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>

unsigned short gettimdsp(void);

SYSCALL_RTN_TBL_ENTRY msGetTbl[] =

{

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

};

unsigned short gettimdsp(void)

{

return timetck;

}

void usrAppInit (void)

{

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

}