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The InstResult class is always used to store a register value, and also only used to store a RegVal and not any more complex type like a VecRegContainer. This is partially because the methods that *would* store a complex result only have a pointer to work with, and don't have a type to cast to to store the result in the InstResult. This change reworks the InstResult class to hold the RegClass the register goes with, and also either a standard RegVal, or a pointer to a blob of memory holding the actual value if RegVal isn't appropriate. If the InstResult has no RegClass, it is considered invalid. To make working with InstResult easier, it also now has an "asString" method which will just call into the RegClass's valString method with the appropriate pointer. By removing the ultimately unnecessary generality of the original class, this change also simplifies InstResult significantly. Change-Id: I71ace4da6c99b5dd82757e5365c493d795496fe5 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50253 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, 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 these tools. Once you have all dependencies resolved, type 'scons build/<CONFIG>/gem5.opt' where CONFIG is one of the options in build_opts like ARM, NULL, MIPS, POWER, SPARC, X86, Garnet_standalone, etc. This will build an optimized version of the gem5 binary (gem5.opt) with the the specified configuration. See http://www.gem5.org/documentation/general_docs/building for more details and options. The main source tree includes these subdirectories: - build_opts: pre-made default configurations for gem5 - build_tools: tools used internally by gem5's build process. - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - include: include files for use in other programs - site_scons: modular components of the build system - 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 may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of those resources can be downloaded from http://resources.gem5.org, and/or from the git repository here: https://gem5.googlesource.com/public/gem5-resources/ If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.