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2015-07-07sim: Refactor the serialization base classAndreas Sandberg
Objects that are can be serialized are supposed to inherit from the Serializable class. This class is meant to provide a unified API for such objects. However, so far it has mainly been used by SimObjects due to some fundamental design limitations. This changeset redesigns to the serialization interface to make it more generic and hide the underlying checkpoint storage. Specifically: * Add a set of APIs to serialize into a subsection of the current object. Previously, objects that needed this functionality would use ad-hoc solutions using nameOut() and section name generation. In the new world, an object that implements the interface has the methods serializeSection() and unserializeSection() that serialize into a named /subsection/ of the current object. Calling serialize() serializes an object into the current section. * Move the name() method from Serializable to SimObject as it is no longer needed for serialization. The fully qualified section name is generated by the main serialization code on the fly as objects serialize sub-objects. * Add a scoped ScopedCheckpointSection helper class. Some objects need to serialize data structures, that are not deriving from Serializable, into subsections. Previously, this was done using nameOut() and manual section name generation. To simplify this, this changeset introduces a ScopedCheckpointSection() helper class. When this class is instantiated, it adds a new /subsection/ and subsequent serialization calls during the lifetime of this helper class happen inside this section (or a subsection in case of nested sections). * The serialize() call is now const which prevents accidental state manipulation during serialization. Objects that rely on modifying state can use the serializeOld() call instead. The default implementation simply calls serialize(). Note: The old-style calls need to be explicitly called using the serializeOld()/serializeSectionOld() style APIs. These are used by default when serializing SimObjects. * Both the input and output checkpoints now use their own named types. This hides underlying checkpoint implementation from objects that need checkpointing and makes it easier to change the underlying checkpoint storage code.
2014-11-14arm: Fixes based on UBSan and static analysisAndreas Hansson
Another churn to clean up undefined behaviour, mostly ARM, but some parts also touching the generic part of the code base. Most of the fixes are simply ensuring that proper intialisation. One of the more subtle changes is the return type of the sign-extension, which is changed to uint64_t. This is to avoid shifting negative values (undefined behaviour) in the ISA code.
2013-07-18mem: Set the cache line size on a system levelAndreas Hansson
This patch removes the notion of a peer block size and instead sets the cache line size on the system level. Previously the size was set per cache, and communicated through the interconnect. There were plenty checks to ensure that everyone had the same size specified, and these checks are now removed. Another benefit that is not yet harnessed is that the cache line size is now known at construction time, rather than after the port binding. Hence, the block size can be locally stored and does not have to be queried every time it is used. A follow-on patch updates the configuration scripts accordingly.
2012-07-10cpu: added assertions to ensure the correct proxies are usedBrad Beckmann
2012-03-30CPU: Unify initMemProxies across CPUs and simulation modesAndreas Hansson
This patch unifies where initMemProxies is called, in the init() method of each BaseCPU subclass, before TheISA::initCPU is called. Moreover, it also ensures that initMemProxies is called in both full-system and syscall-emulation mode, thus unifying also across the modes. An additional check is added in the ThreadState to ensure that initMemProxies is only called once.
2012-02-24MEM: Make port proxies use references rather than pointersAndreas Hansson
This patch is adding a clearer design intent to all objects that would not be complete without a port proxy by making the proxies members rathen than dynamically allocated. In essence, if NULL would not be a valid value for the proxy, then we avoid using a pointer to make this clear. The same approach is used for the methods using these proxies, such as loadSections, that now use references rather than pointers to better reflect the fact that NULL would not be an acceptable value (in fact the code would break and that is how this patch started out). Overall the concept of "using a reference to express unconditional composition where a NULL pointer is never valid" could be done on a much broader scale throughout the code base, but for now it is only done in the locations affected by the proxies.
