Update.Update.

2003-05-20  Jakub Jelinek  <jakub@redhat.com>

	* elf/dynamic-link.h (elf_get_dynamic_info): Add temp argument.
	If temp != NULL, copy dynamic entries which need relocation to temp
	array before relocating.
	(DL_RO_DYN_TEMP_CNT): Define.
	* elf/dl-load.c (_dl_map_object_from_fd): Adjust caller.
	* elf/rtld.c (_dl_start): Likewise.
	(dl_main): Likewise.  Add dyn_temp static variable.

3 files changed, 36 insertions, 21 deletions

diff --git a/elf/dl-load.c b/elf/dl-load.c
index 290236b..8b0c82b 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -1268,7 +1268,7 @@ cannot allocate TLS data structures for initial thread");
 			   (unsigned long int) l->l_phdr,
 			   (int) sizeof (void *) * 2, l->l_phnum);
 
-  elf_get_dynamic_info (l);
+  elf_get_dynamic_info (l, NULL);
 
   /* Make sure we are not dlopen'ing an object
      that has the DF_1_NOOPEN flag set.  */
diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h
index 63adfcb..5bf3f6f 100644
--- a/elf/dynamic-link.h
+++ b/elf/dynamic-link.h
@@ -56,7 +56,7 @@ elf_machine_lazy_rel (struct link_map *map,
 /* Read the dynamic section at DYN and fill in INFO with indices DT_*.  */
 
 static inline void __attribute__ ((unused, always_inline))
-elf_get_dynamic_info (struct link_map *l)
+elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
 {
   ElfW(Dyn) *dyn = l->l_ld;
   ElfW(Dyn) **info;
@@ -88,32 +88,45 @@ elf_get_dynamic_info (struct link_map *l)
 	     + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM] = dyn;
       ++dyn;
     }
+
+#define DL_RO_DYN_TEMP_CNT	8
+
 #ifndef DL_RO_DYN_SECTION
   /* Don't adjust .dynamic unnecessarily.  */
   if (l->l_addr != 0)
     {
       ElfW(Addr) l_addr = l->l_addr;
+      int cnt = 0;
+
+# define ADJUST_DYN_INFO(tag) \
+      do								      \
+	if (info[tag] != NULL)						      \
+	  {								      \
+	    if (temp)							      \
+	      {								      \
+		temp[cnt].d_tag = info[tag]->d_tag;			      \
+		temp[cnt].d_un.d_ptr = info[tag]->d_un.d_ptr + l_addr;	      \
+		info[tag] = temp + cnt++;				      \
+	      }								      \
+	    else							      \
+	      info[tag]->d_un.d_ptr += l_addr;				      \
+	  }								      \
+      while (0)
 
-      if (info[DT_HASH] != NULL)
-	info[DT_HASH]->d_un.d_ptr += l_addr;
-      if (info[DT_PLTGOT] != NULL)
-	info[DT_PLTGOT]->d_un.d_ptr += l_addr;
-      if (info[DT_STRTAB] != NULL)
-	info[DT_STRTAB]->d_un.d_ptr += l_addr;
-      if (info[DT_SYMTAB] != NULL)
-	info[DT_SYMTAB]->d_un.d_ptr += l_addr;
+      ADJUST_DYN_INFO (DT_HASH);
+      ADJUST_DYN_INFO (DT_PLTGOT);
+      ADJUST_DYN_INFO (DT_STRTAB);
+      ADJUST_DYN_INFO (DT_SYMTAB);
 # if ! ELF_MACHINE_NO_RELA
-      if (info[DT_RELA] != NULL)
-	info[DT_RELA]->d_un.d_ptr += l_addr;
+      ADJUST_DYN_INFO (DT_RELA);
 # endif
 # if ! ELF_MACHINE_NO_REL
-      if (info[DT_REL] != NULL)
-	info[DT_REL]->d_un.d_ptr += l_addr;
+      ADJUST_DYN_INFO (DT_REL);
 # endif
-      if (info[DT_JMPREL] != NULL)
-	info[DT_JMPREL]->d_un.d_ptr += l_addr;
-      if (info[VERSYMIDX (DT_VERSYM)] != NULL)
-	info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr += l_addr;
+      ADJUST_DYN_INFO (DT_JMPREL);
+      ADJUST_DYN_INFO (VERSYMIDX (DT_VERSYM));
+# undef ADJUST_DYN_INFO
+      assert (cnt <= DL_RO_DYN_TEMP_CNT);
     }
 #endif
   if (info[DT_PLTREL] != NULL)
diff --git a/elf/rtld.c b/elf/rtld.c
index a0d8e98..367a9dc 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -317,7 +317,7 @@ _dl_start (void *arg)
 
   /* Read our own dynamic section and fill in the info array.  */
   bootstrap_map.l_ld = (void *) bootstrap_map.l_addr + elf_machine_dynamic ();
-  elf_get_dynamic_info (&bootstrap_map);
+  elf_get_dynamic_info (&bootstrap_map, NULL);
 
 #if defined USE_TLS && NO_TLS_OFFSET != 0
   bootstrap_map.l_tls_offset = NO_TLS_OFFSET;
@@ -892,7 +892,7 @@ of this helper program; chances are you did not intend to run this program.\n\
   if (! rtld_is_main)
     {
       /* Extract the contents of the dynamic section for easy access.  */
-      elf_get_dynamic_info (GL(dl_loaded));
+      elf_get_dynamic_info (GL(dl_loaded), NULL);
       if (GL(dl_loaded)->l_info[DT_HASH])
 	/* Set up our cache of pointers into the hash table.  */
 	_dl_setup_hash (GL(dl_loaded));
@@ -1083,6 +1083,8 @@ of this helper program; chances are you did not intend to run this program.\n\
       struct link_map *l = _dl_new_object ((char *) "", "", lt_library, NULL);
       if (__builtin_expect (l != NULL, 1))
 	{
+	  static ElfW(Dyn) dyn_temp [DL_RO_DYN_TEMP_CNT];
+
 	  l->l_phdr = ((const void *) GL(dl_sysinfo_dso)
 		       + GL(dl_sysinfo_dso)->e_phoff);
 	  l->l_phnum = GL(dl_sysinfo_dso)->e_phnum;
@@ -1098,7 +1100,7 @@ of this helper program; chances are you did not intend to run this program.\n\
 	      if (ph->p_type == PT_LOAD)
 		assert ((void *) ph->p_vaddr == GL(dl_sysinfo_dso));
 	    }
-	  elf_get_dynamic_info (l);
+	  elf_get_dynamic_info (l, dyn_temp);
 	  _dl_setup_hash (l);
 	  l->l_relocated = 1;