switch_to_64.h

Go to the documentation of this file.

/*
 * Copyright (C) 2000, 2001  Paolo Alberelli
 * Copyright (C) 2003  Paul Mundt
 * Copyright (C) 2004  Richard Curnow
 *
 * 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.
 */
#ifndef __ASM_SH_SWITCH_TO_64_H
#define __ASM_SH_SWITCH_TO_64_H

struct thread_struct;
struct task_struct;

/*
 *  switch_to() should switch tasks to task nr n, first
 */
struct task_struct *sh64_switch_to(struct task_struct *prev,
                   struct thread_struct *prev_thread,
                   struct task_struct *next,
                   struct thread_struct *next_thread);

#define switch_to(prev,next,last)               \
do {                                \
    if (last_task_used_math != next) {          \
        struct pt_regs *regs = next->thread.uregs;  \
        if (regs) regs->sr |= SR_FD;            \
    }                           \
    last = sh64_switch_to(prev, &prev->thread, next,    \
                  &next->thread);           \
} while (0)


#endif /* __ASM_SH_SWITCH_TO_64_H */