From c606f0866c3a2a5db3ef9bc41738ef33eb9612a9 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Sat, 22 Jun 2013 16:16:13 +0200
Subject: Add original TrueCrypt 7.1a sources

---
 src/Boot/Windows/BootDebug.cpp | 177 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100644 src/Boot/Windows/BootDebug.cpp

(limited to 'src/Boot/Windows/BootDebug.cpp')

diff --git a/src/Boot/Windows/BootDebug.cpp b/src/Boot/Windows/BootDebug.cpp
new file mode 100644
index 00000000..e422767a
--- /dev/null
+++ b/src/Boot/Windows/BootDebug.cpp
@@ -0,0 +1,177 @@
+/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#include "Platform.h"
+#include "Bios.h"
+#include "BootConsoleIo.h"
+#include "BootDefs.h"
+#include "BootDiskIo.h"
+#include "BootDebug.h"
+
+
+#ifdef TC_BOOT_TRACING_ENABLED
+
+void InitDebugPort ()
+{
+	__asm
+	{
+		mov dx, TC_DEBUG_PORT
+		mov ah, 1
+		int 0x17
+		mov dx, TC_DEBUG_PORT
+		mov ah, 0xe2
+		int 0x17
+	}
+}
+
+
+void WriteDebugPort (byte dataByte)
+{
+	__asm
+	{
+		mov al, dataByte
+		mov dx, TC_DEBUG_PORT
+		mov ah, 0
+		int 0x17
+	}
+}
+
+#endif // TC_BOOT_TRACING_ENABLED
+
+
+#ifdef TC_BOOT_DEBUG_ENABLED
+
+extern "C" void PrintDebug (uint32 debugVal)
+{
+	Print (debugVal);
+	PrintEndl();
+}
+
+
+void PrintVal (const char *message, const uint32 value, bool newLine, bool hex)
+{
+	Print (message);
+	Print (": ");
+	
+	if (hex)
+		PrintHex (value);
+	else
+		Print (value);
+	
+	if (newLine)
+		PrintEndl();
+}
+
+
+void PrintVal (const char *message, const uint64 &value, bool newLine, bool hex)
+{
+	Print (message);
+	Print (": ");
+	PrintHex (value);
+	if (newLine)
+		PrintEndl();
+}
+
+
+void PrintHexDump (byte *mem, size_t size, uint16 *memSegment)
+{
+	const size_t width = 16;
+	for (size_t pos = 0; pos < size; )
+	{
+		for (int pass = 1; pass <= 2; ++pass)
+		{
+			size_t i;
+			for (i = 0; i < width && pos < size; ++i)
+			{
+				byte dataByte;
+				if (memSegment)
+				{
+					__asm
+					{
+						push es
+						mov si, ss:memSegment
+						mov es, ss:[si]
+						mov si, ss:mem
+						add si, pos
+						mov al, es:[si]
+						mov dataByte, al
+						pop es
+					}
+					pos++;
+				}
+				else
+					dataByte = mem[pos++];
+
+				if (pass == 1)
+				{
+					PrintHex (dataByte);
+					PrintChar (' ');
+				}
+				else
+					PrintChar (IsPrintable (dataByte) ? dataByte : '.');
+			}
+
+			if (pass == 1)
+			{
+				pos -= i;
+				PrintChar (' ');
+			}
+		}
+
+		PrintEndl ();
+	}
+}
+
+
+void PrintHexDump (uint16 memSegment, uint16 memOffset, size_t size)
+{
+	PrintHexDump ((byte *) memOffset, size, &memSegment);
+}
+
+#endif // TC_BOOT_DEBUG_ENABLED
+
+
+#ifdef TC_BOOT_STACK_CHECKING_ENABLED
+
+extern "C" char end[];
+
+static void PrintStackInfo ()
+{
+	uint16 spReg;
+	__asm mov spReg, sp
+
+	Print ("Stack: "); Print (TC_BOOT_LOADER_STACK_TOP - spReg);
+	Print ("/"); Print (TC_BOOT_LOADER_STACK_TOP - (uint16) end);
+}
+
+
+void CheckStack ()
+{
+	uint16 spReg;
+	__asm mov spReg, sp
+
+	if (*(uint32 *) end != 0x12345678UL || spReg < (uint16) end)
+	{
+		__asm cli
+		__asm mov sp, TC_BOOT_LOADER_STACK_TOP
+
+		PrintError ("Stack overflow");
+		TC_THROW_FATAL_EXCEPTION;
+	}
+}
+
+
+void InitStackChecker ()
+{
+	*(uint32 *) end = 0x12345678UL;
+
+	PrintStackInfo();
+	PrintEndl();
+}
+
+#endif // TC_BOOT_STACK_CHECKING_ENABLED
-- 
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