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1 /* |
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2 |
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3 Copyright (C) 2000,2004,2006 Silicon Graphics, Inc. All Rights Reserved. |
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4 Portions Copyright (C) 2007 David Anderson. All Rights Reserved. |
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5 Portions Copyright 2002 Sun Microsystems, Inc. All rights reserved. |
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6 |
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7 This program is free software; you can redistribute it and/or modify it |
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8 under the terms of version 2.1 of the GNU Lesser General Public License |
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9 as published by the Free Software Foundation. |
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10 |
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11 This program is distributed in the hope that it would be useful, but |
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12 WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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14 |
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15 Further, this software is distributed without any warranty that it is |
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16 free of the rightful claim of any third person regarding infringement |
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17 or the like. Any license provided herein, whether implied or |
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18 otherwise, applies only to this software file. Patent licenses, if |
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19 any, provided herein do not apply to combinations of this program with |
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20 other software, or any other product whatsoever. |
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21 |
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22 You should have received a copy of the GNU Lesser General Public |
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23 License along with this program; if not, write the Free Software |
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24 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, |
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25 USA. |
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26 |
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27 Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, |
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28 Mountain View, CA 94043, or: |
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29 |
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30 http://www.sgi.com |
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31 |
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32 For further information regarding this notice, see: |
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33 |
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34 http://oss.sgi.com/projects/GenInfo/NoticeExplan |
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35 |
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36 */ |
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37 /* |
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38 SGI has moved from the Crittenden Lane address. |
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39 */ |
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40 |
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41 |
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42 |
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43 |
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44 |
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45 #include "config.h" |
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46 #include "libdwarfdefs.h" |
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47 #include <stdio.h> |
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48 #include <string.h> |
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49 #ifdef HAVE_ELFACCESS_H |
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50 #include <elfaccess.h> |
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51 #endif |
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52 #include "pro_incl.h" |
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53 #include "pro_section.h" |
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54 #include "pro_line.h" |
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55 #include "pro_frame.h" |
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56 #include "pro_die.h" |
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57 #include "pro_macinfo.h" |
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58 #include "pro_types.h" |
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59 |
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60 #ifndef SHF_MIPS_NOSTRIP |
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61 /* if this is not defined, we probably don't need it: just use 0 */ |
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62 #define SHF_MIPS_NOSTRIP 0 |
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63 #endif |
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64 #ifndef R_MIPS_NONE |
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65 #define R_MIPS_NONE 0 |
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66 #endif |
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67 |
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68 #ifndef TRUE |
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69 #define TRUE 1 |
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70 #endif |
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71 #ifndef FALSE |
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72 #define FALSE 0 |
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73 #endif |
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74 |
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75 /* must match up with pro_section.h defines of DEBUG_INFO etc |
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76 and sectnames (below). REL_SEC_PREFIX is either ".rel" or ".rela" |
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77 see pro_incl.h |
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78 */ |
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79 char *_dwarf_rel_section_names[] = { |
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80 REL_SEC_PREFIX ".debug_info", |
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81 REL_SEC_PREFIX ".debug_line", |
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82 REL_SEC_PREFIX ".debug_abbrev", /* no relocations on this, really */ |
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83 REL_SEC_PREFIX ".debug_frame", |
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84 REL_SEC_PREFIX ".debug_aranges", |
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85 REL_SEC_PREFIX ".debug_pubnames", |
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86 REL_SEC_PREFIX ".debug_str", |
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87 REL_SEC_PREFIX ".debug_funcnames", /* sgi extension */ |
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88 REL_SEC_PREFIX ".debug_typenames", /* sgi extension */ |
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89 REL_SEC_PREFIX ".debug_varnames", /* sgi extension */ |
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90 REL_SEC_PREFIX ".debug_weaknames", /* sgi extension */ |
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91 REL_SEC_PREFIX ".debug_macinfo", |
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92 REL_SEC_PREFIX ".debug_loc" |
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93 }; |
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94 |
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95 /* names of sections. Ensure that it matches the defines |
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96 in pro_section.h, in the same order |
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97 Must match also _dwarf_rel_section_names above |
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98 */ |
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99 char *_dwarf_sectnames[] = { |
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100 ".debug_info", |
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101 ".debug_line", |
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102 ".debug_abbrev", |
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103 ".debug_frame", |
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104 ".debug_aranges", |
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105 ".debug_pubnames", |
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106 ".debug_str", |
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107 ".debug_funcnames", /* sgi extension */ |
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108 ".debug_typenames", /* sgi extension */ |
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109 ".debug_varnames", /* sgi extension */ |
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110 ".debug_weaknames", /* sgi extension */ |
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111 ".debug_macinfo", |
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112 ".debug_loc" |
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113 }; |
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114 |
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115 |
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116 |
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117 |
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118 static Dwarf_Ubyte std_opcode_len[] = { 0, /* DW_LNS_copy */ |
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119 1, /* DW_LNS_advance_pc */ |
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120 1, /* DW_LNS_advance_line */ |
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121 1, /* DW_LNS_set_file */ |
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122 1, /* DW_LNS_set_column */ |
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123 0, /* DW_LNS_negate_stmt */ |
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124 0, /* DW_LNS_set_basic_block */ |
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125 0, /* DW_LNS_const_add_pc */ |
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126 1, /* DW_LNS_fixed_advance_pc */ |
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127 }; |
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128 |
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129 /* struct to hold relocation entries. Its mantained as a linked |
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130 list of relocation structs, and will then be written at as a |
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131 whole into the relocation section. Whether its 32 bit or |
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132 64 bit will be obtained from Dwarf_Debug pointer. |
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133 */ |
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134 |
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135 typedef struct Dwarf_P_Rel_s *Dwarf_P_Rel; |
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136 struct Dwarf_P_Rel_s { |
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137 Dwarf_P_Rel dr_next; |
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138 void *dr_rel_datap; |
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139 }; |
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140 typedef struct Dwarf_P_Rel_Head_s *Dwarf_P_Rel_Head; |
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141 struct Dwarf_P_Rel_Head_s { |
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142 struct Dwarf_P_Rel_s *drh_head; |
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143 struct Dwarf_P_Rel_s *drh_tail; |
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144 }; |
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145 |
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146 static int _dwarf_pro_generate_debugline(Dwarf_P_Debug dbg, |
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147 Dwarf_Error * error); |
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148 static int _dwarf_pro_generate_debugframe(Dwarf_P_Debug dbg, |
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149 Dwarf_Error * error); |
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150 static int _dwarf_pro_generate_debuginfo(Dwarf_P_Debug dbg, |
