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1 /* |
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2 |
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3 Copyright (C) 2000,2004 Silicon Graphics, Inc. All Rights Reserved. |
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4 |
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5 This program is free software; you can redistribute it and/or modify it |
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6 under the terms of version 2.1 of the GNU Lesser General Public License |
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7 as published by the Free Software Foundation. |
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8 |
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9 This program is distributed in the hope that it would be useful, but |
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10 WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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12 |
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13 Further, this software is distributed without any warranty that it is |
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14 free of the rightful claim of any third person regarding infringement |
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15 or the like. Any license provided herein, whether implied or |
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16 otherwise, applies only to this software file. Patent licenses, if |
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17 any, provided herein do not apply to combinations of this program with |
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18 other software, or any other product whatsoever. |
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19 |
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20 You should have received a copy of the GNU Lesser General Public |
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21 License along with this program; if not, write the Free Software |
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22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, |
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23 USA. |
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24 |
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25 Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, |
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26 Mountain View, CA 94043, or: |
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27 |
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28 http://www.sgi.com |
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29 |
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30 For further information regarding this notice, see: |
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31 |
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32 http://oss.sgi.com/projects/GenInfo/NoticeExplan |
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33 |
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34 */ |
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35 |
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36 |
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37 |
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38 #include "config.h" |
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39 #include "libdwarfdefs.h" |
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40 #include <stdio.h> |
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41 #include <string.h> |
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42 #ifdef HAVE_ELFACCESS_H |
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43 #include <elfaccess.h> |
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44 #endif |
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45 #include "pro_incl.h" |
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46 #include "pro_section.h" |
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47 |
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48 |
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49 /* |
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50 This function adds another type name to the |
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51 list of type names for the given Dwarf_P_Debug. |
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52 It returns 0 on error, and 1 otherwise. |
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53 */ |
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54 Dwarf_Unsigned |
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55 dwarf_add_typename(Dwarf_P_Debug dbg, |
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56 Dwarf_P_Die die, |
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57 char *type_name, Dwarf_Error * error) |
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58 { |
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59 return |
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60 _dwarf_add_simple_name_entry(dbg, die, type_name, |
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61 dwarf_snk_typename, error); |
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62 } |
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63 |
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64 /* |
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65 The following is the generic 'add a simple name entry' |
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66 for any of the simple name sections. |
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67 |
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68 See enum dwarf_sn_kind in pro_opaque.h |
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69 |
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70 */ |
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71 Dwarf_Unsigned |
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72 _dwarf_add_simple_name_entry(Dwarf_P_Debug dbg, |
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73 Dwarf_P_Die die, |
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74 char *entry_name, |
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75 enum dwarf_sn_kind entrykind, |
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76 Dwarf_Error * error) |
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77 { |
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78 Dwarf_P_Simple_nameentry nameentry; |
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79 Dwarf_P_Simple_name_header hdr; |
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80 char *name; |
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81 int uword_size; |
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82 |
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83 if (dbg == NULL) { |
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84 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
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85 return (0); |
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86 } |
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87 |
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88 if (die == NULL) { |
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89 _dwarf_p_error(NULL, error, DW_DLE_DIE_NULL); |
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90 return (0); |
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91 } |
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92 |
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93 |
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94 nameentry = (Dwarf_P_Simple_nameentry) |
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95 _dwarf_p_get_alloc(dbg, |
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96 sizeof(struct Dwarf_P_Simple_nameentry_s)); |
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97 if (nameentry == NULL) { |
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98 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
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99 return (0); |
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100 } |
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101 |
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102 name = _dwarf_p_get_alloc(dbg, strlen(entry_name) + 1); |
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103 if (name == NULL) { |
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104 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
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105 return (0); |
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106 } |
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107 strcpy(name, entry_name); |
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108 |
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109 nameentry->sne_die = die; |
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110 nameentry->sne_name = name; |
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111 nameentry->sne_name_len = strlen(name); |
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112 uword_size = dbg->de_offset_size; |
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113 |
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114 hdr = &dbg->de_simple_name_headers[entrykind]; |
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115 if (hdr->sn_head == NULL) |
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116 hdr->sn_head = hdr->sn_tail = nameentry; |
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117 else { |
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118 hdr->sn_tail->sne_next = nameentry; |
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119 hdr->sn_tail = nameentry; |
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120 } |
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121 hdr->sn_count++; |
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122 hdr->sn_net_len += uword_size + nameentry->sne_name_len + 1; |
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123 |
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124 return (1); |
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125 } |
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126 |
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127 |
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128 |
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129 /* |
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130 _dwarf_transform_simplename_to_disk writes |
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131 ".rel.debug_pubnames", |
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132 ".rel.debug_funcnames", sgi extension |
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133 ".rel.debug_typenames", sgi extension |
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134 ".rel.debug_varnames", sgi extension |
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135 ".rel.debug_weaknames", sgi extension |
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136 to disk. |
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137 section_index indexes one of those sections. |
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138 entrykind is one of those 'kind's. |
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139 |
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140 */ |
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141 int |
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142 _dwarf_transform_simplename_to_disk(Dwarf_P_Debug dbg, enum dwarf_sn_kind entrykind, int section_index, /* in |
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143 de_elf_sects |
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144 etc |
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145 */ |
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146 Dwarf_Error * error) |
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147 { |
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148 |
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149 |
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150 /* Used to fill in 0. */ |
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151 const Dwarf_Signed big_zero = 0; |
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152 |
