assembler.inline.hpp revision 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
25inline 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
31inline 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
39inline void AbstractAssembler::emit_word(int x) {
40  *(short*)_code_pos = (short)x;
41  _code_pos += sizeof(short);
42  sync();
43}
44
45
46inline void AbstractAssembler::emit_long(jint x) {
47  *(jint*)_code_pos = x;
48  _code_pos += sizeof(jint);
49  sync();
50}
51
52inline void AbstractAssembler::emit_address(address x) {
53  *(address*)_code_pos = x;
54  _code_pos += sizeof(address);
55  sync();
56}
57
58inline address AbstractAssembler::inst_mark() const {
59  return code_section()->mark();
60}
61
62
63inline void AbstractAssembler::set_inst_mark() {
64  code_section()->set_mark();
65}
66
67
68inline void AbstractAssembler::clear_inst_mark() {
69  code_section()->clear_mark();
70}
71
72
73inline 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
81inline CodeBuffer* AbstractAssembler::code() const {
82  return code_section()->outer();
83}
84
85inline int AbstractAssembler::sect() const {
86  return code_section()->index();
87}
88
89inline int AbstractAssembler::locator() const {
90  return CodeBuffer::locator(offset(), sect());
91}
92
93inline address AbstractAssembler::target(Label& L) {
94  return code_section()->target(L, pc());
95}
96
97inline int Label::loc_pos() const {
98  return CodeBuffer::locator_pos(loc());
99}
100
101inline int Label::loc_sect() const {
102  return CodeBuffer::locator_sect(loc());
103}
104
105inline void Label::bind_loc(int pos, int sect) {
106  bind_loc(CodeBuffer::locator(pos, sect));
107}
108
109address 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
121address 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}
136