1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/arch/cris/kernel/process.c 4 * 5 * Copyright (C) 1995 Linus Torvalds 6 * Copyright (C) 2000-2002 Axis Communications AB 7 * 8 * Authors: Bjorn Wesen (bjornw@axis.com) 9 * 10 */ 11 12 /* 13 * This file handles the architecture-dependent parts of process handling.. 14 */ 15 16 #include <linux/atomic.h> 17 #include <asm/pgtable.h> 18 #include <linux/uaccess.h> 19 #include <asm/irq.h> 20 #include <linux/module.h> 21 #include <linux/spinlock.h> 22 #include <linux/init_task.h> 23 #include <linux/sched.h> 24 #include <linux/sched/task.h> 25 #include <linux/fs.h> 26 #include <linux/user.h> 27 #include <linux/elfcore.h> 28 #include <linux/mqueue.h> 29 #include <linux/reboot.h> 30 #include <linux/rcupdate.h> 31 32 //#define DEBUG 33 34 extern void default_idle(void); 35 36 void (*pm_power_off)(void); 37 EXPORT_SYMBOL(pm_power_off); 38 arch_cpu_idle(void)39void arch_cpu_idle(void) 40 { 41 default_idle(); 42 } 43 44 void hard_reset_now (void); 45 machine_restart(char * cmd)46void machine_restart(char *cmd) 47 { 48 hard_reset_now(); 49 } 50 51 /* 52 * Similar to machine_power_off, but don't shut off power. Add code 53 * here to freeze the system for e.g. post-mortem debug purpose when 54 * possible. This halt has nothing to do with the idle halt. 55 */ 56 machine_halt(void)57void machine_halt(void) 58 { 59 } 60 61 /* If or when software power-off is implemented, add code here. */ 62 machine_power_off(void)63void machine_power_off(void) 64 { 65 } 66 67 /* 68 * When a process does an "exec", machine state like FPU and debug 69 * registers need to be reset. This is a hook function for that. 70 * Currently we don't have any such state to reset, so this is empty. 71 */ 72 flush_thread(void)73void flush_thread(void) 74 { 75 } 76 77 /* Fill in the fpu structure for a core dump. */ dump_fpu(struct pt_regs * regs,elf_fpregset_t * fpu)78int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu) 79 { 80 return 0; 81 } 82