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Hi Greg, I'm afraid I've not looked into the infrastructure Jim put into place, so I've not really been able to answer the "how should I do it" questions, but hopefully I can comment on the ABI. > And probably questions for Tim, are these "section-relative" mapping > symbols, as defined in 4.6.5.1 of the ELF for ARM document? Yes, they are. > And what

...ot; : "$a"; + StringRef UniqueName = Name.str() + "." + itostr(MappingSymbolCounter++); + MCSymbol *Symbol = getContext().GetOrCreateSymbol(UniqueName); + + MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol); + MCELF::SetType(SD, ELF::STT_NOTYPE); + MCELF::SetBinding(SD, ELF::STB_LOCAL); + SD.setExternal(false); + Symbol->setSection(*getCurrentSection()); + + const MCExpr *Value = MCSymbolRefExpr::Create(Start, getContext()); + Symbol->setVariableValue(Value); +} + +void MCELFStreamer::EmitDataRegion(MCDataRegionType Kind) { + switch (Kind) { +...

Attached is an example of how to reproduce the issue. It uses a C file that happens to has a bunch of switch statements which are encoded as jump tables, giving us data-in-code. Usage: To build object files with clang via the -integrated-as versus via GCC: $ export NDK_DIR=<my_ndk_dir> $ export LLVM_DIR=<my_llvm_bin_dir> $ make To test that the generated objects contain the same

Getting closer... When emitting symbols, how do I set the symbol's value to the address of the current instruction? Do I need to emit a label in the current section and another that uses the former to point to the latter? If possible, a code sample would be very helpful. And probably questions for Tim, are these "section-relative" mapping symbols, as defined in 4.6.5.1 of the