Flat assembler examples

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

My collection of Win32 programs source codes built with Flat Assembler. I use Pelles C to create the resources file. Reverse engineered old BigFoot screenmate. Leaves a chain of footprints on your screen from time to time. Flat assembler Windows includes with names in lower case to compile things from Linux. Add a description, image, and links to the flat-assembler topic page so that developers can more easily learn about it. Curate this topic.

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. Brackets are used to denote memory operands as in both assemblers, but their size is placed outside the brackets, like in NASM. FASM is a multi-pass assembler. It makes extensive code-size optimization and allows unconstrained forward referencing.

It is self-hosting and has been able to assemble itself since version 0. In fact, FASM doesn't require the output to be in any particular format - by default it emits just a stream of bytes, in this case - raw machine code, the binary representation of the assembly instructions from the input file. If you now try invoking add5 without any arguments, it will trigger an error "invalid macro arguments" if you tried flat assembler examples without marking the parameter as required, there would still be an error, flat assembler examples, resulting from trying to parse the line add5.

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. Z 2 29 Dec , by Ali.

It is an assembly engine designed as a successor of the one used in flat assembler 1, one of the recognized assemblers for x86 processors. This is a bare engine that by itself has no ability to recognize and encode instructions of any processor, however it has the ability to become an assembler for any CPU architecture. It has a macroinstruction language that is substantially improved compared to the one provided by flat assembler 1 and it allows to easily implement instruction encoders in form of customizable macroinstructions. The source code of this tool can be compiled with flat assembler 1, but it is also possible to use flat assembler g itself to compile it. The source contains clauses that include different header files depending on the assembler used. When flat assembler g compiles itself, it uses the provided set of headers that implement x86 instructions and formats with a syntax mostly compatible with flat assembler 1. The example programs for x86 architecture that come in this package are the selected samples that originally came with flat assembler 1 and they use sets of headers that implement instruction encoders and output formatters required to assemble them just like the original flat assembler did. To demonstrate how the instruction sets of different architectures may be implemented, there are some example programs for the microcontrollers, and AVR. They have been kept simple and therefore they do not provide a complete framework for programming such CPUs, though they may provide a solid base for the creation of such environments.

Flat assembler examples

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.

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Mixing assembly with MS Visual C size: 2 kilobytes. We wouldn't know which form of jump is optimal when we encounter a forward jump: at that time, the target address still hasn't been determined! Written by Mateusz Tymek Nowadays new examples are contributed on the relevant forum. Let's enhance our macro a bit. 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. If you assemble this file, and open the resulting binary, you will see that it consists of a single byte with the value 7! Main index Download Documentation Examples Message board. A simple console calculator written in Flat Assembler. Lock-free singly-linked list and thread creation in Linux. FASM allows you to introduce a certain amount of new syntax using a special match directive, which causes a block of code to be processed when an input sequence matches a certain pattern. Check this out:. The counter variable can be aliased to be used as a symbol, or as part of an instruction within the rept block. As always, read the docs if you're interested in details.

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Updated Aug 17, Assembly. Fractal Explorer 64 size: kilobytes. C lexer in fasmg. You switched accounts on another tab or window. You may find some tutorials there as well. Written by Theodor-Iulian Ciobanu Written by Tomasz Grysztar To associate your repository with the flat-assembler topic, visit your repo's landing page and select "manage topics. A new macroinstruction is defined using the macro directive. Transparent window size: 2 kilobytes Example that uses scrollbar control to set the transparency of its window. Written by tthsqe Windows hooking example size: 3 kilobytes. Star 9. Improve this page Add a description, image, and links to the flat-assembler topic page so that developers can more easily learn about it.