Assembly: what are semantic NOPs?
I was wondering what are "semantic NOPs" in assembly? ...
opcode
PHP Opcode cached in hard disk?
Hi, I have websites developed in PHP. Im using Opcode cache. But because Opcode cache like eAccelerator or APC is cached in RAM, I needs too much RAM. So Im looking for any project or technique which cache the PHP Opcode in hard disk. Thanks so much (my website is not generate money, so Im thinking about cheaper solution) ...
what is the easiest way for opcode caching with PHP/Apache ?
I was thinking to use opcode caching for performance profit what is the easiest way for opcode caching with PHP/Apache ? and what are the performance improvements ? I have read about xDebug but I was wondering if there are more options ? ...
Determining Opcode Cycle Count for a CPU
Hi everyone, I was wondering where would one go about getting CPU opcode cycle counts for various machines. An example of what I'm talking about can be seen at this link: http://www.obelisk.demon.co.uk/6502/reference.html If you examine the MAME source code, especially under src\emu\cpu, you'll see that most of the CPU models keep a t...
intel machine code to assembly code question.
hello,experts,i wonder the intel x86 machineCode/assemblyCode conversion is singleSide or bothSide? means: assemblyCode ---> machineCode and machineCode ---> assemblyCode are both available. since the x86 machineCode is vary in size (1-15 byte),and opcode vary in (1-3 byte),how to determine one opcode is 1byte or 2byte or 3byte ? and...
How to compile PHP into opcode and run it in production environment?
Note,it's not what the recent hiphop project of facebook,I just want to convert it into opcode,not c/c++. Is there a solution yet? A demo is always the best! ...
Optimizing PHP require_once's for low disk i/o?
Q1) I'm designing a CMS (-who isn't!) but priority is being given to caching. Literally everything is cached. DB rows, DB id queries, Configuration data, processed data, compiled templates. Currently it has two layers of caching. The first is a opcode cache or memory cache such as apc, eaccelerator, xcache or memcached. If an entry is ...
What is the role of interfaces IOPCServer, IOPCDataItem, IOPCGroup in OPC ( OLE for process control)
I am currently new in OPC ( OLE for process control). I want to know about the interfaces IOPCServer, IOPCDataItem, IOPCGroup interfaces in the OPC. What are they used for & what is their role in terms of OPC Client & OPC Server & what methods & properties these interfaces conatins ? Can you provide me the answer for the above questions ...
Where is the method call in the EXE file?
Introduction After watching this video from LIDNUG, about .NET code protection http://secureteam.net/lidnug_recording/Untitled.swf (especially from 46:30 to 57:30), I would to locate the call to a MessageBox.Show in an EXE I created. The only logic in my "TrialApp.exe" is: public partial class Form1 : Form { public Form1() { ...
How to develop asp.net web service to create the web method which can take the parameter of type windows form control?
I am developing asp.net web service. I am developing this web service so that OPC ( OLE for process control) client application can use it. In this web service I am using the built-in functions provided by the namespaces using OPC, using OPCDA, using OPCDA.NET. I have also added the namespace using System.Windows.Forms in this web servi...
how to read values from the remote OPC Server
I have created one asp.net web service. In this web service I am using the web method as follows. The web service is related to the OPC ( OLE for process control) public string ReadServerItems(string ServerName) { string txt = ""; ArrayList obj = new ArrayList(); XmlServer Srv = new XmlServer(...
System.AccessViolationException storing a variable with reflectio.emit
Hi, I'm building a compiler with reflection.emit in my spare time, and i've come to a problem that i'm not understanding. A little context, I've a runtime with a couple of types and one of them is Float2, a simpler vector struct with two float values (X and Y). I've made a couple of properties that allow me to swizzle the values (a la h...
Searching for a nice way to define rules for decompiler, need advice
Hi, I am working on a very simple decompiler for MIPS architecture and as I progress I have to define lots of rules for code analysis, for example "if this opcode is lui and next opcode is addiu then return var = value" or "if this opcode is bne and it's referring to address before current - create loop definition in parsing tree". The ...
What OpCodes were introduced in CLR 4.0?
Are there any IL opcodes that are new in .NET 4.0 as compared to 3.5, and if so, where can I find a list of them? ...
Python doesn't have opcode cacher?
Hi, I'm currently using PHP. I plan to start using Django for some of my next project. But I don't have any experience with Python. After some searching, I still can't find a Python opcode cacher. (There are lots of opcode cacher for PHP: APC, eAccelerator, Xcache, ...) ...
Error with short form opcodes in Reflection.Emit
Hi. I'm making a small language that is very similar to hlsl but supports only pixel shaders. This language uses reflection.emit to build dot net assemblies that implement the same functionality. I'm currently testing my implementation of the branch instruction "if" and in one of my unit tests (a large if with inner if else's) failed wit...
where can i find the codes for the machine instructions...
i mean...nop is 90, push is 55 ...the others?any link?i google it but nothing came out... ...
Optimize APC Caching
Hello, here is a link to how my APC is running : http://www.animefushigi.com/apc.php As you can see, it fills up pretty quickly and my Cache Full Count goes over 1000 sometimes My website uses Wordpress. I notice that every time I make a new post or edit a post, 2 things happen. 1) APC Memory "USED" resets 2) I get a whole lot of Fr...
Why is this an invalid operand?
I have the following ASM file generated by a compiler I'm writing: ; This code has been generated by the 7Basic ; compiler <http://launchpad.net/7basic> ; Uninitialized data SECTION .bss v_0 resb 4 v_4 resb 4 v_8 resb 4 ; Code SECTION .text push 1 pop eax mov v_0, eax push 2 pop eax mov v_4, eax mov eax, v_0 push eax ...
How do I get full assembler output in gcc?
I know I can get the assembler source code generated by the compiler by using: gcc -S ... even though that annoyingly doesn't give me an object file as part of the process. But how can I get everything about the compiled code? I mean addresses, the bytes generated and so forth. The instructions output by gcc -S do not tell me anythi...