hurd: Add tlsdesc.sym

	* sysdeps/mach/hurd/i386/tlsdesc.sym: New file.

Author: sthibaul

ChangeLog

@@ -29,6 +29,7 @@
 	* bits/fcntl.h: Fix comment for FREAD and FWRITE.
 	* sysdeps/mach/hurd/bits/fcntl.h: Likewise.
 	* sysdeps/mach/hurd/hp-timing.h: New file.
+	* sysdeps/mach/hurd/i386/tlsdesc.sym: New file.
 
 2018-01-29  Darius Rad  <[email protected]>
 

sysdeps/mach/hurd/i386/tlsdesc.sym

@@ -0,0 +1,19 @@
+#include <stddef.h>
+#include <sysdep.h>
+#include <tls.h>
+#include <link.h>
+#include <dl-tlsdesc.h>
+
+--
+
+-- We have to override sysdeps/i386/tlsdesc.sym to adapt to our libpthread.
+
+-- Abuse tls.h macros to derive offsets relative to the thread register.
+
+DTV_OFFSET			offsetof(tcbhead_t, dtv)
+
+TLSDESC_ARG			offsetof(struct tlsdesc, arg)
+
+TLSDESC_GEN_COUNT		offsetof(struct tlsdesc_dynamic_arg, gen_count)
+TLSDESC_MODID			offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_module)
+TLSDESC_MODOFF			offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_offset)