Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/README

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+This is the M5 simulator.
+
+For detailed information about building the simulator and getting
+started please refer to http://www.m5sim.org.
+
+Specific pages of interest are:
+http://www.m5sim.org/wiki/index.php/Compiling_M5
+http://www.m5sim.org/wiki/index.php/Running_M5
+
+Short version:
+
+1. If you don't have SCons version 0.98.1 or newer, get it from
+http://wwww.scons.org.
+
+2. If you don't have SWIG version 1.3.31 or newer, get it from
+http://wwww.swig.org.
+
+3. Make sure you also have gcc version 3.4.6 or newer, Python 2.4 or newer
+(the dev version with header files), zlib, and the m4 preprocessor.
+
+4. In this directory, type 'scons build/ALPHA_SE/tests/debug/quick'.  This
+will build the debug version of the m5 binary (m5.debug) for the Alpha
+syscall emulation target, and run the quick regression tests on it.
+
+If you have questions, please send mail to m5-users@m5sim.org
+
+WHAT'S INCLUDED (AND NOT)
+-------------------------
+
+The basic source release includes these subdirectories:
+ - m5:
+   - configs: simulation configuration scripts
+   - ext: less-common external packages needed to build m5
+   - src: source code of the m5 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. 
+These files for Alpha are collected in a separate archive, m5_system.tar.bz2.
+This file can he downloaded separately.
+
+Depending on the ISA used, M5 may support Linux 2.4/2.6, FreeBSD, and the
+proprietary Compaq/HP Tru64 version of Unix. We are able to distribute Linux
+and FreeBSD bootdisks, but we are unable to distribute bootable disk images of
+Tru64 Unix. If you have a Tru64 license and are interested in
+obtaining disk images, contact us at m5-users@m5sim.org