1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1996, 1997, 1998, 2001 by Ralf Baechle 7 */ 8 #ifndef _ASM_BRANCH_H 9 #define _ASM_BRANCH_H 10 11 #include <asm/ptrace.h> 12 13 static inline int delay_slot(struct pt_regs *regs) 14 { 15 return regs->cp0_cause & CAUSEF_BD; 16 } 17 18 static inline unsigned long exception_epc(struct pt_regs *regs) 19 { 20 if (!delay_slot(regs)) 21 return regs->cp0_epc; 22 23 return regs->cp0_epc + 4; 24 } 25 26 extern int __compute_return_epc(struct pt_regs *regs); 27 28 static inline int compute_return_epc(struct pt_regs *regs) 29 { 30 if (!delay_slot(regs)) { 31 regs->cp0_epc += 4; 32 return 0; 33 } 34 35 return __compute_return_epc(regs); 36 } 37 38 #endif /* _ASM_BRANCH_H */ 39