61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
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/*
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* This 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 software 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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* You should have received a copy of the GNU General Public License
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* along with this software. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Daniele Lacamera
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*
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*
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*/
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#include <stdlib.h>
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#include <stdint.h>
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extern unsigned int _start_heap;
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void * _sbrk_r(unsigned int incr)
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{
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static unsigned char *heap = NULL;
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void *old_heap = heap;
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if (((incr >> 2) << 2) != incr)
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incr = ((incr >> 2) + 1) << 2;
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if (old_heap == NULL)
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old_heap = heap = (unsigned char *)&_start_heap;
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heap += incr;
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return old_heap;
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}
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int _close(int fd)
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{
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return -1;
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}
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int _fstat(int fd)
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{
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return -1;
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}
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int _lseek(int fd, int whence, int off)
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{
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return -1;
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}
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int _read(uint8_t *buf, int len)
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{
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return -1;
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}
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int _isatty(int fd)
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{
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return 1;
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}
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