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2018-09-10base: Fix isSubset() for addr ranges with interleavingNikos Nikoleris
This change extends isSubset() which checks whether the range is a subset of an input range to support address ranges with interleaving and hashing. Change-Id: I3dc9ceccb189b7c8665de0355f0555fc2c37d872 Reviewed-on: https://gem5-review.googlesource.com/12319 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2018-06-28base: Add an asymmetrical Coroutine classGiacomo Travaglini
This patch is providing gem5 a Coroutine class to be used for instantiating asymmetrical coroutines. Coroutines are built on top of gem5 fibers, which makes them ucontext based. Change-Id: I7bb673a954d4a456997afd45b696933534f3e239 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/11195 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-06-21base: Add a class which encapsulates Fibers.Gabe Black
This class encapsulates the idea of a Fiber in such a way that other implementations can be substituted in in the future. This implementation uses the ucontext family of functions. This change also adds a new unit test which exercises the new class. It creates three new fibers which accept a sequence of other fibers to switch to, one after the other. The main test function switches to the these fibers which switch with each other and occasionally back to the main fiber. Each time a test fiber is activated, it checks against a list which shows the correct order for the fibers to run in. When the main fiber gets control, it makes sure that list has been progressed through by the correct amount. Change-Id: I1fc2afa414b51baaa91e350a4ebc791d989f0b8a Reviewed-on: https://gem5-review.googlesource.com/10935 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2017-12-13arm,sparc,x86,base,cpu,sim: Replace the Twin(32|64)_t types with.Gabe Black
Replace them with std::array<>s. Change-Id: I76624c87a1cd9b21c386a96147a18de92b8a8a34 Reviewed-on: https://gem5-review.googlesource.com/6602 Maintainer: Gabe Black <gabeblack@google.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-12-12tests: Turn fbtest into a gtest and move it to src/base.Gabe Black
Change-Id: I9ca57e24f27e0eb747d1f27262972a8abcd10fc8 Reviewed-on: https://gem5-review.googlesource.com/6342 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-12-12tests: Move the cprintftest unit test into src/base.Gabe Black
That way it will live alongside the code it tests. Change-Id: I00baad2206870a4619b7cee792a1d4c303dad04d Reviewed-on: https://gem5-review.googlesource.com/6324 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-12-12tests: Move the trietest unit test into base.Gabe Black
This puts it alongside trie.hh, the header file it tests. Change-Id: Id8ca0c1d68bdc01807c5ba4b51c0142b1221385d Reviewed-on: https://gem5-review.googlesource.com/6281 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
2017-12-12tests: Add an implementation of the Logger interface for use gtests.Gabe Black
On exiting log types (panic and fatal), the message is set to an ADD_FAILURE_AT macro, and the test is exited by throwing an otherwise unexpected exception. On non-exiting log types, the message is sent to the SUCCEEDED macro which currently doesn't output anything. Change-Id: I1bb569e6cb8308dbc4c3e04eea7a962bd2b1ddd8 Reviewed-on: https://gem5-review.googlesource.com/6264 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2017-12-06base: Split out the pixel class in framebuffer.(cc|hh).Gabe Black
These are really two separate things. Also, while it's realitively straightforward to write a unit test for the pixel conversion code, the framebuffer object is serializable and brings in more dependencies. Change-Id: If954caeb0bfedb1002cfb1a7a115a00c90d56d19 Reviewed-on: https://gem5-review.googlesource.com/6341 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-12-04misc: Rename misc.(hh|cc) to logging.(hh|cc)Gabe Black
These files aren't a collection of miscellaneous stuff, they're the definition of the Logger interface, and a few utility macros for calling into that interface (panic, warn, etc.). Change-Id: I84267ac3f45896a83c0ef027f8f19c5e9a5667d1 Reviewed-on: https://gem5-review.googlesource.com/6226 Reviewed-by: Brandon Potter <Brandon.Potter@amd.com> Maintainer: Gabe Black <gabeblack@google.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>
2017-10-31base: Introducing utility for writing raw data in png formatGiacomo Travaglini
Originally it was possible to use a Bitmap writer class for dumping a framebuffer snapshot in a .bmp file. This patch enables you to choose another format. In particular it implements the writing of PNG Images using libpng library. The latter has to be already installed in your machine, otherwise gem5 will default to the Bitmap format. This configurable writer has been introduced in the VNC frame dumping mechanism, which is storing changed frame buffers from the VNC server Change-Id: Id7e5763c82235f1ce90381c8486b85a7cce734ce Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5181 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-10-20base: Function for mirroring bits in variable length wordGiacomo Travaglini
This patch introduces a high-speed template function for mirroring the bits (MSB=>LSB) in a variable length word. The function is achieving high performances since it is using a look-up table. Change-Id: Ib0d0480e68d902f25655f74d243de305103eff75 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5261 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2015-08-07base: Rewrite the CircleBuf to fix bugs and add serializationAndreas Sandberg
The CircleBuf class has at least one bug causing it to overwrite the wrong elements when wrapping. The current code has a lot of unused functionality and duplicated code. This changeset replaces the old implementation with a new version that supports serialization and arbitrary types in the buffer (not just char).
