# This shell script emits a C file. -*- C -*-
-# Copyright (C) 1991, 93, 94, 95, 97, 99, 2000
-# Free Software Foundation, Inc.
+# Copyright (C) 1991-2021 Free Software Foundation, Inc.
#
-# This file is part of GLD, the Gnu Linker.
+# This file is part of the GNU Binutils.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
#
-# This file is sourced from elf32.em, and defines extra hppa-elf
+# This file is sourced from elf.em, and defines extra hppa-elf
# specific routines.
#
-cat >>e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
#include "ldctor.h"
#include "elf32-hppa.h"
-static void hppaelf_create_output_section_statements PARAMS ((void));
-static void hppaelf_delete_padding_statements
- PARAMS ((lang_statement_list_type *));
-static asection *hppaelf_add_stub_section
- PARAMS ((const char *, asection *));
-static void hppaelf_layaout_sections_again PARAMS ((void));
-static void hppaelf_finish PARAMS ((void));
-
/* Fake input file for stubs. */
static lang_input_statement_type *stub_file;
stubs. */
static int multi_subspace = 0;
+/* Whether we need to call hppa_layout_sections_again. */
+static int need_laying_out = 0;
+
+/* Maximum size of a group of input sections that can be handled by
+ one stub section. A value of +/-1 indicates the bfd back-end
+ should use a suitable default size. */
+static bfd_signed_vma group_size = 1;
+
+/* Stops the linker merging .text sections on a relocatable link,
+ and adds millicode library to the list of input files. */
+
+static void
+hppaelf_after_parse (void)
+{
+ if (bfd_link_relocatable (&link_info))
+ lang_add_unique (".text");
+
+ /* Enable this once we split millicode stuff from libgcc:
+ lang_add_input_file ("milli",
+ lang_input_file_is_l_enum,
+ NULL);
+ */
+
+ ldelf_after_parse ();
+}
/* This is called before the input files are opened. We create a new
fake input file to hold the stub sections. */
static void
-hppaelf_create_output_section_statements ()
+hppaelf_create_output_section_statements (void)
{
+ if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
+ && (elf_object_id (link_info.output_bfd) == HPPA32_ELF_DATA
+ || elf_object_id (link_info.output_bfd) == HPPA64_ELF_DATA)))
+ return;
+
stub_file = lang_add_input_file ("linker stubs",
lang_input_file_is_fake_enum,
NULL);
- stub_file->the_bfd = bfd_create ("linker stubs", output_bfd);
+ stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd);
if (stub_file->the_bfd == NULL
|| ! bfd_set_arch_mach (stub_file->the_bfd,
- bfd_get_arch (output_bfd),
- bfd_get_mach (output_bfd)))
+ bfd_get_arch (link_info.output_bfd),
+ bfd_get_mach (link_info.output_bfd)))
{
- einfo ("%X%P: can not create BFD %E\n");
+ einfo (_("%F%P: can not create BFD: %E\n"));
return;
}
+ stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
ldlang_add_file (stub_file);
-}
-
-/* Walk all the lang statements splicing out any padding statements from
- the list. */
-
-static void
-hppaelf_delete_padding_statements (list)
- lang_statement_list_type *list;
-{
- lang_statement_union_type *s;
- lang_statement_union_type **ps;
- for (ps = &list->head; (s = *ps) != NULL; ps = &s->next)
- {
- switch (s->header.type)
- {
-
- /* We want to recursively walk these sections. */
- case lang_constructors_statement_enum:
- hppaelf_delete_padding_statements (&constructor_list);
- break;
-
- case lang_output_section_statement_enum:
- hppaelf_delete_padding_statements (&s->output_section_statement.children);
- break;
-
- case lang_group_statement_enum:
- hppaelf_delete_padding_statements (&s->group_statement.children);
- break;
-
- case lang_wild_statement_enum:
- hppaelf_delete_padding_statements (&s->wild_statement.children);
- break;
-
- /* Here's what we are really looking for. Splice these out of
- the list. */
- case lang_padding_statement_enum:
- *ps = s->next;
- if (*ps == NULL)
- list->tail = ps;
- break;
-
- /* We don't care about these cases. */
- case lang_data_statement_enum:
- case lang_object_symbols_statement_enum:
- case lang_output_statement_enum:
- case lang_target_statement_enum:
