This change is a low level and pervasive reorganization of how PCs are managed
in M5. Back when Alpha was the only ISA, there were only 2 PCs to worry about,
the PC and the NPC, and the lsb of the PC signaled whether or not you were in
PAL mode. As other ISAs were added, we had to add an NNPC, micro PC and next
micropc, x86 and ARM introduced variable length instruction sets, and ARM
started to keep track of mode bits in the PC. Each CPU model handled PCs in
its own custom way that needed to be updated individually to handle the new
dimensions of variability, or, in the case of ARMs mode-bit-in-the-pc hack,
the complexity could be hidden in the ISA at the ISA implementation's expense.
Areas like the branch predictor hadn't been updated to handle branch delay
slots or micropcs, and it turns out that had introduced a significant (10s of
percent) performance bug in SPARC and to a lesser extend MIPS. Rather than
perpetuate the problem by reworking O3 again to handle the PC features needed
by x86, this change was introduced to rework PC handling in a more modular,
transparent, and hopefully efficient way.
PC type:
Rather than having the superset of all possible elements of PC state declared
in each of the CPU models, each ISA defines its own PCState type which has
exactly the elements it needs. A cross product of canned PCState classes are
defined in the new "generic" ISA directory for ISAs with/without delay slots
and microcode. These are either typedef-ed or subclassed by each ISA. To read
or write this structure through a *Context, you use the new pcState() accessor
which reads or writes depending on whether it has an argument. If you just
want the address of the current or next instruction or the current micro PC,
you can get those through read-only accessors on either the PCState type or
the *Contexts. These are instAddr(), nextInstAddr(), and microPC(). Note the
move away from readPC. That name is ambiguous since it's not clear whether or
not it should be the actual address to fetch from, or if it should have extra
bits in it like the PAL mode bit. Each class is free to define its own
functions to get at whatever values it needs however it needs to to be used in
ISA specific code. Eventually Alpha's PAL mode bit could be moved out of the
PC and into a separate field like ARM.
These types can be reset to a particular pc (where npc = pc +
sizeof(MachInst), nnpc = npc + sizeof(MachInst), upc = 0, nupc = 1 as
appropriate), printed, serialized, and compared. There is a branching()
function which encapsulates code in the CPU models that checked if an
instruction branched or not. Exactly what that means in the context of branch
delay slots which can skip an instruction when not taken is ambiguous, and
ideally this function and its uses can be eliminated. PCStates also generally
know how to advance themselves in various ways depending on if they point at
an instruction, a microop, or the last microop of a macroop. More on that
later.
Ideally, accessing all the PCs at once when setting them will improve
performance of M5 even though more data needs to be moved around. This is
because often all the PCs need to be manipulated together, and by getting them
all at once you avoid multiple function calls. Also, the PCs of a particular
thread will have spatial locality in the cache. Previously they were grouped
by element in arrays which spread out accesses.
Advancing the PC:
The PCs were previously managed entirely by the CPU which had to know about PC
semantics, try to figure out which dimension to increment the PC in, what to
set NPC/NNPC, etc. These decisions are best left to the ISA in conjunction
with the PC type itself. Because most of the information about how to
increment the PC (mainly what type of instruction it refers to) is contained
in the instruction object, a new advancePC virtual function was added to the
StaticInst class. Subclasses provide an implementation that moves around the
right element of the PC with a minimal amount of decision making. In ISAs like
Alpha, the instructions always simply assign NPC to PC without having to worry
about micropcs, nnpcs, etc. The added cost of a virtual function call should
be outweighed by not having to figure out as much about what to do with the
PCs and mucking around with the extra elements.
One drawback of making the StaticInsts advance the PC is that you have to
actually have one to advance the PC. This would, superficially, seem to
require decoding an instruction before fetch could advance. This is, as far as
I can tell, realistic. fetch would advance through memory addresses, not PCs,
perhaps predicting new memory addresses using existing ones. More
sophisticated decisions about control flow would be made later on, after the
instruction was decoded, and handed back to fetch. If branching needs to
happen, some amount of decoding needs to happen to see that it's a branch,
what the target is, etc. This could get a little more complicated if that gets
done by the predecoder, but I'm choosing to ignore that for now.
