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