systemc: Stub out all the standard utilility classes and functions.

Change-Id: I9e9724edb6281e0b0a6bae5546b0ede77d295c12
Reviewed-on: https://gem5-review.googlesource.com/10841
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/systemc/ext/utils/functions.hh b/src/systemc/ext/utils/functions.hh
new file mode 100644
index 000000000..5c259e1b7
--- /dev/null
+++ b/src/systemc/ext/utils/functions.hh
@@ -0,0 +1,104 @@
+/*
+ * 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
+ */
+
+#ifndef __SYSTEMC_EXT_UTIL_FUNCTIONS_HH__
+#define __SYSTEMC_EXT_UTIL_FUNCTIONS_HH__
+
+#include <string>
+
+namespace sc_dt
+{
+
+template <class T>
+const T
+sc_abs(const T &a)
+{
+    // return ( a >= 0 ? a : -a );
+    // the code below is functionaly the same as the code above; the
+    // difference is that the code below works for all arithmetic
+    // SystemC datatypes.
+    T z(a);
+    z = 0;
+    if (a >= z) {
+        return a;
+    } else {
+        T c(a);
+        c = -a;
+        return c;
+    }
+}
+
+template <class T>
+const T sc_max(const T &a, const T &b) { return ((a >= b) ? a : b); }
+
+template <class T>
+const T sc_min(const T &a, const T &b) { return ((a <= b) ? a : b); }
+
+} // namespace sc_dt
+
+namespace sc_core
+{
+
+#define IEEE_1666_SYSTEMC 201101L
+
+#define SC_VERSION_MAJOR 0
+#define SC_VERSION_MINOR 1
+#define SC_VERSION_PATCH 0
+#define SC_VERSION_ORIGINATOR "gem5"
+#define SC_VERSION_RELEASE_DATE "NA"
+#define SC_VERSION_PRERELEASE "beta"
+#define SC_IS_PRERELEASE true
+#define SC_VERSION "0.1.0_beta-gem5"
+#define SC_COPYRIGHT "Copyright 2018 Google, Inc."
+
+extern const unsigned int sc_version_major;
+extern const unsigned int sc_version_minor;
+extern const unsigned int sc_version_patch;
+extern const std::string sc_version_originator;
+extern const std::string sc_version_release_date;
+extern const std::string sc_version_prerelease;
+extern const bool sc_is_prerelease;
+extern const std::string sc_version_string;
+extern const std::string sc_copyright_string;
+
+static inline const char *
+sc_release()
+{
+    return sc_version_string.c_str();
+}
+static inline const char *
+sc_copyright()
+{
+    return sc_copyright_string.c_str();
+}
+const char *sc_version();
+
+} // namespace sc_core
+
+#endif  //__SYSTEMC_EXT_UTIL_FUNCTIONS_HH__