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x86,objtool: Move the ASM_REACHABLE annotation to objtool.h

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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
This commit is contained in:
Peter Zijlstra
2022-03-14 18:05:52 +01:00
parent be0075951f
commit dca5da2abe
5 changed files with 34 additions and 7 deletions
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7
include/linux/compiler.h
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@@ -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