source: trunk/libs/newlib/src/include/elf/dwarf.h @ 498

/* Declarations and definitions of codes relating to the DWARF symbolic
   debugging information format.

   Written by Ron Guilmette (rfg@netcom.com)

   Copyright 1992, 1993, 1995, 1999, 2005, 2010 Free Software Foundation, Inc.

   This file is part of both GCC and the BFD library.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GCC; see the file COPYING3.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

/* This file is derived from the DWARF specification (a public document)
   Revision 1.0.1 (April 8, 1992) developed by the UNIX International
   Programming Languages Special Interest Group (UI/PLSIG) and distributed
   by UNIX International.  Copies of this specification are available from
   UNIX International, 20 Waterview Boulevard, Parsippany, NJ, 07054.  */

#ifndef _ELF_DWARF_H
#define _ELF_DWARF_H

/* Tag names and codes.  */

enum dwarf_tag {
    TAG_padding                 = 0x0000,
    TAG_array_type              = 0x0001,
    TAG_class_type              = 0x0002,
    TAG_entry_point             = 0x0003,
    TAG_enumeration_type        = 0x0004,
    TAG_formal_parameter        = 0x0005,
    TAG_global_subroutine       = 0x0006,
    TAG_global_variable         = 0x0007,
                                /* 0x0008 -- reserved */
                                /* 0x0009 -- reserved */
    TAG_label                   = 0x000a,
    TAG_lexical_block           = 0x000b,
    TAG_local_variable          = 0x000c,
    TAG_member                  = 0x000d,
                                /* 0x000e -- reserved */
    TAG_pointer_type            = 0x000f,
    TAG_reference_type          = 0x0010,
    TAG_compile_unit            = 0x0011,
    TAG_string_type             = 0x0012,
    TAG_structure_type          = 0x0013,
    TAG_subroutine              = 0x0014,
    TAG_subroutine_type         = 0x0015,
    TAG_typedef                 = 0x0016,
    TAG_union_type              = 0x0017,
    TAG_unspecified_parameters  = 0x0018,
    TAG_variant                 = 0x0019,
    TAG_common_block            = 0x001a,
    TAG_common_inclusion        = 0x001b,
    TAG_inheritance             = 0x001c,
    TAG_inlined_subroutine      = 0x001d,
    TAG_module                  = 0x001e,
    TAG_ptr_to_member_type      = 0x001f,
    TAG_set_type                = 0x0020,
    TAG_subrange_type           = 0x0021,
    TAG_with_stmt               = 0x0022,

    /* GNU extensions */

    TAG_format_label            = 0x8000,  /* for FORTRAN 77 and Fortran 90 */
    TAG_namelist                = 0x8001,  /* For Fortran 90 */
    TAG_function_template       = 0x8002,  /* for C++ */
    TAG_class_template          = 0x8003   /* for C++ */
};

#define TAG_lo_user     0x8000  /* implementation-defined range start */
#define TAG_hi_user     0xffff  /* implementation-defined range end */
#define TAG_source_file TAG_compile_unit  /* for backward compatibility */

/* Form names and codes.  */

enum dwarf_form {
    FORM_ADDR   = 0x1,
    FORM_REF    = 0x2,
    FORM_BLOCK2 = 0x3,
    FORM_BLOCK4 = 0x4,
    FORM_DATA2  = 0x5,
    FORM_DATA4  = 0x6,
    FORM_DATA8  = 0x7,
    FORM_STRING = 0x8
};

