Vxworks增加system call

Vxworks中增加system call的伪代码.

比如用户层可以获取kernel中的time tick.

#include <syscall.h>

#include<syscallLib.h>

unsignedshortgettimdsp(void);

SYSCALL_RTN_TBL_ENTRYmsGetTbl[] =

{

{(FUNCPTR) gettimdsp, 1,"gettimdsp", 0}

};

unsignedshortgettimdsp(void)

{

return timetck;

}

voidusrAppInit (void)

{

syscallGroupRegister(2,"msgetforrtp", 2, (SYSCALL_RTN_TBL_ENTRY*)&msGetTbl, 0);

}