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===============
LLVM Extensions
===============

.. contents::
   :local:
   :depth: 1

.. toctree::
   :hidden:

Introduction
============

This document describes extensions to tools and formats LLVM seeks compatibility
with.

Machine-specific Assembly Syntax
================================

X86/COFF-Dependent
------------------

The following additional relocation type is supported:

**@IMGREL** (AT&T syntax only) generates an image-relative relocation that
corresponds to the COFF relocation types ``IMAGE_REL_I386_DIR32NB`` (32-bit) or
``IMAGE_REL_AMD64_ADDR32NB`` (64-bit).

.. code-block:: gas

  .text
  fun:
    mov foo@IMGREL(%ebx, %ecx, 4), %eax

  .section .pdata
    .long fun@IMGREL
    .long (fun@imgrel + 0x3F)
    .long $unwind$fun@imgrel