#include "sys.h" .globl _phys .globl _errno _phys: mov 2(sp),0f+2 mov 4(sp),0f+4 mov 6(sp),0f+6 sys indir; 0f bec 1f mov r0,_errno mov $-1,r0 1: rts pc .data 0: sys phys; ..; ..; ..