1 files changed, 50 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/jump_label.h b/arch/loongarch/include/asm/jump_label.h
new file mode 100644
index 000000000000..3cea299a5ef5
--- /dev/null
+++ b/arch/loongarch/include/asm/jump_label.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ *
+ * Based on arch/arm64/include/asm/jump_label.h
+ */
+#ifndef __ASM_JUMP_LABEL_H
+#define __ASM_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+#define JUMP_LABEL_NOP_SIZE	4
+
+#define JUMP_TABLE_ENTRY				\
+	 ".pushsection	__jump_table, \"aw\"	\n\t"	\
+	 ".align	3			\n\t"	\
+	 ".long		1b - ., %l[l_yes] - .	\n\t"	\
+	 ".quad		%0 - .			\n\t"	\
+	 ".popsection				\n\t"
+
+static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch)
+{
+	asm_volatile_goto(
+		"1:	nop			\n\t"
+		JUMP_TABLE_ENTRY
+		:  :  "i"(&((char *)key)[branch]) :  : l_yes);
+
+	return false;
+
+l_yes:
+	return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch)
+{
+	asm_volatile_goto(
+		"1:	b	%l[l_yes]	\n\t"
+		JUMP_TABLE_ENTRY
+		:  :  "i"(&((char *)key)[branch]) :  : l_yes);
+
+	return false;
+
+l_yes:
+	return true;
+}
+
+#endif  /* __ASSEMBLY__ */
+#endif	/* __ASM_JUMP_LABEL_H */