diff options
| author |   Peter Zijlstra <peterz@infradead.org> | 2022-03-14 18:05:52 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 10:32:45 +0100 |
| commit | dca5da2abe406168b85f97e22109710ebe0bda08 (patch) | |
| tree | 6a4dedd941deeb04b4b7f197ab0bd2898e9a40b2 /include/linux | |
| parent | x86: Annotate call_on_stack() (diff) | |
| download | wireguard-linux-dca5da2abe406168b85f97e22109710ebe0bda08.tar.xz wireguard-linux-dca5da2abe406168b85f97e22109710ebe0bda08.zip | |
x86,objtool: Move the ASM_REACHABLE annotation to objtool.h
Because we need a variant for .S files too.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/Yi9gOW9f1GGwwUD6@hirez.programming.kicks-ass.net
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compiler.h | 7 | ||||
| -rw-r--r-- | include/linux/objtool.h | 16 |
2 files changed, 16 insertions, 7 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 0f7fd205ab7e..219aa5ddbc73 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -125,18 +125,11 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, }) #define annotate_unreachable() __annotate_unreachable(__COUNTER__) -#define ASM_REACHABLE \ - "998:\n\t" \ - ".pushsection .discard.reachable\n\t" \ - ".long 998b - .\n\t" \ - ".popsection\n\t" - /* Annotate a C jump table to allow objtool to follow the code flow */ #define __annotate_jump_table __section(".rodata..c_jump_table") #else #define annotate_unreachable() -# define ASM_REACHABLE #define __annotate_jump_table #endif diff --git a/include/linux/objtool.h b/include/linux/objtool.h index f797368820c8..586d35720f13 100644 --- a/include/linux/objtool.h +++ b/include/linux/objtool.h @@ -83,6 +83,12 @@ struct unwind_hint { _ASM_PTR " 986b\n\t" \ ".popsection\n\t" +#define ASM_REACHABLE \ + "998:\n\t" \ + ".pushsection .discard.reachable\n\t" \ + ".long 998b - .\n\t" \ + ".popsection\n\t" + #else /* __ASSEMBLY__ */ /* @@ -142,6 +148,13 @@ struct unwind_hint { .popsection .endm +.macro REACHABLE +.Lhere_\@: + .pushsection .discard.reachable + .long .Lhere_\@ - . + .popsection +.endm + #endif /* __ASSEMBLY__ */ #else /* !CONFIG_STACK_VALIDATION */ @@ -153,6 +166,7 @@ struct unwind_hint { #define STACK_FRAME_NON_STANDARD(func) #define STACK_FRAME_NON_STANDARD_FP(func) #define ANNOTATE_NOENDBR +#define ASM_REACHABLE #else #define ANNOTATE_INTRA_FUNCTION_CALL .macro UNWIND_HINT sp_reg:req sp_offset=0 type:req end=0 @@ -161,6 +175,8 @@ struct unwind_hint { .endm .macro ANNOTATE_NOENDBR .endm +.macro REACHABLE +.endm #endif #endif /* CONFIG_STACK_VALIDATION */ |