| 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 |