/* Copyright (C) 1991 Free Software Foundation, Inc. This file is part of GLD, the Gnu Linker. GLD 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 1, or (at your option) any later version. GLD 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 GLD; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "bfd.h" #include "sysdep.h" #include "ld.h" #include "ldmain.h" #include "ldsym.h" #include "ldgram.h" #include "ldwarn.h" #include "ldlang.h" #include "ldexp.h" #include "ldemul.h" #include "ldlex.h" #include "ldmisc.h" #include "ldindr.h" #include "ldctor.h" /* FORWARDS */ PROTO (static void, print_statements, (void)); PROTO (static void, print_statement, (lang_statement_union_type *, lang_output_section_statement_type *)); /* LOCALS */ static struct obstack stat_obstack; #define obstack_chunk_alloc ldmalloc #define obstack_chunk_free free static CONST char *startup_file; static lang_statement_list_type input_file_chain; /* Points to the last statement in the .data section, so we can add stuff to the data section without pain */ static lang_statement_list_type end_of_data_section_statement_list; /* List of statements needed to handle constructors */ extern lang_statement_list_type constructor_list; static boolean placed_commons = false; static lang_output_section_statement_type *default_common_section; static boolean map_option_f; static bfd_vma print_dot; static lang_input_statement_type *first_file; static lang_statement_list_type lang_output_section_statement; static CONST char *current_target; static CONST char *output_target; static size_t longest_section_name = 8; static asection common_section; static section_userdata_type common_section_userdata; static lang_statement_list_type statement_list; /* EXPORTS */ boolean relaxing; lang_output_section_statement_type *abs_output_section; lang_statement_list_type *stat_ptr = &statement_list; lang_input_statement_type *script_file = 0; boolean option_longmap = false; lang_statement_list_type file_chain = {0}; CONST char *entry_symbol = 0; bfd_size_type largest_section = 0; boolean lang_has_input_file = false; lang_output_section_statement_type *create_object_symbols = 0; boolean had_output_filename = false; boolean lang_float_flag = false; /* IMPORTS */ extern char *default_target; extern unsigned int undefined_global_sym_count; extern char *current_file; extern bfd *output_bfd; extern enum bfd_architecture ldfile_output_architecture; extern unsigned long ldfile_output_machine; extern char *ldfile_output_machine_name; extern ldsym_type *symbol_head; extern unsigned int commons_pending; extern args_type command_line; extern ld_config_type config; extern boolean had_script; extern boolean write_map; #ifdef __STDC__ #define cat(a,b) a##b #else #define cat(a,b) a/**/b #endif #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y) #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma) #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section)) void EXFUN (lang_add_data, (int type, union etree_union * exp)); PTR DEFUN (stat_alloc, (size), size_t size) { return obstack_alloc (&stat_obstack, size); } static void DEFUN (print_size, (value), size_t value) { fprintf (config.map_file, "%5x", (unsigned) value); } static void DEFUN (print_alignment, (value), unsigned int value) { fprintf (config.map_file, "2**%1u", value); } static void DEFUN (print_fill, (value), fill_type value) { fprintf (config.map_file, "%04x", (unsigned) value); } static void DEFUN (print_section, (name), CONST char *CONST name) { fprintf (config.map_file, "%*s", -longest_section_name, name); } /*---------------------------------------------------------------------- lang_for_each_statement walks the parse tree and calls the provided function for each node */ static void DEFUN (lang_for_each_statement_worker, (func, s), void (*func) ()AND lang_statement_union_type * s) { for (; s != (lang_statement_union_type *) NULL; s = s->next) { func (s); switch (s->header.type) { case lang_constructors_statement_enum: lang_for_each_statement_worker (func, constructor_list.head); break; case lang_output_section_statement_enum: lang_for_each_statement_worker (func, s->output_section_statement.children.head); break; case lang_wild_statement_enum: lang_for_each_statement_worker (func, s->wild_statement.children.head); break; 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_padding_statement_enum: case lang_address_statement_enum: break; default: FAIL (); break; } } } void DEFUN (lang_for_each_statement, (func), void (*func) ()) { lang_for_each_statement_worker (func, statement_list.head); } /*----------------------------------------------------------------------*/ void DEFUN (lang_list_init, (list), lang_statement_list_type * list) { list->head = (lang_statement_union_type *) NULL; list->tail = &list->head; } /*---------------------------------------------------------------------- build a new statement node for the parse tree */ static lang_statement_union_type * DEFUN (new_statement, (type, size, list), enum statement_enum type AND bfd_size_type size AND lang_statement_list_type * list) { lang_statement_union_type *new = (lang_statement_union_type *) stat_alloc (size); new->header.type = type; new->header.next = (lang_statement_union_type *) NULL; lang_statement_append (list, new, &new->header.next); return new; } /* Build a new input file node for the language. There are several ways in which we treat an input file, eg, we only look at symbols, or prefix it with a -l etc. We can be supplied with requests for input files more than once; they may, for example be split over serveral lines like foo.o(.text) foo.o(.data) etc, so when asked for a file we check that we havn't got it already so we don't duplicate the bfd. */ static lang_input_statement_type * DEFUN (new_afile, (name, file_type, target), CONST char *CONST name AND CONST lang_input_file_enum_type file_type AND CONST char *CONST target) { lang_input_statement_type *p = new_stat (lang_input_statement, stat_ptr); lang_has_input_file = true; p->target = target; p->complained = false; switch (file_type) { case lang_input_file_is_symbols_only_enum: p->filename = name; p->is_archive = false; p->real = true; p->local_sym_name = name; p->just_syms_flag = true; p->search_dirs_flag = false; break; case lang_input_file_is_fake_enum: p->filename = name; p->is_archive = false; p->real = false; p->local_sym_name = name; p->just_syms_flag = false; p->search_dirs_flag = false; break; case lang_input_file_is_l_enum: p->is_archive = true; p->filename = name; p->real = true; p->local_sym_name = concat ("-l", name, ""); p->just_syms_flag = false; p->search_dirs_flag = true; break; case lang_input_file_is_search_file_enum: case lang_input_file_is_marker_enum: p->filename = name; p->is_archive = false; p->real = true; p->local_sym_name = name; p->just_syms_flag = false; p->search_dirs_flag = true; break; case lang_input_file_is_file_enum: p->filename = name; p->is_archive = false; p->real = true; p->local_sym_name = name; p->just_syms_flag = false; p->search_dirs_flag = false; break; default: FAIL (); } p->asymbols = (asymbol **) NULL; p->superfile = (lang_input_statement_type *) NULL; p->next_real_file = (lang_statement_union_type *) NULL; p->next = (lang_statement_union_type *) NULL; p->symbol_count = 0; p->common_output_section = (asection *) NULL; lang_statement_append (&input_file_chain, (lang_statement_union_type *) p, &p->next_real_file); return p; } lang_input_statement_type * DEFUN (lang_add_input_file, (name, file_type, target), CONST char *name AND lang_input_file_enum_type file_type AND CONST char *target) { /* Look it up or build a new one */ lang_has_input_file = true; #if 0 lang_input_statement_type *p; for (p = (lang_input_statement_type *) input_file_chain.head; p != (lang_input_statement_type *) NULL; p = (lang_input_statement_type *) (p->next_real_file)) { /* Sometimes we have incomplete entries in here */ if (p->filename != (char *) NULL) { if (strcmp (name, p->filename) == 0) return p; } } #endif return new_afile (name, file_type, target); } /* Build enough state so that the parser can build its tree */ void DEFUN_VOID (lang_init) { obstack_begin (&stat_obstack, 1000); stat_ptr = &statement_list; lang_list_init (stat_ptr); lang_list_init (&input_file_chain); lang_list_init (&lang_output_section_statement); lang_list_init (&file_chain); first_file = lang_add_input_file ((char *) NULL, lang_input_file_is_marker_enum, (char *) NULL); abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); abs_output_section->bfd_section = &bfd_abs_section; } /*---------------------------------------------------------------------- A region is an area of memory declared with the MEMORY { name:org=exp, len=exp ... } syntax. We maintain a list of all the regions here If no regions are specified in the script, then the default is used which is created when looked up to be the entire data space */ static lang_memory_region_type *lang_memory_region_list; static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; lang_memory_region_type * DEFUN (lang_memory_region_lookup, (name), CONST char *CONST name) { lang_memory_region_type *p = lang_memory_region_list; for (p = lang_memory_region_list; p != (lang_memory_region_type *) NULL; p = p->next) { if (strcmp (p->name, name) == 0) { return p; } } if (strcmp (name, "*default*") == 0) { /* This is the default region, dig out first one on the list */ if (lang_memory_region_list != (lang_memory_region_type *) NULL) { return lang_memory_region_list; } } { lang_memory_region_type *new = (lang_memory_region_type *) stat_alloc ((bfd_size_type) (sizeof (lang_memory_region_type))); new->name = buystring (name); new->next = (lang_memory_region_type *) NULL; *lang_memory_region_list_tail = new; lang_memory_region_list_tail = &new->next; new->origin = 0; new->length = ~0; new->current = 0; new->had_full_message = false; return new; } } lang_output_section_statement_type * DEFUN (lang_output_section_find, (name), CONST char *CONST name) { 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 (strcmp (name, lookup->name) == 0) { return lookup; } } return (lang_output_section_statement_type *) NULL; } lang_output_section_statement_type * DEFUN (lang_output_section_statement_lookup, (name), CONST char *CONST name) { lang_output_section_statement_type *lookup; lookup = lang_output_section_find (name); if (lookup == (lang_output_section_statement_type *) NULL) { lookup = (lang_output_section_statement_type *) new_stat (lang_output_section_statement, stat_ptr); lookup->region = (lang_memory_region_type *) NULL; lookup->fill = 0; lookup->block_value = 1; lookup->name = name; lookup->next = (lang_statement_union_type *) NULL; lookup->bfd_section = (asection *) NULL; lookup->processed = false; lookup->loadable = 1; lookup->addr_tree = (etree_type *) NULL; lang_list_init (&lookup->children); lang_statement_append (&lang_output_section_statement, (lang_statement_union_type *) lookup, &lookup->next); } return lookup; } /*ARGSUSED*/ static void DEFUN (print_flags, (ignore_flags), int *ignore_flags) { fprintf (config.map_file, "("); #if 0 if (flags->flag_read) fprintf (outfile, "R"); if (flags->flag_write) fprintf (outfile, "W"); if (flags->flag_executable) fprintf (outfile, "X"); if (flags->flag_loadable) fprintf (outfile, "L"); #endif fprintf (config.map_file, ")"); } void DEFUN_VOID (lang_map) { lang_memory_region_type *m; fprintf (config.map_file, "**MEMORY CONFIGURATION**\n\n"); #ifdef HOST_64_BIT fprintf (config.map_file, "name\t\torigin\t\tlength\t\tattributes\n"); #else fprintf (config.map_file, "name\t\torigin length r_size c_size is attributes\n"); #endif for (m = lang_memory_region_list; m != (lang_memory_region_type *) NULL; m = m->next) { fprintf (config.map_file, "%-16s", m->name); print_address (m->origin); print_space (); print_address (m->length); print_space (); print_address (m->old_length); print_space(); print_address (m->current - m->origin); print_space(); if (m->old_length) fprintf(config.map_file," %2d%% ", ( m->current - m->origin) * 100 / m->old_length); print_flags (&m->flags); fprintf (config.map_file, "\n"); } fprintf (config.map_file, "\n\n**LINK EDITOR MEMORY MAP**\n\n"); fprintf (config.map_file, "output input virtual\n"); fprintf (config.map_file, "section section address tsize\n\n"); print_statements (); } /* * */ static void DEFUN (init_os, (s), lang_output_section_statement_type * s) { /* asection *section = bfd_get_section_by_name(output_bfd, s->name);*/ section_userdata_type *new = (section_userdata_type *) stat_alloc ((bfd_size_type) (sizeof (section_userdata_type))); s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); if (s->bfd_section == (asection *) NULL) s->bfd_section = bfd_make_section (output_bfd, s->name); if (s->bfd_section == (asection *) NULL) { einfo ("%P%F output format %s cannot represent section called %s\n", output_bfd->xvec->name, s->name); } s->bfd_section->output_section = s->bfd_section; /* s->bfd_section->flags = s->flags;*/ /* We initialize an output sections output offset to minus its own */ /* vma to allow us to output a section through itself */ s->bfd_section->output_offset = 0; get_userdata (s->bfd_section) = (PTR) new; } /*********************************************************************** The wild routines. These expand statements like *(.text) and foo.o to a list of explicit actions, like foo.o(.text), bar.o(.text) and foo.o(.text,.data) . The toplevel routine, wild, takes a statement, section, file and target. If either the section or file is null it is taken to be the wildcard. Seperate lang_input_section statements are created for each part of the expanstion, and placed after the statement provided. */ static void DEFUN (wild_doit, (ptr, section, output, file), lang_statement_list_type * ptr AND asection * section AND lang_output_section_statement_type * output AND lang_input_statement_type * file) { if (output->bfd_section == (asection *) NULL) { init_os (output); } if (section != (asection *) NULL && section->output_section == (asection *) NULL) { /* Add a section reference to the list */ lang_input_section_type *new = new_stat (lang_input_section, ptr); new->section = section; new->ifile = file; section->output_section = output->bfd_section; section->output_section->flags |= section->flags; if (!output->loadable) { /* Turn of load flag */ output->bfd_section->flags &= ~SEC_LOAD; } if (section->alignment_power > output->bfd_section->alignment_power) { output->bfd_section->alignment_power = section->alignment_power; } } } static asection * DEFUN (our_bfd_get_section_by_name, (abfd, section), bfd * abfd AND CONST char *section) { return bfd_get_section_by_name (abfd, section); } static void DEFUN (wild_section, (ptr, section, file, output), lang_wild_statement_type * ptr AND CONST char *section AND lang_input_statement_type * file AND lang_output_section_statement_type * output) { asection *s; if (file->just_syms_flag == false) { if (section == (char *) NULL) { /* Do the creation to all sections in the file */ for (s = file->the_bfd->sections; s != (asection *) NULL; s = s->next) { wild_doit (&ptr->children, s, output, file); } } else { /* Do the creation to the named section only */ wild_doit (&ptr->children, our_bfd_get_section_by_name (file->the_bfd, section), output, file); } } } /* passed a file name (which must have been seen already and added to the statement tree. We will see if it has been opened already and had its symbols read. If not then we'll read it. Archives are pecuilar here. We may open them once, but if they do not define anything we need at the time, they won't have all their symbols read. If we need them later, we'll have to redo it. */ static lang_input_statement_type * DEFUN (lookup_name, (name), CONST char *CONST name) { lang_input_statement_type *search; for (search = (lang_input_statement_type *) input_file_chain.head; search != (lang_input_statement_type *) NULL; search = (lang_input_statement_type *) search->next_real_file) { if (search->filename == (char *) NULL && name == (char *) NULL) { return search; } if (search->filename != (char *) NULL && name != (char *) NULL) { if (strcmp (search->filename, name) == 0) { ldmain_open_file_read_symbol (search); return search; } } } /* There isn't an afile entry for this file yet, this must be because the name has only appeared inside a load script and not on the command line */ search = new_afile (name, lang_input_file_is_file_enum, default_target); ldmain_open_file_read_symbol (search); return search; } static void DEFUN (wild, (s, section, file, target, output), lang_wild_statement_type * s AND CONST char *CONST section AND CONST char *CONST file AND CONST char *CONST target AND lang_output_section_statement_type * output) { lang_input_statement_type *f; if (file == (char *) NULL) { /* Perform the iteration over all files in the list */ for (f = (lang_input_statement_type *) file_chain.head; f != (lang_input_statement_type *) NULL; f = (lang_input_statement_type *) f->next) { wild_section (s, section, f, output); } } else { /* Perform the iteration over a single file */ wild_section (s, section, lookup_name (file), output); } if (section != (char *) NULL && strcmp (section, "COMMON") == 0 && default_common_section == (lang_output_section_statement_type *) NULL) { /* Remember the section that common is going to incase we later get something which doesn't know where to put it */ default_common_section = output; } } /* read in all the files */ static bfd * DEFUN (open_output, (name), CONST char *CONST name) { extern unsigned long ldfile_output_machine; extern enum bfd_architecture ldfile_output_architecture; extern CONST char *output_filename; bfd *output; if (output_target == (char *) NULL) { if (current_target != (char *) NULL) output_target = current_target; else output_target = default_target; } output = bfd_openw (name, output_target); output_filename = name; if (output == (bfd *) NULL) { if (bfd_error == invalid_target) { einfo ("%P%F target %s not found\n", output_target); } einfo ("%P%F problem opening output file %s, %E", name); } /* output->flags |= D_PAGED;*/ bfd_set_format (output, bfd_object); bfd_set_arch_mach (output, ldfile_output_architecture, ldfile_output_machine); return output; } static void DEFUN (ldlang_open_output, (statement), lang_statement_union_type * statement) { switch (statement->header.type) { case lang_output_statement_enum: output_bfd = open_output (statement->output_statement.name); ldemul_set_output_arch (); if (config.magic_demand_paged && !config.relocateable_output) output_bfd->flags |= D_PAGED; else output_bfd->flags &= ~D_PAGED; if (config.text_read_only) output_bfd->flags |= WP_TEXT; else output_bfd->flags &= ~WP_TEXT; break; case lang_target_statement_enum: current_target = statement->target_statement.target; break; default: break; } } static void DEFUN (open_input_bfds, (statement), lang_statement_union_type * statement) { switch (statement->header.type) { case lang_target_statement_enum: current_target = statement->target_statement.target; break; case lang_wild_statement_enum: /* Maybe we should load the file's symbols */ if (statement->wild_statement.filename) { (void) lookup_name (statement->wild_statement.filename); } break; case lang_input_statement_enum: if (statement->input_statement.real == true) { statement->input_statement.target = current_target; lookup_name (statement->input_statement.filename); } break; default: break; } } /* If there are [COMMONS] statements, put a wild one into the bss section */ static void lang_reasonable_defaults () { #if 0 lang_output_section_statement_lookup (".text"); lang_output_section_statement_lookup (".data"); default_common_section = lang_output_section_statement_lookup (".bss"); if (placed_commons == false) { lang_wild_statement_type *new = new_stat (lang_wild_statement, &default_common_section->children); new->section_name = "COMMON"; new->filename = (char *) NULL; lang_list_init (&new->children); } #endif } /* Add the supplied name to the symbol table as an undefined reference. Remove items from the chain as we open input bfds */ typedef struct ldlang_undef_chain_list { struct ldlang_undef_chain_list *next; char *name; } ldlang_undef_chain_list_type; static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head; void DEFUN (ldlang_add_undef, (name), CONST char *CONST name) { ldlang_undef_chain_list_type *new = (ldlang_undef_chain_list_type *) stat_alloc ((bfd_size_type) (sizeof (ldlang_undef_chain_list_type))); new->next = ldlang_undef_chain_list_head; ldlang_undef_chain_list_head = new; new->name = buystring (name); } /* Run through the list of undefineds created above and place them into the linker hash table as undefined symbols belonging to the script file. */ static void DEFUN_VOID (lang_place_undefineds) { ldlang_undef_chain_list_type *ptr = ldlang_undef_chain_list_head; while (ptr != (ldlang_undef_chain_list_type *) NULL) { asymbol *def; asymbol **def_ptr = (asymbol **) stat_alloc ((bfd_size_type) (sizeof (asymbol **))); def = (asymbol *) bfd_make_empty_symbol (script_file->the_bfd); *def_ptr = def; def->name = ptr->name; def->section = &bfd_und_section; Q_enter_global_ref (def_ptr, ptr->name); ptr = ptr->next; } } /* Copy important data from out internal form to the bfd way. Also create