arch/sh/include/asm/switch_to_64.h

   1 /* SPDX-License-Identifier: GPL-2.0
   2  *
   3  * Copyright (C) 2000, 2001  Paolo Alberelli
   4  * Copyright (C) 2003  Paul Mundt
   5  * Copyright (C) 2004  Richard Curnow
   6  */
   7 #ifndef __ASM_SH_SWITCH_TO_64_H
   8 #define __ASM_SH_SWITCH_TO_64_H
   9
  10 struct thread_struct;
  11 struct task_struct;
  12
  13 /*
  14  *      switch_to() should switch tasks to task nr n, first
  15  */
  16 struct task_struct *sh64_switch_to(struct task_struct *prev,
  17                                    struct thread_struct *prev_thread,
  18                                    struct task_struct *next,
  19                                    struct thread_struct *next_thread);
  20
  21 #define switch_to(prev,next,last)                               \
  22 do {                                                            \
  23         if (last_task_used_math != next) {                      \
  24                 struct pt_regs *regs = next->thread.uregs;      \
  25                 if (regs) regs->sr |= SR_FD;                    \
  26         }                                                       \
  27         last = sh64_switch_to(prev, &prev->thread, next,        \
  28                               &next->thread);                   \
  29 } while (0)
  30
  31
  32 #endif /* __ASM_SH_SWITCH_TO_64_H */