1 files changed, 52 insertions, 0 deletions
diff --git a/private/crt32/startup/tlssup.c b/private/crt32/startup/tlssup.c
new file mode 100644
index 000000000..783ef0d3a
--- /dev/null
+++ b/private/crt32/startup/tlssup.c
@@ -0,0 +1,52 @@
+#ifdef	_MSC_VER
+
+
+/* tlssup.c - Thread Local Storage runtime support module */
+
+#include <nt.h>
+
+/* Thread Local Storage index for this .EXE or .DLL */
+
+ULONG _tls_index = 0;
+
+/* Special symbols to mark start and end of Thread Local Storage area.
+ * By convention, we initialize each with a pointer to it's own address. 
+ */ 
+
+#pragma data_seg(".tls")
+
+PVOID _tls_start = &_tls_start;
+
+#pragma data_seg(".tls$ZZZ")
+
+PVOID _tls_end = &_tls_end;
+
+/* Start and end sections for Threadl Local Storage CallBack Array.
+ * Actual array is constructed using .CRT$XLA, .CRT$XLC, .CRT$XLL, 
+ * .CRT$XLU, .CRT$XLZ similar to the way global
+ *         static initializers are done for C++.
+ */
+
+#pragma data_seg(".CRT$XLA")
+
+PIMAGE_TLS_CALLBACK __xl_a = 0;
+
+#pragma data_seg(".CRT$XLZ")
+
+PIMAGE_TLS_CALLBACK __xl_z = 0;
+
+
+#pragma data_seg(".rdata$T")
+
+IMAGE_TLS_DIRECTORY _tls_used =
+{
+	(ULONG) &_tls_start,	// start of tls data
+	(ULONG) &_tls_end,	// end of tls data
+	&_tls_index,		// address of tls_index
+	&__xl_a, 		// pointer to call back array
+	(ULONG) 0,		// size of tls zero fill
+	(ULONG) 0		// characteristics
+};
+
+
+#endif	/* _MSC_VER */