When using the generic-tracing experiment for generating a trace, the
first event, after the tracing is started (the start-symbol) is lost
in the trace. This patch handles this special case seperately.
Change-Id: Ia131a8559d67161532504160826fdb100247ed75
* Fowler's Law of Refactoring: Have test cases available.
* BjoernD's Corollary to Fowler's Law: Use these tests!
Change-Id: I3d3e48ffe08209891c6204655323cd26a0eaaebd
The experiment does support
- 1 bit faults in registers/memory/IP
- 2 bit faults in registers (all)
- n bit faults monte-carlo in registers
Change-Id: Ifdd7df6ec4bc88cfc75391b5e19e0d648fd0d087
During the prune step the data_width of the injected location was not
propagated before. It is now stored in fsppilot (database layout change!) and
sent in the fsppilot protobuf message.
Change-Id: I0562f6fc8957adea0f8a9fb63469ca5e3f4b7b2d
A MemoryImporter that additionally imports Relyzer-style conditional
branch history, instruction opcodes, and a virtual
duration=time2-time1+1 column (MariaDB 5.2+ only) for fault-space
pruning purposes.
Change-Id: I6764a26fa8aae21655be44134b88fdee85e67ff6
This change touches several subsystems, tools and experiments
(sal, util, cmake, import-trace, generic-tracing, nanojpeg), and
changes details not worth separate commits.
Change-Id: Icd1d664d1be5cfc2212dbf77801c271183214d08
This tool can now import extended trace information with the
--extended-trace command-line parameter. The existing importers cease
using artificial access_info_t objects in favor of passing through the
original Trace_Event wherever possible. This allows us to import
extended trace information for all importers.
Change-Id: I3613e9d05d5e69ad49e96f4dc5ba0b1c4ef95a11
It's OK if we cannot map every register LLVM knows to a Fail register
ID, but we need to explicitly skip these cases in the
RegisterImporter.
Change-Id: I2152f819fb94aa4de5720c5798b229b66988d382
This change became necessary as we observed weird fail-client SIGSEGV
crashes with both Bochs and Gem5 backends and different experiments.
Some Fail* components are instantiated statically: the
SimulatorController instance "simulator", containing the
ListenerManager and the CoroutineManager, and the active
ExperimentFlow subclass(es)
(experiments/instantiate-experiment*.ah.in). The experiment(s) is
registered as an active flow in the CoroutineManager at startup.
As plugins (which are ExperimentFlows themselves) are often created on
an experiment's stack, ExperimentFlows deregister themselves on
destruction (e.g., when leaving the plugin variable's scope). The
core problem is, that the creation and destruction order of statically
instantiated objects depends on the link order; if the experiment is
destroyed after the CoroutineManager, its automatic self-deregistering
feature talks to the smoking ruins of the latter.
This change removes all static instantiations of ExperimentFlow and
replaces them with constructions on the heap. Additionally it makes
sure that the CoroutineManager recognizes that a shutdown is in
progress, and refrains from touching potentially already destroyed
data structures when a (mistakenly globally instantiated)
ExperimentFlow deregisters in this case.
Change-Id: I8a7d42fb141222cd2cce6040ab1a01f9de61be24
Contemporary AspectC++ versions can deal with the LLVM headers very
well, and #ifdef __puma stuff in Fail* headers results in
unmaintainable #ifdef __puma blocks in other parts of Fail* (e.g., the
trace importer).
Make sure you're using a 64-bit ac++ when living in a 64-bit userland
(the 32-bit version doesn't know about __int128), and be aware that
AspectC++ r325 introduced a regression that has not been fixed yet.
Change-Id: I5bb759b08995a74b020d44a2b40e9d7a6e18111c
For def/use pruning, the linear address mapping of the x86
sub-registers (e.g., AX represents the lower 16 bits of EAX) must
overlap. If it doesn't, e.g., AX and EAX are considered separate
registers by def/use pruning, resulting in a failure to correlate an
EAX def with a subsequent AX use.
The only user of this mapping up to now, RegisterImporter, forced all
register widths to 8 bits, thereby fortunately canceling out this
problem. Nevertheless it makes no sense to continue encoding a
constant width in these virtual addresses.
Existing trace, fspgroup, fsppilot and result tables may be converted
to the new encoding by using this query:
UPDATE <tablename> SET data_address = ((data_address >> 4) & ~0xf) | data_address & 0xf;
Change-Id: I7a942b78c34f6140803a86af639eeedef3550f34
This change adapts the gem5 backend to the Register class interface change
in commit 52723a8. The necessary modifications suggested adding the "misc"
registers from gem5, too.
Change-Id: I32561c3fc905b9cd396e32ce80c791c01d5682fb
This change introduces a CMake-style FindMySQL.cmake properly looking for
libmysqlclient_r with mysql_config. This also fixes linking on some
machines.
Change-Id: Ifdbfdc3c7440dead37a8b63aaa86732d636aa0e2
* L4SYS_FUNC_{ENTRY,EXIT} now determines the range upon
which an experiment is run. These instructions produce the
output that is relevant for the experiment.
* L4SYS_FILTER_{ENTRY,EXIT} determine a subset of the
above instructions. FI experiments are performed on this
subset (between first occurrence of FILTER_ENTRY and first
occurrence of FILTER_EXIT inclusively).
Change-Id: I37d2189d8256b6b707a0a33984f2b2656071d983
The extended trace register list is needed in multiple locations; the CPU
class is the logical module to contain this information.
Increased number of x86 registers to be traced; we can remove those
that prove unusable for fault-space pruning later on.
Change-Id: Ic46ecdbc55167a6d92872c190317fc0d1a3ad92d
This allows a register to be a member of multiple UniformRegisterSets.
Needed to architecture-specifically store, e.g., a list of registers to
record in traces.
Change-Id: Ia5d20768540efe252a84df967d43e569f107da3a
Add a new instruction filter that allows filtering a list of
ranges read from a file. This allows us to specify multiple
ranges, e.g., to leave out instructions or to focus on multiple
functions
Change-Id: Iba13cda00d0a73edaef270b3cd9100afe3e4668b
Several database implementations, including, e.g., MySQL and PostgreSQL,
allow multiple rows to be INSERTed at once. At least for MySQL this
improves INSERT speed significantly.
Change-Id: Ic223f7915053f30b0cb00c567310f3e780c9fa59
Database::insert_id() retrieves the auto-generated ID from the last INSERT
or UPDATE on a table containing an AUTO_INCREMENT column.
Change-Id: I6ec94d1820bb7e77bd37df33145caa93016fd328
The SConscript in src/core/sal/gem5 is now generated via CMake
(SConscript.in). No more hardcoded relative paths -> Fail* build
folder can now be anywhere. Experiment and Plugin libraries are now
set automagically (using ${EXPERIMENTS_ACTIVATED} /
${PLUGINS_ACTIVATED})
Generated SConscript now resides in binary dir.
Change-Id: I1bf2e17c83c95ffdcf6801c02481064fcb63bfb0
* L4SYS_NUMINSTR counts the instructions that were selected for
injection and is used by the campaign server to generate experiments
* L4SYS_TOTINSTR counts the total number of instructions executed.
It is used by the experiment to determine the timeout value.
Change-Id: Ibf37aea2a1f5ad5afad2b1232ce22fe070b08490
