syscalls.c

/**
 ******************************************************************************
 * @file      syscalls.c
 * @author    Auto-generated by STM32CubeMX
 * @brief     Minimal System calls file
 *
 *            For more information about which c-functions
 *            need which of these lowlevel functions
 *            please consult the Newlib libc-manual
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2020-2024 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */

/* Includes */
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>


/* Variables */
extern int __io_putchar(int ch) __attribute__((weak));
extern int __io_getchar(void) __attribute__((weak));


char* __env[1] = { 0 };
char** environ = __env;


/* Functions */
void
initialise_monitor_handles() {
}

int
_getpid(void) {
    return 1;
}

int
_kill(int pid, int sig) {
    (void)pid;
    (void)sig;
    errno = EINVAL;
    return -1;
}

void
_exit (int status) {
    _kill(status, -1);
    while (1) {}    /* Make sure we hang here */
}

__attribute__((weak)) int _read(int file, char* ptr, int len) {
    (void)file;
    int DataIdx;

    for (DataIdx = 0; DataIdx < len; DataIdx++) {
        *ptr++ = __io_getchar();
    }

    return len;
}

__attribute__((weak)) int _write(int file, char* ptr, int len) {
    (void)file;
    int DataIdx;

    for (DataIdx = 0; DataIdx < len; DataIdx++) {
        __io_putchar(*ptr++);
    }
    return len;
}

int
_close(int file) {
    (void)file;
    return -1;
}


int
_fstat(int file, struct stat* st) {
    (void)file;
    st->st_mode = S_IFCHR;
    return 0;
}

int
_isatty(int file) {
    (void)file;
    return 1;
}

int
_lseek(int file, int ptr, int dir) {
    (void)file;
    (void)ptr;
    (void)dir;
    return 0;
}

int
_open(char* path, int flags, ...) {
    (void)path;
    (void)flags;
    /* Pretend like we always fail */
    return -1;
}

int
_wait(int* status) {
    (void)status;
    errno = ECHILD;
    return -1;
}

int
_unlink(char* name) {
    (void)name;
    errno = ENOENT;
    return -1;
}

int
_times(struct tms* buf) {
    (void)buf;
    return -1;
}

int
_stat(char* file, struct stat* st) {
    (void)file;
    st->st_mode = S_IFCHR;
    return 0;
}

int
_link(char* old, char* new) {
    (void)old;
    (void)new;
    errno = EMLINK;
    return -1;
}

int
_fork(void) {
    errno = EAGAIN;
    return -1;
}

int
_execve(char* name, char** argv, char** env) {
    (void)name;
    (void)argv;
    (void)env;
    errno = ENOMEM;
    return -1;
}