1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASMARM_TRAP_H 3#define _ASMARM_TRAP_H 4 5#include <linux/list.h> 6 7struct pt_regs; 8struct task_struct; 9 10struct 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 19void register_undef_hook(struct undef_hook *hook); 20void unregister_undef_hook(struct undef_hook *hook); 21 22static 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 31extern void __init early_trap_init(void *); 32extern void dump_backtrace_entry(unsigned long where, unsigned long from, 33 unsigned long frame, const char *loglvl); 34extern void ptrace_break(struct pt_regs *regs); 35 36extern void *vectors_page; 37 38asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl); 39asmlinkage void do_undefinstr(struct pt_regs *regs); 40asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs); 41asmlinkage void bad_mode(struct pt_regs *regs, int reason); 42asmlinkage int arm_syscall(int no, struct pt_regs *regs); 43asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs); 44asmlinkage void __div0(void); 45asmlinkage void handle_bad_stack(struct pt_regs *regs); 46 47#endif 48