From 18d49acdab79d6f0966b47182b6c3a2ba3d9f80f Mon Sep 17 00:00:00 2001
From: Nico Rieck <nico.rieck@gmail.com>
Date: Wed, 10 Apr 2013 23:28:17 +0000
Subject: MC: Support COFF image-relative MCSymbolRefs

Add support for the COFF relocation types IMAGE_REL_I386_DIR32NB and
IMAGE_REL_AMD64_ADDR32NB for 32- and 64-bit respectively. These are
similar to normal 4-byte relocations except that they do not include
the base address of the image.

Image-relative relocations are used for debug information (32-bit) and
SEH unwind tables (64-bit).

A new MCSymbolRef variant called 'VK_COFF_IMGREL32' is introduced to
specify such relocations. For AT&T assembly, this variant can be accessed
using the symbol suffix '@imgrel'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179240 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/MC/COFF/relocation-imgrel.s | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 test/MC/COFF/relocation-imgrel.s

(limited to 'test/MC')

diff --git a/test/MC/COFF/relocation-imgrel.s b/test/MC/COFF/relocation-imgrel.s
new file mode 100644
index 0000000..ccd19ee
--- /dev/null
+++ b/test/MC/COFF/relocation-imgrel.s
@@ -0,0 +1,29 @@
+// COFF Image-relative relocations
+//
+// Test that we produce image-relative relocations (IMAGE_REL_I386_DIR32NB
+// and IMAGE_REL_AMD64_ADDR32NB) when accessing foo@imgrel.
+
+// RUN: llvm-mc -filetype=obj -triple i686-pc-win32 %s | llvm-readobj -r | FileCheck --check-prefix=W32 %s
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-win32 %s | llvm-readobj -r | FileCheck --check-prefix=W64 %s
+
+.data
+foo:
+    .long 1
+
+.text
+    mov foo@IMGREL(%ebx, %ecx, 4), %eax
+    mov foo@imgrel(%ebx, %ecx, 4), %eax
+
+// W32:      Relocations [
+// W32-NEXT:   Section (1) .text {
+// W32-NEXT:     0x3 IMAGE_REL_I386_DIR32NB foo
+// W32-NEXT:     0xA IMAGE_REL_I386_DIR32NB foo
+// W32-NEXT:   }
+// W32-NEXT: ]
+
+// W64:      Relocations [
+// W64-NEXT:   Section (1) .text {
+// W64-NEXT:     0x4 IMAGE_REL_AMD64_ADDR32NB foo
+// W64-NEXT:     0xC IMAGE_REL_AMD64_ADDR32NB foo
+// W64-NEXT:   }
+// W64-NEXT: ]
-- 
cgit v1.1