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2019-05-31fix nameis-iftIru Cai
Change-Id: I83cf9f8f4d8fde48536bc662c46e560b17082107
2019-04-22fix the violation checking for IFT+fenceIru Cai
When using IFT, fenceDelay means the load is deferred, but some load can be between fences and executed, so fenceDelayed instructions should be checked.
2019-04-17add a trackBranch optionIru Cai
2019-04-17IFT for fence schemeIru Cai
2019-04-16track instruction after tainted branchesIru Cai
2019-04-15Add IFT debug flagsIru Cai
2019-04-12add IEW DPRINTFIru Cai
2019-04-12keep time to expose as original scheme when inst->needPostFetch()Iru Cai
because when inst->needPostFetch(), it means that the spec load is already issued this also fixes the mysterious bug caused by the IFT code
2019-04-12add IFT optionsIru Cai
2019-04-10clear taint when previous branch resolvedIru Cai
2019-04-08we need to ++loadsToVLD when (!inst->readyToExpose() && inst->needPostFetch())Iru Cai
2019-04-08implement taint propagationIru Cai
2019-04-03check loads using tainted registers, set USL dst as taintedIru Cai
2019-04-02methods to set taintIru Cai
2019-04-02add taint mapIru Cai
2019-04-02print load instIru Cai
2019-04-01fix getvaddr nullptr stuff, add a non-spec load printingis-rebase11-LSQUnitIru Cai
2019-03-21Request::getVaddr()Iru Cai
Change-Id: Ife5c04941a9181da30e5cc692dec7cfd53feb71f
2019-03-20invisispec-1.0 sourceIru Cai
2018-12-11cpu-o3: Fix bug in LSQUnit(uint32_t, uint32_t) ctorTony Gutierrez
Change 9af1214 added a new ctor to the LSQUnit, however there is a typo/bug because it sizes the SQEntries member variable to lqEntries + 1, as opposed to sqEntries + 1. This change corrects the issue by using sqEntries. Change-Id: I19dfaa5c0e335bd7b84343a92034147d7c5d914e Reviewed-on: https://gem5-review.googlesource.com/c/15015 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-12-10systemc: Update test output for longer lived processes.Gabe Black
In the systemc spec, process handles can be invalidated if they have no children and are terminated. The implementation is not required to do so however, and for the sake of simplicity gem5 currently does not. To quote: "When the underlying process instance terminates, if the process instance has no surviving children, an implementation may choose to invalidate any associated process handles, but it is not obliged to do so." Two tests have reference output which is affected by this (legal) difference in behavior. In one case, the test creates new processes which reuse the names of processes that have been terminated. Since gem5 doesn't invalidate the old processes, a standard mechanism is activated which renames the processes to something which is unique. The other test has this same problem, and also prints the hierarchy of processes several times during the test. In that hierarchy, the terminated tests with no live children are still present, where in the old reference output they've been removed. This change updates the reference output to match gem5's behavior. Change-Id: I363448de10080bdce01a4df92f991c67b31a2401 Reviewed-on: https://gem5-review.googlesource.com/c/14919 Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-10systemc: Update the ordering in the reference output for some tests.Gabe Black
There are a number of cases where systemc leaves the decision of what order things happen up to the kernel, and any ordering is legal and conformant with the spec as long as it's repeatable. The reference outputs reflect a particular choice of ordering which is implementation specific, and while considerable effort has been made to make the gem5 ordering match the Accellera ordering, at a certain point that's no longer practical or desirable. This change manually updates the reference output for the tests that haven't been excluded for other reasons which have this sort of ordering problem. They have been individually examined, and as best as I can tell changing the output this way does not mask any underlying error. One or two real problems were discovered in addition to the ordering issues, and those were fixed in earlier changes. Change-Id: I915269998de3f33d5ab5d1fd754a830fd620184d Reviewed-on: https://gem5-review.googlesource.com/c/14918 Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-10systemc: Ignore process control functions on terminated processes.Gabe Black
These functions can descend to the children of a terminated process, but should have no effect on that process itself. Change-Id: I6e4bdec8c492dd03d05bc1397aa080e8a51397c1 Reviewed-on: https://gem5-review.googlesource.com/c/14917 Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-10systemc: Update signals before initing processes.Gabe Black
We were supposed to do one update phase before adding all processes which didn't have dont_initialize() called to the run queue. We were doing that in the opposite order. Change-Id: I6dd4108040d455dc78029da029a2eb5e7af819cb Reviewed-on: https://gem5-review.googlesource.com/c/14915 Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-08base, systemc: Fix clang compilationGiacomo Travaglini
This patch is fixing the following issues: - base: typename should be used only for types - systemc: 'GCC_VERSION' is not defined for clang Change-Id: I27c94445d65691a08a0a14a0ffe6b6942f6c455f Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14976 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-07mem: Compile tracePacket only when TRACING_ON is definedGiacomo Travaglini
If TRACING_ON is not defined (e.g. when building gem5.fast), clang compilations will fail reporting an unused function. Change-Id: I959dba6e9fcf74b951e16365077939ae4d4ef924 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14975 Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2018-12-07mem-cache: Workaround for setWhenReady assertionDaniel R. Carvalho
