/* Linker command language support.
- Copyright 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
+ 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)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GLD is distributed in the hope that it will be useful,
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. */
+along with GLD; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
+#include "libiberty.h"
+#include "obstack.h"
+#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
-#include "ldsym.h"
#include "ldgram.h"
-#include "ldwarn.h"
-#include "ldlang.h"
#include "ldexp.h"
+#include "ldlang.h"
#include "ldemul.h"
#include "ldlex.h"
#include "ldmisc.h"
-#include "ldindr.h"
#include "ldctor.h"
+#include "ldfile.h"
+#include "fnmatch.h"
+#include "demangle.h"
+
+#include <ctype.h>
+
/* FORWARDS */
-static void print_statements PARAMS ((void));
-static void print_statement PARAMS ((lang_statement_union_type *,
- lang_output_section_statement_type *));
static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
size_t,
lang_statement_list_type*));
/* LOCALS */
static struct obstack stat_obstack;
-#define obstack_chunk_alloc ldmalloc
+#define obstack_chunk_alloc xmalloc
#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 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 section_userdata_type common_section_userdata;
static lang_statement_list_type statement_list;
+static struct lang_phdr *lang_phdr_list;
+
+static void lang_for_each_statement_worker
+ PARAMS ((void (*func) (lang_statement_union_type *),
+ lang_statement_union_type *s));
+static lang_input_statement_type *new_afile
+ PARAMS ((const char *name, lang_input_file_enum_type file_type,
+ const char *target, boolean add_to_list));
+static void init_os PARAMS ((lang_output_section_statement_type *s));
+static void exp_init_os PARAMS ((etree_type *));
+static void section_already_linked PARAMS ((bfd *, asection *, PTR));
+static boolean wildcardp PARAMS ((const char *));
+static lang_statement_union_type *wild_sort
+ PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
+ asection *));
+static void wild_section PARAMS ((lang_wild_statement_type *ptr,
+ const char *section,
+ lang_input_statement_type *file,
+ lang_output_section_statement_type *output));
+static lang_input_statement_type *lookup_name PARAMS ((const char *name));
+static void load_symbols PARAMS ((lang_input_statement_type *entry,
+ lang_statement_list_type *));
+static void wild_file PARAMS ((lang_wild_statement_type *, const char *,
+ lang_input_statement_type *,
+ lang_output_section_statement_type *));
+static void wild PARAMS ((lang_wild_statement_type *s,
+ const char *section, const char *file,
+ const char *target,
+ lang_output_section_statement_type *output));
+static bfd *open_output PARAMS ((const char *name));
+static void ldlang_open_output PARAMS ((lang_statement_union_type *statement));
+static void open_input_bfds
+ PARAMS ((lang_statement_union_type *statement, boolean));
+static void lang_reasonable_defaults PARAMS ((void));
+static void lang_place_undefineds PARAMS ((void));
+static void map_input_to_output_sections
+ PARAMS ((lang_statement_union_type *s,
+ const char *target,
+ lang_output_section_statement_type *output_section_statement));
+static void print_output_section_statement
+ PARAMS ((lang_output_section_statement_type *output_section_statement));
+static void print_assignment
+ PARAMS ((lang_assignment_statement_type *assignment,
+ lang_output_section_statement_type *output_section));
+static void print_input_statement PARAMS ((lang_input_statement_type *statm));
+static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
+static void print_input_section PARAMS ((lang_input_section_type *in));
+static void print_fill_statement PARAMS ((lang_fill_statement_type *fill));
+static void print_data_statement PARAMS ((lang_data_statement_type *data));
+static void print_address_statement PARAMS ((lang_address_statement_type *));
+static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc));
+static void print_padding_statement PARAMS ((lang_padding_statement_type *s));
+static void print_wild_statement
+ PARAMS ((lang_wild_statement_type *w,
+ lang_output_section_statement_type *os));
+static void print_group
+ PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *));
+static void print_statement PARAMS ((lang_statement_union_type *s,
+ lang_output_section_statement_type *os));
+static void print_statement_list PARAMS ((lang_statement_union_type *s,
+ lang_output_section_statement_type *os));
+static void print_statements PARAMS ((void));
+static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr,
+ fill_type fill, unsigned int power,
+ asection *output_section_statement,
+ bfd_vma dot));
+static bfd_vma size_input_section
+ PARAMS ((lang_statement_union_type **this_ptr,
+ lang_output_section_statement_type *output_section_statement,
+ fill_type fill, bfd_vma dot, boolean relax));
+static void lang_finish PARAMS ((void));
+static void ignore_bfd_errors PARAMS ((const char *, ...));
+static void lang_check PARAMS ((void));
+static void lang_common PARAMS ((void));
+static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
+static void lang_place_orphans PARAMS ((void));
+static int topower PARAMS ((int));
+static void lang_set_startof PARAMS ((void));
+static void reset_memory_regions PARAMS ((void));
+static void lang_record_phdrs PARAMS ((void));
+static void lang_gc_wild_section
+ PARAMS ((lang_wild_statement_type *, const char *,
+ lang_input_statement_type *));
+static void lang_gc_wild_file
+ PARAMS ((lang_wild_statement_type *, const char *,
+ lang_input_statement_type *));
+static void lang_gc_wild
+ PARAMS ((lang_wild_statement_type *, const char *, const char *));
+static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
+static void lang_gc_sections PARAMS ((void));
+static void lang_do_version_exports_section PARAMS ((void));
+static void lang_check_section_addresses PARAMS ((void));
+
/* 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;
+lang_statement_list_type file_chain = { 0 };
+const char *entry_symbol = NULL;
+boolean entry_from_cmdline;
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;
-extern int g_switch_value;
-
+boolean delete_output_file_on_failure = false;
+struct lang_nocrossrefs *nocrossref_list;
etree_type *base; /* Relocation base - or null */
-#ifdef __STDC__
+#if defined(__STDC__) || defined(ALMOST_STDC)
#define cat(a,b) a##b
#else
#define cat(a,b) a/**/b
#define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
-void lang_add_data PARAMS ((int type, union etree_union * exp));
+#define SECTION_NAME_MAP_LENGTH (16)
PTR
stat_alloc (size)
{
return obstack_alloc (&stat_obstack, size);
}
-static void
-print_size (value)
- size_t value;
-{
- fprintf (config.map_file, "%5x", (unsigned) value);
-}
-static void
-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
-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
static void
lang_for_each_statement_worker (func, s)
- void (*func) ();
+ void (*func) PARAMS ((lang_statement_union_type *));
lang_statement_union_type *s;
{
for (; s != (lang_statement_union_type *) NULL; s = s->next)
(func,
s->wild_statement.children.head);
break;
+ case lang_group_statement_enum:
+ lang_for_each_statement_worker (func,
+ s->group_statement.children.head);
+ break;
case lang_data_statement_enum:
+ case lang_reloc_statement_enum:
case lang_object_symbols_statement_enum:
case lang_output_statement_enum:
case lang_target_statement_enum:
case lang_assignment_statement_enum:
case lang_padding_statement_enum:
case lang_address_statement_enum:
+ case lang_fill_statement_enum:
break;
default:
FAIL ();
void
lang_for_each_statement (func)
- void (*func) ();
+ void (*func) PARAMS ((lang_statement_union_type *));
{
lang_for_each_statement_worker (func,
statement_list.head);
*/
static lang_input_statement_type *
-new_afile (name, file_type, target)
- CONST char *CONST name;
- CONST lang_input_file_enum_type file_type;
- CONST char *CONST target;
+new_afile (name, file_type, target, add_to_list)
+ CONST char *name;
+ lang_input_file_enum_type file_type;
+ CONST char *target;
+ boolean add_to_list;
{
+ lang_input_statement_type *p;
- lang_input_statement_type *p = new_stat (lang_input_statement,
- stat_ptr);
+ if (add_to_list)
+ p = new_stat (lang_input_statement, stat_ptr);
+ else
+ {
+ p = ((lang_input_statement_type *)
+ stat_alloc (sizeof (lang_input_statement_type)));
+ p->header.next = NULL;
+ }
lang_has_input_file = true;
p->target = target;
- p->complained = false;
switch (file_type)
{
case lang_input_file_is_symbols_only_enum:
p->is_archive = true;
p->filename = name;
p->real = true;
- p->local_sym_name = concat ("-l", name, "");
+ p->local_sym_name = concat ("-l", name, (const char *) NULL);
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 = false;
+ p->local_sym_name = name;
+ p->just_syms_flag = false;
+ p->search_dirs_flag = true;
+ break;
+ case lang_input_file_is_search_file_enum:
p->filename = name;
p->is_archive = false;
p->real = true;
default:
FAIL ();
}
+ p->the_bfd = (bfd *) NULL;
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;
+ p->dynamic = config.dynamic_link;
+ p->whole_archive = whole_archive;
+ p->loaded = false;
lang_statement_append (&input_file_chain,
(lang_statement_union_type *) p,
&p->next_real_file);
lang_input_file_enum_type file_type;
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);
-}
-
-void
-lang_add_keepsyms_file (filename)
- CONST char *filename;
-{
- extern strip_symbols_type strip_symbols;
- if (keepsyms_file != 0)
- info ("%X%P error: duplicated keep-symbols-file value\n");
- keepsyms_file = filename;
- if (strip_symbols != STRIP_NONE)
- info ("%P `-keep-only-symbols-file' overrides `-s' and `-S'\n");
- strip_symbols = STRIP_SOME;
+ return new_afile (name, file_type, target, true);
}
/* Build enough state so that the parser can build its tree */
(char *) NULL);
abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
- abs_output_section->bfd_section = &bfd_abs_section;
+ abs_output_section->bfd_section = bfd_abs_section_ptr;
}
lang_memory_region_lookup (name)
CONST char *CONST name;
{
-
- lang_memory_region_type *p = lang_memory_region_list;
+ lang_memory_region_type *p;
for (p = lang_memory_region_list;
p != (lang_memory_region_type *) NULL;
return p;
}
}
+
+#if 0
+ /* This code used to always use the first region in the list as the
+ default region. I changed it to instead use a region
+ encompassing all of memory as the default region. This permits
+ NOLOAD sections to work reasonably without requiring a region.
+ People should specify what region they mean, if they really want
+ a region. */
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;
}
}
+#endif
+
{
lang_memory_region_type *new =
- (lang_memory_region_type *) stat_alloc ((bfd_size_type) (sizeof (lang_memory_region_type)));
+ (lang_memory_region_type *) stat_alloc (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->flags = 0;
+ new->not_flags = 0;
new->length = ~(bfd_size_type)0;
new->current = 0;
new->had_full_message = false;
}
+lang_memory_region_type *
+lang_memory_default (section)
+ asection *section;
+{
+ lang_memory_region_type *p;
+
+ flagword sec_flags = section->flags;
+
+ /* Override SEC_DATA to mean a writable section. */
+ if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
+ sec_flags |= SEC_DATA;
+
+ for (p = lang_memory_region_list;
+ p != (lang_memory_region_type *) NULL;
+ p = p->next)
+ {
+ if ((p->flags & sec_flags) != 0
+ && (p->not_flags & sec_flags) == 0)
+ {
+ return p;
+ }
+ }
+ return lang_memory_region_lookup ("*default*");
+}
+
lang_output_section_statement_type *
lang_output_section_find (name)
CONST char *CONST name;
lookup->next = (lang_statement_union_type *) NULL;
lookup->bfd_section = (asection *) NULL;
lookup->processed = false;
- lookup->loadable = 1;
+ lookup->sectype = normal_section;
lookup->addr_tree = (etree_type *) NULL;
lang_list_init (&lookup->children);
lookup->subsection_alignment = -1;
lookup->section_alignment = -1;
lookup->load_base = (union etree_union *) NULL;
+ lookup->phdrs = NULL;
lang_statement_append (&lang_output_section_statement,
(lang_statement_union_type *) lookup,
return lookup;
}
-/*ARGSUSED*/
static void
-print_flags (ignore_flags)
- int *ignore_flags;
+lang_map_flags (flag)
+ flagword flag;
{
- 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, ")");
+ if (flag & SEC_ALLOC)
+ minfo ("a");
+
+ if (flag & SEC_CODE)
+ minfo ("x");
+
+ if (flag & SEC_READONLY)
+ minfo ("r");
+
+ if (flag & SEC_DATA)
+ minfo ("w");
+
+ if (flag & SEC_LOAD)
+ minfo ("l");
}
void
{
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");
+ minfo (_("\nMemory Configuration\n\n"));
+ fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
+ _("Name"), _("Origin"), _("Length"), _("Attributes"));
-#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 ((bfd_vma)m->length);
- print_space ();
- print_address ((bfd_vma)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");
+ char buf[100];
+ int len;
- print_statements ();
+ fprintf (config.map_file, "%-16s ", m->name);
+
+ sprintf_vma (buf, m->origin);
+ minfo ("0x%s ", buf);
+ len = strlen (buf);
+ while (len < 16)
+ {
+ print_space ();
+ ++len;
+ }
+
+ minfo ("0x%V", m->length);
+ if (m->flags || m->not_flags)
+ {
+#ifndef BFD64
+ minfo (" ");
+#endif
+ if (m->flags)
+ {
+ print_space ();
+ lang_map_flags (m->flags);
+ }
+
+ if (m->not_flags)
+ {
+ minfo (" !");
+ lang_map_flags (m->not_flags);
+ }
+ }
+ print_nl ();
+ }
+
+ fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
+
+ print_statements ();
}
-/*
- *
- */
+/* Initialize an output section. */
+
static void
init_os (s)
- lang_output_section_statement_type * 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)));
+ section_userdata_type *new;
+
+ if (s->bfd_section != NULL)
+ return;
+
+ if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
+ einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME);
+
+ new = ((section_userdata_type *)
+ stat_alloc (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",
+ 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;
+ /* If there is a base address, make sure that any sections it might
+ mention are initialized. */
+ if (s->addr_tree != NULL)
+ exp_init_os (s->addr_tree);
}
-/***********************************************************************
- 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.
