gcc/dwarf.h

   1 /* Declarations and definitions of codes relating to the DWARF symbolic
   2    debugging information format.
   3
   4    Written by Ron Guilmette (rfg@netcom.com)
   5
   6 Copyright (C) 1992 Free Software Foundation, Inc.
   7
   8 This file is part of GCC.
   9
  10 GCC is free software; you can redistribute it and/or modify it under
  11 the terms of the GNU General Public License as published by the Free
  12 Software Foundation; either version 2, or (at your option) any later
  13 version.
  14
  15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with GCC; see the file COPYING.  If not, write to the Free
  22 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  23 02111-1307, USA.  */
  24
  25 /* This file is derived from the DWARF specification (a public document)
  26    Revision 1.0.1 (April 8, 1992) developed by the UNIX International
  27    Programming Languages Special Interest Group (UI/PLSIG) and distributed
  28    by UNIX International.  Copies of this specification are available from
  29    UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054.
  30 */
  31
  32 /* Tag names and codes.  */
  33
  34 enum dwarf_tag {
  35     TAG_padding                 = 0x0000,
  36     TAG_array_type              = 0x0001,
  37     TAG_class_type              = 0x0002,
  38     TAG_entry_point             = 0x0003,
  39     TAG_enumeration_type        = 0x0004,
  40     TAG_formal_parameter        = 0x0005,
  41     TAG_global_subroutine       = 0x0006,
  42     TAG_global_variable         = 0x0007,
  43                                 /* 0x0008 -- reserved */
  44                                 /* 0x0009 -- reserved */
  45     TAG_label                   = 0x000a,
  46     TAG_lexical_block           = 0x000b,
  47     TAG_local_variable          = 0x000c,
  48     TAG_member                  = 0x000d,
  49                                 /* 0x000e -- reserved */
  50     TAG_pointer_type            = 0x000f,
  51     TAG_reference_type          = 0x0010,
  52     TAG_compile_unit            = 0x0011,
  53     TAG_string_type             = 0x0012,
  54     TAG_structure_type          = 0x0013,
  55     TAG_subroutine              = 0x0014,
  56     TAG_subroutine_type         = 0x0015,
  57     TAG_typedef                 = 0x0016,
  58     TAG_union_type              = 0x0017,
  59     TAG_unspecified_parameters  = 0x0018,
  60     TAG_variant                 = 0x0019,
  61     TAG_common_block            = 0x001a,
  62     TAG_common_inclusion        = 0x001b,
  63     TAG_inheritance             = 0x001c,
  64     TAG_inlined_subroutine      = 0x001d,
  65     TAG_module                  = 0x001e,
  66     TAG_ptr_to_member_type      = 0x001f,
  67     TAG_set_type                = 0x0020,
  68     TAG_subrange_type           = 0x0021,
  69     TAG_with_stmt               = 0x0022,
  70
  71     /* GNU extensions */
  72
  73     TAG_format_label            = 0x8000,  /* for FORTRAN 77 and Fortran 90 */
  74     TAG_namelist                = 0x8001,  /* For Fortran 90 */
  75     TAG_function_template       = 0x8002,  /* for C++ */
  76     TAG_class_template          = 0x8003   /* for C++ */
  77 };
  78
  79 #define TAG_lo_user     0x8000  /* implementation-defined range start */
  80 #define TAG_hi_user     0xffff  /* implementation-defined range end */
  81 #define TAG_source_file TAG_compile_unit  /* for backward compatibility */
  82
  83 /* Form names and codes.  */
  84
  85 enum dwarf_form {
  86     FORM_ADDR   = 0x1,
  87     FORM_REF    = 0x2,
  88     FORM_BLOCK2 = 0x3,
  89     FORM_BLOCK4 = 0x4,
  90     FORM_DATA2  = 0x5,
  91     FORM_DATA4  = 0x6,
  92     FORM_DATA8  = 0x7,
  93     FORM_STRING = 0x8
  94 };
  95
  96 /* Attribute names and codes.  */
  97
  98 enum dwarf_attribute {
  99     AT_sibling                  = (0x0010|FORM_REF),
 100     AT_location                 = (0x0020|FORM_BLOCK2),
 101     AT_name                     = (0x0030|FORM_STRING),
 102     AT_fund_type                = (0x0050|FORM_DATA2),
 103     AT_mod_fund_type            = (0x0060|FORM_BLOCK2),
 104     AT_user_def_type            = (0x0070|FORM_REF),
 105     AT_mod_u_d_type             = (0x0080|FORM_BLOCK2),
