binutils/dwarf.h

   1 /* dwarf.h - DWARF support header file
   2    Copyright (C) 2005-2015 Free Software Foundation, Inc.
   3
   4    This file is part of GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 typedef unsigned HOST_WIDEST_INT  dwarf_vma;
  22 typedef HOST_WIDEST_INT           dwarf_signed_vma;
  23 typedef unsigned HOST_WIDEST_INT  dwarf_size_type;
  24
  25 /* Structure found in the .debug_line section.  */
  26 typedef struct
  27 {
  28   unsigned char li_length          [4];
  29   unsigned char li_version         [2];
  30   unsigned char li_prologue_length [4];
  31   unsigned char li_min_insn_length [1];
  32   unsigned char li_default_is_stmt [1];
  33   unsigned char li_line_base       [1];
  34   unsigned char li_line_range      [1];
  35   unsigned char li_opcode_base     [1];
  36 }
  37 DWARF2_External_LineInfo;
  38
  39 typedef struct
  40 {
  41   dwarf_vma      li_length;
  42   unsigned short li_version;
  43   unsigned int   li_prologue_length;
  44   unsigned char  li_min_insn_length;
  45   unsigned char  li_max_ops_per_insn;
  46   unsigned char  li_default_is_stmt;
  47   int            li_line_base;
  48   unsigned char  li_line_range;
  49   unsigned char  li_opcode_base;
  50 }
  51 DWARF2_Internal_LineInfo;
  52
  53 /* Structure found in .debug_pubnames section.  */
  54 typedef struct
  55 {
  56   unsigned char pn_length  [4];
  57   unsigned char pn_version [2];
  58   unsigned char pn_offset  [4];
  59   unsigned char pn_size    [4];
  60 }
  61 DWARF2_External_PubNames;
  62
  63 typedef struct
  64 {
  65   dwarf_vma      pn_length;
  66   unsigned short pn_version;
  67   dwarf_vma      pn_offset;
  68   dwarf_vma      pn_size;
  69 }
  70 DWARF2_Internal_PubNames;
  71
  72 /* Structure found in .debug_info section.  */
  73 typedef struct
  74 {
  75   unsigned char  cu_length        [4];
  76   unsigned char  cu_version       [2];
  77   unsigned char  cu_abbrev_offset [4];
  78   unsigned char  cu_pointer_size  [1];
  79 }
  80 DWARF2_External_CompUnit;
  81
  82 typedef struct
  83 {
  84   dwarf_vma      cu_length;
  85   unsigned short cu_version;
  86   dwarf_vma      cu_abbrev_offset;
  87   unsigned char  cu_pointer_size;
  88 }
  89 DWARF2_Internal_CompUnit;
  90
  91 typedef struct
  92 {
  93   unsigned char  ar_length       [4];
  94   unsigned char  ar_version      [2];
  95   unsigned char  ar_info_offset  [4];
  96   unsigned char  ar_pointer_size [1];
  97   unsigned char  ar_segment_size [1];
  98 }
  99 DWARF2_External_ARange;
 100
 101 typedef struct
 102 {
 103   dwarf_vma      ar_length;
 104   unsigned short ar_version;
 105   dwarf_vma      ar_info_offset;
 106   unsigned char  ar_pointer_size;
 107   unsigned char  ar_segment_size;
 108 }
 109 DWARF2_Internal_ARange;
 110
 111 /* N.B. The order here must match the order in debug_displays.  */
 112
 113 enum dwarf_section_display_enum
 114 {
 115   abbrev = 0,
 116   aranges,
 117   frame,
 118   info,
 119   line,
 120   pubnames,
 121   gnu_pubnames,
 122   eh_frame,
 123   macinfo,
 124   macro,
 125   str,
 126   loc,
 127   pubtypes,
 128   gnu_pubtypes,
 129   ranges,
 130   static_func,
 131   static_vars,
 132   types,
 133   weaknames,
 134   gdb_index,
 135   trace_info,
 136   trace_abbrev,
 137   trace_aranges,
 138   info_dwo,
 139   abbrev_dwo,
 140   types_dwo,
 141   line_dwo,
 142   loc_dwo,
 143   macro_dwo,
 144   macinfo_dwo,
 145   str_dwo,
 146   str_index,
 147   str_index_dwo,
 148   debug_addr,
 149   dwp_cu_index,
 150   dwp_tu_index,
 151   max
 152 };
 153
 154 struct dwarf_section
 155 {
 156   /* A debug section has a different name when it's stored compressed
 157      or not.  COMPRESSED_NAME and UNCOMPRESSED_NAME are the two