Variable length instructions:
To handle variable length instructions in x86 and ARM, the predecoder now
takes in the current PC by reference to the getExtMachInst function. It can
modify the PC however it needs to (by setting NPC to be the PC + instruction
length, for instance). This could be improved since the CPU doesn't know if
the PC was modified and always has to write it back.
ISA parser:
To support the new API, all PC related operand types were removed from the
parser and replaced with a PCState type. There are two warts on this
implementation. First, as with all the other operand types, the PCState still
has to have a valid operand type even though it doesn't use it. Second, using
syntax like PCS.npc(target) doesn't work for two reasons, this looks like the
syntax for operand type overriding, and the parser can't figure out if you're
reading or writing. Instructions that use the PCS operand (which I've
consistently called it) need to first read it into a local variable,
manipulate it, and then write it back out.
Return address stack:
The return address stack needed a little extra help because, in the presence
of branch delay slots, it has to merge together elements of the return PC and
the call PC. To handle that, a buildRetPC utility function was added. There
are basically only two versions in all the ISAs, but it didn't seem short
enough to put into the generic ISA directory. Also, the branch predictor code
in O3 and InOrder were adjusted so that they always store the PC of the actual
call instruction in the RAS, not the next PC. If the call instruction is a
microop, the next PC refers to the next microop in the same macroop which is
probably not desirable. The buildRetPC function advances the PC intelligently
to the next macroop (in an ISA specific way) so that that case works.
Change in stats:
There were no change in stats except in MIPS and SPARC in the O3 model. MIPS
runs in about 9% fewer ticks. SPARC runs with 30%-50% fewer ticks, which could
likely be improved further by setting call/return instruction flags and taking
advantage of the RAS.
TODO:
Add != operators to the PCState classes, defined trivially to be !(a==b).
Smooth out places where PCs are split apart, passed around, and put back
together later. I think this might happen in SPARC's fault code. Add ISA
specific constructors that allow setting PC elements without calling a bunch
of accessors. Try to eliminate the need for the branching() function. Factor
out Alpha's PAL mode pc bit into a separate flag field, and eliminate places
where it's blindly masked out or tested in the PC.
This code is no longer needed because of the preceeding change which adds a
StaticInstPtr parameter to the fault's invoke method, obviating the only use
for this pair of functions.
Also move the "Fault" reference counted pointer type into a separate file,
sim/fault.hh. It would be better to name this less similarly to sim/faults.hh
to reduce confusion, but fault.hh matches the name of the type. We could change
Fault to FaultPtr to match other pointer types, and then changing the name of
the file would make more sense.
When enabled, faulting instructions appear in the trace twice
(once when they fault and again when they're re-executed).
This flag is set by the Exec compound flag for backwards compatibility.
Fix the logic in the LSQ that determines if there are any stores to
write back. In the commit stage, check for thread specific writebacks
instead of just any writeback.
A whole bunch of stuff has been converted to use the new params stuff, but
the CPU wasn't one of them. While we're at it, make some things a bit
more stylish. Most of the work was done by Gabe, I just cleaned stuff up
a bit more at the end.
src/cpu/o3/alpha/cpu_impl.hh:
Pass ISA-specific O3 CPU to FullO3CPU as a constructor parameter instead of using setCPU functions.
--HG--
extra : convert_revision : 74f4b1f5fb6f95a56081f367cce7ff44acb5688a
The removed ones were unnecessary. The commented out ones could be useful in the future, should this problem get fixed. See flyspray task #243.
src/cpu/o3/commit_impl.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/lsq_impl.hh:
src/cpu/o3/lsq_unit_impl.hh:
src/cpu/o3/rename_impl.hh:
src/cpu/o3/rob_impl.hh:
Remove/comment out DPRINTFs that were causing a segfault.
--HG--
extra : convert_revision : b5aeda1c6300dfde5e0a3e9b8c4c5f6fa00b9862
into zamp.eecs.umich.edu:/z/ktlim2/clean/tmp/clean2
src/cpu/base_dyn_inst.hh:
Hand merge. Line is no longer needed because it's handled in the ISA.
--HG--
extra : convert_revision : 0be4067aa38759a5631c6940f0167d48fde2b680
1. Move interrupt handling to a separate function to clean up main commit() function a bit. Also gate the function call off properly based on whether or not there are outstanding interrupts, and the system is not in PAL mode.
2. Better handling of updating instruction's status bits. Instructions are not marked "atCommit" until other stages view it (pushed off to IEW/IQ), and they have been properly handled (faults).
3. Don't consider the ROB "empty" for the purpose of other stages until the ROB is empty, all stores have written back, and there was no store commits this cycle. The last is necessary in case a store committed, in which case it would look like all stores have written back but in actuality have not.
src/cpu/o3/commit.hh:
Slightly modify how interrupts are handled. Also include some extra bools to keep track of state properly.
src/cpu/o3/commit_impl.hh:
Slightly modify how interrupts are handled. Also include some extra bools to keep track of state.
General correctness updates, most specifically for when commit broadcasts to other stages that the ROB is empty.
--HG--
extra : convert_revision : 682ec6ccf4ee6ed0c8a030ceaba1c90a3619d102
into zower.eecs.umich.edu:/eecshome/m5/newmem
src/arch/sparc/isa/formats/mem/util.isa:
src/arch/sparc/isa_traits.hh:
src/arch/sparc/system.cc:
Hand Merge
--HG--
extra : convert_revision : d5e0c97caebb616493e2f642e915969d7028109c
src/cpu/o3/commit_impl.hh:
Oops, changed the logic a little bit. Fix it up to how it used to be.
--HG--
extra : convert_revision : df7f69b0997207b611374c3c92880f3a405e88be
Also don't call (*activeThreads).end() over and over. Just
call activeThreads->end() once and save the result.
Make sure we always check that there are elements in the list
before we grab the first one.
--HG--
extra : convert_revision : d769d8ed52da99532d57a9bbc93e92ddf22b7e58
into zower.eecs.umich.edu:/eecshome/m5/newmem
src/cpu/o3/commit_impl.hh:
Hand Merge
--HG--
extra : convert_revision : 6984db90d5b5ec71c31f1c345f5a77eed540059e
src/arch/alpha/interrupts.hh:
No need for this now that the ThreadContext is being used to set these IPRs in interrupts.
Also split up the interrupt checking from the updating of the IPL and interrupt summary.
src/arch/alpha/tlb.cc:
Check the PC for whether or not it's in PAL mode, not the addr.
src/cpu/o3/alpha/cpu.hh:
Split up getting the interrupt from actually processing the interrupt.
src/cpu/o3/alpha/cpu_impl.hh:
Splut up the processing of interrupts.
src/cpu/o3/commit_impl.hh:
Update for ISA-oriented interrupt changes.
src/cpu/o3/fetch_impl.hh:
Fix broken if statement from PcPAL updates, and properly populate the request fields.
Also more debugging output.
src/cpu/ozone/cpu_impl.hh:
Updates for ISA-oriented interrupt stuff.
src/cpu/ozone/front_end_impl.hh:
Populate request fields properly.
src/cpu/simple/base.cc:
Update for interrupt stuff.
--HG--
extra : convert_revision : 9bac3f9ffed4948ee788699b2fa8419bc1ca647c
src/cpu/o3/commit_impl.hh:
Fixes for compile and sampling.
src/cpu/o3/cpu.cc:
Deallocate and activate threads properly. Also hopefully fix being able to use caches while switching over.
src/cpu/o3/cpu.hh:
Fixes for deallocating and activating threads.
