/* ELF linker support.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* ELF linker code. */
-/* This struct is used to pass information to routines called via
- elf_link_hash_traverse which must return failure. */
-
-struct elf_info_failed
-{
- boolean failed;
- struct bfd_link_info *info;
- struct bfd_elf_version_tree *verdefs;
-};
-
-static boolean is_global_data_symbol_definition
+static bfd_boolean is_global_data_symbol_definition
PARAMS ((bfd *, Elf_Internal_Sym *));
-static boolean elf_link_is_defined_archive_symbol
+static bfd_boolean elf_link_is_defined_archive_symbol
PARAMS ((bfd *, carsym *));
-static boolean elf_link_add_object_symbols
+static bfd_boolean elf_link_add_object_symbols
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_link_add_archive_symbols
+static bfd_boolean elf_link_add_archive_symbols
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_merge_symbol
- PARAMS ((bfd *, struct bfd_link_info *, const char *,
- Elf_Internal_Sym *, asection **, bfd_vma *,
- struct elf_link_hash_entry **, boolean *, boolean *,
- boolean *, boolean));
-static boolean elf_add_default_symbol
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- const char *, Elf_Internal_Sym *, asection **, bfd_vma *,
- boolean *, boolean, boolean));
-static boolean elf_export_symbol
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_finalize_dynstr
+static bfd_boolean elf_finalize_dynstr
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_fix_symbol_flags
- PARAMS ((struct elf_link_hash_entry *, struct elf_info_failed *));
-static boolean elf_adjust_dynamic_symbol
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_find_version_dependencies
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_find_version_dependencies
+static bfd_boolean elf_collect_hash_codes
PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_assign_sym_version
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_collect_hash_codes
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_read_relocs_from_section
- PARAMS ((bfd *, Elf_Internal_Shdr *, PTR, Elf_Internal_Rela *));
static size_t compute_bucket_count
PARAMS ((struct bfd_link_info *));
-static void elf_link_output_relocs
- PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *));
-static boolean elf_link_size_reloc_section
- PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
static void elf_link_adjust_relocs
PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned int,
struct elf_link_hash_entry **));
PARAMS ((const void *, const void *));
static size_t elf_link_sort_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection **));
-static boolean elf_section_ignore_discarded_relocs
+static bfd_boolean elf_section_ignore_discarded_relocs
PARAMS ((asection *));
/* Given an ELF BFD, add symbols to the global hash table as
appropriate. */
-boolean
+bfd_boolean
elf_bfd_link_add_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
return elf_link_add_archive_symbols (abfd, info);
default:
bfd_set_error (bfd_error_wrong_format);
- return false;
+ return FALSE;
}
}
\f
-/* Return true iff this is a non-common, definition of a non-function symbol. */
-static boolean
+/* Return TRUE iff this is a non-common, definition of a non-function symbol. */
+static bfd_boolean
is_global_data_symbol_definition (abfd, sym)
bfd * abfd ATTRIBUTE_UNUSED;
Elf_Internal_Sym * sym;
/* Local symbols do not count, but target specific ones might. */
if (ELF_ST_BIND (sym->st_info) != STB_GLOBAL
&& ELF_ST_BIND (sym->st_info) < STB_LOOS)
- return false;
+ return FALSE;
/* Function symbols do not count. */
if (ELF_ST_TYPE (sym->st_info) == STT_FUNC)
- return false;
+ return FALSE;
/* If the section is undefined, then so is the symbol. */
if (sym->st_shndx == SHN_UNDEF)
- return false;
+ return FALSE;
/* If the symbol is defined in the common section, then
it is a common definition and so does not count. */
if (sym->st_shndx == SHN_COMMON)
- return false;
+ return FALSE;
/* If the symbol is in a target specific section then we
must rely upon the backend to tell us what it is. */
Instead for now assume that the definition is not global,
Even if this is wrong, at least the linker will behave
in the same way that it used to do. */
- return false;
+ return FALSE;
- return true;
+ return TRUE;
}
/* Search the symbol table of the archive element of the archive ABFD
whose archive map contains a mention of SYMDEF, and determine if
the symbol is defined in this element. */
-static boolean
+static bfd_boolean
elf_link_is_defined_archive_symbol (abfd, symdef)
bfd * abfd;
carsym * symdef;
{
Elf_Internal_Shdr * hdr;
- Elf_Internal_Shdr * shndx_hdr;
- Elf_External_Sym * esym;
- Elf_External_Sym * esymend;
- Elf_External_Sym * buf = NULL;
- Elf_External_Sym_Shndx * shndx_buf = NULL;
- Elf_External_Sym_Shndx * shndx;
bfd_size_type symcount;
bfd_size_type extsymcount;
bfd_size_type extsymoff;
- boolean result = false;
- file_ptr pos;
- bfd_size_type amt;
+ Elf_Internal_Sym *isymbuf;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
+ bfd_boolean result;
abfd = _bfd_get_elt_at_filepos (abfd, symdef->file_offset);
if (abfd == (bfd *) NULL)
- return false;
+ return FALSE;
if (! bfd_check_format (abfd, bfd_object))
- return false;
+ 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;
+ return FALSE;
/* Select the appropriate symbol table. */
if ((abfd->flags & DYNAMIC) == 0 || elf_dynsymtab (abfd) == 0)
- {
- hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
- }
+ hdr = &elf_tdata (abfd)->symtab_hdr;
else
- {
- hdr = &elf_tdata (abfd)->dynsymtab_hdr;
- shndx_hdr = NULL;
- }
+ hdr = &elf_tdata (abfd)->dynsymtab_hdr;
symcount = hdr->sh_size / sizeof (Elf_External_Sym);
extsymoff = hdr->sh_info;
}
- amt = extsymcount * sizeof (Elf_External_Sym);
- buf = (Elf_External_Sym *) bfd_malloc (amt);
- if (buf == NULL && extsymcount != 0)
- return false;
+ if (extsymcount == 0)
+ return FALSE;
- /* Read in the symbol table.
- FIXME: This ought to be cached somewhere. */
- pos = hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym);
- if (bfd_seek (abfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) buf, amt, abfd) != amt)
- goto error_exit;
-
- if (shndx_hdr != NULL && shndx_hdr->sh_size != 0)
- {
- amt = extsymcount * sizeof (Elf_External_Sym_Shndx);
- shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (shndx_buf == NULL && extsymcount != 0)
- goto error_exit;
-
- pos = shndx_hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym_Shndx);
- if (bfd_seek (abfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
- goto error_exit;
- }
+ /* Read in the symbol table. */
+ isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ return FALSE;
/* Scan the symbol table looking for SYMDEF. */
- esymend = buf + extsymcount;
- for (esym = buf, shndx = shndx_buf;
- esym < esymend;
- esym++, shndx = (shndx != NULL ? shndx + 1 : NULL))
+ result = FALSE;
+ for (isym = isymbuf, isymend = isymbuf + extsymcount; isym < isymend; isym++)
{
- Elf_Internal_Sym sym;
- const char * name;
-
- elf_swap_symbol_in (abfd, esym, shndx, &sym);
+ const char *name;
- name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name);
+ name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ isym->st_name);
if (name == (const char *) NULL)
break;
if (strcmp (name, symdef->name) == 0)
{
- result = is_global_data_symbol_definition (abfd, & sym);
+ result = is_global_data_symbol_definition (abfd, isym);
break;
}
}
- error_exit:
- if (shndx_buf != NULL)
- free (shndx_buf);
- if (buf != NULL)
- free (buf);
+ free (isymbuf);
return result;
}
Unfortunately, we do have to make multiple passes over the symbol
table until nothing further is resolved. */
-static boolean
+static bfd_boolean
elf_link_add_archive_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
symindex c;
- boolean *defined = NULL;
- boolean *included = NULL;
+ bfd_boolean *defined = NULL;
+ bfd_boolean *included = NULL;
carsym *symdefs;
- boolean loop;
+ bfd_boolean loop;
bfd_size_type amt;
if (! bfd_has_map (abfd))
{
/* An empty archive is a special case. */
if (bfd_openr_next_archived_file (abfd, (bfd *) NULL) == NULL)
- return true;
+ return TRUE;
bfd_set_error (bfd_error_no_armap);
- return false;
+ return FALSE;
}
/* Keep track of all symbols we know to be already defined, and all
second and subsequent passes. */
c = bfd_ardata (abfd)->symdef_count;
if (c == 0)
- return true;
+ return TRUE;
amt = c;
- amt *= sizeof (boolean);
- defined = (boolean *) bfd_malloc (amt);
- included = (boolean *) bfd_malloc (amt);
- if (defined == (boolean *) NULL || included == (boolean *) NULL)
+ amt *= sizeof (bfd_boolean);
+ defined = (bfd_boolean *) bfd_zmalloc (amt);
+ included = (bfd_boolean *) bfd_zmalloc (amt);
+ if (defined == (bfd_boolean *) NULL || included == (bfd_boolean *) NULL)
goto error_return;
- memset (defined, 0, (size_t) amt);
- memset (included, 0, (size_t) amt);
symdefs = bfd_ardata (abfd)->symdefs;
carsym *symdef;
carsym *symdefend;
- loop = false;
+ loop = FALSE;
last = -1;
symdef = symdefs;
continue;
if (symdef->file_offset == last)
{
- included[i] = true;
+ included[i] = TRUE;
continue;
}
h = elf_link_hash_lookup (elf_hash_table (info), symdef->name,
- false, false, false);
+ FALSE, FALSE, FALSE);
if (h == NULL)
{
char *p, *copy;
+ size_t len, first;
/* If this is a default version (the name contains @@),
- look up the symbol again without the version. The
- effect is that references to the symbol without the
- version will be matched by the default symbol in the
- archive. */
+ look up the symbol again with only one `@' as well
+ as without the version. The effect is that references
+ to the symbol with and without the version will be
+ matched by the default symbol in the archive. */
p = strchr (symdef->name, ELF_VER_CHR);
if (p == NULL || p[1] != ELF_VER_CHR)
continue;
- copy = bfd_alloc (abfd, (bfd_size_type) (p - symdef->name + 1));
+ /* First check with only one `@'. */
+ len = strlen (symdef->name);
+ copy = bfd_alloc (abfd, (bfd_size_type) len);
if (copy == NULL)
goto error_return;
- memcpy (copy, symdef->name, (size_t) (p - symdef->name));
- copy[p - symdef->name] = '\0';
+ first = p - symdef->name + 1;
+ memcpy (copy, symdef->name, first);
+ memcpy (copy + first, symdef->name + first + 1, len - first);
h = elf_link_hash_lookup (elf_hash_table (info), copy,
- false, false, false);
+ FALSE, FALSE, FALSE);
+
+ if (h == NULL)
+ {
+ /* We also need to check references to the symbol
+ without the version. */
+
+ copy[first - 1] = '\0';
+ h = elf_link_hash_lookup (elf_hash_table (info),
+ copy, FALSE, FALSE, FALSE);
+ }
bfd_release (abfd, copy);
}
else if (h->root.type != bfd_link_hash_undefined)
{
if (h->root.type != bfd_link_hash_undefweak)
- defined[i] = true;
+ defined[i] = TRUE;
continue;
}
does not require another pass. This isn't a bug, but it
does make the code less efficient than it could be. */
if (undefs_tail != info->hash->undefs_tail)
- loop = true;
+ loop = TRUE;
/* Look backward to mark all symbols from this object file
which we have already seen in this pass. */
mark = i;
do
{
- included[mark] = true;
+ included[mark] = TRUE;
if (mark == 0)
break;
--mark;
free (defined);
free (included);
- return true;
+ return TRUE;
error_return:
- if (defined != (boolean *) NULL)
+ if (defined != (bfd_boolean *) NULL)
free (defined);
- if (included != (boolean *) NULL)
+ if (included != (bfd_boolean *) NULL)
free (included);
- return false;
-}
-
-/* This function is called when we want to define a new symbol. It
- handles the various cases which arise when we find a definition in
- a dynamic object, or when there is already a definition in a
- dynamic object. The new symbol is described by NAME, SYM, PSEC,
- and PVALUE. We set SYM_HASH to the hash table entry. We set
- OVERRIDE if the old symbol is overriding a new definition. We set
- TYPE_CHANGE_OK if it is OK for the type to change. We set
- SIZE_CHANGE_OK if it is OK for the size to change. By OK to
- change, we mean that we shouldn't warn if the type or size does
- change. DT_NEEDED indicates if it comes from a DT_NEEDED entry of
- a shared object. */
-
-static boolean
-elf_merge_symbol (abfd, info, name, sym, psec, pvalue, sym_hash,
- override, type_change_ok, size_change_ok, dt_needed)
- bfd *abfd;
- struct bfd_link_info *info;
- const char *name;
- Elf_Internal_Sym *sym;
- asection **psec;
- bfd_vma *pvalue;
- struct elf_link_hash_entry **sym_hash;
- boolean *override;
- boolean *type_change_ok;
- boolean *size_change_ok;
- boolean dt_needed;
-{
- asection *sec;
- struct elf_link_hash_entry *h;
- int bind;
- bfd *oldbfd;
- boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon;
-
- *override = false;
-
- sec = *psec;
- bind = ELF_ST_BIND (sym->st_info);
-
- if (! bfd_is_und_section (sec))
- h = elf_link_hash_lookup (elf_hash_table (info), name, true, false, false);
- else
- h = ((struct elf_link_hash_entry *)
- bfd_wrapped_link_hash_lookup (abfd, info, name, true, false, false));
- if (h == NULL)
- return false;
- *sym_hash = h;
-
- /* This code is for coping with dynamic objects, and is only useful
- if we are doing an ELF link. */
- if (info->hash->creator != abfd->xvec)
- return true;
-
- /* For merging, we only care about real symbols. */
-
- 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;
-
- /* If we just created the symbol, mark it as being an ELF symbol.
- Other than that, there is nothing to do--there is no merge issue
- with a newly defined symbol--so we just return. */
-
- if (h->root.type == bfd_link_hash_new)
- {
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
- return true;
- }
-
- /* OLDBFD is a BFD associated with the existing symbol. */
-
- switch (h->root.type)
- {
- default:
- oldbfd = NULL;
- break;
-
- case bfd_link_hash_undefined:
- case bfd_link_hash_undefweak:
- oldbfd = h->root.u.undef.abfd;
- break;
-
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- oldbfd = h->root.u.def.section->owner;
- break;
-
- case bfd_link_hash_common:
- oldbfd = h->root.u.c.p->section->owner;
- break;
- }
-
- /* In cases involving weak versioned symbols, we may wind up trying
- to merge a symbol with itself. Catch that here, to avoid the
- confusion that results if we try to override a symbol with
- itself. The additional tests catch cases like
- _GLOBAL_OFFSET_TABLE_, which are regular symbols defined in a
- dynamic object, which we do want to handle here. */
- if (abfd == oldbfd
- && ((abfd->flags & DYNAMIC) == 0
- || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
- return true;
-
- /* NEWDYN and OLDDYN indicate whether the new or old symbol,
- respectively, is from a dynamic object. */
-
- if ((abfd->flags & DYNAMIC) != 0)
- newdyn = true;
- else
- newdyn = false;
-
- if (oldbfd != NULL)
- olddyn = (oldbfd->flags & DYNAMIC) != 0;
- else
- {
- asection *hsec;
-
- /* This code handles the special SHN_MIPS_{TEXT,DATA} section
- indices used by MIPS ELF. */
- switch (h->root.type)
- {
- default:
- hsec = NULL;
- break;
-
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- hsec = h->root.u.def.section;
- break;
-
- case bfd_link_hash_common:
- hsec = h->root.u.c.p->section;
- break;
- }
-
- if (hsec == NULL)
- olddyn = false;
- else
- olddyn = (hsec->symbol->flags & BSF_DYNAMIC) != 0;
- }
-
- /* NEWDEF and OLDDEF indicate whether the new or old symbol,
- respectively, appear to be a definition rather than reference. */
-
- if (bfd_is_und_section (sec) || bfd_is_com_section (sec))
- newdef = false;
- else
- newdef = true;
-
- if (h->root.type == bfd_link_hash_undefined
- || h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_common)
- olddef = false;
- else
- olddef = true;
-
- /* NEWDYNCOMMON and OLDDYNCOMMON indicate whether the new or old
- symbol, respectively, appears to be a common symbol in a dynamic
- object. If a symbol appears in an uninitialized section, and is
- not weak, and is not a function, then it may be a common symbol
- which was resolved when the dynamic object was created. We want
- to treat such symbols specially, because they raise special
- considerations when setting the symbol size: if the symbol
- appears as a common symbol in a regular object, and the size in
- the regular object is larger, we must make sure that we use the
- larger size. This problematic case can always be avoided in C,
- but it must be handled correctly when using Fortran shared
- libraries.
-
- Note that if NEWDYNCOMMON is set, NEWDEF will be set, and
- likewise for OLDDYNCOMMON and OLDDEF.
-
- Note that this test is just a heuristic, and that it is quite
- possible to have an uninitialized symbol in a shared object which
- is really a definition, rather than a common symbol. This could
- lead to some minor confusion when the symbol really is a common
- symbol in some regular object. However, I think it will be
- harmless. */
-
- if (newdyn
- && newdef
- && (sec->flags & SEC_ALLOC) != 0
- && (sec->flags & SEC_LOAD) == 0
- && sym->st_size > 0
- && bind != STB_WEAK
- && ELF_ST_TYPE (sym->st_info) != STT_FUNC)
- newdyncommon = true;
- else
- newdyncommon = false;
-
- if (olddyn
- && olddef
- && h->root.type == bfd_link_hash_defined
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->root.u.def.section->flags & SEC_ALLOC) != 0
- && (h->root.u.def.section->flags & SEC_LOAD) == 0
- && h->size > 0
- && h->type != STT_FUNC)
- olddyncommon = true;
- else
- olddyncommon = false;
-
- /* It's OK to change the type if either the existing symbol or the
- new symbol is weak unless it comes from a DT_NEEDED entry of
- a shared object, in which case, the DT_NEEDED entry may not be
- required at the run time. */
-
- if ((! dt_needed && h->root.type == bfd_link_hash_defweak)
- || h->root.type == bfd_link_hash_undefweak
- || bind == STB_WEAK)
- *type_change_ok = true;
-
- /* It's OK to change the size if either the existing symbol or the
- new symbol is weak, or if the old symbol is undefined. */
-
- if (*type_change_ok
- || h->root.type == bfd_link_hash_undefined)
- *size_change_ok = true;
-
- /* If both the old and the new symbols look like common symbols in a
- dynamic object, set the size of the symbol to the larger of the
- two. */
-
- if (olddyncommon
- && newdyncommon
- && sym->st_size != h->size)
- {
- /* Since we think we have two common symbols, issue a multiple
- common warning if desired. Note that we only warn if the
- size is different. If the size is the same, we simply let
- the old symbol override the new one as normally happens with
- symbols defined in dynamic objects. */
-
- if (! ((*info->callbacks->multiple_common)
- (info, h->root.root.string, oldbfd, bfd_link_hash_common,
- h->size, abfd, bfd_link_hash_common, sym->st_size)))
- return false;
-
- if (sym->st_size > h->size)
- h->size = sym->st_size;
-
- *size_change_ok = true;
- }
-
- /* If we are looking at a dynamic object, and we have found a
- definition, we need to see if the symbol was already defined by
- some other object. If so, we want to use the existing
- definition, and we do not want to report a multiple symbol
- definition error; we do this by clobbering *PSEC to be
- bfd_und_section_ptr.
-
- We treat a common symbol as a definition if the symbol in the
- shared library is a function, since common symbols always
- represent variables; this can cause confusion in principle, but
- any such confusion would seem to indicate an erroneous program or
- shared library. We also permit a common symbol in a regular
- object to override a weak symbol in a shared object.
-
- We prefer a non-weak definition in a shared library to a weak
- definition in the executable unless it comes from a DT_NEEDED
- entry of a shared object, in which case, the DT_NEEDED entry
- may not be required at the run time. */
-
- if (newdyn
- && newdef
- && (olddef
- || (h->root.type == bfd_link_hash_common
- && (bind == STB_WEAK
- || ELF_ST_TYPE (sym->st_info) == STT_FUNC)))
- && (h->root.type != bfd_link_hash_defweak
- || dt_needed
- || bind == STB_WEAK))
- {
- *override = true;
- newdef = false;
- newdyncommon = false;
-
- *psec = sec = bfd_und_section_ptr;
- *size_change_ok = true;
-
- /* If we get here when the old symbol is a common symbol, then
- we are explicitly letting it override a weak symbol or
- function in a dynamic object, and we don't want to warn about
- a type change. If the old symbol is a defined symbol, a type
- change warning may still be appropriate. */
-
- if (h->root.type == bfd_link_hash_common)
- *type_change_ok = true;
- }
-
- /* Handle the special case of an old common symbol merging with a
- new symbol which looks like a common symbol in a shared object.
- We change *PSEC and *PVALUE to make the new symbol look like a
- common symbol, and let _bfd_generic_link_add_one_symbol will do
- the right thing. */
-
- if (newdyncommon
- && h->root.type == bfd_link_hash_common)
- {
- *override = true;
- newdef = false;
- newdyncommon = false;
- *pvalue = sym->st_size;
- *psec = sec = bfd_com_section_ptr;
- *size_change_ok = true;
- }
-
- /* If the old symbol is from a dynamic object, and the new symbol is
- a definition which is not from a dynamic object, then the new
- symbol overrides the old symbol. Symbols from regular files
- always take precedence over symbols from dynamic objects, even if
- they are defined after the dynamic object in the link.
-
- As above, we again permit a common symbol in a regular object to
- override a definition in a shared object if the shared object
- symbol is a function or is weak.
-
- As above, we permit a non-weak definition in a shared object to
- override a weak definition in a regular object. */
-
- if (! newdyn
- && (newdef
- || (bfd_is_com_section (sec)
- && (h->root.type == bfd_link_hash_defweak
- || h->type == STT_FUNC)))
- && olddyn
- && olddef
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (bind != STB_WEAK
- || h->root.type == bfd_link_hash_defweak))
- {
- /* Change the hash table entry to undefined, and let
- _bfd_generic_link_add_one_symbol do the right thing with the
- new definition. */
-
- h->root.type = bfd_link_hash_undefined;
- h->root.u.undef.abfd = h->root.u.def.section->owner;
- *size_change_ok = true;
-
- olddef = false;
- olddyncommon = false;
-
- /* We again permit a type change when a common symbol may be
- overriding a function. */
-
- if (bfd_is_com_section (sec))
- *type_change_ok = true;
-
- /* This union may have been set to be non-NULL when this symbol
- was seen in a dynamic object. We must force the union to be
- NULL, so that it is correct for a regular symbol. */
-
- h->verinfo.vertree = NULL;
-
- /* In this special case, if H is the target of an indirection,
- we want the caller to frob with H rather than with the
- indirect symbol. That will permit the caller to redefine the
- target of the indirection, rather than the indirect symbol
- itself. FIXME: This will break the -y option if we store a
- symbol with a different name. */
- *sym_hash = h;
- }
-
- /* Handle the special case of a new common symbol merging with an
- old symbol that looks like it might be a common symbol defined in
- a shared object. Note that we have already handled the case in
- which a new common symbol should simply override the definition
- in the shared library. */
-
- if (! newdyn
- && bfd_is_com_section (sec)
- && olddyncommon)
- {
- /* It would be best if we could set the hash table entry to a
- common symbol, but we don't know what to use for the section
- or the alignment. */
- if (! ((*info->callbacks->multiple_common)
- (info, h->root.root.string, oldbfd, bfd_link_hash_common,
- h->size, abfd, bfd_link_hash_common, sym->st_size)))
- return false;
-
- /* If the predumed common symbol in the dynamic object is
- larger, pretend that the new symbol has its size. */
-
- if (h->size > *pvalue)
- *pvalue = h->size;
-
- /* FIXME: We no longer know the alignment required by the symbol
- in the dynamic object, so we just wind up using the one from
- the regular object. */
-
- olddef = false;
- olddyncommon = false;
-
- h->root.type = bfd_link_hash_undefined;
- h->root.u.undef.abfd = h->root.u.def.section->owner;
-
- *size_change_ok = true;
- *type_change_ok = true;
-
- h->verinfo.vertree = NULL;
- }
-
- /* Handle the special case of a weak definition in a regular object
- followed by a non-weak definition in a shared object. In this
- case, we prefer the definition in the shared object unless it
- comes from a DT_NEEDED entry of a shared object, in which case,
- the DT_NEEDED entry may not be required at the run time. */
- if (olddef
- && ! dt_needed
- && h->root.type == bfd_link_hash_defweak
- && newdef
- && newdyn
- && bind != STB_WEAK)
- {
- /* To make this work we have to frob the flags so that the rest
- of the code does not think we are using the regular
- definition. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
- h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
- else if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
- h->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC;
- h->elf_link_hash_flags &= ~ (ELF_LINK_HASH_DEF_REGULAR
- | ELF_LINK_HASH_DEF_DYNAMIC);
-
- /* If H is the target of an indirection, we want the caller to
- use H rather than the indirect symbol. Otherwise if we are
- defining a new indirect symbol we will wind up attaching it
- to the entry we are overriding. */
- *sym_hash = h;
- }
-
- /* Handle the special case of a non-weak definition in a shared
- object followed by a weak definition in a regular object. In
- this case we prefer to definition in the shared object. To make
- this work we have to tell the caller to not treat the new symbol
- as a definition. */
- if (olddef
- && olddyn
- && h->root.type != bfd_link_hash_defweak
- && newdef
- && ! newdyn
- && bind == STB_WEAK)
- *override = true;
-
- return true;
-}
-
-/* This function is called to create an indirect symbol from the
- default for the symbol with the default version if needed. The
- symbol is described by H, NAME, SYM, SEC, VALUE, and OVERRIDE. We
- set DYNSYM if the new indirect symbol is dynamic. DT_NEEDED
- indicates if it comes from a DT_NEEDED entry of a shared object. */
-
-static boolean
-elf_add_default_symbol (abfd, info, h, name, sym, sec, value,
- dynsym, override, dt_needed)
- bfd *abfd;
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- const char *name;
- Elf_Internal_Sym *sym;
- asection **sec;
- bfd_vma *value;
- boolean *dynsym;
- boolean override;
- boolean dt_needed;
-{
- boolean type_change_ok;
- boolean size_change_ok;
- char *shortname;
- struct elf_link_hash_entry *hi;
- struct elf_backend_data *bed;
- boolean collect;
- boolean dynamic;
- char *p;
-
- /* If this symbol has a version, and it is the default version, we
- create an indirect symbol from the default name to the fully
- decorated name. This will cause external references which do not
- specify a version to be bound to this version of the symbol. */
- p = strchr (name, ELF_VER_CHR);
- if (p == NULL || p[1] != ELF_VER_CHR)
- return true;
-
- if (override)
- {
- /* We are overridden by an old defition. We need to check if we
- need to crreate the indirect symbol from the default name. */
- hi = elf_link_hash_lookup (elf_hash_table (info), name, true,
- false, false);
- BFD_ASSERT (hi != NULL);
- if (hi == h)
- return true;
- while (hi->root.type == bfd_link_hash_indirect
- || hi->root.type == bfd_link_hash_warning)
- {
- hi = (struct elf_link_hash_entry *) hi->root.u.i.link;
- if (hi == h)
- return true;
- }
- }
-
- bed = get_elf_backend_data (abfd);
- collect = bed->collect;
- dynamic = (abfd->flags & DYNAMIC) != 0;
-
- shortname = bfd_hash_allocate (&info->hash->table,
- (size_t) (p - name + 1));
- if (shortname == NULL)
- return false;
- strncpy (shortname, name, (size_t) (p - name));
- shortname [p - name] = '\0';
-
- /* We are going to create a new symbol. Merge it with any existing
- symbol with this name. For the purposes of the merge, act as
- though we were defining the symbol we just defined, although we
- actually going to define an indirect symbol. */
- type_change_ok = false;
- size_change_ok = false;
- if (! elf_merge_symbol (abfd, info, shortname, sym, sec, value,
- &hi, &override, &type_change_ok,
- &size_change_ok, dt_needed))
- return false;
-
- if (! override)
- {
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, shortname, BSF_INDIRECT, bfd_ind_section_ptr,
- (bfd_vma) 0, name, false, collect,
- (struct bfd_link_hash_entry **) &hi)))
- return false;
- }
- else
- {
- /* In this case the symbol named SHORTNAME is overriding the
- indirect symbol we want to add. We were planning on making
- SHORTNAME an indirect symbol referring to NAME. SHORTNAME
- is the name without a version. NAME is the fully versioned
- name, and it is the default version.
