Update.

2002-02-12  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/generic/dl-tls.c (TLS_DTV_UNALLOCATED): Renamed from
	TLS_DTV_UNALLOCATE.
	(oom): New function.
	(_dl_next_tls_modid): Rewrite to handle dl_tls_dtv_slotinfo_list.
	(_dl_determine_tlsoffset): Likewise.
	(_dl_allocate_tls): Likewise.
	(__TLS_GET_ADDR): Define if not already defined.
	(_dl_tls_symaddr): New function.
	(allocate_and_init): New function.
	(__tls_get_addr): Actually implement handling of generation counter
	and deferred allocation.
	* sysdeps/generic/ldsodefs.h (_rtld_global): Remove _dl_initimage_list,
	add _dl_tls_dtv_slotinfo_list, _dl_tls_static_nelem, and
	_dl_tls_generation.
	Define TLS_SLOTINFO_SURPLUS and DTV_SURPLUS.
	Declare _dl_tls_symaddr.
	* sysdeps/i386/dl-tls.h: Disable __tls_get_addr handling unless
	SHARED.
	* include/link.h (struct link_map):  Remove l_tls_nextimage and
	l_tls_previmage.
	* elf/dl-sym.c (_dl_sym): After successful lookup call _dl_tls_symaddr
	instead of DL_SYMBOL_ADDRESS for STT_TLS symbols.
	(_dl_vsym): Likewise.
	* elf/rtld.c (_dl_start_final): Adjust initdtv initialization for new
	layout.
	(dl_main): Allow PT_TLS be present for empty segment.  Remove
	nextimage list handling.  Instead add all modules using TLS to
	dl_tls_dtv_slotinfo_list.
	* elf/dl-open.c (dl_open_worker): After successfully loading all
	objects add those with TLS to the dl_tls_dtv_slotinfo_list list.
	* elf/dl-load.c (_dl_map_object_from_fd): If PT_TLS entry is for an
	empty segment don't do anything.  Remove handling of initimage list.
	* elf/Versions [ld] (GLIBC_2.0): Add __libc_memalign.
	(GLIBC_PRIVATE): Add _dl_tls_symaddr.
	* elf/dl-minimal.c: Define __libc_memalign.
	* elf/dl-support.c: Remove _dl_initimage_list.  Add
	_dl_tls_dtv_slotinfo_list, _dl_tls_static_nelem, and
	_dl_tls_generation.
	* include/stdlib.h: Declare __libc_memalign.

	* elf/Makefile: Add rules to build and run tst-tls4 and tst-tls5.
	* elf/tst-tls4.c: New file.
	* elf/tst-tls5.c: New file.
	* elf/tst-tlsmod2.c: New file.

	* elf/tls-macros.h: asms using ___tls_get_addr destroy %ecx and %edx.

	* elf/tst-tlsmod1.c: Don't define variables unles USE_TLS.

	* elf/tst-tls1.c: Use test-skeleton.c.
	* elf/tst-tls2.c: Likewise.
	* elf/tst-tls3.c: Likewise.

	* elf/dl-conflict.c (RESOLVE_MAP): Return NULL not 0.

	* sysdeps/mips/machine-gmon.h: Update MCOUNT for current GCC behavior.

1 files changed, 29 insertions, 8 deletions

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index bfad7c6..d722198 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -289,23 +289,40 @@ struct rtld_global
 #endif
 
 #ifdef USE_TLS
-  /* Beginning of the list of link maps for objects which contain
-     thread-local storage sections.  This will be traversed to
-     initialize new TLS blocks.  */
-  EXTERN struct link_map *_dl_initimage_list;
-
   /* 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;
   /* 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)
+
   /* True if the dtv for the initial thread was malloc()ed.  */
   EXTERN bool _dl_initial_dtv_malloced;
+  /* Generation counter for the dtv.  */
+  EXTERN size_t _dl_tls_generation;
 #endif
 
   /* Name of the shared object to be profiled (if any).  */
@@ -667,12 +684,16 @@ extern void _dl_sysdep_start_cleanup (void)
 extern size_t _dl_next_tls_modid (void) internal_function;
 
 /* Calculate offset of the TLS blocks in the static TLS block.  */
-extern void _dl_determine_tlsoffset (struct link_map *firstp)
-     internal_function;
+extern void _dl_determine_tlsoffset (void) internal_function;
 
 /* Allocate memory for static TLS block and dtv.  */
 extern void *_dl_allocate_tls (void) internal_function;
 
+/* Return the symbol address given the map of the module it is in and
+   the symbol record.  */
+extern void *_dl_tls_symaddr (struct link_map *map, const ElfW(Sym) *ref)
+     internal_function;
+
 __END_DECLS
 
 #endif /* ldsodefs.h */