* ldgram.y (PHDRS): New token.
(ifile_p1): Accept phdrs. (section): Accept phdr_opt at the end of the section definition. (phdr_op): New nonterminal. (phdrs, phdr_list, phdr, phdr_type, opt_hdrs, hdr): Likewise. * ldlex.l: Accept PHDRS. * ldlang.h (struct lang_output_section_phdr_list): Define. (lang_output_section_statement_type): Add phdrs field. (struct lang_phdr): Define. (LANG_PHDR_FILEHDR, LANG_PHDR_PHDRS): Define. (lang_new_phdr): Declare. * ldlang.c (lang_phdr_list): New static variable. (lang_output_section_statement_lookup): Initialize phdrs field. (lang_process): Call lang_record_phdrs. (lang_new_phdr): New function. (lang_section_in_phdr): New function. (lang_record_phdrs): New static function. * ld.texinfo: Document PHDRS.
This commit is contained in:
Ian Lance Taylor
parent
ae0a6bea51
commit
061e65f855
21
ld/ChangeLog
21
ld/ChangeLog
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@ -1,3 +1,24 @@
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Fri Dec 1 16:48:36 1995 Ian Lance Taylor <ian@cygnus.com>
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* ldgram.y (PHDRS): New token.
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(ifile_p1): Accept phdrs.
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(section): Accept phdr_opt at the end of the section definition.
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(phdr_op): New nonterminal.
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(phdrs, phdr_list, phdr, phdr_type, opt_hdrs, hdr): Likewise.
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* ldlex.l: Accept PHDRS.
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* ldlang.h (struct lang_output_section_phdr_list): Define.
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(lang_output_section_statement_type): Add phdrs field.
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(struct lang_phdr): Define.
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(LANG_PHDR_FILEHDR, LANG_PHDR_PHDRS): Define.
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(lang_new_phdr): Declare.
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* ldlang.c (lang_phdr_list): New static variable.
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(lang_output_section_statement_lookup): Initialize phdrs field.
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(lang_process): Call lang_record_phdrs.
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(lang_new_phdr): New function.
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(lang_section_in_phdr): New function.
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(lang_record_phdrs): New static function.
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* ld.texinfo: Document PHDRS.
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Thu Nov 30 13:14:30 1995 Kim Knuttila <krk@cygnus.com>
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* scripttempl/ppcpe.sc: Moved .edata into its own section to
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149
ld/ldlang.c
149
ld/ldlang.c
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@ -59,6 +59,7 @@ static CONST char *current_target;
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static CONST char *output_target;
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static int longest_section_name = 8;
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static lang_statement_list_type statement_list;
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static struct lang_phdr *lang_phdr_list;
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static void print_size PARAMS ((size_t value));
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static void print_alignment PARAMS ((unsigned int value));
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@ -128,12 +129,13 @@ static void lang_place_orphans PARAMS ((void));
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static int topower PARAMS ((int));
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static void lang_set_startof PARAMS ((void));
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static void reset_memory_regions PARAMS ((void));
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static void lang_record_phdrs PARAMS ((void));
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/* EXPORTS */
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lang_output_section_statement_type *abs_output_section;
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lang_statement_list_type *stat_ptr = &statement_list;
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lang_statement_list_type file_chain = { 0 };
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static const char *entry_symbol = 0;
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const char *entry_symbol = NULL;
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boolean entry_from_cmdline;
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boolean lang_has_input_file = false;
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boolean had_output_filename = false;
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@ -526,6 +528,7 @@ lang_output_section_statement_lookup (name)
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lookup->subsection_alignment = -1;
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lookup->section_alignment = -1;
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lookup->load_base = (union etree_union *) NULL;
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lookup->phdrs = NULL;
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lang_statement_append (&lang_output_section_statement,
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(lang_statement_union_type *) lookup,
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@ -2245,7 +2248,8 @@ lang_finish ()
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h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
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if (h != (struct bfd_link_hash_entry *) NULL
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&& (h->type == bfd_link_hash_defined
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|| h->type == bfd_link_hash_defweak))
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|| h->type == bfd_link_hash_defweak)
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&& h->u.def.section->output_section != NULL)
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{
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bfd_vma val;
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@ -2724,6 +2728,10 @@ lang_process ()
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ldemul_before_allocation ();
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/* We must record the program headers before we try to fix the
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section positions, since they will affect SIZEOF_HEADERS. */
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lang_record_phdrs ();
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/* Now run around and relax if we can */
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if (command_line.relax)
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{
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@ -3114,3 +3122,140 @@ lang_leave_group ()
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{
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stat_ptr = &statement_list;
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}
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/* Add a new program header. This is called for each entry in a PHDRS
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command in a linker script. */
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void
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lang_new_phdr (name, type, hdrs, at)
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const char *name;
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etree_type *type;
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unsigned int hdrs;
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etree_type *at;
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{
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struct lang_phdr *n, **pp;
