Masm example program

If you are writing assembly language functions that will link with C, and you're using gcc, you must obey the gcc calling conventions. These are:. This program prints the first few fibonacci numbers, illustrating how registers have to be saved and restored:. This program is just a simple function that takes in three integer parameters and returns the maximum value.

You know that in C, main is just a plain old function, and it has a couple parameters of its own:. Here is a program that uses this fact to simply echo the commandline arguments to a program, one per line:. Note that as far as the C Library is concerned, command line arguments are always strings. If you want to treat them as integers, call atoi. Select the project in Solution Explorer. On the menu bar, choose Project , Build Customizations. Choose OK to save your selection and close the dialog box.

In the Name edit control, enter a new file name that has a. Choose Add to add the file to your project and close the dialog box. Create your assembler-language code in the. When you build your solution, the MASM assembler is invoked to assemble the. You can use the following mlspecific directives in your assembler-language source code that targets x The PROC directive has also been updated for use with ml MASM emits the 0x67 address size override if a memory operand includes bit registers.

For example, the following examples cause the address size override to be emitted:. MASM assumes bit addressing if a bit displacement appears alone as a memory operand. Add a comment. Active Oldest Votes. Mike Koch 1, 2 2 gold badges 17 17 silver badges 22 22 bronze badges. Madhur Ahuja Madhur Ahuja I am looking at them and they are indeed a good set of tutorials but almost all programing tutorials start you off with the console and command line applications.

I agree, but its an exception in case of win32 programming, because here you are not learning the language but the win32 platform. This sample code is simpler and easy to understand.

Uh this is a rather old b doesnt do what the code is suppose to! This is not old The invoke is a quicker way rather than pushing parameters — justyy. Um this question is over a year old it is old Also this is to show how to do it without invoke which does a lot of things for you.

StdOut is a console function You can use MessageBox function Mario Augusto Mario Augusto 95 6 6 bronze badges. This was for the classical hello world, just like in c with printf. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.