Alexandre Julliard : ntdll/tests: Add some more tests for the contents of the WOW64INFO structure.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 572cc841a60a5cc0219b8dbf7cb614a0ee6f3456
URL:    https://gitlab.winehq.org/wine/wine/-/commit/572cc841a60a5cc0219b8dbf7cb614a...

Author: Alexandre Julliard 
Date:   Thu Aug 17 13:54:02 2023 +0200

ntdll/tests: Add some more tests for the contents of the WOW64INFO structure.

---

dlls/ntdll/tests/wow64.c | 22 ++++++++++++++++++++++
 include/winternl.h       | 16 +++++++++-------
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/dlls/ntdll/tests/wow64.c b/dlls/ntdll/tests/wow64.c
index 300494849b9..0689e7a530a 100644
--- a/dlls/ntdll/tests/wow64.c
+++ b/dlls/ntdll/tests/wow64.c
@@ -414,6 +414,28 @@ static void test_peb_teb(void)
                 }
                 ok( i < limit, "wow64info not found in PEB\n" );
             }
+            if (wow64info->SectionHandle && wow64info->CrossProcessWorkList)
+            {
+                HANDLE handle;
+                void *data, *addr = NULL;
+                SIZE_T size = 0;
+
+                ret = DuplicateHandle( pi.hProcess, (HANDLE)(ULONG_PTR)wow64info->SectionHandle,
+                                       GetCurrentProcess(), &handle, 0, FALSE, DUPLICATE_SAME_ACCESS );
+                ok( ret, "DuplicateHandle failed %lu\n", GetLastError() );
+                status = NtMapViewOfSection( handle, GetCurrentProcess(), &addr, 0, 0, NULL,
+                                             &size, ViewShare, 0, PAGE_READWRITE );
+                ok( !status, "NtMapViewOfSection failed %lx\n", status );
+                data = malloc( size );
+                ret = ReadProcessMemory( pi.hProcess, (void *)(ULONG_PTR)wow64info->CrossProcessWorkList,
+                                         data, size, &size );
+                ok( ret, "ReadProcessMemory failed %lu\n", GetLastError() );
+                ok( !memcmp( data, addr, size ), "wrong data\n" );
+                free( data );
+                UnmapViewOfFile( addr );
+                CloseHandle( handle );
+            }
+            else trace( "no WOW64INFO section handle\n" );
         }
         else win_skip( "RtlWow64GetSharedInfoProcess not supported\n" );

diff --git a/include/winternl.h b/include/winternl.h
index 62ccdd6c95a..4b58d481603 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -4103,14 +4103,16 @@ typedef struct _WOW64_CPU_AREA_INFO

typedef struct _WOW64INFO
 {
-    ULONG   NativeSystemPageSize;
-    ULONG   CpuFlags;
-    ULONG   Wow64ExecuteFlags;
-    ULONG   unknown[5];
-    USHORT  NativeMachineType;
-    USHORT  EmulatedMachineType;
-    ULONG   unknown2;
+    ULONG     NativeSystemPageSize;
+    ULONG     CpuFlags;
+    ULONG     Wow64ExecuteFlags;
+    ULONG     unknown;
+    ULONGLONG SectionHandle;
+    ULONGLONG CrossProcessWorkList;
+    USHORT    NativeMachineType;
+    USHORT    EmulatedMachineType;
 } WOW64INFO;
+C_ASSERT( sizeof(WOW64INFO) == 40 );

#define WOW64_CPUFLAGS_MSFT64   0x01
 #define WOW64_CPUFLAGS_SOFTWARE 0x02