hurd: add TLS support

	* sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR):
	Define macro.
	* sysdeps/mach/thread_state.h (MACHINE_THREAD_STATE_FIX_NEW): New macro.
	* sysdeps/mach/i386/thread_state.h
	(MACHINE_NEW_THREAD_STATE_FLAVOR): New macro, defined to
	i386_THREAD_STATE.
	(MACHINE_THREAD_STATE_FLAVOR): Define to i386_REGS_SEGS_STATE instead of
	i386_THREAD_STATE.
	(MACHINE_THREAD_STATE_FIX_NEW): New macro, reads segments.

	* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Use
	i386_REGS_SEGS_STATE instead of i386_THREAD_STATE.

	* sysdeps/mach/hurd/i386/tls.h (TCB_ALIGNMENT, HURD_SEL_LDT): New
	macros.
	(_hurd_tls_fork): Add original thread parameter, Duplicate existing LDT
	descriptor instead of creating a new one.
	(_hurd_tls_new): New function, creates a new descriptor and updates tcb.

	* mach/setup-thread.c: Include <ldsodefs.h>.
	(__mach_setup_thread): Call _dl_allocate_tls, pass
	MACHINE_NEW_THREAD_STATE_FLAVOR to __thread_set_state instead of
	MACHINE_THREAD_STATE_FLAVOR, before getting
	MACHINE_THREAD_STATE_FLAVOR, calling _hurd_tls_new, and setting
	MACHINE_THREAD_STATE_FLAVOR with the result.
	* hurd/hurdfault.c (_hurdsig_fault_init): Call
	MACHINE_THREAD_STATE_FIX_NEW.
	* sysdeps/mach/hurd/fork.c (__fork): Call _hurd_tls_fork for sigthread
	too.  Add original thread parameter.

1 files changed, 21 insertions, 2 deletions

diff --git a/mach/setup-thread.c b/mach/setup-thread.c
index 2eeacc2c2e..6716813825 100644
--- a/mach/setup-thread.c
+++ b/mach/setup-thread.c
@@ -19,6 +19,7 @@
 #include <thread_state.h>
 #include <string.h>
 #include <mach/machine/vm_param.h>
+#include <ldsodefs.h>
 #include "sysdep.h"		/* Defines stack direction.  */
 
 #define	STACK_SIZE	(16 * 1024 * 1024) /* 16MB, arbitrary.  */
@@ -41,6 +42,7 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
   vm_address_t stack;
   vm_size_t size;
   int anywhere;
+  tcbhead_t *tcb;
 
   size = stack_size ? *stack_size ? : STACK_SIZE : STACK_SIZE;
   stack = stack_base ? *stack_base ? : 0 : 0;
@@ -50,6 +52,10 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
   if (error)
     return error;
 
+  tcb = _dl_allocate_tls(NULL);
+  if (tcb == NULL)
+    return KERN_RESOURCE_SHORTAGE;
+
   if (stack_size)
     *stack_size = size;
 
@@ -72,8 +78,21 @@ __mach_setup_thread (task_t task, thread_t thread, void *pc,
   if (error = __vm_protect (task, stack, __vm_page_size, 0, VM_PROT_NONE))
     return error;
 
-  return __thread_set_state (thread, MACHINE_THREAD_STATE_FLAVOR,
-			     (natural_t *) &ts, tssize);
+  if (error = __thread_set_state (thread, MACHINE_NEW_THREAD_STATE_FLAVOR,
+			     (natural_t *) &ts, tssize))
+    return error;
+
+  if (error = __thread_get_state (thread, MACHINE_THREAD_STATE_FLAVOR,
+			     (natural_t *) &ts, &tssize))
+    return error;
+  assert (tssize == MACHINE_THREAD_STATE_COUNT);
+
+  _hurd_tls_new(thread, &ts, tcb);
+
+  error = __thread_set_state (thread, MACHINE_THREAD_STATE_FLAVOR,
+			      (natural_t *) &ts, tssize);
+
+  return error;
 }
 
 weak_alias (__mach_setup_thread, mach_setup_thread)