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-rw-r--r--elf/Versions2
-rw-r--r--elf/dl-close.c33
-rw-r--r--elf/dl-load.c56
-rw-r--r--elf/dl-tsd.c6
-rw-r--r--elf/rtld.c10
-rw-r--r--elf/tst-tls4.c8
-rw-r--r--elf/tst-tls5.c9
-rw-r--r--elf/tst-tls6.c9
-rw-r--r--elf/tst-tls7.c9
-rw-r--r--elf/tst-tls8.c9
-rw-r--r--elf/tst-tls9.c10
11 files changed, 71 insertions, 90 deletions
diff --git a/elf/Versions b/elf/Versions
index 18d007f6f1..b9e99f27fd 100644
--- a/elf/Versions
+++ b/elf/Versions
@@ -51,6 +51,6 @@ ld {
_dl_unload_cache;
_rtld_global; _dl_tls_symaddr; _dl_allocate_tls; _dl_deallocate_tls;
_dl_get_tls_static_info; _dl_allocate_tls_init;
- _dl_get_origin;
+ _dl_get_origin; _dl_tls_setup;
}
}
diff --git a/elf/dl-close.c b/elf/dl-close.c
index b5c2841d61..0a6265f142 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -429,28 +429,28 @@ libc_hidden_def (_dl_close)
#ifdef USE_TLS
static bool
-free_slotinfo (struct dtv_slotinfo_list *elemp)
+free_slotinfo (struct dtv_slotinfo_list **elemp)
{
size_t cnt;
- if (elemp == NULL)
+ if (*elemp == NULL)
/* Nothing here, all is removed (or there never was anything). */
return true;
- if (!free_slotinfo (elemp->next))
+ if (!free_slotinfo (&(*elemp)->next))
/* We cannot free the entry. */
return false;
- /* The least we could do is remove next element (if there was any). */
- elemp->next = NULL;
+ /* That cleared our next pointer for us. */
- for (cnt = 0; cnt < elemp->len; ++cnt)
- if (elemp->slotinfo[cnt].map != NULL)
+ for (cnt = 0; cnt < (*elemp)->len; ++cnt)
+ if ((*elemp)->slotinfo[cnt].map != NULL)
/* Still used. */
return false;
/* We can remove the list element. */
- free (elemp);
+ free (*elemp);
+ *elemp = NULL;
return true;
}
@@ -479,12 +479,17 @@ libc_freeres_fn (free_mem)
if (USE___THREAD || GL(dl_tls_dtv_slotinfo_list) != NULL)
{
/* Free the memory allocated for the dtv slotinfo array. We can do
- this only if all modules which used this memory are unloaded.
- Also, the first element of the list does not have to be
- deallocated. It was allocated in the dynamic linker (i.e., with
- a different malloc). */
- if (free_slotinfo (GL(dl_tls_dtv_slotinfo_list)->next))
- GL(dl_tls_dtv_slotinfo_list)->next = NULL;
+ this only if all modules which used this memory are unloaded. */
+# ifdef SHARED
+ if (GL(dl_initial_dtv) == NULL)
+ /* There was no initial TLS setup, it was set up later when
+ it used the normal malloc. */
+ free_slotinfo (&GL(dl_tls_dtv_slotinfo_list));
+# endif
+ /* The first element of the list does not have to be deallocated.
+ It was allocated in the dynamic linker (i.e., with a different
+ malloc), and in the static library it's in .bss space. */
+ free_slotinfo (&GL(dl_tls_dtv_slotinfo_list)->next);
}
#endif
}
diff --git a/elf/dl-load.c b/elf/dl-load.c
index c550204ac5..d80f30813f 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -946,32 +946,64 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
/* Nothing to do for an empty segment. */
break;
+ l->l_tls_blocksize = ph->p_memsz;
+ l->l_tls_align = ph->p_align;
+ l->l_tls_initimage_size = ph->p_filesz;
+ /* Since we don't know the load address yet only store the
+ offset. We will adjust it later. */
+ l->l_tls_initimage = (void *) ph->p_vaddr;
+
/* If not loading the initial set of shared libraries,
check whether we should permit loading a TLS segment. */
- if (
-# ifdef SHARED
- __builtin_expect (l->l_type == lt_library, 1) ||
-# endif
+ if (__builtin_expect (l->l_type == lt_library, 1)
/* If GL(dl_tls_max_dtv_idx) == 0, then rtld.c did not
set up TLS data structures, so don't use them now. */
- __builtin_expect (GL(dl_tls_max_dtv_idx), 1) != 0)
+ || __builtin_expect (GL(dl_tls_max_dtv_idx), 1) != 0)
{
- l->l_tls_blocksize = ph->p_memsz;
- l->l_tls_align = ph->p_align;
- l->l_tls_initimage_size = ph->p_filesz;
- /* Since we don't know the load address yet only store the
- offset. We will adjust it later. */
- l->l_tls_initimage = (void *) ph->p_vaddr;
-
/* Assign the next available module ID. */
l->l_tls_modid = _dl_next_tls_modid ();
break;
}
+# ifdef SHARED
if (l->l_prev == NULL)
/* We are loading the executable itself when the dynamic linker
was executed directly. The setup will happen later. */
break;
+
+ /* In a static binary there is no way to tell if we dynamically
+ loaded libpthread. */
+ if (GL(dl_error_catch_tsd) == &_dl_initial_error_catch_tsd)
+# endif
+ {
+ /* We have not yet loaded libpthread.
+ We can do the TLS setup right now! */
+
+ void *tcb;
+
+ /* The first call allocates TLS bookkeeping data structures.