-
-*/
+/* Make sure that all output sections mentioned in an expression are
+ initialized. */
static void
-wild_doit (ptr, section, output, file)
- lang_statement_list_type * ptr;
- asection * section;
- lang_output_section_statement_type * output;
- lang_input_statement_type * file;
+exp_init_os (exp)
+ etree_type *exp;
{
- if (output->bfd_section == (asection *) NULL)
- {
- init_os (output);
- /* Initialize the vma and size to the existing section. This will
- be overriden in lang_size_sections unless SEC_NEVER_LOAD gets
- set. */
- if (section != (asection *) NULL)
+ switch (exp->type.node_class)
{
- bfd_set_section_vma (0, output->bfd_section,
- bfd_section_vma (0, section));
- output->bfd_section->_raw_size = section->_raw_size;
- }
- }
+ case etree_assign:
+ exp_init_os (exp->assign.src);
+ break;
- 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);
+ case etree_binary:
+ exp_init_os (exp->binary.lhs);
+ exp_init_os (exp->binary.rhs);
+ break;
+
+ case etree_trinary:
+ exp_init_os (exp->trinary.cond);
+ exp_init_os (exp->trinary.lhs);
+ exp_init_os (exp->trinary.rhs);
+ break;
- new->section = section;
- new->ifile = file;
- section->output_section = output->bfd_section;
+ case etree_unary:
+ exp_init_os (exp->unary.child);
+ break;
- /* Be selective about what the output section inherits from the
- input section */
+ case etree_name:
+ switch (exp->type.node_code)
+ {
+ case ADDR:
+ case LOADADDR:
+ case SIZEOF:
+ {
+ lang_output_section_statement_type *os;
- if ((section->flags & SEC_SHARED_LIBRARY) != 0)
- section->output_section->flags |= section->flags;
- else
- section->output_section->flags |= section->flags & ~SEC_NEVER_LOAD;
+ os = lang_output_section_find (exp->name.name);
+ if (os != NULL && os->bfd_section == NULL)
+ init_os (os);
+ }
+ }
+ break;
- if (!output->loadable)
- {
- /* Turn off load flag */
- output->bfd_section->flags &= ~SEC_LOAD;
- output->bfd_section->flags |= SEC_NEVER_LOAD;
- }
- if (section->alignment_power > output->bfd_section->alignment_power)
- {
- output->bfd_section->alignment_power = section->alignment_power;
- }
- /* If supplied an aligmnet, then force it */
- if (output->section_alignment != -1)
- {
- output->bfd_section->alignment_power = output->section_alignment;
+ default:
+ break;
}
- }
}
-static asection *
-our_bfd_get_section_by_name (abfd, section)
- bfd * abfd;
- CONST char *section;
-{
- return bfd_get_section_by_name (abfd, section);
-}
+/* Sections marked with the SEC_LINK_ONCE flag should only be linked
+ once into the output. This routine checks each sections, and
+ arranges to discard it if a section of the same name has already
+ been linked. This code assumes that all relevant sections have the
+ SEC_LINK_ONCE flag set; that is, it does not depend solely upon the
+ section name. This is called via bfd_map_over_sections. */
+/*ARGSUSED*/
static void
-wild_section (ptr, section, file, output)
- lang_wild_statement_type * ptr;
- CONST char *section;
- lang_input_statement_type * file;
- lang_output_section_statement_type * output;
+section_already_linked (abfd, sec, data)
+ bfd *abfd;
+ asection *sec;
+ PTR data;
{
- asection *s;
+ lang_input_statement_type *entry = (lang_input_statement_type *) data;
+ struct sec_link_once
+ {
+ struct sec_link_once *next;
+ asection *sec;
+ };
+ static struct sec_link_once *sec_link_once_list;
+ flagword flags;
+ const char *name;
+ struct sec_link_once *l;
+
+ /* If we are only reading symbols from this object, then we want to
+ discard all sections. */
+ if (entry->just_syms_flag)
+ {
+ sec->output_section = bfd_abs_section_ptr;
+ sec->output_offset = sec->vma;
+ return;
+ }
- if (file->just_syms_flag == false)
+ flags = bfd_get_section_flags (abfd, sec);
+
+ if ((flags & SEC_LINK_ONCE) == 0)
+ return;
+
+ name = bfd_get_section_name (abfd, sec);
+
+ for (l = sec_link_once_list; l != NULL; l = l->next)
{
- if (section == (char *) NULL)
+ if (strcmp (name, bfd_get_section_name (l->sec->owner, l->sec)) == 0)
{
- /* Do the creation to all sections in the file */
- for (s = file->the_bfd->sections; s != (asection *) NULL; s = s->next)
- {
- /* except for bss */
- if ((s->flags & SEC_IS_COMMON) == 0)
+ /* The section has already been linked. See if we should
+ issue a warning. */
+ switch (flags & SEC_LINK_DUPLICATES)
{
- wild_doit (&ptr->children, s, output, file);
+ default:
+ abort ();
+
+ case SEC_LINK_DUPLICATES_DISCARD:
+ break;
+
+ case SEC_LINK_DUPLICATES_ONE_ONLY:
+ einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"),
+ abfd, name);
+ break;
+
+ case SEC_LINK_DUPLICATES_SAME_CONTENTS:
+ /* FIXME: We should really dig out the contents of both
+ sections and memcmp them. The COFF/PE spec says that
+ the Microsoft linker does not implement this
+ correctly, so I'm not going to bother doing it
+ either. */
+ /* Fall through. */
+ case SEC_LINK_DUPLICATES_SAME_SIZE:
+ if (bfd_section_size (abfd, sec)
+ != bfd_section_size (l->sec->owner, l->sec))
+ einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"),
+ abfd, name);
+ break;
}
- }
- }
- 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);
+
+ /* Set the output_section field so that wild_doit does not
+ create a lang_input_section structure for this section. */
+ sec->output_section = bfd_abs_section_ptr;
+
+ return;
}
}
+
+ /* This is the first section with this name. Record it. */
+
+ l = (struct sec_link_once *) xmalloc (sizeof *l);
+ l->sec = sec;
+ l->next = sec_link_once_list;
+ sec_link_once_list = l;
+}
+\f
+/* 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). */
+
+/* Return true if the PATTERN argument is a wildcard pattern.
+ Although backslashes are treated specially if a pattern contains
+ wildcards, we do not consider the mere presence of a backslash to
+ be enough to cause the the pattern to be treated as a wildcard.
+ That lets us handle DOS filenames more naturally. */
+
+static boolean
+wildcardp (pattern)
+ const char *pattern;
+{
+ const char *s;
+
+ for (s = pattern; *s != '\0'; ++s)
+ if (*s == '?'
+ || *s == '*'
+ || *s == '[')
+ return true;
+ return false;
}
-/* 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.
+/* Add SECTION to the output section OUTPUT. Do this by creating a
+ lang_input_section statement which is placed at PTR. FILE is the
+ input file which holds SECTION. */
- 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 *
-lookup_name (name)
- CONST char *CONST name;
+void
+wild_doit (ptr, section, output, file)
+ lang_statement_list_type *ptr;
+ asection *section;
+ lang_output_section_statement_type *output;
+ lang_input_statement_type *file;
{
- lang_input_statement_type *search;
+ flagword flags;
+ boolean discard;
- 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)
+ flags = bfd_get_section_flags (section->owner, section);
+
+ discard = false;
+
+ /* If we are doing a final link, discard sections marked with
+ SEC_EXCLUDE. */
+ if (! link_info.relocateable
+ && (flags & SEC_EXCLUDE) != 0)
+ discard = true;
+
+ /* Discard input sections which are assigned to a section named
+ DISCARD_SECTION_NAME. */
+ if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
+ discard = true;
+
+ /* Discard debugging sections if we are stripping debugging
+ information. */
+ if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
+ && (flags & SEC_DEBUGGING) != 0)
+ discard = true;
+
+ if (discard)
{
- if (search->filename == (char *) NULL && name == (char *) NULL)
+ if (section->output_section == NULL)
{
- return search;
+ /* This prevents future calls from assigning this section. */
+ section->output_section = bfd_abs_section_ptr;
}
- if (search->filename != (char *) NULL && name != (char *) NULL)
+ return;
+ }
+
+ if (section->output_section == NULL)
+ {
+ boolean first;
+ lang_input_section_type *new;
+ flagword flags;
+
+ if (output->bfd_section == NULL)
{
- if (strcmp (search->filename, name) == 0)
- {
- ldmain_open_file_read_symbol (search);
- return search;
- }
+ init_os (output);
+ first = true;
}
- }
+ else
+ first = false;
- /* 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;
+ /* Add a section reference to the list */
+ new = new_stat (lang_input_section, ptr);
+ new->section = section;
+ new->ifile = file;
+ section->output_section = output->bfd_section;
-}
+ flags = section->flags;
-static void
-wild (s, section, file, target, output)
- lang_wild_statement_type * s;
- CONST char *CONST section;
- CONST char *CONST file;
- CONST char *CONST target;
- lang_output_section_statement_type * output;
-{
- lang_input_statement_type *f;
+ /* We don't copy the SEC_NEVER_LOAD flag from an input section
+ to an output section, because we want to be able to include a
+ SEC_NEVER_LOAD section in the middle of an otherwise loaded
+ section (I don't know why we want to do this, but we do).
+ build_link_order in ldwrite.c handles this case by turning
+ the embedded SEC_NEVER_LOAD section into a fill. */
- 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)
+ flags &= ~ SEC_NEVER_LOAD;
+
+ /* If final link, don't copy the SEC_LINK_ONCE flags, they've
+ already been processed. One reason to do this is that on pe
+ format targets, .text$foo sections go into .text and it's odd
+ to see .text with SEC_LINK_ONCE set. */
+
+ if (! link_info.relocateable)
+ flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
+
+ /* If this is not the first input section, and the SEC_READONLY
+ flag is not currently set, then don't set it just because the
+ input section has it set. */
+
+ if (! first && (section->output_section->flags & SEC_READONLY) == 0)
+ flags &= ~ SEC_READONLY;
+
+ section->output_section->flags |= flags;
+
+ /* If SEC_READONLY is not set in the input section, then clear
+ it from the output section. */
+ if ((section->flags & SEC_READONLY) == 0)
+ section->output_section->flags &= ~SEC_READONLY;
+
+ switch (output->sectype)
{
- wild_section (s, section, f, output);
+ case normal_section:
+ break;
+ case dsect_section:
+ case copy_section:
+ case info_section:
+ case overlay_section:
+ output->bfd_section->flags &= ~SEC_ALLOC;
+ break;
+ case noload_section:
+ output->bfd_section->flags &= ~SEC_LOAD;
+ output->bfd_section->flags |= SEC_NEVER_LOAD;
+ break;
}
- /* Once more for the script file */
- wild_section(s, section, script_file, 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;
+
+ if (section->alignment_power > output->bfd_section->alignment_power)
+ output->bfd_section->alignment_power = section->alignment_power;
+
+ /* If supplied an aligment, then force it. */
+ if (output->section_alignment != -1)
+ output->bfd_section->alignment_power = output->section_alignment;
}
}
-/*
- read in all the files
- */
-static bfd *
-open_output (name)
- CONST char *CONST name;
-{
- extern unsigned long ldfile_output_machine;
- extern enum bfd_architecture ldfile_output_architecture;
+/* Handle wildcard sorting. This returns the lang_input_section which
+ should follow the one we are going to create for SECTION and FILE,
+ based on the sorting requirements of WILD. It returns NULL if the
+ new section should just go at the end of the current list. */
- extern CONST char *output_filename;
- bfd *output;
+static lang_statement_union_type *
+wild_sort (wild, file, section)
+ lang_wild_statement_type *wild;
+ lang_input_statement_type *file;
+ asection *section;
+{
+ const char *section_name;
+ lang_statement_union_type *l;
- 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 (! wild->filenames_sorted && ! wild->sections_sorted)
+ return NULL;
- if (output == (bfd *) NULL)
+ section_name = bfd_get_section_name (file->the_bfd, section);
+ for (l = wild->children.head; l != NULL; l = l->next)
{
- if (bfd_error == invalid_target)
- {
- einfo ("%P%F target %s not found\n", output_target);
- }
- einfo ("%P%F problem opening output file %s, %E\n", name);
- }
+ lang_input_section_type *ls;
- /* output->flags |= D_PAGED;*/
+ if (l->header.type != lang_input_section_enum)
+ continue;
+ ls = &l->input_section;
- bfd_set_format (output, bfd_object);
- bfd_set_arch_mach (output,
- ldfile_output_architecture,
- ldfile_output_machine);
- bfd_set_gp_size (output, g_switch_value);
- return output;
-}
+ /* Sorting by filename takes precedence over sorting by section
+ name. */
+
+ if (wild->filenames_sorted)
+ {
+ const char *fn, *ln;
+ boolean fa, la;
+ int i;
+
+ /* The PE support for the .idata section as generated by
+ dlltool assumes that files will be sorted by the name of
+ the archive and then the name of the file within the
+ archive. */
+
+ if (file->the_bfd != NULL
+ && bfd_my_archive (file->the_bfd) != NULL)
+ {
+ fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
+ fa = true;
+ }
+ else
+ {
+ fn = file->filename;
+ fa = false;
+ }
+
+ if (ls->ifile->the_bfd != NULL
+ && bfd_my_archive (ls->ifile->the_bfd) != NULL)
+ {
+ ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
+ la = true;
+ }
+ else
+ {
+ ln = ls->ifile->filename;
+ la = false;
+ }
+
+ i = strcmp (fn, ln);
+ if (i > 0)
+ continue;
+ else if (i < 0)
+ break;
+
+ if (fa || la)
+ {
+ if (fa)
+ fn = file->filename;
+ if (la)
+ ln = ls->ifile->filename;
+
+ i = strcmp (fn, ln);
+ if (i > 0)
+ continue;
+ else if (i < 0)
+ break;
+ }
+ }
+
+ /* Here either the files are not sorted by name, or we are
+ looking at the sections for this file. */
+
+ if (wild->sections_sorted)
+ {
+ if (strcmp (section_name,
+ bfd_get_section_name (ls->ifile->the_bfd,
+ ls->section))
+ < 0)
+ break;
+ }
+ }
+
+ return l;
+}
+
+/* Expand a wild statement for a particular FILE. SECTION may be
+ NULL, in which case it is a wild card. */
+
+static void
+wild_section (ptr, section, file, output)
+ lang_wild_statement_type *ptr;
+ const char *section;
+ lang_input_statement_type *file;
+ lang_output_section_statement_type *output;
+{
+
+ /* Don't process sections from files which were excluded. */
+ if (ptr->exclude_filename != NULL)
+ {
+ boolean match;
+
+ if (wildcardp (ptr->exclude_filename))
+ match = fnmatch (ptr->exclude_filename, file->filename, 0) == 0 ? true : false;
+ else
+ match = strcmp (ptr->exclude_filename, file->filename) == 0 ? true : false;
+
+ if (match)
+ return;
+ }
+
+ if (file->just_syms_flag == false)
+ {
+ register asection *s;
+ boolean wildcard;
+
+ if (section == NULL)
+ wildcard = false;
+ else
+ wildcard = wildcardp (section);
+
+ for (s = file->the_bfd->sections; s != NULL; s = s->next)
+ {
+ boolean match;
+
+ /* Attach all sections named SECTION. If SECTION is NULL,
+ then attach all sections.
+
+ Previously, if SECTION was NULL, this code did not call
+ wild_doit if the SEC_IS_COMMON flag was set for the
+ section. I did not understand that, and I took it out.
