1 /* 2 * Based on arch/arm/include/asm/traps.h 3 * 4 * Copyright (C) 2012 ARM Ltd. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 #ifndef __ASM_TRAP_H 19 #define __ASM_TRAP_H 20 21 #include <linux/list.h> 22 #include <asm/sections.h> 23 24 struct pt_regs; 25 26 struct undef_hook { 27 struct list_head node; 28 u32 instr_mask; 29 u32 instr_val; 30 u64 pstate_mask; 31 u64 pstate_val; 32 int (*fn)(struct pt_regs *regs, u32 instr); 33 }; 34 35 void register_undef_hook(struct undef_hook *hook); 36 void unregister_undef_hook(struct undef_hook *hook); 37 38 void arm64_notify_segfault(struct pt_regs *regs, unsigned long addr); 39 40 static inline int __in_irqentry_text(unsigned long ptr) 41 { 42 return ptr >= (unsigned long)&__irqentry_text_start && 43 ptr < (unsigned long)&__irqentry_text_end; 44 } 45 46 static inline int in_exception_text(unsigned long ptr) 47 { 48 int in; 49 50 in = ptr >= (unsigned long)&__exception_text_start && 51 ptr < (unsigned long)&__exception_text_end; 52 53 return in ? : __in_irqentry_text(ptr); 54 } 55 56 static inline int in_entry_text(unsigned long ptr) 57 { 58 return ptr >= (unsigned long)&__entry_text_start && 59 ptr < (unsigned long)&__entry_text_end; 60 } 61 #endif 62