MHR-36: Running run_format.

Signed-off-by: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/Kernel/KernelKit/MSDOS.hxx b/Kernel/KernelKit/MSDOS.hxx
new file mode 100644
index 00000000..7b0c2a2f
--- /dev/null
+++ b/Kernel/KernelKit/MSDOS.hxx
@@ -0,0 +1,70 @@
+/* -------------------------------------------
+
+	Copyright Zeta Electronics Corporation
+
+	File: MSDOS.hpp
+	Purpose: MS-DOS header for Kernel.
+
+	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 Kernel::UInt32 DosWord;
+typedef Kernel::Long   DosLong;
+
+typedef struct _DosHeader
+{
+	Kernel::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 Kernel
+{
+	/// @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 Kernel
+
+#endif /* ifndef __MSDOS_EXEC__ */