Command Line Arguments

Recall

In order to use command line arguments in C++, we add parameters to the main function:

int main(int argc, char* argv[]) { 
    /* some code */
    return 0;
}

In x86, command line arguments require C++ connectivity.

First, you must use global main instead of global _start because as you know, C++ uses main as its starting function.

Thus, the parameters are the same as in c++, but with their register names:

• edi i.e.t. argc
• rsi i.e.t. argv
  Since argv is an array of pointers, you must dereference them.