/* Attribute names and codes.  */

enum dwarf_attribute {
    AT_sibling                  = (0x0010|FORM_REF),
    AT_location                 = (0x0020|FORM_BLOCK2),
    AT_name                     = (0x0030|FORM_STRING),
    AT_fund_type                = (0x0050|FORM_DATA2),
    AT_mod_fund_type            = (0x0060|FORM_BLOCK2),
    AT_user_def_type            = (0x0070|FORM_REF),
    AT_mod_u_d_type             = (0x0080|FORM_BLOCK2),
    AT_ordering                 = (0x0090|FORM_DATA2),
    AT_subscr_data              = (0x00a0|FORM_BLOCK2),
    AT_byte_size                = (0x00b0|FORM_DATA4),
    AT_bit_offset               = (0x00c0|FORM_DATA2),
    AT_bit_size                 = (0x00d0|FORM_DATA4),
                                /* (0x00e0|FORM_xxxx) -- reserved */
    AT_element_list             = (0x00f0|FORM_BLOCK4),
    AT_stmt_list                = (0x0100|FORM_DATA4),
    AT_low_pc                   = (0x0110|FORM_ADDR),
    AT_high_pc                  = (0x0120|FORM_ADDR),
    AT_language                 = (0x0130|FORM_DATA4),
    AT_member                   = (0x0140|FORM_REF),
    AT_discr                    = (0x0150|FORM_REF),
    AT_discr_value              = (0x0160|FORM_BLOCK2),
                                /* (0x0170|FORM_xxxx) -- reserved */
                                /* (0x0180|FORM_xxxx) -- reserved */
    AT_string_length            = (0x0190|FORM_BLOCK2),
    AT_common_reference         = (0x01a0|FORM_REF),
    AT_comp_dir                 = (0x01b0|FORM_STRING),
        AT_const_value_string   = (0x01c0|FORM_STRING),
        AT_const_value_data2    = (0x01c0|FORM_DATA2),
        AT_const_value_data4    = (0x01c0|FORM_DATA4),
        AT_const_value_data8    = (0x01c0|FORM_DATA8),
        AT_const_value_block2   = (0x01c0|FORM_BLOCK2),
        AT_const_value_block4   = (0x01c0|FORM_BLOCK4),
    AT_containing_type          = (0x01d0|FORM_REF),
        AT_default_value_addr   = (0x01e0|FORM_ADDR),
        AT_default_value_data2  = (0x01e0|FORM_DATA2),
        AT_default_value_data4  = (0x01e0|FORM_DATA4),
        AT_default_value_data8  = (0x01e0|FORM_DATA8),
        AT_default_value_string = (0x01e0|FORM_STRING),
    AT_friends                  = (0x01f0|FORM_BLOCK2),
    AT_inline                   = (0x0200|FORM_STRING),
    AT_is_optional              = (0x0210|FORM_STRING),
        AT_lower_bound_ref      = (0x0220|FORM_REF),
        AT_lower_bound_data2    = (0x0220|FORM_DATA2),
        AT_lower_bound_data4    = (0x0220|FORM_DATA4),
        AT_lower_bound_data8    = (0x0220|FORM_DATA8),
    AT_private                  = (0x0240|FORM_STRING),
    AT_producer                 = (0x0250|FORM_STRING),
    AT_program                  = (0x0230|FORM_STRING),
    AT_protected                = (0x0260|FORM_STRING),
    AT_prototyped               = (0x0270|FORM_STRING),
    AT_public                   = (0x0280|FORM_STRING),
    AT_pure_virtual             = (0x0290|FORM_STRING),
    AT_return_addr              = (0x02a0|FORM_BLOCK2),
    AT_abstract_origin          = (0x02b0|FORM_REF),
    AT_start_scope              = (0x02c0|FORM_DATA4),
    AT_stride_size              = (0x02e0|FORM_DATA4),
        AT_upper_bound_ref      = (0x02f0|FORM_REF),
        AT_upper_bound_data2    = (0x02f0|FORM_DATA2),
        AT_upper_bound_data4    = (0x02f0|FORM_DATA4),
        AT_upper_bound_data8    = (0x02f0|FORM_DATA8),
    AT_virtual                  = (0x0300|FORM_STRING),

    /* GNU extensions.  */

    AT_sf_names                 = (0x8000|FORM_DATA4),
    AT_src_info                 = (0x8010|FORM_DATA4),
    AT_mac_info                 = (0x8020|FORM_DATA4),
    AT_src_coords               = (0x8030|FORM_DATA4),
    AT_body_begin               = (0x8040|FORM_ADDR),
    AT_body_end                 = (0x8050|FORM_ADDR)
};

#define AT_lo_user      0x2000  /* implementation-defined range start */
#define AT_hi_user      0x3ff0  /* implementation-defined range end */

/* Location atom names and codes.  */

enum dwarf_location_atom {
    OP_REG      = 0x01,
    OP_BASEREG  = 0x02,
    OP_ADDR     = 0x03,
    OP_CONST    = 0x04,
    OP_DEREF2   = 0x05,
    OP_DEREF4   = 0x06,
    OP_ADD      = 0x07,

    /* GNU extensions.  */

    OP_MULT     = 0x80
};

#define OP_LO_USER      0x80  /* implementation-defined range start */
#define OP_HI_USER      0xff  /* implementation-defined range end */