+ Then we allocate the TCB for the initial thread. */
+ if (__builtin_expect (_dl_tls_setup (), 0)
+ || __builtin_expect ((tcb = _dl_allocate_tls (NULL)) == NULL,
+ 0))
+ {
+ errval = ENOMEM;
+ errstring = N_("\
+cannot allocate TLS data structures for initial thread");
+ goto call_lose;
+ }
+
+ /* Now we install the TCB in the thread register. */
+ if (__builtin_expect (TLS_INIT_TP (tcb, 0), 0) != -1)
+ {
+ /* Now we are all good. */
+ l->l_tls_modid = ++GL(dl_tls_max_dtv_idx);
+ break;
+ }
+
+ /* The kernel is too old or somesuch. */
+ _dl_deallocate_tls (tcb, 1);
+ }
#endif
/* Uh-oh, the binary expects TLS support but we cannot
diff --git a/elf/dl-tsd.c b/elf/dl-tsd.c
index c60cd1a760..f44fa7d365 100644
--- a/elf/dl-tsd.c
+++ b/elf/dl-tsd.c
@@ -27,8 +27,8 @@
/* _dl_error_catch_tsd points to this for the single-threaded case.
It's reset by the thread library for multithreaded programs
if we're not using __thread. */
-static void ** __attribute__ ((const))
-startup_error_tsd (void)
+void ** __attribute__ ((const))
+_dl_initial_error_catch_tsd (void)
{
# if USE___THREAD
static __thread void *data;
@@ -38,7 +38,7 @@ startup_error_tsd (void)
return &data;
}
void **(*_dl_error_catch_tsd) (void) __attribute__ ((const))
- = &startup_error_tsd;
+ = &_dl_initial_error_catch_tsd;
# elif USE___THREAD
diff --git a/elf/rtld.c b/elf/rtld.c
index 6e20e15fff..f1886431b8 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -563,8 +563,8 @@ match_version (const char *string, struct link_map *map)
#ifdef _LIBC_REENTRANT
/* _dl_error_catch_tsd points to this for the single-threaded case.
It's reset by the thread library for multithreaded programs. */
-static void ** __attribute__ ((const))
-startup_error_tsd (void)
+void ** __attribute__ ((const))
+_dl_initial_error_catch_tsd (void)
{
static void *data;
return &data;
@@ -602,7 +602,7 @@ dl_main (const ElfW(Phdr) *phdr,
#ifdef _LIBC_REENTRANT
/* Explicit initialization since the reloc would just be more work. */
- GL(dl_error_catch_tsd) = &startup_error_tsd;
+ GL(dl_error_catch_tsd) = &_dl_initial_error_catch_tsd;
#endif
/* Process the environment variable which control the behaviour. */
@@ -1180,9 +1180,7 @@ of this helper program; chances are you did not intend to run this program.\n\
slotinfo[++i].map = l;
assert (i == GL(dl_tls_max_dtv_idx));
- /* Compute the TLS offsets for the various blocks. We call this
- function even if none of the modules available at startup time
- uses TLS to initialize some variables. */
+ /* Compute the TLS offsets for the various blocks. */
_dl_determine_tlsoffset ();
/* Construct the static TLS block and the dtv for the initial
diff --git a/elf/tst-tls4.c b/elf/tst-tls4.c
index 32ec147420..f92ee53ce5 100644
--- a/elf/tst-tls4.c
+++ b/elf/tst-tls4.c
@@ -4,14 +4,6 @@
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
#define TEST_FUNCTION do_test ()
static int
diff --git a/elf/tst-tls5.c b/elf/tst-tls5.c
index c10015d94d..a571d2cd3f 100644
--- a/elf/tst-tls5.c
+++ b/elf/tst-tls5.c
@@ -4,15 +4,6 @@
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
-
#define TEST_FUNCTION do_test ()
static int
diff --git a/elf/tst-tls6.c b/elf/tst-tls6.c
index 3c5c7aae4e..2c015efebb 100644
--- a/elf/tst-tls6.c
+++ b/elf/tst-tls6.c
@@ -5,15 +5,6 @@
#include <link.h>
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
-
#define TEST_FUNCTION do_test ()
static int
diff --git a/elf/tst-tls7.c b/elf/tst-tls7.c
index 77d2016d08..4f785fe78e 100644
--- a/elf/tst-tls7.c
+++ b/elf/tst-tls7.c
@@ -5,15 +5,6 @@
#include <link.h>
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
-
#define TEST_FUNCTION do_test ()
static int
diff --git a/elf/tst-tls8.c b/elf/tst-tls8.c
index 7444c261ec..e300bc53d8 100644
--- a/elf/tst-tls8.c
+++ b/elf/tst-tls8.c
@@ -5,15 +5,6 @@
#include <link.h>
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
-
#define TEST_FUNCTION do_test ()
static int
diff --git a/elf/tst-tls9.c b/elf/tst-tls9.c
index a679efcd63..e317696dfc 100644
--- a/elf/tst-tls9.c
+++ b/elf/tst-tls9.c
@@ -5,16 +5,6 @@
#include <link.h>
#include <tls.h>
-#ifdef USE_TLS
-# include "tls-macros.h"
-
-/* This gives the executable a TLS segment so that even if the libc.so
- it loads has none (i.e. --with-tls --without-__thread), ld.so will
- permit loading of objects with TLS segments. */
-COMMON_INT_DEF(loser);
-#endif
-
-
#define TEST_FUNCTION do_test ()
static int
do_test (void)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 09:25:23 +0000