syscalls.c File Reference

STM32CubeIDE Minimal System calls file. More...

#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>

Include dependency graph for syscalls.c:

Go to the source code of this file.

Functions
int	__io_putchar (int ch) __attribute__((weak))
int	__io_getchar (void)
void	initialise_monitor_handles ()
int	_getpid (void)
int	_kill (int pid, int sig)
void	_exit (int status)
	__attribute__ ((weak))
int	_close (int file)
int	_fstat (int file, struct stat *st)
int	_isatty (int file)
int	_lseek (int file, int ptr, int dir)
int	_open (char *path, int flags,...)
int	_wait (int *status)
int	_unlink (char *name)
int	_times (struct tms *buf)
int	_stat (char *file, struct stat *st)
int	_link (char *old, char *new)
int	_fork (void)
int	_execve (char *name, char **argv, char **env)
void *	_sbrk (ptrdiff_t incr)

Variables
char **	environ = __env

Detailed Description

STM32CubeIDE Minimal System calls file.

Author

Auto-generated by STM32CubeIDE

       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.

Definition in file syscalls.c.

Function Documentation

__io_getchar()

int __io_getchar ( void )

extern

Definition at line 36 of file syscalls.c.

                 { 0 };

initialise_monitor_handles()

void initialise_monitor_handles

(

)

Definition at line 44 of file syscalls.c.

{
}

_getpid()

int _getpid

(

void

)

Definition at line 48 of file syscalls.c.

{
  return 1;
}

_kill()

int _kill	(	int	pid,
		int	sig )

Definition at line 53 of file syscalls.c.

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

_exit()

void _exit

(

int

status

)

Definition at line 61 of file syscalls.c.

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

__attribute__()

__attribute__

(

(weak)

)

Definition at line 67 of file syscalls.c.

{
  (void)file;
  int DataIdx;
 
  for (DataIdx = 0; DataIdx < len; DataIdx++)
  {
    *ptr++ = __io_getchar();
  }
 
  return len;
}

_close()

int _close

(

int

file

)

Definition at line 92 of file syscalls.c.

{
  (void)file;
  return -1;
}

_fstat()

int _fstat	(	int	file,
		struct stat *	st )

Definition at line 99 of file syscalls.c.

{
  (void)file;
  st->st_mode = S_IFCHR;
  return 0;
}

_isatty()

int _isatty

(

int

file

)

Definition at line 106 of file syscalls.c.

{
  (void)file;
  return 1;
}

_lseek()

int _lseek	(	int	file,
		int	ptr,
		int	dir )

Definition at line 112 of file syscalls.c.

{
  (void)file;
  (void)ptr;
  (void)dir;
  return 0;
}

_open()

int _open	(	char *	path,
		int	flags,
			... )

Definition at line 120 of file syscalls.c.

{
  (void)path;
  (void)flags;
  /* Pretend like we always fail */
  return -1;
}

_wait()

int _wait

(

int *

status

)

Definition at line 128 of file syscalls.c.

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

_unlink()

int _unlink

(

char *

name

)

Definition at line 135 of file syscalls.c.

{
  (void)name;
  errno = ENOENT;
  return -1;
}

_times()

int _times

(

struct tms *

buf

)

Definition at line 142 of file syscalls.c.

{
  (void)buf;
  return -1;
}

_stat()

int _stat	(	char *	file,
		struct stat *	st )

Definition at line 148 of file syscalls.c.

{
  (void)file;
  st->st_mode = S_IFCHR;
  return 0;
}

_link()

int _link	(	char *	old,
		char *	new )

Definition at line 155 of file syscalls.c.

{
  (void)old;
  (void)new;
  errno = EMLINK;
  return -1;
}

_fork()

int _fork

(

void

)

Definition at line 163 of file syscalls.c.

{
  errno = EAGAIN;
  return -1;
}

_execve()

int _execve	(	char *	name,
		char **	argv,
		char **	env )

Definition at line 169 of file syscalls.c.

{
  (void)name;
  (void)argv;
  (void)env;
  errno = ENOMEM;
  return -1;
}

_sbrk()

void * _sbrk

(

ptrdiff_t

incr

)

Definition at line 178 of file syscalls.c.

{
    (void)incr;
    return (void *)-1;
}

Variable Documentation

environ

char** environ = __env

Definition at line 40 of file syscalls.c.