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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 informa-
     tion entries.

     Function dwarf_die_CU_offset() returns the	offset of the debugging	infor-
     mation entry referenced by	argument die relative to the start of its con-
     taining compilation unit.	Argument ret_offset should point to the	loca-
     tion 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 information
     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	sec-
     tion-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	compi-
     lation 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 iden-
     tically 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 off-
			set.

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

BSD			       December	21, 2014			   BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO

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