2012-02-24CPU: Round-two unifying instr/data CPU ports across modelsAndreas Hansson
This patch continues the unification of how the different CPU models create and share their instruction and data ports. Most importantly, it forces every CPU to have an instruction and a data port, and gives these ports explicit getters in the BaseCPU (getDataPort and getInstPort). The patch helps in simplifying the code, make assumptions more explicit, andfurther ease future patches related to the CPU ports. The biggest changes are in the in-order model (that was not modified in the previous unification patch), which now moves the ports from the CacheUnit to the CPU. It also distinguishes the instruction fetch and load-store unit from the rest of the resources, and avoids the use of indices and casting in favour of keeping track of these two units explicitly (since they are always there anyways). The atomic, timing and O3 model simply return references to their already existing ports.
2012-02-12cpu: add separate stats for insts/ops both globally and per cpu modelAnthony Gutierrez
2012-01-29Implement Ali's review feedback.Gabe Black
Try to decrease indentation, and remove some redundant FullSystem checks.
2012-01-28Merge with the main repo.Gabe Black
--HG-- rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh
2012-01-17MEM: Add port proxies instead of non-structural portsAndreas Hansson
Port proxies are used to replace non-structural ports, and thus enable all ports in the system to correspond to a structural entity. This has the advantage of accessing memory through the normal memory subsystem and thus allowing any constellation of distributed memories, address maps, etc. Most accesses are done through the "system port" that is used for loading binaries, debugging etc. For the entities that belong to the CPU, e.g. threads and thread contexts, they wrap the CPU data port in a port proxy. The following replacements are made: FunctionalPort > PortProxy TranslatingPort > SETranslatingPortProxy VirtualPort > FSTranslatingPortProxy --HG-- rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh
2011-11-18SE/FS: Get rid of FULL_SYSTEM in the CPU directory.Gabe Black
2011-10-31SE/FS: Make the functions available from the TC consistent between SE and FS.Gabe Black
2011-10-30SE/FS: Build the base process class in FS.Gabe Black
2011-10-16SE/FS: Include getMemPort in FS.Gabe Black
2011-10-16SE/FS: Build/expose vport in SE mode.Gabe Black
2011-10-16CPU: Make physPort and getPhysPort available in SE mode.Gabe Black
2010-09-13CPU: Get rid of the now unnecessary getInst/setInst family of functions.Gabe Black
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.
2009-07-08Get rid of the unused get(Data|Inst)Asid and (inst|data)Asid functions.Gabe Black
2009-07-08Registers: Move the PCs out of the ISAs and into the CPUs.Gabe Black
2009-05-26types: add a type for thread IDs and try to use it everywhereNathan Binkert
2009-04-15ThreadState: initialize status to Halted in constructor.Steve Reinhardt
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).
2008-11-04get rid of all instances of readTid() and getThreadNum(). Unify and eliminateLisa Hsu
redundancies with threadId() as their replacement.
2008-11-02make BaseCPU the provider of _cpuId, and cpuId() instead of being scatteredLisa Hsu
across the subclasses. generally make it so that member data is _cpuId and accessor functions are cpuId(). The ID val comes from the python (default -1 if none provided), and if it is -1, the index of cpuList will be given. this has passed util/regress quick and se.py -n4 and fs.py -n4 as well as standard switch.
2008-10-09eventq: convert all usage of events to use the new API.Nathan Binkert
For now, there is still a single global event queue, but this is necessary for making the steps towards a parallelized m5.
2008-07-01Make the cached virtPort have a thread context so it can do everything that ↵Ali Saidi
a newly created one can.
2008-06-28Backed out changeset 94a7bb476fca: caused memory leak.Steve Reinhardt
2008-06-21Generate more useful error messages for unconnected ports.Steve Reinhardt
Force all non-default ports to provide a name and an owner in the constructor.
