From 770e9c0c75a943cd4d47ba3cb3be936d09a6c86f Mon Sep 17 00:00:00 2001
From: Alexander Taylor <alex@vector35.com>
Date: Sat, 24 Jan 2026 01:24:25 -0500
Subject: Implement DTPOFF64 and DTPMOD64 relocations.

Finally closes #5463.
---
 view/elf/elfview.cpp | 12 +++++++++++-
 view/elf/elfview.h   |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

(limited to 'view')

diff --git a/view/elf/elfview.cpp b/view/elf/elfview.cpp
index 2df24a5a..58e82efc 100644
--- a/view/elf/elfview.cpp
+++ b/view/elf/elfview.cpp
@@ -1480,6 +1480,13 @@ bool ElfView::Init()
 					else if(reloc.relocType == R_ARM_TLS_DTPMOD32)
 						tlsModuleStarts.push_back(reloc.offset);
 				}
+				else if (m_arch && (m_arch->GetName() == "x86_64"))
+				{
+					if (reloc.relocType == R_X86_64_DTPOFF64)
+						tlsOffsets.push_back(reloc.offset);
+					else if (reloc.relocType == R_X86_64_DTPMOD64)
+						tlsModuleStarts.push_back(reloc.offset);
+				}
 			}
 
 			if (relocHandler->GetRelocationInfo(this, m_arch, m_relocationInfo))
@@ -2496,10 +2503,13 @@ bool ElfView::Init()
 	}
 
 	// Add type, data variables for TLS entries
+	size_t tlsModuleEntrySize = 4;
+	if (m_arch && (m_arch->GetAddressSize() == 8))
+		tlsModuleEntrySize = 8;
 	for (auto offset : tlsModuleStarts)
 	{
 		/* All module ID's are set to 0. */
-		DefineDataVariable(offset, Type::IntegerType(4, false)->WithConfidence(BN_FULL_CONFIDENCE));
+		DefineDataVariable(offset, Type::IntegerType(tlsModuleEntrySize, false)->WithConfidence(BN_FULL_CONFIDENCE));
 	}
 	for (auto offset : tlsOffsets)
 	{
diff --git a/view/elf/elfview.h b/view/elf/elfview.h
index 0e8679b3..f81fa832 100644
--- a/view/elf/elfview.h
+++ b/view/elf/elfview.h
@@ -343,6 +343,10 @@
 // x86 ONLY
 #define R_386_IRELATIVE 0x2a
 
+// x86-64 ONLY
+#define R_X86_64_DTPMOD64 0x10
+#define R_X86_64_DTPOFF64 0x11
+
 // ARM ONLY
 #define R_ARM_TLS_DTPMOD32 0x11
 #define R_ARM_TLS_DTPOFF32 0x12
-- 
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