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[libc] add libc_console_init for console initialization.

This commit is contained in:
Bernard Xiong 2018-02-25 15:11:04 +08:00
parent ac811fe9c4
commit 14faf8a77a
2 changed files with 26 additions and 14 deletions
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9
components/libc/newlib/libc.c
View File

@ -21,7 +21,6 @@
int libc_system_init(void)
{
#ifdef RT_USING_DFS
int fd;
struct rt_device *console_dev;
#ifndef RT_USING_DFS_DEVFS
@ -33,14 +32,6 @@ int libc_system_init(void)
{
/* initialize console device */
rt_console_init(console_dev->parent.name);
/* open console as stdin/stdout/stderr */
fd = open("/dev/console", O_RDONLY, 0); /* for stdin */
fd = open("/dev/console", O_WRONLY, 0); /* for stdout */
fd = open("/dev/console", O_WRONLY, 0); /* for stderr */
/* skip warning */
fd = fd;
}
#endif

31
components/libc/newlib/syscalls.c
View File

@ -3,6 +3,8 @@
#include <sys/time.h>
#include <rtthread.h>
#include <stdio.h>
#ifdef RT_USING_DFS
#include <dfs_posix.h>
#endif
@ -12,6 +14,8 @@
#endif
/* Reentrant versions of system calls. */
static int __console_fd = -1;
int dump = 0;
int
_close_r(struct _reent *ptr, int fd)
@ -205,18 +209,14 @@ _wait_r(struct _reent *ptr, int *status)
_ssize_t
_write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
{
if (fd < 3)
if (fd == __console_fd)
{
#ifdef RT_USING_CONSOLE
rt_device_t console_device;
extern rt_device_t rt_console_get_device(void);
console_device = rt_console_get_device();
if (console_device != 0) rt_device_write(console_device, 0, buf, nbytes);
return nbytes;
#else
return 0;
#endif
}
else
{
@ -462,3 +462,24 @@ void abort(void)
while (1);
}
int libc_console_init(void)
{
/* open console as stdin/stdout/stderr */
__console_fd = open("/dev/console", O_RDWR, 0); /* for stdin/stdout/stderr */
if (__console_fd >= 0)
{
_GLOBAL_REENT->_stdin = fdopen(__console_fd, "r");
_GLOBAL_REENT->_stdout = fdopen(__console_fd, "w");
setvbuf(_GLOBAL_REENT->_stdout, NULL, _IONBF, 0);
_GLOBAL_REENT->_stderr = fdopen(__console_fd, "w");
setvbuf(_GLOBAL_REENT->_stderr, NULL, _IONBF, 0);
_GLOBAL_REENT->__sdidinit = 1;
}
return 0;
}
INIT_APP_EXPORT(libc_console_init);