1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASMARM_TRAP_H 3 #define _ASMARM_TRAP_H 4 5 #include <linux/list.h> 6 7 struct pt_regs; 8 struct task_struct; 9 10 struct undef_hook { 11 struct list_head node; 12 u32 instr_mask; 13 u32 instr_val; 14 u32 cpsr_mask; 15 u32 cpsr_val; 16 int (*fn)(struct pt_regs *regs, unsigned int instr); 17 }; 18 19 void register_undef_hook(struct undef_hook *hook); 20 void unregister_undef_hook(struct undef_hook *hook); 21 22 static inline int __in_irqentry_text(unsigned long ptr) 23 { 24 extern char __irqentry_text_start[]; 25 extern char __irqentry_text_end[]; 26 27 return ptr >= (unsigned long)&__irqentry_text_start && 28 ptr < (unsigned long)&__irqentry_text_end; 29 } 30 31 extern void __init early_trap_init(void *); 32 extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame); 33 extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs); 34 35 extern void *vectors_page; 36 37 #endif 38