1 #include <asm/interrupt.h>
2 #include <asm/kprobes.h>
3
4 struct soft_mask_table_entry {
5 unsigned long start;
6 unsigned long end;
7 };
8
9 struct restart_table_entry {
10 unsigned long start;
11 unsigned long end;
12 unsigned long fixup;
13 };
14
15 extern struct soft_mask_table_entry __start___soft_mask_table[];
16 extern struct soft_mask_table_entry __stop___soft_mask_table[];
17
18 extern struct restart_table_entry __start___restart_table[];
19 extern struct restart_table_entry __stop___restart_table[];
20
21 /* Given an address, look for it in the soft mask table */
22 bool search_kernel_soft_mask_table(unsigned long addr)
23 {
24 struct soft_mask_table_entry *smte = __start___soft_mask_table;
25
26 while (smte < __stop___soft_mask_table) {
27 unsigned long start = smte->start;
28 unsigned long end = smte->end;
29
30 if (addr >= start && addr < end)
31 return true;
32
33 smte++;
34 }
35 return false;
36 }
37 NOKPROBE_SYMBOL(search_kernel_soft_mask_table);
38
39 /* Given an address, look for it in the kernel exception table */
40 unsigned long search_kernel_restart_table(unsigned long addr)
41 {
42 struct restart_table_entry *rte = __start___restart_table;
43
44 while (rte < __stop___restart_table) {
45 unsigned long start = rte->start;
46 unsigned long end = rte->end;
47 unsigned long fixup = rte->fixup;
48
49 if (addr >= start && addr < end)
50 return fixup;
51
52 rte++;
53 }
54 return 0;
55 }
56 NOKPROBE_SYMBOL(search_kernel_restart_table);
57
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