overlay + gamma + frame buffering (in progress)

1 files changed, 68 insertions, 79 deletions

diff --git a/vxd_lib.c b/vxd_lib.c
index 2e53cbb..b8e43a8 100644
--- a/vxd_lib.c
+++ b/vxd_lib.c
@@ -85,6 +85,36 @@ void *memcpy(void *dst, const void *src, unsigned int size)
 	return dst;

 }

 

+unsigned int strlen(const char *s)

+{

+	const char *ptr = s;

+	while(*ptr != '\0') ptr++;

+	return ptr - s;

+}

+

+char *strcpy(char *dst, const char *src)

+{	

+	char *pdst = dst;

+	

+	while(*src != '\0')

+	{

+		*pdst = *src;

+		src++;

+		pdst++;

+	}

+	

+	*pdst = '\0';

+	

+	return dst;

+}

+

+char *strcat(char *dst, const char *src)

+{	

+	unsigned int i = strlen(dst);

+	strcpy(dst+i, src);

+	return dst;

+}

+

 /* temp for reading registry */

 static union

 {

@@ -142,7 +172,7 @@ BOOL RegReadConf(UINT root, const char *path, const char *name, DWORD *out)
  **/

 DWORD Get_VMM_Version()

 {

-	static WORD ver = 0;

+	WORD ver = 0;

 	

 	_asm push ecx

 	_asm push eax

@@ -157,11 +187,8 @@ DWORD Get_VMM_Version()
 

 volatile void __cdecl Begin_Critical_Section(ULONG Flags)

 {

-	static ULONG sFlags;

-	sFlags = Flags;

-	

 	_asm push ecx

-	_asm mov ecx, [sFlags]

+	_asm mov ecx, [Flags]

 	VMMCall(Begin_Critical_Section);

 	_asm pop ecx

 }

@@ -173,48 +200,37 @@ volatile void __cdecl End_Critical_Section()
 

 ULONG __cdecl Create_Semaphore(ULONG TokenCount)

 {

-	static ULONG sTokenCount;

-	static ULONG sSemHandle;

-	sTokenCount = TokenCount;

-	sSemHandle = 0;

-	

+	ULONG SemHandle = 0;

+

 	_asm push eax

 	_asm push ecx

-	_asm mov ecx, [sTokenCount]

+	_asm mov ecx, [TokenCount]

 	VMMCall(Create_Semaphore);

 	_asm {

 		jc create_sem_error

-		mov [sSemHandle], eax

+		mov [SemHandle], eax

 		create_sem_error:

 		pop ecx

 		pop eax

 	}

 	

-	return sSemHandle;

+	return SemHandle;

 }

 

 void __cdecl Destroy_Semaphore(ULONG SemHandle)

 {

-	static ULONG sSemHandle;

-	sSemHandle = SemHandle;

-	

 	_asm push eax

-	_asm mov eax, [sSemHandle]

+	_asm mov eax, [SemHandle]

 	VMMCall(Destroy_Semaphore);

 	_asm pop eax

 }

 

 void __cdecl Wait_Semaphore(ULONG semHandle, ULONG flags)

 {

-	static ULONG sSemHandle;

-	static ULONG sFlags;

-	sSemHandle = semHandle;

-	sFlags     = flags;

-	

 	_asm push eax

 	_asm push ecx

-	_asm mov eax, [sSemHandle]

-	_asm mov ecx, [sFlags]

+	_asm mov eax, [semHandle]

+	_asm mov ecx, [flags]

 	VMMCall(Wait_Semaphore);

 	_asm pop ecx

 	_asm pop eax

@@ -222,22 +238,16 @@ void __cdecl Wait_Semaphore(ULONG semHandle, ULONG flags)
 

 void __cdecl Signal_Semaphore(ULONG SemHandle)

 {

-	static ULONG sSemHandle;

-	sSemHandle = SemHandle;

-	

 	_asm push eax

-	_asm mov eax, [sSemHandle]

+	_asm mov eax, [SemHandle]

 	VMMCall(Signal_Semaphore);

 	_asm pop eax

 }

 

 void __cdecl Resume_VM(ULONG VM)

 {

-	static ULONG sVM;

-	sVM = VM;

-	

 	_asm push ebx

-	_asm mov ebx, [sVM]

+	_asm mov ebx, [VM]

 	VMMCall(Resume_VM);

 	_asm pop ebx	

 }

@@ -249,19 +259,14 @@ void Release_Time_Slice()
 

 void __cdecl *Map_Flat(BYTE SegOffset, BYTE OffOffset)

 {

-	static BYTE sSegOffset;

-	static BYTE sOffOffset;

-	static void *result;

-	

-	sSegOffset = SegOffset;

-	sOffOffset = OffOffset;

+	void *result = NULL;

 	

 	_asm

 	{

 		push eax

 		xor eax, eax

-		mov al, [sOffOffset]

-		mov ah, [sSegOffset]

+		mov al, [OffOffset]

+		mov ah, [SegOffset]

 	}

 	VMMCall(Map_Flat);

 	_asm

@@ -275,12 +280,6 @@ void __cdecl *Map_Flat(BYTE SegOffset, BYTE OffOffset)
 

 void __cdecl Install_IO_Handler(DWORD port, DWORD callback)

 {

-	static DWORD sPort = 0;

-	static DWORD sCallback = 0;

-

-	sPort = port;

-	sCallback = callback;

