[llvm] [Object][x86-64] Add support for `R_X86_64_GLOB_DAT` relocations. (PR #103029)

[Alastair Houghton via llvm-commits]

https://github.com/al45tair created https://github.com/llvm/llvm-project/pull/103029

Add support for `R_X86_64_GLOB_DAT` relocations to the relocation resolver.

rdar://133510292

>From 4a84199b3c262e3643cfcfc0cdf9a41c902a9b23 Mon Sep 17 00:00:00 2001
From: Alastair Houghton <ahoughton at apple.com>
Date: Tue, 13 Aug 2024 10:11:16 +0100
Subject: [PATCH] [Object][x86-64] Add support for `R_X86_64_GLOB_DAT`
 relocations.

Add support for `R_X86_64_GLOB_DAT` relocations to the relocation
resolver.

rdar://133510292
---
 llvm/lib/Object/RelocationResolver.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/llvm/lib/Object/RelocationResolver.cpp b/llvm/lib/Object/RelocationResolver.cpp
index d9bb8f175ef83a..7f90834c3d2199 100644
--- a/llvm/lib/Object/RelocationResolver.cpp
+++ b/llvm/lib/Object/RelocationResolver.cpp
@@ -47,6 +47,7 @@ static bool supportsX86_64(uint64_t Type) {
   case ELF::R_X86_64_PC64:
   case ELF::R_X86_64_32:
   case ELF::R_X86_64_32S:
+  case ELF::R_X86_64_GLOB_DAT:
     return true;
   default:
     return false;
@@ -68,6 +69,8 @@ static uint64_t resolveX86_64(uint64_t Type, uint64_t Offset, uint64_t S,
   case ELF::R_X86_64_32:
   case ELF::R_X86_64_32S:
     return (S + Addend) & 0xFFFFFFFF;
+  case ELF::R_X86_64_GLOB_DAT:
+    return S;
   default:
     llvm_unreachable("Invalid relocation type");
   }