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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASMARM_TRAP_H
#define _ASMARM_TRAP_H
#include <linux/linkage.h>
#include <linux/list.h>
struct pt_regs;
struct task_struct;
struct undef_hook {
struct list_head node;
u32 instr_mask;
u32 instr_val;
u32 cpsr_mask;
u32 cpsr_val;
int (*fn)(struct pt_regs *regs, unsigned int instr);
};
void register_undef_hook(struct undef_hook *hook);
void unregister_undef_hook(struct undef_hook *hook);
static inline int __in_irqentry_text(unsigned long ptr)
{
extern char __irqentry_text_start[];
extern char __irqentry_text_end[];
return ptr >= (unsigned long)&__irqentry_text_start &&
ptr < (unsigned long)&__irqentry_text_end;
}
extern void early_trap_init(void *);
extern void dump_backtrace_entry(unsigned long where, unsigned long from,
unsigned long frame, const char *loglvl);
extern void ptrace_break(struct pt_regs *regs);
extern void *vectors_page;
asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl);
asmlinkage void do_undefinstr(struct pt_regs *regs);
asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs);
asmlinkage void bad_mode(struct pt_regs *regs, int reason);
asmlinkage int arm_syscall(int no, struct pt_regs *regs);
asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs);
asmlinkage void __div0(void);
asmlinkage void handle_bad_stack(struct pt_regs *regs);
#endif
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