-	

 /*

  * esi <- IOCallback

  * edx <- I/O port numbers

@@ -289,8 +288,8 @@ void __cdecl Install_IO_Handler(DWORD port, DWORD callback)
 	{

 		push esi

 		push edx

-		mov esi, [sCallback]

-		mov edx, [sPort]

+		mov esi, [callback]

+		mov edx, [port]

 	}

 	VMMCall(Install_IO_Handler);

 	_asm

@@ -302,8 +301,8 @@ void __cdecl Install_IO_Handler(DWORD port, DWORD callback)
 

 DWORD __cdecl _GetFreePageCount(DWORD *pLockablePages)

 {

-	static DWORD sLockablePages = 0;

-	static DWORD sFreePages = 0;

+	DWORD LockablePages = 0;

+	DWORD FreePages = 0;

 	_asm

 	{

 		push edx

@@ -313,19 +312,19 @@ DWORD __cdecl _GetFreePageCount(DWORD *pLockablePages)
 	VMMCall(_GetFreePageCount);

 	_asm

 	{

-		mov [sLockablePages], edx

-		mov [sFreePages], eax

+		mov [LockablePages], edx

+		mov [FreePages], eax

 		pop eax

 		pop ecx

 		pop edx

 	}

 	

-	if(pLockablePages != NULL)

+	if(LockablePages != NULL)

 	{

-		*pLockablePages = sLockablePages;

+		*pLockablePages = LockablePages;

 	}

 	

-	return sFreePages;

+	return FreePages;

 }

 

 static void __declspec(naked) __cdecl _BuildDescriptorDWORDs_(ULONG DESCBase, ULONG DESCLimit, ULONG DESCType, ULONG DESCSize, ULONG flags)

@@ -335,18 +334,18 @@ static void __declspec(naked) __cdecl _BuildDescriptorDWORDs_(ULONG DESCBase, UL
 

 void __cdecl _BuildDescriptorDWORDs(ULONG DESCBase, ULONG DESCLimit, ULONG DESCType, ULONG DESCSize, ULONG flags, DWORD *outDescHigh, DWORD *outDescLow)

 {

-	static DWORD sHigh;

-	static DWORD sLow;

+	DWORD High = 0;

+	DWORD Low = 0;

 	

 	_BuildDescriptorDWORDs_(DESCBase, DESCLimit, DESCType, DESCSize, flags);

 	_asm

 	{

-		mov [sHigh], edx

-		mov [sLow],  eax

+		mov [High], edx

+		mov [Low],  eax

 	}

 	

-	*outDescHigh = sHigh;

-	*outDescLow  = sLow;

+	*outDescHigh = High;

+	*outDescLow  = Low;

 }

 

 static void __declspec(naked) __cdecl _Allocate_LDT_Selector_(ULONG vm, ULONG DescHigh, ULONG DescLow, ULONG Count, ULONG flags)

@@ -356,8 +355,8 @@ static void __declspec(naked) __cdecl _Allocate_LDT_Selector_(ULONG vm, ULONG De
 

 void __cdecl _Allocate_LDT_Selector(ULONG vm, ULONG DescHigh, ULONG DescLow, ULONG Count, ULONG flags, DWORD *outFirstSelector, DWORD *outSelectorTable)

 {

-	static DWORD firstSelector;

-	static DWORD selectorTable;

+	DWORD firstSelector = 0;

+	DWORD selectorTable = 0;

 	

 	_Allocate_LDT_Selector_(vm, DescHigh, DescLow, Count, flags);

 	_asm

@@ -384,8 +383,8 @@ static void __declspec(naked) __cdecl _Allocate_GDT_Selector_(ULONG DescHigh, UL
 

 void __cdecl _Allocate_GDT_Selector(ULONG DescHigh, ULONG DescLow, ULONG flags, DWORD *outFirstSelector, DWORD *outSelectorTable)

 {

-	static DWORD firstSelector;

-	static DWORD selectorTable;

+	DWORD firstSelector = 0;

+	DWORD selectorTable = 0;

 	

 	_Allocate_GDT_Selector_(DescHigh, DescLow, flags);

 	_asm

@@ -479,37 +478,27 @@ DWORD __declspec(naked) __cdecl _RegQueryValueEx(DWORD hKey, char *lpszValueName
 

 void Enable_Global_Trapping(DWORD port)

 {

-	static DWORD sPort = 0;

-	sPort = port;

-	

 	_asm push edx

-	_asm mov edx, [sPort];

+	_asm mov edx, [port];

 	VMMCall(Enable_Global_Trapping);

 	_asm pop edx

 }

 

 void Disable_Global_Trapping(DWORD port)

 {

-	static DWORD sPort = 0;

-	sPort = port;

-	

 	_asm push edx

-	_asm mov edx, [sPort];

+	_asm mov edx, [port];

 	VMMCall(Disable_Global_Trapping);

 	_asm pop edx

 }

 

 BOOL VPICD_Virtualize_IRQ(struct _VPICD_IRQ_Descriptor *vid)

 {

-	static VPICD_IRQ_Descriptor *svid;

-	static BOOL r;

-	

-	r = 0;

-	svid = vid;

+	BOOL r = 0;

 	

 	_asm {

 		push edi

-		mov edi, [svid]

+		mov edi, [vid]

 	};

 	VxDCall(VPICD, Virtualize_IRQ)

 	_asm {