From 57316bff0a1aebca7c9f92d125e5366014f0bb1a Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 16 Mar 2005 21:52:48 +0000 Subject: bfd/ 2005-03-16 H.J. Lu * elflink.c (elf_mark_used_section): New. (bfd_elf_gc_sections): Call elf_gc_mark_section for non-relocatable link if we don't do GC. include/ 2005-03-16 H.J. Lu * bfdlink.h (bfd_link_info): Add gc_sections. ld/ 2005-03-16 H.J. Lu * emultempl/elf32.em (gld${EMULATION_NAME}_finish): Remove unused empty output sections for non-relocatable link. * ld.h (args_type): Remove gc_sections. * ldlang.c (lang_mark_used_section): New. (lang_gc_sections): Use link_info.gc_sections instead of command_line.gc_sections. * ldmain.c (main): Likewise. * lexsup.c (parse_args): Likewise. * ldlang.c (lang_process): Call lang_mark_used_section. * ldmain.c (main): Initialize link_info.gc_sections to FALSE. ld/testsuite/ 2005-03-16 H.J. Lu * ld-alpha/tlsbin.rd: Updated for empty section removal. * ld-alpha/tlsbinr.rd: Likewise. * ld-alpha/tlspic.rd: Likewise. * ld-arm/mixed-lib.sym: Likewise. * ld-i386/tlsbin.rd: Likewise. * ld-i386/tlsnopic.rd: Likewise. * ld-i386/tlspic.rd: Likewise. * ld-ia64/tlsbin.rd: Likewise. * ld-ia64/tlspic.rd: Likewise. * ld-powerpc/apuinfo.rd: Likewise. * ld-powerpc/powerpc.exp: Likewise. * ld-powerpc/tlsexe32.r: Likewise. * ld-s390/tlsbin.rd: Likewise. * ld-s390/tlsbin_64.rd: Likewise. * ld-s390/tlspic.rd: Likewise. * ld-s390/tlspic_64.rd: Likewise. * ld-sh/tlsbin-2.d: Likewise. * ld-sh/tlspic-2.d: Likewise. * ld-sparc/tlssunbin32.rd: Likewise. * ld-sparc/tlssunnopic32.rd: Likewise. * ld-sparc/tlssunpic32.rd: Likewise. * ld-x86-64/tlsbin.rd: Likewise. * ld-x86-64/tlspic.rd: Likewise. --- bfd/elflink.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'bfd/elflink.c') diff --git a/bfd/elflink.c b/bfd/elflink.c index 1721f3f..9f1be5f 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -8996,7 +8996,28 @@ elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, return TRUE; } + +/* Mark sections containing global symbols. This is called through + elf_link_hash_traverse. */ +static bfd_boolean +elf_mark_used_section (struct elf_link_hash_entry *h, + void *global ATTRIBUTE_UNUSED) +{ + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + + if ((h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)) + { + asection *s = h->root.u.def.section->output_section; + if (s) + s->flags |= SEC_KEEP; + } + + return TRUE; +} + /* Do mark and sweep of unused sections. */ bfd_boolean @@ -9008,6 +9029,17 @@ bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) (asection *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *h, Elf_Internal_Sym *); + if (!info->gc_sections) + { + /* If we are called when info->gc_sections is 0, we will mark + all sections containing global symbols for non-relocable + link. */ + if (!info->relocatable) + elf_link_hash_traverse (elf_hash_table (info), + elf_mark_used_section, NULL); + return TRUE; + } + if (!get_elf_backend_data (abfd)->can_gc_sections || info->relocatable || info->emitrelocations -- cgit v1.1