-
- Overriding means that we already saw a definition for the
- symbol SHORTNAME in a regular object, and it is overriding
- the symbol defined in the dynamic object.
-
- When this happens, we actually want to change NAME, the
- symbol we just added, to refer to SHORTNAME. This will cause
- references to NAME in the shared object to become references
- to SHORTNAME in the regular object. This is what we expect
- when we override a function in a shared object: that the
- references in the shared object will be mapped to the
- definition in the regular object. */
-
- while (hi->root.type == bfd_link_hash_indirect
- || hi->root.type == bfd_link_hash_warning)
- hi = (struct elf_link_hash_entry *) hi->root.u.i.link;
-
- h->root.type = bfd_link_hash_indirect;
- h->root.u.i.link = (struct bfd_link_hash_entry *) hi;
- if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)
- {
- h->elf_link_hash_flags &=~ ELF_LINK_HASH_DEF_DYNAMIC;
- hi->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC;
- if (hi->elf_link_hash_flags
- & (ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_DEF_REGULAR))
- {
- if (! _bfd_elf_link_record_dynamic_symbol (info, hi))
- return false;
- }
- }
-
- /* Now set HI to H, so that the following code will set the
- other fields correctly. */
- hi = h;
- }
-
- /* If there is a duplicate definition somewhere, then HI may not
- point to an indirect symbol. We will have reported an error to
- the user in that case. */
-
- if (hi->root.type == bfd_link_hash_indirect)
- {
- struct elf_link_hash_entry *ht;
-
- /* If the symbol became indirect, then we assume that we have
- not seen a definition before. */
- BFD_ASSERT ((hi->elf_link_hash_flags
- & (ELF_LINK_HASH_DEF_DYNAMIC
- | ELF_LINK_HASH_DEF_REGULAR)) == 0);
-
- ht = (struct elf_link_hash_entry *) hi->root.u.i.link;
- (*bed->elf_backend_copy_indirect_symbol) (ht, hi);
-
- /* See if the new flags lead us to realize that the symbol must
- be dynamic. */
- if (! *dynsym)
- {
- if (! dynamic)
- {
- if (info->shared
- || ((hi->elf_link_hash_flags
- & ELF_LINK_HASH_REF_DYNAMIC) != 0))
- *dynsym = true;
- }
- else
- {
- if ((hi->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0)
- *dynsym = true;
- }
- }
- }
-
- /* We also need to define an indirection from the nondefault version
- of the symbol. */
-
- shortname = bfd_hash_allocate (&info->hash->table, strlen (name));
- if (shortname == NULL)
- return false;
- strncpy (shortname, name, (size_t) (p - name));
- strcpy (shortname + (p - name), p + 1);
-
- /* Once again, merge with any existing symbol. */
- type_change_ok = false;
- size_change_ok = false;
- if (! elf_merge_symbol (abfd, info, shortname, sym, sec, value,
- &hi, &override, &type_change_ok,
- &size_change_ok, dt_needed))
- return false;
-
- if (override)
- {
- /* Here SHORTNAME is a versioned name, so we don't expect to see
- the type of override we do in the case above. */
- (*_bfd_error_handler)
- (_("%s: warning: unexpected redefinition of `%s'"),
- bfd_archive_filename (abfd), shortname);
- }
- else
- {
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, shortname, BSF_INDIRECT,
- bfd_ind_section_ptr, (bfd_vma) 0, name, false,
- collect, (struct bfd_link_hash_entry **) &hi)))
- return false;
-
- /* If there is a duplicate definition somewhere, then HI may not
- point to an indirect symbol. We will have reported an error
- to the user in that case. */
-
- if (hi->root.type == bfd_link_hash_indirect)
- {
- /* If the symbol became indirect, then we assume that we have
- not seen a definition before. */
- BFD_ASSERT ((hi->elf_link_hash_flags
- & (ELF_LINK_HASH_DEF_DYNAMIC
- | ELF_LINK_HASH_DEF_REGULAR)) == 0);
-
- (*bed->elf_backend_copy_indirect_symbol) (h, hi);
-
- /* See if the new flags lead us to realize that the symbol
- must be dynamic. */
- if (! *dynsym)
- {
- if (! dynamic)
- {
- if (info->shared
- || ((hi->elf_link_hash_flags
- & ELF_LINK_HASH_REF_DYNAMIC) != 0))
- *dynsym = true;
- }
- else
- {
- if ((hi->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0)
- *dynsym = true;
- }
- }
- }
- }
-
- return true;
+ return FALSE;
}
/* Add symbols from an ELF object file to the linker hash table. */
-static boolean
+static bfd_boolean
elf_link_add_object_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- boolean (*add_symbol_hook) PARAMS ((bfd *, struct bfd_link_info *,
- const Elf_Internal_Sym *,
- const char **, flagword *,
- asection **, bfd_vma *));
- boolean (*check_relocs) PARAMS ((bfd *, struct bfd_link_info *,
- asection *, const Elf_Internal_Rela *));
- boolean collect;
+ bfd_boolean (*add_symbol_hook)
+ PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
+ const char **, flagword *, asection **, bfd_vma *));
+ bfd_boolean (*check_relocs)
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
+ bfd_boolean collect;
Elf_Internal_Shdr *hdr;
- Elf_Internal_Shdr *shndx_hdr;
bfd_size_type symcount;
bfd_size_type extsymcount;
bfd_size_type extsymoff;
- Elf_External_Sym *buf = NULL;
- Elf_External_Sym_Shndx *shndx_buf = NULL;
- Elf_External_Sym_Shndx *shndx;
struct elf_link_hash_entry **sym_hash;
- boolean dynamic;
+ bfd_boolean dynamic;
Elf_External_Versym *extversym = NULL;
Elf_External_Versym *ever;
- Elf_External_Dyn *dynbuf = NULL;
struct elf_link_hash_entry *weaks;
- Elf_External_Sym *esym;
- Elf_External_Sym *esymend;
+ struct elf_link_hash_entry **nondeflt_vers = NULL;
+ bfd_size_type nondeflt_vers_cnt = 0;
+ Elf_Internal_Sym *isymbuf = NULL;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
struct elf_backend_data *bed;
- boolean dt_needed;
+ bfd_boolean dt_needed;
struct elf_link_hash_table * hash_table;
- file_ptr pos;
bfd_size_type amt;
hash_table = elf_hash_table (info);
collect = bed->collect;
if ((abfd->flags & DYNAMIC) == 0)
- dynamic = false;
+ dynamic = FALSE;
else
{
- dynamic = true;
+ dynamic = TRUE;
/* You can't use -r against a dynamic object. Also, there's no
hope of using a dynamic object which does not exactly match
the format of the output file. */
- if (info->relocateable || info->hash->creator != abfd->xvec)
+ if (info->relocatable || info->hash->creator != abfd->xvec)
{
bfd_set_error (bfd_error_invalid_operation);
goto error_return;
.gnu.warning.SYMBOL are treated as warning symbols for the given
symbol. This differs from .gnu.warning sections, which generate
warnings when they are included in an output file. */
- if (! info->shared)
+ if (info->executable)
{
asection *s;
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (hash_table, name,
- false, false, true);
+ FALSE, FALSE, TRUE);
/* FIXME: What about bfd_link_hash_common? */
if (h != NULL
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, BSF_WARNING, s, (bfd_vma) 0, msg,
- false, collect, (struct bfd_link_hash_entry **) NULL)))
+ FALSE, collect, (struct bfd_link_hash_entry **) NULL)))
goto error_return;
- if (! info->relocateable)
+ if (! info->relocatable)
{
/* Clobber the section size so that the warning does
not get copied into the output file. */
}
}
- /* If this is a dynamic object, we always link against the .dynsym
- symbol table, not the .symtab symbol table. The dynamic linker
- will only see the .dynsym symbol table, so there is no reason to
- look at .symtab for a dynamic object. */
-
- if (! dynamic || elf_dynsymtab (abfd) == 0)
+ dt_needed = FALSE;
+ if (! dynamic)
{
- hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ /* 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
+ && is_elf_hash_table (info)
+ && ! hash_table->dynamic_sections_created
+ && abfd->xvec == info->hash->creator)
+ {
+ if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
+ goto error_return;
+ }
}
+ else if (! is_elf_hash_table (info))
+ goto error_return;
else
{
- hdr = &elf_tdata (abfd)->dynsymtab_hdr;
- shndx_hdr = NULL;
- }
-
- if (dynamic)
- {
- /* Read in any version definitions. */
+ asection *s;
+ bfd_boolean add_needed;
+ const char *name;
+ bfd_size_type oldsize;
+ bfd_size_type strindex;
+ struct bfd_link_needed_list *rpath = NULL, *runpath = NULL;
- if (! _bfd_elf_slurp_version_tables (abfd))
+ /* ld --just-symbols and dynamic objects don't mix very well.
+ Test for --just-symbols by looking at info set up by
+ _bfd_elf_link_just_syms. */
+ if ((s = abfd->sections) != NULL
+ && s->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
goto error_return;
- /* Read in the symbol versions, but don't bother to convert them
- to internal format. */
- if (elf_dynversym (abfd) != 0)
- {
- Elf_Internal_Shdr *versymhdr;
-
- versymhdr = &elf_tdata (abfd)->dynversym_hdr;
- extversym = (Elf_External_Versym *) bfd_malloc (versymhdr->sh_size);
- if (extversym == NULL)
- goto error_return;
- amt = versymhdr->sh_size;
- if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0
- || bfd_bread ((PTR) extversym, amt, abfd) != amt)
- goto error_return;
- }
- }
-
- symcount = hdr->sh_size / sizeof (Elf_External_Sym);
-
- /* The sh_info field of the symtab header tells us where the
- external symbols start. We don't care about the local symbols at
- this point. */
- if (elf_bad_symtab (abfd))
- {
- extsymcount = symcount;
- extsymoff = 0;
- }
- else
- {
- extsymcount = symcount - hdr->sh_info;
- extsymoff = hdr->sh_info;
- }
-
- amt = extsymcount * sizeof (Elf_External_Sym);
- buf = (Elf_External_Sym *) bfd_malloc (amt);
- if (buf == NULL && extsymcount != 0)
- goto error_return;
-
- if (shndx_hdr != NULL && shndx_hdr->sh_size != 0)
- {
- amt = extsymcount * sizeof (Elf_External_Sym_Shndx);
- shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (shndx_buf == NULL && extsymcount != 0)
- goto error_return;
- }
-
- /* We store a pointer to the hash table entry for each external
- symbol. */
- amt = extsymcount * sizeof (struct elf_link_hash_entry *);
- sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt);
- if (sym_hash == NULL)
- goto error_return;
- elf_sym_hashes (abfd) = sym_hash;
-
- dt_needed = false;
-
- 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
- && is_elf_hash_table (info)
- && ! hash_table->dynamic_sections_created
- && abfd->xvec == info->hash->creator)
- {
- if (! elf_link_create_dynamic_sections (abfd, info))
- goto error_return;
- }
- }
- else if (! is_elf_hash_table (info))
- goto error_return;
- else
- {
- asection *s;
- boolean add_needed;
- const char *name;
- bfd_size_type oldsize;
- bfd_size_type strindex;
-
- /* Find the name to use in a DT_NEEDED entry that refers to this
- object. If the object has a DT_SONAME entry, we use it.
- Otherwise, if the generic linker stuck something in
- elf_dt_name, we use that. Otherwise, we just use the file
- name. If the generic linker put a null string into
- elf_dt_name, we don't make a DT_NEEDED entry at all, even if
- there is a DT_SONAME entry. */
- add_needed = true;
- name = bfd_get_filename (abfd);
- if (elf_dt_name (abfd) != NULL)
+ /* Find the name to use in a DT_NEEDED entry that refers to this
+ object. If the object has a DT_SONAME entry, we use it.
+ Otherwise, if the generic linker stuck something in
+ elf_dt_name, we use that. Otherwise, we just use the file
+ name. If the generic linker put a null string into
+ elf_dt_name, we don't make a DT_NEEDED entry at all, even if
+ there is a DT_SONAME entry. */
+ add_needed = TRUE;
+ name = bfd_get_filename (abfd);
+ if (elf_dt_name (abfd) != NULL)
{
name = elf_dt_name (abfd);
if (*name == '\0')
{
if (elf_dt_soname (abfd) != NULL)
- dt_needed = true;
+ dt_needed = TRUE;
- add_needed = false;
+ add_needed = FALSE;
}
}
s = bfd_get_section_by_name (abfd, ".dynamic");
if (s != NULL)
{
+ Elf_External_Dyn *dynbuf = NULL;
Elf_External_Dyn *extdyn;
Elf_External_Dyn *extdynend;
int elfsec;
unsigned long shlink;
- int rpath;
- int runpath;
dynbuf = (Elf_External_Dyn *) bfd_malloc (s->_raw_size);
if (dynbuf == NULL)
if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf,
(file_ptr) 0, s->_raw_size))
- goto error_return;
+ goto error_free_dyn;
elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
if (elfsec == -1)
- goto error_return;
+ goto error_free_dyn;
shlink = elf_elfsections (abfd)[elfsec]->sh_link;
- {
- /* The shared libraries distributed with hpux11 have a bogus
- sh_link field for the ".dynamic" section. This code detects
- when SHLINK refers to a section that is not a string table
- and tries to find the string table for the ".dynsym" section
- instead. */
- Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[shlink];
- if (shdr->sh_type != SHT_STRTAB)
- {
- asection *ds = bfd_get_section_by_name (abfd, ".dynsym");
- int elfdsec = _bfd_elf_section_from_bfd_section (abfd, ds);
- if (elfdsec == -1)
- goto error_return;
- shlink = elf_elfsections (abfd)[elfdsec]->sh_link;
- }
- }
-
extdyn = dynbuf;
extdynend = extdyn + s->_raw_size / sizeof (Elf_External_Dyn);
- rpath = 0;
- runpath = 0;
for (; extdyn < extdynend; extdyn++)
{
Elf_Internal_Dyn dyn;
unsigned int tagv = dyn.d_un.d_val;
name = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (name == NULL)
- goto error_return;
+ goto error_free_dyn;
}
if (dyn.d_tag == DT_NEEDED)
{
n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
- goto error_return;
- anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1);
+ goto error_free_dyn;
+ amt = strlen (fnm) + 1;
+ anm = bfd_alloc (abfd, amt);
if (anm == NULL)
- goto error_return;
- strcpy (anm, fnm);
+ goto error_free_dyn;
+ memcpy (anm, fnm, (size_t) amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
char *fnm, *anm;
unsigned int tagv = dyn.d_un.d_val;
- /* When we see DT_RPATH before DT_RUNPATH, we have
- to clear runpath. Do _NOT_ bfd_release, as that
- frees all more recently bfd_alloc'd blocks as
- well. */
- if (rpath && hash_table->runpath)
- hash_table->runpath = NULL;
-
amt = sizeof (struct bfd_link_needed_list);
n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
- goto error_return;
- anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1);
+ goto error_free_dyn;
+ amt = strlen (fnm) + 1;
+ anm = bfd_alloc (abfd, amt);
if (anm == NULL)
- goto error_return;
- strcpy (anm, fnm);
+ goto error_free_dyn;
+ memcpy (anm, fnm, (size_t) amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
- for (pn = & hash_table->runpath;
+ for (pn = & runpath;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = n;
- runpath = 1;
- rpath = 0;
}
/* Ignore DT_RPATH if we have seen DT_RUNPATH. */
if (!runpath && dyn.d_tag == DT_RPATH)
n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
- goto error_return;
- anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1);
+ goto error_free_dyn;
+ amt = strlen (fnm) + 1;
+ anm = bfd_alloc (abfd, amt);
if (anm == NULL)
- goto error_return;
- strcpy (anm, fnm);
+ {
+ error_free_dyn:
+ free (dynbuf);
+ goto error_return;
+ }
+ memcpy (anm, fnm, (size_t) amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
- for (pn = & hash_table->runpath;
+ for (pn = & rpath;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = n;
- rpath = 1;
}
}
free (dynbuf);
- dynbuf = NULL;
+ }
+
+ /* DT_RUNPATH overrides DT_RPATH. Do _NOT_ bfd_release, as that
+ frees all more recently bfd_alloc'd blocks as well. */
+ if (runpath)
+ rpath = runpath;
+
+ if (rpath)
+ {
+ struct bfd_link_needed_list **pn;
+ for (pn = & hash_table->runpath;
+ *pn != NULL;
+ pn = &(*pn)->next)
+ ;
+ *pn = rpath;
}
/* We do not want to include any of the sections in a dynamic
/* If this is the first dynamic object found in the link, create
the special sections required for dynamic linking. */
if (! hash_table->dynamic_sections_created)
- if (! elf_link_create_dynamic_sections (abfd, info))
+ if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
goto error_return;
if (add_needed)
{
/* Add a DT_NEEDED entry for this dynamic object. */
oldsize = _bfd_elf_strtab_size (hash_table->dynstr);
- strindex = _bfd_elf_strtab_add (hash_table->dynstr, name, false);
+ strindex = _bfd_elf_strtab_add (hash_table->dynstr, name, FALSE);
if (strindex == (bfd_size_type) -1)
goto error_return;
if (dyn.d_tag == DT_NEEDED
&& dyn.d_un.d_val == strindex)
{
- if (buf != NULL)
- free (buf);
- if (extversym != NULL)
- free (extversym);
_bfd_elf_strtab_delref (hash_table->dynstr, strindex);
- return true;
+ return TRUE;
}
}
}
elf_dt_name (abfd) = name;
}
- pos = hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym);
- amt = extsymcount * sizeof (Elf_External_Sym);
- if (bfd_seek (abfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) buf, amt, abfd) != amt)
- goto error_return;
+ /* If this is a dynamic object, we always link against the .dynsym
+ symbol table, not the .symtab symbol table. The dynamic linker
+ will only see the .dynsym symbol table, so there is no reason to
+ look at .symtab for a dynamic object. */
+
+ if (! dynamic || elf_dynsymtab (abfd) == 0)
+ hdr = &elf_tdata (abfd)->symtab_hdr;
+ else
+ hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+
+ /* The sh_info field of the symtab header tells us where the
+ external symbols start. We don't care about the local symbols at
+ this point. */
+ if (elf_bad_symtab (abfd))
+ {
+ extsymcount = symcount;
+ extsymoff = 0;
+ }
+ else
+ {
+ extsymcount = symcount - hdr->sh_info;
+ extsymoff = hdr->sh_info;
+ }
- if (shndx_hdr != NULL && shndx_hdr->sh_size != 0)
+ sym_hash = NULL;
+ if (extsymcount != 0)
{
- amt = extsymcount * sizeof (Elf_External_Sym_Shndx);
- pos = shndx_hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym_Shndx);
- if (bfd_seek (abfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
+ isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
goto error_return;
+
+ /* We store a pointer to the hash table entry for each external
+ symbol. */
+ amt = extsymcount * sizeof (struct elf_link_hash_entry *);
+ sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt);
+ if (sym_hash == NULL)
+ goto error_free_sym;
+ elf_sym_hashes (abfd) = sym_hash;
+ }
+
+ if (dynamic)
+ {
+ /* Read in any version definitions. */
+ if (! _bfd_elf_slurp_version_tables (abfd))
+ goto error_free_sym;
+
+ /* Read in the symbol versions, but don't bother to convert them
+ to internal format. */
+ if (elf_dynversym (abfd) != 0)
+ {
+ Elf_Internal_Shdr *versymhdr;
+
+ versymhdr = &elf_tdata (abfd)->dynversym_hdr;
+ extversym = (Elf_External_Versym *) bfd_malloc (versymhdr->sh_size);
+ if (extversym == NULL)
+ goto error_free_sym;
+ amt = versymhdr->sh_size;
+ if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread ((PTR) extversym, amt, abfd) != amt)
+ goto error_free_vers;
+ }
}
weaks = NULL;
ever = extversym != NULL ? extversym + extsymoff : NULL;
- esymend = buf + extsymcount;
- for (esym = buf, shndx = shndx_buf;
- esym < esymend;
- esym++, sym_hash++, ever = (ever != NULL ? ever + 1 : NULL),
- shndx = (shndx != NULL ? shndx + 1 : NULL))
+ for (isym = isymbuf, isymend = isymbuf + extsymcount;
+ isym < isymend;
+ isym++, sym_hash++, ever = (ever != NULL ? ever + 1 : NULL))
{
- Elf_Internal_Sym sym;
int bind;
bfd_vma value;
asection *sec;
flagword flags;
const char *name;
struct elf_link_hash_entry *h;
- boolean definition;
- boolean size_change_ok, type_change_ok;
- boolean new_weakdef;
+ bfd_boolean definition;
+ bfd_boolean size_change_ok;
+ bfd_boolean type_change_ok;
+ bfd_boolean new_weakdef;
+ bfd_boolean override;
unsigned int old_alignment;
- boolean override;
+ bfd *old_bfd;
- override = false;
-
- elf_swap_symbol_in (abfd, esym, shndx, &sym);
+ override = FALSE;
flags = BSF_NO_FLAGS;
sec = NULL;
- value = sym.st_value;
+ value = isym->st_value;
*sym_hash = NULL;
- bind = ELF_ST_BIND (sym.st_info);
+ bind = ELF_ST_BIND (isym->st_info);
if (bind == STB_LOCAL)
{
/* This should be impossible, since ELF requires that all
}
else if (bind == STB_GLOBAL)
{
- if (sym.st_shndx != SHN_UNDEF
- && sym.st_shndx != SHN_COMMON)
+ if (isym->st_shndx != SHN_UNDEF
+ && isym->st_shndx != SHN_COMMON)
flags = BSF_GLOBAL;
}
else if (bind == STB_WEAK)
/* Leave it up to the processor backend. */
}
- if (sym.st_shndx == SHN_UNDEF)
+ if (isym->st_shndx == SHN_UNDEF)
sec = bfd_und_section_ptr;
- else if (sym.st_shndx < SHN_LORESERVE || sym.st_shndx > SHN_HIRESERVE)
+ else if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
{
- sec = section_from_elf_index (abfd, sym.st_shndx);
+ sec = section_from_elf_index (abfd, isym->st_shndx);
if (sec == NULL)
sec = bfd_abs_section_ptr;
else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
value -= sec->vma;
}
- else if (sym.st_shndx == SHN_ABS)
+ else if (isym->st_shndx == SHN_ABS)
sec = bfd_abs_section_ptr;
- else if (sym.st_shndx == SHN_COMMON)
+ else if (isym->st_shndx == SHN_COMMON)
{
sec = bfd_com_section_ptr;
/* What ELF calls the size we call the value. What ELF
calls the value we call the alignment. */
- value = sym.st_size;
+ value = isym->st_size;
}
else
{
/* Leave it up to the processor backend. */
}
- name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name);
+ name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ isym->st_name);
if (name == (const char *) NULL)
- goto error_return;
+ goto error_free_vers;
+
+ if (isym->st_shndx == SHN_COMMON
+ && ELF_ST_TYPE (isym->st_info) == STT_TLS)
+ {
+ asection *tcomm = bfd_get_section_by_name (abfd, ".tcommon");
- if (add_symbol_hook)
+ if (tcomm == NULL)
+ {
+ tcomm = bfd_make_section (abfd, ".tcommon");
+ if (tcomm == NULL
+ || !bfd_set_section_flags (abfd, tcomm, (SEC_ALLOC
+ | SEC_IS_COMMON
+ | SEC_LINKER_CREATED
+ | SEC_THREAD_LOCAL)))
+ goto error_free_vers;
+ }
+ sec = tcomm;
+ }
+ else if (add_symbol_hook)
{
- if (! (*add_symbol_hook) (abfd, info, &sym, &name, &flags, &sec,
+ if (! (*add_symbol_hook) (abfd, info, isym, &name, &flags, &sec,
&value))
- goto error_return;
+ goto error_free_vers;
/* The hook function sets the name to NULL if this symbol
should be skipped for some reason. */
if (sec == (asection *) NULL)
{
bfd_set_error (bfd_error_bad_value);
- goto error_return;
+ goto error_free_vers;
}
if (bfd_is_und_section (sec)
|| bfd_is_com_section (sec))
- definition = false;
+ definition = FALSE;
else
- definition = true;
+ definition = TRUE;
- size_change_ok = false;
+ size_change_ok = FALSE;
type_change_ok = get_elf_backend_data (abfd)->type_change_ok;
old_alignment = 0;
+ old_bfd = NULL;
+
if (info->hash->creator->flavour == bfd_target_elf_flavour)
{
Elf_Internal_Versym iver;
unsigned int vernum = 0;
+ bfd_boolean skip;
if (ever != NULL)
{
|| (vernum > 1 && ! bfd_is_abs_section (sec)))
{
const char *verstr;
- unsigned int namelen;
- bfd_size_type newlen;
+ size_t namelen, verlen, newlen;
char *newname, *p;
- if (sym.st_shndx != SHN_UNDEF)
+ if (isym->st_shndx != SHN_UNDEF)
{
if (vernum > elf_tdata (abfd)->dynverdef_hdr.sh_info)
{
bfd_archive_filename (abfd), name, vernum,
elf_tdata (abfd)->dynverdef_hdr.sh_info);
bfd_set_error (bfd_error_bad_value);
- goto error_return;
+ goto error_free_vers;
}
else if (vernum > 1)
verstr =
(_("%s: %s: invalid needed version %d"),
