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monitor: Return early if invoked while already in the monitor

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Ry 2022-07-26 17:48:29 -07:00
parent 8ee0214164
commit 1133e97e02
1 changed files with 4 additions and 0 deletions
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4
monitor/monitor.asm
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@ -1,6 +1,10 @@
; debug monitor ; debug monitor
invoke_monitor: invoke_monitor:
; return if we're already in the monitor
cmp [0x000003FC], monitor_vsync_handler
ifz ret
; set the vsync handler to our own and reenable interrupts ; set the vsync handler to our own and reenable interrupts
mov [MONITOR_OLD_VSYNC_HANDLER], [0x000003FC] mov [MONITOR_OLD_VSYNC_HANDLER], [0x000003FC]
mov [0x000003FC], monitor_vsync_handler mov [0x000003FC], monitor_vsync_handler