147 lines
2.3 KiB
C
147 lines
2.3 KiB
C
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/**
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* reimplement arm c library's basic functions
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*/
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#include <string.h>
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#include <rt_sys.h>
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#include "rtthread.h"
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#pragma import(__use_no_semihosting_swi)
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int remove(const char *filename)
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{
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RT_ASSERT(0);
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for(;;);
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}
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/* rename() */
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int system(const char *string)
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{
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RT_ASSERT(0);
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for(;;);
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}
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/* Standard IO device handles. */
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#define STDIN 1
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#define STDOUT 2
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#define STDERR 3
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/* Standard IO device name defines. */
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const char __stdin_name[] = "STDIN";
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const char __stdout_name[] = "STDOUT";
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const char __stderr_name[] = "STDERR";
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FILEHANDLE _sys_open(const char *name, int openmode)
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{
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/* Register standard Input Output devices. */
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if (strcmp(name, __stdin_name) == 0)
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return (STDIN);
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if (strcmp(name, __stdout_name) == 0)
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return (STDOUT);
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if (strcmp(name, __stderr_name) == 0)
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return (STDERR);
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#ifndef RT_USING_DFS
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return 0;
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#else
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/* TODO: adjust open file mode */
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return open(name, openmode, 0);
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#endif
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}
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int _sys_close(FILEHANDLE fh)
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{
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#ifndef RT_USING_DFS
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return 0;
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#else
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if (fh < 3)
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return 0;
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return close(fh);
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#endif
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}
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int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
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{
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if (fh == STDIN)
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{
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/* TODO */
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return 0;
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}
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#ifndef RT_USING_DFS
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return 0;
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#else
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return read(fh, buf, len);
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#endif
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}
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int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
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{
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if ((fh == STDOUT) || (fh == STDERR))
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{
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#ifndef RT_USING_CONSOLE
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return 0;
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#else
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rt_device_t console_device;
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extern rt_device_t rt_console_get_device(void);
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console_device = rt_console_get_device();
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if (console_device != 0) rt_device_write(console_device, 0, buf, len);
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return len;
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#endif
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}
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#ifndef RT_USING_DFS
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return 0;
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#else
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return write(fh, buf, len);
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#endif
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}
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int _sys_seek(FILEHANDLE fh, long pos)
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{
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#ifndef RT_USING_DFS
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return 0;
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#else
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/* TODO: adjust last parameter */
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return lseek(fh, pos, 0);
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#endif
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}
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int _sys_tmpnam(char *name, int fileno, unsigned maxlength)
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{
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return 0;
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}
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char *_sys_command_string(char *cmd, int len)
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{
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return cmd;
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}
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void _ttywrch(int ch)
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{
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}
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void _sys_exit(int return_code)
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{
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while (1);
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}
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long _sys_flen(FILEHANDLE fh)
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{
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return 0;
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}
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int _sys_istty(FILEHANDLE fh)
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{
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return 0;
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}
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