include/elf/dwarf.h

   1 /* Declarations and definitions of codes relating to the DWARF symbolic
   2    debugging information format.
   3
   4    Written by Ron Guilmette (rfg@ncd.com)
   5
   6 Copyright (C) 1992 Free Software Foundation, Inc.
   7
   8 This file is part of GNU CC.
   9
  10 GNU CC is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2, or (at your option)
  13 any later version.
  14
  15 GNU CC is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with GNU CC; see the file COPYING.  If not, write to
  22 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  23
  24 /* This file is derived from the DWARF specification (a public document)
  25    Revision 1.0.1 (April 8, 1992) developed by the UNIX International
  26    Programming Languages Special Interest Group (UI/PLSIG) and distributed
  27    by UNIX International.  Copies of this specification are available from
  28    UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054.
  29 */
  30
  31 /* Tag names and codes.  */
  32
  33 enum dwarf_tag {
  34     TAG_padding                 = 0x0000,
  35     TAG_array_type              = 0x0001,
  36     TAG_class_type              = 0x0002,
  37     TAG_entry_point             = 0x0003,
  38     TAG_enumeration_type        = 0x0004,
  39     TAG_formal_parameter        = 0x0005,
  40     TAG_global_subroutine       = 0x0006,
  41     TAG_global_variable         = 0x0007,
  42                                 /* 0x0008 -- reserved */
  43                                 /* 0x0009 -- reserved */
  44     TAG_label                   = 0x000a,
  45     TAG_lexical_block           = 0x000b,
  46     TAG_local_variable          = 0x000c,
  47     TAG_member                  = 0x000d,
  48                                 /* 0x000e -- reserved */
  49     TAG_pointer_type            = 0x000f,
  50     TAG_reference_type          = 0x0010,
  51     TAG_compile_unit            = 0x0011,
  52     TAG_string_type             = 0x0012,
  53     TAG_structure_type          = 0x0013,
  54     TAG_subroutine              = 0x0014,
  55     TAG_subroutine_type         = 0x0015,
  56     TAG_typedef                 = 0x0016,
  57     TAG_union_type              = 0x0017,
  58     TAG_unspecified_parameters  = 0x0018,
  59     TAG_variant                 = 0x0019,
  60     TAG_common_block            = 0x001a,
  61     TAG_common_inclusion        = 0x001b,
  62     TAG_inheritance             = 0x001c,
  63     TAG_inlined_subroutine      = 0x001d,
  64     TAG_module                  = 0x001e,
  65     TAG_ptr_to_member_type      = 0x001f,
  66     TAG_set_type                = 0x0020,
  67     TAG_subrange_type           = 0x0021,
  68     TAG_with_stmt               = 0x0022,
  69
  70     /* GNU extensions */
  71
  72     TAG_format_label            = 0x8000,  /* for FORTRAN 77 and Fortran 90 */
  73     TAG_namelist                = 0x8001,  /* For Fortran 90 */
  74     TAG_function_template       = 0x8002,  /* for C++ */
  75     TAG_class_template          = 0x8003   /* for C++ */
  76 };
  77
  78 #define TAG_lo_user     0x8000  /* implementation-defined range start */
  79 #define TAG_hi_user     0xffff  /* implementation-defined range end */
  80 #define TAG_source_file TAG_compile_unit  /* for backward compatibility */
  81
  82 /* Form names and codes.  */
  83
  84 enum dwarf_form {
  85     FORM_ADDR   = 0x1,
  86     FORM_REF    = 0x2,
  87     FORM_BLOCK2 = 0x3,
  88     FORM_BLOCK4 = 0x4,
  89     FORM_DATA2  = 0x5,
  90     FORM_DATA4  = 0x6,
  91     FORM_DATA8  = 0x7,
  92     FORM_STRING = 0x8
  93 };
  94
  95 /* Attribute names and codes.  */
  96
  97 enum dwarf_attribute {
  98     AT_sibling                  = (0x0010|FORM_REF),
  99     AT_location                 = (0x0020|FORM_BLOCK2),
 100     AT_name                     = (0x0030|FORM_STRING),
 101     AT_fund_type                = (0x0050|FORM_DATA2),
 102     AT_mod_fund_type            = (0x0060|FORM_BLOCK2),
 103     AT_user_def_type            = (0x0070|FORM_REF),
 104     AT_mod_u_d_type             = (0x0080|FORM_BLOCK2),
 105     AT_ordering                 = (0x0090|FORM_DATA2),
 106     AT_subscr_data              = (0x00a0|FORM_BLOCK2),
 107     AT_byte_size                = (0x00b0|FORM_DATA4),
 108     AT_bit_offset               = (0x00c0|FORM_DATA2),
 109     AT_bit_size                 = (0x00d0|FORM_DATA4),
 110                                 /* (0x00e0|FORM_xxxx) -- reserved */
 111     AT_element_list             = (0x00f0|FORM_BLOCK4),
 112     AT_stmt_list                = (0x0100|FORM_DATA4),
 113     AT_low_pc                   = (0x0110|FORM_ADDR),
 114     AT_high_pc                  = (0x0120|FORM_ADDR),
 115     AT_language                 = (0x0130|FORM_DATA4),
 116     AT_member                   = (0x0140|FORM_REF),
 117     AT_discr                    = (0x0150|FORM_REF),
 118     AT_discr_value              = (0x0160|FORM_BLOCK2),
 119                                 /* (0x0170|FORM_xxxx) -- reserved */
 120                                 /* (0x0180|FORM_xxxx) -- reserved */
 121     AT_string_length            = (0x0190|FORM_BLOCK2),
 122     AT_common_reference         = (0x01a0|FORM_REF),
 123     AT_comp_dir                 = (0x01b0|FORM_STRING),
 124         AT_const_value_string   = (0x01c0|FORM_STRING),
 125         AT_const_value_data2    = (0x01c0|FORM_DATA2),
 126         AT_const_value_data4    = (0x01c0|FORM_DATA4),
 127         AT_const_value_data8    = (0x01c0|FORM_DATA8),
 128         AT_const_value_block2   = (0x01c0|FORM_BLOCK2),
 129         AT_const_value_block4   = (0x01c0|FORM_BLOCK4),
 130     AT_containing_type          = (0x01d0|FORM_REF),
 131         AT_default_value_addr   = (0x01e0|FORM_ADDR),
 132         AT_default_value_data2  = (0x01e0|FORM_DATA2),
 133         AT_default_value_data4  = (0x01e0|FORM_DATA4),
 134         AT_default_value_data8  = (0x01e0|FORM_DATA8),
 135         AT_default_value_string = (0x01e0|FORM_STRING),
 136     AT_friends                  = (0x01f0|FORM_BLOCK2),
 137     AT_inline                   = (0x0200|FORM_STRING),
 138     AT_is_optional              = (0x0210|FORM_STRING),
 139         AT_lower_bound_ref      = (0x0220|FORM_REF),
 140         AT_lower_bound_data2    = (0x0220|FORM_DATA2),
 141         AT_lower_bound_data4    = (0x0220|FORM_DATA4),
 142         AT_lower_bound_data8    = (0x0220|FORM_DATA8),
 143     AT_private                  = (0x0240|FORM_STRING),
 144     AT_producer                 = (0x0250|FORM_STRING),
 145     AT_program                  = (0x0230|FORM_STRING),
 146     AT_protected                = (0x0260|FORM_STRING),
 147     AT_prototyped               = (0x0270|FORM_STRING),
 148     AT_public                   = (0x0280|FORM_STRING),
 149     AT_pure_virtual             = (0x0290|FORM_STRING),
 150     AT_return_addr              = (0x02a0|FORM_BLOCK2),
 151     AT_abstract_origin          = (0x02b0|FORM_REF),
 152     AT_start_scope              = (0x02c0|FORM_DATA4),
 153     AT_stride_size              = (0x02e0|FORM_DATA4),
 154         AT_upper_bound_ref      = (0x02f0|FORM_REF),
 155         AT_upper_bound_data2    = (0x02f0|FORM_DATA2),
 156         AT_upper_bound_data4    = (0x02f0|FORM_DATA4),
 157         AT_upper_bound_data8    = (0x02f0|FORM_DATA8),
 158     AT_virtual                  = (0x0300|FORM_STRING),
 159
 160     /* GNU extensions.  */
 161
 162     AT_sf_names                 = (0x8000|FORM_DATA4),
 163     AT_src_info                 = (0x8010|FORM_DATA4),
 164     AT_mac_info                 = (0x8020|FORM_DATA4),
 165     AT_src_coords               = (0x8030|FORM_DATA4),
 166     AT_body_begin               = (0x8040|FORM_ADDR),
 167     AT_body_end                 = (0x8050|FORM_ADDR)
 168 };
 169
 170 #define AT_lo_user      0x8000  /* implementation-defined range start */
 171 #define AT_hi_user      0xffff  /* implementation-defined range end */
 172
 173 /* Location atom names and codes.  */
 174
 175 enum dwarf_location_atom {
 176     OP_REG      = 0x01,
 177     OP_BASEREG  = 0x02,
 178     OP_ADDR     = 0x03,
 179     OP_CONST    = 0x04,
 180     OP_DEREF2   = 0x05,
 181     OP_DEREF4   = 0x06,
 182     OP_ADD      = 0x07
 183 };
