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/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be found in
* the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id: rtems_init.c,v 1.2 2007/09/17 20:46:23 joel Exp $
*/
#define MAIN_USE_NETWORKING
#define MAIN_USE_REQUIRES_COMMAND_LINE
#include <bsp.h>
#include <assert.h>
#include <pthread.h>
#include <stdlib.h>
#include <rtems/rtems_bsdnet.h>
#include "rtems_networkconfig.h"
extern rtems_configuration_table BSP_Configuration;
/*
* Using GNAT's Distributed Systems Annex support requires
* each node in the system to have different pid's. In a
* single CPU RTEMS system, it is always one. This lets the
* user override the RTEMS default.
*/
#ifdef GNAT_PID
#include <unistd.h>
pid_t getpid()
{
return GNAT_PID;
}
#endif
static int argc = 1;
static char arg0[20] = "rtems";
static char *argv[20] = { arg0 };
#if defined(MAIN_USE_REQUIRES_COMMAND_LINE)
#define COMMAND_LINE_MAXIMUM 200
#include <stdio.h>
#include <ctype.h>
void parse_arguments(
char *buffer,
size_t maximum_length
)
{
char *cp;
char *linebuf = buffer;
size_t length;
for (;;) {
/*
* Set up first argument
*/
#if 0
argc = 1;
strcpy (arg0, "rtems");
argv[0] = arg0;
#endif
#if (defined (MAIN_COMMAND_LINE))
strncpy (linebuf, MAIN_COMMAND_LINE, maximum_length);
#else
/*
* Read a line
*/
printf (">>> %s ", argv[0]);
fflush (stdout);
fgets (linebuf, maximum_length, stdin);
length = strnlen( linebuf, maximum_length );
if ( linebuf[length - 1] == '\n' || linebuf[length - 1] == '\r' ) {
linebuf[length - 1] = '\0';
}
#endif
/*
* Break line into arguments
*/
cp = linebuf;
for (;;) {
while (isspace (*cp))
*cp++ = '\0';
if (*cp == '\0')
break;
if (argc >= ((sizeof argv / sizeof argv[0]) - 1)) {
printf ("Too many arguments.\n");
argc = 0;
break;
}
argv[argc++] = cp;
while (!isspace (*cp)) {
if (*cp == '\0')
break;
cp++;
}
}
if (argc > 1) {
argv[argc] = NULL;
break;
}
printf ("You must give some arguments!\n");
}
#if 0
{
int i;
for (i=0; i<argc ; i++ ) {
printf( "argv[%d] = ***%s***\n", i, argv[i] );
}
printf( "\n" );
}
#endif
}
#endif
/*
* By having the POSIX_Init thread create a second thread just
* to invoke gnat_main, we can override all default attributes
* of the "Ada environment task". Otherwise, we would be
* stuck with the defaults set by RTEMS.
*/
void *start_gnat_main( void * argument )
{
extern int gnat_main ( int argc, char **argv, char **envp );
/*
* This is scoped to match the Ada program.
*/
char command_line[ COMMAND_LINE_MAXIMUM ];
#if defined(MAIN_USE_REQUIRES_COMMAND_LINE)
parse_arguments( command_line, COMMAND_LINE_MAXIMUM );
#endif
(void) gnat_main ( argc, argv, 0 );
exit( 0 );
return 0;
}
#ifndef GNAT_MAIN_STACKSPACE
#define GNAT_MAIN_STACKSPACE 0
#endif
void *POSIX_Init( void *argument )
{
pthread_t thread_id;
pthread_attr_t attr;
size_t stacksize;
int status;
extern size_t _ada_pthread_minimum_stack_size();
#if defined(MAIN_USE_NETWORKING)
printk("Initializing Network\n");
rtems_bsdnet_initialize_network ();
#endif
status = pthread_attr_init( &attr );
assert( !status );
stacksize = GNAT_MAIN_STACKSPACE * 1024;
if ( stacksize < _ada_pthread_minimum_stack_size() )
stacksize = _ada_pthread_minimum_stack_size();
status = pthread_attr_setstacksize( &attr, stacksize );
assert( !status );
status = pthread_create( &thread_id, &attr, start_gnat_main, NULL );
assert( !status );
pthread_exit( 0 );
return 0;
}
/* configuration information */
/* Standard output and a clock tick so time passes */
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
/* We need to be able to create sockets */
#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 20
/* This is overkill but is definitely enough to run the network stack */
#define CONFIGURE_MAXIMUM_TASKS 20
#define CONFIGURE_MAXIMUM_SEMAPHORES 20
/* We want a clock tick every millisecond */
#define CONFIGURE_MICROSECONDS_PER_TICK RTEMS_MILLISECONDS_TO_MICROSECONDS(1)
/* The initialization task is a POSIX Initialization thread with default attributes */
#define CONFIGURE_POSIX_INIT_THREAD_TABLE
/* We are using GNAT/RTEMS with a maximum of 20 Ada tasks and no fake Ada tasks. */
/* A fake Ada task is a task created outside the Ada run-time that calls into Ada. */
#define CONFIGURE_GNAT_RTEMS
#define CONFIGURE_MAXIMUM_ADA_TASKS 20
#define CONFIGURE_MAXIMUM_FAKE_ADA_TASKS 0
/* Account for any extra task stack size */
#define CONFIGURE_MEMORY_OVERHEAD (GNAT_MAIN_STACKSPACE)
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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