Restructured and rewritten entire codebase

library/libstdc++/class_type_info.cpp

@@ -0,0 +1,103 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <typeinfo>
+#include <debug.h>
+
+namespace __cxxabiv1
+{
+	__class_type_info::~__class_type_info() {}
+
+	bool __class_type_info::__do_upcast(const __class_type_info *Destination,
+										const void *Object,
+										__upcast_result &__restrict Result) const
+	{
+		if (*this != *Destination)
+			return false;
+
+		Result.dst_ptr = Object;
+		Result.base_type = nonvirtual_base_type;
+		Result.part2dst = __contained_public;
+		return true;
+	}
+
+	bool __class_type_info::__do_upcast(const __class_type_info *DestinationType,
+										void **ObjectPointer) const
+	{
+		__upcast_result Result(__vmi_class_type_info::__flags_unknown_mask);
+
+		__do_upcast(DestinationType, *ObjectPointer, Result);
+
+		if (!((Result.part2dst &
+			   __class_type_info::__contained_public) ==
+			  __class_type_info::__contained_public))
+			return false;
+
+		*ObjectPointer = const_cast<void *>(Result.dst_ptr);
+		return true;
+	}
+
+	bool __class_type_info::__do_catch(const type_info *ThrowType,
+									   void **ThrowObject,
+									   unsigned Outer) const
+	{
+		if (*this == *ThrowType)
+			return true;
+
+		if (Outer >= 4)
+			return false;
+
+		return ThrowType->__do_upcast(this, ThrowObject);
+	}
+
+	bool __class_type_info::__do_dyncast(ptrdiff_t,
+										 __sub_kind AccessPath,
+										 const __class_type_info *DestinationType,
+										 const void *ObjectPointer,
+										 const __class_type_info *SourceType,
+										 const void *SourcePointer,
+										 __dyncast_result &__restrict Result) const
+	{
+		if (ObjectPointer == SourcePointer &&
+			*this == *SourceType)
+		{
+			Result.whole2src = AccessPath;
+			return false;
+		}
+
+		if (*this == *DestinationType)
+		{
+			Result.dst_ptr = ObjectPointer;
+			Result.whole2dst = AccessPath;
+			Result.dst2src = __not_contained;
+			return false;
+		}
+
+		return false;
+	}
+
+	__class_type_info::__sub_kind __class_type_info::__do_find_public_src(ptrdiff_t,
+																		  const void *ObjectPointer,
+																		  const __class_type_info *,
+																		  const void *SourcePointer) const
+	{
+		if (SourcePointer == ObjectPointer)
+			return __contained_public;
+
+		return __not_contained;
+	}
+}

