[llvm-dev] ARM baremetal linking

[Goran Mekić via llvm-dev]

On Tue, Oct 09, 2018 at 10:12:48AM +0100, Peter Smith wrote:
> Ok. Good luck tracking down where the problem is.
Thanx! Unfortunately, I'll need it. :o(

> It looks like the Tag_ARM_ISA_use is from the GCC build (from the
> first pastebin link). From the symbol table it looks like there is
> some ARM code in there ($a symbols) and from the file symbols most
> likely from files _lshrdi3.o, _aeabi_ldivmod.o, _aeabi_uldivmod.o,
> libgcc2.c, _dvmd_tls.o, _clzdi2.o and _clzsi2.o . It looks like the
> GCC build may be picking up the wrong version of libgcc as I would
> expect problems if this ARM code was ever run. Just as an aside are
> you using LLD to link the GCC objects? I'd half expect GNU LD to give
> you an error message for the presence of ARM code in M-profile.
>
> Peter
GCC is linked with arm-none-eabi-ld and Clang with ld.lld60 (as it's
FreeBSD and it has multiple LLVM packages, binaries are appended with
the version number).
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