kernel: Ensure new_window doesn't clobber r0

2022-12-24 01:29:00 -08:00 · 2022-12-24 01:29:00 -08:00 · b71d10ab63
commit b71d10ab63
parent a68e584c82
1 changed files with 2 additions and 0 deletions
--- a/kernel/window/window.asm
+++ b/kernel/window/window.asm
@ -28,6 +28,7 @@ const TITLE_BAR_HEIGHT: 16
 ; outputs:
 ; none
 new_window:
+    push r0
    push r1
    push r2
    push r3
@ -140,6 +141,7 @@ new_window:
    pop r3
    pop r2
    pop r1
+    pop r0
    ret

 ; destroy a window and free memory used by it