+ --ian@cygnus.com. */
+
+ if (section == NULL)
+ match = true;
+ else
+ {
+ const char *name;
+
+ name = bfd_get_section_name (file->the_bfd, s);
+ if (wildcard)
+ match = fnmatch (section, name, 0) == 0 ? true : false;
+ else
+ match = strcmp (section, name) == 0 ? true : false;
+ }
+
+ if (match)
+ {
+ lang_statement_union_type *before;
+
+ /* If the wild pattern was marked KEEP, the member sections
+ should be as well. */
+ if (ptr->keep_sections)
+ s->flags |= SEC_KEEP;
+
+ before = wild_sort (ptr, file, s);
+
+ /* Here BEFORE points to the lang_input_section which
+ should follow the one we are about to add. If BEFORE
+ is NULL, then the section should just go at the end
+ of the current list. */
+
+ if (before == NULL)
+ wild_doit (&ptr->children, s, output, file);
+ else
+ {
+ lang_statement_list_type list;
+ lang_statement_union_type **pp;
+
+ lang_list_init (&list);
+ wild_doit (&list, s, output, file);
+
+ /* If we are discarding the section, LIST.HEAD will
+ be NULL. */
+ if (list.head != NULL)
+ {
+ ASSERT (list.head->next == NULL);
+
+ for (pp = &ptr->children.head;
+ *pp != before;
+ pp = &(*pp)->next)
+ ASSERT (*pp != NULL);
+
+ list.head->next = *pp;
+ *pp = list.head;
+ }
+ }
+ }
+ }
+ }
+}
+
+/* This is 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. */
+
+static lang_input_statement_type *
+lookup_name (name)
+ const char *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
+ && strcmp (search->filename, name) == 0)
+ break;
+ }
+
+ if (search == (lang_input_statement_type *) NULL)
+ search = new_afile (name, lang_input_file_is_file_enum, default_target,
+ false);
+
+ /* If we have already added this file, or this file is not real
+ (FIXME: can that ever actually happen?) or the name is NULL
+ (FIXME: can that ever actually happen?) don't add this file. */
+ if (search->loaded
+ || ! search->real
+ || search->filename == (const char *) NULL)
+ return search;
+
+ load_symbols (search, (lang_statement_list_type *) NULL);
+
+ return search;
+}
+
+/* Get the symbols for an input file. */
+
+static void
+load_symbols (entry, place)
+ lang_input_statement_type *entry;
+ lang_statement_list_type *place;
+{
+ char **matching;
+
+ if (entry->loaded)
+ return;
+
+ ldfile_open_file (entry);
+
+ if (! bfd_check_format (entry->the_bfd, bfd_archive)
+ && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
+ {
+ bfd_error_type err;
+ lang_statement_list_type *hold;
+
+ err = bfd_get_error ();
+ if (err == bfd_error_file_ambiguously_recognized)
+ {
+ char **p;
+
+ einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
+ einfo (_("%B: matching formats:"), entry->the_bfd);
+ for (p = matching; *p != NULL; p++)
+ einfo (" %s", *p);
+ einfo ("%F\n");
+ }
+ else if (err != bfd_error_file_not_recognized
+ || place == NULL)
+ einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
+
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = NULL;
+
+ /* See if the emulation has some special knowledge. */
+
+ if (ldemul_unrecognized_file (entry))
+ return;
+
+ /* Try to interpret the file as a linker script. */
+
+ ldfile_open_command_file (entry->filename);
+
+ hold = stat_ptr;
+ stat_ptr = place;
+
+ ldfile_assumed_script = true;
+ parser_input = input_script;
+ yyparse ();
+ ldfile_assumed_script = false;
+
+ stat_ptr = hold;
+
+ return;
+ }
+
+ if (ldemul_recognized_file (entry))
+ return;
+
+ /* We don't call ldlang_add_file for an archive. Instead, the
+ add_symbols entry point will call ldlang_add_file, via the
+ add_archive_element callback, for each element of the archive
+ which is used. */
+ switch (bfd_get_format (entry->the_bfd))
+ {
+ default:
+ break;
+
+ case bfd_object:
+ ldlang_add_file (entry);
+ if (trace_files || trace_file_tries)
+ info_msg ("%I\n", entry);
+ break;
+
+ case bfd_archive:
+ if (entry->whole_archive)
+ {
+ bfd *member = bfd_openr_next_archived_file (entry->the_bfd,
+ (bfd *) NULL);
+ while (member != NULL)
+ {
+ if (! bfd_check_format (member, bfd_object))
+ einfo (_("%F%B: object %B in archive is not object\n"),
+ entry->the_bfd, member);
+ if (! ((*link_info.callbacks->add_archive_element)
+ (&link_info, member, "--whole-archive")))
+ abort ();
+ if (! bfd_link_add_symbols (member, &link_info))
+ einfo (_("%F%B: could not read symbols: %E\n"), member);
+ member = bfd_openr_next_archived_file (entry->the_bfd,
+ member);
+ }
+
+ entry->loaded = true;
+
+ return;
+ }
+ }
+
+ if (! bfd_link_add_symbols (entry->the_bfd, &link_info))
+ einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
+
+ entry->loaded = true;
+}
+
+/* Handle a wild statement for a single file F. */
+
+static void
+wild_file (s, section, f, output)
+ lang_wild_statement_type *s;
+ const char *section;
+ lang_input_statement_type *f;
+ lang_output_section_statement_type *output;
+{
+ if (f->the_bfd == NULL
+ || ! bfd_check_format (f->the_bfd, bfd_archive))
+ wild_section (s, section, f, output);
+ else
+ {
+ bfd *member;
+
+ /* This is an archive file. We must map each member of the
+ archive separately. */
+ member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
+ while (member != NULL)
+ {
+ /* When lookup_name is called, it will call the add_symbols
+ entry point for the archive. For each element of the
+ archive which is included, BFD will call ldlang_add_file,
+ which will set the usrdata field of the member to the
+ lang_input_statement. */
+ if (member->usrdata != NULL)
+ {
+ wild_section (s, section,
+ (lang_input_statement_type *) member->usrdata,
+ output);
+ }
+
+ member = bfd_openr_next_archived_file (f->the_bfd, member);
+ }
+ }
+}
+
+/* Handle a wild statement. SECTION or FILE or both may be NULL,
+ indicating that it is a wildcard. Separate lang_input_section
+ statements are created for each part of the expansion; they are
+ added after the wild statement S. OUTPUT is the output section. */
+
+static void
+wild (s, section, file, target, output)
+ lang_wild_statement_type *s;
+ const char *section;
+ const char *file;
+ const char *target;
+ 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_file (s, section, f, output);
+ }
+ }
+ else if (wildcardp (file))
+ {
+ for (f = (lang_input_statement_type *) file_chain.head;
+ f != (lang_input_statement_type *) NULL;
+ f = (lang_input_statement_type *) f->next)
+ {
+ if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
+ wild_file (s, section, f, output);
+ }
+ }
+ else
+ {
+ /* Perform the iteration over a single file */
+ f = lookup_name (file);
+ wild_file (s, section, f, output);
+ }
+
+ if (section != (char *) NULL
+ && strcmp (section, "COMMON") == 0
+ && default_common_section == NULL)
+ {
+ /* Remember the section that common is going to in case we later
+ get something which doesn't know where to put it. */
+ default_common_section = output;
+ }
+}
+
+/* Open the output file. */
+
+static bfd *
+open_output (name)
+ const char *name;
+{
+ 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);
+
+ if (output == (bfd *) NULL)
+ {
+ if (bfd_get_error () == bfd_error_invalid_target)
+ {
+ einfo (_("%P%F: target %s not found\n"), output_target);
+ }
+ einfo (_("%P%F: cannot open output file %s: %E\n"), name);
+ }
+
+ delete_output_file_on_failure = true;
+
+ /* output->flags |= D_PAGED;*/
+
+ if (! bfd_set_format (output, bfd_object))
+ einfo (_("%P%F:%s: can not make object file: %E\n"), name);
+ if (! bfd_set_arch_mach (output,
+ ldfile_output_architecture,
+ ldfile_output_machine))
+ einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
+
+ link_info.hash = bfd_link_hash_table_create (output);
+ if (link_info.hash == (struct bfd_link_hash_table *) NULL)
+ einfo (_("%P%F: can not create link hash table: %E\n"));
+
+ bfd_set_gp_size (output, g_switch_value);
+ return output;
+}
{
switch (statement->header.type)
{
- case lang_output_statement_enum:
+ case lang_output_statement_enum:
+ ASSERT (output_bfd == (bfd *) NULL);
output_bfd = open_output (statement->output_statement.name);
ldemul_set_output_arch ();
- if (config.magic_demand_paged && !config.relocateable_output)
+ if (config.magic_demand_paged && !link_info.relocateable)
output_bfd->flags |= D_PAGED;
else
output_bfd->flags &= ~D_PAGED;
output_bfd->flags |= WP_TEXT;
else
output_bfd->flags &= ~WP_TEXT;
+ if (link_info.traditional_format)
+ output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
+ else
+ output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
break;
case lang_target_statement_enum:
}
}
+/* Open all the input files. */
+
static void
-open_input_bfds (statement)
- lang_statement_union_type * statement;
+open_input_bfds (s, force)
+ lang_statement_union_type *s;
+ boolean force;
{
- switch (statement->header.type)
+ for (; s != (lang_statement_union_type *) NULL; s = s->next)
{
- 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)
+ switch (s->header.type)
{
- statement->input_statement.target = current_target;
- lookup_name (statement->input_statement.filename);
+ case lang_constructors_statement_enum:
+ open_input_bfds (constructor_list.head, force);
+ break;
+ case lang_output_section_statement_enum:
+ open_input_bfds (s->output_section_statement.children.head, force);
+ break;
+ case lang_wild_statement_enum:
+ /* Maybe we should load the file's symbols */
+ if (s->wild_statement.filename
+ && ! wildcardp (s->wild_statement.filename))
+ (void) lookup_name (s->wild_statement.filename);
+ open_input_bfds (s->wild_statement.children.head, force);
+ break;
+ case lang_group_statement_enum:
+ {
+ struct bfd_link_hash_entry *undefs;
+
+ /* We must continually search the entries in the group
+ until no new symbols are added to the list of undefined
+ symbols. */
+
+ do
+ {
+ undefs = link_info.hash->undefs_tail;
+ open_input_bfds (s->group_statement.children.head, true);
+ }
+ while (undefs != link_info.hash->undefs_tail);
+ }
+ break;
+ case lang_target_statement_enum:
+ current_target = s->target_statement.target;
+ break;
+ case lang_input_statement_enum:
+ if (s->input_statement.real == true)
+ {
+ lang_statement_list_type add;
+
+ s->input_statement.target = current_target;
+
+ /* If we are being called from within a group, and this
+ is an archive which has already been searched, then
+ force it to be researched. */
+ if (force
+ && s->input_statement.loaded
+ && bfd_check_format (s->input_statement.the_bfd,
+ bfd_archive))
+ s->input_statement.loaded = false;
+
+ lang_list_init (&add);
+
+ load_symbols (&s->input_statement, &add);
+
+ if (add.head != NULL)
+ {
+ *add.tail = s->next;
+ s->next = add.head;
+ }
+ }
+ break;
+ default:
+ break;
}
- break;
- default:
- break;
}
}
static void
lang_reasonable_defaults ()
{
-
-
-
#if 0
lang_output_section_statement_lookup (".text");
lang_output_section_statement_lookup (".data");
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)));
+ ((ldlang_undef_chain_list_type *)
+ stat_alloc (sizeof (ldlang_undef_chain_list_type)));
new->next = ldlang_undef_chain_list_head;
ldlang_undef_chain_list_head = new;
static void
lang_place_undefineds ()
{
- ldlang_undef_chain_list_type *ptr = ldlang_undef_chain_list_head;
+ ldlang_undef_chain_list_type *ptr;
- while (ptr != (ldlang_undef_chain_list_type *) NULL)
+ for (ptr = ldlang_undef_chain_list_head;
+ ptr != (ldlang_undef_chain_list_type *) NULL;
+ ptr = ptr->next)
{
- asymbol *def;
- asymbol **def_ptr = (asymbol **) stat_alloc ((bfd_size_type) (sizeof (asymbol **)));
+ struct bfd_link_hash_entry *h;
- 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;
+ h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
+ if (h == (struct bfd_link_hash_entry *) NULL)
+ einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
+ if (h->type == bfd_link_hash_new)
+ {
+ h->type = bfd_link_hash_undefined;
+ h->u.undef.abfd = NULL;
+ bfd_link_add_undef (link_info.hash, h);
+ }
}
}
-/* Copy important data from out internal form to the bfd way. Also
- create a section for the dummy file
- */
-
-static 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
-lang_init_script_file ()
-{
- script_file = lang_add_input_file ("command line",
- lang_input_file_is_fake_enum,
- (char *) NULL);
- script_file->the_bfd = bfd_create ("command line", output_bfd);
- script_file->symbol_count = 0;
- script_file->the_bfd->sections = 0;
-
- /* The user data of a bfd points to the input statement attatched */
- script_file->the_bfd->usrdata = (void *)script_file;
- script_file->common_section =
- bfd_make_section(script_file->the_bfd,"COMMON");
-
- 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
map_input_to_output_sections (s, target, output_section_statement)
case lang_target_statement_enum:
target = s->target_statement.target;
break;
+ case lang_group_statement_enum:
+ map_input_to_output_sections (s->group_statement.children.head,
+ target,
+ output_section_statement);
+ 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_reloc_statement_enum:
case lang_padding_statement_enum:
+ case lang_input_statement_enum:
+ if (output_section_statement != NULL
+ && output_section_statement->bfd_section == NULL)
+ init_os (output_section_statement);
+ break;
+ case lang_assignment_statement_enum:
+ if (output_section_statement != NULL
+ && output_section_statement->bfd_section == NULL)
+ init_os (output_section_statement);
+
+ /* Make sure that any sections mentioned in the assignment
+ are initialized. */
+ exp_init_os (s->assignment_statement.exp);
break;
case lang_afile_asection_pair_statement_enum:
FAIL ();
/* Mark the specified section with the supplied address */
{
lang_output_section_statement_type *os =
- lang_output_section_statement_lookup
- (s->address_statement.section_name);
+ lang_output_section_statement_lookup
+ (s->address_statement.section_name);
+ if (os->bfd_section == NULL)
+ init_os (os);
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
print_output_section_statement (output_section_statement)
lang_output_section_statement_type * output_section_statement;
{
asection *section = output_section_statement->bfd_section;
+ int len;
- print_nl ();
- print_section (output_section_statement->name);
+ if (output_section_statement != abs_output_section)
+ {
+ minfo ("\n%s", output_section_statement->name);
+ if (section != NULL)
+ {
+ print_dot = section->vma;
- 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 ");
+ len = strlen (output_section_statement->name);
+ if (len >= SECTION_NAME_MAP_LENGTH - 1)
+ {
+ print_nl ();
+ len = 0;
+ }
+ while (len < SECTION_NAME_MAP_LENGTH)
+ {
+ print_space ();
+ ++len;
+ }
- }
- else
- {
- fprintf (config.map_file, "No attached output section");
- }
- print_nl ();
- if (output_section_statement->load_base)
- {
- int b = exp_get_value_int(output_section_statement->load_base,
- 0, "output base", lang_final_phase_enum);
- printf("Output address %08x\n", b);
- }
- if (output_section_statement->section_alignment >= 0
- || output_section_statement->section_alignment >= 0)
- {
- printf("\t\t\t\t\tforced alignment ");
- if ( output_section_statement->section_alignment >= 0)
- {
- printf("section 2**%d ",output_section_statement->section_alignment );
- }
- if ( output_section_statement->subsection_alignment >= 0)
- {
- printf("subsection 2**%d ",output_section_statement->subsection_alignment );
+ minfo ("0x%V %W", section->vma, section->_raw_size);
+
+ if (output_section_statement->load_base != NULL)
+ {
+ bfd_vma addr;
+
+ addr = exp_get_abs_int (output_section_statement->load_base, 0,
+ "load base", lang_final_phase_enum);
+ minfo (_(" load address 0x%V"), addr);
+ }
+ }
+
+ print_nl ();
}
-
- print_nl ();
- }
- print_statement (output_section_statement->children.head,
- output_section_statement);
+ print_statement_list (output_section_statement->children.head,
+ output_section_statement);
}
static void
lang_assignment_statement_type * assignment;
lang_output_section_statement_type * output_section;
{
+ int i;
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);
+ for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
+ print_space ();
- if (result.valid)
- {
- print_address (result.value);
- }
+ result = exp_fold_tree (assignment->exp->assign.src, output_section,
+ lang_final_phase_enum, print_dot, &print_dot);
+ if (result.valid_p)
+ minfo ("0x%V", result.value + result.section->bfd_section->vma);
else
{
- fprintf (config.map_file, "*undefined*");
+ minfo ("*undef* ");
+#ifdef BFD64
+ minfo (" ");
+#endif
}
- print_space ();
+
+ minfo (" ");
+
