This change modifies the way prefetches work. They are now like normal loads
that don't writeback a register. Previously prefetches were supposed to call
prefetch() on the exection context, so they executed with execute() methods
instead of initiateAcc() completeAcc(). The prefetch() methods for all the CPUs
are blank, meaning that they get executed, but don't actually do anything.
On Alpha dead cache copy code was removed and prefetches are now normal ops.
They count as executed operations, but still don't do anything and IsMemRef is
not longer set on them.
On ARM IsDataPrefetch or IsInstructionPreftech is now set on all prefetch
instructions. The timing simple CPU doesn't try to do anything special for
prefetches now and they execute with the normal memory code path.
This provides a common initial status for all threads independent
of CPU model (unlike the prior situation where CPUs initialized
threads to inconsistent states).
This mostly matters for SE mode; in FS mode, ISA-specific startupCPU()
methods generally handle boot-time initialization of thread contexts
(since the right thing to do is ISA-dependent).
configs/example/fs.py:
configs/example/se.py:
src/cpu/simple/base.cc:
src/cpu/simple/base.hh:
src/cpu/simple/timing.cc:
src/cpu/simple_thread.cc:
src/cpu/simple_thread.hh:
src/cpu/thread_state.cc:
src/cpu/thread_state.hh:
tests/configs/o3-timing-mp.py:
tests/configs/o3-timing.py:
tests/configs/simple-atomic-mp.py:
tests/configs/simple-atomic.py:
tests/configs/simple-timing-mp.py:
tests/configs/simple-timing.py:
tests/configs/tsunami-simple-atomic-dual.py:
tests/configs/tsunami-simple-atomic.py:
tests/configs/tsunami-simple-timing-dual.py:
tests/configs/tsunami-simple-timing.py:
No need for mem parameter any more.
src/cpu/checker/cpu.cc:
Use new constructor for simple thread (no more MemObject parameter).
src/cpu/checker/cpu.hh:
Remove MemObject parameter.
src/cpu/memtest/memtest.hh:
Ports now take in their MemObject owner.
src/cpu/o3/alpha/cpu_builder.cc:
Remove mem parameter.
src/cpu/o3/alpha/cpu_impl.hh:
Remove memory parameter and clean up handling of TranslatingPort.
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/mips/cpu_builder.cc:
src/cpu/o3/mips/cpu_impl.hh:
src/cpu/o3/params.hh:
src/cpu/o3/thread_state.hh:
src/cpu/ozone/cpu.hh:
src/cpu/ozone/cpu_builder.cc:
src/cpu/ozone/cpu_impl.hh:
src/cpu/ozone/front_end.hh:
src/cpu/ozone/front_end_impl.hh:
src/cpu/ozone/lw_lsq.hh:
src/cpu/ozone/lw_lsq_impl.hh:
src/cpu/ozone/simple_params.hh:
src/cpu/ozone/thread_state.hh:
src/cpu/simple/atomic.cc:
Remove memory parameter.
--HG--
extra : convert_revision : 43cb44a33b31320d44b69679dcf646c0380d07d3
src/cpu/SConscript:
Split off instantiations into separate CC files. This makes it easier to split them per CPU model.
src/cpu/base_dyn_inst_impl.hh:
Move instantations out of impl.hh file and into a cc file.
src/cpu/checker/cpu_impl.hh:
Move instantiations over to .cc files inside each CPU's directory. Makes it easier to only use what's actually included.
src/cpu/o3/bpred_unit.cc:
Pull Ozone instantiations out of this .cc file; put them into the ozone's CC file.
src/cpu/o3/checker_builder.cc:
Instantiate Checker for O3 CPU.
src/cpu/ozone/checker_builder.cc:
Instantiate Checker for Ozone CPU.
--HG--
rename : src/cpu/base_dyn_inst.cc => src/cpu/base_dyn_inst_impl.hh
rename : src/cpu/checker/cpu.cc => src/cpu/checker/cpu_impl.hh
rename : src/cpu/checker/o3_builder.cc => src/cpu/o3/checker_builder.cc
rename : src/cpu/checker/ozone_builder.cc => src/cpu/ozone/checker_builder.cc
extra : convert_revision : 4e5f928b165379c06d31071c544ea46cf0b8fa71
src/cpu/checker/cpu.cc:
Add in comment.
src/cpu/cpuevent.hh:
Fix up comment.
src/cpu/o3/bpred_unit.cc:
Comment out Ozone instantiations.
src/cpu/o3/dep_graph.hh:
Include destructor.
--HG--
extra : convert_revision : 549454ed11bc2fa49a0627f7fb8f96d00a9be303
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
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
Following with the previous check-in, ExecContext now refers only to the interface provided to the ISA in order to access CPU state. ThreadContext refers to the interface provided to all objects outside the CPU in order to access thread state. SimpleThread provides all thread state and the interface to access it, and is suitable for simple execution models such as the SimpleCPU.
src/SConscript:
Include thread state file.
src/arch/alpha/ev5.cc:
src/cpu/checker/cpu.cc:
src/cpu/checker/cpu.hh:
src/cpu/checker/thread_context.hh:
src/cpu/memtest/memtest.cc:
src/cpu/memtest/memtest.hh:
src/cpu/o3/cpu.cc:
src/cpu/ozone/cpu_impl.hh:
src/cpu/simple/atomic.cc:
src/cpu/simple/base.cc:
src/cpu/simple/base.hh:
src/cpu/simple/timing.cc:
Rename CPUExecContext to SimpleThread.
src/cpu/base_dyn_inst.hh:
Make thread member variables protected..
src/cpu/o3/alpha_cpu.hh:
src/cpu/o3/cpu.hh:
Make various members of ThreadState protected.
src/cpu/o3/alpha_cpu_impl.hh:
Push generation of TranslatingPort into the CPU itself.
Make various members of ThreadState protected.
src/cpu/o3/thread_state.hh:
Pull a lot of common code into the base ThreadState class.
src/cpu/ozone/thread_state.hh:
Rename CPUExecContext to SimpleThread, move a lot of common code into base ThreadState class.
src/cpu/thread_state.hh:
Push a lot of common code into base ThreadState class. This goes along with renaming CPUExecContext to SimpleThread, and making it derive from ThreadState.
src/cpu/simple_thread.cc:
Rename CPUExecContext to SimpleThread, make it derive from ThreadState. This helps push a lot of common code/state into a single class that can be used by all CPUs.
src/cpu/simple_thread.hh:
Rename CPUExecContext to SimpleThread, make it derive from ThreadState.
src/kern/system_events.cc:
Rename cpu_exec_context to thread_context.
src/sim/process.hh:
Remove unused forward declaration.
--HG--
rename : src/cpu/cpu_exec_context.cc => src/cpu/simple_thread.cc
rename : src/cpu/cpu_exec_context.hh => src/cpu/simple_thread.hh
extra : convert_revision : 2ed617aa80b64016cb9270f75352607cca032733
src/cpu/o3/fetch_impl.hh:
Give the checker a pointer to the icachePort.
src/cpu/o3/lsq_unit_impl.hh:
Give the checker a pointer to the dcachePort.
src/mem/request.hh:
Allow checking for the scResult being valid prior to accessing it.
--HG--
extra : convert_revision : ced4180588d242111ecba4a11586823badd6cf15
