#include "sys.h" .define __sbrk .define __brk .extern _end .extern _errno __sbrk: mov 2(sp),0f+2 beq 1f add Ixxx,0f+2 bcs 2f sys indir; .data2 0f bcc 1f 2: mov r0,_errno mov $-1,r0 rts pc 1: mov Ixxx,r0 add 2(sp),Ixxx rts pc __brk: mov 2(sp),0f+2 sys indir; .data2 0f bcc 1f mov r0,_errno mov $-1,r0 rts pc 1: mov 2(sp),Ixxx clr r0 rts pc .sect .data 0: sys break .data2 0 Ixxx: .data2 _end