1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_GENERIC_EXTABLE_H
3 #define __ASM_GENERIC_EXTABLE_H
4
5 /*
6 * The exception table consists of pairs of addresses: the first is the
7 * address of an instruction that is allowed to fault, and the second is
8 * the address at which the program should continue. No registers are
9 * modified, so it is entirely up to the continuation code to figure out
10 * what to do.
11 *
12 * All the routines below use bits of fixup code that are out of line
13 * with the main instruction path. This means when everything is well,
14 * we don't even have to jump over them. Further, they do not intrude
15 * on our cache or tlb entries.
16 */
17
18 struct exception_table_entry
19 {
20 unsigned long insn, fixup;
21 };
22
23
24 struct pt_regs;
25 extern int fixup_exception(struct pt_regs *regs);
26
27 #endif