/* Linker command language support.
- Copyright 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993 Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
#include "bfd.h"
#include "sysdep.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"
+
/* FORWARDS */
static void print_statements PARAMS ((void));
static void print_statement PARAMS ((lang_statement_union_type *,
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 int longest_section_name = 8;
static lang_statement_list_type statement_list;
+static void print_size PARAMS ((size_t value));
+static void print_alignment PARAMS ((unsigned int value));
+static void print_fill PARAMS ((fill_type value));
+static void print_section PARAMS ((const char *name));
+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));
+static void print_flags PARAMS ((int *ignore_flags));
+static void init_os PARAMS ((lang_output_section_statement_type *s));
+static void wild_doit PARAMS ((lang_statement_list_type *ptr,
+ asection *section,
+ lang_output_section_statement_type *output,
+ lang_input_statement_type *file));
+static asection *our_bfd_get_section_by_name PARAMS ((bfd *abfd,
+ const char *section));
+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 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));
+static void lang_reasonable_defaults PARAMS ((void));
+static void lang_place_undefineds PARAMS ((void));
+static void lang_create_output_section_statements 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 void print_symbol PARAMS ((asymbol *q));
+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_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_statement 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 bfd_vma lang_size_sections
+ PARAMS ((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));
+static bfd_vma lang_do_assignments
+ PARAMS ((lang_statement_union_type * s,
+ lang_output_section_statement_type *output_section_statement,
+ fill_type fill,
+ bfd_vma dot));
+static void lang_finish PARAMS ((void));
+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 reset_memory_regions 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;
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;
etree_type *base; /* Relocation base - or null */
#define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
-void lang_add_data PARAMS ((int type, union etree_union * exp));
-
PTR
stat_alloc (size)
size_t 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)
+print_fill (value)
+ fill_type value;
{
fprintf (config.map_file, "%04x", (unsigned) value);
}
-
static void
print_section (name)
- CONST char *CONST name;
+ CONST char *name;
{
fprintf (config.map_file, "%*s", -longest_section_name, name);
}
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)
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;
+ CONST char *name;
+ lang_input_file_enum_type file_type;
+ CONST char *target;
{
lang_input_statement_type *p = new_stat (lang_input_statement,
p->next = (lang_statement_union_type *) NULL;
p->symbol_count = 0;
p->common_output_section = (asection *) NULL;
+ p->loaded = false;
lang_statement_append (&input_file_chain,
(lang_statement_union_type *) p,
&p->next_real_file);
{
/* Look it up or build a new one */
lang_has_input_file = true;
+
#if 0
lang_input_statement_type *p;
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;
-}
-
/* Build enough state so that the parser can build its tree */
void
lang_init ()
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);
+ fprintf (config.map_file, " %2d%% ",
+ (int) ((m->current - m->origin) * 100 / m->old_length));
print_flags (&m->flags);
fprintf (config.map_file, "\n");
}
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;
if ((section->flags & SEC_SHARED_LIBRARY) != 0)
section->output_section->flags |= section->flags;
else
- section->output_section->flags |= section->flags & ~SEC_NEVER_LOAD;
+ section->output_section->flags |=
+ section->flags & (flagword) (~ SEC_NEVER_LOAD);
if (!output->loadable)
{
static
lang_input_statement_type *
lookup_name (name)
- CONST char *CONST name;
+ CONST char *name;
{
lang_input_statement_type *search;
search = (lang_input_statement_type *) search->next_real_file)
{
if (search->filename == (char *) NULL && name == (char *) NULL)
- {
- return search;
- }
- if (search->filename != (char *) NULL && name != (char *) NULL)
- {
- if (strcmp (search->filename, name) == 0)
- {
- ldmain_open_file_read_symbol (search);
- return search;
- }
- }
+ return search;
+ if (search->filename != (char *) NULL
+ && name != (char *) NULL
+ && strcmp (search->filename, name) == 0)
+ break;
}
- /* 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;
+ if (search == (lang_input_statement_type *) NULL)
