arch/x86/um/fault.c

   1 /*
   2  * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include <arch.h>
   7 #include <sysdep/ptrace.h>
   8
   9 /* These two are from asm-um/uaccess.h and linux/module.h, check them. */
  10 struct exception_table_entry
  11 {
  12         unsigned long insn;
  13         unsigned long fixup;
  14 };
  15
  16 const struct exception_table_entry *search_exception_tables(unsigned long add);
  17
  18 /* Compare this to arch/i386/mm/extable.c:fixup_exception() */
  19 int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
  20 {
  21         const struct exception_table_entry *fixup;
  22
  23         fixup = search_exception_tables(address);
  24         if (fixup) {
  25                 UPT_IP(regs) = fixup->fixup;
  26                 return 1;
  27         }
  28         return 0;
  29 }