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-rw-r--r--arch/x86/include/asm/asm.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 2bec0c89a95c..975ae7a9397e 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -213,6 +213,17 @@ static __always_inline __pure void *rip_rel_ptr(void *p)
/* For C file, we already have NOKPROBE_SYMBOL macro */
+/* Insert a comma if args are non-empty */
+#define COMMA(x...) __COMMA(x)
+#define __COMMA(...) , ##__VA_ARGS__
+
+/*
+ * Combine multiple asm inline constraint args into a single arg for passing to
+ * another macro.
+ */
+#define ASM_OUTPUT(x...) x
+#define ASM_INPUT(x...) x
+
/*
* This output constraint should be used for any inline asm which has a "call"
* instruction. Otherwise the asm may be inserted before the frame pointer