| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |