932 lines
27 KiB
Plaintext
932 lines
27 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# Copyright (C) 2002-2015 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 <<EOF
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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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#include "ldlex.h"
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#include "elf/ppc64.h"
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static asection *ppc_add_stub_section (const char *, asection *);
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static void ppc_layout_sections_again (void);
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static struct ppc64_elf_params params = { NULL,
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&ppc_add_stub_section,
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&ppc_layout_sections_again,
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1, -1, 0,
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${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 0,
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0, -1, -1, 0};
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/* Fake input file for stubs. */
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static lang_input_statement_type *stub_file;
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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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/* 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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/* 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 sort input toc and got sections. */
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static int no_toc_sort = 0;
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/* Input .toc sections will be placed in this output section. */
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static const char *toc_section_name = ".got";
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static asection *toc_section = 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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params.stub_bfd = stub_file->the_bfd;
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if (params.save_restore_funcs < 0)
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params.save_restore_funcs = !bfd_link_relocatable (&link_info);
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if (!ppc64_elf_init_stub_bfd (&link_info, ¶ms))
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einfo ("%F%P: can not init BFD: %E\n");
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}
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/* Called after opening files but before mapping sections. */
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static void
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ppc_after_open (void)
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{
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if (stub_file != NULL && link_info.relro && params.object_in_toc)
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{
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/* We have a .toc section that might be written to at run time.
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Don't put .toc into the .got output section. */
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lang_output_section_statement_type *got;
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got = lang_output_section_find (".got");
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if (got != NULL)
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{
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lang_statement_union_type *s;
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for (s = got->children.head; s != NULL; s = s->header.next)
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if (s->header.type == lang_wild_statement_enum
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&& s->wild_statement.filename == NULL)
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{
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struct wildcard_list **i = &s->wild_statement.section_list;
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while (*i != NULL)
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if (strcmp ((*i)->spec.name, ".toc") == 0)
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*i = (*i)->next;
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else
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i = &(*i)->next;
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}
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/* Instead, .toc input sections will be mapped to the
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read/write .toc output section. If user scripts don't
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provide one then we'll lose toc sorting and multi-toc. */
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toc_section_name = ".toc";
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}
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}
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gld${EMULATION_NAME}_after_open ();
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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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lang_reset_memory_regions ();
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}
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}
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static void
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ppc_before_allocation (void)
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{
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if (stub_file != NULL)
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{
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if (!no_opd_opt
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&& !ppc64_elf_edit_opd (&link_info))
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einfo ("%X%P: can not edit %s: %E\n", "opd");
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if (ppc64_elf_tls_setup (&link_info)
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&& !no_tls_opt)
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{
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/* Size the sections. This is premature, but we want to know the
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TLS segment layout so that certain optimizations can be done. */
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prelim_size_sections ();
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if (!ppc64_elf_tls_optimize (&link_info))
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einfo ("%X%P: TLS problem %E\n");
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}
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if (!no_toc_opt
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&& !bfd_link_relocatable (&link_info))
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{
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prelim_size_sections ();
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if (!ppc64_elf_edit_toc (&link_info))
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einfo ("%X%P: can not edit %s: %E\n", "toc");
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}
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if (!no_toc_sort)
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{
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lang_output_section_statement_type *toc_os;
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toc_os = lang_output_section_find (toc_section_name);
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if (toc_os != NULL)
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sort_toc_sections (&toc_os->children, NULL, NULL);
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}