- case lang_input_section_enum:
- case lang_input_statement_enum:
- case lang_assignment_statement_enum:
- case lang_address_statement_enum:
- break;
-
- default:
- abort ();
- break;
- }
- }
+ elf32_hppa_init_stub_bfd (stub_file->the_bfd, &link_info);
}
/* Traverse the linker tree to find the spot where the stub goes. */
-static boolean hook_in_stub
- PARAMS ((struct hook_stub_info *, lang_statement_union_type **));
-
-static boolean
-hook_in_stub (info, lp)
- struct hook_stub_info *info;
- lang_statement_union_type **lp;
+static bfd_boolean
+hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
{
lang_statement_union_type *l;
- boolean ret;
+ bfd_boolean ret;
- for (; (l = *lp) != NULL; lp = &l->next)
+ for (; (l = *lp) != NULL; lp = &l->header.next)
{
switch (l->header.type)
{
before its associated input section. */
*lp = info->add.head;
*(info->add.tail) = l;
- return true;
+ return TRUE;
}
break;
break;
}
}
- return false;
+ return FALSE;
}
immediately before INPUT_SECTION. */
static asection *
-hppaelf_add_stub_section (stub_name, input_section)
- const char *stub_name;
- asection *input_section;
+hppaelf_add_stub_section (const char *stub_sec_name, asection *input_section)
{
asection *stub_sec;
flagword flags;
asection *output_section;
- const char *secname;
lang_output_section_statement_type *os;
struct hook_stub_info info;
- stub_sec = bfd_make_section_anyway (stub_file->the_bfd, stub_name);
- if (stub_sec == NULL)
- goto err_ret;
-
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
| SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP);
- if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags))
+ stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
+ stub_sec_name, flags);
+ if (stub_sec == NULL)
goto err_ret;
output_section = input_section->output_section;
- secname = bfd_get_section_name (output_section->owner, output_section);
- os = lang_output_section_find (secname);
+ os = lang_output_section_get (output_section);
info.input_section = input_section;
lang_list_init (&info.add);
- wild_doit (&info.add, stub_sec, os, stub_file);
+ lang_add_section (&info.add, stub_sec, NULL, os);
if (info.add.head == NULL)
goto err_ret;
return stub_sec;
err_ret:
- einfo ("%X%P: can not make stub section: %E\n");
+ einfo (_("%X%P: can not make stub section: %E\n"));
return NULL;
}
/* Another call-back for elf32_hppa_size_stubs. */
static void
-hppaelf_layaout_sections_again ()
+hppaelf_layout_sections_again (void)
{
/* If we have changed sizes of the stub sections, then we need
to recalculate all the section offsets. This may mean we need to
add even more stubs. */
+ ldelf_map_segments (TRUE);
+ need_laying_out = -1;
+}
- /* Delete all the padding statements, they're no longer valid. */
- hppaelf_delete_padding_statements (stat_ptr);
-
- /* Resize the sections. */
- lang_size_sections (stat_ptr->head, abs_output_section,
- &stat_ptr->head, 0, (bfd_vma) 0, false);
- /* Redo special stuff. */
- ldemul_after_allocation ();
+static void
+build_section_lists (lang_statement_union_type *statement)
+{
+ if (statement->header.type == lang_input_section_enum)
+ {
+ asection *i = statement->input_section.section;
- /* Do the assignments again. */
- lang_do_assignments (stat_ptr->head, abs_output_section,
- (fill_type) 0, (bfd_vma) 0);
+ if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS
+ && (i->flags & SEC_EXCLUDE) == 0
+ && i->output_section != NULL
+ && i->output_section->owner == link_info.output_bfd)
+ {
+ elf32_hppa_next_input_section (&link_info, i);
+ }
+ }
}
-/* Final emulation specific call. For the PA we use this opportunity
- to build linker stubs. */
+/* For the PA we use this opportunity to size and build linker stubs. */
static void
-hppaelf_finish ()
+gld${EMULATION_NAME}_after_allocation (void)
{
- /* If generating a relocateable output file, then we don't
- have to examine the relocs. */
- if (link_info.relocateable)
- return;
-
- /* Call into the BFD backend to do the real work. */
- if (! elf32_hppa_size_stubs (stub_file->the_bfd,