exp_print_tree (assignment->exp);
- fprintf (config.map_file, "\n");
+ print_nl ();
}
static void
}
}
-static void
-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 ();
+/* Print all symbols defined in a particular section. This is called
+ via bfd_link_hash_traverse. */
+
+static boolean
+print_one_symbol (hash_entry, ptr)
+ struct bfd_link_hash_entry *hash_entry;
+ PTR ptr;
+{
+ asection *sec = (asection *) ptr;
+
+ if ((hash_entry->type == bfd_link_hash_defined
+ || hash_entry->type == bfd_link_hash_defweak)
+ && sec == hash_entry->u.def.section)
+ {
+ int i;
+
+ for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
+ print_space ();
+ minfo ("0x%V ",
+ (hash_entry->u.def.value
+ + hash_entry->u.def.section->output_offset
+ + hash_entry->u.def.section->output_section->vma));
+
+ minfo (" %T\n", hash_entry->root.string);
+ }
+
+ return true;
}
+/* Print information about an input section to the map file. */
+
static void
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);
+ bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size;
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)
- {
+ print_space ();
- bfd *abfd = in->ifile->the_bfd;
+ minfo ("%s", i->name);
- if (in->ifile->just_syms_flag == true)
- {
- fprintf (config.map_file, "symbols only ");
- }
+ if (i->output_section != NULL)
+ {
+ int len;
- 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));
+ len = 1 + strlen (i->name);
+ if (len >= SECTION_NAME_MAP_LENGTH - 1)
+ {
print_nl ();
+ len = 0;
+ }
+ while (len < SECTION_NAME_MAP_LENGTH)
+ {
+ print_space ();
+ ++len;
+ }
- /* Find all the symbols in this file defined in this section */
+ minfo ("0x%V %W %B\n",
+ i->output_section->vma + i->output_offset, size,
+ i->owner);
- if (in->ifile->symbol_count)
+ if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size)
+ {
+ len = SECTION_NAME_MAP_LENGTH + 3;
+#ifdef BFD64
+ len += 16;
+#else
+ len += 8;
+#endif
+ while (len > 0)
{
- 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);
- }
- }
+ print_space ();
+ --len;
}
- }
- else
- {
- print_nl ();
+
+ minfo (_("%W (size before relaxing)\n"), i->_raw_size);
}
+ bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
- print_dot = outside_section_address (i) + size;
- }
- else
- {
- fprintf (config.map_file, "No output section allocated\n");
+ print_dot = i->output_section->vma + i->output_offset + size;
}
}
}
print_fill_statement (fill)
lang_fill_statement_type * fill;
{
- fprintf (config.map_file, "FILL mask ");
- print_fill (fill->fill);
+ fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill);
}
static void
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);*/
+ int i;
+ bfd_vma addr;
+ bfd_size_type size;
+ const char *name;
+
+ for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
+ print_space ();
+
+ addr = data->output_vma;
+ if (data->output_section != NULL)
+ addr += data->output_section->vma;
- print_address (data->output_vma + data->output_section->vma);
- print_space ();
- print_address (data->value);
- print_space ();
switch (data->type)
{
+ default:
+ abort ();
case BYTE:
- fprintf (config.map_file, "BYTE ");
- print_dot += BYTE_SIZE;
+ size = BYTE_SIZE;
+ name = "BYTE";
+ break;
+ case SHORT:
+ size = SHORT_SIZE;
+ name = "SHORT";
+ break;
+ case LONG:
+ size = LONG_SIZE;
+ name = "LONG";
+ break;
+ case QUAD:
+ size = QUAD_SIZE;
+ name = "QUAD";
+ break;
+ case SQUAD:
+ size = QUAD_SIZE;
+ name = "SQUAD";
+ break;
+ }
+
+ minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
+
+ if (data->exp->type.node_class != etree_value)
+ {
+ print_space ();
+ exp_print_tree (data->exp);
+ }
+
+ print_nl ();
+
+ print_dot = addr + size;
+}
+
+/* Print an address statement. These are generated by options like
+ -Ttext. */
+
+static void
+print_address_statement (address)
+ lang_address_statement_type *address;
+{
+ minfo (_("Address of section %s set to "), address->section_name);
+ exp_print_tree (address->address);
+ print_nl ();
+}
+
+/* Print a reloc statement. */
+
+static void
+print_reloc_statement (reloc)
+ lang_reloc_statement_type *reloc;
+{
+ int i;
+ bfd_vma addr;
+ bfd_size_type size;
+
+ for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
+ print_space ();
+
+ addr = reloc->output_vma;
+ if (reloc->output_section != NULL)
+ addr += reloc->output_section->vma;
+
+ size = bfd_get_reloc_size (reloc->howto);
+
+ minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
+
+ if (reloc->name != NULL)
+ minfo ("%s+", reloc->name);
+ else
+ minfo ("%s+", reloc->section->name);
+
+ exp_print_tree (reloc->addend_exp);
+
+ print_nl ();
+
+ print_dot = addr + size;
+}
+
+static void
+print_padding_statement (s)
+ lang_padding_statement_type *s;
+{
+ int len;
+ bfd_vma addr;
+
+ minfo (" *fill*");
+
+ len = sizeof " *fill*" - 1;
+ while (len < SECTION_NAME_MAP_LENGTH)
+ {
+ print_space ();
+ ++len;
+ }
+
+ addr = s->output_offset;
+ if (s->output_section != NULL)
+ addr += s->output_section->vma;
+ minfo ("0x%V %W", addr, s->size);
+
+ if (s->fill != 0)
+ minfo (" %u", s->fill);
+
+ print_nl ();
+
+ print_dot = addr + s->size;
+}
+
+static void
+print_wild_statement (w, os)
+ lang_wild_statement_type * w;
+ lang_output_section_statement_type * os;
+{
+ print_space ();
+
+ if (w->filenames_sorted)
+ minfo ("SORT(");
+ if (w->exclude_filename != NULL)
+ minfo ("EXCLUDE_FILE ( %s )", w->exclude_filename);
+ if (w->filename != NULL)
+ minfo ("%s", w->filename);
+ else
+ minfo ("*");
+ if (w->filenames_sorted)
+ minfo (")");
+
+ minfo ("(");
+ if (w->sections_sorted)
+ minfo ("SORT(");
+ if (w->section_name != NULL)
+ minfo ("%s", w->section_name);
+ else
+ minfo ("*");
+ if (w->sections_sorted)
+ minfo (")");
+ minfo (")");
+
+ print_nl ();
+
+ print_statement_list (w->children.head, os);
+}
+
+/* Print a group statement. */
+
+static void
+print_group (s, os)
+ lang_group_statement_type *s;
+ lang_output_section_statement_type *os;
+{
+ fprintf (config.map_file, "START GROUP\n");
+ print_statement_list (s->children.head, os);
+ fprintf (config.map_file, "END GROUP\n");
+}
+
+/* Print the list of statements in S.
+ This can be called for any statement type. */
+
+static void
+print_statement_list (s, os)
+ lang_statement_union_type *s;
+ lang_output_section_statement_type *os;
+{
+ while (s != NULL)
+ {
+ print_statement (s, os);
+ s = s->next;
+ }
+}
+
+/* Print the first statement in statement list S.
+ This can be called for any statement type. */
+
+static void
+print_statement (s, os)
+ lang_statement_union_type *s;
+ lang_output_section_statement_type *os;
+{
+ switch (s->header.type)
+ {
+ default:
+ fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
+ FAIL ();
+ break;
+ case lang_constructors_statement_enum:
+ if (constructor_list.head != NULL)
+ {
+ if (constructors_sorted)
+ minfo (" SORT (CONSTRUCTORS)\n");
+ else
+ minfo (" CONSTRUCTORS\n");
+ print_statement_list (constructor_list.head, os);
+ }
+ break;
+ case lang_wild_statement_enum:
+ print_wild_statement (&s->wild_statement, os);
+ break;
+ case lang_address_statement_enum:
+ print_address_statement (&s->address_statement);
+ break;
+ case lang_object_symbols_statement_enum:
+ minfo (" CREATE_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_reloc_statement_enum:
+ print_reloc_statement (&s->reloc_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:
+ minfo ("OUTPUT(%s", s->output_statement.name);
+ if (output_target != NULL)
+ minfo (" %s", output_target);
+ minfo (")\n");
break;
- case SHORT:
- fprintf (config.map_file, "SHORT ");
- print_dot += SHORT_SIZE;
+ case lang_input_statement_enum:
+ print_input_statement (&s->input_statement);
break;
- case LONG:
- fprintf (config.map_file, "LONG ");
- print_dot += LONG_SIZE;
+ case lang_group_statement_enum:
+ print_group (&s->group_statement, os);
+ break;
+ case lang_afile_asection_pair_statement_enum:
+ FAIL ();
break;
}
-
- exp_print_tree (data->exp);
-
- fprintf (config.map_file, "\n");
}
-
static void
-print_padding_statement (s)
- lang_padding_statement_type * s;
+print_statements ()
{
- 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;
-
+ print_statement_list (statement_list.head, abs_output_section);
}
-static void
-print_wild_statement (w, os)
- lang_wild_statement_type * w;
- 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);
+/* Print the first N statements in statement list S to STDERR.
+ If N == 0, nothing is printed.
+ If N < 0, the entire list is printed.
+ Intended to be called from GDB. */
-}
-static void
-print_statement (s, os)
+void
+dprint_statement (s, n)
lang_statement_union_type * s;
- lang_output_section_statement_type * os;
+ int n;
{
- while (s)
+ FILE *map_save = config.map_file;
+
+ config.map_file = stderr;
+
+ if (n < 0)
+ print_statement_list (s, abs_output_section);
+ else
{
- switch (s->header.type)
+ while (s && --n >= 0)
{
- 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 ? output_target : "");
- break;
- case lang_input_statement_enum:
- print_input_statement (&s->input_statement);
- break;
- case lang_afile_asection_pair_statement_enum:
- FAIL ();
- break;
+ print_statement (s, abs_output_section);
+ s = s->next;
}
- s = s->next;
}
-}
-
-
-static void
-print_statements ()
-{
- print_statement (statement_list.head,
- abs_output_section);
+ config.map_file = map_save;
}
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)
+insert_pad (this_ptr, fill, power, output_section_statement, dot)
+ lang_statement_union_type ** this_ptr;
+ fill_type fill;
+ unsigned int power;
+ asection * output_section_statement;
+ bfd_vma dot;
{
/* Align this section first to the
input sections requirement, then
if (alignment_needed != 0)
{
lang_statement_union_type *new =
- (lang_statement_union_type *)
- stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type)));
+ ((lang_statement_union_type *)
+ stat_alloc (sizeof (lang_padding_statement_type)));
/* Link into existing chain */
new->header.next = *this_ptr;
/* 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)
+size_input_section (this_ptr, output_section_statement, fill, dot, relax)
+ lang_statement_union_type ** this_ptr;
+ lang_output_section_statement_type * output_section_statement;
+ fill_type fill;
+ bfd_vma dot;
+ boolean relax;
{
lang_input_section_type *is = &((*this_ptr)->input_section);
asection *i = is->section;
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) != 0
- && (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;
- }
+ if (i->_cooked_size != 0)
+ dot += i->_cooked_size;
else
- {
- dot += i->_raw_size;
- }
+ dot += i->_raw_size;
output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma;
}
else
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;
+/* Check to see if any allocated sections overlap with other allocated
+ sections. This can happen when the linker script specifically specifies
+ the output section addresses of the two sections. */
+static void
+lang_check_section_addresses ()
+{
+ asection * s;
-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 */
+ /* Scan all sections in the output list. */
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ /* Ignore sections which are not loaded or which have no contents. */
+ if ((bfd_get_section_flags (output_bfd, s) & (SEC_ALLOC | SEC_LOAD))
+ && bfd_section_size (output_bfd, s) != 0)
+ {
+ asection * os;
+
+ /* Once we reach section 's' stop our seach. This prevents two
+ warning messages from being produced, one for 'section A overlaps
+ section B' and one for 'section B overlaps section A'. */
+ for (os = output_bfd->sections; os != s; os = os->next)
+ {
+ bfd_vma s_start;
+ bfd_vma s_end;
+ bfd_vma os_start;
+ bfd_vma os_end;
+
+ /* Only consider loadable sections with real contents. */
+ if (((bfd_get_section_flags (output_bfd, os)
+ & (SEC_ALLOC | SEC_LOAD)) == 0)
+ || bfd_section_size (output_bfd, os) == 0)
+ continue;
+
+ /* We must check the sections' LMA addresses not their
+ VMA addresses because overlay sections can have
+ overlapping VMAs but they must have distinct LMAs. */
+ s_start = bfd_section_lma (output_bfd, s);
+ os_start = bfd_section_lma (output_bfd, os);
+ s_end = s_start + bfd_section_size (output_bfd, s) - 1;
+ os_end = os_start + bfd_section_size (output_bfd, os) - 1;
+
+ /* Look for an overlap. */
+ if ((s_end < os_start) || (s_start > os_end))
+ continue;
+
+ einfo (
+_("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
+ s->name, s_start, s_end, os->name, os_start, os_end);
+
+ /* Once we have found one overlap for this section,
+ stop looking for others. */
+ break;
+ }
+ }
+}
+
+/* This variable indicates whether bfd_relax_section should be called
+ again. */
+
+static boolean relax_again;
+
+/* Set the sizes for all the output sections. */
+
+bfd_vma
+lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
+ lang_statement_union_type * s;
+ lang_output_section_statement_type * output_section_statement;
+ lang_statement_union_type ** prev;
+ fill_type fill;
+ bfd_vma dot;
+ 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 this is a shared library section, don't change the size
- and address. */
- if (os->bfd_section->flags & SEC_SHARED_LIBRARY)
- break;
-
- 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);
-
- if (os->load_base) {
- os->bfd_section->lma
- = exp_get_value_int(os->load_base, 0,"load base", lang_final_phase_enum);
- }
- }
-
-
- 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_N (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)
- || ( os->region->origin > os->region->current ))
- {
- 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;
-
- }
-
- }
- }
+ {
+ switch (s->header.type)
+ {
+ case lang_output_section_statement_enum:
+ {
+ bfd_vma after;
+ lang_output_section_statement_type *os = &s->output_section_statement;
- 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;
+ if (os->bfd_section == NULL)
+ /* This section was never actually created. */
+ 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;
+ /* If this is a COFF shared library section, use the size and
+ address from the input section. FIXME: This is COFF
+ specific; it would be cleaner if there were some other way
+ to do this, but nothing simple comes to mind. */
+ if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
+ {
+ asection * input;
+
+ if (os->children.head == NULL
+ || os->children.head->next != NULL
+ || os->children.head->header.type != lang_input_section_enum)
+ einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
+ os->name);
+
+ input = os->children.head->input_section.section;
+ bfd_set_section_vma (os->bfd_section->owner,
+ os->bfd_section,
+ bfd_section_vma (input->owner, input));
+ os->bfd_section->_raw_size = input->_raw_size;
+ break;
+ }
+
+ if (bfd_is_abs_section (os->bfd_section))
+ {
+ /* No matter what happens, an abs section starts at zero. */
+ ASSERT (os->bfd_section->vma == 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
+ || (((bfd_get_section_flags (output_bfd, os->bfd_section)
+ & (SEC_ALLOC | SEC_LOAD)) != 0)
+ && os->region->name[0] == '*'
+ && strcmp (os->region->name, "*default*") == 0))
+ {
+ os->region = lang_memory_default (os->bfd_section);
+ }
+
+ /* If a loadable section is using the default memory
+ region, and some non default memory regions were
+ defined, issue a warning. */
+ if ((bfd_get_section_flags (output_bfd, os->bfd_section)
+ & (SEC_ALLOC | SEC_LOAD)) != 0
+ && ! link_info.relocateable
+ && strcmp (os->region->name, "*default*") == 0
+ && lang_memory_region_list != NULL
+ && (strcmp (lang_memory_region_list->name, "*default*") != 0
+ || lang_memory_region_list->next != NULL))
+ einfo (_("%P: warning: no memory region specified for section `%s'\n"),
+ bfd_get_section_name (output_bfd, os->bfd_section));
+
+ dot = os->region->current;
+
+ if (os->section_alignment == -1)
+ {
+ bfd_vma olddot;
+
+ olddot = dot;
+ dot = align_power (dot, os->bfd_section->alignment_power);
+
+ if (dot != olddot && config.warn_section_align)
+ einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
+ os->name, (unsigned int) (dot - olddot));
+ }
+ }
+ else
+ {
+ etree_value_type r;
+
+ r = exp_fold_tree (os->addr_tree,
+ abs_output_section,
+ lang_allocating_phase_enum,
+ dot, &dot);
+ if (r.valid_p == false)
+ {
+ einfo (_("%F%S: non constant address expression for section %s\n"),
+ os->name);
+ }
+ dot = r.value + r.section->bfd_section->vma;
+ }
+
+ /* The section starts here.