a section for the dummy file */ static void DEFUN_VOID (lang_create_output_section_statements) { lang_statement_union_type *os; for (os = lang_output_section_statement.head; os != (lang_statement_union_type *) NULL; os = os->output_section_statement.next) { lang_output_section_statement_type *s = &os->output_section_statement; init_os (s); } } static void DEFUN_VOID (lang_init_script_file) { script_file = lang_add_input_file ("script file", lang_input_file_is_fake_enum, (char *) NULL); script_file->the_bfd = bfd_create ("script file", output_bfd); script_file->symbol_count = 0; script_file->the_bfd->sections = output_bfd->sections; abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); abs_output_section->bfd_section = &bfd_abs_section; } /* Open input files and attatch to output sections */ static void DEFUN (map_input_to_output_sections, (s, target, output_section_statement), lang_statement_union_type * s AND CONST char *target AND lang_output_section_statement_type * output_section_statement) { for (; s != (lang_statement_union_type *) NULL; s = s->next) { switch (s->header.type) { case lang_wild_statement_enum: wild (&s->wild_statement, s->wild_statement.section_name, s->wild_statement.filename, target, output_section_statement); break; case lang_constructors_statement_enum: map_input_to_output_sections (constructor_list.head, target, output_section_statement); break; case lang_output_section_statement_enum: map_input_to_output_sections (s->output_section_statement.children.head, target, &s->output_section_statement); break; case lang_output_statement_enum: break; case lang_target_statement_enum: target = s->target_statement.target; break; case lang_fill_statement_enum: case lang_input_section_enum: case lang_object_symbols_statement_enum: case lang_data_statement_enum: case lang_assignment_statement_enum: case lang_padding_statement_enum: break; case lang_afile_asection_pair_statement_enum: FAIL (); break; case lang_address_statement_enum: /* Mark the specified section with the supplied address */ { lang_output_section_statement_type *os = lang_output_section_statement_lookup (s->address_statement.section_name); os->addr_tree = s->address_statement.address; if (os->bfd_section == (asection *) NULL) { einfo ("%P%F can't set the address of undefined section %s\n", s->address_statement.section_name); } } break; case lang_input_statement_enum: /* A standard input statement, has no wildcards */ /* ldmain_open_file_read_symbol(&s->input_statement);*/ break; } } } static void DEFUN (print_output_section_statement, (output_section_statement), lang_output_section_statement_type * output_section_statement) { asection *section = output_section_statement->bfd_section; print_nl (); print_section (output_section_statement->name); if (section) { print_dot = section->vma; print_space (); print_section (""); print_space (); print_address (section->vma); print_space (); print_size (section->_raw_size); print_space(); print_size(section->_cooked_size); print_space (); print_alignment (section->alignment_power); print_space (); #if 0 fprintf (config.map_file, "%s flags", output_section_statement->region->name); print_flags (stdout, &output_section_statement->flags); #endif if (section->flags & SEC_LOAD) fprintf (config.map_file, "load "); if (section->flags & SEC_ALLOC) fprintf (config.map_file, "alloc "); if (section->flags & SEC_RELOC) fprintf (config.map_file, "reloc "); if (section->flags & SEC_HAS_CONTENTS) fprintf (config.map_file, "contents "); } else { fprintf (config.map_file, "No attached output section"); } print_nl (); print_statement (output_section_statement->children.head, output_section_statement); } static void DEFUN (print_assignment, (assignment, output_section), lang_assignment_statement_type * assignment AND lang_output_section_statement_type * output_section) { etree_value_type result; print_section (""); print_space (); print_section (""); print_space (); print_address (print_dot); print_space (); result = exp_fold_tree (assignment->exp->assign.src, output_section, lang_final_phase_enum, print_dot, &print_dot); if (result.valid) { print_address (result.value); } else { fprintf (config.map_file, "*undefined*"); } print_space (); exp_print_tree (assignment->exp); fprintf (config.map_file, "\n"); } static void DEFUN (print_input_statement, (statm), lang_input_statement_type * statm) { if (statm->filename != (char *) NULL) { fprintf (config.map_file, "LOAD %s\n", statm->filename); } } static void DEFUN (print_symbol, (q), asymbol * q) { print_section (""); fprintf (config.map_file, " "); print_section (""); fprintf (config.map_file, " "); print_address (outside_symbol_address (q)); fprintf (config.map_file, " %s", q->name ? q->name : " "); print_nl (); } static void DEFUN (print_input_section, (in), lang_input_section_type * in) { asection *i = in->section; int size = i->reloc_done ? bfd_get_section_size_after_reloc (i) : bfd_get_section_size_before_reloc (i); if (size != 0) { print_section (""); fprintf (config.map_file, " "); print_section (i->name); fprintf (config.map_file, " "); if (i->output_section) { print_address (i->output_section->vma + i->output_offset); fprintf (config.map_file, " "); print_size (i->_raw_size); fprintf (config.map_file, " "); print_size(i->_cooked_size); fprintf (config.map_file, " "); print_alignment (i->alignment_power); fprintf (config.map_file, " "); if (in->ifile) { bfd *abfd = in->ifile->the_bfd; if (in->ifile->just_syms_flag == true) { fprintf (config.map_file, "symbols only "); } fprintf (config.map_file, " %s ", abfd->xvec->name); if (abfd->my_archive != (bfd *) NULL) { fprintf (config.map_file, "[%s]%s", abfd->my_archive->filename, abfd->filename); } else { fprintf (config.map_file, "%s", abfd->filename); } fprintf (config.map_file, "(overhead %d bytes)", (int) bfd_alloc_size (abfd)); print_nl (); /* Find all the symbols in this file defined in this section */ if (in->ifile->symbol_count) { asymbol **p; for (p = in->ifile->asymbols; *p; p++) { asymbol *q = *p; if (bfd_get_section (q) == i && q->flags & BSF_GLOBAL) { print_symbol (q); } } } } else { print_nl (); } print_dot = outside_section_address (i) + size; } else { fprintf (config.map_file, "No output section allocated\n"); } } } static void DEFUN (print_fill_statement, (fill), lang_fill_statement_type * fill) { fprintf (config.map_file, "FILL mask "); print_fill (fill->fill); } static void DEFUN (print_data_statement, (data), lang_data_statement_type * data) { /* bfd_vma value; */ print_section (""); print_space (); print_section (""); print_space (); /* ASSERT(print_dot == data->output_vma);*/ print_address (data->output_vma + data->output_section->vma); print_space (); print_address (data->value); print_space (); switch (data->type) { case BYTE: fprintf (config.map_file, "BYTE "); print_dot += BYTE_SIZE; break; case SHORT: fprintf (config.map_file, "SHORT "); print_dot += SHORT_SIZE; break; case LONG: fprintf (config.map_file, "LONG "); print_dot += LONG_SIZE; break; } exp_print_tree (data->exp); fprintf (config.map_file, "\n"); } static void DEFUN (print_padding_statement, (s), lang_padding_statement_type * s) { print_section (""); print_space (); print_section ("*fill*"); print_space (); print_address (s->output_offset + s->output_section->vma); print_space (); print_size (s->size); print_space (); print_fill (s->fill); print_nl (); print_dot = s->output_offset + s->output_section->vma + s->size; } static void DEFUN (print_wild_statement, (w, os), lang_wild_statement_type * w AND lang_output_section_statement_type * os) { fprintf (config.map_file, " from "); if (w->filename != (char *) NULL) { fprintf (config.map_file, "%s", w->filename); } else { fprintf (config.map_file, "*"); } if (w->section_name != (char *) NULL) { fprintf (config.map_file, "(%s)", w->section_name); } else { fprintf (config.map_file, "(*)"); } print_nl (); print_statement (w->children.head, os); } static void DEFUN (print_statement, (s, os), lang_statement_union_type * s AND lang_output_section_statement_type * os) { while (s) { switch (s->header.type) { case lang_constructors_statement_enum: fprintf (config.map_file, "constructors:\n"); print_statement (constructor_list.head, os); break; case lang_wild_statement_enum: print_wild_statement (&s->wild_statement, os); break; default: fprintf (config.map_file, "Fail with %d\n", s->header.type); FAIL (); break; case lang_address_statement_enum: fprintf (config.map_file, "address\n"); break; case lang_object_symbols_statement_enum: fprintf (config.map_file, "object symbols\n"); break; case lang_fill_statement_enum: print_fill_statement (&s->fill_statement); break; case lang_data_statement_enum: print_data_statement (&s->data_statement); break; case lang_input_section_enum: print_input_section (&s->input_section); break; case lang_padding_statement_enum: print_padding_statement (&s->padding_statement); break; case lang_output_section_statement_enum: print_output_section_statement (&s->output_section_statement); break; case lang_assignment_statement_enum: print_assignment (&s->assignment_statement, os); break; case lang_target_statement_enum: fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); break; case lang_output_statement_enum: fprintf (config.map_file, "OUTPUT(%s %s)\n", s->output_statement.name, output_target); break; case lang_input_statement_enum: print_input_statement (&s->input_statement); break; case lang_afile_asection_pair_statement_enum: FAIL (); break; } s = s->next; } } static void DEFUN_VOID (print_statements) { print_statement (statement_list.head, abs_output_section); } static bfd_vma DEFUN (insert_pad, (this_ptr, fill, power, output_section_statement, dot), lang_statement_union_type ** this_ptr AND fill_type fill AND unsigned int power AND asection * output_section_statement AND bfd_vma dot) { /* Align this section first to the input sections requirement, then to the output section's requirement. If this alignment is > than any seen before, then record it too. Perform the alignment by inserting a magic 'padding' statement. */ unsigned int alignment_needed = align_power (dot, power) - dot; if (alignment_needed != 0) { lang_statement_union_type *new = (lang_statement_union_type *) stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type))); /* Link into existing chain */ new->header.next = *this_ptr; *this_ptr = new; new->header.type = lang_padding_statement_enum; new->padding_statement.output_section = output_section_statement; new->padding_statement.output_offset = dot - output_section_statement->vma; new->padding_statement.fill = fill; new->padding_statement.size = alignment_needed; } /* Remember the most restrictive alignment */ if (power > output_section_statement->alignment_power) { output_section_statement->alignment_power = power; } output_section_statement->_raw_size += alignment_needed; return alignment_needed + dot; } /* Work out how much this section will move the dot point */ static bfd_vma DEFUN (size_input_section, (this_ptr, output_section_statement, fill, dot, relax), lang_statement_union_type ** this_ptr AND lang_output_section_statement_type * output_section_statement AND unsigned short fill AND bfd_vma dot AND boolean relax) { lang_input_section_type *is = &((*this_ptr)->input_section); asection *i = is->section; if (is->ifile->just_syms_flag == false) { dot = insert_pad (this_ptr, fill, i->alignment_power, output_section_statement->bfd_section, dot); /* remember the largest size so we can malloc the largest area needed for the output stage. Only remember the size of sections which we will actually allocate */ if (((i->flags & (SEC_HAS_CONTENTS | SEC_LOAD)) == (SEC_HAS_CONTENTS | SEC_LOAD)) && (bfd_get_section_size_before_reloc (i) > largest_section)) { largest_section = bfd_get_section_size_before_reloc (i); } /* Remember where in the output section this input section goes */ i->output_offset = dot - output_section_statement->bfd_section->vma; /* Mark how big the output section must be to contain this now */ if (relax) { dot += i->_cooked_size; } else { dot += i->_raw_size; } output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma; } else { i->output_offset = i->vma - output_section_statement->bfd_section->vma; } return dot; } /* Sizing happens in two passes, first pass we allocate worst case stuff. The second pass (if relaxing), we use what we learnt to change the size of some relocs from worst case to better */ static boolean had_relax; static bfd_vma DEFUN (lang_size_sections, (s, output_section_statement, prev, fill, dot, relax), lang_statement_union_type * s AND lang_output_section_statement_type * output_section_statement AND lang_statement_union_type ** prev AND unsigned short fill AND bfd_vma dot AND boolean relax) { /* Size up the sections from their constituent parts */ for (; s != (lang_statement_union_type *) NULL; s = s->next) { switch (s->header.type) { case lang_output_section_statement_enum: { bfd_vma after; lang_output_section_statement_type *os = &s->output_section_statement; if (os->bfd_section == &bfd_abs_section) { /* No matter what happens, an abs section starts at zero */ bfd_set_section_vma (0, os->bfd_section, 0); } else { if (os->addr_tree == (etree_type *) NULL) { /* No address specified for this section, get one from the region specification */ if (os->region == (lang_memory_region_type *) NULL) { os->region = lang_memory_region_lookup ("*default*"); } dot = os->region->current; } else { etree_value_type r; r = exp_fold_tree (os->addr_tree, abs_output_section, lang_allocating_phase_enum, dot, &dot); if (r.valid == false) { einfo ("%F%S: non constant address expression for section %s\n", os->name); } dot = r.value; } /* The section starts here */ /* First, align to what the section needs */ dot = align_power (dot, os->bfd_section->alignment_power); bfd_set_section_vma (0, os->bfd_section, dot); } os->bfd_section->output_offset = 0; (void) lang_size_sections (os->children.head, os, &os->children.head, os->fill, dot, relax); /* Ignore the size of the input sections, use the vma and size to */ /* align against */ after = ALIGN (os->bfd_section->vma + os->bfd_section->_raw_size, os->block_value); os->bfd_section->_raw_size = after - os->bfd_section->vma; dot = os->bfd_section->vma + os->bfd_section->_raw_size; os->processed = true; /* Replace into region ? */ if (os->addr_tree == (etree_type *) NULL && os->region != (lang_memory_region_type *) NULL) { os->region->current = dot; /* Make sure this isn't silly */ if (os->region->current > os->region->origin + os->region->length) { einfo ("%X%P: Region %s is full (%B section %s)\n", os->region->name, os->bfd_section->owner, os->bfd_section->name); /* Reset the region pointer */ os->region->current = 0; } } } break; case lang_constructors_statement_enum: dot = lang_size_sections (constructor_list.head, output_section_statement, &s->wild_statement.children.head, fill, dot, relax); break; case lang_data_statement_enum: { unsigned int size = 0; s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma; s->data_statement.output_section = output_section_statement->bfd_section; switch (s->data_statement.type) { case LONG: size = LONG_SIZE; break; case SHORT: size = SHORT_SIZE; break; case BYTE: size = BYTE_SIZE; break; } dot += size; output_section_statement->bfd_section->_raw_size += size; } break; case lang_wild_statement_enum: dot = lang_size_sections (s->wild_statement.children.head, output_section_statement, &s->wild_statement.children.head, fill, dot, relax); break; case lang_object_symbols_statement_enum: create_object_symbols = output_section_statement; break; case lang_output_statement_enum: case lang_target_statement_enum: break; case lang_input_section_enum: if (relax) { relaxing = true; if( relax_section (prev)) had_relax = true; relaxing = false; } else { (*prev)->input_section.section->_cooked_size = (*prev)->input_section.section->_raw_size ; } dot = size_input_section (prev, output_section_statement, output_section_statement->fill, dot, relax); break; case lang_input_statement_enum: break; case lang_fill_statement_enum: s->fill_statement.output_section = output_section_statement->bfd_section; fill = s->fill_statement.fill; break; case lang_assignment_statement_enum: { bfd_vma newdot = dot; exp_fold_tree (s->assignment_statement.exp, output_section_statement, lang_allocating_phase_enum, dot, &newdot); if (newdot != dot && !relax) /* We've been moved ! so insert a pad */ { lang_statement_union_type *new = (lang_statement_union_type *) stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type))); /* Link into existing chain */ new->header.next = *prev; *prev = new; new->header.type = lang_padding_statement_enum; new->padding_statement.output_section = output_section_statement->bfd_section; new->padding_statement.output_offset = dot - output_section_statement->bfd_section->vma; new->padding_statement.fill = fill; new->padding_statement.size = newdot - dot; output_section_statement->bfd_section->_raw_size += new->padding_statement.size; dot = newdot; } } break; default: FAIL (); break; /* This can only get here when relaxing is turned on */ case lang_padding_statement_enum: case lang_address_statement_enum: break; } prev = &s->header.next; } return dot; } static bfd_vma DEFUN (lang_do_assignments, (s, output_section_statement, fill, dot), lang_statement_union_type * s AND lang_output_section_statement_type * output_section_statement AND unsigned short fill AND bfd_vma dot) { for (; s != (lang_statement_union_type *) NULL; s = s->next) { switch (s->header.type) { case lang_constructors_statement_enum: dot = lang_do_assignments (constructor_list.head, output_section_statement, fill, dot); break; case lang_output_section_statement_enum: { lang_output_section_statement_type *os = &(s->output_section_statement); dot = os->bfd_section->vma; (void) lang_do_assignments (os->children.head, os, os->fill, dot); dot = os->bfd_section->vma + os->bfd_section->_raw_size; } break; case lang_wild_statement_enum: dot = lang_do_assignments (s->wild_statement.children.head, output_section_statement, fill, dot); break; case lang_object_symbols_statement_enum: case lang_output_statement_enum: case lang_target_statement_enum: #if 0 case lang_common_statement_enum: #endif break; case lang_data_statement_enum: { etree_value_type value; value = exp_fold_tree (s->data_statement.exp, abs_output_section, lang_final_phase_enum, dot, &dot); s->data_statement.value = value.value; if (value.valid == false) einfo ("%F%P: Invalid data statement\n"); } switch (s->data_statement.type) { case LONG: dot += LONG_SIZE; break; case SHORT: dot += SHORT_SIZE; break; case BYTE: dot += BYTE_SIZE; break; } break; case lang_input_section_enum: { asection *in = s->input_section.section; dot += bfd_get_section_size_before_reloc (in); } break; case lang_input_statement_enum: break; case lang_fill_statement_enum: fill = s->fill_statement.fill; break; case lang_assignment_statement_enum: { exp_fold_tree (s->assignment_statement.exp, output_section_statement, lang_final_phase_enum, dot, &dot); } break; case lang_padding_statement_enum: dot += s->padding_statement.size; break; default: FAIL (); break; case lang_address_statement_enum: break; } } return dot; } static void DEFUN_VOID (lang_relocate_globals) { /* Each ldsym_type maintains a chain of pointers to asymbols which references the definition. Replace each pointer to the referenence with a pointer to only one place, preferably the definition. If the defintion isn't available then the common symbol, and if there isn't one of them then choose one reference. */ FOR_EACH_LDSYM (lgs) { asymbol *it; if (lgs->sdefs_chain) { it = *(lgs->sdefs_chain); } else if (lgs->scoms_chain != (asymbol **) NULL) { it = *(lgs->scoms_chain); } else if (lgs->srefs_chain != (asymbol **) NULL) { it = *(lgs->srefs_chain); } else { /* This can happen when the command line asked for a symbol to be -u */ it = (asymbol *) NULL; } if (it != (asymbol *) NULL) { asymbol **ptr = lgs->srefs_chain;; if (lgs->flags & SYM_WARNING) { produce_warnings (lgs, it); } while (ptr != (asymbol **) NULL) { asymbol *ref = *ptr; *ptr = it; ptr = (asymbol **) (ref->udata); } } } } static void DEFUN_VOID (lang_finish) { ldsym_type *lgs; int warn = 1; if (entry_symbol == (char *) NULL) { /* No entry has been specified, look for start, but don't warn */ entry_symbol = "start"; warn =0; } lgs = ldsym_get_soft (entry_symbol); if (lgs && lgs->sdefs_chain) { asymbol *sy = *(lgs->sdefs_chain); /* We can set the entry address*/ bfd_set_start_address (output_bfd, outside_symbol_address (sy)); } else { /* Can't find anything reasonable, use the first address in the text section */ asection *ts = bfd_get_section_by_name (output_bfd, ".text"); if (ts) { if (warn) einfo ("%P: Warning, can't find entry symbol %s, defaulting to %V\n", entry_symbol, ts->vma); bfd_set_start_address (output_bfd, ts->vma); } else { if (warn) einfo ("%P: Warning, can't find entry symbol %s, not setting start address\n", entry_symbol); } } } /* By now we know the target architecture, and we may have an */ /* ldfile_output_machine_name */ static void DEFUN_VOID (lang_check) { lang_statement_union_type *file; bfd *input_bfd; unsigned long input_machine; enum bfd_architecture input_architecture; CONST bfd_arch_info_type *compatible; for (file = file_chain.head; file != (lang_statement_union_type *) NULL; file = file->input_statement.next) { unsigned long ldfile_new_output_machine = 0; enum bfd_architecture ldfile_new_output_architecture = bfd_arch_unknown; input_bfd = file->input_statement.the_bfd; input_machine = bfd_get_mach (input_bfd); input_architecture = bfd_get_arch (input_bfd); /* Inspect the architecture and ensure we're linking like with like */ compatible = bfd_arch_get_compatible (input_bfd, output_bfd); if (compatible) { ldfile_output_machine = compatible->mach; ldfile_output_architecture = compatible->arch; } else { info ("%P: warning, %s architecture of input file `%B' incompatible with %s output\n", bfd_printable_name (input_bfd), input_bfd, bfd_printable_name (output_bfd)); bfd_set_arch_mach (output_bfd, input_architecture, input_machine); } } } /* * run through all the global common symbols and tie them * to the output section requested. * As an experiment we do this 4 times, once for all the byte sizes, then all the two bytes, all the four bytes and then everything else */ static void DEFUN_VOID (lang_common) { ldsym_type *lgs; size_t power; if (config.relocateable_output == false || command_line.force_common_definition == true) { for (power = 1; (config.sort_common == true && power == 1) || (power <= 16); power <<= 1) { for (lgs = symbol_head; lgs != (ldsym_type *) NULL; lgs = lgs->next) { asymbol *com; unsigned int power_of_two; size_t size; size_t align; if (lgs->scoms_chain != (asymbol **) NULL) { com = *(lgs->scoms_chain); size = com->value; switch (size) { case 0: case 1: align = 1; power_of_two = 0; break; case 2: power_of_two = 1; align = 2; break; case 3: case 4: power_of_two = 2; align = 4; break; case 5: case 6: case 7: case 8: power_of_two = 3; align = 8; break; default: power_of_two = 4; align = 16; break; } if (config.sort_common == false || align == power) { /* Change from a common symbol into a definition of a symbol */ lgs->sdefs_chain = lgs->scoms_chain; lgs->scoms_chain = (asymbol **) NULL; commons_pending--; /* Point to the correct common section */ com->section = ((lang_input_statement_type *) (com->the_bfd->usrdata))->common_section; /* Fix the size of the common section */ com->section->_raw_size = ALIGN (com->section->_raw_size, align); /* Remember if this is the biggest alignment ever seen */ if (power_of_two > com->section->alignment_power) { com->section->alignment_power = power_of_two; } /* Symbol stops being common and starts being global, but we remember that it was common once. */ com->flags = BSF_EXPORT | BSF_GLOBAL | BSF_OLD_COMMON; com->value = com->section->_raw_size; if (write_map) { fprintf (config.map_file, "Allocating common %s: %x at %x %s\n", lgs->name, (unsigned) size, (unsigned) com->value, com->the_bfd->filename); } com->section->_raw_size += size; } } } } } } /* run through the input files and ensure that every input section has somewhere to go. If one is found without a destination then create an input request and place it into the statement tree. */ static void DEFUN_VOID (lang_place_orphans) { lang_input_statement_type *file; for (file = (lang_input_statement_type *) file_chain.head; file != (lang_input_statement_type *) NULL; file = (lang_input_statement_type *) file->next) { asection *s; for (s = file->the_bfd->sections; s != (asection *) NULL; s = s->next) { if (s->output_section == (asection *) NULL) { /* This section of the file is not attatched, root around for a sensible place for it to go */ if (file->common_section == s) { /* This is a lonely common section which must have come from an archive. We attatch to the section with the wildcard */ if (config.relocateable_output != true && command_line.force_common_definition == false) { if (default_common_section == (lang_output_section_statement_type *) NULL) { info ("%P: No [COMMON] command, defaulting to .bss\n"); default_common_section = lang_output_section_statement_lookup (".bss"); } wild_doit (&default_common_section->children, s, default_common_section, file); } } else { lang_output_section_statement_type *os = lang_output_section_statement_lookup (s->name); wild_doit (&os->children, s, os, file); } } } } } void DEFUN (lang_set_flags, (ptr, flags), int *ptr AND CONST char *flags) { boolean state = false; *ptr = 0; while (*flags) { if (*flags == '!') { state = false; flags++; } else state = true; switch (*flags) { case 'R': /* ptr->flag_read = state; */ break; case 'W': /* ptr->flag_write = state; */ break; case 'X': /* ptr->flag_executable= state;*/ break; case 'L': case 'I': /* ptr->flag_loadable= state;*/ break; default: einfo ("%P%F illegal syntax in flags\n"); break; } flags++; } } void DEFUN (lang_for_each_file, (func), PROTO (void, (*func), (lang_input_statement_type *))) { lang_input_statement_type *f; for (f = (lang_input_statement_type *) file_chain.head; f != (lang_input_statement_type *) NULL; f = (lang_input_statement_type *) f->next) { func (f); } } void DEFUN (lang_for_each_input_section, (func), PROTO (void, (*func), (bfd * ab, asection * as))) { lang_input_statement_type *f; for (f = (lang_input_statement_type *) file_chain.head; f != (lang_input_statement_type *) NULL; f = (lang_input_statement_type *) f->next) { asection *s; for (s = f->the_bfd->sections; s != (asection *) NULL; s = s->next) { func (f->the_bfd, s); } } } void DEFUN (ldlang_add_file, (entry), lang_input_statement_type * entry) { lang_statement_append (&file_chain, (lang_statement_union_type *) entry, &entry->next); } void DEFUN (lang_add_output, (name), CONST char *name) { lang_output_statement_type *new = new_stat (lang_output_statement, stat_ptr); new->name = name; had_output_filename = true; } static lang_output_section_statement_type *current_section; void DEFUN (lang_enter_output_section_statement, (output_section_statement_name, address_exp, flags, block_value), char *output_section_statement_name AND etree_type * address_exp AND int flags AND bfd_vma block_value) { lang_output_section_statement_type *os; current_section = os = lang_output_section_statement_lookup (output_section_statement_name); /* Add this statement to tree */ /* add_statement(lang_output_section_statement_enum, output_section_statement);*/ /* Make next things chain into subchain of this */ if (os->addr_tree == (etree_type *) NULL) { os->addr_tree = address_exp; } os->flags = flags; if (flags & SEC_NEVER_LOAD) os->loadable = 0; else os->loadable = 1; os->block_value = block_value; stat_ptr = &os->children; } void DEFUN_VOID (lang_final) { if (had_output_filename == false) { extern CONST char *output_filename; lang_add_output (output_filename); } } /* Reset the current counters in the regions */ static void DEFUN_VOID (reset_memory_regions) { lang_memory_region_type *p = lang_memory_region_list; for (p = lang_memory_region_list; p != (lang_memory_region_type *) NULL; p = p->next) { p->old_length = p->current - p->origin; p->current = p->origin; } } asymbol * DEFUN (create_symbol, (name, flags, section), CONST char *name AND flagword flags AND asection * section) { extern lang_input_statement_type *script_file; asymbol **def_ptr = (asymbol **) stat_alloc ((bfd_size_type) (sizeof (asymbol **))); /* Add this definition to script file */ asymbol *def = (asymbol *) bfd_make_empty_symbol (script_file->the_bfd); def->name = buystring (name); def->udata = 0; def->flags = flags; def->section = section; *def_ptr = def; Q_enter_global_ref (def_ptr, name); return def; } void DEFUN_VOID (lang_process) { if (had_script == false) { parse_line (ldemul_get_script (), 1); } lang_reasonable_defaults (); current_target = default_target; lang_for_each_statement (ldlang_open_output); /* Open the output file */ /* For each output section statement, create a section in the output file */ lang_create_output_section_statements (); /* Create a dummy bfd for the script */ lang_init_script_file (); /* Add to the hash table all undefineds on the command line */ lang_place_undefineds (); /* Create a bfd for each input file */ current_target = default_target; lang_for_each_statement (open_input_bfds); common_section.userdata = (PTR) & common_section_userdata; /* Run through the contours of the script and attatch input sections to the correct output sections */ find_constructors (); map_input_to_output_sections (statement_list.head, (char *) NULL, (lang_output_section_statement_type *) NULL); /* Find any sections not attatched explicitly and handle them */ lang_place_orphans (); /* Size up the common data */ lang_common (); ldemul_before_allocation (); #if 0 had_relax = true; while (had_relax) { had_relax = false; lang_size_sections (statement_list.head, (lang_output_section_statement_type *) NULL, &(statement_list.head), 0, (bfd_vma) 0, true); /* FIXME. Until the code in relax is fixed so that it only reads in stuff once, we cant iterate since there is no way for the linker to know what has been patched and what hasn't */ break; } #endif /* Now run around and relax if we can */ if (command_line.relax) { /* First time round is a trial run to get the 'worst case' addresses of the objects if there was no relaxing */ lang_size_sections (statement_list.head, (lang_output_section_statement_type *) NULL, &(statement_list.head), 0, (bfd_vma) 0, false); /* Move the global symbols around so the second pass of relaxing can see them */ lang_relocate_globals (); reset_memory_regions (); /* Do all the assignments, now that we know the final restingplaces of all the symbols */ lang_do_assignments (statement_list.head, abs_output_section, 0, (bfd_vma) 0); /* Perform another relax pass - this time we know where the globals are, so can make better guess */ lang_size_sections (statement_list.head, (lang_output_section_statement_type *) NULL, &(statement_list.head), 0, (bfd_vma) 0, true); } else { /* Size up the sections */ lang_size_sections (statement_list.head, abs_output_section, &(statement_list.head), 0, (bfd_vma) 0, false); } /* See if anything special should be done now we know how big everything is */ ldemul_after_allocation (); /* Do all the assignments, now that we know the final restingplaces of all the symbols */ lang_do_assignments (statement_list.head, abs_output_section, 0, (bfd_vma) 0); /* Move the global symbols around */ lang_relocate_globals (); /* Make sure that we're not mixing architectures */ lang_check (); /* Final stuffs */ lang_finish (); } /* EXPORTED TO YACC */ void DEFUN (lang_add_wild, (section_name, filename), CONST char *CONST section_name AND CONST char *CONST filename) { lang_wild_statement_type *new = new_stat (lang_wild_statement, stat_ptr); if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0) { placed_commons = true; } if (filename != (char *) NULL) { lang_has_input_file = true; } new->section_name = section_name; new->filename = filename; lang_list_init (&new->children); } void DEFUN (lang_section_start, (name, address), CONST char *name AND etree_type * address) { lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr); ad->section_name = name; ad->address = address; } void DEFUN (lang_add_entry, (name), CONST char *name) { entry_symbol = name; } void DEFUN (lang_add_target, (name), CONST char *name) { lang_target_statement_type *new = new_stat (lang_target_statement, stat_ptr); new->target = name; } void DEFUN (lang_add_map, (name), CONST char *name) { while (*name) { switch (*name) { case 'F': map_option_f = true; break; } name++; } } void DEFUN (lang_add_fill, (exp), int exp) { lang_fill_statement_type *new = new_stat (lang_fill_statement, stat_ptr); new->fill = exp; } void DEFUN (lang_add_data, (type, exp), int type AND union etree_union *exp) { lang_data_statement_type *new = new_stat (lang_data_statement, stat_ptr); new->exp = exp; new->type = type; } void DEFUN (lang_add_assignment, (exp), etree_type * exp) { lang_assignment_statement_type *new = new_stat (lang_assignment_statement, stat_ptr); new->exp = exp; } void DEFUN (lang_add_attribute, (attribute), enum statement_enum attribute) { new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); } void DEFUN (lang_startup, (name), CONST char *name) { if (startup_file != (char *) NULL) { einfo ("%P%FMultiple STARTUP files\n"); } first_file->filename = name; first_file->local_sym_name = name; startup_file = name; } void DEFUN (lang_float, (maybe), boolean maybe) { lang_float_flag = maybe; } void DEFUN (lang_leave_output_section_statement, (fill, memspec), bfd_vma fill AND CONST char *memspec) { current_section->fill = fill; current_section->region = lang_memory_region_lookup (memspec); stat_ptr = &statement_list; /* We remember if we are closing a .data section, since we use it to store constructors in */ if (strcmp (current_section->name, ".data") == 0) { end_of_data_section_statement_list = statement_list; } } /* Create an absolute symbol with the given name with the value of the address of first byte of the section named. If the symbol already exists, then do nothing. */ void DEFUN (lang_abs_symbol_at_beginning_of, (section, name), CONST char *section AND CONST char *name) { if (ldsym_undefined (name)) { asection *s = bfd_get_section_by_name (output_bfd, section); asymbol *def = create_symbol (name, BSF_GLOBAL | BSF_EXPORT, &bfd_abs_section); if (s != (asection *) NULL) { def->value = s->vma; } else { def->value = 0; } } } /* Create an absolute symbol with the given name with the value of the address of the first byte after the end of the section named. If the symbol already exists, then do nothing. */ void DEFUN (lang_abs_symbol_at_end_of, (section, name), CONST char *section AND CONST char *name) { if (ldsym_undefined (name)) { asection *s = bfd_get_section_by_name (output_bfd, section); /* Add a symbol called _end */ asymbol *def = create_symbol (name, BSF_GLOBAL | BSF_EXPORT, &bfd_abs_section); if (s != (asection *) NULL) { def->value = s->vma + s->_raw_size; } else { def->value = 0; } } } void DEFUN (lang_statement_append, (list, element, field), lang_statement_list_type * list AND lang_statement_union_type * element AND lang_statement_union_type ** field) { *(list->tail) = element; list->tail = field; } /* Set the output format type */ void DEFUN (lang_add_output_format, (format), CONST char *format) { output_target = format; }