select GPIOLIB
select HAS_IOPORT
select HAVE_ARCH_AUDITSYSCALL
+ select HAVE_ARCH_JUMP_LABEL
+ select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_MMAP_RND_BITS if MMU
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
--- /dev/null
+/* 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 */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ *
+ * Based on arch/arm64/kernel/jump_label.c
+ */
+#include <linux/kernel.h>
+#include <linux/jump_label.h>
+#include <asm/inst.h>
+
+void arch_jump_label_transform(struct jump_entry *entry, enum jump_label_type type)
+{
+ u32 insn;
+ void *addr = (void *)jump_entry_code(entry);
+
+ if (type == JUMP_LABEL_JMP)
+ insn = larch_insn_gen_b(jump_entry_code(entry), jump_entry_target(entry));
+ else
+ insn = larch_insn_gen_nop();
+
+ larch_insn_patch_text(addr, insn);
+}