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Abdul Mutaal Ahmad 1051223318 misc: Separate stats file for SystemC-gem5 co-simulation 
In previous versions of systemC-gem5 coupling statistics were not updated
for the systemc-gem5 simulation. systemC-gem5 simulation only need the
previously built config.ini file and normal gem5 simulation has to be run
once to generate config.ini file. Thus stats.txt inside the m5out folder is
redundant for systemC-gem5 simulation. A new stats file is now generated
with the all the statistics for systemC-gem5 simulation. This will also
resolve the stats issue in tlm-sysmtemC simulation.

Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01 09:30:15 -05:00
..
main.cc misc: Separate stats file for SystemC-gem5 co-simulation 2016-07-01 09:30:15 -05:00
Makefile config: Fix to SystemC example's event handling 2014-12-02 06:08:09 -05:00
README sim: SystemC hosting 2014-10-16 05:49:54 -04:00
sc_gem5_control.cc base: remove Trace::enabled flag 2015-09-30 15:21:55 -05:00
sc_gem5_control.hh config: SystemC Gem5Control top level additions 2014-12-02 06:08:06 -05:00
sc_logger.cc config: Fix to SystemC example's event handling 2014-12-02 06:08:09 -05:00
sc_logger.hh sim: SystemC hosting 2014-10-16 05:49:54 -04:00
sc_module.cc misc: Bugfix for Freezing Terminal in SystemC Simulation 2015-09-15 08:14:07 -05:00
sc_module.hh config: Fix to SystemC example's event handling 2014-12-02 06:08:09 -05:00
stats.cc misc: Separate stats file for SystemC-gem5 co-simulation 2016-07-01 09:30:15 -05:00
stats.hh misc: Separate stats file for SystemC-gem5 co-simulation 2016-07-01 09:30:15 -05:00

README 

This directory contains a demo of C++ configuration of gem5.  The intention
is to provide a mechanism to allow pre-generated config.ini files generated
by Python-based gem5 to be reloaded in library-base versions of gem5
embedded in other systems using C++ calls for simulation control.

This directory contain a demo of hosting a C++ configured version of gem5
onto SystemC's event loop.  The hosting is achieved by replacing 'simulate'
with a SystemC object which implements an event loop using SystemC scheduler
mechanisms.

The sc_... files here should probably be hosted in a diferent directory and
buildable as a library.

Files:

    main.cc                 -- demonstration top level
    sc_logger.{cc,hh}       -- rehosting of DPRINTF onto SC_REPORT
    sc_module.{cc,hh}       -- SystemC simulation loop base class
    sc_gem5_control.{cc,hh} -- Alternative extra wrapping to allow gem5
                                Systems to be instantiated as single
                                sc_module objects.
    stats.{cc,hh}           -- Stats dumping (copied from util/cxx_config)

Read main.cc for more details of the implementation and sc_... files for

To build:

First build gem5 as a library with cxx-config support and (optionally)
without python.  Also build a normal gem5 (cxx-config not needed, Python
needed):

> cd ../..
> scons build/ARM/gem5.opt
> scons --with-cxx-config --without-python build/ARM/libgem5_opt.so
> cd util/cxx_config

Then edit Makefile to set the paths for SystemC and run make

> make

Make a config file for the C++-configured gem5 using normal gem5

> ../../build/ARM/gem5.opt ../../configs/example/se.py -c \
>       ../../tests/test-progs/hello/bin/arm/linux/hello

The binary 'gem5.opt.cxx' can now be used to load in the generated config
file from the previous normal gem5 run.

Try:

> ./gem5.opt.cxx m5out/config.ini

This should print:

> Hello world!

The .ini file can also be read by the Python .ini file reader example:

> ../../build/ARM/gem5.opt ../../configs/example/read_ini.py m5out/config.ini