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# This shell script emits a C file. -*- C -*-
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# Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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# Free Software Foundation, Inc.
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#
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# This file is part of the GNU Binutils.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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# This file is sourced from elf32.em, and defines extra powerpc64-elf
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# specific routines.
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#
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fragment <
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#include "ldctor.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf64-ppc.h"
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/* Fake input file for stubs. */
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static lang_input_statement_type *stub_file;
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static int stub_added = 0;
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/* Whether we need to call ppc_layout_sections_again. */
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static int need_laying_out = 0;
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/* Maximum size of a group of input sections that can be handled by
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one stub section. A value of +/-1 indicates the bfd back-end
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should use a suitable default size. */
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static bfd_signed_vma group_size = 1;
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/* Whether to add ".foo" entries for each "foo" in a version script. */
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static int dotsyms = 1;
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/* Whether to run tls optimization. */
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static int no_tls_opt = 0;
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static int no_tls_get_addr_opt = 0;
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/* Whether to run opd optimization. */
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static int no_opd_opt = 0;
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/* Whether to run toc optimization. */
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static int no_toc_opt = 0;
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/* Whether to allow multiple toc sections. */
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static int no_multi_toc = 0;
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/* Whether to sort input toc and got sections. */
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static int no_toc_sort = 0;
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/* Set if PLT call stubs should load r11. */
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static int plt_static_chain = 0;
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/* Whether to emit symbols for stubs. */
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static int emit_stub_syms = -1;
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static asection *toc_section = 0;
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/* Whether to canonicalize .opd so that there are no overlapping
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.opd entries. */
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static int non_overlapping_opd = 0;
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/* This is called before the input files are opened. We create a new
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fake input file to hold the stub sections. */
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static void
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ppc_create_output_section_statements (void)
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{
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if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
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&& elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA))
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return;
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link_info.wrap_char = '.';
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stub_file = lang_add_input_file ("linker stubs",
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lang_input_file_is_fake_enum,
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NULL);
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stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd);
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if (stub_file->the_bfd == NULL
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|| !bfd_set_arch_mach (stub_file->the_bfd,
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bfd_get_arch (link_info.output_bfd),
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bfd_get_mach (link_info.output_bfd)))
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{
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einfo ("%F%P: can not create BFD: %E\n");
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return;
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}
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stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
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ldlang_add_file (stub_file);
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ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info);
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}
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/* Move the input section statement at *U which happens to be on LIST
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to be just before *TO. */
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static void
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move_input_section (lang_statement_list_type *list,
