[PATCH] ntdll: Don't constraint TEB address to 2GB for native x64 process.

[Paul Gofman]

Signed-off-by: Paul Gofman 
---
 dlls/ntdll/unix/virtual.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index 756a7388a22..3dc06d520dd 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -2985,6 +2985,7 @@ static TEB *init_teb( void *ptr, BOOL is_wow )
  */
 TEB *virtual_alloc_first_teb(void)
 {
+    static const BOOL is_wow = FALSE;
     void *ptr;
     NTSTATUS status;
     SIZE_T data_size = page_size;
@@ -3000,14 +3001,14 @@ TEB *virtual_alloc_first_teb(void)
         exit(1);
     }

-    NtAllocateVirtualMemory( NtCurrentProcess(), &teb_block, is_win64 ? 0x7fffffff : 0, &total,
+    NtAllocateVirtualMemory( NtCurrentProcess(), &teb_block, is_win64 && is_wow ? 0x7fffffff : 0, &total,
                              MEM_RESERVE | MEM_TOP_DOWN, PAGE_READWRITE );
     teb_block_pos = 30;
     ptr = (char *)teb_block + 30 * block_size;
     data_size = 2 * block_size;
     NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&ptr, 0, &data_size, MEM_COMMIT, PAGE_READWRITE );
     peb = (PEB *)((char *)teb_block + 31 * block_size + (is_win64 ? 0 : page_size));
-    return init_teb( ptr, FALSE );
+    return init_teb( ptr, is_wow );
 }

@@ -3021,6 +3022,7 @@ NTSTATUS virtual_alloc_teb( TEB **ret_teb )
     void *ptr = NULL;
     NTSTATUS status = STATUS_SUCCESS;
     SIZE_T block_size = signal_stack_mask + 1;
+    BOOL is_wow = !!NtCurrentTeb()->WowTebOffset;

server_enter_uninterrupted_section( &virtual_mutex, &sigset );
     if (next_free_teb)
@@ -3035,7 +3037,7 @@ NTSTATUS virtual_alloc_teb( TEB **ret_teb )
         {
             SIZE_T total = 32 * block_size;

-            if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, is_win64 ? 0x7fffffff : 0,
+            if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, is_win64 && is_wow ? 0x7fffffff : 0,
                                                    &total, MEM_RESERVE, PAGE_READWRITE )))
             {
                 server_leave_uninterrupted_section( &virtual_mutex, &sigset );
@@ -3048,7 +3050,7 @@ NTSTATUS virtual_alloc_teb( TEB **ret_teb )
         NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&ptr, 0, &block_size,
                                  MEM_COMMIT, PAGE_READWRITE );
     }
-    *ret_teb = teb = init_teb( ptr, !!NtCurrentTeb()->WowTebOffset );
+    *ret_teb = teb = init_teb( ptr, is_wow );
     server_leave_uninterrupted_section( &virtual_mutex, &sigset );

if ((status = signal_alloc_thread( teb )))

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=101286

Your paranoid android.

=== debiant2 (64 bit WoW report) ===

ntdll:
env.c:461: Test failed: wrong end ptr 000000000024195C/0000000000241960