 106     AT_ordering                 = (0x0090|FORM_DATA2),
 107     AT_subscr_data              = (0x00a0|FORM_BLOCK2),
 108     AT_byte_size                = (0x00b0|FORM_DATA4),
 109     AT_bit_offset               = (0x00c0|FORM_DATA2),
 110     AT_bit_size                 = (0x00d0|FORM_DATA4),
 111                                 /* (0x00e0|FORM_xxxx) -- reserved */
 112     AT_element_list             = (0x00f0|FORM_BLOCK4),
 113     AT_stmt_list                = (0x0100|FORM_DATA4),
 114     AT_low_pc                   = (0x0110|FORM_ADDR),
 115     AT_high_pc                  = (0x0120|FORM_ADDR),
 116     AT_language                 = (0x0130|FORM_DATA4),
 117     AT_member                   = (0x0140|FORM_REF),
 118     AT_discr                    = (0x0150|FORM_REF),
 119     AT_discr_value              = (0x0160|FORM_BLOCK2),
 120                                 /* (0x0170|FORM_xxxx) -- reserved */
 121                                 /* (0x0180|FORM_xxxx) -- reserved */
 122     AT_string_length            = (0x0190|FORM_BLOCK2),
 123     AT_common_reference         = (0x01a0|FORM_REF),
 124     AT_comp_dir                 = (0x01b0|FORM_STRING),
 125         AT_const_value_string   = (0x01c0|FORM_STRING),
 126         AT_const_value_data2    = (0x01c0|FORM_DATA2),
 127         AT_const_value_data4    = (0x01c0|FORM_DATA4),
 128         AT_const_value_data8    = (0x01c0|FORM_DATA8),
 129         AT_const_value_block2   = (0x01c0|FORM_BLOCK2),
 130         AT_const_value_block4   = (0x01c0|FORM_BLOCK4),
 131     AT_containing_type          = (0x01d0|FORM_REF),
 132         AT_default_value_addr   = (0x01e0|FORM_ADDR),
 133         AT_default_value_data2  = (0x01e0|FORM_DATA2),
 134         AT_default_value_data4  = (0x01e0|FORM_DATA4),
 135         AT_default_value_data8  = (0x01e0|FORM_DATA8),
 136         AT_default_value_string = (0x01e0|FORM_STRING),
 137     AT_friends                  = (0x01f0|FORM_BLOCK2),
 138     AT_inline                   = (0x0200|FORM_STRING),
 139     AT_is_optional              = (0x0210|FORM_STRING),
 140         AT_lower_bound_ref      = (0x0220|FORM_REF),
 141         AT_lower_bound_data2    = (0x0220|FORM_DATA2),
 142         AT_lower_bound_data4    = (0x0220|FORM_DATA4),
 143         AT_lower_bound_data8    = (0x0220|FORM_DATA8),
 144     AT_private                  = (0x0240|FORM_STRING),
 145     AT_producer                 = (0x0250|FORM_STRING),
 146     AT_program                  = (0x0230|FORM_STRING),
 147     AT_protected                = (0x0260|FORM_STRING),
 148     AT_prototyped               = (0x0270|FORM_STRING),
 149     AT_public                   = (0x0280|FORM_STRING),
 150     AT_pure_virtual             = (0x0290|FORM_STRING),
 151     AT_return_addr              = (0x02a0|FORM_BLOCK2),
 152     AT_abstract_origin          = (0x02b0|FORM_REF),
 153     AT_start_scope              = (0x02c0|FORM_DATA4),
 154     AT_stride_size              = (0x02e0|FORM_DATA4),
 155         AT_upper_bound_ref      = (0x02f0|FORM_REF),
 156         AT_upper_bound_data2    = (0x02f0|FORM_DATA2),
 157         AT_upper_bound_data4    = (0x02f0|FORM_DATA4),
 158         AT_upper_bound_data8    = (0x02f0|FORM_DATA8),
 159     AT_virtual                  = (0x0300|FORM_STRING),
 160
 161     /* GNU extensions.  */
 162
 163     AT_sf_names                 = (0x8000|FORM_DATA4),
 164     AT_src_info                 = (0x8010|FORM_DATA4),
 165     AT_mac_info                 = (0x8020|FORM_DATA4),
 166     AT_src_coords               = (0x8030|FORM_DATA4),
 167     AT_body_begin               = (0x8040|FORM_ADDR),
 168     AT_body_end                 = (0x8050|FORM_ADDR)
 169 };
 170
 171 #define AT_lo_user      0x2000  /* implementation-defined range start */
 172 #define AT_hi_user      0x3ff0  /* implementation-defined range end */
 173
 174 /* Location atom names and codes.  */
 175
 176 enum dwarf_location_atom {
 177     OP_REG      = 0x01,
 178     OP_BASEREG  = 0x02,
 179     OP_ADDR     = 0x03,
 180     OP_CONST    = 0x04,
 181     OP_DEREF2   = 0x05,
 182     OP_DEREF4   = 0x06,
 183     OP_ADD      = 0x07,
 184
 185     /* GNU extensions.  */
 186
 187     OP_MULT     = 0x80
 188 };
 189
 190 #define OP_LO_USER      0x80  /* implementation-defined range start */
 191 #define OP_HI_USER      0xff  /* implementation-defined range end */
 192
 193 /* Fundamental type names and codes.  */
 194
 195 enum dwarf_fundamental_type {
 196     FT_char             = 0x0001,
 197     FT_signed_char      = 0x0002,
 198     FT_unsigned_char    = 0x0003,
 199     FT_short            = 0x0004,
 200     FT_signed_short     = 0x0005,
 201     FT_unsigned_short   = 0x0006,
 202     FT_integer          = 0x0007,
 203     FT_signed_integer   = 0x0008,
 204     FT_unsigned_integer = 0x0009,
 205     FT_long             = 0x000a,
 206     FT_signed_long      = 0x000b,
 207     FT_unsigned_long    = 0x000c,
 208     FT_pointer          = 0x000d,  /* an alias for (void *) */
 209     FT_float            = 0x000e,
 210     FT_dbl_prec_float   = 0x000f,
 211     FT_ext_prec_float   = 0x0010,  /* breaks "classic" svr4 SDB */
 212     FT_complex          = 0x0011,  /* breaks "classic" svr4 SDB */
 213     FT_dbl_prec_complex = 0x0012,  /* breaks "classic" svr4 SDB */
 214                         /* 0x0013 -- reserved */
 215     FT_void             = 0x0014,
 216     FT_boolean          = 0x0015,  /* breaks "classic" svr4 SDB */
 217     FT_ext_prec_complex = 0x0016,  /* breaks "classic" svr4 SDB */
 218     FT_label            = 0x0017,
 219
 220     /* GNU extensions
 221        The low order byte must indicate the size (in bytes) for the type.
 222        All of these types will probably break "classic" svr4 SDB */
 223
 224     FT_long_long        = 0x8008,
 225     FT_signed_long_long = 0x8108,
 226     FT_unsigned_long_long = 0x8208,
 227
 228     FT_int8             = 0x9001,
 229     FT_signed_int8      = 0x9101,
 230     FT_unsigned_int8    = 0x9201,
 231     FT_int16            = 0x9302,
 232     FT_signed_int16     = 0x9402,
 233     FT_unsigned_int16   = 0x9502,
 234     FT_int32            = 0x9604,
 235     FT_signed_int32     = 0x9704,
 236     FT_unsigned_int32   = 0x9804,
 237     FT_int64            = 0x9908,
 238     FT_signed_int64     = 0x9a08,
 239     FT_unsigned_int64   = 0x9b08,
 240     FT_int128           = 0x9c10,
 241     FT_signed_int128    = 0x9d10,
 242     FT_unsigned_int128  = 0x9e10,
 243
 244     FT_real32           = 0xa004,
 245     FT_real64           = 0xa108,
 246     FT_real96           = 0xa20c,
 247     FT_real128          = 0xa310
 248 };
 249
 250 #define FT_lo_user      0x8000  /* implementation-defined range start */
 251 #define FT_hi_user      0xffff  /* implementation defined range end */
 252
 253 /* Type modifier names and codes.  */
 254
 255 enum dwarf_type_modifier {
 256     MOD_pointer_to      = 0x01,
 257     MOD_reference_to    = 0x02,
 258     MOD_const           = 0x03,
 259     MOD_volatile        = 0x04
 260 };
 261
 262 #define MOD_lo_user     0x80  /* implementation-defined range start */
 263 #define MOD_hi_user     0xff  /* implementation-defined range end */
 264
 265 /* Array ordering names and codes.  */
 266
 267 enum dwarf_array_dim_ordering {
 268     ORD_row_major       = 0,
 269     ORD_col_major       = 1
 270 };
 271
 272 /* Array subscript format names and codes.  */
 273
 274 enum dwarf_subscr_data_formats {
 275     FMT_FT_C_C  = 0x0,
 276     FMT_FT_C_X  = 0x1,
 277     FMT_FT_X_C  = 0x2,
 278     FMT_FT_X_X  = 0x3,
 279     FMT_UT_C_C  = 0x4,
 280     FMT_UT_C_X  = 0x5,
 281     FMT_UT_X_C  = 0x6,
 282     FMT_UT_X_X  = 0x7,
 283     FMT_ET      = 0x8
 284 };
 285
 286 /* Derived from above for ease of use.  */
 287
 288 #define FMT_CODE(_FUNDAMENTAL_TYPE_P, _LB_CONST_P, _UB_CONST_P) \
 289  (((_FUNDAMENTAL_TYPE_P) ? 0 : 4)       \
 290   | ((_LB_CONST_P) ? 0 : 2)             \
 291   | ((_UB_CONST_P) ? 0 : 1))
 292
 293 /* Source language names and codes.  */
 294
 295 enum dwarf_source_language {
 296     LANG_C89            = 0x00000001,
 297     LANG_C              = 0x00000002,
 298     LANG_ADA83          = 0x00000003,
 299     LANG_C_PLUS_PLUS    = 0x00000004,
 300     LANG_COBOL74        = 0x00000005,
 301     LANG_COBOL85        = 0x00000006,
 302     LANG_FORTRAN77      = 0x00000007,
 303     LANG_FORTRAN90      = 0x00000008,
 304     LANG_PASCAL83       = 0x00000009,
 305     LANG_MODULA2        = 0x0000000a,
 306     LANG_JAVA           = 0x0000000b
 307 };
 308
 309 #define LANG_lo_user    0x00008000  /* implementation-defined range start */
 310 #define LANG_hi_user    0x0000ffff  /* implementation-defined range end */
 311
 312 /* Names and codes for GNU "macinfo" extension.  */
 313
 314 enum dwarf_macinfo_record_type {
 315     MACINFO_start       = 's',
 316     MACINFO_resume      = 'r',
 317     MACINFO_define      = 'd',
 318     MACINFO_undef       = 'u'
 319 };