+ {
+ /* 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);
+ }
+
+ /* 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;
+
+ ldfile_open_file (search);
+
+ if (bfd_check_format (search->the_bfd, bfd_object))
+ {
+ ldlang_add_file (search);
+ if (trace_files || trace_file_tries)
+ info_msg ("%I\n", search);
+ }
+ else if (bfd_check_format (search->the_bfd, bfd_archive))
+ {
+ /* There is nothing to do here; the add_symbols routine will
+ call ldlang_add_file (via the add_archive_element callback)
+ for each element of the archive which is used. */
+ }
+ else
+ einfo ("%F%B: file not recognized: %E\n", search->the_bfd);
+ bfd_set_gp_size (search->the_bfd, g_switch_value);
+ if (bfd_link_add_symbols (search->the_bfd, &link_info) == false)
+ einfo ("%F%B: could not read symbols: %E\n", search->the_bfd);
+
+ search->loaded = true;
+
+ return search;
}
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;
+ CONST char *section;
+ CONST char *file;
+ CONST char *target;
lang_output_section_statement_type * output;
{
lang_input_statement_type *f;
{
wild_section (s, section, f, output);
}
- /* Once more for the script file */
- wild_section(s, section, script_file, output);
}
else
{
/*
read in all the files
*/
+
static bfd *
open_output (name)
- CONST char *CONST name;
+ CONST char *name;
{
- extern unsigned long ldfile_output_machine;
- extern enum bfd_architecture ldfile_output_architecture;
-
- extern CONST char *output_filename;
bfd *output;
if (output_target == (char *) NULL)
output_target = default_target;
}
output = bfd_openw (name, output_target);
- output_filename = name;
if (output == (bfd *) NULL)
{
if (bfd_error == invalid_target)
{
- einfo ("%P%F target %s not found\n", output_target);
+ einfo ("%P%F: target %s not found\n", output_target);
}
- einfo ("%P%F problem opening output file %s, %E\n", name);
+ einfo ("%P%F: cannot open output file %s: %E\n", name);
}
+ delete_output_file_on_failure = 1;
+
/* output->flags |= D_PAGED;*/
- bfd_set_format (output, bfd_object);
- bfd_set_arch_mach (output,
- ldfile_output_architecture,
- ldfile_output_machine);
+ 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;
static void
lang_reasonable_defaults ()
{
-
-
-
#if 0
lang_output_section_statement_lookup (".text");
lang_output_section_statement_lookup (".data");
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");
+ 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);
+ }
}
}
}
-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)
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",
+ einfo ("%P%F: cannot 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;
fprintf (config.map_file, " ");
print_address (outside_symbol_address (q));
fprintf (config.map_file, " %s", q->name ? q->name : " ");
+ if (q->flags & BSF_WEAK)
+ fprintf (config.map_file, " *weak*");
print_nl ();
}
{
asymbol *q = *p;
- if (bfd_get_section (q) == i && q->flags & BSF_GLOBAL)
+ if (bfd_get_section (q) == i
+ && (q->flags & (BSF_GLOBAL | BSF_WEAK)) != 0)
{
print_symbol (q);
}
fprintf (config.map_file, "LONG ");
print_dot += LONG_SIZE;
break;
+ case QUAD:
+ fprintf (config.map_file, "QUAD ");
+ print_dot += QUAD_SIZE;
+ break;
}
exp_print_tree (data->exp);
}
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
/* 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;
static boolean had_relax;
static bfd_vma
-DEFUN (lang_size_sections, (s, output_section_statement, prev, fill, dot, relax),
- lang_statement_union_type * s AND
- lang_output_section_statement_type * output_section_statement AND
- lang_statement_union_type ** prev AND
- unsigned short fill AND
- bfd_vma dot AND
- boolean relax)
+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)
/* 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,
+ /* The coercion here is important, see ld.h. */
+ (bfd_vma) os->block_value);
os->bfd_section->_raw_size = after - os->bfd_section->vma;
dot = os->bfd_section->vma + os->bfd_section->_raw_size;
> os->region->origin + os->region->length)
|| ( os->region->origin > os->region->current ))
{
- einfo ("%X%P: Region %s is full (%B section %s)\n",
+ einfo ("%X%P: region %s is full (%B section %s)\n",
os->region->name,
os->bfd_section->owner,
os->bfd_section->name);
switch (s->data_statement.type)
{
+ case QUAD:
+ size = QUAD_SIZE;
+ break;
case LONG:
size = LONG_SIZE;
break;
break;
case lang_object_symbols_statement_enum:
- create_object_symbols = output_section_statement;
+ link_info.create_object_symbols_section =
+ output_section_statement->bfd_section;
break;
case lang_output_statement_enum:
case lang_target_statement_enum:
case lang_input_section_enum:
if (relax)
{
- relaxing = true;
+ lang_input_section_type *is;
+ asection *i;
