system.c File Reference

newlib Interface Hooks More...

#include <_ansi.h>
#include <_syslist.h>
#include <limits.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/times.h>
#include <stdint.h>
#include <malloc.h>
#include "system.h"

Data Structures
struct	fs_mapping_t
	Filesystem mapping structure. More...
struct	fs_handle_t
	Filesystem open handle structure. More...
Defines
#define	STACK_SIZE   0x10000
	Stack size.
#define	DEBUG_OUT(x)   ((uint32_t *)0xA4400044)[0] = ((uint32_t)(x))
	Write to the MESS debug register.
STDIN/STDOUT/STDERR definitions from unistd.h
We can't just include unistd.h as it redefines several of the functions here that we are attempting to replace.
#define	STDIN_FILENO   0
	Standard input file descriptor.
#define	STDOUT_FILENO   1
	Standard output file descriptor.
#define	STDERR_FILENO   2
	Standard error file descriptor.
Functions
void	enable_interrupts ()
	Enable interrupts systemwide.
void	disable_interrupts ()
	Disable interrupts systemwide.
int	close (int fildes)
	Close a file.
int	attach_filesystem (const char *const prefix, filesystem_t *filesystem)
	Register a filesystem with newlib.
int	detach_filesystem (const char *const prefix)
	Unregister a filesystem from newlib.
int	chown (const char *path, uid_t owner, gid_t group)
	Change ownership on a file or directory.
int	execve (char *name, char **argv, char **env)
	Load and execute an executable given a path.
void	exit (int rc)
	End execution on current thread.
int	fork (void)
	Fork execution into two threads.
int	fstat (int fildes, struct stat *st)
	Return stats on an open file handle.
int	getpid (void)
	Return the PID of the current thread.
int	gettimeofday (struct timeval *ptimeval, void *ptimezone)
	Return the current time.
int	isatty (int file)
	Return whether a file is a TTY or a regular file.
int	kill (int pid, int sig)
	Send a signal to a PID.
int	link (char *existing, char *new)
	Link a new file to an existing file.
int	lseek (int file, int ptr, int dir)
	Seek to a location in a file.
int	open (char *file, int flags, int mode)
	Open a file given a path.
int	read (int file, char *ptr, int len)
	Read data from a file.
int	readlink (const char *path, char *buf, size_t bufsize)
	Read a link.
void *	sbrk (int incr)
	Return a new chunk of memory to be used as heap.
int	stat (const char *file, struct stat *st)
	Return file stats based on a file name.
int	symlink (const char *path1, const char *path2)
	Create a symbolic link to a file.
clock_t	times (struct tms *buf)
	Return time information on the current process.
int	unlink (char *name)
	Remove a file based on filename.
int	wait (int *status)
	Wait for a child process.
int	write (int file, char *ptr, int len)
	Write data to a file.
int	dir_findfirst (const char *const path, dir_t *dir)
	Find the first file in a directory.
int	dir_findnext (const char *const path, dir_t *dir)
	Find the next file in a directory.
int	hook_stdio_calls (stdio_t *stdio_calls)
	Hook into stdio for STDIN, STDOUT and STDERR callbacks.
int	unhook_stdio_calls ()
	Unhook from stdio.
Variables
char *	__env [1] = { 0 }
	Environment variables.
char **	environ = __env
	Environment variables.
int	errno
	Master definition of errno.
int	__bootcic
	Boot CIC.

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Detailed Description

newlib Interface Hooks