+ First, align to what the section needs. */
+
+ if (os->section_alignment != -1)
+ dot = align_power (dot, os->section_alignment);
+
+ 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_N (os->bfd_section->vma +
+ os->bfd_section->_raw_size,
+ /* The coercion here is important, see ld.h. */
+ (bfd_vma) os->block_value);
+
+ if (bfd_is_abs_section (os->bfd_section))
+ ASSERT (after == os->bfd_section->vma);
+ else
+ os->bfd_section->_raw_size = after - os->bfd_section->vma;
+ dot = os->bfd_section->vma + os->bfd_section->_raw_size;
+ os->processed = true;
+
+ /* Update dot in the region ?
+ We only do this if the section is going to be allocated,
+ since unallocated sections do not contribute to the region's
+ overall size in memory. */
+ if (os->region != (lang_memory_region_type *) NULL
+ && (bfd_get_section_flags (output_bfd, os->bfd_section)
+ & (SEC_ALLOC | SEC_LOAD)))
+ {
+ os->region->current = dot;
+
+ /* Make sure this isn't silly. */
+ if (os->region->current < os->region->origin
+ || (os->region->current - os->region->origin
+ > os->region->length))
+ {
+ if (os->addr_tree != (etree_type *) NULL)
+ {
+ einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
+ os->region->current,
+ os->bfd_section->owner,
+ os->bfd_section->name,
+ os->region->name);
+ }
+ else
+ {
+ 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 = os->region->origin;
+ }
+ }
+ }
+ break;
- case lang_wild_statement_enum:
+ case lang_constructors_statement_enum:
+ dot = lang_size_sections (constructor_list.head,
+ output_section_statement,
+ &s->wild_statement.children.head,
+ fill,
+ dot, relax);
+ break;
- dot = lang_size_sections (s->wild_statement.children.head,
- output_section_statement,
- &s->wild_statement.children.head,
+ case lang_data_statement_enum:
+ {
+ unsigned int size = 0;
- fill, dot, relax);
+ s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
+ s->data_statement.output_section =
+ output_section_statement->bfd_section;
- break;
+ switch (s->data_statement.type)
+ {
+ case QUAD:
+ case SQUAD:
+ size = QUAD_SIZE;
+ break;
+ case LONG:
+ size = LONG_SIZE;
+ break;
+ case SHORT:
+ size = SHORT_SIZE;
+ break;
+ case BYTE:
+ size = BYTE_SIZE;
+ 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;
+ dot += size;
+ output_section_statement->bfd_section->_raw_size += size;
+ /* The output section gets contents, and then we inspect for
+ any flags set in the input script which override any ALLOC. */
+ output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
+ if (!(output_section_statement->flags & SEC_NEVER_LOAD)) {
+ output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD;
+ }
+ }
+ break;
- if( relax_section (prev))
- had_relax = true;
- relaxing = false;
+ case lang_reloc_statement_enum:
+ {
+ int size;
+
+ s->reloc_statement.output_vma =
+ dot - output_section_statement->bfd_section->vma;
+ s->reloc_statement.output_section =
+ output_section_statement->bfd_section;
+ size = bfd_get_reloc_size (s->reloc_statement.howto);
+ dot += size;
+ output_section_statement->bfd_section->_raw_size += size;
+ }
+ break;
+
+ case lang_wild_statement_enum:
- }
- else {
- (*prev)->input_section.section->_cooked_size =
- (*prev)->input_section.section->_raw_size ;
+ dot = lang_size_sections (s->wild_statement.children.head,
+ output_section_statement,
+ &s->wild_statement.children.head,
- }
- 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, dot, relax);
- 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;
- break;
- default:
- FAIL ();
- break;
- /* This can only get here when relaxing is turned on */
- case lang_padding_statement_enum:
+ case lang_object_symbols_statement_enum:
+ link_info.create_object_symbols_section =
+ output_section_statement->bfd_section;
+ break;
+ case lang_output_statement_enum:
+ case lang_target_statement_enum:
+ break;
+ case lang_input_section_enum:
+ {
+ asection *i;
- case lang_address_statement_enum:
- break;
+ i = (*prev)->input_section.section;
+ if (! relax)
+ {
+ if (i->_cooked_size == 0)
+ i->_cooked_size = i->_raw_size;
+ }
+ else
+ {
+ boolean again;
+
+ if (! bfd_relax_section (i->owner, i, &link_info, &again))
+ einfo (_("%P%F: can't relax section: %E\n"));
+ if (again)
+ relax_again = true;
+ }
+ 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)
+ {
+ /* The assignment changed dot. Insert a pad. */
+ if (output_section_statement == abs_output_section)
+ {
+ /* If we don't have an output section, then just adjust
+ the default memory address. */
+ lang_memory_region_lookup ("*default*")->current = newdot;
+ }
+ else if (!relax)
+ {
+ lang_statement_union_type *new =
+ ((lang_statement_union_type *)
+ stat_alloc (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;
+
+ case lang_padding_statement_enum:
+ /* If we are relaxing, and this is not the first pass, some
+ padding statements may have been inserted during previous
+ passes. We may have to move the padding statement to a new
+ location if dot has a different value at this point in this
+ pass than it did at this point in the previous pass. */
+ s->padding_statement.output_offset =
+ dot - output_section_statement->bfd_section->vma;
+ dot += s->padding_statement.size;
+ output_section_statement->bfd_section->_raw_size +=
+ s->padding_statement.size;
+ break;
+
+ case lang_group_statement_enum:
+ dot = lang_size_sections (s->group_statement.children.head,
+ output_section_statement,
+ &s->group_statement.children.head,
+ fill, dot, relax);
+ break;
+
+ default:
+ FAIL ();
+ break;
+
+ /* This can only get here when relaxing is turned on. */
+
+ case lang_address_statement_enum:
+ break;
+ }
+ prev = &s->header.next;
}
- 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)
+bfd_vma
+lang_do_assignments (s, output_section_statement, fill, dot)
+ lang_statement_union_type * s;
+ lang_output_section_statement_type * output_section_statement;
+ fill_type fill;
+ bfd_vma dot;
{
-
for (; s != (lang_statement_union_type *) NULL; s = s->next)
{
switch (s->header.type)
case lang_output_section_statement_enum:
{
lang_output_section_statement_type *os =
- &(s->output_section_statement);
+ &(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;
+ if (os->bfd_section != NULL)
+ {
+ 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;
+ }
+ if (os->load_base)
+ {
+ /* If nothing has been placed into the output section then
+ it won't have a bfd_section. */
+ if (os->bfd_section)
+ {
+ os->bfd_section->lma
+ = exp_get_abs_int(os->load_base, 0,"load base", lang_final_phase_enum);
+ }
+ }
}
break;
case lang_wild_statement_enum:
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");
+ if (value.valid_p == false)
+ einfo (_("%F%P: invalid data statement\n"));
}
switch (s->data_statement.type)
{
+ case QUAD:
+ case SQUAD:
+ dot += QUAD_SIZE;
+ break;
case LONG:
dot += LONG_SIZE;
break;
break;
}
break;
+
+ case lang_reloc_statement_enum:
+ {
+ etree_value_type value;
+
+ value = exp_fold_tree (s->reloc_statement.addend_exp,
+ abs_output_section,
+ lang_final_phase_enum, dot, &dot);
+ s->reloc_statement.addend_value = value.value;
+ if (value.valid_p == false)
+ einfo (_("%F%P: invalid reloc statement\n"));
+ }
+ dot += bfd_get_reloc_size (s->reloc_statement.howto);
+ break;
+
case lang_input_section_enum:
{
asection *in = s->input_section.section;
- dot += bfd_get_section_size_before_reloc (in);
+ if (in->_cooked_size != 0)
+ dot += in->_cooked_size;
+ else
+ dot += in->_raw_size;
}
break;
case lang_padding_statement_enum:
dot += s->padding_statement.size;
break;
+
+ case lang_group_statement_enum:
+ dot = lang_do_assignments (s->group_statement.children.head,
+ output_section_statement,
+ fill, dot);
+
+ break;
+
default:
FAIL ();
break;
return dot;
}
-
+/* Fix any .startof. or .sizeof. symbols. When the assemblers see the
+ operator .startof. (section_name), it produces an undefined symbol
+ .startof.section_name. Similarly, when it sees
+ .sizeof. (section_name), it produces an undefined symbol
+ .sizeof.section_name. For all the output sections, we look for
+ such symbols, and set them to the correct value. */
static void
-lang_relocate_globals ()
+lang_set_startof ()
{
- /*
- 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.
- */
+ asection *s;
- FOR_EACH_LDSYM (lgs)
- {
- asymbol *it;
+ if (link_info.relocateable)
+ return;
- /* Skip indirect symbols. */
- if (lgs->flags & SYM_INDIRECT)
- continue;
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ {
+ const char *secname;
+ char *buf;
+ struct bfd_link_hash_entry *h;
- 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 **prev = 0;
- asymbol **ptr = lgs->srefs_chain;;
- if (lgs->flags & SYM_WARNING)
- {
- produce_warnings (lgs, it);
- }
+ secname = bfd_get_section_name (output_bfd, s);
+ buf = xmalloc (10 + strlen (secname));
- while (ptr != (asymbol **) NULL
- && ptr != prev)
- {
- asymbol *ref = *ptr;
- prev = ptr;
- *ptr = it;
- ptr = (asymbol **) (ref->udata);
- }
- }
- }
-}
+ sprintf (buf, ".startof.%s", secname);
+ h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
+ if (h != NULL && h->type == bfd_link_hash_undefined)
+ {
+ h->type = bfd_link_hash_defined;
+ h->u.def.value = bfd_get_section_vma (output_bfd, s);
+ h->u.def.section = bfd_abs_section_ptr;
+ }
+ sprintf (buf, ".sizeof.%s", secname);
+ h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
+ if (h != NULL && h->type == bfd_link_hash_undefined)
+ {
+ h->type = bfd_link_hash_defined;
+ if (s->_cooked_size != 0)
+ h->u.def.value = s->_cooked_size;
+ else
+ h->u.def.value = s->_raw_size;
+ h->u.def.section = bfd_abs_section_ptr;
+ }
+ free (buf);
+ }
+}
static void
lang_finish ()
{
- ldsym_type *lgs;
- int warn = config.relocateable_output != true;
- 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);
+ struct bfd_link_hash_entry *h;
+ boolean warn;
- /* We can set the entry address*/
- bfd_set_start_address (output_bfd,
- outside_symbol_address (sy));
-
- }
+ if (link_info.relocateable || link_info.shared)
+ warn = false;
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)
+ warn = true;
+
+ if (entry_symbol == (char *) NULL)
{
- if (warn)
- einfo ("%P: Warning, can't find entry symbol %s, defaulting to %V\n",
- entry_symbol, ts->vma);
+ /* No entry has been specified. Look for start, but don't warn
+ if we don't find it. */
+ entry_symbol = "start";
+ warn = false;
+ }
- bfd_set_start_address (output_bfd, ts->vma);
+ h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
+ if (h != (struct bfd_link_hash_entry *) NULL
+ && (h->type == bfd_link_hash_defined
+ || h->type == bfd_link_hash_defweak)
+ && h->u.def.section->output_section != NULL)
+ {
+ bfd_vma val;
+
+ val = (h->u.def.value
+ + bfd_get_section_vma (output_bfd,
+ h->u.def.section->output_section)
+ + h->u.def.section->output_offset);
+ if (! bfd_set_start_address (output_bfd, val))
+ einfo (_("%P%F:%s: can't set start address\n"), entry_symbol);
}
- else
+ else
{
- if (warn)
- einfo ("%P: Warning, can't find entry symbol %s, not setting start address\n",
- entry_symbol);
+ bfd_vma val;
+ CONST char *send;
+
+ /* We couldn't find the entry symbol. Try parsing it as a
+ number. */
+ val = bfd_scan_vma (entry_symbol, &send, 0);
+ if (*send == '\0')
+ {
+ if (! bfd_set_start_address (output_bfd, val))
+ einfo (_("%P%F: can't set start address\n"));
+ }
+ else
+ {
+ asection *ts;
+
+ /* Can't find the entry symbol, and it's not a number. Use
+ the first address in the text section. */
+ ts = bfd_get_section_by_name (output_bfd, ".text");
+ if (ts != (asection *) NULL)
+ {
+ if (warn)
+ einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"),
+ entry_symbol, bfd_get_section_vma (output_bfd, ts));
+ if (! bfd_set_start_address (output_bfd,
+ bfd_get_section_vma (output_bfd,
+ ts)))
+ einfo (_("%P%F: can't set start address\n"));
+ }
+ else
+ {
+ if (warn)
+ einfo (_("%P: warning: cannot 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 */
+/* This is a small function used when we want to ignore errors from
+ BFD. */
+
+static void
+#ifdef ANSI_PROTOTYPES
+ignore_bfd_errors (const char *s, ...)
