1 | /*- |
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2 | * Copyright (c) 2009,2011 Kai Wang |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * |
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14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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24 | * SUCH DAMAGE. |
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25 | */ |
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26 | |
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27 | #include "_libdwarf.h" |
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28 | |
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29 | ELFTC_VCSID("$Id: dwarf_arange.c 2072 2011-10-27 03:26:49Z jkoshy $"); |
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30 | |
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31 | int |
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32 | dwarf_get_aranges(Dwarf_Debug dbg, Dwarf_Arange **arlist, |
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33 | Dwarf_Signed *ret_arange_cnt, Dwarf_Error *error) |
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34 | { |
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35 | |
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36 | if (dbg == NULL || arlist == NULL || ret_arange_cnt == NULL) { |
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37 | DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); |
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38 | return (DW_DLV_ERROR); |
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39 | } |
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40 | |
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41 | if (dbg->dbg_arange_cnt == 0) { |
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42 | if (_dwarf_arange_init(dbg, error) != DW_DLE_NONE) |
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43 | return (DW_DLV_ERROR); |
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44 | if (dbg->dbg_arange_cnt == 0) { |
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45 | DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); |
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46 | return (DW_DLV_NO_ENTRY); |
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47 | } |
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48 | } |
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49 | |
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50 | assert(dbg->dbg_arange_array != NULL); |
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51 | |
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52 | *arlist = dbg->dbg_arange_array; |
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53 | *ret_arange_cnt = dbg->dbg_arange_cnt; |
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54 | |
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55 | return (DW_DLV_OK); |
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56 | } |
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57 | |
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58 | int |
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59 | dwarf_get_arange(Dwarf_Arange *arlist, Dwarf_Unsigned arange_cnt, |
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60 | Dwarf_Addr addr, Dwarf_Arange *ret_arange, Dwarf_Error *error) |
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61 | { |
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62 | Dwarf_Arange ar; |
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63 | Dwarf_Debug dbg; |
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64 | int i; |
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65 | |
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66 | if (arlist == NULL) { |
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67 | DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); |
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68 | return (DW_DLV_ERROR); |
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69 | } |
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70 | |
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71 | dbg = (*arlist)->ar_as->as_cu->cu_dbg; |
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72 | |
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73 | if (ret_arange == NULL || arange_cnt == 0) { |
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74 | DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); |
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75 | return (DW_DLV_ERROR); |
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76 | } |
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77 | |
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78 | for (i = 0; (Dwarf_Unsigned)i < arange_cnt; i++) { |
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79 | ar = arlist[i]; |
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80 | if (addr >= ar->ar_address && addr < ar->ar_address + |
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81 | ar->ar_range) { |
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82 | *ret_arange = ar; |
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83 | return (DW_DLV_OK); |
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84 | } |
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85 | } |
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86 | |
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87 | DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); |
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88 | |
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89 | return (DW_DLV_NO_ENTRY); |
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90 | } |
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91 | |
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92 | int |
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93 | dwarf_get_cu_die_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset, |
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94 | Dwarf_Error *error) |
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95 | { |
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96 | Dwarf_CU cu; |
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97 | Dwarf_ArangeSet as; |
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98 | |
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99 | if (ar == NULL) { |
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100 | DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); |
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101 | return (DW_DLV_ERROR); |
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102 | } |
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103 | |
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104 | as = ar->ar_as; |
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105 | assert(as != NULL); |
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106 | cu = as->as_cu; |
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107 | assert(cu != NULL); |
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108 | |
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109 | if (ret_offset == NULL) { |
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110 | DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT); |
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111 | return (DW_DLV_ERROR); |
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112 | } |
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113 | |
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114 | *ret_offset = cu->cu_1st_offset; |
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115 | |
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116 | return (DW_DLV_OK); |
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117 | } |
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118 | |
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119 | int |
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120 | dwarf_get_arange_cu_header_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset, |
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121 | Dwarf_Error *error) |
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122 | { |
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123 | Dwarf_ArangeSet as; |
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124 | |
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125 | if (ar == NULL) { |
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126 | DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); |
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127 | return (DW_DLV_ERROR); |
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128 | } |
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129 | |
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130 | as = ar->ar_as; |
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131 | assert(as != NULL); |
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132 | |
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133 | if (ret_offset == NULL) { |
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134 | DWARF_SET_ERROR(as->as_cu->cu_dbg, error, DW_DLE_ARGUMENT); |
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135 | return (DW_DLV_ERROR); |
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136 | } |
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137 | |
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138 | *ret_offset = as->as_cu_offset; |
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139 | |
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140 | return (DW_DLV_OK); |
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141 | } |
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142 | |
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143 | int |
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144 | dwarf_get_arange_info(Dwarf_Arange ar, Dwarf_Addr *start, |
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145 | Dwarf_Unsigned *length, Dwarf_Off *cu_die_offset, Dwarf_Error *error) |
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146 | { |
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147 | Dwarf_CU cu; |
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148 | Dwarf_ArangeSet as; |
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149 | |
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150 | if (ar == NULL) { |
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151 | DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); |
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152 | return (DW_DLV_ERROR); |
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153 | } |
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154 | |
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155 | as = ar->ar_as; |
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156 | assert(as != NULL); |
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157 | cu = as->as_cu; |
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158 | assert(cu != NULL); |
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159 | |
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160 | if (start == NULL || length == NULL || |
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161 | cu_die_offset == NULL) { |
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162 | DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT); |
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163 | return (DW_DLV_ERROR); |
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164 | } |
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165 | |
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166 | *start = ar->ar_address; |
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167 | *length = ar->ar_range; |
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168 | *cu_die_offset = cu->cu_1st_offset; |
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169 | |
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170 | return (DW_DLV_OK); |
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171 | } |
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