159 lines
4.9 KiB
Diff
159 lines
4.9 KiB
Diff
commit c90363403b57b3b7919061851cb3e6d9c85e784a
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
|
Date: Tue Jan 18 13:53:11 2022 +0100
|
|
|
|
elf: Move _dl_setup_hash to its own file
|
|
|
|
And compile it with the early CFLAGS. _dl_setup_hash is called
|
|
very early for the ld.so link map, so it should be compiled
|
|
differently.
|
|
|
|
Reviewed-by: Stefan Liebler <stli@linux.ibm.com>
|
|
Tested-by: Stefan Liebler <stli@linux.ibm.com>
|
|
|
|
diff --git a/elf/Makefile b/elf/Makefile
|
|
index 778e393395fc5248..948296dc2437e9a1 100644
|
|
--- a/elf/Makefile
|
|
+++ b/elf/Makefile
|
|
@@ -69,6 +69,7 @@ dl-routines = \
|
|
dl-reloc \
|
|
dl-runtime \
|
|
dl-scope \
|
|
+ dl-setup_hash \
|
|
dl-sort-maps \
|
|
dl-thread_gscope_wait \
|
|
dl-tls \
|
|
@@ -154,6 +155,7 @@ CFLAGS-.os += $(call elide-stack-protector,.os,$(all-rtld-routines))
|
|
|
|
# Add the requested compiler flags to the early startup code.
|
|
CFLAGS-dl-printf.os += $(rtld-early-cflags)
|
|
+CFLAGS-dl-setup_hash.os += $(rtld-early-cflags)
|
|
CFLAGS-dl-sysdep.os += $(rtld-early-cflags)
|
|
CFLAGS-dl-tunables.os += $(rtld-early-cflags)
|
|
CFLAGS-dl-write.os += $(rtld-early-cflags)
|
|
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
|
|
index eea217eb2833164c..3391a990c8d288e5 100644
|
|
--- a/elf/dl-lookup.c
|
|
+++ b/elf/dl-lookup.c
|
|
@@ -948,51 +948,6 @@ _dl_lookup_symbol_x (const char *undef_name, struct link_map *undef_map,
|
|
}
|
|
|
|
|
|
-/* Cache the location of MAP's hash table. */
|
|
-
|
|
-void
|
|
-_dl_setup_hash (struct link_map *map)
|
|
-{
|
|
- Elf_Symndx *hash;
|
|
-
|
|
- if (__glibc_likely (map->l_info[ELF_MACHINE_GNU_HASH_ADDRIDX] != NULL))
|
|
- {
|
|
- Elf32_Word *hash32
|
|
- = (void *) D_PTR (map, l_info[ELF_MACHINE_GNU_HASH_ADDRIDX]);
|
|
- map->l_nbuckets = *hash32++;
|
|
- Elf32_Word symbias = *hash32++;
|
|
- Elf32_Word bitmask_nwords = *hash32++;
|
|
- /* Must be a power of two. */
|
|
- assert ((bitmask_nwords & (bitmask_nwords - 1)) == 0);
|
|
- map->l_gnu_bitmask_idxbits = bitmask_nwords - 1;
|
|
- map->l_gnu_shift = *hash32++;
|
|
-
|
|
- map->l_gnu_bitmask = (ElfW(Addr) *) hash32;
|
|
- hash32 += __ELF_NATIVE_CLASS / 32 * bitmask_nwords;
|
|
-
|
|
- map->l_gnu_buckets = hash32;
|
|
- hash32 += map->l_nbuckets;
|
|
- map->l_gnu_chain_zero = hash32 - symbias;
|
|
-
|
|
- /* Initialize MIPS xhash translation table. */
|
|
- ELF_MACHINE_XHASH_SETUP (hash32, symbias, map);
|
|
-
|
|
- return;
|
|
- }
|
|
-
|
|
- if (!map->l_info[DT_HASH])
|
|
- return;
|
|
- hash = (void *) D_PTR (map, l_info[DT_HASH]);
|
|
-
|
|
- map->l_nbuckets = *hash++;
|
|
- /* Skip nchain. */
|
|
- hash++;
|
|
- map->l_buckets = hash;
|
|
- hash += map->l_nbuckets;
|
|
- map->l_chain = hash;
|
|
-}
|
|
-
|
|
-
|
|
static void
|
|
_dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
|
|
const ElfW(Sym) **ref, struct sym_val *value,
|
|
diff --git a/elf/dl-setup_hash.c b/elf/dl-setup_hash.c
|
|
new file mode 100644
|
|
index 0000000000000000..6dd57c5c94e541c2
|
|
--- /dev/null
|
|
+++ b/elf/dl-setup_hash.c
|
|
@@ -0,0 +1,63 @@
|
|
+/* Cache the location of a link map hash table.
|
|
+ Copyright (C) 1995-2022 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
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <assert.h>
|
|
+#include <link.h>
|
|
+#include <ldsodefs.h>
|
|
+
|
|
+void
|
|
+_dl_setup_hash (struct link_map *map)
|
|
+{
|
|
+ Elf_Symndx *hash;
|
|
+
|
|
+ if (__glibc_likely (map->l_info[ELF_MACHINE_GNU_HASH_ADDRIDX] != NULL))
|
|
+ {
|
|
+ Elf32_Word *hash32
|
|
+ = (void *) D_PTR (map, l_info[ELF_MACHINE_GNU_HASH_ADDRIDX]);
|
|
+ map->l_nbuckets = *hash32++;
|
|
+ Elf32_Word symbias = *hash32++;
|
|
+ Elf32_Word bitmask_nwords = *hash32++;
|
|
+ /* Must be a power of two. */
|
|
+ assert ((bitmask_nwords & (bitmask_nwords - 1)) == 0);
|
|
+ map->l_gnu_bitmask_idxbits = bitmask_nwords - 1;
|
|
+ map->l_gnu_shift = *hash32++;
|
|
+
|
|
+ map->l_gnu_bitmask = (ElfW(Addr) *) hash32;
|
|
+ hash32 += __ELF_NATIVE_CLASS / 32 * bitmask_nwords;
|
|
+
|
|
+ map->l_gnu_buckets = hash32;
|
|
+ hash32 += map->l_nbuckets;
|
|
+ map->l_gnu_chain_zero = hash32 - symbias;
|
|
+
|
|
+ /* Initialize MIPS xhash translation table. */
|
|
+ ELF_MACHINE_XHASH_SETUP (hash32, symbias, map);
|
|
+
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ if (!map->l_info[DT_HASH])
|
|
+ return;
|
|
+ hash = (void *) D_PTR (map, l_info[DT_HASH]);
|
|
+
|
|
+ map->l_nbuckets = *hash++;
|
|
+ /* Skip nchain. */
|
|
+ hash++;
|
|
+ map->l_buckets = hash;
|
|
+ hash += map->l_nbuckets;
|
|
+ map->l_chain = hash;
|
|
+}
|