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lang_statement_union_type **u,
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lang_statement_union_type **to)
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{
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lang_statement_union_type *s = *u;
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asection *i = s->input_section.section;
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asection *p, *n;
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/* Snip the input section from the statement list. If it was the
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last statement, fix the list tail pointer. */
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*u = s->header.next;
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if (*u == NULL)
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list->tail = u;
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/* Add it back in the new position. */
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s->header.next = *to;
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*to = s;
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if (list->tail == to)
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list->tail = &s->header.next;
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/* Trim I off the bfd map_head/map_tail doubly linked lists. */
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n = i->map_head.s;
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p = i->map_tail.s;
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(p != NULL ? p : i->output_section)->map_head.s = n;
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(n != NULL ? n : i->output_section)->map_tail.s = p;
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/* Add I back on in its new position. */
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if (s->header.next->header.type == lang_input_section_enum)
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{
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n = s->header.next->input_section.section;
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p = n->map_tail.s;
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}
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else
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{
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/* If the next statement is not an input section statement then
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TO must point at the previous input section statement
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header.next field. */
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lang_input_section_type *prev = (lang_input_section_type *)
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((char *) to - offsetof (lang_statement_union_type, header.next));
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ASSERT (prev->header.type == lang_input_section_enum);
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p = prev->section;
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n = p->map_head.s;
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}
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i->map_head.s = n;
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i->map_tail.s = p;
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(p != NULL ? p : i->output_section)->map_head.s = i;
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(n != NULL ? n : i->output_section)->map_tail.s = i;
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}
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/* Sort input section statements in the linker script tree rooted at
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LIST so that those whose owning bfd happens to have a section
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called .init or .fini are placed first. Place any TOC sections
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referenced by small TOC relocs next, with TOC sections referenced
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only by bigtoc relocs last. */
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static void
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sort_toc_sections (lang_statement_list_type *list,
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lang_statement_union_type **ini,
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lang_statement_union_type **small)
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{
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lang_statement_union_type *s, **u;
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asection *i;
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u = &list->head;
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while ((s = *u) != NULL)
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{
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switch (s->header.type)
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{
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case lang_wild_statement_enum:
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sort_toc_sections (&s->wild_statement.children, ini, small);
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break;
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case lang_group_statement_enum:
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sort_toc_sections (&s->group_statement.children, ini, small);
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break;
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case lang_input_section_enum:
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i = s->input_section.section;
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/* Leave the stub_file .got where it is. We put the .got
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header there. */
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if (i->owner == stub_file->the_bfd)
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break;
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if (bfd_get_section_by_name (i->owner, ".init") != NULL
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|| bfd_get_section_by_name (i->owner, ".fini") != NULL)
