Tue, 08 Feb 2011 09:11:37 -0800
7017673: Remove setting of the sun.jkernel.DownloadManager as a boot classloader hook
Reviewed-by: alanb, dcubed, coleenp
1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
25 #include "precompiled.hpp"
26 #include "compiler/disassembler.hpp"
27 #include "oops/oop.inline.hpp"
28 #include "prims/forte.hpp"
29 #include "runtime/stubCodeGenerator.hpp"
30 #ifdef TARGET_ARCH_x86
31 # include "assembler_x86.inline.hpp"
32 #endif
33 #ifdef TARGET_ARCH_sparc
34 # include "assembler_sparc.inline.hpp"
35 #endif
36 #ifdef TARGET_ARCH_zero
37 # include "assembler_zero.inline.hpp"
38 #endif
39 #ifdef TARGET_ARCH_arm
40 # include "assembler_arm.inline.hpp"
41 #endif
42 #ifdef TARGET_ARCH_ppc
43 # include "assembler_ppc.inline.hpp"
44 #endif
47 // Implementation of StubCodeDesc
49 StubCodeDesc* StubCodeDesc::_list = NULL;
50 int StubCodeDesc::_count = 0;
53 StubCodeDesc* StubCodeDesc::desc_for(address pc) {
54 StubCodeDesc* p = _list;
55 while (p != NULL && !p->contains(pc)) p = p->_next;
56 // p == NULL || p->contains(pc)
57 return p;
58 }
61 StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
62 StubCodeDesc* p = _list;
63 while (p != NULL && p->index() != index) p = p->_next;
64 return p;
65 }
68 const char* StubCodeDesc::name_for(address pc) {
69 StubCodeDesc* p = desc_for(pc);
70 return p == NULL ? NULL : p->name();
71 }
74 void StubCodeDesc::print_on(outputStream* st) const {
75 st->print(group());
76 st->print("::");
77 st->print(name());
78 st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());
79 }
81 // Implementation of StubCodeGenerator
83 StubCodeGenerator::StubCodeGenerator(CodeBuffer* code) {
84 _masm = new MacroAssembler(code);
85 _first_stub = _last_stub = NULL;
86 }
88 extern "C" {
89 static int compare_cdesc(const void* void_a, const void* void_b) {
90 int ai = (*((StubCodeDesc**) void_a))->index();
91 int bi = (*((StubCodeDesc**) void_b))->index();
92 return ai - bi;
93 }
94 }
96 StubCodeGenerator::~StubCodeGenerator() {
97 if (PrintStubCode) {
98 CodeBuffer* cbuf = _masm->code();
99 CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
100 if (blob != NULL) {
101 blob->set_comments(cbuf->comments());
102 }
103 bool saw_first = false;
104 StubCodeDesc* toprint[1000];
105 int toprint_len = 0;
106 for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
107 toprint[toprint_len++] = cdesc;
108 if (cdesc == _first_stub) { saw_first = true; break; }
109 }
110 assert(saw_first, "must get both first & last");
111 // Print in reverse order:
112 qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
113 for (int i = 0; i < toprint_len; i++) {
114 StubCodeDesc* cdesc = toprint[i];
115 cdesc->print();
116 tty->cr();
117 Disassembler::decode(cdesc->begin(), cdesc->end());
118 tty->cr();
119 }
120 }
121 }
124 void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
125 // default implementation - do nothing
126 }
129 void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
130 // default implementation - record the cdesc
131 if (_first_stub == NULL) _first_stub = cdesc;
132 _last_stub = cdesc;
133 }
136 // Implementation of CodeMark
138 StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
139 _cgen = cgen;
140 _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
141 _cgen->stub_prolog(_cdesc);
142 // define the stub's beginning (= entry point) to be after the prolog:
143 _cdesc->set_begin(_cgen->assembler()->pc());
144 }
146 StubCodeMark::~StubCodeMark() {
147 _cgen->assembler()->flush();
148 _cdesc->set_end(_cgen->assembler()->pc());
149 assert(StubCodeDesc::_list == _cdesc, "expected order on list");
150 _cgen->stub_epilog(_cdesc);
151 Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
153 if (JvmtiExport::should_post_dynamic_code_generated()) {
154 JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
155 }
156 }