root/arch/sparc/kernel/process.c

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DEFINITIONS

This source file includes following definitions.
  1. ret_from_sys_call
  2. sys_idle
  3. hard_reset_now
  4. start_thread
  5. exit_thread
  6. flush_thread
  7. copy_thread
  8. dump_thread
  9. sys_execve

   1 /*
   2  *  linux/arch/i386/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 
  26 void ret_from_sys_call(void) { __asm__("nop"); }
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  27 
  28 /*
  29  * The idle loop on a i386..
  30  */
  31 asmlinkage int sys_idle(void)
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  32 {
  33         if (current->pid != 0)
  34                 return -EPERM;
  35 
  36         /* Map out the low memory: it's no longer needed */
  37         /* Sparc version RSN */
  38 
  39         /* endless idle loop with no priority at all */
  40         current->counter = -100;
  41         for (;;) {
  42                 schedule();
  43         }
  44 }
  45 
  46 void hard_reset_now(void)
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  47 {
  48         halt();
  49 }
  50 
  51 /*
  52  * Do necessary setup to start up a newly executed thread.
  53  */
  54 void start_thread(struct pt_regs * regs, unsigned long sp, unsigned long fp)
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  55 {
  56         regs->sp = sp;
  57         regs->fp = fp;
  58 }
  59 
  60 /*
  61  * Free current thread data structures etc..
  62  */
  63 void exit_thread(void)
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  64 {
  65   halt();
  66 }
  67 
  68 void flush_thread(void)
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  69 {
  70   halt();
  71 }
  72 
  73 unsigned long copy_thread(int nr, unsigned long clone_flags, struct task_struct * p, struct pt_regs * regs)
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  74 {
  75         struct pt_regs * childregs;
  76 
  77         childregs = ((struct pt_regs *) (p->kernel_stack_page + PAGE_SIZE)) - 1;
  78         p->tss.usp = (unsigned long) childregs;
  79         *childregs = *regs;
  80         p->tss.psr = regs->psr; /* for condition codes */
  81         return clone_flags;
  82 }
  83 
  84 /*
  85  * fill in the user structure for a core dump..
  86  */
  87 void dump_thread(struct pt_regs * regs, struct user * dump)
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  88 {
  89   return; /* solaris does this enough */
  90 }
  91 
  92 /*
  93  * sys_execve() executes a new program.
  94  */
  95 asmlinkage int sys_execve(struct pt_regs regs)
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  96 {
  97   halt();
  98   return 0;
  99 }
 100 

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