- if( relax_section (prev))
- had_relax = true;
- relaxing = false;
+ is = &(*prev)->input_section;
+ i = is->section;
+ /* FIXME: The interface to bfd_relax_section should be changed
+ to not require the generic symbols to be read. Changing
+ this would require changing both b_out_relax_section and
+ bfd_coff_relax16_section. */
+ if (is->ifile->asymbols == (asymbol **) NULL)
+ {
+ unsigned int symsize;
+
+ symsize = get_symtab_upper_bound (i->owner);
+ is->ifile->asymbols = (asymbol **) ldmalloc (symsize);
+ is->ifile->symbol_count =
+ bfd_canonicalize_symtab (i->owner, is->ifile->asymbols);
+
+ /* The generic linker code in BFD requires that these
+ symbols be stored in the outsymbols and symcount
+ fields. When the bfd_relax_section is interface is
+ fixed this should also be fixed. */
+ i->owner->outsymbols = is->ifile->asymbols;
+ i->owner->symcount = is->ifile->symbol_count;
+ }
+
+ if (bfd_relax_section (i->owner, i, &link_info, is->ifile->asymbols))
+ had_relax = true;
}
else {
(*prev)->input_section.section->_cooked_size =
}
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)
+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)
lang_final_phase_enum, dot, &dot);
s->data_statement.value = value.value;
if (value.valid == false)
- einfo ("%F%P: Invalid data statement\n");
+ einfo ("%F%P: invalid data statement\n");
}
switch (s->data_statement.type)
{
+ case QUAD:
+ dot += QUAD_SIZE;
+ break;
case LONG:
dot += LONG_SIZE;
break;
return dot;
}
-
-
-static void
-lang_relocate_globals ()
-{
- /*
- Each ldsym_type maintains a chain of pointers to asymbols which
- references the definition. Replace each pointer to the referenence
- with a pointer to only one place, preferably the definition. If
- the defintion isn't available then the common symbol, and if
- there isn't one of them then choose one reference.
- */
-
- FOR_EACH_LDSYM (lgs)
- {
- asymbol *it;
-
- /* Skip indirect symbols. */
- if (lgs->flags & SYM_INDIRECT)
- continue;
-
- 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);
- }
-
- while (ptr != (asymbol **) NULL
- && ptr != prev)
- {
- asymbol *ref = *ptr;
- prev = ptr;
- *ptr = it;
- ptr = (asymbol **) (ref->udata);
- }
- }
- }
-}
-
-
-
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 = link_info.relocateable ? false : true;
- /* We can set the entry address*/
- bfd_set_start_address (output_bfd,
- outside_symbol_address (sy));
+ if (entry_symbol == (char *) NULL)
+ {
+ /* No entry has been specified. Look for start, but don't warn
+ if we don't find it. */
+ entry_symbol = "start";
+ 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)
+ 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)
{
- if (warn)
- einfo ("%P: Warning, can't find entry symbol %s, defaulting to %V\n",
- entry_symbol, ts->vma);
+ bfd_vma val;
- bfd_set_start_address (output_bfd, ts->vma);
+ 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);
+ asection *ts;
+
+ /* Can't find the entry symbol. 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 */
else
{
- info ("%P: warning, %s architecture of input file `%B' incompatible with %s output\n",
+ 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));
- bfd_set_arch_mach (output_bfd,
- input_architecture,
- input_machine);
+ if (! bfd_set_arch_mach (output_bfd,
+ input_architecture,
+ input_machine))
+ einfo ("%P%F:%s: can't set architecture: %E\n",
+ bfd_get_filename (output_bfd));
}
}
}
-/*
- * 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;
+ unsigned 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 = 1; power <= 16; power <<= 1)
+ bfd_link_hash_traverse (link_info.hash, lang_one_common,
+ (PTR) &power);
+ }
+}
- /* Fix the size of the common section */
+/* Place one common symbol in the correct section. */
- com->section->_raw_size =
- ALIGN_N (com->section->_raw_size, align);
+static boolean
+lang_one_common (h, info)
+ struct bfd_link_hash_entry *h;
+ PTR info;
+{
+ unsigned int power_of_two;
+ bfd_vma size;
+ size_t align;
+ asection *section;
- /* Remember if this is the biggest alignment ever seen */
- if (power_of_two > com->section->alignment_power)
- {
- com->section->alignment_power = power_of_two;
- }
+ if (h->type != bfd_link_hash_common)
+ return true;
- /* Symbol stops being common and starts being global, but
- we remember that it was common once. */
+ size = h->u.c.size;
+ switch (size)
+ {
+ case 0:
+ case 1:
+ power_of_two = 0;
+ align = 1;
+ 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 && align != *(unsigned int *) info)
+ return true;
- com->flags = BSF_EXPORT | BSF_GLOBAL | BSF_OLD_COMMON;
- com->value = com->section->_raw_size;
+ section = h->u.c.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->_raw_size = ALIGN_N (section->_raw_size, align);
