4a6afc88bb
more efficient backend code can be written for specific object files. * lderror.c, lderror.h, ldindr.c, ldindr.h, ldsym.c, ldsym.h, ldwarn.c, ldwarn.h, relax.c, relax.h: Removed. * ldctor.c, ldctor.h: Complete rewrite. * ldwrite.c, ldwrite.h: Complete rewrite. * ld.h (strip_symbols_type, strip_symbols): Removed. Use link_info.strip instead. Changed all uses. (discard_locals_type, discard_locals): Removed. Use link_info.discard instead. Changed all uses. (ld_config_type): Removed relocateable_output field; use link_info.relocateable instead; changed all uses. Added stats field. (set_asymbol_chain, get_asymbol_chain, get_loader_symbol, set_loader_symbol): Removed. * ldexp.h (node_class): Added etree_rel. (etree_type): Added rel field. * ldexp.c (exp_print_token): Bracketed table initialization. (exp_relop): New function. (fold_name): Use linker hash table rather than ldsym functions. (exp_fold_tree): Likewise. Also, handle etree_rel case. (exp_print_tree): Handle etree_rel. * ldgram.y (strip_symbols, discard_locals): Removed. (OPTION_stats, OPTION_no_keep_memory): New tokens. Handle them. (REL): New token. Does not appear in grammar, but needed for expression code. (file): Don't call lang_final; it's called by main anyhow. * ldlex.l: Accept -stats and -no-keep-memory options. * ldlang.h (fill_type): Make unsigned int, not unsigned short. * ldlang.c: Consistently use fill_type for fill argument. (lang_init_script_file, script_file): Removed. (create_object_symbols): Removed. Use link_info.create_object_symbols_section instead. Changed all uses. (lang_add_keepsyms_file): Removed. (lookup_name): Call bfd_link_add_symbols instead of ldmain_open_file_read_symbol. (wild): Don't iterate over script_file. (open_output): Create link hash table. (lang_place_undefineds): Rewrote. (lang_size_sections): Handle relaxing (doesn't work yet). (lang_relocate_globals): Removed. (lang_finish): Use link hash table rather than ldsym functions. (lang_common): Rewrote. (lang_one_common): New function. (ldlang_add_file): Add file to link_info.input_bfds list. Set usrdata. (create_symbol): Removed. (lang_process): Don't call lang_init_script_file. Call ldctor_build_sets rather than find_constructors. Don't call lang_relocate_globals. (lang_abs_symbol_at_beginning_of): Rewrote. (lang_abs_symbol_at_end_of): Rewrote. * ldmain.c (had_y): Removed. (lprefix, lprefix_len): Removed; use link_info fields instead. Changed all uses. (multiple_def_count, commons_pending, undefined_global_sym_count, total_symbols_seen, total_files_seen): Removed. (link_callbacks, link_info): New variables. (main): Initialize link_info. Don't call init_bfd_error_vector or ldsym_init. Don't set now unused variables. Handle -stats. (get_emulation): Removed obsolete and nonfunctional GNU960 code. (add_ysym): Rewrote. (read_entry_symbols, refize, enter_global_ref, enter_file_symbols, search_library, gnu960_check_format, decode_library_subfile, linear_library, symdef_library, clear_syms, subfile_wanted_p): Removed. (add_keepsyms_file, add_archive_element, multiple_definition, multiple_common, add_to_set, warning_callback, undefined_symbol, reloc_overflow, reloc_dangerous, unattached_reloc, notice_ysym): New functions. * ldmisc.c (vfinfo): Accept a string for %T, not a symbol. Don't require symbols for %C; look them up instead. * emultempl/hppaosf.em: Pass link_info to hppa_look_for_stubs_in_section. * Makefile.in: Rebuilt dependencies. (CFILES): Removed lderror.c, ldindr.c, ldsym.c, ldwarn.c, and relax.c. (HFILES): Removed lderror.h, ldindr.h, ldsym.h, ldwarn.h, and relax.h. (EMULATION_OFILES): Depend on bfdlink.h, ldmain.h, ldexp.h, ldlang.h and ldctor.h. * Makefile.in (ldlex.c): Don't depend on ldgram.h. Remove declarations of free and malloc from flex output. Change malloc to ldmalloc in flex output.
