Implement DTPOFF64 and DTPMOD64 relocations.

Finally closes #5463.

Author: fuzyll

arch/x86/arch_x86.cpp

@@ -4416,6 +4416,16 @@ class x64ElfRelocationHandler: public RelocationHandler
 			memcpy(dest, (uint8_t*)&write, sizeof(uint64_t));
 			return true;
 		}
+		case R_X86_64_DTPMOD64: {
+			uint64_t write = 0;
+			memcpy(dest, (uint8_t*)&write, sizeof(uint64_t));
+			return true;
+		}
+		case R_X86_64_DTPOFF64: {
+			uint64_t write = reloc->GetTarget() + info.addend;
+			memcpy(dest, (uint8_t*)&write, sizeof(uint64_t));
+			return true;
+		}
 		default:
 			return RelocationHandler::ApplyRelocation(view, arch, reloc, dest, len);
 		}
@@ -4509,6 +4519,21 @@ class x64ElfRelocationHandler: public RelocationHandler
 				reloc.size = 8;
 				reloc.truncateSize = 8;
 				break;
+			case R_X86_64_DTPMOD64:
+				reloc.pcRelative = false;
+				reloc.baseRelative = false;
+				reloc.hasSign = false;
+				reloc.size = 8;
+				reloc.truncateSize = 8;
+				reloc.symbolIndex = 0;
+				break;
+			case R_X86_64_DTPOFF64:
+				reloc.pcRelative = false;
+				reloc.baseRelative = false;
+				reloc.hasSign = false;
+				reloc.size = 8;
+				reloc.truncateSize = 8;
+				break;
 			case R_X86_64_GOTOFF64:
 			case R_X86_64_GOT64:
 			case R_X86_64_GOTPLT64:

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)
 	{

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