DWARF_ATTR(3) | Library Functions Manual | DWARF_ATTR(3) |
dwarf_attr
—
#include <libdwarf.h>
int
dwarf_attr
(Dwarf_Die die,
Dwarf_Half attr, Dwarf_Attribute
*atp, Dwarf_Error *err);
dwarf_attr
() retrieves the attribute descriptor
for an attribute associated with the DWARF debugging information entry
descriptor in argument 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 argument attr are those
denoted by the DW_AT_*
constants in the DWARF
specification.
Argument atp points to a location into which the returned attribute descriptor 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 associated with the attribute.
If argument err is non-NULL, it will be used to return an error descriptor in case of an error.
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.
dwarf_attr
() can fail with the following
errors:
DW_DLE_ARGUMENT
]DW_DLE_NO_ENTRY
]April 8, 2010 | NetBSD 9.2 |