/* ---------------------------------------------------------------------------- | |
* 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 ; | |
} |