gcc/dwarf2.h

   1 /* Declarations and definitions of codes relating to the DWARF2 symbolic
   2    debugging information format.
   3    Copyright (C) 1992, 1993, 1995, 1996 Free Software Foundation, Inc.
   4    Contributed by Gary Funck (gary@intrepid.com).  Derived from the
   5    DWARF 1 implementation written by Ron Guilmette (rfg@monkeys.com).
   6
   7    This file is part of GNU CC.
   8
   9    GNU CC is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2, or (at your option)
  12    any later version.
  13
  14    GNU CC is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GNU CC; see the file COPYING.  If not, write to
  21    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  22
  23 /* This file is derived from the DWARF specification (a public document)
  24    Revision 2.0.0 (July 27, 1993) developed by the UNIX International
  25    Programming Languages Special Interest Group (UI/PLSIG) and distributed
  26    by UNIX International.  Copies of this specification are available from
  27    UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054.  */
  28
  29 /* Tag names and codes.  */
  30
  31 enum dwarf_tag
  32   {
  33     DW_TAG_padding = 0x00,
  34     DW_TAG_array_type = 0x01,
  35     DW_TAG_class_type = 0x02,
  36     DW_TAG_entry_point = 0x03,
  37     DW_TAG_enumeration_type = 0x04,
  38     DW_TAG_formal_parameter = 0x05,
  39     DW_TAG_imported_declaration = 0x08,
  40     DW_TAG_label = 0x0a,
  41     DW_TAG_lexical_block = 0x0b,
  42     DW_TAG_member = 0x0d,
  43     DW_TAG_pointer_type = 0x0f,
  44     DW_TAG_reference_type = 0x10,
  45     DW_TAG_compile_unit = 0x11,
  46     DW_TAG_string_type = 0x12,
  47     DW_TAG_structure_type = 0x13,
  48     DW_TAG_subroutine_type = 0x15,
  49     DW_TAG_typedef = 0x16,
  50     DW_TAG_union_type = 0x17,
  51     DW_TAG_unspecified_parameters = 0x18,
  52     DW_TAG_variant = 0x19,
  53     DW_TAG_common_block = 0x1a,
  54     DW_TAG_common_inclusion = 0x1b,
  55     DW_TAG_inheritance = 0x1c,
  56     DW_TAG_inlined_subroutine = 0x1d,
  57     DW_TAG_module = 0x1e,
  58     DW_TAG_ptr_to_member_type = 0x1f,
  59     DW_TAG_set_type = 0x20,
  60     DW_TAG_subrange_type = 0x21,
  61     DW_TAG_with_stmt = 0x22,
  62     DW_TAG_access_declaration = 0x23,
  63     DW_TAG_base_type = 0x24,
  64     DW_TAG_catch_block = 0x25,
  65     DW_TAG_const_type = 0x26,
  66     DW_TAG_constant = 0x27,
  67     DW_TAG_enumerator = 0x28,
  68     DW_TAG_file_type = 0x29,
  69     DW_TAG_friend = 0x2a,
  70     DW_TAG_namelist = 0x2b,
  71     DW_TAG_namelist_item = 0x2c,
  72     DW_TAG_packed_type = 0x2d,
  73     DW_TAG_subprogram = 0x2e,
  74     DW_TAG_template_type_param = 0x2f,
  75     DW_TAG_template_value_param = 0x30,
