Managed C++/CLI

30-Jan-06 23:04

hello everyone.

I need to include a few lines of asm code (crc32 routine) in c++ code. I tried asm(" asm-code-here");, or _asm { ... }, or __asm__ { ...} but none had worked.

The asm code is:
asm ("push esi ;
push edi ;
mov eax, dwCrc32 ;
mov ecx, [eax];
mov edi, Crc32Table ;
lea esi, buf ;
mov ebx, length ;
lea edx, [esi + ebx] ;
crc32loop:
xor eax, eax ;
mov bl, byte ptr [esi] ;
mov al, cl ;
inc esi;
xor al, bl ;
shr ecx, 8 ;
mov ebx, [edi + eax * 4];
xor ecx, ebx ;
cmp edx, esi ;
jne crc32loop ;
pop edi ;
pop esi ;
mov eax, dwCrc32 ;
mov [eax], ecx");

P.S. i tried adding a \ character to each end of line, or make a long line out of it, but i couldn't even compile it.

Please help. Smile | :)

James Gupta31-Jan-06 1:43

James Gupta

31-Jan-06 1:43

From memory, in the MS compilers i think you can use inline asm by typing "_asm" where you want to start the assembly, and then "asm_" at the end

it may be the other way around though lol

toxcct31-Jan-06 2:23

31-Jan-06 2:23

the keyword is __asm { ... } (two underscores...)

with gcc, also try this (a little search on google might have help you) :

asm ("pushl %eax\n\t"
     "movl $0, %eax\n\t"
     "popl %eax");

ps: this is the C++/CLI forum, ,so only Managed C++ questions should be asked here...

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-- modified at 8:27 Tuesday 31st January, 2006

gecool31-Jan-06 2:34

31-Jan-06 2:34

i tried that out , but didn't work. i even added -masm=intel on the command line but it turned out of no use. That is i don't really like/know at&t (% stuff) conventions, so i preffered to stick with intel. When i use __asm, or asm or _asm_ or __asm__, i get the same error: "syntax error before '}' ... " . i dug in google results, but i didn't worked it out yet ;-(

toxcct31-Jan-06 2:36

31-Jan-06 2:36

what about using parenthesis ( ) instead of curly braces { } ?

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gecool31-Jan-06 2:42

31-Jan-06 2:42

i tried that too. whith one big string, like
asm ("mov eax, ebx"
"lea ..."
"xor eax, eax"), or like
asm ("mov ... ; \
lea .... ; \
") I tried without the semicolon too, but didn't work ;-(

toxcct31-Jan-06 7:49

Re: windows startup registry

31-Jan-06 7:49

and my last try :

asm("mov eax, ebx");
asm("lea ...");
asm("xor eax, eax");

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windows startup registry

hyyppa30-Jan-06 7:20

hyyppa

30-Jan-06 7:20

Can someone tell me some simble code which add my program into startup registry.(english isn`t my first language Sniff | :^)

)

Saksida Bojan30-Jan-06 10:01

Saksida Bojan

30-Jan-06 10:01

hyyppa wrote:
an someone tell me some simble code which add my program into startup registry

neither mine. And you are not alone in this? Laugh | :laugh:

// if you use "HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run" is for current logged user or
// if you use "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run" is for all users
String ^exePath = Application::ExecutablePath; // Get Executable Path of your project
if ((Registry::GetValue("HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", "Program Name", ""))->Equals(""))
{
	Registry::SetValue("HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", "Program Name", exePath, RegistryValueKind::String);
}
else
	MessageBox::Show("Already in Registry");

-- modified at 16:02 Monday 30th January, 2006

Re: windows startup registry

hyyppa31-Jan-06 4:09

hyyppa

31-Jan-06 4:09

Thousands thanks for you Smile | :)

help me

shosho-only30-Jan-06 2:30

shosho-only

30-Jan-06 2:30

This is a part of project.. can i get help in this project !!
Cry | :((

:((
Exercise 1:
A server that echoes client input
You are required to produce client and server programs based on the procedures DoOperation , GetRequest and SendReply (see CDK3 Section 4.4). These operations have been simplified so that client and server exchange messages consisting of strings. In Exercise 2, you will put the arguments of DoOperation (such as the procedure identifier) into a request message.

The client and server behave as follows:

Client: this takes the name of the server computer as an argument. It repeatedly requests a string to be entered by the user, and uses DoOperation to send the string to the server, awaiting a reply. Each reply should be printed out.

Server: repeatedly receives a string using GetRequest, prints it on the screen and replies with SendReply. The server exits when the string consists of the single character `q'.

Use the following (or equivalent C) definitions for Status and SocketAddress , which are in C++.

