root/arch/alpha/kernel/process.c

/* */

DEFINITIONS

1. sys_idle
2. hard_reset_now
3. show_regs
4. exit_thread
5. flush_thread
6. copy_thread
7. dump_thread
8. sys_execve

   1 /*
   2  *  linux/arch/alpha/kernel/process.c
   3  *
   4  *  Copyright (C) 1995  Linus Torvalds
   5  */
   6 
   7 /*
   8  * This file handles the architecture-dependent parts of process handling..
   9  */
  10 
  11 #include <linux/errno.h>
  12 #include <linux/sched.h>
  13 #include <linux/kernel.h>
  14 #include <linux/mm.h>
  15 #include <linux/stddef.h>
  16 #include <linux/unistd.h>
  17 #include <linux/ptrace.h>
  18 #include <linux/malloc.h>
  19 #include <linux/ldt.h>
  20 #include <linux/user.h>
  21 #include <linux/a.out.h>
  22 
  23 #include <asm/segment.h>
  24 #include <asm/system.h>
  25 #include <asm/io.h>
  26 
  27 asmlinkage int sys_idle(void)
     /*  */
  28 {
  29         if (current->pid != 0)
  30                 return -EPERM;
  31 
  32         /* endless idle loop with no priority at all */
  33         current->counter = -100;
  34         for (;;) {
  35                 schedule();
  36         }
  37 }
  38 
  39 void hard_reset_now(void)
     /*  */
  40 {
  41         halt();
  42 }
  43 
  44 void show_regs(struct pt_regs * regs)
     /*  */
  45 {
  46         printk("\nPS: %04lx PC: %016lx\n", regs->ps, regs->pc);
  47 }
  48 
  49 /*
  50  * Free current thread data structures etc..
  51  */
  52 void exit_thread(void)
     /*  */
  53 {
  54         halt();
  55 }
  56 
  57 void flush_thread(void)
     /*  */
  58 {
  59         halt();
  60 }
  61 
  62 /*
  63  * This needs lots of work still..
  64  */
  65 unsigned long copy_thread(int nr, unsigned long clone_flags, struct task_struct * p, struct pt_regs * regs)
     /*  */
  66 {
  67         struct pt_regs * childregs;
  68 
  69         p->tss.usp = rdusp();
  70         childregs = ((struct pt_regs *) (p->kernel_stack_page + PAGE_SIZE)) - 1;
  71         *childregs = *regs;
  72         p->tss.ksp = (unsigned long) childregs;
  73 /*      p->tss.pc = XXXX; */
  74         halt();
  75         return clone_flags;
  76 }
  77 
  78 /*
  79  * fill in the user structure for a core dump..
  80  */
  81 void dump_thread(struct pt_regs * regs, struct user * dump)
     /*  */
  82 {
  83 }
  84 
  85 /*
  86  * sys_execve() executes a new program.
  87  */
  88 asmlinkage int sys_execve(struct pt_regs regs)
     /*  */
  89 {
  90         halt();
  91         return 0;
  92 }

/* */