This version is based on tip/tip.git objtool/core branch [1], add some weak and arch-specific functions to make the generic code more readable, tested with the latest upstream mainline Binutils, GCC and Clang. The first 6 patches are preparation for patch #7 to enable jump table for objtool on LoongArch, the last 2 patches are small enough to fix objtool warnings "funcA() falls through to next function funcB()", one is under arch/loongarch and the other is under drm/amd/display. v6: -- Add arch_reloc_size() for x86 and ppc. -- Call arch_reloc_size() directly in add_jump_table(). -- Refine arch_adjust_offset() for LoongArch. -- Rename arch_adjust_offset() to arch_jump_table_sym_offset(). -- Get each table size of rodata in time for switch table. -- Update the commit message to make it more clear. [1] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=objtool/core Tiezhu Yang (9): objtool: Handle various symbol types of rodata objtool: Handle different entry size of rodata objtool: Handle PC relative relocation type objtool: Handle unreachable entry of rodata objtool/LoongArch: Add support for switch table objtool/LoongArch: Add support for goto table LoongArch: Enable jump table for objtool LoongArch: Convert unreachable() to BUG() drm/amd/display: Mark dc_fixpt_from_fraction() noinline arch/loongarch/Kconfig | 3 + arch/loongarch/Makefile | 6 +- arch/loongarch/kernel/machine_kexec.c | 4 +- .../drm/amd/display/dc/basics/fixpt31_32.c | 2 +- tools/objtool/arch/loongarch/decode.c | 28 ++- .../objtool/arch/loongarch/include/arch/elf.h | 7 + tools/objtool/arch/loongarch/special.c | 159 +++++++++++++++++- tools/objtool/arch/powerpc/decode.c | 15 ++ tools/objtool/arch/x86/decode.c | 13 ++ tools/objtool/check.c | 28 ++- tools/objtool/include/objtool/arch.h | 3 + 11 files changed, 251 insertions(+), 17 deletions(-) -- 2.42.0
