1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASMARM_TRAP_H 3 #define _ASMARM_TRAP_H 4 5 #include <linux/linkage.h> 6 #include <linux/list.h> 7 8 struct pt_regs; 9 struct task_struct; 10 11 struct undef_hook { 12 struct list_head node; 13 u32 instr_mask; 14 u32 instr_val; 15 u32 cpsr_mask; 16 u32 cpsr_val; 17 int (*fn)(struct pt_regs *regs, unsigned int instr); 18 }; 19 20 void register_undef_hook(struct undef_hook *hook); 21 void unregister_undef_hook(struct undef_hook *hook); 22 23 static inline int __in_irqentry_text(unsigned long ptr) 24 { 25 extern char __irqentry_text_start[]; 26 extern char __irqentry_text_end[]; 27 28 return ptr >= (unsigned long)&__irqentry_text_start && 29 ptr < (unsigned long)&__irqentry_text_end; 30 } 31 32 extern void early_trap_init(void *); 33 extern void dump_backtrace_entry(unsigned long where, unsigned long from, 34 unsigned long frame, const char *loglvl); 35 extern void ptrace_break(struct pt_regs *regs); 36 37 extern void *vectors_page; 38 39 asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl); 40 asmlinkage void do_undefinstr(struct pt_regs *regs); 41 asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs); 42 asmlinkage void bad_mode(struct pt_regs *regs, int reason); 43 asmlinkage int arm_syscall(int no, struct pt_regs *regs); 44 asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs); 45 asmlinkage void __div0(void); 46 asmlinkage void handle_bad_stack(struct pt_regs *regs); 47 48 #endif 49