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Brandon Potter d3d983caf9 syscall_emul: [patch 10/22] refactor fdentry and add fdarray class 
Several large changes happen in this patch.

The FDEntry class is rewritten so that file descriptors now correspond to
types: 'File' which is normal file-backed file with the file open on the
host machine, 'Pipe' which is a pipe that has been opened on the host machine,
and 'Device' which does not have an open file on the host yet acts as a pseudo
device with which to issue ioctls. Other types which might be added in the
future are directory entries and sockets (off the top of my head).

The FDArray class was create to hold most of the file descriptor handling
that was stuffed into the Process class. It uses shared pointers and
the std::array type to hold the FDEntries mentioned above.

The changes to these two classes needed to be propagated out to the rest
of the code so there were quite a few changes for that. Also, comments were
added where I thought they were needed to help others and extend our
DOxygen coverage.
2016-11-09 14:27:42 -06:00
build_opts riscv: [Patch 5/5] Added missing support for timing CPU models 2016-11-30 17:10:28 -05:00
configs arm,config: Add dist-gem5 support to the big.LITTLE(tm) config 2017-02-14 15:36:15 -06:00
ext misc: Update #!env calls for python to explicit version 2017-02-10 10:00:18 -05:00
src syscall_emul: [patch 10/22] refactor fdentry and add fdarray class 2016-11-09 14:27:42 -06:00
system arm, config: Add an example ARM big.LITTLE(tm) configuration script 2016-07-21 17:19:16 +01:00
tests mem: Update DRAM configuration names 2017-02-14 15:09:18 -06:00
util sim: allow forward dependencies in checkpoint upgraders 2017-02-14 15:09:18 -06:00
.gitignore misc: Add a gitignore file based on the current hgignore 2016-03-16 17:20:00 +00:00
.hgignore misc: ignore object files and static libs in util/m5 2015-11-13 17:03:48 -05:00
.hgtags Added tag stable_2015_09_03 for changeset 60eb3fef9c2d 2015-09-03 15:38:46 -05:00
COPYING mem: Add memory footprint probe 2017-01-27 14:58:15 -06:00
LICENSE copyright: Add code for finding all copyright blocks and create a COPYING file 2011-06-02 17:36:07 -07:00
README misc: README direct to website for dependencies 2014-08-26 10:12:04 -04:00
SConstruct scons: make build better on FreeBSD 2017-02-09 19:00:00 -05:00

README 

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.