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authorJosh Poimboeuf <jpoimboe@redhat.com>2021-01-21 15:29:23 -0600
committerJosh Poimboeuf <jpoimboe@redhat.com>2021-01-26 11:12:00 -0600
commit081df94301e317e84c3413686043987da2c3e39d (patch)
tree7084e05cb43a65f658eff17cdc15eabc51522118 /tools
parentecf11ba4d066fe527586c6edd6ca68457ca55cf4 (diff)
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objtool: Add asm version of STACK_FRAME_NON_STANDARD
To be used for adding asm functions to the ignore list. The "aw" is needed to help the ELF section metadata match GCC-created sections. Otherwise the linker creates duplicate sections instead of combining them. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/8faa476f9a5ac89af27944ec184c89f95f3c6c49.1611263462.git.jpoimboe@redhat.com
Diffstat (limited to 'tools')
-rw-r--r--tools/include/linux/objtool.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/include/linux/objtool.h b/tools/include/linux/objtool.h
index 577f51436cf9..add1c6eb157e 100644
--- a/tools/include/linux/objtool.h
+++ b/tools/include/linux/objtool.h
@@ -109,6 +109,12 @@ struct unwind_hint {
.popsection
.endm
+.macro STACK_FRAME_NON_STANDARD func:req
+ .pushsection .discard.func_stack_frame_non_standard, "aw"
+ .long \func - .
+ .popsection
+.endm
+
#endif /* __ASSEMBLY__ */
#else /* !CONFIG_STACK_VALIDATION */
@@ -122,6 +128,8 @@ struct unwind_hint {
#define ANNOTATE_INTRA_FUNCTION_CALL
.macro UNWIND_HINT sp_reg:req sp_offset=0 type:req end=0
.endm
+.macro STACK_FRAME_NON_STANDARD func:req
+.endm
#endif
#endif /* CONFIG_STACK_VALIDATION */