dwarf_add_AT_reference —
create and attach an attribute that references
another DIE
DWARF Access Library (libdwarf, -ldwarf)
#include
<libdwarf.h>
Dwarf_P_Attribute
dwarf_add_AT_reference(
Dwarf_P_Debug
dbg,
Dwarf_P_Die die,
Dwarf_Half attr,
Dwarf_P_Die ref_die,
Dwarf_Error *err);
Function
dwarf_add_AT_reference() creates an
attribute descriptor that references another debugging information entry in
the same compilation unit. The attribute will be of DWARF form
DW_FORM_ref4
or
DW_FORM_ref8
depending on the target
address size, and will contain the section-relative offset of the referenced
debugging information entry as its value.
Argument
dbg should reference a DWARF producer
instance allocated using
dwarf_producer_init(3)
or
dwarf_producer_init_b(3).
Argument
die should reference a debugging
information entry allocated using
dwarf_new_die(3).
Argument
attr should specify the attribute code
of the created attribute descriptor.
Argument
ref_die should hold the debugging
information entry descriptor that the attribute should refer to.
If argument
err is not NULL, it will be used to
store error information in case of an error.
On success, function
dwarf_add_AT_reference()
returns the created attribute descriptor. In case of an error, function
dwarf_add_AT_reference() returns
DW_DLV_BADADDR
and sets the argument
err.
Function
dwarf_add_AT_reference() can fail with:
-
-
- [
DW_DLE_ARGUMENT
]
- One of the arguments dbg,
die or
ref_die was NULL.
-
-
- [
DW_DLE_MEMORY
]
- An out of memory condition was encountered during the
execution of the function.
dwarf(3),
dwarf_add_AT_dataref(3),
dwarf_add_AT_ref_address(3),
dwarf_add_AT_signed_const(3),
dwarf_add_AT_unsigned_const(3),
dwarf_new_die(3),
dwarf_producer_init(3),
dwarf_producer_init_b(3)