1#ifndef _ASMARM_TRAP_H
 2#define _ASMARM_TRAP_H
 3
 
 4#include <linux/list.h>
 5
 6struct pt_regs;
 7struct task_struct;
 8
 9struct undef_hook {
10	struct list_head node;
11	u32 instr_mask;
12	u32 instr_val;
13	u32 cpsr_mask;
14	u32 cpsr_val;
15	int (*fn)(struct pt_regs *regs, unsigned int instr);
16};
17
18void register_undef_hook(struct undef_hook *hook);
19void unregister_undef_hook(struct undef_hook *hook);
20
21#ifdef CONFIG_FUNCTION_GRAPH_TRACER
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#else
31static inline int __in_irqentry_text(unsigned long ptr)
32{
33	return 0;
34}
35#endif
36
37static inline int in_exception_text(unsigned long ptr)
38{
39	extern char __exception_text_start[];
40	extern char __exception_text_end[];
41	int in;
42
43	in = ptr >= (unsigned long)&__exception_text_start &&
44	     ptr < (unsigned long)&__exception_text_end;
45
46	return in ? : __in_irqentry_text(ptr);
47}
48
49extern void __init early_trap_init(void *);
50extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
51extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs);
52
53extern void *vectors_page;
 
 
 
 
 
 
 
 
 
54
55#endif

 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
 8struct pt_regs;
 9struct task_struct;
10
11struct 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
20void register_undef_hook(struct undef_hook *hook);
21void unregister_undef_hook(struct undef_hook *hook);
22
 
23static 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
32extern void early_trap_init(void *);
33extern void dump_backtrace_entry(unsigned long where, unsigned long from,
34				 unsigned long frame, const char *loglvl);
35extern void ptrace_break(struct pt_regs *regs);
 
 
 
 
 
36
37extern void *vectors_page;
38
39asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl);
40asmlinkage void do_undefinstr(struct pt_regs *regs);
41asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs);
42asmlinkage void bad_mode(struct pt_regs *regs, int reason);
43asmlinkage int arm_syscall(int no, struct pt_regs *regs);
44asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs);
45asmlinkage void __div0(void);
46asmlinkage void handle_bad_stack(struct pt_regs *regs);
47
48#endif