2002-12-04 Roland McGrath <roland@redhat.com>

	* sysdeps/generic/ldsodefs.h (struct rtld_global): Move all [USE_TLS]
	members to the end, so a libpthread compiled with !USE_TLS will still
	find other members properly.
	* sysdeps/generic/dl-tls.c [SHARED] (_dl_tls_setup): New function.
	* sysdeps/generic/ldsodefs.h: Declare it.
	* elf/Versions (ld: GLIBC_PRIVATE): Add it.
	* sysdeps/generic/libc-tls.c (init_slotinfo): New static inline
	function, broken out of __libc_setup_tls.
	(init_static_tls): Likewise.
	(__libc_setup_tls): Call them.
	(_dl_tls_setup): New function, uses new subroutines.
	* sysdeps/generic/ldsodefs.h (_dl_next_tls_modid): Declare as hidden.
	(_dl_determine_tlsoffset): Likewise.
	* elf/rtld.c (_dl_initial_error_catch_tsd): Renamed from
	startup_error_tsd, made global.
	(dl_main): Update initialization.
	* elf/dl-tsd.c: Likewise.
	* sysdeps/generic/ldsodefs.h: Declare it.

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 8321b96..5e08844 100644 (file)
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -293,45 +293,6 @@ struct rtld_global
   EXTERN hp_timing_t _dl_hp_timing_overhead;
 #endif
 
-#ifdef USE_TLS
-  /* Highest dtv index currently needed.  */
-  EXTERN size_t _dl_tls_max_dtv_idx;
-  /* Flag signalling whether there are gaps in the module ID allocation.  */
-  EXTERN bool _dl_tls_dtv_gaps;
-  /* Information about the dtv slots.  */
-  EXTERN struct dtv_slotinfo_list
-  {
-    size_t len;
-    struct dtv_slotinfo_list *next;
-    struct dtv_slotinfo
-    {
-      size_t gen;
-      struct link_map *map;
-    } slotinfo[0];
-  } *_dl_tls_dtv_slotinfo_list;
-  /* Number of modules in the static TLS block.  */
-  EXTERN size_t _dl_tls_static_nelem;
-  /* Size of the static TLS block.  */
-  EXTERN size_t _dl_tls_static_size;
-  /* Size actually allocated in the static TLS block.  */
-  EXTERN size_t _dl_tls_static_used;
-  /* Alignment requirement of the static TLS block.  */
-  EXTERN size_t _dl_tls_static_align;
-
-/* Number of additional entries in the slotinfo array of each slotinfo
-   list element.  A large number makes it almost certain take we never
-   have to iterate beyond the first element in the slotinfo list.  */
-# define TLS_SLOTINFO_SURPLUS (62)
-
-/* Number of additional slots in the dtv allocated.  */
-# define DTV_SURPLUS   (14)
-
-  /* Initial dtv of the main thread, not allocated with normal malloc.  */
-  EXTERN void *_dl_initial_dtv;
-  /* Generation counter for the dtv.  */
-  EXTERN size_t _dl_tls_generation;
-#endif
-
   /* Name of the shared object to be profiled (if any).  */
   EXTERN const char *_dl_profile;
   /* Map of shared object to be profiled.  */
@@ -369,6 +330,10 @@ struct rtld_global
   /* File descriptor to write debug messages to.  */
   EXTERN int _dl_debug_fd;
 
+#ifdef _LIBC_REENTRANT
+  EXTERN void **(*_dl_error_catch_tsd) (void) __attribute__ ((const));
+#endif
+
   /* Get architecture specific definitions.  */
 #define PROCINFO_DECL
 #include <dl-procinfo.c>
@@ -376,9 +341,49 @@ struct rtld_global
   /* Structure describing the dynamic linker itself.  */
   EXTERN struct link_map _dl_rtld_map;
 
