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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/**
* \file syscalls.c
*
* Implementation of newlib syscall.
*
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "board.h"
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
/*----------------------------------------------------------------------------
* Exported variables
*----------------------------------------------------------------------------*/
#undef errno
extern int errno ;
extern int _end ;
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
extern void _exit( int status ) ;
extern void _kill( int pid, int sig ) ;
extern int _getpid ( void ) ;
extern caddr_t _sbrk ( int incr )
{
static unsigned char *heap = NULL ;
unsigned char *prev_heap ;
if ( heap == NULL )
{
heap = (unsigned char *)&_end ;
}
prev_heap = heap;
heap += incr ;
return (caddr_t) prev_heap ;
}
extern int link( char *old, char *new )
{
return -1 ;
}
extern int _close( int file )
{
return -1 ;
}
extern int _fstat( int file, struct stat *st )
{
st->st_mode = S_IFCHR ;
return 0 ;
}
extern int _isatty( int file )
{
return 1 ;
}
extern int _lseek( int file, int ptr, int dir )
{
return 0 ;
}
extern int _read(int file, char *ptr, int len)
{
return 0 ;
}
extern int _write( int file, char *ptr, int len )
{
int iIndex ;
for ( iIndex=0 ; iIndex < len ; iIndex++, ptr++ )
{
UART_PutChar( *ptr ) ;
}
return iIndex ;
}
extern void _exit( int status )
{
printf( "Exiting with status %d.\n", status ) ;
for ( ; ; ) ;
}
extern void _kill( int pid, int sig )
{
return ;
}
extern int _getpid ( void )
{
return -1 ;
}
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