/*
 * Win32u kernel interface
 *
 * Copyright 2021 Alexandre Julliard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "winternl.h"
#include "wine/exception.h"
#include "wine/unixlib.h"

extern void *__wine_syscall_dispatcher DECLSPEC_HIDDEN;

static unixlib_handle_t win32u_handle;

void __cdecl __wine_spec_unimplemented_stub( const char *module, const char *function )
{
    EXCEPTION_RECORD record;

    record.ExceptionCode    = EXCEPTION_WINE_STUB;
    record.ExceptionFlags   = EH_NONCONTINUABLE;
    record.ExceptionRecord  = NULL;
    record.ExceptionAddress = __wine_spec_unimplemented_stub;
    record.NumberParameters = 2;
    record.ExceptionInformation[0] = (ULONG_PTR)module;
    record.ExceptionInformation[1] = (ULONG_PTR)function;
    for (;;) RtlRaiseException( &record );
}

BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, void *reserved )
{
    switch (reason)
    {
    case DLL_PROCESS_ATTACH:
        LdrDisableThreadCalloutsForDll( inst );
        if (__wine_syscall_dispatcher) break;  /* already set through Wow64Transition */
        if (!NtQueryVirtualMemory( GetCurrentProcess(), inst, MemoryWineUnixFuncs,
                                   &win32u_handle, sizeof(win32u_handle), NULL ))
        {
            __wine_unix_call( win32u_handle, 0, &__wine_syscall_dispatcher );
        }
        break;
    }
    return TRUE;
}