--------------------------------------------------------------------------------

enum Status
{ Ok, // operation successful
Bad, // unrecoverable error
Wronglength // bad message length supplied
};
typedef sockaddr_in SocketAddress;

--------------------------------------------------------------------------------
Implement DoOperation, GetRequest and SendReply. The recommended prototypes are given in the definitions in the appendices. In the C++ definitions they are included in the classes Client and Server . The Status value returned reflects the values returned by UDPsend and UDPreceive (see below).
DoOperation
sends a given request message to a given socket address and blocks until it returns with a reply message.

GetRequest
receives a request message and the client's socket address.

SendReply
sends a reply message to the given client's socket address.

UDPsend and UDPreceive
The procedures DoOperation, GetRequest and SendReply must use two procedures UDPsend and UDPreceive to be written by you, which respectively send and receive a message over/from a socket. You are to implement these functions using the system calls sendto and recvfrom.

Each procedure returns a value of type Status which reports on the success of its execution. For example, if the sendto or recvfrom system calls return negative values, your procedures should return a Status value of Bad.

UDPsend
sends a given message through a socket to a given socket address.
UDPreceive
receives a message and the socket address of the sender into two arguments.

Use the recommended definitions for SocketAddress and Message and the recommended prototypes for UDPsend and UDPreceive. In the C++ defintions, the latter are to be found in class Socket.

Choosing a server port
You will want to run server processes that can coexist with other people's processes in the same computer. You need to select an agreed port number for the server to receive messages from clients. Two servers on the same computer cannot use the same local port number. You will therefore want to choose a port number that is sure to be different from other people's port numbers. If everybody takes the first unreserved port number and adds their uid, there should be no such clashes - i.e. :

aPort = IPPORT_RESERVED + getuid() ;
How unreliable are datagrams?
As part of this exercise, you should design an experiment to find out whether you can cause datagrams to be dropped. Describe the experiment and discuss its results in a comment in your client program.

please don't forget to help me

toxcct30-Jan-06 2:38

30-Jan-06 2:38

shhhhhhhhhhh

Sleepy | :zzz:

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shosho-only30-Jan-06 2:45

shosho-only

30-Jan-06 2:45

realy .. i neeeeeeed help quickly

heeeeeeeeelp help

toxcct30-Jan-06 2:46

30-Jan-06 2:46

send money first...

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

shosho-only30-Jan-06 2:49

shosho-only

30-Jan-06 2:49

how much !!

toxcct30-Jan-06 2:50

30-Jan-06 2:50

10000.00€ first, the second half when the job's done Suspicious | :suss:

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toxcct30-Jan-06 2:58

30-Jan-06 2:58

shosho-only wrote:
ok .. how can i send the money

paypal buddy... :->

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Cedric Moonen30-Jan-06 3:56

Cedric Moonen

30-Jan-06 3:56

You really think that people here will do your homework for you ?
Did you even try to get started ?

We can help you if you post SPECIFIC QUESTIONS. So, start to work it out and when you are stuck ask a question.

toxcct30-Jan-06 5:55

How to implement linux squid ?

30-Jan-06 5:55

Cedric Moonen wrote:
So, start to work it out and when you are stuck ask a question.

...in the right forum ...! D'Oh! | :doh:

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[toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

Ariston Darmayuda28-Jan-06 21:56

Ariston Darmayuda

28-Jan-06 21:56

Hi there, i have read reference about linux and found something nice. SQUID Big Grin | :-D

, it like a firewall but we can reject a packet request. But the problem is linux, it's so dificult to create application on it Confused | :confused:

. So i want to get the SQUID into windows.

I have read article in here provide by Jesus O, about Packet Filter API, and Sniffer article, i want to combine it both, but the problem is how to block or reject the request, not block the IP address. For example if someone request :
http://ww.somewhere.com/somefile.mov

Then we put filter of file (not filtering IP address). For this we filter any file that have extension *.mov, then the request above will be rejected.

How can we make that, i hope anyone can help.

Thanks.

Re: How to implement linux squid ?

gecool30-Jan-06 23:08

Re: How to implement linux squid ?

30-Jan-06 23:08

If u are looking for squid for windows (since u said it is so hard to write appz 4 linux), check this out:

http://www.acmeconsulting.it/pagine/opensource/squid/SquidNT.htm
http://www.acmeconsulting.it/pagine/opensource/squid/squidnt25.htm

P.S.
google did it again Big Grin | :-D

Ariston Darmayuda31-Jan-06 3:30

Ariston Darmayuda

31-Jan-06 3:30

Thanks bro, that excellent links. The links have source code to (it open source ofcourse). Thanks a lot.
Have a nice day. Cool | :cool:

Re: How to implement linux squid ?

gecool31-Jan-06 3:41