Commit graph

9953 commits

Author SHA1 Message Date
Dam Sunwoo
6b4543184e sim: added option to serialize SimLoopExitEvent
SimLoopExitEvents weren't serialized by default. Some benchmarks
utilize a delayed m5 exit pseudo op call to terminate the simulation
and this event was lost when resuming from a checkpoint generated
after the pseudo op call. This patch adds the capability to serialize
the SimLoopExitEvents and enable serialization for m5_exit and m5_fail
pseudo ops by default. Does not affect other generic
SimLoopExitEvents.
2013-10-31 13:41:13 -05:00
Stephan Diestelhorst
19c2a606fa mem: Add "const" attribute to Packet getters
Add a "const" keywords to the getters in the Packet class so these can be
invoked on const Packet objects.
2013-10-31 13:41:13 -05:00
Prakash Ramrakhyani
885656f2ed mem: Add privilege info to request class
This patch adds a flag in the request class that indicates if the request
was made in privileged mode.
2013-10-31 13:41:13 -05:00
Ali Saidi
68dee58c38 arm: fix m5ops binary for ARM and add m5fail.
Changes to make m5ops work under virtualization seemed to break them working
with non-virtualized systems and the recently added m5 fail command makes
the m5op binary not compile.  For now remove the code for virtualization.
2013-10-31 13:41:13 -05:00
Ali Saidi
79f81e2641 cpu: Fix O3 issuse with load+barrier instructions.
Fix a problem in the O3 CPU for instructions that are both
memory loads and memory barriers (e.g. load acquire) and
to uncacheable memory. This combination can confuse the
commit stage into commitng an instruction that hasn't
executed and got it's value yet. At the same time refactor
the code slightly to remove duplication between two of
the cases.
2013-10-31 13:41:13 -05:00
Lluc Alvarez
2b9b245fb3 ruby: set SenderMachine in messages of MOESI_CMP_directory
This patch adds missing initializations of the SenderMachine field of
out_msg's when thery are created in the L2 cache controller of the
MOESI_CMP_directory coherence protocol. When an out_msg is created and this
field is left uninitialized, it is set to the default value MachineType_NUM.
This causes a panic in the MachineType_to_string function when gem5 is
executed with the Ruby debug flag on and it tries to print the message.

Committed by: Nilay Vaish <nilay@cs.wisc.edu>
2013-10-30 10:35:06 -05:00
Emilio Castillo
80fa6a0edc ruby: Fixed a deadlock when restoring a checkpoint with garnet
This patch fixes a problem where in Garnet, the enqueue time in the
VCallocator and the SWallocator which is of type Cycles was being stored
inside a variable with int type.

This lead to a known problem restoring checkpoints with garnet & the fixed
pipeline enabled. That value was really big and didn't fit in the variable
overflowing it, therefore some conditions on the VC allocation stage & the
SW allocation stage were not met and the packets didn't advance through the
network, leading to a deadlock panic right after the checkpoint was restored.

Committed by: Nilay Vaish <nilay@cs.wisc.edu>
2013-10-30 10:35:05 -05:00
Stephan Diestelhorst
4e9d91016a mem: De-virtualise interfaces in the CoherentBus
The CoherentBus eventually got virtual methods for its interface. The
"virtuality" of the CoherentBus, however, comes already from the virtual
interface of the bus' ports. There is no need to add another layer of virtual
functions, here.
2013-10-17 10:20:45 -05:00
Matt Horsnell
6decd70bfb cpu: add consistent guarding to *_impl.hh files. 2013-10-17 10:20:45 -05:00
Sascha Bischoff
52f90890a3 mem: Add PortID to QueuedMasterPort constructor
This patch adds the PortID to the QueuedMasterPort. This allows a PortID to be
specified as it previously was set to the detault value of -1.
2013-10-17 10:20:45 -05:00
Matt Evans
94d17a547c arm: Add a 'clear PPI' method to gic_pl390
The underlying assumption that all PPIs must be edge-triggered is
strained when the architected timers and VGIC interfaces make
level-behaviour observable. For example, a virtual timer interrupt
'goes away' when the hypervisor is entered and the vtimer is disabled;
this requires a PPI to be de-activated.

