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System calls should now be requested from the workload directly and not routed through ExecContext or ThreadContext interfaces. That removes a major special case for SE mode from those interfaces. For now, when the SE workload gets a request for a system call, it dispatches it to the appropriate Process object. In the future, the ISA specific Workload subclasses will be responsible for handling system calls and not the Process classes. For simplicity, the Workload syscall() method is defined in the base class but will panic everywhere except when SEWorkload overrides it. In the future, this mechanism will turn into a way to request generic services from the workload which are not necessarily system calls. For instance, it could be a way to request handling of a page fault without having to have another PseudoInst just for that purpose. Change-Id: I18d36d64c54adf4f4f17a62e7e006ff2fc0b22f1 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33282 Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Maintainer: Gabe Black <gabeblack@google.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.