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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-09-14 17:41:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-26 16:26:57 +0300 |
| commit | bbbe1b23c7e61e6dd6cd1389cac704ad14cd9d4a (patch) | |
| tree | 2c04bbf890d56e09d71f4484449bcdc01e262631 /tools | |
| parent | bd3d12e6fda0a7911a0f56f223924bb075b92d1e (diff) | |
| download | linux-bbbe1b23c7e61e6dd6cd1389cac704ad14cd9d4a.tar.xz | |
objtool: Add frame-pointer-specific function ignore
[ Upstream commit e028c4f7ac7ca8c96126fe46c54ab3d56ffe6a66 ]
Add a CONFIG_FRAME_POINTER-specific version of
STACK_FRAME_NON_STANDARD() for the case where a function is
intentionally missing frame pointer setup, but otherwise needs
objtool/ORC coverage when frame pointers are disabled.
Link: https://lkml.kernel.org/r/163163047364.489837.17377799909553689661.stgit@devnote2
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Stable-dep-of: c8c301abeae5 ("x86/ibt: Add ANNOTATE_NOENDBR")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/linux/objtool.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/include/linux/objtool.h b/tools/include/linux/objtool.h index 662f19374bd9..ce33290a4e70 100644 --- a/tools/include/linux/objtool.h +++ b/tools/include/linux/objtool.h @@ -71,6 +71,17 @@ struct unwind_hint { static void __used __section(".discard.func_stack_frame_non_standard") \ *__func_stack_frame_non_standard_##func = func +/* + * STACK_FRAME_NON_STANDARD_FP() is a frame-pointer-specific function ignore + * for the case where a function is intentionally missing frame pointer setup, + * but otherwise needs objtool/ORC coverage when frame pointers are disabled. + */ +#ifdef CONFIG_FRAME_POINTER +#define STACK_FRAME_NON_STANDARD_FP(func) STACK_FRAME_NON_STANDARD(func) +#else +#define STACK_FRAME_NON_STANDARD_FP(func) +#endif + #else /* __ASSEMBLY__ */ /* @@ -126,6 +137,7 @@ struct unwind_hint { #define UNWIND_HINT(sp_reg, sp_offset, type, end) \ "\n\t" #define STACK_FRAME_NON_STANDARD(func) +#define STACK_FRAME_NON_STANDARD_FP(func) #else #define ANNOTATE_INTRA_FUNCTION_CALL .macro UNWIND_HINT type:req sp_reg=0 sp_offset=0 end=0 |