2015-05-23base: Redesign internal frame buffer handlingAndreas Sandberg
Currently, frame buffer handling in gem5 is quite ad hoc. In practice, we pass around naked pointers to raw pixel data and expect consumers to convert frame buffers using the (broken) VideoConverter. This changeset completely redesigns the way we handle frame buffers internally. In summary, it fixes several color conversion bugs, adds support for more color formats (e.g., big endian), and makes the code base easier to follow. In the new world, gem5 always represents pixel data using the Pixel struct when pixels need to be passed between different classes (e.g., a display controller and the VNC server). Producers of entire frames (e.g., display controllers) should use the FrameBuffer class to represent a frame. Frame producers are expected to create one instance of the FrameBuffer class in their constructors and register it with its consumers once. Consumers are expected to check the dimensions of the frame buffer when they consume it. Conversion between the external representation and the internal representation is supported for all common "true color" RGB formats of up to 32-bit color depth. The external pixel representation is expected to be between 1 and 4 bytes in either big endian or little endian. Color channels are assumed to be contiguous ranges of bits within each pixel word. The external pixel value is scaled to an 8-bit internal representation using a floating multiplication to map it to the entire 8-bit range.
2014-09-03base: Use STL C++11 random number generationAndreas Hansson
This patch changes the random number generator from the in-house Mersenne twister to an implementation relying entirely on C++11 STL. The format for the checkpointing of the twister is simplified. As the functionality was never used this should not matter. Note that this patch does not actually make use of the checkpointing functionality. As the random number generator is not thread safe, it may be sensible to create one generator per thread, system, or even object. Until this is decided the status quo is maintained in that no generator state is part of the checkpoint.
2014-08-10base: Remove unused filesAndreas Hansson
A bit of pruning
2013-09-04arch: Resurrect the NOISA build target and rename it NULLAndreas Hansson
This patch makes it possible to once again build gem5 without any ISA. The main purpose is to enable work around the interconnect and memory system without having to build any CPU models or device models. The regress script is updated to include the NULL ISA target. Currently no regressions make use of it, but all the testers could (and perhaps should) transition to it. --HG-- rename : build_opts/NOISA => build_opts/NULL rename : src/arch/noisa/SConsopts => src/arch/null/SConsopts rename : src/arch/noisa/cpu_dummy.hh => src/arch/null/cpu_dummy.hh rename : src/cpu/intr_control.cc => src/cpu/intr_control_noisa.cc
2013-02-15loader: add a flattened device tree blob (dtb) objectAnthony Gutierrez
this adds a dtb_object so the loader can load in the dtb file for linux/android ARM kernels.
2013-02-10ruby: replace Time with Cycles in Message classNilay Vaish
Concomitant changes are being committed as well, including the io operator<< for the Cycles class.
2012-09-19AddrRange: Simplify Range by removing stream input/outputAndreas Hansson
This patch simplifies the Range class in preparation for the introduction of a more specific AddrRange class that allows interleaving/striping. The only place where the parsing was used was in the unit test.
2012-06-05sim: Remove FastAllocAli Saidi
While FastAlloc provides a small performance increase (~1.5%) over regular malloc it isn't thread safe. After removing FastAlloc and using tcmalloc I've seen a performance increase of 12% over libc malloc when running twolf for ARM.