+#else
+ignore_bfd_errors (s)
+ const char *s;
+#endif
+{
+ /* Don't do anything. */
+}
+
+/* Check that the architecture of all the input files is compatible
+ with the output file. Also call the backend to let it do any
+ other checking that is needed. */
+
static 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 = file->input_statement.next)
{
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)
+ if (compatible == NULL)
{
- ldfile_output_machine = compatible->mach;
- ldfile_output_architecture = compatible->arch;
+ if (command_line.warn_mismatch)
+ einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"),
+ bfd_printable_name (input_bfd), input_bfd,
+ bfd_printable_name (output_bfd));
}
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);
+ bfd_error_handler_type pfn = NULL;
+
+ /* If we aren't supposed to warn about mismatched input
+ files, temporarily set the BFD error handler to a
+ function which will do nothing. We still want to call
+ bfd_merge_private_bfd_data, since it may set up
+ information which is needed in the output file. */
+ if (! command_line.warn_mismatch)
+ pfn = bfd_set_error_handler (ignore_bfd_errors);
+ if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
+ {
+ if (command_line.warn_mismatch)
+ einfo (_("%E%X: failed to merge target specific data of file %B\n"),
+ input_bfd);
+ }
+ if (! command_line.warn_mismatch)
+ bfd_set_error_handler (pfn);
}
-
}
}
-/*
- * 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
- */
+/* Look through all the global common symbols and attach them to the
+ correct section. The -sort-common command line switch may be used
+ to roughly sort the entries by size. */
static void
lang_common ()
{
- ldsym_type *lgs;
- size_t power;
+ if (link_info.relocateable
+ && ! command_line.force_common_definition)
+ return;
- if (config.relocateable_output == false ||
- command_line.force_common_definition == true)
+ if (! config.sort_common)
+ bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
+ else
{
- 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;
+ int power;
- 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)
- {
- bfd *symbfd;
-
- /* 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 */
- symbfd = bfd_asymbol_bfd (com);
- if (com->section == &bfd_com_section)
- com->section =
- ((lang_input_statement_type *) symbfd->usrdata)
- ->common_section;
- else
- {
- CONST char *name;
- asection *newsec;
-
- name = bfd_get_section_name (symbfd,
- com->section);
- newsec = bfd_get_section_by_name (symbfd,
- name);
- /* BFD backend must provide this section. */
- if (newsec == (asection *) NULL)
- einfo ("%P%F: No output section %s", name);
- com->section = newsec;
- }
+ for (power = 4; power >= 0; power--)
+ bfd_link_hash_traverse (link_info.hash, lang_one_common,
+ (PTR) &power);
+ }
+}
+
+/* Place one common symbol in the correct section. */
- /* Fix the size of the common section */
+static boolean
+lang_one_common (h, info)
+ struct bfd_link_hash_entry *h;
+ PTR info;
+{
+ unsigned int power_of_two;
+ bfd_vma size;
+ asection *section;
- com->section->_raw_size =
- ALIGN_N (com->section->_raw_size, align);
+ if (h->type != bfd_link_hash_common)
+ return true;
- /* Remember if this is the biggest alignment ever seen */
- if (power_of_two > com->section->alignment_power)
- {
- com->section->alignment_power = power_of_two;
- }
+ size = h->u.c.size;
+ power_of_two = h->u.c.p->alignment_power;
- /* Symbol stops being common and starts being global, but
- we remember that it was common once. */
+ if (config.sort_common
+ && power_of_two < (unsigned int) *(int *) info)
+ return true;
- com->flags = BSF_EXPORT | BSF_GLOBAL | BSF_OLD_COMMON;
- com->value = com->section->_raw_size;
+ section = h->u.c.p->section;
- if (write_map && config.map_file)
- {
- fprintf (config.map_file, "Allocating common %s: %x at %x %s\n",
- lgs->name,
- (unsigned) size,
- (unsigned) com->value,
- bfd_asymbol_bfd(com)->filename);
- }
+ /* Increase the size of the section. */
+ section->_cooked_size = ALIGN_N (section->_cooked_size,
+ (bfd_size_type) (1 << power_of_two));
- com->section->_raw_size += size;
+ /* Adjust the alignment if necessary. */
+ if (power_of_two > section->alignment_power)
+ section->alignment_power = power_of_two;
- }
- }
+ /* Change the symbol from common to defined. */
+ h->type = bfd_link_hash_defined;
+ h->u.def.section = section;
+ h->u.def.value = section->_cooked_size;
- }
+ /* Increase the size of the section. */
+ section->_cooked_size += size;
+
+ /* Make sure the section is allocated in memory, and make sure that
+ it is no longer a common section. */
+ section->flags |= SEC_ALLOC;
+ section->flags &= ~ SEC_IS_COMMON;
+
+ if (config.map_file != NULL)
+ {
+ static boolean header_printed;
+ int len;
+ char *name;
+ char buf[50];
+
+ if (! header_printed)
+ {
+ minfo (_("\nAllocating common symbols\n"));
+ minfo (_("Common symbol size file\n\n"));
+ header_printed = true;
+ }
+
+ name = demangle (h->root.string);
+ minfo ("%s", name);
+ len = strlen (name);
+ free (name);
+
+ if (len >= 19)
+ {
+ print_nl ();
+ len = 0;
+ }
+ while (len < 20)
+ {
+ print_space ();
+ ++len;
+ }
+
+ minfo ("0x");
+ if (size <= 0xffffffff)
+ sprintf (buf, "%lx", (unsigned long) size);
+ else
+ sprintf_vma (buf, size);
+ minfo ("%s", buf);
+ len = strlen (buf);
+
+ while (len < 16)
+ {
+ print_space ();
+ ++len;
}
- }
+ minfo ("%B\n", section->owner);
+ }
+ return true;
}
/*
/* This section of the file is not attatched, root
around for a sensible place for it to go */
- if (file->common_section == s)
+ if (file->just_syms_flag)
+ {
+ /* We are only retrieving symbol values from this
+ file. We want the symbols to act as though the
+ values in the file are absolute. */
+ s->output_section = bfd_abs_section_ptr;
+ s->output_offset = s->vma;
+ }
+ else if (strcmp (s->name, "COMMON") == 0)
{
- /* 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)
+ /* This is a lonely common section which must have
+ come from an archive. We attach to the section
+ with the wildcard. */
+ if (! link_info.relocateable
+ || command_line.force_common_definition)
{
- if (default_common_section ==
- (lang_output_section_statement_type *) NULL)
+ if (default_common_section == NULL)
{
- info ("%P: No [COMMON] command, defaulting to .bss\n");
-
+#if 0
+ /* This message happens when using the
+ svr3.ifile linker script, so I have
+ disabled it. */
+ info_msg (_("%P: no [COMMON] command, defaulting to .bss\n"));
+#endif
default_common_section =
lang_output_section_statement_lookup (".bss");
default_common_section, file);
}
}
+ else if (ldemul_place_orphan (file, s))
+ ;
else
{
lang_output_section_statement_type *os =
void
lang_set_flags (ptr, flags)
- int *ptr;
+ lang_memory_region_type *ptr;
CONST char *flags;
{
- boolean state = false;
+ flagword *ptr_flags = &ptr->flags;
- *ptr = 0;
+ ptr->flags = ptr->not_flags = 0;
while (*flags)
{
- if (*flags == '!')
- {
- state = false;
- flags++;
- }
- else
- state = true;
switch (*flags)
{
- case 'R':
- /* ptr->flag_read = state; */
+ case '!':
+ ptr_flags = (ptr_flags == &ptr->flags) ? &ptr->not_flags : &ptr->flags;
+ break;
+
+ case 'A': case 'a':
+ *ptr_flags |= SEC_ALLOC;
break;
- case 'W':
- /* ptr->flag_write = state; */
+
+ case 'R': case 'r':
+ *ptr_flags |= SEC_READONLY;
+ break;
+
+ case 'W': case 'w':
+ *ptr_flags |= SEC_DATA;
break;
- case 'X':
- /* ptr->flag_executable= state;*/
+
+ case 'X': case 'x':
+ *ptr_flags |= SEC_CODE;
break;
- case 'L':
- case 'I':
- /* ptr->flag_loadable= state;*/
+
+ case 'L': case 'l':
+ case 'I': case 'i':
+ *ptr_flags |= SEC_LOAD;
break;
+
default:
- einfo ("%P%F illegal syntax in flags\n");
+ einfo (_("%P%F: invalid syntax in flags\n"));
break;
}
flags++;
}
}
+/* Call a function on each input file. This function will be called
+ on an archive, but not on the elements. */
+
+void
+lang_for_each_input_file (func)
+ void (*func) PARAMS ((lang_input_statement_type *));
+{
+ lang_input_statement_type *f;
+
+ for (f = (lang_input_statement_type *) input_file_chain.head;
+ f != NULL;
+ f = (lang_input_statement_type *) f->next_real_file)
+ func (f);
+}
+/* Call a function on each file. The function will be called on all
+ the elements of an archive which are included in the link, but will
+ not be called on the archive file itself. */
void
lang_for_each_file (func)
}
}
+#if 0
+
+/* Not used. */
void
lang_for_each_input_section (func)
}
}
-
+#endif
void
ldlang_add_file (entry)
lang_input_statement_type * entry;
{
+ bfd **pp;
lang_statement_append (&file_chain,
(lang_statement_union_type *) entry,
&entry->next);
+
+ /* The BFD linker needs to have a list of all input BFDs involved in
+ a link. */
+ ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
+ ASSERT (entry->the_bfd != output_bfd);
+ for (pp = &link_info.input_bfds;
+ *pp != (bfd *) NULL;
+ pp = &(*pp)->link_next)
+ ;
+ *pp = entry->the_bfd;
+ entry->the_bfd->usrdata = (PTR) entry;
+ bfd_set_gp_size (entry->the_bfd, g_switch_value);
+
+ /* Look through the sections and check for any which should not be
+ included in the link. We need to do this now, so that we can
+ notice when the backend linker tries to report multiple
+ definition errors for symbols which are in sections we aren't
+ going to link. FIXME: It might be better to entirely ignore
+ symbols which are defined in sections which are going to be
+ discarded. This would require modifying the backend linker for
+ each backend which might set the SEC_LINK_ONCE flag. If we do
+ this, we should probably handle SEC_EXCLUDE in the same way. */
+
+ bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry);
}
void
-lang_add_output (name)
+lang_add_output (name, from_script)
CONST char *name;
+ int from_script;
{
- lang_output_statement_type *new = new_stat (lang_output_statement,
- stat_ptr);
-
- new->name = name;
- had_output_filename = true;
+ /* Make -o on command line override OUTPUT in script. */
+ if (had_output_filename == false || !from_script)
+ {
+ output_filename = name;
+ had_output_filename = true;
+ }
}
static lang_output_section_statement_type *current_section;
-static int topower(x)
- int x;
+static int
+topower (x)
+ int x;
{
- unsigned int i = 1;
+ unsigned int i = 1;
int l;
- if (x < 0) return -1;
+
+ if (x < 0)
+ return -1;
+
for (l = 0; l < 32; l++)
- {
- if (i >= x) return l;
- i<<=1;
- }
+ {
+ if (i >= (unsigned int) x)
+ return l;
+ i <<= 1;
+ }
+
return 0;
}
+
void
lang_enter_output_section_statement (output_section_statement_name,
- address_exp, flags, block_value,
- align, subalign, base)
- char *output_section_statement_name;
+ address_exp, sectype, block_value,
+ align, subalign, ebase)
+ const char *output_section_statement_name;
etree_type * address_exp;
- int flags;
+ enum section_type sectype;
bfd_vma block_value;
etree_type *align;
etree_type *subalign;
- etree_type *base;
+ etree_type *ebase;
{
lang_output_section_statement_type *os;
os->addr_tree =
address_exp;
}
- os->flags = flags;
- if (flags & SEC_NEVER_LOAD)
- os->loadable = 0;
+ os->sectype = sectype;
+ if (sectype != noload_section)
+ os->flags = SEC_NO_FLAGS;
else
- os->loadable = 1;
+ os->flags = SEC_NEVER_LOAD;
os->block_value = block_value ? block_value : 1;
stat_ptr = &os->children;
exp_get_value_int(align, -1,
"section alignment", 0));
- os->load_base = base;
+ os->load_base = ebase;
}
void
lang_final ()
{
- if (had_output_filename == false)
- {
- extern CONST char *output_filename;
+ lang_output_statement_type *new =
+ new_stat (lang_output_statement, stat_ptr);
- lang_add_output (output_filename);
- }
+ new->name = output_filename;
}
/* Reset the current counters in the regions */
}
}
+/* ??? At some point this traversal for GC should share code with the
+ traversal for manipulating the output file. */
+
+/* Expand a wild statement for a particular FILE, marking its sections KEEP
+ as needed. SECTION may be NULL, in which case it is a wild card. */
+
+static void
+lang_gc_wild_section (ptr, section, file)
+ lang_wild_statement_type *ptr;
+ const char *section;
+ lang_input_statement_type *file;
+{
+ if (file->just_syms_flag == false)
+ {
+ register asection *s;
+ boolean wildcard;
+
+ if (section == NULL)
+ wildcard = false;
+ else
+ wildcard = wildcardp (section);
+
+ for (s = file->the_bfd->sections; s != NULL; s = s->next)
+ {
+ boolean match;
+
+ if (section == NULL)
+ match = true;
+ else
+ {
+ const char *name;
+
+ name = bfd_get_section_name (file->the_bfd, s);
+ if (wildcard)
+ match = fnmatch (section, name, 0) == 0 ? true : false;
+ else
+ match = strcmp (section, name) == 0 ? true : false;
+ }
+
+ if (match)
+ {
+ /* If the wild pattern was marked KEEP, the member sections
+ should be as well. */
+ if (ptr->keep_sections)
+ s->flags |= SEC_KEEP;
+ }
+ }
+ }
+}
+
+/* Handle a wild statement for a single file F. */
+
+static void
+lang_gc_wild_file (s, section, f)
+ lang_wild_statement_type *s;
+ const char *section;
+ lang_input_statement_type *f;
+{
+ if (f->the_bfd == NULL
+ || ! bfd_check_format (f->the_bfd, bfd_archive))
+ lang_gc_wild_section (s, section, f);
+ else
+ {
+ bfd *member;
+
+ /* This is an archive file. We must map each member of the
+ archive separately. */
+ member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
+ while (member != NULL)
+ {
+ /* When lookup_name is called, it will call the add_symbols
+ entry point for the archive. For each element of the
+ archive which is included, BFD will call ldlang_add_file,
+ which will set the usrdata field of the member to the
+ lang_input_statement. */
+ if (member->usrdata != NULL)
+ {
+ lang_gc_wild_section (s, section,
+ (lang_input_statement_type *) member->usrdata);
+ }
+
+ member = bfd_openr_next_archived_file (f->the_bfd, member);
+ }
+ }
+}
+/* Handle a wild statement, marking it against GC. SECTION or FILE or both
+ may be NULL, indicating that it is a wildcard. */
-asymbol *
-DEFUN (create_symbol, (name, flags, section),
- CONST char *name AND
- flagword flags AND
- asection * section)
+static void
+lang_gc_wild (s, section, file)
+ lang_wild_statement_type *s;
+ const char *section;
+ const char *file;
{
- extern lang_input_statement_type *script_file;
- asymbol **def_ptr = (asymbol **) stat_alloc ((bfd_size_type) (sizeof (asymbol **)));
+ lang_input_statement_type *f;
- /* 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;
+ 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)
+ {
+ lang_gc_wild_file (s, section, f);
+ }
+ }
+ else if (wildcardp (file))
+ {
+ for (f = (lang_input_statement_type *) file_chain.head;
+ f != (lang_input_statement_type *) NULL;
+ f = (lang_input_statement_type *) f->next)
+ {
+ if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
+ lang_gc_wild_file (s, section, f);
+ }
+ }
+ else
+ {
+ /* Perform the iteration over a single file */
+ f = lookup_name (file);
+ lang_gc_wild_file (s, section, f);
+ }
}
-void
-lang_process ()
+/* Iterate over sections marking them against GC. */
+
+static void
+lang_gc_sections_1 (s)
+ lang_statement_union_type * s;
+{
+ for (; s != (lang_statement_union_type *) NULL; s = s->next)
+ {
+ switch (s->header.type)
+ {
+ case lang_wild_statement_enum:
+ lang_gc_wild (&s->wild_statement,
+ s->wild_statement.section_name,
+ s->wild_statement.filename);
+ break;
+ case lang_constructors_statement_enum:
+ lang_gc_sections_1 (constructor_list.head);
+ break;
+ case lang_output_section_statement_enum:
+ lang_gc_sections_1 (s->output_section_statement.children.head);
+ break;
+ case lang_group_statement_enum:
+ lang_gc_sections_1 (s->group_statement.children.head);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void
+lang_gc_sections ()
{
- if (had_script == false)
+ struct bfd_link_hash_entry *h;
+ ldlang_undef_chain_list_type *ulist, fake_list_start;
+
+ /* Keep all sections so marked in the link script. */
+
+ lang_gc_sections_1 (statement_list.head);
+
+ /* Keep all sections containing symbols undefined on the command-line.
+ Handle the entry symbol at the same time. */
+
+ fake_list_start.next = ldlang_undef_chain_list_head;
+ if (entry_symbol == NULL)
+ fake_list_start.name = "start";
+ else
+ fake_list_start.name = (char *) entry_symbol;
+
+ for (ulist = &fake_list_start; ulist; ulist = ulist->next)
{
- /* Read the emulation's appropriate default script. */
- char *scriptname = ldemul_get_script ();
- /* sizeof counts the terminating NUL. */
- size_t size = strlen (scriptname) + sizeof ("-Tldscripts/");
- char *buf = (char *) ldmalloc(size);
+ h = bfd_link_hash_lookup (link_info.hash, ulist->name,
+ false, false, false);
- sprintf (buf, "-Tldscripts/%s", scriptname);
- parse_line (buf, 0);
- free (buf);
+ if (h != (struct bfd_link_hash_entry *) NULL
+ && (h->type == bfd_link_hash_defined
+ || h->type == bfd_link_hash_defweak)
+ && ! bfd_is_abs_section (h->u.def.section))
+ {
+ h->u.def.section->flags |= SEC_KEEP;
+ }
}
+ bfd_gc_sections (output_bfd, &link_info);
+}
+
+void
+lang_process ()
+{
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 ();
+ ldemul_create_output_section_statements ();
/* 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);
+ open_input_bfds (statement_list.head, false);
- /* 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);
+ ldemul_after_open ();
+
+ /* Make sure that we're not mixing architectures. We call this
+ after all the input files have been opened, but before we do any
+ other processing, so that any operations merge_private_bfd_data
+ does on the output file will be known during the rest of the
+ link. */
+ lang_check ();
+ /* Handle .exports instead of a version script if we're told to do so. */
+ if (command_line.version_exports_section)
+ lang_do_version_exports_section ();
- /* Find any sections not attatched explicitly and handle them */
- lang_place_orphans ();
+ /* Build all sets based on the information gathered from the input
+ files. */
+ ldctor_build_sets ();
+
+ /* Remove unreferenced sections if asked to. */
+ if (command_line.gc_sections)
+ lang_gc_sections ();
/* Size up the common data */
lang_common ();
- ldemul_before_allocation ();
-
+ /* Run through the contours of the script and attach input sections
+ to the correct output sections
+ */
+ map_input_to_output_sections (statement_list.head, (char *) NULL,
+ (lang_output_section_statement_type *) NULL);
-#if 0
- had_relax = true;
- while (had_relax)
- {
- had_relax = false;
+ /* Find any sections not attached explicitly and handle them */
+ lang_place_orphans ();
- 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;
+ ldemul_before_allocation ();
- }
-#endif
+ /* We must record the program headers before we try to fix the
+ section positions, since they will affect SIZEOF_HEADERS. */
+ lang_record_phdrs ();
/* 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 */
+ /* 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,
+ abs_output_section,
&(statement_list.head), 0, (bfd_vma) 0, false);
+ /* Keep relaxing until bfd_relax_section gives up. */
+ do
+ {
+ reset_memory_regions ();
+ relax_again = 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);
-
+ /* Note: pe-dll.c does something like this also. If you find
+ you need to change this code, you probably need to change
+ pe-dll.c also. DJ */
+ /* Do all the assignments with our current guesses as to
+ section sizes. */
+ lang_do_assignments (statement_list.head,
+ abs_output_section,
+ (fill_type) 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,
+ abs_output_section,
+ &(statement_list.head), 0, (bfd_vma) 0, true);
+ }
+ while (relax_again);
}
-
else
{
- /* Size up the sections */
+ /* 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 */
+ everything is. */
ldemul_after_allocation ();
+ /* Fix any .startof. or .sizeof. symbols. */
+ lang_set_startof ();
+
/* 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 ();
+ (fill_type) 0, (bfd_vma) 0);
+ /* Make sure that the section addresses make sense. */
+ if (! link_info.relocateable
+ && command_line.check_section_addresses)
+ lang_check_section_addresses ();
+
/* Final stuffs */
+
+ ldemul_finish ();
lang_finish ();
}
/* EXPORTED TO YACC */
void
-lang_add_wild (section_name, filename)
- CONST char *CONST section_name;
- CONST char *CONST filename;
+lang_add_wild (section_name, sections_sorted, filename, filenames_sorted,
+ keep_sections, exclude_filename)
+ const char *const section_name;
+ boolean sections_sorted;
+ const char *const filename;
+ boolean filenames_sorted;
+ boolean keep_sections;
+ const char *exclude_filename;
{
lang_wild_statement_type *new = new_stat (lang_wild_statement,
stat_ptr);
{
placed_commons = true;
}
- if (filename != (char *) NULL)
+ if (filename != NULL && ! wildcardp (filename))
{
lang_has_input_file = true;
}
new->section_name = section_name;
+ new->sections_sorted = sections_sorted;
new->filename = filename;
+ new->filenames_sorted = filenames_sorted;
+ new->keep_sections = keep_sections;
+ new->exclude_filename = exclude_filename;
lang_list_init (&new->children);
}
ad->address = address;
}
+/* Set the start symbol to NAME. CMDLINE is nonzero if this is called
+ because of a -e argument on the command line, or zero if this is
+ called by ENTRY in a linker script. Command line arguments take
+ precedence. */
+
void
-lang_add_entry (name)
+lang_add_entry (name, cmdline)
CONST char *name;
+ boolean cmdline;
{
- entry_symbol = name;
+ if (entry_symbol == NULL
+ || cmdline
+ || ! entry_from_cmdline)
+ {
+ entry_symbol = name;
+ entry_from_cmdline = cmdline;
+ }
}
void
}
+/* Create a new reloc statement. RELOC is the BFD relocation type to
+ generate. HOWTO is the corresponding howto structure (we could
+ look this up, but the caller has already done so). SECTION is the
+ section to generate a reloc against, or NAME is the name of the
+ symbol to generate a reloc against. Exactly one of SECTION and
+ NAME must be NULL. ADDEND is an expression for the addend. */
+
void
+lang_add_reloc (reloc, howto, section, name, addend)
+ bfd_reloc_code_real_type reloc;
+ reloc_howto_type *howto;
+ asection *section;
+ const char *name;
+ union etree_union *addend;
+{
+ lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
+
+ p->reloc = reloc;
+ p->howto = howto;
+ p->section = section;
+ p->name = name;
+ p->addend_exp = addend;
+
+ p->addend_value = 0;
+ p->output_section = NULL;
+ p->output_vma = 0;
+}
+
+lang_assignment_statement_type *
lang_add_assignment (exp)
etree_type * exp;
{
stat_ptr);
new->exp = exp;
+ return new;
}
void
{
if (startup_file != (char *) NULL)
{
- einfo ("%P%FMultiple STARTUP files\n");
+ einfo (_("%P%Fmultiple STARTUP files\n"));
}
first_file->filename = name;
first_file->local_sym_name = name;
+ first_file->real = true;
startup_file = name;
}
}
void
-lang_leave_output_section_statement (fill, memspec)
+lang_leave_output_section_statement (fill, memspec, phdrs)
bfd_vma fill;
- CONST char *memspec;
+ const char *memspec;
+ struct lang_output_section_phdr_list *phdrs;
{
current_section->fill = fill;
current_section->region = lang_memory_region_lookup (memspec);
+ current_section->phdrs = phdrs;
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;
-
- }
}
/*
If the symbol already exists, then do nothing.
*/
void
-lang_abs_symbol_at_beginning_of (section, name)
- CONST char *section;
- CONST char *name;
+lang_abs_symbol_at_beginning_of (secname, name)
+ const char *secname;
+ const char *name;
{
- if (ldsym_undefined (name))
+ struct bfd_link_hash_entry *h;
+
+ h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
+ if (h == (struct bfd_link_hash_entry *) NULL)
+ einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
+
+ if (h->type == bfd_link_hash_new
+ || h->type == bfd_link_hash_undefined)
{
- asection *s = bfd_get_section_by_name (output_bfd, section);
- asymbol *def = create_symbol (name,
- BSF_GLOBAL | BSF_EXPORT,
- &bfd_abs_section);
+ asection *sec;
- if (s != (asection *) NULL)
- {
- def->value = s->vma;
- }
+ h->type = bfd_link_hash_defined;
+
+ sec = bfd_get_section_by_name (output_bfd, secname);
+ if (sec == (asection *) NULL)
+ h->u.def.value = 0;
else
- {
- def->value = 0;
- }
+ h->u.def.value = bfd_get_section_vma (output_bfd, sec);
+
+ h->u.def.section = bfd_abs_section_ptr;
}
}
If the symbol already exists, then do nothing.
