arch/riscv/mm/extable.c


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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
 *  Lennox Wu <lennox.wu@sunplusct.com>
 *  Chen Liqin <liqin.chen@sunplusct.com>
 * Copyright (C) 2013 Regents of the University of California
 */


#include <linux/extable.h>
#include <linux/module.h>
#include <linux/uaccess.h>

bool fixup_exception(struct pt_regs *regs)
{
	const struct exception_table_entry *ex;

	ex = search_exception_tables(regs->epc);
	if (!ex)
		return false;

	if (regs->epc >= BPF_JIT_REGION_START && regs->epc < BPF_JIT_REGION_END)
		return rv_bpf_fixup_exception(ex, regs);

	regs->epc = (unsigned long)&ex->fixup + ex->fixup;
	return true;
}