arch/cris/kernel/process.c

   1 /*
   2  *  linux/arch/cris/kernel/process.c
   3  *
   4  *  Copyright (C) 1995  Linus Torvalds
   5  *  Copyright (C) 2000-2002  Axis Communications AB
   6  *
   7  *  Authors:   Bjorn Wesen (bjornw@axis.com)
   8  *
   9  */
  10
  11 /*
  12  * This file handles the architecture-dependent parts of process handling..
  13  */
  14
  15 #include <linux/atomic.h>
  16 #include <asm/pgtable.h>
  17 #include <linux/uaccess.h>
  18 #include <asm/irq.h>
  19 #include <linux/module.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/init_task.h>
  22 #include <linux/sched.h>
  23 #include <linux/sched/task.h>
  24 #include <linux/fs.h>
  25 #include <linux/user.h>
  26 #include <linux/elfcore.h>
  27 #include <linux/mqueue.h>
  28 #include <linux/reboot.h>
  29 #include <linux/rcupdate.h>
  30
  31 //#define DEBUG
  32
  33 extern void default_idle(void);
  34
  35 void (*pm_power_off)(void);
  36 EXPORT_SYMBOL(pm_power_off);
  37
  38 void arch_cpu_idle(void)
  39 {
  40         default_idle();
  41 }
  42
  43 void hard_reset_now (void);
  44
  45 void machine_restart(char *cmd)
  46 {
  47         hard_reset_now();
  48 }
  49
  50 /*
  51  * Similar to machine_power_off, but don't shut off power.  Add code
  52  * here to freeze the system for e.g. post-mortem debug purpose when
  53  * possible.  This halt has nothing to do with the idle halt.
  54  */
  55
  56 void machine_halt(void)
  57 {
  58 }
  59
  60 /* If or when software power-off is implemented, add code here.  */
  61
  62 void machine_power_off(void)
  63 {
  64 }
  65
  66 /*
  67  * When a process does an "exec", machine state like FPU and debug
  68  * registers need to be reset.  This is a hook function for that.
  69  * Currently we don't have any such state to reset, so this is empty.
  70  */
  71
  72 void flush_thread(void)
  73 {
  74 }
  75
  76 /* Fill in the fpu structure for a core dump. */
  77 int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
  78 {
  79         return 0;
  80 }