| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * linux/arch/arm/mm/extable.c |
| 4 | */ |
| Paul Gortmaker | 0ea9365 | 2016-07-23 14:01:45 -0400 | [diff] [blame] | 5 | #include <linux/extable.h> |
| Russell King | 33fa9b1 | 2008-09-06 11:35:55 +0100 | [diff] [blame] | 6 | #include <linux/uaccess.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | int fixup_exception(struct pt_regs *regs) |
| 9 | { |
| 10 | const struct exception_table_entry *fixup; |
| 11 | |
| 12 | fixup = search_exception_tables(instruction_pointer(regs)); |
| Marc Zyngier | e16b31b | 2013-11-04 11:42:29 +0100 | [diff] [blame] | 13 | if (fixup) { |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | regs->ARM_pc = fixup->fixup; |
| Marc Zyngier | e16b31b | 2013-11-04 11:42:29 +0100 | [diff] [blame] | 15 | #ifdef CONFIG_THUMB2_KERNEL |
| 16 | /* Clear the IT state to avoid nasty surprises in the fixup */ |
| 17 | regs->ARM_cpsr &= ~PSR_IT_MASK; |
| 18 | #endif |
| 19 | } |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
| 21 | return fixup != NULL; |
| 22 | } |