Imagelibrary/rt-thread
1
0
Fork 0
mirror of https://github.com/RT-Thread/rt-thread.git synced 2025-12-26 09:08:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

完善IAR KEIL的read write桩函数

Browse Source
This commit is contained in:
Meco Man
2021-11-12 16:47:32 -05:00
parent cb8d5c5d9d
commit 3a3b7ee632
7 changed files with 64 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
components/libc/compilers/armlibc/syscalls.c
View File

@@ -25,7 +25,7 @@
#include "libc.h"
#endif
#define DBG_TAG "armlibc.syscalls"
#define DBG_TAG "Keil.armlibc.syscalls"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
@@ -144,38 +144,48 @@ int _sys_close(FILEHANDLE fh)
*/
int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
{
#ifdef RT_USING_POSIX_STDIO
#ifdef RT_USING_POSIX
int size;
if (fh == STDIN)
{
#ifdef RT_USING_POSIX_STDIO
if (libc_stdio_get_console() < 0)
{
LOG_W("Do not invoke standard output before initializing libc");
return 0;
return 0; /* error, but keep going */
}
size = read(STDIN_FILENO, buf, len);
return len - size;
return 0; /* success */
#else
return 0; /* error */
#endif
}
else if ((fh == STDOUT) || (fh == STDERR))
else if (fh == STDOUT || fh == STDERR)
{
return 0; /* error */
}
size = read(fh, buf, len);
if (size >= 0)
return len - size;
else
return 0; /* error */
{
size = read(fh, buf, len);
if (size >= 0)
return len - size; /* success */
else
return 0; /* error */
}
#else
return 0; /* error */
#endif /* RT_USING_POSIX_STDIO */
#endif /* RT_USING_POSIX */
}
/*
* Write to a file. Returns 0 on success, negative on error, and
* the number of characters _not_ written on partial success.
* `mode' exists for historical reasons and must be ignored.
* The return value is either:
* A positive number representing the number of characters not written
* (so any nonzero return value denotes a failure of some sort).
* A negative number indicating an error.
*/
int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
{
@@ -183,39 +193,36 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
int size;
#endif /* RT_USING_POSIX */
if ((fh == STDOUT) || (fh == STDERR))
if (fh == STDOUT || fh == STDERR)
{
#ifdef RT_USING_POSIX_STDIO
if (libc_stdio_get_console() < 0)
#ifdef RT_USING_CONSOLE
rt_device_t console;
console = rt_console_get_device();
if (console)
{
LOG_W("Do not invoke standard input before initializing libc");
return 0;
rt_device_write(console, -1, buf, len);
}
size = write(STDOUT_FILENO, buf, len);
return len - size;
#elif defined(RT_USING_CONSOLE)
if (rt_console_get_device())
{
rt_device_write(rt_console_get_device(), -1, buf, len);
}
return 0; /* success */
#else
return 0; /* error */
#endif /* RT_USING_POSIX_STDIO */
#endif /* RT_USING_CONSOLE */
}
else if (fh == STDIN)
{
return 0; /* error */
}
#ifdef RT_USING_POSIX
size = write(fh, buf, len);
if (size >= 0)
return len - size;
else
return 0; /* error */
{
#ifdef RT_USING_POSIX
size = write(fh, buf, len);
if (size >= 0)
return 0; /* success */
else
return 0; /* error */
#else
return 0;
return 0; /* error */
#endif /* RT_USING_POSIX */
}
}
/*