Alexandre Julliard : wow64: Push a valid return address when calling KiRaiseUserExceptionDispatcher.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 96841d0358fe35c448fce4ad494a1db98f3f2e7a
URL:    https://gitlab.winehq.org/wine/wine/-/commit/96841d0358fe35c448fce4ad494a1db...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Tue Mar  7 17:21:40 2023 +0100

wow64: Push a valid return address when calling KiRaiseUserExceptionDispatcher.

---

 dlls/wow64/syscall.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/wow64/syscall.c b/dlls/wow64/syscall.c
index 1feeac083d9..de5a42aec4f 100644
--- a/dlls/wow64/syscall.c
+++ b/dlls/wow64/syscall.c
@@ -278,6 +278,8 @@ static void call_raise_user_exception_dispatcher( ULONG code )
             I386_CONTEXT ctx = { CONTEXT_I386_ALL };
 
             pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
+            ctx.Esp -= sizeof(ULONG);
+            *(ULONG *)ULongToPtr( ctx.Esp ) = ctx.Eip;
             ctx.Eip = (ULONG_PTR)pKiRaiseUserExceptionDispatcher;
             pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
         }