author | Martin Trojer <martin.trojer@nokia.com> |
Fri, 15 Jan 2010 09:07:44 +0000 | |
changeset 34 | 92d87f2e53c2 |
permissions | -rwxr-xr-x |
34
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1 |
/* |
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2 |
|
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3 |
Copyright (C) 2000,2002,2003,2004,2005 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 |
|
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6 |
This program is free software; you can redistribute it and/or modify it |
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7 |
under the terms of version 2.1 of the GNU Lesser General Public License |
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8 |
as published by the Free Software Foundation. |
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9 |
|
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10 |
This program is distributed in the hope that it would be useful, but |
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11 |
WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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13 |
|
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Further, this software is distributed without any warranty that it is |
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15 |
free of the rightful claim of any third person regarding infringement |
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16 |
or the like. Any license provided herein, whether implied or |
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17 |
otherwise, applies only to this software file. Patent licenses, if |
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18 |
any, provided herein do not apply to combinations of this program with |
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19 |
other software, or any other product whatsoever. |
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20 |
|
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You should have received a copy of the GNU Lesser General Public |
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22 |
License along with this program; if not, write the Free Software |
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23 |
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, |
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USA. |
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|
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Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, |
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27 |
Mountain View, CA 94043, or: |
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|
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http://www.sgi.com |
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|
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For further information regarding this notice, see: |
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http://oss.sgi.com/projects/GenInfo/NoticeExplan |
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*/ |
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/* The versions applicable by section are: |
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DWARF2 DWARF3 DWARF4 |
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.debug_info 2 3 4 |
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.debug_abbrev - - - |
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.debug_frame 1 3 3 |
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.debug_str - - - |
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.debug_loc - - - |
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.debug_line 2 3 3 |
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.debug_aranges 2 2 2 |
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.debug_ranges x - - |
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.debug_pubtypes x 2 2 |
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.debug_pubnames 2 2 2 |
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.debug_macinfo - - - |
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*/ |
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#include <stddef.h> |
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struct Dwarf_Die_s { |
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/* |
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Points to the start of the portion corresponding to this Die in |
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the .debug_info section. */ |
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Dwarf_Byte_Ptr di_debug_info_ptr; |
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Dwarf_Abbrev_List di_abbrev_list; |
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/* Points to cu context for this die. */ |
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Dwarf_CU_Context di_cu_context; |
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}; |
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struct Dwarf_Attribute_s { |
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Dwarf_Half ar_attribute; /* Attribute Value. */ |
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Dwarf_Half ar_attribute_form; /* Attribute Form. */ |
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Dwarf_Half ar_attribute_form_direct; |
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/* Identical to ar_attribute_form except that if |
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the original form uleb was DW_FORM_indirect, |
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ar_attribute_form_direct contains DW_FORM_indirect |
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but ar_attribute_form contains the true form. */ |
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Dwarf_CU_Context ar_cu_context; |
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Dwarf_Small *ar_debug_info_ptr; |
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Dwarf_Attribute ar_next; |
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}; |
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/* |
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This structure provides the context for a compilation unit. |
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Thus, it contains the Dwarf_Debug, cc_dbg, that this cu |
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belongs to. It contains the information in the compilation |
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unit header, cc_length, cc_version_stamp, cc_abbrev_offset, |
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and cc_address_size, in the .debug_info section for that cu. |
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In addition, it contains the count, cc_count_cu, of the cu |
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number of that cu in the list of cu's in the .debug_info. |
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The count starts at 1, ie cc_count_cu is 1 for the first cu, |
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2 for the second and so on. This struct also contains a |
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pointer, cc_abbrev_table, to a list of pairs of abbrev code |
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and a pointer to the start of that abbrev |
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in the .debug_abbrev section. |
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Each die will also contain a pointer to such a struct to |
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record the context for that die. |
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|
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**Updated by dwarf_next_cu_header in dwarf_die_deliv.c |
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*/ |
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struct Dwarf_CU_Context_s { |
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Dwarf_Debug cc_dbg; |
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Dwarf_Word cc_length; |
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Dwarf_Small cc_length_size; |
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Dwarf_Small cc_extension_size; |
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Dwarf_Half cc_version_stamp; |
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Dwarf_Sword cc_abbrev_offset; |
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Dwarf_Small cc_address_size; |
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Dwarf_Word cc_debug_info_offset; |
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Dwarf_Byte_Ptr cc_last_abbrev_ptr; |
