Subversion Repositories openrisc_2011-10-31

/*

 * io-system.c --

 *

 * Copyright (c) 2006 CodeSourcery Inc

 *

 * The authors hereby grant permission to use, copy, modify, distribute,

 * and license this software and its documentation for any purpose, provided

 * that existing copyright notices are retained in all copies and that this

 * notice is included verbatim in any distributions. No written agreement,

 * license, or royalty fee is required for any of the authorized uses.

 * Modifications to this software may be copyrighted by their authors

 * and need not follow the licensing terms described here, provided that

 * the new terms are clearly indicated on the first page of each file where

 * they apply.

 */

#include <stdlib.h>

#include <string.h>

#include <errno.h>

#include <sys/wait.h>

#define IO _system

#include "io.h"

/*

 * system: execute command on (remote) host

 * input parameters:

 *   0 : command ptr

 *   1 : command length

 * output parameters:

 *   0 : result

 *   1 : errno

 */

int _system (const char *command)

{

#if HOSTED

  int e;

  gdb_parambuf_t parameters;

  parameters[0] = (uint32_t) command;

  parameters[1] = command ? (uint32_t) strlen (command) + 1 : 0;

  __hosted (HOSTED_SYSTEM, parameters);

  errno = __hosted_from_gdb_errno (parameters[1]);

  e = parameters[0];

  if (e >= 0 && command)

    {

      /* We have to convert e, an exit status to the encoded status of

         the command.  To avoid hard coding the exit status, we simply

         loop until we find the right position.  */

      int exit_code;

      for (exit_code = e; e && WEXITSTATUS (e) != exit_code; e <<= 1)

        continue;

    }

  return e;

#else

  if (!command)

    return 0;

  errno = ENOSYS;

  return -1;

#endif

}