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{
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if (ini != NULL && *ini != s)
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{
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move_input_section (list, u, ini);
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if (small == ini)
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small = &s->header.next;
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ini = &s->header.next;
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continue;
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}
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if (small == ini)
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small = &s->header.next;
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ini = &s->header.next;
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break;
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}
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else if (ini == NULL)
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ini = u;
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if (ppc64_elf_has_small_toc_reloc (i))
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{
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if (small != NULL && *small != s)
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{
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move_input_section (list, u, small);
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small = &s->header.next;
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continue;
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}
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small = &s->header.next;
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}
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else if (small == NULL)
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small = u;
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break;
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default:
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break;
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}
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u = &s->header.next;
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}
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}
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static void
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prelim_size_sections (void)
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{
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if (expld.phase != lang_mark_phase_enum)
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{
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expld.phase = lang_mark_phase_enum;
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expld.dataseg.phase = exp_dataseg_none;
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one_lang_size_sections_pass (NULL, FALSE);
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/* We must not cache anything from the preliminary sizing. */
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| 241 |
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lang_reset_memory_regions ();
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| 242 |
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}
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| 243 |
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}
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| 244 |
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| 245 |
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static void
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| 246 |
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ppc_before_allocation (void)
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| 247 |
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{
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| 248 |
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if (stub_file != NULL)
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| 249 |
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{
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| 250 |
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if (!no_opd_opt
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&& !ppc64_elf_edit_opd (&link_info, non_overlapping_opd))
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| 252 |
163 |
khays |
einfo ("%X%P: can not edit %s: %E\n", "opd");
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| 253 |
145 |
khays |
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| 254 |
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if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc)
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| 255 |
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&& !no_tls_opt)
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| 256 |
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{
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| 257 |
|
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/* Size the sections. This is premature, but we want to know the
|
| 258 |
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TLS segment layout so that certain optimizations can be done. */
|
| 259 |
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prelim_size_sections ();
|
| 260 |
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|
| 261 |
|
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if (!ppc64_elf_tls_optimize (&link_info))
|
| 262 |
|
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einfo ("%X%P: TLS problem %E\n");
|
| 263 |
|
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}
|
| 264 |
|
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|
| 265 |
|
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if (!no_toc_opt
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| 266 |
|
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&& !link_info.relocatable)
|
| 267 |
|
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{
|
| 268 |
|
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prelim_size_sections ();
|
| 269 |
