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2017-11-28arch-arm: Add assertions when extracting an ArmSystem from a TCGiacomo Travaglini
We sometimes need to cast the System pointer stored in a ThreadContext to an ArmSystem pointer to query global system setting. Add an assertion to make sure that the cast resulted in a valid pointer. Change-Id: Id382d0c1dceefee8f74d070c205c7b43b83ab215 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/6161 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28tests: Move the bituniontest to be alongside the bitunion header.Gabe Black
Change-Id: I7c1a49c41672a1108fcf67c5505b0441f90588ef Reviewed-on: https://gem5-review.googlesource.com/6142 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28scons: Build GTests in the directory they're declared.Gabe Black
This will let us move unit tests into the directory of the code they're testing. Change-Id: I611582eb00a06a848f3ce7da89f64e42660cb844 Reviewed-on: https://gem5-review.googlesource.com/6141 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28tests: Reimplement the bituniontest as a googletest.Gabe Black
The implementation is very similar to the old test structurally, and should test all the same things. Change-Id: I58f1559d0943f2494ef06ee1d7ee5314a3852a8c Reviewed-on: https://gem5-review.googlesource.com/6085 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28scons: Add in a new type of unit test called GTest.Gabe Black
This type of unit test is almost the same as UnitTest, except that it builds in the googletest library with the appropriate flags, and it also omits all the gem5 object files by default. Change-Id: I230db7ede563a73a9da0ebeed44aca389f724465 Reviewed-on: https://gem5-review.googlesource.com/6084 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28tests: scons: Integrate the googletest library into the build.Gabe Black
A static library is built using gtest-all.cc and includes the gtest main function from gtest_main.cc. extra libraries to use when linking are included in the main environment variable GTEST_LIBS, and extra CPPFLAGS are in GTEST_CPPFLAGS. The library's path is added to the library search path, and it's headers to the header search path. Change-Id: I2bd6f705bd9fac5db9280996f574b168c11ff8ce Reviewed-on: https://gem5-review.googlesource.com/6083 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28tests: Import the googletest library, release version 1.8.0.Gabe Black
Change-Id: Ic6c1391a19238011ff5cc97f513dbdc020dc6144 Reviewed-on: https://gem5-review.googlesource.com/6082 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28scons: Minor cleanup of how partial linking is handled in makeEnv.Gabe Black
Git rid of the unused partial_objs variable, and change append to extend since the result of builders is a list of nodes and not individual nodes, even if there's only one target. Change-Id: Ie51225d3ea699eb7da18199ac3bf3e868e3994a6 Reviewed-on: https://gem5-review.googlesource.com/5985 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-28arch-riscv: Move static_inst into a directoryAlec Roelke
This patch creates an "insts" directory in src/arch/riscv to store static portions of instruction definitions that aren't part of the code generated by the ISA description. It serves as a starting point for future patches to simplify the ISA description. Change-Id: I6700522143f6fa6c9b18a30e1fbdc8f80cdc7afa Reviewed-on: https://gem5-review.googlesource.com/6021 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Alec Roelke <ar4jc@virginia.edu>
2017-11-27tests: Build the input file into the initest unit test.Gabe Black
This breaks an external dependency and makes the expected command line conform to the other unit tests. Also get rid of some ancient tests which test adding to the ini's contents based on command line arguments. This test still needs to be modified so that it actually checks whether what happened was correct. Change-Id: I2c9ea9fa79781bceb5cd3d1419870924e8bbd45f Reviewed-on: https://gem5-review.googlesource.com/6081 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-27scons: Break make_obj into make_static and make_shared functions.Gabe Black
The make_obj function took a boolean value which just selected which of the two lines it in would actually do something. This change breaks it into two lambdas, make_static and make_shared, which just do whichever line would have been requested, making the funciton name more self descriptive and getting rid of the generally unnamed and opaque boolean argument. Change-Id: I457e40034b7e7f5a3e7294a8e1f15bbd42e0720e Reviewed-on: https://gem5-review.googlesource.com/5984 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-27scons: Remove the extra_deps option from the helper function make_obj.Gabe Black
