dwarf2.h

这个是LINUX下的GDB调度工具的源码

/* Declarations and definitions of codes relating to the DWARF2 symbolic
   debugging information format.
   Copyright (C) 1992, 1993, 1995, 1996, 1997, 1999, 2000, 2001, 2002,
   2003 Free Software Foundation, Inc.

   Written by Gary Funck ([e-mail]) The Ada Joint Program
   Office (AJPO), Florida State University and Silicon Graphics Inc.
   provided support for this effort -- June 21, 1995.

   Derived from the DWARF 1 implementation written by Ron Guilmette
   ([e-mail]), November 1990.

   This file is part of GCC.

   GCC 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 2, or (at your option) any later
   version.

   GCC 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 COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

/* This file is derived from the DWARF specification (a public document)
   Revision 2.0.0 (July 27, 1993) 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.

   This file also now contains definitions from the DWARF 3 specification.  */

/* This file is shared between GCC and GDB, and should not contain
   prototypes.  */

#ifndef _ELF_DWARF2_H
#define _ELF_DWARF2_H

/* Structure found in the .debug_line section.  */
typedef struct
{
  unsigned char li_length          [4];
  unsigned char li_version         [2];
  unsigned char li_prologue_length [4];
  unsigned char li_min_insn_length [1];
  unsigned char li_default_is_stmt [1];
  unsigned char li_line_base       [1];
  unsigned char li_line_range      [1];
  unsigned char li_opcode_base     [1];
}
DWARF2_External_LineInfo;

typedef struct
{
  unsigned long  li_length;
  unsigned short li_version;
  unsigned int   li_prologue_length;
  unsigned char  li_min_insn_length;
  unsigned char  li_default_is_stmt;
  int            li_line_base;
  unsigned char  li_line_range;
  unsigned char  li_opcode_base;
}
DWARF2_Internal_LineInfo;

/* Structure found in .debug_pubnames section.  */
typedef struct
{
  unsigned char pn_length  [4];
  unsigned char pn_version [2];
  unsigned char pn_offset  [4];
  unsigned char pn_size    [4];
}
DWARF2_External_PubNames;

typedef struct
{
  unsigned long  pn_length;
  unsigned short pn_version;
  unsigned long  pn_offset;
  unsigned long  pn_size;
}
DWARF2_Internal_PubNames;

/* Structure found in .debug_info section.  */
typedef struct
{
  unsigned char  cu_length        [4];
  unsigned char  cu_version       [2];
  unsigned char  cu_abbrev_offset [4];
  unsigned char  cu_pointer_size  [1];
}
DWARF2_External_CompUnit;

typedef struct
{
  unsigned long  cu_length;
  unsigned short cu_version;
  unsigned long  cu_abbrev_offset;
  unsigned char  cu_pointer_size;
}
DWARF2_Internal_CompUnit;

typedef struct
{
  unsigned char  ar_length       [4];
  unsigned char  ar_version      [2];
  unsigned char  ar_info_offset  [4];
  unsigned char  ar_pointer_size [1];
  unsigned char  ar_segment_size [1];
}
DWARF2_External_ARange;

typedef struct
{
  unsigned long  ar_length;
  unsigned short ar_version;
  unsigned long  ar_info_offset;
  unsigned char  ar_pointer_size;
  unsigned char  ar_segment_size;
}
DWARF2_Internal_ARange;