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/lsq_unit.hh:
Handle getting back a BadAddress result from the access.
src/cpu/o3/iew_impl.hh:
More debug output.
src/cpu/o3/lsq_unit_impl.hh:
Fixup store conditional handling (still a bit of a hack, but works now).
Also handle getting back a BadAddress result from the access.
src/cpu/o3/thread_context_impl.hh:
Deallocate context now records if the context should be fully removed.
--HG--
extra : convert_revision : 55f81660602d0e25367ce1f5b0b9cfc62abe7bf9
src/arch/alpha/isa_traits.hh:
This got changed to the wrong version by accident.
src/cpu/base.cc:
Fix up progress event to not schedule itself if the interval is set to 0.
src/cpu/base.hh:
Fix up the CPU Progress Event to not print itself if it's set to 0. Also remove stats_reset_inst (something I added to m5 but isn't necessary here).
src/cpu/base_dyn_inst.hh:
src/cpu/checker/cpu.hh:
Remove float variable of instResult; it's always held within the double part now.
src/cpu/checker/cpu_impl.hh:
Use thread and not cpuXC.
src/cpu/o3/alpha/cpu_builder.cc:
src/cpu/o3/checker_builder.cc:
src/cpu/ozone/checker_builder.cc:
src/cpu/ozone/cpu_builder.cc:
src/python/m5/objects/BaseCPU.py:
Remove stats_reset_inst.
src/cpu/o3/commit_impl.hh:
src/cpu/ozone/lw_back_end_impl.hh:
Get TC, not XCProxy.
src/cpu/o3/cpu.cc:
Switch out updates from the version of m5 I have. Also remove serialize code that got added twice.
src/cpu/o3/iew_impl.hh:
src/cpu/o3/lsq_impl.hh:
src/cpu/thread_state.hh:
Remove code that was added twice.
src/cpu/o3/lsq_unit.hh:
Add back in stats that got lost in the merge.
src/cpu/o3/lsq_unit_impl.hh:
Use proper method to get flags. Also wake CPU if we're coming back from a cache miss.
src/cpu/o3/thread_context_impl.hh:
src/cpu/o3/thread_state.hh:
Support profiling.
src/cpu/ozone/cpu.hh:
Update to use proper typename.
src/cpu/ozone/cpu_impl.hh:
src/cpu/ozone/dyn_inst_impl.hh:
Updates for newmem.
src/cpu/ozone/lw_lsq_impl.hh:
Get flags correctly.
src/cpu/ozone/thread_state.hh:
Reorder constructor initialization, use tc.
src/sim/pseudo_inst.cc:
Allow for loading of symbol file. Be sure to use ThreadContext and not ExecContext.
--HG--
extra : convert_revision : c5657f84155807475ab4a1e20d944bb6f0d79d94
src/arch/mips/isa/base.isa:
special case syscall disasembly... maybe give own instruction class?
src/arch/mips/isa/decoder.isa:
add 'IsSerializeAfter' flag for syscall
src/cpu/o3/commit.hh:
Add skidBuffer to commit
src/cpu/o3/commit_impl.hh:
Use skidbuffer in MIPS ISA
src/cpu/o3/fetch_impl.hh:
Print name out when there is a fault
src/cpu/o3/mips/cpu_impl.hh:
change comment
--HG--
extra : convert_revision : d032549e07102bdd50aa09f044fce8de6f0239b5
succesfully but there are some minor quirks to iron out. Who would've known a DELAY SLOT introduces that much complexity?! arrgh!