library/libstdc++/cxxabi.cpp

@@ -0,0 +1,251 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <cxxabi.h>
+
+#include <memory.hpp>
+#include <debug.h>
+#include <smp.hpp>
+
+#include "../../kernel.h"
+
+void __dso_handle_stub() { stub; }
+
+/* extern */ void *__dso_handle = (void *)&__dso_handle_stub;
+
+namespace __cxxabiv1
+{
+	atexit_func_entry_t __atexit_funcs[ATEXIT_MAX_FUNCS];
+	uarch_t __atexit_func_count = 0;
+
+	__cxa_eh_globals *__cxa_get_globals() noexcept
+	{
+		return &GetCurrentCPU()->EHGlobals;
+	}
+
+	/**
+	 * @param f The destructor
+	 * @param objptr The object to be destructed
+	 * @param dso The DSO from which the object was obtained (unused in our case)
+	 * @return Zero on success, non-zero on failure
+	 */
+	extern "C" int __cxa_atexit(void (*f)(void *), void *objptr, void *dso)
+	{
+		if (KernelSymbolTable)
+		{
+			debug("Registering atexit function for \"%s\" with destructor \"%s\"",
+				  KernelSymbolTable->GetSymbolFromAddress((uintptr_t)objptr),
+				  KernelSymbolTable->GetSymbolFromAddress((uintptr_t)f));
+		}
+		else
+		{
+			debug("Registering atexit function for %p with destructor %p",
+				  objptr, f);
+		}
+
+		if (__atexit_func_count >= ATEXIT_MAX_FUNCS)
+			return -1;
+		__atexit_funcs[__atexit_func_count].destructor_func = f;
+		__atexit_funcs[__atexit_func_count].obj_ptr = objptr;
+		__atexit_funcs[__atexit_func_count].dso_handle = dso;
+		__atexit_func_count++;
+		return 0;
+	}
+
+	extern "C" void __cxa_finalize(void *f)
+	{
+		function("%p", f);
+		uarch_t i = __atexit_func_count;
+		if (f == nullptr)
+		{
+			while (i--)
+			{
+				if (__atexit_funcs[i].destructor_func)
+				{
+					if (KernelSymbolTable)
+					{
+						debug("Calling atexit function \"%s\"",
+							  KernelSymbolTable->GetSymbolFromAddress((uintptr_t)__atexit_funcs[i].destructor_func));
+					}
+					else
+					{
+						debug("Calling atexit function %p",
+							  __atexit_funcs[i].destructor_func);
+					}
+					(*__atexit_funcs[i].destructor_func)(__atexit_funcs[i].obj_ptr);
+				}
+			}
+			return;
+		}
+
+		while (i--)
+		{
+			if (__atexit_funcs[i].destructor_func == f)
+			{
+				(*__atexit_funcs[i].destructor_func)(__atexit_funcs[i].obj_ptr);
+				__atexit_funcs[i].destructor_func = 0;
+			}
+		}
+	}
+
+	extern "C" _Unwind_Reason_Code __gxx_personality_v0(int version, _Unwind_Action actions, _Unwind_Exception_Class exception_class, _Unwind_Exception *ue_header, _Unwind_Context *context)
+	{
+		fixme("__gxx_personality_v0( %d %p %p %p %p ) called.", version, actions, exception_class, ue_header, context);
+		return _URC_NO_REASON;
+	}
+
+	extern "C" void *__cxa_begin_catch(void *thrown_object) noexcept
+	{
+		function("%p", thrown_object);
+
+		__cxa_exception *Exception = (__cxa_exception *)thrown_object - 1;
+		__cxa_eh_globals *Globals = __cxa_get_globals();
+
+		Exception->handlerCount++;
+		Globals->uncaughtExceptions--;
+
+		Exception->nextException = Globals->caughtExceptions;
+		Globals->caughtExceptions = Exception;
+		return Exception + 1;
+	}
+
+	extern "C" void __cxa_end_catch()
+	{
+		fixme("__cxa_end_catch() called.");
+	}
+
+	static __always_inline inline size_t align_exception_allocation_size(size_t a, size_t b)
+	{
+		return (a + b - 1) & ~(b - 1);
+	}
+
+	static __always_inline inline void INIT_EXCEPTION_CLASS(_Unwind_Exception_Class *c)
+	{
+		char *ptr = (char *)c;
+		ptr[0] = 'G';
+		ptr[1] = 'N';
+		ptr[2] = 'U';
+		ptr[3] = 'C';
+		ptr[4] = 'C';
+		ptr[5] = '+';
+		ptr[6] = '+';
+		ptr[7] = '\0';
+	}
+
+	void unexpected_header_stub() { fixme("unexpected() called."); }
+
+	void terminate_header_stub()
+	{
+		if (TaskManager && !TaskManager->IsPanic())
+		{
+			TaskManager->KillThread(thisThread, Tasking::KILL_CXXABI_EXCEPTION);
+			TaskManager->Yield();
+		}
+
+		error("No task manager to kill thread!");
+		CPU::Stop(); /* FIXME: Panic */
+	}
+
+	void exception_cleanup_stub(_Unwind_Reason_Code Code,
+								_Unwind_Exception *Exception)
+	{
+		fixme("exception_cleanup( %d %p ) called.",
+			  Code, Exception);
+	}
+
+	extern "C" void *__cxa_allocate_exception(size_t thrown_size) throw()
+	{
+		debug("Allocating exception of size %d.", thrown_size);
+
+		size_t alloc_size = align_exception_allocation_size(thrown_size + sizeof(__cxa_exception), alignof(__cxa_exception));
+		__cxa_exception *Exception = (__cxa_exception *)kmalloc(alloc_size);
+		memset(Exception, 0, alloc_size);
+		return Exception + 1;
+	}
+
+	extern "C" __noreturn void __cxa_throw(void *thrown_object,
+										   std::type_info *tinfo,
+										   void (*dest)(void *))
+	{
+		trace("Throwing exception of type \"%s\". ( object: %p, destructor: %p )",
+			  tinfo->name(), thrown_object, dest);
+
+		__cxa_eh_globals *Globals = __cxa_get_globals();
+		Globals->uncaughtExceptions++;
+
+		__cxa_exception *Exception = (__cxa_exception *)thrown_object - 1;
+		Exception->exceptionType = (std::type_info *)tinfo;
+		Exception->exceptionDestructor = dest;
+		Exception->unexpectedHandler = &unexpected_header_stub;
+		Exception->terminateHandler = &terminate_header_stub;
+		Exception->unwindHeader.exception_cleanup = &exception_cleanup_stub;
+		INIT_EXCEPTION_CLASS(&Exception->unwindHeader.exception_class);
+		Exception->adjustedPtr = thrown_object;
+
+		_Unwind_RaiseException(&Exception->unwindHeader);
+		__cxa_begin_catch(&Exception->unwindHeader);
+
+		error("Uncaught exception!");
+		CPU::Stop(); /* FIXME: Panic */
+	}
+
+	extern "C" void __cxa_rethrow()
+	{
+		fixme("__cxa_rethrow() called.");
+	}
+
+	extern "C" void __cxa_pure_virtual()
+	{
+		fixme("__cxa_pure_virtual() called.");
+	}
+
+	extern "C" void __cxa_throw_bad_array_new_length()
+	{
+		fixme("__cxa_throw_bad_array_new_length() called.");
+	}
+
+	extern "C" void __cxa_free_exception(void *thrown_exception)
+	{
+		fixme("__cxa_free_exception( %p ) called.",
+			  thrown_exception);
+	}
+
+	__extension__ typedef int __guard __attribute__((mode(__DI__)));
+
+	extern "C" int __cxa_guard_acquire(__guard *g)
+	{
+		fixme("__cxa_guard_acquire( %p ) called.", g);
+		return !*(char *)(g);
+	}
+
+	extern "C" void __cxa_guard_release(__guard *g)
+	{
+		fixme("__cxa_guard_release( %p ) called.", g);
+		*(char *)g = 1;
+	}
+
+	extern "C" void __cxa_guard_abort(__guard *g)
+	{
+		fixme("__cxa_guard_abort( %p ) called.", g);
+	}
+
+	extern "C" __noreturn void __cxa_bad_typeid()
+	{
+		fixme("__cxa_bad_typeid() called.");
+		CPU::Stop(); /* FIXME: Crash the system */
+	}
+}

