/*
  by Luigi Auriemma
*/

static unsigned char    undk2_dump[] =
    "\x8b\x54\x24\x08\x83\xec\x0c\x33\xc0\x53\x55\x56\x8b\x74\x24\x1c"
    "\x85\xd2\x57\x0f\x84\xc6\x01\x00\x00\x8a\x02\x8d\x4a\x01\x33\xd2"
    "\x8a\x11\xc1\xe0\x08\x03\xc2\x41\xf6\xc4\x01\x74\x03\x83\xc1\x03"
    "\x33\xc0\x33\xd2\x8a\x01\x8a\x51\x01\x41\xc1\xe0\x08\x03\xc2\x41"
    "\x33\xd2\x8a\x11\xc1\xe0\x08\x03\xc2\x41\x8a\x19\x41\xf6\xc3\x80"
    "\x88\x5c\x24\x10\x75\x58\x8a\x11\x41\x88\x54\x24\x20\x8b\x54\x24"
    "\x10\x81\xe2\xff\x00\x00\x00\x8b\xfa\x83\xe7\x03\x8b\xdf\x4f\x85"
    "\xdb\x74\x0a\x47\x8a\x19\x88\x1e\x46\x41\x4f\x75\xf7\x8b\xda\x8b"
    "\xfe\x83\xe3\x60\xc1\xe3\x03\x2b\xfb\x8b\x5c\x24\x20\x81\xe3\xff"
    "\x00\x00\x00\xc1\xea\x02\x2b\xfb\x83\xe2\x07\x4f\x83\xc2\x02\x8a"
    "\x1f\x88\x1e\x46\x47\x8b\xda\x4a\x85\xdb\x75\xf3\xeb\x9c\xf6\xc3"
    "\x40\x75\x61\x8a\x11\x41\x88\x54\x24\x20\x8b\x7c\x24\x20\x8a\x11"
    "\x81\xe7\xff\x00\x00\x00\x88\x54\x24\x24\x8b\xd7\x41\xc1\xea\x06"
    "\x8b\xea\x4a\x85\xed\x74\x0c\x8d\x6a\x01\x8a\x11\x88\x16\x46\x41"
    "\x4d\x75\xf7\x83\xe7\x3f\x8b\xd6\xc1\xe7\x08\x2b\xd7\x8b\x7c\x24"
    "\x24\x81\xe7\xff\x00\x00\x00\x83\xe3\x3f\x2b\xd7\x4a\x83\xc3\x03"
    "\x8b\xfb\x8a\x1a\x88\x1e\x46\x42\x8b\xdf\x4f\x85\xdb\x75\xf3\xe9"
    "\x36\xff\xff\xff\xf6\xc3\x20\x0f\x85\x81\x00\x00\x00\x8a\x19\x8a"
    "\x51\x01\x8b\x7c\x24\x10\x41\x41\x88\x54\x24\x24\x81\xe7\xff\x00"
    "\x00\x00\x8a\x11\x41\x88\x54\x24\x18\x8b\xd7\x83\xe2\x03\x8b\xea"
    "\x4a\x85\xed\x74\x0c\x8d\x6a\x01\x8a\x11\x88\x16\x46\x41\x4d\x75"
    "\xf7\x33\xd2\x8a\xf3\x89\x54\x24\x14\x8b\xd6\x8b\x5c\x24\x14\x2b"
    "\xd3\x8b\xdf\x83\xe3\x10\x83\xe7\x0c\xc1\xe3\x0c\x2b\xd3\x8b\x5c"
    "\x24\x24\x81\xe3\xff\x00\x00\x00\x2b\xd3\x8b\x5c\x24\x18\x4a\xc1"
    "\xe7\x06\x81\xe3\xff\x00\x00\x00\x8d\x7c\x1f\x04\x8a\x1a\x88\x1e"
    "\x46\x42\x8b\xdf\x4f\x85\xdb\x75\xf3\xe9\xac\xfe\xff\xff\x8a\xd3"
    "\x83\xe2\x1f\x8d\x14\x95\x04\x00\x00\x00\x83\xfa\x70\x77\x1a\x8b"
    "\xfa\x4a\x85\xff\x0f\x84\x90\xfe\xff\xff\x42\x8a\x19\x88\x1e\x46"
    "\x41\x4a\x75\xf7\xe9\x81\xfe\xff\xff\x83\xe3\x03\x8b\xd3\x4b\x85"
    "\xd2\x74\x0c\x8d\x53\x01\x8a\x19\x88\x1e\x46\x41\x4a\x75\xf7\x5f"
    "\x5e\x5d\x5b\x83\xc4\x0c\xc2\x0c\x00";
int (* __stdcall undk2)(unsigned char *out, unsigned char *in, int unused) = NULL;



// anti DEP limitation! if you apply VirtualAlloc on a static char
// it will cover also the rest of the page included other variables!
void *undk2_alloc(u8 *dump, int dumpsz) {
    int     pagesz;
    void    *ret;

    pagesz = (dumpsz + 4095) & (~4095); // useful for pages? mah

#ifdef WIN32
    ret = VirtualAlloc(
        NULL,
        pagesz,
        MEM_COMMIT | MEM_RESERVE,
        PAGE_EXECUTE_READWRITE);    // write for memcpy
#else
    ret = malloc(pagesz);
    mprotect(
        ret,
        pagesz,
        PROT_EXEC | PROT_WRITE);    // write for memcpy
#endif
    memcpy(ret, dump, dumpsz);
    return(ret);
}



void undk2_init(void) {
    if(undk2) return;
    undk2 = undk2_alloc(undk2_dump, sizeof(undk2_dump));
}