diff options
Diffstat (limited to 'bfd/elflink.c')
| -rw-r--r-- | bfd/elflink.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/bfd/elflink.c b/bfd/elflink.c index f9f7e13..ed69181 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -1,6 +1,6 @@ /* ELF linking support for BFD. Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, - 2005, 2006, 2007 Free Software Foundation, Inc. + 2005, 2006, 2007, 2008 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -11463,6 +11463,29 @@ bfd_elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, void *inf) return TRUE; } +/* Keep all sections containing symbols undefined on the command-line, + and the section containing the entry symbol. */ + +void +_bfd_elf_gc_keep (struct bfd_link_info *info) +{ + struct bfd_sym_chain *sym; + + for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) + { + struct elf_link_hash_entry *h; + + h = elf_link_hash_lookup (elf_hash_table (info), sym->name, + FALSE, FALSE, FALSE); + + if (h != NULL + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && !bfd_is_abs_section (h->root.u.def.section)) + h->root.u.def.section->flags |= SEC_KEEP; + } +} + /* Do mark and sweep of unused sections. */ bfd_boolean @@ -11480,6 +11503,8 @@ bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) return TRUE; } + bed->gc_keep (info); + /* Try to parse each bfd's .eh_frame section. Point elf_eh_frame_section at the .eh_frame section if we can mark the FDEs individually. */ _bfd_elf_begin_eh_frame_parsing (info); @@ -11536,7 +11561,7 @@ bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) /* Allow the backend to mark additional target specific sections. */ if (bed->gc_mark_extra_sections) - bed->gc_mark_extra_sections(info, gc_mark_hook); + bed->gc_mark_extra_sections (info, gc_mark_hook); /* ... and mark SEC_EXCLUDE for those that go. */ return elf_gc_sweep (abfd, info); |