Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
How can you generate a flat binary that will run directly on the CPU?
That is, without an Operating System; also called free standing environment code (see What is the name for a program running directly without an OS?).
I’ve noticed that the assembler I’m using, as from the OS-X developer tools bundle, keeps generating Mach-O files, and not flat binaries.
You don’t. You get the linker to produce a flat (pure) binary. To do that, you have to write a linker script file with
OUTPUT_FORMAT(binary). If memory serves, you also need to specify something about how the sections are merged, but I don’t remember any of the details.