/* Linker command language support.
- Copyright 1991-2013 Free Software Foundation, Inc.
+ Copyright (C) 1991-2014 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
#include "demangle.h"
#include "hashtab.h"
#include "libbfd.h"
+#include "elf-bfd.h"
#ifdef ENABLE_PLUGINS
#include "plugin.h"
#endif /* ENABLE_PLUGINS */
#define obstack_chunk_free free
static const char *entry_symbol_default = "start";
static bfd_boolean placed_commons = FALSE;
-static bfd_boolean stripped_excluded_sections = FALSE;
+static bfd_boolean map_head_is_link_order = FALSE;
static lang_output_section_statement_type *default_common_section;
static bfd_boolean map_option_f;
static bfd_vma print_dot;
DEFINED() need to increment this at the start of the traversal. */
int lang_statement_iteration = 0;
-etree_type *base; /* Relocation base - or null */
-
/* 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
p->flags.whole_archive = input_flags.whole_archive;
p->flags.sysrooted = input_flags.sysrooted;
- if (file_type == lang_input_file_is_l_enum
- && name[0] == ':' && name[1] != '\0')
- {
- file_type = lang_input_file_is_search_file_enum;
- name = name + 1;
- }
-
switch (file_type)
{
case lang_input_file_is_symbols_only_enum:
p->local_sym_name = name;
break;
case lang_input_file_is_l_enum:
- p->filename = name;
+ if (name[0] == ':' && name[1] != '\0')
+ {
+ p->filename = name + 1;
+ p->flags.full_name_provided = TRUE;
+ }
+ else
+ p->filename = name;
p->local_sym_name = concat ("-l", name, (const char *) NULL);
p->flags.maybe_archive = TRUE;
p->flags.real = TRUE;
lang_input_file_enum_type file_type,
const char *target)
{
+ if (name != NULL && *name == '=')
+ {
+ lang_input_statement_type *ret;
+ char *sysrooted_name
+ = concat (ld_sysroot, name + 1, (const char *) NULL);
+
+ /* We've now forcibly prepended the sysroot, making the input
+ file independent of the context. Therefore, temporarily
+ force a non-sysrooted context for this statement, so it won't
+ get the sysroot prepended again when opened. (N.B. if it's a
+ script, any child nodes with input files starting with "/"
+ will be handled as "sysrooted" as they'll be found to be
+ within the sysroot subdirectory.) */
+ unsigned int outer_sysrooted = input_flags.sysrooted;
+ input_flags.sysrooted = 0;
+ ret = new_afile (sysrooted_name, file_type, target, TRUE);
+ input_flags.sysrooted = outer_sysrooted;
+ return ret;
+ }
+
return new_afile (name, file_type, target, TRUE);
}
void
lang_finish (void)
{
- bfd_link_hash_table_free (link_info.output_bfd, link_info.hash);
bfd_hash_table_free (&lang_definedness_table);
output_section_statement_table_free ();
}
lang_match_sec_type_func match_type)
{
lang_output_section_statement_type *first, *look, *found;
- flagword flags;
+ flagword look_flags, sec_flags, differ;
/* We know the first statement on this list is *ABS*. May as well
skip it. */
first = first->next;
/* First try for an exact match. */
+ sec_flags = sec->flags;
found = NULL;
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY
+ | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
found = look;
}
if (found != NULL)
return found;
}
- if ((sec->flags & SEC_CODE) != 0
- && (sec->flags & SEC_ALLOC) != 0)
+ if ((sec_flags & SEC_CODE) != 0
+ && (sec_flags & SEC_ALLOC) != 0)
{
/* Try for a rw code section. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
+ | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
found = look;
}
}
- else if ((sec->flags & (SEC_READONLY | SEC_THREAD_LOCAL)) != 0
- && (sec->flags & SEC_ALLOC) != 0)
+ else if ((sec_flags & SEC_READONLY) != 0
+ && (sec_flags & SEC_ALLOC) != 0)
{
/* .rodata can go after .text, .sdata2 after .rodata. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_READONLY | SEC_SMALL_DATA))
- || (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_READONLY))
- && !(look->flags & SEC_SMALL_DATA))
- || (!(flags & (SEC_THREAD_LOCAL | SEC_ALLOC))
- && (look->flags & SEC_THREAD_LOCAL)
- && (!(flags & SEC_LOAD)
- || (look->flags & SEC_LOAD))))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
+ | SEC_READONLY | SEC_SMALL_DATA))
+ || (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
+ | SEC_READONLY))
+ && !(look_flags & SEC_SMALL_DATA)))
+ found = look;
+ }
+ }
+ else if ((sec_flags & SEC_THREAD_LOCAL) != 0
+ && (sec_flags & SEC_ALLOC) != 0)
+ {
+ /* .tdata can go after .data, .tbss after .tdata. Treat .tbss
+ as if it were a loaded section, and don't use match_type. */
+ bfd_boolean seen_thread_local = FALSE;
+
+ match_type = NULL;
+ for (look = first; look; look = look->next)
+ {
+ look_flags = look->flags;
+ if (look->bfd_section != NULL)
+ look_flags = look->bfd_section->flags;
+
+ differ = look_flags ^ (sec_flags | SEC_LOAD | SEC_HAS_CONTENTS);
+ if (!(differ & (SEC_THREAD_LOCAL | SEC_ALLOC)))
+ {
+ /* .tdata and .tbss must be adjacent and in that order. */
+ if (!(look_flags & SEC_LOAD)
+ && (sec_flags & SEC_LOAD))
+ /* ..so if we're at a .tbss section and we're placing
+ a .tdata section stop looking and return the
+ previous section. */
+ break;
+ found = look;
+ seen_thread_local = TRUE;
+ }
+ else if (seen_thread_local)
+ break;
+ else if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD)))
found = look;
}
}
- else if ((sec->flags & SEC_SMALL_DATA) != 0
- && (sec->flags & SEC_ALLOC) != 0)
+ else if ((sec_flags & SEC_SMALL_DATA) != 0
+ && (sec_flags & SEC_ALLOC) != 0)
{
/* .sdata goes after .data, .sbss after .sdata. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_THREAD_LOCAL))
- || ((look->flags & SEC_SMALL_DATA)
- && !(sec->flags & SEC_HAS_CONTENTS)))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
+ | SEC_THREAD_LOCAL))
+ || ((look_flags & SEC_SMALL_DATA)
+ && !(sec_flags & SEC_HAS_CONTENTS)))
found = look;
}
}
- else if ((sec->flags & SEC_HAS_CONTENTS) != 0
- && (sec->flags & SEC_ALLOC) != 0)
+ else if ((sec_flags & SEC_HAS_CONTENTS) != 0
+ && (sec_flags & SEC_ALLOC) != 0)
{
/* .data goes after .rodata. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
+ | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
found = look;
}
}
- else if ((sec->flags & SEC_ALLOC) != 0)
+ else if ((sec_flags & SEC_ALLOC) != 0)
{
/* .bss goes after any other alloc section. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
{
- flags = look->bfd_section->flags;
+ look_flags = look->bfd_section->flags;
if (match_type && !match_type (link_info.output_bfd,
look->bfd_section,
sec->owner, sec))
continue;
}
- flags ^= sec->flags;
- if (!(flags & SEC_ALLOC))
+ differ = look_flags ^ sec_flags;
+ if (!(differ & SEC_ALLOC))
found = look;
}
}
/* non-alloc go last. */
for (look = first; look; look = look->next)
{
- flags = look->flags;
+ look_flags = look->flags;
if (look->bfd_section != NULL)
- flags = look->bfd_section->flags;
- flags ^= sec->flags;
- if (!(flags & SEC_DEBUGGING))
+ look_flags = look->bfd_section->flags;
+ differ = look_flags ^ sec_flags;
+ if (!(differ & SEC_DEBUGGING))
found = look;
}
return found;
}
lang_statement_iteration++;
print_statements ();
+
+ ldemul_extra_map_file_text (link_info.output_bfd, &link_info, config.map_file);
}
static bfd_boolean
section->output_section = output->bfd_section;
- if (!link_info.relocatable
- && !stripped_excluded_sections)
+ if (!map_head_is_link_order)
{
asection *s = output->bfd_section->map_tail.s;
output->bfd_section->map_tail.s = section;
break;
case bfd_object:
-#ifdef ENABLE_PLUGINS
if (!entry->flags.reload)
-#endif
ldlang_add_file (entry);
if (trace_files || verbose)
info_msg ("%I\n", entry);
{
lang_statement_union_type **os_tail;
lang_statement_list_type add;
+ bfd *abfd;
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 unless the whole archive
- has been loaded already. Do the same for a rescan. */
+ has been loaded already. Do the same for a rescan.
