/* ELF linking support for BFD.
- Copyright 1995-2013 Free Software Foundation, Inc.
+ Copyright (C) 1995-2015 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "sysdep.h"
#include "bfd.h"
+#include "bfd_stdint.h"
#include "bfdlink.h"
#include "libbfd.h"
#define ARCH_SIZE 0
h = (struct elf_link_hash_entry *) bh;
h->def_regular = 1;
h->non_elf = 0;
+ h->root.linker_def = 1;
h->type = STT_OBJECT;
if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL)
h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN;
asection *p)
{
struct elf_link_hash_table *htab;
+ asection *ip;
switch (elf_section_data (p)->this_hdr.sh_type)
{
if (htab->text_index_section != NULL)
return p != htab->text_index_section && p != htab->data_index_section;
- if (strcmp (p->name, ".got") == 0
- || strcmp (p->name, ".got.plt") == 0
- || strcmp (p->name, ".plt") == 0)
- {
- asection *ip;
-
- if (htab->dynobj != NULL
+ return (htab->dynobj != NULL
&& (ip = bfd_get_linker_section (htab->dynobj, p->name)) != NULL
- && ip->output_section == p)
- return TRUE;
- }
- return FALSE;
+ && ip->output_section == p);
/* There shouldn't be section relative relocations
against any other section. */
static void
elf_merge_st_other (bfd *abfd, struct elf_link_hash_entry *h,
- Elf_Internal_Sym *isym, bfd_boolean definition,
- bfd_boolean dynamic)
+ const Elf_Internal_Sym *isym,
+ bfd_boolean definition, bfd_boolean dynamic)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
/* If st_other has a processor-specific meaning, specific
- code might be needed here. We never merge the visibility
- attribute with the one from a dynamic object. */
+ code might be needed here. */
if (bed->elf_backend_merge_symbol_attribute)
(*bed->elf_backend_merge_symbol_attribute) (h, isym, definition,
dynamic);
- /* If this symbol has default visibility and the user has requested
- we not re-export it, then mark it as hidden. */
- if (definition
- && !dynamic
- && (abfd->no_export
- || (abfd->my_archive && abfd->my_archive->no_export))
- && ELF_ST_VISIBILITY (isym->st_other) != STV_INTERNAL)
- isym->st_other = (STV_HIDDEN
- | (isym->st_other & ~ELF_ST_VISIBILITY (-1)));
-
- if (!dynamic && ELF_ST_VISIBILITY (isym->st_other) != 0)
- {
- unsigned char hvis, symvis, other, nvis;
-
- /* Only merge the visibility. Leave the remainder of the
- st_other field to elf_backend_merge_symbol_attribute. */
- other = h->other & ~ELF_ST_VISIBILITY (-1);
-
- /* Combine visibilities, using the most constraining one. */
- hvis = ELF_ST_VISIBILITY (h->other);
- symvis = ELF_ST_VISIBILITY (isym->st_other);
- if (! hvis)
- nvis = symvis;
- else if (! symvis)
- nvis = hvis;
- else
- nvis = hvis < symvis ? hvis : symvis;
+ if (!dynamic)
+ {
+ unsigned symvis = ELF_ST_VISIBILITY (isym->st_other);
+ unsigned hvis = ELF_ST_VISIBILITY (h->other);
- h->other = other | nvis;
+ /* Keep the most constraining visibility. Leave the remainder
+ of the st_other field to elf_backend_merge_symbol_attribute. */
+ if (symvis - 1 < hvis - 1)
+ h->other = symvis | (h->other & ~ELF_ST_VISIBILITY (-1));
}
+ else if (definition && ELF_ST_VISIBILITY (isym->st_other) != STV_DEFAULT)
+ h->protected_def = 1;
}
/* This function is called when we want to merge a new symbol with an
return TRUE;
}
- /* Plugin symbol type isn't currently set. Stop bogus errors. */
- if (oldbfd != NULL && (oldbfd->flags & BFD_PLUGIN) != 0)
- *type_change_ok = TRUE;
-
- /* Check TLS symbol. We don't check undefined symbol introduced by
- "ld -u". */
- else if (oldbfd != NULL
- && ELF_ST_TYPE (sym->st_info) != h->type
- && (ELF_ST_TYPE (sym->st_info) == STT_TLS || h->type == STT_TLS))
+ /* Check TLS symbols. We don't check undefined symbols introduced
+ by "ld -u" which have no type (and oldbfd NULL), and we don't
+ check symbols from plugins because they also have no type. */
+ if (oldbfd != NULL
+ && (oldbfd->flags & BFD_PLUGIN) == 0
+ && (abfd->flags & BFD_PLUGIN) == 0
+ && ELF_ST_TYPE (sym->st_info) != h->type
+ && (ELF_ST_TYPE (sym->st_info) == STT_TLS || h->type == STT_TLS))
{
bfd *ntbfd, *tbfd;
bfd_boolean ntdef, tdef;
size_change_ok = FALSE;
tmp_sec = sec;
if (!_bfd_elf_merge_symbol (abfd, info, shortname, sym, &tmp_sec, &value,
- &hi, NULL, NULL, NULL, &skip, &override,
+ &hi, poldbfd, NULL, NULL, &skip, &override,
&type_change_ok, &size_change_ok))
return FALSE;
if (!h->def_dynamic
|| h->def_regular
|| h->dynindx == -1
- || h->verinfo.verdef == NULL)
+ || h->verinfo.verdef == NULL
+ || (elf_dyn_lib_class (h->verinfo.verdef->vd_bfd)
+ & (DYN_AS_NEEDED | DYN_DT_NEEDED | DYN_NO_NEEDED)))
return TRUE;
/* See if we already know about this version. */
{
struct elf_link_hash_entry **p;
- p = (struct elf_link_hash_entry **)
- bfd_zmalloc (reldata->count * sizeof (struct elf_link_hash_entry *));
+ p = ((struct elf_link_hash_entry **)
+ bfd_zmalloc (reldata->count * sizeof (*p)));
if (p == NULL)
return FALSE;
DYNBSS. */
bfd_boolean
-_bfd_elf_adjust_dynamic_copy (struct elf_link_hash_entry *h,
+_bfd_elf_adjust_dynamic_copy (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
asection *dynbss)
{
unsigned int power_of_two;
/* Increment the size of DYNBSS to make room for the symbol. */
dynbss->size += h->size;
+ if (h->protected_def)
+ {
+ info->callbacks->einfo
+ (_("%P: copy reloc against protected `%T' is invalid\n"),
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
return TRUE;
}
if (! bfd_check_format (abfd, bfd_object))
return FALSE;
- /* If we have already included the element containing this symbol in the
- link then we do not need to include it again. Just claim that any symbol
- it contains is not a definition, so that our caller will not decide to
- (re)include this element. */
- if (abfd->archive_pass)
- return FALSE;
-
/* Select the appropriate symbol table. */
if ((abfd->flags & DYNAMIC) == 0 || elf_dynsymtab (abfd) == 0)
hdr = &elf_tdata (abfd)->symtab_hdr;
on_needed_list (const char *soname, struct bfd_link_needed_list *needed)
{
for (; needed != NULL; needed = needed->next)
- if (strcmp (soname, needed->name) == 0)
+ if ((elf_dyn_lib_class (needed->by) & DYN_AS_NEEDED) == 0
+ && strcmp (soname, needed->name) == 0)
return TRUE;
return FALSE;
struct bfd_link_info *info,
enum notice_asneeded_action act)
{
- return (*info->callbacks->notice) (info, NULL, ibfd, NULL, act, 0, NULL);
+ return (*info->callbacks->notice) (info, NULL, NULL, ibfd, NULL, act, 0);
}
/* Add symbols from an ELF object file to the linker hash table. */
bfd_size_type old_dynstr_size = 0;
size_t tabsize = 0;
asection *s;
+ bfd_boolean just_syms;
htab = elf_hash_table (info);
bed = get_elf_backend_data (abfd);
}
}
+ just_syms = ((s = abfd->sections) != NULL
+ && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS);
+
add_needed = TRUE;
if (! dynamic)
{
/* If we are creating a shared library, create all the dynamic
sections immediately. We need to attach them to something,
so we attach them to this BFD, provided it is the right
- format. FIXME: If there are no input BFD's of the same
- format as the output, we can't make a shared library. */
- if (info->shared
+ format and is not from ld --just-symbols. FIXME: If there
+ are no input BFD's of the same format as the output, we can't
+ make a shared library. */
+ if (!just_syms
+ && info->shared
&& is_elf_hash_table (htab)
&& info->output_bfd->xvec == abfd->xvec
&& !htab->dynamic_sections_created)
/* ld --just-symbols and dynamic objects don't mix very well.