Anyways, a lot of this stuff had to do with my project at MIPS and me needing to know how I was going to get this working for the MIPS
ISA. So I figured I would try to touch it up and throw it in here (I hate to introduce non-completely working components... )
src/arch/alpha/isa/mem.isa:
spacing
src/arch/mips/faults.cc:
src/arch/mips/faults.hh:
Gabe really authored this
src/arch/mips/isa/decoder.isa:
add StoreConditional Flag to instruction
src/arch/mips/isa/formats/basic.isa:
Steven really did this file
src/arch/mips/isa/formats/branch.isa:
fix bug for uncond/cond control
src/arch/mips/isa/formats/mem.isa:
Adjust O3CPU memory access to use new memory model interface.
src/arch/mips/isa/formats/util.isa:
update LoadStoreBase template
src/arch/mips/isa_traits.cc:
update SERIALIZE partially
src/arch/mips/process.cc:
src/arch/mips/process.hh:
no need for this for NOW. ASID/Virtual addressing handles it
src/arch/mips/regfile/misc_regfile.hh:
add in clear() function and comments for future usage of special misc. regs
src/cpu/base_dyn_inst.hh:
add in nextNPC variable and supporting functions.
add isCondDelaySlot function
Update predTaken and mispredicted functions
src/cpu/base_dyn_inst_impl.hh:
init nextNPC
src/cpu/o3/SConscript:
add MIPS files to compile
src/cpu/o3/alpha/thread_context.hh:
no need for my name on this file
src/cpu/o3/bpred_unit_impl.hh:
Update RAS appropriately for MIPS
src/cpu/o3/comm.hh:
add some extra communication variables to aid in handling the
delay slots
src/cpu/o3/commit.hh:
minor name fix for nextNPC functions.
src/cpu/o3/commit_impl.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/rename_impl.hh:
Fix necessary variables and functions for squashes with delay slots
src/cpu/o3/cpu.cc:
Update function interface ...
adjust removeInstsNotInROB function to recognize delay slots insts
src/cpu/o3/cpu.hh:
update removeInstsNotInROB
src/cpu/o3/decode.hh:
declare necessary variables for handling delay slot
src/cpu/o3/dyn_inst.hh:
Add in MipsDynInst
src/cpu/o3/fetch.hh:
src/cpu/o3/iew.hh:
src/cpu/o3/rename.hh:
declare necessary variables and adjust functions for handling delay slot
src/cpu/o3/inst_queue.hh:
src/cpu/simple/base.cc:
no need for my name here
src/cpu/o3/isa_specific.hh:
add in MIPS files
src/cpu/o3/scoreboard.hh:
dont include alpha specific isa traits!
src/cpu/o3/thread_context.hh:
no need for my name here, i just rearranged where the file goes
src/cpu/static_inst.hh:
add isCondDelaySlot function
src/cpu/o3/mips/cpu.cc:
src/cpu/o3/mips/cpu.hh:
src/cpu/o3/mips/cpu_builder.cc:
src/cpu/o3/mips/cpu_impl.hh:
src/cpu/o3/mips/dyn_inst.cc:
src/cpu/o3/mips/dyn_inst.hh:
src/cpu/o3/mips/dyn_inst_impl.hh:
src/cpu/o3/mips/impl.hh:
src/cpu/o3/mips/params.hh:
src/cpu/o3/mips/thread_context.cc:
src/cpu/o3/mips/thread_context.hh:
MIPS file for O3CPU...mirrors ALPHA definition
--HG--
extra : convert_revision : 9bb199b4085903e49ffd5a4c8ac44d11460d988c
src/cpu/o3/commit_impl.hh:
Always set instruction. This is necessary for serialization as the instruction is also serialized.
src/cpu/o3/cpu.cc:
Change serialization so it matches other CPU's output. Also fix up some indexing.
--HG--
extra : convert_revision : 52f6e183132d177bed6e29dd7cf0c10aed6d8534
src/cpu/SConscript:
Change the error message to be slightly nicer.
src/cpu/o3/commit.hh:
Remove old code.
src/cpu/o3/commit_impl.hh:
Remove old unused code.
--HG--
extra : convert_revision : 48aa430e1f3554007dd5e4f3d9e89b5e4f124390
into zizzer.eecs.umich.edu:/.automount/zooks/y/ksewell/research/m5-sim/newmem-o3
--HG--
extra : convert_revision : 9098d989832e2a5818b80771e3c02170c5c8cd5b
Still, there is a problem with the LSQ and indexing out of range in the buffer.