The new method simply clears the interrupt pending state.
2013-10-17 10:20:45 -05:00
Geoffrey Blake
2b9138135e config: Fix ommission of number base in ethernet address param
The ethernet address param tries to convert a hexadecimal
string using int() in python, which defaults to base 10,
need to specify base 16 in this case.
2013-10-17 10:20:45 -05:00
Geoffrey Blake
3d582c767a config: Fix for port references generated multiple times
SimObjects are expected to only generate one port reference per
port belonging to them.  There is a subtle bug with using "not"
here as a VectorPort is seen as not having a reference if it is
either None or empty as per Python docs sec 9.9 for Standard operators.
Intended behavior is to only check if we have not created the reference.
2013-10-17 10:20:45 -05:00
Dam Sunwoo
ad614bf24d dev: Add option to disable framebuffer .bmp dump in run folder
There is an option to enable/disable all framebuffer dumps, but the
last frame always gets dumped in the run folder with no other way to
disable it. These files can add up very quickly running many experiments.

This patch adds an option to disable them. The default behavior
remains unchanged.
2013-10-17 10:20:45 -05:00
Faissal Sleiman
1746eb4a11 cpu: Removing an unused variable in rename 2013-10-17 10:20:45 -05:00
Faissal Sleiman
9195f1fbfd cpu: Change IEW DPRINTF to use IEW debug flag
IEW DPRINTF uses Decode debug flag, which appears to be a copying error. This
patch changes this to the IEW Debug flag.
2013-10-17 10:20:45 -05:00
Faissal Sleiman
e516531bd0 cpu: Put in assertions to check for maximum supported LQ/SQ size
LSQSenderState represents the LQ/SQ index using uint8_t, which supports up to
 256 entries (including the sentinel entry). Sending packets to memory with a
higher index than 255 truncates the index, such that the response matches the
wrong entry. For instance, this can result in a deadlock if a store completion
does not clear the head entry.
2013-10-17 10:20:45 -05:00
Dam Sunwoo
1e2a455a23 util: Streamline .apc project convertsion script
This Python script generates an ARM DS-5 Streamline .apc project based
on gem5 run. To successfully convert, the gem5 runs needs to be run
with the context-switch-based stats dump option enabled (The guest
kernel also needs to be patched to allow gem5 interrogate its task
information.) See help for more information.
2013-10-17 10:20:45 -05:00
Eric Van Hensbergen
bfdd031c0d arm: Accomodate function name changes in newer linux kernels 2013-10-17 10:20:45 -05:00
Ali Saidi
2f7b012ced arm: Fix a GIC mask register bug
This resulted in a kernel printk that said,
"GIC CPU mask not found - kernel will fail to boot."
2013-10-17 10:20:45 -05:00
Ali Saidi
cf266f05a9 cpu: Fix O3 uncacheable load that is replayed but misses the TLB
This change fixes an issue in the O3 CPU where an uncachable instruction
is attempted to be executed before it reaches the head of the ROB. It is
determined to be uncacheable, and is replayed, but a PanicFault is attached
to the instruction to make sure that it is properly executed before
committing. If the TLB entry it was using is replaced in the interveaning
time, the TLB returns a delayed translation when the load is replayed at
the head of the ROB, however the LSQ code can't differntiate between the
old fault and the new one. If the translation isn't complete it can't
be faulting, so clear the fault.
2013-10-17 10:20:45 -05:00
Ali Saidi
60ce2b34fe mem: Make MemoryAccess flag more verbose
This patch extends the MemoryAccess debug flag to report who sent the
requests and the cacheability.
2013-10-17 10:20:45 -05:00
Andreas Hansson
8a8e5cdc7e build: Place proto output in the same directory, also for EXTRAS
This patch changes the ProtoBuf builder such that the generated source
and header is placed in the build directory of the proto file. This
was previously not the case for the directories included as EXTRAS. To
make this work, we also ensure that the build directory for the EXTRAS
are added to the include path (which does not seem to automatically be
the case).
2013-10-17 10:20:45 -05:00
Ali Saidi
735847179d arm, config: Fix a small issue with the dtb file being specified 2013-10-17 10:20:45 -05:00
Ali Saidi
21f1e16763 config: Fix memtest example script 2013-10-17 10:20:45 -05:00
Ali Saidi
88b811b4ef dev: Allow additional UART interrupts to be set
This patch allows setting a few additional interrupts for status
changes that should never occur.
2013-10-17 10:20:45 -05:00
Stan Czerniawski
c2553745c9 build: Enable color diagnostics in clang by preserving TERM. 2013-10-17 10:20:45 -05:00
Andreas Sandberg
cc42e87b85 kvm: Fix latency calculation of IPR accesses
When handling IPR accesses in doMMIOAccess, the KVM CPU used
clockEdge() to convert between cycles and ticks. This is incorrect
since doMMIOAccess is supposed to return a latency in ticks rather
than when the access is done. This changeset fixes this issue by
returning clockPeriod() * ipr_delay instead.
2013-10-16 18:12:15 +02:00
Steve Reinhardt
10e6450120 test: update stats
Update stats for recent changes.  Mostly minor changes
in register access stats due to addition of new cc
register type and slightly different (and more accurate)
classification of int vs. fp register accesses.
2013-10-16 10:44:12 -04:00
Steve Reinhardt
b10ff075b1 ruby: eliminate non-determinism from ruby.stats output
Get rid of non-deterministic "stats" in ruby.stats output
such as time & date of run, elapsed & CPU time used,
and memory usage.  These values cause spurious
miscomparisons when looking at output diffs (though
they don't affect regressions, since the regressions
pass/fail status currently ignores ruby.stats entirely).

