binutils-gdb/ld/emultempl/cskyelf.em
Alan Modra 075a2b89c7 Rename elf32.em to elf.em
* emultempl/elf32.em: Remove "misnamed" comment.  Rename to..
	* emultempl/elf.em: ..this.
	* configure.ac (elf_list_options): Adjust TEMPLATE_NAME grep.
	* emulparams/aarch64cloudabi.sh (TEMPLATE_NAME): Set to elf.
	* emulparams/aarch64elf.sh: Likewise.
	* emulparams/aarch64elf32.sh: Likewise.
	* emulparams/aarch64fbsd.sh: Likewise.
	* emulparams/aarch64linux.sh: Likewise.
	* emulparams/aarch64linux32.sh: Likewise.
	* emulparams/arcelf.sh: Likewise.
	* emulparams/arcelf_prof.sh: Likewise.
	* emulparams/arclinux.sh: Likewise.
	* emulparams/arclinux_prof.sh: Likewise.
	* emulparams/arcv2elf.sh: Likewise.
	* emulparams/arcv2elfx.sh: Likewise.
	* emulparams/armelf.sh: Likewise.
	* emulparams/armelf_fuchsia.sh: Likewise.
	* emulparams/armelf_linux.sh: Likewise.
	* emulparams/armelf_phoenix.sh: Likewise.
	* emulparams/armnto.sh: Likewise.
	* emulparams/avr1.sh: Likewise.
	* emulparams/avr2.sh: Likewise.
	* emulparams/avr25.sh: Likewise.
	* emulparams/avr3.sh: Likewise.
	* emulparams/avr31.sh: Likewise.
	* emulparams/avr35.sh: Likewise.
	* emulparams/avr4.sh: Likewise.
	* emulparams/avr5.sh: Likewise.
	* emulparams/avr51.sh: Likewise.
	* emulparams/avr6.sh: Likewise.
	* emulparams/avrtiny.sh: Likewise.
	* emulparams/avrxmega1.sh: Likewise.
	* emulparams/avrxmega2.sh: Likewise.
	* emulparams/avrxmega3.sh: Likewise.
	* emulparams/avrxmega4.sh: Likewise.
	* emulparams/avrxmega5.sh: Likewise.
	* emulparams/avrxmega6.sh: Likewise.
	* emulparams/avrxmega7.sh: Likewise.
	* emulparams/criself.sh: Likewise.
	* emulparams/crislinux.sh: Likewise.
	* emulparams/cskyelf.sh: Likewise.
	* emulparams/d10velf.sh: Likewise.
	* emulparams/elf32_sparc.sh: Likewise.
	* emulparams/elf32_spu.sh: Likewise.
	* emulparams/elf32_tic6x_le.sh: Likewise.
	* emulparams/elf32_x86_64.sh: Likewise.
	* emulparams/elf32am33lin.sh: Likewise.
	* emulparams/elf32bfin.sh: Likewise.
	* emulparams/elf32bfinfd.sh: Likewise.
	* emulparams/elf32bmip.sh: Likewise.
	* emulparams/elf32bmipn32-defs.sh: Likewise.
	* emulparams/elf32cr16.sh: Likewise.
	* emulparams/elf32cr16c.sh: Likewise.
	* emulparams/elf32crx.sh: Likewise.
	* emulparams/elf32epiphany.sh: Likewise.
	* emulparams/elf32epiphany_4x4.sh: Likewise.
	* emulparams/elf32frvfd.sh: Likewise.
	* emulparams/elf32ip2k.sh: Likewise.
	* emulparams/elf32lm32.sh: Likewise.
	* emulparams/elf32lm32fd.sh: Likewise.
	* emulparams/elf32lriscv-defs.sh: Likewise.
	* emulparams/elf32m32c.sh: Likewise.
	* emulparams/elf32mb_linux.sh: Likewise.
	* emulparams/elf32mbel_linux.sh: Likewise.
	* emulparams/elf32mcore.sh: Likewise.
	* emulparams/elf32mep.sh: Likewise.
	* emulparams/elf32metag.sh: Likewise.
	* emulparams/elf32microblaze.sh: Likewise.
	* emulparams/elf32mipswindiss.sh: Likewise.
	* emulparams/elf32or1k.sh: Likewise.
	* emulparams/elf32ppccommon.sh: Likewise.
	* emulparams/elf32rl78.sh: Likewise.
	* emulparams/elf32rx.sh: Likewise.
	* emulparams/elf32tilegx.sh: Likewise.
	* emulparams/elf32tilepro.sh: Likewise.
	* emulparams/elf32vax.sh: Likewise.
	* emulparams/elf32visium.sh: Likewise.
	* emulparams/elf32xc16x.sh: Likewise.
	* emulparams/elf32xc16xl.sh: Likewise.
	* emulparams/elf32xc16xs.sh: Likewise.
