text: /*
   * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
   * Licensed under the GPL
   */
  
  #include "linux/slab.h"
  #include "linux/smp_lock.h"
  #include "linux/ptrace.h"
  #include "asm/ptrace.h"
  #include "asm/pgtable.h"
  #include "asm/tlbflush.h"
  #include "asm/uaccess.h"
  #include "kern_util.h"
  #include "as-layout.h"
  #include "mem_user.h"
  #include "kern.h"
  #include "irq_user.h"
  #include "tlb.h"
  #include "os.h"
  #include "choose-mode.h"
  #include "mode_kern.h"
  
  void flush_thread(void)
  {
  	arch_flush_thread(&current->thread.arch);
  	CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());
  }
  
  void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
  {
  	CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
  }
  
  #ifdef CONFIG_TTY_LOG
  extern void log_exec(char **argv, void *tty);
  #endif
  
  static long execve1(char *file, char __user * __user *argv,
  		    char __user *__user *env)
  {
          long error;
  #ifdef CONFIG_TTY_LOG
  	struct tty_struct *tty;
  
  	mutex_lock(&tty_mutex);
  	tty = get_current_tty();
  	if (tty)
  		log_exec(argv, tty);
  	mutex_unlock(&tty_mutex);
  #endif
          error = do_execve(file, argv, env, &current->thread.regs);
          if (error == 0){
  		task_lock(current);
                  current->ptrace &= ~PT_DTRACE;
  #ifdef SUBARCH_EXECVE1
  		SUBARCH_EXECVE1(&current->thread.regs.regs);
  #endif
  		task_unlock(current);
                  set_cmdline(current_cmd());
          }
          return(error);
  }
  
  long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
  {
  	long err;
  
  	err = execve1(file, argv, env);
  	if(!err)
  		do_longjmp(current->thread.exec_buf, 1);
  	return(err);
  }
  
  long sys_execve(char __user *file, char __user *__user *argv,
  		char __user *__user *env)
  {
  	long error;
  	char *filename;
  
  	lock_kernel();
  	filename = getname(file);
  	error = PTR_ERR(filename);
  	if (IS_ERR(filename)) goto out;
  	error = execve1(filename, argv, env);
  	putname(filename);
   out:
  	unlock_kernel();
  	return(error);
  }
  