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}
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gld${EMULATION_NAME}_before_allocation ();
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}
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struct hook_stub_info
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{
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lang_statement_list_type add;
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asection *input_section;
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};
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/* Traverse the linker tree to find the spot where the stub goes. */
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static bfd_boolean
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hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
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{
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lang_statement_union_type *l;
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bfd_boolean ret;
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for (; (l = *lp) != NULL; lp = &l->header.next)
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{
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switch (l->header.type)
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{
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case lang_constructors_statement_enum:
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ret = hook_in_stub (info, &constructor_list.head);
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if (ret)
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return ret;
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break;
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case lang_output_section_statement_enum:
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ret = hook_in_stub (info,
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&l->output_section_statement.children.head);
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if (ret)
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return ret;
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break;
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case lang_wild_statement_enum:
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ret = hook_in_stub (info, &l->wild_statement.children.head);
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if (ret)
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return ret;
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break;
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case lang_group_statement_enum:
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ret = hook_in_stub (info, &l->group_statement.children.head);
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if (ret)
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return ret;
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break;
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case lang_input_section_enum:
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if (l->input_section.section == info->input_section)
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{
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/* We've found our section. Insert the stub immediately
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before its associated input section. */
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*lp = info->add.head;
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*(info->add.tail) = l;
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return TRUE;
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}
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break;
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case lang_data_statement_enum:
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case lang_reloc_statement_enum:
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case lang_object_symbols_statement_enum:
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case lang_output_statement_enum:
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case lang_target_statement_enum:
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case lang_input_statement_enum:
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case lang_assignment_statement_enum:
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case lang_padding_statement_enum:
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case lang_address_statement_enum:
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case lang_fill_statement_enum:
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break;
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default:
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FAIL ();
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break;
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}
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}
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return FALSE;
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}
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/* Call-back for ppc64_elf_size_stubs. */
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/* Create a new stub section, and arrange for it to be linked
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immediately before INPUT_SECTION. */
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static asection *
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ppc_add_stub_section (const char *stub_sec_name, asection *input_section)
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{
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asection *stub_sec;
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flagword flags;
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asection *output_section;
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lang_output_section_statement_type *os;
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struct hook_stub_info info;
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flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
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| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP);
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stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
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stub_sec_name, flags);
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if (stub_sec == NULL
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|| !bfd_set_section_alignment (stub_file->the_bfd, stub_sec,
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(params.plt_stub_align > 5
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? params.plt_stub_align
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: 5)))
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goto err_ret;
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output_section = input_section->output_section;
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os = lang_output_section_get (output_section);
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info.input_section = input_section;
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lang_list_init (&info.add);
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lang_add_section (&info.add, stub_sec, NULL, os);
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if (info.add.head == NULL)
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goto err_ret;
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if (hook_in_stub (&info, &os->children.head))
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return stub_sec;
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err_ret:
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einfo ("%X%P: can not make stub section: %E\n");
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return NULL;
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}
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|