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151 Dwarf_Error * error); |
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152 static Dwarf_P_Abbrev _dwarf_pro_getabbrev(Dwarf_P_Die, Dwarf_P_Abbrev); |
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153 static int _dwarf_pro_match_attr |
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154 (Dwarf_P_Attribute, Dwarf_P_Abbrev, int no_attr); |
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155 |
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156 /* these macros used as return value for below functions */ |
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157 #define OPC_INCS_ZERO -1 |
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158 #define OPC_OUT_OF_RANGE -2 |
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159 #define LINE_OUT_OF_RANGE -3 |
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160 static int _dwarf_pro_get_opc(Dwarf_Unsigned addr_adv, int line_adv); |
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161 |
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162 |
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163 /* BEGIN_LEN_SIZE is the size of the 'length' field in total. |
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164 Which may be 4,8, or 12 bytes! |
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165 4 is standard DWARF2. |
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166 8 is non-standard MIPS-IRIX 64-bit. |
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167 12 is standard DWARF3 for 64 bit offsets. |
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168 Used in various routines: local variable names |
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169 must match the names here. |
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170 */ |
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171 #define BEGIN_LEN_SIZE (uwordb_size + extension_size) |
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172 |
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173 /* |
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174 Return TRUE if we need the section, FALSE otherwise |
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175 |
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176 If any of the 'line-data-related' calls were made |
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177 including file or directory entries, |
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178 produce .debug_line . |
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179 |
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180 */ |
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181 static int |
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182 dwarf_need_debug_line_section(Dwarf_P_Debug dbg) |
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183 { |
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184 if (dbg->de_lines == NULL && dbg->de_file_entries == NULL |
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185 && dbg->de_inc_dirs == NULL) { |
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186 return FALSE; |
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187 } |
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188 return TRUE; |
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189 } |
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190 |
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191 /* |
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192 Convert debug information to a format such that |
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193 it can be written on disk. |
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194 Called exactly once per execution. |
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195 */ |
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196 Dwarf_Signed |
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197 dwarf_transform_to_disk_form(Dwarf_P_Debug dbg, Dwarf_Error * error) |
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198 { |
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199 /* |
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200 Section data in written out in a number of buffers. Each |
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201 _generate_*() function returns a cumulative count of buffers for |
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202 all the sections. get_section_bytes() returns pointers to these |
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203 buffers one at a time. */ |
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204 int nbufs; |
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205 int sect; |
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206 int name_idx; |
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207 int err; |
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208 Dwarf_Unsigned du; |
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209 |
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210 if (dbg->de_version_magic_number != PRO_VERSION_MAGIC) { |
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211 DWARF_P_DBG_ERROR(dbg, DW_DLE_IA, DW_DLV_NOCOUNT); |
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212 } |
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213 |
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214 /* Create dwarf section headers */ |
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215 for (sect = 0; sect < NUM_DEBUG_SECTIONS; sect++) { |
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216 long flags = 0; |
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217 |
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218 switch (sect) { |
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219 |
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220 case DEBUG_INFO: |
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221 if (dbg->de_dies == NULL) |
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222 continue; |
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223 break; |
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224 |
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225 case DEBUG_LINE: |
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226 if (dwarf_need_debug_line_section(dbg) == FALSE) { |
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227 continue; |
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228 } |
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229 break; |
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230 |
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231 case DEBUG_ABBREV: |
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232 if (dbg->de_dies == NULL) |
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233 continue; |
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234 break; |
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235 |
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236 case DEBUG_FRAME: |
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237 if (dbg->de_frame_cies == NULL) |
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238 continue; |
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239 flags = SHF_MIPS_NOSTRIP; |
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240 break; |
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241 |
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242 case DEBUG_ARANGES: |
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243 if (dbg->de_arange == NULL) |
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244 continue; |
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245 break; |
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246 |
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247 case DEBUG_PUBNAMES: |
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248 if (dbg->de_simple_name_headers[dwarf_snk_pubname]. |
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249 sn_head == NULL) |
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250 continue; |
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251 break; |
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252 |
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253 case DEBUG_STR: |
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254 if (dbg->de_strings == NULL) |
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255 continue; |
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256 break; |
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257 |
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258 case DEBUG_FUNCNAMES: |
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259 if (dbg->de_simple_name_headers[dwarf_snk_funcname]. |
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260 sn_head == NULL) |
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261 continue; |
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262 break; |
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263 |
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264 case DEBUG_TYPENAMES: |
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265 if (dbg->de_simple_name_headers[dwarf_snk_typename]. |
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266 sn_head == NULL) |
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267 continue; |
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268 break; |
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269 |
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270 case DEBUG_VARNAMES: |
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271 if (dbg->de_simple_name_headers[dwarf_snk_varname]. |
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272 sn_head == NULL) |
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273 continue; |
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274 break; |
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275 |
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276 case DEBUG_WEAKNAMES: |
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277 if (dbg->de_simple_name_headers[dwarf_snk_weakname]. |
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278 sn_head == NULL) |
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279 continue; |
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280 break; |
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281 |
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282 case DEBUG_MACINFO: |
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283 if (dbg->de_first_macinfo == NULL) |
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284 continue; |
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285 break; |
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286 case DEBUG_LOC: |
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287 /* not handled yet */ |
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288 continue; |
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289 default: |
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290 /* logic error: missing a case */ |
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291 DWARF_P_DBG_ERROR(dbg, DW_DLE_ELF_SECT_ERR, DW_DLV_NOCOUNT); |
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292 } |
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293 { |
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294 int new_base_elf_sect; |
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295 |
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296 if (dbg->de_func_b) { |
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297 new_base_elf_sect = |
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298 dbg->de_func_b(_dwarf_sectnames[sect], |
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299 /* rec size */ 1, |
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300 SECTION_TYPE, |
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301 flags, SHN_UNDEF, 0, &du, &err); |
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302 |
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303 } else { |
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304 new_base_elf_sect = dbg->de_func(_dwarf_sectnames[sect], |
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305 dbg-> |
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306 de_relocation_record_size, |
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307 SECTION_TYPE, flags, |
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308 SHN_UNDEF, 0, |
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309 &name_idx, &err); |
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310 du = name_idx; |
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311 } |