	* emulparams/elf32xstormy16.sh: Likewise.
	* emulparams/elf32xtensa.sh: Likewise.
	* emulparams/elf64_aix.sh: Likewise.
	* emulparams/elf64_ia64.sh: Likewise.
	* emulparams/elf64_s390.sh: Likewise.
	* emulparams/elf64_sparc.sh: Likewise.
	* emulparams/elf64alpha.sh: Likewise.
	* emulparams/elf64bpf.sh: Likewise.
	* emulparams/elf64hppa.sh: Likewise.
	* emulparams/elf64mmix.sh: Likewise.
	* emulparams/elf64rdos.sh: Likewise.
	* emulparams/elf64tilegx.sh: Likewise.
	* emulparams/elf_i386.sh: Likewise.
	* emulparams/elf_i386_be.sh: Likewise.
	* emulparams/elf_i386_ldso.sh: Likewise.
	* emulparams/elf_i386_vxworks.sh: Likewise.
	* emulparams/elf_iamcu.sh: Likewise.
	* emulparams/elf_k1om.sh: Likewise.
	* emulparams/elf_l1om.sh: Likewise.
	* emulparams/elf_s390.sh: Likewise.
	* emulparams/elf_x86_64.sh: Likewise.
	* emulparams/h8300elf.sh: Likewise.
	* emulparams/h8300elf_linux.sh: Likewise.
	* emulparams/hppa64linux.sh: Likewise.
	* emulparams/hppaelf.sh: Likewise.
	* emulparams/hppalinux.sh: Likewise.
	* emulparams/i386lynx.sh: Likewise.
	* emulparams/i386moss.sh: Likewise.
	* emulparams/i386nto.sh: Likewise.
	* emulparams/m32relf.sh: Likewise.
	* emulparams/m32relf_linux.sh: Likewise.
	* emulparams/m68hc11elf.sh: Likewise.
	* emulparams/m68hc11elfb.sh: Likewise.
	* emulparams/m68hc12elf.sh: Likewise.
	* emulparams/m68hc12elfb.sh: Likewise.
	* emulparams/m68kelf.sh: Likewise.
	* emulparams/mn10300.sh: Likewise.
	* emulparams/nds32elf.sh: Likewise.
	* emulparams/nds32elf16m.sh: Likewise.
	* emulparams/nds32elf_linux.sh: Likewise.
	* emulparams/nios2elf.sh: Likewise.
	* emulparams/nios2linux.sh: Likewise.
	* emulparams/pruelf.sh: Likewise.
	* emulparams/score3_elf.sh: Likewise.
	* emulparams/shelf.sh: Likewise.
	* emulparams/shelf_nto.sh: Likewise.
	* emulparams/shelf_vxworks.sh: Likewise.
	* emulparams/shlelf_linux.sh: Likewise.
	* emulparams/shlelf_nto.sh: Likewise.
	* emulparams/v850.sh: Likewise.
	* emulparams/v850_rh850.sh: Likewise.
	* ldelf.c: Update comment.
	* ldelf.h: Likewise.
	* emultempl/aarch64elf.em: Likewise.
	* emultempl/alphaelf.em: Likewise.
	* emultempl/arclinux.em: Likewise.
	* emultempl/armelf.em: Likewise.
	* emultempl/avrelf.em: Likewise.
	* emultempl/bfin.em: Likewise.
	* emultempl/cr16elf.em: Likewise.
	* emultempl/crxelf.em: Likewise.
	* emultempl/cskyelf.em: Likewise.
	* emultempl/elf-generic.em: Likewise.
	* emultempl/elf-x86.em: Likewise.
	* emultempl/epiphanyelf_4x4.em: Likewise.
	* emultempl/hppaelf.em: Likewise.
	* emultempl/ia64elf.em: Likewise.
	* emultempl/m68hc1xelf.em: Likewise.
	* emultempl/m68kelf.em: Likewise.
	* emultempl/metagelf.em: Likewise.
	* emultempl/mmix-elfnmmo.em: Likewise.
	* emultempl/mmixelf.em: Likewise.
	* emultempl/mmo.em: Likewise.
	* emultempl/needrelax.em: Likewise.
	* emultempl/nios2elf.em: Likewise.
	* emultempl/ppc32elf.em: Likewise.
	* emultempl/ppc64elf.em: Likewise.
	* emultempl/pruelf.em: Likewise.
	* emultempl/rxelf.em: Likewise.
	* emultempl/scoreelf.em: Likewise.
	* emultempl/spuelf.em: Likewise.
	* emultempl/tic6xdsbt.em: Likewise.
	* emultempl/v850elf.em: Likewise.
	* emultempl/vms.em: Likewise.
	* emultempl/vxworks.em: Likewise.
	* emultempl/xtensaelf.em: Likewise.
