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add stdin, stdout, stderr implementation in newlib.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1029 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-10-22 10:20:38 +00:00
parent 363ad228a4
commit a6f06d24cf
3 changed files with 43 additions and 0 deletions
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20
components/libc/newlib/libc.c Normal file
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@ -0,0 +1,20 @@
#include <rtthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
void libc_system_init(const char* tty_name)
{
int fd;
/* init console device */
rt_console_init(tty_name);
/* open console as stdin/stdout/stderr */
fd = open("/dev/console", O_RDONLY, 0); /* for stdin */
rt_kprintf("stdin: %d\n", fd);
fd = open("/dev/console", O_WRONLY, 0); /* for stdout */
rt_kprintf("stdout: %d\n", fd);
fd = open("/dev/console", O_WRONLY, 0); /* for stderr */
rt_kprintf("stderr: %d\n", fd);
}

6
components/libc/newlib/libc.h Normal file
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@ -0,0 +1,6 @@
#ifndef __RTT_LIBC_H__
#define __RTT_LIBC_H__
void libc_system_init(const char* tty_name);
#endif

17
components/libc/newlib/syscalls.c
View File

@ -51,6 +51,8 @@ _getpid_r(struct _reent *ptr)
int int
_isatty_r(struct _reent *ptr, int fd) _isatty_r(struct _reent *ptr, int fd)
{ {
if (fd >=0 && fd < 3) return 1;
/* return "not supported" */ /* return "not supported" */
ptr->_errno = ENOTSUP; ptr->_errno = ENOTSUP;
return -1; return -1;
@ -198,3 +200,18 @@ _free_r (struct _reent *ptr, void *addr)
{ {
rt_free (addr); rt_free (addr);
} }
#ifdef RT_USING_FINSH
#include <finsh.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
void nltest()
{
printf("stdout test!!\n");
fprintf(stdout, "fprintf test!!\n");
fprintf(stderr, "fprintf test!!\n");
}
FINSH_FUNCTION_EXPORT(nltest, newlib test);
#endif