Initial C++ runtime work. Much more to do.

runtime/typeinfo.cc

@@ -0,0 +1,132 @@
+/* 
+ * Copyright 2010-2012 PathScale, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ * 
+ * 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 HOLDER 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.
+ */
+
+#include "typeinfo.h"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+using std::type_info;
+
+type_info::~type_info() {}
+
+bool type_info::operator==(const type_info &other) const
+{
+	return __type_name == other.__type_name;
+}
+bool type_info::operator!=(const type_info &other) const
+{
+	return __type_name != other.__type_name;
+}
+bool type_info::before(const type_info &other) const
+{
+	return __type_name < other.__type_name;
+}
+const char* type_info::name() const
+{
+	return __type_name;
+}
+type_info::type_info (const type_info& rhs)
+{
+	__type_name = rhs.__type_name;
+}
+type_info& type_info::operator= (const type_info& rhs) 
+{
+	return *new type_info(rhs);
+}
+
+ABI_NAMESPACE::__fundamental_type_info::~__fundamental_type_info() {}
+ABI_NAMESPACE::__array_type_info::~__array_type_info() {}
+ABI_NAMESPACE::__function_type_info::~__function_type_info() {}
+ABI_NAMESPACE::__enum_type_info::~__enum_type_info() {}
+ABI_NAMESPACE::__class_type_info::~__class_type_info() {}
+ABI_NAMESPACE::__si_class_type_info::~__si_class_type_info() {}
+ABI_NAMESPACE::__vmi_class_type_info::~__vmi_class_type_info() {}
+ABI_NAMESPACE::__pbase_type_info::~__pbase_type_info() {}
+ABI_NAMESPACE::__pointer_type_info::~__pointer_type_info() {}
+ABI_NAMESPACE::__pointer_to_member_type_info::~__pointer_to_member_type_info() {}
+
+// From libelftc
+extern "C" char    *__cxa_demangle_gnu3(const char *);
+
+extern "C" char* __cxa_demangle(const char* mangled_name,
+                                char* buf,
+                                size_t* n,
+                                int* status)
+{
+	// TODO: We should probably just be linking against libelf-tc, rather than
+	// copying their code.  This requires them to do an actual release,
+	// however, and for our changes to be pushed upstream.  We also need to
+	// call a different demangling function here depending on the ABI (e.g.
+	// ARM).
+	char *demangled = __cxa_demangle_gnu3(mangled_name);
+	if (NULL != demangled)
+	{
+		size_t len = strlen(demangled);
+		if (buf == NULL)
+		{
+			if (n)
+			{
+				*n = len;
+			}
+			return demangled;
+		}
+		if (*n < len+1)
+		{
+			buf = static_cast<char*>(cxxruntime::realloc(buf, len+1));
+		}
+		if (0 != buf)
+		{
+			memcpy(buf, demangled, len);
+			buf[len] = 0;
+			if (n)
+			{
+				*n = len;
+			}
+			if (status)
+			{
+				*status = 0;
+			}
+		}
+		else
+		{
+			if (status)
+			{
+				*status = -1;
+			}
+		}
+		cxxruntime::free(demangled);
+	}
+	else
+	{
+		if (status)
+		{
+			*status = -2;
+		}
+		return NULL;
+	}
+	return buf;
+}