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* elf/tst-tls-dlinfo.c: New file.

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* elf/Makefile (tests): Add it.
	($(objpfx)tst-tls-dlinfo): Depend on $(libdl).
	($(objpfx)tst-tls-dlinfo.out): Depend on $(objpfx)tst-tlsmod2.so.

	* dlfcn/dlfcn.h (RTLD_DI_PROFILENAME, RTLD_DI_PROFILEOUT): New enum
	values, reserve unsupported requested names used on Solaris.
	(RTLD_DI_TLS_MODID, RTLD_DI_TLS_DATA): New enum values.
	(RTLD_DI_MAX): Likewise.
	* dlfcn/dlinfo.c (dlinfo_doit): Handle RTLD_DI_TLS_MODID and
	RTLD_DI_TLS_DATA.

	* elf/dl-tls.c (_dl_tls_get_addr_soft): New function.
	* sysdeps/generic/ldsodefs.h: Declare it.
	* elf/Versions (ld: GLIBC_PRIVATE): Add it.
	* elf/link.h (struct dl_phdr_info): New members dlpi_tls_modid,
	dlpi_tls_data.
	* elf/dl-iteratephdr.c (__dl_iterate_phdr): Fill them in.

	* include/link.h: Don't copy contents from elf/link.h.
	Instead, #include it while #define'ing around link_map.
	* elf/dl-debug.c (_dl_debug_initialize): Add a cast.
	Add bogus extern decl to verify link_map members.
	* elf/loadtest.c (MAPS): New macro, cast _r_debug._r_map.
	(OUT, main): Use it in place of _r_debug._r_map.
	* elf/unload.c: Likewise.
	* elf/unload2.c: Likewise.
	* elf/neededtest.c (check_loaded_objects): Likewise.
	* elf/neededtest2.c (check_loaded_objects): Likewise.
	* elf/neededtest3.c (check_loaded_objects): Likewise.
	* elf/neededtest4.c (check_loaded_objects): Likewise.
	* elf/circleload1.c (check_loaded_objects): Likewise.
This commit is contained in:
Roland McGrath
2006-03-01 06:18:49 +00:00
parent 0b890d59bd
commit d78efd9f36
20 changed files with 313 additions and 136 deletions
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48
elf/dl-tls.c
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@ -1,5 +1,5 @@
/* Thread-local storage handling in the ELF dynamic linker. Generic version.
Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright (C) 2002,2003,2004,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -735,9 +735,53 @@ __tls_get_addr (GET_ADDR_ARGS)
# endif
/* Look up the module's TLS block as for __tls_get_addr,
but never touch anything. Return null if it's not allocated yet. */
void *
internal_function
_dl_tls_get_addr_soft (struct link_map *l)
{
if (__builtin_expect (l->l_tls_modid == 0, 0))
/* This module has no TLS segment. */
return NULL;
dtv_t *dtv = THREAD_DTV ();
if (__builtin_expect (dtv[0].counter != GL(dl_tls_generation), 0))
{
/* This thread's DTV is not completely current,
but it might already cover this module. */
if (l->l_tls_modid >= dtv[-1].counter)
/* Nope. */
return NULL;
size_t idx = l->l_tls_modid;
struct dtv_slotinfo_list *listp = GL(dl_tls_dtv_slotinfo_list);
while (idx >= listp->len)
{
idx -= listp->len;
listp = listp->next;
}
/* We've reached the slot for this module.
If its generation counter is higher than the DTV's,
this thread does not know about this module yet. */
if (dtv[0].counter < listp->slotinfo[idx].gen)
return NULL;
}
void *data = dtv[l->l_tls_modid].pointer.val;
if (__builtin_expect (data == TLS_DTV_UNALLOCATED, 0))
/* The DTV is current, but this thread has not yet needed
to allocate this module's segment. */
data = NULL;
return data;
}
void
_dl_add_to_slotinfo (struct link_map *l)
_dl_add_to_slotinfo (struct link_map *l)
{
/* Now that we know the object is loaded successfully add
modules containing TLS data to the dtv info table. We