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1 /*
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2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 inline void AbstractAssembler::sync() {
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26 CodeSection* cs = code_section();
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27 guarantee(cs->start() == _code_begin, "must not shift code buffer");
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28 cs->set_end(_code_pos);
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29 }
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30
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31 inline void AbstractAssembler::emit_byte(int x) {
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32 assert(isByte(x), "not a byte");
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33 *(unsigned char*)_code_pos = (unsigned char)x;
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34 _code_pos += sizeof(unsigned char);
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35 sync();
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36 }
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37
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38
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39 inline void AbstractAssembler::emit_word(int x) {
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40 *(short*)_code_pos = (short)x;
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41 _code_pos += sizeof(short);
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42 sync();
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43 }
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44
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45
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46 inline void AbstractAssembler::emit_long(jint x) {
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47 *(jint*)_code_pos = x;
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48 _code_pos += sizeof(jint);
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49 sync();
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50 }
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51
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52 inline void AbstractAssembler::emit_address(address x) {
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53 *(address*)_code_pos = x;
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54 _code_pos += sizeof(address);
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55 sync();
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56 }
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57
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58 inline address AbstractAssembler::inst_mark() const {
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59 return code_section()->mark();
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60 }
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61
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62
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63 inline void AbstractAssembler::set_inst_mark() {
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64 code_section()->set_mark();
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65 }
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66
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67
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68 inline void AbstractAssembler::clear_inst_mark() {
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69 code_section()->clear_mark();
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70 }
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71
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72
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73 inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
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74 assert(!pd_check_instruction_mark()
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75 || inst_mark() == NULL || inst_mark() == _code_pos,
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76 "call relocate() between instructions");
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77 code_section()->relocate(_code_pos, rspec, format);
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78 }
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79
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80
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81 inline CodeBuffer* AbstractAssembler::code() const {
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82 return code_section()->outer();
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83 }
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84
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85 inline int AbstractAssembler::sect() const {
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86 return code_section()->index();
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87 }
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88
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89 inline int AbstractAssembler::locator() const {
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90 return CodeBuffer::locator(offset(), sect());
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91 }
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92
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93 inline address AbstractAssembler::target(Label& L) {
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94 return code_section()->target(L, pc());
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95 }
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96
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97 inline int Label::loc_pos() const {
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98 return CodeBuffer::locator_pos(loc());
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99 }
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100
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101 inline int Label::loc_sect() const {
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102 return CodeBuffer::locator_sect(loc());
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103 }
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104
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105 inline void Label::bind_loc(int pos, int sect) {
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106 bind_loc(CodeBuffer::locator(pos, sect));
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107 }
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108
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109 address AbstractAssembler::address_constant(Label& L) {
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110 address c = NULL;
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111 address ptr = start_a_const(sizeof(c), sizeof(c));
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112 if (ptr != NULL) {
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113 relocate(Relocation::spec_simple(relocInfo::internal_word_type));
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114 *(address*)ptr = c = code_section()->target(L, ptr);
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115 _code_pos = ptr + sizeof(c);
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116 end_a_const();
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117 }
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118 return ptr;
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119 }
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120
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121 address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) {
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122 int addressSize = sizeof(address);
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123 int sizeLabel = addressSize * labels.length();
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124 address ptr = start_a_const(sizeLabel, addressSize);
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125
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126 if (ptr != NULL) {
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127 address *labelLoc = (address*)ptr;
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128 for (int i=0; i < labels.length(); i++) {
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129 emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i]));
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130 code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type);
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131 }
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132 end_a_const();
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133 }
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134 return ptr;
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135 }
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