I havent nailed down the fix yet, but it's coming ...
src/cpu/o3/commit_impl.hh:
add space to DPRINT
src/cpu/o3/cpu.cc:
add newline to DPRINT
src/cpu/o3/rob.hh:
src/cpu/o3/rob_impl.hh:
Each thread needs it's own squashedSeqNum for the case where they are both squashing at the same time and they dont
write over each other's squash number.
--HG--
extra : convert_revision : 2155421a8b5b20e4544eea3d3c53d3e715465fa6
into zizzer.eecs.umich.edu:/.automount/zooks/y/ksewell/research/m5-sim/newmem-o3
--HG--
extra : convert_revision : 90717b492139428e0c48be35a6bda45960c61086
Major thing was to not execute commit if there are no active threads in CPU.
src/cpu/o3/alpha/thread_context.hh:
call deallocate instead of deallocateContext
src/cpu/o3/commit_impl.hh:
dont run commit stage if there are no instructions
src/cpu/o3/cpu.cc:
add deallocate event, deactivateThread function, and edit deallocateContext.
src/cpu/o3/cpu.hh:
add deallocate event and add optional delay to deallocateContext
src/cpu/o3/thread_context.hh:
optional delay for deallocate
src/cpu/o3/thread_context_impl.hh:
edit DPRINTFs to say Thread Context instead of Alpha TC
src/cpu/thread_context.hh:
optional delay
src/sim/syscall_emul.hh:
name stuff
--HG--
extra : convert_revision : f4033e1f66b3043d30ad98dcc70d8b193dea70b6
src/cpu/o3/commit_impl.hh:
Fix to clear drainPending variable on call to resume.
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
Support serializing and unserializing in the O3 CPU.
src/cpu/o3/lsq_impl.hh:
Be sure to say we have no stores to write back if the active thread list is empty.
src/cpu/simple_thread.cc:
src/cpu/simple_thread.hh:
Slightly change how SimpleThread is used to copy from other ThreadContexts.
--HG--
extra : convert_revision : 92a5109b3783a989d5b451036061ef82c56d3121
src/cpu/o3/commit.hh:
src/cpu/o3/commit_impl.hh:
src/cpu/o3/decode.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/iew.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/rename.hh:
src/cpu/o3/rename_impl.hh:
Return a value so that the CPU can instantly return from draining if the pipeline is already drained.
src/cpu/o3/cpu.cc:
Use values returned from pipeline stages so that the CPU can instantly return from draining if the pipeline is already drained.
--HG--
extra : convert_revision : d8ef6b811644ea67c8b40c4719273fa224105811
Edit Test3 for newmem
src/base/traceflags.py:
Add O3CPU flag
src/cpu/base.cc:
for some reason adding a BaseCPU flag doesnt work so just go back to old way...
src/cpu/o3/alpha/cpu_builder.cc:
Determine number threads by workload size instead of solely by parameter.
Default SMT fetch policy to RoundRobin if it's not specified in Config file
src/cpu/o3/commit.hh:
only use nextNPC for !ALPHA
src/cpu/o3/commit_impl.hh:
add FetchTrapPending as condition for commit
src/cpu/o3/cpu.cc:
panic if active threads is more than Impl::MaxThreads
src/cpu/o3/fetch.hh:
src/cpu/o3/inst_queue.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/rob.hh:
src/cpu/o3/rob_impl.hh:
name stuff
src/cpu/o3/fetch_impl.hh:
fatal if try to use SMT branch count, that's unimplemented right now
src/python/m5/config.py:
make it clearer that a parameter is not valid within a configuration class
--HG--
extra : convert_revision : 55069847304e40e257f9225f0dc3894ce6491b34
src/cpu/o3/alpha_dyn_inst_impl.hh:
Consolidate these calls into one.
src/cpu/o3/commit_impl.hh:
Include checker only if it's being used.
src/cpu/o3/fetch_impl.hh:
Do not deallocate request if it's a squashed response that was received.
src/cpu/o3/lsq_unit.hh:
Add in comment.
src/cpu/o3/lsq_unit_impl.hh:
Only include checker if it's being used.
