diff options
Diffstat (limited to 'arch/frv/mm/extable.c')
| -rw-r--r-- | arch/frv/mm/extable.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/frv/mm/extable.c b/arch/frv/mm/extable.c deleted file mode 100644 index 77c0c5ba88bc..000000000000 --- a/arch/frv/mm/extable.c +++ /dev/null @@ -1,49 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/frv/mm/extable.c - */ - -#include <linux/extable.h> -#include <linux/spinlock.h> -#include <linux/uaccess.h> - -extern const void __memset_end, __memset_user_error_lr, __memset_user_error_handler; -extern const void __memcpy_end, __memcpy_user_error_lr, __memcpy_user_error_handler; -extern spinlock_t modlist_lock; - -int fixup_exception(struct pt_regs *regs) -{ - const struct exception_table_entry *extab; - unsigned long pc = regs->pc; - - /* determine if the fault lay during a memcpy_user or a memset_user */ - if (regs->lr == (unsigned long) &__memset_user_error_lr && - (unsigned long) &memset <= pc && pc < (unsigned long) &__memset_end - ) { - /* the fault occurred in a protected memset - * - we search for the return address (in LR) instead of the program counter - * - it was probably during a clear_user() - */ - regs->pc = (unsigned long) &__memset_user_error_handler; - return 1; - } - - if (regs->lr == (unsigned long) &__memcpy_user_error_lr && - (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end - ) { - /* the fault occurred in a protected memset - * - we search for the return address (in LR) instead of the program counter - * - it was probably during a copy_to/from_user() - */ - regs->pc = (unsigned long) &__memcpy_user_error_handler; - return 1; - } - - extab = search_exception_tables(pc); - if (extab) { - regs->pc = extab->fixup; - return 1; - } - - return 0; -} |