[mirror_ubuntu-bionic-kernel.git] / include / asm-mips / branch.h

/*
 * 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 */
Commit	Line	Data
1da177e4 LT	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 */