ld shouldn't allow it. */
- if ((s = abfd->sections) != NULL
- && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ if (just_syms)
abort ();
/* If this dynamic lib was specified on the command line with
name = newname;
}
+ /* If this symbol has default visibility and the user has
+ requested we not re-export it, then mark it as hidden. */
+ if (definition
+ && !dynamic
+ && abfd->no_export
+ && ELF_ST_VISIBILITY (isym->st_other) != STV_INTERNAL)
+ isym->st_other = (STV_HIDDEN
+ | (isym->st_other & ~ELF_ST_VISIBILITY (-1)));
+
if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec, &value,
sym_hash, &old_bfd, &old_weak,
&old_alignment, &skip, &override,
{
amt = ((isymend - isym + 1)
* sizeof (struct elf_link_hash_entry *));
- nondeflt_vers =
- (struct elf_link_hash_entry **) bfd_malloc (amt);
+ nondeflt_vers
+ = (struct elf_link_hash_entry **) bfd_malloc (amt);
if (!nondeflt_vers)
goto error_free_vers;
}
int ret;
const char *soname = elf_dt_name (abfd);
+ info->callbacks->minfo ("%!", soname, old_bfd,
+ h->root.root.string);
+
/* A symbol from a library loaded via DT_NEEDED of some
other library is referenced by a regular object.
Add a DT_NEEDED entry for it. Issue an error if
}
elf_dyn_lib_class (abfd) = (enum dynamic_lib_link_class)
- (elf_dyn_lib_class (abfd) & ~DYN_AS_NEEDED);
+ (elf_dyn_lib_class (abfd) & ~DYN_AS_NEEDED);
add_needed = TRUE;
ret = elf_add_dt_needed_tag (abfd, info, soname, add_needed);
/* Add this bfd to the loaded list. */
struct elf_link_loaded_list *n;
- n = (struct elf_link_loaded_list *)
- bfd_alloc (abfd, sizeof (struct elf_link_loaded_list));
+ n = (struct elf_link_loaded_list *) bfd_alloc (abfd, sizeof (*n));
if (n == NULL)
goto error_return;
n->abfd = abfd;
}
/* Add symbols from an ELF archive file to the linker hash table. We
- don't use _bfd_generic_link_add_archive_symbols because of a
- problem which arises on UnixWare. The UnixWare libc.so is an
- archive which includes an entry libc.so.1 which defines a bunch of
- symbols. The libc.so archive also includes a number of other
- object files, which also define symbols, some of which are the same
- as those defined in libc.so.1. Correct linking requires that we
- consider each object file in turn, and include it if it defines any
- symbols we need. _bfd_generic_link_add_archive_symbols does not do
- this; it looks through the list of undefined symbols, and includes
- any object file which defines them. When this algorithm is used on
- UnixWare, it winds up pulling in libc.so.1 early and defining a
- bunch of symbols. This means that some of the other objects in the
- archive are not included in the link, which is incorrect since they
- precede libc.so.1 in the archive.
+ don't use _bfd_generic_link_add_archive_symbols because we need to
+ handle versioned symbols.
