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This will eventually let subclasses provide their own appropriately sized storage for these indexes. By using a pointer to member instead of a regular pointer, we ensure that even if the StaticInst is copied/moved somewhere, it will still find its indexes correctly, without any additional performance overhead or maintenance. Unfortunately C++ has decided that arrays with known bounds are not convertible/compatible with arrays with unknown bounds. I've found at least two standards proposals in various stages of acceptance which say that that's dumb and they should change that (because it's dumb and they should change that), but in the mean time we can get everything to compile by using the reinterpret_cast hammer. While this is *technically* undefined behavior, it's basically not and should be pretty safe. Change-Id: Id747b0cf68d1a0b4809ebb66a32472187110d7d8 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36876 Maintainer: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.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.