Most of this information is already captured in other
places (time & date in stdout, elapsed time & mem usage
in stats.txt), where the regression script is smart
enough to filter it out.  It seems easier to get rid of
the redundant output rather than teaching the
regression tester to ignore the same information in
two different places.
2013-10-15 18:22:49 -04:00
Steve Reinhardt
fe61a074a2 scons: fix minor update-ref bug in regressions
In the unusual case that regressions are run with --update-ref
when there is no existing regression output, scons gets
confused because it depends on stats.txt to trigger the
update, but it has no indication that running the test will
generate the stats.txt file.  (In the typical case where
stats.txt already exists, scons doesn't care about where
it came from.)

It's easy to fix this just by adding the stats.txt file
to the target list for the test action.
2013-10-15 18:22:41 -04:00
Yasuko Eckert
1bb293d1e7 arch/x86: add support for explicit CC register file
Convert condition code registers from being specialized
("pseudo") integer registers to using the recently
added CC register class.

Nilay Vaish also contributed to this patch.
2013-10-15 14:22:44 -04:00
Yasuko Eckert
2c293823aa cpu: add a condition-code register class
Add a third register class for condition codes,
in parallel with the integer and FP classes.
No ISAs use the CC class at this point though.
2013-10-15 14:22:44 -04:00
Steve Reinhardt
5526221847 cpu/o3: clean up rename map and free list
Restructured rename map and free list to clean up some
extraneous code and separate out common code that can
be reused across different register classes (int and fp
at this point).  Both components now consist of a set
of Simple* objects that are stand-alone rename map &
free list for each class, plus a Unified* object that
presents a unified interface across all register
classes and then redirects accesses to the appropriate
Simple* object as needed.

Moved free list initialization to PhysRegFile to better
isolate knowledge of physical register index mappings
to that class (and remove the need to pass a number
of parameters to the free list constructor).

Causes a small change to these stats:
  cpu.rename.int_rename_lookups
  cpu.rename.fp_rename_lookups
because they are now categorized on a per-operand basis
rather than a per-instruction basis.
That is, an instruction with mixed fp/int/misc operand
types will have each operand categorized independently,
where previously the lookup was categorized based on
the instruction type.
2013-10-15 14:22:44 -04:00
Steve Reinhardt
219c423f1f cpu: rename *_DepTag constants to *_Reg_Base
Make these names more meaningful.

Specifically, made these substitutions:

s/FP_Base_DepTag/FP_Reg_Base/g;
s/Ctrl_Base_DepTag/Misc_Reg_Base/g;
s/Max_DepTag/Max_Reg_Index/g;
2013-10-15 14:22:43 -04:00
Steve Reinhardt
a830e63de7 isa: clean up register constants
Clean up and add some consistency to the *_Base_DepTag
constants as well as some related register constants:
- Get rid of NumMiscArchRegs, TotalArchRegs, and TotalDataRegs
  since they're never used and not always defined
- Set FP_Base_DepTag = NumIntRegs when possible (i.e.,
  every case except x86)
- Set Ctrl_Base_DepTag = FP_Base_DepTag + NumFloatRegs
  (this was true before, but wasn't always expressed
  that way)
- Drastically reduce the number of arbitrary constants
  appearing in these calculations
2013-10-15 14:22:43 -04:00
Steve Reinhardt
9bd017b8ae cpu/o3: clean up scoreboard object
It had a bunch of fields (and associated constructor
parameters) thet it didn't really use, and the array
initialization was needlessly verbose.

