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Core/Src/syscalls.c

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+/**
+ ******************************************************************************
+ * @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;
+}