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97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2024 OpenMV, LLC.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Stub functions for use when linking with nosys.
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*/
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#if OMV_NOSYS_STUBS_ENABLE
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#include <stdint.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include CMSIS_MCU_H
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void _exit(int fd) {
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while (1) {
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__WFI();
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}
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}
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int _write(int handle, char *buffer, int size) {
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errno = ENOSYS;
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return -1;
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}
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int _read(int handle, char *buffer, int size) {
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errno = ENOSYS;
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return -1;
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}
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int _close(int f) {
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errno = ENOSYS;
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return -1;
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}
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int _lseek(int f, int ptr, int dir) {
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errno = ENOSYS;
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return -1;
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}
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int _fstat(int fs, struct stat *st) {
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errno = ENOSYS;
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return -1;
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}
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int _isatty(int f) {
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errno = ENOSYS;
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return 0;
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}
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int _stat(const char *f, struct stat *st) {
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errno = ENOSYS;
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return -1;
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}
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void *_sbrk(ptrdiff_t increment) {
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extern char __end__;
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static char *heap_end;
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extern char _heap_limit;
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static char *heap_limit = &_heap_limit;
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if (heap_end == 0) {
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heap_end = &__end__;
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}
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char *prev_heap_end = heap_end;
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// Check if the new break is within the limits
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if (heap_end + increment > heap_limit) {
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// Out of memory
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errno = ENOMEM;
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return (void *) -1;
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}
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heap_end += increment;
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return (void *) prev_heap_end;
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}
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#endif // OMV_NOSYS_STUBS_ENABLE
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