library/libstdc++/fundamental_type_info.cpp

@@ -0,0 +1,23 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <typeinfo>
+
+namespace __cxxabiv1
+{
+   __fundamental_type_info::~__fundamental_type_info() {}
+}

library/libstdc++/pbase_type_info.cpp

@@ -0,0 +1,91 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <typeinfo>
+
+namespace __cxxabiv1
+{
+	__pbase_type_info::~__pbase_type_info() {}
+
+	bool __pbase_type_info::__do_catch(const type_info *ThrowType,
+									   void **ThrowObject,
+									   unsigned outer) const
+	{
+#ifndef __GXX_RTTI
+		UNUSED(ThrowType);
+		UNUSED(ThrowObject);
+		UNUSED(outer);
+		return false;
+#else
+		if (*this == *ThrowType)
+			return true;
+
+		if (*ThrowType == typeid(nullptr))
+		{
+			if (typeid(*this) == typeid(__pointer_type_info))
+			{
+				*ThrowObject = nullptr;
+				return true;
+			}
+			else if (typeid(*this) == typeid(__pointer_to_member_type_info))
+			{
+				if (this->Pointee->__is_function_p())
+				{
+					using pmf_type = void (__pbase_type_info::*)();
+					static const pmf_type pmf = nullptr;
+					*ThrowObject = const_cast<pmf_type *>(&pmf);
+					return true;
+				}
+				else
+				{
+					using pm_type = int __pbase_type_info::*;
+					static const pm_type pm = nullptr;
+					*ThrowObject = const_cast<pm_type *>(&pm);
+					return true;
+				}
+			}
+		}
+
+		if (typeid(*this) != typeid(*ThrowType))
+			return false;
+
+		if (!(outer & 1))
+			return false;
+
+		const __pbase_type_info *ThrownType =
+			static_cast<const __pbase_type_info *>(ThrowType);
+
+		unsigned TypeFlags = ThrownType->Flags;
+
+		const unsigned FlagQualificationMask = __transaction_safe_mask | __noexcept_mask;
+		unsigned ThrowFlagQualification = (TypeFlags & FlagQualificationMask);
+		unsigned CatchFlagQualification = (Flags & FlagQualificationMask);
+		if (ThrowFlagQualification & ~CatchFlagQualification)
+			TypeFlags &= CatchFlagQualification;
+		if (CatchFlagQualification & ~ThrowFlagQualification)
+			return false;
+
+		if (TypeFlags & ~Flags)
+			return false;
+
+		if (!(Flags & __const_mask))
+			outer &= ~1;
+
+		return __pointer_catch(ThrownType, ThrowObject, outer);
+#endif
+	}
+}