2011-06-02scons: rename TraceFlags to DebugFlagsNathan Binkert
2011-05-12stats: delete mysql supportNathan Binkert
we can add it back within python in some future changeset
2011-05-12stats: move code that loops over all stats into pythonNathan Binkert
2011-02-11VNC: Add VNC server to M5Ali Saidi
2011-01-03Delete unused files from src/base directory.Steve Reinhardt
2010-11-19SCons: Support building without an ISAAli Saidi
2010-06-14stats: get rid of the never-really-used event stuffNathan Binkert
2010-04-18callback: Make helper functions that create callback objects for youNathan Binkert
clean up callback stuff a little bit while we're at it.
2009-02-26CPA: Add new object for gathering critical path annotations.Ali Saidi
2009-02-23stats: get rid of the convoluted 'database' code.Nathan Binkert
Just use the stuff directly and things ought to be more clear
2009-02-23debug: Move debug_break into src/baseNathan Binkert
2009-01-19tracing: Add help strings for some of the trace flagsNathan Binkert
2008-09-19atomicio: provide atomic read and write functions.Nathan Binkert
These functions keep trying to read and write until all data has been transferred, or an error occurrs. In the case where an end of file hasn't been reached, but all of the bytes have not been read/written, try again. On EINTR, try again.
2007-11-13Add in files from merge-bare-iron, get them compiling in FS and SE modeKorey Sewell
--HG-- extra : convert_revision : d4e19afda897bc3797868b40469ce2ec7ec7d251
2007-10-31Traceflags: Add SCons function to created a traceflag instead of having one ↵Ali Saidi
file with them all. --HG-- extra : convert_revision : 427f6bd8f050861ace3bc0d354a1afa5fc8319e6
2007-10-31Base: Rework the way M5 provides and creates random numbers.Ali Saidi
--HG-- extra : convert_revision : 10ec3484647b3acb8e821f8520f97d535e41e861
2007-06-09only compile fenv.c if we're using fenvNathan Binkert
--HG-- extra : convert_revision : 990726f724f99505fc999af82bfb1bbcd6c7f1a2
2007-04-21create base/fenv.c to standerdize fenv across platforms. It's a c file and ↵Ali Saidi
not a cpp file because c99 (which defines fenv) doesn't necessarily extend to c++ and it is a problem with solaris. If really desired this could wrap the ieeefp interface found in bsd* as well, but I see no need at the moment. src/arch/alpha/isa/fp.isa: src/arch/sparc/isa/formats/basic.isa: use m5_fesetround()/m5_fegetround() istead of fenv interface directly src/arch/sparc/isa/includes.isa: use base/fenv instead of fenv directly src/base/SConscript: add fenv to sconscript src/base/fenv.hh: src/base/random.cc: m5 implementation to standerdize fenv across platforms. --HG-- extra : convert_revision : 38d2629affd964dcd1a5ab0db4ac3cb21438e72c
2007-04-12Completely re-work how the scons framework incorporates swigNathan Binkert
and python code into m5 to allow swig an python code to easily added by any SConscript instead of just the one in src/python. This provides SwigSource and PySource for adding new files to m5 (similar to Source for C++). Also provides SimObject for including files that contain SimObject information and build the m5.objects __init__.py file. --HG-- extra : convert_revision : 38b50a0629846ef451ed02f96fe3633947df23eb
2007-03-26Instead of creating a new python process to run traceflags.py,Nathan Binkert
just directly exec the file and generate the flags --HG-- extra : convert_revision : d648ca7348404ded5337db327adafccbd2ae40c8
2007-03-10Rework the way SCons recurses into subdirectories, making itNathan Binkert
automatic. The point is that now a subdirectory can be added to the build process just by creating a SConscript file in it. The process has two passes. On the first pass, all subdirs of the root of the tree are searched for SConsopts files. These files contain any command line options that ought to be added for a particular subdirectory. On the second pass, all subdirs of the src directory are searched for SConscript files. These files describe how to build any given subdirectory. I have added a Source() function. Any file (relative to the directory in which the SConscript resides) passed to that function is added to the build. Clean up everything to take advantage of Source(). function is added to the list of files to be built. --HG-- extra : convert_revision : 103f6b490d2eb224436688c89cdc015211c4fd30
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