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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 } |