290 lines
7.8 KiB
Text
290 lines
7.8 KiB
Text
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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cat >em_${EMULATION_NAME}.c <<EOF
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/* An emulation for HP PA-RISC OSF/1 linkers.
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Copyright (C) 1991, 1993 Free Software Foundation, Inc.
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Written by Steve Chamberlain steve@cygnus.com
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This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "config.h"
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#include "ldemul.h"
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#include "ldfile.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldmisc.h"
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#include "ldmain.h"
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#include "ldctor.h"
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static void hppaosf_before_parse()
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{
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link_info.lprefix = "L$";
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link_info.lprefix_len = 2;
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ldfile_output_architecture = bfd_arch_hppa;
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}
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static lang_input_statement_type *stub_file = 0;
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static lang_input_section_type *stub_input_section = NULL;
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static void
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hppaosf_search_for_padding_statements(s,prev)
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lang_statement_union_type *s;
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lang_statement_union_type **prev;
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{
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lang_statement_union_type *sprev = NULL;
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for (; s != (lang_statement_union_type *) NULL; s = s->next)
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{
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switch (s->header.type)
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{
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case lang_constructors_statement_enum:
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hppaosf_search_for_padding_statements (constructor_list.head,&constructor_list.head);
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break;
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case lang_output_section_statement_enum:
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hppaosf_search_for_padding_statements
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(s->output_section_statement.children.head,&s->output_section_statement.children.head);
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break;
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case lang_wild_statement_enum:
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hppaosf_search_for_padding_statements
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(s->wild_statement.children.head,&s->wild_statement.children.head);
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break;
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case lang_data_statement_enum:
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case lang_object_symbols_statement_enum:
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case lang_output_statement_enum:
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case lang_target_statement_enum:
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case lang_input_section_enum:
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case lang_input_statement_enum:
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case lang_assignment_statement_enum:
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case lang_address_statement_enum:
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break;
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case lang_padding_statement_enum:
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if ( sprev )
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{
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sprev->header.next = s->header.next;
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}
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else
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{
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**prev = *s;
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}
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break;
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default:
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FAIL ();
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break;
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}
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sprev = s;
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}
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}
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static void
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hppaosf_finish()
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{
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extern asymbol *hppa_look_for_stubs_in_section();
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if (link_info.relocateable == false)
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{
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/* check for needed stubs */
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LANG_FOR_EACH_INPUT_SECTION
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(statement, abfd, section,
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(
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{
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int new_sym_cnt = 0;
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int i,j;
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asymbol *syms = hppa_look_for_stubs_in_section (stub_file->the_bfd,
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abfd,
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output_bfd,
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section,
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statement->asymbols,
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&new_sym_cnt,
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&link_info);
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if ( (new_sym_cnt > 0) && syms )
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{
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struct symbol_cache_entry **old_asymbols = stub_file->asymbols;
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stub_file->asymbols = ldmalloc((stub_file->symbol_count + new_sym_cnt) * sizeof(asymbol *));
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for ( j = 0; j < stub_file->symbol_count; j++ )
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stub_file->asymbols[j] = old_asymbols[j];
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for ( j = 0, i = stub_file->symbol_count; j < new_sym_cnt; j++, i++ )
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stub_file->asymbols[i] = &syms[j];
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stub_file->symbol_count += new_sym_cnt;
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/* Now, attach the contents of the new linker stub(s) */
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/* to the linker stub input section. */
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}
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}
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)
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)
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/* Add a statement to get the linker stubs included in the output */
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lang_add_wild(".hppa_linker_stubs",NULL);
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/* If we've added stubs,remove the padding_statements because */
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/* they are no longer valid */
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hppaosf_search_for_padding_statements(stat_ptr->head,&(stat_ptr->head));
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}
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}
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static void
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hppaosf_create_output_section_statements()
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{
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asection *stub_sec;
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asection *output_text_sec = bfd_make_section_old_way(output_bfd,".text");
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lang_input_section_type *new_input_sec;
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stub_file = lang_add_input_file ("linker stubs",
