9d9d72fcf5
generation. (hppaosf_finish, hppaosf_search_for_padding_statements, hppaosf_create_output_section_statements): New functions in support of linker stub generation. (ld_hppaosf_emulation): Redefine to include new emulation-specific routines.
302 lines
8.1 KiB
Plaintext
302 lines
8.1 KiB
Plaintext
# 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 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 "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 "ldlang.h"
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#include "ldmisc.h"
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extern boolean lang_float_flag;
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extern enum bfd_architecture ldfile_output_architecture;
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extern unsigned long ldfile_output_machine;
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extern char *ldfile_output_machine_name;
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extern bfd *output_bfd;
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static void hppaosf_before_parse()
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{
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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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extern lang_statement_list_type *stat_ptr;
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/* List of statements needed to handle constructors */
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extern lang_statement_list_type constructor_list;
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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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extern ld_config_type config;
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if (config.relocateable_output == 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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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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extern ld_config_type config;
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*isfile = 0;
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if (config.relocateable_output == true && config.build_constructors == true)
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return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
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else if (config.relocateable_output == 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_${EMULATION_NAME}.c <<EOF
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{
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extern ld_config_type config;
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*isfile = 1;
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if (config.relocateable_output == true && config.build_constructors == true)
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return "ldscripts/${EMULATION_NAME}.xu";
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else if (config.relocateable_output == 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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