[PATCH 3/3] arm64: Drop the inline assembly implementation of function_nocfi

[Sami Tolvanen]

Drop the inline assembly version of function_nocfi() now that
CONFIG_CFI_CLANG depends on __builtin_function_start(), which allows
this macro to be implemented more cleanly and in a way that works also
with static initializers.

Signed-off-by: Sami Tolvanen <samitolvanen at google.com>
---
 arch/arm64/include/asm/compiler.h | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/arch/arm64/include/asm/compiler.h b/arch/arm64/include/asm/compiler.h
index dc3ea4080e2e..6fb2e6bcc392 100644
--- a/arch/arm64/include/asm/compiler.h
+++ b/arch/arm64/include/asm/compiler.h
@@ -23,20 +23,4 @@
 #define __builtin_return_address(val)					\
 	(void *)(ptrauth_clear_pac((unsigned long)__builtin_return_address(val)))
 
-#ifdef CONFIG_CFI_CLANG
-/*
- * With CONFIG_CFI_CLANG, the compiler replaces function address
- * references with the address of the function's CFI jump table
- * entry. The function_nocfi macro always returns the address of the
- * actual function instead.
- */
-#define function_nocfi(x) ({						\
-	void *addr;							\
-	asm("adrp %0, " __stringify(x) "\n\t"				\
-	    "add  %0, %0, :lo12:" __stringify(x)			\
-	    : "=r" (addr));						\
-	addr;								\
-})
-#endif
-
 #endif /* __ASM_COMPILER_H */
-- 
2.35.0