bfd_archive_filename (abfd), name, vernum);
bfd_set_error (bfd_error_bad_value);
- goto error_return;
+ goto error_free_vers;
}
}
namelen = strlen (name);
- newlen = namelen + strlen (verstr) + 2;
- if ((iver.vs_vers & VERSYM_HIDDEN) == 0)
+ verlen = strlen (verstr);
+ newlen = namelen + verlen + 2;
+ if ((iver.vs_vers & VERSYM_HIDDEN) == 0
+ && isym->st_shndx != SHN_UNDEF)
++newlen;
- newname = (char *) bfd_alloc (abfd, newlen);
+ newname = (char *) bfd_alloc (abfd, (bfd_size_type) newlen);
if (newname == NULL)
- goto error_return;
- strcpy (newname, name);
+ goto error_free_vers;
+ memcpy (newname, name, namelen);
p = newname + namelen;
*p++ = ELF_VER_CHR;
/* If this is a defined non-hidden version symbol,
we add another @ to the name. This indicates the
default version of the symbol. */
if ((iver.vs_vers & VERSYM_HIDDEN) == 0
- && sym.st_shndx != SHN_UNDEF)
+ && isym->st_shndx != SHN_UNDEF)
*p++ = ELF_VER_CHR;
- strcpy (p, verstr);
+ memcpy (p, verstr, verlen + 1);
name = newname;
}
}
- if (! elf_merge_symbol (abfd, info, name, &sym, &sec, &value,
- sym_hash, &override, &type_change_ok,
- &size_change_ok, dt_needed))
- goto error_return;
+ if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec, &value,
+ sym_hash, &skip, &override,
+ &type_change_ok, &size_change_ok,
+ dt_needed))
+ goto error_free_vers;
+
+ if (skip)
+ continue;
if (override)
- definition = false;
+ definition = FALSE;
h = *sym_hash;
while (h->root.type == bfd_link_hash_indirect
that we don't reduce the alignment later on. We can't
check later, because _bfd_generic_link_add_one_symbol
will set a default for the alignment which we want to
- override. */
- if (h->root.type == bfd_link_hash_common)
- old_alignment = h->root.u.c.p->alignment_power;
+ override. We also remember the old bfd where the existing
+ definition comes from. */
+ switch (h->root.type)
+ {
+ default:
+ break;
+
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ old_bfd = h->root.u.def.section->owner;
+ break;
+
+ case bfd_link_hash_common:
+ old_bfd = h->root.u.c.p->section->owner;
+ old_alignment = h->root.u.c.p->alignment_power;
+ break;
+ }
if (elf_tdata (abfd)->verdef != NULL
&& ! override
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, flags, sec, value, (const char *) NULL,
- false, collect, (struct bfd_link_hash_entry **) sym_hash)))
- goto error_return;
+ FALSE, collect, (struct bfd_link_hash_entry **) sym_hash)))
+ goto error_free_vers;
h = *sym_hash;
while (h->root.type == bfd_link_hash_indirect
h = (struct elf_link_hash_entry *) h->root.u.i.link;
*sym_hash = h;
- new_weakdef = false;
+ new_weakdef = FALSE;
if (dynamic
&& definition
&& (flags & BSF_WEAK) != 0
- && ELF_ST_TYPE (sym.st_info) != STT_FUNC
+ && ELF_ST_TYPE (isym->st_info) != STT_FUNC
&& info->hash->creator->flavour == bfd_target_elf_flavour
&& h->weakdef == NULL)
{
h->weakdef = weaks;
weaks = h;
- new_weakdef = true;
+ new_weakdef = TRUE;
}
/* Set the alignment of a common symbol. */
- if (sym.st_shndx == SHN_COMMON
+ if (isym->st_shndx == SHN_COMMON
&& h->root.type == bfd_link_hash_common)
{
unsigned int align;
- align = bfd_log2 (sym.st_value);
+ align = bfd_log2 (isym->st_value);
if (align > old_alignment
/* Permit an alignment power of zero if an alignment of one
is specified and no other alignments have been specified. */
- || (sym.st_value == 1 && old_alignment == 0))
+ || (isym->st_value == 1 && old_alignment == 0))
h->root.u.c.p->alignment_power = align;
+ else
+ h->root.u.c.p->alignment_power = old_alignment;
}
if (info->hash->creator->flavour == bfd_target_elf_flavour)
{
int old_flags;
- boolean dynsym;
+ bfd_boolean dynsym;
int new_flag;
+ /* Check the alignment when a common symbol is involved. This
+ can change when a common symbol is overriden by a normal
+ definition or a common symbol is ignored due to the old
+ normal definition. We need to make sure the maximum
+ alignment is maintained. */
+ if ((old_alignment || isym->st_shndx == SHN_COMMON)
+ && h->root.type != bfd_link_hash_common)
+ {
+ unsigned int common_align;
+ unsigned int normal_align;
+ unsigned int symbol_align;
+ bfd *normal_bfd;
+ bfd *common_bfd;
+
+ symbol_align = ffs (h->root.u.def.value) - 1;
+ if ((h->root.u.def.section->owner->flags & DYNAMIC) == 0)
+ {
+ normal_align = h->root.u.def.section->alignment_power;
+ if (normal_align > symbol_align)
+ normal_align = symbol_align;
+ }
+ else
+ normal_align = symbol_align;
+
+ if (old_alignment)
+ {
+ common_align = old_alignment;
+ common_bfd = old_bfd;
+ normal_bfd = abfd;
+ }
+ else
+ {
+ common_align = bfd_log2 (isym->st_value);
+ common_bfd = abfd;
+ normal_bfd = old_bfd;
+ }
+
+ if (normal_align < common_align)
+ (*_bfd_error_handler)
+ (_("Warning: alignment %u of symbol `%s' in %s is smaller than %u in %s"),
+ 1 << normal_align,
+ name,
+ bfd_archive_filename (normal_bfd),
+ 1 << common_align,
+ bfd_archive_filename (common_bfd));
+ }
+
/* Remember the symbol size and type. */
- if (sym.st_size != 0
+ if (isym->st_size != 0
&& (definition || h->size == 0))
{
- if (h->size != 0 && h->size != sym.st_size && ! size_change_ok)
+ if (h->size != 0 && h->size != isym->st_size && ! size_change_ok)
(*_bfd_error_handler)
- (_("Warning: size of symbol `%s' changed from %lu to %lu in %s"),
- name, (unsigned long) h->size, (unsigned long) sym.st_size,
+ (_("Warning: size of symbol `%s' changed from %lu in %s to %lu in %s"),
+ name, (unsigned long) h->size,
+ bfd_archive_filename (old_bfd),
+ (unsigned long) isym->st_size,
bfd_archive_filename (abfd));
- h->size = sym.st_size;
+ h->size = isym->st_size;
}
/* If this is a common symbol, then we always want H->SIZE
if (h->root.type == bfd_link_hash_common)
h->size = h->root.u.c.size;
- if (ELF_ST_TYPE (sym.st_info) != STT_NOTYPE
+ if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE
&& (definition || h->type == STT_NOTYPE))
{
if (h->type != STT_NOTYPE
- && h->type != ELF_ST_TYPE (sym.st_info)
+ && h->type != ELF_ST_TYPE (isym->st_info)
&& ! type_change_ok)
(*_bfd_error_handler)
(_("Warning: type of symbol `%s' changed from %d to %d in %s"),
- name, h->type, ELF_ST_TYPE (sym.st_info),
+ name, h->type, ELF_ST_TYPE (isym->st_info),
bfd_archive_filename (abfd));
- h->type = ELF_ST_TYPE (sym.st_info);
+ h->type = ELF_ST_TYPE (isym->st_info);
}
- /* If st_other has a processor-specific meaning, specific code
- might be needed here. */
- if (sym.st_other != 0)
+ /* 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. */
+ if (isym->st_other != 0 && !dynamic)
{
+ unsigned char hvis, symvis, other, nvis;
+
+ /* Take the balance of OTHER from the definition. */
+ other = (definition ? isym->st_other : h->other);
+ other &= ~ ELF_ST_VISIBILITY (-1);
+
/* Combine visibilities, using the most constraining one. */
- unsigned char hvis = ELF_ST_VISIBILITY (h->other);
- unsigned char symvis = ELF_ST_VISIBILITY (sym.st_other);
-
- if (symvis && (hvis > symvis || hvis == 0))
- h->other = sym.st_other;
-
- /* If neither has visibility, use the st_other of the
- definition. This is an arbitrary choice, since the
- other bits have no general meaning. */
- if (!symvis && !hvis
- && (definition || h->other == 0))
- h->other = sym.st_other;
+ 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;
+
+ h->other = other | nvis;
}
/* Set a flag in the hash table entry indicating the type of
is one which is referenced or defined by both a regular
object and a shared object. */
old_flags = h->elf_link_hash_flags;
- dynsym = false;
+ dynsym = FALSE;
if (! dynamic)
{
if (! definition)
}
else
new_flag = ELF_LINK_HASH_DEF_REGULAR;
- if (info->shared
+ if (! info->executable
|| (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_DYNAMIC)) != 0)
- dynsym = true;
+ dynsym = TRUE;
}
else
{
|| (h->weakdef != NULL
&& ! new_weakdef
&& h->weakdef->dynindx != -1))
- dynsym = true;
+ dynsym = TRUE;
}
h->elf_link_hash_flags |= new_flag;
/* Check to see if we need to add an indirect symbol for
the default name. */
if (definition || h->root.type == bfd_link_hash_common)
- if (! elf_add_default_symbol (abfd, info, h, name, &sym,
- &sec, &value, &dynsym,
- override, dt_needed))
- goto error_return;
+ if (!_bfd_elf_add_default_symbol (abfd, info, h, name, isym,
+ &sec, &value, &dynsym,
+ override, dt_needed))
+ goto error_free_vers;
+
+ if (definition && !dynamic)
+ {
+ char *p = strchr (name, ELF_VER_CHR);
+ if (p != NULL && p[1] != ELF_VER_CHR)
+ {
+ /* Queue non-default versions so that .symver x, x@FOO
+ aliases can be checked. */
+ if (! nondeflt_vers)
+ {
+ amt = (isymend - isym + 1)
+ * sizeof (struct elf_link_hash_entry *);
+ nondeflt_vers = bfd_malloc (amt);
+ }
+ nondeflt_vers [nondeflt_vers_cnt++] = h;
+ }
+ }
if (dynsym && h->dynindx == -1)
{
if (! _bfd_elf_link_record_dynamic_symbol (info, h))
- goto error_return;
+ goto error_free_vers;
if (h->weakdef != NULL
&& ! new_weakdef
&& h->weakdef->dynindx == -1)
{
if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
- goto error_return;
+ goto error_free_vers;
}
}
else if (dynsym && h->dynindx != -1)
{
case STV_INTERNAL:
case STV_HIDDEN:
- (*bed->elf_backend_hide_symbol) (info, h, true);
+ (*bed->elf_backend_hide_symbol) (info, h, TRUE);
break;
}
bfd_size_type strindex;
if (! is_elf_hash_table (info))
- goto error_return;
+ goto error_free_vers;
/* The symbol from a DT_NEEDED object is referenced from
the regular object to create a dynamic executable. We
have to make sure there is a DT_NEEDED entry for it. */
- dt_needed = false;
+ dt_needed = FALSE;
oldsize = _bfd_elf_strtab_size (hash_table->dynstr);
strindex = _bfd_elf_strtab_add (hash_table->dynstr,
- elf_dt_soname (abfd), false);
+ elf_dt_soname (abfd), FALSE);
if (strindex == (bfd_size_type) -1)
- goto error_return;
+ goto error_free_vers;
if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr))
{
}
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_NEEDED, strindex))
- goto error_return;
+ goto error_free_vers;
+ }
+ }
+ }
+
+ /* Now that all the symbols from this input file are created, handle
+ .symver foo, foo@BAR such that any relocs against foo become foo@BAR. */
+ if (nondeflt_vers != NULL)
+ {
+ bfd_size_type cnt, symidx;
+
+ for (cnt = 0; cnt < nondeflt_vers_cnt; ++cnt)
+ {
+ struct elf_link_hash_entry *h = nondeflt_vers[cnt], *hi;
+ char *shortname, *p;
+
+ p = strchr (h->root.root.string, ELF_VER_CHR);
+ if (p == NULL
+ || (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak))
+ continue;
+
+ amt = p - h->root.root.string;
+ shortname = bfd_malloc (amt + 1);
+ memcpy (shortname, h->root.root.string, amt);
+ shortname[amt] = '\0';
+
+ hi = (struct elf_link_hash_entry *)
+ bfd_link_hash_lookup (info->hash, shortname,
+ FALSE, FALSE, FALSE);
+ if (hi != NULL
+ && hi->root.type == h->root.type
+ && hi->root.u.def.value == h->root.u.def.value
+ && hi->root.u.def.section == h->root.u.def.section)
+ {
+ (*bed->elf_backend_hide_symbol) (info, hi, TRUE);
+ hi->root.type = bfd_link_hash_indirect;
+ hi->root.u.i.link = (struct bfd_link_hash_entry *) h;
+ (*bed->elf_backend_copy_indirect_symbol) (bed, h, hi);
+ sym_hash = elf_sym_hashes (abfd);
+ if (sym_hash)
+ for (symidx = 0; symidx < extsymcount; ++symidx)
+ if (sym_hash[symidx] == hi)
+ {
+ sym_hash[symidx] = h;
+ break;
+ }
}
+ free (shortname);
}
+ free (nondeflt_vers);
+ nondeflt_vers = NULL;
+ }
+
+ if (extversym != NULL)
+ {
+ free (extversym);
+ extversym = NULL;
}
+ if (isymbuf != NULL)
+ free (isymbuf);
+ isymbuf = NULL;
+
/* Now set the weakdefs field correctly for all the weak defined
symbols we found. The only way to do this is to search all the
symbols. Since we only need the information for non functions in
if (! _bfd_elf_link_record_dynamic_symbol (info, hlook))
goto error_return;
}
-
break;
}
}
}
- if (buf != NULL)
- {
- free (buf);
- buf = NULL;
- }
-
- if (extversym != NULL)
- {
- free (extversym);
- extversym = NULL;
- }
-
/* If this object is the same format as the output object, and it is
not a shared library, then let the backend look through the
relocs.
for (o = abfd->sections; o != NULL; o = o->next)
{
Elf_Internal_Rela *internal_relocs;
- boolean ok;
+ bfd_boolean ok;
if ((o->flags & SEC_RELOC) == 0
|| o->reloc_count == 0
|| bfd_is_abs_section (o->output_section))
continue;
- internal_relocs = (NAME(_bfd_elf,link_read_relocs)
- (abfd, o, (PTR) NULL,
- (Elf_Internal_Rela *) NULL,
- info->keep_memory));
+ internal_relocs
+ = _bfd_elf_link_read_relocs (abfd, o, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
if (internal_relocs == NULL)
goto error_return;
ok = (*check_relocs) (abfd, info, o, internal_relocs);
- if (! info->keep_memory)
+ if (elf_section_data (o)->relocs != internal_relocs)
free (internal_relocs);
if (! ok)
}
}
- /* If this is a non-traditional, non-relocateable link, try to
- optimize the handling of the .stab/.stabstr sections. */
+ /* If this is a non-traditional link, try to optimize the handling
+ of the .stab/.stabstr sections. */
if (! dynamic
- && ! info->relocateable
&& ! info->traditional_format
&& info->hash->creator->flavour == bfd_target_elf_flavour
&& is_elf_hash_table (info)
asection *stab, *stabstr;
stab = bfd_get_section_by_name (abfd, ".stab");
- if (stab != NULL && !(stab->flags & SEC_MERGE))
+ if (stab != NULL
+ && (stab->flags & SEC_MERGE) == 0
+ && !bfd_is_abs_section (stab->output_section))
{
stabstr = bfd_get_section_by_name (abfd, ".stabstr");
&secdata->sec_info))
goto error_return;
if (secdata->sec_info)
- secdata->sec_info_type = ELF_INFO_TYPE_STABS;
+ stab->sec_info_type = ELF_INFO_TYPE_STABS;
}
}
}
- if (! info->relocateable && ! dynamic
+ if (! info->relocatable && ! dynamic
&& is_elf_hash_table (info))
{
asection *s;
for (s = abfd->sections; s != NULL; s = s->next)
- if (s->flags & SEC_MERGE)
+ if ((s->flags & SEC_MERGE) != 0
+ && !bfd_is_abs_section (s->output_section))
{
struct bfd_elf_section_data *secdata;
s, &secdata->sec_info))
goto error_return;
else if (secdata->sec_info)
- secdata->sec_info_type = ELF_INFO_TYPE_MERGE;
+ s->sec_info_type = ELF_INFO_TYPE_MERGE;
}
}
- return true;
+ if (is_elf_hash_table (info))
+ {
+ /* Add this bfd to the loaded list. */
+ struct elf_link_loaded_list *n;
- error_return:
- if (buf != NULL)
- free (buf);
- if (dynbuf != NULL)
- free (dynbuf);
+ n = ((struct elf_link_loaded_list *)
+ bfd_alloc (abfd, sizeof (struct elf_link_loaded_list)));
+ if (n == NULL)
+ goto error_return;
+ n->abfd = abfd;
+ n->next = hash_table->loaded;
+ hash_table->loaded = n;
+ }
+
+ return TRUE;
+
+ error_free_vers:
+ if (nondeflt_vers != NULL)
+ free (nondeflt_vers);
if (extversym != NULL)
free (extversym);
- return false;
+ error_free_sym:
+ if (isymbuf != NULL)
+ free (isymbuf);
+ error_return:
+ return FALSE;
}
-/* Create some sections which will be filled in with dynamic linking
- information. ABFD is an input file which requires dynamic sections
- to be created. The dynamic sections take up virtual memory space
- when the final executable is run, so we need to create them before
- addresses are assigned to the output sections. We work out the
- actual contents and size of these sections later. */
+/* Add an entry to the .dynamic table. */
-boolean
-elf_link_create_dynamic_sections (abfd, info)
- bfd *abfd;
+bfd_boolean
+elf_add_dynamic_entry (info, tag, val)
struct bfd_link_info *info;
+ bfd_vma tag;
+ bfd_vma val;
{
- flagword flags;
- register asection *s;
- struct elf_link_hash_entry *h;
- struct elf_backend_data *bed;
+ Elf_Internal_Dyn dyn;
+ bfd *dynobj;
+ asection *s;
+ bfd_size_type newsize;
+ bfd_byte *newcontents;
if (! is_elf_hash_table (info))
- return false;
+ return FALSE;
- if (elf_hash_table (info)->dynamic_sections_created)
- return true;
+ dynobj = elf_hash_table (info)->dynobj;
- /* Make sure that all dynamic sections use the same input BFD. */
- if (elf_hash_table (info)->dynobj == NULL)
- elf_hash_table (info)->dynobj = abfd;
- else
- abfd = elf_hash_table (info)->dynobj;
+ s = bfd_get_section_by_name (dynobj, ".dynamic");
+ BFD_ASSERT (s != NULL);
- /* Note that we set the SEC_IN_MEMORY flag for all of these
- sections. */
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
-
- /* A dynamically linked executable has a .interp section, but a
- shared library does not. */
- if (! info->shared)
- {
- s = bfd_make_section (abfd, ".interp");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
- return false;
- }
-
- if (! info->traditional_format
- && info->hash->creator->flavour == bfd_target_elf_flavour)
- {
- s = bfd_make_section (abfd, ".eh_frame_hdr");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, 2))
- return false;
- }
-
- /* Create sections to hold version informations. These are removed
- if they are not needed. */
- s = bfd_make_section (abfd, ".gnu.version_d");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
- return false;
-
- s = bfd_make_section (abfd, ".gnu.version");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, 1))
- return false;
-
- s = bfd_make_section (abfd, ".gnu.version_r");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
- return false;
-
- s = bfd_make_section (abfd, ".dynsym");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
- return false;
-
- s = bfd_make_section (abfd, ".dynstr");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
- return false;
-
- /* Create a strtab to hold the dynamic symbol names. */
- if (elf_hash_table (info)->dynstr == NULL)
- {
- elf_hash_table (info)->dynstr = _bfd_elf_strtab_init ();
- if (elf_hash_table (info)->dynstr == NULL)
- return false;
- }
-
- s = bfd_make_section (abfd, ".dynamic");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags)
- || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
- return false;
-
- /* The special symbol _DYNAMIC is always set to the start of the
- .dynamic section. This call occurs before we have processed the
- symbols for any dynamic object, so we don't have to worry about
- overriding a dynamic definition. We could set _DYNAMIC in a
- linker script, but we only want to define it if we are, in fact,
- creating a .dynamic section. We don't want to define it if there
- is no .dynamic section, since on some ELF platforms the start up
- code examines it to decide how to initialize the process. */
- h = NULL;
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, "_DYNAMIC", BSF_GLOBAL, s, (bfd_vma) 0,
- (const char *) NULL, false, get_elf_backend_data (abfd)->collect,
- (struct bfd_link_hash_entry **) &h)))
- return false;
- h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
- h->type = STT_OBJECT;
-
- if (info->shared
- && ! _bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
-
- bed = get_elf_backend_data (abfd);
-
- s = bfd_make_section (abfd, ".hash");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
- return false;
- elf_section_data (s)->this_hdr.sh_entsize = bed->s->sizeof_hash_entry;
-
- /* Let the backend create the rest of the sections. This lets the
- backend set the right flags. The backend will normally create
- the .got and .plt sections. */
- if (! (*bed->elf_backend_create_dynamic_sections) (abfd, info))
- return false;
-
- elf_hash_table (info)->dynamic_sections_created = true;
-
- return true;
-}
-
-/* Add an entry to the .dynamic table. */
-
-boolean
-elf_add_dynamic_entry (info, tag, val)
- struct bfd_link_info *info;
- bfd_vma tag;
- bfd_vma val;
-{
- Elf_Internal_Dyn dyn;
- bfd *dynobj;
- asection *s;
- bfd_size_type newsize;
- bfd_byte *newcontents;
-
- if (! is_elf_hash_table (info))
- return false;
-
- dynobj = elf_hash_table (info)->dynobj;
-
- s = bfd_get_section_by_name (dynobj, ".dynamic");
- BFD_ASSERT (s != NULL);
-
- newsize = s->_raw_size + sizeof (Elf_External_Dyn);
- newcontents = (bfd_byte *) bfd_realloc (s->contents, newsize);
- if (newcontents == NULL)
- return false;
+ newsize = s->_raw_size + sizeof (Elf_External_Dyn);
+ newcontents = (bfd_byte *) bfd_realloc (s->contents, newsize);
+ if (newcontents == NULL)
+ return FALSE;
dyn.d_tag = tag;
dyn.d_un.d_val = val;
s->_raw_size = newsize;
s->contents = newcontents;
- return true;
-}
-
-/* Record a new local dynamic symbol. */
-
-boolean
-elf_link_record_local_dynamic_symbol (info, input_bfd, input_indx)
- struct bfd_link_info *info;
- bfd *input_bfd;
- long input_indx;
-{
- struct elf_link_local_dynamic_entry *entry;
- struct elf_link_hash_table *eht;
- struct elf_strtab_hash *dynstr;
- Elf_External_Sym esym;
- Elf_External_Sym_Shndx eshndx;
- Elf_External_Sym_Shndx *shndx;
- unsigned long dynstr_index;
- char *name;
- file_ptr pos;
- bfd_size_type amt;
-
- if (! is_elf_hash_table (info))
- return false;
-
- /* See if the entry exists already. */
- for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
- if (entry->input_bfd == input_bfd && entry->input_indx == input_indx)
- return true;
-
- entry = (struct elf_link_local_dynamic_entry *)
- bfd_alloc (input_bfd, (bfd_size_type) sizeof (*entry));
- if (entry == NULL)
- return false;
-
- /* Go find the symbol, so that we can find it's name. */
- amt = sizeof (Elf_External_Sym);
- pos = elf_tdata (input_bfd)->symtab_hdr.sh_offset + input_indx * amt;
- if (bfd_seek (input_bfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) &esym, amt, input_bfd) != amt)
- return false;
- shndx = NULL;
- if (elf_tdata (input_bfd)->symtab_shndx_hdr.sh_size != 0)
- {
- amt = sizeof (Elf_External_Sym_Shndx);
- pos = elf_tdata (input_bfd)->symtab_shndx_hdr.sh_offset;
- pos += input_indx * amt;
- shndx = &eshndx;
- if (bfd_seek (input_bfd, pos, SEEK_SET) != 0
- || bfd_bread ((PTR) shndx, amt, input_bfd) != amt)
- return false;
- }
- elf_swap_symbol_in (input_bfd, &esym, shndx, &entry->isym);
-
- name = (bfd_elf_string_from_elf_section
- (input_bfd, elf_tdata (input_bfd)->symtab_hdr.sh_link,
- entry->isym.st_name));
-
- dynstr = elf_hash_table (info)->dynstr;
- if (dynstr == NULL)
- {
- /* Create a strtab to hold the dynamic symbol names. */
- elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
- if (dynstr == NULL)
- return false;
- }
-
- dynstr_index = _bfd_elf_strtab_add (dynstr, name, false);
- if (dynstr_index == (unsigned long) -1)
- return false;
- entry->isym.st_name = dynstr_index;
-
- eht = elf_hash_table (info);
-
- entry->next = eht->dynlocal;
- eht->dynlocal = entry;
- entry->input_bfd = input_bfd;
- entry->input_indx = input_indx;
- eht->dynsymcount++;
-
- /* Whatever binding the symbol had before, it's now local. */
- entry->isym.st_info
- = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info));
-
- /* The dynindx will be set at the end of size_dynamic_sections. */
-
- return true;
+ return TRUE;
}
\f
-/* Read and swap the relocs from the section indicated by SHDR. This
- may be either a REL or a RELA section. The relocations are
- translated into RELA relocations and stored in INTERNAL_RELOCS,
- which should have already been allocated to contain enough space.