/* Tag names and codes.  */
enum dwarf_tag
  {
    DW_TAG_padding = 0x00,
    DW_TAG_array_type = 0x01,
    DW_TAG_class_type = 0x02,
    DW_TAG_entry_point = 0x03,
    DW_TAG_enumeration_type = 0x04,
    DW_TAG_formal_parameter = 0x05,
    DW_TAG_imported_declaration = 0x08,
    DW_TAG_label = 0x0a,
    DW_TAG_lexical_block = 0x0b,
    DW_TAG_member = 0x0d,
    DW_TAG_pointer_type = 0x0f,
    DW_TAG_reference_type = 0x10,
    DW_TAG_compile_unit = 0x11,
    DW_TAG_string_type = 0x12,
    DW_TAG_structure_type = 0x13,
    DW_TAG_subroutine_type = 0x15,
    DW_TAG_typedef = 0x16,
    DW_TAG_union_type = 0x17,
    DW_TAG_unspecified_parameters = 0x18,
    DW_TAG_variant = 0x19,
    DW_TAG_common_block = 0x1a,
    DW_TAG_common_inclusion = 0x1b,
    DW_TAG_inheritance = 0x1c,
    DW_TAG_inlined_subroutine = 0x1d,
    DW_TAG_module = 0x1e,
    DW_TAG_ptr_to_member_type = 0x1f,
    DW_TAG_set_type = 0x20,
    DW_TAG_subrange_type = 0x21,
    DW_TAG_with_stmt = 0x22,
    DW_TAG_access_declaration = 0x23,
    DW_TAG_base_type = 0x24,
    DW_TAG_catch_block = 0x25,
    DW_TAG_const_type = 0x26,
    DW_TAG_constant = 0x27,
    DW_TAG_enumerator = 0x28,
    DW_TAG_file_type = 0x29,
    DW_TAG_friend = 0x2a,
    DW_TAG_namelist = 0x2b,
    DW_TAG_namelist_item = 0x2c,
    DW_TAG_packed_type = 0x2d,
    DW_TAG_subprogram = 0x2e,
    DW_TAG_template_type_param = 0x2f,
    DW_TAG_template_value_param = 0x30,
    DW_TAG_thrown_type = 0x31,
    DW_TAG_try_block = 0x32,
    DW_TAG_variant_part = 0x33,
    DW_TAG_variable = 0x34,
    DW_TAG_volatile_type = 0x35,
    /* DWARF 3.  */
    DW_TAG_dwarf_procedure = 0x36,
    DW_TAG_restrict_type = 0x37,
    DW_TAG_interface_type = 0x38,
    DW_TAG_namespace = 0x39,
    DW_TAG_imported_module = 0x3a,
    DW_TAG_unspecified_type = 0x3b,
    DW_TAG_partial_unit = 0x3c,
    DW_TAG_imported_unit = 0x3d,
    /* SGI/MIPS Extensions.  */
    DW_TAG_MIPS_loop = 0x4081,
    /* HP extensions.  See: ftp://ftp.hp.com/pub/lang/tools/WDB/wdb-4.0.tar.gz .  */
    DW_TAG_HP_array_descriptor = 0x4090,
    /* GNU extensions.  */
    DW_TAG_format_label = 0x4101,	/* For FORTRAN 77 and Fortran 90.  */
    DW_TAG_function_template = 0x4102,	/* For C++.  */
    DW_TAG_class_template = 0x4103,	/* For C++.  */
    DW_TAG_GNU_BINCL = 0x4104,
    DW_TAG_GNU_EINCL = 0x4105,
    /* Extensions for UPC.  See: http://upc.gwu.edu/~upc.  */
    DW_TAG_upc_shared_type = 0x8765,
    DW_TAG_upc_strict_type = 0x8766,
    DW_TAG_upc_relaxed_type = 0x8767,
    /* PGI (STMicroelectronics) extensions.  No documentation available.  */
    DW_TAG_PGI_kanji_type      = 0xA000,
    DW_TAG_PGI_interface_block = 0xA020
  };

#define DW_TAG_lo_user	0x4080
#define DW_TAG_hi_user	0xffff

/* Flag that tells whether entry has a child or not.  */
#define DW_children_no   0
#define	DW_children_yes  1