Change 174da8e2da6a896d2e97bc264f9c827a0f4c35ac added an assert that is not satisfiable with current implementation, breaking some regression tests. Change-Id: Ibafaf0c51906384364f0b2a4b931f8ec6126d858 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/14955 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2018-12-06base: Ported circlebuf to CircularQueueRekai Gonzalez-Alberquilla
Ported the existing circlebuf on top of the CircularQueue to condense shared functionality and minimise code/functionality replication. Additional contributors: Gabor Dozsa. Change-Id: Ib4e67c638f0fb66b54cef77007a03439218bda7f Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13128 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
2018-12-06base: Iterable CircularQueue implementationRekai Gonzalez-Alberquilla
The former implementation of CircleBuf is functional but a bit too tailored to match a use-case. This patches introduces a new iterable circular queue, which adds some more functionality so it can also be used for the newer LSQ implementation, where iteration and iterators are a very desirable feature. Additional contributors: Gabor Dozsa. Change-Id: I5cfb95c8abc1f5e566a114acdbf23fc52a38ce5e Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13127 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
2018-12-05arch-x86: Add sys/syscall.h to x86 process.cc/syscall_emul.ccTony Gutierrez
Change a66d12c guards the selection of getdents() in x86's process.cc file with SYS_getdents, however process.cc does not include the right header for SYS_getdents, which leads to x86 choosing the unimplemented call. This change adds sys/syscall.h to address the problem. This change also adds sys/syscall.hh to syscall_emu.cc, which only includes syscall.hh and may not be supported on all systems. Change-Id: If1adcf41e9e455de5f2827ba98c542fdcacdc22e Reviewed-on: https://gem5-review.googlesource.com/c/14775 Reviewed-by: Ciro Santilli <ciro.santilli@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
2018-12-05mem-cache: Remove writebacks parameter from serviceMSHRTargetsDaniel R. Carvalho
Change 8ba77ae8fc98a355082da2bd9fdc6ecf4928f725 introduced the writebacks parameter, but it was never used. Change-Id: I225e5b399de42d77c72fc0012d3dc93ef39b8853 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/14896 Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2018-12-04mem-cache: Add getter and setter to CacheBlk::whenReadyDaniel R. Carvalho
Add a getter and a setter function to access CacheBlk::whenReady to encapsulate the variable and allow error checking. This error checking consists on verifying that writes to a block after it has been inserted follow a chronological order. As a side effect, tickInserted retain its value until updated, that is, it is not reset in invalidate(). Change-Id: Idc3c5a99c3f002ee9acc2424f00e554877fd3a69 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/14715 Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2018-12-04base: Fix fiber compilation issue for Mac OSNikos Nikoleris
Mac OS has deprecated the use of ucontext and at the moment we are using a workaround to enable it. A side-effect is that the code is marked as _POSIX_C_SOURCE and consequently <sys/mman.h> requires the code to be also marked as _DARWIN_C_SOURCE to include the definition of MAP_ANONYMOUS. Change-Id: I65550d11a0a21cd36d832a7de6320e7e3f332a9d Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14817 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-04base, sim: Add missing destructorsNikos Nikoleris
Derived classes with virtual functions need to define a virtual destructor or a protected destructor otherwise calling the base class destructor has undefined behavior. This change adds a virtual distructor in the base class. Change-Id: I1c855aa56dff6585ff99b9147bdb4eb9729a0a53 Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14815 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-12-03base: Add type alias for raw pointer in RefCountingPtrGiacomo Gabrielli
Change-Id: Ied2204566a8fc5c34fb4702301051b8e5ab84ffe Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13717 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-12-03mem-cache: Optimize sector valid and secure checkDaniel R. Carvalho
Previously a loop was being done to check whether the block was valid/secure or not. Variables have been added to skip this loop and save and update sector block state when sub-blocks are validated, invalidated and secured. Change-Id: Ie1734f7dfda9698c7bf22a1fcbfc47ffb9239cea Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/14363 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-12-03cpu: Change raw pointers to STL ContainersRekai Gonzalez-Alberquilla
This patch changes two members from being raw pointers to being STL containers. The reason behind, other than cleanlyness and arguable OO best practices is that containers have more intronspections capabilities than naked pointers do, as the size is known. Using STL containers adds little overhead and eases the automation of process during debugging (gdb). Change-Id: I4d9d3eedafa8b5e50ac512ea93b458a4200229f2 Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13126 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-12-03arch-arm: correctly set floats from GDB on aarch64Ciro Santilli
aarch64 floating point registers are now stored as vector type, but this was not updated in the stub. Change-Id: I4a2bc1cea0eec9beeb5bbd49e2a868b9d5ed0a42 Reviewed-on: https://gem5-review.googlesource.com/c/14498 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-12-03base: increase the GDB buffer size dynamicallyCiro Santilli
The size was not large enough for the 'G' packet on aarch64, which the client sends to set registers. This would lead to the stub not to be able to find the end of the input packet and keep waiting forever. Change-Id: Icb149f15a6c769371ebcb6ec5fbebc6170c31fc6 Reviewed-on: https://gem5-review.googlesource.com/c/14497 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-12-03arch-arm: only change the pc address when GDB registers are setCiro Santilli
