void trap_memcpyha_safe(TrapContext *ctx, uaecptr dst, const uae_u8 *src, int size)
{
if (size <= 0)
return;
if (trap_is_indirect()) {
trap_put_bytes(ctx, src, dst, size);
} else {
memcpyha_safe(dst, src, size);
}
}
static int handleread (TrapContext *ctx, struct priv_s2devstruct *pdev, uaecptr request, uae_u8 *d, int len, int cmd)
{
uae_u8 flags = get_byte (request + 30);
uaecptr data = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4);
uaecptr srcaddr = request + 32 + 4 + 4;
uaecptr dstaddr = request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES;
uae_u16 type = (d[2 * ADDR_SIZE] << 8) | d[2 * ADDR_SIZE + 1];
uae_u32 v = 0;
uaecptr data2;
memcpyha_safe (pdev->tempbuf, d, len);
memcpyha_safe (dstaddr, d, ADDR_SIZE);
memcpyha_safe (srcaddr, d + ADDR_SIZE, ADDR_SIZE);
put_long (request + 32 + 4, type);
if (pdev->tracks[type]) {
pdev->bytesreceived += len;
pdev->packetsreceived++;
}
flags &= ~(SANA2IOF_BCAST | SANA2IOF_MCAST);
if (isbroadcast (d))
flags |= SANA2IOF_BCAST;
else if (ismulticast (d))
flags |= SANA2IOF_MCAST;
put_byte (request + 30, flags);
data2 = pdev->tempbuf;
if (!(flags & SANA2IOF_RAW)) {
len -= ETH_HEADER_SIZE;
data2 += ETH_HEADER_SIZE;
}
put_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2, len);
if (pdev->packetfilter && cmd == CMD_READ && packetfilter (ctx, pdev->packetfilter, request, data2) == 0)
return 0;
if (!copytobuff (ctx, data2, data, len, pdev->copytobuff)) {
put_long (request + 32, S2WERR_BUFF_ERROR);
put_byte (request + 31, S2ERR_NO_RESOURCES);
}
return 1;
}