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CDECL calling convention  32 BIT
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void test_CDECL( int a, int b, int c, int d );

Four parameters to be pushed in right-to-left order

push 4 ; param d :esp -= 4
push 3 ; param c :esp -= 4 
push 2 ; param b :esp -= 4
push 1 ; param a :esp -= 4
call test_CDECL
add esp, 16      :esp += 16


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stdcall 32 BIT
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Parameters are pushed the same as CDECL, however the called function is responsible for clearing the stack.
ie.
ret 16;          : esp += 16


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fastcall
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first two parameters (right to left) are put in ECX, and EDX - in that order. Rest of parameters are pushed right-to-left

ret 8;  : esp += 8