include/asm-mips64/branch.h

   1 /* $Id$
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Branch and jump emulation.
   8  *
   9  * Copyright (C) 1996, 1997, 1998, 1999 by Ralf Baechle
  10  */
  11 #include <asm/ptrace.h>
  12
  13 extern inline int delay_slot(struct pt_regs *regs)
  14 {
  15         return regs->cp0_cause & CAUSEF_BD;
  16 }
  17
  18 extern int __compute_return_epc(struct pt_regs *regs);
  19
  20 extern inline int compute_return_epc(struct pt_regs *regs)
  21 {
  22         if (!delay_slot(regs)) {
  23                 regs->cp0_epc += 4;
  24                 return 0;
  25         }
  26
  27         return __compute_return_epc(regs);
  28 }