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If the user sets the environment variable M5_OVERRIDE_PY_SOURCE to
True, then imports that would normally find python code compiled into
the executable will instead first check in the absolute location where
the code was found during the build of the executable. This only
works for files in the src (or extras) directories, not automatically
generated files.
This is a developer feature!
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This tidbit was pulled from a larger patch for Tim's sake, so
the comment reflects functions that haven't been exported yet.
I hope to commit them soon so it didn't seem worth cleaning up.
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fault.
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This bug was introduced with the recent rework of SC
failure handling in cset f97b62be544f.
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On Nate's advice, overload 'char' as well as 'signed char'
and 'unsigned char'.
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(without requiring a leading underscore)
Also a little cleanup on type names in SimObject.py.
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There used to be a reason to have StartupCallback
be a separate object, but not any more. Now
it's just confusing.
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Move some static checkpoint stuff into the
Checkpoint object namespace.
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Somehow we now need to explicitly specialize on
'signed char' and not just 'char' to catch cases
like int8_t
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m5 doesnt do stats specific to binary and this resource request stat is probably only
useful for people who really know the ins/outs of the model anyway
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the nextPC was getting sent to the branch predictor not the current PC, so
the RAS was returning the wrong PC and mispredicting everything.
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replace priority queue with vector of lists(1 list per stage) and place inside a class
so that we have more control of when an instruction uses a particular schedule entry
...
also, this is the 1st step toward making the InOrderCPU fully parameterizable. See the
wiki for details on this process
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remove the annotation 'virtual' from function declaration that isnt being derived from
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this applies to multithreading models which would like to squash a thread on memory stall
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- use InOrderBPred instead of Resource for DPRINTFs
- account for DELAY SLOT in updating RAS and in squashing
- don't let squashed instructions update the predictor
- the BTB needs to use the ASID not the TID to work for multithreaded programs
- add stats for BTB hits
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also, remove inst-req stats as default.good for debugging
but in terms of pure processor stats they aren't useful
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remove stall only when necessary
add debugging printfs
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use nextCycle to calculate ticks after addition
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Thanks to Joe Gross for pointing this out (again?).
Apologies to anyone who pointed it out earlier and
we didn't listen.
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the system pointers match in Full System mode.
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Requires new "SCUpgradeReq" message that marks upgrades
for store conditionals, so downstream caches can fail
these when they run into invalidations.
See http://www.m5sim.org/flyspray/task/197
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Only set the dirty bit when we actually write to a block
(not if we thought we might but didn't, as in a failed
SC or CAS). This requires makeing sure the dirty bit
stays set when we get an exclusive (writable) copy
in a cache-to-cache transfer from another owner, which
n turn requires copying the mem-inhibit flag from
timing-mode requests to their associated responses.
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One big difference is that PrioHeap puts the smallest element at the
top of the heap, whereas stl puts the largest element on top, so I
changed all comparisons so they did the right thing.
Some usage of PrioHeap was simply changed to a std::vector, using sort
at the right time, other usage had me just use the various heap functions
in the stl.
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add a couple of helper functions to base for deleteing all pointers in
a container and outputting containers to a stream
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This was somewhat tricky because the RefCnt API was somewhat odd. The
biggest confusion was that the the RefCnt object's constructor that
took a TYPE& cloned the object. I created an explicit virtual clone()
function for things that took advantage of this version of the
constructor. I was conservative and used clone() when I was in doubt
of whether or not it was necessary. I still think that there are
probably too many instances of clone(), but hopefully not too many.
I converted several instances of const MsgPtr & to a simple MsgPtr.
If the function wants to avoid the overhead of creating another
reference, then it should just use a regular pointer instead of a ref
counting ptr.
There were a couple of instances where refcounted objects were created
on the stack. This seems pretty dangerous since if you ever
accidentally make a reference to that object with a ref counting
pointer, bad things are bound to happen.
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of the Initialized flag would break, set Initialized for events upon
unserialization.
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and force it to True for builds that imply Ruby protocols
(else unexpected things happen when testing these builds
with RUBY=False).
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Found several more stale includes and forward decls.
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rather than a scary thing that might not work.
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Expand the help text on the --remote-gdb-port option so
people know you can use it to disable remote gdb without
reading the source code, and thus don't waste any time
trying to add a separate option to do that.
Clean up some gdb-related cruft I found while looking
for where one would add a gdb disable option, before
I found the comment that told me that I didn't need
to do that.
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