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README.md

C from assembly

Call the C standard library from assembly.

This is not OS portable because ANSI C does not specify the ABI.

Things which may vary include:

  • calling conventions
  • method names. E.g. Watcom uses puts_ instead of puts

The only way to deal with that is by treating each implementation differently with macros.

The following methods are covered:

  • main/: main function in assembly
  • start/: _start function in assembly, and link with ld
  • start-gcc/: _start function in assembly, and link with gcc