diff options
Diffstat (limited to 'sysdeps/generic/dl-tls.c')
| -rw-r--r-- | sysdeps/generic/dl-tls.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-tls.c b/sysdeps/generic/dl-tls.c index 850df8d76f..550de56530 100644 --- a/sysdeps/generic/dl-tls.c +++ b/sysdeps/generic/dl-tls.c @@ -110,6 +110,7 @@ _dl_next_tls_modid (void) return result; } +# ifdef SHARED void internal_function @@ -204,6 +205,41 @@ _dl_determine_tlsoffset (void) } +/* This is called only when the data structure setup was skipped at startup, + when there was no need for it then. Now we have dynamically loaded + something needing TLS, or libpthread needs it. */ +int +internal_function +_dl_tls_setup (void) +{ + assert (GL(dl_tls_dtv_slotinfo_list) == NULL); + assert (GL(dl_tls_max_dtv_idx) == 0); + + const size_t nelem = 2 + TLS_SLOTINFO_SURPLUS; + + GL(dl_tls_dtv_slotinfo_list) = + malloc (sizeof (struct dtv_slotinfo_list) + + nelem * sizeof (struct dtv_slotinfo)); + if (GL(dl_tls_dtv_slotinfo_list) == NULL) + return -1; + + memset (GL(dl_tls_dtv_slotinfo_list)->slotinfo, '\0', + nelem * sizeof (struct dtv_slotinfo)); + GL(dl_tls_dtv_slotinfo_list)->len = nelem; + GL(dl_tls_dtv_slotinfo_list)->next = NULL; + + /* Number of elements in the static TLS block. It can't be zero + because of various assumptions. The one element is null. */ + GL(dl_tls_static_nelem) = GL(dl_tls_max_dtv_idx) = 1; + + /* This initializes more variables for us. */ + _dl_determine_tlsoffset (); + + return 0; +} +rtld_hidden_def (_dl_tls_setup) +# endif + static void * internal_function allocate_dtv (void *result) |