- The EXTERNAL_RELOCS are a buffer where the external form of the
- relocations should be stored.
-
- Returns false if something goes wrong. */
-
-static boolean
-elf_link_read_relocs_from_section (abfd, shdr, external_relocs,
- internal_relocs)
- bfd *abfd;
- Elf_Internal_Shdr *shdr;
- PTR external_relocs;
- Elf_Internal_Rela *internal_relocs;
-{
- struct elf_backend_data *bed;
- bfd_size_type amt;
-
- /* If there aren't any relocations, that's OK. */
- if (!shdr)
- return true;
-
- /* Position ourselves at the start of the section. */
- if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0)
- return false;
-
- /* Read the relocations. */
- if (bfd_bread (external_relocs, shdr->sh_size, abfd) != shdr->sh_size)
- return false;
-
- bed = get_elf_backend_data (abfd);
-
- /* Convert the external relocations to the internal format. */
- if (shdr->sh_entsize == sizeof (Elf_External_Rel))
- {
- Elf_External_Rel *erel;
- Elf_External_Rel *erelend;
- Elf_Internal_Rela *irela;
- Elf_Internal_Rel *irel;
-
- erel = (Elf_External_Rel *) external_relocs;
- erelend = erel + NUM_SHDR_ENTRIES (shdr);
- irela = internal_relocs;
- amt = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel);
- irel = bfd_alloc (abfd, amt);
- for (; erel < erelend; erel++, irela += bed->s->int_rels_per_ext_rel)
- {
- unsigned int i;
-
- if (bed->s->swap_reloc_in)
- (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, irel);
- else
- elf_swap_reloc_in (abfd, erel, irel);
-
- for (i = 0; i < bed->s->int_rels_per_ext_rel; ++i)
- {
- irela[i].r_offset = irel[i].r_offset;
- irela[i].r_info = irel[i].r_info;
- irela[i].r_addend = 0;
- }
- }
- }
- else
- {
- Elf_External_Rela *erela;
- Elf_External_Rela *erelaend;
- Elf_Internal_Rela *irela;
-
- BFD_ASSERT (shdr->sh_entsize == sizeof (Elf_External_Rela));
-
- erela = (Elf_External_Rela *) external_relocs;
- erelaend = erela + NUM_SHDR_ENTRIES (shdr);
- irela = internal_relocs;
- for (; erela < erelaend; erela++, irela += bed->s->int_rels_per_ext_rel)
- {
- if (bed->s->swap_reloca_in)
- (*bed->s->swap_reloca_in) (abfd, (bfd_byte *) erela, irela);
- else
- elf_swap_reloca_in (abfd, erela, irela);
- }
- }
-
- return true;
-}
-
-/* Read and swap the relocs for a section O. They may have been
- cached. If the EXTERNAL_RELOCS and INTERNAL_RELOCS arguments are
- not NULL, they are used as buffers to read into. They are known to
- be large enough. If the INTERNAL_RELOCS relocs argument is NULL,
- the return value is allocated using either malloc or bfd_alloc,
- according to the KEEP_MEMORY argument. If O has two relocation
- sections (both REL and RELA relocations), then the REL_HDR
- relocations will appear first in INTERNAL_RELOCS, followed by the
- REL_HDR2 relocations. */
-
-Elf_Internal_Rela *
-NAME(_bfd_elf,link_read_relocs) (abfd, o, external_relocs, internal_relocs,
- keep_memory)
- bfd *abfd;
- asection *o;
- PTR external_relocs;
- Elf_Internal_Rela *internal_relocs;
- boolean keep_memory;
-{
- Elf_Internal_Shdr *rel_hdr;
- PTR alloc1 = NULL;
- Elf_Internal_Rela *alloc2 = NULL;
- struct elf_backend_data *bed = get_elf_backend_data (abfd);
-
- if (elf_section_data (o)->relocs != NULL)
- return elf_section_data (o)->relocs;
-
- if (o->reloc_count == 0)
- return NULL;
-
- rel_hdr = &elf_section_data (o)->rel_hdr;
-
- if (internal_relocs == NULL)
- {
- bfd_size_type size;
-
- size = o->reloc_count;
- size *= bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela);
- if (keep_memory)
- internal_relocs = (Elf_Internal_Rela *) bfd_alloc (abfd, size);
- else
- internal_relocs = alloc2 = (Elf_Internal_Rela *) bfd_malloc (size);
- if (internal_relocs == NULL)
- goto error_return;
- }
-
- if (external_relocs == NULL)
- {
- bfd_size_type size = rel_hdr->sh_size;
-
- if (elf_section_data (o)->rel_hdr2)
- size += elf_section_data (o)->rel_hdr2->sh_size;
- alloc1 = (PTR) bfd_malloc (size);
- if (alloc1 == NULL)
- goto error_return;
- external_relocs = alloc1;
- }
-
- if (!elf_link_read_relocs_from_section (abfd, rel_hdr,
- external_relocs,
- internal_relocs))
- goto error_return;
- if (!elf_link_read_relocs_from_section
- (abfd,
- elf_section_data (o)->rel_hdr2,
- ((bfd_byte *) external_relocs) + rel_hdr->sh_size,
- internal_relocs + (NUM_SHDR_ENTRIES (rel_hdr)
- * bed->s->int_rels_per_ext_rel)))
- goto error_return;
-
- /* Cache the results for next time, if we can. */
- if (keep_memory)
- elf_section_data (o)->relocs = internal_relocs;
-
- if (alloc1 != NULL)
- free (alloc1);
-
- /* Don't free alloc2, since if it was allocated we are passing it
- back (under the name of internal_relocs). */
-
- return internal_relocs;
-
- error_return:
- if (alloc1 != NULL)
- free (alloc1);
- if (alloc2 != NULL)
- free (alloc2);
- return NULL;
-}
-\f
-/* Record an assignment to a symbol made by a linker script. We need
- this in case some dynamic object refers to this symbol. */
-
-boolean
-NAME(bfd_elf,record_link_assignment) (output_bfd, info, name, provide)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
- const char *name;
- boolean provide;
-{
- struct elf_link_hash_entry *h;
-
- if (info->hash->creator->flavour != bfd_target_elf_flavour)
- return true;
-
- h = elf_link_hash_lookup (elf_hash_table (info), name, true, true, false);
- if (h == NULL)
- return false;
-
- if (h->root.type == bfd_link_hash_new)
- h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
-
- /* If this symbol is being provided by the linker script, and it is
- currently defined by a dynamic object, but not by a regular
- object, then mark it as undefined so that the generic linker will
- force the correct value. */
- if (provide
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- h->root.type = bfd_link_hash_undefined;
-
- /* If this symbol is not being provided by the linker script, and it is
- currently defined by a dynamic object, but not by a regular object,
- then clear out any version information because the symbol will not be
- associated with the dynamic object any more. */
- if (!provide
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- h->verinfo.verdef = NULL;
-
- h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
-
- /* When possible, keep the original type of the symbol. */
- if (h->type == STT_NOTYPE)
- h->type = STT_OBJECT;
-
- if (((h->elf_link_hash_flags & (ELF_LINK_HASH_DEF_DYNAMIC
- | ELF_LINK_HASH_REF_DYNAMIC)) != 0
- || info->shared)
- && h->dynindx == -1)
- {
- if (! _bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
-
- /* If this is a weak defined symbol, and we know a corresponding
- real symbol from the same dynamic object, make sure the real
- symbol is also made into a dynamic symbol. */
- if (h->weakdef != NULL
- && h->weakdef->dynindx == -1)
- {
- if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
- return false;
- }
- }
-
- return true;
-}
-\f
-/* This structure is used to pass information to
- elf_link_assign_sym_version. */
-
-struct elf_assign_sym_version_info
-{
- /* Output BFD. */
- bfd *output_bfd;
- /* General link information. */
- struct bfd_link_info *info;
- /* Version tree. */
- struct bfd_elf_version_tree *verdefs;
- /* Whether we had a failure. */
- boolean failed;
-};
-
-/* This structure is used to pass information to
- elf_link_find_version_dependencies. */
-
-struct elf_find_verdep_info
-{
- /* Output BFD. */
- bfd *output_bfd;
- /* General link information. */
- struct bfd_link_info *info;
- /* The number of dependencies. */
- unsigned int vers;
- /* Whether we had a failure. */
- boolean failed;
-};
-
/* Array used to determine the number of hash table buckets to use
based on the number of symbols there are. If there are fewer than
3 symbols we use 1 bucket, fewer than 17 symbols we use 3 buckets,
elf_link_hash_traverse (elf_hash_table (info),
elf_collect_hash_codes, &hashcodesp);
-/* We have a problem here. The following code to optimize the table
- size requires an integer type with more the 32 bits. If
- BFD_HOST_U_64_BIT is set we know about such a type. */
+ /* We have a problem here. The following code to optimize the table
+ size requires an integer type with more the 32 bits. If
+ BFD_HOST_U_64_BIT is set we know about such a type. */
#ifdef BFD_HOST_U_64_BIT
- if (info->optimize == true)
+ if (info->optimize)
{
unsigned long int nsyms = hashcodesp - hashcodes;
size_t minsize;
must set the sizes of the sections before the linker sets the
addresses of the various sections. */
-boolean
+bfd_boolean
NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
filter_shlib,
auxiliary_filters, info, sinterpptr,
soname_indx = (bfd_size_type) -1;
if (info->hash->creator->flavour != bfd_target_elf_flavour)
- return true;
+ return TRUE;
if (! is_elf_hash_table (info))
- return false;
+ return TRUE;
+
+ if (info->execstack)
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
+ else if (info->noexecstack)
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W;
+ else
+ {
+ bfd *inputobj;
+ asection *notesec = NULL;
+ int exec = 0;
+
+ for (inputobj = info->input_bfds;
+ inputobj;
+ inputobj = inputobj->link_next)
+ {
+ asection *s;
+
+ if (inputobj->flags & DYNAMIC)
+ continue;
+ s = bfd_get_section_by_name (inputobj, ".note.GNU-stack");
+ if (s)
+ {
+ if (s->flags & SEC_CODE)
+ exec = PF_X;
+ notesec = s;
+ }
+ else
+ exec = PF_X;
+ }
+ if (notesec)
+ {
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | exec;
+ if (exec && info->relocatable
+ && notesec->output_section != bfd_abs_section_ptr)
+ notesec->output_section->flags |= SEC_CODE;
+ }
+ }
/* Any syms created from now on start with -1 in
got.refcount/offset and plt.refcount/offset. */
- elf_hash_table (info)->init_refcount = -1;
+ elf_hash_table (info)->init_refcount = elf_hash_table (info)->init_offset;
/* The backend may have to create some sections regardless of whether
we're dynamic or not. */
bed = get_elf_backend_data (output_bfd);
if (bed->elf_backend_always_size_sections
&& ! (*bed->elf_backend_always_size_sections) (output_bfd, info))
- return false;
+ return FALSE;
dynobj = elf_hash_table (info)->dynobj;
/* If there were no dynamic objects in the link, there is nothing to
do here. */
if (dynobj == NULL)
- return true;
+ return TRUE;
if (! _bfd_elf_maybe_strip_eh_frame_hdr (info))
- return false;
+ return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
{
struct elf_info_failed eif;
struct elf_link_hash_entry *h;
asection *dynstr;
+ struct bfd_elf_version_tree *t;
+ struct bfd_elf_version_expr *d;
+ bfd_boolean all_defined;
*sinterpptr = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (*sinterpptr != NULL || info->shared);
if (soname != NULL)
{
soname_indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
- soname, true);
+ soname, TRUE);
if (soname_indx == (bfd_size_type) -1
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_SONAME,
soname_indx))
- return false;
+ return FALSE;
}
if (info->symbolic)
{
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_SYMBOLIC,
(bfd_vma) 0))
- return false;
+ return FALSE;
info->flags |= DF_SYMBOLIC;
}
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, rpath,
- true);
+ TRUE);
if (info->new_dtags)
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, indx);
if (indx == (bfd_size_type) -1
|| (info->new_dtags
&& ! elf_add_dynamic_entry (info, (bfd_vma) DT_RUNPATH,
indx)))
- return false;
+ return FALSE;
}
if (filter_shlib != NULL)
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
- filter_shlib, true);
+ filter_shlib, TRUE);
if (indx == (bfd_size_type) -1
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_FILTER, indx))
- return false;
+ return FALSE;
}
if (auxiliary_filters != NULL)
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
- *p, true);
+ *p, TRUE);
if (indx == (bfd_size_type) -1
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_AUXILIARY,
indx))
- return false;
+ return FALSE;
}
}
eif.info = info;
eif.verdefs = verdefs;
- eif.failed = false;
+ eif.failed = FALSE;
/* If we are supposed to export all symbols into the dynamic symbol
table (this is not the normal case), then do so. */
if (info->export_dynamic)
{
- elf_link_hash_traverse (elf_hash_table (info), elf_export_symbol,
+ elf_link_hash_traverse (elf_hash_table (info),
+ _bfd_elf_export_symbol,
(PTR) &eif);
if (eif.failed)
- return false;
+ return FALSE;
}
+ /* Make all global versions with definiton. */
+ for (t = verdefs; t != NULL; t = t->next)
+ for (d = t->globals; d != NULL; d = d->next)
+ if (!d->symver && strchr (d->pattern, '*') == NULL)
+ {
+ const char *verstr, *name;
+ size_t namelen, verlen, newlen;
+ char *newname, *p;
+ struct elf_link_hash_entry *newh;
+
+ name = d->pattern;
+ namelen = strlen (name);
+ verstr = t->name;
+ verlen = strlen (verstr);
+ newlen = namelen + verlen + 3;
+
+ newname = (char *) bfd_malloc ((bfd_size_type) newlen);
+ if (newname == NULL)
+ return FALSE;
+ memcpy (newname, name, namelen);
+
+ /* Check the hidden versioned definition. */
+ p = newname + namelen;
+ *p++ = ELF_VER_CHR;
+ memcpy (p, verstr, verlen + 1);
+ newh = elf_link_hash_lookup (elf_hash_table (info),
+ newname, FALSE, FALSE,
+ FALSE);
+ if (newh == NULL
+ || (newh->root.type != bfd_link_hash_defined
+ && newh->root.type != bfd_link_hash_defweak))
+ {
+ /* Check the default versioned definition. */
+ *p++ = ELF_VER_CHR;
+ memcpy (p, verstr, verlen + 1);
+ newh = elf_link_hash_lookup (elf_hash_table (info),
+ newname, FALSE, FALSE,
+ FALSE);
+ }
+ free (newname);
+
+ /* Mark this version if there is a definition and it is
+ not defined in a shared object. */
+ if (newh != NULL
+ && ((newh->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) == 0)
+ && (newh->root.type == bfd_link_hash_defined
+ || newh->root.type == bfd_link_hash_defweak))
+ d->symver = 1;
+ }
+
/* Attach all the symbols to their version information. */
asvinfo.output_bfd = output_bfd;
asvinfo.info = info;
asvinfo.verdefs = verdefs;
- asvinfo.failed = false;
+ asvinfo.failed = FALSE;
elf_link_hash_traverse (elf_hash_table (info),
- elf_link_assign_sym_version,
+ _bfd_elf_link_assign_sym_version,
(PTR) &asvinfo);
if (asvinfo.failed)
- return false;
+ return FALSE;
+
+ if (!info->allow_undefined_version)
+ {
+ /* Check if all global versions have a definiton. */
+ all_defined = TRUE;
+ for (t = verdefs; t != NULL; t = t->next)
+ for (d = t->globals; d != NULL; d = d->next)
+ if (!d->symver && !d->script
+ && strchr (d->pattern, '*') == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: undefined version: %s"),
+ d->pattern, t->name);
+ all_defined = FALSE;
+ }
+
+ if (!all_defined)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ }
/* Find all symbols which were defined in a dynamic object and make
the backend pick a reasonable value for them. */
elf_link_hash_traverse (elf_hash_table (info),
- elf_adjust_dynamic_symbol,
+ _bfd_elf_adjust_dynamic_symbol,
(PTR) &eif);
if (eif.failed)
- return false;
+ return FALSE;
/* Add some entries to the .dynamic section. We fill in some of the
values later, in elf_bfd_final_link, but we must add the entries
call then add the corresponding DT_INIT/DT_FINI entries. */
h = (info->init_function
? elf_link_hash_lookup (elf_hash_table (info),
- info->init_function, false,
- false, false)
+ info->init_function, FALSE,
+ FALSE, FALSE)
: NULL);
if (h != NULL
&& (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
| ELF_LINK_HASH_DEF_REGULAR)) != 0)
{
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_INIT, (bfd_vma) 0))
- return false;
+ return FALSE;
}
h = (info->fini_function
? elf_link_hash_lookup (elf_hash_table (info),
- info->fini_function, false,
- false, false)
+ info->fini_function, FALSE,
+ FALSE, FALSE)
: NULL);
if (h != NULL
&& (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
| ELF_LINK_HASH_DEF_REGULAR)) != 0)
{
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FINI, (bfd_vma) 0))
- return false;
+ return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".preinit_array") != NULL)
{
/* DT_PREINIT_ARRAY is not allowed in shared library. */
- if (info->shared)
+ if (! info->executable)
{
bfd *sub;
asection *o;
{
(*_bfd_error_handler)
(_("%s: .preinit_array section is not allowed in DSO"),
- bfd_archive_filename (sub));
+ bfd_archive_filename (sub));
break;
}
- return false;
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
}
if (!elf_add_dynamic_entry (info, (bfd_vma) DT_PREINIT_ARRAY,
(bfd_vma) 0)
|| !elf_add_dynamic_entry (info, (bfd_vma) DT_PREINIT_ARRAYSZ,
(bfd_vma) 0))
- return false;
+ return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".init_array") != NULL)
{
(bfd_vma) 0)
|| !elf_add_dynamic_entry (info, (bfd_vma) DT_INIT_ARRAYSZ,
(bfd_vma) 0))
- return false;
+ return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".fini_array") != NULL)
{
(bfd_vma) 0)
|| !elf_add_dynamic_entry (info, (bfd_vma) DT_FINI_ARRAYSZ,
(bfd_vma) 0))
- return false;
+ return FALSE;
}
dynstr = bfd_get_section_by_name (dynobj, ".dynstr");
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_STRSZ, strsize)
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_SYMENT,
(bfd_vma) sizeof (Elf_External_Sym)))
- return false;
+ return FALSE;
}
}
sections. */
if (bed->elf_backend_size_dynamic_sections
&& ! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info))
- return false;
+ return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
{
s->_raw_size = size;
s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
- return false;
+ return FALSE;
/* Fill in the version definition section. */
name = basename (output_bfd->filename);
def.vd_hash = bfd_elf_hash (name);
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
- name, false);
+ name, FALSE);
if (indx == (bfd_size_type) -1)
- return false;
+ return FALSE;
defaux.vda_name = indx;
}
defaux.vda_next = 0;
unsigned int cdeps;
struct bfd_elf_version_deps *n;
struct elf_link_hash_entry *h;
+ struct bfd_link_hash_entry *bh;
cdeps = 0;
for (n = t->deps; n != NULL; n = n->next)
++cdeps;
/* Add a symbol representing this version. */
- h = NULL;
+ bh = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, dynobj, t->name, BSF_GLOBAL, bfd_abs_section_ptr,
- (bfd_vma) 0, (const char *) NULL, false,
- get_elf_backend_data (dynobj)->collect,
- (struct bfd_link_hash_entry **) &h)))
- return false;
+ (bfd_vma) 0, (const char *) NULL, FALSE,
+ get_elf_backend_data (dynobj)->collect, &bh)))
+ return FALSE;
+ h = (struct elf_link_hash_entry *) bh;
h->elf_link_hash_flags &= ~ ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
h->verinfo.vertree = t;
if (! _bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
+ return FALSE;
def.vd_version = VER_DEF_CURRENT;
def.vd_flags = 0;
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_VERDEF, (bfd_vma) 0)
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_VERDEFNUM,
(bfd_vma) cdefs))
- return false;
+ return FALSE;
elf_tdata (output_bfd)->cverdefs = cdefs;
}
- if (info->new_dtags && info->flags)
+ if ((info->new_dtags && info->flags) || (info->flags & DF_STATIC_TLS))
{
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FLAGS, info->flags))
- return false;
+ return FALSE;
}
if (info->flags_1)
{
- if (! info->shared)
+ if (info->executable)
info->flags_1 &= ~ (DF_1_INITFIRST
| DF_1_NODELETE
| DF_1_NOOPEN);
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FLAGS_1,
info->flags_1))
- return false;
+ return FALSE;
}
/* Work out the size of the version reference section. */
sinfo.vers = elf_tdata (output_bfd)->cverdefs;
if (sinfo.vers == 0)
sinfo.vers = 1;
- sinfo.failed = false;
+ sinfo.failed = FALSE;
elf_link_hash_traverse (elf_hash_table (info),
- elf_link_find_version_dependencies,
+ _bfd_elf_link_find_version_dependencies,
(PTR) &sinfo);
if (elf_tdata (output_bfd)->verref == NULL)
s->_raw_size = size;
s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
if (s->contents == NULL)
- return false;
+ return FALSE;
p = s->contents;
for (t = elf_tdata (output_bfd)->verref;
elf_dt_name (t->vn_bfd) != NULL
? elf_dt_name (t->vn_bfd)
: basename (t->vn_bfd->filename),
- false);
+ FALSE);
if (indx == (bfd_size_type) -1)
- return false;
+ return FALSE;
t->vn_file = indx;
t->vn_aux = sizeof (Elf_External_Verneed);
if (t->vn_nextref == NULL)
{
a->vna_hash = bfd_elf_hash (a->vna_nodename);
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
- a->vna_nodename, false);
+ a->vna_nodename, FALSE);
if (indx == (bfd_size_type) -1)
- return false;
+ return FALSE;
a->vna_name = indx;
if (a->vna_nextptr == NULL)
a->vna_next = 0;
(bfd_vma) 0)
|| ! elf_add_dynamic_entry (info, (bfd_vma) DT_VERNEEDNUM,
(bfd_vma) crefs))
- return false;
+ return FALSE;
elf_tdata (output_bfd)->cverrefs = crefs;
}
s->_raw_size = dynsymcount * sizeof (Elf_External_Versym);
s->contents = (bfd_byte *) bfd_zalloc (output_bfd, s->_raw_size);
if (s->contents == NULL)
- return false;
+ return FALSE;
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_VERSYM, (bfd_vma) 0))
- return false;
+ return FALSE;
}
/* Set the size of the .dynsym and .hash sections. We counted
s->_raw_size = dynsymcount * sizeof (Elf_External_Sym);
s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
- return false;
+ return FALSE;
if (dynsymcount != 0)
{
BFD_ASSERT (s != NULL);
hash_entry_size = elf_section_data (s)->this_hdr.sh_entsize;
s->_raw_size = ((2 + bucketcount + dynsymcount) * hash_entry_size);
- s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
+ s->contents = (bfd_byte *) bfd_zalloc (output_bfd, s->_raw_size);
if (s->contents == NULL)
- return false;
- memset (s->contents, 0, (size_t) s->_raw_size);
+ return FALSE;
bfd_put (8 * hash_entry_size, output_bfd, (bfd_vma) bucketcount,
s->contents);
for (dtagcount = 0; dtagcount <= info->spare_dynamic_tags; ++dtagcount)
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_NULL, (bfd_vma) 0))
- return false;
+ return FALSE;
}
- return true;
+ return TRUE;
}
\f
/* This function is used to adjust offsets into .dynstr for
dynamic symbols. This is called via elf_link_hash_traverse. */
-static boolean elf_adjust_dynstr_offsets
-PARAMS ((struct elf_link_hash_entry *, PTR));
+static bfd_boolean elf_adjust_dynstr_offsets
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean
+static bfd_boolean
elf_adjust_dynstr_offsets (h, data)
struct elf_link_hash_entry *h;
PTR data;
{
struct elf_strtab_hash *dynstr = (struct elf_strtab_hash *) data;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
if (h->dynindx != -1)
h->dynstr_index = _bfd_elf_strtab_offset (dynstr, h->dynstr_index);
- return true;
+ return TRUE;
}
/* Assign string offsets in .dynstr, update all structures referencing
them. */
-static boolean
+static bfd_boolean
elf_finalize_dynstr (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
dyncon = (Elf_External_Dyn *) sdyn->contents;
dynconend = (Elf_External_Dyn *) (sdyn->contents +
- sdyn->_raw_size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
-
- elf_swap_dyn_in (dynobj, dyncon, & dyn);
- switch (dyn.d_tag)
- {
- case DT_STRSZ:
- dyn.d_un.d_val = size;
- elf_swap_dyn_out (dynobj, & dyn, dyncon);
- break;
- case DT_NEEDED:
- case DT_SONAME:
- case DT_RPATH:
- case DT_RUNPATH:
- case DT_FILTER:
- case DT_AUXILIARY:
- dyn.d_un.d_val = _bfd_elf_strtab_offset (dynstr, dyn.d_un.d_val);
- elf_swap_dyn_out (dynobj, & dyn, dyncon);
- break;
- default:
- break;
- }
- }
-
- /* Now update local dynamic symbols. */
- for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
- entry->isym.st_name = _bfd_elf_strtab_offset (dynstr,
- entry->isym.st_name);
-
- /* And the rest of dynamic symbols. */
- elf_link_hash_traverse (elf_hash_table (info),
- elf_adjust_dynstr_offsets, dynstr);
-
- /* Adjust version definitions. */
- if (elf_tdata (output_bfd)->cverdefs)
- {
- asection *s;
- bfd_byte *p;
- bfd_size_type i;
- Elf_Internal_Verdef def;
- Elf_Internal_Verdaux defaux;
-
- s = bfd_get_section_by_name (dynobj, ".gnu.version_d");
- p = (bfd_byte *) s->contents;
- do
- {
- _bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p,
- &def);
- p += sizeof (Elf_External_Verdef);
- for (i = 0; i < def.vd_cnt; ++i)
- {
- _bfd_elf_swap_verdaux_in (output_bfd,
- (Elf_External_Verdaux *) p, &defaux);
- defaux.vda_name = _bfd_elf_strtab_offset (dynstr,
- defaux.vda_name);
- _bfd_elf_swap_verdaux_out (output_bfd,
- &defaux, (Elf_External_Verdaux *) p);
- p += sizeof (Elf_External_Verdaux);
- }
- }
- while (def.vd_next);
- }
-
- /* Adjust version references. */
- if (elf_tdata (output_bfd)->verref)
- {
- asection *s;
- bfd_byte *p;
- bfd_size_type i;
- Elf_Internal_Verneed need;
- Elf_Internal_Vernaux needaux;
-
- s = bfd_get_section_by_name (dynobj, ".gnu.version_r");
- p = (bfd_byte *) s->contents;
- do
- {
- _bfd_elf_swap_verneed_in (output_bfd, (Elf_External_Verneed *) p,
- &need);
- need.vn_file = _bfd_elf_strtab_offset (dynstr, need.vn_file);
- _bfd_elf_swap_verneed_out (output_bfd, &need,
- (Elf_External_Verneed *) p);
- p += sizeof (Elf_External_Verneed);
- for (i = 0; i < need.vn_cnt; ++i)
- {
- _bfd_elf_swap_vernaux_in (output_bfd,
- (Elf_External_Vernaux *) p, &needaux);
- needaux.vna_name = _bfd_elf_strtab_offset (dynstr,
- needaux.vna_name);
- _bfd_elf_swap_vernaux_out (output_bfd,
- &needaux,
- (Elf_External_Vernaux *) p);
- p += sizeof (Elf_External_Vernaux);
- }
- }
- while (need.vn_next);
- }
-
- return true;
-}
-
-/* Fix up the flags for a symbol. This handles various cases which
- can only be fixed after all the input files are seen. This is
- currently called by both adjust_dynamic_symbol and
- assign_sym_version, which is unnecessary but perhaps more robust in
- the face of future changes. */
-
-static boolean
-elf_fix_symbol_flags (h, eif)
- struct elf_link_hash_entry *h;
- struct elf_info_failed *eif;
-{
- /* If this symbol was mentioned in a non-ELF file, try to set
- DEF_REGULAR and REF_REGULAR correctly. This is the only way to
- permit a non-ELF file to correctly refer to a symbol defined in
- an ELF dynamic object. */
- if ((h->elf_link_hash_flags & ELF_LINK_NON_ELF) != 0)
- {
- while (h->root.type == bfd_link_hash_indirect)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_REF_REGULAR_NONWEAK);
- else
- {
- if (h->root.u.def.section->owner != NULL
- && (bfd_get_flavour (h->root.u.def.section->owner)
- == bfd_target_elf_flavour))
- h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_REF_REGULAR_NONWEAK);
- else
- h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
- }
-
- if (h->dynindx == -1
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
- {
- if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h))
- {
- eif->failed = true;
- return false;
- }
- }
- }
- else
- {
- /* Unfortunately, ELF_LINK_NON_ELF is only correct if the symbol
- was first seen in a non-ELF file. Fortunately, if the symbol
- was first seen in an ELF file, we're probably OK unless the
- symbol was defined in a non-ELF file. Catch that case here.
