From e83a371e50638abfe513ef971e16c270f00f012b Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Sat, 19 Sep 2020 00:27:30 -0700
Subject: [PATCH] GBA BIOS: Division by zero sometimes doesn't crash

---
 src/gba/bios.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gba/bios.c b/src/gba/bios.c
index f9664e59c..e71be63e2 100644
--- a/src/gba/bios.c
+++ b/src/gba/bios.c
@@ -277,7 +277,11 @@ static void _MidiKey2Freq(struct GBA* gba) {
 static void _Div(struct GBA* gba, int32_t num, int32_t denom) {
 	struct ARMCore* cpu = gba->cpu;
 	if (denom == 0) {
-		mLOG(GBA_BIOS, FATAL, "Attempting to divide %i by zero!", num);
+		if (num == 0 || num == -1 || num == 1) {
+			mLOG(GBA_BIOS, GAME_ERROR, "Attempting to divide %i by zero!", num);
+		} else {
+			mLOG(GBA_BIOS, FATAL, "Attempting to divide %i by zero!", num);
+		}
 		// If abs(num) > 1, this should hang, but that would be painful to
 		// emulate in HLE, and no game will get into a state under normal
 		// operation where it hangs...