binutils/dwarf.h

   1 /* dwarf.h - DWARF support header file
   2    Copyright 2005, 2007, 2008, 2009, 2010, 2011
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 typedef unsigned HOST_WIDEST_INT  dwarf_vma;
  23 typedef HOST_WIDEST_INT           dwarf_signed_vma;
  24 typedef unsigned HOST_WIDEST_INT  dwarf_size_type;
  25
  26 /* Structure found in the .debug_line section.  */
  27 typedef struct
  28 {
  29   unsigned char li_length          [4];
  30   unsigned char li_version         [2];
  31   unsigned char li_prologue_length [4];
  32   unsigned char li_min_insn_length [1];
  33   unsigned char li_default_is_stmt [1];
  34   unsigned char li_line_base       [1];
  35   unsigned char li_line_range      [1];
  36   unsigned char li_opcode_base     [1];
  37 }
  38 DWARF2_External_LineInfo;
  39
  40 typedef struct
  41 {
  42   dwarf_vma      li_length;
  43   unsigned short li_version;
  44   unsigned int   li_prologue_length;
  45   unsigned char  li_min_insn_length;
  46   unsigned char  li_max_ops_per_insn;
  47   unsigned char  li_default_is_stmt;
  48   int            li_line_base;
  49   unsigned char  li_line_range;
  50   unsigned char  li_opcode_base;
  51 }
  52 DWARF2_Internal_LineInfo;
  53
  54 /* Structure found in .debug_pubnames section.  */
  55 typedef struct
  56 {
  57   unsigned char pn_length  [4];
  58   unsigned char pn_version [2];
  59   unsigned char pn_offset  [4];
  60   unsigned char pn_size    [4];
  61 }
  62 DWARF2_External_PubNames;
  63
  64 typedef struct
  65 {
  66   dwarf_vma      pn_length;
  67   unsigned short pn_version;
  68   dwarf_vma      pn_offset;
  69   dwarf_vma      pn_size;
  70 }
  71 DWARF2_Internal_PubNames;
  72
  73 /* Structure found in .debug_info section.  */
  74 typedef struct
  75 {
  76   unsigned char  cu_length        [4];
  77   unsigned char  cu_version       [2];
  78   unsigned char  cu_abbrev_offset [4];
  79   unsigned char  cu_pointer_size  [1];
  80 }
  81 DWARF2_External_CompUnit;
  82
  83 typedef struct
  84 {
  85   dwarf_vma      cu_length;
  86   unsigned short cu_version;
  87   dwarf_vma      cu_abbrev_offset;
  88   unsigned char  cu_pointer_size;
  89 }
  90 DWARF2_Internal_CompUnit;
  91
  92 typedef struct
  93 {
  94   unsigned char  ar_length       [4];
  95   unsigned char  ar_version      [2];
  96   unsigned char  ar_info_offset  [4];
  97   unsigned char  ar_pointer_size [1];
  98   unsigned char  ar_segment_size [1];
  99 }
 100 DWARF2_External_ARange;
 101
 102 typedef struct
 103 {
 104   dwarf_vma      ar_length;
 105   unsigned short ar_version;
 106   dwarf_vma      ar_info_offset;
 107   unsigned char  ar_pointer_size;
 108   unsigned char  ar_segment_size;
 109 }
 110 DWARF2_Internal_ARange;
 111
 112 enum dwarf_section_display_enum
 113 {
 114   abbrev = 0,
 115   aranges,
 116   frame,
 117   info,
 118   line,
 119   pubnames,
 120   eh_frame,
 121   macinfo,
 122   macro,
 123   str,
 124   loc,
 125   pubtypes,
 126   ranges,
 127   static_func,
 128   static_vars,
 129   types,
 130   weaknames,
 131   gdb_index,
 132   trace_info,
 133   trace_abbrev,
 134   trace_aranges,
 135   info_dwo,
 136   abbrev_dwo,
 137   types_dwo,
 138   line_dwo,
 139   loc_dwo,
 140   macro_dwo,
 141   macinfo_dwo,
 142   str_dwo,
 143   str_index,
 144   str_index_dwo,
 145   debug_addr,
 146   dwp_cu_index,
 147   dwp_tu_index,
 148   max
 149 };
 150
 151 struct dwarf_section
 152 {
 153   /* A debug section has a different name when it's stored compressed