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312 if (new_base_elf_sect == -1) { |
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313 DWARF_P_DBG_ERROR(dbg, DW_DLE_ELF_SECT_ERR, |
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314 DW_DLV_NOCOUNT); |
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315 } |
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316 dbg->de_elf_sects[sect] = new_base_elf_sect; |
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317 |
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318 dbg->de_sect_name_idx[sect] = du; |
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319 } |
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320 } |
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321 |
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322 nbufs = 0; |
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323 |
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324 /* |
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325 Changing the order in which the sections are generated may cause |
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326 problems because of relocations. */ |
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327 |
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328 if (dwarf_need_debug_line_section(dbg) == TRUE) { |
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329 nbufs = _dwarf_pro_generate_debugline(dbg, error); |
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330 if (nbufs < 0) { |
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331 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGLINE_ERROR, |
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332 DW_DLV_NOCOUNT); |
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333 } |
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334 } |
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335 |
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336 if (dbg->de_frame_cies) { |
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337 nbufs = _dwarf_pro_generate_debugframe(dbg, error); |
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338 if (nbufs < 0) { |
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339 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGFRAME_ERROR, |
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340 DW_DLV_NOCOUNT); |
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341 } |
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342 } |
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343 if (dbg->de_first_macinfo) { |
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344 nbufs = _dwarf_pro_transform_macro_info_to_disk(dbg, error); |
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345 if (nbufs < 0) { |
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346 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGMACINFO_ERROR, |
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347 DW_DLV_NOCOUNT); |
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348 } |
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349 } |
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350 |
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351 if (dbg->de_dies) { |
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352 nbufs = _dwarf_pro_generate_debuginfo(dbg, error); |
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353 if (nbufs < 0) { |
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354 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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355 DW_DLV_NOCOUNT); |
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356 } |
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357 } |
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358 |
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359 if (dbg->de_arange) { |
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360 nbufs = _dwarf_transform_arange_to_disk(dbg, error); |
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361 if (nbufs < 0) { |
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362 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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363 DW_DLV_NOCOUNT); |
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364 } |
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365 } |
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366 |
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367 if (dbg->de_simple_name_headers[dwarf_snk_pubname].sn_head) { |
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368 nbufs = _dwarf_transform_simplename_to_disk(dbg, |
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369 dwarf_snk_pubname, |
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370 DEBUG_PUBNAMES, |
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371 error); |
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372 |
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373 |
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374 if (nbufs < 0) { |
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375 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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376 DW_DLV_NOCOUNT); |
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377 } |
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378 } |
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379 |
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380 if (dbg->de_simple_name_headers[dwarf_snk_funcname].sn_head) { |
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381 nbufs = _dwarf_transform_simplename_to_disk(dbg, |
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382 dwarf_snk_funcname, |
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383 DEBUG_FUNCNAMES, |
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384 error); |
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385 if (nbufs < 0) { |
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386 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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387 DW_DLV_NOCOUNT); |
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388 } |
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389 } |
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390 |
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391 if (dbg->de_simple_name_headers[dwarf_snk_typename].sn_head) { |
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392 nbufs = _dwarf_transform_simplename_to_disk(dbg, |
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393 dwarf_snk_typename, |
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394 DEBUG_TYPENAMES, |
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395 error); |
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396 if (nbufs < 0) { |
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397 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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398 DW_DLV_NOCOUNT); |
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399 } |
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400 } |
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401 |
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402 if (dbg->de_simple_name_headers[dwarf_snk_varname].sn_head) { |
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403 nbufs = _dwarf_transform_simplename_to_disk(dbg, |
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404 dwarf_snk_varname, |
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405 DEBUG_VARNAMES, |
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406 error); |
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407 |
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408 if (nbufs < 0) { |
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409 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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410 DW_DLV_NOCOUNT); |
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411 } |
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412 } |
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413 |
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414 if (dbg->de_simple_name_headers[dwarf_snk_weakname].sn_head) { |
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415 nbufs = _dwarf_transform_simplename_to_disk(dbg, |
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416 dwarf_snk_weakname, |
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417 DEBUG_WEAKNAMES, |
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418 error); |
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419 |
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420 if (nbufs < 0) { |
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421 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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422 DW_DLV_NOCOUNT); |
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423 } |
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424 } |
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425 |
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426 { |
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427 Dwarf_Signed new_secs; |
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428 int res; |
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429 |
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430 res = dbg->de_transform_relocs_to_disk(dbg, &new_secs); |
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431 if (res != DW_DLV_OK) { |
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432 DWARF_P_DBG_ERROR(dbg, DW_DLE_DEBUGINFO_ERROR, |
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433 DW_DLV_NOCOUNT); |
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434 } |
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435 nbufs += new_secs; |
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436 } |
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437 return nbufs; |
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438 } |
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439 |
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440 |
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441 /*--------------------------------------------------------------- |
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442 Generate debug_line section |
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443 ---------------------------------------------------------------*/ |
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444 static int |
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445 _dwarf_pro_generate_debugline(Dwarf_P_Debug dbg, Dwarf_Error * error) |
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446 { |
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447 Dwarf_P_Inc_Dir curdir = 0; |
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448 Dwarf_P_F_Entry curentry = 0; |
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449 Dwarf_P_Line curline = 0; |
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450 Dwarf_P_Line prevline = 0; |
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451 |
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452 /* all data named cur* are used to loop thru linked lists */ |
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453 |
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454 int sum_bytes = 0; |
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455 int prolog_size = 0; |
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456 unsigned char *data = 0; /* holds disk form data */ |
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457 int elfsectno = 0; |
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458 unsigned char *start_line_sec = 0; /* pointer to the buffer at |
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459 section start */ |
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460 /* temps for memcpy */ |
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461 Dwarf_Unsigned du = 0; |
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462 Dwarf_Ubyte db = 0; |
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463 Dwarf_Half dh = 0; |
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464 int res = 0; |
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465 int uwordb_size = dbg->de_offset_size; |
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466 int extension_size = dbg->de_64bit_extension ? 4 : 0; |
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467 int upointer_size = dbg->de_pointer_size; |
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468 char buff1[ENCODE_SPACE_NEEDED]; |