/* Form names and codes.  */
enum dwarf_form
  {
    DW_FORM_addr = 0x01,
    DW_FORM_block2 = 0x03,
    DW_FORM_block4 = 0x04,
    DW_FORM_data2 = 0x05,
    DW_FORM_data4 = 0x06,
    DW_FORM_data8 = 0x07,
    DW_FORM_string = 0x08,
    DW_FORM_block = 0x09,
    DW_FORM_block1 = 0x0a,
    DW_FORM_data1 = 0x0b,
    DW_FORM_flag = 0x0c,
    DW_FORM_sdata = 0x0d,
    DW_FORM_strp = 0x0e,
    DW_FORM_udata = 0x0f,
    DW_FORM_ref_addr = 0x10,
    DW_FORM_ref1 = 0x11,
    DW_FORM_ref2 = 0x12,
    DW_FORM_ref4 = 0x13,
    DW_FORM_ref8 = 0x14,
    DW_FORM_ref_udata = 0x15,
    DW_FORM_indirect = 0x16
  };

/* Attribute names and codes.  */
enum dwarf_attribute
  {
    DW_AT_sibling = 0x01,
    DW_AT_location = 0x02,
    DW_AT_name = 0x03,
    DW_AT_ordering = 0x09,
    DW_AT_subscr_data = 0x0a,
    DW_AT_byte_size = 0x0b,
    DW_AT_bit_offset = 0x0c,
    DW_AT_bit_size = 0x0d,
    DW_AT_element_list = 0x0f,
    DW_AT_stmt_list = 0x10,
    DW_AT_low_pc = 0x11,
    DW_AT_high_pc = 0x12,
    DW_AT_language = 0x13,
    DW_AT_member = 0x14,
    DW_AT_discr = 0x15,
    DW_AT_discr_value = 0x16,
    DW_AT_visibility = 0x17,
    DW_AT_import = 0x18,
    DW_AT_string_length = 0x19,
    DW_AT_common_reference = 0x1a,
    DW_AT_comp_dir = 0x1b,
    DW_AT_const_value = 0x1c,
    DW_AT_containing_type = 0x1d,
    DW_AT_default_value = 0x1e,
    DW_AT_inline = 0x20,
    DW_AT_is_optional = 0x21,
    DW_AT_lower_bound = 0x22,
    DW_AT_producer = 0x25,
    DW_AT_prototyped = 0x27,
    DW_AT_return_addr = 0x2a,
    DW_AT_start_scope = 0x2c,
    DW_AT_stride_size = 0x2e,
    DW_AT_upper_bound = 0x2f,
    DW_AT_abstract_origin = 0x31,
    DW_AT_accessibility = 0x32,
    DW_AT_address_class = 0x33,
    DW_AT_artificial = 0x34,
    DW_AT_base_types = 0x35,
    DW_AT_calling_convention = 0x36,
    DW_AT_count = 0x37,
    DW_AT_data_member_location = 0x38,
    DW_AT_decl_column = 0x39,
    DW_AT_decl_file = 0x3a,
    DW_AT_decl_line = 0x3b,
    DW_AT_declaration = 0x3c,
    DW_AT_discr_list = 0x3d,
    DW_AT_encoding = 0x3e,
    DW_AT_external = 0x3f,
    DW_AT_frame_base = 0x40,
    DW_AT_friend = 0x41,
    DW_AT_identifier_case = 0x42,
    DW_AT_macro_info = 0x43,
    DW_AT_namelist_items = 0x44,
    DW_AT_priority = 0x45,
    DW_AT_segment = 0x46,
    DW_AT_specification = 0x47,
    DW_AT_static_link = 0x48,
    DW_AT_type = 0x49,
    DW_AT_use_location = 0x4a,
    DW_AT_variable_parameter = 0x4b,
    DW_AT_virtuality = 0x4c,
    DW_AT_vtable_elem_location = 0x4d,
    /* DWARF 3 values.  */
    DW_AT_allocated     = 0x4e,
    DW_AT_associated    = 0x4f,
    DW_AT_data_location = 0x50,
    DW_AT_stride        = 0x51,