This had only one use, and made the function more complicated than it needed to be. Change-Id: I22147a0c1239b457c577a6a24b423065e539833b Reviewed-on: https://gem5-review.googlesource.com/5983 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-27scons: Get rid of a flag which makes Werror optional.Gabe Black
This flag wasn't being used. Also move the Werror code to the SConstruct now that it's being applied universally. Change-Id: I18b00d4b41bc1add9271ca299c020c14970a6926 Reviewed-on: https://gem5-review.googlesource.com/5982 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-27scons: Move some compiler flag setting code to the SConstruct.Gabe Black
These settings are invariant, so there's no reason to apply them over and over again for the child environments used for various build products. Change-Id: Icb4053105e4f1c43008f2422ba30c7206b7ff365 Reviewed-on: https://gem5-review.googlesource.com/5981 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-27scons: Get rid of SourceFile's done function.Gabe Black
This function doesn't seem to be used by anything. A similar one off mechanism exists for SimObjects which is we might also be able to get rid of. Change-Id: I65038c3495fa69cf94042dc78f09876d5e9a557f Reviewed-on: https://gem5-review.googlesource.com/5841 Maintainer: Gabe Black <gabeblack@google.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-11-27scons: Switch from "guards" to "tags" on source files.Gabe Black
Tags are just arbitrary strings which are attached to source files which mark them as having some property. By default, all source files have the "gem5 lib" tag added to them which marks them as part of the gem5 library, the primary component of the gem5 binary but also a seperable component for use in, for example, system C. The tags can be completely overridden by setting the "tags" parameter on Source, etc., functions, and can be augmented by setting "add_tags" which are tags that will be added, or alternatively additional tags. It's possible to specify both, in which case the tags will be set to the union of tags and add_tags. add_tags is supposed to be a way to add extra tags to the default without actually overriding the default. Both tags and add_tags can be a list/tuple/etc of tags, or a single string which will be converted into a set internally. Other existing tags include: 1. "python" for files that need or are used with python and are excluded when the --without-python option is set 2. "main" for the file(s) which implement the gem5 binary's main function. 3. The name of a unit test to group its files together. 4. Tags which group source files for partial linking. By grouping the "tags" into a single parameter instead of taking all extra parameters as tags, the extra parameters can, in the future, be passed to the underlying scons environment. Also, the tags are either present or not. With guards, they could be present and True, present and False, or not present at all. Change-Id: I6d0404211a393968df66f7eddfe019897b6573a2 Reviewed-on: https://gem5-review.googlesource.com/5822 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-22tests: Resurrect initest input file(s).Gabe Black
Delete the current version of foo.ini which was modified, restore the previous version, and initest.ini. Preprocess initest.ini which includes foo.ini, and tidy up the resulting file. This file will (mostly) get the initest unit test to work. Some other cleanups are still necessary. Change-Id: I4e46abc73ac89f88177eec92f572452f63ba8019 Reviewed-on: https://gem5-review.googlesource.com/6041 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22tests: Fix the stats unit test.Gabe Black
This has been broken since February. The interface for opening initializing where the stats output should go was changed, but the test wasn't updated. Change-Id: I54bd8be15bf870352d5fcfad95ded28d87c7cc5a Reviewed-on: https://gem5-review.googlesource.com/6001 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-22arch-arm: Add support for the brk instructionAndreas Sandberg
Add support for software breakpoints as signalled by the aarch64 brk instruction. This introduces a new SoftwareBreakpoint fault. Change-Id: I93646c3298e09d7f7b0983108ba8937c7331297a Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5721 Reviewed-by: Giacomo Gabrielli <Giacomo.Gabrielli@arm.com>
2017-11-22arch-arm: HVC instruction undefined in secure EL1Giacomo Travaglini
