/*  hellogcc.c, gcc program prints "Hello, world" using inline assembler

To compile using DJGPP or MINGW in one step:

  gcc hellogcc.c -o hellogcc.exe

To compile, producing intermediate assembly code, hellogcc.s

  gcc -S hellogcc.c
  gcc hellogcc.s -o hellogcc.exe

*/

#include <stdio.h>

const char msg[] = "Hello, world\n";

main() {

  // g++ uses AT&T sytle assembly language.  See
  // http://www.delorie.com/djgpp/doc/brennan/brennan_att_inline_djgpp.html

  asm(                  // Equivalent MASM is:
    "pushl $_msg\n\t"   // pushd offset _msg  ; pass argument to printf
    "call _printf\n\t"  // call _printf       ; printf(msg);
    "addl $4, %esp\n\t" // add esp, 4         ; pop argument
  );
  return 0;
}