2008-06-17ThreadState: Ensure that kernelStats is properly initializedNathan Binkert
2007-05-09fix the translating ports so it can add a page on a faultAli Saidi
--HG-- extra : convert_revision : 56f6f2cbf4e92b7f2dd8c9453831fab86d83ef80
2007-03-08stop m5 from leaking like a sieveAli Saidi
don't create a new physPort/virtPort every time activateContext() is called add the ability to tell a memory object to delete it's reference to a port and a method to have a port call deletePortRefs() on the port owner as well as delete it's peer still need to stop calling connectMemoPorts() every time activateContext() is called or we'll overflow the bus id and panic src/cpu/thread_state.cc: if we hav ea (phys|virt)Port don't create a new on, have it delete it's peer and then reuse it src/mem/bus.cc: src/mem/bus.hh: add ability to delete a port by usig a hash_map instead of an array to store port ids add a function to do deleting src/mem/cache/cache.hh: src/mem/cache/cache_impl.hh: src/mem/mem_object.cc: src/mem/mem_object.hh: adda function to delete port references from a memory object src/mem/port.cc: src/mem/port.hh: add a removeConn function that tell the owener to delete any references to the port and then deletes its peer --HG-- extra : convert_revision : 272f0c8f80e1cf1ab1750d8be5a6c9aa110b06a4
2006-11-29Change the connecting of the physPort and virtPort to the memory object ↵Kevin Lim
below the CPU to happen every time activateContext is called. The overhead is probably a little higher than necessary, but allows these connections to properly be made when there are CPUs that are inactive until they are switched in. Right now this introduces a minor memory leak as old physPorts and virtPorts are not deleted when new ones are created. A flyspray task has been created for this issue. It can not be resolved until we determine how the bus will handle giving out ID's to functional ports that may be deleted. src/cpu/o3/cpu.cc: src/cpu/simple/atomic.cc: src/cpu/simple/timing.cc: Change the setup of the physPort and virtPort to instead happen every time the CPU has a context activated. This is a little high overhead, but keeps it working correctly when the CPU does not have a physical memory attached to it until it switches in (like the case of switch CPUs). src/cpu/o3/thread_context.hh: Change function from being called at init() to just being called whenever the memory ports need to be connected. src/cpu/o3/thread_context_impl.hh: Update this to not delete the port if it's the same as the virtPort. src/cpu/thread_context.hh: Change function from being called at init() to whenever the memory ports need to be connected. src/cpu/thread_state.cc: Instead of initializing the ports, simply connect them, deleting any old ports that might exist. This allows these functions to be called multiple times. src/cpu/thread_state.hh: Ports are no longer initialized, but rather connected at context activation time. --HG-- extra : convert_revision : e399ce5dfbd6ad658c953a7c9c7b69b89a70219e
2006-11-19Update Virtual and Physical ports.Kevin Lim
src/cpu/o3/alpha/cpu_impl.hh: Handle the PhysicalPort and VirtualPort in the ThreadState. src/cpu/o3/cpu.cc: Initialize the thread context. src/cpu/o3/thread_context.hh: Add new function to initialize thread context. src/cpu/o3/thread_context_impl.hh: Use code now put into function. src/cpu/simple_thread.cc: Move code to ThreadState and use the new helper function. src/cpu/simple_thread.hh: Remove init() in this derived class; use init() from ThreadState base class. src/cpu/thread_state.cc: Move setting up of Physical and Virtual ports here. Change getMemFuncPort() to connectToMemFunc(), which connects a port to a functional port of the memory object below the CPU. src/cpu/thread_state.hh: Update functions. --HG-- extra : convert_revision : ff254715ef0b259dc80d08f13543b63e4024ca8d
