loadable_syscall
sysp->sy_callc = loadable_syscall;
if ((callp->sy_callc == loadable_syscall) ^
(sysent[callnum].sy_callc == loadable_syscall)) {
int64_t loadable_syscall();
{ 0, SE_LOADABLE, nosys32, NULL, loadable_syscall }
extern int64_t loadable_syscall(long, long, long, long, long, long, long, long);