Fortunately, ELF archive handling is simpler than that done by
_bfd_generic_link_add_archive_symbols, which has to allow for a.out
elf_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info)
{
symindex c;
- bfd_boolean *defined = NULL;
- bfd_boolean *included = NULL;
+ unsigned char *included = NULL;
carsym *symdefs;
bfd_boolean loop;
bfd_size_type amt;
if (c == 0)
return TRUE;
amt = c;
- amt *= sizeof (bfd_boolean);
- defined = (bfd_boolean *) bfd_zmalloc (amt);
- included = (bfd_boolean *) bfd_zmalloc (amt);
- if (defined == NULL || included == NULL)
- goto error_return;
+ amt *= sizeof (*included);
+ included = (unsigned char *) bfd_zmalloc (amt);
+ if (included == NULL)
+ return FALSE;
symdefs = bfd_ardata (abfd)->symdefs;
bed = get_elf_backend_data (abfd);
struct bfd_link_hash_entry *undefs_tail;
symindex mark;
- if (defined[i] || included[i])
+ if (included[i])
continue;
if (symdef->file_offset == last)
{
else if (h->root.type != bfd_link_hash_undefined)
{
if (h->root.type != bfd_link_hash_undefweak)
- defined[i] = TRUE;
+ /* Symbol must be defined. Don't check it again. */
+ included[i] = TRUE;
continue;
}
if (! bfd_check_format (element, bfd_object))
goto error_return;
- /* Doublecheck that we have not included this object
- already--it should be impossible, but there may be
- something wrong with the archive. */
- if (element->archive_pass != 0)
- {
- bfd_set_error (bfd_error_bad_value);
- goto error_return;
- }
- element->archive_pass = 1;
-
undefs_tail = info->hash->undefs_tail;
if (!(*info->callbacks
}
while (loop);
- free (defined);
free (included);
return TRUE;
error_return:
- if (defined != NULL)
- free (defined);
if (included != NULL)
free (included);
return FALSE;
{
best_chlen = max;
best_size = i;
- no_improvement_count = 0;
+ no_improvement_count = 0;
}
/* PR 11843: Avoid futile long searches for the best bucket size
when there are a large number of symbols. */
{
bfd *ibfd;
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour
&& !_bfd_elf_fixup_group_sections (ibfd, bfd_abs_section_ptr))
return FALSE;
for (inputobj = info->input_bfds;
inputobj;
- inputobj = inputobj->link_next)
+ inputobj = inputobj->link.next)
{
asection *s;
asection *o;
for (sub = info->input_bfds; sub != NULL;
- sub = sub->link_next)
+ sub = sub->link.next)
if (bfd_get_flavour (sub) == bfd_target_elf_flavour)
for (o = sub->sections; o != NULL; o = o->next)
if (elf_section_data (o)->this_hdr.sh_type
if (!is_elf_hash_table (info->hash))
return FALSE;
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
if ((ibfd->flags & DYNAMIC) == 0)
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
if ((sec->flags & SEC_MERGE) != 0
if (entry == NULL)
{
entry = (struct bfd_hash_entry *)
- bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
+ bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
if (entry == NULL)
return entry;
}
free (ret);
return NULL;
}
+ ret->root.hash_table_free = _bfd_elf_link_hash_table_free;
return &ret->root;
}
/* Destroy an ELF linker hash table. */
void
-_bfd_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
+_bfd_elf_link_hash_table_free (bfd *obfd)
{
- struct elf_link_hash_table *htab = (struct elf_link_hash_table *) hash;
+ struct elf_link_hash_table *htab;
+
+ htab = (struct elf_link_hash_table *) obfd->link.hash;
if (htab->dynstr != NULL)
_bfd_elf_strtab_free (htab->dynstr);
_bfd_merge_sections_free (htab->merge_info);
- _bfd_generic_link_hash_table_free (hash);
+ _bfd_generic_link_hash_table_free (obfd);
}
/* This is a hook for the ELF emulation code in the generic linker to
if (count1 == 0 || count2 == 0 || count1 != count2)
goto done;
- symtable1 = (struct elf_symbol *)
- bfd_malloc (count1 * sizeof (struct elf_symbol));
- symtable2 = (struct elf_symbol *)
- bfd_malloc (count2 * sizeof (struct elf_symbol));
+ symtable1
+ = (struct elf_symbol *) bfd_malloc (count1 * sizeof (*symtable1));
+ symtable2
+ = (struct elf_symbol *) bfd_malloc (count2 * sizeof (*symtable2));
if (symtable1 == NULL || symtable2 == NULL)
goto done;
{
bfd_boolean failed;
bfd_boolean localsyms;
- bfd_boolean need_second_pass;
- bfd_boolean second_pass;
bfd_boolean file_sym_done;
struct elf_final_link_info *flinfo;
};
return r;
}
+/* qsort comparison functions sorting external relocs by r_offset. */
+
+static int
+cmp_ext32l_r_offset (const void *p, const void *q)
+{
+ union aligned32
+ {
+ uint32_t v;
+ unsigned char c[4];
+ };
+ const union aligned32 *a
+ = (const union aligned32 *) ((const Elf32_External_Rel *) p)->r_offset;
+ const union aligned32 *b
+ = (const union aligned32 *) ((const Elf32_External_Rel *) q)->r_offset;
+
+ uint32_t aval = ( (uint32_t) a->c[0]
+ | (uint32_t) a->c[1] << 8
+ | (uint32_t) a->c[2] << 16
+ | (uint32_t) a->c[3] << 24);
+ uint32_t bval = ( (uint32_t) b->c[0]
+ | (uint32_t) b->c[1] << 8
+ | (uint32_t) b->c[2] << 16
+ | (uint32_t) b->c[3] << 24);
+ if (aval < bval)
+ return -1;
+ else if (aval > bval)
+ return 1;
+ return 0;
+}
+
+static int
+cmp_ext32b_r_offset (const void *p, const void *q)
+{
+ union aligned32
+ {
+ uint32_t v;
+ unsigned char c[4];
+ };
+ const union aligned32 *a
+ = (const union aligned32 *) ((const Elf32_External_Rel *) p)->r_offset;
+ const union aligned32 *b
+ = (const union aligned32 *) ((const Elf32_External_Rel *) q)->r_offset;
+
+ uint32_t aval = ( (uint32_t) a->c[0] << 24
+ | (uint32_t) a->c[1] << 16
+ | (uint32_t) a->c[2] << 8
+ | (uint32_t) a->c[3]);
+ uint32_t bval = ( (uint32_t) b->c[0] << 24
+ | (uint32_t) b->c[1] << 16
+ | (uint32_t) b->c[2] << 8
+ | (uint32_t) b->c[3]);
+ if (aval < bval)
+ return -1;
+ else if (aval > bval)
+ return 1;
+ return 0;
+}
+
+#ifdef BFD_HOST_64_BIT
+static int
+cmp_ext64l_r_offset (const void *p, const void *q)
+{
+ union aligned64
+ {
+ uint64_t v;
+ unsigned char c[8];
+ };
+ const union aligned64 *a
+ = (const union aligned64 *) ((const Elf64_External_Rel *) p)->r_offset;
+ const union aligned64 *b
+ = (const union aligned64 *) ((const Elf64_External_Rel *) q)->r_offset;
+
+ uint64_t aval = ( (uint64_t) a->c[0]
+ | (uint64_t) a->c[1] << 8
+ | (uint64_t) a->c[2] << 16
+ | (uint64_t) a->c[3] << 24
+ | (uint64_t) a->c[4] << 32
