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41 lines
930 B
C
41 lines
930 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2020 Loongson Technology Co., Ltd.
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*/
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#include <linux/jump_label.h>
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#include <linux/kernel.h>
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#include <linux/memory.h>
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#include <linux/mutex.h>
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#include <linux/types.h>
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#include <linux/cpu.h>
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#include <asm/cacheflush.h>
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#include <asm/inst.h>
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void arch_jump_label_transform(struct jump_entry *e,
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enum jump_label_type type)
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{
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u32 insn, *insn_p;
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insn_p = (u32 *)e->code;
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if (type == JUMP_LABEL_JMP)
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insn = larch_insn_gen_b((unsigned long)e->code, (unsigned long)e->target);
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else
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insn = larch_insn_gen_nop();
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mutex_lock(&text_mutex);
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*insn_p = insn;
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flush_icache_range((unsigned long)insn_p,
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(unsigned long)insn_p + sizeof(*insn_p));
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mutex_unlock(&text_mutex);
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}
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