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 28