From f8934abc7dcd4234d3a15ff79488718d559d2c61 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Thu, 10 Jan 2013 09:49:03 +0000 Subject: * common.h: Fix case of "Meta". * metag.h: New file. * dis-asm.h (print_insn_metag): New declaration. * metag.h: New file. * Makefile.am: Add Meta. * Makefile.in: Regenerate. * configure: Regenerate. * configure.in: Add Meta. * disassemble.c: Add Meta support. * metag-dis.c: New file. * Makefile.am: Add Meta. * Makefile.in: Regenerate. * archures.c (bfd_mach_metag): New. * bfd-in2.h: Regenerate. * config.bfd: Add Meta. * configure: Regenerate. * configure.in: Add Meta. * cpu-metag.c: New file. * elf-bfd.h: Add Meta. * elf32-metag.c: New file. * elf32-metag.h: New file. * libbfd.h: Regenerate. * reloc.c: Add Meta relocations. * targets.c: Add Meta. * Makefile.am: Add Meta. * Makefile.in: Regenerate. * config/tc-metag.c: New file. * config/tc-metag.h: New file. * configure.tgt: Add Meta. * doc/Makefile.am: Add Meta. * doc/Makefile.in: Regenerate. * doc/all.texi: Add Meta. * doc/as.texiinfo: Document Meta options. * doc/c-metag.texi: New file. * gas/metag/labelarithmetic.d: New file. * gas/metag/labelarithmetic.s: New file. * gas/metag/metacore12.d: New file. * gas/metag/metacore12.s: New file. * gas/metag/metacore21-invalid.l: New file. * gas/metag/metacore21-invalid.s: New file. * gas/metag/metacore21.d: New file. * gas/metag/metacore21.s: New file. * gas/metag/metacore21ext.d: New file. * gas/metag/metacore21ext.s: New file. * gas/metag/metadsp21-invalid.l: New file. * gas/metag/metadsp21-invalid.s: New file. * gas/metag/metadsp21.d: New file. * gas/metag/metadsp21.s: New file. * gas/metag/metadsp21ext.d: New file. * gas/metag/metadsp21ext.s: New file. * gas/metag/metafpu21.d: New file. * gas/metag/metafpu21.s: New file. * gas/metag/metafpu21ext.d: New file. * gas/metag/metafpu21ext.s: New file. * gas/metag/metag.exp: New file. * gas/metag/tls.d: New file. * gas/metag/tls.s: New file. * Makefile.am: Add Meta. * Makefile.in: Regenerate. * configure.tgt: Add Meta. * emulparams/elf32metag.sh: New file. * emultempl/metagelf.em: New file. * ld-elf/merge.d: Mark Meta as xfail. * ld-gc/start.d: Skip this test on Meta. * ld-gc/personality.d: Skip this test on Meta. * ld-metag/external.s: New file. * ld-metag/metag.exp: New file. * ld-metag/pcrel.d: New file. * ld-metag/pcrel.s: New file. * ld-metag/shared.d: New file. * ld-metag/shared.r: New file. * ld-metag/shared.s: New file. * ld-metag/stub.d: New file. * ld-metag/stub.s: New file. * ld-metag/stub_pic_app.d: New file. * ld-metag/stub_pic_app.r: New file. * ld-metag/stub_pic_app.s: New file. * ld-metag/stub_pic_shared.d: New file. * ld-metag/stub_pic_shared.s: New file. * ld-metag/stub_shared.d: New file. * ld-metag/stub_shared.r: New file. * ld-metag/stub_shared.s: New file. * binutils/readelf.c: (guess_is_rela): Add EM_METAG. (dump_relocations): Add EM_METAG. (get_machine_name): Correct case for Meta. (is_32bit_abs_reloc): Add support for Meta ADDR32 reloc. (is_none_reloc): Add support for Meta NONE reloc. --- ld/emultempl/metagelf.em | 337 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 337 insertions(+) create mode 100644 ld/emultempl/metagelf.em (limited to 'ld/emultempl') diff --git a/ld/emultempl/metagelf.em b/ld/emultempl/metagelf.em new file mode 100644 index 0000000000..8ab12729af --- /dev/null +++ b/ld/emultempl/metagelf.em @@ -0,0 +1,337 @@ +# This shell script emits a C file. -*- C -*- +# Copyright 2013 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 elf32.em, and defines extra metagelf +# specific routines. Taken from hppaelf.em. +# +fragment <xvec != &bfd_elf32_metag_vec) + 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 ("%X%P: can not create BFD %E\n"); + return; + } + + stub_file->the_bfd->flags |= BFD_LINKER_CREATED; + ldlang_add_file (stub_file); +} + + +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) != NULL; lp = &l->header.next) + { + 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 + before its associated input section. */ + *lp = info->add.head; + *(info->add.tail) = l; + 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; +} + + +/* Call-back for elf_metag_size_stubs. */ + +/* Create a new stub section, and arrange for it to be linked + immediately before INPUT_SECTION. */ + +static asection * +metagelf_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; + + 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_metag_size_stubs. */ + +static void +metagelf_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. */ + gld${EMULATION_NAME}_map_segments (TRUE); + need_laying_out = -1; +} + + +static void +build_section_lists (lang_statement_union_type *statement) +{ + if (statement->header.type == lang_input_section_enum) + { + asection *i = statement->input_section.section; + + if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms + && (i->flags & SEC_EXCLUDE) == 0 + && i->output_section != NULL + && i->output_section->owner == link_info.output_bfd) + { + elf_metag_next_input_section (&link_info, i); + } + } +} + + +/* For Meta we use this opportunity to build linker stubs. */ + +static void +gld${EMULATION_NAME}_after_allocation (void) +{ + /* 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. */ + 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 && !link_info.relocatable) + { + int ret = elf_metag_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; + } + + lang_for_each_statement (build_section_lists); + + /* Call into the BFD backend to do the real work. */ + if (! elf_metag_size_stubs (link_info.output_bfd, + stub_file->the_bfd, + &link_info, + group_size, + &metagelf_add_stub_section, + &metagelf_layout_sections_again)) + { + einfo ("%X%P: can not size stub section: %E\n"); + return; + } + } + } + + if (need_laying_out != -1) + gld${EMULATION_NAME}_map_segments (need_laying_out); + + if (! link_info.relocatable) + { + /* Now build the linker stubs. */ + if (stub_file != NULL && stub_file->the_bfd->sections != NULL) + { + if (! elf_metag_build_stubs (&link_info)) + einfo ("%X%P: can not build stubs: %E\n"); + } + } +} + + +/* Avoid processing the fake stub_file in vercheck, stat_needed and + check_needed routines. */ + +static void (*real_func) (lang_input_statement_type *); + +static void metag_for_each_input_file_wrapper (lang_input_statement_type *l) +{ + if (l != stub_file) + (*real_func) (l); +} + +static void +metag_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) +{ + real_func = func; + lang_for_each_input_file (&metag_for_each_input_file_wrapper); +} + +#define lang_for_each_input_file metag_lang_for_each_input_file + +EOF + +# Define some shell vars to insert bits of code into the standard elf +# parse_args and list_options functions. +# +PARSE_AND_LIST_PROLOGUE=' +#define OPTION_STUBGROUP_SIZE 301 +' + +PARSE_AND_LIST_LONGOPTS=' + { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, +' + +PARSE_AND_LIST_OPTIONS=' + fprintf (file, _("\ + --stub-group-size=N Maximum size of a group of input sections that\n\ + can be handled by one stub section. A negative\n\ + value locates all stubs before their branches\n\ + (with a group size of -N), while a positive\n\ + value allows two groups of input sections, one\n\ + before, and one after each stub section.\n\ + Values of +/-1 indicate the linker should\n\ + choose suitable defaults.\n" + )); +' + +PARSE_AND_LIST_ARGS_CASES=' + case OPTION_STUBGROUP_SIZE: + { + const char *end; + group_size = bfd_scan_vma (optarg, &end, 0); + if (*end) + einfo (_("%P%F: invalid number `%s'\''\n"), optarg); + } + break; +' + +# Put these extra metagelf routines in ld_${EMULATION_NAME}_emulation +# +LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation +LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=metagelf_create_output_section_statements -- cgit v1.2.1