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Dwarf_Hash_Table cc_abbrev_hash_table; |
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Dwarf_CU_Context cc_next; |
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unsigned char cc_offset_length; |
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112 |
}; |
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struct Dwarf_Debug_s { |
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dwarf_elf_handle de_elf; /* see de_elf_must_close at end of struct */ |
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117 |
|
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118 |
Dwarf_Unsigned de_access; |
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119 |
Dwarf_Handler de_errhand; |
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120 |
Dwarf_Ptr de_errarg; |
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121 |
|
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122 |
/* |
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123 |
Context for the compilation_unit just read by a call to |
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124 |
dwarf_next_cu_header. **Updated by dwarf_next_cu_header in |
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125 |
dwarf_die_deliv.c */ |
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126 |
Dwarf_CU_Context de_cu_context; |
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127 |
|
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128 |
/* |
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129 |
Points to linked list of CU Contexts for the CU's already read. |
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130 |
These are only CU's read by dwarf_next_cu_header(). */ |
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131 |
Dwarf_CU_Context de_cu_context_list; |
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132 |
|
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133 |
/* |
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134 |
Points to the last CU Context added to the list by |
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135 |
dwarf_next_cu_header(). */ |
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136 |
Dwarf_CU_Context de_cu_context_list_end; |
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137 |
|
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138 |
/* |
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139 |
This is the list of CU contexts read for dwarf_offdie(). These |
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140 |
may read ahead of dwarf_next_cu_header(). */ |
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141 |
Dwarf_CU_Context de_offdie_cu_context; |
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142 |
Dwarf_CU_Context de_offdie_cu_context_end; |
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143 |
|
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144 |
/* Offset of last byte of last CU read. */ |
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145 |
Dwarf_Word de_info_last_offset; |
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146 |
|
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147 |
/* |
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148 |
Number of bytes in the length, and offset field in various |
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149 |
.debug_* sections. It's not very meaningful, and is |
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150 |
only used in one 'approximate' calculation. */ |
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151 |
Dwarf_Small de_length_size; |
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152 |
|
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153 |
/* number of bytes in a pointer of the target in various .debug_ |
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154 |
sections. 4 in 32bit, 8 in MIPS 64, ia64. */ |
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155 |
Dwarf_Small de_pointer_size; |
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156 |
|
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157 |
/* set at creation of a Dwarf_Debug to say if form_string should be |
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158 |
checked for valid length at every call. 0 means do the check. |
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159 |
non-zero means do not do the check. */ |
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160 |
Dwarf_Small de_assume_string_in_bounds; |
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161 |
|
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162 |
/* |
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|
163 |
Dwarf_Alloc_Hdr_s structs used to manage chunks that are |
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164 |
malloc'ed for each allocation type for structs. */ |
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165 |
struct Dwarf_Alloc_Hdr_s de_alloc_hdr[ALLOC_AREA_REAL_TABLE_MAX]; |
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166 |
#ifdef DWARF_SIMPLE_MALLOC |
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167 |
struct simple_malloc_record_s * de_simple_malloc_base; |
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168 |
#endif |
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169 |
|
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170 |
|
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171 |
/* |
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172 |
These fields are used to process debug_frame section. **Updated |
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173 |
by dwarf_get_fde_list in dwarf_frame.h */ |
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174 |
/* |
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175 |
Points to contiguous block of pointers to Dwarf_Cie_s structs. */ |
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176 |
Dwarf_Cie *de_cie_data; |
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177 |
/* Count of number of Dwarf_Cie_s structs. */ |
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178 |
Dwarf_Signed de_cie_count; |
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179 |
/* |
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180 |
Points to contiguous block of pointers to Dwarf_Fde_s structs. */ |
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181 |
Dwarf_Fde *de_fde_data; |
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|
182 |
/* Count of number of Dwarf_Fde_s structs. */ |
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183 |
Dwarf_Signed de_fde_count; |
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|
184 |
|
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|
185 |
Dwarf_Small *de_debug_info; |
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186 |
Dwarf_Small *de_debug_abbrev; |
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187 |
Dwarf_Small *de_debug_line; |
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|
188 |
Dwarf_Small *de_debug_loc; |
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189 |
Dwarf_Small *de_debug_aranges; |
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190 |
Dwarf_Small *de_debug_macinfo; |
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191 |
Dwarf_Small *de_debug_pubnames; |
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|
192 |
Dwarf_Small *de_debug_str; |
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193 |
Dwarf_Small *de_debug_frame; |
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|
194 |
Dwarf_Small *de_debug_pubtypes; /* DWARF3 .debug_pubtypes */ |
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195 |
Dwarf_Small *de_debug_frame_eh_gnu; /* gnu for the g++ eh_frame |
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196 |
section */ |
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|
197 |
Dwarf_Addr de_debug_frame_eh_addr; /* gnu for the g++ eh_frame |
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198 |
section. Section address |
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|
199 |
from Elf. Purpose: to handle |
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|
200 |
DW_EH_PE_pcrel encoding. */ |
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|
201 |
|
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|
202 |
Dwarf_Small *de_debug_funcnames; |
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|
203 |
Dwarf_Small *de_debug_typenames; /* SGI IRIX extension essentially |
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204 |
identical to DWARF3 .debug_pubtypes. */ |
