assembler.inline.hpp revision 1879:f95d63e2154a 
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
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23 */
24
25#ifndef SHARE_VM_ASM_ASSEMBLER_INLINE_HPP
26#define SHARE_VM_ASM_ASSEMBLER_INLINE_HPP
27
28#include "asm/assembler.hpp"
29#include "asm/codeBuffer.hpp"
30#include "compiler/disassembler.hpp"
31#include "runtime/threadLocalStorage.hpp"
32
33inline void AbstractAssembler::sync() {
34  CodeSection* cs = code_section();
35  guarantee(cs->start() == _code_begin, "must not shift code buffer");
36  cs->set_end(_code_pos);
37}
38
39inline void AbstractAssembler::emit_byte(int x) {
40  assert(isByte(x), "not a byte");
41  *(unsigned char*)_code_pos = (unsigned char)x;
42  _code_pos += sizeof(unsigned char);
43  sync();
44}
45
46
47inline void AbstractAssembler::emit_word(int x) {
48  *(short*)_code_pos = (short)x;
49  _code_pos += sizeof(short);
50  sync();
51}
52
53
54inline void AbstractAssembler::emit_long(jint x) {
55  *(jint*)_code_pos = x;
56  _code_pos += sizeof(jint);
57  sync();
58}
59
60inline void AbstractAssembler::emit_address(address x) {
61  *(address*)_code_pos = x;
62  _code_pos += sizeof(address);
63  sync();
64}
65
66inline address AbstractAssembler::inst_mark() const {
67  return code_section()->mark();
68}
69
70
71inline void AbstractAssembler::set_inst_mark() {
72  code_section()->set_mark();
73}
74
75
76inline void AbstractAssembler::clear_inst_mark() {
77  code_section()->clear_mark();
78}
79
80
81inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
82  assert(!pd_check_instruction_mark()
83         || inst_mark() == NULL || inst_mark() == _code_pos,
84         "call relocate() between instructions");
85  code_section()->relocate(_code_pos, rspec, format);
86}
87
88
89inline CodeBuffer* AbstractAssembler::code() const {
90  return code_section()->outer();
91}
92
93inline int AbstractAssembler::sect() const {
94  return code_section()->index();
95}
96
97inline int AbstractAssembler::locator() const {
98  return CodeBuffer::locator(offset(), sect());
99}
100
101inline address AbstractAssembler::target(Label& L) {
102  return code_section()->target(L, pc());
103}
104
105inline int Label::loc_pos() const {
106  return CodeBuffer::locator_pos(loc());
107}
108
109inline int Label::loc_sect() const {
110  return CodeBuffer::locator_sect(loc());
111}
112
113inline void Label::bind_loc(int pos, int sect) {
114  bind_loc(CodeBuffer::locator(pos, sect));
115}
116
117address AbstractAssembler::address_constant(Label& L) {
118  address c = NULL;
119  address ptr = start_a_const(sizeof(c), sizeof(c));
120  if (ptr != NULL) {
121    relocate(Relocation::spec_simple(relocInfo::internal_word_type));
122    *(address*)ptr = c = code_section()->target(L, ptr);
123    _code_pos = ptr + sizeof(c);
124    end_a_const();
125  }
126  return ptr;
127}
128
129address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
130  int addressSize = sizeof(address);
131  int sizeLabel = addressSize * labels.length();
132  address ptr = start_a_const(sizeLabel, addressSize);
133
134  if (ptr != NULL) {
135    address *labelLoc = (address*)ptr;
136    for (int i=0; i < labels.length(); i++) {
137      emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
138      code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
139    }
140    end_a_const();
141  }
142  return ptr;
143}
144
145#endif // SHARE_VM_ASM_ASSEMBLER_INLINE_HPP
146