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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2025-02-11 19:50:10 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:44:34 +0200 |
| commit | 5c747362c357cd2c91331a0aee28576c8589c688 (patch) | |
| tree | 999723926781f8a8555c815588aba7aaa3f5aee8 /tools/objtool/arch/powerpc/decode.c | |
| parent | 4dc1f33bfac82af099731fc5b5243340bae2276f (diff) | |
| download | linux-5c747362c357cd2c91331a0aee28576c8589c688.tar.gz linux-5c747362c357cd2c91331a0aee28576c8589c688.tar.bz2 linux-5c747362c357cd2c91331a0aee28576c8589c688.zip | |
objtool: Handle various symbol types of rodata
[ Upstream commit ab6ce22b789622ca732e91cbb3a5cb5ba370cbd0 ]
In the relocation section ".rela.rodata" of each .o file compiled with
LoongArch toolchain, there are various symbol types such as STT_NOTYPE,
STT_OBJECT, STT_FUNC in addition to the usual STT_SECTION, it needs to
use reloc symbol offset instead of reloc addend to find the destination
instruction in find_jump_table() and add_jump_table().
For the most part, an absolute relocation type is used for rodata. In the
case of STT_SECTION, reloc->sym->offset is always zero, and for the other
symbol types, reloc_addend(reloc) is always zero, thus it can use a simple
statement "reloc->sym->offset + reloc_addend(reloc)" to obtain the symbol
offset for various symbol types.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: https://lore.kernel.org/r/20250211115016.26913-2-yangtiezhu@loongson.cn
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Stable-dep-of: ef753d66051c ("objtool: Fix detection of consecutive jump tables on Clang 20")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/objtool/arch/powerpc/decode.c')
0 files changed, 0 insertions, 0 deletions