+ Likewise reload --as-needed shared libs. */
if (mode != OPEN_BFD_NORMAL
#ifdef ENABLE_PLUGINS
&& ((mode & OPEN_BFD_RESCAN) == 0
|| plugin_insert == NULL)
#endif
- && !s->input_statement.flags.whole_archive
&& s->input_statement.flags.loaded
- && s->input_statement.the_bfd != NULL
- && bfd_check_format (s->input_statement.the_bfd,
- bfd_archive))
- s->input_statement.flags.loaded = FALSE;
-#ifdef ENABLE_PLUGINS
- /* When rescanning, reload --as-needed shared libs. */
- else if ((mode & OPEN_BFD_RESCAN) != 0
- && plugin_insert == NULL
- && s->input_statement.flags.loaded
- && s->input_statement.flags.add_DT_NEEDED_for_regular
- && s->input_statement.the_bfd != NULL
- && ((s->input_statement.the_bfd->flags) & DYNAMIC) != 0
- && plugin_should_reload (s->input_statement.the_bfd))
+ && (abfd = s->input_statement.the_bfd) != NULL
+ && ((bfd_get_format (abfd) == bfd_archive
+ && !s->input_statement.flags.whole_archive)
+ || (bfd_get_format (abfd) == bfd_object
+ && ((abfd->flags) & DYNAMIC) != 0
+ && s->input_statement.flags.add_DT_NEEDED_for_regular
+ && bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && (elf_dyn_lib_class (abfd) & DYN_AS_NEEDED) != 0)))
{
s->input_statement.flags.loaded = FALSE;
s->input_statement.flags.reload = TRUE;
}
-#endif
os_tail = lang_output_section_statement.tail;
lang_list_init (&add);
}
}
- /* TODO: Don't just junk map_head.s, turn them into link_orders. */
- output_section->map_head.link_order = NULL;
- output_section->map_tail.link_order = NULL;
-
if (exclude)
{
/* We don't set bfd_section to NULL since bfd_section of the
link_info.output_bfd->section_count--;
}
}
+}
+
+/* Called from ldwrite to clear out asection.map_head and
+ asection.map_tail for use as link_orders in ldwrite.
+ FIXME: Except for sh64elf.em which starts creating link_orders in
+ its after_allocation routine so needs to call it early. */
+
+void
+lang_clear_os_map (void)
+{
+ lang_output_section_statement_type *os;
+
+ if (map_head_is_link_order)
+ return;
+
+ for (os = &lang_output_section_statement.head->output_section_statement;
+ os != NULL;
+ os = os->next)
+ {
+ asection *output_section;
+
+ if (os->constraint < 0)
+ continue;
+
+ output_section = os->bfd_section;
+ if (output_section == NULL)
+ continue;
+
+ /* TODO: Don't just junk map_head.s, turn them into link_orders. */
+ output_section->map_head.link_order = NULL;
+ output_section->map_tail.link_order = NULL;
+ }
/* Stop future calls to lang_add_section from messing with map_head
and map_tail link_order fields. */
- stripped_excluded_sections = TRUE;
+ map_head_is_link_order = TRUE;
}
static void
{
lang_input_section_type *is = &((*this_ptr)->input_section);
asection *i = is->section;
+ asection *o = output_section_statement->bfd_section;
- if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS
- && (i->flags & SEC_EXCLUDE) == 0)
+ if (i->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ i->output_offset = i->vma - o->vma;
+ else if ((i->flags & SEC_EXCLUDE) != 0)
+ i->output_offset = dot - o->vma;
+ else
{
bfd_size_type alignment_needed;
- asection *o;
/* Align this section first to the input sections requirement,
then to the output section's requirement. If this alignment
if (output_section_statement->subsection_alignment != -1)
i->alignment_power = output_section_statement->subsection_alignment;
- o = output_section_statement->bfd_section;
if (o->alignment_power < i->alignment_power)
o->alignment_power = i->alignment_power;
}
/* Remember where in the output section this input section goes. */
-
i->output_offset = dot - o->vma;
/* Mark how big the output section must be to contain this now. */
