const Register magic = c_rarg2; 1.43 + 1.44 + Label flush_line, done; 1.45 + 1.46 + __ testl(lines, lines); 1.47 + __ jcc(Assembler::zero, done); 1.48 + 1.49 + // Force ordering wrt cflush. 1.50 + // Other fence and sync instructions won't do the job. 1.51 + __ mfence(); 1.52 + 1.53 + __ bind(flush_line); 1.54 + __ clflush(Address(addr, 0)); 1.55 + __ addptr(addr, ICache::line_size); 1.56 + __ decrementl(lines); 1.57 + __ jcc(Assembler::notZero, flush_line); 1.58 + 1.59 + __ mfence(); 1.60 + 1.61 + __ bind(done); 1.62 + 1.63 +#else 1.64 + const Address magic(rsp, 3*wordSize); 1.65 + __ lock(); __ addl(Address(rsp, 0), 0); 1.66 +#endif // AMD64 1.67 + __ movptr(rax, magic); // Handshake with caller to make sure it happened! 1.68 + __ ret(0); 1.69 + 1.70 + // Must be set here so StubCodeMark destructor can call the flush stub. 1.71 + *flush_icache_stub = (ICache::flush_icache_stub_t)start; 1.72 +} 1.73 + 1.74 +#undef __