From c9f1401ef3ab5e5c78b27016a8332691d05ca2af Mon Sep 17 00:00:00 2001
From: Gwilym Kuiper <gw@ilym.me>
Date: Sun, 19 Jun 2022 13:03:44 +0100
Subject: [PATCH] Fix issue with small, misaligned copies

---
 agb/src/agbabi/memcpy.s | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/agb/src/agbabi/memcpy.s b/agb/src/agbabi/memcpy.s
index 0c7412b5..8f6b6018 100644
--- a/agb/src/agbabi/memcpy.s
+++ b/agb/src/agbabi/memcpy.s
@@ -29,6 +29,10 @@ __aeabi_memcpy:
     bmi     .Lcopy1
     bcs     .Lcopy2
 
+    // If the number of bytes to copy is less than 4, we should just copy one byte at a time
+    cmp     r2, #4
+    bmi     .Lcopy1
+
 .Lcopy4:
     // Copy half and byte head
     rsb     r3, r0, #4