From cd5c7247ab895dfe4197e08736d025e807ce9bca Mon Sep 17 00:00:00 2001 From: Andrew Kaylor Date: Thu, 21 Feb 2013 23:45:19 +0000 Subject: [PATCH] Change to JITDefault code model for ELF targets On x86-64 platforms, the small code model assumes that code will be loaded below the 2GB boundary. With the static relocation model, the fact that the expression code is initially loaded (in the LLDB debugger address space) above that boundary causes problems. Switching to the JITDefault code model causes the large code model to be used for 64-bit targets and small code model of 32-bit targets. llvm-svn: 175828 --- lldb/source/Expression/ClangExpressionParser.cpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/lldb/source/Expression/ClangExpressionParser.cpp b/lldb/source/Expression/ClangExpressionParser.cpp index 05e26e1..1d86c91 100644 --- a/lldb/source/Expression/ClangExpressionParser.cpp +++ b/lldb/source/Expression/ClangExpressionParser.cpp @@ -609,10 +609,18 @@ ClangExpressionParser::PrepareForExecution (lldb::addr_t &func_allocation_addr, llvm::Triple triple(module_ap->getTargetTriple()); llvm::Function *function = module_ap->getFunction (function_name.c_str()); llvm::Reloc::Model relocModel; + llvm::CodeModel::Model codeModel; if (triple.isOSBinFormatELF()) + { relocModel = llvm::Reloc::Static; + // This will be small for 32-bit and large for 64-bit. + codeModel = llvm::CodeModel::JITDefault; + } else + { relocModel = llvm::Reloc::PIC_; + codeModel = llvm::CodeModel::Small; + } EngineBuilder builder(module_ap.release()); builder.setEngineKind(EngineKind::JIT) .setErrorStr(&error_string) @@ -620,7 +628,7 @@ ClangExpressionParser::PrepareForExecution (lldb::addr_t &func_allocation_addr, .setJITMemoryManager(jit_memory_manager) .setOptLevel(CodeGenOpt::Less) .setAllocateGVsWithCode(true) - .setCodeModel(CodeModel::Small) + .setCodeModel(codeModel) .setUseMCJIT(true); StringRef mArch; -- 2.7.4