ntdll: Move initialization of the debug registers to signal_i386.c.

dlls/ntdll/signal_i386.c

@@ -2014,6 +2014,7 @@ NTSTATUS signal_alloc_thread( TEB **teb )
 {
     static size_t sigstack_zero_bits;
     struct ntdll_thread_data *thread_data;
+    TEB *parent = NULL;
     SIZE_T size;
     void *addr = NULL;
     NTSTATUS status;
@@ -2027,6 +2028,7 @@ NTSTATUS signal_alloc_thread( TEB **teb )
         signal_stack_mask = (1 << sigstack_zero_bits) - 1;
         signal_stack_size = (1 << sigstack_zero_bits) - teb_size;
     }
+    else parent = NtCurrentTeb();
 
     size = signal_stack_mask + 1;
     if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
@@ -2042,6 +2044,19 @@ NTSTATUS signal_alloc_thread( TEB **teb )
             NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
             status = STATUS_TOO_MANY_THREADS;
         }
+        if (parent)
+        {
+            /* inherit debug registers from parent thread */
+            struct ntdll_thread_regs *parent_regs = (struct ntdll_thread_regs *)parent->SpareBytes1;
+            struct ntdll_thread_regs *thread_regs = (struct ntdll_thread_regs *)(*teb)->SpareBytes1;
+            thread_regs->dr0 = parent_regs->dr0;
+            thread_regs->dr1 = parent_regs->dr1;
+            thread_regs->dr2 = parent_regs->dr2;
+            thread_regs->dr3 = parent_regs->dr3;
+            thread_regs->dr6 = parent_regs->dr6;
+            thread_regs->dr7 = parent_regs->dr7;
+        }
+
     }
     return status;
 }

dlls/ntdll/thread.c

@@ -451,7 +451,6 @@ NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *
     pthread_t pthread_id;
     pthread_attr_t attr;
     struct ntdll_thread_data *thread_data;
-    struct ntdll_thread_regs *thread_regs;
     struct startup_info *info = NULL;
     HANDLE handle = 0;
     TEB *teb = NULL;
@@ -524,20 +523,11 @@ NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *
     info->entry_arg   = param;
 
     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
-    thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
     thread_data->request_fd  = request_pipe[1];
     thread_data->reply_fd    = -1;
     thread_data->wait_fd[0]  = -1;
     thread_data->wait_fd[1]  = -1;
 
-    /* inherit debug registers from parent thread */
-    thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
-    thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
-    thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
-    thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
-    thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
-    thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
-
     if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit ))) goto error;
 
     pthread_attr_init( &attr );