* xcofflink.c (xcoff_mark_symbol): New static function, broken out
of xcoff_mark. (xcoff_mark): Call xcoff_mark_symbol. (bfd_xcoff_export_symbol): Call xcoff_mark_symbol. (bfd_xcoff_link_count_reloc): Call xcoff_mark_symbol rather than doing it by hand. (xcoff_build_ldsyms): Build a .loader symbol for an export symbol.
This commit is contained in:
Ian Lance Taylor
parent
e295a90d12
commit
e608052057
@ -1,3 +1,13 @@
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Tue Oct 31 12:34:11 1995 Ian Lance Taylor <ian@cygnus.com>
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* xcofflink.c (xcoff_mark_symbol): New static function, broken out
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of xcoff_mark.
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(xcoff_mark): Call xcoff_mark_symbol.
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(bfd_xcoff_export_symbol): Call xcoff_mark_symbol.
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(bfd_xcoff_link_count_reloc): Call xcoff_mark_symbol rather than
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doing it by hand.
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(xcoff_build_ldsyms): Build a .loader symbol for an export symbol.
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Mon Oct 30 14:53:48 1995 Ian Lance Taylor <ian@cygnus.com>
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* xcofflink.c (struct xcoff_final_link_info): Add new line_filepos
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438
bfd/xcofflink.c
438
bfd/xcofflink.c
@ -1911,6 +1911,207 @@ xcoff_link_add_dynamic_symbols (abfd, info)
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/* Routines that are called after all the input files have been
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handled, but before the sections are laid out in memory. */
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/* Mark a symbol as not being garbage, including the section in which
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it is defined. */
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static INLINE boolean
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xcoff_mark_symbol (info, h)
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struct bfd_link_info *info;
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struct xcoff_link_hash_entry *h;
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{
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if ((h->flags & XCOFF_MARK) != 0)
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return true;
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h->flags |= XCOFF_MARK;
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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{
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asection *hsec;
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hsec = h->root.u.def.section;
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if ((hsec->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, hsec))
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return false;
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}
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}
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if (h->toc_section != NULL
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&& (h->toc_section->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, h->toc_section))
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return false;
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}
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return true;
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}
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/* The mark phase of garbage collection. For a given section, mark
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it, and all the sections which define symbols to which it refers.
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Because this function needs to look at the relocs, we also count
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the number of relocs which need to be copied into the .loader
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section. */
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static boolean
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xcoff_mark (info, sec)
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struct bfd_link_info *info;
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asection *sec;
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{
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if ((sec->flags & SEC_MARK) != 0)
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return true;
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sec->flags |= SEC_MARK;
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if (sec->owner->xvec == info->hash->creator
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&& coff_section_data (sec->owner, sec) != NULL
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&& xcoff_section_data (sec->owner, sec) != NULL)
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{
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register struct xcoff_link_hash_entry **hp, **hpend;
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struct internal_reloc *rel, *relend;
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/* Mark all the symbols in this section. */
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hp = (obj_xcoff_sym_hashes (sec->owner)
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+ xcoff_section_data (sec->owner, sec)->first_symndx);
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hpend = (obj_xcoff_sym_hashes (sec->owner)
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+ xcoff_section_data (sec->owner, sec)->last_symndx);
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for (; hp < hpend; hp++)
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{
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register struct xcoff_link_hash_entry *h;
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h = *hp;
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if (h != NULL
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&& (h->flags & XCOFF_MARK) == 0)
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{
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if (! xcoff_mark_symbol (info, h))
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return false;
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}
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}
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/* Look through the section relocs. */
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if ((sec->flags & SEC_RELOC) != 0
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&& sec->reloc_count > 0)
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{
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rel = xcoff_read_internal_relocs (sec->owner, sec, true,
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(bfd_byte *) NULL, false,
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(struct internal_reloc *) NULL);
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if (rel == NULL)
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return false;
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relend = rel + sec->reloc_count;
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for (; rel < relend; rel++)
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{
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asection *rsec;
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struct xcoff_link_hash_entry *h;
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if ((unsigned int) rel->r_symndx
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> obj_raw_syment_count (sec->owner))
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continue;
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h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx];
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if (h != NULL
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&& (h->flags & XCOFF_MARK) == 0)
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{
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if (! xcoff_mark_symbol (info, h))
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return false;
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}
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rsec = xcoff_data (sec->owner)->csects[rel->r_symndx];
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if (rsec != NULL
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&& (rsec->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, rsec))
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return false;
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}
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/* See if this reloc needs to be copied into the .loader
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section. */
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switch (rel->r_type)
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{
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default:
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if (h == NULL
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|| h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak
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|| h->root.type == bfd_link_hash_common
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|| ((h->flags & XCOFF_CALLED) != 0
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&& (h->flags & XCOFF_DEF_REGULAR) == 0
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&& (h->flags & XCOFF_REF_DYNAMIC) != 0
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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.root.string[0] == '.'))
