diff options
Diffstat (limited to 'bfd/elflink.c')
| -rw-r--r-- | bfd/elflink.c | 42 |
1 files changed, 28 insertions, 14 deletions
diff --git a/bfd/elflink.c b/bfd/elflink.c index cca0c67..9eb1122 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -64,7 +64,7 @@ _bfd_elf_link_keep_memory (struct bfd_link_info *info) this is opt-in by each backend. */ const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); - if (bed->use_mmap) + if (bed != NULL && bed->use_mmap) return false; #endif bfd *abfd; @@ -2247,16 +2247,19 @@ _bfd_elf_export_symbol (struct elf_link_hash_entry *h, void *data) /* Return the glibc version reference if VERSION_DEP is added to the list of glibc version dependencies successfully. VERSION_DEP will - be put into the .gnu.version_r section. */ + be put into the .gnu.version_r section. GLIBC_MINOR_BASE is the + pointer to the glibc minor base version. */ static Elf_Internal_Verneed * elf_link_add_glibc_verneed (struct elf_find_verdep_info *rinfo, Elf_Internal_Verneed *glibc_verref, - const char *version_dep) + const char *version_dep, + int *glibc_minor_base) { Elf_Internal_Verneed *t; Elf_Internal_Vernaux *a; size_t amt; + int minor_version = -1; if (glibc_verref != NULL) { @@ -2272,8 +2275,6 @@ elf_link_add_glibc_verneed (struct elf_find_verdep_info *rinfo, } else { - bool is_glibc; - for (t = elf_tdata (rinfo->info->output_bfd)->verref; t != NULL; t = t->vn_nextref) @@ -2287,7 +2288,6 @@ elf_link_add_glibc_verneed (struct elf_find_verdep_info *rinfo, if (t == NULL) return t; - is_glibc = false; for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) { /* Return if VERSION_DEP dependency has been added. */ @@ -2296,12 +2296,24 @@ elf_link_add_glibc_verneed (struct elf_find_verdep_info *rinfo, return t; /* Check if libc.so provides GLIBC_2.XX version. */ - if (!is_glibc && startswith (a->vna_nodename, "GLIBC_2.")) - is_glibc = true; + if (startswith (a->vna_nodename, "GLIBC_2.")) + { + minor_version = strtol (a->vna_nodename + 8, NULL, 10); + if (minor_version < *glibc_minor_base) + *glibc_minor_base = minor_version; + } } /* Skip if it isn't linked against glibc. */ - if (!is_glibc) + if (minor_version < 0) + return NULL; + } + + /* Skip if 2.GLIBC_MINOR_BASE includes VERSION_DEP. */ + if (startswith (version_dep, "GLIBC_2.")) + { + minor_version = strtol (version_dep + 8, NULL, 10); + if (minor_version <= *glibc_minor_base) return NULL; } @@ -2333,10 +2345,12 @@ _bfd_elf_link_add_glibc_version_dependency const char *version_dep[]) { Elf_Internal_Verneed *t = NULL; + int glibc_minor_base = INT_MAX; do { - t = elf_link_add_glibc_verneed (rinfo, t, *version_dep); + t = elf_link_add_glibc_verneed (rinfo, t, *version_dep, + &glibc_minor_base); /* Return if there is no glibc version reference. */ if (t == NULL) return; @@ -3639,6 +3653,7 @@ elf_link_is_defined_archive_symbol (bfd * abfd, carsym * symdef) object file is an IR object, give linker LTO plugin a chance to get the correct symbol table. */ if (abfd->plugin_format == bfd_plugin_yes + || abfd->plugin_format == bfd_plugin_yes_unused #if BFD_SUPPORTS_PLUGINS || (abfd->plugin_format == bfd_plugin_unknown && bfd_link_plugin_object_p (abfd)) @@ -5680,7 +5695,8 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) && !bfd_link_relocatable (info) && (abfd->flags & BFD_PLUGIN) == 0 && !just_syms - && extsymcount) + && extsymcount != 0 + && is_elf_hash_table (&htab->root)) { int r_sym_shift; @@ -5703,9 +5719,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) if ((s->flags & SEC_RELOC) == 0 || s->reloc_count == 0 || (s->flags & SEC_EXCLUDE) != 0 - || ((info->strip == strip_all - || info->strip == strip_debugger) - && (s->flags & SEC_DEBUGGING) != 0)) + || (s->flags & SEC_DEBUGGING) != 0) continue; internal_relocs = _bfd_elf_link_info_read_relocs |