c - How to make change gcc calling convention

Question

Hi I would like to tell gcc how to call functions, for example:

    __mycall void my_function(arg1) {
        do_something(arg1)
    }

    __mycall:
        move $a0, (the first argument)
        jalr (the function we should call)
        nop

I would like the generated assembly code of:

    my_function(1);

To be

    move $a0, 1
    jalr my_function
    nop

I obviously don't want to implement stdcall or fastcall or something like that, i just explained by an example.

I don't think it should be hard to do that but I don't find any example on how to do that I can write inline assembly and call my function with inline assembly but it is ugly, I will appreciate help (:

question from:https://stackoverflow.com/questions/65645610/how-to-make-change-gcc-calling-convention

Answer 1

Waitting for answers