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DWARF_ATTR(3) FreeBSD Library Functions Manual DWARF_ATTR(3) NAME dwarf_attr -- retrieve an attribute descriptor associated with a DWARF debugging information entry LIBRARY DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS #include <libdwarf.h> int dwarf_attr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Attribute *atp, Dwarf_Error *err); DESCRIPTION Function dwarf_attr() retrieves the attribute descriptor for an attribute associated with the DWARF debugging information entry descriptor in argu- ment die. DWARF attribute descriptors are represented by value of the opaque type Dwarf_Attribute, see dwarf(3). Argument attr names the desired DWARF attribute. Legal values for argu- ment attr are those denoted by the DW_AT_* constants in the DWARF speci- fication. Argument atp points to a location into which the returned attribute de- scriptor will be written. The returned descriptor may then be passed to the form query functions in the dwarf(3) API set to access the data asso- ciated with the attribute. If argument err is non-NULL, it will be used to return an error descrip- tor in case of an error. RETURN VALUES Function dwarf_attr() returns DW_DLV_OK on success. If the debugging information entry descriptor denoted by argument die does not contain the named attribute, the function returns DW_DLV_NO_ENTRY and sets argument err. For other errors, it returns DW_DLV_ERROR and sets argument err. ERRORS Function dwarf_attr() can fail with the following errors: [DW_DLE_ARGUMENT] Either of arguments die or atp was NULL. [DW_DLE_NO_ENTRY] Argument die had no attribute corresponding to the value in argument attr. SEE ALSO dwarf(3), dwarf_attrlist(3), dwarf_attroffset(3), dwarf_hasattr(3), dwarf_hasform(3), dwarf_whatattr(3), dwarf_whatform(3) FreeBSD 13.0 April 8, 2010 FreeBSD 13.0
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO
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