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/* Another call-back for ppc64_elf_size_stubs. */
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static void
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ppc_layout_sections_again (void)
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{
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/* If we have changed sizes of the stub sections, then we need
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to recalculate all the section offsets. This may mean we need to
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add even more stubs. */
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gld${EMULATION_NAME}_map_segments (TRUE);
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if (!bfd_link_relocatable (&link_info))
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ppc64_elf_set_toc (&link_info, link_info.output_bfd);
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need_laying_out = -1;
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}
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|
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static void
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build_toc_list (lang_statement_union_type *statement)
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{
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if (statement->header.type == lang_input_section_enum)
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{
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asection *i = statement->input_section.section;
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if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS
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&& (i->flags & SEC_EXCLUDE) == 0
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&& i->output_section == toc_section)
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{
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if (!ppc64_elf_next_toc_section (&link_info, i))
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einfo ("%X%P: linker script separates .got and .toc\n");
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}
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}
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}
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|
|
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static void
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build_section_lists (lang_statement_union_type *statement)
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{
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if (statement->header.type == lang_input_section_enum)
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{
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asection *i = statement->input_section.section;
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if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms
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&& (i->flags & SEC_EXCLUDE) == 0
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&& i->output_section != NULL
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&& i->output_section->owner == link_info.output_bfd)
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{
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if (!ppc64_elf_next_input_section (&link_info, i))
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einfo ("%X%P: can not size stub section: %E\n");
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}
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}
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}
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|
|
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/* Call the back-end function to set TOC base after we have placed all
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the sections. */
|
|
static void
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gld${EMULATION_NAME}_after_allocation (void)
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|
{
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int ret;
|
|
|
|
/* If generating a relocatable output file, then we don't have any
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stubs. */
|
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if (stub_file != NULL && !bfd_link_relocatable (&link_info))
|
|
{
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ret = ppc64_elf_setup_section_lists (&link_info);
|
|
if (ret < 0)
|
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einfo ("%X%P: can not size stub section: %E\n");
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|
else
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|
{
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|
ppc64_elf_start_multitoc_partition (&link_info);
|
|
|
|
if (!params.no_multi_toc)
|
|
{
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|
toc_section = bfd_get_section_by_name (link_info.output_bfd,
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toc_section_name);
|
|
if (toc_section != NULL)
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lang_for_each_statement (build_toc_list);
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|
}
|
|
|
|
if (ppc64_elf_layout_multitoc (&link_info)
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|
&& !params.no_multi_toc
|
|
&& toc_section != NULL)
|
|
lang_for_each_statement (build_toc_list);
|
|
|
|
ppc64_elf_finish_multitoc_partition (&link_info);
|
|
|
|
lang_for_each_statement (build_section_lists);
|
|
|
|
if (!ppc64_elf_check_init_fini (&link_info))
|
|
einfo ("%P: .init/.fini fragments use differing TOC pointers\n");
|
|
|
|
/* Call into the BFD backend to do the real work. */
|
|
if (!ppc64_elf_size_stubs (&link_info))
|
|
einfo ("%X%P: can not size stub section: %E\n");
|
|
}
|
|
}
|
|
|
|
/* We can't parse and merge .eh_frame until the glink .eh_frame has
|
|
been generated. Otherwise the glink .eh_frame CIE won't be
|
|
merged with other CIEs, and worse, the glink .eh_frame FDEs won't
|
|
be listed in .eh_frame_hdr. */
|
|
ret = bfd_elf_discard_info (link_info.output_bfd, &link_info);
|
|
if (ret < 0)
|
|
{
|
|
einfo ("%X%P: .eh_frame/.stab edit: %E\n");
|
|
return;
|
|
}
|
|
else if (ret > 0)
|
|
need_laying_out = 1;
|
|
|
|
/* Call map_segments regardless of the state of need_laying_out.
|
|
need_laying_out set to -1 means we have just laid everything out,
|
|
but ppc64_elf_size_stubs strips .branch_lt and .eh_frame if
|
|
unneeded, after ppc_layout_sections_again. Another call removes
|
|
these sections from the segment map. Their presence is
|
|
innocuous except for confusing ELF_SECTION_IN_SEGMENT. */
|
|
gld${EMULATION_NAME}_map_segments (need_laying_out > 0);
|
|
|
|
if (need_laying_out != -1 && !bfd_link_relocatable (&link_info))
|
|
ppc64_elf_set_toc (&link_info, link_info.output_bfd);
|
|
}
|
|
|
|
|
|
/* Final emulation specific call. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_finish (void)
|
|
{
|
|
char *msg = NULL;
|
|
char *line, *endline;
|
|
|
|
/* e_entry on PowerPC64 points to the function descriptor for
|
|
_start. If _start is missing, default to the first function
|
|
descriptor in the .opd section. */
|
|
if (stub_file != NULL
|
|
&& (elf_elfheader (link_info.output_bfd)->e_flags & EF_PPC64_ABI) == 1)
|
|
entry_section = ".opd";
|
|
|
|
if (params.emit_stub_syms < 0)
|
|
params.emit_stub_syms = 1;
|
|
if (stub_file != NULL
|
|
&& !bfd_link_relocatable (&link_info)
|
|
&& !ppc64_elf_build_stubs (&link_info, config.stats ? &msg : NULL))
|
|
einfo ("%X%P: can not build stubs: %E\n");
|
|
|
|
fflush (stdout);
|
|
for (line = msg; line != NULL; line = endline)
|
|
{
|
|
endline = strchr (line, '\n');
|
|
if (endline != NULL)
|
|
*endline++ = '\0';
|
|
fprintf (stderr, "%s: %s\n", program_name, line);
|
|
}
|
|
fflush (stderr);
|
|
if (msg != NULL)
|
|
free (msg);
|
|
|
|
ppc64_elf_restore_symbols (&link_info);
|
|
finish_default ();
|
|
}
|
|
|
|
|
|
/* Add a pattern matching ".foo" for every "foo" in a version script.
