基于ARM处理器的Semihosting实现

基于ARM处理器的Semihosting实现
Information Quarterly
[25] Number 1, Spring 2005
 ID Semihosting Operation Type System Calls
0x01 SYS_OPEN int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
0x02 SYS_CLOSE int _sys_close(FILEHANDLE fh)
0x03 SYS_WRITEC
0x04 SYS_WRITE0
0x05 SYS_WRITE int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
0x06 SYS_READ int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
0x07 SYS_READC
0x08 SYS_ISERROR
0x09 SYS_ISTTY int _sys_istty(FILE *f)
0x0A SYS_SEEK