1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_EXTABLE_H
3 #define _LINUX_EXTABLE_H
4 
5 #include <linux/stddef.h>	/* for NULL */
6 #include <linux/types.h>
7 
8 struct module;
9 struct exception_table_entry;
10 
11 const struct exception_table_entry *
12 search_extable(const struct exception_table_entry *base,
13 	       const size_t num,
14 	       unsigned long value);
15 void sort_extable(struct exception_table_entry *start,
16 		  struct exception_table_entry *finish);
17 void sort_main_extable(void);
18 void trim_init_extable(struct module *m);
19 
20 /* Given an address, look for it in the exception tables */
21 const struct exception_table_entry *search_exception_tables(unsigned long add);
22 const struct exception_table_entry *
23 search_kernel_exception_table(unsigned long addr);
24 
25 #ifdef CONFIG_MODULES
26 /* For extable.c to search modules' exception tables. */
27 const struct exception_table_entry *search_module_extables(unsigned long addr);
28 #else
29 static inline const struct exception_table_entry *
search_module_extables(unsigned long addr)30 search_module_extables(unsigned long addr)
31 {
32 	return NULL;
33 }
34 #endif /*CONFIG_MODULES*/
35 
36 #ifdef CONFIG_BPF_JIT
37 const struct exception_table_entry *search_bpf_extables(unsigned long addr);
38 #else
39 static inline const struct exception_table_entry *
search_bpf_extables(unsigned long addr)40 search_bpf_extables(unsigned long addr)
41 {
42 	return NULL;
43 }
44 #endif
45 
46 #endif /* _LINUX_EXTABLE_H */
47