ReC98/th05/formats/pi_slot_free.asm

22 lines
352 B
NASM

func pi_slot_free
@@slot = word ptr 4
mov bx, sp
mov bx, ss:[bx+@@slot]
mov ax, bx
shl bx, 2
add bx, offset _pi_slot_buffers
cmp dword ptr [bx], 0
jz short @@ret
imul ax, size PiHeader
add ax, offset _pi_slot_headers
push ds
push ax
push word ptr [bx+2]
push word ptr [bx]
mov dword ptr [bx], 0
call graph_pi_free
@@ret:
ret 2
endfunc