af5a23a39f
This is done by implementing the Xfer:features:read packet of the GDB remote protocol. Before this commit, gem5 used the defaults of the GDB client. With this commit, gem5 can inform the client which registers it knows about. This allows in particular to support new registers which an older GDB client does not yet know about. The XML is not implemented in this commit for any arch, and falls back almost exactly to previous behaviour. The only change is that now gem5 replies to the Supported: request which the GDB clients sends at the beginning of the transaction with an empty feature list containing only the mandatory PacketSize= argument. Since the feature list does not contain qXfer:features:read, the GDB client knows that the gem5 server does support the XML format and uses its default registers as before. Change-Id: I5185f28b00e9b9cc8245f4b4262cc324c3d298c1 Reviewed-on: https://gem5-review.googlesource.com/c/15137 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@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/Introduction, and for more information about building the simulator and getting started please see http://www.gem5.org/Documentation and http://www.gem5.org/Tutorials. 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/Dependencies 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 ALPHA, 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/Build_System for more details and options. With the simulator built, have a look at http://www.gem5.org/Running_gem5 for more information on how to use gem5. 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. Please see the gem5 download page for these items at http://www.gem5.org/Download If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.