The Xc95108 is well eol , I'm amazed you can even get a new one to program from an authorised distributor.
https://www.xilinx.com/support/documentation/data_sheets/DS066.pdfThis device has a JTAG port, so your first task is to find out does your board have a JTAG port, is it connected to the device, and what connector it has.
If all the above is in place, then you can find a JTAG programmer that also reads the data back,
That is assuming the security fuse is not programmed, in which case the devise is un redable,
There is one big question,
Under the millennium copyright law, if you do not own the IP of this device, then you are breaking the law doing so, and also the licence with Xilinx using their tools ,
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