wine-staging/patches/wow64cpu-Wow64Transition/0002-ntdll-Add-a-stub-implementation-of-Wow64Transition.patch

From 503f898967ffdf8e3b7eff12faf2adf4f2fc4a25 Mon Sep 17 00:00:00 2001
From: Zebediah Figura <z.figura12@gmail.com>
Date: Wed, 8 Aug 2018 20:00:15 -0500
Subject: [PATCH] ntdll: Add a stub implementation of Wow64Transition.

---
 dlls/ntdll/loader.c   | 12 +++++++++++-
 dlls/ntdll/ntdll.spec |  1 +
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index 3586bd44d96..1f74b029cac 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -4418,12 +4418,14 @@ BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
     return TRUE;
 }
 
+void *Wow64Transition;
 
 /***********************************************************************
  *           __wine_process_init
  */
 void __wine_process_init(void)
 {
+    static const WCHAR wow64cpuW[] = {'w','o','w','6','4','c','p','u','.','d','l','l',0};
     static const WCHAR ntdllW[] = {'\\','?','?','\\','C',':','\\','w','i','n','d','o','w','s','\\',
                                    's','y','s','t','e','m','3','2','\\',
                                    'n','t','d','l','l','.','d','l','l',0};
@@ -4432,7 +4434,7 @@ void __wine_process_init(void)
                                       'k','e','r','n','e','l','3','2','.','d','l','l',0};
     RTL_USER_PROCESS_PARAMETERS *params;
     ACTIVATION_CONTEXT_RUN_LEVEL_INFORMATION runlevel;
-    WINE_MODREF *wm;
+    WINE_MODREF *wm, *wow64cpu_wm;
     NTSTATUS status;
     ANSI_STRING func_name;
     UNICODE_STRING nt_name;
@@ -4480,7 +4482,15 @@ void __wine_process_init(void)
         MESSAGE( "wine: could not load kernel32.dll, status %x\n", status );
         exit(1);
     }
+
+    RtlInitUnicodeString( &nt_name, wow64cpuW );
+    if ((status = load_builtin_dll( NULL, &nt_name, 0, 0, &wow64cpu_wm )) == STATUS_SUCCESS)
+        Wow64Transition = wow64cpu_wm->ldr.BaseAddress;
+    else
+        WARN( "could not load wow64cpu.dll, status %#x\n", status );
+
     RtlInitAnsiString( &func_name, "__wine_start_process" );
+
     if ((status = LdrGetProcedureAddress( wm->ldr.BaseAddress, &func_name,
                                           0, (void **)&kernel32_start_process )) != STATUS_SUCCESS)
     {
diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index 39a2407e5bd..dc70320653b 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -1100,6 +1100,7 @@
 @ stdcall WinSqmIsOptedIn()
 @ stdcall WinSqmSetDWORD(ptr long long)
 @ stdcall WinSqmStartSession(ptr long long)
+@ extern Wow64Transition
 @ stdcall -private ZwAcceptConnectPort(ptr long ptr long ptr ptr) NtAcceptConnectPort
 @ stdcall -private ZwAccessCheck(ptr long long ptr ptr ptr ptr ptr) NtAccessCheck
 @ stdcall -private ZwAccessCheckAndAuditAlarm(ptr long ptr ptr ptr long ptr long ptr ptr ptr) NtAccessCheckAndAuditAlarm
-- 
2.25.1