  76     DW_TAG_thrown_type = 0x31,
  77     DW_TAG_try_block = 0x32,
  78     DW_TAG_variant_part = 0x33,
  79     DW_TAG_variable = 0x34,
  80     DW_TAG_volatile_type = 0x35,
  81     /* SGI/MIPS Extensions */
  82     DW_TAG_MIPS_loop = 0x4081,
  83     /* GNU extensions */
  84     DW_TAG_format_label = 0x4101,       /* for FORTRAN 77 and Fortran 90 */
  85     DW_TAG_function_template = 0x4102,  /* for C++ */
  86     DW_TAG_class_template = 0x4103      /* for C++ */
  87   };
  88
  89 #define DW_TAG_lo_user  0x4080
  90 #define DW_TAG_hi_user  0xffff
  91
  92 /* flag that tells whether entry has a child or not */
  93 #define DW_children_no   0
  94 #define DW_children_yes  1
  95
  96 /* Form names and codes.  */
  97 enum dwarf_form
  98   {
  99     DW_FORM_addr = 0x01,
 100     DW_FORM_block2 = 0x03,
 101     DW_FORM_block4 = 0x04,
 102     DW_FORM_data2 = 0x05,
 103     DW_FORM_data4 = 0x06,
 104     DW_FORM_data8 = 0x07,
 105     DW_FORM_string = 0x08,
 106     DW_FORM_block = 0x09,
 107     DW_FORM_block1 = 0x0a,
 108     DW_FORM_data1 = 0x0b,
 109     DW_FORM_flag = 0x0c,
 110     DW_FORM_sdata = 0x0d,
 111     DW_FORM_strp = 0x0e,
 112     DW_FORM_udata = 0x0f,
 113     DW_FORM_ref_addr = 0x10,
 114     DW_FORM_ref1 = 0x11,
 115     DW_FORM_ref2 = 0x12,
 116     DW_FORM_ref4 = 0x13,
 117     DW_FORM_ref8 = 0x14,
 118     DW_FORM_ref_udata = 0x15,
 119     DW_FORM_indirect = 0x16
 120   };
 121
 122 /* Attribute names and codes.  */
 123
 124 enum dwarf_attribute
 125   {
 126     DW_AT_sibling = 0x01,
 127     DW_AT_location = 0x02,
 128     DW_AT_name = 0x03,
 129     DW_AT_ordering = 0x09,
 130     DW_AT_subscr_data = 0x0a,
 131     DW_AT_byte_size = 0x0b,
 132     DW_AT_bit_offset = 0x0c,
 133     DW_AT_bit_size = 0x0d,
 134     DW_AT_element_list = 0x0f,
 135     DW_AT_stmt_list = 0x10,
 136     DW_AT_low_pc = 0x11,
 137     DW_AT_high_pc = 0x12,
 138     DW_AT_language = 0x13,
 139     DW_AT_member = 0x14,
 140     DW_AT_discr = 0x15,
 141     DW_AT_discr_value = 0x16,
 142     DW_AT_visibility = 0x17,
 143     DW_AT_import = 0x18,
 144     DW_AT_string_length = 0x19,
 145     DW_AT_common_reference = 0x1a,
 146     DW_AT_comp_dir = 0x1b,
 147     DW_AT_const_value = 0x1c,
 148     DW_AT_containing_type = 0x1d,
 149     DW_AT_default_value = 0x1e,
 150     DW_AT_inline = 0x20,
 151     DW_AT_is_optional = 0x21,
 152     DW_AT_lower_bound = 0x22,
 153     DW_AT_producer = 0x25,
 154     DW_AT_prototyped = 0x27,
 155     DW_AT_return_addr = 0x2a,
 156     DW_AT_start_scope = 0x2c,
 157     DW_AT_stride_size = 0x2e,
 158     DW_AT_upper_bound = 0x2f,
 159     DW_AT_abstract_origin = 0x31,
 160     DW_AT_accessibility = 0x32,
 161     DW_AT_address_class = 0x33,
