162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASMARM_TRAP_H 362306a36Sopenharmony_ci#define _ASMARM_TRAP_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/list.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_cistruct pt_regs; 862306a36Sopenharmony_cistruct task_struct; 962306a36Sopenharmony_ci 1062306a36Sopenharmony_cistruct undef_hook { 1162306a36Sopenharmony_ci struct list_head node; 1262306a36Sopenharmony_ci u32 instr_mask; 1362306a36Sopenharmony_ci u32 instr_val; 1462306a36Sopenharmony_ci u32 cpsr_mask; 1562306a36Sopenharmony_ci u32 cpsr_val; 1662306a36Sopenharmony_ci int (*fn)(struct pt_regs *regs, unsigned int instr); 1762306a36Sopenharmony_ci}; 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_civoid register_undef_hook(struct undef_hook *hook); 2062306a36Sopenharmony_civoid unregister_undef_hook(struct undef_hook *hook); 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_cistatic inline int __in_irqentry_text(unsigned long ptr) 2362306a36Sopenharmony_ci{ 2462306a36Sopenharmony_ci extern char __irqentry_text_start[]; 2562306a36Sopenharmony_ci extern char __irqentry_text_end[]; 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci return ptr >= (unsigned long)&__irqentry_text_start && 2862306a36Sopenharmony_ci ptr < (unsigned long)&__irqentry_text_end; 2962306a36Sopenharmony_ci} 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ciextern void __init early_trap_init(void *); 3262306a36Sopenharmony_ciextern void dump_backtrace_entry(unsigned long where, unsigned long from, 3362306a36Sopenharmony_ci unsigned long frame, const char *loglvl); 3462306a36Sopenharmony_ciextern void ptrace_break(struct pt_regs *regs); 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ciextern void *vectors_page; 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ciasmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl); 3962306a36Sopenharmony_ciasmlinkage void do_undefinstr(struct pt_regs *regs); 4062306a36Sopenharmony_ciasmlinkage void handle_fiq_as_nmi(struct pt_regs *regs); 4162306a36Sopenharmony_ciasmlinkage void bad_mode(struct pt_regs *regs, int reason); 4262306a36Sopenharmony_ciasmlinkage int arm_syscall(int no, struct pt_regs *regs); 4362306a36Sopenharmony_ciasmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs); 4462306a36Sopenharmony_ciasmlinkage void __div0(void); 4562306a36Sopenharmony_ciasmlinkage void handle_bad_stack(struct pt_regs *regs); 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ci#endif 48