    DW_AT_entry_pc      = 0x52,
    DW_AT_use_UTF8      = 0x53,
    DW_AT_extension     = 0x54,
    DW_AT_ranges        = 0x55,
    DW_AT_trampoline    = 0x56,
    DW_AT_call_column   = 0x57,
    DW_AT_call_file     = 0x58,
    DW_AT_call_line     = 0x59,
    /* SGI/MIPS extensions.  */
    DW_AT_MIPS_fde = 0x2001,
    DW_AT_MIPS_loop_begin = 0x2002,
    DW_AT_MIPS_tail_loop_begin = 0x2003,
    DW_AT_MIPS_epilog_begin = 0x2004,
    DW_AT_MIPS_loop_unroll_factor = 0x2005,
    DW_AT_MIPS_software_pipeline_depth = 0x2006,
    DW_AT_MIPS_linkage_name = 0x2007,
    DW_AT_MIPS_stride = 0x2008,
    DW_AT_MIPS_abstract_name = 0x2009,
    DW_AT_MIPS_clone_origin = 0x200a,
    DW_AT_MIPS_has_inlines = 0x200b,
    /* HP extensions.  */
    DW_AT_HP_block_index         = 0x2000,
    DW_AT_HP_unmodifiable        = 0x2001, /* Same as DW_AT_MIPS_fde.  */
    DW_AT_HP_actuals_stmt_list   = 0x2010,
    DW_AT_HP_proc_per_section    = 0x2011,
    DW_AT_HP_raw_data_ptr        = 0x2012,
    DW_AT_HP_pass_by_reference   = 0x2013,
    DW_AT_HP_opt_level           = 0x2014,
    DW_AT_HP_prof_version_id     = 0x2015,
    DW_AT_HP_opt_flags           = 0x2016,
    DW_AT_HP_cold_region_low_pc  = 0x2017,
    DW_AT_HP_cold_region_high_pc = 0x2018,
    DW_AT_HP_all_variables_modifiable = 0x2019,
    DW_AT_HP_linkage_name        = 0x201a,
    DW_AT_HP_prof_flags          = 0x201b,  /* In comp unit of procs_info for -g.  */
    /* GNU extensions.  */
    DW_AT_sf_names   = 0x2101,
    DW_AT_src_info   = 0x2102,
    DW_AT_mac_info   = 0x2103,
    DW_AT_src_coords = 0x2104,
    DW_AT_body_begin = 0x2105,
    DW_AT_body_end   = 0x2106,
    DW_AT_GNU_vector = 0x2107,
    /* VMS extensions.  */
    DW_AT_VMS_rtnbeg_pd_address = 0x2201,
    /* UPC extension.  */
    DW_AT_upc_threads_scaled = 0x3210,
    /* PGI (STMicroelectronics) extensions.  */
    DW_AT_PGI_lbase    = 0x3a00,
    DW_AT_PGI_soffset  = 0x3a01,
    DW_AT_PGI_lstride  = 0x3a02
  };

#define DW_AT_lo_user	0x2000	/* Implementation-defined range start.  */
#define DW_AT_hi_user	0x3ff0	/* Implementation-defined range end.  */

/* Location atom names and codes.  */
enum dwarf_location_atom
  {
    DW_OP_addr = 0x03,
    DW_OP_deref = 0x06,
    DW_OP_const1u = 0x08,
    DW_OP_const1s = 0x09,
    DW_OP_const2u = 0x0a,
    DW_OP_const2s = 0x0b,
    DW_OP_const4u = 0x0c,
    DW_OP_const4s = 0x0d,
    DW_OP_const8u = 0x0e,
    DW_OP_const8s = 0x0f,
    DW_OP_constu = 0x10,
    DW_OP_consts = 0x11,
    DW_OP_dup = 0x12,
    DW_OP_drop = 0x13,
    DW_OP_over = 0x14,
    DW_OP_pick = 0x15,
    DW_OP_swap = 0x16,
    DW_OP_rot = 0x17,
    DW_OP_xderef = 0x18,