|
|
|
| 270 |
|
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if (!ppc64_elf_edit_toc (&link_info))
|
| 271 |
163 |
khays |
einfo ("%X%P: can not edit %s: %E\n", "toc");
|
| 272 |
145 |
khays |
}
|
| 273 |
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|
|
| 274 |
|
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if (!no_toc_sort)
|
| 275 |
|
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{
|
| 276 |
|
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lang_output_section_statement_type *toc_os;
|
| 277 |
|
|
|
| 278 |
|
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toc_os = lang_output_section_find (".got");
|
| 279 |
|
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if (toc_os != NULL)
|
| 280 |
|
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sort_toc_sections (&toc_os->children, NULL, NULL);
|
| 281 |
|
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}
|
| 282 |
|
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}
|
| 283 |
|
|
|
| 284 |
|
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gld${EMULATION_NAME}_before_allocation ();
|
| 285 |
|
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}
|
| 286 |
|
|
|
| 287 |
|
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struct hook_stub_info
|
| 288 |
|
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{
|
| 289 |
|
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lang_statement_list_type add;
|
| 290 |
|
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asection *input_section;
|
| 291 |
|
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};
|
| 292 |
|
|
|
| 293 |
|
|
/* Traverse the linker tree to find the spot where the stub goes. */
|
| 294 |
|
|
|
| 295 |
|
|
static bfd_boolean
|
| 296 |
|
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hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
|
| 297 |
|
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{
|
| 298 |
|
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lang_statement_union_type *l;
|
| 299 |
|
|
bfd_boolean ret;
|
| 300 |
|
|
|
| 301 |
|
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for (; (l = *lp) != NULL; lp = &l->header.next)
|
| 302 |
|
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{
|
| 303 |
|
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switch (l->header.type)
|
| 304 |
|
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{
|
| 305 |
|
|
case lang_constructors_statement_enum:
|
| 306 |
|
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ret = hook_in_stub (info, &constructor_list.head);
|
| 307 |
|
|
if (ret)
|
| 308 |
|
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return ret;
|
| 309 |
|
|
break;
|
| 310 |
|
|
|
| 311 |
|
|
case lang_output_section_statement_enum:
|
| 312 |
|
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ret = hook_in_stub (info,
|
| 313 |
|
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&l->output_section_statement.children.head);
|
| 314 |
|
|
if (ret)
|
| 315 |
|
|
return ret;
|
| 316 |
|
|
break;
|
| 317 |
|
|
|
| 318 |
|
|
case lang_wild_statement_enum:
|
| 319 |
|
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ret = hook_in_stub (info, &l->wild_statement.children.head);
|
| 320 |
|
|
if (ret)
|
| 321 |
|
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return ret;
|
| 322 |
|
|
break;
|
| 323 |
|
|
|
| 324 |
|
|
case lang_group_statement_enum:
|
| 325 |
|
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ret = hook_in_stub (info, &l->group_statement.children.head);
|
| 326 |
|
|
if (ret)
|
| 327 |
|
|
return ret;
|
| 328 |
|
|
break;
|
| 329 |
|
|
|
| 330 |
|
|
case lang_input_section_enum:
|
| 331 |
|
|
if (l->input_section.section == info->input_section)
|
| 332 |
|
|
{
|
| 333 |
|
|
/* We've found our section. Insert the stub immediately
|
| 334 |
|
|
before its associated input section. */
|
| 335 |
|
|
*lp = info->add.head;
|
| 336 |
|
|
*(info->add.tail) = l;
|
| 337 |
|
|
return TRUE;
|
| 338 |
|
|
}
|
| 339 |
|
|
break;
|
| 340 |
|
|
|
| 341 |
|
|
case lang_data_statement_enum:
|
| 342 |
|
|
case lang_reloc_statement_enum:
|
| 343 |
|
|
case lang_object_symbols_statement_enum:
|
| 344 |
|
|
case lang_output_statement_enum:
|
| 345 |
|
|
case lang_target_statement_enum:
|
| 346 |
|
|
case lang_input_statement_enum:
|
| 347 |
|
|
case lang_assignment_statement_enum:
|
| 348 |
|
|
case lang_padding_statement_enum:
|
| 349 |
|
|
case lang_address_statement_enum:
|
| 350 |
|
|
case lang_fill_statement_enum:
|
| 351 |
|
|
break;
|
| 352 |
|
|
|
| 353 |
|
|
default:
|
| 354 |
|
|
FAIL ();
|
| 355 |
|
|
break;
|
| 356 |
|
|
}
|
| 357 |
|
|
}
|
| 358 |
|
|
return FALSE;
|
| 359 |
|
|
}
|
| 360 |
|
|
|
| 361 |
|
|
|
| 362 |
|
|
/* Call-back for ppc64_elf_size_stubs. */
|
| 363 |
|
|
|
| 364 |
|
|
/* Create a new stub section, and arrange for it to be linked
|
| 365 |
|
|
immediately before INPUT_SECTION. */
|
| 366 |
|
|
|
| 367 |
|
|
static asection *
|
| 368 |
|
|
ppc_add_stub_section (const char *stub_sec_name, asection *input_section)
|
| 369 |
|
|
{
|
| 370 |
|
|
asection *stub_sec;
|
| 371 |
|
|
flagword flags;
|
| 372 |
|
|
asection *output_section;
|
| 373 |
|
|
const char *secname;
|
| 374 |
|
|
lang_output_section_statement_type *os;
|
| 375 |
|
|
struct hook_stub_info info;
|
| 376 |
|
|
|
| 377 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
|
| 378 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP);
|
| 379 |
|
|
stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
|
| 380 |
|
|
stub_sec_name, flags);
|
| 381 |
163 |
khays |
if (stub_sec == NULL
|
| 382 |
|
|
|| !bfd_set_section_alignment (stub_file->the_bfd, stub_sec, 5))
|
| 383 |
145 |
khays |
goto err_ret;
|
| 384 |
|
|
|
| 385 |
|
|
output_section = input_section->output_section;
|
| 386 |
|
|
secname = bfd_get_section_name (output_section->owner, output_section);
|
| 387 |
|
|
os = lang_output_section_find (secname);
|
| 388 |
|
|
|
| 389 |
|
|
info.input_section = input_section;
|
| 390 |
|
|
lang_list_init (&info.add);
|
| 391 |
|
|
lang_add_section (&info.add, stub_sec, os);
|
| 392 |
|
|
|
| 393 |
|
|
if (info.add.head == NULL)
|
| 394 |
|
|
goto err_ret;
|
| 395 |
|
|
|
| 396 |
|
|
stub_added = 1;
|
| 397 |
|
|
if (hook_in_stub (&info, &os->children.head))
|
| 398 |
|
|
return stub_sec;
|
| 399 |
|
|
|
| 400 |
|
|
err_ret:
|
| 401 |
|
|
einfo ("%X%P: can not make stub section: %E\n");
|
| 402 |
|
|
return NULL;
|
| 403 |
|
|
}
|
| 404 |
|
|
|
| 405 |
|
|
|
| 406 |
|
|
/* Another call-back for ppc64_elf_size_stubs. */
|
| 407 |
|
|
|
| 408 |
|
|
static void
|
| 409 |
|
|
ppc_layout_sections_again (void)
|
| 410 |
|
|
{
|
| 411 |
|
|
/* If we have changed sizes of the stub sections, then we need
|
| 412 |
|
|
to recalculate all the section offsets. This may mean we need to
|
| 413 |
|
|
add even more stubs. */
|
| 414 |
|
|
gld${EMULATION_NAME}_map_segments (TRUE);
|
| 415 |
|
|
|
| 416 |
|
|
if (!link_info.relocatable)
|
| 417 |
|
|
_bfd_set_gp_value (link_info.output_bfd,
|
| 418 |
|
|
ppc64_elf_toc (link_info.output_bfd));
|
| 419 |
|
|
|
| 420 |
|
|
need_laying_out = -1;
|
| 421 |
|
|
}
|
| 422 |
|
|
|
| 423 |
|
|
|
| 424 |
|
|
static void
|
| 425 |
|
|
build_toc_list (lang_statement_union_type *statement)
|
| 426 |
|
|
{
|
| 427 |
|
|
if (statement->header.type == lang_input_section_enum)
|
| 428 |
|
|
{
|
| 429 |
|
|
asection *i = statement->input_section.section;
|
| 430 |
|
|
|
| 431 |
|
|
if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
|
| 432 |
|
|
&& (i->flags & SEC_EXCLUDE) == 0
|
| 433 |
|
|
&& i->output_section == toc_section)
|
| 434 |
|
|
{
|
| 435 |
|
|
if (!ppc64_elf_next_toc_section (&link_info, i))
|
| 436 |
|
|
einfo ("%X%P: linker script separates .got and .toc\n");
|
| 437 |
|
|
}
|
| 438 |
|
|
}
|
| 439 |
|
|
}
|
| 440 |
|
|
|
| 441 |
|
|
|
| 442 |
|
|
static void
|
| 443 |
|
|
build_section_lists (lang_statement_union_type *statement)
|
| 444 |
|
|
{
|
| 445 |
|
|
if (statement->header.type == lang_input_section_enum)
|
| 446 |
|
|
{
|
| 447 |
|
|
asection *i = statement->input_section.section;
|
| 448 |
|
|
|
| 449 |
|
|
if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
|
| 450 |
|
|
&& (i->flags & SEC_EXCLUDE) == 0
|
| 451 |
|
|
&& i->output_section != NULL
|
| 452 |
|
|
&& i->output_section->owner == link_info.output_bfd)
|
| 453 |
|
|
{
|
| 454 |
|
|
if (!ppc64_elf_next_input_section (&link_info, i))
|
| 455 |
|
|
einfo ("%X%P: can not size stub section: %E\n");
|
| 456 |
|
|
}
|
| 457 |
|
|
}
|
| 458 |
|
|
}
|
| 459 |
|
|
|
| 460 |
|
|
|
| 461 |
|
|
/* Call the back-end function to set TOC base after we have placed all
|
| 462 |
|
|
the sections. */
|
| 463 |
|
|
static void
|
| 464 |
|
|
gld${EMULATION_NAME}_after_allocation (void)
|
| 465 |
|
|
{
|
| 466 |
|
|
/* bfd_elf_discard_info just plays with data and debugging sections,
|
| 467 |
|
|
ie. doesn't affect code size, so we can delay resizing the
|
| 468 |
|
|
sections. It's likely we'll resize everything in the process of
|
| 469 |
|
|
adding stubs. */
|
| 470 |
|
|
if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
|
| 471 |
|
|
need_laying_out = 1;
|
| 472 |
|
|
|
| 473 |
|
|
/* If generating a relocatable output file, then we don't have any
|
| 474 |
|
|
stubs. */
|
| 475 |
|
|
if (stub_file != NULL && !link_info.relocatable)
|
| 476 |
|
|
{
|
| 477 |
|
|
int ret = ppc64_elf_setup_section_lists (&link_info,
|
| 478 |
|
|
&ppc_add_stub_section,
|
| 479 |
|
|
&ppc_layout_sections_again);
|
| 480 |
|
|
if (ret < 0)
|
| 481 |
|
|
einfo ("%X%P: can not size stub section: %E\n");
|
| 482 |
|
|
else if (ret > 0)
|
| 483 |
|
|
{
|
| 484 |
|
|
ppc64_elf_start_multitoc_partition (&link_info);
|
| 485 |
|
|
|
| 486 |
|
|
if (!no_multi_toc)
|
| 487 |
|
|
{
|
| 488 |
|
|
toc_section = bfd_get_section_by_name (link_info.output_bfd,
|
| 489 |
|
|
".got");
|
| 490 |
|
|
if (toc_section != NULL)
|
| 491 |
|
|
lang_for_each_statement (build_toc_list);
|
| 492 |
|
|
}
|
| 493 |
|
|
|
| 494 |
|
|
if (ppc64_elf_layout_multitoc (&link_info)
|
| 495 |
|
|
&& !no_multi_toc
|
| 496 |
|
|
&& toc_section != NULL)
|
| 497 |
|
|
lang_for_each_statement (build_toc_list);
|
| 498 |
|
|
|
| 499 |
|
|
ppc64_elf_finish_multitoc_partition (&link_info);
|
| 500 |
|
|
|
| 501 |
|
|
lang_for_each_statement (build_section_lists);
|
| 502 |
|
|
|
| 503 |
|
|
if (!ppc64_elf_check_init_fini (&link_info))
|
| 504 |
|
|
einfo ("%P: .init/.fini fragments use differing TOC pointers\n");
|
| 505 |
|
|
|
| 506 |
|
|
/* Call into the BFD backend to do the real work. */
|
| 507 |
157 |
khays |
if (!ppc64_elf_size_stubs (&link_info, group_size, plt_static_chain))
|
| 508 |
145 |
khays |
einfo ("%X%P: can not size stub section: %E\n");
|
| 509 |
|
|
}
|
| 510 |
|
|
}
|
| 511 |
|
|
|
| 512 |
|
|
if (need_laying_out != -1)
|
| 513 |
|
|
{
|
| 514 |
|
|
gld${EMULATION_NAME}_map_segments (need_laying_out);
|
| 515 |
|
|
|
| 516 |
|
|
if (!link_info.relocatable)
|
| 517 |
|
|
_bfd_set_gp_value (link_info.output_bfd,
|
| 518 |
|
|
ppc64_elf_toc (link_info.output_bfd));
|
| 519 |
|
|
}
|
| 520 |
|
|
}
|
| 521 |
|
|
|
| 522 |
|
|
|
| 523 |
|
|
/* Final emulation specific call. */
|
| 524 |
|
|
|
| 525 |
|
|
static void
|
| 526 |
|
|
gld${EMULATION_NAME}_finish (void)
|
| 527 |
|
|
{
|
| 528 |
|
|
/* e_entry on PowerPC64 points to the function descriptor for
|
| 529 |
|
|
_start. If _start is missing, default to the first function
|
| 530 |
|
|
descriptor in the .opd section. */
|
| 531 |
|
|
entry_section = ".opd";
|
| 532 |
|
|
|
| 533 |
|
|
if (stub_added)
|
| 534 |
|
|
{
|
| 535 |
|
|
char *msg = NULL;
|
| 536 |
|
|
char *line, *endline;
|
| 537 |
|
|
|
| 538 |
|
|
if (emit_stub_syms < 0)
|
| 539 |
|
|
emit_stub_syms = 1;
|
| 540 |
|
|
if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info,
|
| 541 |
|
|
config.stats ? &msg : NULL))
|
| 542 |
|
|
einfo ("%X%P: can not build stubs: %E\n");
|
| 543 |
|
|
|
| 544 |
|
|
fflush (stdout);
|
| 545 |
|
|
for (line = msg; line != NULL; line = endline)
|
| 546 |
|
|
{
|
| 547 |
|
|
endline = strchr (line, '\n');
|
| 548 |
|
|
if (endline != NULL)
|
| 549 |
|
|
*endline++ = '\0';
|
| 550 |
|
|
fprintf (stderr, "%s: %s\n", program_name, line);
|
| 551 |
|
|
}
|
| 552 |
|
|
fflush (stderr);
|
| 553 |
|
|
if (msg != NULL)
|
| 554 |
|
|
free (msg);
|
| 555 |
|
|
}
|
| 556 |
|
|
|
| 557 |
|
|
ppc64_elf_restore_symbols (&link_info);
|
| 558 |
|
|
finish_default ();
|
| 559 |
|
|
}
|
| 560 |
|
|
|
| 561 |
|
|
|
| 562 |
|
|
/* Add a pattern matching ".foo" for every "foo" in a version script.