Since EL2 is not available in secure mode, any HVC call from secure mode should be treated as undefined. This behaviour was implemented in aarch32 HVC but not in 64 bit version Change-Id: Ibaa4d8b1e8fe01d2ba3ef07494c09a4d3e7e87b0 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5921 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-22arch-riscv: Add missing system callsAlec Roelke
This patch adds all system calls present in riscv-gnu-toolchain at commit hash 65cb174. Many of them do not have implementations in gem5, so they are just placeholders. [Remove the variadic macro and replace it with a function that has default arguments because variadic macros may not be portable across compilers] [Remove spaces around default arguments of createSyscall for better style] [Switch from using a loose function to using SyscallDesc's new constructor] Change-Id: Iff97c689109121b39df423c72d0e79c6366e31b9 Reviewed-on: https://gem5-review.googlesource.com/5322 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Alec Roelke <ar4jc@virginia.edu>
2017-11-22sim-se: Add default to SyscallDesc constructorAlec Roelke
This patch adds a default value of unimplementedFunc to SyscallDesc's constructor's second argument, which makes adding system call placeholders to SE mode cleaner. Change-Id: I3e7efb3a887cc52d16d2095d3dd2e2a96fb882fb Reviewed-on: https://gem5-review.googlesource.com/5501 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
2017-11-22sparc: Move integer StaticInst base classes out of the ISA desc.Gabe Black
Change-Id: I24008c1e2a94ad8dc4cc13739214928eb846a496 Reviewed-on: https://gem5-review.googlesource.com/5483 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Move the mem base classes out of the ISA description.Gabe Black
Change-Id: Ifbeee464e2d7f872e192f065ad3494f52d274596 Reviewed-on: https://gem5-review.googlesource.com/5482 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Move the microop/macroop base classes out of the ISA desc.Gabe Black
These were just raw C++ classes. Change-Id: Id2101400d885c6938efb6b94f2949722cfbb94ae Reviewed-on: https://gem5-review.googlesource.com/5481 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Return debug faults from unimplemented instructions.Gabe Black
These had been marked as non-speculative so that their execute functions would only be called if the instruction should really be executed. Instead, we can return faults which will cause the same behavior when the instruction is committed and let the instruction execute as normal. Change-Id: I39fa5073e93399424144724b99bdc12070e42286 Reviewed-on: https://gem5-review.googlesource.com/5465 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Pull the unimplemented formats out of the ISA description.Gabe Black
These are simple classes which don't need to be in the ISA description. Change-Id: Ia0bb45f50c4da2536855efcb3c17c7780b431332 Reviewed-on: https://gem5-review.googlesource.com/5464 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Pull the "Uknown" StaticInst class out of the ISA description.Gabe Black
The only thing the Unknown format does is return an instance of this class, so there's no reason to have it in the ISA description. Change-Id: I3f8187b1450a8622a974c030c0cb552b26f6b5f0 Reviewed-on: https://gem5-review.googlesource.com/5463 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Pull most of the Nop format out of the ISA description.Gabe Black
The Nop format mostly just made instructions that inherited from the Nop base class but with different mnemonics, so there doesn't need to be very much dynamic content. Change-Id: I1cf5e25ca8372f9b71f56d49756879c7545c9f6c Reviewed-on: https://gem5-review.googlesource.com/5462 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Pull more StaticInst base classes out of the ISA desc.Gabe Black
These are for the trap and branch instructions. Change-Id: Idedab6f3e6c6c954c1f8a36dae52976cf25ad394 Reviewed-on: https://gem5-review.googlesource.com/5461 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-22sparc: Pull flat static instruction classes out of the ISA.Gabe Black
These classes are just used as base classes for other instructions and don't need to be part of the ISA definition. Pull them into standard C++ files. Change-Id: If3e0bd82b1e676f20459bc0293fbda49de66b554 Reviewed-on: https://gem5-review.googlesource.com/5422 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-21arch-arm: ArmPMU refactorJose Marinho
Change the definition of PMU events in order to integrate events not cannot easily be represented by probe points. The software increment event is now defined as a special type with its separate implementation in pmu.cc and pmu.hh. Change-Id: I43874b9641bf38c54f6ba2c26386542b6a73e282 Signed-off-by: Jose Marinho <jose.marinho@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5764 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-21arch-arm: Do not increment PMU cycle event in WFI/WFEJose Marinho