|
|
|
|
The reason for doing this is that many shared library version
|
|
scripts export a selected set of functions or data symbols, forcing
|
|
others local. eg.
|
|
|
|
. VERS_1 {
|
|
. global:
|
|
. this; that; some; thing;
|
|
. local:
|
|
. *;
|
|
. };
|
|
|
|
To make the above work for PowerPC64, we need to export ".this",
|
|
".that" and so on, otherwise only the function descriptor syms are
|
|
exported. Lack of an exported function code sym may cause a
|
|
definition to be pulled in from a static library. */
|
|
|
|
static struct bfd_elf_version_expr *
|
|
gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry)
|
|
{
|
|
struct bfd_elf_version_expr *dot_entry;
|
|
unsigned int len;
|
|
char *dot_pat;
|
|
|
|
if (!dotsyms
|
|
|| entry->pattern[0] == '.'
|
|
|| (!entry->literal && entry->pattern[0] == '*'))
|
|
return entry;
|
|
|
|
dot_entry = xmalloc (sizeof *dot_entry);
|
|
*dot_entry = *entry;
|
|
dot_entry->next = entry;
|
|
len = strlen (entry->pattern) + 2;
|
|
dot_pat = xmalloc (len);
|
|
dot_pat[0] = '.';
|
|
memcpy (dot_pat + 1, entry->pattern, len - 1);
|
|
dot_entry->pattern = dot_pat;
|
|
dot_entry->script = 1;
|
|
return dot_entry;
|
|
}
|
|
|
|
|
|
/* Avoid processing the fake stub_file in vercheck, stat_needed and
|
|
check_needed routines. */
|
|
|
|
static void (*real_func) (lang_input_statement_type *);
|
|
|
|
static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l)
|
|
{
|
|
if (l != stub_file)
|
|
(*real_func) (l);
|
|
}
|
|
|
|
static void
|
|
ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
|
|
{
|
|
real_func = func;
|
|
lang_for_each_input_file (&ppc_for_each_input_file_wrapper);
|
|
}
|
|
|
|
#define lang_for_each_input_file ppc_lang_for_each_input_file
|
|
|
|
EOF
|
|
|
|
if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
|
|
fragment <<EOF
|
|
/* Special handling for embedded SPU executables. */
|
|
extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
|
|
static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
|
|
|
|
static bfd_boolean
|
|
ppc64_recognized_file (lang_input_statement_type *entry)
|
|
{
|
|
if (embedded_spu_file (entry, "-m64"))
|
|
return TRUE;
|
|
|
|
return gld${EMULATION_NAME}_load_symbols (entry);