+ | (uint64_t) a->c[5] << 40
+ | (uint64_t) a->c[6] << 48
+ | (uint64_t) a->c[7] << 56);
+ uint64_t bval = ( (uint64_t) b->c[0]
+ | (uint64_t) b->c[1] << 8
+ | (uint64_t) b->c[2] << 16
+ | (uint64_t) b->c[3] << 24
+ | (uint64_t) b->c[4] << 32
+ | (uint64_t) b->c[5] << 40
+ | (uint64_t) b->c[6] << 48
+ | (uint64_t) b->c[7] << 56);
+ if (aval < bval)
+ return -1;
+ else if (aval > bval)
+ return 1;
+ return 0;
+}
+
+static int
+cmp_ext64b_r_offset (const void *p, const void *q)
+{
+ union aligned64
+ {
+ uint64_t v;
+ unsigned char c[8];
+ };
+ const union aligned64 *a
+ = (const union aligned64 *) ((const Elf64_External_Rel *) p)->r_offset;
+ const union aligned64 *b
+ = (const union aligned64 *) ((const Elf64_External_Rel *) q)->r_offset;
+
+ uint64_t aval = ( (uint64_t) a->c[0] << 56
+ | (uint64_t) a->c[1] << 48
+ | (uint64_t) a->c[2] << 40
+ | (uint64_t) a->c[3] << 32
+ | (uint64_t) a->c[4] << 24
+ | (uint64_t) a->c[5] << 16
+ | (uint64_t) a->c[6] << 8
+ | (uint64_t) a->c[7]);
+ uint64_t bval = ( (uint64_t) b->c[0] << 56
+ | (uint64_t) b->c[1] << 48
+ | (uint64_t) b->c[2] << 40
+ | (uint64_t) b->c[3] << 32
+ | (uint64_t) b->c[4] << 24
+ | (uint64_t) b->c[5] << 16
+ | (uint64_t) b->c[6] << 8
+ | (uint64_t) b->c[7]);
+ if (aval < bval)
+ return -1;
+ else if (aval > bval)
+ return 1;
+ return 0;
+}
+#endif
+
/* When performing a relocatable link, the input relocations are
preserved. But, if they reference global symbols, the indices
referenced must be updated. Update all the relocations found in
static void
elf_link_adjust_relocs (bfd *abfd,
- struct bfd_elf_section_reloc_data *reldata)
+ struct bfd_elf_section_reloc_data *reldata,
+ bfd_boolean sort)
{
unsigned int i;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
| (irela[j].r_info & r_type_mask));
(*swap_out) (abfd, irela, erela);
}
+
+ if (sort)
+ {
+ int (*compare) (const void *, const void *);
+
+ if (bed->s->arch_size == 32)
+ {
+ if (abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)
+ compare = cmp_ext32l_r_offset;
+ else if (abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
+ compare = cmp_ext32b_r_offset;
+ else
+ abort ();
+ }
+ else
+ {
+#ifdef BFD_HOST_64_BIT
+ if (abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)
+ compare = cmp_ext64l_r_offset;
+ else if (abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
+ compare = cmp_ext64b_r_offset;
+ else
+#endif
+ abort ();
+ }
+ qsort (reldata->hdr->contents, count, reldata->hdr->sh_entsize, compare);
+ free (reldata->hashes);
+ reldata->hashes = NULL;
+ }
}
struct elf_link_sort_rela
struct elf_link_hash_entry *);
const struct elf_backend_data *bed;
+ BFD_ASSERT (elf_onesymtab (flinfo->output_bfd));
+
bed = get_elf_backend_data (flinfo->output_bfd);
output_symbol_hook = bed->elf_backend_link_output_symbol_hook;
if (output_symbol_hook != NULL)
amt = flinfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx);
destshndx = (Elf_External_Sym_Shndx *) bfd_realloc (destshndx,
- amt * 2);
+ amt * 2);
if (destshndx == NULL)
return 0;
flinfo->symshndxbuf = destshndx;
{
if (!h->forced_local)
return TRUE;
- if (eoinfo->second_pass
- && !((h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && h->root.u.def.section->output_section != NULL))
- return TRUE;
-
- if (!eoinfo->file_sym_done
- && (eoinfo->second_pass ? eoinfo->flinfo->filesym_count == 1
- : eoinfo->flinfo->filesym_count > 1))
- {
- /* Output a FILE symbol so that following locals are not associated
- with the wrong input file. */
- memset (&sym, 0, sizeof (sym));
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
- sym.st_shndx = SHN_ABS;
- if (!elf_link_output_sym (eoinfo->flinfo, NULL, &sym,
- bfd_und_section_ptr, NULL))
- return FALSE;
-
- eoinfo->file_sym_done = TRUE;
- }
}
else
{
a regular file, or that we have been told to strip. However, if
h->indx is set to -2, the symbol is used by a reloc and we must
output it. */
+ strip = FALSE;
if (h->indx == -2)
- strip = FALSE;
+ ;
else if ((h->def_dynamic
|| h->ref_dynamic
|| h->root.type == bfd_link_hash_new)
|| h->root.type == bfd_link_hash_defweak)
&& ((flinfo->info->strip_discarded
&& discarded_section (h->root.u.def.section))
- || (h->root.u.def.section->owner != NULL
+ || ((h->root.u.def.section->flags & SEC_LINKER_CREATED) == 0
+ && h->root.u.def.section->owner != NULL
&& (h->root.u.def.section->owner->flags & BFD_PLUGIN) != 0)))
strip = TRUE;
else if ((h->root.type == bfd_link_hash_undefined
&& h->root.u.undef.abfd != NULL
&& (h->root.u.undef.abfd->flags & BFD_PLUGIN) != 0)
strip = TRUE;
- else
- strip = FALSE;
/* If we're stripping it, and it's not a dynamic symbol, there's
- nothing else to do unless it is a forced local symbol or a
- STT_GNU_IFUNC symbol. */
+ nothing else to do. However, if it is a forced local symbol or
+ an ifunc symbol we need to give the backend finish_dynamic_symbol
+ function a chance to make it dynamic. */
if (strip
&& h->dynindx == -1
&& h->type != STT_GNU_IFUNC
input_sec = h->root.u.def.section;
if (input_sec->output_section != NULL)
{
- if (eoinfo->localsyms && flinfo->filesym_count == 1)
- {
- bfd_boolean second_pass_sym
- = (input_sec->owner == flinfo->output_bfd
- || input_sec->owner == NULL
- || (input_sec->flags & SEC_LINKER_CREATED) != 0
- || (input_sec->owner->flags & BFD_LINKER_CREATED) != 0);
-
- eoinfo->need_second_pass |= second_pass_sym;
- if (eoinfo->second_pass != second_pass_sym)
- return TRUE;
- }
-
sym.st_shndx =
_bfd_elf_section_from_bfd_section (flinfo->output_bfd,
input_sec->output_section);
asection *tls_sec = elf_hash_table (flinfo->info)->tls_sec;
if (tls_sec != NULL)
sym.st_value -= tls_sec->vma;
- else
- {
- /* The TLS section may have been garbage collected. */
- BFD_ASSERT (flinfo->info->gc_sections
- && !input_sec->gc_mark);
- }
}
}
}
if (!h->def_regular)
{
- if (h->verinfo.verdef == NULL)
+ if (h->verinfo.verdef == NULL
+ || (elf_dyn_lib_class (h->verinfo.verdef->vd_bfd)
+ & (DYN_AS_NEEDED | DYN_DT_NEEDED | DYN_NO_NEEDED)))
iversym.vs_vers = 0;
else
iversym.vs_vers = h->verinfo.verdef->vd_exp_refno + 1;
}
}
- /* If we're stripping it, then it was just a dynamic symbol, and
- there's nothing else to do. */