- FIXME: We're still in trouble if the symbol was first seen in
- a dynamic object, and then later in a non-ELF regular object. */
- if ((h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
- && (h->root.u.def.section->owner != NULL
- ? (bfd_get_flavour (h->root.u.def.section->owner)
- != bfd_target_elf_flavour)
- : (bfd_is_abs_section (h->root.u.def.section)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) == 0)))
- h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
- }
-
- /* If this is a final link, and the symbol was defined as a common
- symbol in a regular object file, and there was no definition in
- any dynamic object, then the linker will have allocated space for
- the symbol in a common section but the ELF_LINK_HASH_DEF_REGULAR
- flag will not have been set. */
- if (h->root.type == bfd_link_hash_defined
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- && (h->root.u.def.section->owner->flags & DYNAMIC) == 0)
- h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
-
- /* If -Bsymbolic was used (which means to bind references to global
- symbols to the definition within the shared object), and this
- symbol was defined in a regular object, then it actually doesn't
- need a PLT entry, and we can accomplish that by forcing it local.
- Likewise, if the symbol has hidden or internal visibility.
- FIXME: It might be that we also do not need a PLT for other
- non-hidden visibilities, but we would have to tell that to the
- backend specifically; we can't just clear PLT-related data here. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
- && eif->info->shared
- && is_elf_hash_table (eif->info)
- && (eif->info->symbolic
- || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
- || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
- {
- struct elf_backend_data *bed;
- boolean force_local;
-
- bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
-
- force_local = (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
- || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN);
- (*bed->elf_backend_hide_symbol) (eif->info, h, force_local);
- }
-
- /* If this is a weak defined symbol in a dynamic object, and we know
- the real definition in the dynamic object, copy interesting flags
- over to the real definition. */
- if (h->weakdef != NULL)
- {
- struct elf_link_hash_entry *weakdef;
-
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak);
- weakdef = h->weakdef;
- BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined
- || weakdef->root.type == bfd_link_hash_defweak);
- BFD_ASSERT (weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC);
-
- /* If the real definition is defined by a regular object file,
- don't do anything special. See the longer description in
- elf_adjust_dynamic_symbol, below. */
- if ((weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
- h->weakdef = NULL;
- else
- {
- struct elf_backend_data *bed;
-
- bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
- (*bed->elf_backend_copy_indirect_symbol) (weakdef, h);
- }
- }
-
- return true;
-}
-
-/* Make the backend pick a good value for a dynamic symbol. This is
- called via elf_link_hash_traverse, and also calls itself
- recursively. */
-
-static boolean
-elf_adjust_dynamic_symbol (h, data)
- struct elf_link_hash_entry *h;
- PTR data;
-{
- struct elf_info_failed *eif = (struct elf_info_failed *) data;
- bfd *dynobj;
- struct elf_backend_data *bed;
-
- /* Ignore indirect symbols. These are added by the versioning code. */
- if (h->root.type == bfd_link_hash_indirect)
- return true;
-
- if (! is_elf_hash_table (eif->info))
- return false;
-
- /* Fix the symbol flags. */
- if (! elf_fix_symbol_flags (h, eif))
- return false;
-
- /* If this symbol does not require a PLT entry, and it is not
- defined by a dynamic object, or is not referenced by a regular
- object, ignore it. We do have to handle a weak defined symbol,
- even if no regular object refers to it, if we decided to add it
- to the dynamic symbol table. FIXME: Do we normally need to worry
- about symbols which are defined by one dynamic object and
- referenced by another one? */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
- || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- || ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
- && (h->weakdef == NULL || h->weakdef->dynindx == -1))))
- {
- h->plt.offset = (bfd_vma) -1;
- return true;
- }
-
- /* If we've already adjusted this symbol, don't do it again. This
- can happen via a recursive call. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
- return true;
-
- /* Don't look at this symbol again. Note that we must set this
- after checking the above conditions, because we may look at a
- symbol once, decide not to do anything, and then get called
- recursively later after REF_REGULAR is set below. */
- h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED;
-
- /* If this is a weak definition, and we know a real definition, and
- the real symbol is not itself defined by a regular object file,
- then get a good value for the real definition. We handle the
- real symbol first, for the convenience of the backend routine.
-
- Note that there is a confusing case here. If the real definition
- is defined by a regular object file, we don't get the real symbol
- from the dynamic object, but we do get the weak symbol. If the
- processor backend uses a COPY reloc, then if some routine in the
- dynamic object changes the real symbol, we will not see that
- change in the corresponding weak symbol. This is the way other
- ELF linkers work as well, and seems to be a result of the shared
- library model.
-
- I will clarify this issue. Most SVR4 shared libraries define the
- variable _timezone and define timezone as a weak synonym. The
- tzset call changes _timezone. If you write
- extern int timezone;
- int _timezone = 5;
- int main () { tzset (); printf ("%d %d\n", timezone, _timezone); }
- you might expect that, since timezone is a synonym for _timezone,
- the same number will print both times. However, if the processor
- backend uses a COPY reloc, then actually timezone will be copied
- into your process image, and, since you define _timezone
- yourself, _timezone will not. Thus timezone and _timezone will
- wind up at different memory locations. The tzset call will set
- _timezone, leaving timezone unchanged. */
-
- if (h->weakdef != NULL)
- {
- /* If we get to this point, we know there is an implicit
- reference by a regular object file via the weak symbol H.
- FIXME: Is this really true? What if the traversal finds
- H->WEAKDEF before it finds H? */
- h->weakdef->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
-
- if (! elf_adjust_dynamic_symbol (h->weakdef, (PTR) eif))
- return false;
- }
-
- /* If a symbol has no type and no size and does not require a PLT
- entry, then we are probably about to do the wrong thing here: we
- are probably going to create a COPY reloc for an empty object.
- This case can arise when a shared object is built with assembly
- code, and the assembly code fails to set the symbol type. */
- if (h->size == 0
- && h->type == STT_NOTYPE
- && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
- (*_bfd_error_handler)
- (_("warning: type and size of dynamic symbol `%s' are not defined"),
- h->root.root.string);
-
- dynobj = elf_hash_table (eif->info)->dynobj;
- bed = get_elf_backend_data (dynobj);
- if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))
- {
- eif->failed = true;
- return false;
- }
-
- return true;
-}
-\f
-/* This routine is used to export all defined symbols into the dynamic
- symbol table. It is called via elf_link_hash_traverse. */
-
-static boolean
-elf_export_symbol (h, data)
- struct elf_link_hash_entry *h;
- PTR data;
-{
- struct elf_info_failed *eif = (struct elf_info_failed *) data;
-
- /* Ignore indirect symbols. These are added by the versioning code. */
- if (h->root.type == bfd_link_hash_indirect)
- return true;
-
- if (h->dynindx == -1
- && (h->elf_link_hash_flags
- & (ELF_LINK_HASH_DEF_REGULAR | ELF_LINK_HASH_REF_REGULAR)) != 0)
- {
- struct bfd_elf_version_tree *t;
- struct bfd_elf_version_expr *d;
-
- for (t = eif->verdefs; t != NULL; t = t->next)
- {
- if (t->globals != NULL)
- {
- for (d = t->globals; d != NULL; d = d->next)
- {
- if ((*d->match) (d, h->root.root.string))
- goto doit;
- }
- }
-
- if (t->locals != NULL)
- {
- for (d = t->locals ; d != NULL; d = d->next)
- {
- if ((*d->match) (d, h->root.root.string))
- return true;
- }
- }
- }
-
- if (!eif->verdefs)
- {
-doit:
- if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h))
- {
- eif->failed = true;
- return false;
- }
- }
- }
-
- return true;
-}
-\f
-/* Look through the symbols which are defined in other shared
- libraries and referenced here. Update the list of version
- dependencies. This will be put into the .gnu.version_r section.
- This function is called via elf_link_hash_traverse. */
-
-static boolean
-elf_link_find_version_dependencies (h, data)
- struct elf_link_hash_entry *h;
- PTR data;
-{
- struct elf_find_verdep_info *rinfo = (struct elf_find_verdep_info *) data;
- Elf_Internal_Verneed *t;
- Elf_Internal_Vernaux *a;
- bfd_size_type amt;
-
- /* We only care about symbols defined in shared objects with version
- information. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
- || h->dynindx == -1
- || h->verinfo.verdef == NULL)
- return true;
-
- /* See if we already know about this version. */
- for (t = elf_tdata (rinfo->output_bfd)->verref; t != NULL; t = t->vn_nextref)
- {
- if (t->vn_bfd != h->verinfo.verdef->vd_bfd)
- continue;
-
- for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
- if (a->vna_nodename == h->verinfo.verdef->vd_nodename)
- return true;
-
- break;
- }
-
- /* This is a new version. Add it to tree we are building. */
-
- if (t == NULL)
- {
- amt = sizeof *t;
- t = (Elf_Internal_Verneed *) bfd_zalloc (rinfo->output_bfd, amt);
- if (t == NULL)
- {
- rinfo->failed = true;
- return false;
- }
-
- t->vn_bfd = h->verinfo.verdef->vd_bfd;
- t->vn_nextref = elf_tdata (rinfo->output_bfd)->verref;
- elf_tdata (rinfo->output_bfd)->verref = t;
- }
-
- amt = sizeof *a;
- a = (Elf_Internal_Vernaux *) bfd_zalloc (rinfo->output_bfd, amt);
-
- /* Note that we are copying a string pointer here, and testing it
- above. If bfd_elf_string_from_elf_section is ever changed to
- discard the string data when low in memory, this will have to be
- fixed. */
- a->vna_nodename = h->verinfo.verdef->vd_nodename;
-
- a->vna_flags = h->verinfo.verdef->vd_flags;
- a->vna_nextptr = t->vn_auxptr;
-
- h->verinfo.verdef->vd_exp_refno = rinfo->vers;
- ++rinfo->vers;
-
- a->vna_other = h->verinfo.verdef->vd_exp_refno + 1;
-
- t->vn_auxptr = a;
-
- return true;
-}
-
-/* Figure out appropriate versions for all the symbols. We may not
- have the version number script until we have read all of the input
- files, so until that point we don't know which symbols should be
- local. This function is called via elf_link_hash_traverse. */
-
-static boolean
-elf_link_assign_sym_version (h, data)
- struct elf_link_hash_entry *h;
- PTR data;
-{
- struct elf_assign_sym_version_info *sinfo;
- struct bfd_link_info *info;
- struct elf_backend_data *bed;
- struct elf_info_failed eif;
- char *p;
- bfd_size_type amt;
-
- sinfo = (struct elf_assign_sym_version_info *) data;
- info = sinfo->info;
-
- /* Fix the symbol flags. */
- eif.failed = false;
- eif.info = info;
- if (! elf_fix_symbol_flags (h, &eif))
- {
- if (eif.failed)
- sinfo->failed = true;
- return false;
- }
-
- /* We only need version numbers for symbols defined in regular
- objects. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- return true;
-
- bed = get_elf_backend_data (sinfo->output_bfd);
- p = strchr (h->root.root.string, ELF_VER_CHR);
- if (p != NULL && h->verinfo.vertree == NULL)
- {
- struct bfd_elf_version_tree *t;
- boolean hidden;
-
- hidden = true;
-
- /* There are two consecutive ELF_VER_CHR characters if this is
- not a hidden symbol. */
- ++p;
- if (*p == ELF_VER_CHR)
- {
- hidden = false;
- ++p;
- }
-
- /* If there is no version string, we can just return out. */
- if (*p == '\0')
- {
- if (hidden)
- h->elf_link_hash_flags |= ELF_LINK_HIDDEN;
- return true;
- }
-
- /* Look for the version. If we find it, it is no longer weak. */
- for (t = sinfo->verdefs; t != NULL; t = t->next)
- {
- if (strcmp (t->name, p) == 0)
- {
- size_t len;
- char *alc;
- struct bfd_elf_version_expr *d;
-
- len = p - h->root.root.string;
- alc = bfd_malloc ((bfd_size_type) len);
- if (alc == NULL)
- return false;
- strncpy (alc, h->root.root.string, len - 1);
- alc[len - 1] = '\0';
- if (alc[len - 2] == ELF_VER_CHR)
- alc[len - 2] = '\0';
-
- h->verinfo.vertree = t;
- t->used = true;
- d = NULL;
-
- if (t->globals != NULL)
- {
- for (d = t->globals; d != NULL; d = d->next)
- if ((*d->match) (d, alc))
- break;
- }
-
- /* See if there is anything to force this symbol to
- local scope. */
- if (d == NULL && t->locals != NULL)
- {
- for (d = t->locals; d != NULL; d = d->next)
- {
- if ((*d->match) (d, alc))
- {
- if (h->dynindx != -1
- && info->shared
- && ! info->export_dynamic)
- {
- (*bed->elf_backend_hide_symbol) (info, h, true);
- }
-
- break;
- }
- }
- }
-
- free (alc);
- break;
- }
- }
-
- /* If we are building an application, we need to create a
- version node for this version. */
- if (t == NULL && ! info->shared)
- {
- struct bfd_elf_version_tree **pp;
- int version_index;
-
- /* If we aren't going to export this symbol, we don't need
- to worry about it. */
- if (h->dynindx == -1)
- return true;
-
- amt = sizeof *t;
- t = ((struct bfd_elf_version_tree *)
- bfd_alloc (sinfo->output_bfd, amt));
- if (t == NULL)
- {
- sinfo->failed = true;
- return false;
- }
+ sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
- t->next = NULL;
- t->name = p;
- t->globals = NULL;
- t->locals = NULL;
- t->deps = NULL;
- t->name_indx = (unsigned int) -1;
- t->used = true;
-
- version_index = 1;
- /* Don't count anonymous version tag. */
- if (sinfo->verdefs != NULL && sinfo->verdefs->vernum == 0)
- version_index = 0;
- for (pp = &sinfo->verdefs; *pp != NULL; pp = &(*pp)->next)
- ++version_index;
- t->vernum = version_index;
-
- *pp = t;
-
- h->verinfo.vertree = t;
- }
- else if (t == NULL)
+ elf_swap_dyn_in (dynobj, dyncon, & dyn);
+ switch (dyn.d_tag)
{
- /* We could not find the version for a symbol when
- generating a shared archive. Return an error. */
- (*_bfd_error_handler)
- (_("%s: undefined versioned symbol name %s"),
- bfd_get_filename (sinfo->output_bfd), h->root.root.string);
- bfd_set_error (bfd_error_bad_value);
- sinfo->failed = true;
- return false;
+ case DT_STRSZ:
+ dyn.d_un.d_val = size;
+ elf_swap_dyn_out (dynobj, & dyn, dyncon);
+ break;
+ case DT_NEEDED:
+ case DT_SONAME:
+ case DT_RPATH:
+ case DT_RUNPATH:
+ case DT_FILTER:
+ case DT_AUXILIARY:
+ dyn.d_un.d_val = _bfd_elf_strtab_offset (dynstr, dyn.d_un.d_val);
+ elf_swap_dyn_out (dynobj, & dyn, dyncon);
+ break;
+ default:
+ break;
}
-
- if (hidden)
- h->elf_link_hash_flags |= ELF_LINK_HIDDEN;
}
- /* If we don't have a version for this symbol, see if we can find
- something. */
- if (h->verinfo.vertree == NULL && sinfo->verdefs != NULL)
- {
- struct bfd_elf_version_tree *t;
- struct bfd_elf_version_tree *deflt;
- struct bfd_elf_version_expr *d;
+ /* Now update local dynamic symbols. */
+ for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
+ entry->isym.st_name = _bfd_elf_strtab_offset (dynstr,
+ entry->isym.st_name);
- /* See if can find what version this symbol is in. If the
- symbol is supposed to be local, then don't actually register
- it. */
- deflt = NULL;
- for (t = sinfo->verdefs; t != NULL; t = t->next)
- {
- if (t->globals != NULL)
- {
- for (d = t->globals; d != NULL; d = d->next)
- {
- if ((*d->match) (d, h->root.root.string))
- {
- h->verinfo.vertree = t;
- break;
- }
- }
+ /* And the rest of dynamic symbols. */
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_adjust_dynstr_offsets, dynstr);
- if (d != NULL)
- break;
- }
+ /* Adjust version definitions. */
+ if (elf_tdata (output_bfd)->cverdefs)
+ {
+ asection *s;
+ bfd_byte *p;
+ bfd_size_type i;
+ Elf_Internal_Verdef def;
+ Elf_Internal_Verdaux defaux;
- if (t->locals != NULL)
+ s = bfd_get_section_by_name (dynobj, ".gnu.version_d");
+ p = (bfd_byte *) s->contents;
+ do
+ {
+ _bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p,
+ &def);
+ p += sizeof (Elf_External_Verdef);
+ for (i = 0; i < def.vd_cnt; ++i)
{
- for (d = t->locals; d != NULL; d = d->next)
- {
- if (d->pattern[0] == '*' && d->pattern[1] == '\0')
- deflt = t;
- else if ((*d->match) (d, h->root.root.string))
- {
- h->verinfo.vertree = t;
- if (h->dynindx != -1
- && info->shared
- && ! info->export_dynamic)
- {
- (*bed->elf_backend_hide_symbol) (info, h, true);
- }
- break;
- }
- }
-
- if (d != NULL)
- break;
+ _bfd_elf_swap_verdaux_in (output_bfd,
+ (Elf_External_Verdaux *) p, &defaux);
+ defaux.vda_name = _bfd_elf_strtab_offset (dynstr,
+ defaux.vda_name);
+ _bfd_elf_swap_verdaux_out (output_bfd,
+ &defaux, (Elf_External_Verdaux *) p);
+ p += sizeof (Elf_External_Verdaux);
}
}
+ while (def.vd_next);
+ }
+
+ /* Adjust version references. */
+ if (elf_tdata (output_bfd)->verref)
+ {
+ asection *s;
+ bfd_byte *p;
+ bfd_size_type i;
+ Elf_Internal_Verneed need;
+ Elf_Internal_Vernaux needaux;
- if (deflt != NULL && h->verinfo.vertree == NULL)
+ s = bfd_get_section_by_name (dynobj, ".gnu.version_r");
+ p = (bfd_byte *) s->contents;
+ do
{
- h->verinfo.vertree = deflt;
- if (h->dynindx != -1
- && info->shared
- && ! info->export_dynamic)
+ _bfd_elf_swap_verneed_in (output_bfd, (Elf_External_Verneed *) p,
+ &need);
+ need.vn_file = _bfd_elf_strtab_offset (dynstr, need.vn_file);
+ _bfd_elf_swap_verneed_out (output_bfd, &need,
+ (Elf_External_Verneed *) p);
+ p += sizeof (Elf_External_Verneed);
+ for (i = 0; i < need.vn_cnt; ++i)
{
- (*bed->elf_backend_hide_symbol) (info, h, true);
+ _bfd_elf_swap_vernaux_in (output_bfd,
+ (Elf_External_Vernaux *) p, &needaux);
+ needaux.vna_name = _bfd_elf_strtab_offset (dynstr,
+ needaux.vna_name);
+ _bfd_elf_swap_vernaux_out (output_bfd,
+ &needaux,
+ (Elf_External_Vernaux *) p);
+ p += sizeof (Elf_External_Vernaux);
}
}
+ while (need.vn_next);
}
- return true;
+ return TRUE;
}
\f
/* Final phase of ELF linker. */
asection *hash_sec;
/* symbol version section (.gnu.version). */
asection *symver_sec;
+ /* first SHF_TLS section (if any). */
+ asection *first_tls_sec;
/* Buffer large enough to hold contents of any section. */
bfd_byte *contents;
/* Buffer large enough to hold external relocs of any section. */
size_t symbuf_count;
/* Number of symbols which fit in symbuf. */
size_t symbuf_size;
+ /* And same for symshndxbuf. */
+ size_t shndxbuf_size;
};
-static boolean elf_link_output_sym
+static bfd_boolean elf_link_output_sym
PARAMS ((struct elf_final_link_info *, const char *,
Elf_Internal_Sym *, asection *));
-static boolean elf_link_flush_output_syms
+static bfd_boolean elf_link_flush_output_syms
PARAMS ((struct elf_final_link_info *));
-static boolean elf_link_output_extsym
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_sec_merge_syms
+static bfd_boolean elf_link_output_extsym
PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_link_input_bfd
+static bfd_boolean elf_link_check_versioned_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static bfd_boolean elf_link_input_bfd
PARAMS ((struct elf_final_link_info *, bfd *));
-static boolean elf_reloc_link_order
+static bfd_boolean elf_reloc_link_order
PARAMS ((bfd *, struct bfd_link_info *, asection *,
struct bfd_link_order *));
struct elf_outext_info
{
- boolean failed;
- boolean localsyms;
+ bfd_boolean failed;
+ bfd_boolean localsyms;
struct elf_final_link_info *finfo;
};
-/* Compute the size of, and allocate space for, REL_HDR which is the
- section header for a section containing relocations for O. */
-
-static boolean
-elf_link_size_reloc_section (abfd, rel_hdr, o)
- bfd *abfd;
- Elf_Internal_Shdr *rel_hdr;
- asection *o;
-{
- bfd_size_type reloc_count;
- bfd_size_type num_rel_hashes;
-
- /* Figure out how many relocations there will be. */
- if (rel_hdr == &elf_section_data (o)->rel_hdr)
- reloc_count = elf_section_data (o)->rel_count;
- else
- reloc_count = elf_section_data (o)->rel_count2;
-
- num_rel_hashes = o->reloc_count;
- if (num_rel_hashes < reloc_count)
