| /** |
| * \file |
| * |
| * \brief Syscalls for SAM0 (GCC). |
| * |
| * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries. |
| * |
| * \asf_license_start |
| * |
| * \page License |
| * |
| * Subject to your compliance with these terms, you may use Microchip |
| * software and any derivatives exclusively with Microchip products. |
| * It is your responsibility to comply with third party license terms applicable |
| * to your use of third party software (including open source software) that |
| * may accompany Microchip software. |
| * |
| * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| * |
| * \asf_license_stop |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #undef errno |
| extern int errno; |
| extern int _end; |
| |
| extern caddr_t _sbrk(int incr); |
| extern int link(char *old, char *_new); |
| extern int _close(int file); |
| extern int _fstat(int file, struct stat *st); |
| extern int _isatty(int file); |
| extern int _lseek(int file, int ptr, int dir); |
| extern void _exit(int status); |
| extern void _kill(int pid, int sig); |
| extern int _getpid(void); |
| |
| /** |
| * \brief Replacement of C library of _sbrk |
| */ |
| extern caddr_t _sbrk(int incr) |
| { |
| static unsigned char *heap = NULL; |
| unsigned char * prev_heap; |
| |
| if (heap == NULL) { |
| heap = (unsigned char *)&_end; |
| } |
| prev_heap = heap; |
| |
| heap += incr; |
| |
| return (caddr_t)prev_heap; |
| } |
| |
| /** |
| * \brief Replacement of C library of link |
| */ |
| extern int link(char *old, char *_new) |
| { |
| (void)old, (void)_new; |
| return -1; |
| } |
| |
| /** |
| * \brief Replacement of C library of _close |
| */ |
| extern int _close(int file) |
| { |
| (void)file; |
| return -1; |
| } |
| |
| /** |
| * \brief Replacement of C library of _fstat |
| */ |
| extern int _fstat(int file, struct stat *st) |
| { |
| (void)file; |
| st->st_mode = S_IFCHR; |
| |
| return 0; |
| } |
| |
| /** |
| * \brief Replacement of C library of _isatty |
| */ |
| extern int _isatty(int file) |
| { |
| (void)file; |
| return 1; |
| } |
| |
| /** |
| * \brief Replacement of C library of _lseek |
| */ |
| extern int _lseek(int file, int ptr, int dir) |
| { |
| (void)file, (void)ptr, (void)dir; |
| return 0; |
| } |
| |
| /** |
| * \brief Replacement of C library of _exit |
| */ |
| extern void _exit(int status) |
| { |
| printf("Exiting with status %d.\n", status); |
| |
| for (;;) |
| ; |
| } |
| |
| /** |
| * \brief Replacement of C library of _kill |
| */ |
| extern void _kill(int pid, int sig) |
| { |
| (void)pid, (void)sig; |
| return; |
| } |
| |
| /** |
| * \brief Replacement of C library of _getpid |
| */ |
| extern int _getpid(void) |
| { |
| return -1; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |