| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | #ifndef _ASMARM_TRAP_H |
| 2 | #define _ASMARM_TRAP_H |
| 3 | |
| 4 | #include <linux/list.h> |
| 5 | |
| 6 | struct pt_regs; |
| 7 | struct task_struct; |
| 8 | |
| 9 | struct 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 | |
| 18 | void register_undef_hook(struct undef_hook *hook); |
| 19 | void unregister_undef_hook(struct undef_hook *hook); |
| 20 | |
| 21 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
| 22 | static 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 |
| 31 | static inline int __in_irqentry_text(unsigned long ptr) |
| 32 | { |
| 33 | return 0; |
| 34 | } |
| 35 | #endif |
| 36 | |
| 37 | static 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 | |
| 49 | extern void __init early_trap_init(void *); |
| 50 | extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame); |
| 51 | extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs); |
| 52 | |
| 53 | extern void *vectors_page; |
| 54 | |
| 55 | #endif |