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break;
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/* Fall through. */
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case R_POS:
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case R_NEG:
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case R_RL:
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case R_RLA:
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++xcoff_hash_table (info)->ldrel_count;
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if (h != NULL)
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h->flags |= XCOFF_LDREL;
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break;
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case R_TOC:
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case R_GL:
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case R_TCL:
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case R_TRL:
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case R_TRLA:
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/* We should never need a .loader reloc for a TOC
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relative reloc. */
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break;
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}
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}
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if (! info->keep_memory
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&& coff_section_data (sec->owner, sec) != NULL
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&& coff_section_data (sec->owner, sec)->relocs != NULL
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&& ! coff_section_data (sec->owner, sec)->keep_relocs)
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{
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free (coff_section_data (sec->owner, sec)->relocs);
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coff_section_data (sec->owner, sec)->relocs = NULL;
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}
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}
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}
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return true;
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}
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/* The sweep phase of garbage collection. Remove all garbage
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sections. */
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static void
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xcoff_sweep (info)
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struct bfd_link_info *info;
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{
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bfd *sub;
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for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
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{
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asection *o;
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for (o = sub->sections; o != NULL; o = o->next)
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{
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if ((o->flags & SEC_MARK) == 0)
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{
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/* Keep all sections from non-XCOFF input files. Keep
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special sections. Keep .debug sections for the
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moment. */
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if (sub->xvec != info->hash->creator
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|| o == xcoff_hash_table (info)->debug_section
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|| o == xcoff_hash_table (info)->loader_section
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|| o == xcoff_hash_table (info)->linkage_section
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|| o == xcoff_hash_table (info)->toc_section
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|| strcmp (o->name, ".debug") == 0)
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o->flags |= SEC_MARK;
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else
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{
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o->_raw_size = 0;
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o->reloc_count = 0;
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o->lineno_count = 0;
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}
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}
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}
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}
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}
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/* Record the number of elements in a set. This is used to output the
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correct csect length. */
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@ -2048,6 +2249,10 @@ bfd_xcoff_export_symbol (output_bfd, info, harg, syscall)
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/* FIXME: I'm not at all sure what syscall is supposed to mean, so
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I'm just going to ignore it until somebody explains it. */
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/* Make sure we don't garbage collect this symbol. */
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if (! xcoff_mark_symbol (info, h))
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return false;
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return true;
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}
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@ -2076,29 +2281,8 @@ bfd_xcoff_link_count_reloc (output_bfd, info, name)
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++xcoff_hash_table (info)->ldrel_count;
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/* Mark the symbol to avoid garbage collection. */
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if ((h->flags & XCOFF_MARK) == 0)
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{
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h->flags |= XCOFF_MARK;
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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{
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asection *hsec;
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hsec = h->root.u.def.section;
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if ((hsec->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, hsec))
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return false;
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}
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}
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if (h->toc_section != NULL
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&& (h->toc_section->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, h->toc_section))
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return false;
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}
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}
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if (! xcoff_mark_symbol (info, h))
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return false;
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return true;
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}
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@ -2479,208 +2663,6 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry,
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return false;
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}
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/* The mark phase of garbage collection. For a given section, mark
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it, and all the sections which define symbols to which it refers.
