Merge remote-tracking branch 'Drivers/master'

Drivers/library/crt/crt0.cpp

@@ -0,0 +1,144 @@
+/*
+	This file is part of Fennix Drivers.
+
+	Fennix Drivers 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 Drivers 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 Drivers. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <driver.h>
+#include <errno.h>
+
+dev_t DriverID = -1;
+
+extern "C" int DriverEntry();
+extern "C" int DriverFinal();
+extern "C" int DriverPanic();
+extern "C" int DriverProbe();
+
+typedef void (*CallPtr)(void);
+extern "C" CallPtr __init_array_start[0], __init_array_end[0];
+extern "C" CallPtr __fini_array_start[0], __fini_array_end[0];
+
+extern "C" int _start(dev_t id)
+{
+	DriverID = id;
+
+	for (CallPtr *func = __init_array_start; func != __init_array_end; func++)
+		(*func)();
+
+	return 0;
+}
+
+extern "C" int _final()
+{
+	int err = DriverFinal();
+
+	for (CallPtr *func = __fini_array_start; func != __fini_array_end; func++)
+		(*func)();
+
+	return err;
+}
+
+/* ---------------------------------------------------------- */
+
+#define KCALL extern "C" __attribute__((used))
+
+#define KernelFunction(Name)                                         \
+	KCALL long __##Name(dev_t id,                                    \
+						long arg0 = 0, long arg1 = 0, long arg2 = 0, \
+						long arg3 = 0, long arg4 = 0, long arg5 = 0);
+
+#define DefineFunction(ReturnType, Name, ...) \
+	KernelFunction(Name);                     \
+	KCALL ReturnType Name(__VA_ARGS__)
+
+#define DefineWrapper(Name)                                                           \
+	KernelFunction(Name);                                                             \
+	KCALL long Name(long arg0, long arg1, long arg2, long arg3, long arg4, long arg5) \
+	{                                                                                 \
+		return __##Name(DriverID, arg0, arg1, arg2, arg3, arg4, arg5);                \
+	}
+
+DefineFunction(void, KernelPrint, const char *format, ...)
+{
+	__builtin_va_list args;
+	__builtin_va_start(args, format);
+	__KernelPrint(DriverID, (long)format, (long)args);
+	__builtin_va_end(args);
+}
+
+DefineFunction(void, KernelLog, const char *format, ...)
+{
+	__builtin_va_list args;
+	__builtin_va_start(args, format);
+	__KernelLog(DriverID, (long)format, (long)args);
+	__builtin_va_end(args);
+}
+
+DefineWrapper(RegisterInterruptHandler);
+DefineWrapper(OverrideInterruptHandler);
+DefineWrapper(UnregisterInterruptHandler);
+DefineWrapper(UnregisterAllInterruptHandlers);
+
+DefineWrapper(AllocateMemory);
+DefineWrapper(FreeMemory);
+DefineWrapper(AppendMapFlag);
+DefineWrapper(RemoveMapFlag);
+DefineWrapper(MapPages);
+DefineWrapper(UnmapPages);
+
+DefineWrapper(MemoryCopy);
+DefineWrapper(MemorySet);
+DefineWrapper(MemoryMove);
+DefineWrapper(StringLength);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wbuiltin-declaration-mismatch"
+DefineWrapper(strstr);
+#pragma GCC diagnostic pop
+
+DefineWrapper(EnterCriticalSection);
+DefineWrapper(LeaveCriticalSection);
+
+DefineWrapper(CreateKernelProcess);
+DefineWrapper(CreateKernelThread);
+DefineWrapper(GetCurrentProcess);
+DefineWrapper(KillProcess);
+DefineWrapper(KillThread);
+DefineWrapper(Yield);
+DefineWrapper(Sleep);
+
+DefineWrapper(RegisterFileSystem);
+DefineWrapper(UnregisterFileSystem);
+
+DefineWrapper(PIC_EOI);
+DefineWrapper(IRQ_MASK);
+DefineWrapper(IRQ_UNMASK);
+DefineWrapper(PS2Wait);
+DefineWrapper(PS2WriteCommand);
+DefineWrapper(PS2WriteData);
+DefineWrapper(PS2ReadData);
+DefineWrapper(PS2ReadStatus);
+DefineWrapper(PS2ReadAfterACK);
+DefineWrapper(PS2ClearOutputBuffer);
+DefineWrapper(PS2ACKTimeout);
+
+DefineWrapper(RegisterDevice);
+DefineWrapper(UnregisterDevice);
+
+DefineWrapper(ReportInputEvent);
+
+DefineWrapper(InitializePCI);
+DefineWrapper(GetPCIDevices);
+DefineWrapper(GetBAR);
+DefineWrapper(iLine);
+DefineWrapper(iPin);