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authorAlan Modra <amodra@gmail.com>2002-07-25 06:54:51 +0000
committerAlan Modra <amodra@gmail.com>2002-07-25 06:54:51 +0000
commit8c58d23b6d454082b0e55ccb2a948397ab4b58c8 (patch)
tree6875b3e59ffda2ae412d37c033acf16dcf9bfbac /bfd/elflink.c
parent8c554d79d1d9d2ee28545381da20e7a88133266e (diff)
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* elf-bfd.h (_bfd_elf32_link_record_local_dynamic_symbol): Define
as elf_link_record_local_dynamic_symbol. (_bfd_elf64_link_record_local_dynamic_symbol): Likewise. (elf_link_record_local_dynamic_symbol): Declare. Now returns int. * elflink.h (elf_link_record_local_dynamic_symbol): Move to.. * elflink.c: .. here. Use bfd_elf_get_elf_syms. Check whether an attempt is made to record a symbol in a discarded section, and return `2' in that case.
Diffstat (limited to 'bfd/elflink.c')
-rw-r--r--bfd/elflink.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/bfd/elflink.c b/bfd/elflink.c
index c32ff1c..f8cc645 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -302,6 +302,98 @@ _bfd_elf_link_record_dynamic_symbol (info, h)
return true;
}
+/* Record a new local dynamic symbol. Returns 0 on failure, 1 on
+ success, and 2 on a failure caused by attempting to record a symbol
+ in a discarded section, eg. a discarded link-once section symbol. */
+
+int
+elf_link_record_local_dynamic_symbol (info, input_bfd, input_indx)
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ long input_indx;
+{
+ bfd_size_type amt;
+ struct elf_link_local_dynamic_entry *entry;
+ struct elf_link_hash_table *eht;
+ struct elf_strtab_hash *dynstr;
+ unsigned long dynstr_index;
+ char *name;
+ Elf_External_Sym_Shndx eshndx;
+ char esym[sizeof (Elf64_External_Sym)];
+
+ if (! is_elf_hash_table (info))
+ return 0;
+
+ /* See if the entry exists already. */
+ for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
+ if (entry->input_bfd == input_bfd && entry->input_indx == input_indx)
+ return 1;
+
+ amt = sizeof (*entry);
+ entry = (struct elf_link_local_dynamic_entry *) bfd_alloc (input_bfd, amt);
+ if (entry == NULL)
+ return 0;
+
+ /* Go find the symbol, so that we can find it's name. */
+ if (!bfd_elf_get_elf_syms (input_bfd, &elf_tdata (input_bfd)->symtab_hdr,
+ (size_t) 1, (size_t) input_indx,
+ &entry->isym, esym, &eshndx))
+ {
+ bfd_release (input_bfd, entry);
+ return 0;
+ }
+
+ if (entry->isym.st_shndx != SHN_UNDEF
+ && (entry->isym.st_shndx < SHN_LORESERVE
+ || entry->isym.st_shndx > SHN_HIRESERVE))
+ {
+ asection *s;
+
+ s = bfd_section_from_elf_index (input_bfd, entry->isym.st_shndx);
+ if (s == NULL || bfd_is_abs_section (s->output_section))
+ {
+ /* We can still bfd_release here as nothing has done another
+ bfd_alloc. We can't do this later in this function. */
+ bfd_release (input_bfd, entry);
+ return 2;
+ }
+ }
+
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, elf_tdata (input_bfd)->symtab_hdr.sh_link,
+ entry->isym.st_name));
+
+ dynstr = elf_hash_table (info)->dynstr;
+ if (dynstr == NULL)
+ {
+ /* Create a strtab to hold the dynamic symbol names. */
+ elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
+ if (dynstr == NULL)
+ return 0;
+ }
+
+ dynstr_index = _bfd_elf_strtab_add (dynstr, name, false);
+ if (dynstr_index == (unsigned long) -1)
+ return 0;
+ entry->isym.st_name = dynstr_index;
+
+ eht = elf_hash_table (info);
+
+ entry->next = eht->dynlocal;
+ eht->dynlocal = entry;
+ entry->input_bfd = input_bfd;
+ entry->input_indx = input_indx;
+ eht->dynsymcount++;
+
+ /* Whatever binding the symbol had before, it's now local. */
+ entry->isym.st_info
+ = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info));
+
+ /* The dynindx will be set at the end of size_dynamic_sections. */
+
+ return 1;
+}
+
/* Return the dynindex of a local dynamic symbol. */
long