10 files changed, 699 insertions, 0 deletions
diff --git a/src/systemc/channel/SConscript b/src/systemc/channel/SConscript
new file mode 100644
index 000000000..3ca8801c8
--- /dev/null
+++ b/src/systemc/channel/SConscript
@@ -0,0 +1,39 @@
+# Copyright 2018 Google, Inc.
+#
+# 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.
+#
+# Authors: Gabe Black
+
+Import('*')
+
+if env['USE_SYSTEMC']:
+    Source('sc_clock.cc')
+    Source('sc_event_queue.cc')
+    Source('sc_in_resolved.cc')
+    Source('sc_inout_resolved.cc')
+    Source('sc_out_resolved.cc')
+    Source('sc_mutex.cc')
+    Source('sc_semaphore.cc')
+    Source('sc_signal_resolved.cc')
+    Source('warn_unimpl.cc')
diff --git a/src/systemc/channel/sc_clock.cc b/src/systemc/channel/sc_clock.cc
new file mode 100644
index 000000000..ac1d3369a
--- /dev/null
+++ b/src/systemc/channel/sc_clock.cc
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_clock.hh"
+#include "systemc/ext/core/sc_module.hh" // for sc_gen_unique_name
+
+namespace sc_core
+{
+
+sc_clock::sc_clock() :
+        sc_interface(), sc_signal<bool>(sc_gen_unique_name("clock"))
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_clock::sc_clock(const char *name) : sc_interface(), sc_signal<bool>(name)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_clock::sc_clock(const char *name, const sc_time &period,
+                   double duty_cycle, const sc_time &start_time,
+                   bool posedge_first)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_clock::sc_clock(const char *name, double period_v, sc_time_unit period_tu,
+                   double duty_cycle)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_clock::sc_clock(const char *name, double period_v, sc_time_unit period_tu,
+                   double duty_cycle, double start_time_v,
+                   sc_time_unit start_time_tu, bool posedge_first)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_clock::~sc_clock() {}
+
+void
+sc_clock::write(const bool &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+const sc_time &
+sc_clock::period() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *(const sc_time *)nullptr;
+}
+
+double
+sc_clock::duty_cycle() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0.0;
+}
+
+const sc_time &
+sc_clock::start_time() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *(const sc_time *)nullptr;
+}
+
+bool
+sc_clock::posedge_first() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return false;
+}
+
+const char *sc_clock::kind() const { return "sc_clock"; }
+
+void sc_clock::before_end_of_elaboration() {}
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_event_queue.cc b/src/systemc/channel/sc_event_queue.cc
new file mode 100644
index 000000000..47485fdc0
--- /dev/null
+++ b/src/systemc/channel/sc_event_queue.cc
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_event_queue.hh"
+
+namespace sc_core
+{
+
+sc_event_queue::sc_event_queue(sc_module_name name) :
+        sc_interface(), sc_event_queue_if(), sc_module(name)
+{}
+
+sc_event_queue::~sc_event_queue() {}
+
+const char *sc_event_queue::kind() const { return "sc_event_queue"; }
+
+void
+sc_event_queue::notify(double, sc_time_unit)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+void
+sc_event_queue::notify(const sc_time &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+void
+sc_event_queue::cancel_all()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+const sc_event &
+sc_event_queue::default_event() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *(const sc_event *)nullptr;
+}
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_in_resolved.cc b/src/systemc/channel/sc_in_resolved.cc
new file mode 100644
index 000000000..b57f4cd7d
--- /dev/null
+++ b/src/systemc/channel/sc_in_resolved.cc
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_in_resolved.hh"
+
+namespace sc_core
+{
+
+sc_in_resolved::sc_in_resolved() : sc_in<sc_dt::sc_logic>() {}
+
+sc_in_resolved::sc_in_resolved(const char *name) :
+        sc_in<sc_dt::sc_logic>(name)
+{}
+
+sc_in_resolved::~sc_in_resolved() {}
+
+void sc_in_resolved::end_of_elaboration() {}
+
+const char *sc_in_resolved::kind() const { return "sc_in_resolved"; }
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_inout_resolved.cc b/src/systemc/channel/sc_inout_resolved.cc
new file mode 100644
index 000000000..71cece846
--- /dev/null
+++ b/src/systemc/channel/sc_inout_resolved.cc
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_inout_resolved.hh"
+
+namespace sc_core
+{
+
+sc_inout_resolved::sc_inout_resolved() : sc_inout<sc_dt::sc_logic>() {}
+
+sc_inout_resolved::sc_inout_resolved(const char *name) :
+        sc_inout<sc_dt::sc_logic>(name)
+{}
+
+sc_inout_resolved::~sc_inout_resolved() {}
+
+void sc_inout_resolved::end_of_elaboration() {}
+
+sc_inout_resolved &
+sc_inout_resolved::operator = (const sc_dt::sc_logic &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_inout_resolved &
+sc_inout_resolved::operator = (const sc_signal_in_if<sc_dt::sc_logic> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_inout_resolved &
+sc_inout_resolved::operator = (
+        const sc_port<sc_signal_in_if<sc_dt::sc_logic>, 1> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_inout_resolved &
+sc_inout_resolved::operator = (
+        const sc_port<sc_signal_inout_if<sc_dt::sc_logic>, 1> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_inout_resolved &
