Flat assembler examples

This section contains programs created with the flat assembler and contributed by users as sample material for others to learn from.

Home Search Register Log in to check your private messages Log in. Main index Download Documentation Examples Message board. Also on GitHub , YouTube. Website powered by rwasa. Z 5 01 Sep , by bzt Segmented Kernel. Z 0 02 Jan , by Ali.

Flat assembler examples

FASM flat assembler is an assembler for x86 processors. It supports Intel-style assembly language on the IA and x computer architectures. It claims high speed, size optimizations, operating system OS portability, and macro abilities. It is free and open-source software. The project was started in by Tomasz Grysztar, a. Privalov , at that time an undergraduate student of mathematics from Poland. It was released publicly in March It is self-hosting and has been able to assemble itself since version 0. FASM originally ran in bit flat real mode. Designed to be easy to port to any operating system with flat bit addressing, it was ported to Windows, then Linux.

A simple console calculator written in Flat Assembler. Indeed, flat assembler examples, the wise guidance is to avoid using the preprocessor as long as there's a way to achieve what you're trying to do with just language itself.

Local labels, which begin with a. You can reference a local label in the context of its global label parent. It is used to determine the size of a block of code or data. The rept directive is used to compact repetitive assembly instructions into a block. The directive begins with the word rept , then a number or variable specifying the number of times the assembly instructions inside of the curly braces proceeding the instruction should be repeated. The counter variable can be aliased to be used as a symbol, or as part of an instruction within the rept block.

This section contains programs created with the flat assembler and contributed by users as sample material for others to learn from. Most of them were submitted in the early days of this website, and they all have been designed for flat assembler 1. Nowadays new examples are contributed on the relevant forum. You may find some tutorials there as well. Examples for flat assembler g are gathered in dedicated thread on the message board. Main index Download Documentation Examples Message board. Also on GitHub , YouTube. Website powered by rwasa. Written by tthsqe Base Converter size: 2 kilobytes Conversion between different number systems.

Flat assembler examples

Local labels, which begin with a. You can reference a local label in the context of its global label parent. It is used to determine the size of a block of code or data. The rept directive is used to compact repetitive assembly instructions into a block. The directive begins with the word rept , then a number or variable specifying the number of times the assembly instructions inside of the curly braces proceeding the instruction should be repeated. The counter variable can be aliased to be used as a symbol, or as part of an instruction within the rept block.

North face ambassador program

The backtick operator we're using in the error report turns the macro argument into a string literal. Toggle limited content width. The roots of this peculiar feature, as far as I can tell, lie in the fact that FASM is very obsessive about generating the smallest possible form of machine code. A few example drivers for bit Windows, with set of small applications for installing and removing them. How to display raw image in Win32? Star 0. The following code is completely OK and will emit a binary consisting of a single byte with a value of SEH x64 for Windows. Updated Apr 12, Assembly. Windows hooking example size: 3 kilobytes Run-time opcode modification and hooking an API by detouring method. Updated Feb 7, C. In the case above, a corresponds to the very first argument while b and c correspond to every odd and even arguments following that, in other words: the portion in the square brackets is repeatedly "matched" with the rest of the argument list. Star 1. In the previous part we've covered a lot of ground in a short time - from general introduction and description of how registers and memory work, to actually calling Windows API functions. It sets the target to 0 by xor-ing it with itself , then generates a corresponding add instruction for each of the values passed in as subsequent arguments.

Welcome to the site of the flat assembler! This is a place dedicated to assembly language programming and contains many resources for both beginners and advanced assembly programmers. This site is constantly being improved, and hopefully you'll find here some useful resources, no matter whether you are trying to learn the assembly language, or just looking for a solution to a particular problem.

Written by Tomasz Grysztar DLL interface to call some Java classes from the assembly code. My collection of Win32 programs source codes built with Flat Assembler. We can use it in assembly-time conditions, of course. Reload to refresh your session. It takes a screenshot and saves it into JPEG file. Hidden category: Pages needing attention. Star 0. FAT12 boot loader size: 13 kilobytes. Therefore, something like this:. Updated Mar 14, But, if you're going to be writing assembly manually for whatever reason, might as well give yourself tools to create some semblance of high-level constructs.