From 23081203348ee9b93e6deb1bd986697807450219 Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Fri, 20 Aug 2021 15:07:06 +0200
Subject: [PATCH] wow64: Forward 64-bit invalid handle exceptions to the 32-bit
 guest.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/wow64/process.c       | 21 +++++++++++++++++++++
 dlls/wow64/syscall.c       | 17 ++++++++++++++++-
 dlls/wow64/wow64.spec      |  2 +-
 dlls/wow64/wow64_private.h |  5 +++--
 4 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/dlls/wow64/process.c b/dlls/wow64/process.c
index 5e0fedd136f..d66b973385b 100644
--- a/dlls/wow64/process.c
+++ b/dlls/wow64/process.c
@@ -1251,3 +1251,24 @@ NTSTATUS WINAPI wow64_NtTerminateThread( UINT *args )
 
     return NtTerminateThread( handle, exit_code );
 }
+
+
+/**********************************************************************
+ *           Wow64PassExceptionToGuest  (wow64.@)
+ */
+void WINAPI Wow64PassExceptionToGuest( EXCEPTION_POINTERS *ptrs )
+{
+    EXCEPTION_RECORD *rec = ptrs->ExceptionRecord;
+    EXCEPTION_RECORD32 rec32;
+    ULONG i;
+
+    rec32.ExceptionCode    = rec->ExceptionCode;
+    rec32.ExceptionFlags   = rec->ExceptionFlags;
+    rec32.ExceptionRecord  = PtrToUlong( rec->ExceptionRecord );
+    rec32.ExceptionAddress = PtrToUlong( rec->ExceptionAddress );
+    rec32.NumberParameters = rec->NumberParameters;
+    for (i = 0; i < rec->NumberParameters; i++)
+        rec32.ExceptionInformation[i] = rec->ExceptionInformation[i];
+
+    call_user_exception_dispatcher( &rec32, NULL, ptrs->ContextRecord );
+}
diff --git a/dlls/wow64/syscall.c b/dlls/wow64/syscall.c
index 62399225042..91f2a029e4b 100644
--- a/dlls/wow64/syscall.c
+++ b/dlls/wow64/syscall.c
@@ -519,6 +519,21 @@ static void free_temp_data(void)
 }
 
 
+/**********************************************************************
+ *           syscall_filter
+ */
+static LONG CALLBACK syscall_filter( EXCEPTION_POINTERS *ptrs )
+{
+    switch (ptrs->ExceptionRecord->ExceptionCode)
+    {
+    case STATUS_INVALID_HANDLE:
+        Wow64PassExceptionToGuest( ptrs );
+        break;
+    }
+    return EXCEPTION_EXECUTE_HANDLER;
+}
+
+
 /**********************************************************************
  *           Wow64SystemServiceEx  (NTDLL.@)
  */
@@ -536,7 +551,7 @@ NTSTATUS WINAPI Wow64SystemServiceEx( UINT num, UINT *args )
         syscall_thunk thunk = syscall_thunks[syscall_map[num]];
         status = thunk( args );
     }
-    __EXCEPT_ALL
+    __EXCEPT( syscall_filter )
     {
         status = GetExceptionCode();
     }
diff --git a/dlls/wow64/wow64.spec b/dlls/wow64/wow64.spec
index 4ed20af0f29..69275b2580f 100644
--- a/dlls/wow64/wow64.spec
+++ b/dlls/wow64/wow64.spec
@@ -13,7 +13,7 @@
 @ stdcall Wow64LdrpInitialize(ptr)
 @ stub Wow64LogPrint
 @ stub Wow64NotifyUnsimulateComplete
-@ stub Wow64PassExceptionToGuest
+@ stdcall Wow64PassExceptionToGuest(ptr)
 @ stub Wow64PrepareForDebuggerAttach
 @ stub Wow64PrepareForException
 @ stub Wow64RaiseException
diff --git a/dlls/wow64/wow64_private.h b/dlls/wow64/wow64_private.h
index 3b44c513fa3..370ae76a0c4 100644
--- a/dlls/wow64/wow64_private.h
+++ b/dlls/wow64/wow64_private.h
@@ -28,8 +28,9 @@
 ALL_SYSCALLS
 #undef SYSCALL_ENTRY
 
-void * WINAPI Wow64AllocateTemp( SIZE_T size ) DECLSPEC_HIDDEN;
-void   WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CONTEXT *context ) DECLSPEC_HIDDEN;
+void * WINAPI Wow64AllocateTemp( SIZE_T size );
+void   WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CONTEXT *context );
+void   WINAPI Wow64PassExceptionToGuest( EXCEPTION_POINTERS *ptrs );
 
 extern void init_file_redirects(void) DECLSPEC_HIDDEN;
 extern BOOL get_file_redirect( OBJECT_ATTRIBUTES *attr ) DECLSPEC_HIDDEN;