--HG--
extra : convert_revision : aae0bf1e19baae90f1e61d41191548612bbb3be6
First: Rename FullCPU and its variants in the o3 directory to O3CPU to differentiate from the old model, and also to specify it's an out of order model.
Second: Include build options for selecting the Checker to be used. These options make sure if the Checker is being used there is a CPU that supports it also being compiled.
SConstruct:
Add in option USE_CHECKER to allow for not compiling in checker code. The checker is enabled through this option instead of through the CPU_MODELS list. However it's still necessary to treat the Checker like a CPU model, so it is appended onto the CPU_MODELS list if enabled.
configs/test/test.py:
Name change for DetailedCPU to DetailedO3CPU. Also include option for max tick.
src/base/traceflags.py:
Add in O3CPU trace flag.
src/cpu/SConscript:
Rename AlphaFullCPU to AlphaO3CPU.
Only include checker sources if they're necessary. Also add a list of CPUs that support the Checker, and only allow the Checker to be compiled in if one of those CPUs are also being included.
src/cpu/base_dyn_inst.cc:
src/cpu/base_dyn_inst.hh:
Rename typedef to ImplCPU instead of FullCPU, to differentiate from the old FullCPU.
src/cpu/cpu_models.py:
src/cpu/o3/alpha_cpu.cc:
src/cpu/o3/alpha_cpu.hh:
src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_cpu_impl.hh:
Rename AlphaFullCPU to AlphaO3CPU to differentiate from old FullCPU model.
src/cpu/o3/alpha_dyn_inst.hh:
src/cpu/o3/alpha_dyn_inst_impl.hh:
src/cpu/o3/alpha_impl.hh:
src/cpu/o3/alpha_params.hh:
src/cpu/o3/commit.hh:
src/cpu/o3/cpu.hh:
src/cpu/o3/decode.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/iew.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/inst_queue.hh:
src/cpu/o3/lsq.hh:
src/cpu/o3/lsq_impl.hh:
src/cpu/o3/lsq_unit.hh:
src/cpu/o3/regfile.hh:
src/cpu/o3/rename.hh:
src/cpu/o3/rename_impl.hh:
src/cpu/o3/rob.hh:
src/cpu/o3/rob_impl.hh:
src/cpu/o3/thread_state.hh:
src/python/m5/objects/AlphaO3CPU.py:
Rename FullCPU to O3CPU to differentiate from old FullCPU model.
src/cpu/o3/commit_impl.hh:
src/cpu/o3/cpu.cc:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/lsq_unit_impl.hh:
Rename FullCPU to O3CPU to differentiate from old FullCPU model.
Also #ifdef the checker code so it doesn't need to be included if it's not selected.
--HG--
rename : src/cpu/checker/o3_cpu_builder.cc => src/cpu/checker/o3_builder.cc
rename : src/cpu/checker/cpu_builder.cc => src/cpu/checker/ozone_builder.cc
rename : src/python/m5/objects/AlphaFullCPU.py => src/python/m5/objects/AlphaO3CPU.py
extra : convert_revision : 86619baf257b8b7c8955efd447eba56e0d7acd6a
src/cpu/checker/cpu.cc:
src/cpu/checker/cpu.hh:
Updates for checker. Output more informative messages on error. Rename some functions. Add in option to warn (and not exit) on load results being incorrect.
src/cpu/checker/cpu_builder.cc:
src/cpu/checker/o3_cpu_builder.cc:
Add in parameter to warn (and not exit) on load result errors.
src/cpu/o3/commit_impl.hh:
src/cpu/o3/lsq_unit_impl.hh:
Renamed checker functin.
