Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/icache_x86.cpp @ 2230:55cc33cf55bc
7018257: jmm_DumpThreads allocates into permgen
Summary: Don't allocate in permgen
Reviewed-by: ysr, sla
author | stefank |
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date | Fri, 11 Feb 2011 14:15:16 +0100 |
parents | f95d63e2154a |
children | cd3d6a6b95d9 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "assembler_x86.inline.hpp" | |
27 #include "runtime/icache.hpp" | |
0 | 28 |
29 #define __ _masm-> | |
30 | |
31 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { | |
32 StubCodeMark mark(this, "ICache", "flush_icache_stub"); | |
33 | |
34 address start = __ pc(); | |
35 #ifdef AMD64 | |
36 | |
37 const Register addr = c_rarg0; | |
38 const Register lines = c_rarg1; | |
39 const Register magic = c_rarg2; | |
40 | |
41 Label flush_line, done; | |
42 | |
43 __ testl(lines, lines); | |
44 __ jcc(Assembler::zero, done); | |
45 | |
46 // Force ordering wrt cflush. | |
47 // Other fence and sync instructions won't do the job. | |
48 __ mfence(); | |
49 | |
50 __ bind(flush_line); | |
51 __ clflush(Address(addr, 0)); | |
304 | 52 __ addptr(addr, ICache::line_size); |
0 | 53 __ decrementl(lines); |
54 __ jcc(Assembler::notZero, flush_line); | |
55 | |
56 __ mfence(); | |
57 | |
58 __ bind(done); | |
59 | |
60 #else | |
61 const Address magic(rsp, 3*wordSize); | |
62 __ lock(); __ addl(Address(rsp, 0), 0); | |
63 #endif // AMD64 | |
304 | 64 __ movptr(rax, magic); // Handshake with caller to make sure it happened! |
0 | 65 __ ret(0); |
66 | |
67 // Must be set here so StubCodeMark destructor can call the flush stub. | |
68 *flush_icache_stub = (ICache::flush_icache_stub_t)start; | |
69 } | |
70 | |
71 #undef __ |