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