- num_rel_hashes = reloc_count;
-
- /* That allows us to calculate the size of the section. */
- rel_hdr->sh_size = rel_hdr->sh_entsize * reloc_count;
-
- /* The contents field must last into write_object_contents, so we
- allocate it with bfd_alloc rather than malloc. Also since we
- cannot be sure that the contents will actually be filled in,
- we zero the allocated space. */
- rel_hdr->contents = (PTR) bfd_zalloc (abfd, rel_hdr->sh_size);
- if (rel_hdr->contents == NULL && rel_hdr->sh_size != 0)
- return false;
-
- /* We only allocate one set of hash entries, so we only do it the
- first time we are called. */
- if (elf_section_data (o)->rel_hashes == NULL
- && num_rel_hashes)
- {
- struct elf_link_hash_entry **p;
-
- p = ((struct elf_link_hash_entry **)
- bfd_zmalloc (num_rel_hashes
- * sizeof (struct elf_link_hash_entry *)));
- if (p == NULL)
- return false;
-
- elf_section_data (o)->rel_hashes = p;
- }
-
- return true;
-}
-
-/* When performing a relocateable link, the input relocations are
+/* 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 in
REL_HDR (there are COUNT of them), using the data in REL_HASH. */
{
unsigned int i;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
- Elf_Internal_Rel *irel;
- Elf_Internal_Rela *irela;
- bfd_size_type amt = sizeof (Elf_Internal_Rel) * bed->s->int_rels_per_ext_rel;
+ bfd_byte *erela;
+ void (*swap_in) PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
+ void (*swap_out) PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *));
- irel = (Elf_Internal_Rel *) bfd_zmalloc (amt);
- if (irel == NULL)
+ if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
{
- (*_bfd_error_handler) (_("Error: out of memory"));
- abort ();
+ swap_in = bed->s->swap_reloc_in;
+ swap_out = bed->s->swap_reloc_out;
}
-
- amt = sizeof (Elf_Internal_Rela) * bed->s->int_rels_per_ext_rel;
- irela = (Elf_Internal_Rela *) bfd_zmalloc (amt);
- if (irela == NULL)
+ else if (rel_hdr->sh_entsize == sizeof (Elf_External_Rela))
{
- (*_bfd_error_handler) (_("Error: out of memory"));
- abort ();
+ swap_in = bed->s->swap_reloca_in;
+ swap_out = bed->s->swap_reloca_out;
}
+ else
+ abort ();
+
+ if (bed->s->int_rels_per_ext_rel > MAX_INT_RELS_PER_EXT_REL)
+ abort ();
- for (i = 0; i < count; i++, rel_hash++)
+ erela = rel_hdr->contents;
+ for (i = 0; i < count; i++, rel_hash++, erela += rel_hdr->sh_entsize)
{
+ Elf_Internal_Rela irela[MAX_INT_RELS_PER_EXT_REL];
+ unsigned int j;
+
if (*rel_hash == NULL)
continue;
BFD_ASSERT ((*rel_hash)->indx >= 0);
- if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
- {
- Elf_External_Rel *erel;
- unsigned int j;
-
- erel = (Elf_External_Rel *) rel_hdr->contents + i;
- if (bed->s->swap_reloc_in)
- (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, irel);
- else
- elf_swap_reloc_in (abfd, erel, irel);
-
- for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
- irel[j].r_info = ELF_R_INFO ((*rel_hash)->indx,
- ELF_R_TYPE (irel[j].r_info));
-
- if (bed->s->swap_reloc_out)
- (*bed->s->swap_reloc_out) (abfd, irel, (bfd_byte *) erel);
- else
- elf_swap_reloc_out (abfd, irel, erel);
- }
- else
- {
- Elf_External_Rela *erela;
- unsigned int j;
-
- BFD_ASSERT (rel_hdr->sh_entsize
- == sizeof (Elf_External_Rela));
-
- erela = (Elf_External_Rela *) rel_hdr->contents + i;
- if (bed->s->swap_reloca_in)
- (*bed->s->swap_reloca_in) (abfd, (bfd_byte *) erela, irela);
- else
- elf_swap_reloca_in (abfd, erela, irela);
-
- for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
- irela[j].r_info = ELF_R_INFO ((*rel_hash)->indx,
- ELF_R_TYPE (irela[j].r_info));
-
- if (bed->s->swap_reloca_out)
- (*bed->s->swap_reloca_out) (abfd, irela, (bfd_byte *) erela);
- else
- elf_swap_reloca_out (abfd, irela, erela);
- }
+ (*swap_in) (abfd, erela, irela);
+ for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
+ irela[j].r_info = ELF_R_INFO ((*rel_hash)->indx,
+ ELF_R_TYPE (irela[j].r_info));
+ (*swap_out) (abfd, irela, erela);
}
-
- free (irel);
- free (irela);
}
-struct elf_link_sort_rela {
+struct elf_link_sort_rela
+{
bfd_vma offset;
enum elf_reloc_type_class type;
- union {
- Elf_Internal_Rel rel;
- Elf_Internal_Rela rela;
- } u;
+ /* We use this as an array of size int_rels_per_ext_rel. */
+ Elf_Internal_Rela rela[1];
};
static int
return 1;
if (relativea > relativeb)
return -1;
- if (ELF_R_SYM (a->u.rel.r_info) < ELF_R_SYM (b->u.rel.r_info))
+ if (ELF_R_SYM (a->rela->r_info) < ELF_R_SYM (b->rela->r_info))
return -1;
- if (ELF_R_SYM (a->u.rel.r_info) > ELF_R_SYM (b->u.rel.r_info))
+ if (ELF_R_SYM (a->rela->r_info) > ELF_R_SYM (b->rela->r_info))
return 1;
- if (a->u.rel.r_offset < b->u.rel.r_offset)
+ if (a->rela->r_offset < b->rela->r_offset)
return -1;
- if (a->u.rel.r_offset > b->u.rel.r_offset)
+ if (a->rela->r_offset > b->rela->r_offset)
return 1;
return 0;
}
return -1;
if (copya > copyb)
return 1;
- if (a->u.rel.r_offset < b->u.rel.r_offset)
+ if (a->rela->r_offset < b->rela->r_offset)
return -1;
- if (a->u.rel.r_offset > b->u.rel.r_offset)
+ if (a->rela->r_offset > b->rela->r_offset)
return 1;
return 0;
}
{
bfd *dynobj = elf_hash_table (info)->dynobj;
asection *reldyn, *o;
- boolean rel = false;
bfd_size_type count, size;
- size_t i, j, ret;
- struct elf_link_sort_rela *rela;
+ size_t i, ret, sort_elt, ext_size;
+ bfd_byte *sort, *s_non_relative, *p;
+ struct elf_link_sort_rela *sq;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ int i2e = bed->s->int_rels_per_ext_rel;
+ void (*swap_in) PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
+ void (*swap_out) PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *));
reldyn = bfd_get_section_by_name (abfd, ".rela.dyn");
if (reldyn == NULL || reldyn->_raw_size == 0)
reldyn = bfd_get_section_by_name (abfd, ".rel.dyn");
if (reldyn == NULL || reldyn->_raw_size == 0)
return 0;
- rel = true;
- count = reldyn->_raw_size / sizeof (Elf_External_Rel);
+ ext_size = sizeof (Elf_External_Rel);
+ swap_in = bed->s->swap_reloc_in;
+ swap_out = bed->s->swap_reloc_out;
}
else
- count = reldyn->_raw_size / sizeof (Elf_External_Rela);
+ {
+ ext_size = sizeof (Elf_External_Rela);
+ swap_in = bed->s->swap_reloca_in;
+ swap_out = bed->s->swap_reloca_out;
+ }
+ count = reldyn->_raw_size / ext_size;
size = 0;
for (o = dynobj->sections; o != NULL; o = o->next)
if (size != reldyn->_raw_size)
return 0;
- rela = (struct elf_link_sort_rela *) bfd_zmalloc (sizeof (*rela) * count);
- if (rela == NULL)
+ sort_elt = (sizeof (struct elf_link_sort_rela)
+ + (i2e - 1) * sizeof (Elf_Internal_Rela));
+ sort = bfd_zmalloc (sort_elt * count);
+ if (sort == NULL)
{
(*info->callbacks->warning)
(info, _("Not enough memory to sort relocations"), 0, abfd, 0,
== (SEC_HAS_CONTENTS|SEC_LINKER_CREATED)
&& o->output_section == reldyn)
{
- if (rel)
- {
- Elf_External_Rel *erel, *erelend;
- struct elf_link_sort_rela *s;
-
- erel = (Elf_External_Rel *) o->contents;
- erelend = (Elf_External_Rel *) (o->contents + o->_raw_size);
- s = rela + o->output_offset / sizeof (Elf_External_Rel);
- for (; erel < erelend; erel++, s++)
- {
- if (bed->s->swap_reloc_in)
- (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, &s->u.rel);
- else
- elf_swap_reloc_in (abfd, erel, &s->u.rel);
+ bfd_byte *erel, *erelend;
- s->type = (*bed->elf_backend_reloc_type_class) (&s->u.rela);
- }
- }
- else
+ erel = o->contents;
+ erelend = o->contents + o->_raw_size;
+ p = sort + o->output_offset / ext_size * sort_elt;
+ while (erel < erelend)
{
- Elf_External_Rela *erela, *erelaend;
- struct elf_link_sort_rela *s;
-
- erela = (Elf_External_Rela *) o->contents;
- erelaend = (Elf_External_Rela *) (o->contents + o->_raw_size);
- s = rela + o->output_offset / sizeof (Elf_External_Rela);
- for (; erela < erelaend; erela++, s++)
- {
- if (bed->s->swap_reloca_in)
- (*bed->s->swap_reloca_in) (dynobj, (bfd_byte *) erela,
- &s->u.rela);
- else
- elf_swap_reloca_in (dynobj, erela, &s->u.rela);
-
- s->type = (*bed->elf_backend_reloc_type_class) (&s->u.rela);
- }
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ (*swap_in) (abfd, erel, s->rela);
+ s->type = (*bed->elf_backend_reloc_type_class) (s->rela);
+ p += sort_elt;
+ erel += ext_size;
}
}
- qsort (rela, (size_t) count, sizeof (*rela), elf_link_sort_cmp1);
- for (ret = 0; ret < count && rela[ret].type == reloc_class_relative; ret++)
- ;
- for (i = ret, j = ret; i < count; i++)
+ qsort (sort, (size_t) count, sort_elt, elf_link_sort_cmp1);
+
+ for (i = 0, p = sort; i < count; i++, p += sort_elt)
+ {
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ if (s->type != reloc_class_relative)
+ break;
+ }
+ ret = i;
+ s_non_relative = p;
+
+ sq = (struct elf_link_sort_rela *) s_non_relative;
+ for (; i < count; i++, p += sort_elt)
{
- if (ELF_R_SYM (rela[i].u.rel.r_info) != ELF_R_SYM (rela[j].u.rel.r_info))
- j = i;
- rela[i].offset = rela[j].u.rel.r_offset;
+ struct elf_link_sort_rela *sp = (struct elf_link_sort_rela *) p;
+ if (ELF_R_SYM (sp->rela->r_info) != ELF_R_SYM (sq->rela->r_info))
+ sq = sp;
+ sp->offset = sq->rela->r_offset;
}
- qsort (rela + ret, (size_t) count - ret, sizeof (*rela), elf_link_sort_cmp2);
+
+ qsort (s_non_relative, (size_t) count - ret, sort_elt, elf_link_sort_cmp2);
for (o = dynobj->sections; o != NULL; o = o->next)
if ((o->flags & (SEC_HAS_CONTENTS|SEC_LINKER_CREATED))
== (SEC_HAS_CONTENTS|SEC_LINKER_CREATED)
&& o->output_section == reldyn)
{
- if (rel)
- {
- Elf_External_Rel *erel, *erelend;
- struct elf_link_sort_rela *s;
+ bfd_byte *erel, *erelend;
- erel = (Elf_External_Rel *) o->contents;
- erelend = (Elf_External_Rel *) (o->contents + o->_raw_size);
- s = rela + o->output_offset / sizeof (Elf_External_Rel);
- for (; erel < erelend; erel++, s++)
- {
- if (bed->s->swap_reloc_out)
- (*bed->s->swap_reloc_out) (abfd, &s->u.rel,
- (bfd_byte *) erel);
- else
- elf_swap_reloc_out (abfd, &s->u.rel, erel);
- }
- }
- else
+ erel = o->contents;
+ erelend = o->contents + o->_raw_size;
+ p = sort + o->output_offset / ext_size * sort_elt;
+ while (erel < erelend)
{
- Elf_External_Rela *erela, *erelaend;
- struct elf_link_sort_rela *s;
-
- erela = (Elf_External_Rela *) o->contents;
- erelaend = (Elf_External_Rela *) (o->contents + o->_raw_size);
- s = rela + o->output_offset / sizeof (Elf_External_Rela);
- for (; erela < erelaend; erela++, s++)
- {
- if (bed->s->swap_reloca_out)
- (*bed->s->swap_reloca_out) (dynobj, &s->u.rela,
- (bfd_byte *) erela);
- else
- elf_swap_reloca_out (dynobj, &s->u.rela, erela);
- }
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ (*swap_out) (abfd, s->rela, erel);
+ p += sort_elt;
+ erel += ext_size;
}
}
- free (rela);
+ free (sort);
*psec = reldyn;
return ret;
}
/* Do the final step of an ELF link. */
-boolean
+bfd_boolean
elf_bfd_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- boolean dynamic;
- boolean emit_relocs;
+ bfd_boolean dynamic;
+ bfd_boolean emit_relocs;
bfd *dynobj;
struct elf_final_link_info finfo;
register asection *o;
Elf_Internal_Sym elfsym;
unsigned int i;
Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Shdr *symtab_shndx_hdr;
Elf_Internal_Shdr *symstrtab_hdr;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
struct elf_outext_info eoinfo;
- boolean merged;
+ bfd_boolean merged;
size_t relativecount = 0;
asection *reldyn = 0;
bfd_size_type amt;
if (! is_elf_hash_table (info))
- return false;
+ return FALSE;
if (info->shared)
abfd->flags |= DYNAMIC;
dynamic = elf_hash_table (info)->dynamic_sections_created;
dynobj = elf_hash_table (info)->dynobj;
- emit_relocs = (info->relocateable
+ emit_relocs = (info->relocatable
|| info->emitrelocations
|| bed->elf_backend_emit_relocs);
finfo.output_bfd = abfd;
finfo.symstrtab = elf_stringtab_init ();
if (finfo.symstrtab == NULL)
- return false;
+ return FALSE;
if (! dynamic)
{
finfo.symbuf = NULL;
finfo.symshndxbuf = NULL;
finfo.symbuf_count = 0;
+ finfo.shndxbuf_size = 0;
+ finfo.first_tls_sec = NULL;
+ for (o = abfd->sections; o != (asection *) NULL; o = o->next)
+ if ((o->flags & SEC_THREAD_LOCAL) != 0
+ && (o->flags & SEC_LOAD) != 0)
+ {
+ finfo.first_tls_sec = o;
+ break;
+ }
/* Count up the number of relocations we will output for each output
section, so that we know the sizes of the reloc sections. We
max_internal_reloc_count = 0;
max_sym_count = 0;
max_sym_shndx_count = 0;
- merged = false;
+ merged = FALSE;
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
{
+ struct bfd_elf_section_data *esdo = elf_section_data (o);
o->reloc_count = 0;
for (p = o->link_order_head; p != NULL; p = p->next)
{
+ unsigned int reloc_count = 0;
+ struct bfd_elf_section_data *esdi = NULL;
+ unsigned int *rel_count1;
+
if (p->type == bfd_section_reloc_link_order
|| p->type == bfd_symbol_reloc_link_order)
- ++o->reloc_count;
+ reloc_count = 1;
else if (p->type == bfd_indirect_link_order)
{
asection *sec;
sec = p->u.indirect.section;
+ esdi = elf_section_data (sec);
/* Mark all sections which are to be included in the
link. This will normally be every section. We need
to do this so that we can identify any sections which
the linker has decided to not include. */
- sec->linker_mark = true;
+ sec->linker_mark = TRUE;
if (sec->flags & SEC_MERGE)
- merged = true;
+ merged = TRUE;
- if (info->relocateable || info->emitrelocations)
- o->reloc_count += sec->reloc_count;
+ if (info->relocatable || info->emitrelocations)
+ reloc_count = sec->reloc_count;
else if (bed->elf_backend_count_relocs)
{
Elf_Internal_Rela * relocs;
- relocs = (NAME(_bfd_elf,link_read_relocs)
- (abfd, sec, (PTR) NULL,
- (Elf_Internal_Rela *) NULL, info->keep_memory));
+ relocs
+ = _bfd_elf_link_read_relocs (abfd, sec, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
- o->reloc_count
- += (*bed->elf_backend_count_relocs) (sec, relocs);
+ reloc_count = (*bed->elf_backend_count_relocs) (sec, relocs);
- if (!info->keep_memory)
+ if (elf_section_data (o)->relocs != relocs)
free (relocs);
}
}
}
}
+
+ if (reloc_count == 0)
+ continue;
+
+ o->reloc_count += reloc_count;
+
+ /* MIPS may have a mix of REL and RELA relocs on sections.
+ To support this curious ABI we keep reloc counts in
+ elf_section_data too. We must be careful to add the
+ relocations from the input section to the right output
+ count. FIXME: Get rid of one count. We have
+ o->reloc_count == esdo->rel_count + esdo->rel_count2. */
+ rel_count1 = &esdo->rel_count;
+ if (esdi != NULL)
+ {
+ bfd_boolean same_size;
+ bfd_size_type entsize1;
+
+ entsize1 = esdi->rel_hdr.sh_entsize;
+ BFD_ASSERT (entsize1 == sizeof (Elf_External_Rel)
+ || entsize1 == sizeof (Elf_External_Rela));
+ same_size = (!o->use_rela_p
+ == (entsize1 == sizeof (Elf_External_Rel)));
+
+ if (!same_size)
+ rel_count1 = &esdo->rel_count2;
+
+ if (esdi->rel_hdr2 != NULL)
+ {
+ bfd_size_type entsize2 = esdi->rel_hdr2->sh_entsize;
+ unsigned int alt_count;
+ unsigned int *rel_count2;
+
+ BFD_ASSERT (entsize2 != entsize1
+ && (entsize2 == sizeof (Elf_External_Rel)
+ || entsize2 == sizeof (Elf_External_Rela)));
+
+ rel_count2 = &esdo->rel_count2;
+ if (!same_size)
+ rel_count2 = &esdo->rel_count;
+
+ /* The following is probably too simplistic if the
+ backend counts output relocs unusually. */
+ BFD_ASSERT (bed->elf_backend_count_relocs == NULL);
+ alt_count = NUM_SHDR_ENTRIES (esdi->rel_hdr2);
+ *rel_count2 += alt_count;
+ reloc_count -= alt_count;
+ }
+ }
+ *rel_count1 += reloc_count;
}
if (o->reloc_count > 0)
o->vma = 0;
}
- if (! info->relocateable && merged)
+ if (! info->relocatable && merged)
elf_link_hash_traverse (elf_hash_table (info),
- elf_link_sec_merge_syms, (PTR) abfd);
+ _bfd_elf_link_sec_merge_syms, (PTR) abfd);
/* Figure out the file positions for everything but the symbol table
and the relocs. We set symcount to force assign_section_numbers
if (! _bfd_elf_compute_section_file_positions (abfd, info))
goto error_return;
- /* Figure out how many relocations we will have in each section.
- Just using RELOC_COUNT isn't good enough since that doesn't
- maintain a separate value for REL vs. RELA relocations. */
- if (emit_relocs)
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
- for (o = sub->sections; o != NULL; o = o->next)
- {
- asection *output_section;
-
- if (! o->linker_mark)
- {
- /* This section was omitted from the link. */
- continue;
- }
-
- output_section = o->output_section;
-
- if (output_section != NULL
- && (o->flags & SEC_RELOC) != 0)
- {
- struct bfd_elf_section_data *esdi
- = elf_section_data (o);
- struct bfd_elf_section_data *esdo
- = elf_section_data (output_section);
- unsigned int *rel_count;
- unsigned int *rel_count2;
-
- /* We must be careful to add the relocation froms the
- input section to the right output count. */
- if (esdi->rel_hdr.sh_entsize == esdo->rel_hdr.sh_entsize)
- {
- rel_count = &esdo->rel_count;
- rel_count2 = &esdo->rel_count2;
- }
- else
- {
- rel_count = &esdo->rel_count2;
- rel_count2 = &esdo->rel_count;
- }
-
- *rel_count += NUM_SHDR_ENTRIES (& esdi->rel_hdr);
- if (esdi->rel_hdr2)
- *rel_count2 += NUM_SHDR_ENTRIES (esdi->rel_hdr2);
- output_section->flags |= SEC_RELOC;
- }
- }
-
/* That created the reloc sections. Set their sizes, and assign
them file positions, and allocate some buffers. */
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0)
{
- if (!elf_link_size_reloc_section (abfd,
- &elf_section_data (o)->rel_hdr,
- o))
+ if (!(_bfd_elf_link_size_reloc_section
+ (abfd, &elf_section_data (o)->rel_hdr, o)))
goto error_return;
if (elf_section_data (o)->rel_hdr2
- && !elf_link_size_reloc_section (abfd,
- elf_section_data (o)->rel_hdr2,
- o))
+ && !(_bfd_elf_link_size_reloc_section
+ (abfd, elf_section_data (o)->rel_hdr2, o)))
goto error_return;
}
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* sh_name is set in prep_headers. */
symtab_hdr->sh_type = SHT_SYMTAB;
- symtab_hdr->sh_flags = 0;
- symtab_hdr->sh_addr = 0;
- symtab_hdr->sh_size = 0;
+ /* sh_flags, sh_addr and sh_size all start off zero. */
symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
/* sh_link is set in assign_section_numbers. */
/* sh_info is set below. */
/* sh_offset is set just below. */
- symtab_hdr->sh_addralign = bed->s->file_align;
+ symtab_hdr->sh_addralign = 1 << bed->s->log_file_align;
off = elf_tdata (abfd)->next_file_pos;
- off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, true);
+ off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE);
/* Note that at this point elf_tdata (abfd)->next_file_pos is
incorrect. We do not yet know the size of the .symtab section.
goto error_return;
if (elf_numsections (abfd) > SHN_LORESERVE)
{
- amt = finfo.symbuf_size;
+ /* Wild guess at number of output symbols. realloc'd as needed. */
+ amt = 2 * max_sym_count + elf_numsections (abfd) + 1000;
+ finfo.shndxbuf_size = amt;
amt *= sizeof (Elf_External_Sym_Shndx);
- finfo.symshndxbuf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
+ finfo.symshndxbuf = (Elf_External_Sym_Shndx *) bfd_zmalloc (amt);
if (finfo.symshndxbuf == NULL)
goto error_return;
}
if (o != NULL)
o->target_index = bfd_get_symcount (abfd);
elfsym.st_shndx = i;
- if (info->relocateable || o == NULL)
+ if (info->relocatable || o == NULL)
elfsym.st_value = 0;
else
elfsym.st_value = o->vma;
if (! elf_link_output_sym (&finfo, (const char *) NULL,
&elfsym, o))
goto error_return;
- if (i == SHN_LORESERVE)
+ if (i == SHN_LORESERVE - 1)
i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
}
}
goto error_return;
}
+ if (finfo.first_tls_sec)
+ {
+ unsigned int align = 0;
+ bfd_vma base = finfo.first_tls_sec->vma, end = 0;
+ asection *sec;
+
+ for (sec = finfo.first_tls_sec;
+ sec && (sec->flags & SEC_THREAD_LOCAL);
+ sec = sec->next)
+ {
+ bfd_vma size = sec->_raw_size;
+
+ if (bfd_get_section_alignment (abfd, sec) > align)
+ align = bfd_get_section_alignment (abfd, sec);
+ if (sec->_raw_size == 0 && (sec->flags & SEC_HAS_CONTENTS) == 0)
+ {
+ struct bfd_link_order *o;
+
+ size = 0;
+ for (o = sec->link_order_head; o != NULL; o = o->next)
+ if (size < o->offset + o->size)
+ size = o->offset + o->size;
+ }
+ end = sec->vma + size;
+ }
+ elf_hash_table (info)->tls_segment
+ = bfd_zalloc (abfd, sizeof (struct elf_link_tls_segment));
+ if (elf_hash_table (info)->tls_segment == NULL)
+ goto error_return;
+ elf_hash_table (info)->tls_segment->start = base;
+ elf_hash_table (info)->tls_segment->size = end - base;
+ elf_hash_table (info)->tls_segment->align = align;
+ }
+
/* Since ELF permits relocations to be against local symbols, we
must have the local symbols available when we do the relocations.
