[RFC 4/6] arm64: assembler: Add macro to annotate asm function having non standard stack-frame.

[Raphael Gault]

Signed-off-by: Raphael Gault <raphael.ga...@arm.com>
---
 arch/arm64/include/asm/assembler.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/include/asm/assembler.h 
b/arch/arm64/include/asm/assembler.h
index 4feb6119c3c9..636a07a7eb76 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -748,4 +748,22 @@ USER(\label, ic    ivau, \tmp2)                    // 
invalidate I line PoU
 .Lyield_out_\@ :
        .endm
 
+
+#ifdef CONFIG_STACK_VALIDATION
+       /*
+        * This macro is the arm64 assembler equivalent of the
+        * macro STACK_FRAME_NON_STANDARD define at
+        * ~/include/linux/frame.h
+        */
+       .macro  asm_stack_frame_non_standard    func
+       .pushsection ".discard.func_stack_frame_non_standard"
+       .8byte  \func
+       .popsection
+       .endm
+#else
+       .macro  asm_stack_frame_non_standard    func
+       .endm
+#endif
+
+
 #endif /* __ASM_ASSEMBLER_H */
-- 
2.17.1