|
| 563 |
|
|
|
| 564 |
|
|
The reason for doing this is that many shared library version
|
| 565 |
|
|
scripts export a selected set of functions or data symbols, forcing
|
| 566 |
|
|
others local. eg.
|
| 567 |
|
|
|
| 568 |
|
|
. VERS_1 {
|
| 569 |
|
|
. global:
|
| 570 |
|
|
. this; that; some; thing;
|
| 571 |
|
|
. local:
|
| 572 |
|
|
. *;
|
| 573 |
|
|
. };
|
| 574 |
|
|
|
| 575 |
|
|
To make the above work for PowerPC64, we need to export ".this",
|
| 576 |
|
|
".that" and so on, otherwise only the function descriptor syms are
|
| 577 |
|
|
exported. Lack of an exported function code sym may cause a
|
| 578 |
|
|
definition to be pulled in from a static library. */
|
| 579 |
|
|
|
| 580 |
|
|
static struct bfd_elf_version_expr *
|
| 581 |
|
|
gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry)
|
| 582 |
|
|
{
|
| 583 |
|
|
struct bfd_elf_version_expr *dot_entry;
|
| 584 |
|
|
unsigned int len;
|
| 585 |
|
|
char *dot_pat;
|
| 586 |
|
|
|
| 587 |
|
|
if (!dotsyms
|
| 588 |
|
|
|| entry->pattern[0] == '.'
|
| 589 |
|
|
|| (!entry->literal && entry->pattern[0] == '*'))
|
| 590 |
|
|
return entry;
|
| 591 |
|
|
|
| 592 |
|
|
dot_entry = xmalloc (sizeof *dot_entry);
|
| 593 |
|
|
*dot_entry = *entry;
|
| 594 |
|
|
dot_entry->next = entry;
|
| 595 |
|
|
len = strlen (entry->pattern) + 2;
|
| 596 |
|
|
dot_pat = xmalloc (len);
|
| 597 |
|
|
dot_pat[0] = '.';
|
| 598 |
|
|
memcpy (dot_pat + 1, entry->pattern, len - 1);
|
| 599 |
|
|
dot_entry->pattern = dot_pat;
|
| 600 |
|
|
dot_entry->script = 1;
|
| 601 |
|
|
return dot_entry;
|
| 602 |
|
|
}
|
| 603 |
|
|
|
| 604 |
|
|
|
| 605 |
|
|
/* Avoid processing the fake stub_file in vercheck, stat_needed and
|
| 606 |
|
|
check_needed routines. */
|
| 607 |
|
|
|
| 608 |
|
|
static void (*real_func) (lang_input_statement_type *);
|
| 609 |
|
|
|
| 610 |
|
|
static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l)
|
| 611 |
|
|
{
|
| 612 |
|
|
if (l != stub_file)
|
| 613 |
|
|
(*real_func) (l);
|
| 614 |
|
|
}
|
| 615 |
|
|
|
| 616 |
|
|
static void
|
| 617 |
|
|
ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
|
| 618 |
|
|
{
|
| 619 |
|
|
real_func = func;
|
| 620 |
|
|
lang_for_each_input_file (&ppc_for_each_input_file_wrapper);
|
| 621 |
|
|
}
|
| 622 |
|
|
|
| 623 |
|
|
#define lang_for_each_input_file ppc_lang_for_each_input_file
|
| 624 |
|
|
|
| 625 |
|
|
EOF
|
| 626 |
|
|
|
| 627 |
|
|
if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
|
| 628 |
|
|
fragment <
|
| 629 |
|
|
/* Special handling for embedded SPU executables. */
|
| 630 |
|
|
extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
|
| 631 |
|
|
static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
|
| 632 |
|
|
|
| 633 |
|
|
static bfd_boolean
|
| 634 |
|
|
ppc64_recognized_file (lang_input_statement_type *entry)
|
| 635 |
|
|
{
|
| 636 |
|
|
if (embedded_spu_file (entry, "-m64"))
|
| 637 |
|
|
return TRUE;
|
| 638 |
|
|
|
| 639 |
|
|
return gld${EMULATION_NAME}_load_symbols (entry);