Since we would rather only read the local symbols once, and we
Unfortunately, there is no way to know the total number of local
symbols until we have seen all of them, and the local symbol
indices precede the global symbol indices. This means that when
- we are generating relocateable output, and we see a reloc against
+ we are generating relocatable output, and we see a reloc against
a global symbol, we can not know the symbol index until we have
finished examining all the local symbols to see which ones we are
going to output. To deal with this, we keep the relocations in
memory, and don't output them until the end of the link. This is
an unfortunate waste of memory, but I don't see a good way around
- it. Fortunately, it only happens when performing a relocateable
+ it. Fortunately, it only happens when performing a relocatable
link, which is not the common case. FIXME: If keep_memory is set
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)
- sub->output_has_begun = false;
+ sub->output_has_begun = FALSE;
for (o = abfd->sections; o != NULL; o = o->next)
{
for (p = o->link_order_head; p != NULL; p = p->next)
if (p->type == bfd_indirect_link_order
&& (bfd_get_flavour ((sub = p->u.indirect.section->owner))
== bfd_target_elf_flavour)
- && (sub->arch_info->bits_per_word
- == abfd->arch_info->bits_per_word))
+ && elf_elfheader (sub)->e_ident[EI_CLASS] == bed->s->elfclass)
{
if (! sub->output_has_begun)
{
if (! elf_link_input_bfd (&finfo, sub))
goto error_return;
- sub->output_has_begun = true;
+ sub->output_has_begun = TRUE;
}
}
else if (p->type == bfd_section_reloc_link_order
prior to any global symbols. FIXME: We should only do this if
some global symbols were, in fact, converted to become local.
FIXME: Will this work correctly with the Irix 5 linker? */
- eoinfo.failed = false;
+ eoinfo.failed = FALSE;
eoinfo.finfo = &finfo;
- eoinfo.localsyms = true;
+ eoinfo.localsyms = TRUE;
elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
(PTR) &eoinfo);
if (eoinfo.failed)
- return false;
+ return FALSE;
/* That wrote out all the local symbols. Finish up the symbol table
with the global symbols. Even if we want to strip everything we
sym = e->isym;
if (e->isym.st_shndx != SHN_UNDEF
- && (e->isym.st_shndx < SHN_LORESERVE
- || e->isym.st_shndx > SHN_HIRESERVE))
+ && (e->isym.st_shndx < SHN_LORESERVE
+ || e->isym.st_shndx > SHN_HIRESERVE))
{
s = bfd_section_from_elf_index (e->input_bfd,
e->isym.st_shndx);
}
/* We get the global symbols from the hash table. */
- eoinfo.failed = false;
- eoinfo.localsyms = false;
+ eoinfo.failed = FALSE;
+ eoinfo.localsyms = FALSE;
eoinfo.finfo = &finfo;
elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
(PTR) &eoinfo);
if (eoinfo.failed)
- return false;
+ return FALSE;
/* If backend needs to output some symbols not present in the hash
table, do it now. */
if (bed->elf_backend_output_arch_syms)
{
- typedef boolean (*out_sym_func) PARAMS ((PTR, const char *,
- Elf_Internal_Sym *,
- asection *));
+ typedef bfd_boolean (*out_sym_func)
+ PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *));
if (! ((*bed->elf_backend_output_arch_syms)
(abfd, info, (PTR) &finfo, (out_sym_func) elf_link_output_sym)))
- return false;
+ return FALSE;
}
/* Flush all symbols to the file. */
if (! elf_link_flush_output_syms (&finfo))
- return false;
+ 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)
+ {
+ 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;
+
+ 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 ((PTR) finfo.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_offset is set just below. */
symstrtab_hdr->sh_addralign = 1;
- off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, true);
+ off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, TRUE);
elf_tdata (abfd)->next_file_pos = off;
if (bfd_get_symcount (abfd) > 0)
{
if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
- return false;
+ return FALSE;
}
/* Adjust the relocs to have the correct symbol indices. */
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (elf_hash_table (info), name,
- false, false, true);
+ FALSE, FALSE, TRUE);
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
name = ".fini_array";
get_size:
o = bfd_get_section_by_name (abfd, name);
- BFD_ASSERT (o != NULL);
+ if (o == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: could not find output section %s"),
+ bfd_get_filename (abfd), name);
+ goto error_return;
+ }
if (o->_raw_size == 0)
(*_bfd_error_handler)
(_("warning: %s section has zero size"), name);
name = ".gnu.version";
get_vma:
o = bfd_get_section_by_name (abfd, name);
- BFD_ASSERT (o != NULL);
+ if (o == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: could not find output section %s"),
+ bfd_get_filename (abfd), name);
+ goto error_return;
+ }
dyn.d_un.d_ptr = o->vma;
elf_swap_dyn_out (dynobj, &dyn, dyncon);
break;
if ((o->flags & SEC_LINKER_CREATED) == 0)
{
/* At this point, we are only interested in sections
- created by elf_link_create_dynamic_sections. */
+ created by _bfd_elf_link_create_dynamic_sections. */
continue;
}
if ((elf_section_data (o->output_section)->this_hdr.sh_type
}
}
+ if (info->relocatable)
+ {
+ bfd_boolean failed = FALSE;
+
+ bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
+ if (failed)
+ goto error_return;
+ }
+
/* If we have optimized stabs strings, output them. */
if (elf_hash_table (info)->stab_info != NULL)
{
goto error_return;
}
- if (info->eh_frame_hdr && elf_hash_table (info)->dynobj)
+ if (info->eh_frame_hdr)
{
- o = bfd_get_section_by_name (elf_hash_table (info)->dynobj,
- ".eh_frame_hdr");
- if (o
- && (elf_section_data (o)->sec_info_type
- == ELF_INFO_TYPE_EH_FRAME_HDR))
- {
- if (! _bfd_elf_write_section_eh_frame_hdr (abfd, o))
- goto error_return;
- }
+ if (! _bfd_elf_write_section_eh_frame_hdr (abfd, info))
+ goto error_return;
}
if (finfo.symstrtab != NULL)
if (finfo.symbuf != NULL)
free (finfo.symbuf);
if (finfo.symshndxbuf != NULL)
- free (finfo.symbuf);
+ free (finfo.symshndxbuf);
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0
free (elf_section_data (o)->rel_hashes);
}
- elf_tdata (abfd)->linker = true;
+ elf_tdata (abfd)->linker = TRUE;
- return true;
+ return TRUE;
error_return:
if (finfo.symstrtab != NULL)
if (finfo.symbuf != NULL)
free (finfo.symbuf);
if (finfo.symshndxbuf != NULL)
- free (finfo.symbuf);
+ free (finfo.symshndxbuf);
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0
free (elf_section_data (o)->rel_hashes);
}
- return false;
+ return FALSE;
}
/* Add a symbol to the output symbol table. */
-static boolean
+static bfd_boolean
elf_link_output_sym (finfo, name, elfsym, input_sec)
struct elf_final_link_info *finfo;
const char *name;
{
Elf_External_Sym *dest;
Elf_External_Sym_Shndx *destshndx;
-
- boolean (*output_symbol_hook) PARAMS ((bfd *,
- struct bfd_link_info *info,
- const char *,
- Elf_Internal_Sym *,
- asection *));
+ bfd_boolean (*output_symbol_hook)
+ PARAMS ((bfd *, struct bfd_link_info *info, const char *,
+ Elf_Internal_Sym *, asection *));
output_symbol_hook = get_elf_backend_data (finfo->output_bfd)->
elf_backend_link_output_symbol_hook;
{
if (! ((*output_symbol_hook)
(finfo->output_bfd, finfo->info, name, elfsym, input_sec)))
- return false;
+ return FALSE;
}
if (name == (const char *) NULL || *name == '\0')
else
{
elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab,
- name, true, false);
+ name, TRUE, FALSE);
if (elfsym->st_name == (unsigned long) -1)
- return false;
+ return FALSE;
}
if (finfo->symbuf_count >= finfo->symbuf_size)
{
if (! elf_link_flush_output_syms (finfo))
- return false;
+ return FALSE;
+ }
+
+ dest = finfo->symbuf + finfo->symbuf_count;
+ destshndx = finfo->symshndxbuf;
+ if (destshndx != NULL)
+ {
+ if (bfd_get_symcount (finfo->output_bfd) >= finfo->shndxbuf_size)
+ {
+ bfd_size_type amt;
+
+ amt = finfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx);
+ finfo->symshndxbuf = destshndx = bfd_realloc (destshndx, amt * 2);
+ if (destshndx == NULL)
+ return FALSE;
+ memset ((char *) destshndx + amt, 0, amt);
+ finfo->shndxbuf_size *= 2;
+ }
+ destshndx += bfd_get_symcount (finfo->output_bfd);
}
- dest = finfo->symbuf + finfo->symbuf_count;
- destshndx = finfo->symshndxbuf;
- if (destshndx != NULL)
- destshndx += finfo->symbuf_count;
elf_swap_symbol_out (finfo->output_bfd, elfsym, (PTR) dest, (PTR) destshndx);
- ++finfo->symbuf_count;
+ finfo->symbuf_count += 1;
+ bfd_get_symcount (finfo->output_bfd) += 1;
- ++ bfd_get_symcount (finfo->output_bfd);
-
- return true;
+ return TRUE;
}
/* Flush the output symbols to the file. */
-static boolean
+static bfd_boolean
elf_link_flush_output_syms (finfo)
struct elf_final_link_info *finfo;
{
amt = finfo->symbuf_count * sizeof (Elf_External_Sym);
if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0
|| bfd_bwrite ((PTR) finfo->symbuf, amt, finfo->output_bfd) != amt)
- return false;
+ return FALSE;
hdr->sh_size += amt;
-
- if (finfo->symshndxbuf != NULL)
- {
- hdr = &elf_tdata (finfo->output_bfd)->symtab_shndx_hdr;
- pos = hdr->sh_offset + hdr->sh_size;
- amt = finfo->symbuf_count * sizeof (Elf_External_Sym_Shndx);
- if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0
- || (bfd_bwrite ((PTR) finfo->symshndxbuf, amt, finfo->output_bfd)
- != amt))
- return false;
-
- hdr->sh_size += amt;
- }
-
finfo->symbuf_count = 0;
}
- return true;
+ return TRUE;
}
-/* Adjust all external symbols pointing into SEC_MERGE sections
- to reflect the object merging within the sections. */
+/* For DSOs loaded in via a DT_NEEDED entry, emulate ld.so in
+ allowing an unsatisfied unversioned symbol in the DSO to match a
+ versioned symbol that would normally require an explicit version.
+ We also handle the case that a DSO references a hidden symbol
+ which may be satisfied by a versioned symbol in another DSO. */
-static boolean
-elf_link_sec_merge_syms (h, data)
+static bfd_boolean
+elf_link_check_versioned_symbol (info, h)
+ struct bfd_link_info *info;
struct elf_link_hash_entry *h;
- PTR data;
{
- asection *sec;
+ bfd *abfd;
+ struct elf_link_loaded_list *loaded;
+
+ if (info->hash->creator->flavour != bfd_target_elf_flavour)
+ return FALSE;
+
+ switch (h->root.type)
+ {
+ default:
+ abfd = NULL;
+ break;
+
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_undefweak:
+ abfd = h->root.u.undef.abfd;
+ if ((abfd->flags & DYNAMIC) == 0 || elf_dt_soname (abfd) == NULL)
+ return FALSE;
+ break;
+
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ abfd = h->root.u.def.section->owner;
+ break;
+
+ case bfd_link_hash_common:
+ abfd = h->root.u.c.p->section->owner;
+ break;
+ }
+ BFD_ASSERT (abfd != NULL);
- if ((h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && ((sec = h->root.u.def.section)->flags & SEC_MERGE)
- && elf_section_data (sec)->sec_info_type == ELF_INFO_TYPE_MERGE)
+ for (loaded = elf_hash_table (info)->loaded;
+ loaded != NULL;
+ loaded = loaded->next)
{
- bfd *output_bfd = (bfd *) data;
+ bfd *input;
+ Elf_Internal_Shdr *hdr;
+ bfd_size_type symcount;
+ bfd_size_type extsymcount;
+ bfd_size_type extsymoff;
+ Elf_Internal_Shdr *versymhdr;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
+ Elf_Internal_Sym *isymbuf;
+ Elf_External_Versym *ever;
+ Elf_External_Versym *extversym;
+
+ input = loaded->abfd;
+
+ /* We check each DSO for a possible hidden versioned definition. */
+ if (input == abfd
+ || (input->flags & DYNAMIC) == 0
+ || elf_dynversym (input) == 0)
+ continue;
+
+ hdr = &elf_tdata (input)->dynsymtab_hdr;
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+ if (elf_bad_symtab (input))
+ {
+ extsymcount = symcount;
+ extsymoff = 0;
+ }
+ else
+ {
+ extsymcount = symcount - hdr->sh_info;
+ extsymoff = hdr->sh_info;
+ }
+
+ if (extsymcount == 0)
+ continue;
+
+ isymbuf = bfd_elf_get_elf_syms (input, hdr, extsymcount, extsymoff,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ return FALSE;
+
+ /* Read in any version definitions. */
+ versymhdr = &elf_tdata (input)->dynversym_hdr;
+ extversym = (Elf_External_Versym *) bfd_malloc (versymhdr->sh_size);
+ if (extversym == NULL)
+ goto error_ret;
+
+ if (bfd_seek (input, versymhdr->sh_offset, SEEK_SET) != 0
+ || (bfd_bread ((PTR) extversym, versymhdr->sh_size, input)
+ != versymhdr->sh_size))
+ {
+ free (extversym);
+ error_ret:
+ free (isymbuf);
+ return FALSE;
+ }
+
+ ever = extversym + extsymoff;
+ isymend = isymbuf + extsymcount;
+ for (isym = isymbuf; isym < isymend; isym++, ever++)
+ {
+ const char *name;
+ Elf_Internal_Versym iver;
+ unsigned short version_index;
+
+ if (ELF_ST_BIND (isym->st_info) == STB_LOCAL
+ || isym->st_shndx == SHN_UNDEF)
+ continue;
+
+ name = bfd_elf_string_from_elf_section (input,
+ hdr->sh_link,
+ isym->st_name);
+ if (strcmp (name, h->root.root.string) != 0)
+ continue;
+
+ _bfd_elf_swap_versym_in (input, ever, &iver);
+
+ if ((iver.vs_vers & VERSYM_HIDDEN) == 0)
+ {
+ /* If we have a non-hidden versioned sym, then it should
+ have provided a definition for the undefined sym. */
+ abort ();
+ }
+
+ version_index = iver.vs_vers & VERSYM_VERSION;
+ if (version_index == 1 || version_index == 2)
+ {
+ /* This is the base or first version. We can use it. */
+ free (extversym);
+ free (isymbuf);
+ return TRUE;
+ }
+ }
- h->root.u.def.value =
- _bfd_merged_section_offset (output_bfd,
- &h->root.u.def.section,
- elf_section_data (sec)->sec_info,
- h->root.u.def.value, (bfd_vma) 0);
+ free (extversym);
+ free (isymbuf);
}
- return true;
+ return FALSE;
}
/* Add an external symbol to the symbol table. This is called from
script. The second time we output the symbols that are still
global symbols. */
-static boolean
+static bfd_boolean
elf_link_output_extsym (h, data)
struct elf_link_hash_entry *h;
PTR data;
{
struct elf_outext_info *eoinfo = (struct elf_outext_info *) data;
struct elf_final_link_info *finfo = eoinfo->finfo;
- boolean strip;
+ bfd_boolean strip;
Elf_Internal_Sym sym;
asection *input_sec;
+ if (h->root.type == bfd_link_hash_warning)
+ {
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_new)
+ return TRUE;
+ }
+
/* Decide whether to output this symbol in this pass. */
if (eoinfo->localsyms)
{
if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
- return true;
+ return TRUE;
}
else
{
if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
- return true;
+ return TRUE;
}
/* If we are not creating a shared library, and this symbol is
program is run. We don't have to worry about symbols that are
referenced by regular files, because we will already have issued
warnings for them. */
- if (! finfo->info->relocateable
- && ! finfo->info->allow_shlib_undefined
- && ! finfo->info->shared
+ if (! finfo->info->relocatable
+ && (finfo->info->executable
+ || ! finfo->info->allow_shlib_undefined)
&& h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
+ && ! elf_link_check_versioned_symbol (finfo->info, h))
{
if (! ((*finfo->info->callbacks->undefined_symbol)
(finfo->info, h->root.root.string, h->root.u.undef.abfd,
- (asection *) NULL, (bfd_vma) 0, true)))
+ (asection *) NULL, (bfd_vma) 0, TRUE)))
{
- eoinfo->failed = true;
- return false;
+ eoinfo->failed = TRUE;
+ return FALSE;
}
}
+ /* We should also warn if a forced local symbol is referenced from
+ shared libraries. */
+ if (! finfo->info->relocatable
+ && (! finfo->info->shared || ! finfo->info->allow_shlib_undefined)
+ && (h->elf_link_hash_flags
+ & (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC
+ | ELF_LINK_DYNAMIC_DEF | ELF_LINK_DYNAMIC_WEAK))
+ == (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC)
+ && ! elf_link_check_versioned_symbol (finfo->info, h))
+ {
+ (*_bfd_error_handler)
+ (_("%s: %s symbol `%s' in %s is referenced by DSO"),
+ bfd_get_filename (finfo->output_bfd),
+ ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
+ ? "internal"
+ : ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
+ ? "hidden" : "local",
+ h->root.root.string,
+ bfd_archive_filename (h->root.u.def.section->owner));
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+
/* We don't want to output symbols that have never been mentioned by
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. */
if (h->indx == -2)
- strip = false;
+ strip = FALSE;
else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|| (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
- strip = true;
- else if (finfo->info->strip == strip_all
- || (finfo->info->strip == strip_some
- && bfd_hash_lookup (finfo->info->keep_hash,
- h->root.root.string,
- false, false) == NULL))
- strip = true;
+ strip = TRUE;
+ else if (finfo->info->strip == strip_all)
+ strip = TRUE;
+ else if (finfo->info->strip == strip_some
+ && bfd_hash_lookup (finfo->info->keep_hash,
+ h->root.root.string, FALSE, FALSE) == NULL)
+ strip = TRUE;
+ else if (finfo->info->strip_discarded
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && elf_discarded_section (h->root.u.def.section))
+ strip = TRUE;
else
- strip = false;
+ 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. */
if (strip
&& h->dynindx == -1
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
- return true;
+ return TRUE;
sym.st_value = 0;
sym.st_size = h->size;
{
default:
case bfd_link_hash_new:
+ case bfd_link_hash_warning:
abort ();
- return false;
+ return FALSE;
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
bfd_get_filename (finfo->output_bfd),
input_sec->output_section->name,
input_sec->name);
- eoinfo->failed = true;
- return false;
+ eoinfo->failed = TRUE;
+ return FALSE;
}
- /* ELF symbols in relocateable files are section relative,
- but in nonrelocateable files they are virtual
+ /* ELF symbols in relocatable files are section relative,
+ but in nonrelocatable files they are virtual
addresses. */
sym.st_value = h->root.u.def.value + input_sec->output_offset;
- if (! finfo->info->relocateable)
- sym.st_value += input_sec->output_section->vma;
+ if (! finfo->info->relocatable)
+ {
+ sym.st_value += input_sec->output_section->vma;
+ if (h->type == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS segment
+ base. */
+ BFD_ASSERT (finfo->first_tls_sec != NULL);
+ sym.st_value -= finfo->first_tls_sec->vma;
+ }
+ }
}
else
{
foo is used with no version, then we add an indirect symbol
foo which points to foo@@GNU_1.2. We ignore these symbols,
since the indirected symbol is already in the hash table. */
- return true;
-
- case bfd_link_hash_warning:
- /* We can't represent these symbols in ELF, although a warning
- symbol may have come from a .gnu.warning.SYMBOL section. We
- just put the target symbol in the hash table. If the target
- symbol does not really exist, don't do anything. */
- if (h->root.u.i.link->type == bfd_link_hash_new)
- return true;
- return (elf_link_output_extsym
- ((struct elf_link_hash_entry *) h->root.u.i.link, data));
+ return TRUE;
}
/* Give the processor backend a chance to tweak the symbol value,
forced local syms when non-shared is due to a historical quirk. */
if ((h->dynindx != -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
- && (finfo->info->shared
+ && ((finfo->info->shared
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
&& elf_hash_table (finfo->info)->dynamic_sections_created)
{
if (! ((*bed->elf_backend_finish_dynamic_symbol)
(finfo->output_bfd, finfo->info, h, &sym)))
{
- eoinfo->failed = true;
- return false;
+ eoinfo->failed = TRUE;
+ return FALSE;
}
}
sym.st_info = ELF_ST_INFO (bindtype, ELF_ST_TYPE (sym.st_info));
}
- /* If a symbol is not defined locally, we clear the visibility
- field. */
- if (! finfo->info->relocateable
+ /* If a non-weak symbol with non-default visibility is not defined
+ locally, it is a fatal error. */
+ if (! finfo->info->relocatable
+ && ELF_ST_VISIBILITY (sym.st_other) != STV_DEFAULT
+ && ELF_ST_BIND (sym.st_info) != STB_WEAK
+ && h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- sym.st_other ^= ELF_ST_VISIBILITY (sym.st_other);
+ {
+ (*_bfd_error_handler)
+ (_("%s: %s symbol `%s' isn't defined"),
+ bfd_get_filename (finfo->output_bfd),
+ ELF_ST_VISIBILITY (sym.st_other) == STV_PROTECTED
+ ? "protected"
+ : ELF_ST_VISIBILITY (sym.st_other) == STV_INTERNAL
+ ? "internal" : "hidden",
+ h->root.root.string);
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
/* If this symbol should be put in the .dynsym section, then put it
- there now. We have already know the symbol index. We also fill
- in the entry in the .hash section. */
+ there now. We already know the symbol index. We also fill in
+ the entry in the .hash section. */
if (h->dynindx != -1
&& elf_hash_table (finfo->info)->dynamic_sections_created)
{
/* If we're stripping it, then it was just a dynamic symbol, and
there's nothing else to do. */
- if (strip)
- return true;
+ if (strip || (input_sec->flags & SEC_EXCLUDE) != 0)
+ return TRUE;
h->indx = bfd_get_symcount (finfo->output_bfd);
if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec))
{
- eoinfo->failed = true;
- return false;
- }
-
- return true;
-}
-
-/* Copy the relocations indicated by the INTERNAL_RELOCS (which
- originated from the section given by INPUT_REL_HDR) to the
- OUTPUT_BFD. */
-
-static void
-elf_link_output_relocs (output_bfd, input_section, input_rel_hdr,
- internal_relocs)
- bfd *output_bfd;
- asection *input_section;
- Elf_Internal_Shdr *input_rel_hdr;
- Elf_Internal_Rela *internal_relocs;
-{
- Elf_Internal_Rela *irela;
- Elf_Internal_Rela *irelaend;
- Elf_Internal_Shdr *output_rel_hdr;
- asection *output_section;
- unsigned int *rel_countp = NULL;
- struct elf_backend_data *bed;
- bfd_size_type amt;
-
- output_section = input_section->output_section;
- output_rel_hdr = NULL;
-
- if (elf_section_data (output_section)->rel_hdr.sh_entsize
- == input_rel_hdr->sh_entsize)
- {
- output_rel_hdr = &elf_section_data (output_section)->rel_hdr;
- rel_countp = &elf_section_data (output_section)->rel_count;
- }
- else if (elf_section_data (output_section)->rel_hdr2
- && (elf_section_data (output_section)->rel_hdr2->sh_entsize
- == input_rel_hdr->sh_entsize))
- {
- output_rel_hdr = elf_section_data (output_section)->rel_hdr2;
- rel_countp = &elf_section_data (output_section)->rel_count2;
- }
-
- BFD_ASSERT (output_rel_hdr != NULL);
-
- bed = get_elf_backend_data (output_bfd);
- irela = internal_relocs;
- irelaend = irela + NUM_SHDR_ENTRIES (input_rel_hdr)
- * bed->s->int_rels_per_ext_rel;
-
- if (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
- {
- Elf_External_Rel *erel;
- Elf_Internal_Rel *irel;
-
- amt = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel);
- irel = (Elf_Internal_Rel *) bfd_zmalloc (amt);
- if (irel == NULL)
- {
- (*_bfd_error_handler) (_("Error: out of memory"));
- abort ();
- }
-
- erel = ((Elf_External_Rel *) output_rel_hdr->contents + *rel_countp);
- for (; irela < irelaend; irela += bed->s->int_rels_per_ext_rel, erel++)
- {
- unsigned int i;
-
