From f4ef62bb4134498a4b4a9c4d61b99bda24c98680 Mon Sep 17 00:00:00 2001
From: nullableVoidPtr <30564701+nullableVoidPtr@users.noreply.github.com>
Date: Sun, 18 Nov 2018 16:23:57 +0800
Subject: Renamed primary heap variables and partial cleanup m4a.s

---
 src/save.c | 33 ++++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

(limited to 'src/save.c')

diff --git a/src/save.c b/src/save.c
index 575d4f1..5d39bfe 100644
--- a/src/save.c
+++ b/src/save.c
@@ -2,8 +2,10 @@
 
 extern u32 gUnknown_203B17C;
 extern u32 gUnknown_203B180;
+extern u32 *gUnknown_203B184;
 extern u32 gUnknown_202DE28;
 
+
 u32 sub_8011C1C(void)
 {
     return gUnknown_203B17C;
@@ -29,17 +31,34 @@ u32 sub_8011C4C(void)
     return gUnknown_203B180;
 }
 
-void sub_8011C58(u32 *out, u32 len)
+void CalculateChecksum(u8 *out, u32 size)
 {
-    u32 sum = 0;
-    s32 i = len / 4;
+    u32 checksum = 0;
+    s32 i = size / 4;
     if (i > 1)
     {
-        u32 *ptr = &out[1];
+        u32 *ptr = (u32 *)&out[4];
         --i;
         do
-            sum += *ptr++;
+            checksum += *ptr++;
         while (--i);
     }
-    *out = sum;
-}
\ No newline at end of file
+    *(u32 *)out = checksum;
+}
+
+bool8 ValidateChecksum(u8 *in, u32 size)
+{
+    u32 checksum = 0;
+    s32 i = size / 4;
+    if (i > 1)
+	{
+        u32 *ptr = (u32 *)&in[4];
+        --i;
+        do
+            checksum += *ptr++;
+        while (--i);
+	}
+    if (*(u32 *)in != checksum)
+        return TRUE;
+    return FALSE;
+}
-- 
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