syscalls.c File Reference

Support files for GNU libc. More...

#include <_ansi.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
#include <errno.h>
#include <reent.h>
#include <unistd.h>
#include <sys/wait.h>
#include <stdint.h>
#include "usart.h"

Go to the source code of this file.

Macros
#define	FreeRTOS
#define	MAX_STACK_SIZE   0x2000

Functions
int	__io_putchar (int ch) __attribute__((weak))
int	__io_getchar (void)
int	_gettimeofday (struct timeval *tp, struct timezone *tzp)
void	initialise_monitor_handles ()
int	_getpid (void)
int	_kill (int pid, int sig)
void	_exit (int status)
int	_write (int file, char *ptr, int len)
int	_close (int file)
int	_fstat (int file, struct stat *st)
int	_isatty (int file)
int	_lseek (int file, int ptr, int dir)
int	_read (int file, char *ptr, int len)
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)

Detailed Description

Support files for GNU libc.

Author

stolen from Sheaff.

Date

Jan 2016

Some standard syscall functions are redefined here in order to make printf() calls direct output to the USART (to be accessed by the host when the development board is connected through the USB connector)

note the changes to _write()

Definition in file syscalls.c.

Macro Definition Documentation

#define FreeRTOS

Definition at line 35 of file syscalls.c.

#define MAX_STACK_SIZE   0x2000

Definition at line 36 of file syscalls.c.

Function Documentation

int __io_getchar

(

void

)

Definition at line 39 of file syscalls.c.

int __io_putchar

(

int

ch

)

int _close

(

int

file

)

Definition at line 123 of file syscalls.c.

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

Definition at line 197 of file syscalls.c.

void _exit

(

int

status

)

Definition at line 110 of file syscalls.c.

int _fork

(

void

)

Definition at line 191 of file syscalls.c.

int _fstat	(	int	file,
		struct stat *	st
	)

Definition at line 128 of file syscalls.c.

int _getpid

(

void

)

Definition at line 99 of file syscalls.c.

int _gettimeofday	(	struct timeval *	tp,
		struct timezone *	tzp
	)

Definition at line 84 of file syscalls.c.

int _isatty

(

int

file

)

Definition at line 134 of file syscalls.c.

int _kill	(	int	pid,
		int	sig
	)

Definition at line 104 of file syscalls.c.

int _link	(	char *	old,
		char *	new
	)

Definition at line 185 of file syscalls.c.

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

Definition at line 139 of file syscalls.c.

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

Definition at line 156 of file syscalls.c.

int _read	(	int	file,
		char *	ptr,
		int	len
	)

Definition at line 144 of file syscalls.c.

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

Definition at line 179 of file syscalls.c.

int _times

(

struct tms *

buf

)

Definition at line 174 of file syscalls.c.

int _unlink

(

char *

name

)

Definition at line 168 of file syscalls.c.

int _wait

(

int *

status

)

Definition at line 162 of file syscalls.c.

int _write	(	int	file,
		char *	ptr,
		int	len
	)

Definition at line 116 of file syscalls.c.

void initialise_monitor_handles

(

)

Definition at line 95 of file syscalls.c.