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469 |
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470 |
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471 |
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472 sum_bytes = 0; |
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473 |
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474 elfsectno = dbg->de_elf_sects[DEBUG_LINE]; |
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475 |
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476 /* include directories */ |
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477 curdir = dbg->de_inc_dirs; |
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478 while (curdir) { |
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479 prolog_size += strlen(curdir->did_name) + 1; |
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480 curdir = curdir->did_next; |
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481 } |
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482 prolog_size++; /* last null following last directory |
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483 entry. */ |
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484 |
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485 /* file entries */ |
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486 curentry = dbg->de_file_entries; |
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487 while (curentry) { |
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488 prolog_size += |
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489 strlen(curentry->dfe_name) + 1 + curentry->dfe_nbytes; |
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490 curentry = curentry->dfe_next; |
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491 } |
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492 prolog_size++; /* last null byte */ |
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493 |
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494 |
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495 prolog_size += BEGIN_LEN_SIZE + sizeof_uhalf(dbg) + /* version # */ |
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496 uwordb_size + /* header length */ |
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497 sizeof_ubyte(dbg) + /* min_instr length */ |
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498 sizeof_ubyte(dbg) + /* default is_stmt */ |
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499 sizeof_ubyte(dbg) + /* linebase */ |
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500 sizeof_ubyte(dbg) + /* linerange */ |
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501 sizeof_ubyte(dbg); /* opcode base */ |
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502 |
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503 /* length of table specifying # of opnds */ |
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504 prolog_size += sizeof(std_opcode_len); |
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505 |
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506 GET_CHUNK(dbg, elfsectno, data, prolog_size, error); |
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507 start_line_sec = data; |
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508 |
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509 /* copy over the data */ |
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510 /* total_length */ |
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511 du = 0; |
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512 if (extension_size) { |
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513 Dwarf_Word x = DISTINGUISHED_VALUE; |
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514 |
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515 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &x, |
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516 sizeof(x), extension_size); |
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517 data += extension_size; |
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518 } |
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519 |
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520 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &du, |
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521 sizeof(du), uwordb_size); |
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522 data += uwordb_size; |
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523 |
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524 dh = VERSION; |
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525 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &dh, |
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526 sizeof(dh), sizeof(Dwarf_Half)); |
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527 data += sizeof(Dwarf_Half); |
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528 |
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529 /* header length */ |
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530 du = prolog_size - (BEGIN_LEN_SIZE + sizeof(Dwarf_Half) + |
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531 uwordb_size); |
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532 { |
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533 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &du, |
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534 sizeof(du), uwordb_size); |
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535 data += uwordb_size; |
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536 } |
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537 db = MIN_INST_LENGTH; |
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538 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
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539 sizeof(db), sizeof(Dwarf_Ubyte)); |
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540 data += sizeof(Dwarf_Ubyte); |
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541 db = DEFAULT_IS_STMT; |
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542 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
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543 sizeof(db), sizeof(Dwarf_Ubyte)); |
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544 data += sizeof(Dwarf_Ubyte); |
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545 db = (Dwarf_Ubyte) LINE_BASE; |
|
546 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
547 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
548 data += sizeof(Dwarf_Ubyte); |
|
549 db = LINE_RANGE; |
|
550 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
551 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
552 data += sizeof(Dwarf_Ubyte); |
|
553 db = OPCODE_BASE; |
|
554 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
555 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
556 data += sizeof(Dwarf_Ubyte); |
|
557 WRITE_UNALIGNED(dbg, (void *) data, (const void *) std_opcode_len, |
|
558 sizeof(std_opcode_len), sizeof(std_opcode_len)); |
|
559 data += sizeof(std_opcode_len); |
|
560 |
|
561 /* copy over include directories */ |
|
562 curdir = dbg->de_inc_dirs; |
|
563 while (curdir) { |
|
564 strcpy((char *) data, curdir->did_name); |
|
565 data += strlen(curdir->did_name) + 1; |
|
566 curdir = curdir->did_next; |
|
567 } |
|
568 *data = '\0'; /* last null */ |
|
569 data++; |
|
570 |
|
571 /* copy file entries */ |
|
572 curentry = dbg->de_file_entries; |
|
573 while (curentry) { |
|
574 strcpy((char *) data, curentry->dfe_name); |
|
575 data += strlen(curentry->dfe_name) + 1; |
|
576 /* copies of leb numbers, no endian issues */ |
|
577 memcpy((void *) data, |
|
578 (const void *) curentry->dfe_args, curentry->dfe_nbytes); |
|
579 data += curentry->dfe_nbytes; |
|
580 curentry = curentry->dfe_next; |
|
581 } |
|
582 *data = '\0'; |
|
583 data++; |
|
584 |
|
585 sum_bytes += prolog_size; |
|
586 |
|
587 curline = dbg->de_lines; |
|
588 prevline = (Dwarf_P_Line) |
|
589 _dwarf_p_get_alloc(dbg, sizeof(struct Dwarf_P_Line_s)); |
|
590 if (prevline == NULL) { |
|
591 DWARF_P_DBG_ERROR(dbg, DW_DLE_LINE_ALLOC, -1); |
|
592 } |
|
593 _dwarf_pro_reg_init(prevline); |
|
594 /* generate opcodes for line numbers */ |
|
595 while (curline) { |
|
596 int nbytes; |
|
597 char *arg; |
|
598 int opc; |
|
599 int no_lns_copy; /* if lns copy opcode doesnt need to be |
|
600 generated, if special opcode or end |
|
601 sequence */ |
|
602 Dwarf_Unsigned addr_adv; |
|
603 int line_adv; /* supposed to be a reasonably small |
|
604 number, so the size should not be a |
|
605 problem. ? */ |
|
606 |
|
607 no_lns_copy = 0; |
|
608 if (curline->dpl_opc != 0) { |
|
609 int inst_bytes; /* no of bytes in extended opcode */ |
|
610 char *str; /* hold leb encoded inst_bytes */ |
|
611 int str_nbytes; /* no of bytes in str */ |
|
612 |
|
613 switch (curline->dpl_opc) { |
|
614 case DW_LNE_end_sequence: |
|
615 |
|
616 /* Advance pc to end of text section. */ |
|
617 addr_adv = curline->dpl_address - prevline->dpl_address; |
|
618 if (addr_adv > 0) { |
|
619 db = DW_LNS_advance_pc; |
|
620 res = |
|
621 _dwarf_pro_encode_leb128_nm(addr_adv / |
|
622 MIN_INST_LENGTH, |
|
623 &nbytes, buff1, |
|
624 sizeof(buff1)); |
|
625 if (res != DW_DLV_OK) { |
|
626 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
627 } |
|
628 GET_CHUNK(dbg, elfsectno, data, |
|
629 nbytes + sizeof(Dwarf_Ubyte), error); |
|
630 WRITE_UNALIGNED(dbg, (void *) data, |
|
631 (const void *) &db, sizeof(db), |
|
632 sizeof(Dwarf_Ubyte)); |
|
633 data += sizeof(Dwarf_Ubyte); |
|
634 /* leb, no endianness issue */ |
|
635 memcpy((void *) data, (const void *) buff1, nbytes); |
|
636 data += nbytes + sizeof(Dwarf_Ubyte); |
|
637 sum_bytes += nbytes + sizeof(Dwarf_Ubyte); |
|
638 prevline->dpl_address = curline->dpl_address; |
|
639 } |
|
640 |
|
641 /* first null byte */ |
|
642 db = 0; |
|
643 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
644 error); |
|
645 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
646 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
647 data += sizeof(Dwarf_Ubyte); |
|
648 sum_bytes += sizeof(Dwarf_Ubyte); |
|
649 |
|
650 /* write length of extended opcode */ |
|
651 inst_bytes = sizeof(Dwarf_Ubyte); |
|
652 res = |
|
653 _dwarf_pro_encode_leb128_nm(inst_bytes, &str_nbytes, |
|
654 buff1, sizeof(buff1)); |
|
655 if (res != DW_DLV_OK) { |
|
656 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
657 } |
|
658 GET_CHUNK(dbg, elfsectno, data, str_nbytes, error); |
|
659 memcpy((void *) data, (const void *) buff1, str_nbytes); |
|
660 data += str_nbytes; |
|
661 sum_bytes += str_nbytes; |
|
662 |
|
663 /* write extended opcode */ |
|
664 db = DW_LNE_end_sequence; |
|
665 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
666 error); |
|
667 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
668 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
669 data += sizeof(Dwarf_Ubyte); |
|
670 sum_bytes += sizeof(Dwarf_Ubyte); |
|
671 /* reset value to original values */ |
|
672 _dwarf_pro_reg_init(prevline); |
|
673 no_lns_copy = 1; |
|
674 /* this is set only for end_sequence, so that a |
|
675 dw_lns_copy is not generated */ |
|
676 break; |
|
677 |
|
678 case DW_LNE_set_address: |
|
679 |
|
680 /* first null byte */ |
|
681 db = 0; |
|
682 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
683 error); |
|
684 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
685 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
686 data += sizeof(Dwarf_Ubyte); |
|
687 sum_bytes += sizeof(Dwarf_Ubyte); |
|
688 |
|
689 /* write length of extended opcode */ |
|
690 inst_bytes = sizeof(Dwarf_Ubyte) + upointer_size; |
|
691 res = |
|
692 _dwarf_pro_encode_leb128_nm(inst_bytes, &str_nbytes, |
|
693 buff1, sizeof(buff1)); |
|
694 if (res != DW_DLV_OK) { |
|
695 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
696 } |
|
697 GET_CHUNK(dbg, elfsectno, data, str_nbytes, error); |
|
698 str = buff1; |
|
699 /* leb number, no endian issue */ |
|
700 memcpy((void *) data, (const void *) str, str_nbytes); |
|
701 data += str_nbytes; |
|
702 sum_bytes += str_nbytes; |
|
703 |
|
704 /* write extended opcode */ |
|
705 db = DW_LNE_set_address; |
|
706 GET_CHUNK(dbg, elfsectno, data, upointer_size + |
|
707 sizeof(Dwarf_Ubyte), error); |
|
708 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
709 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
710 data += sizeof(Dwarf_Ubyte); |
|
711 sum_bytes += sizeof(Dwarf_Ubyte); |
|
712 |
|
713 /* reloc for address */ |
|
714 res = dbg->de_reloc_name(dbg, DEBUG_LINE, sum_bytes, /* r_offset |
|
715 */ |
|
716 curline->dpl_r_symidx, |
|
717 dwarf_drt_data_reloc, |
|
718 uwordb_size); |
|
719 if (res != DW_DLV_OK) { |
|