2006-11-07Put kernel_stats back into arch.Gabe Black
--HG-- rename : src/kern/alpha/idle_event.cc => src/arch/alpha/idle_event.cc rename : src/kern/alpha/idle_event.hh => src/arch/alpha/idle_event.hh rename : src/kern/alpha/kernel_stats.cc => src/arch/alpha/kernel_stats.cc rename : src/kern/alpha/kernel_stats.hh => src/arch/alpha/kernel_stats.hh rename : src/kern/sparc/kernel_stats.hh => src/arch/sparc/kernel_stats.hh rename : src/kern/base_kernel_stats.cc => src/kern/kernel_stats.cc rename : src/kern/base_kernel_stats.hh => src/kern/kernel_stats.hh extra : convert_revision : 42bd3e36b407edbd19b912c9218f4e5923a15966
2006-11-02More proper handling of the ports.Kevin Lim
src/cpu/simple_thread.cc: Fix up port handling to share code. src/cpu/thread_state.cc: Separate code off into a function. src/cpu/thread_state.hh: Make a separate function that will get the CPU's memory's functional port. --HG-- extra : convert_revision : 96a9bb3c5e4b9ba5511678c0fd17f0017c8cd312
2006-10-31Merge ktlim@zizzer:/bk/newmemKevin Lim
into zamp.eecs.umich.edu:/z/ktlim2/clean/newmem-busfix configs/example/fs.py: configs/example/se.py: src/mem/tport.hh: Hand merge. --HG-- extra : convert_revision : b9df95534d43b3b311f24ae24717371d03d615bf
2006-10-31Remove mem parameter. Now the translating port asks the CPU's dcache's peer ↵Kevin Lim
for its MemObject instead of having to have a paramter for the MemObject. 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
2006-10-29An attempt to serialize the state of the micro code mechanism in the simple cpu.Gabe Black
src/cpu/simple/base.cc: Make a microcoded op start at the current micropc, rather than starting at 0. src/cpu/thread_state.cc: Serialize the microPC and nextMicroPC --HG-- extra : convert_revision : 5302215f17312ecef3ff4c6548acb05297ee4ff6
2006-10-16Fix up microcode support.Gabe Black
src/arch/sparc/isa/formats/blockmem.isa: Several small and medium bug fixes. src/cpu/simple/base.cc: Fixed a few compiler errors and made sure the next micro pc is set to 1 to prevent the first microop from executing twice. Also fixed a fetching bug. src/cpu/thread_state.cc: Made sure the microPC and nextMicroPC are initialized properly. --HG-- extra : convert_revision : a0fc8aa18d1ade916f17c557181a793c6108a8af
2006-07-06Various serialization changes to make it possible for the O3CPU to checkpoint.Kevin Lim
src/arch/alpha/regfile.hh: Define serialize/unserialize functions on MiscRegFile itself. src/cpu/o3/regfile.hh: Remove old commented code. src/cpu/simple_thread.cc: src/cpu/simple_thread.hh: Push common serialization code to ThreadState level. Also allow the SimpleThread to be used for checkpointing by other models. src/cpu/thread_state.cc: src/cpu/thread_state.hh: Move common serialization code into ThreadState. --HG-- extra : convert_revision : ef64ef515355437439af967eda2e610e8c1b658b
2006-06-22Change ThreadState constructor ordering to match the rest of the ThreadStates.Kevin Lim
--HG-- extra : convert_revision : 63d98aa8b6a694c285d95a2a57e1b3aaef4cee3b
2006-06-09Two minor fixes.Kevin Lim
src/cpu/o3/lsq_unit_impl.hh: Missed this name change. src/cpu/thread_state.cc: Fix for stats. --HG-- extra : convert_revision : 50ea862f97f2fbc75c1c03d5700df1e8f2c0d122
2006-06-08Creation of translating port pushed off to CPU.Kevin Lim
--HG-- extra : convert_revision : 842556970ff6f0660e8bef13819a3ddfc048d8c8
2006-06-07Update copyright.Kevin Lim
--HG-- extra : convert_revision : 8ad012b1acfe046e6a8a5fb064891d91dadeb2e0
2006-06-07Reorganization/renaming of CPUExecContext. Now it is called SimpleThread in ↵Kevin Lim
order to clear up the confusion due to the many ExecContexts. It also derives from a common ThreadState object, which holds various state common to threads across CPU models. 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