llvm-project/llvm/docs/Extensions.rst

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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