720 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
721 } |
|
722 |
|
723 /* write offset (address) */ |
|
724 du = curline->dpl_address; |
|
725 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &du, |
|
726 sizeof(du), upointer_size); |
|
727 data += upointer_size; |
|
728 sum_bytes += upointer_size; |
|
729 prevline->dpl_address = curline->dpl_address; |
|
730 no_lns_copy = 1; |
|
731 break; |
|
732 } |
|
733 } else { |
|
734 if (curline->dpl_file != prevline->dpl_file) { |
|
735 db = DW_LNS_set_file; |
|
736 res = |
|
737 _dwarf_pro_encode_leb128_nm(curline->dpl_file, |
|
738 &nbytes, buff1, |
|
739 sizeof(buff1)); |
|
740 if (res != DW_DLV_OK) { |
|
741 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
742 } |
|
743 arg = buff1; |
|
744 GET_CHUNK(dbg, elfsectno, data, |
|
745 nbytes + sizeof(Dwarf_Ubyte), error); |
|
746 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
747 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
748 data += sizeof(Dwarf_Ubyte); |
|
749 memcpy((void *) data, (const void *) arg, nbytes); |
|
750 data += nbytes; |
|
751 sum_bytes += nbytes + sizeof(Dwarf_Ubyte); |
|
752 prevline->dpl_file = curline->dpl_file; |
|
753 } |
|
754 if (curline->dpl_column != prevline->dpl_column) { |
|
755 db = DW_LNS_set_column; |
|
756 res = _dwarf_pro_encode_leb128_nm(curline->dpl_column, |
|
757 &nbytes, |
|
758 buff1, sizeof(buff1)); |
|
759 if (res != DW_DLV_OK) { |
|
760 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
761 } |
|
762 |
|
763 arg = buff1; |
|
764 GET_CHUNK(dbg, elfsectno, data, |
|
765 nbytes + sizeof(Dwarf_Ubyte), error); |
|
766 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
767 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
768 data += sizeof(Dwarf_Ubyte); |
|
769 memcpy((void *) data, (const void *) arg, nbytes); |
|
770 data += nbytes; |
|
771 sum_bytes += nbytes + sizeof(Dwarf_Ubyte); |
|
772 prevline->dpl_column = curline->dpl_column; |
|
773 } |
|
774 if (curline->dpl_is_stmt != prevline->dpl_is_stmt) { |
|
775 db = DW_LNS_negate_stmt; |
|
776 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
777 error); |
|
778 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
779 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
780 data += sizeof(Dwarf_Ubyte); |
|
781 sum_bytes += sizeof(Dwarf_Ubyte); |
|
782 prevline->dpl_is_stmt = curline->dpl_is_stmt; |
|
783 } |
|
784 if (curline->dpl_basic_block == true && |
|
785 prevline->dpl_basic_block == false) { |
|
786 db = DW_LNS_set_basic_block; |
|
787 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
788 error); |
|
789 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
790 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
791 data += sizeof(Dwarf_Ubyte); |
|
792 sum_bytes += sizeof(Dwarf_Ubyte); |
|
793 prevline->dpl_basic_block = curline->dpl_basic_block; |
|
794 } |
|
795 addr_adv = curline->dpl_address - prevline->dpl_address; |
|
796 |
|
797 line_adv = (int) (curline->dpl_line - prevline->dpl_line); |
|
798 if ((addr_adv % MIN_INST_LENGTH) != 0) { |
|
799 DWARF_P_DBG_ERROR(dbg, DW_DLE_WRONG_ADDRESS, -1); |
|
800 } |
|
801 if ((opc = _dwarf_pro_get_opc(addr_adv, line_adv)) > 0) { |
|
802 no_lns_copy = 1; |
|
803 db = opc; |
|
804 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), |
|
805 error); |
|
806 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
807 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
808 data += sizeof(Dwarf_Ubyte); |
|
809 sum_bytes += sizeof(Dwarf_Ubyte); |
|
810 prevline->dpl_basic_block = false; |
|
811 prevline->dpl_address = curline->dpl_address; |
|
812 prevline->dpl_line = curline->dpl_line; |
|
813 } else { |
|
814 if (addr_adv > 0) { |
|
815 db = DW_LNS_advance_pc; |
|
816 res = |
|
817 _dwarf_pro_encode_leb128_nm(addr_adv / |
|
818 MIN_INST_LENGTH, |
|
819 &nbytes, buff1, |
|
820 sizeof(buff1)); |
|
821 if (res != DW_DLV_OK) { |
|
822 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
823 } |
|
824 |
|
825 arg = buff1; |
|
826 GET_CHUNK(dbg, elfsectno, data, |
|
827 nbytes + sizeof(Dwarf_Ubyte), error); |
|
828 WRITE_UNALIGNED(dbg, (void *) data, |
|
829 (const void *) &db, |
|
830 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
831 data += sizeof(Dwarf_Ubyte); |
|
832 memcpy((void *) data, (const void *) arg, nbytes); |
|
833 data += nbytes + sizeof(Dwarf_Ubyte); |
|
834 sum_bytes += nbytes + sizeof(Dwarf_Ubyte); |
|
835 prevline->dpl_basic_block = false; |
|
836 prevline->dpl_address = curline->dpl_address; |
|
837 } |
|
838 if (line_adv != 0) { |
|
839 db = DW_LNS_advance_line; |
|
840 res = _dwarf_pro_encode_signed_leb128_nm(line_adv, |
|
841 &nbytes, |
|
842 buff1, |
|
843 sizeof |
|
844 (buff1)); |
|
845 if (res != DW_DLV_OK) { |
|
846 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
847 } |
|
848 |
|
849 arg = buff1; |
|
850 GET_CHUNK(dbg, elfsectno, data, |
|
851 nbytes + sizeof(Dwarf_Ubyte), error); |
|
852 WRITE_UNALIGNED(dbg, (void *) data, |
|
853 (const void *) &db, sizeof(db), |
|
854 sizeof(Dwarf_Ubyte)); |
|
855 data += sizeof(Dwarf_Ubyte); |
|
856 memcpy((void *) data, (const void *) arg, nbytes); |
|
857 data += nbytes + sizeof(Dwarf_Ubyte); |
|
858 sum_bytes += nbytes + sizeof(Dwarf_Ubyte); |
|
859 prevline->dpl_basic_block = false; |
|
860 prevline->dpl_line = curline->dpl_line; |
|
861 } |
|
862 } |
|
863 } /* ends else for opc != 0 */ |
|
864 if (no_lns_copy == 0) { /* if not a special or dw_lne_end_seq |
|
865 generate a matrix line */ |
|
866 db = DW_LNS_copy; |
|
867 GET_CHUNK(dbg, elfsectno, data, sizeof(Dwarf_Ubyte), error); |
|
868 WRITE_UNALIGNED(dbg, (void *) data, |
|
869 (const void *) &db, |
|
870 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
871 data += sizeof(Dwarf_Ubyte); |
|
872 sum_bytes += sizeof(Dwarf_Ubyte); |
|
873 prevline->dpl_basic_block = false; |
|
874 } |
|
875 curline = curline->dpl_next; |
|
876 } |
|
877 |
|
878 /* write total length field */ |
|
879 du = sum_bytes - BEGIN_LEN_SIZE; |
|
880 { |
|
881 start_line_sec += extension_size; |
|
882 WRITE_UNALIGNED(dbg, (void *) start_line_sec, |
|
883 (const void *) &du, sizeof(du), uwordb_size); |
|
884 } |
|
885 |
|
886 return (int) dbg->de_n_debug_sect; |
|
887 } |
|
888 |
|
889 /*--------------------------------------------------------------- |
|
890 Generate debug_frame section |
|
891 ---------------------------------------------------------------*/ |
|
892 static int |
|
893 _dwarf_pro_generate_debugframe(Dwarf_P_Debug dbg, Dwarf_Error * error) |
|
894 { |
|
895 int elfsectno; |
|
896 int i; |
|
897 int firsttime = 1; |
|
898 int pad; /* pad for padding to align cies and |
|
899 fdes */ |
|
900 Dwarf_P_Cie curcie; |
|
901 Dwarf_P_Fde curfde; |
|
902 unsigned char *data; |
|
903 Dwarf_sfixed dsw; |
|
904 Dwarf_Unsigned du; |
|
905 Dwarf_Ubyte db; |
|
906 long *cie_offs; /* holds byte offsets for links to |
|
907 fde's */ |
|
908 unsigned long cie_length; |
|
909 int cie_no; |
|
910 int uwordb_size = dbg->de_offset_size; |
|
911 int extension_size = dbg->de_64bit_extension ? 4 : 0; |
|
912 int upointer_size = dbg->de_pointer_size; |
|
913 Dwarf_Unsigned cur_off; /* current offset of written data, held |
|
914 for relocation info */ |
|
915 |
|
916 elfsectno = dbg->de_elf_sects[DEBUG_FRAME]; |
|
917 |
|
918 curcie = dbg->de_frame_cies; |
|
919 cie_length = 0; |
|
920 cur_off = 0; |
|
921 cie_offs = (long *) |
|
922 _dwarf_p_get_alloc(dbg, sizeof(long) * dbg->de_n_cie); |
|
923 if (cie_offs == NULL) { |
|
924 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_OFFS_ALLOC, -1); |
|
925 } |
|
926 /* generate cie number as we go along */ |
|
927 cie_no = 1; |
|
928 while (curcie) { |
|
929 char *code_al; |
|
930 int c_bytes; |
|
931 char *data_al; |
|
932 int d_bytes; |
|
933 int res; |
|
934 char buff1[ENCODE_SPACE_NEEDED]; |
|
935 char buff2[ENCODE_SPACE_NEEDED]; |
|
936 char buff3[ENCODE_SPACE_NEEDED]; |
|
937 char *augmentation; |
|
938 char *augmented_al; |
|
939 long augmented_fields_length; |
|
940 int a_bytes; |
|
941 |
|
942 res = _dwarf_pro_encode_leb128_nm(curcie->cie_code_align, |
|
943 &c_bytes, |
|
944 buff1, sizeof(buff1)); |
|
945 if (res != DW_DLV_OK) { |
|
946 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_OFFS_ALLOC, -1); |
|
947 } |
|
948 /* Before April 1999, the following was using an unsigned |
|
949 encode. That worked ok even though the decoder used the |
|
950 correct signed leb read, but doing the encode correctly |
|
951 (according to the dwarf spec) saves space in the output file |
|
952 and is completely compatible. |
|
953 |
|
954 Note the actual stored amount on MIPS was 10 bytes (!) to |
|
955 store the value -4. (hex)fc ffffffff ffffffff 01 The |
|
956 libdwarf consumer consumed all 10 bytes too! |
|
957 |
|
958 old version res = |
|
959 _dwarf_pro_encode_leb128_nm(curcie->cie_data_align, |
|
960 |
|
961 below is corrected signed version. */ |
|
962 res = _dwarf_pro_encode_signed_leb128_nm(curcie->cie_data_align, |
|
963 &d_bytes, |
|
964 buff2, sizeof(buff2)); |
|
965 if (res != DW_DLV_OK) { |
|
966 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_OFFS_ALLOC, -1); |
|
967 } |
|
968 code_al = buff1; |
|
969 data_al = buff2; |
|
970 |
|
971 /* get the correct offset */ |
|
972 if (firsttime) { |
|
973 cie_offs[cie_no - 1] = 0; |
|
974 firsttime = 0; |
|
975 } else { |
|
976 cie_offs[cie_no - 1] = cie_offs[cie_no - 2] + |
|
977 (long) cie_length + BEGIN_LEN_SIZE; |
|
978 } |
|
979 cie_no++; |
|
980 augmentation = curcie->cie_aug; |
|
981 if (strcmp(augmentation, DW_CIE_AUGMENTER_STRING_V0) == 0) { |
|
982 augmented_fields_length = 0; |
|
983 res = _dwarf_pro_encode_leb128_nm(augmented_fields_length, |
|
984 &a_bytes, buff3, |
|
985 sizeof(buff3)); |
|
986 augmented_al = buff3; |
|
987 if (res != DW_DLV_OK) { |
|
988 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_OFFS_ALLOC, -1); |
|
989 } |
|
990 cie_length = uwordb_size + /* cie_id */ |
|
991 sizeof(Dwarf_Ubyte) + /* cie version */ |
|
992 strlen(curcie->cie_aug) + 1 + /* augmentation */ |
|
993 c_bytes + /* code alignment factor */ |
|
994 d_bytes + /* data alignment factor */ |
|
995 sizeof(Dwarf_Ubyte) + /* return reg address */ |
|
996 a_bytes + /* augmentation length */ |
|
997 curcie->cie_inst_bytes; |
|
998 } else { |
|
999 cie_length = uwordb_size + /* cie_id */ |
|
1000 sizeof(Dwarf_Ubyte) + /* cie version */ |
|
1001 strlen(curcie->cie_aug) + 1 + /* augmentation */ |
|
1002 c_bytes + d_bytes + sizeof(Dwarf_Ubyte) + /* return |
|
1003 reg |
|
1004 address |
|
1005 */ |
|
1006 curcie->cie_inst_bytes; |
|
1007 } |
|
1008 pad = (int) PADDING(cie_length, upointer_size); |
|
1009 cie_length += pad; |
|
1010 GET_CHUNK(dbg, elfsectno, data, cie_length + |
|
1011 BEGIN_LEN_SIZE, error); |
|
1012 if (extension_size) { |
|
1013 Dwarf_Unsigned x = DISTINGUISHED_VALUE; |
|
1014 |
|
1015 WRITE_UNALIGNED(dbg, (void *) data, |
|
1016 (const void *) &x, |
|
1017 sizeof(x), extension_size); |
|
1018 data += extension_size; |
|
1019 |
|
1020 } |
|
1021 du = cie_length; |
|
1022 /* total length of cie */ |
|
1023 WRITE_UNALIGNED(dbg, (void *) data, |
|
1024 (const void *) &du, sizeof(du), uwordb_size); |
|
1025 data += uwordb_size; |
|
1026 |
|
1027 /* cie-id is a special value. */ |
|
1028 du = DW_CIE_ID; |
|
1029 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &du, |
|
1030 sizeof(du), uwordb_size); |
|
1031 data += uwordb_size; |
|
1032 |
|
1033 db = curcie->cie_version; |
|
1034 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
1035 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
1036 data += sizeof(Dwarf_Ubyte); |
|
1037 strcpy((char *) data, curcie->cie_aug); |
|
1038 data += strlen(curcie->cie_aug) + 1; |
|
1039 memcpy((void *) data, (const void *) code_al, c_bytes); |
|
1040 data += c_bytes; |
|
1041 memcpy((void *) data, (const void *) data_al, d_bytes); |
|
1042 data += d_bytes; |
|
1043 db = curcie->cie_ret_reg; |
|
1044 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
1045 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
1046 data += sizeof(Dwarf_Ubyte); |
|
1047 |
|
1048 if (strcmp(augmentation, DW_CIE_AUGMENTER_STRING_V0) == 0) { |
|
1049 memcpy((void *) data, (const void *) augmented_al, a_bytes); |
|
1050 data += a_bytes; |
|
1051 } |
|
1052 memcpy((void *) data, (const void *) curcie->cie_inst, |
|
1053 curcie->cie_inst_bytes); |
|
1054 data += curcie->cie_inst_bytes; |
|
1055 for (i = 0; i < pad; i++) { |
|
1056 *data = DW_CFA_nop; |
|
1057 data++; |
|
1058 } |
|
1059 curcie = curcie->cie_next; |
|
1060 } |
|
1061 /* calculate current offset */ |
|
1062 cur_off = cie_offs[cie_no - 2] + cie_length + BEGIN_LEN_SIZE; |
|
1063 |
|
1064 /* write out fde's */ |
|
1065 curfde = dbg->de_frame_fdes; |
|
1066 while (curfde) { |
|
1067 Dwarf_P_Frame_Pgm curinst; |
|
1068 long fde_length; |
|
1069 int pad; |
|
1070 Dwarf_P_Cie cie_ptr; |
|
1071 Dwarf_Word cie_index, index; |
|
1072 int oet_length, afl_length, res; |
|
1073 int v0_augmentation = 0; |
|
1074 |
|
1075 #if 0 |
|
1076 unsigned char *fde_start_point; |
|
1077 #endif |
|
1078 |
|
1079 char afl_buff[ENCODE_SPACE_NEEDED]; |
|
1080 |
|
1081 /* Find the CIE associated with this fde. */ |
|
1082 cie_ptr = dbg->de_frame_cies; |
|
1083 cie_index = curfde->fde_cie; |
|
1084 index = 1; /* The cie_index of the first cie is 1, |
|
1085 not 0. */ |
|
1086 while (cie_ptr && index < cie_index) { |
|
1087 cie_ptr = cie_ptr->cie_next; |
|
1088 index++; |
|
1089 } |
|
1090 if (cie_ptr == NULL) { |
|
1091 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_NULL, -1); |
|
1092 } |
|
1093 |
|
1094 if (strcmp(cie_ptr->cie_aug, DW_CIE_AUGMENTER_STRING_V0) == 0) { |
|
1095 v0_augmentation = 1; |
|
1096 oet_length = sizeof(Dwarf_sfixed); |
|
1097 /* encode the length of augmented fields. */ |
|
1098 res = _dwarf_pro_encode_leb128_nm(oet_length, |
|
1099 &afl_length, afl_buff, |
|
1100 sizeof(afl_buff)); |
|
1101 if (res != DW_DLV_OK) { |
|
1102 DWARF_P_DBG_ERROR(dbg, DW_DLE_CIE_OFFS_ALLOC, -1); |
|
1103 } |
|
1104 |
|
1105 fde_length = curfde->fde_n_bytes + BEGIN_LEN_SIZE + /* cie |
|
1106 pointer |
|
1107 */ |
|
1108 upointer_size + /* initial loc */ |
|
1109 upointer_size + /* address range */ |
|
1110 afl_length + /* augmented field length */ |
|
1111 oet_length; /* exception_table offset */ |
|
1112 } else { |
|
1113 fde_length = curfde->fde_n_bytes + BEGIN_LEN_SIZE + /* cie |
|
1114 pointer |
|
1115 */ |
|
1116 upointer_size + /* initial loc */ |
|
1117 upointer_size; /* address range */ |
|
1118 } |
|
1119 |
|
1120 /* using fde offset, generate DW_AT_MIPS_fde attribute for the |
|
1121 die corresponding to this fde */ |
|
1122 if (_dwarf_pro_add_AT_fde(dbg, curfde->fde_die, cur_off, error) |
|
1123 < 0) |
|
1124 return -1; |
|
1125 |
|
1126 /* store relocation for cie pointer */ |
|
1127 res = dbg->de_reloc_name(dbg, DEBUG_FRAME, cur_off + |
|
1128 BEGIN_LEN_SIZE, |
|
1129 /* r_offset */ |
|
1130 dbg->de_sect_name_idx[DEBUG_FRAME], |
|
1131 dwarf_drt_data_reloc, uwordb_size); |
|
1132 if (res != DW_DLV_OK) { |
|
1133 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
1134 } |
|
1135 |
|
1136 /* store relocation information for initial location */ |
|
1137 res = dbg->de_reloc_name(dbg, DEBUG_FRAME, |
|
1138 cur_off + BEGIN_LEN_SIZE + |
|
1139 upointer_size, |
|
1140 /* r_offset */ |
|
1141 curfde->fde_r_symidx, |
|
1142 dwarf_drt_data_reloc, upointer_size); |
|
1143 if (res != DW_DLV_OK) { |
|
1144 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
1145 } |
|
1146 /* Store the relocation information for the |
|
1147 offset_into_exception_info field, if the offset is valid (0 |
|
1148 is a valid offset). */ |
|
1149 if (v0_augmentation && |
|
1150 curfde->fde_offset_into_exception_tables >= 0) { |
|
1151 |
|
1152 res = dbg->de_reloc_name(dbg, DEBUG_FRAME, |
|
1153 /* r_offset, where in cie this |
|
1154 field starts */ |
|
1155 cur_off + BEGIN_LEN_SIZE + |
|
1156 uwordb_size + 2 * upointer_size + |
|
1157 afl_length, |
|
1158 curfde->fde_exception_table_symbol, |
|
1159 dwarf_drt_segment_rel, |
|
1160 sizeof(Dwarf_sfixed)); |
|
1161 if (res != DW_DLV_OK) { |
|
1162 DWARF_P_DBG_ERROR(dbg, DW_DLE_CHUNK_ALLOC, -1); |
|
1163 } |
|
1164 } |
|
1165 |
|
1166 /* adjust for padding */ |
|
1167 pad = (int) PADDING(fde_length, upointer_size); |
|
1168 fde_length += pad; |
|
1169 |
|
1170 |
|
1171 /* write out fde */ |
|
1172 GET_CHUNK(dbg, elfsectno, data, fde_length + BEGIN_LEN_SIZE, |
|
1173 error); |
|
1174 #if 0 |
|
1175 fde_start_point = data; |
|
1176 #endif |
|
1177 du = fde_length; |
|
1178 { |
|
1179 if (extension_size) { |
|
1180 Dwarf_Word x = DISTINGUISHED_VALUE; |
|
1181 |
|
1182 WRITE_UNALIGNED(dbg, (void *) data, |
|
1183 (const void *) &x, |
|
1184 sizeof(x), extension_size); |
|
1185 data += extension_size; |
|
1186 } |
|
1187 /* length */ |
|
1188 WRITE_UNALIGNED(dbg, (void *) data, |
|
1189 (const void *) &du, |
|
1190 sizeof(du), uwordb_size); |
|
1191 data += uwordb_size; |
|
1192 |
|
1193 /* offset to cie */ |
|
1194 du = cie_offs[curfde->fde_cie - 1]; |
|
1195 WRITE_UNALIGNED(dbg, (void *) data, |
|
1196 (const void *) &du, |
|
1197 sizeof(du), uwordb_size); |
|
1198 data += uwordb_size; |
|
1199 |
|
1200 du = curfde->fde_initloc; |
|
1201 WRITE_UNALIGNED(dbg, (void *) data, |
|
1202 (const void *) &du, |
|
1203 sizeof(du), upointer_size); |
|
1204 data += upointer_size; |
|
1205 |
|
1206 if (dbg->de_reloc_pair && |
|
1207 curfde->fde_end_symbol != 0 && |
|
1208 curfde->fde_addr_range == 0) { |
|
1209 /* symbolic reloc, need reloc for length What if we |
|
1210 really know the length? If so, should use the other |
|
1211 part of 'if'. */ |
|
1212 Dwarf_Unsigned val; |
|
1213 |
|
1214 res = dbg->de_reloc_pair(dbg, |
|
1215 /* DEBUG_ARANGES, */ |
|
1216 DEBUG_FRAME, cur_off + 2 * uwordb_size + upointer_size, /* r_offset |
|
1217 */ |
|
1218 curfde->fde_r_symidx, |
|
1219 curfde->fde_end_symbol, |
|
1220 dwarf_drt_first_of_length_pair, |
|
1221 upointer_size); |
|
1222 if (res != DW_DLV_OK) { |
|
1223 { |
|
1224 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
|
1225 return (0); |
|
1226 } |
|
1227 } |
|
1228 |
|
1229 /* arrange pre-calc so assem text can do .word end - |
|
1230 begin + val (gets val from stream) */ |
|
1231 val = curfde->fde_end_symbol_offset - |
|
1232 curfde->fde_initloc; |
|
1233 WRITE_UNALIGNED(dbg, data, |
|
1234 (const void *) &val, |
|
1235 sizeof(val), upointer_size); |
|
1236 data += upointer_size; |
|
1237 } else { |
|
1238 |
|
1239 du = curfde->fde_addr_range; |
|
1240 WRITE_UNALIGNED(dbg, (void *) data, |
|
1241 (const void *) &du, |
|
1242 sizeof(du), upointer_size); |
|
1243 data += upointer_size; |
|
1244 } |
|
1245 } |
|
1246 |
|
1247 if (v0_augmentation) { |
|
1248 /* write the encoded augmented field length. */ |
|
1249 memcpy((void *) data, (const void *) afl_buff, afl_length); |
|
1250 data += afl_length; |
|
1251 /* write the offset_into_exception_tables field. */ |
|
1252 dsw = |
|
1253 (Dwarf_sfixed) curfde->fde_offset_into_exception_tables; |
|
1254 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &dsw, |
|
1255 sizeof(dsw), sizeof(Dwarf_sfixed)); |
|
1256 data += sizeof(Dwarf_sfixed); |
|
1257 } |
|
1258 |
|
1259 curinst = curfde->fde_inst; |
|
1260 while (curinst) { |
|
1261 db = curinst->dfp_opcode; |
|
1262 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
1263 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
1264 data += sizeof(Dwarf_Ubyte); |
|
1265 #if 0 |
|
1266 if (curinst->dfp_sym_index) { |
|
1267 int res; |
|
1268 |
|
1269 res = dbg->de_reloc_name(dbg, |
|
1270 DEBUG_FRAME, |
|
1271 (data - fde_start_point) |
|
1272 + cur_off + uwordb_size, /* r_offset |
|
1273 */ |
|
1274 curinst->dfp_sym_index, |
|
1275 dwarf_drt_data_reloc, |
|
1276 upointer_size); |
|
1277 if (res != DW_DLV_OK) { |
|
1278 { |
|
1279 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
|
1280 return (0); |
|
1281 } |
|
1282 } |
|
1283 } |
|
1284 #endif |
|
1285 memcpy((void *) data, |
|
1286 (const void *) curinst->dfp_args, |
|
1287 curinst->dfp_nbytes); |
|
1288 data += curinst->dfp_nbytes; |
|
1289 curinst = curinst->dfp_next; |
|
1290 } |
|
1291 /* padding */ |
|
1292 for (i = 0; i < pad; i++) { |
|
1293 *data = DW_CFA_nop; |
|
1294 data++; |
|
1295 } |
|
1296 cur_off += fde_length + uwordb_size; |
|
1297 curfde = curfde->fde_next; |
|
1298 } |
|
1299 |
|
1300 |
|
1301 return (int) dbg->de_n_debug_sect; |
|
1302 } |
|
1303 |
|
1304 /* |
|
1305 These functions remember all the markers we see along |
|
1306 with the right offset in the .debug_info section so that |
|
1307 we can dump them all back to the user with the section info. |
|
1308 */ |
|
1309 |
|
1310 static int |
|
1311 marker_init(Dwarf_P_Debug dbg, |
|
1312 unsigned count) |
|
1313 { |
|
1314 dbg->de_marker_n_alloc = count; |
|
1315 dbg->de_markers = NULL; |
|
1316 if (count > 0) { |
|
1317 dbg->de_markers = _dwarf_p_get_alloc(dbg, sizeof(struct Dwarf_P_Marker_s) * |
|
1318 dbg->de_marker_n_alloc); |
|
1319 if (dbg->de_markers == NULL) { |
|
1320 dbg->de_marker_n_alloc = 0; |
|
1321 return -1; |
|
1322 } |
|
1323 } |
|
1324 return 0; |
|
1325 } |
|
1326 |
|
1327 static int |
|
1328 marker_add(Dwarf_P_Debug dbg, |
|
1329 Dwarf_Unsigned offset, |
|
1330 Dwarf_Unsigned marker) |
|
1331 { |
|
1332 if (dbg->de_marker_n_alloc >= (dbg->de_marker_n_used + 1)) { |
|
1333 unsigned n = dbg->de_marker_n_used++; |
|
1334 dbg->de_markers[n].ma_offset = offset; |
|
1335 dbg->de_markers[n].ma_marker = marker; |
|
1336 return 0; |
|
1337 } |
|
1338 |
|
1339 return -1; |
|
1340 } |
|
1341 |
|
1342 Dwarf_Signed |
|
1343 dwarf_get_die_markers(Dwarf_P_Debug dbg, |
|
1344 Dwarf_P_Marker * marker_list, /* pointer to a pointer */ |
|
1345 Dwarf_Unsigned * marker_count, |
|
1346 Dwarf_Error * error) |
|
1347 { |
|
1348 if (marker_list == NULL || marker_count == NULL) { |
|
1349 DWARF_P_DBG_ERROR(dbg, DW_DLE_IA, DW_DLV_BADADDR); |
|
1350 } |
|
1351 if (dbg->de_marker_n_used != dbg->de_marker_n_alloc) { |
|
1352 DWARF_P_DBG_ERROR(dbg, DW_DLE_MAF, DW_DLV_BADADDR); |
|
1353 } |
|
1354 |
|
1355 *marker_list = dbg->de_markers; |
|
1356 *marker_count = dbg->de_marker_n_used; |
|
1357 return DW_DLV_OK; |
|
1358 } |
|
1359 |
|
1360 /* These functions provide the offsets of DW_FORM_string |
|
1361 attributes in the section section_index. These information |
|
1362 will enable a producer app that is generating assembly |
|
1363 text output to easily emit those attributes in ascii form |
|
1364 without having to decode the byte stream. |
|
1365 */ |
|
1366 static int |
|
1367 string_attr_init (Dwarf_P_Debug dbg, |
|
1368 Dwarf_Signed section_index, |
|
1369 unsigned count) |
|
1370 { |
|
1371 Dwarf_P_Per_Sect_String_Attrs sect_sa = &dbg->de_sect_string_attr[section_index]; |
|
1372 |
|
1373 sect_sa->sect_sa_n_alloc = count; |
|
1374 sect_sa->sect_sa_list = NULL; |
|
1375 if (count > 0) { |
|
1376 sect_sa->sect_sa_section_number = section_index; |
|
1377 sect_sa->sect_sa_list = _dwarf_p_get_alloc(dbg, |
|
1378 sizeof(struct Dwarf_P_String_Attr_s) |
|
1379 * sect_sa->sect_sa_n_alloc); |
|
1380 if (sect_sa->sect_sa_list == NULL) { |
|
1381 sect_sa->sect_sa_n_alloc = 0; |
|
1382 return -1; |
|
1383 } |
|
1384 } |
|
1385 return 0; |
|
1386 } |
|
1387 |
|
1388 static int |
|
1389 string_attr_add (Dwarf_P_Debug dbg, |
|
1390 Dwarf_Signed section_index, |
|
1391 Dwarf_Unsigned offset, |
|
1392 Dwarf_P_Attribute attr) |
|
1393 { |
|
1394 Dwarf_P_Per_Sect_String_Attrs sect_sa = &dbg->de_sect_string_attr[section_index]; |
|
1395 if (sect_sa->sect_sa_n_alloc >= (sect_sa->sect_sa_n_used + 1)) { |
|
1396 unsigned n = sect_sa->sect_sa_n_used++; |
|
1397 sect_sa->sect_sa_list[n].sa_offset = offset; |
|
1398 sect_sa->sect_sa_list[n].sa_nbytes = attr->ar_nbytes; |
|
1399 return 0; |
|
1400 } |
|
1401 |
|
1402 return -1; |
|
1403 } |
|
1404 |
|
1405 int |
|
1406 dwarf_get_string_attributes_count(Dwarf_P_Debug dbg, |
|
1407 Dwarf_Unsigned * |
|
1408 count_of_sa_sections, |
|
1409 int *drd_buffer_version, |
|
1410 Dwarf_Error *error) |
|
1411 { |
|
1412 int i; |
|
1413 unsigned int count = 0; |
|
1414 |
|
1415 for (i = 0; i < NUM_DEBUG_SECTIONS; ++i) { |
|
1416 if (dbg->de_sect_string_attr[i].sect_sa_n_used > 0) { |
|
1417 ++count; |
|
1418 } |
|
1419 } |
|
1420 *count_of_sa_sections = (Dwarf_Unsigned) count; |
|
1421 *drd_buffer_version = DWARF_DRD_BUFFER_VERSION; |
|
1422 |
|
1423 return DW_DLV_OK; |
|
1424 } |
|
1425 |
|
1426 int |
|
1427 dwarf_get_string_attributes_info(Dwarf_P_Debug dbg, |
|
1428 Dwarf_Signed *elf_section_index, |
|
1429 Dwarf_Unsigned *sect_sa_buffer_count, |
|
1430 Dwarf_P_String_Attr *sect_sa_buffer, |
|
1431 Dwarf_Error *error) |
|
1432 { |
|
1433 int i; |
|
1434 int next = dbg->de_sect_sa_next_to_return; |
|
1435 |
|
1436 for (i = next; i < NUM_DEBUG_SECTIONS; ++i) { |
|
1437 Dwarf_P_Per_Sect_String_Attrs sect_sa = &dbg->de_sect_string_attr[i]; |
|
1438 if (sect_sa->sect_sa_n_used > 0) { |
|
1439 dbg->de_sect_sa_next_to_return = i + 1; |
|
1440 *elf_section_index = sect_sa->sect_sa_section_number; |
|
1441 *sect_sa_buffer_count = sect_sa->sect_sa_n_used; |
|
1442 *sect_sa_buffer = sect_sa->sect_sa_list; |
|
1443 return DW_DLV_OK; |
|
1444 } |
|
1445 } |
|
1446 return DW_DLV_NO_ENTRY; |
|
1447 } |
|
1448 |
|
1449 |
|
1450 |
|
1451 /*--------------------------------------------------------------- |
|
1452 Generate debug_info and debug_abbrev sections |
|
1453 ---------------------------------------------------------------*/ |
|
1454 static int |
|
1455 _dwarf_pro_generate_debuginfo(Dwarf_P_Debug dbg, Dwarf_Error * error) |
|
1456 { |
|
1457 int elfsectno_of_debug_info = 0; |
|
1458 int abbrevsectno = 0; |
|
1459 unsigned char *data = 0; |
