xref: /reactos/sdk/lib/crt/wine/except_arm64.c (revision 3a61dd7f)

/*
 * msvcrt C++ exception handling
 *
 * Copyright 2011 Alexandre Julliard
 * Copyright 2013 André Hentschel
 * Copyright 2017 Martin Storsjo
 *
 * 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
 */

#ifdef __aarch64__

#include <setjmp.h>
#include <stdarg.h>
#include <fpieee.h>

#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "msvcrt.h"
#include "wine/exception.h"
#include "excpt.h"
#include "wine/debug.h"

#include "cppexcept.h"

WINE_DEFAULT_DEBUG_CHANNEL(seh);


/*********************************************************************
 *		__CxxExceptionFilter (MSVCRT.@)
 */
int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs,
                                const type_info *ti, int flags, void **copy )
{
    FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy );
    return EXCEPTION_CONTINUE_SEARCH;
}

/*********************************************************************
 *		__CxxFrameHandler (MSVCRT.@)
 */
EXCEPTION_DISPOSITION CDECL __CxxFrameHandler(EXCEPTION_RECORD *rec, DWORD frame, CONTEXT *context,
                                              DISPATCHER_CONTEXT *dispatch)
{
    FIXME("%p %x %p %p: not implemented\n", rec, frame, context, dispatch);
    return ExceptionContinueSearch;
}


/*********************************************************************
 *		__CppXcptFilter (MSVCRT.@)
 */
int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
{
    /* only filter c++ exceptions */
    if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
    return _XcptFilter(ex, ptr);
}


/*********************************************************************
 *		__CxxDetectRethrow (MSVCRT.@)
 */
BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
{
    PEXCEPTION_RECORD rec;

    if (!ptrs)
        return FALSE;

    rec = ptrs->ExceptionRecord;

    if (rec->ExceptionCode == CXX_EXCEPTION &&
        rec->NumberParameters == 3 &&
        rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 &&
        rec->ExceptionInformation[2])
    {
        ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
        return TRUE;
    }
    return (msvcrt_get_thread_data()->exc_record == rec);
}


/*********************************************************************
 *		__CxxQueryExceptionSize (MSVCRT.@)
 */
unsigned int CDECL __CxxQueryExceptionSize(void)
{
    return sizeof(cxx_exception_type);
}


/*******************************************************************
 *		_setjmp (MSVCRT.@)
 */
__ASM_GLOBAL_FUNC(MSVCRT__setjmp,
                  "b " __ASM_NAME("__wine_setjmpex"));

/*******************************************************************
 *		longjmp (MSVCRT.@)
 */
void __cdecl MSVCRT_longjmp(_JUMP_BUFFER *jmp, int retval)
{
    EXCEPTION_RECORD rec;

    if (!retval) retval = 1;
    if (jmp->Frame)
    {
        rec.ExceptionCode = STATUS_LONGJUMP;
        rec.ExceptionFlags = 0;
        rec.ExceptionRecord = NULL;
        rec.ExceptionAddress = NULL;
        rec.NumberParameters = 1;
        rec.ExceptionInformation[0] = (DWORD_PTR)jmp;
        RtlUnwind((void *)jmp->Frame, (void *)jmp->Lr, &rec, IntToPtr(retval));
    }
    __wine_longjmp( (__wine_jmp_buf *)jmp, retval );
}

/*********************************************************************
 *              _fpieee_flt (MSVCRT.@)
 */
int __cdecl _fpieee_flt(__msvcrt_ulong exception_code, EXCEPTION_POINTERS *ep,
        int (__cdecl *handler)(_FPIEEE_RECORD*))
{
    FIXME("(%lx %p %p)\n", exception_code, ep, handler);
    return EXCEPTION_CONTINUE_SEARCH;
}

#endif  /* __aarch64__ */