Could you please tell me the specific related locations in the source code,
such as the block “decode OPCODE default Unknown::unknown(){}” in
src\arch\alpha\isa\decoder.isa? Because I am not familiar with the structure
of the program. Thank you.KJ On Wed, Mar 9, 2011 at 11:01 PM, Gabe Black <[email protected]> wrote: > The file you'd modify is src/arch/alpha/isa/decoder.isa. The syntax for > this file is found on the wiki here: > > http://www.m5sim.org/wiki/index.php/The_M5_ISA_description_language > > When adding a blob for your instruction, you'll probably want to put the > bits from the actual source and destination registers into intermediate > arrays so that their components can be manipulated individually. Then, once > you've computed the output, you'd take the value from the intermediate > result array and move it into the destination register. The way the parser > identifies sources and destinations is that anything to the left of an > equals sign is considered a destination, and anything else is considered a > source. Its easiest to make sure the parser understands what your doing even > with complex operations like this by using intermediate variables and > reading and writing what the parser sees as operands with nice, clean > assignments. This also means you won't really be able to use, for instance, > memcpy since the destination will be a function argument and look like a > source even though it's being written to. > > Gabe > > > On 03/09/11 19:49, K J wrote: > > Hi All, > > Could you please tell me if I want to add a special instruction into the > Alpha ISA, which files and functions I need to modify? The M5 version is > “m5-stable-f299139501f7”. The instruction like an addition of two vectors: > VVADD Va, Vb, Vc > For (i=0; i<128, i++) { > Vc[i]=Va[i]+Vb[i]; > } > Thank you. > > KJ > > > _______________________________________________ > m5-users mailing > [email protected]http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > > > > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users >
_______________________________________________ m5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