Change-Id: I09531e9992e045254e5ee989dd11ccabbf84e4ce Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5763 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-21cpu, cpu, sim: move Cycle probe updateJose Marinho
Move the code responsible for performing the actual probe point notify into BaseCPU. Use BaseCPU activateContext and suspendContext to keep track of sleep cycles. Create a probe point (ppActiveCycles) that does not count cycles where the processor was asleep. Rename ppCycles to ppAllCycles to reflect its nature. Change-Id: I1907ddd07d0ff9f2ef22cc9f61f5f46c630c9d66 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5762 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-11-21sim: Fix need to save address space info during serialization.Austin Harris
This fixes a fatal already mapped error in FuncPageTable::allocate that occurs in some cases when restoring from a checkpoint. Change-Id: Ib726a69358118626663e42b7f14889b0d3a98de0 Reported-by: Ruohuang Zheng <zhengruohuang@gmail.com> Signed-off-by: Austin Harris <austinharris@utexas.edu> Reviewed-on: https://gem5-review.googlesource.com/5901 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2017-11-21scons: Build error introduced by site_tools/default.pyGiacomo Travaglini
One of the latest commits affecting the build system introduced a change in the environment setting: rather than using the ENV dictionary, environment key-val pairs were saved directly into the class. This patch reverts that behaviour. Change-Id: If206ba0a34ac8c35695a493cb90654b7ec81971b Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5941 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-21arch-arm: Fix MCR/MRC disassembleGiacomo Travaglini
This patch is fixing the Aarch32 MCR/MRC disassemble, which was previously printing unexisting integer registers as source/destination operands rather than the coprocessor register name Change-Id: I1937938c43680200cf6c5c9558e835ce2b209adc Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5862 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-21arch-arm: Fix MSR/MRS disassembleGiacomo Travaglini
This patch is fixing the Aarch64 MSR/MRS disassemble, which was previously printing unexisting integer registers as source/destination operands rather than the system register name Change-Id: Iac9d5f2f2fea85abd9a398320ef7aa4844d43c0e Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5861 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-21cpu-o3: Prevent cpu from suspending if it is already drainingNikos Nikoleris
Suspending the current thread context while draining due to a quiesce pseudo instruction (for example a wfi instruction) could deadlock the cpu and prevent it from successfully draining. This change ensures that the cpu is not draining before suspending the thread context. Change-Id: I7c019847f5a870d4bc9ce2b19936bc3dc45e5fd7 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5881 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-20arch-arm: Ensure counters keep events on checkpoint resumeJose Marinho
Events were not being attached to counters after a checkpoint resume. By not storing the enable private variable from the stored state the recreation of the event to counter association is automatically carried. The enable state is stored in the reg_pmcnten. Change-Id: I46344df0882a9050c900efb2e8996d64dbfbf297 Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5761 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-20cpu: Make automatic transition to OFF optionalJose Marinho
Add the power_gating_on_idle option to control whether a core automatically enters the power gated state. The default behaviour is to transition to clock gated when idle, but not to power gated. When this option is set to true, the core automatically transitions to the power gated state after a configurable latency. Change-Id: Ida98c7fc532de4140d0e511c25613769b47b3702 Reviewed-on: https://gem5-review.googlesource.com/5741 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-20pwr: Adds logic to enter power gating for the cpu modelAnouk Van Laer
If the CPU has been clock gated for a sufficient amount of time (configurable via pwrGatingLatency), the CPU will go into the OFF power state. This does not model hardware, just behaviour. Change-Id: Ib3681d1ffa6ad25eba60f47b4020325f63472d43 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/3969 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-20sparc: Pull StaticInst base classes out of the ISA description.Gabe Black
