diff options
| -rw-r--r-- | llvm/lib/ExecutionEngine/JITLink/ELFLinkGraphBuilder.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/lib/ExecutionEngine/JITLink/ELFLinkGraphBuilder.h b/llvm/lib/ExecutionEngine/JITLink/ELFLinkGraphBuilder.h index c1f69d0..2fa4162f 100644 --- a/llvm/lib/ExecutionEngine/JITLink/ELFLinkGraphBuilder.h +++ b/llvm/lib/ExecutionEngine/JITLink/ELFLinkGraphBuilder.h @@ -540,6 +540,21 @@ template <typename ELFT> Error ELFLinkGraphBuilder<ELFT>::graphifySymbols() { auto &GSym = G->addExternalSymbol(*Name, Sym.st_size, Sym.getBinding() == ELF::STB_WEAK); setGraphSymbol(SymIndex, GSym); + } else if (Sym.isUndefined() && Sym.st_value == 0 && Sym.st_size == 0 && + Sym.getType() == ELF::STT_NOTYPE && + Sym.getBinding() == ELF::STB_LOCAL && Name->empty()) { + // Some relocations (e.g., R_RISCV_ALIGN) don't have a target symbol and + // use this kind of null symbol as a placeholder. + LLVM_DEBUG({ + dbgs() << " " << SymIndex << ": Creating null graph symbol\n"; + }); + + auto SymName = + G->allocateContent("__jitlink_ELF_SYM_UND_" + Twine(SymIndex)); + auto SymNameRef = StringRef(SymName.data(), SymName.size()); + auto &GSym = G->addAbsoluteSymbol(SymNameRef, orc::ExecutorAddr(0), 0, + Linkage::Strong, Scope::Local, false); + setGraphSymbol(SymIndex, GSym); } else { LLVM_DEBUG({ dbgs() << " " << SymIndex |