- if (strip || (input_sec->flags & SEC_EXCLUDE) != 0)
+ /* If the symbol is undefined, and we didn't output it to .dynsym,
+ strip it from .symtab too. Obviously we can't do this for
+ relocatable output or when needed for --emit-relocs. */
+ else if (input_sec == bfd_und_section_ptr
+ && h->indx != -2
+ && !flinfo->info->relocatable)
+ return TRUE;
+ /* Also strip others that we couldn't earlier due to dynamic symbol
+ processing. */
+ if (strip)
return TRUE;
+ if ((input_sec->flags & SEC_EXCLUDE) != 0)
+ return TRUE;
+
+ /* Output a FILE symbol so that following locals are not associated
+ with the wrong input file. We need one for forced local symbols
+ if we've seen more than one FILE symbol or when we have exactly
+ one FILE symbol but global symbols are present in a file other
+ than the one with the FILE symbol. We also need one if linker
+ defined symbols are present. In practice these conditions are
+ always met, so just emit the FILE symbol unconditionally. */
+ if (eoinfo->localsyms
+ && !eoinfo->file_sym_done
+ && eoinfo->flinfo->filesym_count != 0)
+ {
+ Elf_Internal_Sym fsym;
+
+ memset (&fsym, 0, sizeof (fsym));
+ fsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ fsym.st_shndx = SHN_ABS;
+ if (!elf_link_output_sym (eoinfo->flinfo, NULL, &fsym,
+ bfd_und_section_ptr, NULL))
+ return FALSE;
+
+ eoinfo->file_sym_done = TRUE;
+ }
indx = bfd_get_symcount (flinfo->output_bfd);
ret = elf_link_output_sym (flinfo, h->root.root.string, &sym, input_sec, h);
*ppsection = isec;
- /* Don't output the first, undefined, symbol. */
- if (ppsection == flinfo->sections)
+ /* Don't output the first, undefined, symbol. In fact, don't
+ output any undefined local symbol. */
+ if (isec == bfd_und_section_ptr)
continue;
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
if (ELF_ST_TYPE (isym->st_info) == STT_FILE)
{
+ if (input_bfd->lto_output)
+ /* -flto puts a temp file name here. This means builds
+ are not reproducible. Discard the symbol. */
+ continue;
have_file_sym = TRUE;
flinfo->filesym_count += 1;
}
memset (&osym, 0, sizeof (osym));
osym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
osym.st_shndx = SHN_ABS;
- if (!elf_link_output_sym (flinfo, input_bfd->filename, &osym,
- bfd_abs_section_ptr, NULL))
+ if (!elf_link_output_sym (flinfo,
+ (input_bfd->lto_output ? NULL
+ : input_bfd->filename),
+ &osym, bfd_abs_section_ptr, NULL))
return FALSE;
}
file, so the contents field will not have been set by any of
the routines which work on output files. */
if (elf_section_data (o)->this_hdr.contents != NULL)
- contents = elf_section_data (o)->this_hdr.contents;
+ {
+ contents = elf_section_data (o)->this_hdr.contents;
+ if (bed->caches_rawsize
+ && o->rawsize != 0
+ && o->rawsize < o->size)
+ {
+ memcpy (flinfo->contents, contents, o->rawsize);
+ contents = flinfo->contents;
+ }
+ }
else
{
contents = flinfo->contents;
s_type = h->type;
+ /* If a plugin symbol is referenced from a non-IR file,
+ mark the symbol as undefined. Note that the
+ linker may attach linker created dynamic sections
+ to the plugin bfd. Symbols defined in linker
+ created sections are not plugin symbols. */
+ if (h->root.non_ir_ref
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags
+ & SEC_LINKER_CREATED) == 0
+ && h->root.u.def.section->owner != NULL
+ && (h->root.u.def.section->owner->flags
+ & BFD_PLUGIN) != 0)
+ {
+ h->root.type = bfd_link_hash_undefined;
+ h->root.u.undef.abfd = h->root.u.def.section->owner;
+ }
+
ps = NULL;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
size = (bfd_size_type) bfd_get_reloc_size (howto);
buf = (bfd_byte *) bfd_zmalloc (size);
- if (buf == NULL)
+ if (buf == NULL && size != 0)
return FALSE;
rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
switch (rstat)
bfd_size_type max_internal_reloc_count;
bfd_size_type max_sym_count;
bfd_size_type max_sym_shndx_count;
- file_ptr off;
Elf_Internal_Sym elfsym;
unsigned int i;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *symtab_shndx_hdr;
- Elf_Internal_Shdr *symstrtab_hdr;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
struct elf_outext_info eoinfo;
bfd_boolean merged;
/* Figure out the file positions for everything but the symbol table
and the relocs. We set symcount to force assign_section_numbers
to create a symbol table. */
- bfd_get_symcount (abfd) = info->strip == strip_all ? 0 : 1;
+ bfd_get_symcount (abfd) = info->strip != strip_all || emit_relocs;
BFD_ASSERT (! abfd->output_has_begun);
if (! _bfd_elf_compute_section_file_positions (abfd, info))
goto error_return;
esdo->rela.count = 0;
}
- _bfd_elf_assign_file_positions_for_relocs (abfd);
-
/* We have now assigned file positions for all the sections except
- .symtab and .strtab. We start the .symtab section at the current
- file position, and write directly to it. We build the .strtab
- section in memory. */
+ .symtab, .strtab, and non-loaded reloc sections. We start the
+ .symtab section at the current file position, and write directly
+ to it. We build the .strtab section in memory. */
bfd_get_symcount (abfd) = 0;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* sh_name is set in prep_headers. */
/* sh_offset is set just below. */
symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
- off = elf_next_file_pos (abfd);
- off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE);
-
- /* Note that at this point elf_next_file_pos (abfd) is
- incorrect. We do not yet know the size of the .symtab section.
- We correct next_file_pos below, after we do know the size. */
-
/* Allocate a buffer to hold swapped out symbols. This is to avoid
continuously seeking to the right position in the file. */
if (! info->keep_memory || max_sym_count < 20)
goto error_return;
}
- /* Start writing out the symbol table. The first symbol is always a
- dummy symbol. */
- if (info->strip != strip_all
- || emit_relocs)
+ if (info->strip != strip_all || emit_relocs)
{
+ file_ptr off = elf_next_file_pos (abfd);
+
+ _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE);
+
+ /* Note that at this point elf_next_file_pos (abfd) is
+ incorrect. We do not yet know the size of the .symtab section.