|
1460 int cu_header_size = 0; |
|
1461 Dwarf_P_Abbrev curabbrev = 0; |
|
1462 Dwarf_P_Abbrev abbrev_head = 0; |
|
1463 Dwarf_P_Abbrev abbrev_tail = 0; |
|
1464 Dwarf_P_Die curdie = 0; |
|
1465 Dwarf_P_Die first_child = 0; |
|
1466 Dwarf_Word dw = 0; |
|
1467 Dwarf_Unsigned du = 0; |
|
1468 Dwarf_Half dh = 0; |
|
1469 Dwarf_Ubyte db = 0; |
|
1470 Dwarf_Half version = 0; /* Need 2 byte quantity. */ |
|
1471 Dwarf_Unsigned die_off = 0; /* Offset of die in debug_info. */ |
|
1472 int n_abbrevs = 0; |
|
1473 int res = 0; |
|
1474 unsigned marker_count = 0; |
|
1475 unsigned string_attr_count = 0; |
|
1476 unsigned string_attr_offset = 0; |
|
1477 |
|
1478 Dwarf_Small *start_info_sec = 0; |
|
1479 |
|
1480 int uwordb_size = dbg->de_offset_size; |
|
1481 int extension_size = dbg->de_64bit_extension ? 4 : 0; |
|
1482 |
|
1483 abbrev_head = abbrev_tail = NULL; |
|
1484 elfsectno_of_debug_info = dbg->de_elf_sects[DEBUG_INFO]; |
|
1485 |
|
1486 /* write cu header */ |
|
1487 cu_header_size = BEGIN_LEN_SIZE + sizeof(Dwarf_Half) + /* version |
|
1488 stamp |
|
1489 */ |
|
1490 uwordb_size + /* offset into abbrev table */ |
|
1491 sizeof(Dwarf_Ubyte); /* size of target address */ |
|
1492 GET_CHUNK(dbg, elfsectno_of_debug_info, data, cu_header_size, |
|
1493 error); |
|
1494 start_info_sec = data; |
|
1495 if (extension_size) { |
|
1496 du = DISTINGUISHED_VALUE; |
|
1497 WRITE_UNALIGNED(dbg, (void *) data, |
|
1498 (const void *) &du, sizeof(du), extension_size); |
|
1499 data += extension_size; |
|
1500 } |
|
1501 du = 0; /* length of debug_info, not counting |
|
1502 this field itself (unknown at this |
|
1503 point). */ |
|
1504 WRITE_UNALIGNED(dbg, (void *) data, |
|
1505 (const void *) &du, sizeof(du), uwordb_size); |
|
1506 data += uwordb_size; |
|
1507 |
|
1508 version = CURRENT_VERSION_STAMP; /* assume this length will not |
|
1509 change */ |
|
1510 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &version, |
|
1511 sizeof(version), sizeof(Dwarf_Half)); |
|
1512 data += sizeof(Dwarf_Half); |
|
1513 |
|
1514 du = 0; /* offset into abbrev table, not yet |
|
1515 known. */ |
|
1516 WRITE_UNALIGNED(dbg, (void *) data, |
|
1517 (const void *) &du, sizeof(du), uwordb_size); |
|
1518 data += uwordb_size; |
|
1519 |
|
1520 |
|
1521 db = dbg->de_pointer_size; |
|
1522 |
|
1523 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
1524 sizeof(db), 1); |
|
1525 |
|
1526 /* We have filled the chunk we got with GET_CHUNK. At this point we |
|
1527 no longer dare use "data" or "start_info_sec" as a pointer any |
|
1528 longer except to refer to that first small chunk for the cu |
|
1529 header. */ |
|
1530 |
|
1531 curdie = dbg->de_dies; |
|
1532 |
|
1533 /* create AT_macro_info if appropriate */ |
|
1534 if (dbg->de_first_macinfo != NULL) { |
|
1535 if (_dwarf_pro_add_AT_macro_info(dbg, curdie, 0, error) < 0) |
|
1536 return -1; |
|
1537 } |
|
1538 |
|
1539 /* create AT_stmt_list attribute if necessary */ |
|
1540 if (dwarf_need_debug_line_section(dbg) == TRUE) |
|
1541 if (_dwarf_pro_add_AT_stmt_list(dbg, curdie, error) < 0) |
|
1542 return -1; |
|
1543 |
|
1544 die_off = cu_header_size; |
|
1545 |
|
1546 /* |
|
1547 Relocation for abbrev offset in cu header store relocation |
|
1548 record in linked list */ |
|
1549 res = dbg->de_reloc_name(dbg, DEBUG_INFO, BEGIN_LEN_SIZE + |
|
1550 sizeof(Dwarf_Half), |
|
1551 /* r_offset */ |
|
1552 dbg->de_sect_name_idx[DEBUG_ABBREV], |
|
1553 dwarf_drt_data_reloc, uwordb_size); |
|
1554 if (res != DW_DLV_OK) { |
|
1555 DWARF_P_DBG_ERROR(dbg, DW_DLE_REL_ALLOC, -1); |
|
1556 } |
|
1557 |
|
1558 /* pass 0: only top level dies, add at_sibling attribute to those |
|
1559 dies with children */ |
|
1560 first_child = curdie->di_child; |
|
1561 while (first_child && first_child->di_right) { |
|
1562 if (first_child->di_child) |
|
1563 dwarf_add_AT_reference(dbg, |
|
1564 first_child, |
|
1565 DW_AT_sibling, |
|
1566 first_child->di_right, error); |
|
1567 first_child = first_child->di_right; |
|
1568 } |
|
1569 |
|
1570 /* pass 1: create abbrev info, get die offsets, calc relocations */ |
|
1571 marker_count = 0; |
|
1572 string_attr_count = 0; |
|
1573 while (curdie != NULL) { |
|
1574 int nbytes = 0; |
|
1575 Dwarf_P_Attribute curattr; |
|
1576 Dwarf_P_Attribute new_first_attr; |
|
1577 Dwarf_P_Attribute new_last_attr; |
|
1578 char *space = 0; |
|
1579 int res = 0; |
|
1580 char buff1[ENCODE_SPACE_NEEDED]; |
|
1581 int i = 0; |
|
1582 |
|
1583 curdie->di_offset = die_off; |
|
1584 |
|
1585 if (curdie->di_marker != 0) |
|
1586 marker_count++; |
|
1587 |
|
1588 curabbrev = _dwarf_pro_getabbrev(curdie, abbrev_head); |
|
1589 if (curabbrev == NULL) { |
|
1590 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1591 } |
|
1592 if (abbrev_head == NULL) { |
|
1593 n_abbrevs = 1; |
|
1594 curabbrev->abb_idx = n_abbrevs; |
|
1595 abbrev_tail = abbrev_head = curabbrev; |
|
1596 } else { |
|
1597 /* check if its a new abbreviation, if yes, add to tail */ |
|
1598 if (curabbrev->abb_idx == 0) { |
|
1599 n_abbrevs++; |
|
1600 curabbrev->abb_idx = n_abbrevs; |
|
1601 abbrev_tail->abb_next = curabbrev; |
|
1602 abbrev_tail = curabbrev; |
|
1603 } |
|
1604 } |
|
1605 res = _dwarf_pro_encode_leb128_nm(curabbrev->abb_idx, |
|
1606 &nbytes, |
|
1607 buff1, sizeof(buff1)); |
|
1608 if (res != DW_DLV_OK) { |
|
1609 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1610 } |
|
1611 space = _dwarf_p_get_alloc(dbg, nbytes); |
|
1612 if (space == NULL) { |
|
1613 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1614 } |
|
1615 memcpy(space, buff1, nbytes); |
|
1616 curdie->di_abbrev = space; |
|
1617 curdie->di_abbrev_nbytes = nbytes; |
|
1618 die_off += nbytes; |
|
1619 |
|
1620 /* Resorting the attributes!! */ |
|
1621 new_first_attr = new_last_attr = NULL; |
|
1622 curattr = curdie->di_attrs; |
|
1623 for (i = 0; i < (int)curabbrev->abb_n_attr; i++) { |
|
1624 Dwarf_P_Attribute ca; |
|
1625 Dwarf_P_Attribute cl; |
|
1626 |
|
1627 /* The following should always find an attribute! */ |
|
1628 for (ca = cl = curattr; |
|
1629 ca && curabbrev->abb_attrs[i] != ca->ar_attribute; |
|
1630 cl = ca, ca = ca->ar_next) |
|
1631 { |
|
1632 } |
|
1633 |
|
1634 if (!ca) { |
|
1635 DWARF_P_DBG_ERROR(dbg,DW_DLE_ABBREV_ALLOC, -1); |
|
1636 } |
|
1637 |
|
1638 /* Remove the attribute from the old list. */ |
|
1639 if (ca == curattr) { |
|
1640 curattr = ca->ar_next; |
|
1641 } else { |
|
1642 cl->ar_next = ca->ar_next; |
|
1643 } |
|
1644 |
|
1645 ca->ar_next = NULL; |
|
1646 |
|
1647 /* Add the attribute to the new list. */ |
|
1648 if (new_first_attr == NULL) { |
|
1649 new_first_attr = new_last_attr = ca; |
|
1650 } else { |
|
1651 new_last_attr->ar_next = ca; |
|
1652 new_last_attr = ca; |
|
1653 } |
|
1654 } |
|
1655 |
|
1656 curdie->di_attrs = new_first_attr; |
|
1657 |
|
1658 curattr = curdie->di_attrs; |
|
1659 |
|
1660 while (curattr) { |
|
1661 if (curattr->ar_rel_type != R_MIPS_NONE) { |
|
1662 switch (curattr->ar_attribute) { |
|
1663 case DW_AT_stmt_list: |
|
1664 curattr->ar_rel_symidx = |
|
1665 dbg->de_sect_name_idx[DEBUG_LINE]; |
|
1666 break; |
|
1667 case DW_AT_MIPS_fde: |
|
1668 curattr->ar_rel_symidx = |
|
1669 dbg->de_sect_name_idx[DEBUG_FRAME]; |
|
1670 break; |
|
1671 case DW_AT_macro_info: |
|
1672 curattr->ar_rel_symidx = |
|
1673 dbg->de_sect_name_idx[DEBUG_MACINFO]; |
|
1674 break; |
|
1675 default: |
|
1676 break; |
|
1677 } |
|
1678 res = dbg->de_reloc_name(dbg, DEBUG_INFO, die_off + curattr->ar_rel_offset, /* r_offset |
|
1679 */ |
|
1680 curattr->ar_rel_symidx, |
|
1681 dwarf_drt_data_reloc, |
|
1682 curattr->ar_reloc_len); |
|
1683 |
|
1684 if (res != DW_DLV_OK) { |
|
1685 DWARF_P_DBG_ERROR(dbg, DW_DLE_REL_ALLOC, -1); |
|
1686 } |
|
1687 |
|
1688 } |
|
1689 if (curattr->ar_attribute_form == DW_FORM_string) { |
|
1690 string_attr_count++; |
|
1691 } |
|
1692 die_off += curattr->ar_nbytes; |
|
1693 curattr = curattr->ar_next; |
|
1694 } |
|
1695 |
|
1696 /* depth first search */ |
|
1697 if (curdie->di_child) |
|
1698 curdie = curdie->di_child; |
|
1699 else { |
|
1700 while (curdie != NULL && curdie->di_right == NULL) { |
|
1701 curdie = curdie->di_parent; |
|
1702 die_off++; /* since we are writing a null die at |
|
1703 the end of each sibling chain */ |
|
1704 } |
|
1705 if (curdie != NULL) |
|
1706 curdie = curdie->di_right; |
|
1707 } |
|
1708 |
|
1709 } /* end while (curdie != NULL) */ |
|
1710 |
|
1711 res = marker_init(dbg, marker_count); |
|
1712 if (res == -1) { |
|
1713 DWARF_P_DBG_ERROR(dbg, DW_DLE_REL_ALLOC, -1); |
|
1714 } |
|
1715 res = string_attr_init(dbg, DEBUG_INFO, string_attr_count); |
|
1716 if (res == -1) { |
|
1717 DWARF_P_DBG_ERROR(dbg, DW_DLE_REL_ALLOC, -1); |
|
1718 } |
|
1719 |
|
1720 /* Pass 2: Write out the die information Here 'data' is a |
|
1721 temporary, one block for each GET_CHUNK. 'data' is overused. */ |
|
1722 curdie = dbg->de_dies; |
|
1723 while (curdie != NULL) { |
|
1724 Dwarf_P_Attribute curattr; |
|
1725 |
|
1726 if (curdie->di_marker != 0) { |
|
1727 res = marker_add(dbg, curdie->di_offset, curdie->di_marker); |
|
1728 if (res == -1) { |
|
1729 DWARF_P_DBG_ERROR(dbg, DW_DLE_REL_ALLOC, -1); |
|
1730 } |
|
1731 } |
|
1732 |
|
1733 /* index to abbreviation table */ |
|
1734 GET_CHUNK(dbg, elfsectno_of_debug_info, |
|
1735 data, curdie->di_abbrev_nbytes, error); |
|
1736 |
|
1737 memcpy((void *) data, |
|
1738 (const void *) curdie->di_abbrev, |
|
1739 curdie->di_abbrev_nbytes); |
|
1740 |
|
1741 /* Attribute values - need to fill in all form attributes */ |
|
1742 curattr = curdie->di_attrs; |
|
1743 string_attr_offset = curdie->di_offset + curdie->di_abbrev_nbytes; |
|
1744 |
|
1745 while (curattr) { |
|
1746 GET_CHUNK(dbg, elfsectno_of_debug_info, data, |
|
1747 (unsigned long) curattr->ar_nbytes, error); |
|
1748 switch (curattr->ar_attribute_form) { |
|
1749 case DW_FORM_ref1: |
|
1750 { |
|
1751 if (curattr->ar_ref_die->di_offset > |
|
1752 (unsigned) 0xff) { |
|
1753 DWARF_P_DBG_ERROR(dbg, DW_DLE_OFFSET_UFLW, -1); |
|
1754 } |
|
1755 db = curattr->ar_ref_die->di_offset; |
|
1756 WRITE_UNALIGNED(dbg, (void *) data, |
|
1757 (const void *) &db, |
|
1758 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
1759 break; |
|
1760 } |
|
1761 case DW_FORM_ref2: |
|
1762 { |
|
1763 if (curattr->ar_ref_die->di_offset > |
|
1764 (unsigned) 0xffff) { |
|
1765 DWARF_P_DBG_ERROR(dbg, DW_DLE_OFFSET_UFLW, -1); |
|
1766 } |
|
1767 dh = curattr->ar_ref_die->di_offset; |
|
1768 WRITE_UNALIGNED(dbg, (void *) data, |
|
1769 (const void *) &dh, |
|
1770 sizeof(dh), sizeof(Dwarf_Half)); |
|
1771 break; |
|
1772 } |
|
1773 case DW_FORM_ref_addr: |
|
1774 { |
|
1775 /* curattr->ar_ref_die == NULL! |
|
1776 * |
|
1777 * ref_addr doesn't take a CU-offset. |
|
1778 * This is different than other refs. |
|
1779 * This value will be set by the user of the |
|
1780 * producer library using a relocation. |
|
1781 * No need to set a value here. |
|
1782 */ |
|
1783 #if 0 |
|
1784 du = curattr->ar_ref_die->di_offset; |
|
1785 { |
|
1786 /* ref to offset of die */ |
|
1787 WRITE_UNALIGNED(dbg, (void *) data, |
|
1788 (const void *) &du, |
|
1789 sizeof(du), uwordb_size); |
|
1790 } |
|
1791 #endif |
|
1792 break; |
|
1793 |
|
1794 } |
|
1795 case DW_FORM_ref4: |
|
1796 { |
|
1797 if (curattr->ar_ref_die->di_offset > |
|
1798 (unsigned) 0xffffffff) { |
|
1799 DWARF_P_DBG_ERROR(dbg, DW_DLE_OFFSET_UFLW, -1); |
|
1800 } |
|
1801 dw = (Dwarf_Word) curattr->ar_ref_die->di_offset; |
|
1802 WRITE_UNALIGNED(dbg, (void *) data, |
|
1803 (const void *) &dw, |
|
1804 sizeof(dw), sizeof(Dwarf_ufixed)); |
|
1805 break; |
|
1806 } |
|
1807 case DW_FORM_ref8: |
|
1808 du = curattr->ar_ref_die->di_offset; |
|
1809 WRITE_UNALIGNED(dbg, (void *) data, |
|
1810 (const void *) &du, |
|
1811 sizeof(du), sizeof(Dwarf_Unsigned)); |
|
1812 break; |
|
1813 case DW_FORM_ref_udata: |
|
1814 { /* unsigned leb128 offset */ |
|
1815 |
|
1816 int nbytes; |
|
1817 char buff1[ENCODE_SPACE_NEEDED]; |
|
1818 |
|
1819 res = |
|
1820 _dwarf_pro_encode_leb128_nm(curattr-> |
|
1821 ar_ref_die-> |
|
1822 di_offset, &nbytes, |
|
1823 buff1, |
|
1824 sizeof(buff1)); |
|
1825 if (res != DW_DLV_OK) { |
|
1826 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1827 } |
|
1828 |
|
1829 memcpy(data, buff1, nbytes); |
|
1830 break; |
|
1831 } |
|
1832 default: |
|
1833 memcpy((void *) data, |
|
1834 (const void *) curattr->ar_data, |
|
1835 curattr->ar_nbytes); |
|
1836 break; |
|
1837 } |
|
1838 if (curattr->ar_attribute_form == DW_FORM_string) { |
|
1839 string_attr_add(dbg, DEBUG_INFO, string_attr_offset, curattr); |
|
1840 } |
|
1841 string_attr_offset += curattr->ar_nbytes; |
|
1842 curattr = curattr->ar_next; |
|
1843 } |
|
1844 |
|
1845 /* depth first search */ |
|
1846 if (curdie->di_child) |
|
1847 curdie = curdie->di_child; |
|
1848 else { |
