1 files changed, 105 insertions, 0 deletions
diff --git a/src/systemc/core/sc_main_python.cc b/src/systemc/core/sc_main_python.cc
new file mode 100644
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+++ b/src/systemc/core/sc_main_python.cc
@@ -0,0 +1,105 @@
+/*
+ * 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 <cstring>
+#include <string>
+
+#include "base/fiber.hh"
+#include "base/logging.hh"
+#include "systemc/core/python.hh"
+#include "systemc/core/sc_main_fiber.hh"
+
+namespace
+{
+
+// This wrapper adapts the python version of sc_main to the c++ version.
+void
+sc_main(pybind11::args args)
+{
+    panic_if(::sc_gem5::scMainFiber.called(),
+            "sc_main called more than once.");
+
+    int argc = args.size();
+    char **argv = new char *[argc];
+
+    // Initialize all the argvs to NULL so we can delete [] them
+    // unconditionally.
+    for (int idx = 0; idx < argc; idx++)
+        argv[idx] = NULL;
+
+    // Attempt to convert all the arguments to strings. If that fails, clean
+    // up after ourselves. Also don't count this as a call to sc_main since
+    // we never got to the c++ version of that function.
+    try {
+        for (int idx = 0; idx < argc; idx++) {
+            std::string arg = args[idx].cast<std::string>();
+            argv[idx] = new char[arg.length() + 1];
+            strcpy(argv[idx], arg.c_str());
+        }
+    } catch (...) {
+        // If that didn't work for some reason (probably a conversion error)
+        // blow away argv and argc and pass on the exception.
+        for (int idx = 0; idx < argc; idx++)
+            delete [] argv[idx];
+        delete [] argv;
+        argc = 0;
+        throw;
+    }
+
+    ::sc_gem5::scMainFiber.setArgs(argc, argv);
+    ::sc_gem5::scMainFiber.run();
+}
+
+int
+sc_main_result_code()
+{
+    return ::sc_gem5::scMainFiber.resultInt();
+}
+
+std::string
+sc_main_result_str()
+{
+    return ::sc_gem5::scMainFiber.resultStr();
+}
+
+// Make our sc_main wrapper available in the internal _m5 python module under
+// the systemc submodule.
+
+struct InstallScMain : public ::sc_gem5::PythonInitFunc
+{
+    void
+    run(pybind11::module &systemc) override
+    {
+        systemc.def("sc_main", &sc_main);
+        systemc.def("sc_main_result_code", &sc_main_result_code);
+        systemc.def("sc_main_result_str", &sc_main_result_str);
+    }
+} installScMain;
+
+} // anonymous namespace