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Diffstat (limited to 'ld/emultempl/hppaelf.em')
| -rw-r--r-- | ld/emultempl/hppaelf.em | 405 |
1 files changed, 0 insertions, 405 deletions
diff --git a/ld/emultempl/hppaelf.em b/ld/emultempl/hppaelf.em deleted file mode 100644 index 490ff070d1..0000000000 --- a/ld/emultempl/hppaelf.em +++ /dev/null @@ -1,405 +0,0 @@ -# This shell script emits a C file. -*- C -*- -# Copyright 1991, 1993, 1994, 1997, 1999, 2000, 2001, 2002 -# Free Software Foundation, Inc. -# -# This file is part of GLD, the Gnu Linker. -# -# 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 -# (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -# - -# This file is sourced from elf32.em, and defines extra hppa-elf -# specific routines. -# -cat >>e${EMULATION_NAME}.c <<EOF - -#include "ldctor.h" -#include "elf32-hppa.h" - -static void hppaelf_after_parse PARAMS((void)); -static void hppaelf_create_output_section_statements PARAMS ((void)); -static asection *hppaelf_add_stub_section - PARAMS ((const char *, asection *)); -static void hppaelf_layout_sections_again PARAMS ((void)); -static void gld${EMULATION_NAME}_finish PARAMS ((void)); -static void build_section_lists PARAMS ((lang_statement_union_type *)); - - -/* Fake input file for stubs. */ -static lang_input_statement_type *stub_file; - -/* Type of import/export stubs to build. For a single sub-space model, - we can build smaller import stubs and there is no need for export - 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 () -{ - if (link_info.relocateable) - lang_add_unique (".text"); -#if 0 /* enable this once we split millicode stuff from libgcc */ - else - lang_add_input_file ("milli", - lang_input_file_is_l_enum, - NULL); -#endif -} - -/* 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 () -{ - 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); - if (stub_file->the_bfd == NULL - || ! bfd_set_arch_mach (stub_file->the_bfd, - bfd_get_arch (output_bfd), - bfd_get_mach (output_bfd))) - { - einfo ("%X%P: can not create BFD %E\n"); - return; - } - - 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 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; -{ - lang_statement_union_type *l; - 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 elf32_hppa_size_stubs. */ - -/* Create a new stub section, and arrange for it to be linked - immediately before INPUT_SECTION. */ - -static asection * -hppaelf_add_stub_section (stub_sec_name, input_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_sec_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)) - 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, os, stub_file); - - 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 elf32_hppa_size_stubs. */ - -static void -hppaelf_layout_sections_again () -{ - /* 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. */ - need_laying_out = 0; - - lang_reset_memory_regions (); - - /* Resize the sections. */ - lang_size_sections (stat_ptr->head, abs_output_section, - &stat_ptr->head, 0, (bfd_vma) 0, NULL); - - /* Redo special stuff. */ - ldemul_after_allocation (); - - /* Do the assignments again. */ - lang_do_assignments (stat_ptr->head, abs_output_section, - (fill_type *) 0, (bfd_vma) 0); -} - - -static void -build_section_lists (statement) - lang_statement_union_type *statement; -{ - if (statement->header.type == lang_input_section_enum - && !statement->input_section.ifile->just_syms_flag - && statement->input_section.section->output_section != NULL - && statement->input_section.section->output_section->owner == output_bfd) - { - elf32_hppa_next_input_section (&link_info, - statement->input_section.section); - } -} - - -/* Final emulation specific call. For the PA we use this opportunity - to build linker stubs. */ - -static void -gld${EMULATION_NAME}_finish () -{ - int ret; - - /* If generating a relocatable output file, then we don't - have to examine the relocs. */ - if (link_info.relocateable) - return; - - /* bfd_elf32_discard_info just plays with debugging sections, - ie. doesn't affect any code, so we can delay resizing the - sections. It's likely we'll resize everything in the process of - adding stubs. */ - if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info)) - need_laying_out = 1; - - ret = elf32_hppa_setup_section_lists (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 (! elf32_hppa_size_stubs (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; - } - } - - if (need_laying_out) - hppaelf_layout_sections_again (); - - /* Set the global data pointer. */ - if (! elf32_hppa_set_gp (output_bfd, &link_info)) - { - einfo ("%X%P: can not set gp\n"); - return; - } - - /* Now build the linker stubs. */ - if (stub_file->the_bfd->sections != NULL) - { - if (! elf32_hppa_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 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 *))); - -static void (*real_func) PARAMS ((lang_input_statement_type *)); - -static void hppa_for_each_input_file_wrapper (l) - lang_input_statement_type *l; -{ - if (l != stub_file) - (*real_func) (l); -} - -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); -} - -#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_args and list_options functions. -# -PARSE_AND_LIST_PROLOGUE=' -#define OPTION_MULTI_SUBSPACE 301 -#define OPTION_STUBGROUP_SIZE (OPTION_MULTI_SUBSPACE + 1) -' - -# The options are repeated below so that no abbreviations are allowed. -# Otherwise -s matches stub-group-size -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 }, - { "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" - )); - fprintf (file, _("\ - --stub-group-size=N Maximum size of a group of input sections that can be\n\ - handled by one stub section. A negative value\n\ - locates all stubs before their branches (with a\n\ - group size of -N), while a positive value allows\n\ - two groups of input sections, one before, and one\n\ - after each stub section. Values of +/-1 indicate\n\ - the linker should choose suitable defaults.\n" - )); -' - -PARSE_AND_LIST_ARGS_CASES=' - 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 (_("%P%F: invalid number `%s'\''\n"), optarg); - } - break; -' - -# Put these extra hppaelf routines in ld_${EMULATION_NAME}_emulation -# -LDEMUL_AFTER_PARSE=hppaelf_after_parse -LDEMUL_FINISH=gld${EMULATION_NAME}_finish -LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=hppaelf_create_output_section_statements |