NAME

dwarf_add_AT_signed_const, dwarf_add_AT_unsigned_const —

create and attach constant class attributes

LIBRARY

DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

#include <libdwarf.h>

Dwarf_P_Attribute
dwarf_add_AT_signed_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_Signed value, Dwarf_Error *err);

Dwarf_P_Attribute
dwarf_add_AT_unsigned_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_Unsigned value, Dwarf_Error *err);

DESCRIPTION

These functions create attribute descriptors belonging to the ‘constant’ class and attach them to the debugging information entry referenced by argument die.

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 specifies the attribute code of the created attribute descriptor.

Function dwarf_add_AT_signed_const() creates an attribute descriptor with the signed value specified in argument value.

Function dwarf_add_AT_unsigned_const() creates an attribute descriptor with the unsigned value specified in argument value.

The attribute created by these function will have one of the DWARF forms DW_FORM_data1, DW_FORM_data2, DW_FORM_data4 or DW_FORM_data8, depending on the size of the value specified in argument value.

If argument err is not NULL, it will be used by these functions to store error information in case of an error.

RETURN VALUES

On success, these functions return the created attribute descriptor. In case of an error, these functions return DW_DLV_BADADDR and set the argument err.

ERRORS

These functions can fail with:

[DW_DLE_ARGUMENT]: Either of the arguments dbg or die was NULL.
[DW_DLE_MEMORY]: An out of memory condition was encountered during execution.