Matlab (.m) to VHDL

Hello,

I have seen this question many times in the newsgroups but I did not
see a clear answer.
I have to perform various operations on arrays of data (such as
multiplication, addition, finding mean, etc.). I have code written in
Matlab and would like to translate it to vhdl. I understand that such
subroutines as imagesc, imwrite, etc. might not be possible to
translate to vhdl and will need to be written (or similar functions
might be already implemented in vhdl). Is there anyway of directly
translating Matlab code directly to vhdl? Can this be done using
Simulink (Xilinx System Generator)? I don't have System Generator at
home and Xilinx doesn't seem to have evaluation version (asking for
Product Serial Number). Or maybe my question should be: can this be
done in Simulink to start with?
I have Xilinx FPGA/ISE. And if this can not be done using System
Generator, is there anything else that can be used?

Please let me know if my requirements are not very clear.

Thanks,
Vitaliy