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205 |
Dwarf_Small *de_debug_varnames; |
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|
206 |
Dwarf_Small *de_debug_weaknames; |
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|
207 |
|
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208 |
Dwarf_Unsigned de_debug_info_size; |
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209 |
Dwarf_Unsigned de_debug_abbrev_size; |
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210 |
Dwarf_Unsigned de_debug_line_size; |
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|
211 |
Dwarf_Unsigned de_debug_loc_size; |
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|
212 |
Dwarf_Unsigned de_debug_aranges_size; |
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|
213 |
Dwarf_Unsigned de_debug_macinfo_size; |
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|
214 |
Dwarf_Unsigned de_debug_pubnames_size; |
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|
215 |
Dwarf_Unsigned de_debug_str_size; |
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|
216 |
Dwarf_Unsigned de_debug_pubtypes_size; /* DWARF3 .debug_pubtypes*/ |
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217 |
|
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218 |
|
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219 |
Dwarf_Unsigned de_debug_frame_size; |
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220 |
|
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|
221 |
Dwarf_Unsigned de_debug_frame_size_eh_gnu; /* gnu for the g++ |
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222 |
eh_frame section */ |
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|
223 |
|
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|
224 |
Dwarf_Unsigned de_debug_funcnames_size; |
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225 |
Dwarf_Unsigned de_debug_typenames_size; |
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|
226 |
Dwarf_Unsigned de_debug_varnames_size; |
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227 |
Dwarf_Unsigned de_debug_weaknames_size; |
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228 |
|
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229 |
void *(*de_copy_word) (void *, const void *, size_t); |
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unsigned char de_same_endian; |
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231 |
unsigned char de_elf_must_close; /* if non-zero, then |
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232 |
it was dwarf_init (not dwarf_elf_init) |
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233 |
so must elf_end() */ |
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234 |
|
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235 |
/* |
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236 |
The following are used for storing section indicies. |
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237 |
|
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238 |
After a Dwarf_Debug is initialized, a zero for any of |
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239 |
these indicies indicates an absent section. |
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240 |
|
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241 |
If the ELF spec is ever changed to permit 32-bit section |
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242 |
indicies, these will need to be changed. |
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243 |
*/ |
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244 |
Dwarf_Half de_debug_aranges_index; |
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245 |
Dwarf_Half de_debug_line_index; |
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246 |
Dwarf_Half de_debug_loc_index; |
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247 |
Dwarf_Half de_debug_macinfo_index; |
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248 |
Dwarf_Half de_debug_pubnames_index; |
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249 |
Dwarf_Half de_debug_funcnames_index; |
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250 |
Dwarf_Half de_debug_typenames_index; |
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251 |
Dwarf_Half de_debug_varnames_index; |
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252 |
Dwarf_Half de_debug_weaknames_index; |
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253 |
Dwarf_Half de_debug_frame_index; |
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254 |
Dwarf_Half de_debug_frame_eh_gnu_index; |
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255 |
Dwarf_Half de_debug_str_index; |
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256 |
Dwarf_Half de_debug_info_index; |
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257 |
Dwarf_Half de_debug_abbrev_index; |
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258 |
Dwarf_Half de_debug_pubtypes_index; /* DWARF3 .debug_pubtypes */ |
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259 |
|
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260 |
/* Default is DW_FRAME_INITIAL_VALUE from header. */ |
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261 |
Dwarf_Half de_frame_rule_initial_value; |
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262 |
|
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263 |
/* Default is DW_FRAME_LAST_REG_NUM. */ |
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264 |
Dwarf_Half de_frame_reg_rules_entry_count; |
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265 |
|
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266 |
|
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267 |
unsigned char de_big_endian_object; /* non-zero if big-endian |
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268 |
object opened. */ |
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269 |
}; |
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270 |
|
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271 |
typedef struct Dwarf_Chain_s *Dwarf_Chain; |
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272 |
struct Dwarf_Chain_s { |
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273 |
void *ch_item; |
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274 |
Dwarf_Chain ch_next; |
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275 |
}; |
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276 |
|
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277 |
|
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278 |
#define CURRENT_VERSION_STAMP 2 /* DWARF2 */ |
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279 |
#define CURRENT_VERSION_STAMP3 3 /* DWARF3 */ |
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280 |
#define CURRENT_VERSION_STAMP4 3 /* DWARF4 */ |
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281 |
|
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282 |
/* Size of cu header version stamp field. */ |
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283 |
#define CU_VERSION_STAMP_SIZE sizeof(Dwarf_Half) |
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|
284 |
|
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285 |
/* Size of cu header address size field. */ |
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286 |
#define CU_ADDRESS_SIZE_SIZE sizeof(Dwarf_Small) |
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|
287 |
|
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288 |
void *_dwarf_memcpy_swap_bytes(void *s1, const void *s2, size_t len); |
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|
289 |
|
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290 |
#define ORIGINAL_DWARF_OFFSET_SIZE 4 |
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|
291 |
#define DISTINGUISHED_VALUE 0xffffffff |
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292 |
#define DISTINGUISHED_VALUE_OFFSET_SIZE 8 |
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|
293 |
|
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|
294 |
/* |
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295 |
We don't load the sections until they are needed. This function is |
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|
296 |
used to load the section. |
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|
297 |
*/ |
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|
298 |
int _dwarf_load_section(Dwarf_Debug, |
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|
299 |
Dwarf_Half, |
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|
300 |
Dwarf_Small **, |
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|
301 |
Dwarf_Error *); |