- 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->_raw_size;
- }
- }
- }
+ /* Increase the size of the section. */
+ section->_raw_size += size;
+ if (write_map && config.map_file != NULL)
+ fprintf (config.map_file, "Allocating common %s: %lx at %lx %s\n",
+ h->root.string, (unsigned long) size,
+ (unsigned long) h->u.def.value, section->owner->filename);
+ return true;
}
/*
/* This is a lonely common section which must
have come from an archive. We attatch to the
section with the wildcard */
- if (config.relocateable_output != true
- && command_line.force_common_definition == false)
+ if (! link_info.relocateable
+ && ! command_line.force_common_definition)
{
if (default_common_section ==
(lang_output_section_statement_type *) NULL)
{
- info ("%P: No [COMMON] command, defaulting to .bss\n");
+ info_msg ("%P: no [COMMON] command, defaulting to .bss\n");
default_common_section =
lang_output_section_statement_lookup (".bss");
/* ptr->flag_loadable= state;*/
break;
default:
- einfo ("%P%F illegal syntax in flags\n");
+ einfo ("%P%F: invalid syntax in flags\n");
break;
}
flags++;
}
}
+#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;
}
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;
+ int x;
{
unsigned int i = 1;
int l;
void
lang_enter_output_section_statement (output_section_statement_name,
address_exp, flags, block_value,
- align, subalign, base)
- char *output_section_statement_name;
+ align, subalign, ebase)
+ const char *output_section_statement_name;
etree_type * address_exp;
int flags;
bfd_vma block_value;
etree_type *align;
etree_type *subalign;
- etree_type *base;
+ etree_type *ebase;
{
lang_output_section_statement_type *os;
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 */
}
}
-
-
-asymbol *
-DEFUN (create_symbol, (name, flags, section),
- CONST char *name AND
- flagword flags AND
- asection * section)
-{
- extern lang_input_statement_type *script_file;
- asymbol **def_ptr = (asymbol **) stat_alloc ((bfd_size_type) (sizeof (asymbol **)));
-
- /* Add this definition to script file */
- asymbol *def = (asymbol *) bfd_make_empty_symbol (script_file->the_bfd);
- def->name = buystring (name);
- def->udata = 0;
- def->flags = flags;
- def->section = section;
- *def_ptr = def;
- Q_enter_global_ref (def_ptr, name);
- return def;
-}
-
void
lang_process ()
{
- if (had_script == false)
- {
- /* Read the emulation's appropriate default script. */
- char *scriptname = ldemul_get_script ();
- size_t size = strlen (scriptname) + 13;
- char *buf = (char *) ldmalloc(size);
-
- sprintf (buf, "-Tldscripts/%s", scriptname);
- parse_line (buf, 0);
- free (buf);
- }
-
lang_reasonable_defaults ();
current_target = default_target;
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 ();
current_target = default_target;
lang_for_each_statement (open_input_bfds);
+ /* Build all sets based on the information gathered from the input
+ files. */
+ ldctor_build_sets ();
+
/* 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);
/* 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,
&(statement_list.head), 0, (bfd_vma) 0, false);
+ reset_memory_regions ();
- /* 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);
+ /* Do all the assignments, now that we know the final resting
+ places of all the symbols. */
+ 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 */
+ globals are, so can make better guess. */
lang_size_sections (statement_list.head,
(lang_output_section_statement_type *) NULL,
&(statement_list.head), 0, (bfd_vma) 0, true);
-
-
-
}
-
else
{
- /* Size up the sections */
+ /* 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 ();
/* Do all the assignments, now that we know the final restingplaces
lang_do_assignments (statement_list.head,
abs_output_section,
- 0, (bfd_vma) 0);
-
-
- /* Move the global symbols around */
- lang_relocate_globals ();
+ (fill_type) 0, (bfd_vma) 0);
/* Make sure that we're not mixing architectures */
lang_check ();
/* Final stuffs */
+
+ ldemul_finish ();
+
+#if 0
+ /* DO NOT REENABLE THIS CALL. IF THIS CALL IS MADE, THE SUN4 LINKER
+ CAN NOT BOOTSTRAP!! No, I don't know why, but don't change it
+ unless you fix it. */
+ /* Size up the sections. */
+ lang_size_sections (statement_list.head,
+ abs_output_section,
+ &(statement_list.head), 0, (bfd_vma) 0, false);
+#endif
+
lang_finish ();
}
{
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;
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;
}
}
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;
}
}
CONST char *format;
int from_script;
{
- if (!from_script || output_target == NULL)
+ if (output_target == NULL || !from_script)
output_target = format;
}
projects / deliverable / binutils-gdb.git / blobdiff