for (const Reference *ref : *atom) {
if (ref->kindNamespace() != Reference::KindNamespace::COFF)
continue;
- if (isa<AbsoluteAtom>(ref->target()))
+
+ // An absolute symbol points to a fixed location in memory. Their
+ // address should not be fixed at load time. One exception is ImageBase
+ // because that's relative to run-time image base address.
+ if (auto *abs = dyn_cast<AbsoluteAtom>(ref->target()))
+ if (!abs->name().equals("__ImageBase") &&
+ !abs->name().equals("___ImageBase"))
continue;
uint64_t address = layout->_virtualAddr + ref->offsetInAtom();
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 4
- SectionData: B800000000506800000000680000000050E80000000050E800000000
+ SectionData: B800000000506800000000680000000050E80000000050E80000000050E800000000
Relocations:
- VirtualAddress: 0
SymbolName: abs_symbol
- VirtualAddress: 24
SymbolName: _ExitProcess@4
Type: IMAGE_REL_I386_REL32
+ - VirtualAddress: 30
+ SymbolName: ___ImageBase
+ Type: IMAGE_REL_I386_DIR32
- Name: .data
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
Alignment: 4
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
+ - Name: ___ImageBase
+ Value: 0
+ SectionNumber: 0
+ SimpleType: IMAGE_SYM_TYPE_NULL
+ ComplexType: IMAGE_SYM_DTYPE_NULL
+ StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...
BASEREL-NEXT: Type: HIGHLOW
BASEREL-NEXT: Address: 0x200C
BASEREL-NEXT: }
+BASEREL-NEXT: Entry {
+BASEREL-NEXT: Type: HIGHLOW
+BASEREL-NEXT: Address: 0x201E
+BASEREL-NEXT: }
+BASEREL-NEXT: Entry {
+BASEREL-NEXT: Type: ABSOLUTE
+BASEREL-NEXT: Address: 0x2000
+BASEREL-NEXT: }
BASEREL-NEXT: ]
NOBASEREL: BaseReloc [
NOBASEREL-HEADER: IMAGE_FILE_RELOCS_STRIPPED
BASEREL-HEADER: BaseRelocationTableRVA: 0x3000
-BASEREL-HEADER: BaseRelocationTableSize: 0xC
+BASEREL-HEADER: BaseRelocationTableSize: 0x10
BASEREL-HEADER: Name: .reloc (2E 72 65 6C 6F 63 00 00)
-BASEREL-HEADER-NEXT: VirtualSize: 0xC
+BASEREL-HEADER-NEXT: VirtualSize: 0x10
BASEREL-HEADER-NEXT: VirtualAddress: 0x3000
BASEREL-HEADER-NEXT: RawDataSize: 512
BASEREL-HEADER-NEXT: PointerToRawData: 0x600