	* scripttempl/arclinux.sc: Likewise.
	* scripttempl/armbpabi.sc: Likewise.
	* scripttempl/elf.sc: Likewise.
	* scripttempl/elf64bpf.sc: Likewise.
	* scripttempl/elf64hppa.sc: Likewise.
	* scripttempl/elf_chaos.sc: Likewise.
	* scripttempl/elfarc.sc: Likewise.
	* scripttempl/elfarcv2.sc: Likewise.
	* scripttempl/elfd10v.sc: Likewise.
	* scripttempl/elfm68hc11.sc: Likewise.
	* scripttempl/elfm68hc12.sc: Likewise.
	* scripttempl/elfm9s12z.sc: Likewise.
	* scripttempl/elfxgate.sc: Likewise.
	* scripttempl/elfxtensa.sc: Likewise.
	* scripttempl/epiphany_4x4.sc: Likewise.
	* scripttempl/iq2000.sc: Likewise.
	* scripttempl/mep.sc: Likewise.
	* scripttempl/nds32elf.sc: Likewise.
	* scripttempl/v850.sc: Likewise.
	* scripttempl/v850_rh850.sc: Likewise.
	* scripttempl/xstormy16.sc: Likewise.
	* testsuite/ld-arm/arm-dyn.ld: Likewise.
	* testsuite/ld-arm/arm-lib.ld: Likewise.
	* testsuite/ld-arm/arm-no-rel-plt.ld: Likewise.
	* testsuite/ld-arm/fdpic-main.ld: Likewise.
	* testsuite/ld-arm/fdpic-shared.ld: Likewise.
	* testsuite/ld-elf/elf.exp: Likewise.
	* testsuite/ld-elf/orphan-region.d: Likewise.
	* testsuite/ld-elf/orphan.d: Likewise.
	* testsuite/ld-elf/pr349.d: Likewise.
	* testsuite/ld-elf/warn2.d: Likewise.
	* testsuite/ld-elfvsb/elf-offset.ld: Likewise.
	* testsuite/ld-mips-elf/mips-dyn.ld: Likewise.
	* testsuite/ld-mips-elf/mips-lib.ld: Likewise.
	* testsuite/ld-scripts/dynamic-sections.t: Likewise.
	* testsuite/ld-shared/elf-offset.ld: Likewise.
	* configure: Regenerate.
2019-09-11 13:45:18 +09:30

335 lines
9.2 KiB
Plaintext

# This shell script emits a C file. -*- C -*-
# Copyright (C) 2013-2019 Free Software Foundation, Inc.
#
# This file is part of 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 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# 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., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
# This file is sourced from elf.em, and defines extra C-SKY ELF
# specific routines.
#
fragment <<EOF
#include "ldctor.h"
#include "elf/csky.h"
/* To use branch stub or not. */
extern bfd_boolean use_branch_stub;
/* Fake input file for stubs. */
static lang_input_statement_type *stub_file;
/* Whether we need to call gldcsky_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;
struct hook_stub_info
{
lang_statement_list_type add;
asection *input_section;
};
/* Traverse the linker tree to find the spot where the stub goes. */
static bfd_boolean
hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
{
lang_statement_union_type *l;
bfd_boolean ret;
for (l = *lp; l != NULL; lp = &l->header.next, l = *lp)
switch (l->header.type)
{
case lang_constructors_statement_enum:
ret = hook_in_stub (info, &constructor_list.head);
if (ret)
return ret;
break;
case lang_output_section_statement_enum:
ret = hook_in_stub (info,
&l->output_section_statement.children.head);
if (ret)
return ret;
break;
case lang_wild_statement_enum:
ret = hook_in_stub (info, &l->wild_statement.children.head);
if (ret)
return ret;
break;
case lang_group_statement_enum:
ret = hook_in_stub (info, &l->group_statement.children.head);
if (ret)
return ret;
break;
case lang_input_section_enum:
if (l->input_section.section == info->input_section)
{
/* We've found our section. Insert the stub immediately
after its associated input section. */
*(info->add.tail) = l->header.next;
l->header.next = info->add.head;
return TRUE;
}
break;
case lang_data_statement_enum:
case lang_reloc_statement_enum:
case lang_object_symbols_statement_enum:
case lang_output_statement_enum:
case lang_target_statement_enum:
case lang_input_statement_enum:
case lang_assignment_statement_enum:
case lang_padding_statement_enum:
case lang_address_statement_enum:
case lang_fill_statement_enum:
break;
default:
FAIL ();
break;
}
return FALSE;
}
EOF
case ${target} in
csky-*-linux-*)
fragment <<EOF
static void
csky_elf_before_parse (void)
{
use_branch_stub = FALSE;
gld${EMULATION_NAME}_before_parse ();
}
EOF
;;
esac
fragment <<EOF
/* This is a convenient point to tell BFD about target specific flags.
