arch/ia64/mm/extable.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Kernel exception handling table support.  Derived from arch/alpha/mm/extable.c.
   4  *
   5  * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co
   6  *      David Mosberger-Tang <davidm@hpl.hp.com>
   7  */
   8
   9 #include <asm/ptrace.h>
  10 #include <asm/extable.h>
  11 #include <asm/errno.h>
  12 #include <asm/processor.h>
  13
  14 void
  15 ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e)
  16 {
  17         long fix = (u64) &e->fixup + e->fixup;
  18
  19         regs->r8 = -EFAULT;
  20         if (fix & 4)
  21                 regs->r9 = 0;
  22         regs->cr_iip = fix & ~0xf;
  23         ia64_psr(regs)->ri = fix & 0x3;         /* set continuation slot number */
  24 }