From 09dd11ddf800898c00ecb04a65fb5cd10fb481fa Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
Date: Wed, 8 May 2024 12:32:41 +0200
Subject: MHR-23: :boom: changes, reworked project tree.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
---
 NewKernel/KernelKit/MSDOS.hpp | 68 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 NewKernel/KernelKit/MSDOS.hpp

(limited to 'NewKernel/KernelKit/MSDOS.hpp')

diff --git a/NewKernel/KernelKit/MSDOS.hpp b/NewKernel/KernelKit/MSDOS.hpp
new file mode 100644
index 00000000..41e8340f
--- /dev/null
+++ b/NewKernel/KernelKit/MSDOS.hpp
@@ -0,0 +1,68 @@
+/* -------------------------------------------
+
+    Copyright Mahrouss Logic
+
+    File: MSDOS.hpp
+    Purpose: MS-DOS header for NewOS.
+
+    Revision History:
+
+    30/01/24: Added file (amlel)
+
+------------------------------------------- */
+
+#ifndef __MSDOS_EXEC__
+#define __MSDOS_EXEC__
+
+#include <KernelKit/PE.hxx>
+#include <NewKit/Defines.hpp>
+
+// Last Rev
+// Sat Feb 24 CET 2024
+
+#define kMagMz0 'M'
+#define kMagMz1 'Z'
+
+typedef NewOS::UInt32 DosWord;
+typedef NewOS::Long	  DosLong;
+
+typedef struct _DosHeader
+{
+	NewOS::UInt8 eMagic[2];
+	DosWord		 eMagLen;
+	DosWord		 ePagesCount;
+	DosWord		 eCrlc;
+	DosWord		 eCParHdr;
+	DosWord		 eMinAlloc;
+	DosWord		 eMaxAlloc;
+	DosWord		 eStackSeg;
+	DosWord		 eStackPtr;
+	DosWord		 eChksum;
+	DosWord		 eIp;
+	DosWord		 eCs;
+	DosWord		 eLfarlc;
+	DosWord		 eOvno;
+	DosWord		 eRes[4];
+	DosWord		 eOemid;
+	DosWord		 eOeminfo;
+	DosWord		 eRes2[10];
+	DosLong		 eLfanew;
+} DosHeader, *DosHeaderPtr;
+
+namespace NewOS
+{
+	/// @brief Find the PE header inside the the blob.
+	inline auto rt_find_exec_header(DosHeaderPtr ptrDos) -> VoidPtr
+	{
+		if (!ptrDos)
+			return nullptr;
+		if (ptrDos->eMagic[0] != kMagMz0)
+			return nullptr;
+		if (ptrDos->eMagic[1] != kMagMz1)
+			return nullptr;
+
+		return (VoidPtr)(&ptrDos->eLfanew + 1);
+	}
+} // namespace NewOS
+
+#endif /* ifndef __MSDOS_EXEC__ */
-- 
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