+ We correct next_file_pos below, after we do know the size. */
+
+ /* Start writing out the symbol table. The first symbol is always a
+ dummy symbol. */
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = 0;
if (elf_link_output_sym (&flinfo, NULL, &elfsym, bfd_und_section_ptr,
NULL) != 1)
goto error_return;
- }
- /* Output a symbol for each section. We output these even if we are
- discarding local symbols, since they are used for relocs. These
- symbols have no names. We store the index of each one in the
- index field of the section, so that we can find it again when
- outputting relocs. */
- if (info->strip != strip_all
- || emit_relocs)
- {
+ /* Output a symbol for each section. We output these even if we are
+ discarding local symbols, since they are used for relocs. These
+ symbols have no names. We store the index of each one in the
+ index field of the section, so that we can find it again when
+ outputting relocs. */
+
elfsym.st_size = 0;
elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
elfsym.st_other = 0;
we could write the relocs out and then read them again; I don't
know how bad the memory loss will be. */
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
sub->output_has_begun = FALSE;
for (o = abfd->sections; o != NULL; o = o->next)
{
/* Free symbol buffer if needed. */
if (!info->reduce_memory_overheads)
{
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
if (bfd_get_flavour (sub) == bfd_target_elf_flavour
&& elf_tdata (sub)->symbuf)
{
eoinfo.failed = FALSE;
eoinfo.flinfo = &flinfo;
eoinfo.localsyms = TRUE;
- eoinfo.need_second_pass = FALSE;
- eoinfo.second_pass = FALSE;
eoinfo.file_sym_done = FALSE;
bfd_hash_traverse (&info->hash->table, elf_link_output_extsym, &eoinfo);
if (eoinfo.failed)
return FALSE;
- if (eoinfo.need_second_pass)
- {
- eoinfo.second_pass = TRUE;
- bfd_hash_traverse (&info->hash->table, elf_link_output_extsym, &eoinfo);
- if (eoinfo.failed)
- return FALSE;
- }
-
/* If backend needs to output some local symbols not present in the hash
table, do it now. */
- if (bed->elf_backend_output_arch_local_syms)
+ if (bed->elf_backend_output_arch_local_syms
+ && (info->strip != strip_all || emit_relocs))
{
typedef int (*out_sym_func)
(void *, const char *, Elf_Internal_Sym *, asection *,
/* If backend needs to output some symbols not present in the hash
table, do it now. */
- if (bed->elf_backend_output_arch_syms)
+ if (bed->elf_backend_output_arch_syms
+ && (info->strip != strip_all || emit_relocs))
{
typedef int (*out_sym_func)
(void *, const char *, Elf_Internal_Sym *, asection *,
return FALSE;
/* Now we know the size of the symtab section. */
- off += symtab_hdr->sh_size;
-
- symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
- if (symtab_shndx_hdr->sh_name != 0)
+ if (bfd_get_symcount (abfd) > 0)
{
- symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
- symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
- symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
- amt = bfd_get_symcount (abfd) * sizeof (Elf_External_Sym_Shndx);
- symtab_shndx_hdr->sh_size = amt;
+ /* Finish up and write out the symbol string table (.strtab)
+ section. */
+ Elf_Internal_Shdr *symstrtab_hdr;
+ file_ptr off = symtab_hdr->sh_offset + symtab_hdr->sh_size;
- off = _bfd_elf_assign_file_position_for_section (symtab_shndx_hdr,
- off, TRUE);
+ symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ if (symtab_shndx_hdr->sh_name != 0)
+ {
+ symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
+ symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
+ symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
+ amt = bfd_get_symcount (abfd) * sizeof (Elf_External_Sym_Shndx);
+ symtab_shndx_hdr->sh_size = amt;
- if (bfd_seek (abfd, symtab_shndx_hdr->sh_offset, SEEK_SET) != 0
- || (bfd_bwrite (flinfo.symshndxbuf, amt, abfd) != amt))
- return FALSE;
- }
+ off = _bfd_elf_assign_file_position_for_section (symtab_shndx_hdr,
+ off, TRUE);
+ if (bfd_seek (abfd, symtab_shndx_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_bwrite (flinfo.symshndxbuf, amt, abfd) != amt))
+ return FALSE;
+ }
- /* Finish up and write out the symbol string table (.strtab)
- section. */
- symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
- /* sh_name was set in prep_headers. */
- symstrtab_hdr->sh_type = SHT_STRTAB;
- symstrtab_hdr->sh_flags = 0;
- symstrtab_hdr->sh_addr = 0;
- symstrtab_hdr->sh_size = _bfd_stringtab_size (flinfo.symstrtab);
- symstrtab_hdr->sh_entsize = 0;
- symstrtab_hdr->sh_link = 0;
- symstrtab_hdr->sh_info = 0;
- /* sh_offset is set just below. */
- symstrtab_hdr->sh_addralign = 1;
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ /* sh_name was set in prep_headers. */
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+ symstrtab_hdr->sh_flags = 0;
+ symstrtab_hdr->sh_addr = 0;
+ symstrtab_hdr->sh_size = _bfd_stringtab_size (flinfo.symstrtab);
+ symstrtab_hdr->sh_entsize = 0;
+ symstrtab_hdr->sh_link = 0;
+ symstrtab_hdr->sh_info = 0;
+ /* sh_offset is set just below. */
+ symstrtab_hdr->sh_addralign = 1;
- off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, TRUE);
- elf_next_file_pos (abfd) = off;
+ off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr,
+ off, TRUE);
+ elf_next_file_pos (abfd) = off;
- if (bfd_get_symcount (abfd) > 0)
- {
if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, flinfo.symstrtab))
return FALSE;
for (o = abfd->sections; o != NULL; o = o->next)
{
struct bfd_elf_section_data *esdo = elf_section_data (o);
+ bfd_boolean sort;
if ((o->flags & SEC_RELOC) == 0)
continue;
+ sort = bed->sort_relocs_p == NULL || (*bed->sort_relocs_p) (o);
if (esdo->rel.hdr != NULL)
- elf_link_adjust_relocs (abfd, &esdo->rel);
+ elf_link_adjust_relocs (abfd, &esdo->rel, sort);
if (esdo->rela.hdr != NULL)
- elf_link_adjust_relocs (abfd, &esdo->rela);
+ elf_link_adjust_relocs (abfd, &esdo->rela, sort);
/* Set the reloc_count field to 0 to prevent write_relocs from
trying to swap the relocs out itself. */
{
/* The contents of the .dynstr section are actually in a
stringtab. */
+ file_ptr off;
+
off = elf_section_data (o->output_section)->this_hdr.sh_offset;
if (bfd_seek (abfd, off, SEEK_SET) != 0
|| ! _bfd_elf_strtab_emit (abfd,
{
bfd *i;
- for (i = info->input_bfds; i; i = i->link_next)
+ for (i = info->input_bfds; i; i = i->link.next)
{
sec = bfd_get_section_by_name (i, sec_name);
if (sec)
|| ELF_ST_BIND (cookie->locsyms[r_symndx].st_info) != STB_LOCAL)
{