|
1849 while (curdie != NULL && curdie->di_right == NULL) { |
|
1850 GET_CHUNK(dbg, elfsectno_of_debug_info, data, 1, error); |
|
1851 *data = '\0'; |
|
1852 curdie = curdie->di_parent; |
|
1853 } |
|
1854 if (curdie != NULL) |
|
1855 curdie = curdie->di_right; |
|
1856 } |
|
1857 } /* end while (curdir != NULL) */ |
|
1858 |
|
1859 /* Write out debug_info size */ |
|
1860 /* Dont include length field or extension bytes */ |
|
1861 du = die_off - BEGIN_LEN_SIZE; |
|
1862 WRITE_UNALIGNED(dbg, (void *) (start_info_sec + extension_size), |
|
1863 (const void *) &du, sizeof(du), uwordb_size); |
|
1864 |
|
1865 |
|
1866 data = 0; /* Emphasise not usable now */ |
|
1867 |
|
1868 /* Write out debug_abbrev section */ |
|
1869 abbrevsectno = dbg->de_elf_sects[DEBUG_ABBREV]; |
|
1870 |
|
1871 curabbrev = abbrev_head; |
|
1872 while (curabbrev) { |
|
1873 char *val; |
|
1874 int nbytes; |
|
1875 int idx; |
|
1876 int res; |
|
1877 char buff1[ENCODE_SPACE_NEEDED]; |
|
1878 |
|
1879 res = _dwarf_pro_encode_leb128_nm(curabbrev->abb_idx, &nbytes, |
|
1880 buff1, sizeof(buff1)); |
|
1881 if (res != DW_DLV_OK) { |
|
1882 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1883 } |
|
1884 |
|
1885 GET_CHUNK(dbg, abbrevsectno, data, nbytes, error); |
|
1886 val = buff1; |
|
1887 memcpy((void *) data, (const void *) val, nbytes); |
|
1888 res = _dwarf_pro_encode_leb128_nm(curabbrev->abb_tag, &nbytes, |
|
1889 buff1, sizeof(buff1)); |
|
1890 if (res != DW_DLV_OK) { |
|
1891 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1892 } |
|
1893 val = buff1; |
|
1894 GET_CHUNK(dbg, abbrevsectno, data, nbytes, error); |
|
1895 memcpy((void *) data, (const void *) val, nbytes); |
|
1896 db = curabbrev->abb_children; |
|
1897 GET_CHUNK(dbg, abbrevsectno, data, sizeof(Dwarf_Ubyte), error); |
|
1898 WRITE_UNALIGNED(dbg, (void *) data, (const void *) &db, |
|
1899 sizeof(db), sizeof(Dwarf_Ubyte)); |
|
1900 |
|
1901 /* add attributes and forms */ |
|
1902 for (idx = 0; idx < curabbrev->abb_n_attr; idx++) { |
|
1903 res = _dwarf_pro_encode_leb128_nm(curabbrev->abb_attrs[idx], |
|
1904 &nbytes, |
|
1905 buff1, sizeof(buff1)); |
|
1906 if (res != DW_DLV_OK) { |
|
1907 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1908 } |
|
1909 val = buff1; |
|
1910 GET_CHUNK(dbg, abbrevsectno, data, nbytes, error); |
|
1911 memcpy((void *) data, (const void *) val, nbytes); |
|
1912 res = _dwarf_pro_encode_leb128_nm(curabbrev->abb_forms[idx], |
|
1913 &nbytes, |
|
1914 buff1, sizeof(buff1)); |
|
1915 if (res != DW_DLV_OK) { |
|
1916 DWARF_P_DBG_ERROR(dbg, DW_DLE_ABBREV_ALLOC, -1); |
|
1917 } |
|
1918 val = buff1; |
|
1919 GET_CHUNK(dbg, abbrevsectno, data, nbytes, error); |
|
1920 memcpy((void *) data, (const void *) val, nbytes); |
|
1921 } |
|
1922 GET_CHUNK(dbg, abbrevsectno, data, 2, error); /* two zeros, |
|
1923 for last |
|
1924 entry, see |
|
1925 dwarf2 sec |
|
1926 7.5.3 */ |
|
1927 *data = 0; |
|
1928 data++; |
|
1929 *data = 0; |
|
1930 |
|
1931 curabbrev = curabbrev->abb_next; |
|
1932 } |
|
1933 |
|
1934 GET_CHUNK(dbg, abbrevsectno, data, 1, error); /* one zero, |
|
1935 for end of |
|
1936 cu, see |
|
1937 dwarf2 sec |
|
1938 7.5.3 */ |
|
1939 *data = 0; |
|
1940 |
|
1941 |
|
1942 return (int) dbg->de_n_debug_sect; |
|
1943 } |
|
1944 |
|
1945 |
|
1946 /*--------------------------------------------------------------------- |
|
1947 Get a buffer of section data. |
|
1948 section_idx is the elf-section number that this data applies to. |
|
1949 length shows length of returned data |
|
1950 ----------------------------------------------------------------------*/ |
|
1951 /*ARGSUSED*/ /* pretend all args used */ |
|
1952 Dwarf_Ptr |
|
1953 dwarf_get_section_bytes(Dwarf_P_Debug dbg, |
|
1954 Dwarf_Signed dwarf_section, |
|
1955 Dwarf_Signed * section_idx, |
|
1956 Dwarf_Unsigned * length, Dwarf_Error * error) |
|
1957 { |
|
1958 Dwarf_Ptr buf; |
|
1959 |
|
1960 if (dbg->de_version_magic_number != PRO_VERSION_MAGIC) { |
|
1961 DWARF_P_DBG_ERROR(dbg, DW_DLE_IA, NULL); |
|
1962 } |
|
1963 |
|
1964 if (dbg->de_debug_sects == 0) { |
|
1965 /* no more data !! */ |
|
1966 return NULL; |
|
1967 } |
|
1968 if (dbg->de_debug_sects->ds_elf_sect_no == MAGIC_SECT_NO) { |
|
1969 /* no data ever entered !! */ |
|
1970 return NULL; |
|
1971 } |
|
1972 *section_idx = dbg->de_debug_sects->ds_elf_sect_no; |
|
1973 *length = dbg->de_debug_sects->ds_nbytes; |
|
1974 |
|
1975 buf = (Dwarf_Ptr *) dbg->de_debug_sects->ds_data; |
|
1976 |
|
1977 dbg->de_debug_sects = dbg->de_debug_sects->ds_next; |
|
1978 |
|
1979 /* We may want to call the section stuff more than once: see |
|
1980 dwarf_reset_section_bytes() do not do: dbg->de_n_debug_sect--; */ |
|
1981 |
|
1982 return buf; |
|
1983 } |
|
1984 |
|
1985 /* |
|
1986 No errors possible. |
|
1987 */ |
|
1988 void |
|
1989 dwarf_reset_section_bytes(Dwarf_P_Debug dbg) |
|
1990 { |
|
1991 dbg->de_debug_sects = dbg->de_first_debug_sect; |
|
1992 /* No need to reset; commented out decrement. dbg->de_n_debug_sect |
|
1993 = ???; */ |
|
1994 dbg->de_reloc_next_to_return = 0; |
|
1995 dbg->de_sect_sa_next_to_return = 0; |
|
1996 } |
|
1997 |
|
1998 /* |
|
1999 Storage handler. Gets either a new chunk of memory, or |
|
2000 a pointer in existing memory, from the linked list attached |
|
2001 to dbg at de_debug_sects, depending on size of nbytes |
|
2002 |
|
2003 Assume dbg not null, checked in top level routine |
|
2004 |
|
2005 Returns a pointer to the allocated buffer space for the |
|
2006 lib to fill in, predincrements next-to-use count so the |
|
2007 space requested is already counted 'used' |
|
2008 when this returns (ie, reserved). |
|
2009 |
|
2010 */ |
|
2011 Dwarf_Small * |
|
2012 _dwarf_pro_buffer(Dwarf_P_Debug dbg, |
|
2013 int elfsectno, unsigned long nbytes) |
|
2014 { |
|
2015 Dwarf_P_Section_Data cursect; |
|
2016 |
|
2017 |
|
2018 cursect = dbg->de_current_active_section; |
|
2019 /* By using MAGIC_SECT_NO we allow the following MAGIC_SECT_NO must |
|
2020 not match any legit section number. test to have just two |
|
2021 clauses (no NULL pointer test) See dwarf_producer_init(). */ |
|
2022 if ((cursect->ds_elf_sect_no != elfsectno) || |
|
2023 ((cursect->ds_nbytes + nbytes) > cursect->ds_orig_alloc) |
|
2024 ) { |
|
2025 |
|
2026 /* Either the elf section has changed or there is not enough |
|
2027 space in the current section. |
|
2028 |
|
2029 Create a new Dwarf_P_Section_Data_s for the chunk. and have |
|
2030 space 'on the end' for the buffer itself so we just do one |
|
2031 malloc (not two). |
|
2032 |
|
2033 */ |
|
2034 unsigned long space = nbytes; |
|
2035 |
|
2036 if (nbytes < CHUNK_SIZE) |
|
2037 space = CHUNK_SIZE; |
|
2038 |
|
2039 cursect = (Dwarf_P_Section_Data) |
|
2040 _dwarf_p_get_alloc(dbg, |
|
2041 sizeof(struct Dwarf_P_Section_Data_s) |
|
2042 + space); |
|
2043 |
|
2044 |
|
2045 if (cursect == NULL) |
|
2046 return (NULL); |
|
2047 |
|
2048 /* _dwarf_p_get_alloc zeroes the space... */ |
|
2049 |
|
2050 cursect->ds_data = (char *) cursect + |
|
2051 sizeof(struct Dwarf_P_Section_Data_s); |
|
2052 cursect->ds_orig_alloc = space; |
|
2053 cursect->ds_elf_sect_no = elfsectno; |
|
2054 cursect->ds_nbytes = nbytes; /* reserve this number of bytes |
|
2055 of space for caller to fill |
|
2056 in */ |
|
2057 |
|
2058 /* Now link on the end of the list, and mark this one as the |
|
2059 current one */ |
|
2060 |
|
2061 if (dbg->de_debug_sects->ds_elf_sect_no == MAGIC_SECT_NO) { |
|
2062 /* the only entry is the special one for 'no entry' so |
|
2063 delete that phony one while adding this initial real |
|
2064 one. */ |
|
2065 dbg->de_debug_sects = cursect; |
|
2066 dbg->de_current_active_section = cursect; |
|
2067 dbg->de_first_debug_sect = cursect; |
|
2068 } else { |
|
2069 dbg->de_current_active_section->ds_next = cursect; |
|
2070 dbg->de_current_active_section = cursect; |
|
2071 } |
|
2072 dbg->de_n_debug_sect++; |
|
2073 |
|
2074 return ((Dwarf_Small *) cursect->ds_data); |
|
2075 } |
|
2076 |
|
2077 /* There is enough space in the current buffer */ |
|
2078 { |
|
2079 Dwarf_Small *space_for_caller = (Dwarf_Small *) |
|
2080 (cursect->ds_data + cursect->ds_nbytes); |
|
2081 |
|
2082 cursect->ds_nbytes += nbytes; |
|
2083 return space_for_caller; |
|
2084 } |
|
2085 } |
|
2086 |
|
2087 |
|
2088 /*------------------------------------------------------------ |
|
2089 Given address advance and line advance, it gives |
|
2090 either special opcode, or a number < 0 |
|
2091 ------------------------------------------------------------*/ |
|
2092 static int |
|
2093 _dwarf_pro_get_opc(Dwarf_Unsigned addr_adv, int line_adv) |
|
2094 { |
|
2095 int opc; |
|
2096 |
|
2097 addr_adv = addr_adv / MIN_INST_LENGTH; |
|
2098 if (line_adv == 0 && addr_adv == 0) |
|
2099 return OPC_INCS_ZERO; |
|
2100 if (line_adv >= LINE_BASE && line_adv < LINE_BASE + LINE_RANGE) { |
|
2101 opc = |
|
2102 (line_adv - LINE_BASE) + (addr_adv * LINE_RANGE) + |
|
2103 OPCODE_BASE; |
|
2104 if (opc > 255) |
|
2105 return OPC_OUT_OF_RANGE; |
|
2106 return opc; |
|
2107 } else |
|
2108 return LINE_OUT_OF_RANGE; |
|
2109 } |
|
2110 |
|
2111 /*----------------------------------------------------------------------- |
|
2112 Handles abbreviations. It takes a die, searches through |
|
2113 current list of abbreviations for matching one. If it |
|
2114 finds one, it returns a pointer to it, and if it doesnt, |
|
2115 it returns a new one. Upto the user of this function to |
|
2116 link it up to the abbreviation head. If its a new one, |
|
2117 abb_idx has 0. |
|
2118 -----------------------------------------------------------------------*/ |
|
2119 static Dwarf_P_Abbrev |
|
2120 _dwarf_pro_getabbrev(Dwarf_P_Die die, Dwarf_P_Abbrev head) |
|
2121 { |
|
2122 Dwarf_P_Abbrev curabbrev; |
|
2123 Dwarf_P_Attribute curattr; |
|
2124 int res1; |
|
2125 int nattrs; |
|
2126 int match; |
|
2127 Dwarf_ufixed *forms = 0; |
|
2128 Dwarf_ufixed *attrs = 0; |
|
2129 |
|
2130 curabbrev = head; |
|
2131 while (curabbrev) { |
|
2132 if ((die->di_tag == curabbrev->abb_tag) && |
|
2133 ((die->di_child != NULL && |
|
2134 curabbrev->abb_children == DW_CHILDREN_yes) || |
|
2135 (die->di_child == NULL && |
|
2136 curabbrev->abb_children == DW_CHILDREN_no)) && |
|
2137 (die->di_n_attr == curabbrev->abb_n_attr)) { |
|
2138 |
|
2139 /* There is a chance of a match. */ |
|
2140 curattr = die->di_attrs; |
|
2141 match = 1; /* Assume match found. */ |
|
2142 while (match && curattr) { |
|
2143 res1 = _dwarf_pro_match_attr(curattr, |
|
2144 curabbrev, |
|
2145 (int) curabbrev-> |
|
2146 abb_n_attr); |
|
2147 if (res1 == 0) |
|
2148 match = 0; |
|
2149 curattr = curattr->ar_next; |
|
2150 } |
|
2151 if (match == 1) |
|
2152 return curabbrev; |
|
2153 } |
|
2154 curabbrev = curabbrev->abb_next; |
|
2155 } |
|
2156 |
|
2157 /* no match, create new abbreviation */ |
|
2158 if (die->di_n_attr != 0) { |
|
2159 forms = (Dwarf_ufixed *) |
|
2160 _dwarf_p_get_alloc(die->di_dbg, |
|
2161 sizeof(Dwarf_ufixed) * die->di_n_attr); |
|
2162 if (forms == NULL) |
|
2163 return NULL; |
|
2164 attrs = (Dwarf_ufixed *) |
|
2165 _dwarf_p_get_alloc(die->di_dbg, |
|
2166 sizeof(Dwarf_ufixed) * die->di_n_attr); |
|
2167 if (attrs == NULL) |
|
2168 return NULL; |
|
2169 } |
|
2170 nattrs = 0; |
|
2171 curattr = die->di_attrs; |
|
2172 while (curattr) { |
|
2173 attrs[nattrs] = curattr->ar_attribute; |
|
2174 forms[nattrs] = curattr->ar_attribute_form; |
|
2175 nattrs++; |
|
2176 curattr = curattr->ar_next; |
|
2177 } |
|
2178 |
|
2179 curabbrev = (Dwarf_P_Abbrev) |
|
2180 _dwarf_p_get_alloc(die->di_dbg, sizeof(struct Dwarf_P_Abbrev_s)); |
|
2181 if (curabbrev == NULL) |
|
2182 return NULL; |
|
2183 |
|
2184 if (die->di_child == NULL) |
|
2185 curabbrev->abb_children = DW_CHILDREN_no; |
|
2186 else |
|
2187 curabbrev->abb_children = DW_CHILDREN_yes; |
|
2188 curabbrev->abb_tag = die->di_tag; |
|
2189 curabbrev->abb_attrs = attrs; |
|
2190 curabbrev->abb_forms = forms; |
|
2191 curabbrev->abb_n_attr = die->di_n_attr; |
|
2192 curabbrev->abb_idx = 0; |
|
2193 curabbrev->abb_next = NULL; |
|
2194 |
|
2195 return curabbrev; |
|
2196 } |
|
2197 |
|
2198 /*------------------------------------------------------------------ |
|
2199 Tries to see if given attribute and form combination |
|
2200 exists in the given abbreviation |
|
2201 -------------------------------------------------------------------*/ |
|
2202 static int |
|
2203 _dwarf_pro_match_attr(Dwarf_P_Attribute attr, |
|
2204 Dwarf_P_Abbrev abbrev, int no_attr) |
|
2205 { |
|
2206 int i; |
|
2207 int found = 0; |
|
2208 |
|
2209 for (i = 0; i < no_attr; i++) { |
|
2210 if (attr->ar_attribute == abbrev->abb_attrs[i] && |
|
2211 attr->ar_attribute_form == abbrev->abb_forms[i]) { |
|
2212 found = 1; |
|
2213 break; |
|
2214 } |
|
2215 } |
|
2216 return found; |
|
2217 } |