From 118b6e9a8572a9d10cbad9a547ce1df10365bab1 Mon Sep 17 00:00:00 2001
From: Corwin Kuiper <corwin@kuiper.dev>
Date: Sat, 29 May 2021 12:18:34 +0100
Subject: [PATCH] load zeros to correspond to argc and argv

---
 agb/crt0.s | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/agb/crt0.s b/agb/crt0.s
index 8e043a69..f904d2cd 100644
--- a/agb/crt0.s
+++ b/agb/crt0.s
@@ -30,9 +30,15 @@ __start:
     ldr r2, =__ewram_rom_length_halfwords
     swi 0x000B0000
 
+
+    @ put zero in both r0 and r1
+    @ This corresponds to zero for argc and argv (which would technically be required for a c runtime)
+    ldr r0, =0
+    mov r1, r0
+
     @ load main and branch
-    ldr r0, =main
-    bx  r0
+    ldr r2, =main
+    bx  r2
 .pool
 
 .include "interrupt_simple.s"