|
|
}
|
|
EOF
|
|
LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file
|
|
fi
|
|
|
|
# Define some shell vars to insert bits of code into the standard elf
|
|
# parse_args and list_options functions.
|
|
#
|
|
PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
|
|
#define OPTION_STUBGROUP_SIZE 321
|
|
#define OPTION_PLT_STATIC_CHAIN (OPTION_STUBGROUP_SIZE + 1)
|
|
#define OPTION_NO_PLT_STATIC_CHAIN (OPTION_PLT_STATIC_CHAIN + 1)
|
|
#define OPTION_PLT_THREAD_SAFE (OPTION_NO_PLT_STATIC_CHAIN + 1)
|
|
#define OPTION_NO_PLT_THREAD_SAFE (OPTION_PLT_THREAD_SAFE + 1)
|
|
#define OPTION_PLT_ALIGN (OPTION_NO_PLT_THREAD_SAFE + 1)
|
|
#define OPTION_NO_PLT_ALIGN (OPTION_PLT_ALIGN + 1)
|
|
#define OPTION_STUBSYMS (OPTION_NO_PLT_ALIGN + 1)
|
|
#define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1)
|
|
#define OPTION_SAVRES (OPTION_NO_STUBSYMS + 1)
|
|
#define OPTION_NO_SAVRES (OPTION_SAVRES + 1)
|
|
#define OPTION_DOTSYMS (OPTION_NO_SAVRES + 1)
|
|
#define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1)
|
|
#define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1)
|
|
#define OPTION_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
|
|
#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_TLS_GET_ADDR_OPT + 1)
|
|
#define OPTION_NO_OPD_OPT (OPTION_NO_TLS_GET_ADDR_OPT + 1)
|
|
#define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1)
|
|
#define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_OPT + 1)
|
|
#define OPTION_NO_TOC_SORT (OPTION_NO_MULTI_TOC + 1)
|
|
#define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_TOC_SORT + 1)
|
|
'
|
|
|
|
PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
|
|
{ "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
|
|
{ "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN },
|
|
{ "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN },
|
|
{ "plt-thread-safe", no_argument, NULL, OPTION_PLT_THREAD_SAFE },
|
|
{ "no-plt-thread-safe", no_argument, NULL, OPTION_NO_PLT_THREAD_SAFE },
|
|
{ "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN },
|
|
{ "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN },
|
|
{ "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
|
|
{ "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
|
|
{ "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
|
|
{ "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
|
|
{ "save-restore-funcs", no_argument, NULL, OPTION_SAVRES },
|
|
{ "no-save-restore-funcs", no_argument, NULL, OPTION_NO_SAVRES },
|
|
{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
|
|
{ "tls-get-addr-optimize", no_argument, NULL, OPTION_TLS_GET_ADDR_OPT },
|
|
{ "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },
|
|
{ "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
|
|
{ "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
|
|
{ "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC },
|
|
{ "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT },
|
|
{ "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD },
|
|
'
|
|
|
|
PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
|
|
fprintf (file, _("\
|
|
--stub-group-size=N Maximum size of a group of input sections that\n\
|
|
can be handled by one stub section. A negative\n\
|
|
value locates all stubs before their branches\n\
|
|
(with a group size of -N), while a positive\n\
|
|
value allows two groups of input sections, one\n\
|
|
before, and one after each stub section.\n\
|
|
Values of +/-1 indicate the linker should\n\
|
|
choose suitable defaults.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--plt-static-chain PLT call stubs should load r11.${DEFAULT_PLT_STATIC_CHAIN- (default)}\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-plt-static-chain PLT call stubs should not load r11.${DEFAULT_PLT_STATIC_CHAIN+ (default)}\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--plt-thread-safe PLT call stubs with load-load barrier.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-plt-thread-safe PLT call stubs without barrier.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--plt-align [=<align>] Align PLT call stubs to fit cache lines.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-plt-align Dont'\''t align individual PLT call stubs.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--emit-stub-syms Label linker stubs with a symbol.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--dotsyms For every version pattern \"foo\" in a version\n\
