dwarf_get_form_class3
Retrieve the form class of an attribute
Usage
#include <libdwarf.h>
enum Dwarf_Form_Class
dwarf_get_form_class(Dwarf_Half dwversion, Dwarf_Half attr, Dwarf_Half offset_size, Dwarf_Half form);
Library
library “libdwarf”
Overview
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.
Return values
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.
Errors
Function dwarf_get_form_class() does not return an error.
Releases
25 releases since FreeBSD 11.0-RELEASE; the text changed 1 time.