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Because this function needs to look at the relocs, we also count
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the number of relocs which need to be copied into the .loader
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section. */
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static boolean
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xcoff_mark (info, sec)
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struct bfd_link_info *info;
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asection *sec;
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{
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if ((sec->flags & SEC_MARK) != 0)
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return true;
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sec->flags |= SEC_MARK;
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if (sec->owner->xvec == info->hash->creator
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&& coff_section_data (sec->owner, sec) != NULL
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&& xcoff_section_data (sec->owner, sec) != NULL)
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{
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register struct xcoff_link_hash_entry **hp, **hpend;
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struct internal_reloc *rel, *relend;
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/* Mark all the symbols in this section. */
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hp = (obj_xcoff_sym_hashes (sec->owner)
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+ xcoff_section_data (sec->owner, sec)->first_symndx);
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hpend = (obj_xcoff_sym_hashes (sec->owner)
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+ xcoff_section_data (sec->owner, sec)->last_symndx);
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for (; hp < hpend; hp++)
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{
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register struct xcoff_link_hash_entry *h;
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h = *hp;
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if (h != NULL
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&& (h->flags & XCOFF_MARK) == 0)
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{
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h->flags |= XCOFF_MARK;
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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{
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asection *hsec;
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hsec = h->root.u.def.section;
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if ((hsec->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, hsec))
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return false;
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}
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}
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if (h->toc_section != NULL
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&& (h->toc_section->flags & SEC_MARK) == 0)
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{
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if (! xcoff_mark (info, h->toc_section))
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return false;
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}
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}
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}
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/* Look through the section relocs. */
|
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if ((sec->flags & SEC_RELOC) != 0
|
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&& sec->reloc_count > 0)
|
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{
|
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rel = xcoff_read_internal_relocs (sec->owner, sec, true,
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(bfd_byte *) NULL, false,
|
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(struct internal_reloc *) NULL);
|
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if (rel == NULL)
|
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return false;
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relend = rel + sec->reloc_count;
|
||||
for (; rel < relend; rel++)
|
||||
{
|
||||
asection *rsec;
|
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struct xcoff_link_hash_entry *h;
|
||||
|
||||
if ((unsigned int) rel->r_symndx
|
||||
> obj_raw_syment_count (sec->owner))
|
||||
continue;
|
||||
|
||||
h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx];
|
||||
if (h != NULL
|
||||
&& (h->flags & XCOFF_MARK) == 0)
|
||||
{
|
||||
h->flags |= XCOFF_MARK;
|
||||
if (h->root.type == bfd_link_hash_defined
|
||||
|| h->root.type == bfd_link_hash_defweak)
|
||||
{
|
||||
asection *hsec;
|
||||
|
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hsec = h->root.u.def.section;
|
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if ((hsec->flags & SEC_MARK) == 0)
|
||||
{
|
||||
if (! xcoff_mark (info, hsec))
|
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return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (h->toc_section != NULL
|
||||
&& (h->toc_section->flags & SEC_MARK) == 0)
|
||||
{
|
||||
if (! xcoff_mark (info, h->toc_section))
|
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return false;
|
||||
}
|
||||
}
|
||||
|
||||
rsec = xcoff_data (sec->owner)->csects[rel->r_symndx];
|
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if (rsec != NULL
|
||||
&& (rsec->flags & SEC_MARK) == 0)
|
||||
{
|
||||
if (! xcoff_mark (info, rsec))
|
||||
return false;
|
||||
}
|
||||
|
||||
/* See if this reloc needs to be copied into the .loader
|
||||
section. */
|
||||
switch (rel->r_type)
|
||||
{
|
||||
default:
|
||||
if (h == NULL
|
||||
|| h->root.type == bfd_link_hash_defined
|
||||
|| h->root.type == bfd_link_hash_defweak
|
||||
|| h->root.type == bfd_link_hash_common
|
||||
|| ((h->flags & XCOFF_CALLED) != 0
|
||||
&& (h->flags & XCOFF_DEF_REGULAR) == 0
|
||||
&& (h->flags & XCOFF_REF_DYNAMIC) != 0
|
||||
&& (h->root.type == bfd_link_hash_undefined
|
||||
|| h->root.type == bfd_link_hash_undefweak)
|
||||
&& h->root.root.string[0] == '.'))