The entire pcState was being reset, which made the simulation incorrectly switch to aarch32 from aarch64. Change-Id: I9ba7dd0ed95bc6120d94393bba272e0cb8c081c5 Reviewed-on: https://gem5-review.googlesource.com/c/14496 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-12-03arch-arm: fix the aarch64 GDB stubCiro Santilli
The main change is to remove vector registers from the GDB stub. Those registers were intended for SVE, which is a new architecture feature and not yet treated by default on the GDB present in Ubuntu 18.04, and possibly not even on GDB master. As a result, aarch64 GDB stub connections would fail with: Remote 'g' packet reply is too long The correct way to support those registers is to send XML GDB target description files to the client. This feature is not yet available for any architecture, and should be implemented in future patches. Other smaller fixes are: * cpsr is uint32_t in aarch64 as well as arm * use M5_ATTR_PACKED on the register structs since they are being cast and sent as byte arrays Change-Id: I77cd8a98e322ecc60799e5b11fe5cd414d893cc7 Reviewed-on: https://gem5-review.googlesource.com/c/14495 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
2018-11-30systemc: Disable systemc when using gcc versions older than 5.0.Gabe Black
These versions don't support the std::put_time function. Since versions of gcc older than 5.0 aren't going to be supported at all in the fairly near future, this should only be temporary. The number of people using both systemc and older versions of gcc should be very small, or even zero. Change-Id: Ie9572fdf83ba9569df6bc0457c98d86565dcdcd8 Reviewed-on: https://gem5-review.googlesource.com/c/14755 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29base: Change the unit test binary names to use .test, and to be consistent.Gabe Black
Most tests were named *test where * was the base name of the file being tested, but some were named differently based on, for instance, the name of the class that file implemented. This change makes all the test names consistently based off of the file name they test, and also brings in the new .test convention to make them easier to read. Now, if you have a file like fiber.cc you want to test, you'd have a unit test in a file called fiber.test.cc, and a test called fiber.test which would generate a binary called fiber.test.opt, fiber.test.debug, etc. Change-Id: I61d59016090371a9bae72066e7473a34aecea21f Reviewed-on: https://gem5-review.googlesource.com/c/14677 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29base: Rename unit test cc files to be *.test.cc.Gabe Black
This makes the name easier to read, looks ok if the file is named with underscores between words or not, is easy to grep for, and shouldn't introduce any ambiguities in the file names. Change-Id: I34b7bcccea2d87c10c0de417dd5e3ef27c4b5666 Reviewed-on: https://gem5-review.googlesource.com/c/14676 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29base: Fix include order in the inifile unit test.Gabe Black
Even though gtest.h is a C++ header, it looks like a C header which makes the style check hook upset. Lets move it up so the hook doesn't complain when the file is changed. Change-Id: Ibcc2d0b7bf3b254c70e55b30379ebd4b70933c26 Reviewed-on: https://gem5-review.googlesource.com/c/14675 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-11-29systemc: Run the systemc tests directly from their build directories.Gabe Black
We were previously running them from the current directory to start with, and then having the config script switch to the build directory. That worked, except when output streams might be opened as part of the global constructors which would run before the config script. This change makes us start from the build directory directly, making the switch in the config script unnecessary and ensuring that no files leak outside of the build when running tests. Change-Id: I484168793bfc5abc4e5631fb3468733fb9d829af Reviewed-on: https://gem5-review.googlesource.com/c/14519 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29systemc: Run the systemc tests with the CWD in the build directory.Gabe Black
This will prevent some (but not all) output files the tests generate from ending up outside the build directory. Because some output file streams are constructed as global objects, their paths are resolved relative to the CWD when gem5 starts, before the config script has a chance to change it. Subsequent changes will make verify.py should make gem5 start with the correct working directory, cleaning up the remaining leaking files. Change-Id: I75a1256719dab4c98ab868c209d09b9dcdabb458 Reviewed-on: https://gem5-review.googlesource.com/c/14518 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29systemc: Add DEPS files for some tests with non-source file dependencies.Gabe Black
This ensures that those files will be available when running the test relative to its build directory. Change-Id: If775ca328b3e1165baa968e4b39c36db0172837c Reviewed-on: https://gem5-review.googlesource.com/c/14517 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-29systemc: Make verify.py recognize a DEPS file in test dirs.Gabe Black
This file lists additional files beyond the sources that the test relies on, like files it uses when running. Change-Id: Ifc4958b26eed08689e0e72bd87f84388dbcf1898 Reviewed-on: https://gem5-review.googlesource.com/c/14516 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-28base: Add missing overrides in statistics headerNikos Nikoleris
Change-Id: Id5ee2a970a3dceee1b7e24ce3b452b7fece87875 Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14619 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
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