 162     DW_AT_artificial = 0x34,
 163     DW_AT_base_types = 0x35,
 164     DW_AT_calling_convention = 0x36,
 165     DW_AT_count = 0x37,
 166     DW_AT_data_member_location = 0x38,
 167     DW_AT_decl_column = 0x39,
 168     DW_AT_decl_file = 0x3a,
 169     DW_AT_decl_line = 0x3b,
 170     DW_AT_declaration = 0x3c,
 171     DW_AT_discr_list = 0x3d,
 172     DW_AT_encoding = 0x3e,
 173     DW_AT_external = 0x3f,
 174     DW_AT_frame_base = 0x40,
 175     DW_AT_friend = 0x41,
 176     DW_AT_identifier_case = 0x42,
 177     DW_AT_macro_info = 0x43,
 178     DW_AT_namelist_items = 0x44,
 179     DW_AT_priority = 0x45,
 180     DW_AT_segment = 0x46,
 181     DW_AT_specification = 0x47,
 182     DW_AT_static_link = 0x48,
 183     DW_AT_type = 0x49,
 184     DW_AT_use_location = 0x4a,
 185     DW_AT_variable_parameter = 0x4b,
 186     DW_AT_virtuality = 0x4c,
 187     DW_AT_vtable_elem_location = 0x4d,
 188     /* SGI/MIPS Extensions */
 189     DW_AT_MIPS_fde = 0x2001,
 190     DW_AT_MIPS_loop_begin = 0x2002,
 191     DW_AT_MIPS_tail_loop_begin = 0x2003,
 192     DW_AT_MIPS_epilog_begin = 0x2004,
 193     DW_AT_MIPS_loop_unroll_factor = 0x2005,
 194     DW_AT_MIPS_software_pipeline_depth = 0x2006,
 195     DW_AT_MIPS_linkage_name = 0x2007,
 196     DW_AT_MIPS_stride = 0x2008,
 197     DW_AT_MIPS_abstract_name = 0x2009,
 198     DW_AT_MIPS_clone_origin = 0x200a,
 199     DW_AT_MIPS_has_inlines = 0x200b,
 200     /* GNU extensions.  */
 201     DW_AT_sf_names = 0x2101,
 202     DW_AT_src_info = 0x2102,
 203     DW_AT_mac_info = 0x2103,
 204     DW_AT_src_coords = 0x2104,
 205     DW_AT_body_begin = 0x2105,
 206     DW_AT_body_end = 0x2106
 207   };
 208
 209 #define DW_AT_lo_user   0x2000  /* implementation-defined range start */
 210 #define DW_AT_hi_user   0x3ff0  /* implementation-defined range end */
 211
 212 /* Location atom names and codes.  */
 213
 214 enum dwarf_location_atom
 215   {
 216     DW_OP_addr = 0x03,
 217     DW_OP_deref = 0x06,
 218     DW_OP_const1u = 0x08,
 219     DW_OP_const1s = 0x09,
 220     DW_OP_const2u = 0x0a,
 221     DW_OP_const2s = 0x0b,
 222     DW_OP_const4u = 0x0c,
 223     DW_OP_const4s = 0x0d,
 224     DW_OP_const8u = 0x0e,
 225     DW_OP_const8s = 0x0f,
 226     DW_OP_constu = 0x10,
 227     DW_OP_consts = 0x11,
 228     DW_OP_dup = 0x12,
 229     DW_OP_drop = 0x13,
 230     DW_OP_over = 0x14,
 231     DW_OP_pick = 0x15,
 232     DW_OP_swap = 0x16,
 233     DW_OP_rot = 0x17,
 234     DW_OP_xderef = 0x18,
 235     DW_OP_abs = 0x19,
 236     DW_OP_and = 0x1a,
 237     DW_OP_div = 0x1b,
 238     DW_OP_minus = 0x1c,
 239     DW_OP_mod = 0x1d,
 240     DW_OP_mul = 0x1e,
 241     DW_OP_neg = 0x1f,
 242     DW_OP_not = 0x20,
 243     DW_OP_or = 0x21,
 244     DW_OP_plus = 0x22,
 245     DW_OP_plus_uconst = 0x23,
 246     DW_OP_shl = 0x24,
 247     DW_OP_shr = 0x25,
 248     DW_OP_shra = 0x26,
 249     DW_OP_xor = 0x27,
 250     DW_OP_bra = 0x28,
 251     DW_OP_eq = 0x29,
 252     DW_OP_ge = 0x2a,
 253     DW_OP_gt = 0x2b,
 254     DW_OP_le = 0x2c,
 255     DW_OP_lt = 0x2d,
 256     DW_OP_ne = 0x2e,
 257     DW_OP_skip = 0x2f,
 258     DW_OP_lit0 = 0x30,
 259     DW_OP_lit1 = 0x31,
 260     DW_OP_lit2 = 0x32,
 261     DW_OP_lit3 = 0x33,
 262     DW_OP_lit4 = 0x34,
 263     DW_OP_lit5 = 0x35,
 264     DW_OP_lit6 = 0x36,
 265     DW_OP_lit7 = 0x37,
 266     DW_OP_lit8 = 0x38,
 267     DW_OP_lit9 = 0x39,
 268     DW_OP_lit10 = 0x3a,
 269     DW_OP_lit11 = 0x3b,
 270     DW_OP_lit12 = 0x3c,
 271     DW_OP_lit13 = 0x3d,
 272     DW_OP_lit14 = 0x3e,
 273     DW_OP_lit15 = 0x3f,
 274     DW_OP_lit16 = 0x40,
 275     DW_OP_lit17 = 0x41,
 276     DW_OP_lit18 = 0x42,
 277     DW_OP_lit19 = 0x43,
 278     DW_OP_lit20 = 0x44,
 279     DW_OP_lit21 = 0x45,
 280     DW_OP_lit22 = 0x46,
 281     DW_OP_lit23 = 0x47,
 282     DW_OP_lit24 = 0x48,
 283     DW_OP_lit25 = 0x49,
 284     DW_OP_lit26 = 0x4a,
 285     DW_OP_lit27 = 0x4b,
 286     DW_OP_lit28 = 0x4c,
 287     DW_OP_lit29 = 0x4d,
 288     DW_OP_lit30 = 0x4e,
 289     DW_OP_lit31 = 0x4f,
 290     DW_OP_reg0 = 0x50,
 291     DW_OP_reg1 = 0x51,
 292     DW_OP_reg2 = 0x52,
 293     DW_OP_reg3 = 0x53,
 294     DW_OP_reg4 = 0x54,
 295     DW_OP_reg5 = 0x55,
 296     DW_OP_reg6 = 0x56,
 297     DW_OP_reg7 = 0x57,
 298     DW_OP_reg8 = 0x58,
 299     DW_OP_reg9 = 0x59,
 300     DW_OP_reg10 = 0x5a,
 301     DW_OP_reg11 = 0x5b,
 302     DW_OP_reg12 = 0x5c,
 303     DW_OP_reg13 = 0x5d,
 304     DW_OP_reg14 = 0x5e,
 305     DW_OP_reg15 = 0x5f,
 306     DW_OP_reg16 = 0x60,
 307     DW_OP_reg17 = 0x61,
 308     DW_OP_reg18 = 0x62,
 309     DW_OP_reg19 = 0x63,
 310     DW_OP_reg20 = 0x64,
 311     DW_OP_reg21 = 0x65,
 312     DW_OP_reg22 = 0x66,
 313     DW_OP_reg23 = 0x67,
 314     DW_OP_reg24 = 0x68,
 315     DW_OP_reg25 = 0x69,
 316     DW_OP_reg26 = 0x6a,
 317     DW_OP_reg27 = 0x6b,
 318     DW_OP_reg28 = 0x6c,
 319     DW_OP_reg29 = 0x6d,
 320     DW_OP_reg30 = 0x6e,
 321     DW_OP_reg31 = 0x6f,
 322     DW_OP_breg0 = 0x70,
 323     DW_OP_breg1 = 0x71,
 324     DW_OP_breg2 = 0x72,
 325     DW_OP_breg3 = 0x73,
 326     DW_OP_breg4 = 0x74,
 327     DW_OP_breg5 = 0x75,
 328     DW_OP_breg6 = 0x76,
 329     DW_OP_breg7 = 0x77,
 330     DW_OP_breg8 = 0x78,
 331     DW_OP_breg9 = 0x79,
 332     DW_OP_breg10 = 0x7a,
 333     DW_OP_breg11 = 0x7b,
 334     DW_OP_breg12 = 0x7c,
 335     DW_OP_breg13 = 0x7d,
 336     DW_OP_breg14 = 0x7e,
 337     DW_OP_breg15 = 0x7f,
 338     DW_OP_breg16 = 0x80,
 339     DW_OP_breg17 = 0x81,
 340     DW_OP_breg18 = 0x82,
 341     DW_OP_breg19 = 0x83,
 342     DW_OP_breg20 = 0x84,
 343     DW_OP_breg21 = 0x85,
 344     DW_OP_breg22 = 0x86,
 345     DW_OP_breg23 = 0x87,
 346     DW_OP_breg24 = 0x88,
 347     DW_OP_breg25 = 0x89,
 348     DW_OP_breg26 = 0x8a,
 349     DW_OP_breg27 = 0x8b,
 350     DW_OP_breg28 = 0x8c,
 351     DW_OP_breg29 = 0x8d,
 352     DW_OP_breg30 = 0x8e,
 353     DW_OP_breg31 = 0x8f,
 354     DW_OP_regx = 0x90,
 355     DW_OP_fbreg = 0x91,
 356     DW_OP_bregx = 0x92,
 357     DW_OP_piece = 0x93,
 358     DW_OP_deref_size = 0x94,
 359     DW_OP_xderef_size = 0x95,
 360     DW_OP_nop = 0x96
 361   };
 362
 363 #define DW_OP_lo_user   0x80    /* implementation-defined range start */
 364 #define DW_OP_hi_user   0xff    /* implementation-defined range end */
 365
 366 /* Type encodings.  */
 367
 368 enum dwarf_type
 369   {
 370     DW_ATE_void = 0x0,
 371     DW_ATE_address = 0x1,
 372     DW_ATE_boolean = 0x2,
 373     DW_ATE_complex_float = 0x3,
 374     DW_ATE_float = 0x4,
 375     DW_ATE_signed = 0x5,
 376     DW_ATE_signed_char = 0x6,
 377     DW_ATE_unsigned = 0x7,
 378     DW_ATE_unsigned_char = 0x8
 379   };
 380
 381 #define DW_ATE_lo_user 0x80
 382 #define DW_ATE_hi_user 0xff
 383
 384 /* Array ordering names and codes.  */
 385 enum dwarf_array_dim_ordering
 386   {
 387     DW_ORD_row_major = 0,
 388     DW_ORD_col_major = 1
 389   };
 390
 391 /* access attribute */
 392 enum dwarf_access_attribute
 393   {
 394     DW_ACCESS_public = 1,
 395     DW_ACCESS_protected = 2,
 396     DW_ACCESS_private = 3
 397   };
 398
 399 /* visibility */
 400 enum dwarf_visibility_attribute
 401   {
 402     DW_VIS_local = 1,
 403     DW_VIS_exported = 2,
 404     DW_VIS_qualified = 3
 405   };
 406
 407 /* virtuality */
 408 enum dwarf_virtuality_attribute
 409   {
 410     DW_VIRTUALITY_none = 0,
 411     DW_VIRTUALITY_virtual = 1,
 412     DW_VIRTUALITY_pure_virtual = 2
 413   };
 414
 415 /* case sensitivity */
 416 enum dwarf_id_case
 417   {
 418     DW_ID_case_sensitive = 0,
 419     DW_ID_up_case = 1,
 420     DW_ID_down_case = 2,
 421     DW_ID_case_insensitive = 3
 422   };
 423
 424 /* calling convention */
 425 enum dwarf_calling_convention
 426   {
 427     DW_CC_normal = 0x1,
 428     DW_CC_program = 0x2,
 429     DW_CC_nocall = 0x3
 430   };
 431
 432 #define DW_CC_lo_user 0x40
 433 #define DW_CC_hi_user 0xff
 434
 435 /* inline attribute */
 436 enum dwarf_inline_attribute
 437   {
 438     DW_INL_not_inlined = 0,
 439     DW_INL_inlined = 1,
 440     DW_INL_declared_not_inlined = 2,
 441     DW_INL_declared_inlined = 3
 442   };
 443
 444 /* descriminant lists */
 445 enum dwarf_descrim_list
 446   {
 447     DW_DSC_label = 0,