|
||||
break;
|
||||
/* Fall through. */
|
||||
case R_POS:
|
||||
case R_NEG:
|
||||
case R_RL:
|
||||
case R_RLA:
|
||||
++xcoff_hash_table (info)->ldrel_count;
|
||||
if (h != NULL)
|
||||
h->flags |= XCOFF_LDREL;
|
||||
break;
|
||||
case R_TOC:
|
||||
case R_GL:
|
||||
case R_TCL:
|
||||
case R_TRL:
|
||||
case R_TRLA:
|
||||
/* We should never need a .loader reloc for a TOC
|
||||
relative reloc. */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (! info->keep_memory
|
||||
&& coff_section_data (sec->owner, sec) != NULL
|
||||
&& coff_section_data (sec->owner, sec)->relocs != NULL
|
||||
&& ! coff_section_data (sec->owner, sec)->keep_relocs)
|
||||
{
|
||||
free (coff_section_data (sec->owner, sec)->relocs);
|
||||
coff_section_data (sec->owner, sec)->relocs = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* The sweep phase of garbage collection. Remove all garbage
|
||||
sections. */
|
||||
|
||||
static void
|
||||
xcoff_sweep (info)
|
||||
struct bfd_link_info *info;
|
||||
{
|
||||
bfd *sub;
|
||||
|
||||
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
|
||||
{
|
||||
asection *o;
|
||||
|
||||
for (o = sub->sections; o != NULL; o = o->next)
|
||||
{
|
||||
if ((o->flags & SEC_MARK) == 0)
|
||||
{
|
||||
/* Keep all sections from non-XCOFF input files. Keep
|
||||
special sections. Keep .debug sections for the
|
||||
moment. */
|
||||
if (sub->xvec != info->hash->creator
|
||||
|| o == xcoff_hash_table (info)->debug_section
|
||||
|| o == xcoff_hash_table (info)->loader_section
|
||||
|| o == xcoff_hash_table (info)->linkage_section
|
||||
|| o == xcoff_hash_table (info)->toc_section
|
||||
|| strcmp (o->name, ".debug") == 0)
|
||||
o->flags |= SEC_MARK;
|
||||
else
|
||||
{
|
||||
o->_raw_size = 0;
|
||||
o->reloc_count = 0;
|
||||
o->lineno_count = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Add a symbol to the .loader symbols, if necessary. */
|
||||
|
||||
static boolean
|
||||
@ -2762,13 +2744,15 @@ xcoff_build_ldsyms (h, p)
|
||||
|
||||
/* We need to add a symbol to the .loader section if it is mentioned
|
||||
in a reloc which we are copying to the .loader section and it was
|
||||
not defined or common, or if it is the entry point. */
|
||||
not defined or common, or if it is the entry point, or if it is
|
||||
being exported. */
|
||||
|
||||
if (((h->flags & XCOFF_LDREL) == 0
|
||||
|| h->root.type == bfd_link_hash_defined
|
||||
|| h->root.type == bfd_link_hash_defweak
|
||||
|| h->root.type == bfd_link_hash_common)
|
||||
&& (h->flags & XCOFF_ENTRY) == 0)
|
||||
&& (h->flags & XCOFF_ENTRY) == 0
|
||||
&& (h->flags & XCOFF_EXPORT) == 0)
|
||||
{
|
||||
h->ldsym = NULL;
|
||||
return true;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user