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DWARF_FORMUDATA(3) FreeBSD Library Functions Manual DWARF_FORMUDATA(3)
NAME
dwarf_formudata, dwarf_formsdata - return the value of a CONSTANT class
attribute
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h>
int
dwarf_formudata(Dwarf_Attribute attr, Dwarf_Unsigned *ret,
Dwarf_Error *err);
int
dwarf_formsdata(Dwarf_Attribute attr, Dwarf_Signed *ret,
Dwarf_Error *err);
DESCRIPTION
These functions return the value associated with a DWARF attribute
describing a constant.
Function dwarf_formudata() sets the location pointed to by argument ret
to the value of the attribute referenced by argument attr, treating the
value as an unsigned quantity. Argument attr must have one of the
following forms: DW_FORM_data1, DW_FORM_data2, DW_FORM_data4,
DW_FORM_data8 and DW_FORM_udata.
Function dwarf_formsdata() sets the location pointed to by argument ret
to the value of the attribute referenced by argument attr, appropriately
sign extended. Argument attr must have one of the following forms:
DW_FORM_data1, DW_FORM_data2, DW_FORM_data4, DW_FORM_data8 and
DW_FORM_sdata.
If argument err is not 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, they
return DW_DLV_ERROR and set argument err.
ERRORS
These functions may fail with the following errors:
[DW_DLE_ARGUMENT] Either of arguments attr or ret was NULL.
[DW_DLE_ATTR_FORM_BAD] The attribute referenced by argument attr was
not of a permitted kind.
SEE ALSO
dwarf(3), dwarf_attr(3), dwarf_formblock(3), dwarf_formflag(3),
dwarf_formref(3), dwarf_formsig8(3), dwarf_formstring(3),
dwarf_hasattr(3)
FreeBSD 14.0-RELEASE-p11 June 21, 2010 FreeBSD 14.0-RELEASE-p11