Manual Pages  — DWARF_GET_FORM_CLASS

dwarf_get_form_class – retrieve the form class of an attribute

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO

DWARF Access Library (libdwarf, -ldwarf)

#include <libdwarf.h>

enum Dwarf_Form_Class
dwarf_get_form_class(Dwarf_Half dwversion, Dwarf_Half attr, Dwarf_Half offset_size, Dwarf_Half form);

Function dwarf_get_form_class() returns the class of the form of a DWARF attribute.

Argument dwversion should specify the version number of DWARF specification to use: 2 for DWARF2, 3 for DWARF3 and 4 for DWARF4.

Argument attr should hold the attribute code of the attribute, i.e., one of the DW_AT_* values defined in <libdwarf.h>.

Argument offset_size should hold the size of a DWARF offset for the relevant compilation unit.

Argument form should hold the form code of the attribute.

On success, function dwarf_get_form_class() returns the form class code, which is one of the DW_FORM_CLASS_* contants defined in header file <libdwarf.h>. If the function was not able to determine the form class of the attribute, it returns the special form class code DW_FORM_CLASS_UNKNOWN.

Function dwarf_get_form_class() does not return an error.