arch/sparc/kernel/process.c

/* */
This source file includes following definitions.
ret_from_sys_call
sys_idle
start_thread
exit_thread
flush_thread
copy_thread
dump_thread
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"); }
     /*  */
  27 
  28 /*
  29  * The idle loop on a i386..
  30  */
  31 asmlinkage int sys_idle(void)
     /*  */
  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                 if (!need_resched)
  43                         __asm__("nop");
  44                 schedule();
  45         }
  46 }
  47 
  48 /*
  49  * Do necessary setup to start up a newly executed thread.
  50  */
  51 void start_thread(struct pt_regs * regs, unsigned long sp, unsigned long fp)
     /*  */
  52 {
  53         regs->sp = sp;
  54         regs->fp = fp;
  55 }
  56 
  57 /*
  58  * Free current thread data structures etc..
  59  */
  60 void exit_thread(void)
     /*  */
  61 {
  62   return; /* i'm getting to it */
  63 }
  64 
  65 void flush_thread(void)
     /*  */
  66 {
  67   return;
  68 }
  69 
  70 unsigned long copy_thread(int nr, unsigned long clone_flags, struct task_struct * p, struct pt_regs * regs)
     /*  */
  71 {
  72         struct pt_regs * childregs;
  73 
  74         childregs = ((struct pt_regs *) (p->kernel_stack_page + PAGE_SIZE)) - 1;
  75         p->tss.usp = (unsigned long) childregs;
  76         *childregs = *regs;
  77         p->tss.psr = regs->psr; /* for condition codes */
  78         return clone_flags;
  79 }
  80 
  81 /*
  82  * fill in the user structure for a core dump..
  83  */
  84 void dump_thread(struct pt_regs * regs, struct user * dump)
     /*  */
  85 {
  86   return; /* solaris does this enough */
  87 }
  88 
  89 /*
  90  * sys_execve() executes a new program.
  91  */
  92 asmlinkage int sys_execve(struct pt_regs regs)
     /*  */
  93 {
  94         int error;
  95         char * filename;
  96 
  97         error = do_execve(filename, (char **) regs.u_regs[0], 
  98                           (char **) regs.u_regs[1], &regs);
  99         putname(filename);
 100         return error;
 101 }
/* */
root/arch/sparc/kernel/process.c

DEFINITIONS
