improve asmdiff.sh

asmdiff.sh

@@ -1,7 +1,11 @@
 #!/bin/bash
 
 OBJDUMP="$DEVKITARM/bin/arm-none-eabi-objdump -D -bbinary -marmv4t -Mforce-thumb"
-OPTIONS="--start-address=$(($1)) --stop-address=$(($1 + $2))"
+if [ $(($1)) -ge $((0x8000000)) ]; then
+    OPTIONS="--adjust-vma=0x8000000 --start-address=$(($1)) --stop-address=$(($1 + $2))"
+else
+    OPTIONS="--start-address=$(($1)) --stop-address=$(($1 + $2))"
+fi
 $OBJDUMP $OPTIONS baserom.gba > baserom.dump
 $OBJDUMP $OPTIONS pokeemerald.gba > pokeemerald.dump
 diff -u baserom.dump pokeemerald.dump