tests: Add a nightly test for SST integration.

This test includes,
- A dockerfile creating a Docker image containing SST-Core
and SST-Elements installed. The image also contains the
bbl-busybox-boot-exit binary from gem5-resources.
- A nightly test involving compiling gem5 as a library, and
booting a linux kernel without a disk image using SST where
gem5 TimingSimpleCPU is the CPU core.

Change-Id: I2bf90b4121ed0d38300451648f2e358a7c3fffe2
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52564
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

tests/nightly.sh

@@ -128,3 +128,19 @@ docker run --rm -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
     "${gem5_root}" gcr.io/gem5-test/gcn-gpu:latest build/GCN3_X86/gem5.opt \
     configs/example/apu_se.py --reg-alloc-policy=dynamic -n3 -c \
     allSyncPrims-1kernel --options="lfTreeBarrUniq 10 16 4"
+
+# Run an SST test.
+build_and_run_SST () {
+    isa=$1
+    variant=$2
+
+    docker run -u $UID:$GID --volume "${gem5_root}":"${gem5_root}" -w \
+        "${gem5_root}" --rm gcr.io/gem5-test/sst-env \
+            bash -c "\
+scons build/${isa}/libgem5_${variant}.so -j${compile_threads} --without-tcmalloc; \
+cd ext/sst; \
+make clean; make -j ${compile_threads}; \
+sst --add-lib-path=./ sst/example.py; \
+"
+}
+build_and_run_SST RISCV opt

util/dockerfiles/sst-11.1.0/Dockerfile

@@ -0,0 +1,66 @@
+# Copyright (c) 2021 The Regents of the University of California
+# All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM ubuntu:20.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt -y update
+RUN apt -y upgrade
+RUN apt -y install build-essential git m4 scons zlib1g zlib1g-dev \
+    libprotobuf-dev protobuf-compiler libprotoc-dev libgoogle-perftools-dev \
+    python3-dev python3-six python-is-python3 doxygen libboost-all-dev \
+    libhdf5-serial-dev python3-pydot libpng-dev libelf-dev pkg-config pip \
+    python3-venv wget
+
+ENV SST_CORE_HOME="/sst/"
+
+# SST Stuff
+RUN mkdir /sst
+
+# Download and build SST-Core without MPI support
+WORKDIR /sst/
+RUN wget https://github.com/sstsimulator/sst-core/releases/download/v11.1.0_Final/sstcore-11.1.0.tar.gz; \
+    tar xf sstcore-11.1.0.tar.gz;
+WORKDIR /sst/sstcore-11.1.0/
+RUN ./configure --prefix=$SST_CORE_HOME --with-python=/usr/bin/python3-config \
+                                        --disable-mpi; \
+    make all -j $(nproc); \
+    make install;
+
+# Download and build SST-Elements
+WORKDIR /sst
+RUN wget https://github.com/sstsimulator/sst-elements/releases/download/v11.1.0_Final/sstelements-11.1.0.tar.gz; \
+    tar xf sstelements-11.1.0.tar.gz;
+WORKDIR /sst/sst-elements-library-11.1.0/
+RUN ./configure --prefix=$SST_CORE_HOME --with-python=/usr/bin/python3-config \
+                                        --with-sst-core=$SST_CORE_HOME; \
+    make all -j $(nproc); \
+    make install;
+
+# Setting the environmental variables
+ENV PATH=$PATH:$SST_CORE_HOME/bin
+ENV PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$SST_CORE_HOME/lib/pkgconfig/
+