After the output has been created, but before inputs are read. */
static void
csky_elf_create_output_section_statements (void)
{
if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
&& elf_object_id (link_info.output_bfd) == CSKY_ELF_DATA))
use_branch_stub = FALSE;
/* If don't use branch stub, just do not emit stub_file. */
if (!use_branch_stub)
return;
stub_file = lang_add_input_file ("linker stubs",
lang_input_file_is_fake_enum, NULL);
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 (link_info.output_bfd),
bfd_get_mach (link_info.output_bfd)))
{
einfo (_("%F%P: can not create BFD: %E\n"));
return;
}
stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
ldlang_add_file (stub_file);
}
/* Call-back for elf32_csky_size_stubs. */
/* Create a new stub section, and arrange for it to be linked
immediately after INPUT_SECTION. */
static asection *
elf32_csky_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;
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
| SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP);
stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
stub_sec_name, flags);
if (stub_sec == NULL)
goto err_ret;
bfd_set_section_alignment (stub_file->the_bfd, stub_sec, 3);
output_section = input_section->output_section;
secname = bfd_get_section_name (output_section->owner, output_section);
os = lang_output_section_find (secname);
info.input_section = input_section;
lang_list_init (&info.add);
lang_add_section (&info.add, stub_sec, NULL, os);
if (info.add.head == NULL)
goto err_ret;
if (hook_in_stub (&info, &os->children.head))
return stub_sec;
err_ret:
einfo (_("%X%P: can not make stub section: %E\n"));
return NULL;
}
/* Another call-back for elf_csky_size_stubs. */
static void
gldcsky_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;
}
static void
build_section_lists (lang_statement_union_type *statement)
{
if (statement->header.type == lang_input_section_enum)
{
asection *i = statement->input_section.section;
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_csky_next_input_section (&link_info, i);
}
}
static void
gld${EMULATION_NAME}_after_allocation (void)
{
/* bfd_elf32_discard_info just plays with debugging sections,
ie. doesn't affect any code, so we can delay resizing the
sections. It's likely we'll resize everything in the process of
adding stubs. */
if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
need_laying_out = 1;
/* If generating a relocatable output file, then we don't
have to examine the relocs. */
if (stub_file != NULL && !bfd_link_relocatable (&link_info))
{
int ret = elf32_csky_setup_section_lists (link_info.output_bfd,
&link_info);
if (ret < 0)
{
einfo (_("%X%P: could not compute sections lists for stub generation: %E\n"));
return;
}
else if (ret != 0)
{
lang_for_each_statement (build_section_lists);
/* Call into the BFD backend to do the real work. */
if (! elf32_csky_size_stubs (link_info.output_bfd,
stub_file->the_bfd,
&link_info,
group_size,
&elf32_csky_add_stub_section,
&gldcsky_layout_sections_again))
{
einfo (_("%X%P: cannot size stub section: %E\n"));
return;
}
}
}
if (need_laying_out != -1)
ldelf_map_segments (need_laying_out);
}
static void
gld${EMULATION_NAME}_finish (void)
{
if (stub_file != NULL
&& !bfd_link_relocatable (&link_info)
&& stub_file->the_bfd->sections != NULL
&& !elf32_csky_build_stubs (&link_info))
einfo (_("%X%P: cannot build stubs: %E\n"));
finish_default ();
}
EOF
# This code gets inserted into the generic elf32.sc linker script
# and allows us to define our own command line switches.
PARSE_AND_LIST_PROLOGUE='
#define OPTION_BRANCH_STUB 301
#define OPTION_NO_BRANCH_STUB 302
#define OPTION_STUBGROUP_SIZE 303
'
PARSE_AND_LIST_LONGOPTS='
{"branch-stub", no_argument, NULL, OPTION_BRANCH_STUB},
{"no-branch-stub", no_argument, NULL, OPTION_NO_BRANCH_STUB},
{"stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE},
'
PARSE_AND_LIST_OPTIONS='
fprintf (file, _(" --[no-]branch-stub\n"));
fprintf (file, _("\t\t\tDisable/enable use of stubs to expand branch "
"instructions that cannot reach the target.\n"));
fprintf (file, _(" --stub-group-size=N\n"));
fprintf (file, _("\t\t\tMaximum size of a group of input sections "
"handled by one stub section."));
'
PARSE_AND_LIST_ARGS_CASES='
case OPTION_BRANCH_STUB:
use_branch_stub = TRUE;
break;
case OPTION_NO_BRANCH_STUB:
use_branch_stub = FALSE;
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;
'
case ${target} in
csky-*-linux-*) LDEMUL_BEFORE_PARSE=csky_elf_before_parse ;;
esac
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=csky_elf_create_output_section_statements
LDEMUL_FINISH=gld${EMULATION_NAME}_finish