xref: /OK3568_Linux_fs/kernel/arch/riscv/mm/extable.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
4*4882a593Smuzhiyun  *  Lennox Wu <lennox.wu@sunplusct.com>
5*4882a593Smuzhiyun  *  Chen Liqin <liqin.chen@sunplusct.com>
6*4882a593Smuzhiyun  * Copyright (C) 2013 Regents of the University of California
7*4882a593Smuzhiyun  */
8*4882a593Smuzhiyun 
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #include <linux/extable.h>
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun #include <linux/uaccess.h>
13*4882a593Smuzhiyun 
fixup_exception(struct pt_regs * regs)14*4882a593Smuzhiyun int fixup_exception(struct pt_regs *regs)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun 	const struct exception_table_entry *fixup;
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun 	fixup = search_exception_tables(regs->epc);
19*4882a593Smuzhiyun 	if (fixup) {
20*4882a593Smuzhiyun 		regs->epc = fixup->fixup;
21*4882a593Smuzhiyun 		return 1;
22*4882a593Smuzhiyun 	}
23*4882a593Smuzhiyun 	return 0;
24*4882a593Smuzhiyun }
25