Example source for my calling conventions article

cdecl.c

// gcc -m32 -mpreferred-stack-boundary=2 cdecl.c -o cdecl

#include <stdio.h>

void printFavNums(int num1, int num2) {
	printf("My favorite numbers are %d and %d!\n", num1, num2);
}

int main()
{
    printFavNums(2, 8);
    return 0;
}

fastcall.c

// gcc -m32 -mpreferred-stack-boundary=2 fastcall.c -o fastcall

#include <stdio.h>

__attribute__((fastcall)) void printFavNums(int num1, int num2, int num3) {
	printf("My favorite numbers are %d, %d and %d!\n", num1, num2, num3);
}

int main()
{
    printFavNums(2, 8, 22);
    return 0;
}

noway.c

// gcc -m32 -mpreferred-stack-boundary=2 noway.c -o yesway

#include <stdio.h>

__attribute__((thiscall)) void printFavNums(int favNum1, int favNum2) {
	printf("My favorite numbers are %d and %d!\n", favNum1, favNum2);
}

int main()
{
    printFavNums(2, 8);
    return 0;
}

stdcall.c

// gcc -m32 -mpreferred-stack-boundary=2 stdcall.c -o stdcall

#include <stdio.h>

__attribute__((stdcall)) void printFavNums(int num1, int num2) {
	printf("My favorite numbers are %d and %d!\n", num1, num2);
}

int main()
{
    printFavNums(2, 8);
    return 0;
}

systemv.c

// gcc systemv.c -o systemv

#include <stdio.h>
#include <stdint.h>

void printFavNums(uint64_t n1, uint64_t n2, uint64_t n3, 
				  uint64_t n4, uint64_t n5, uint64_t n6) {
	printf("My favorite numbers are %lld, %lld, %lld, %lld, %lld, and %lld!\n", 
			n1, n2, n3, n4, n5, n6);
}

int main()
{
	uint64_t a, b, c, d, e, f = 0;
	a = 1; 
	b = 2; 
	c = 3; 
	d = 4;
	e = 5;
	f = 6;
	printFavNums(a,b,c,d,e,f);
	return 0;
}

thiscall.cpp

// g++ -m32 -mpreferred-stack-boundary=2 thiscall.cpp -o thiscall
#include <iostream>
#include "bits/c++config.h"

using namespace std;

class FavoriteNumbers {
public:
	int num1, num2;
	//__attribute__((thiscall))
	void printFavNums(int number1, int number2) {
		std::cout << "My favorite numbers are " << number1 
		<< " and " << number2 << endl;
	}
};

int main()
{
	FavoriteNumbers *favNums = new FavoriteNumbers();
	favNums->num1 = 2;
	favNums->num2 = 8;
	favNums->printFavNums(favNums->num1, favNums->num2);
	return 0;
}

variadic.c

// gcc -m32 -mpreferred-stack-boundary=2 variadic.c -o variadic

#include <stdio.h>
#include <stdarg.h>

//__attribute__((stdcall)) 
void printFavNums(char *format, ...) {
   va_list args;
   va_start(args, format);
   vprintf(format, args);
   va_end(args);
}

int main()
{
  printFavNums("My favorite numbers are: %d, %d, and %d!\n", 2, 8, 22);
  return 0;
}

windows_x64.c

#include "stdafx.h"
#include <stdio.h>
#include <stdint.h>

void printFavNums(uint64_t n1, uint64_t n2, uint64_t n3, 
				  uint64_t n4, uint64_t n5, uint64_t n6) {
	printf("My favorite numbers are %lld, %lld, %lld, %lld, %lld, and %lld!\n", 
			n1, n2, n3, n4, n5, n6);
}

int main()
{
	uint64_t a, b, c, d, e, f = 0;
	a = 1; 
	b = 2; 
	c = 3; 
	d = 4;
	e = 5;
	f = 6;
	printFavNums(a,b,c,d,e,f);
	return 0;
}

x86-64.csv

x86.csv