 184
 185 #define OP_LO_USER      0x80  /* implementation-defined range start */
 186 #define OP_HI_USER      0xff  /* implementation-defined range end */
 187
 188 /* Fundamental type names and codes.  */
 189
 190 enum dwarf_fundamental_type {
 191     FT_char             = 0x0001,
 192     FT_signed_char      = 0x0002,
 193     FT_unsigned_char    = 0x0003,
 194     FT_short            = 0x0004,
 195     FT_signed_short     = 0x0005,
 196     FT_unsigned_short   = 0x0006,
 197     FT_integer          = 0x0007,
 198     FT_signed_integer   = 0x0008,
 199     FT_unsigned_integer = 0x0009,
 200     FT_long             = 0x000a,
 201     FT_signed_long      = 0x000b,
 202     FT_unsigned_long    = 0x000c,
 203     FT_pointer          = 0x000d,  /* an alias for (void *) */
 204     FT_float            = 0x000e,
 205     FT_dbl_prec_float   = 0x000f,
 206     FT_ext_prec_float   = 0x0010,  /* breaks "classic" svr4 SDB */
 207     FT_complex          = 0x0011,  /* breaks "classic" svr4 SDB */
 208     FT_dbl_prec_complex = 0x0012,  /* breaks "classic" svr4 SDB */
 209                         /* 0x0013 -- reserved */
 210     FT_void             = 0x0014,
 211     FT_boolean          = 0x0015,  /* breaks "classic" svr4 SDB */
 212     FT_ext_prec_complex = 0x0016,  /* breaks "classic" svr4 SDB */
 213     FT_label            = 0x0017,
 214
 215     /* GNU extensions
 216        The low order byte must indicate the size (in bytes) for the type.
 217        All of these types will probably break "classic" svr4 SDB */
 218
 219     FT_long_long        = 0x8008,
 220     FT_signed_long_long = 0x8108,
 221     FT_unsigned_long_long = 0x8208,
 222
 223     FT_int8             = 0x9001,
 224     FT_signed_int8      = 0x9101,
 225     FT_unsigned_int8    = 0x9201,
 226     FT_int16            = 0x9302,
 227     FT_signed_int16     = 0x9402,
 228     FT_unsigned_int16   = 0x9502,
 229     FT_int32            = 0x9604,
 230     FT_signed_int32     = 0x9704,
 231     FT_unsigned_int32   = 0x9804,
 232     FT_int64            = 0x9908,
 233     FT_signed_int64     = 0x9a08,
 234     FT_unsigned_int64   = 0x9b08,
 235
 236     FT_real32           = 0xa004,
 237     FT_real64           = 0xa108,
 238     FT_real96           = 0xa20c,
 239     FT_real128          = 0xa310
 240 };
 241
 242 #define FT_lo_user      0x8000  /* implementation-defined range start */
 243 #define FT_hi_user      0xffff  /* implementation defined range end */
 244
 245 /* Type modifier names and codes.  */
 246
 247 enum dwarf_type_modifier {
 248     MOD_pointer_to      = 0x01,
 249     MOD_reference_to    = 0x02,
 250     MOD_const           = 0x03,
 251     MOD_volatile        = 0x04
 252 };
 253
 254 #define MOD_lo_user     0x80  /* implementation-defined range start */
 255 #define MOD_hi_user     0xff  /* implementation-defined range end */
 256
 257 /* Array ordering names and codes.  */
 258
 259 enum dwarf_array_dim_ordering {
 260     ORD_row_major       = 0,
 261     ORD_col_major       = 1
 262 };
 263
 264 /* Array subscript format names and codes.  */
 265
 266 enum dwarf_subscr_data_formats {
 267     FMT_FT_C_C  = 0x0,
 268     FMT_FT_C_X  = 0x1,
 269     FMT_FT_X_C  = 0x2,
 270     FMT_FT_X_X  = 0x3,
 271     FMT_UT_C_C  = 0x4,
 272     FMT_UT_C_X  = 0x5,
 273     FMT_UT_X_C  = 0x6,
 274     FMT_UT_X_X  = 0x7,
 275     FMT_ET      = 0x8
 276 };
 277
 278 /* Derived from above for ease of use.  */
 279
 280 #define FMT_CODE(_FUNDAMENTAL_TYPE_P, _UB_CONST_P, _LB_CONST_P) \
 281  (((_FUNDAMENTAL_TYPE_P) ? 0 : 4)       \
 282   | ((_UB_CONST_P) ? 0 : 2)             \
 283   | ((_LB_CONST_P) ? 0 : 1))
 284
 285 /* Source language names and codes.  */
 286
 287 enum dwarf_source_language {
 288     LANG_C89            = 0x00000001,
 289     LANG_C              = 0x00000002,
 290     LANG_ADA83          = 0x00000003,
 291     LANG_C_PLUS_PLUS    = 0x00000004,
 292     LANG_COBOL74        = 0x00000005,
 293     LANG_COBOL85        = 0x00000006,
 294     LANG_FORTRAN77      = 0x00000007,
 295     LANG_FORTRAN90      = 0x00000008,
 296     LANG_PASCAL83       = 0x00000009,
 297     LANG_MODULA2        = 0x0000000a,
 298
 299     /* GNU extensions */
 300
 301     LANG_CHILL          = 0x00008000    /* for GNU Chill */
 302 };
 303
 304 #define LANG_lo_user    0x00008000  /* implementation-defined range start */
 305 #define LANG_hi_user    0x0000ffff  /* implementation-defined range end */
 306
 307 /* Names and codes for GNU "macinfo" extension.  */
 308
 309 enum dwarf_macinfo_record_type {
 310     MACINFO_start       = 's',
 311     MACINFO_resume      = 'r',
 312     MACINFO_define      = 'd',
 313     MACINFO_undef       = 'u'
 314 };