Adding support for absolute relocations. This occurs in ELF files when a relocation is given with no name and an undefined section. The relocation is applied with an address of zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175643 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index c5b807b..64c9792 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -432,14 +432,21 @@
RelocationList &Relocs = i->second;
SymbolTableMap::const_iterator Loc = GlobalSymbolTable.find(Name);
if (Loc == GlobalSymbolTable.end()) {
- // This is an external symbol, try to get it address from
- // MemoryManager.
- uint8_t *Addr = (uint8_t*) MemMgr->getPointerToNamedFunction(Name.data(),
+ if (Name.size() == 0) {
+ // This is an absolute symbol, use an address of zero.
+ DEBUG(dbgs() << "Resolving absolute relocations." << "\n");
+ resolveRelocationList(Relocs, 0);
+ }
+ else {
+ // This is an external symbol, try to get it address from
+ // MemoryManager.
+ uint8_t *Addr = (uint8_t*) MemMgr->getPointerToNamedFunction(Name.data(),
true);
- DEBUG(dbgs() << "Resolving relocations Name: " << Name
- << "\t" << format("%p", Addr)
- << "\n");
- resolveRelocationList(Relocs, (uintptr_t)Addr);
+ DEBUG(dbgs() << "Resolving relocations Name: " << Name
+ << "\t" << format("%p", Addr)
+ << "\n");
+ resolveRelocationList(Relocs, (uintptr_t)Addr);
+ }
} else {
report_fatal_error("Expected external symbol");
}