#include "sys.h" .globl _execle .globl _errno _execle: mov 2(sp),0f+2 mov sp,r0 add $4,r0 mov r0,0f+4 1: tst (r0)+ bne 1b mov (r0),0f+6 sys indir; 0f mov r0,_errno mov $-1,r0 rts pc .data 0: sys exece; ..; ..; ..