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Handle case where there is no active window

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This commit is contained in:
mebibytedraco 2023-07-24 23:36:33 -04:00
parent 7b45cbc435
commit d46b21a965
1 changed files with 6 additions and 0 deletions
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6
kernel/window/window.asm
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@ -150,6 +150,11 @@ new_window:
call get_window_overlay_number ; get the overlay number of the new window call get_window_overlay_number ; get the overlay number of the new window
mov r10, r0 mov r10, r0
mov.8 r0, [active_window_offset] ; get the active window's overlay number mov.8 r0, [active_window_offset] ; get the active window's overlay number
cmp r0, 0xFF ; is there no active window?
ifnz jmp new_window_active_window
pop r0
jmp new_window_skip_swap
new_window_active_window:
mul r0, 4 mul r0, 4
add r0, window_list add r0, window_list
mov r1, [r0] mov r1, [r0]
@ -159,6 +164,7 @@ new_window:
pop r0 pop r0
cmp r11, r10 ; if the active window is on a higher overlay, swap cmp r11, r10 ; if the active window is on a higher overlay, swap
ifnc call swap_windows ifnc call swap_windows
new_window_skip_swap:
; finally, add this window to the window list ; finally, add this window to the window list
push r0 push r0