[CPPRT][CRT][MSVCRT] Move __CxxFrameHandler3 to crt and export it on NT6

Previously it was in cpprt, which is a support library for C++, containing functions that are not exported by msvcrt. But since Vista __CxxFrameHandler3 is exported by msvcrt. Therefore move it to crt, and to satisfy pre-Vista configurations, also add it to msvcrtex.

sdk/lib/crt/except/amd64/__CxxFrameHandler3.s

@@ -0,0 +1,15 @@
+
+#include <asm.inc>
+
+.code64
+.align 4
+
+MACRO(DEFINE_ALIAS, alias, orig)
+EXTERN &orig : PROC
+ALIAS <&alias> = <&orig>
+ENDM
+
+; These are the same
+DEFINE_ALIAS __CxxFrameHandler3, __CxxFrameHandler
+
+END

sdk/lib/crt/except/except.cmake

@@ -4,9 +4,13 @@ if(ARCH STREQUAL "i386")
         except/i386/chkstk_asm.s
     )
     list(APPEND CRT_EXCEPT_ASM_SOURCE
+        except/i386/__CxxFrameHandler3.s
         except/i386/chkesp.s
         except/i386/prolog.s
     )
+    list(APPEND CRT_EXCEPT_SOURCE
+        except/i386/CxxHandleV8Frame.c
+    )
     if(MSVC)
         list(APPEND CRT_EXCEPT_ASM_SOURCE
             except/i386/cpp.s)

sdk/lib/crt/except/i386/CxxHandleV8Frame.c

@@ -0,0 +1,46 @@
+/*
+ * PROJECT:         ReactOS C++ runtime library
+ * LICENSE:         GPLv2+ - See COPYING in the top level directory
+ * PURPOSE:         __CxxFrameHandler3 to __CxxFrameHandler wrapper
+ * PROGRAMMER:      Thomas Faber (thomas.faber@reactos.org)
+ */
+
+#define WIN32_NO_STATUS
+#include <windef.h>
+#include <winbase.h>
+#include <ndk/rtltypes.h>
+
+#define WINE_NO_TRACE_MSGS
+#include <wine/debug.h>
+#include <wine/exception.h>
+#include <internal/wine/msvcrt.h>
+#include <internal/wine/cppexcept.h>
+
+extern DWORD CDECL CallCxxFrameHandler(PEXCEPTION_RECORD rec, EXCEPTION_REGISTRATION_RECORD *frame,
+                                       PCONTEXT context, EXCEPTION_REGISTRATION_RECORD **dispatch,
+                                       const cxx_function_descr *descr);
+
+DWORD
+__stdcall
+CxxHandleV8Frame(
+    _In_ PEXCEPTION_RECORD rec,
+    _In_ EXCEPTION_REGISTRATION_RECORD *frame,
+    _In_ PCONTEXT context,
+    _In_ EXCEPTION_REGISTRATION_RECORD **dispatch,
+    _In_ const cxx_function_descr *descr)
+{
+    cxx_function_descr stub_descr;
+
+    if (descr->magic != CXX_FRAME_MAGIC_VC8)
+        return CallCxxFrameHandler(rec, frame, context, dispatch, descr);
+
+    if ((descr->flags & FUNC_DESCR_SYNCHRONOUS) &&
+        (rec->ExceptionCode != CXX_EXCEPTION))
+    {
+        return ExceptionContinueSearch;  /* handle only c++ exceptions */
+    }
+
+    stub_descr = *descr;
+    stub_descr.magic = CXX_FRAME_MAGIC_VC7;
+    return CallCxxFrameHandler(rec, frame, context, dispatch, &stub_descr);
+}

sdk/lib/crt/except/i386/__CxxFrameHandler3.s

@@ -0,0 +1,26 @@
+
+
+#include <asm.inc>
+
+.code
+.align 4
+
+EXTERN _CxxHandleV8Frame@20 : PROC
+PUBLIC ___CxxFrameHandler3
+___CxxFrameHandler3:
+    push eax
+    push dword ptr [esp + 20]
+    push dword ptr [esp + 20]
+    push dword ptr [esp + 20]
+    push dword ptr [esp + 20]
+    call _CxxHandleV8Frame@20
+    ret
+
+EXTERN ___CxxFrameHandler : PROC
+PUBLIC _CallCxxFrameHandler
+_CallCxxFrameHandler:
+    mov eax, dword ptr [esp + 20]
+    jmp ___CxxFrameHandler
+
+END
+

sdk/lib/crt/msvcrtex.cmake

@@ -36,9 +36,20 @@ if(ARCH STREQUAL "i386")
         list(APPEND MSVCRTEX_SOURCE
             math/i386/sqrtf.c)
     endif()
+    if(MSVC AND DLL_EXPORT_VERSION LESS 0x600)
+        list(APPEND MSVCRTEX_ASM_SOURCE
+            except/i386/__CxxFrameHandler3.s)
+        list(APPEND MSVCRTEX_SOURCE
+            except/i386/CxxHandleV8Frame.c)
+    endif()
 elseif(ARCH STREQUAL "amd64")
     list(APPEND MSVCRTEX_ASM_SOURCE
         except/amd64/chkstk_ms.s)
+    if(MSVC AND DLL_EXPORT_VERSION LESS 0x600)
+        list(APPEND MSVCRTEX_ASM_SOURCE
+            except/amd64/__CxxFrameHandler3.s
+        )
+    endif()
 elseif(ARCH STREQUAL "arm")
     list(APPEND MSVCRTEX_SOURCE
         math/arm/__rt_sdiv.c