| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 1996, 1997, 1998, 2001 by Ralf Baechle |
| */ |
| #ifndef _ASM_BRANCH_H |
| #define _ASM_BRANCH_H |
| |
| #include <asm/ptrace.h> |
| #include <asm/inst.h> |
| |
| static inline int delay_slot(struct pt_regs *regs) |
| { |
| return regs->cp0_cause & CAUSEF_BD; |
| } |
| |
| static inline unsigned long exception_epc(struct pt_regs *regs) |
| { |
| if (!delay_slot(regs)) |
| return regs->cp0_epc; |
| |
| return regs->cp0_epc + 4; |
| } |
| |
| #define BRANCH_LIKELY_TAKEN 0x0001 |
| |
| extern int __compute_return_epc(struct pt_regs *regs); |
| extern int __compute_return_epc_for_insn(struct pt_regs *regs, |
| union mips_instruction insn); |
| |
| static inline int compute_return_epc(struct pt_regs *regs) |
| { |
| if (!delay_slot(regs)) { |
| regs->cp0_epc += 4; |
| return 0; |
| } |
| |
| return __compute_return_epc(regs); |
| } |
| |
| #endif /* _ASM_BRANCH_H */ |