h = cookie->sym_hashes[r_symndx - cookie->extsymoff];
+ if (h == NULL)
+ {
+ info->callbacks->einfo (_("%F%P: corrupt input: %B\n"),
+ sec->owner);
+ return NULL;
+ }
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
return ret;
}
+/* Scan and mark sections in a special or debug section group. */
+
+static void
+_bfd_elf_gc_mark_debug_special_section_group (asection *grp)
+{
+ /* Point to first section of section group. */
+ asection *ssec;
+ /* Used to iterate the section group. */
+ asection *msec;
+
+ bfd_boolean is_special_grp = TRUE;
+ bfd_boolean is_debug_grp = TRUE;
+
+ /* First scan to see if group contains any section other than debug
+ and special section. */
+ ssec = msec = elf_next_in_group (grp);
+ do
+ {
+ if ((msec->flags & SEC_DEBUGGING) == 0)
+ is_debug_grp = FALSE;
+
+ if ((msec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) != 0)
+ is_special_grp = FALSE;
+
+ msec = elf_next_in_group (msec);
+ }
+ while (msec != ssec);
+
+ /* If this is a pure debug section group or pure special section group,
+ keep all sections in this group. */
+ if (is_debug_grp || is_special_grp)
+ {
+ do
+ {
+ msec->gc_mark = 1;
+ msec = elf_next_in_group (msec);
+ }
+ while (msec != ssec);
+ }
+}
+
/* Keep debug and special sections. */
bfd_boolean
{
bfd *ibfd;
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
asection *isec;
bfd_boolean some_kept;
continue;
/* Keep debug and special sections like .comment when they are
- not part of a group, or when we have single-member groups. */
+ not part of a group. Also keep section groups that contain
+ just debug sections or special sections. */
for (isec = ibfd->sections; isec != NULL; isec = isec->next)
- if ((elf_next_in_group (isec) == NULL
- || elf_next_in_group (isec) == isec)
- && ((isec->flags & SEC_DEBUGGING) != 0
- || (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0))
- isec->gc_mark = 1;
+ {
+ if ((isec->flags & SEC_GROUP) != 0)
+ _bfd_elf_gc_mark_debug_special_section_group (isec);
+ else if (((isec->flags & SEC_DEBUGGING) != 0
+ || (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0)
+ && elf_next_in_group (isec) == NULL)
+ isec->gc_mark = 1;
+ }
if (! debug_frag_seen)
continue;
if (!h->mark
&& (((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
- && !(h->def_regular
+ && !((h->def_regular || ELF_COMMON_DEF_P (h))
&& h->root.u.def.section->gc_mark))
|| h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak))
unsigned long section_sym_count;
struct elf_gc_sweep_symbol_info sweep_info;
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *o;
info we collected before. */
if (gc_sweep_hook
&& (o->flags & SEC_RELOC) != 0
- && o->reloc_count > 0
+ && o->reloc_count != 0
+ && !((info->strip == strip_all || info->strip == strip_debugger)
+ && (o->flags & SEC_DEBUGGING) != 0)
&& !bfd_is_abs_section (o->output_section))
{
Elf_Internal_Rela *internal_relocs;
bfd_elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info = (struct bfd_link_info *) inf;
+ struct bfd_elf_dynamic_list *d = info->dynamic_list;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& (h->ref_dynamic
- || ((!info->executable || info->export_dynamic)
- && h->def_regular
+ || ((h->def_regular || ELF_COMMON_DEF_P (h))
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
+ && (!info->executable
+ || info->export_dynamic
+ || (h->dynamic
+ && d != NULL
+ && (*d->match) (&d->head, NULL, h->root.root.string)))
&& (strchr (h->root.root.string, ELF_VER_CHR) != NULL
|| !bfd_hide_sym_by_version (info->version_info,
h->root.root.string)))))
bfd *sub;
elf_gc_mark_hook_fn gc_mark_hook;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct elf_link_hash_table *htab;
if (!bed->can_gc_sections
|| !is_elf_hash_table (info->hash))
}
bed->gc_keep (info);
+ htab = elf_hash_table (info);
/* Try to parse each bfd's .eh_frame section. Point elf_eh_frame_section
at the .eh_frame section if we can mark the FDEs individually. */
- _bfd_elf_begin_eh_frame_parsing (info);
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *sec;
struct elf_reloc_cookie cookie;
sec = bfd_get_next_section_by_name (sec);
}
}
- _bfd_elf_end_eh_frame_parsing (info);
/* Apply transitive closure to the vtable entry usage info. */
- elf_link_hash_traverse (elf_hash_table (info),
- elf_gc_propagate_vtable_entries_used,
- &ok);
+ elf_link_hash_traverse (htab, elf_gc_propagate_vtable_entries_used, &ok);
if (!ok)
return FALSE;
/* Kill the vtable relocations that were not used. */
- elf_link_hash_traverse (elf_hash_table (info),
- elf_gc_smash_unused_vtentry_relocs,
- &ok);
+ elf_link_hash_traverse (htab, elf_gc_smash_unused_vtentry_relocs, &ok);
if (!ok)
return FALSE;
/* Mark dynamically referenced symbols. */
- if (elf_hash_table (info)->dynamic_sections_created)
- elf_link_hash_traverse (elf_hash_table (info),
- bed->gc_mark_dynamic_ref,
- info);
+ if (htab->dynamic_sections_created)
+ elf_link_hash_traverse (htab, bed->gc_mark_dynamic_ref, info);
/* Grovel through relocs to find out who stays ... */
gc_mark_hook = bed->gc_mark_hook;
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *o;
win:
if (!child->vtable)
{
- child->vtable = (struct elf_link_virtual_table_entry *)
- bfd_zalloc (abfd, sizeof (*child->vtable));
+ child->vtable = ((struct elf_link_virtual_table_entry *)
+ bfd_zalloc (abfd, sizeof (*child->vtable)));
if (!child->vtable)
return FALSE;
}
if (!h->vtable)
{
- h->vtable = (struct elf_link_virtual_table_entry *)
- bfd_zalloc (abfd, sizeof (*h->vtable));
+ h->vtable = ((struct elf_link_virtual_table_entry *)
+ bfd_zalloc (abfd, sizeof (*h->vtable)));
if (!h->vtable)
return FALSE;
}
gotoff = bed->got_header_size;
/* Do the local .got entries first. */
- for (i = info->input_bfds; i; i = i->link_next)
+ for (i = info->input_bfds; i; i = i->link.next)
{
bfd_signed_vma *local_got;
bfd_size_type j, locsymcount;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
- && discarded_section (h->root.u.def.section))
+ && (h->root.u.def.section->owner != rcookie->abfd
+ || h->root.u.def.section->kept_section != NULL
+ || discarded_section (h->root.u.def.section)))
return TRUE;
- else
- return FALSE;
}
else
{
/* Need to: get the symbol; get the section. */
isym = &rcookie->locsyms[r_symndx];
isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx);
- if (isec != NULL && discarded_section (isec))
+ if (isec != NULL
+ && (isec->kept_section != NULL
+ || discarded_section (isec)))
return TRUE;
}
return FALSE;
}
/* Discard unneeded references to discarded sections.