 448     DW_DSC_range = 1
 449   };
 450
 451 /* line number opcodes */
 452 enum dwarf_line_number_ops
 453   {
 454     DW_LNS_extended_op = 0,
 455     DW_LNS_copy = 1,
 456     DW_LNS_advance_pc = 2,
 457     DW_LNS_advance_line = 3,
 458     DW_LNS_set_file = 4,
 459     DW_LNS_set_column = 5,
 460     DW_LNS_negate_stmt = 6,
 461     DW_LNS_set_basic_block = 7,
 462     DW_LNS_const_add_pc = 8,
 463     DW_LNS_fixed_advance_pc = 9
 464   };
 465
 466 /* line number extended opcodes */
 467 enum dwarf_line_number_x_ops
 468   {
 469     DW_LNE_end_sequence = 1,
 470     DW_LNE_set_address = 2,
 471     DW_LNE_define_file = 3
 472   };
 473
 474 /* call frame information */
 475 enum dwarf_call_frame_info
 476   {
 477     DW_CFA_advance_loc = 0x40,
 478     DW_CFA_offset = 0x80,
 479     DW_CFA_restore = 0xc0,
 480     DW_CFA_nop = 0x00,
 481     DW_CFA_set_loc = 0x01,
 482     DW_CFA_advance_loc1 = 0x02,
 483     DW_CFA_advance_loc2 = 0x03,
 484     DW_CFA_advance_loc4 = 0x04,
 485     DW_CFA_offset_extended = 0x05,
 486     DW_CFA_restore_extended = 0x06,
 487     DW_CFA_undefined = 0x07,
 488     DW_CFA_same_value = 0x08,
 489     DW_CFA_register = 0x09,
 490     DW_CFA_remember_state = 0x0a,
 491     DW_CFA_restore_state = 0x0b,
 492     DW_CFA_def_cfa = 0x0c,
 493     DW_CFA_def_cfa_register = 0x0d,
 494     DW_CFA_def_cfa_offset = 0x0e,
 495     /* SGI/MIPS specific */
 496     DW_CFA_MIPS_advance_loc8 = 0x1d
 497   };
 498
 499 #define DW_CIE_ID         0xffffffff
 500 #define DW_CIE_VERSION    1
 501
 502 #define DW_CFA_extended   0
 503 #define DW_CFA_low_user   0x1c
 504 #define DW_CFA_high_user  0x3f
 505
 506 #define DW_CHILDREN_no               0x00
 507 #define DW_CHILDREN_yes              0x01
 508
 509 #define DW_ADDR_none            0
 510
 511 /* Source language names and codes.  */
 512
 513 enum dwarf_source_language
 514   {
 515     DW_LANG_C89 = 0x0001,
 516     DW_LANG_C = 0x0002,
 517     DW_LANG_Ada83 = 0x0003,
 518     DW_LANG_C_plus_plus = 0x0004,
 519     DW_LANG_Cobol74 = 0x0005,
 520     DW_LANG_Cobol85 = 0x0006,
 521     DW_LANG_Fortran77 = 0x0007,
 522     DW_LANG_Fortran90 = 0x0008,
 523     DW_LANG_Pascal83 = 0x0009,
 524     DW_LANG_Modula2 = 0x000a,
 525     DW_LANG_Mips_Assembler = 0x8001
 526   };
 527
 528
 529 #define DW_LANG_lo_user 0x8000  /* implementation-defined range start */
 530 #define DW_LANG_hi_user 0xffff  /* implementation-defined range start */
 531
 532 /* Names and codes for macro information.  */
 533
 534 enum dwarf_macinfo_record_type
 535   {
 536     DW_MACINFO_define = 1,
 537     DW_MACINFO_undef = 2,
 538     DW_MACINFO_start_file = 3,
 539     DW_MACINFO_end_file = 4,
 540     DW_MACINFO_vendor_ext = 255
 541   };