call = 57. / C library -- vcall / vcall(file, argv); / / where argv is a vector argv[0] ... argv[x], 0 / last vector element must be 0 / .globl _vcall, cerror rtt = 6 _vcall: mov r5,-(sp) mov sp,r5 mov 4(r5),0f mov 6(r5),0f+2 sys 0; 9f br 1f 1: bec 2f jmp cerror 2: mov(sp)+,r5 rts pc .data 9: sys call; 0:..; ..