int sock_recv_init (sock_type *s, void *space, unsigned len)
{
recv_buf *p = (recv_buf*) space;
recv_data *r = (recv_data*) s->udp.rx_data;
int i;
WATT_ASSERT ((DWORD)len <= USHRT_MAX);
memset (r, 0, s->udp.max_rx_data); /* clear Rx-buffer */
memset (p, 0, len); /* clear data area */
s->udp.protoHandler = (ProtoHandler) sock_recvdaemon;
r->recv_sig = RECV_USED;
r->recv_bufs = (BYTE*) p;
r->recv_bufnum = (WORD) (len / sizeof(recv_buf));
if (s->udp.ip_type == UDP_PROTO)
for (i = 0; i < r->recv_bufnum; i++, p++)
p->buf_sig = RECV_UNUSED;
return (0);
}
static int setup_rmode_receiver (void)
{
WORD rx_seg, rx_ofs;
WORD asmpkt_size_chk;
int head_size = RX_ELEMENT_HEAD_SIZE;
WATT_ASSERT (rm_base);
WATT_ASSERT ((head_size % 4) == 0);
rx_seg = _pkt_inf->rm_seg;
rx_ofs = PktReceiver;
#if 0 /* test */
printf ("PktReceiver @ %04X:%04X, ", rx_seg, PktReceiver);
printf ("_asmpkt_inf @ %04X:%04X\n", rx_seg, (int)sizeof(real_stub_array));
#endif
*(WORD*)&real_stub_array[asmpkt_inf+0] = sizeof(real_stub_array);
*(WORD*)&real_stub_array[asmpkt_inf+2] = rx_seg;
asmpkt_size_chk = *(WORD*) (real_stub_array + size_chk);
if (asmpkt_size_chk != sizeof(PKT_INFO))
{
TCP_CONSOLE_MSG (0, ("%s (%u): Development error:\n"
" sizeof(pkt_info) = %ld in pcpkt.h\n"
" sizeof(pkt_info) = %u in asmpkt.nas, (diff %ld)\n",
__FILE__, __LINE__,
(long)sizeof(PKT_INFO), asmpkt_size_chk,
(long)(sizeof(PKT_INFO) - asmpkt_size_chk)));
return (-1);
}
if (*(WORD*)&real_stub_array[PktReceiver] != 0xA80F || /* push gs */
*(WORD*)&real_stub_array[PktReceiver+2] != 0xA00F) /* push fs */
{
TCP_CONSOLE_MSG (0, ("%s (%u): Development error:\n"
" PktReceiver misaligned\n", __FILE__, __LINE__));
return (-1);
}
if (!has_rdtsc || !use_rdtsc)
{
DWORD patch_it = (*(WORD*) &real_stub_array[patch_nop]) +
(DWORD) &real_stub_array;
TCP_CONSOLE_MSG (4, ("patch_it (%04X): %02X,%02X,%02X\n",
*(WORD*)&real_stub_array[patch_nop],
((BYTE*)patch_it)[0],
((BYTE*)patch_it)[1],
((BYTE*)patch_it)[2]));
((BYTE*)patch_it) [0] = 0x90; /* NOP */
((BYTE*)patch_it) [1] = 0x90;
((BYTE*)patch_it) [2] = 0x90;
}
#if (DOSX & (PHARLAP|POWERPAK|X32VM))
WriteRealMem (rm_base, &real_stub_array, sizeof(real_stub_array));
#elif (DOSX & DJGPP)
dosmemput (&real_stub_array, sizeof(real_stub_array), rm_base);
#elif (DOSX & DOS4GW) || (DOSX == 0)
memcpy ((void*)rm_base, &real_stub_array, sizeof(real_stub_array));
#else
#error Help me!
#endif
return (0);
}