 158      possibilities.  NAME is set to whichever one is used for this
 159      input file, as determined by load_debug_section().  */
 160   const char *uncompressed_name;
 161   const char *compressed_name;
 162   const char *name;
 163   unsigned char *start;
 164   dwarf_vma address;
 165   dwarf_size_type size;
 166   enum dwarf_section_display_enum abbrev_sec;
 167   /* A spare field for random use.  */
 168   void *user_data;
 169 };
 170
 171 /* A structure containing the name of a debug section
 172    and a pointer to a function that can decode it.  */
 173 struct dwarf_section_display
 174 {
 175   struct dwarf_section section;
 176   int (*display) (struct dwarf_section *, void *);
 177   int *enabled;
 178   unsigned int relocate : 1;
 179 };
 180
 181 extern struct dwarf_section_display debug_displays [];
 182
 183 /* This structure records the information that
 184    we extract from the.debug_info section.  */
 185 typedef struct
 186 {
 187   unsigned int   pointer_size;
 188   unsigned int   offset_size;
 189   int            dwarf_version;
 190   dwarf_vma      cu_offset;
 191   dwarf_vma      base_address;
 192   /* This field is filled in when reading the attribute DW_AT_GNU_addr_base and
 193      is used with the form DW_AT_GNU_FORM_addr_index.  */
 194   dwarf_vma      addr_base;
 195   /* This field is filled in when reading the attribute DW_AT_GNU_ranges_base and
 196      is used when calculating ranges.  */
 197   dwarf_vma      ranges_base;
 198   /* This is an array of offsets to the location list table.  */
 199   dwarf_vma *    loc_offsets;
 200   int *          have_frame_base;
 201   unsigned int   num_loc_offsets;
 202   unsigned int   max_loc_offsets;
 203   /* List of .debug_ranges offsets seen in this .debug_info.  */
 204   dwarf_vma *    range_lists;
 205   unsigned int   num_range_lists;
 206   unsigned int   max_range_lists;
 207 }
 208 debug_info;
 209
 210 extern int eh_addr_size;
 211
 212 extern int do_debug_info;
 213 extern int do_debug_abbrevs;
 214 extern int do_debug_lines;
 215 extern int do_debug_pubnames;
 216 extern int do_debug_pubtypes;
 217 extern int do_debug_aranges;
 218 extern int do_debug_ranges;
 219 extern int do_debug_frames;
 220 extern int do_debug_frames_interp;
 221 extern int do_debug_macinfo;
 222 extern int do_debug_str;
 223 extern int do_debug_loc;
 224 extern int do_gdb_index;
 225 extern int do_trace_info;
 226 extern int do_trace_abbrevs;
 227 extern int do_trace_aranges;
 228 extern int do_debug_addr;
 229 extern int do_debug_cu_index;
 230 extern int do_wide;
 231
 232 extern int dwarf_cutoff_level;
 233 extern unsigned long dwarf_start_die;
 234
 235 extern int dwarf_check;
 236
 237 extern void init_dwarf_regnames (unsigned int);
 238 extern void init_dwarf_regnames_i386 (void);
 239 extern void init_dwarf_regnames_x86_64 (void);
 240 extern void init_dwarf_regnames_aarch64 (void);
 241
 242 extern int load_debug_section (enum dwarf_section_display_enum, void *);
 243 extern void free_debug_section (enum dwarf_section_display_enum);
 244
 245 extern void free_debug_memory (void);
 246
 247 extern void dwarf_select_sections_by_names (const char *);
 248 extern void dwarf_select_sections_by_letters (const char *);
 249 extern void dwarf_select_sections_all (void);
 250
 251 extern unsigned int * find_cu_tu_set (void *, unsigned int);
 252
 253 extern void * cmalloc (size_t, size_t);
 254 extern void * xcalloc2 (size_t, size_t);
 255 extern void * xcmalloc (size_t, size_t);
 256 extern void * xcrealloc (void *, size_t, size_t);
 257
 258 extern dwarf_vma read_leb128 (unsigned char *, unsigned int *, bfd_boolean, const unsigned char * const);