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authorPeter Zijlstra <peterz@infradead.org>2022-03-14 20:05:52 +0300
committerPeter Zijlstra <peterz@infradead.org>2022-03-15 12:32:45 +0300
commitdca5da2abe406168b85f97e22109710ebe0bda08 (patch)
tree6a4dedd941deeb04b4b7f197ab0bd2898e9a40b2 /include/linux/objtool.h
parentbe0075951fde739f14ee2b659e2fd6e2499c46c0 (diff)
downloadlinux-dca5da2abe406168b85f97e22109710ebe0bda08.tar.xz
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/objtool.h')
-rw-r--r--include/linux/objtool.h16
1 files changed, 16 insertions, 0 deletions
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 */