2600ac281e
Now that 64-bit registers and operands are being used, the instructions for words must read or write just one word at a time. This fixes the following instructions. * Load Word and Zero (lwz) * Load Word and Zero Indexed (lwzx) * Load Word and Zero with Update (lwzu) * Load Word and Zero with Update Indexed (lwzux) * Load Word And Reserve Indexed (lwarx) * Store Word (stw) * Store Word Indexed (stwx) * Store Word with Update (stwu) * Store Word with Update Indexed (stwux) * Store Word Conditional Indexed (stwcx.) This also fixes decoding of load-store update instructions for some special scenarios when RA is zero or RA and RT are the same. In such cases, the instruction is considered invalid. Change-Id: I6787d3614ba8f1b1cbf30a49f85ef422324d7c21 Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40893 Reviewed-by: Boris Shingarov <shingarov@labware.com> Maintainer: Jason Lowe-Power <power.jg@gmail.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.