39 строки
794 B
C
39 строки
794 B
C
|
/*
|
||
|
|
* 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>
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern int __compute_return_epc(struct pt_regs *regs);
|
||
|
|
|
||
|
|
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 */
|