 154      or not.  COMPRESSED_NAME and UNCOMPRESSED_NAME are the two
 155      possibilities.  NAME is set to whichever one is used for this
 156      input file, as determined by load_debug_section().  */
 157   const char *uncompressed_name;
 158   const char *compressed_name;
 159   const char *name;
 160   unsigned char *start;
 161   dwarf_vma address;
 162   dwarf_size_type size;
 163   enum dwarf_section_display_enum abbrev_sec;
 164 };
 165
 166 /* A structure containing the name of a debug section
 167    and a pointer to a function that can decode it.  */
 168 struct dwarf_section_display
 169 {
 170   struct dwarf_section section;
 171   int (*display) (struct dwarf_section *, void *);
 172   int *enabled;
 173   unsigned int relocate : 1;
 174 };
 175
 176 extern struct dwarf_section_display debug_displays [];
 177
 178 /* This structure records the information that
 179    we extract from the.debug_info section.  */
 180 typedef struct
 181 {
 182   unsigned int   pointer_size;
 183   unsigned int   offset_size;
 184   int            dwarf_version;
 185   dwarf_vma      cu_offset;
 186   dwarf_vma      base_address;
 187   /* This field is filled in when reading the attribute DW_AT_GNU_addr_base and
 188      is used with the form DW_AT_GNU_FORM_addr_index.  */
 189   dwarf_vma      addr_base;
 190   /* This field is filled in when reading the attribute DW_AT_GNU_ranges_base and
 191      is used when calculating ranges.  */
 192   dwarf_vma      ranges_base;
 193   /* This is an array of offsets to the location list table.  */
 194   dwarf_vma *    loc_offsets;
 195   int *          have_frame_base;
 196   unsigned int   num_loc_offsets;
 197   unsigned int   max_loc_offsets;
 198   /* List of .debug_ranges offsets seen in this .debug_info.  */
 199   dwarf_vma *    range_lists;
 200   unsigned int   num_range_lists;
 201   unsigned int   max_range_lists;
 202 }
 203 debug_info;
 204
 205 extern int eh_addr_size;
 206
 207 extern int do_debug_info;
 208 extern int do_debug_abbrevs;
 209 extern int do_debug_lines;
 210 extern int do_debug_pubnames;
 211 extern int do_debug_pubtypes;
 212 extern int do_debug_aranges;
 213 extern int do_debug_ranges;
 214 extern int do_debug_frames;
 215 extern int do_debug_frames_interp;
 216 extern int do_debug_macinfo;
 217 extern int do_debug_str;
 218 extern int do_debug_loc;
 219 extern int do_gdb_index;
 220 extern int do_trace_info;
 221 extern int do_trace_abbrevs;
 222 extern int do_trace_aranges;
 223 extern int do_debug_addr;
 224 extern int do_debug_cu_index;
 225 extern int do_wide;
 226
 227 extern int dwarf_cutoff_level;
 228 extern unsigned long dwarf_start_die;
 229
 230 extern int dwarf_check;
 231
 232 extern void init_dwarf_regnames (unsigned int);
 233 extern void init_dwarf_regnames_i386 (void);
 234 extern void init_dwarf_regnames_x86_64 (void);
 235
 236 extern int load_debug_section (enum dwarf_section_display_enum, void *);
 237 extern void free_debug_section (enum dwarf_section_display_enum);
 238
 239 extern void free_debug_memory (void);
 240
 241 extern void dwarf_select_sections_by_names (const char *);
 242 extern void dwarf_select_sections_by_letters (const char *);
 243 extern void dwarf_select_sections_all (void);
 244
 245 unsigned int * find_cu_tu_set (void *, unsigned int);
 246
 247 void * cmalloc (size_t, size_t);
 248 void * xcmalloc (size_t, size_t);
 249 void * xcrealloc (void *, size_t, size_t);
 250
 251 dwarf_vma read_leb128 (unsigned char *, unsigned int *, int);