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);

}