library/libstdc++/pointer_type_info.cpp

@@ -0,0 +1,45 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <typeinfo>
+
+namespace __cxxabiv1
+{
+	__pointer_type_info::~__pointer_type_info() {}
+
+	bool __pointer_type_info::__is_pointer_p() const { return true; }
+
+	bool __pointer_type_info::__pointer_catch(const __pbase_type_info *ThrownType,
+											  void **ThrowObject,
+											  unsigned Outer) const
+	{
+#ifndef __GXX_RTTI
+		UNUSED(ThrownType);
+		UNUSED(ThrowObject);
+		UNUSED(Outer);
+		return false;
+#else
+		if (Outer < 2 && *this->Pointee == typeid(void))
+			return !ThrownType->Pointee->__is_function_p();
+
+		return __pbase_type_info::__pointer_catch(ThrownType,
+												  ThrowObject,
+												  Outer);
+#endif
+	}
+
+}

library/libstdc++/si_class_type_info.cpp

@@ -0,0 +1,102 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <typeinfo>
+#include <debug.h>
+
+namespace __cxxabiv1
+{
+	template <typename T>
+	inline const T *adjust_pointer(const void *Base,
+								   ptrdiff_t Offset)
+	{
+		return reinterpret_cast<const T *>(reinterpret_cast<const char *>(Base) + Offset);
+	}
+
+	__si_class_type_info::~__si_class_type_info() {}
+
+	__class_type_info::__sub_kind __si_class_type_info::
+		__do_find_public_src(ptrdiff_t SourceToDestination,
+							 const void *ObjectPointer,
+							 const __class_type_info *SourceType,
+							 const void *SourcePointer) const
+	{
+		if (SourcePointer == ObjectPointer && *this == *SourceType)
+			return __contained_public;
+
+		return this->BaseType->__do_find_public_src(SourceToDestination,
+													ObjectPointer,
+													SourceType,
+													SourcePointer);
+	}
+
+	bool __si_class_type_info::__do_dyncast(ptrdiff_t SourceToDestination,
+											__sub_kind AccessPath,
+											const __class_type_info *DestinationType,
+											const void *ObjectPointer,
+											const __class_type_info *SourceType,
+											const void *SourcePointer,
+											__dyncast_result &__restrict Result) const
+	{
+		if (*this == *DestinationType)
+		{
+			Result.dst_ptr = ObjectPointer;
+			Result.whole2dst = AccessPath;
+
+			if (SourceToDestination == -2)
+			{
+				Result.dst2src = __not_contained;
+				return false;
+			}
+
+			if (SourceToDestination >= 0)
+			{
+				Result.dst2src = adjust_pointer<void>(ObjectPointer,
+													  SourceToDestination) == SourcePointer
+									 ? __contained_public
+									 : __not_contained;
+			}
+
+			return false;
+		}
+
+		if (ObjectPointer == SourcePointer &&
+			*this == *SourceType)
+		{
+			Result.whole2src = AccessPath;
+			return false;
+		}
+
+		return this->BaseType->__do_dyncast(SourceToDestination,
+											AccessPath,
+											DestinationType,
+											ObjectPointer,
+											SourceType,
+											SourcePointer,
+											Result);
+	}
+
+	bool __si_class_type_info::__do_upcast(const __class_type_info *Destination,
+										   const void *ObjectPointer,
+										   __upcast_result &__restrict Result) const
+	{
+		if (__class_type_info::__do_upcast(Destination, ObjectPointer, Result))
+			return true;
+
+		return this->BaseType->__do_upcast(Destination, ObjectPointer, Result);
+	}
+}

library/libstdc++/unwind.cpp

@@ -0,0 +1,41 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <unwind.h>
+#include <cxxabi.h>
+#include <debug.h>
+#include <cpu.hpp>
+#include <smp.hpp>
+
+#include "../../kernel.h"
+
+using namespace __cxxabiv1;
+
+#if (1) /* Stubs if libgcc is not present */
+extern "C" _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception *Exception)
+{
+	fixme("_Unwind_RaiseException( %p ) called.", Exception);
+	error("Unhandled exception.");
+	return _URC_FATAL_PHASE1_ERROR;
+	// return _URC_NO_REASON;
+}
+
+extern "C" void _Unwind_Resume(struct _Unwind_Exception *Exception)
+{
+	fixme("_Unwind_Resume( %p ) called.", Exception);
+}
+#endif