+sc_inout_resolved::operator = (const sc_inout_resolved &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+const char *sc_inout_resolved::kind() const { return "sc_inout_resolved"; }
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_mutex.cc b/src/systemc/channel/sc_mutex.cc
new file mode 100644
index 000000000..80d086f55
--- /dev/null
+++ b/src/systemc/channel/sc_mutex.cc
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_mutex.hh"
+#include "systemc/ext/core/sc_module.hh" // for sc_gen_unique_name
+
+namespace sc_core
+{
+
+sc_mutex::sc_mutex() : sc_interface(), sc_mutex_if(),
+        sc_object(sc_gen_unique_name("mutex"))
+{}
+
+sc_mutex::sc_mutex(const char *name) :
+        sc_interface(), sc_mutex_if(), sc_object(name)
+{}
+
+int
+sc_mutex::lock()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+int
+sc_mutex::trylock()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+int
+sc_mutex::unlock()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+const char *sc_mutex::kind() const { return "sc_mutex"; }
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_out_resolved.cc b/src/systemc/channel/sc_out_resolved.cc
new file mode 100644
index 000000000..a3947f68a
--- /dev/null
+++ b/src/systemc/channel/sc_out_resolved.cc
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_out_resolved.hh"
+
+namespace sc_core
+{
+
+sc_out_resolved::sc_out_resolved() : sc_out<sc_dt::sc_logic>() {}
+
+sc_out_resolved::sc_out_resolved(const char *name) :
+        sc_out<sc_dt::sc_logic>(name) {}
+
+sc_out_resolved::~sc_out_resolved() {}
+
+sc_out_resolved &
+sc_out_resolved::operator = (const sc_dt::sc_logic &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_out_resolved &
+sc_out_resolved::operator = (const sc_signal_in_if<sc_dt::sc_logic> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_out_resolved &
+sc_out_resolved::operator = (
+        const sc_port<sc_signal_in_if<sc_dt::sc_logic>, 1> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_out_resolved &
+sc_out_resolved::operator = (
+        const sc_port<sc_signal_inout_if<sc_dt::sc_logic>, 1> &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_out_resolved &
+sc_out_resolved::operator = (const sc_out_resolved &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+const char *sc_out_resolved::kind() const { return "sc_out_resolved"; }
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_semaphore.cc b/src/systemc/channel/sc_semaphore.cc
new file mode 100644
index 000000000..cfae59804
--- /dev/null
+++ b/src/systemc/channel/sc_semaphore.cc
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_semaphore.hh"
+#include "systemc/ext/core/sc_module.hh" // for sc_gen_unique_name
+
+namespace sc_core
+{
+
+sc_semaphore::sc_semaphore(int) :
+        sc_interface(), sc_semaphore_if(),
+        sc_object(sc_gen_unique_name("semaphore"))
+{}
+
+sc_semaphore::sc_semaphore(const char *name, int) :
+        sc_interface(), sc_semaphore_if(), sc_object(name)
+{}
+
+int
+sc_semaphore::wait()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+int
+sc_semaphore::trywait()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+int
+sc_semaphore::post()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+int
+sc_semaphore::get_value() const
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return 0;
+}
+
+const char *sc_semaphore::kind() const { return "sc_semaphore"; }
+
+} // namespace sc_core
diff --git a/src/systemc/channel/sc_signal_resolved.cc b/src/systemc/channel/sc_signal_resolved.cc
new file mode 100644
index 000000000..90431842e
--- /dev/null
+++ b/src/systemc/channel/sc_signal_resolved.cc
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/sc_signal_resolved.hh"
+#include "systemc/ext/core/sc_module.hh" // for sc_gen_unique_name
+
+namespace sc_core
+{
+
+sc_signal_resolved::sc_signal_resolved() : sc_interface(),
+        sc_signal<sc_dt::sc_logic, SC_MANY_WRITERS>(
+                sc_gen_unique_name("signal_resolved"))
+{}
+
+sc_signal_resolved::sc_signal_resolved(const char *name) :
+        sc_interface(), sc_signal<sc_dt::sc_logic, SC_MANY_WRITERS>(name)
+{}
+
+sc_signal_resolved::~sc_signal_resolved() {}
+
+void
+sc_signal_resolved::register_port(sc_port_base &, const char *)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+void
+sc_signal_resolved::write(const sc_dt::sc_logic &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+sc_signal_resolved &
+sc_signal_resolved::operator = (const sc_dt::sc_logic &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+sc_signal_resolved &
+sc_signal_resolved::operator = (const sc_signal_resolved &)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return *this;
+}
+
+const char *sc_signal_resolved::kind() const { return "sc_signal_resolved"; }
+
+void
+sc_signal_resolved::update()
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+}
+
+} // namespace sc_core
diff --git a/src/systemc/channel/warn_unimpl.cc b/src/systemc/channel/warn_unimpl.cc
new file mode 100644
index 000000000..82fd8367b
--- /dev/null
+++ b/src/systemc/channel/warn_unimpl.cc
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "base/logging.hh"
+#include "systemc/ext/channel/warn_unimpl.hh"
+
+namespace sc_core
+{
+
+void
+sc_channel_warn_unimpl(const char *func)
+{
+    warn("%s not implemented.\n", func);
+}
+
+} // namespace sc_core