- multi_subspace,
- &link_info,
- &hppaelf_add_stub_section,
- &hppaelf_layaout_sections_again))
- {
- einfo ("%X%P: can not size stub section: %E\n");
- return;
- }
-
- /* Set the global data pointer. */
- if (! elf32_hppa_set_gp (output_bfd, &link_info))
+ int ret;
+
+ /* bfd_elf_discard_info just plays with data and debugging sections,
+ ie. doesn't affect code size, so we can delay resizing the
+ sections. It's likely we'll resize everything in the process of
+ adding stubs. */
+ ret = bfd_elf_discard_info (link_info.output_bfd, &link_info);
+ if (ret < 0)
{
- einfo ("%X%P: can not set gp\n");
+ einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
return;
}
+ else if (ret > 0)
+ need_laying_out = 1;
- /* Now build the linker stubs. */
- if (stub_file->the_bfd->sections != NULL)
+ /* If generating a relocatable output file, then we don't
+ have to examine the relocs. */
+ if (stub_file != NULL && !bfd_link_relocatable (&link_info))
{
- if (! elf32_hppa_build_stubs (&link_info))
- einfo ("%X%P: can not build stubs: %E\n");
- }
-}
-
+ ret = elf32_hppa_setup_section_lists (link_info.output_bfd, &link_info);
+ if (ret != 0)
+ {
+ if (ret < 0)
+ {
+ einfo (_("%X%P: can not size stub section: %E\n"));
+ return;
+ }
-/* Avoid processing the fake stub_file in vercheck, stat_needed and
- check_needed routines. */
+ lang_for_each_statement (build_section_lists);
-static void hppa_for_each_input_file_wrapper
- PARAMS ((lang_input_statement_type *));
-static void hppa_lang_for_each_input_file
- PARAMS ((void (*) (lang_input_statement_type *)));
+ /* Call into the BFD backend to do the real work. */
+ if (! elf32_hppa_size_stubs (link_info.output_bfd,
+ stub_file->the_bfd,
+ &link_info,
+ multi_subspace,
+ group_size,
+ &hppaelf_add_stub_section,
+ &hppaelf_layout_sections_again))
+ {
+ einfo (_("%X%P: can not size stub section: %E\n"));
+ return;
+ }
+ }
+ }
-static void (*real_func) PARAMS ((lang_input_statement_type *));
+ if (need_laying_out != -1)
+ ldelf_map_segments (need_laying_out);
-static void hppa_for_each_input_file_wrapper (l)
- lang_input_statement_type *l;
-{
- if (l != stub_file)
- (*real_func) (l);
-}
+ if (!bfd_link_relocatable (&link_info))
+ {
+ /* Set the global data pointer. */
+ if (! elf32_hppa_set_gp (link_info.output_bfd, &link_info))
+ {
+ einfo (_("%X%P: can not set gp\n"));
+ return;
+ }
-static void
-hppa_lang_for_each_input_file (func)
- void (*func) PARAMS ((lang_input_statement_type *));
-{
- real_func = func;
- lang_for_each_input_file (&hppa_for_each_input_file_wrapper);
+ /* Now build the linker stubs. */
+ if (stub_file != NULL && stub_file->the_bfd->sections != NULL)
+ {
+ if (! elf32_hppa_build_stubs (&link_info))
+ einfo (_("%X%P: can not build stubs: %E\n"));
+ }
+ }
}
-#define lang_for_each_input_file hppa_lang_for_each_input_file
-
EOF
# Define some shell vars to insert bits of code into the standard elf
#
PARSE_AND_LIST_PROLOGUE='
#define OPTION_MULTI_SUBSPACE 301
+#define OPTION_STUBGROUP_SIZE (OPTION_MULTI_SUBSPACE + 1)
'
PARSE_AND_LIST_LONGOPTS='
- { "multi-subspace", no_argument, NULL, OPTION_MULTI_SUBSPACE},
+ { "multi-subspace", no_argument, NULL, OPTION_MULTI_SUBSPACE },
+ { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
'
PARSE_AND_LIST_OPTIONS='
fprintf (file, _("\
--multi-subspace Generate import and export stubs to support\n\
- multiple sub-space shared libraries\n"
+ multiple sub-space shared libraries\n"
+ ));
+ 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"
));
'
case OPTION_MULTI_SUBSPACE:
multi_subspace = 1;
break;
+
+ case OPTION_STUBGROUP_SIZE:
+ {
+ const char *end;
+ group_size = bfd_scan_vma (optarg, &end, 0);
+ if (*end)
+ einfo (_("%F%P: invalid number `%s'\''\n"), optarg);
+ }
+ break;
'
# Put these extra hppaelf routines in ld_${EMULATION_NAME}_emulation
#
-LDEMUL_FINISH=hppaelf_finish
+LDEMUL_AFTER_PARSE=hppaelf_after_parse
+LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=hppaelf_create_output_section_statements
projects / thirdparty / binutils-gdb.git / blobdiff