154 lines
3.1 KiB
C
154 lines
3.1 KiB
C
/*
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* Copyright (C) OpenTX
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*
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* Based on code named
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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