/* Fundamental type names and codes.  */

enum dwarf_fundamental_type {
    FT_char             = 0x0001,
    FT_signed_char      = 0x0002,
    FT_unsigned_char    = 0x0003,
    FT_short            = 0x0004,
    FT_signed_short     = 0x0005,
    FT_unsigned_short   = 0x0006,
    FT_integer          = 0x0007,
    FT_signed_integer   = 0x0008,
    FT_unsigned_integer = 0x0009,
    FT_long             = 0x000a,
    FT_signed_long      = 0x000b,
    FT_unsigned_long    = 0x000c,
    FT_pointer          = 0x000d,  /* an alias for (void *) */
    FT_float            = 0x000e,
    FT_dbl_prec_float   = 0x000f,
    FT_ext_prec_float   = 0x0010,  /* breaks "classic" svr4 SDB */
    FT_complex          = 0x0011,  /* breaks "classic" svr4 SDB */
    FT_dbl_prec_complex = 0x0012,  /* breaks "classic" svr4 SDB */
                        /* 0x0013 -- reserved */
    FT_void             = 0x0014,
    FT_boolean          = 0x0015,  /* breaks "classic" svr4 SDB */
    FT_ext_prec_complex = 0x0016,  /* breaks "classic" svr4 SDB */
    FT_label            = 0x0017,
  
    /* GNU extensions
       The low order byte must indicate the size (in bytes) for the type.
       All of these types will probably break "classic" svr4 SDB.  */

    FT_long_long        = 0x8008,
    FT_signed_long_long = 0x8108,
    FT_unsigned_long_long = 0x8208,

    FT_int8             = 0x9001,
    FT_signed_int8      = 0x9101,
    FT_unsigned_int8    = 0x9201,
    FT_int16            = 0x9302,
    FT_signed_int16     = 0x9402,
    FT_unsigned_int16   = 0x9502,
    FT_int32            = 0x9604,
    FT_signed_int32     = 0x9704,
    FT_unsigned_int32   = 0x9804,
    FT_int64            = 0x9908,
    FT_signed_int64     = 0x9a08,
    FT_unsigned_int64   = 0x9b08,
    FT_int128           = 0x9c10,
    FT_signed_int128    = 0x9d10,
    FT_unsigned_int128  = 0x9e10,

    FT_real32           = 0xa004,
    FT_real64           = 0xa108,
    FT_real96           = 0xa20c,
    FT_real128          = 0xa310
};

#define FT_lo_user      0x8000  /* implementation-defined range start */
#define FT_hi_user      0xffff  /* implementation defined range end */

/* Type modifier names and codes.  */

enum dwarf_type_modifier {
    MOD_pointer_to      = 0x01,
    MOD_reference_to    = 0x02,
    MOD_const           = 0x03,
    MOD_volatile        = 0x04
};

#define MOD_lo_user     0x80  /* implementation-defined range start */
#define MOD_hi_user     0xff  /* implementation-defined range end */

/* Array ordering names and codes.  */

enum dwarf_array_dim_ordering {
    ORD_row_major       = 0,
    ORD_col_major       = 1
};

/* Array subscript format names and codes.  */

enum dwarf_subscr_data_formats {
    FMT_FT_C_C  = 0x0,
    FMT_FT_C_X  = 0x1,
    FMT_FT_X_C  = 0x2,
    FMT_FT_X_X  = 0x3,
    FMT_UT_C_C  = 0x4,
    FMT_UT_C_X  = 0x5,
    FMT_UT_X_C  = 0x6,
    FMT_UT_X_X  = 0x7,
    FMT_ET      = 0x8
};

/* Derived from above for ease of use.  */

#define FMT_CODE(_FUNDAMENTAL_TYPE_P, _LB_CONST_P, _UB_CONST_P) \
 (((_FUNDAMENTAL_TYPE_P) ? 0 : 4)       \
  | ((_LB_CONST_P) ? 0 : 2)             \
  | ((_UB_CONST_P) ? 0 : 1))

/* Source language names and codes.  */

enum dwarf_source_language {
    LANG_C89            = 0x00000001,
    LANG_C              = 0x00000002,
    LANG_ADA83          = 0x00000003,
    LANG_C_PLUS_PLUS    = 0x00000004,
    LANG_COBOL74        = 0x00000005,
    LANG_COBOL85        = 0x00000006,
    LANG_FORTRAN77      = 0x00000007,
    LANG_FORTRAN90      = 0x00000008,
    LANG_PASCAL83       = 0x00000009,
    LANG_MODULA2        = 0x0000000a,
    LANG_JAVA           = 0x0000000b
};

#define LANG_lo_user    0x00008000  /* implementation-defined range start */
#define LANG_hi_user    0x0000ffff  /* implementation-defined range end */

/* Names and codes for GNU "macinfo" extension.  */

enum dwarf_macinfo_record_type {
    MACINFO_start       = 's',
    MACINFO_resume      = 'r',
    MACINFO_define      = 'd',
    MACINFO_undef       = 'u'
};

#endif /* _ELF_DWARF_H */