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lang_input_file_is_fake_enum,
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(char *) NULL);
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stub_file->the_bfd = bfd_create ("linker stubs", output_bfd);
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stub_file->symbol_count = 0;
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stub_file->the_bfd->sections = 0;
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stub_sec = bfd_make_section_old_way(stub_file->the_bfd,".hppa_linker_stubs");
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stub_sec->output_section = output_text_sec;
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bfd_set_section_flags(stub_file->the_bfd, stub_sec, SEC_HAS_CONTENTS | SEC_ALLOC | SEC_CODE | SEC_RELOC );
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/* The user data of a bfd points to the input statement attached */
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stub_file->the_bfd->usrdata = (void *)stub_file;
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stub_file->common_section =
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bfd_make_section(stub_file->the_bfd,"COMMON");
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new_input_sec = (lang_input_section_type *)stat_alloc(sizeof(lang_input_section_type));
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if ( new_input_sec )
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{
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lang_output_section_statement_type *text_output_sec;
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lang_statement_union_type *stmt;
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lang_wild_statement_type *stub_statement;
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new_input_sec->section = stub_sec;
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new_input_sec->ifile = stub_file;
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new_input_sec->header.type = lang_input_section_enum;
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new_input_sec->header.next = NULL;
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stub_input_section = new_input_sec;
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/* Find the output_section_statement for .text, */
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/* then find the wild_statement for .hppa_linker_stubs */
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text_output_sec = lang_output_section_find(".text");
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stmt = text_output_sec->children.head;
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while (stmt && stmt->header.type != lang_wild_statement_enum)
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{
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stmt = stmt->header.next;
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}
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if ( stmt )
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{
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lang_wild_statement_type *wstmt = (lang_wild_statement_type *)stmt;
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lang_list_init(&wstmt->children);
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lang_statement_append(&wstmt->children,
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(lang_statement_union_type *)new_input_sec,
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&new_input_sec->header.next);
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}
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}
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}
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static void
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hppaosf_set_output_arch()
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{
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/* Set the output architecture and machine if possible */
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unsigned long machine = 0;
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bfd_set_arch_mach(output_bfd, ldfile_output_architecture, machine);
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}
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static char *
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hppaosf_get_script(isfile)
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int *isfile;
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EOF
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if test -n "$COMPILE_IN"
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then
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# Scripts compiled in.
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# sed commands to quote an ld script as a C string.
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sc='s/["\\]/\\&/g
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s/$/\\n\\/
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1s/^/"{/
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$s/$/n}"/
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'
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cat >>em_${EMULATION_NAME}.c <<EOF
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{
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*isfile = 0;
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if (link_info.relocateable == true && config.build_constructors == true)
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return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
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else if (link_info.relocateable == true)
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return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
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else if (!config.text_read_only)
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return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
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else if (!config.magic_demand_paged)
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return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
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else
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return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
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}
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EOF
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else
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# Scripts read from the filesystem.
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cat >>em_${EMULATION_NAME}.c <<EOF
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{
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*isfile = 1;
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if (link_info.relocateable == true && config.build_constructors == true)
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return "ldscripts/${EMULATION_NAME}.xu";
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else if (link_info.relocateable == true)
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return "ldscripts/${EMULATION_NAME}.xr";
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else if (!config.text_read_only)
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return "ldscripts/${EMULATION_NAME}.xbn";
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else if (!config.magic_demand_paged)
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return "ldscripts/${EMULATION_NAME}.xn";
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else
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return "ldscripts/${EMULATION_NAME}.x";
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}
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EOF
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fi
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cat >>em_${EMULATION_NAME}.c <<EOF
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struct ld_emulation_xfer_struct ld_hppaosf_emulation =
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{
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hppaosf_before_parse,
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syslib_default,
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hll_default,
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after_parse_default,
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after_allocation_default,
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hppaosf_set_output_arch,
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ldemul_default_target,
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before_allocation_default,
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hppaosf_get_script,
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"hppaosf",
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"elf32-hppa",
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hppaosf_finish,
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hppaosf_create_output_section_statements
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};
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EOF
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