- Returns TRUE if any section's size was changed. */
-/* This function assumes that the relocations are in sorted order,
- which is true for all known assemblers. */
+ Returns -1 on error, 1 if any section's size was changed, 0 if
+ nothing changed. This function assumes that the relocations are in
+ sorted order, which is true for all known assemblers. */
-bfd_boolean
+int
bfd_elf_discard_info (bfd *output_bfd, struct bfd_link_info *info)
{
struct elf_reloc_cookie cookie;
- asection *stab, *eh;
- const struct elf_backend_data *bed;
+ asection *o;
bfd *abfd;
- bfd_boolean ret = FALSE;
+ int changed = 0;
if (info->traditional_format
|| !is_elf_hash_table (info->hash))
- return FALSE;
+ return 0;
- _bfd_elf_begin_eh_frame_parsing (info);
- for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
+ o = bfd_get_section_by_name (output_bfd, ".stab");
+ if (o != NULL)
{
- if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
- continue;
+ asection *i;
- bed = get_elf_backend_data (abfd);
-
- eh = NULL;
- if (!info->relocatable)
+ for (i = o->map_head.s; i != NULL; i = i->map_head.s)
{
- eh = bfd_get_section_by_name (abfd, ".eh_frame");
- while (eh != NULL
- && (eh->size == 0
- || bfd_is_abs_section (eh->output_section)))
- eh = bfd_get_next_section_by_name (eh);
- }
-
- stab = bfd_get_section_by_name (abfd, ".stab");
- if (stab != NULL
- && (stab->size == 0
- || bfd_is_abs_section (stab->output_section)
- || stab->sec_info_type != SEC_INFO_TYPE_STABS))
- stab = NULL;
+ if (i->size == 0
+ || i->reloc_count == 0
+ || i->sec_info_type != SEC_INFO_TYPE_STABS)
+ continue;
- if (stab == NULL
- && eh == NULL
- && bed->elf_backend_discard_info == NULL)
- continue;
+ abfd = i->owner;
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ continue;
- if (!init_reloc_cookie (&cookie, info, abfd))
- return FALSE;
+ if (!init_reloc_cookie_for_section (&cookie, info, i))
+ return -1;
- if (stab != NULL
- && stab->reloc_count > 0
- && init_reloc_cookie_rels (&cookie, info, abfd, stab))
- {
- if (_bfd_discard_section_stabs (abfd, stab,
- elf_section_data (stab)->sec_info,
+ if (_bfd_discard_section_stabs (abfd, i,
+ elf_section_data (i)->sec_info,
bfd_elf_reloc_symbol_deleted_p,
&cookie))
- ret = TRUE;
- fini_reloc_cookie_rels (&cookie, stab);
+ changed = 1;
+
+ fini_reloc_cookie_for_section (&cookie, i);
}
+ }
+
+ o = bfd_get_section_by_name (output_bfd, ".eh_frame");
+ if (o != NULL)
+ {
+ asection *i;
- while (eh != NULL
- && init_reloc_cookie_rels (&cookie, info, abfd, eh))
+ for (i = o->map_head.s; i != NULL; i = i->map_head.s)
{
- _bfd_elf_parse_eh_frame (abfd, info, eh, &cookie);
- if (_bfd_elf_discard_section_eh_frame (abfd, info, eh,
+ if (i->size == 0)
+ continue;
+
+ abfd = i->owner;
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ continue;
+
+ if (!init_reloc_cookie_for_section (&cookie, info, i))
+ return -1;
+
+ _bfd_elf_parse_eh_frame (abfd, info, i, &cookie);
+ if (_bfd_elf_discard_section_eh_frame (abfd, info, i,
bfd_elf_reloc_symbol_deleted_p,
&cookie))
- ret = TRUE;
- fini_reloc_cookie_rels (&cookie, eh);
- eh = bfd_get_next_section_by_name (eh);
+ changed = 1;
+
+ fini_reloc_cookie_for_section (&cookie, i);
}
+ }
+
+ for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link.next)
+ {
+ const struct elf_backend_data *bed;
+
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ continue;
+
+ bed = get_elf_backend_data (abfd);
+
+ if (bed->elf_backend_discard_info != NULL)
+ {
+ if (!init_reloc_cookie (&cookie, info, abfd))
+ return -1;
- if (bed->elf_backend_discard_info != NULL
- && (*bed->elf_backend_discard_info) (abfd, &cookie, info))
- ret = TRUE;
+ if ((*bed->elf_backend_discard_info) (abfd, &cookie, info))
+ changed = 1;
- fini_reloc_cookie (&cookie, abfd);
+ fini_reloc_cookie (&cookie, abfd);
+ }
}
- _bfd_elf_end_eh_frame_parsing (info);
if (info->eh_frame_hdr
&& !info->relocatable
&& _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info))
- ret = TRUE;
+ changed = 1;
- return ret;
+ return changed;
}
bfd_boolean
string table associated with ABFD. */
asection *
-_bfd_elf_make_dynamic_reloc_section (asection * sec,
- bfd * dynobj,
- unsigned int alignment,
- bfd * abfd,
- bfd_boolean is_rela)
+_bfd_elf_make_dynamic_reloc_section (asection *sec,
+ bfd *dynobj,
+ unsigned int alignment,
+ bfd *abfd,
+ bfd_boolean is_rela)
{
asection * reloc_sec = elf_section_data (sec)->sreloc;
return reloc_sec;
}
-/* Copy the ELF symbol type associated with a linker hash entry. */
+/* Copy the ELF symbol type and other attributes for a linker script
+ assignment from HSRC to HDEST. Generally this should be treated as
+ if we found a strong non-dynamic definition for HDEST (except that
+ ld ignores multiple definition errors). */
void
-_bfd_elf_copy_link_hash_symbol_type (bfd *abfd ATTRIBUTE_UNUSED,
- struct bfd_link_hash_entry * hdest,
- struct bfd_link_hash_entry * hsrc)
+_bfd_elf_copy_link_hash_symbol_type (bfd *abfd,
+ struct bfd_link_hash_entry *hdest,
+ struct bfd_link_hash_entry *hsrc)
{
- struct elf_link_hash_entry *ehdest = (struct elf_link_hash_entry *)hdest;
- struct elf_link_hash_entry *ehsrc = (struct elf_link_hash_entry *)hsrc;
+ struct elf_link_hash_entry *ehdest = (struct elf_link_hash_entry *) hdest;
+ struct elf_link_hash_entry *ehsrc = (struct elf_link_hash_entry *) hsrc;
+ Elf_Internal_Sym isym;
ehdest->type = ehsrc->type;
ehdest->target_internal = ehsrc->target_internal;
+
+ isym.st_other = ehsrc->other;
+ elf_merge_st_other (abfd, ehdest, &isym, TRUE, FALSE);
}
/* Append a RELA relocation REL to section S in BFD. */
projects / deliverable / binutils-gdb.git / blobdiff