Cheat Engine

[fjfc]

Here's the thing, i'm trying to compile one of my drivers to use on XP X64 edition.
So compiling it with the WDK for Windows server 2008 (microsoft website tolt us to compile drivers to use on xp x64 with this environment)
i realized that i cannot use __asm...
so i need help because i use one of the famous
__asm
{
cli
mov eax, cr0
mov _cr0, eax
and eax, 0fffeffffh
mov cr0, eax
}

on my driver and i don't know how to make it w/out the __asm statemente. someone can help me? thanks

[hcavolsdsadgadsg]

intrinsics?

[fjfc]

how?

[Dark Byte]

64-bit microsoft c compilers, do not support inline assembler.

If you want to use assembler, then create a separate assembler file compile that in, and call the functions of the assembler file from your c-code

[fjfc]

I've tried that DB... i've included one func.asm in my sources, like:

TARGETNAME=x
TARGETPATH=obj
TARGETTYPE=DRIVER
SOURCES=x.c y.c func.asm

but then i get this error:

BUILD: Examining d:\x directory for files to compile.
skipping post pass 0 command
Compiling and Linking d:\x *************
'nmake.exe /nologo BUILDMSG=Stop. -i /nologo /f d:\winddk\6001.18001\bin\makefile.def BUILD_PASS=PASS2 LINKONLY=1 NOPASS0=1 MAKEDIR_RELATIVE_TO_BASEDIR='
d:\x: TARGETPATH is obj
NMAKE : fatal error U1073: don't know how to make 'd:\x\objfre_wlh_ia64\ia64\func.obj'
errors in directory d:\bypass
NMAKE : fatal error U1073: don't know how to make 'd:\x\objfre_wlh_ia64\ia64\func.obj'
Stop.
errors in directory d:\x
nmake.exe /nologo BUILDMSG=Stop. -i /nologo /f d:\winddk\6001.18001\bin\makefile.def BUILD_PASS=PASS2 LINKONLY=1 NOPASS0=1 MAKEDIR_RELATIVE_TO_BASEDIR= failed - rc = 2

[Zerith]

Microsoft C compiler isn't suppose to know how to compile ASM files..
I would suggest making the functions extern and linking an object file generated from these asm files (keep note that i have no knowledge at 64bit microsoft compilers)

[Dark Byte]

bump for those that have the same question but don't know the answer

[Guy]

Like slovach said, use intrinsics:

__readcr0 - http://msdn.microsoft.com/en-us/library/xd9dtxk3.aspx
__writecr0 - http://msdn.microsoft.com/en-us/library/ewd38ezs.aspx

_disable - http://msdn.microsoft.com/en-us/library/y14401ab.aspx
_enable - http://msdn.microsoft.com/en-us/library/ad820yz3.aspx

[Dark Byte]

of course, there's still some reasons to use assembler.
e.g: the intrinsic to get the GDT address and limit (sgdt) is missing.