*/
void
-lang_abs_symbol_at_end_of (section, name)
- CONST char *section;
- CONST char *name;
+lang_abs_symbol_at_end_of (secname, name)
+ const char *secname;
+ const char *name;
{
- if (ldsym_undefined (name))
+ struct bfd_link_hash_entry *h;
+
+ h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
+ if (h == (struct bfd_link_hash_entry *) NULL)
+ einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
+
+ if (h->type == bfd_link_hash_new
+ || h->type == bfd_link_hash_undefined)
{
- asection *s = bfd_get_section_by_name (output_bfd, section);
+ asection *sec;
- /* Add a symbol called _end */
- asymbol *def = create_symbol (name,
- BSF_GLOBAL | BSF_EXPORT,
- &bfd_abs_section);
+ h->type = bfd_link_hash_defined;
- if (s != (asection *) NULL)
- {
- def->value = s->vma + s->_raw_size;
- }
+ sec = bfd_get_section_by_name (output_bfd, secname);
+ if (sec == (asection *) NULL)
+ h->u.def.value = 0;
else
- {
- def->value = 0;
- }
+ h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
+ + bfd_section_size (output_bfd, sec));
+
+ h->u.def.section = bfd_abs_section_ptr;
}
}
}
/* Set the output format type. -oformat overrides scripts. */
+
void
-lang_add_output_format (format, from_script)
- CONST char *format;
+lang_add_output_format (format, big, little, from_script)
+ const char *format;
+ const char *big;
+ const char *little;
int from_script;
{
- if (!from_script || output_target == NULL)
- output_target = format;
+ if (output_target == NULL || !from_script)
+ {
+ if (command_line.endian == ENDIAN_BIG
+ && big != NULL)
+ format = big;
+ else if (command_line.endian == ENDIAN_LITTLE
+ && little != NULL)
+ format = little;
+
+ output_target = format;
+ }
+}
+
+/* Enter a group. This creates a new lang_group_statement, and sets
+ stat_ptr to build new statements within the group. */
+
+void
+lang_enter_group ()
+{
+ lang_group_statement_type *g;
+
+ g = new_stat (lang_group_statement, stat_ptr);
+ lang_list_init (&g->children);
+ stat_ptr = &g->children;
+}
+
+/* Leave a group. This just resets stat_ptr to start writing to the
+ regular list of statements again. Note that this will not work if
+ groups can occur inside anything else which can adjust stat_ptr,
+ but currently they can't. */
+
+void
+lang_leave_group ()
+{
+ stat_ptr = &statement_list;
+}
+
+/* Add a new program header. This is called for each entry in a PHDRS
+ command in a linker script. */
+
+void
+lang_new_phdr (name, type, filehdr, phdrs, at, flags)
+ const char *name;
+ etree_type *type;
+ boolean filehdr;
+ boolean phdrs;
+ etree_type *at;
+ etree_type *flags;
+{
+ struct lang_phdr *n, **pp;
+
+ n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
+ n->next = NULL;
+ n->name = name;
+ n->type = exp_get_value_int (type, 0, "program header type",
+ lang_final_phase_enum);
+ n->filehdr = filehdr;
+ n->phdrs = phdrs;
+ n->at = at;
+ n->flags = flags;
+
+ for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
+ ;
+ *pp = n;
+}
+
+/* Record the program header information in the output BFD. FIXME: We
+ should not be calling an ELF specific function here. */
+
+static void
+lang_record_phdrs ()
+{
+ unsigned int alc;
+ asection **secs;
+ struct lang_output_section_phdr_list *last;
+ struct lang_phdr *l;
+ lang_statement_union_type *u;
+
+ alc = 10;
+ secs = (asection **) xmalloc (alc * sizeof (asection *));
+ last = NULL;
+ for (l = lang_phdr_list; l != NULL; l = l->next)
+ {
+ unsigned int c;
+ flagword flags;
+ bfd_vma at;
+
+ c = 0;
+ for (u = lang_output_section_statement.head;
+ u != NULL;
+ u = u->output_section_statement.next)
+ {
+ lang_output_section_statement_type *os;
+ struct lang_output_section_phdr_list *pl;
+
+ os = &u->output_section_statement;
+
+ pl = os->phdrs;
+ if (pl != NULL)
+ last = pl;
+ else
+ {
+ if (os->sectype == noload_section
+ || os->bfd_section == NULL
+ || (os->bfd_section->flags & SEC_ALLOC) == 0)
+ continue;
+ pl = last;
+ }
+
+ if (os->bfd_section == NULL)
+ continue;
+
+ for (; pl != NULL; pl = pl->next)
+ {
+ if (strcmp (pl->name, l->name) == 0)
+ {
+ if (c >= alc)
+ {
+ alc *= 2;
+ secs = ((asection **)
+ xrealloc (secs, alc * sizeof (asection *)));
+ }
+ secs[c] = os->bfd_section;
+ ++c;
+ pl->used = true;
+ }
+ }
+ }
+
+ if (l->flags == NULL)
+ flags = 0;
+ else
+ flags = exp_get_vma (l->flags, 0, "phdr flags",
+ lang_final_phase_enum);
+
+ if (l->at == NULL)
+ at = 0;
+ else
+ at = exp_get_vma (l->at, 0, "phdr load address",
+ lang_final_phase_enum);
+
+ if (! bfd_record_phdr (output_bfd, l->type,
+ l->flags == NULL ? false : true,
+ flags,
+ l->at == NULL ? false : true,
+ at, l->filehdr, l->phdrs, c, secs))
+ einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
+ }
+
+ free (secs);
+
+ /* Make sure all the phdr assignments succeeded. */
+ for (u = lang_output_section_statement.head;
+ u != NULL;
+ u = u->output_section_statement.next)
+ {
+ struct lang_output_section_phdr_list *pl;
+
+ if (u->output_section_statement.bfd_section == NULL)
+ continue;
+
+ for (pl = u->output_section_statement.phdrs;
+ pl != NULL;
+ pl = pl->next)
+ if (! pl->used && strcmp (pl->name, "NONE") != 0)
+ einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
+ u->output_section_statement.name, pl->name);
+ }
+}
+
+/* Record a list of sections which may not be cross referenced. */
+
+void
+lang_add_nocrossref (l)
+ struct lang_nocrossref *l;
+{
+ struct lang_nocrossrefs *n;
+
+ n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
+ n->next = nocrossref_list;
+ n->list = l;
+ nocrossref_list = n;
+
+ /* Set notice_all so that we get informed about all symbols. */
+ link_info.notice_all = true;
+}
+\f
+/* Overlay handling. We handle overlays with some static variables. */
+
+/* The overlay virtual address. */
+static etree_type *overlay_vma;
+
+/* The overlay load address. */
+static etree_type *overlay_lma;
+
+/* Whether nocrossrefs is set for this overlay. */
+static int overlay_nocrossrefs;
+
+/* An expression for the maximum section size seen so far. */
+static etree_type *overlay_max;
+
+/* A list of all the sections in this overlay. */
+
+struct overlay_list
+{
+ struct overlay_list *next;
+ lang_output_section_statement_type *os;
+};
+
+static struct overlay_list *overlay_list;
+
+/* Start handling an overlay. */
+
+void
+lang_enter_overlay (vma_expr, lma_expr, nocrossrefs)
+ etree_type *vma_expr;
+ etree_type *lma_expr;
+ int nocrossrefs;
+{
+ /* The grammar should prevent nested overlays from occurring. */
+ ASSERT (overlay_vma == NULL
+ && overlay_lma == NULL
+ && overlay_list == NULL
+ && overlay_max == NULL);
+
+ overlay_vma = vma_expr;
+ overlay_lma = lma_expr;
+ overlay_nocrossrefs = nocrossrefs;
+}
+
+/* Start a section in an overlay. We handle this by calling
+ lang_enter_output_section_statement with the correct VMA and LMA. */
+
+void
+lang_enter_overlay_section (name)
+ const char *name;
+{
+ struct overlay_list *n;
+ etree_type *size;
+
+ lang_enter_output_section_statement (name, overlay_vma, normal_section,
+ 0, 0, 0, overlay_lma);
+
+ /* If this is the first section, then base the VMA and LMA of future
+ sections on this one. This will work correctly even if `.' is
+ used in the addresses. */
+ if (overlay_list == NULL)
+ {
+ overlay_vma = exp_nameop (ADDR, name);
+ overlay_lma = exp_nameop (LOADADDR, name);
+ }
+
+ /* Remember the section. */
+ n = (struct overlay_list *) xmalloc (sizeof *n);
+ n->os = current_section;
+ n->next = overlay_list;
+ overlay_list = n;
+
+ size = exp_nameop (SIZEOF, name);
+
+ /* Adjust the LMA for the next section. */
+ overlay_lma = exp_binop ('+', overlay_lma, size);
+
+ /* Arrange to work out the maximum section end address. */
+ if (overlay_max == NULL)
+ overlay_max = size;
+ else
+ overlay_max = exp_binop (MAX_K, overlay_max, size);
+}
+
+/* Finish a section in an overlay. There isn't any special to do
+ here. */
+
+void
+lang_leave_overlay_section (fill, phdrs)
+ bfd_vma fill;
+ struct lang_output_section_phdr_list *phdrs;
+{
+ const char *name;
+ char *clean, *s2;
+ const char *s1;
+ char *buf;
+
+ name = current_section->name;
+
+ lang_leave_output_section_statement (fill, "*default*", phdrs);
+
+ /* Define the magic symbols. */
+
+ clean = xmalloc (strlen (name) + 1);
+ s2 = clean;
+ for (s1 = name; *s1 != '\0'; s1++)
+ if (isalnum ((unsigned char) *s1) || *s1 == '_')
+ *s2++ = *s1;
+ *s2 = '\0';
+
+ buf = xmalloc (strlen (clean) + sizeof "__load_start_");
+ sprintf (buf, "__load_start_%s", clean);
+ lang_add_assignment (exp_assop ('=', buf,
+ exp_nameop (LOADADDR, name)));
+
+ buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
+ sprintf (buf, "__load_stop_%s", clean);
+ lang_add_assignment (exp_assop ('=', buf,
+ exp_binop ('+',
+ exp_nameop (LOADADDR, name),
+ exp_nameop (SIZEOF, name))));
+
+ free (clean);
+}
+
+/* Finish an overlay. If there are any overlay wide settings, this
+ looks through all the sections in the overlay and sets them. */
+
+void
+lang_leave_overlay (fill, memspec, phdrs)
+ bfd_vma fill;
+ const char *memspec;
+ struct lang_output_section_phdr_list *phdrs;
+{
+ lang_memory_region_type *region;
+ struct overlay_list *l;
+ struct lang_nocrossref *nocrossref;
+
+ if (memspec == NULL)
+ region = NULL;
+ else
+ region = lang_memory_region_lookup (memspec);
+
+ nocrossref = NULL;
+
+ l = overlay_list;
+ while (l != NULL)
+ {
+ struct overlay_list *next;
+
+ if (fill != 0 && l->os->fill == 0)
+ l->os->fill = fill;
+ if (region != NULL && l->os->region == NULL)
+ l->os->region = region;
+ if (phdrs != NULL && l->os->phdrs == NULL)
+ l->os->phdrs = phdrs;
+
+ if (overlay_nocrossrefs)
+ {
+ struct lang_nocrossref *nc;
+
+ nc = (struct lang_nocrossref *) xmalloc (sizeof *nc);
+ nc->name = l->os->name;
+ nc->next = nocrossref;
+ nocrossref = nc;
+ }
+
+ next = l->next;
+ free (l);
+ l = next;
+ }
+
+ if (nocrossref != NULL)
+ lang_add_nocrossref (nocrossref);
+
+ /* Update . for the end of the overlay. */
+ lang_add_assignment (exp_assop ('=', ".",
+ exp_binop ('+', overlay_vma, overlay_max)));
+
+ overlay_vma = NULL;
+ overlay_lma = NULL;
+ overlay_nocrossrefs = 0;
+ overlay_list = NULL;
+ overlay_max = NULL;
+}
+\f
+/* Version handling. This is only useful for ELF. */
+
+/* This global variable holds the version tree that we build. */
+
+struct bfd_elf_version_tree *lang_elf_version_info;
+
+static int
+lang_vers_match_lang_c (expr, sym)
+ struct bfd_elf_version_expr *expr;
+ const char *sym;
+{
+ if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
+ return 1;
+ return fnmatch (expr->pattern, sym, 0) == 0;
+}
+
+static int
+lang_vers_match_lang_cplusplus (expr, sym)
+ struct bfd_elf_version_expr *expr;
+ const char *sym;
+{
+ char *alt_sym;
+ int result;
+
+ if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
+ return 1;
+
+ alt_sym = cplus_demangle(sym, /* DMGL_NO_TPARAMS */ 0);
+ if (!alt_sym)
+ {
+ /* cplus_demangle (also) returns NULL when it is not a C++ symbol.
+ Should we early out false in this case? */
+ result = fnmatch (expr->pattern, sym, 0) == 0;
+ }
+ else
+ {
+ result = fnmatch (expr->pattern, alt_sym, 0) == 0;
+ free (alt_sym);
+ }
+
+ return result;
+}
+
+static int
+lang_vers_match_lang_java (expr, sym)
+ struct bfd_elf_version_expr *expr;
+ const char *sym;
+{
+ char *alt_sym;
+ int result;
+
+ if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
+ return 1;
+
+ alt_sym = cplus_demangle(sym, DMGL_JAVA);
+ if (!alt_sym)
+ {
+ /* cplus_demangle (also) returns NULL when it is not a Java symbol.
+ Should we early out false in this case? */
+ result = fnmatch (expr->pattern, sym, 0) == 0;
+ }
+ else
+ {
+ result = fnmatch (expr->pattern, alt_sym, 0) == 0;
+ free (alt_sym);
+ }
+
+ return result;
+}
+
+/* This is called for each variable name or match expression. */
+
+struct bfd_elf_version_expr *
+lang_new_vers_regex (orig, new, lang)
+ struct bfd_elf_version_expr *orig;
+ const char *new;
+ const char *lang;
+{
+ struct bfd_elf_version_expr *ret;
+
+ ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
+ ret->next = orig;
+ ret->pattern = new;
+
+ if (lang == NULL || strcasecmp (lang, "C") == 0)
+ ret->match = lang_vers_match_lang_c;
+ else if (strcasecmp (lang, "C++") == 0)
+ ret->match = lang_vers_match_lang_cplusplus;
+ else if (strcasecmp (lang, "Java") == 0)
+ ret->match = lang_vers_match_lang_java;
+ else
+ {
+ einfo (_("%X%P: unknown language `%s' in version information\n"),
+ lang);
+ ret->match = lang_vers_match_lang_c;
+ }
+
+ return ret;
+}
+
+/* This is called for each set of variable names and match
+ expressions. */
+
+struct bfd_elf_version_tree *
+lang_new_vers_node (globals, locals)
+ struct bfd_elf_version_expr *globals;
+ struct bfd_elf_version_expr *locals;
+{
+ struct bfd_elf_version_tree *ret;
+
+ ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret);
+ ret->next = NULL;
+ ret->name = NULL;
+ ret->vernum = 0;
+ ret->globals = globals;
+ ret->locals = locals;
+ ret->deps = NULL;
+ ret->name_indx = (unsigned int) -1;
+ ret->used = 0;
+ return ret;
+}
+
+/* This static variable keeps track of version indices. */
+
+static int version_index;
+
+/* This is called when we know the name and dependencies of the
+ version. */
+
+void
+lang_register_vers_node (name, version, deps)
+ const char *name;
+ struct bfd_elf_version_tree *version;
+ struct bfd_elf_version_deps *deps;
+{
+ struct bfd_elf_version_tree *t, **pp;
+ struct bfd_elf_version_expr *e1;
+
+ /* Make sure this node has a unique name. */
+ for (t = lang_elf_version_info; t != NULL; t = t->next)
+ if (strcmp (t->name, name) == 0)
+ einfo (_("%X%P: duplicate version tag `%s'\n"), name);
+
+ /* Check the global and local match names, and make sure there
+ aren't any duplicates. */
+
+ for (e1 = version->globals; e1 != NULL; e1 = e1->next)
+ {
+ for (t = lang_elf_version_info; t != NULL; t = t->next)
+ {
+ struct bfd_elf_version_expr *e2;
+
+ for (e2 = t->locals; e2 != NULL; e2 = e2->next)
+ if (strcmp (e1->pattern, e2->pattern) == 0)
+ einfo (_("%X%P: duplicate expression `%s' in version information\n"),
+ e1->pattern);
+ }
+ }
+
+ for (e1 = version->locals; e1 != NULL; e1 = e1->next)
+ {
+ for (t = lang_elf_version_info; t != NULL; t = t->next)
+ {
+ struct bfd_elf_version_expr *e2;
+
+ for (e2 = t->globals; e2 != NULL; e2 = e2->next)
+ if (strcmp (e1->pattern, e2->pattern) == 0)
+ einfo (_("%X%P: duplicate expression `%s' in version information\n"),
+ e1->pattern);
+ }
+ }
+
+ version->deps = deps;
+ version->name = name;
+ ++version_index;
+ version->vernum = version_index;
+
+ for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
+ ;
+ *pp = version;
+}
+
+/* This is called when we see a version dependency. */
+
+struct bfd_elf_version_deps *
+lang_add_vers_depend (list, name)
+ struct bfd_elf_version_deps *list;
+ const char *name;
+{
+ struct bfd_elf_version_deps *ret;
+ struct bfd_elf_version_tree *t;
+
+ ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
+ ret->next = list;
+
+ for (t = lang_elf_version_info; t != NULL; t = t->next)
+ {
+ if (strcmp (t->name, name) == 0)
+ {
+ ret->version_needed = t;
+ return ret;
+ }
+ }
+
+ einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
+
+ return ret;
+}
+
+static void
+lang_do_version_exports_section ()
+{
+ struct bfd_elf_version_expr *greg = NULL, *lreg;
+
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
+ char *contents, *p;
+ bfd_size_type len;
+
+ if (sec == NULL)
+ continue;
+
+ len = bfd_section_size (is->the_bfd, sec);
+ contents = xmalloc (len);
+ if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
+ einfo (_("%X%P: unable to read .exports section contents"), sec);
+
+ p = contents;
+ while (p < contents+len)
+ {
+ greg = lang_new_vers_regex (greg, p, NULL);
+ p = strchr (p, '\0') + 1;
+ }
+
+ /* Do not free the contents, as we used them creating the regex. */
+
+ /* Do not include this section in the link. */
+ bfd_set_section_flags (is->the_bfd, sec,
+ bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE);
+ }
+
+ lreg = lang_new_vers_regex (NULL, "*", NULL);
+ lang_register_vers_node (command_line.version_exports_section,
+ lang_new_vers_node (greg, lreg), NULL);
}