This is likely because the compiler isn't finding a definition of your CPU
class when it goes to compile the execute functions of the instructions.
In the case of the simple cpu, the cpu class itself is used as the context
to pull register values and the like out of, so you're probably looking at
something similar. I don't know the specifics of that mechanism, but I
think there's some python code which works through scons to generate a
header which gathers up all the appropriate includes and definitions for
all the cpu models you're compiling in. My guess is that that isn't set up
right for your new model.
Gabe
On Thu, 27 Dec 2007, jockie lee wrote:
i'm trying to create my own CPU model, however I keep on running on the
following error repeatedly
build/ALPHA_SE/arch/alpha/mycpu_exec.cc:5693: error: invalid use of
undefined type 'struct MyCPU'
build/ALPHA_SE/cpu/static_inst.hh:56: error: forward declaration of 'struct
MyCPU'
build/ALPHA_SE/arch/alpha/mycpu_exec.cc:5701: error: invalid use of
undefined type 'struct MyCPU'
build/ALPHA_SE/cpu/static_inst.hh:56: error: forward declaration of 'struct
MyCPU'
...
any ideas what could be causing this? i just followed the instructions in
the website...
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