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There are times when we need to change the name of parameter, but this breaks the external-facing python API used in configuration files. Using this "type" for a parameter will warn users that they are using the old name, but allow for backwards compatibility. Declaring a SimObject parameter of type `DeprecatedParam` allows the python configuration files to use the old name transparently. This leverages some of the SimObject magic to remember the names of deprecated parameters and the DeprecatedParam object stores the "translation" from old name to new name. This has been tested with Ports, "normal" parameters, and SimObject parameters. It has not been tested with checkpointing as there are no checkpointing tests in gem5 right now. The testing was manually adding some deprecated params and checking that config scripts still run correctly that use the old, deprecated, variables. Change-Id: I0465a748c08a24278d6b1a9d9ee1bcd67baa5b13 Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31954 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, SWIG, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of the aforementioned tools. Once you have all dependencies resolved, type 'scons build/<ARCH>/gem5.opt' where ARCH is one of ARM, NULL, MIPS, POWER, SPARC, or X86. This will build an optimized version of the gem5 binary (gem5.opt) for the the specified architecture. See http://www.gem5.org/documentation/general_docs/building for more details and options. The basic source release includes these subdirectories: - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you will need compiled system firmware (console and PALcode for Alpha), kernel binaries and one or more disk images. If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.