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153 /* Used to scan the section data buffers. */ |
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154 Dwarf_P_Section_Data debug_sect; |
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155 |
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156 Dwarf_Signed debug_info_size; |
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157 |
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158 Dwarf_P_Simple_nameentry nameentry_original; |
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159 Dwarf_P_Simple_nameentry nameentry; |
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160 Dwarf_Small *stream_bytes; |
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161 Dwarf_Small *cur_stream_bytes_ptr; |
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162 Dwarf_Unsigned stream_bytes_count; |
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163 Dwarf_Unsigned adjusted_length; /* count excluding length field |
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164 */ |
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165 |
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166 |
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167 int uword_size = dbg->de_offset_size; |
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168 int extension_size = dbg->de_64bit_extension ? 4 : 0; |
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169 |
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170 Dwarf_P_Simple_name_header hdr; |
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171 |
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172 |
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173 /* ***** BEGIN CODE ***** */ |
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174 |
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175 debug_info_size = 0; |
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176 for (debug_sect = dbg->de_debug_sects; debug_sect != NULL; |
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177 debug_sect = debug_sect->ds_next) { |
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178 /* We want the size of the .debug_info section for this CU |
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179 because the dwarf spec requires us to output it below so we |
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180 look for it specifically. */ |
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181 if (debug_sect->ds_elf_sect_no == dbg->de_elf_sects[DEBUG_INFO]) { |
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182 debug_info_size += debug_sect->ds_nbytes; |
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183 } |
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184 } |
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185 |
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186 hdr = &dbg->de_simple_name_headers[entrykind]; |
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187 /* Size of the .debug_typenames (or similar) section header. */ |
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188 stream_bytes_count = extension_size + uword_size + /* Size of |
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189 length |
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190 field. */ |
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191 sizeof(Dwarf_Half) + /* Size of version field. */ |
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192 uword_size + /* Size of .debug_info offset. */ |
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193 uword_size; /* Size of .debug_names. */ |
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194 |
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195 |
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196 |
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197 nameentry_original = hdr->sn_head; |
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198 nameentry = nameentry_original; |
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199 /* add in the content size */ |
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200 stream_bytes_count += hdr->sn_net_len; |
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201 |
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202 /* Size of the last 0 offset. */ |
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203 stream_bytes_count += uword_size; |
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204 |
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205 /* Now we know how long the entire section is */ |
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206 GET_CHUNK(dbg, dbg->de_elf_sects[section_index], |
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207 stream_bytes, (unsigned long) stream_bytes_count, error); |
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208 if (stream_bytes == NULL) { |
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209 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
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210 return (0); |
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211 } |
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212 cur_stream_bytes_ptr = stream_bytes; |
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213 |
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214 if (extension_size) { |
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215 Dwarf_Unsigned x = DISTINGUISHED_VALUE; |
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216 |
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217 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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218 (const void *) &x, sizeof(x), extension_size); |
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219 cur_stream_bytes_ptr += extension_size; |
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220 |
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221 } |
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222 /* Write the adjusted length of .debug_*names section. */ |
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223 adjusted_length = stream_bytes_count - uword_size - extension_size; |
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224 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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225 (const void *) &adjusted_length, |
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226 sizeof(adjusted_length), uword_size); |
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227 cur_stream_bytes_ptr += uword_size; |
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228 |
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229 /* Write the version as 2 bytes. */ |
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230 { |
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231 Dwarf_Half verstamp = CURRENT_VERSION_STAMP; |
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232 |
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233 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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234 (const void *) &verstamp, |
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235 sizeof(verstamp), sizeof(Dwarf_Half)); |
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236 cur_stream_bytes_ptr += sizeof(Dwarf_Half); |
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237 } |
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238 |
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239 /* Write the offset of the compile-unit. */ |
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240 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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241 (const void *) &big_zero, |
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242 sizeof(big_zero), uword_size); |
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243 cur_stream_bytes_ptr += uword_size; |
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244 |
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245 /* now create the relocation for the compile_unit offset */ |
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246 { |
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247 int res = dbg->de_reloc_name(dbg, |
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248 section_index, |
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249 extension_size + uword_size + |
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250 sizeof(Dwarf_Half) |
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251 /* r_offset */ |
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252 , |
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253 /* debug_info section name symbol */ |
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254 dbg->de_sect_name_idx[DEBUG_INFO], |
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255 dwarf_drt_data_reloc, |
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256 uword_size); |
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257 |
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258 if (res != DW_DLV_OK) { |
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259 { |
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260 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
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261 return (0); |
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262 } |
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263 } |
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264 } |
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265 |
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266 /* Write the size of .debug_info section. */ |
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267 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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268 (const void *) &debug_info_size, |
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269 sizeof(debug_info_size), uword_size); |
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270 cur_stream_bytes_ptr += uword_size; |
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271 |
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272 |
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273 for (nameentry = nameentry_original; |
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274 nameentry != NULL; nameentry = nameentry->sne_next) { |
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275 |
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276 /* Copy offset of die from start of compile-unit. */ |
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277 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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278 (const void *) &nameentry->sne_die->di_offset, |
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279 sizeof(nameentry->sne_die->di_offset), |
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280 uword_size); |
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281 cur_stream_bytes_ptr += uword_size; |
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282 |
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283 /* Copy the type name. */ |
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284 strcpy((char *) cur_stream_bytes_ptr, nameentry->sne_name); |
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285 cur_stream_bytes_ptr += nameentry->sne_name_len + 1; |
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286 } |
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287 |
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288 WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr, |
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289 (const void *) &big_zero, |
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290 sizeof(big_zero), uword_size); |
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291 |
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292 |
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293 |
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294 |
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295 return (int) dbg->de_n_debug_sect; |
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296 } |