65 lines
2.1 KiB
Diff
65 lines
2.1 KiB
Diff
--- binutils.orig/bfd/elfxx-x86.c 2018-05-14 12:22:29.149657093 +0100
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+++ binutils-2.30/bfd/elfxx-x86.c 2018-05-14 12:25:16.244700009 +0100
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@@ -839,6 +839,33 @@ _bfd_x86_elf_compare_relocs (const void
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return 0;
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}
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+/* Mark symbol, NAME, as locally defined by linker if it is referenced
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+ and not defined in a relocatable object file. */
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+
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+static void
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+elf_x86_linker_defined (struct bfd_link_info *info, const char *name)
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+{
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+ struct elf_link_hash_entry *h;
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+
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+ h = elf_link_hash_lookup (elf_hash_table (info), name,
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+ FALSE, FALSE, FALSE);
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+ if (h == NULL)
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+ return;
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+
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+ while (h->root.type == bfd_link_hash_indirect)
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+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
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+
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+ if (h->root.type == bfd_link_hash_new
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+ || h->root.type == bfd_link_hash_undefined
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+ || h->root.type == bfd_link_hash_undefweak
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+ || h->root.type == bfd_link_hash_common
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+ || (!h->def_regular && h->def_dynamic))
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+ {
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+ elf_x86_hash_entry (h)->local_ref = 2;
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+ elf_x86_hash_entry (h)->linker_def = 1;
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+ }
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+}
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+
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bfd_boolean
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_bfd_x86_elf_link_check_relocs (bfd *abfd, struct bfd_link_info *info)
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{
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@@ -869,18 +896,16 @@ _bfd_x86_elf_link_check_relocs (bfd *abf
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/* "__ehdr_start" will be defined by linker as a hidden symbol
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later if it is referenced and not defined. */
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- h = elf_link_hash_lookup (elf_hash_table (info),
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- "__ehdr_start",
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- FALSE, FALSE, FALSE);
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- if (h != NULL
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- && (h->root.type == bfd_link_hash_new
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- || h->root.type == bfd_link_hash_undefined
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- || h->root.type == bfd_link_hash_undefweak
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- || h->root.type == bfd_link_hash_common))
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+ elf_x86_linker_defined (info, "__ehdr_start");
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+
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+ if (bfd_link_executable (info))
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{
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- elf_x86_hash_entry (h)->local_ref = 2;
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- elf_x86_hash_entry (h)->linker_def = 1;
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- }
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+ /* References to __bss_start, _end and _edata should be
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+ locally resolved within executables. */
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+ elf_x86_linker_defined (info, "__bss_start");
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+ elf_x86_linker_defined (info, "_end");
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+ elf_x86_linker_defined (info, "_edata");
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+ }
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}
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}
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