linux/arch/arm64/include/asm/extable.h
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   1#ifndef __ASM_EXTABLE_H
   2#define __ASM_EXTABLE_H
   3
   4/*
   5 * The exception table consists of pairs of relative offsets: the first
   6 * is the relative offset to an instruction that is allowed to fault,
   7 * and the second is the relative offset at which the program should
   8 * continue. No registers are modified, so it is entirely up to the
   9 * continuation code to figure out what to do.
  10 *
  11 * All the routines below use bits of fixup code that are out of line
  12 * with the main instruction path.  This means when everything is well,
  13 * we don't even have to jump over them.  Further, they do not intrude
  14 * on our cache or tlb entries.
  15 */
  16
  17struct exception_table_entry
  18{
  19        int insn, fixup;
  20};
  21
  22#define ARCH_HAS_RELATIVE_EXTABLE
  23
  24extern int fixup_exception(struct pt_regs *regs);
  25#endif
  26