minix/lib/i86/em/em_cmu4.s
2009-11-09 10:26:00 +00:00

27 lines
285 B
ArmAsm

.define .cmu4
.text
.cmu4:
pop bx ! return address
pop cx
pop dx
pop ax
push si
mov si,sp
xchg bx,2(si)
pop si
cmp bx,dx
ja 1f
jb 2f
cmp ax,cx
ja 1f
je 3f
2:
mov ax,#-1
ret
3:
xor ax,ax
ret
1:
mov ax,#1
ret