110458Sandreas.hansson@arm.comThis directory contains a demo of C++ configuration of gem5. The intention 210458Sandreas.hansson@arm.comis to provide a mechanism to allow pre-generated config.ini files generated 310458Sandreas.hansson@arm.comby Python-based gem5 to be reloaded in library-base versions of gem5 410458Sandreas.hansson@arm.comembedded in other systems using C++ calls for simulation control. 510458Sandreas.hansson@arm.com 610458Sandreas.hansson@arm.comThis demo implements a few of the simulation control mechanisms of the Python 710458Sandreas.hansson@arm.comgem5 on top of a C++ configured system. 810458Sandreas.hansson@arm.com 910458Sandreas.hansson@arm.comRead main.cc for more details of the implementation. 1010458Sandreas.hansson@arm.com 1110458Sandreas.hansson@arm.comTo build: 1210458Sandreas.hansson@arm.com 1310458Sandreas.hansson@arm.comFirst build gem5 as a library with cxx-config support and (optionally) 1410458Sandreas.hansson@arm.comwithout python. Also build a normal gem5 (cxx-config not needed, Python 1510458Sandreas.hansson@arm.comneeded): 1610458Sandreas.hansson@arm.com 1710458Sandreas.hansson@arm.com> cd ../.. 1810458Sandreas.hansson@arm.com> scons build/ARM/gem5.opt 1910458Sandreas.hansson@arm.com> scons --with-cxx-config --without-python build/ARM/libgem5_opt.so 2010458Sandreas.hansson@arm.com> cd util/cxx_config 2110458Sandreas.hansson@arm.com 2211791Sjungma@eit.uni-kl.deNote: For MAC / OSX this command should be used: 2311791Sjungma@eit.uni-kl.de> scons --with-cxx-config --without-python build/ARM/libgem5_opt.dylib 2411791Sjungma@eit.uni-kl.de 2511791Sjungma@eit.uni-kl.deSet a proper LD_LIBRARY_PATH e.g. for bash: 2611791Sjungma@eit.uni-kl.de> export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/path/to/gem5/build/ARM/" 2711791Sjungma@eit.uni-kl.de 2811791Sjungma@eit.uni-kl.deor for MAC / OSX: 2911791Sjungma@eit.uni-kl.de> export DYLD_LIBRARY_PATH="$DYLD_LIBRARY_PATH:/path/to/gem5/build/ARM/" 3011791Sjungma@eit.uni-kl.de 3110458Sandreas.hansson@arm.comThen edit Makefile to set the paths for PYTHON and run make 3210458Sandreas.hansson@arm.com 3310458Sandreas.hansson@arm.com> make 3410458Sandreas.hansson@arm.com 3510458Sandreas.hansson@arm.comMake a config file for the C++-configured gem5 using normal gem5 3610458Sandreas.hansson@arm.com 3710458Sandreas.hansson@arm.com> ../../build/ARM/gem5.opt ../../configs/example/se.py -c \ 3810458Sandreas.hansson@arm.com> ../../tests/test-progs/hello/bin/arm/linux/hello 3910458Sandreas.hansson@arm.com 4010458Sandreas.hansson@arm.comThe binary 'gem5.opt.cxx' can now be used to load in the generated config 4110458Sandreas.hansson@arm.comfile from the previous normal gem5 run. 4210458Sandreas.hansson@arm.com 4310458Sandreas.hansson@arm.comTry: 4410458Sandreas.hansson@arm.com 4510458Sandreas.hansson@arm.com> ./gem5.opt.cxx m5out/config.ini 4610458Sandreas.hansson@arm.com 4710458Sandreas.hansson@arm.comThis should print: 4810458Sandreas.hansson@arm.com 4910458Sandreas.hansson@arm.com> Hello world! 5010458Sandreas.hansson@arm.com 5110458Sandreas.hansson@arm.comThe .ini file can also be read by the Python .ini file reader example: 5210458Sandreas.hansson@arm.com 5310458Sandreas.hansson@arm.com> ../../build/ARM/gem5.opt ../../configs/example/read_config.py m5out/config.ini 54