shellcodetest.c

#include <sys/mman.h>

#include <string.h>

#include <stdio.h>

char sc[]= "your shellcode here";

int main(){

        void * a = mmap(0, 4096, PROT_EXEC |PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, -1, 0);

        printf("allocated executable memory at: %p\n", a);

        ((void (*)(void)) memcpy(a, sc, sizeof(sc)))();

}