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
13static inline int delay_slot(struct pt_regs *regs)
14{
15	return regs->cp0_cause & CAUSEF_BD;
16}
17
18static 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
 
 
26extern int __compute_return_epc(struct pt_regs *regs);
 
 
27
28static 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 */

 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#include <asm/inst.h>
13
14static inline int delay_slot(struct pt_regs *regs)
15{
16	return regs->cp0_cause & CAUSEF_BD;
17}
18
19static inline unsigned long exception_epc(struct pt_regs *regs)
20{
21	if (!delay_slot(regs))
22		return regs->cp0_epc;
23
24	return regs->cp0_epc + 4;
25}
26
27#define BRANCH_LIKELY_TAKEN 0x0001
28
29extern int __compute_return_epc(struct pt_regs *regs);
30extern int __compute_return_epc_for_insn(struct pt_regs *regs,
31					 union mips_instruction insn);
32
33static inline int compute_return_epc(struct pt_regs *regs)
34{
35	if (!delay_slot(regs)) {
36		regs->cp0_epc += 4;
37		return 0;
38	}
39
40	return __compute_return_epc(regs);
41}
42
43#endif /* _ASM_BRANCH_H */