arch/arm/mm/extable.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  linux/arch/arm/mm/extable.c
   4  */
   5 #include <linux/extable.h>
   6 #include <linux/uaccess.h>
   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));
  13         if (fixup) {
  14                 regs->ARM_pc = fixup->fixup;
  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         }
  20
  21         return fixup != NULL;
  22 }