binutils/dwarf.h

   1 /* dwarf.h - DWARF support header file
   2    Copyright 2005-2013 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 enum dwarf_section_display_enum
 112 {
 113   abbrev = 0,
 114   aranges,
 115   frame,
 116   info,
 117   line,
 118   pubnames,
 119   eh_frame,
 120   macinfo,
 121   macro,
 122   str,
 123   loc,
 124   pubtypes,
 125   ranges,
 126   static_func,
 127   static_vars,
 128   types,
 129   weaknames,
 130   gdb_index,
 131   trace_info,
 132   trace_abbrev,
 133   trace_aranges,
 134   info_dwo,
 135   abbrev_dwo,
 136   types_dwo,
 137   line_dwo,
 138   loc_dwo,
 139   macro_dwo,
 140   macinfo_dwo,
 141   str_dwo,
 142   str_index,
 143   str_index_dwo,
 144   debug_addr,
 145   dwp_cu_index,
 146   dwp_tu_index,
 147   max
 148 };
 149
 150 struct dwarf_section
 151 {
 152   /* A debug section has a different name when it's stored compressed
 153      or not.  COMPRESSED_NAME and UNCOMPRESSED_NAME are the two
 154      possibilities.  NAME is set to whichever one is used for this
 155      input file, as determined by load_debug_section().  */
 156   const char *uncompressed_name;
 157   const char *compressed_name;
 158   const char *name;
 159   unsigned char *start;
 160   dwarf_vma address;
 161   dwarf_size_type size;
 162   enum dwarf_section_display_enum abbrev_sec;
 163 };
 164
 165 /* A structure containing the name of a debug section
 166    and a pointer to a function that can decode it.  */
 167 struct dwarf_section_display
 168 {
 169   struct dwarf_section section;
 170   int (*display) (struct dwarf_section *, void *);
 171   int *enabled;
 172   unsigned int relocate : 1;
 173 };
 174
 175 extern struct dwarf_section_display debug_displays [];
 176
 177 /* This structure records the information that
 178    we extract from the.debug_info section.  */
 179 typedef struct
 180 {
 181   unsigned int   pointer_size;
 182   unsigned int   offset_size;
 183   int            dwarf_version;
 184   dwarf_vma      cu_offset;
 185   dwarf_vma      base_address;
 186   /* This field is filled in when reading the attribute DW_AT_GNU_addr_base and
 187      is used with the form DW_AT_GNU_FORM_addr_index.  */
 188   dwarf_vma      addr_base;
 189   /* This field is filled in when reading the attribute DW_AT_GNU_ranges_base and
 190      is used when calculating ranges.  */
 191   dwarf_vma      ranges_base;
 192   /* This is an array of offsets to the location list table.  */
 193   dwarf_vma *    loc_offsets;
 194   int *          have_frame_base;
 195   unsigned int   num_loc_offsets;
 196   unsigned int   max_loc_offsets;
 197   /* List of .debug_ranges offsets seen in this .debug_info.  */
 198   dwarf_vma *    range_lists;
 199   unsigned int   num_range_lists;
 200   unsigned int   max_range_lists;
 201 }
 202 debug_info;
 203
 204 extern int eh_addr_size;
 205
 206 extern int do_debug_info;
 207 extern int do_debug_abbrevs;
 208 extern int do_debug_lines;
 209 extern int do_debug_pubnames;
 210 extern int do_debug_pubtypes;
 211 extern int do_debug_aranges;
 212 extern int do_debug_ranges;
 213 extern int do_debug_frames;
 214 extern int do_debug_frames_interp;
 215 extern int do_debug_macinfo;
 216 extern int do_debug_str;
 217 extern int do_debug_loc;
 218 extern int do_gdb_index;
 219 extern int do_trace_info;
 220 extern int do_trace_abbrevs;
 221 extern int do_trace_aranges;
 222 extern int do_debug_addr;
 223 extern int do_debug_cu_index;
 224 extern int do_wide;
 225
 226 extern int dwarf_cutoff_level;
 227 extern unsigned long dwarf_start_die;
 228
 229 extern int dwarf_check;
 230
 231 extern void init_dwarf_regnames (unsigned int);
 232 extern void init_dwarf_regnames_i386 (void);
 233 extern void init_dwarf_regnames_x86_64 (void);
 234
 235 extern int load_debug_section (enum dwarf_section_display_enum, void *);
 236 extern void free_debug_section (enum dwarf_section_display_enum);
 237
 238 extern void free_debug_memory (void);
 239
 240 extern void dwarf_select_sections_by_names (const char *);
 241 extern void dwarf_select_sections_by_letters (const char *);
 242 extern void dwarf_select_sections_all (void);
 243
 244 unsigned int * find_cu_tu_set (void *, unsigned int);
 245
 246 void * cmalloc (size_t, size_t);
 247 void * xcmalloc (size_t, size_t);
 248 void * xcrealloc (void *, size_t, size_t);
 249
 250 extern dwarf_vma read_leb128 (unsigned char *, unsigned int *, bfd_boolean, const unsigned char * const);