|
| 640 |
|
|
}
|
| 641 |
|
|
EOF
|
| 642 |
|
|
LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file
|
| 643 |
|
|
fi
|
| 644 |
|
|
|
| 645 |
|
|
# Define some shell vars to insert bits of code into the standard elf
|
| 646 |
|
|
# parse_args and list_options functions.
|
| 647 |
|
|
#
|
| 648 |
157 |
khays |
PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
|
| 649 |
|
|
#define OPTION_STUBGROUP_SIZE 321
|
| 650 |
|
|
#define OPTION_PLT_STATIC_CHAIN (OPTION_STUBGROUP_SIZE + 1)
|
| 651 |
|
|
#define OPTION_NO_PLT_STATIC_CHAIN (OPTION_PLT_STATIC_CHAIN + 1)
|
| 652 |
|
|
#define OPTION_STUBSYMS (OPTION_NO_PLT_STATIC_CHAIN + 1)
|
| 653 |
145 |
khays |
#define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1)
|
| 654 |
|
|
#define OPTION_DOTSYMS (OPTION_NO_STUBSYMS + 1)
|
| 655 |
|
|
#define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1)
|
| 656 |
|
|
#define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1)
|
| 657 |
|
|
#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
|
| 658 |
|
|
#define OPTION_NO_OPD_OPT (OPTION_NO_TLS_GET_ADDR_OPT + 1)
|
| 659 |
|
|
#define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1)
|
| 660 |
|
|
#define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_OPT + 1)
|
| 661 |
|
|
#define OPTION_NO_TOC_SORT (OPTION_NO_MULTI_TOC + 1)
|
| 662 |
|
|
#define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_TOC_SORT + 1)
|
| 663 |
|
|
'
|
| 664 |
|
|
|
| 665 |
157 |
khays |
PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
|
| 666 |
145 |
khays |
{ "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
|
| 667 |
157 |
khays |
{ "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN },
|
| 668 |
|
|
{ "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN },
|
| 669 |
145 |
khays |
{ "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
|
| 670 |
|
|
{ "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
|
| 671 |
|
|
{ "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
|
| 672 |
|
|
{ "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
|
| 673 |
|
|
{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
|
| 674 |
|
|
{ "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },
|
| 675 |
|
|
{ "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
|
| 676 |
|
|
{ "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
|
| 677 |
|
|
{ "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC },
|
| 678 |
|
|
{ "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT },
|
| 679 |
|
|
{ "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD },
|
| 680 |
|
|
'
|
| 681 |
|
|
|
| 682 |
157 |
khays |
PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
|
| 683 |
145 |
khays |
fprintf (file, _("\
|
| 684 |
|
|
--stub-group-size=N Maximum size of a group of input sections that\n\
|
| 685 |
|
|
can be handled by one stub section. A negative\n\
|
| 686 |
|
|
value locates all stubs before their branches\n\
|
| 687 |
|
|
(with a group size of -N), while a positive\n\
|
| 688 |
|
|
value allows two groups of input sections, one\n\
|
| 689 |
|
|
before, and one after each stub section.\n\
|
| 690 |
|
|
Values of +/-1 indicate the linker should\n\
|
| 691 |
|
|
choose suitable defaults.\n"
|
| 692 |
|
|
));
|
| 693 |
|
|
fprintf (file, _("\
|
| 694 |
157 |
khays |
--plt-static-chain PLT call stubs should load r11.\n"
|
| 695 |
|
|
));
|
| 696 |
|
|
fprintf (file, _("\
|
| 697 |
|
|
--no-plt-static-chain PLT call stubs should not load r11. (default)\n"
|
| 698 |
|
|
));
|
| 699 |
|
|
fprintf (file, _("\
|
| 700 |
145 |
khays |
--emit-stub-syms Label linker stubs with a symbol.\n"
|
| 701 |
|
|
));
|
| 702 |
|
|
fprintf (file, _("\
|
| 703 |
|
|
