163 lines
3.9 KiB
C
163 lines
3.9 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2009, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/**
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* \file syscalls.c
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*
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* Implementation of newlib syscall.
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*
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*/
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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// #include "board.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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/*----------------------------------------------------------------------------
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* Exported variables
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*----------------------------------------------------------------------------*/
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#undef errno
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extern int errno;
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extern int _end;
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extern int _heap_end;
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/*----------------------------------------------------------------------------
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* Exported functions
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*----------------------------------------------------------------------------*/
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extern void _exit( int status ) ;
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extern void _kill( int pid, int sig ) ;
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extern int _getpid ( void ) ;
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unsigned char *heap = (unsigned char *)&_end;
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extern caddr_t _sbrk(int nbytes)
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{
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if (heap + nbytes < (unsigned char *)&_heap_end) {
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unsigned char *prev_heap = heap;
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heap += nbytes;
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return (caddr_t) prev_heap;
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}
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else {
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errno = ENOMEM;
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return ((void*)-1);
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}
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}
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extern int _gettimeofday(void *p1, void *p2)
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{
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return 0 ;
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}
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extern int _link( char *old, char *nw )
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{
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return -1 ;
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}
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extern int _unlink (const char *path)
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{
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return -1 ;
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}
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extern int _open(const char *name, int flags, int mode)
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{
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return -1 ;
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}
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extern int _close( int file )
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{
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return -1 ;
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}
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extern int _fstat( int file, struct stat *st )
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{
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st->st_mode = S_IFCHR ;
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return 0 ;
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}
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extern int _isatty( int file )
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{
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return 1 ;
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}
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extern int _lseek( int file, int ptr, int dir )
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{
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return 0 ;
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}
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extern int _read(int file, char *ptr, int len)
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{
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return 0 ;
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}
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extern int _write( int file, char *ptr, int len )
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{
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int iIndex ;
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// for ( ; *ptr != 0 ; ptr++ )
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for ( iIndex=0 ; iIndex < len ; iIndex++, ptr++ )
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{
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// TODO UART_PutChar( *ptr ) ;
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}
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return iIndex ;
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}
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extern void _exit( int status )
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{
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#if defined(SIMU)
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printf( "Exiting with status %d.\n", status ) ;
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#endif
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for ( ; ; ) ;
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}
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extern void _kill( int pid, int sig )
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{
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return ;
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}
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extern int _getpid ( void )
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{
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return -1 ;
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}
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void _init (void)
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{
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}
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