DWARF_GET_FORM_CLASS(3)

DWARF_GET_FORM_CLASS(3) | Library Functions Manual | DWARF_GET_FORM_CLASS(3)

# NAME

dwarf_get_form_class — retrieve the form class of an attribute

# LIBRARY

DWARF Access Library (libdwarf, -ldwarf)

# SYNOPSIS

#include <libdwarf.h>
enum Dwarf_Form_Class
dwarf_get_form_class(Dwarf_Half dwversion, Dwarf_Half attr, Dwarf_Half offset_size, Dwarf_Half form);

# DESCRIPTION

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.

# SEE ALSO

dwarf(3), dwarf_attr(3), dwarf_whatattr(3), dwarf_whatform(3)

June 26, 2011 | NetBSD 8.0