dot += TO_ADDR (i->size);
o->size = TO_SIZE (dot - o->vma);
}
- else
- {
- i->output_offset = i->vma - output_section_statement->bfd_section->vma;
- }
return dot;
}
{
case lang_output_section_statement_enum:
{
- bfd_vma newdot, after;
+ bfd_vma newdot, after, dotdelta;
lang_output_section_statement_type *os;
lang_memory_region_type *r;
int section_alignment = 0;
}
newdot = dot;
+ dotdelta = 0;
if (bfd_is_abs_section (os->bfd_section))
{
/* No matter what happens, an abs section starts at zero. */
bfd_vma savedot = newdot;
newdot = align_power (newdot, section_alignment);
- if (newdot != savedot
+ dotdelta = newdot - savedot;
+ if (dotdelta != 0
&& (config.warn_section_align
|| os->addr_tree != NULL)
&& expld.phase != lang_mark_phase_enum)
einfo (_("%P: warning: changing start of section"
" %s by %lu bytes\n"),
- os->name, (unsigned long) (newdot - savedot));
+ os->name, (unsigned long) dotdelta);
}
bfd_set_section_vma (0, os->bfd_section, newdot);
{
bfd_vma lma = os->lma_region->current;
- /* When LMA_REGION is the same as REGION, align the LMA
- as we did for the VMA, possibly including alignment
- from the bfd section. If a different region, then
- only align according to the value in the output
- statement unless specified otherwise. */
- if (os->lma_region != os->region && !os->align_lma_with_input)
- section_alignment = os->section_alignment;
- if (section_alignment > 0)
- lma = align_power (lma, section_alignment);
+ if (os->align_lma_with_input)
+ lma += dotdelta;
+ else
+ {
+ /* When LMA_REGION is the same as REGION, align the LMA
+ as we did for the VMA, possibly including alignment
+ from the bfd section. If a different region, then
+ only align according to the value in the output
+ statement. */
+ if (os->lma_region != os->region)
+ section_alignment = os->section_alignment;
+ if (section_alignment > 0)
+ lma = align_power (lma, section_alignment);
+ }
os->bfd_section->lma = lma;
}
else if (r->last_os != NULL
if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0
|| (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0
|| link_info.relocatable)
- dot += TO_ADDR (os->bfd_section->size);
+ dotdelta = TO_ADDR (os->bfd_section->size);
+ else
+ dotdelta = 0;
+ dot += dotdelta;
if (os->update_dot_tree != 0)
exp_fold_tree (os->update_dot_tree, bfd_abs_section_ptr, &dot);
os->bfd_section->vma);
if (os->lma_region != NULL && os->lma_region != os->region
- && (os->bfd_section->flags & SEC_LOAD))
+ && ((os->bfd_section->flags & SEC_LOAD)
+ || os->align_lma_with_input))
{
- os->lma_region->current
- = os->bfd_section->lma + TO_ADDR (os->bfd_section->size);
+ os->lma_region->current = os->bfd_section->lma + dotdelta;
if (check_regions)
os_region_check (os, os->lma_region, NULL,
*relax = TRUE;
}
dot = size_input_section (prev, output_section_statement,
- output_section_statement->fill, dot);
+ fill, dot);
}
break;
for (power = 0; power <= 4; power++)
bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
- power = UINT_MAX;
+ power = (unsigned int) -1;
bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
}
}
/* The BFD linker needs to have a list of all input BFDs involved in
a link. */
- ASSERT (entry->the_bfd->link_next == NULL);
+ ASSERT (entry->the_bfd->link.next == NULL);
ASSERT (entry->the_bfd != link_info.output_bfd);
*link_info.input_bfds_tail = entry->the_bfd;
- link_info.input_bfds_tail = &entry->the_bfd->link_next;
+ link_info.input_bfds_tail = &entry->the_bfd->link.next;
entry->the_bfd->usrdata = entry;
bfd_set_gp_size (entry->the_bfd, g_switch_value);
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