|
|
script, add \".foo\" so that function code\n\
|
|
symbols are treated the same as function\n\
|
|
descriptor symbols. Defaults to on.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-dotsyms Don'\''t do anything special in version scripts.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--save-restore-funcs Provide register save and restore routines used\n\
|
|
by gcc -Os code. Defaults to on for normal\n\
|
|
final link, off for ld -r.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-save-restore-funcs Don'\''t provide these routines.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--tls-get-addr-optimize Force use of special __tls_get_addr call.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-opd-optimize Don'\''t optimize the OPD section.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-toc-optimize Don'\''t optimize the TOC section.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-multi-toc Disallow automatic multiple toc sections.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--no-toc-sort Don'\''t sort TOC and GOT sections.\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--non-overlapping-opd Canonicalize .opd, so that there are no\n\
|
|
overlapping .opd entries.\n"
|
|
));
|
|
'
|
|
|
|
PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
|
|
case OPTION_STUBGROUP_SIZE:
|
|
{
|
|
const char *end;
|
|
params.group_size = bfd_scan_vma (optarg, &end, 0);
|
|
if (*end)
|
|
einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
|
|
}
|
|
break;
|
|
|
|
case OPTION_PLT_STATIC_CHAIN:
|
|
params.plt_static_chain = 1;
|
|
break;
|
|
|
|
case OPTION_NO_PLT_STATIC_CHAIN:
|
|
params.plt_static_chain = 0;
|
|
break;
|
|
|
|
case OPTION_PLT_THREAD_SAFE:
|
|
params.plt_thread_safe = 1;
|
|
break;
|
|
|
|
case OPTION_NO_PLT_THREAD_SAFE:
|
|
params.plt_thread_safe = 0;
|
|
break;
|
|
|
|
case OPTION_PLT_ALIGN:
|
|
if (optarg != NULL)
|
|
{
|
|
char *end;
|
|
unsigned long val = strtoul (optarg, &end, 0);
|
|
if (*end || val > 8)
|
|
einfo (_("%P%F: invalid --plt-align `%s'\''\n"), optarg);
|
|
params.plt_stub_align = val;
|
|
}
|
|
else
|
|
params.plt_stub_align = 5;
|
|
break;
|
|
|
|
case OPTION_NO_PLT_ALIGN:
|
|
params.plt_stub_align = 0;
|
|
break;
|
|
|
|
case OPTION_STUBSYMS:
|
|
params.emit_stub_syms = 1;
|
|
break;
|
|
|
|
case OPTION_NO_STUBSYMS:
|
|
params.emit_stub_syms = 0;
|
|
break;
|
|
|
|
case OPTION_DOTSYMS:
|
|
dotsyms = 1;
|
|
break;
|
|
|
|
case OPTION_NO_DOTSYMS:
|
|
dotsyms = 0;
|
|
break;
|
|
|
|
case OPTION_SAVRES:
|
|
params.save_restore_funcs = 1;
|
|
break;
|
|
|
|
case OPTION_NO_SAVRES:
|
|
params.save_restore_funcs = 0;
|
|
break;
|
|
|
|
case OPTION_NO_TLS_OPT:
|
|
no_tls_opt = 1;
|
|
break;
|
|
|
|
case OPTION_TLS_GET_ADDR_OPT:
|
|
params.tls_get_addr_opt = 1;
|
|
break;
|
|
|
|
case OPTION_NO_TLS_GET_ADDR_OPT:
|
|
params.tls_get_addr_opt = 0;
|
|
break;
|
|
|
|
case OPTION_NO_OPD_OPT:
|
|
no_opd_opt = 1;
|
|
break;
|
|
|
|
case OPTION_NO_TOC_OPT:
|
|
no_toc_opt = 1;
|
|
break;
|
|
|
|
case OPTION_NO_MULTI_TOC:
|
|
params.no_multi_toc = 1;
|
|
break;
|
|
|
|
case OPTION_NO_TOC_SORT:
|
|
no_toc_sort = 1;
|
|
break;
|
|
|
|
case OPTION_NON_OVERLAPPING_OPD:
|
|
params.non_overlapping_opd = 1;
|
|
break;
|
|
|
|
case OPTION_TRADITIONAL_FORMAT:
|
|
no_tls_opt = 1;
|
|
params.tls_get_addr_opt = 0;
|
|
no_opd_opt = 1;
|
|
no_toc_opt = 1;
|
|
params.no_multi_toc = 1;
|
|
no_toc_sort = 1;
|
|
params.plt_static_chain = 1;
|
|
return FALSE;
|
|
'
|
|
|
|
# Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
|
|
#
|
|
LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern
|
|
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
|
|
LDEMUL_AFTER_OPEN=ppc_after_open
|
|
LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
|
|
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
|
|
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
|