--HG--
extra : convert_revision : d7aa28b8462691d20600f97a7213e2acd91c5665
src/cpu/base_dyn_inst.cc:
src/cpu/base_dyn_inst.hh:
Minor code cleanup by putting several bools into a bitset instead.
src/cpu/o3/commit_impl.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/lsq_unit.hh:
src/cpu/o3/lsq_unit_impl.hh:
src/cpu/o3/rename_impl.hh:
src/cpu/o3/rob_impl.hh:
Changed around some things in BaseDynInst.
--HG--
extra : convert_revision : 1db363d69a863cc8744cc9f9ec542ade8472eb42
src/cpu/base_dyn_inst.cc:
Clean up some code and update.
src/cpu/base_dyn_inst.hh:
Clean up some code and update with more descriptive function names.
src/cpu/o3/alpha_cpu_builder.cc:
src/cpu/o3/alpha_params.hh:
src/cpu/o3/commit.hh:
Remove unused parameters.
src/cpu/o3/commit_impl.hh:
Remove unused parameters, also set squashCounter directly to the counted number of squashes.
src/cpu/o3/fetch_impl.hh:
Update for function name changes.
src/cpu/o3/iew.hh:
src/cpu/o3/iew_impl.hh:
Remove unused parameter, move some code into a function.
--HG--
extra : convert_revision : 45abd77ad43dde2e93c2e53c4738c90ba8352a1d
It still does not yet handle retries.
src/cpu/base_dyn_inst.hh:
Get working in full-system mode and fix some FP bugs.
src/cpu/checker/cpu.cc:
src/cpu/checker/cpu.hh:
src/cpu/checker/thread_context.hh:
src/cpu/o3/alpha_cpu.hh:
src/cpu/o3/alpha_cpu_impl.hh:
src/cpu/o3/commit_impl.hh:
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/thread_state.hh:
src/cpu/ozone/cpu.hh:
src/cpu/ozone/thread_state.hh:
src/cpu/thread_state.hh:
Get working in full system.
src/cpu/checker/o3_cpu_builder.cc:
Checker does not take a MemObject as a simobj parameter.
src/cpu/o3/alpha_dyn_inst.hh:
Fix up float regs.
src/cpu/o3/regfile.hh:
Fix up an fp error, print out more useful output messages.
--HG--
extra : convert_revision : d7cc152a051c697f18b7ee9e14050fbf3ffa5966
src/cpu/base_dyn_inst.cc:
Delete the allocated data in destructor.
src/cpu/base_dyn_inst.hh:
Only copy the addresses if the translation succeeded.
src/cpu/o3/alpha_cpu.hh:
Return actual translating port.
Don't panic on setNextNPC() as it's always called, regardless of the architecture, when the process initializes.
src/cpu/o3/alpha_cpu_impl.hh:
Pass in memobject to the thread state in SE mode.
src/cpu/o3/commit_impl.hh:
Initialize all variables.
src/cpu/o3/decode_impl.hh:
Handle early resolution of branches properly.
src/cpu/o3/fetch.hh:
Switch structure back to requests.
src/cpu/o3/fetch_impl.hh:
Initialize all variables, create/delete requests properly.
src/cpu/o3/lsq_unit.hh:
Include sender state along with the packet. Also include a more generic writeback event that's only used for stores forwarding data to loads.
src/cpu/o3/lsq_unit_impl.hh:
Redo writeback code to support the response path of the memory system.
src/cpu/o3/mem_dep_unit.cc:
src/cpu/o3/mem_dep_unit_impl.hh:
Wrap variables in #ifdefs.
src/cpu/o3/store_set.cc:
Include to get panic() function.
src/cpu/o3/thread_state.hh:
Create with MemObject as well.
src/cpu/thread_state.hh:
Have a translating port in the thread state object.
src/python/m5/objects/AlphaFullCPU.py:
Mem parameter no longer needed.
--HG--
extra : convert_revision : a99381fb25cb183322882ce20935a6f3d1f2b64d
