Hi Mark, On 2022/12/1 23:54, Mark Wielaard wrote: > Hi Hengqi, > > On Thu, 2022-12-01 at 23:34 +0800, Hengqi Chen via Elfutils-devel > wrote: >> I am using pahole (which relies on libelf) to process an elf file >> ([0]): >> >> LLVM_OBJCOPY="objcopy" pahole -J --btf_gen_floats --btf_base >> vmlinux adl_pci9111.ko >> >> This failed with: >> >> die__process: DW_TAG_compile_unit, DW_TAG_type_unit, >> DW_TAG_partial_unit or DW_TAG_skeleton_unit expected got member >> (0xd)! >> >> The .ko contains two CU, readelf says that the abbrev offsets are at >> 0 and 0x907, >> but dwarf_nextcu reports that abbrev offsets are both at 0. >> >> pahole expects to find DW_TAG_compile_unit, but seams that the wrong >> abbrev offset causes the failure. >> >> >> [0]: https://gitlab.com/chenhengqi/loong-debug > > I took a quick look at the adl_pci9111.ko there. And the issue is that > elfutils doesn't know how to handle the relocations for LoongArch yet. > > Specifically the backend should implement the reloc_simple_type hook. > > Cheers, > > Mark
That's great. Thanks for the pointer. Will try to implement it. Cheers, --- Hengqi
