wow64: Add a thunk for the wine_server_call() syscall.

dlls/wow64/struct32.h

@@ -21,6 +21,8 @@
 #ifndef __WOW64_STRUCT32_H
 #define __WOW64_STRUCT32_H
 
+#include "wine/server.h"
+
 typedef struct
 {
     ULONG Length;
@@ -633,4 +635,22 @@ typedef struct
     SYSTEM_THREAD_INFORMATION32 ti[1];
 } SYSTEM_PROCESS_INFORMATION32;
 
+struct __server_iovec32
+{
+    ULONG        ptr;
+    data_size_t  size;
+};
+
+struct __server_request_info32
+{
+    union
+    {
+        union generic_request req;
+        union generic_reply   reply;
+    } u;
+    unsigned int            data_count;
+    ULONG                   reply_data;
+    struct __server_iovec32 data[__SERVER_MAX_DATA];
+};
+
 #endif /* __WOW64_STRUCT32_H */

dlls/wow64/syscall.c

@@ -243,6 +243,31 @@ NTSTATUS WINAPI wow64_NtSetDefaultUILanguage( UINT *args )
 
 
 /**********************************************************************
+ *           wow64_wine_server_call
+ */
+NTSTATUS WINAPI wow64_wine_server_call( UINT *args )
+{
+    struct __server_request_info32 *req32 = get_ptr( &args );
+
+    unsigned int i;
+    NTSTATUS status;
+    struct __server_request_info req;
+
+    req.u.req = req32->u.req;
+    req.data_count = req32->data_count;
+    for (i = 0; i < req.data_count; i++)
+    {
+        req.data[i].ptr = ULongToPtr( req32->data[i].ptr );
+        req.data[i].size = req32->data[i].size;
+    }
+    req.reply_data = ULongToPtr( req32->reply_data );
+    status = wine_server_call( &req );
+    req32->u.reply = req.u.reply;
+    return status;
+}
+
+
+/**********************************************************************
  *           get_syscall_num
  */
 static DWORD get_syscall_num( const BYTE *syscall )

dlls/wow64/syscall.h

@@ -235,6 +235,7 @@
     SYSCALL_ENTRY( NtWriteVirtualMemory ) \
     SYSCALL_ENTRY( NtYieldExecution ) \
     SYSCALL_ENTRY( wine_nt_to_unix_file_name ) \
+    SYSCALL_ENTRY( wine_server_call ) \
     SYSCALL_ENTRY( wine_unix_to_nt_file_name )
 
 #endif /* __WOW64_SYSCALL_H */