arch/arm/include/asm/traps.h

   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