X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Femultempl%2Farmelf.em;h=6074824f72d6f607449000702e7c5945bfe412ef;hb=de341542a60f7d3a80cc339db7d341b615cfa52f;hp=c66d43f6828a15fa082e5cf3e4adea96d44ed9de;hpb=6a345e871d07199f9c4bb9009e20e9dabbf5d4f2;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/emultempl/armelf.em b/ld/emultempl/armelf.em index c66d43f682..6074824f72 100644 --- a/ld/emultempl/armelf.em +++ b/ld/emultempl/armelf.em @@ -1,1312 +1,765 @@ # This shell script emits a C file. -*- C -*- -# It does some substitutions. -ELFSIZE=32 -cat >e${EMULATION_NAME}.c < - -#include "bfdlink.h" -#include "getopt.h" - -#include "ld.h" -#include "ldmain.h" -#include "ldemul.h" -#include "ldfile.h" -#include "ldmisc.h" - -#include "ldexp.h" -#include "ldlang.h" -#include "ldgram.h" - -static boolean gld${EMULATION_NAME}_open_dynamic_archive - PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *)); -static void gld${EMULATION_NAME}_after_open PARAMS ((void)); -static void gld${EMULATION_NAME}_check_needed - PARAMS ((lang_input_statement_type *)); -static void gld${EMULATION_NAME}_stat_needed - PARAMS ((lang_input_statement_type *)); -static boolean gld${EMULATION_NAME}_search_needed - PARAMS ((const char *, const char *, int)); -static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int)); -static void gld${EMULATION_NAME}_vercheck - PARAMS ((lang_input_statement_type *)); -static void gld${EMULATION_NAME}_find_statement_assignment - PARAMS ((lang_statement_union_type *)); -static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); -static boolean gld${EMULATION_NAME}_place_orphan - PARAMS ((lang_input_statement_type *, asection *)); -static void gld${EMULATION_NAME}_place_section - PARAMS ((lang_statement_union_type *)); -static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); -static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); -static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); -static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **)); -static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *)); -static void gld${EMULATION_NAME}_finish PARAMS ((void)); - - -static int no_pipeline_knowledge = 0; -static char * thumb_entry_symbol = NULL; - -#define OPTION_THUMB_ENTRY 301 +# Copyright (C) 1991-2016 Free Software Foundation, Inc. +# +# 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 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 arm-elf +# specific routines. +# +test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel" +fragment < Set the entry point to be Thumb symbol \n")); -} - -static int -gld${EMULATION_NAME}_parse_args (argc, argv) - int argc; - char ** argv; +gld${EMULATION_NAME}_before_parse (void) { - int longind; - int optc; - int prevoptind = optind; - int prevopterr = opterr; - int wanterror; - static int lastoptind = -1; - - if (lastoptind != optind) - opterr = 0; - - wanterror = opterr; - lastoptind = optind; - - optc = getopt_long_only (argc, argv, "-p", longopts, & longind); - opterr = prevopterr; - - switch (optc) - { - default: - if (wanterror) - xexit (1); - optind = prevoptind; - return 0; - - case 'p': - no_pipeline_knowledge = 1; - break; - - case OPTION_THUMB_ENTRY: - thumb_entry_symbol = optarg; - break; - } - - return 1; +#ifndef TARGET_ /* I.e., if not generic. */ + ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); +#endif /* not TARGET_ */ + input_flags.dynamic = ${DYNAMIC_LINK-TRUE}; + config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; + config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`; } - static void -gld${EMULATION_NAME}_before_parse () +gld${EMULATION_NAME}_set_symbols (void) { -#ifndef TARGET_ /* I.e., if not generic. */ - ldfile_set_output_arch ("`echo ${ARCH}`"); -#endif /* not TARGET_ */ - config.dynamic_link = ${DYNAMIC_LINK-true}; - config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`; + /* PR 19106: The section resizing code in gldarmelf_after_allocation + is effectively the same as relaxation, so prevent early memory + region checks which produce bogus error messages. + Note - this test has nothing to do with symbols. It is just here + because this is the first emulation routine that is called after + the command line has been parsed. */ + if (!bfd_link_relocatable (&link_info)) + TARGET_ENABLE_RELAXATION; } -/* Try to open a dynamic archive. This is where we know that ELF - dynamic libraries have an extension of .so. */ - -static boolean -gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) - const char *arch; - search_dirs_type *search; - lang_input_statement_type *entry; +static void +arm_elf_before_allocation (void) { - const char *filename; - char *string; - - if (! entry->is_archive) - return false; - - filename = entry->filename; + bfd_elf32_arm_set_byteswap_code (&link_info, byteswap_code); - string = (char *) xmalloc (strlen (search->name) - + strlen (filename) - + strlen (arch) - + sizeof "/lib.so"); + /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary + due to architecture version. */ + bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); - sprintf (string, "%s/lib%s%s.so", search->name, filename, arch); - - if (! ldfile_try_open_bfd (string, entry)) - { - free (string); - return false; - } - - entry->filename = string; - - /* We have found a dynamic object to include in the link. The ELF - backend linker will create a DT_NEEDED entry in the .dynamic - section naming this file. If this file includes a DT_SONAME - entry, it will be used. Otherwise, the ELF linker will just use - the name of the file. For an archive found by searching, like - this one, the DT_NEEDED entry should consist of just the name of - the file, without the path information used to find it. Note - that we only need to do this if we have a dynamic object; an - archive will never be referenced by a DT_NEEDED entry. - - FIXME: This approach--using bfd_elf_set_dt_needed_name--is not - very pretty. I haven't been able to think of anything that is - pretty, though. */ - if (bfd_check_format (entry->the_bfd, bfd_object) - && (entry->the_bfd->flags & DYNAMIC) != 0) - { - char *needed_name; - - ASSERT (entry->is_archive && entry->search_dirs_flag); - needed_name = (char *) xmalloc (strlen (filename) - + strlen (arch) - + sizeof "lib.so"); - sprintf (needed_name, "lib%s%s.so", filename, arch); - bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name); - } + /* Choose type of STM32L4XX erratum fix, or warn if specified fix is + unnecessary due to architecture version. */ + bfd_elf32_arm_set_stm32l4xx_fix (link_info.output_bfd, &link_info); - return true; -} + /* Auto-select Cortex-A8 erratum fix if it wasn't explicitly specified. */ + bfd_elf32_arm_set_cortex_a8_fix (link_info.output_bfd, &link_info); -EOF -if [ "x${host}" = "x${target}" ] ; then - case " ${EMULATION_LIBPATH} " in - *" ${EMULATION_NAME} "*) -cat >>e${EMULATION_NAME}.c <dynobj == NULL) { - FILE *f; - - f = fopen ("/etc/ld.so.conf", FOPEN_RT); - if (f != NULL) + /* Here we rummage through the found bfds to collect glue information. */ + LANG_FOR_EACH_INPUT_STATEMENT (is) { - char *b; - size_t len, alloc; - int c; - - len = 0; - alloc = 100; - b = (char *) xmalloc (alloc); - - while ((c = getc (f)) != EOF) - { - if (len + 1 >= alloc) - { - alloc *= 2; - b = (char *) xrealloc (b, alloc); - } - if (c != ':' - && c != ' ' - && c != '\t' - && c != '\n' - && c != ',') - { - b[len] = c; - ++len; - } - else - { - if (len > 0 && b[len - 1] != ':') - { - b[len] = ':'; - ++len; - } - } - } - - if (len > 0 && b[len - 1] == ':') - --len; - - if (len > 0) - b[len] = '\0'; - else - { - free (b); - b = NULL; - } - - fclose (f); - - ld_so_conf = b; + /* Initialise mapping tables for code/data. */ + bfd_elf32_arm_init_maps (is->the_bfd); + + if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, + &link_info) + || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info) + || !bfd_elf32_arm_stm32l4xx_erratum_scan (is->the_bfd, + &link_info)) + /* xgettext:c-format */ + einfo (_("Errors encountered processing file %s"), is->filename); } - initialized = true; + /* We have seen it all. Allocate it, and carry on. */ + bfd_elf32_arm_allocate_interworking_sections (& link_info); } - if (ld_so_conf == NULL) - return false; - - return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force); + /* Call the standard elf routine. */ + gld${EMULATION_NAME}_before_allocation (); } -EOF - ;; - esac -fi -cat >>e${EMULATION_NAME}.c <next) - bfd_elf32_arm_get_bfd_for_interworking (is->the_bfd, & link_info); - } - } +static bfd_boolean +hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) +{ + lang_statement_union_type *l; + bfd_boolean ret; - /* We only need to worry about this when doing a final link. */ - if (link_info.relocateable || link_info.shared) - return; - - /* Get the list of files which appear in DT_NEEDED entries in - dynamic objects included in the link (often there will be none). - For each such file, we want to track down the corresponding - library, and include the symbol table in the link. This is what - the runtime dynamic linker will do. Tracking the files down here - permits one dynamic object to include another without requiring - special action by the person doing the link. Note that the - needed list can actually grow while we are stepping through this - loop. */ - needed = bfd_elf_get_needed_list (output_bfd, &link_info); - for (l = needed; l != NULL; l = l->next) + for (; (l = *lp) != NULL; lp = &l->header.next) { - struct bfd_link_needed_list *ll; - int force; + switch (l->header.type) + { + case lang_constructors_statement_enum: + ret = hook_in_stub (info, &constructor_list.head); + if (ret) + return ret; + break; - /* If we've already seen this file, skip it. */ - for (ll = needed; ll != l; ll = ll->next) - if (strcmp (ll->name, l->name) == 0) + case lang_output_section_statement_enum: + ret = hook_in_stub (info, + &l->output_section_statement.children.head); + if (ret) + return ret; break; - if (ll != l) - continue; - /* See if this file was included in the link explicitly. */ - global_needed = l; - global_found = false; - lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); - if (global_found) - continue; + case lang_wild_statement_enum: + ret = hook_in_stub (info, &l->wild_statement.children.head); + if (ret) + return ret; + break; - /* We need to find this file and include the symbol table. We - want to search for the file in the same way that the dynamic - linker will search. That means that we want to use - rpath_link, rpath, then the environment variable - LD_LIBRARY_PATH (native only), then the linker script - LIB_SEARCH_DIRS. We do not search using the -L arguments. - - We search twice. The first time, we skip objects which may - introduce version mismatches. The second time, we force - their use. See gld${EMULATION_NAME}_vercheck comment. */ - for (force = 0; force < 2; force++) - { - const char *lib_path; - size_t len; - search_dirs_type *search; - - if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, - l->name, force)) - break; - if (gld${EMULATION_NAME}_search_needed (command_line.rpath, - l->name, force)) - break; - if (command_line.rpath_link == NULL - && command_line.rpath == NULL) - { - lib_path = (const char *) getenv ("LD_RUN_PATH"); - if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, - force)) - break; - } -EOF -if [ "x${host}" = "x${target}" ] ; then - case " ${EMULATION_LIBPATH} " in - *" ${EMULATION_NAME} "*) -cat >>e${EMULATION_NAME}.c <name, force)) - break; -EOF - ;; - esac -fi -cat >>e${EMULATION_NAME}.c <name); - for (search = search_head; search != NULL; search = search->next) + case lang_group_statement_enum: + ret = hook_in_stub (info, &l->group_statement.children.head); + if (ret) + return ret; + break; + + case lang_input_section_enum: + if (l->input_section.section == info->input_section) { - char *filename; - - if (search->cmdline) - continue; - filename = (char *) xmalloc (strlen (search->name) + len + 2); - sprintf (filename, "%s/%s", search->name, l->name); - if (gld${EMULATION_NAME}_try_needed (filename, force)) - break; - free (filename); + /* 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; } - if (search != NULL) - break; -EOF -if [ "x${host}" = "x${target}" ] ; then - case " ${EMULATION_LIBPATH} " in - *" ${EMULATION_NAME} "*) -cat >>e${EMULATION_NAME}.c <name, force)) - break; -EOF - ;; - esac -fi -cat >>e${EMULATION_NAME}.c <name, l->by); + default: + FAIL (); + break; + } } + return FALSE; } -/* Search for a needed file in a path. */ -static boolean -gld${EMULATION_NAME}_search_needed (path, name, force) - const char *path; - const char *name; - int force; -{ - const char *s; - size_t len; +/* Call-back for elf32_arm_size_stubs. */ - if (path == NULL || *path == '\0') - return false; - len = strlen (name); - while (1) - { - char *filename, *sset; +/* Create a new stub section, and arrange for it to be linked + immediately after INPUT_SECTION. */ - s = strchr (path, ':'); - if (s == NULL) - s = path + strlen (path); +static asection * +elf32_arm_add_stub_section (const char * stub_sec_name, + asection * output_section, + asection * after_input_section, + unsigned int alignment_power) +{ + asection *stub_sec; + flagword flags; + lang_output_section_statement_type *os; + struct hook_stub_info info; - filename = (char *) xmalloc (s - path + len + 2); - if (s == path) - sset = filename; - else - { - memcpy (filename, path, s - path); - filename[s - path] = '/'; - sset = filename + (s - path) + 1; - } - strcpy (sset, name); + 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; - if (gld${EMULATION_NAME}_try_needed (filename, force)) - return true; + bfd_set_section_alignment (stub_file->the_bfd, stub_sec, alignment_power); - free (filename); + os = lang_output_section_get (output_section); - if (*s == '\0') - break; - path = s + 1; - } + info.input_section = after_input_section; + lang_list_init (&info.add); + lang_add_section (&info.add, stub_sec, NULL, os); - return false; -} + if (info.add.head == NULL) + goto err_ret; -/* This function is called for each possible name for a dynamic object - named by a DT_NEEDED entry. The FORCE parameter indicates whether - to skip the check for a conflicting version. */ + if (after_input_section == NULL) + { + lang_statement_union_type **lp = &os->children.head; + lang_statement_union_type *l, *lprev = NULL; -static boolean -gld${EMULATION_NAME}_try_needed (name, force) - const char *name; - int force; -{ - bfd *abfd; + for (; (l = *lp) != NULL; lp = &l->header.next, lprev = l); - abfd = bfd_openr (name, bfd_get_target (output_bfd)); - if (abfd == NULL) - return false; - if (! bfd_check_format (abfd, bfd_object)) - { - (void) bfd_close (abfd); - return false; + if (lprev) + lprev->header.next = info.add.head; + else + os->children.head = info.add.head; + + return stub_sec; } - if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) + else { - (void) bfd_close (abfd); - return false; + if (hook_in_stub (&info, &os->children.head)) + return stub_sec; } - /* Check whether this object would include any conflicting library - versions. If FORCE is set, then we skip this check; we use this - the second time around, if we couldn't find any compatible - instance of the shared library. */ - - if (! force) - { - struct bfd_link_needed_list *needed; - - if (! bfd_elf_get_bfd_needed_list (abfd, &needed)) - einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd); + err_ret: + einfo ("%X%P: can not make stub section: %E\n"); + return NULL; +} - if (needed != NULL) - { - global_vercheck_needed = needed; - global_vercheck_failed = false; - lang_for_each_input_file (gld${EMULATION_NAME}_vercheck); - if (global_vercheck_failed) - { - (void) bfd_close (abfd); - /* Return false to force the caller to move on to try - another file on the search path. */ - return false; - } +/* Another call-back for elf_arm_size_stubs. */ - /* But wait! It gets much worse. On Linux, if a shared - library does not use libc at all, we are supposed to skip - it the first time around in case we encounter a shared - library later on with the same name which does use the - version of libc that we want. This is much too horrible - to use on any system other than Linux. */ +static void +gldarm_layout_sections_again (void) +{ + /* If we have changed sizes of the stub sections, then we need + to recalculate all the section offsets. This may mean we need to + add even more stubs. */ + gld${EMULATION_NAME}_map_segments (TRUE); + need_laying_out = -1; +} -EOF -case ${target} in - *-*-linux-gnu*) - cat >>e${EMULATION_NAME}.c <next) - if (strncmp (l->name, "libc.so", 7) == 0) - break; - if (l == NULL) - { - (void) bfd_close (abfd); - return false; - } - } +static void +build_section_lists (lang_statement_union_type *statement) +{ + if (statement->header.type == lang_input_section_enum) + { + asection *i = statement->input_section.section; -EOF - ;; -esac -cat >>e${EMULATION_NAME}.c <sec_info_type != SEC_INFO_TYPE_JUST_SYMS + && (i->flags & SEC_EXCLUDE) == 0 + && i->output_section != NULL + && i->output_section->owner == link_info.output_bfd) + elf32_arm_next_input_section (& link_info, i); } +} - /* We've found a dynamic object matching the DT_NEEDED entry. */ - - /* We have already checked that there is no other input file of the - same name. We must now check again that we are not including the - same file twice. We need to do this because on many systems - libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will - reference libc.so.1. If we have already included libc.so, we - don't want to include libc.so.1 if they are the same file, and we - can only check that using stat. */ - - if (bfd_stat (abfd, &global_stat) != 0) - einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd); - global_found = false; - lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed); - if (global_found) - { - /* Return true to indicate that we found the file, even though - we aren't going to do anything with it. */ - return true; - } +static int +compare_output_sec_vma (const void *a, const void *b) +{ + asection *asec = *(asection **) a, *bsec = *(asection **) b; + asection *aout = asec->output_section, *bout = bsec->output_section; + bfd_vma avma, bvma; - /* Tell the ELF backend that don't want the output file to have a - DT_NEEDED entry for this file. */ - bfd_elf_set_dt_needed_name (abfd, ""); + /* If there's no output section for some reason, compare equal. */ + if (!aout || !bout) + return 0; - /* Add this file into the symbol table. */ - if (! bfd_link_add_symbols (abfd, &link_info)) - einfo ("%F%B: could not read symbols: %E\n", abfd); + avma = aout->vma + asec->output_offset; + bvma = bout->vma + bsec->output_offset; - return true; -} + if (avma > bvma) + return 1; + else if (avma < bvma) + return -1; -/* See if an input file matches a DT_NEEDED entry by name. */ + return 0; +} static void -gld${EMULATION_NAME}_check_needed (s) - lang_input_statement_type *s; +gld${EMULATION_NAME}_after_allocation (void) { - if (global_found) - return; + int ret; - if (s->filename != NULL - && strcmp (s->filename, global_needed->name) == 0) - { - global_found = true; - return; - } + /* Build a sorted list of input text sections, then use that to process + the unwind table index. */ + unsigned int list_size = 10; + asection **sec_list = (asection **) + xmalloc (list_size * sizeof (asection *)); + unsigned int sec_count = 0; - if (s->the_bfd != NULL) + LANG_FOR_EACH_INPUT_STATEMENT (is) { - const char *soname; + bfd *abfd = is->the_bfd; + asection *sec; - soname = bfd_elf_get_dt_soname (s->the_bfd); - if (soname != NULL - && strcmp (soname, global_needed->name) == 0) - { - global_found = true; - return; - } - } - - if (s->search_dirs_flag - && s->filename != NULL - && strchr (global_needed->name, '/') == NULL) - { - const char *f; + if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) + continue; - f = strrchr (s->filename, '/'); - if (f != NULL - && strcmp (f + 1, global_needed->name) == 0) + for (sec = abfd->sections; sec != NULL; sec = sec->next) { - global_found = true; - return; + asection *out_sec = sec->output_section; + + if (out_sec + && elf_section_data (sec) + && elf_section_type (sec) == SHT_PROGBITS + && (elf_section_flags (sec) & SHF_EXECINSTR) != 0 + && (sec->flags & SEC_EXCLUDE) == 0 + && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS + && out_sec != bfd_abs_section_ptr) + { + if (sec_count == list_size) + { + list_size *= 2; + sec_list = (asection **) + xrealloc (sec_list, list_size * sizeof (asection *)); + } + + sec_list[sec_count++] = sec; + } } } -} -/* See if an input file matches a DT_NEEDED entry by running stat on - the file. */ - -static void -gld${EMULATION_NAME}_stat_needed (s) - lang_input_statement_type *s; -{ - struct stat st; - const char *suffix; - const char *soname; - const char *f; + qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma); - if (global_found) - return; - if (s->the_bfd == NULL) - return; + if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info, + merge_exidx_entries)) + need_laying_out = 1; - if (bfd_stat (s->the_bfd, &st) != 0) - { - einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd); - return; - } + free (sec_list); - if (st.st_dev == global_stat.st_dev - && st.st_ino == global_stat.st_ino) + /* 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. */ + ret = bfd_elf_discard_info (link_info.output_bfd, & link_info); + if (ret < 0) { - global_found = true; + einfo ("%X%P: .eh_frame/.stab edit: %E\n"); return; } + else if (ret > 0) + need_laying_out = 1; - /* We issue a warning if it looks like we are including two - different versions of the same shared library. For example, - there may be a problem if -lc picks up libc.so.6 but some other - shared library has a DT_NEEDED entry of libc.so.5. This is a - hueristic test, and it will only work if the name looks like - NAME.so.VERSION. FIXME: Depending on file names is error-prone. - If we really want to issue warnings about mixing version numbers - of shared libraries, we need to find a better way. */ - - if (strchr (global_needed->name, '/') != NULL) - return; - suffix = strstr (global_needed->name, ".so."); - if (suffix == NULL) - return; - suffix += sizeof ".so." - 1; - - soname = bfd_elf_get_dt_soname (s->the_bfd); - if (soname == NULL) - soname = s->filename; - - f = strrchr (soname, '/'); - if (f != NULL) - ++f; - else - f = soname; - - if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0) - einfo ("%P: warning: %s, needed by %B, may conflict with %s\n", - global_needed->name, global_needed->by, f); -} - -/* On Linux, it's possible to have different versions of the same - shared library linked against different versions of libc. The - dynamic linker somehow tags which libc version to use in - /etc/ld.so.cache, and, based on the libc that it sees in the - executable, chooses which version of the shared library to use. - - We try to do a similar check here by checking whether this shared - library needs any other shared libraries which may conflict with - libraries we have already included in the link. If it does, we - skip it, and try to find another shared library farther on down the - link path. - - This is called via lang_for_each_input_file. - GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object - which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find - a conflicting version. */ - -static void -gld${EMULATION_NAME}_vercheck (s) - lang_input_statement_type *s; -{ - const char *soname, *f; - struct bfd_link_needed_list *l; - - if (global_vercheck_failed) - return; - if (s->the_bfd == NULL - || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0) - return; - - soname = bfd_elf_get_dt_soname (s->the_bfd); - if (soname == NULL) - soname = bfd_get_filename (s->the_bfd); - - f = strrchr (soname, '/'); - if (f != NULL) - ++f; - else - f = soname; - - for (l = global_vercheck_needed; l != NULL; l = l->next) + /* If generating a relocatable output file, then we don't + have to examine the relocs. */ + if (stub_file != NULL && !bfd_link_relocatable (&link_info)) { - const char *suffix; - - if (strcmp (f, l->name) == 0) + ret = elf32_arm_setup_section_lists (link_info.output_bfd, &link_info); + if (ret != 0) { - /* Probably can't happen, but it's an easy check. */ - continue; - } - - if (strchr (l->name, '/') != NULL) - continue; - - suffix = strstr (l->name, ".so."); - if (suffix == NULL) - continue; + if (ret < 0) + { + einfo ("%X%P: could not compute sections lists for stub generation: %E\n"); + return; + } - suffix += sizeof ".so." - 1; + lang_for_each_statement (build_section_lists); - if (strncmp (f, l->name, suffix - l->name) == 0) - { - /* Here we know that S is a dynamic object FOO.SO.VER1, and - the object we are considering needs a dynamic object - FOO.SO.VER2, and VER1 and VER2 are different. This - appears to be a version mismatch, so we tell the caller - to try a different version of this library. */ - global_vercheck_failed = true; - return; + /* Call into the BFD backend to do the real work. */ + if (! elf32_arm_size_stubs (link_info.output_bfd, + stub_file->the_bfd, + & link_info, + group_size, + & elf32_arm_add_stub_section, + & gldarm_layout_sections_again)) + { + einfo ("%X%P: cannot size stub section: %E\n"); + return; + } } } -} - -/* Place an orphan section. We use this to put random SHF_ALLOC - sections in the right segment. */ -static asection *hold_section; -static lang_output_section_statement_type *hold_use; + if (need_laying_out != -1) + gld${EMULATION_NAME}_map_segments (need_laying_out); +} -struct orphan_save -{ - lang_output_section_statement_type *os; - lang_statement_union_type **stmt; -}; -static struct orphan_save hold_text; -static struct orphan_save hold_rodata; -static struct orphan_save hold_data; -static struct orphan_save hold_bss; -static struct orphan_save hold_rel; -static struct orphan_save hold_interp; - -/*ARGSUSED*/ -static boolean -gld${EMULATION_NAME}_place_orphan (file, s) - lang_input_statement_type *file; - asection *s; +static void +gld${EMULATION_NAME}_finish (void) { - struct orphan_save *place; - asection *snew, **pps; - lang_statement_list_type *old; - lang_statement_list_type add; - etree_type *address; - const char *secname, *ps; - const char *outsecname; - lang_output_section_statement_type *os; + struct bfd_link_hash_entry * h; - if ((s->flags & SEC_ALLOC) == 0) - return false; + { + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + /* Figure out where VFP11 erratum veneers (and the labels returning + from same) have been placed. */ + bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); - /* Look through the script to see where to place this section. */ - hold_section = s; - hold_use = NULL; - lang_for_each_statement (gld${EMULATION_NAME}_place_section); + /* Figure out where STM32L4XX erratum veneers (and the labels returning + from them) have been placed. */ + bfd_elf32_arm_stm32l4xx_fix_veneer_locations (is->the_bfd, &link_info); + } + } - if (hold_use != NULL) + if (!bfd_link_relocatable (&link_info)) { - /* We have already placed a section with this name. */ - wild_doit (&hold_use->children, s, hold_use, file); - return true; + /* Now build the linker stubs. */ + if (stub_file->the_bfd->sections != NULL) + { + if (! elf32_arm_build_stubs (& link_info)) + einfo ("%X%P: can not build stubs: %E\n"); + } } - secname = bfd_get_section_name (s->owner, s); + finish_default (); - /* If this is a final link, then always put .gnu.warning.SYMBOL - sections into the .text section to get them out of the way. */ - if (! link_info.shared - && ! link_info.relocateable - && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0 - && hold_text.os != NULL) + if (thumb_entry_symbol) { - wild_doit (&hold_text.os->children, s, hold_text.os, file); - return true; + h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, + FALSE, FALSE, TRUE); } - - /* Decide which segment the section should go in based on the - section name and section flags. We put loadable .note sections - right after the .interp section, so that the PT_NOTE segment is - stored right after the program headers where the OS can read it - in the first page. */ - if (s->flags & SEC_EXCLUDE) - return false; - else if ((s->flags & SEC_LOAD) != 0 - && strncmp (secname, ".note", 4) == 0 - && hold_interp.os != NULL) - place = &hold_interp; - else if ((s->flags & SEC_HAS_CONTENTS) == 0 - && hold_bss.os != NULL) - place = &hold_bss; - else if ((s->flags & SEC_READONLY) == 0 - && hold_data.os != NULL) - place = &hold_data; - else if (strncmp (secname, ".rel", 4) == 0 - && hold_rel.os != NULL) - place = &hold_rel; - else if ((s->flags & SEC_CODE) == 0 - && (s->flags & SEC_READONLY) != 0 - && hold_rodata.os != NULL) - place = &hold_rodata; - else if ((s->flags & SEC_READONLY) != 0 - && hold_text.os != NULL) - place = &hold_text; else - return false; - - /* Choose a unique name for the section. This will be needed if the - same section name appears in the input file with different - loadable or allocateable characteristics. */ - outsecname = secname; - if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) { - unsigned int len; - char *newname; - unsigned int i; - - len = strlen (outsecname); - newname = xmalloc (len + 5); - strcpy (newname, outsecname); - i = 0; - do - { - sprintf (newname + len, "%d", i); - ++i; - } - while (bfd_get_section_by_name (output_bfd, newname) != NULL); + struct elf_link_hash_entry * eh; - outsecname = newname; - } + if (!entry_symbol.name) + return; - /* Create the section in the output file, and put it in the right - place. This shuffling is to make the output file look neater. */ - snew = bfd_make_section (output_bfd, outsecname); - if (snew == NULL) - einfo ("%P%F: output format %s cannot represent section called %s\n", - output_bfd->xvec->name, outsecname); - if (place->os->bfd_section != NULL) - { - /* Unlink it first. */ - for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) - ; - *pps = snew->next; - snew->next = NULL; - /* Now tack it on to the end of the "place->os" section list. */ - for (pps = &place->os->bfd_section; *pps; pps = &(*pps)->next) - ; - *pps = snew; + h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, + FALSE, FALSE, TRUE); + eh = (struct elf_link_hash_entry *)h; + if (!h || ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) + != ST_BRANCH_TO_THUMB) + return; } - /* Start building a list of statements for this section. */ - old = stat_ptr; - stat_ptr = &add; - lang_list_init (stat_ptr); - /* If the name of the section is representable in C, then create - symbols to mark the start and the end of the section. */ - for (ps = outsecname; *ps != '\0'; ps++) - if (! isalnum ((unsigned char) *ps) && *ps != '_') - break; - if (*ps == '\0' && config.build_constructors) + if (h != (struct bfd_link_hash_entry *) NULL + && (h->type == bfd_link_hash_defined + || h->type == bfd_link_hash_defweak) + && h->u.def.section->output_section != NULL) { - char *symname; - - symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); - sprintf (symname, "__start_%s", outsecname); - lang_add_assignment (exp_assop ('=', symname, - exp_unop (ALIGN_K, - exp_intop ((bfd_vma) 1 - << s->alignment_power)))); - } - - if (! link_info.relocateable) - address = NULL; - else - address = exp_intop ((bfd_vma) 0); + static char buffer[32]; + bfd_vma val; - lang_enter_output_section_statement (outsecname, address, 0, - (bfd_vma) 0, - (etree_type *) NULL, - (etree_type *) NULL, - (etree_type *) NULL); + /* Special procesing is required for a Thumb entry symbol. The + bottom bit of its address must be set. */ + val = (h->u.def.value + + bfd_get_section_vma (link_info.output_bfd, + h->u.def.section->output_section) + + h->u.def.section->output_offset); - os = lang_output_section_statement_lookup (outsecname); - wild_doit (&os->children, s, os, file); + val |= 1; - lang_leave_output_section_statement - ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL, - "*default*"); - stat_ptr = &add; + /* Now convert this value into a string and store it in entry_symbol + where the lang_finish() function will pick it up. */ + buffer[0] = '0'; + buffer[1] = 'x'; - if (*ps == '\0' && config.build_constructors) - { - char *symname; + sprintf_vma (buffer + 2, val); - symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); - sprintf (symname, "__stop_%s", outsecname); - lang_add_assignment (exp_assop ('=', symname, - exp_nameop (NAME, "."))); + if (thumb_entry_symbol != NULL && entry_symbol.name != NULL + && entry_from_cmdline) + einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), + thumb_entry_symbol, entry_symbol.name); + entry_symbol.name = buffer; } + else + einfo (_("%P: warning: cannot find thumb start symbol %s\n"), + thumb_entry_symbol); +} - if (! place->stmt) +/* 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 +arm_elf_create_output_section_statements (void) +{ + if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) { - /* Put the new statement list right at the head. */ - *add.tail = place->os->header.next; - place->os->header.next = add.head; + /* The arm backend needs special fields in the output hash structure. + These will only be created if the output format is an arm format, + hence we do not support linking and changing output formats at the + same time. Use a link followed by objcopy to change output formats. */ + einfo ("%F%X%P: error: Cannot change output format whilst linking ARM binaries.\n"); + return; } - else + + bfd_elf32_arm_set_target_relocs (link_info.output_bfd, &link_info, + target1_is_rel, + target2_type, fix_v4bx, use_blx, + vfp11_denorm_fix, stm32l4xx_fix, + no_enum_size_warning, + no_wchar_size_warning, + pic_veneer, fix_cortex_a8, + fix_arm1176); + + 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))) { - /* Put it after the last orphan statement we added. */ - *add.tail = *place->stmt; - *place->stmt = add.head; + einfo ("%X%P: can not create BFD %E\n"); + return; } - place->stmt = add.tail; /* Save the end of this list. */ - stat_ptr = old; + stub_file->the_bfd->flags |= BFD_LINKER_CREATED; + ldlang_add_file (stub_file); - return true; + /* Also use the stub file for stubs placed in a single output section. */ + bfd_elf32_arm_add_glue_sections_to_bfd (stub_file->the_bfd, &link_info); + bfd_elf32_arm_get_bfd_for_interworking (stub_file->the_bfd, &link_info); } -static void -gld${EMULATION_NAME}_place_section (s) - lang_statement_union_type *s; -{ - lang_output_section_statement_type *os; +/* Avoid processing the fake stub_file in vercheck, stat_needed and + check_needed routines. */ - if (s->header.type != lang_output_section_statement_enum) - return; - - os = &s->output_section_statement; - - if (strcmp (os->name, hold_section->name) == 0 - && os->bfd_section != NULL - && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC)) - == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC)))) - hold_use = os; - - if (strcmp (os->name, ".text") == 0) - hold_text.os = os; - else if (strcmp (os->name, ".rodata") == 0) - hold_rodata.os = os; - else if (strcmp (os->name, ".data") == 0) - hold_data.os = os; - else if (strcmp (os->name, ".bss") == 0) - hold_bss.os = os; - else if (hold_rel.os == NULL - && os->bfd_section != NULL - && (os->bfd_section->flags & SEC_ALLOC) != 0 - && strncmp (os->name, ".rel", 4) == 0) - hold_rel.os = os; - else if (strcmp (os->name, ".interp") == 0) - hold_interp.os = os; -} +static void (*real_func) (lang_input_statement_type *); -/* Look through an expression for an assignment statement. */ +static void arm_for_each_input_file_wrapper (lang_input_statement_type *l) +{ + if (l != stub_file) + (*real_func) (l); +} static void -gld${EMULATION_NAME}_find_exp_assignment (exp) - etree_type *exp; +arm_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) { - struct bfd_link_hash_entry *h; + real_func = func; + lang_for_each_input_file (&arm_for_each_input_file_wrapper); +} - switch (exp->type.node_class) - { - case etree_provide: - h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, - false, false, false); - if (h == NULL) - break; - - /* We call record_link_assignment even if the symbol is defined. - This is because if it is defined by a dynamic object, we - actually want to use the value defined by the linker script, - not the value from the dynamic object (because we are setting - symbols like etext). If the symbol is defined by a regular - object, then, as it happens, calling record_link_assignment - will do no harm. */ - - /* Fall through. */ - case etree_assign: - if (strcmp (exp->assign.dst, ".") != 0) - { - if (! (bfd_elf${ELFSIZE}_record_link_assignment - (output_bfd, &link_info, exp->assign.dst, - exp->type.node_class == etree_provide ? true : false))) - einfo ("%P%F: failed to record assignment to %s: %E\n", - exp->assign.dst); - } - gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); - break; +#define lang_for_each_input_file arm_lang_for_each_input_file - case etree_binary: - gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); - gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); - break; +EOF - case etree_trinary: - gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); - gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); - gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); +# 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_THUMB_ENTRY 301 +#define OPTION_BE8 302 +#define OPTION_TARGET1_REL 303 +#define OPTION_TARGET1_ABS 304 +#define OPTION_TARGET2 305 +#define OPTION_FIX_V4BX 306 +#define OPTION_USE_BLX 307 +#define OPTION_VFP11_DENORM_FIX 308 +#define OPTION_NO_ENUM_SIZE_WARNING 309 +#define OPTION_PIC_VENEER 310 +#define OPTION_FIX_V4BX_INTERWORKING 311 +#define OPTION_STUBGROUP_SIZE 312 +#define OPTION_NO_WCHAR_SIZE_WARNING 313 +#define OPTION_FIX_CORTEX_A8 314 +#define OPTION_NO_FIX_CORTEX_A8 315 +#define OPTION_NO_MERGE_EXIDX_ENTRIES 316 +#define OPTION_FIX_ARM1176 317 +#define OPTION_NO_FIX_ARM1176 318 +#define OPTION_LONG_PLT 319 +#define OPTION_STM32L4XX_FIX 320 +' + +PARSE_AND_LIST_SHORTOPTS=p + +PARSE_AND_LIST_LONGOPTS=' + { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, + { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, + { "be8", no_argument, NULL, OPTION_BE8}, + { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, + { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, + { "target2", required_argument, NULL, OPTION_TARGET2}, + { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, + { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, + { "use-blx", no_argument, NULL, OPTION_USE_BLX}, + { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, + { "fix-stm32l4xx-629360", optional_argument, NULL, OPTION_STM32L4XX_FIX}, + { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, + { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, + { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, + { "no-wchar-size-warning", no_argument, NULL, OPTION_NO_WCHAR_SIZE_WARNING}, + { "fix-cortex-a8", no_argument, NULL, OPTION_FIX_CORTEX_A8 }, + { "no-fix-cortex-a8", no_argument, NULL, OPTION_NO_FIX_CORTEX_A8 }, + { "no-merge-exidx-entries", no_argument, NULL, OPTION_NO_MERGE_EXIDX_ENTRIES }, + { "fix-arm1176", no_argument, NULL, OPTION_FIX_ARM1176 }, + { "no-fix-arm1176", no_argument, NULL, OPTION_NO_FIX_ARM1176 }, + { "long-plt", no_argument, NULL, OPTION_LONG_PLT }, +' + +PARSE_AND_LIST_OPTIONS=' + fprintf (file, _(" --thumb-entry= Set the entry point to be Thumb symbol \n")); + fprintf (file, _(" --be8 Output BE8 format image\n")); + fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); + fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); + fprintf (file, _(" --target2= Specify definition of R_ARM_TARGET2\n")); + fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); + fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); + fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); + fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); + fprintf (file, _(" --fix-stm32l4xx-629360 Specify how to fix STM32L4XX 629360 erratum\n")); + fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible\n" + " enum sizes\n")); + fprintf (file, _(" --no-wchar-size-warning Don'\''t warn about objects with incompatible\n" + " wchar_t sizes\n")); + fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); + fprintf (file, _(" --long-plt Generate long .plt entries\n" + " to handle large .plt/.got displacements\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 after 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, _(" --[no-]fix-cortex-a8 Disable/enable Cortex-A8 Thumb-2 branch erratum fix\n")); + fprintf (file, _(" --no-merge-exidx-entries Disable merging exidx entries\n")); + fprintf (file, _(" --[no-]fix-arm1176 Disable/enable ARM1176 BLX immediate erratum fix\n")); +' + +PARSE_AND_LIST_ARGS_CASES=' + case '\'p\'': + /* Only here for backwards compatibility. */ break; - case etree_unary: - gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); + case OPTION_THUMB_ENTRY: + thumb_entry_symbol = optarg; break; - default: + case OPTION_BE8: + byteswap_code = 1; break; - } -} -/* This is called by the before_allocation routine via - lang_for_each_statement. It locates any assignment statements, and - tells the ELF backend about them, in case they are assignments to - symbols which are referred to by dynamic objects. */ + case OPTION_TARGET1_REL: + target1_is_rel = 1; + break; -static void -gld${EMULATION_NAME}_find_statement_assignment (s) - lang_statement_union_type *s; -{ - if (s->header.type == lang_assignment_statement_enum) - gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); -} + case OPTION_TARGET1_ABS: + target1_is_rel = 0; + break; -/* This is called after the sections have been attached to output - sections, but before any sizes or addresses have been set. */ + case OPTION_TARGET2: + target2_type = optarg; + break; -static void -gld${EMULATION_NAME}_before_allocation () -{ - const char *rpath; - asection *sinterp; - - /* If we are going to make any variable assignments, we need to let - the ELF backend know about them in case the variables are - referred to by dynamic objects. */ - lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); - - /* Let the ELF backend work out the sizes of any sections required - by dynamic linking. */ - rpath = command_line.rpath; - if (rpath == NULL) - rpath = (const char *) getenv ("LD_RUN_PATH"); - if (! (bfd_elf${ELFSIZE}_size_dynamic_sections - (output_bfd, command_line.soname, rpath, - command_line.export_dynamic, command_line.filter_shlib, - (const char * const *) command_line.auxiliary_filters, - &link_info, &sinterp, lang_elf_version_info))) - einfo ("%P%F: failed to set dynamic section sizes: %E\n"); - - /* Let the user override the dynamic linker we are using. */ - if (command_line.interpreter != NULL - && sinterp != NULL) - { - sinterp->contents = (bfd_byte *) command_line.interpreter; - sinterp->_raw_size = strlen (command_line.interpreter) + 1; - } + case OPTION_FIX_V4BX: + fix_v4bx = 1; + break; - /* Look for any sections named .gnu.warning. As a GNU extensions, - we treat such sections as containing warning messages. We print - out the warning message, and then zero out the section size so - that it does not get copied into the output file. */ + case OPTION_FIX_V4BX_INTERWORKING: + fix_v4bx = 2; + break; - { - LANG_FOR_EACH_INPUT_STATEMENT (is) - { - asection *s; - bfd_size_type sz; - char *msg; - boolean ret; - - if (is->just_syms_flag) - continue; - - s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning"); - if (s == NULL) - continue; - - sz = bfd_section_size (is->the_bfd, s); - msg = xmalloc ((size_t) sz + 1); - if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz)) - einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n", - is->the_bfd); - msg[sz] = '\0'; - ret = link_info.callbacks->warning (&link_info, msg, - (const char *) NULL, - is->the_bfd, (asection *) NULL, - (bfd_vma) 0); - ASSERT (ret); - free (msg); - - /* Clobber the section size, so that we don't waste copying the - warning into the output file. */ - s->_raw_size = 0; - } - } + case OPTION_USE_BLX: + use_blx = 1; + break; - /* we should be able to set the size of the interworking stub section */ + case OPTION_VFP11_DENORM_FIX: + if (strcmp (optarg, "none") == 0) + vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; + else if (strcmp (optarg, "scalar") == 0) + vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; + else if (strcmp (optarg, "vector") == 0) + vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; + else + einfo (_("Unrecognized VFP11 fix type '\''%s'\''.\n"), optarg); + break; - /* Here we rummage through the found bfds to collect glue information */ - /* FIXME: should this be based on a command line option? krk@cygnus.com */ - { - LANG_FOR_EACH_INPUT_STATEMENT (is) - { - if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info, - no_pipeline_knowledge)) - { - /* xgettext:c-format */ - einfo (_("Errors encountered processing file %s"), is->filename); - } - } - } + case OPTION_STM32L4XX_FIX: + if (!optarg) + stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; + else if (strcmp (optarg, "none") == 0) + stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; + else if (strcmp (optarg, "default") == 0) + stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT; + else if (strcmp (optarg, "all") == 0) + stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL; + else + einfo (_("Unrecognized STM32L4XX fix type '\''%s'\''.\n"), optarg); + break; - /* We have seen it all. Allocate it, and carry on */ - bfd_elf32_arm_allocate_interworking_sections (& link_info); -} + case OPTION_NO_ENUM_SIZE_WARNING: + no_enum_size_warning = 1; + break; -static void -gld${EMULATION_NAME}_finish PARAMS((void)) -{ - struct bfd_link_hash_entry * h; + case OPTION_NO_WCHAR_SIZE_WARNING: + no_wchar_size_warning = 1; + break; - if (thumb_entry_symbol == NULL) - return; - - h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true); + case OPTION_PIC_VENEER: + pic_veneer = 1; + break; - if (h != (struct bfd_link_hash_entry *) NULL - && (h->type == bfd_link_hash_defined - || h->type == bfd_link_hash_defweak) - && h->u.def.section->output_section != NULL) - { - static char buffer[32]; - bfd_vma val; - - /* Special procesing is required for a Thumb entry symbol. The - bottom bit of its address must be set. */ - val = (h->u.def.value - + bfd_get_section_vma (output_bfd, - h->u.def.section->output_section) - + h->u.def.section->output_offset); - - val |= 1; + case OPTION_STUBGROUP_SIZE: + { + const char *end; - /* Now convert this value into a string and store it in entry_symbol - where the lang_finish() function will pick it up. */ - buffer[0] = '0'; - buffer[1] = 'x'; - - sprintf_vma (buffer + 2, val); + group_size = bfd_scan_vma (optarg, &end, 0); + if (*end) + einfo (_("%P%F: invalid number `%s'\''\n"), optarg); + } + break; - if (entry_symbol != NULL && entry_from_cmdline) - einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), - thumb_entry_symbol, entry_symbol); - entry_symbol = buffer; - } - else - einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); -} + case OPTION_FIX_CORTEX_A8: + fix_cortex_a8 = 1; + break; -static char * -gld${EMULATION_NAME}_get_script (isfile) - int *isfile; -EOF + case OPTION_NO_FIX_CORTEX_A8: + fix_cortex_a8 = 0; + break; -if test -n "$COMPILE_IN" -then -# Scripts compiled in. + case OPTION_NO_MERGE_EXIDX_ENTRIES: + merge_exidx_entries = 0; + break; -# sed commands to quote an ld script as a C string. -sc="-f stringify.sed" + case OPTION_FIX_ARM1176: + fix_arm1176 = 1; + break; -cat >>e${EMULATION_NAME}.c <> e${EMULATION_NAME}.c -echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c -echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c -echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c -if test -n "$GENERATE_SHLIB_SCRIPT" ; then - echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c - sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c -fi -echo ' ; else return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c -echo '; }' >> e${EMULATION_NAME}.c - -else -# Scripts read from the filesystem. - -cat >>e${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <