diff options
Diffstat (limited to 'bfd/elf64-ppc.c')
| -rw-r--r-- | bfd/elf64-ppc.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 501d4b7..3a807eb 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -89,6 +89,7 @@ static bfd_vma opd_entry_value #define elf_backend_check_directives ppc64_elf_check_directives #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup #define elf_backend_check_relocs ppc64_elf_check_relocs +#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol @@ -4939,6 +4940,54 @@ opd_entry_value (asection *opd_sec, return val; } +/* Mark sections containing dynamically referenced symbols. When + building shared libraries, we must assume that any visible symbol is + referenced. */ + +static bfd_boolean +ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) +{ + struct bfd_link_info *info = (struct bfd_link_info *) inf; + struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; + + if (eh->elf.root.type == bfd_link_hash_warning) + eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; + + /* Dynamic linking info is on the func descriptor sym. */ + if (eh->oh != NULL + && eh->oh->is_func_descriptor + && (eh->oh->elf.root.type == bfd_link_hash_defined + || eh->oh->elf.root.type == bfd_link_hash_defweak)) + eh = eh->oh; + + if ((eh->elf.root.type == bfd_link_hash_defined + || eh->elf.root.type == bfd_link_hash_defweak) + && (eh->elf.ref_dynamic + || (!info->executable + && eh->elf.def_regular + && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL + && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) + { + asection *code_sec; + + eh->elf.root.u.def.section->flags |= SEC_KEEP; + + /* Function descriptor syms cause the associated + function code sym section to be marked. */ + if (eh->is_func_descriptor + && (eh->oh->elf.root.type == bfd_link_hash_defined + || eh->oh->elf.root.type == bfd_link_hash_defweak)) + eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; + else if (get_opd_info (eh->elf.root.u.def.section) != NULL + && opd_entry_value (eh->elf.root.u.def.section, + eh->elf.root.u.def.value, + &code_sec, NULL) != (bfd_vma) -1) + code_sec->flags |= SEC_KEEP; + } + + return TRUE; +} + /* Return the section that should be marked against GC for a given relocation. */ |