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

c++_runtime.cc

@@ -0,0 +1,134 @@
+extern "C"
+{
+	#include <sys/types.h>
+	#include <sys/systm.h>
+	#include <sys/param.h>
+	#include <sys/malloc.h>
+	#include <sys/kernel.h>
+}
+
+extern "C" void *__cxa_begin_catch( void *e ) noexcept;
+
+#include <stdlib.h>
+
+namespace std
+{
+	using size_t= ::size_t;
+
+	void terminate() __attribute__(( __noreturn__ ));
+}
+
+
+void *operator new( std::size_t s )
+{
+	std::terminate();
+}
+
+
+
+void operator delete( void * )
+{
+	std::terminate();
+}
+
+
+
+namespace std
+{
+	void
+	terminate()
+	{
+		panic( "Kernel panic from C++ runtime's `std::terminate`." );
+	}
+}
+
+namespace cpp_runtime
+{
+	void *catch_impl( void *e ) noexcept;
+}
+
+extern "C" void *
+__cxa_begin_catch( void *e ) noexcept
+{
+	return cpp_runtime::catch_impl( e );
+}
+
+//namespace __cxxabiv1
+//{
+	//class __class_type_info
+	//{
+	//};
+//}
+
+
+namespace cxxruntime
+{
+	MALLOC_DEFINE( cxxruntime_pool, "C++ pool", "Pool for C++ runtime behavior" );
+
+	void *
+	malloc( std::size_t s )
+	{
+		return malloc( s, cxxruntime_pool, M_WAITOK );
+	}
+
+	void *
+	realloc( void *p, std::size_t s )
+	{
+		return realloc( p, s, cxxruntime_pool, M_WAITOK );
+	}
+
+	void
+	free( void *p )
+	{
+		return free( p, cxxruntime_pool );
+	}
+}
+
+extern "C" void *
+cxxruntime_malloc( const size_t s )
+{
+	return cxxruntime::malloc( s );
+}
+
+extern "C" void *
+cxxruntime_realloc( void *p, size_t s )
+{
+	return cxxruntime::realloc( p, s );
+}
+
+extern "C" void
+cxxruntime_free( void *p )
+{
+	return cxxruntime::free( p );
+}
+
+extern "C" char *
+cxxruntime_strdup( const char *s )
+{
+	return strdup( s, cxxruntime::cxxruntime_pool );
+}
+
+extern "C" void
+abort()
+{
+	panic( "C++ Runtime: abort" );
+}
+
+ typedef enum
+{
+	_URC_OK = 0,                /* operation completed successfully */
+	_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+    _URC_END_OF_STACK = 5,
+	_URC_HANDLER_FOUND = 6,
+	_URC_INSTALL_CONTEXT = 7,
+	_URC_CONTINUE_UNWIND = 8,
+	_URC_FAILURE = 9,            /* unspecified failure of some kind */
+	_URC_FATAL_PHASE1_ERROR = _URC_FAILURE
+} _Unwind_Reason_Code;
+struct _Unwind_Exception;
+struct _Unwind_Context;
+typedef uint32_t _Unwind_State;
+
+extern "C" _Unwind_Reason_Code __gxx_personality_v0(_Unwind_State state,
+                         struct _Unwind_Exception *exceptionObject,
+                         struct _Unwind_Context *context){abort();}