DWARF_DIEOFFSET(3)					   BSD Library Functions Manual 					DWARF_DIEOFFSET(3)

NAME

     dwarf_die_CU_offset, dwarf_die_CU_offset_range, dwarf_dieoffset, dwarf_get_cu_die_offset_given_cu_header_offset,
     dwarf_get_cu_die_offset_given_cu_header_offset_b -- return offsets of DWARF debugging information entries

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     int
     dwarf_die_CU_offset(Dwarf_Die die, Dwarf_Off *ret_offset, Dwarf_Error *err);

     int
     dwarf_die_CU_offset_range(Dwarf_Die die, Dwarf_Off *cu_offset, Dwarf_Off *cu_length, Dwarf_Error *err);

     int
     dwarf_dieoffset(Dwarf_Die die, Dwarf_Off *ret_offset, Dwarf_Error *err);

     int
     dwarf_get_cu_die_offset_given_cu_header_offset(Dwarf_Debug dbg, Dwarf_Off in_cu_header_offset, Dwarf_Off *out_cu_die_offset,
	 Dwarf_Error *err);

     int
     dwarf_get_cu_die_offset_given_cu_header_offset_b(Dwarf_Debug dbg, Dwarf_Off in_cu_header_offset, Dwarf_Bool is_info,
	 Dwarf_Off *out_cu_die_offset, Dwarf_Error *err);

DESCRIPTION

     These functions are used to retrieve offsets for DWARF debugging information entries.

     Function dwarf_die_CU_offset() returns the offset of the debugging information entry referenced by argument die relative to the start of its
     containing compilation unit.  Argument ret_offset should point to the location that is to hold the returned offset.  If argument err is non-
     NULL, it will be used to return an error descriptor in case of an error.

     Function dwarf_die_CU_offset_range() returns the section-relative offset and length of the compilation unit containing the debugging informa-
     tion entry referenced by argument die.  Argument cu_offset should point to a location that will hold the returned offset.	Argument cu_length
     should point to a location that will hold the returned length of the compilation unit.  If argument err is non-NULL, it will be used to
     return an error descriptor in case of an error.

     Function dwarf_dieoffset() retrieves the section-relative offset of the debugging information entry referenced by argument die.  Argument
     ret_offset should point to a location that is to hold the returned section-relative offset.  If argument err is non-NULL, it will be used to
     return an error descriptor in case of an error.

     Function dwarf_get_cu_die_offset_given_cu_header_offset() returns the offset for the first debugging information entry for a compilation
     unit, given an offset to the header of the compilation unit.  Argument dbg should reference a valid debugging context allocated using
     dwarf_init(3).  Argument in_cu_header_offset contains the offset to the start of a compilation unit.  Argument out_cu_die_offset points to a
     location that will hold the returned offset.  If argument err is non-NULL, it will be used to return an error descriptor in case of an error.

     Function dwarf_get_cu_die_offset_given_cu_header_offset_b() behaves identically to the function
     dwarf_get_cu_die_offset_given_cu_header_offset() when the argument is_info is non-zero.  When the argument is_info is zero, function
     dwarf_get_cu_die_offset_given_cu_header_offset_b() returns the offset for the first debugging information entry for a type unit, given an
     offset to the header of the type unit in argument in_cu_header_offset.  Argument out_cu_die_offset points to a location that will hold the
     returned offset.  If the argument err is non-NULL, it will be used to return an error descriptor in case of an error.

RETURN VALUES

     On success, these functions return DW_DLV_OK.  In case of an error, these functions return DW_DLV_ERROR and set argument err.

     Function dwarf_get_cu_die_offset_given_cu_header_offset() and dwarf_get_cu_die_offset_given_cu_header_offset_b() returns DW_DLV_NO_ENTRY and
     sets argument err if there is no compilation or type unit located at the offset specified in argument in_cu_header_offset.

ERRORS

     These functions may fail with the following errors:

     [DW_DLE_ARGUMENT]	One of the arguments cu_length, cu_offset, dbg, die, out_cu_die_offset or ret_offset was NULL.

     [DW_DLE_NO_ENTRY]	Argument in_cu_header_offset specified an unknown offset.

SEE ALSO

     dwarf(3), dwarf_next_cu_header(3), dwarf_offdie(3), dwarf_offdie_b(3)

BSD
								 December 21, 2014							       BSD