Also just hardwired the getReg() method to aleays
return true for misc regs, rather than having an array
of bits that we always kept marked as ready.
2013-10-15 14:22:43 -04:00
Steve Reinhardt
c009d0eb2a cpu/o3: clean up physical register file
No need for PhysRegFile to be a template class, or
have a pointer back to the CPU.  Also made some methods
for checking the physical register type (int vs. float)
based on the phys reg index, which will come in handy later.
2013-10-15 14:22:43 -04:00
Steve Reinhardt
06d246ab4a cpu/inorder: merge register class enums
The previous patch introduced a RegClass enum to clean
up register classification.  The inorder model already
had an equivalent enum (RegType) that was used internally.
This patch replaces RegType with RegClass to get rid
of the now-redundant code.
2013-10-15 14:22:43 -04:00
Steve Reinhardt
7aa423acad cpu: clean up architectural register classification
Move from a poorly documented scheme where the mapping
of unified architectural register indices to register
classes is hardcoded all over to one where there's an
enum for the register classes and a function that
encapsulates the mapping.
2013-10-15 14:22:42 -04:00
Andreas Sandberg
4f5775df64 mem: Rename the ASI_BITS flag field in Request
ASI_BITS in the Request object were originally used to store a memory
request's ASI on SPARC. This is not the case any more since other ISAs
use the ASI bits to store architecture-dependent information. This
changeset renames the ASI_BITS to ARCH_BITS which better describes
their use. Additionally, the getAsi() accessor is renamed to
getArchFlags().
2013-10-15 13:26:34 +02:00
Andreas Sandberg
5e7738467b mem: Use a flag instead of address bit 63 for generic IPRs
Using address bit 63 to identify generic IPRs caused problems on
SPARC, where IPRs are heavily used. This changeset redefines how
generic IPRs are identified. Instead of using bit 63, we now use a
separate flag (GENERIC_IPR) a memory request.
2013-10-15 13:24:35 +02:00
Nilay Vaish
c753b273dc Added tag stable_2013_10_14 to the changeset 6a043adb1e8d 2013-10-14 13:58:02 -05:00
Nilay Vaish
dbc3b2e86a config: correct example ruby scripts
A couple of recent changesets added/deleted/edited some variables
that are needed for running the example ruby scripts. This changeset
edits these scripts to bring them to a working state.
2013-10-09 17:28:14 -05:00
Andreas Hansson
a44bb59192 stats: Bump pc-simple-timing-ruby stats
This patch simply brings the stats for the pc-simple-timing-ruby
regression up to date. The particular regression seems to give
different results on different systems unfortunately, and this update
reflects the current behaviour on zizzer.
2013-10-09 04:41:19 -04:00
Nilay Vaish
2dec06a57b config: set cwd for processes in se.py 2013-10-07 18:05:50 -05:00
Nilay Vaish
87cc327abb x86: enables lstat and readlink syscalls 2013-10-07 18:05:49 -05:00
Andreas Sandberg
c0f367e514 base: Fix a potential race in PollQueue::setupAsyncIO
There is a potential race between enabling asynchronous IO and
selecting the target for the SIGIO signal. This changeset move the
F_SETOWN call to before the F_SETFL call that enables SIGIO
delivery. This ensures that signals are always sent to the correct
process.
2013-10-07 16:03:15 +02:00
Andreas Sandberg
0dd6f87e63 kvm: Service events in the instruction event queues
This changset adds calls to the service the instruction event queues
that accidentally went missing from commit [0063c7dd18ec]. The
original commit only included the code needed to schedule instruction
stops from KVM and missed the functionality to actually service the
events.
2013-10-03 11:00:18 +02:00
Andreas Hansson
05ed2deda6 kvm: Only include KVM support for supported kernels
This patch adds a check to ensure that the KVM API provided by the
running kernel is what we are expecting.
2013-10-02 06:08:45 -04:00