2003-03-10 Roland McGrath <roland@redhat.com>

	* allocatestack.c (allocate_stack) [!TLS_MULTIPLE_THREADS_IN_TCB]:
	Instead of setting PD->multiple_threads, set globals
	__pthread_multiple_threads and __libc_multiple_threads.
	* sysdeps/pthread/createthread.c (create_thread): Likewise.
	* sysdeps/i386/tls.h (TLS_MULTIPLE_THREADS_IN_TCB): Define it.
	* sysdeps/s390/tls.h (TLS_MULTIPLE_THREADS_IN_TCB): Likewise.
	* descr.h (struct pthread): Conditionalize first member on
	[!TLS_DTV_AT_TP].  Replace the `header' member with an anonymous union
	containing an anonymous tcbhead_t.  Move `list' member out.
	[TLS_MULTIPLE_THREADS_IN_TCB]: Define a `multiple_threads' member.
	* allocatestack.c: Remove use of `header.data.' prefix.
	* pthread_create.c: Likewise.
	* init.c (__pthread_initialize_minimal_internal): Likewise.
	* sysdeps/pthread/createthread.c (create_thread): Likewise.
	* sysdeps/i386/tls.h (INSTALL_DTV): Add parens.
	(THREAD_SELF, THREAD_DTV, INSTALL_NEW_DTV): No `header.data.' prefix.
	* sysdeps/x86_64/tls.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
	(SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
	(SINGLE_THREAD_P): Likewise.
	* sysdeps/i386/tls.h (tcbhead_t): Remove `list' member.
	* sysdeps/s390/tls.h (tcbhead_t): Likewise.

1 files changed, 11 insertions, 16 deletions

diff --git a/nptl/descr.h b/nptl/descr.h
index f189a6ed7b..cbaa38fc3c 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -31,6 +31,7 @@
 #include <pthreaddef.h>
 #include <dl-sysdep.h>
 #include "../nptl_db/thread_db.h"
+#include <tls.h>
 
 
 #ifndef TCB_ALIGNMENT
@@ -56,25 +57,19 @@
 /* Thread descriptor data structure.  */
 struct pthread
 {
-  /* XXX Remove this union for IA-64 style TLS module */
+#if !TLS_DTV_AT_TP
+  /* This overlaps tcbhead_t (see tls.h), as used for TLS without threads.  */
   union
   {
-    /* It is very important to always append new elements.  The offsets
-       of some of the elements of the struct are used in assembler code.  */
-    struct
-    {
-      void *tcb;                /* Pointer to the TCB.  This is not always
-                                   the address of this thread descriptor.  */
-      union dtv *dtvp;
-      struct pthread *self;       /* Pointer to this structure */
-      int multiple_threads;
-#ifdef NEED_DL_SYSINFO
-      uintptr_t sysinfo;
-#endif
-      list_t list;
-    } data;
+    tcbhead_t;
     void *__padding[16];
-  } header;
+  };
+#elif TLS_MULTIPLE_THREADS_IN_TCB
+  int multiple_threads;
+#endif
+
+  /* This descriptor's link on the `stack_used' or `__stack_user' list.  */
+  list_t list;
 
   /* Thread ID - which is also a 'is this thread descriptor (and
      therefore stack) used' flag.  */