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comparison src/share/vm/asm/assembler.inline.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 inline void AbstractAssembler::sync() {
26 CodeSection* cs = code_section();
27 guarantee(cs->start() == _code_begin, "must not shift code buffer");
28 cs->set_end(_code_pos);
29 }
30
31 inline void AbstractAssembler::emit_byte(int x) {
32 assert(isByte(x), "not a byte");
33 *(unsigned char*)_code_pos = (unsigned char)x;
34 _code_pos += sizeof(unsigned char);
35 sync();
36 }
37
38
39 inline void AbstractAssembler::emit_word(int x) {
40 *(short*)_code_pos = (short)x;
41 _code_pos += sizeof(short);
42 sync();
43 }
44
45
46 inline void AbstractAssembler::emit_long(jint x) {
47 *(jint*)_code_pos = x;
48 _code_pos += sizeof(jint);
49 sync();
50 }
51
52 inline void AbstractAssembler::emit_address(address x) {
53 *(address*)_code_pos = x;
54 _code_pos += sizeof(address);
55 sync();
56 }
57
58 inline address AbstractAssembler::inst_mark() const {
59 return code_section()->mark();
60 }
61
62
63 inline void AbstractAssembler::set_inst_mark() {
64 code_section()->set_mark();
65 }
66
67
68 inline void AbstractAssembler::clear_inst_mark() {
69 code_section()->clear_mark();
70 }
71
72
73 inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
74 assert(!pd_check_instruction_mark()
75 || inst_mark() == NULL || inst_mark() == _code_pos,
76 "call relocate() between instructions");
77 code_section()->relocate(_code_pos, rspec, format);
78 }
79
80
81 inline CodeBuffer* AbstractAssembler::code() const {
82 return code_section()->outer();
83 }
84
85 inline int AbstractAssembler::sect() const {
86 return code_section()->index();
87 }
88
89 inline int AbstractAssembler::locator() const {
90 return CodeBuffer::locator(offset(), sect());
91 }
92
93 inline address AbstractAssembler::target(Label& L) {
94 return code_section()->target(L, pc());
95 }
96
97 inline int Label::loc_pos() const {
98 return CodeBuffer::locator_pos(loc());
99 }
100
101 inline int Label::loc_sect() const {
102 return CodeBuffer::locator_sect(loc());
103 }
104
105 inline void Label::bind_loc(int pos, int sect) {
106 bind_loc(CodeBuffer::locator(pos, sect));
107 }
108
109 address AbstractAssembler::address_constant(Label& L) {
110 address c = NULL;
111 address ptr = start_a_const(sizeof(c), sizeof(c));
112 if (ptr != NULL) {
113 relocate(Relocation::spec_simple(relocInfo::internal_word_type));
114 *(address*)ptr = c = code_section()->target(L, ptr);
115 _code_pos = ptr + sizeof(c);
116 end_a_const();
117 }
118 return ptr;
119 }
120
121 address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
122 int addressSize = sizeof(address);
123 int sizeLabel = addressSize * labels.length();
124 address ptr = start_a_const(sizeLabel, addressSize);
125
126 if (ptr != NULL) {
127 address *labelLoc = (address*)ptr;
128 for (int i=0; i < labels.length(); i++) {
129 emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
130 code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
131 }
132 end_a_const();
133 }
134 return ptr;
135 }