DWARF_ADD_AT_REFERENCE(3)

💖 DWARF_ADD_AT_REFERENCE(3) 💖

okay bestie, this one is from the Library Functions Manual, and it is literally about creating and attaching an attribute that references another DIE. iconic behavior, no cap.

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🌸 NAME 🌸

dwarf_add_AT_reference — create and attach an attribute that references another DIE

🦋 LIBRARY 🦋

DWARF Access Library (libdwarf, -ldwarf)

✨ SYNOPSIS ✨

#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);

🎀 DESCRIPTION 🎀

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. slay, that's the whole vibe.

• dbg — should reference a DWARF producer instance allocated using dwarf_producer_init(3) or dwarf_producer_init_b(3).
• die — should reference a debugging information entry allocated using dwarf_new_die(3).
• attr — should specify the attribute code of the created attribute descriptor.
• 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. bestie, always give your errors somewhere cute to live.

🌈 RETURN VALUES 🌈

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. so if you see DW_DLV_BADADDR, check err — she's trying to tell you something.

💀 ERRORS 💀

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.

🫶 SEE ALSO 🫶

go look at these besties:

• 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)

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source/version: Debian · date: September 4, 2011 — mwah 💋 periodt.