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skel.c
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skel.c
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/*****************************************************************************
* *
* DFU/SD/SDHC Bootloader for LPC17xx *
* *
* by Triffid Hunter *
* *
* *
* This firmware is Copyright (C) 2009-2010 Michael Moon aka Triffid_Hunter *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
* *
*****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#define WEAK __attribute__ ((weak))
#include "LPC17xx.h"
void WEAK _exit(int i) {
while (1);
}
int WEAK _kill(int pid, int signal) {
return 0;
}
int WEAK _getpid() {
return 0;
}
int WEAK __aeabi_atexit(void *object, void (*destructor)(void *), void *dso_handle) {
return 0;
}
int WEAK _write(int fd, uint8_t *buf, size_t buflen) {
// _dbg_init();
// dbg->send((uint8_t *) buf, buflen);
return buflen;
}
int WEAK _close(int fd) {
return 0;
}
int WEAK _lseek(int file, int ptr, int dir) {
return ptr;
}
int WEAK _read(int file, char *buf, int len) {
// _dbg_init();
// return dbg->recv((uint8_t *) buf, len);
return 0;
}
void* WEAK _sbrk(int incr) {
extern char _ebss; // Defined by the linker
static char *heap_end;
char *prev_heap_end;
if (heap_end == 0) {
heap_end = &_ebss;
}
prev_heap_end = heap_end;
char * stack = (char*) __get_MSP();
if (heap_end + incr > stack)
{
//_write (STDERR_FILENO, "Heap and stack collision\n", 25);
//errno = ENOMEM;
return (void *) -1;
//abort ();
}
heap_end += incr;
return prev_heap_end;
}
int WEAK _fstat(int file, void *st) {
return 0;
}
int WEAK _isatty(int fd) {
if (fd <= 2)
return 1;
return 0;
}
void __aeabi_unwind_cpp_pr0(void){}
void __libc_init_array(void){}
int atexit(void(*f)(void)){ return 0; }