X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Femultempl%2Fhppaelf.em;h=695579650f5b3f0ba5f5e2a3755dcc833cd6ac00;hb=0cdcdbf8dbadc70194d46b4c3400ba8cc2a10fc0;hp=51f3bbd6249c9325ffbc5289cc526684728d888f;hpb=4900fc0695949d2c616c78553893e6cfbcac73aa;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/emultempl/hppaelf.em b/ld/emultempl/hppaelf.em index 51f3bbd624..695579650f 100644 --- a/ld/emultempl/hppaelf.em +++ b/ld/emultempl/hppaelf.em @@ -1,158 +1,95 @@ # This shell script emits a C file. -*- C -*- -# It does some substitutions. -cat >e${EMULATION_NAME}.c < -#include "bfdlink.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" +# Copyright (C) 1991-2014 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 hppa-elf +# specific routines. +# +fragment <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"); 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; - } - } -} - struct hook_stub_info { @@ -162,15 +99,13 @@ struct hook_stub_info /* Traverse the linker tree to find the spot where the stub goes. */ -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) { @@ -206,7 +141,7 @@ hook_in_stub (info, lp) before its associated input section. */ *lp = info->add.head; *(info->add.tail) = l; - return true; + return TRUE; } break; @@ -227,42 +162,37 @@ hook_in_stub (info, lp) break; } } - return false; + 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_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_IN_MEMORY | SEC_KEEP); - if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags)) + | 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); + 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; @@ -275,399 +205,179 @@ hppaelf_add_stub_section (stub_name, input_section) 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. */ - - /* 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 (); - - /* Do the assignments again. */ - lang_do_assignments (stat_ptr->head, abs_output_section, - (fill_type) 0, (bfd_vma) 0); + gld${EMULATION_NAME}_map_segments (TRUE); + need_laying_out = -1; } -/* Final emulation specific call. For the PA we use this opportunity - to build linker stubs. */ - static void -hppaelf_finish () +build_section_lists (lang_statement_union_type *statement) { - /* 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, - &link_info, - &hppaelf_add_stub_section, - &hppaelf_layaout_sections_again) == false) + if (statement->header.type == lang_input_section_enum) { - einfo ("%X%P: can not size stub section: %E\n"); - return; - } + asection *i = statement->input_section.section; - /* Now build the linker stubs. */ - if (stub_file->the_bfd->sections != NULL) - { - if (elf32_hppa_build_stubs (stub_file->the_bfd, &link_info) == false) - einfo ("%X%P: can not build stubs: %E\n"); + 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); + } } } -/* Place an orphan section. We use this to put random SHF_ALLOC - sections in the right segment. */ - -struct orphan_save -{ - lang_output_section_statement_type *os; - asection **section; - lang_statement_union_type **stmt; -}; +/* For the PA we use this opportunity to size and build linker stubs. */ -/*ARGSUSED*/ -static boolean -gld${EMULATION_NAME}_place_orphan (file, s) - lang_input_statement_type *file; - asection *s; +static void +gld${EMULATION_NAME}_after_allocation (void) { - 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; - struct orphan_save *place; - 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; - - secname = bfd_get_section_name (s->owner, s); - - /* Look through the script to see where to place this section. */ - os = lang_output_section_find (secname); - - if (os != NULL - && os->bfd_section != NULL - && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0) - { - /* We have already placed a section with this name. */ - wild_doit (&os->children, s, os, file); - return true; - } - - if (hold_text.os == NULL) - hold_text.os = lang_output_section_find (".text"); - - /* 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) + 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) { - wild_doit (&hold_text.os->children, s, hold_text.os, file); - return true; + einfo ("%X%P: .eh_frame/.stab edit: %E\n"); + return; } + else if (ret > 0) + need_laying_out = 1; - /* 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. */ -#define HAVE_SECTION(hold, name) \ -(hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL) - - if (s->flags & SEC_EXCLUDE) - return false; - else if ((s->flags & SEC_ALLOC) == 0) - place = NULL; - else if ((s->flags & SEC_LOAD) != 0 - && strncmp (secname, ".note", 4) == 0 - && HAVE_SECTION (hold_interp, ".interp")) - place = &hold_interp; - else if ((s->flags & SEC_HAS_CONTENTS) == 0 - && HAVE_SECTION (hold_bss, ".bss")) - place = &hold_bss; - else if ((s->flags & SEC_READONLY) == 0 - && HAVE_SECTION (hold_data, ".data")) - place = &hold_data; - else if (strncmp (secname, ".rel", 4) == 0 - && (hold_rel.os != NULL - || (hold_rel.os = output_rel_find ()) != NULL)) - place = &hold_rel; - else if ((s->flags & SEC_CODE) == 0 - && (s->flags & SEC_READONLY) != 0 - && HAVE_SECTION (hold_rodata, ".rodata")) - place = &hold_rodata; - else if ((s->flags & SEC_READONLY) != 0 - && hold_text.os != NULL) - place = &hold_text; - else - place = NULL; - -#undef HAVE_SECTION - - /* 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) + /* If generating a relocatable output file, then we don't + have to examine the relocs. */ + if (stub_file != NULL && !link_info.relocatable) { - unsigned int len; - char *newname; - unsigned int i; - - len = strlen (outsecname); - newname = xmalloc (len + 5); - strcpy (newname, outsecname); - i = 0; - do + ret = elf32_hppa_setup_section_lists (link_info.output_bfd, &link_info); + if (ret != 0) { - sprintf (newname + len, "%d", i); - ++i; - } - while (bfd_get_section_by_name (output_bfd, newname) != NULL); + if (ret < 0) + { + einfo ("%X%P: can not size stub section: %E\n"); + return; + } - outsecname = newname; - } + lang_for_each_statement (build_section_lists); - if (place != NULL) - { - /* 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) - { - char *symname; - etree_type *e_align; - - symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); - sprintf (symname, "__start_%s", outsecname); - e_align = exp_unop (ALIGN_K, - exp_intop ((bfd_vma) 1 << s->alignment_power)); - lang_add_assignment (exp_assop ('=', symname, e_align)); + /* 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; + } } } - if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) - address = exp_intop ((bfd_vma) 0); - else - address = NULL; - - os = lang_enter_output_section_statement (outsecname, address, 0, - (bfd_vma) 0, - (etree_type *) NULL, - (etree_type *) NULL, - (etree_type *) NULL); + if (need_laying_out != -1) + gld${EMULATION_NAME}_map_segments (need_laying_out); - wild_doit (&os->children, s, os, file); - - lang_leave_output_section_statement - ((bfd_vma) 0, "*default*", - (struct lang_output_section_phdr_list *) NULL, "*default*"); - - if (place != NULL) + if (! link_info.relocatable) { - asection *snew, **pps; - - stat_ptr = &add; - - if (*ps == '\0' && config.build_constructors) - { - char *symname; - - symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); - sprintf (symname, "__stop_%s", outsecname); - lang_add_assignment (exp_assop ('=', symname, - exp_nameop (NAME, "."))); - } - stat_ptr = old; - - snew = os->bfd_section; - if (place->os->bfd_section != NULL || place->section != NULL) + /* Set the global data pointer. */ + if (! elf32_hppa_set_gp (link_info.output_bfd, &link_info)) { - /* Shuffle the section to make the output file look neater. */ - if (place->section == NULL) - { -#if 0 - /* Finding the end of the list is a little tricky. We - make a wild stab at it by comparing section flags. */ - flagword first_flags = place->os->bfd_section->flags; - for (pps = &place->os->bfd_section->next; - *pps != NULL && (*pps)->flags == first_flags; - pps = &(*pps)->next) - ; - place->section = pps; -#else - /* Put orphans after the first section on the list. */ - place->section = &place->os->bfd_section->next; -#endif - } - - /* Unlink the section. */ - for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) - ; - *pps = snew->next; - - /* Now tack it on to the "place->os" section list. */ - snew->next = *place->section; - *place->section = snew; + einfo ("%X%P: can not set gp\n"); + return; } - place->section = &snew->next; /* Save the end of this list. */ - if (place->stmt == NULL) - { - /* Put the new statement list right at the head. */ - *add.tail = place->os->header.next; - place->os->header.next = add.head; - } - else + /* Now build the linker stubs. */ + if (stub_file != NULL && stub_file->the_bfd->sections != NULL) { - /* Put it after the last orphan statement we added. */ - *add.tail = *place->stmt; - *place->stmt = add.head; + if (! elf32_hppa_build_stubs (&link_info)) + einfo ("%X%P: can not build stubs: %E\n"); } - place->stmt = add.tail; /* Save the end of this list. */ } - - return true; } -/* A variant of lang_output_section_find. */ -static lang_output_section_statement_type * -output_rel_find () -{ - lang_statement_union_type *u; - lang_output_section_statement_type *lookup; - for (u = lang_output_section_statement.head; - u != (lang_statement_union_type *) NULL; - u = lookup->next) - { - lookup = &u->output_section_statement; - if (strncmp (".rel", lookup->name, 4) == 0 - && lookup->bfd_section != NULL - && (lookup->bfd_section->flags & SEC_ALLOC) != 0) - { - return lookup; - } - } - return (lang_output_section_statement_type *) NULL; -} - -/* The script itself gets inserted here. */ - -static char * -hppaelf_get_script(isfile) - int *isfile; -EOF - -if test -n "$COMPILE_IN" -then -# Scripts compiled in. +/* Avoid processing the fake stub_file in vercheck, stat_needed and + check_needed routines. */ -# sed commands to quote an ld script as a C string. -sc="-f stringify.sed" +static void (*real_func) (lang_input_statement_type *); -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 <