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authorUlrich Drepper <drepper@redhat.com>2002-02-05 08:38:38 +0000
committerUlrich Drepper <drepper@redhat.com>2002-02-05 08:38:38 +0000
commit96f208a4255e322fbd497939e5ddf893b04a5699 (patch)
tree21cc69fd3e43078066398fa8e4821c6e61fba3b8
parenta2f1f5cb89a809e819b64bb9819b845f7c234ae2 (diff)
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Update.
* elf/dl-load.c (_dl_map_object_from_fd): Handle PT_TLS program header entry. * elf/dl-support.c: Define _dl_initimage_list and _dl_tls_module_cnt.
-rw-r--r--ChangeLog3
-rw-r--r--elf/dl-load.c30
-rw-r--r--elf/dl-support.c10
3 files changed, 43 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index fed1b48..4fef0aa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,11 @@
2002-02-05 Ulrich Drepper <drepper@redhat.com>
* elf/rtld.c (dl_main): Read PT_TLS entry of the executable.
+ * elf/dl-load.c (_dl_map_object_from_fd): Handle PT_TLS program
+ header entry.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Add
_dl_tls_module_cnt.
+ * elf/dl-support.c: Define _dl_initimage_list and _dl_tls_module_cnt.
2002-02-04 Ulrich Drepper <drepper@redhat.com>
diff --git a/elf/dl-load.c b/elf/dl-load.c
index cf64ebc..a4e2421 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -938,6 +938,30 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
#endif
}
break;
+
+#ifdef USE_TLS
+ case PT_TLS:
+ l->l_tls_blocksize = ph->p_memsz;
+ 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_offset;
+
+ /* This is the first element of the initialization image list.
+ It is created as a circular list so that we can easily
+ append to it. */
+ if (GL(dl_initimage_list) == NULL)
+ GL(dl_initimage_list) = l->l_tls_nextimage = l;
+ else
+ {
+ l->l_tls_nextimage = GL(dl_initimage_list);
+ GL(dl_initimage_list) = l;
+ }
+
+ /* Assign the next available module ID. */
+ l->l_tls_modid = ++GL(dl_tls_module_cnt);
+ break;
+#endif
}
/* Now process the load commands and map segments into memory. */
@@ -1007,6 +1031,12 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
l->l_map_start = c->mapstart + l->l_addr;
l->l_map_end = l->l_map_start + maplength;
+#ifdef USE_TLS
+ /* Adjust the address of the TLS initialization image. */
+ if (l->l_tls_initimage != NULL)
+ l->l_tls_initimage = (char *) l->l_tls_initimage + l->l_addr;
+#endif
+
while (c < &loadcmds[nloadcmds])
{
if (c->mapend > c->mapstart
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 9a9436e..10446dc 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -137,6 +137,16 @@ int _dl_correct_cache_id = _DL_CACHE_DEFAULT_ID;
At this time it is not anymore a problem to modify the tables. */
__libc_lock_define_initialized_recursive (, _dl_load_lock)
+#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. */
+struct link_map *_dl_initimage_list;
+
+/* Count the number of modules which define TLS data. */
+size_t _dl_tls_module_cnt;
+#endif
+
#ifdef HAVE_AUX_VECTOR
int _dl_clktck;