dlls/msvcrt/except_arm64.c

   1 /*
   2  * msvcrt C++ exception handling
   3  *
   4  * Copyright 2011 Alexandre Julliard
   5  * Copyright 2013 André Hentschel
   6  * Copyright 2017 Martin Storsjo
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #ifdef __aarch64__
  24
  25 #include <setjmp.h>
  26 #include <stdarg.h>
  27 #include <fpieee.h>
  28
  29 #include "ntstatus.h"
  30 #define WIN32_NO_STATUS
  31 #include "windef.h"
  32 #include "winbase.h"
  33 #include "winternl.h"
  34 #include "msvcrt.h"
  35 #include "wine/exception.h"
  36 #include "excpt.h"
  37 #include "wine/debug.h"
  38
  39 #include "cppexcept.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(seh);
  42
  43
  44 /*********************************************************************
  45  *              __CxxExceptionFilter (MSVCRT.@)
  46  */
  47 int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs,
  48                                 const type_info *ti, int flags, void **copy )
  49 {
  50     FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy );
  51     return EXCEPTION_CONTINUE_SEARCH;
  52 }
  53
  54 /*********************************************************************
  55  *              __CxxFrameHandler (MSVCRT.@)
  56  */
  57 EXCEPTION_DISPOSITION CDECL __CxxFrameHandler(EXCEPTION_RECORD *rec, DWORD frame, CONTEXT *context,
  58                                               DISPATCHER_CONTEXT *dispatch)
  59 {
  60     FIXME("%p %x %p %p: not implemented\n", rec, frame, context, dispatch);
  61     return ExceptionContinueSearch;
  62 }
  63
  64
  65 /*********************************************************************
  66  *              __CppXcptFilter (MSVCRT.@)
  67  */
  68 int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
  69 {
  70     /* only filter c++ exceptions */
  71     if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
  72     return _XcptFilter(ex, ptr);
  73 }
  74
  75
  76 /*********************************************************************
  77  *              __CxxDetectRethrow (MSVCRT.@)
  78  */
  79 BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
  80 {
  81     PEXCEPTION_RECORD rec;
  82
  83     if (!ptrs)
  84         return FALSE;
  85
  86     rec = ptrs->ExceptionRecord;
  87
  88     if (rec->ExceptionCode == CXX_EXCEPTION &&
  89         rec->NumberParameters == 3 &&
  90         rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 &&
  91         rec->ExceptionInformation[2])
  92     {
  93         ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
  94         return TRUE;
  95     }
  96     return (msvcrt_get_thread_data()->exc_record == rec);
  97 }
  98
  99
 100 /*********************************************************************
 101  *              __CxxQueryExceptionSize (MSVCRT.@)
 102  */
 103 unsigned int CDECL __CxxQueryExceptionSize(void)
 104 {
 105     return sizeof(cxx_exception_type);
 106 }
 107
 108
 109 /*******************************************************************
 110  *              _setjmp (MSVCRT.@)
 111  */
 112 __ASM_GLOBAL_FUNC(MSVCRT__setjmp,
 113                   "mov x1, #0\n\t"  /* frame */
 114                   "b " __ASM_NAME("__wine_setjmpex"));
 115
 116 /*******************************************************************
 117  *              longjmp (MSVCRT.@)
 118  */
 119 void __cdecl MSVCRT_longjmp(_JUMP_BUFFER *jmp, int retval)
 120 {
 121     EXCEPTION_RECORD rec;
 122
 123     if (!retval) retval = 1;
 124     if (jmp->Frame)
 125     {
 126         rec.ExceptionCode = STATUS_LONGJUMP;
 127         rec.ExceptionFlags = 0;
 128         rec.ExceptionRecord = NULL;
 129         rec.ExceptionAddress = NULL;
 130         rec.NumberParameters = 1;
 131         rec.ExceptionInformation[0] = (DWORD_PTR)jmp;
 132         RtlUnwind((void *)jmp->Frame, (void *)jmp->Lr, &rec, IntToPtr(retval));
 133     }
 134     __wine_longjmp( (__wine_jmp_buf *)jmp, retval );
 135 }
 136
 137 /*********************************************************************
 138  *              _fpieee_flt (MSVCRT.@)
 139  */
 140 int __cdecl _fpieee_flt(__msvcrt_ulong exception_code, EXCEPTION_POINTERS *ep,
 141         int (__cdecl *handler)(_FPIEEE_RECORD*))
 142 {
 143     FIXME("(%lx %p %p)\n", exception_code, ep, handler);
 144     return EXCEPTION_CONTINUE_SEARCH;
 145 }
 146
 147 #endif  /* __aarch64__ */