asmix test code

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <inttypes.h>

typedef int (*somefn) ( int, int );

int main()
{
    char prebuf[ 512 ];
    int precnt = 0;

    int randnum = rand();

#define APPEND_CODE( cb, cbsize ) \
    memcpy( prebuf + precnt, cb, cbsize ); \
    precnt += cbsize;

    // return ( randnum + arg0 ) * arg1
    <$
    mov eax, :i32(randnum)
    add eax, [esp+4]
    imul eax, [esp+8]
    ret
    $>
#undef APPEND_CODE

    while( precnt % 4 != 0 )
        prebuf[ precnt++ ] = 0x90; // padding NOP

    void* func = VirtualAlloc( NULL, precnt, MEM_COMMIT, PAGE_EXECUTE_READWRITE );
    memcpy( func, prebuf, precnt );

    int test = ((somefn)func)( 3, 2 );
    printf( "random number: %d\nreturn value: %d\n", randnum, test );

    return 0;
}