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dwarf_get_form_class(3) [freebsd man page]

DWARF_GET_FORM_CLASS(3) 				   BSD Library Functions Manual 				   DWARF_GET_FORM_CLASS(3)

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) BSD
June 26, 2011 BSD

Check Out this Related Man Page

DWARF_HASFORM(3)					   BSD Library Functions Manual 					  DWARF_HASFORM(3)

dwarf_hasform, dwarf_whatform, dwarf_whatform_direct -- query attribute forms LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_hasform(Dwarf_Attribute attr, Dwarf_Half form, Dwarf_Bool *ret, Dwarf_Error *err); int dwarf_whatform(Dwarf_Attribute attr, Dwarf_Half *retform, Dwarf_Error *err); int dwarf_whatform_direct(Dwarf_Attribute attr, Dwarf_Half *retform, Dwarf_Error *err); DESCRIPTION
Function dwarf_hasform() indicates whether the DWARF attribute denoted by argument attr has the attribute form specified by argument form. If the attribute has the specified form, then argument ret is set to a non-zero value, otherwise it is set to zero. If argument err is non- NULL, it will be used to return an error descriptor in case of an error. Function dwarf_whatform() sets the location specified by argument retform to the attribute form code for the DWARF attribute referenced by argument attr. If the attribute referenced by argument attr has an indirect form attribute, this function will return the final form for the attribute. If argument err is non-NULL, it will be used to return an error descriptor in case of an error. Function dwarf_whatform_direct() sets the location specified by argument retform to the attribute form code for the DWARF attribute refer- enced by argument attr. If the form is an indirect form, the function sets the location specified by argument retform to DW_FORM_indirect. If argument err is non-NULL, it will be used to return an error descriptor in case of an error. RETURN VALUES
These functions return DW_DLV_OK on success. In case of an error, these functions return DW_DLV_ERR and set argument err. ERRORS
These functions may fail with the following errors: [DW_DLE_ARGUMENT] Any of the arguments attr, ret, or retform was NULL. SEE ALSO
dwarf(3), dwarf_attr(3), dwarf_hasattr(3) BSD
May 22, 2010 BSD

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