From 902d4a042ee8525b63e23dfdfb4ef35f4d7ba134 Mon Sep 17 00:00:00 2001
From: huangjintao <u202017189@hust.edu.cn>
Date: Wed, 26 Apr 2023 21:14:35 +0800
Subject: [PATCH] =?UTF-8?q?d1:=20=E5=9C=A8D1Image.bt=E4=B8=8A=E5=8A=A0?=
 =?UTF-8?q?=E5=85=A5checksum=E6=A3=80=E6=B5=8B=E6=A8=A1=E5=9D=97?=
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Signed-off-by: huangjintao <u202017189@hust.edu.cn>
---
 D1Image.bt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/D1Image.bt b/D1Image.bt
index b0cabaf..c8ed798 100644
--- a/D1Image.bt
+++ b/D1Image.bt
@@ -38,6 +38,19 @@ if (correct_magic != head.magic) {
     Warning("wrong magic!");
 }  
 
+local uint32 tmp_check_num = 0;
+local uint64 i;
+for(i = 10h; i<FileSize(); i+=4){
+    tmp_check_num += ReadUInt(i);
+}
+tmp_check_num += ReadUInt(0);
+tmp_check_num += ReadUInt(4);
+tmp_check_num += ReadUInt(8);
+tmp_check_num += 0x5F0A6C39; // stamp number
+if (tmp_check_num != ReadUInt(0xC)) {
+    Warning("Wrong check_num!");
+}
+
 local uint32 opcode = head.jump_instruction & 0x7f;
 // 0x6f JAL opcode 
 if (opcode == 0x6f) 
-- 
Gitee