-#ifdef _LIBC_REENTRANT
-  EXTERN void **(*_dl_error_catch_tsd) (void) __attribute__ ((const));
+  /* Keep the conditional TLS members at the end so the layout of the
+     structure used by !USE_TLS code matches the prefix of the layout in
+     the USE_TLS rtld.  Note that `struct link_map' is conditionally
+     defined as well, so _dl_rtld_map needs to be last before this.  */
+#ifdef USE_TLS
+  /* Highest dtv index currently needed.  */
+  EXTERN size_t _dl_tls_max_dtv_idx;
+  /* Flag signalling whether there are gaps in the module ID allocation.  */
+  EXTERN bool _dl_tls_dtv_gaps;
+  /* Information about the dtv slots.  */
+  EXTERN struct dtv_slotinfo_list
+  {
+    size_t len;
+    struct dtv_slotinfo_list *next;
+    struct dtv_slotinfo
+    {
+      size_t gen;
+      struct link_map *map;
+    } slotinfo[0];
+  } *_dl_tls_dtv_slotinfo_list;
+  /* Number of modules in the static TLS block.  */
+  EXTERN size_t _dl_tls_static_nelem;
+  /* Size of the static TLS block.  */
+  EXTERN size_t _dl_tls_static_size;
+  /* Size actually allocated in the static TLS block.  */
+  EXTERN size_t _dl_tls_static_used;
+  /* Alignment requirement of the static TLS block.  */
+  EXTERN size_t _dl_tls_static_align;
+
+/* Number of additional entries in the slotinfo array of each slotinfo
+   list element.  A large number makes it almost certain take we never
+   have to iterate beyond the first element in the slotinfo list.  */
+# define TLS_SLOTINFO_SURPLUS (62)
+
+/* Number of additional slots in the dtv allocated.  */
+# define DTV_SURPLUS   (14)
+
+  /* Initial dtv of the main thread, not allocated with normal malloc.  */
+  EXTERN void *_dl_initial_dtv;
+  /* Generation counter for the dtv.  */
+  EXTERN size_t _dl_tls_generation;
 #endif
+
 #ifdef SHARED
 };
 # define __rtld_global_attribute__
@@ -401,6 +406,13 @@ extern struct rtld_global _rtld_global __rtld_global_attribute__;
 #endif
 #undef EXTERN
 
+#ifdef IS_IN_rtld
+/* This is the initial value of GL(dl_error_catch_tsd).
+   A non-TLS libpthread will change it.  */
+extern void **_dl_initial_error_catch_tsd (void) __attribute__ ((const))
+     attribute_hidden;
+#endif
+
 /* Parameters passed to the dynamic linker.  */
 extern int _dl_argc attribute_hidden;
 extern char **_dl_argv;
@@ -739,10 +751,16 @@ extern void _dl_sysdep_start_cleanup (void)
 
 
 /* Determine next available module ID.  */
-extern size_t _dl_next_tls_modid (void) internal_function;
+extern size_t _dl_next_tls_modid (void) internal_function attribute_hidden;
 
 /* Calculate offset of the TLS blocks in the static TLS block.  */
-extern void _dl_determine_tlsoffset (void) internal_function;
+extern void _dl_determine_tlsoffset (void) internal_function attribute_hidden;
+
+/* Set up the data structures for TLS, when they were not set up at startup.
+   Returns nonzero on malloc failure.
+   This is called from _dl_map_object_from_fd or by libpthread.  */
+extern int _dl_tls_setup (void) internal_function;
+rtld_hidden_proto (_dl_tls_setup)
 
 /* Allocate memory for static TLS block (unless MEM is nonzero) and dtv.  */
 extern void *_dl_allocate_tls (void *mem) internal_function;
@@ -754,9 +772,9 @@ extern void _dl_get_tls_static_info (size_t *sizep, size_t *alignp)
 /* These are internal entry points to the two halves of _dl_allocate_tls,
    only used within rtld.c itself at startup time.  */
 extern void *_dl_allocate_tls_storage (void)
-  internal_function attribute_hidden;
+     internal_function attribute_hidden;
 extern void *_dl_allocate_tls_init (void *) internal_function;
-rtld_hidden_proto (_dl_allocate_tls_init);
+rtld_hidden_proto (_dl_allocate_tls_init)
 
 /* Deallocate memory allocated with _dl_allocate_tls.  */
 extern void _dl_deallocate_tls (void *tcb, bool dealloc_tcb) internal_function;