--no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n"
|
| 704 |
|
|
));
|
| 705 |
|
|
fprintf (file, _("\
|
| 706 |
|
|
--dotsyms For every version pattern \"foo\" in a version\n\
|
| 707 |
|
|
script, add \".foo\" so that function code\n\
|
| 708 |
|
|
symbols are treated the same as function\n\
|
| 709 |
|
|
descriptor symbols. Defaults to on.\n"
|
| 710 |
|
|
));
|
| 711 |
|
|
fprintf (file, _("\
|
| 712 |
|
|
--no-dotsyms Don'\''t do anything special in version scripts.\n"
|
| 713 |
|
|
));
|
| 714 |
|
|
fprintf (file, _("\
|
| 715 |
|
|
--no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
|
| 716 |
|
|
));
|
| 717 |
|
|
fprintf (file, _("\
|
| 718 |
|
|
--no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n"
|
| 719 |
|
|
));
|
| 720 |
|
|
fprintf (file, _("\
|
| 721 |
|
|
--no-opd-optimize Don'\''t optimize the OPD section.\n"
|
| 722 |
|
|
));
|
| 723 |
|
|
fprintf (file, _("\
|
| 724 |
|
|
--no-toc-optimize Don'\''t optimize the TOC section.\n"
|
| 725 |
|
|
));
|
| 726 |
|
|
fprintf (file, _("\
|
| 727 |
|
|
--no-multi-toc Disallow automatic multiple toc sections.\n"
|
| 728 |
|
|
));
|
| 729 |
|
|
fprintf (file, _("\
|
| 730 |
|
|
--no-toc-sort Don'\''t sort TOC and GOT sections.\n"
|
| 731 |
|
|
));
|
| 732 |
|
|
fprintf (file, _("\
|
| 733 |
|
|
--non-overlapping-opd Canonicalize .opd, so that there are no\n\
|
| 734 |
|
|
overlapping .opd entries.\n"
|
| 735 |
|
|
));
|
| 736 |
|
|
'
|
| 737 |
|
|
|
| 738 |
157 |
khays |
PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
|
| 739 |
145 |
khays |
case OPTION_STUBGROUP_SIZE:
|
| 740 |
|
|
{
|
| 741 |
|
|
const char *end;
|
| 742 |
|
|
group_size = bfd_scan_vma (optarg, &end, 0);
|
| 743 |
|
|
if (*end)
|
| 744 |
|
|
einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
|
| 745 |
|
|
}
|
| 746 |
|
|
break;
|
| 747 |
|
|
|
| 748 |
157 |
khays |
case OPTION_PLT_STATIC_CHAIN:
|
| 749 |
|
|
plt_static_chain = 1;
|
| 750 |
|
|
break;
|
| 751 |
|
|
|
| 752 |
|
|
case OPTION_NO_PLT_STATIC_CHAIN:
|
| 753 |
|
|
plt_static_chain = 0;
|
| 754 |
|
|
break;
|
| 755 |
|
|
|
| 756 |
145 |
khays |
case OPTION_STUBSYMS:
|
| 757 |
|
|
emit_stub_syms = 1;
|
| 758 |
|
|
break;
|
| 759 |
|
|
|
| 760 |
|
|
case OPTION_NO_STUBSYMS:
|
| 761 |
|
|
emit_stub_syms = 0;
|
| 762 |
|
|
break;
|
| 763 |
|
|
|
| 764 |
|
|
case OPTION_DOTSYMS:
|
| 765 |
|
|
dotsyms = 1;
|
| 766 |
|
|
break;
|
| 767 |
|
|
|
| 768 |
|
|
case OPTION_NO_DOTSYMS:
|
| 769 |
|
|
dotsyms = 0;
|
| 770 |
|
|
break;
|
| 771 |
|
|
|
| 772 |
|
|
case OPTION_NO_TLS_OPT:
|
| 773 |
|
|
no_tls_opt = 1;
|
| 774 |
|
|
break;
|
| 775 |
|
|
|
| 776 |
|
|
case OPTION_NO_TLS_GET_ADDR_OPT:
|
| 777 |
|
|
no_tls_get_addr_opt = 1;
|
| 778 |
|
|
break;
|
| 779 |
|
|
|
| 780 |
|
|
case OPTION_NO_OPD_OPT:
|
| 781 |
|
|
no_opd_opt = 1;
|
| 782 |
|
|
break;
|
| 783 |
|
|
|
| 784 |
|
|
case OPTION_NO_TOC_OPT:
|
| 785 |
|
|
no_toc_opt = 1;
|
| 786 |
|
|
break;
|
| 787 |
|
|
|
| 788 |
|
|
case OPTION_NO_MULTI_TOC:
|
| 789 |
|
|
no_multi_toc = 1;
|
| 790 |
|
|
break;
|
| 791 |
|
|
|
| 792 |
|
|
case OPTION_NO_TOC_SORT:
|
| 793 |
|
|
no_toc_sort = 1;
|
| 794 |
|
|
break;
|
| 795 |
|
|
|
| 796 |
|
|
case OPTION_NON_OVERLAPPING_OPD:
|
| 797 |
|
|
non_overlapping_opd = 1;
|
| 798 |
|
|
break;
|
| 799 |
|
|
'
|
| 800 |
|
|
|
| 801 |
|
|
# Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
|
| 802 |
|
|
#
|
| 803 |
|
|
LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
|
| 804 |
|
|
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
|
| 805 |
|
|
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
|
| 806 |
|
|
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
|
| 807 |
|
|
LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern
|