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n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
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n->next = NULL;
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n->name = name;
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n->type = exp_get_value_int (type, 0, "program header type",
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lang_final_phase_enum);
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n->hdrs = hdrs;
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n->at = at;
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for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
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;
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*pp = n;
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}
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/* Record that a section should be placed in a phdr. */
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void
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lang_section_in_phdr (name)
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const char *name;
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{
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struct lang_output_section_phdr_list *n;
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n = ((struct lang_output_section_phdr_list *)
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stat_alloc (sizeof (struct lang_output_section_phdr_list)));
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n->name = name;
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n->used = false;
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n->next = current_section->phdrs;
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current_section->phdrs = n;
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}
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/* Record the program header information in the output BFD. FIXME: We
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should not be calling an ELF specific function here. */
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static void
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lang_record_phdrs ()
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{
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unsigned int alc;
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asection **secs;
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struct lang_output_section_phdr_list *last;
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struct lang_phdr *l;
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lang_statement_union_type *u;
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alc = 10;
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secs = xmalloc (alc * sizeof (asection *));
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last = NULL;
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for (l = lang_phdr_list; l != NULL; l = l->next)
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{
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unsigned int c;
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bfd_vma at;
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c = 0;
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for (u = lang_output_section_statement.head;
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u != NULL;
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u = u->output_section_statement.next)
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{
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lang_output_section_statement_type *os;
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struct lang_output_section_phdr_list *pl;
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os = &u->output_section_statement;
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pl = os->phdrs;
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if (pl != NULL)
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last = pl;
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else
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{
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if (! os->loadable
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|| os->bfd_section == NULL
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|| (os->bfd_section->flags & SEC_ALLOC) == 0)
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continue;
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pl = last;
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}
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if (os->bfd_section == NULL)
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continue;
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for (; pl != NULL; pl = pl->next)
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{
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if (strcmp (pl->name, l->name) == 0)
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{
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if (c >= alc)
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{
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alc *= 2;
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secs = xrealloc (secs, alc * sizeof (asection *));
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}
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secs[c] = os->bfd_section;
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++c;
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pl->used = true;
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}
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}
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}
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if (l->at == NULL)
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at = 0;
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else
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at = exp_get_vma (l->at, 0, "phdr load address",
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lang_final_phase_enum);
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if (! bfd_record_phdr (output_bfd, l->type, false, 0,
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l->at == NULL ? false : true,
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at,
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(l->hdrs & LANG_PHDR_FILEHDR) ? true : false,
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(l->hdrs & LANG_PHDR_PHDRS) ? true : false,
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c, secs))
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einfo ("%F%P: bfd_record_phdr failed: %E\n");
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}
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free (secs);
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/* Make sure all the phdr assignments succeeded. */
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for (u = lang_output_section_statement.head;
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u != NULL;
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u = u->output_section_statement.next)
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{
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struct lang_output_section_phdr_list *pl;
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if (u->output_section_statement.bfd_section == NULL)
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continue;
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for (pl = u->output_section_statement.phdrs;
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pl != NULL;
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pl = pl->next)
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if (! pl->used && strcmp (pl->name, "NONE") != 0)
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einfo ("%X%P: section `%s' assigned to non-existent phdr `%s'\n",
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u->output_section_statement.name, pl->name);
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}
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}
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