Also, do some minor refactoring to use a BitUnion to pull apart condition codes, etc. Change-Id: I0c88878b07a731d0c0fe30f264f53dd795db99ae Reviewed-on: https://gem5-review.googlesource.com/5421 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-11-20dev: Fix the SPARC and X86 platform devices.Gabe Black
A recent serial device refactoring changed the name of the parameter that the terminal device gets attached to on the UART. The x86 and SPARC platform devices didn't get updated though, and were still using the old name. This change updates those objects. Reported-by: Kanad Basu <kanad.kut@gmail.com> Change-Id: I0824a9df8639062d8561420ea9ffea26b8b7e2e9 Reviewed-on: https://gem5-review.googlesource.com/5781 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2017-11-19tests: Fix compilation of cprinftest.Gabe Black
This test has been broken since 70176fecd1ff04 in 2014. The problem was that the array size in the test was technically not constant because it was based on an int variable that wasn't declared as const. That prevented g++ from resolving it as a template parameter. Before the change mentioned above, the implementation wasn't based on templates. Change-Id: I6819cf522f9ba4636ac661da368b9bcbae0a813f Reviewed-on: https://gem5-review.googlesource.com/5821 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2017-11-17sim: Implement load_addr_mask auto-calculationGeoffrey Blake
Recent Linux kernels for AArch64 have changed their start addresses but we still want to relocate the kernel to 0x80080000 which required hacking the load_addr_mask in Realview.py to be 0x7ffffff from 0xfffffff to mask off the proper number of MSBs to load the kernel in the desired location. To avoid having to make this change in the future again, we auto-calculate the load_addr_mask if it is specified as 0x0 in the System sim-object to find the most restrictive address mask instead of having the configuration specify it. If the configuration does specify the address mask, we use it instead of auto-calculating. Change-Id: I18aabb5d09945c6e3e3819c9c8036ea24b6c35cf Signed-off-by: Geoffrey Blake <Geoffrey.Blake@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2323 Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-11-16system-arm: change system/arm/aarch64_bootloader/boot.S copyrightJose Marinho
The aarch64 boot loader was distributed using a BSD license that was using non-standard formatting. Updated the license to match gem5's canonical license format and removed the separete LICENSE.txt file. Change-Id: I660b73ca5ddd922763a2b72051c73d539248ebcf Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5728 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2017-11-16sim: ScopedMigration does nothing if both eqs are the sameTiago Muck
Added a check to avoid unlocking/locking the same event queue. Also, added an optional parameter to enable the migration to be skipped. This can be useful to disable the synchronization for certain runtime conditions. Change-Id: I4b03b3ffff4f9503153cd41dd8aa78705bf16cc4 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5730 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2017-11-16util: Add script to plot DRAM low power sweepRadhika Jagtap
This change adds a script to generate graphs from the stats file output by the configuration script low_power_sweep.py. The graphs show stacked bars for time spent and energy consumed wherein each component of the stacked bar represents a DRAM power state (Idle, Refresh, Active, Active Power-down, Precharge Power-down and Self-refresh). The script generates one plot per delay value. It also generates a pdf (--pdf option) in which the graphs are laid out such that you can easily compare how the increasing delay and other swept params affect the resulting energy. Change-Id: Id80b0947bfde27e11e5505b23a3adb30f793a43f Reviewed-by: Wendy Elsasser <wendy.elsasser@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5727 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-11-16tests: Add tests for DRAM low power modesRadhika Jagtap
This patch adds two regression tests that execute the script in the configs dir for triggering low power mode transitions. A separate test is required for each page policy because for close-adaptive page policy the DRAM goes into the Precharge Power-down mode while for open-adaptive page policy it goes into the Activate Power-down mode. Change-Id: Iad61af23f132db046f2857cc3ef64b2bf42cf5e4 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5726 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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