- for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
- {
- irel[i].r_offset = irela[i].r_offset;
- irel[i].r_info = irela[i].r_info;
- BFD_ASSERT (irela[i].r_addend == 0);
- }
-
- if (bed->s->swap_reloc_out)
- (*bed->s->swap_reloc_out) (output_bfd, irel, (PTR) erel);
- else
- elf_swap_reloc_out (output_bfd, irel, erel);
- }
-
- free (irel);
- }
- else
- {
- Elf_External_Rela *erela;
-
- BFD_ASSERT (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rela));
-
- erela = ((Elf_External_Rela *) output_rel_hdr->contents + *rel_countp);
- for (; irela < irelaend; irela += bed->s->int_rels_per_ext_rel, erela++)
- if (bed->s->swap_reloca_out)
- (*bed->s->swap_reloca_out) (output_bfd, irela, (PTR) erela);
- else
- elf_swap_reloca_out (output_bfd, irela, erela);
+ eoinfo->failed = TRUE;
+ return FALSE;
}
- /* Bump the counter, so that we know where to add the next set of
- relocations. */
- *rel_countp += NUM_SHDR_ENTRIES (input_rel_hdr);
+ return TRUE;
}
/* Link an input file into the linker output file. This function
This is so that we only have to read the local symbols once, and
don't have to keep them in memory. */
-static boolean
+static bfd_boolean
elf_link_input_bfd (finfo, input_bfd)
struct elf_final_link_info *finfo;
bfd *input_bfd;
{
- boolean (*relocate_section) PARAMS ((bfd *, struct bfd_link_info *,
- bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *,
- Elf_Internal_Sym *, asection **));
+ bfd_boolean (*relocate_section)
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
bfd *output_bfd;
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
size_t locsymcount;
size_t extsymoff;
- Elf_External_Sym *external_syms;
- Elf_External_Sym *esym;
- Elf_External_Sym *esymend;
- Elf_External_Sym_Shndx *shndx_buf;
- Elf_External_Sym_Shndx *shndx;
+ Elf_Internal_Sym *isymbuf;
Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
long *pindex;
asection **ppsection;
asection *o;
struct elf_backend_data *bed;
- boolean emit_relocs;
+ bfd_boolean emit_relocs;
struct elf_link_hash_entry **sym_hashes;
output_bfd = finfo->output_bfd;
we don't want the local symbols, and we don't want the section
contents. */
if ((input_bfd->flags & DYNAMIC) != 0)
- return true;
+ return TRUE;
- emit_relocs = (finfo->info->relocateable
+ emit_relocs = (finfo->info->relocatable
|| finfo->info->emitrelocations
|| bed->elf_backend_emit_relocs);
}
/* Read the local symbols. */
- if (symtab_hdr->contents != NULL)
- external_syms = (Elf_External_Sym *) symtab_hdr->contents;
- else if (locsymcount == 0)
- external_syms = NULL;
- else
- {
- bfd_size_type amt = locsymcount * sizeof (Elf_External_Sym);
- external_syms = finfo->external_syms;
- if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (external_syms, amt, input_bfd) != amt)
- return false;
- }
-
- shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr;
- shndx_buf = NULL;
- if (shndx_hdr->sh_size != 0 && locsymcount != 0)
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL && locsymcount != 0)
{
- bfd_size_type amt = locsymcount * sizeof (Elf_External_Sym_Shndx);
- shndx_buf = finfo->locsym_shndx;
- if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (shndx_buf, amt, input_bfd) != amt)
- return false;
+ isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, locsymcount, 0,
+ finfo->internal_syms,
+ finfo->external_syms,
+ finfo->locsym_shndx);
+ if (isymbuf == NULL)
+ return FALSE;
}
- /* Swap in the local symbols and write out the ones which we know
- are going into the output file. */
- for (esym = external_syms, esymend = esym + locsymcount,
- isym = finfo->internal_syms, pindex = finfo->indices,
- ppsection = finfo->sections, shndx = shndx_buf;
- esym < esymend;
- esym++, isym++, pindex++, ppsection++,
- shndx = (shndx != NULL ? shndx + 1 : NULL))
+ /* Find local symbol sections and adjust values of symbols in
+ SEC_MERGE sections. Write out those local symbols we know are
+ going into the output file. */
+ isymend = isymbuf + locsymcount;
+ for (isym = isymbuf, pindex = finfo->indices, ppsection = finfo->sections;
+ isym < isymend;
+ isym++, pindex++, ppsection++)
{
asection *isec;
const char *name;
Elf_Internal_Sym osym;
- elf_swap_symbol_in (input_bfd, esym, shndx, isym);
*pindex = -1;
if (elf_bad_symtab (input_bfd))
{
isec = section_from_elf_index (input_bfd, isym->st_shndx);
if (isec
- && elf_section_data (isec)->sec_info_type == ELF_INFO_TYPE_MERGE
+ && isec->sec_info_type == ELF_INFO_TYPE_MERGE
&& ELF_ST_TYPE (isym->st_info) != STT_SECTION)
isym->st_value =
_bfd_merged_section_offset (output_bfd, &isec,
*ppsection = isec;
/* Don't output the first, undefined, symbol. */
- if (esym == external_syms)
+ if (ppsection == finfo->sections)
continue;
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
continue;
/* If we are discarding all local symbols, we don't want to
- output this one. If we are generating a relocateable output
+ output this one. If we are generating a relocatable output
file, then some of the local symbols may be required by
relocs; we output them below as we discover that they are
needed. */
if ((isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
&& isec != NULL
&& ((! isec->linker_mark && (isec->flags & SEC_HAS_CONTENTS) != 0)
- || (! finfo->info->relocateable
+ || (! finfo->info->relocatable
&& (isec->flags & SEC_EXCLUDE) != 0)))
continue;
name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link,
isym->st_name);
if (name == NULL)
- return false;
+ return FALSE;
/* See if we are discarding symbols with this name. */
if ((finfo->info->strip == strip_some
- && (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE)
== NULL))
|| (((finfo->info->discard == discard_sec_merge
- && (isec->flags & SEC_MERGE) && ! finfo->info->relocateable)
+ && (isec->flags & SEC_MERGE) && ! finfo->info->relocatable)
|| finfo->info->discard == discard_l)
&& bfd_is_local_label_name (input_bfd, name)))
continue;
osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
isec->output_section);
if (osym.st_shndx == SHN_BAD)
- return false;
+ return FALSE;
*pindex = bfd_get_symcount (output_bfd);
- /* ELF symbols in relocateable files are section relative, but
+ /* ELF symbols in relocatable files are section relative, but
in executable files they are virtual addresses. Note that
this code assumes that all ELF sections have an associated
BFD section with a reasonable value for output_offset; below
output_section. Any special sections must be set up to meet
these requirements. */
osym.st_value += isec->output_offset;
- if (! finfo->info->relocateable)
- osym.st_value += isec->output_section->vma;
+ if (! finfo->info->relocatable)
+ {
+ osym.st_value += isec->output_section->vma;
+ if (ELF_ST_TYPE (osym.st_info) == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS segment base. */
+ BFD_ASSERT (finfo->first_tls_sec != NULL);
+ osym.st_value -= finfo->first_tls_sec->vma;
+ }
+ }
if (! elf_link_output_sym (finfo, name, &osym, isec))
- return false;
+ return FALSE;
}
/* Relocate the contents of each section. */
if ((o->flags & SEC_LINKER_CREATED) != 0)
{
- /* Section was created by elf_link_create_dynamic_sections
+ /* Section was created by _bfd_elf_link_create_dynamic_sections
or somesuch. */
continue;
}
contents = finfo->contents;
if (! bfd_get_section_contents (input_bfd, o, contents,
(file_ptr) 0, o->_raw_size))
- return false;
+ return FALSE;
}
if ((o->flags & SEC_RELOC) != 0)
Elf_Internal_Rela *internal_relocs;
/* Get the swapped relocs. */
- internal_relocs = (NAME(_bfd_elf,link_read_relocs)
- (input_bfd, o, finfo->external_relocs,
- finfo->internal_relocs, false));
+ internal_relocs
+ = _bfd_elf_link_read_relocs (input_bfd, o, finfo->external_relocs,
+ finfo->internal_relocs, FALSE);
if (internal_relocs == NULL
&& o->reloc_count > 0)
- return false;
+ return FALSE;
/* Run through the relocs looking for any against symbols
from discarded sections and section symbols from
removed link-once sections. Complain about relocs
against discarded sections. Zero relocs against removed
- link-once sections. We should really complain if
- anything in the final link tries to use it, but
- DWARF-based exception handling might have an entry in
- .eh_frame to describe a routine in the linkonce section,
- and it turns out to be hard to remove the .eh_frame
- entry too. FIXME. */
- if (!finfo->info->relocateable
- && !elf_section_ignore_discarded_relocs (o))
+ link-once sections. Preserve debug information as much
+ as we can. */
+ if (!elf_section_ignore_discarded_relocs (o))
{
Elf_Internal_Rela *rel, *relend;
for ( ; rel < relend; rel++)
{
unsigned long r_symndx = ELF_R_SYM (rel->r_info);
+ asection *sec;
if (r_symndx >= locsymcount
|| (elf_bad_symtab (input_bfd)
/* Complain if the definition comes from a
discarded section. */
+ sec = h->root.u.def.section;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
- && elf_discarded_section (h->root.u.def.section))
+ && elf_discarded_section (sec))
{
-#if BFD_VERSION_DATE < 20031005
if ((o->flags & SEC_DEBUGGING) != 0)
{
-#if BFD_VERSION_DATE > 20021005
- (*finfo->info->callbacks->warning)
- (finfo->info,
- _("warning: relocation against removed section; zeroing"),
- NULL, input_bfd, o, rel->r_offset);
-#endif
BFD_ASSERT (r_symndx != 0);
- memset (rel, 0, sizeof (*rel));
+ /* Try to preserve debug information. */
+ if ((o->flags & SEC_DEBUGGING) != 0
+ && sec->kept_section != NULL
+ && sec->_raw_size == sec->kept_section->_raw_size)
+ h->root.u.def.section
+ = sec->kept_section;
+ else
+ memset (rel, 0, sizeof (*rel));
}
else
-#endif
- {
- if (! ((*finfo->info->callbacks->undefined_symbol)
- (finfo->info, h->root.root.string,
- input_bfd, o, rel->r_offset,
- true)))
- return false;
- }
+ finfo->info->callbacks->error_handler
+ (LD_DEFINITION_IN_DISCARDED_SECTION,
+ _("%T: discarded in section `%s' from %s\n"),
+ h->root.root.string,
+ h->root.root.string,
+ h->root.u.def.section->name,
+ bfd_archive_filename (h->root.u.def.section->owner));
}
}
else
{
- asection *sec = finfo->sections[r_symndx];
+ sec = finfo->sections[r_symndx];
if (sec != NULL && elf_discarded_section (sec))
{
-#if BFD_VERSION_DATE < 20031005
if ((o->flags & SEC_DEBUGGING) != 0
|| (sec->flags & SEC_LINK_ONCE) != 0)
{
-#if BFD_VERSION_DATE > 20021005
- (*finfo->info->callbacks->warning)
- (finfo->info,
- _("warning: relocation against removed section"),
- NULL, input_bfd, o, rel->r_offset);
-#endif
BFD_ASSERT (r_symndx != 0);
- rel->r_info
- = ELF_R_INFO (0, ELF_R_TYPE (rel->r_info));
- rel->r_addend = 0;
+ /* Try to preserve debug information. */
+ if ((o->flags & SEC_DEBUGGING) != 0
+ && sec->kept_section != NULL
+ && sec->_raw_size == sec->kept_section->_raw_size)
+ finfo->sections[r_symndx]
+ = sec->kept_section;
+ else
+ {
+ rel->r_info
+ = ELF_R_INFO (0, ELF_R_TYPE (rel->r_info));
+ rel->r_addend = 0;
+ }
}
else
-#endif
{
- boolean ok;
- const char *msg
- = _("local symbols in discarded section %s");
- bfd_size_type amt
- = strlen (sec->name) + strlen (msg) - 1;
- char *buf = (char *) bfd_malloc (amt);
-
- if (buf != NULL)
- sprintf (buf, msg, sec->name);
- else
- buf = (char *) sec->name;
- ok = (*finfo->info->callbacks
- ->undefined_symbol) (finfo->info, buf,
- input_bfd, o,
- rel->r_offset,
- true);
- if (buf != sec->name)
+ static int count;
+ int ok;
+ char *buf;
+
+ ok = asprintf (&buf, "local symbol %d",
+ count++);
+ if (ok <= 0)
+ buf = (char *) "local symbol";
+ finfo->info->callbacks->error_handler
+ (LD_DEFINITION_IN_DISCARDED_SECTION,
+ _("%T: discarded in section `%s' from %s\n"),
+ buf, buf, sec->name,
+ bfd_archive_filename (input_bfd));
+ if (ok != -1)
free (buf);
- if (!ok)
- return false;
}
}
}
The back end routine is responsible for adjusting the
section contents as necessary, and (if using Rela relocs
- and generating a relocateable output file) adjusting the
+ and generating a relocatable output file) adjusting the
reloc addend as necessary.
The back end routine does not have to worry about setting
internal symbols, and can access the hash table entries
for the external symbols via elf_sym_hashes (input_bfd).
- When generating relocateable output, the back end routine
+ When generating relocatable output, the back end routine
must handle STB_LOCAL/STT_SECTION symbols specially. The
output symbol is going to be a section symbol
corresponding to the output section, which will require
if (! (*relocate_section) (output_bfd, finfo->info,
input_bfd, o, contents,
internal_relocs,
- finfo->internal_syms,
+ isymbuf,
finfo->sections))
- return false;
+ return FALSE;
if (emit_relocs)
{
Elf_Internal_Rela *irela;
Elf_Internal_Rela *irelaend;
+ bfd_vma last_offset;
struct elf_link_hash_entry **rel_hash;
- Elf_Internal_Shdr *input_rel_hdr;
+ Elf_Internal_Shdr *input_rel_hdr, *input_rel_hdr2;
unsigned int next_erel;
- void (*reloc_emitter) PARAMS ((bfd *, asection *,
- Elf_Internal_Shdr *,
- Elf_Internal_Rela *));
+ bfd_boolean (*reloc_emitter)
+ PARAMS ((bfd *, asection *, Elf_Internal_Shdr *,
+ Elf_Internal_Rela *));
+ bfd_boolean rela_normal;
+
+ input_rel_hdr = &elf_section_data (o)->rel_hdr;
+ rela_normal = (bed->rela_normal
+ && (input_rel_hdr->sh_entsize
+ == sizeof (Elf_External_Rela)));
/* Adjust the reloc addresses and symbol indices. */
rel_hash = (elf_section_data (o->output_section)->rel_hashes
+ elf_section_data (o->output_section)->rel_count
+ elf_section_data (o->output_section)->rel_count2);
+ last_offset = o->output_offset;
+ if (!finfo->info->relocatable)
+ last_offset += o->output_section->vma;
for (next_erel = 0; irela < irelaend; irela++, next_erel++)
{
unsigned long r_symndx;
asection *sec;
+ Elf_Internal_Sym sym;
if (next_erel == bed->s->int_rels_per_ext_rel)
{
next_erel = 0;
}
+ irela->r_offset = _bfd_elf_section_offset (output_bfd,
+ finfo->info, o,
+ irela->r_offset);
+ if (irela->r_offset >= (bfd_vma) -2)
+ {
+ /* This is a reloc for a deleted entry or somesuch.
+ Turn it into an R_*_NONE reloc, at the same
+ offset as the last reloc. elf_eh_frame.c and
+ elf_bfd_discard_info rely on reloc offsets
+ being ordered. */
+ irela->r_offset = last_offset;
+ irela->r_info = 0;
+ irela->r_addend = 0;
+ continue;
+ }
+
irela->r_offset += o->output_offset;
/* Relocs in an executable have to be virtual addresses. */
- if (finfo->info->emitrelocations)
+ if (!finfo->info->relocatable)
irela->r_offset += o->output_section->vma;
- r_symndx = ELF_R_SYM (irela->r_info);
+ last_offset = irela->r_offset;
- if (r_symndx == 0)
+ r_symndx = ELF_R_SYM (irela->r_info);
+ if (r_symndx == STN_UNDEF)
continue;
if (r_symndx >= locsymcount
/* This is a reloc against a local symbol. */
*rel_hash = NULL;
- isym = finfo->internal_syms + r_symndx;
+ sym = isymbuf[r_symndx];
sec = finfo->sections[r_symndx];
- if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ if (ELF_ST_TYPE (sym.st_info) == STT_SECTION)
{
/* I suppose the backend ought to fill in the
section of any STT_SECTION symbol against a
processor specific section. If we have
discarded a section, the output_section will
be the absolute section. */
- if (sec != NULL
- && (bfd_is_abs_section (sec)
- || (sec->output_section != NULL
- && bfd_is_abs_section (sec->output_section))))
+ if (bfd_is_abs_section (sec)
+ || (sec != NULL
+ && bfd_is_abs_section (sec->output_section)))
r_symndx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
else
{
r_symndx = sec->output_section->target_index;
BFD_ASSERT (r_symndx != 0);
}
+
+ /* Adjust the addend according to where the
+ section winds up in the output section. */
+ if (rela_normal)
+ irela->r_addend += sec->output_offset;
}
else
{
{
/* You can't do ld -r -s. */
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ return FALSE;
}
/* This symbol was skipped earlier, but
must output it now. */
shlink = symtab_hdr->sh_link;
name = (bfd_elf_string_from_elf_section
- (input_bfd, shlink, isym->st_name));
+ (input_bfd, shlink, sym.st_name));
if (name == NULL)
- return false;
+ return FALSE;
osec = sec->output_section;
- isym->st_shndx =
+ sym.st_shndx =
_bfd_elf_section_from_bfd_section (output_bfd,
osec);
- if (isym->st_shndx == SHN_BAD)
- return false;
+ if (sym.st_shndx == SHN_BAD)
+ return FALSE;
- isym->st_value += sec->output_offset;
- if (! finfo->info->relocateable)
- isym->st_value += osec->vma;
+ sym.st_value += sec->output_offset;
+ if (! finfo->info->relocatable)
+ {
+ sym.st_value += osec->vma;
+ if (ELF_ST_TYPE (sym.st_info) == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS
+ segment base. */
+ BFD_ASSERT (finfo->first_tls_sec != NULL);
+ sym.st_value -= finfo->first_tls_sec->vma;
+ }
+ }
finfo->indices[r_symndx]
= bfd_get_symcount (output_bfd);
- if (! elf_link_output_sym (finfo, name, isym, sec))
- return false;
+ if (! elf_link_output_sym (finfo, name, &sym, sec))
+ return FALSE;
}
r_symndx = finfo->indices[r_symndx];
/* Swap out the relocs. */
if (bed->elf_backend_emit_relocs
- && !(finfo->info->relocateable
+ && !(finfo->info->relocatable
|| finfo->info->emitrelocations))
reloc_emitter = bed->elf_backend_emit_relocs;
else
- reloc_emitter = elf_link_output_relocs;
+ reloc_emitter = _bfd_elf_link_output_relocs;
- input_rel_hdr = &elf_section_data (o)->rel_hdr;
- (*reloc_emitter) (output_bfd, o, input_rel_hdr, internal_relocs);
+ if (input_rel_hdr->sh_size != 0
+ && ! (*reloc_emitter) (output_bfd, o, input_rel_hdr,
+ internal_relocs))
+ return FALSE;
- input_rel_hdr = elf_section_data (o)->rel_hdr2;
- if (input_rel_hdr)
+ input_rel_hdr2 = elf_section_data (o)->rel_hdr2;
+ if (input_rel_hdr2 && input_rel_hdr2->sh_size != 0)
{
internal_relocs += (NUM_SHDR_ENTRIES (input_rel_hdr)
* bed->s->int_rels_per_ext_rel);
- reloc_emitter (output_bfd, o, input_rel_hdr, internal_relocs);
+ if (! (*reloc_emitter) (output_bfd, o, input_rel_hdr2,
+ internal_relocs))
+ return FALSE;
}
-
}
}
{
/* Section written out. */
}
- else switch (elf_section_data (o)->sec_info_type)
+ else switch (o->sec_info_type)
{
case ELF_INFO_TYPE_STABS:
if (! (_bfd_write_section_stabs
(output_bfd,
&elf_hash_table (finfo->info)->stab_info,
o, &elf_section_data (o)->sec_info, contents)))
- return false;
+ return FALSE;
break;
case ELF_INFO_TYPE_MERGE:
- if (! (_bfd_write_merged_section
- (output_bfd, o, elf_section_data (o)->sec_info)))
- return false;
+ if (! _bfd_write_merged_section (output_bfd, o,
+ elf_section_data (o)->sec_info))
+ return FALSE;
break;
case ELF_INFO_TYPE_EH_FRAME:
{
- asection *ehdrsec;
-
- ehdrsec
- = bfd_get_section_by_name (elf_hash_table (finfo->info)->dynobj,
- ".eh_frame_hdr");
- if (! (_bfd_elf_write_section_eh_frame (output_bfd, o, ehdrsec,
- contents)))
- return false;
+ if (! _bfd_elf_write_section_eh_frame (output_bfd, finfo->info,
+ o, contents))
+ return FALSE;
}
break;
default:
contents,
(file_ptr) o->output_offset,
sec_size))
- return false;
+ return FALSE;
}
break;
}
}
- return true;
+ return TRUE;
}
/* Generate a reloc when linking an ELF file. This is a reloc
is used to build constructor and destructor tables when linking
with -Ur. */
-static boolean
+static bfd_boolean
elf_reloc_link_order (output_bfd, info, output_section, link_order)
bfd *output_bfd;
struct bfd_link_info *info;
struct elf_link_hash_entry **rel_hash_ptr;
Elf_Internal_Shdr *rel_hdr;
struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+ Elf_Internal_Rela irel[MAX_INT_RELS_PER_EXT_REL];
+ bfd_byte *erel;
+ unsigned int i;
howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
if (howto == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
addend = link_order->u.reloc.p->addend;
h = ((struct elf_link_hash_entry *)
bfd_wrapped_link_hash_lookup (output_bfd, info,
link_order->u.reloc.p->u.name,
- false, false, true));
+ FALSE, FALSE, TRUE));
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
if (! ((*info->callbacks->unattached_reloc)
(info, link_order->u.reloc.p->u.name, (bfd *) NULL,
(asection *) NULL, (bfd_vma) 0)))
- return false;
+ return FALSE;
indx = 0;
}
}
bfd_size_type size;
bfd_reloc_status_type rstat;
bfd_byte *buf;
- boolean ok;
+ bfd_boolean ok;
const char *sym_name;
size = bfd_get_reloc_size (howto);
buf = (bfd_byte *) bfd_zmalloc (size);
if (buf == (bfd_byte *) NULL)
- return false;
+ return FALSE;
rstat = _bfd_relocate_contents (howto, output_bfd, (bfd_vma) addend, buf);
switch (rstat)
{
(bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
{
free (buf);
- return false;
+ return FALSE;
}
break;
}
(file_ptr) link_order->offset, size);
free (buf);
if (! ok)
- return false;
+ return FALSE;
}
/* The address of a reloc is relative to the section in a
- relocateable file, and is a virtual address in an executable
+ relocatable file, and is a virtual address in an executable
file. */
offset = link_order->offset;
- if (! info->relocateable)
+ if (! info->relocatable)
offset += output_section->vma;
- rel_hdr = &elf_section_data (output_section)->rel_hdr;
+ for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
+ {
+ irel[i].r_offset = offset;
+ irel[i].r_info = 0;
+ irel[i].r_addend = 0;
+ }
+ irel[0].r_info = ELF_R_INFO (indx, howto->type);
+ rel_hdr = &elf_section_data (output_section)->rel_hdr;
+ erel = rel_hdr->contents;
if (rel_hdr->sh_type == SHT_REL)
{
- bfd_size_type size;
- Elf_Internal_Rel *irel;
- Elf_External_Rel *erel;
- unsigned int i;
-
- size = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel);
- irel = (Elf_Internal_Rel *) bfd_zmalloc (size);
- if (irel == NULL)
- return false;
-
- for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
- irel[i].r_offset = offset;
- irel[0].r_info = ELF_R_INFO (indx, howto->type);
-
- erel = ((Elf_External_Rel *) rel_hdr->contents
- + elf_section_data (output_section)->rel_count);
-
- if (bed->s->swap_reloc_out)
- (*bed->s->swap_reloc_out) (output_bfd, irel, (bfd_byte *) erel);
- else
- elf_swap_reloc_out (output_bfd, irel, erel);
-
- free (irel);
+ erel += (elf_section_data (output_section)->rel_count
+ * sizeof (Elf_External_Rel));
+ (*bed->s->swap_reloc_out) (output_bfd, irel, erel);
}
else
{
- bfd_size_type size;
- Elf_Internal_Rela *irela;
- Elf_External_Rela *erela;
- unsigned int i;
-
- size = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela);
- irela = (Elf_Internal_Rela *) bfd_zmalloc (size);
- if (irela == NULL)
- return false;
-
- for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
- irela[i].r_offset = offset;
- irela[0].r_info = ELF_R_INFO (indx, howto->type);
- irela[0].r_addend = addend;
-
- erela = ((Elf_External_Rela *) rel_hdr->contents
- + elf_section_data (output_section)->rel_count);
-
- if (bed->s->swap_reloca_out)
- (*bed->s->swap_reloca_out) (output_bfd, irela, (bfd_byte *) erela);
- else
- elf_swap_reloca_out (output_bfd, irela, erela);
+ irel[0].r_addend = addend;
+ erel += (elf_section_data (output_section)->rel_count
+ * sizeof (Elf_External_Rela));
+ (*bed->s->swap_reloca_out) (output_bfd, irel, erel);
}
++elf_section_data (output_section)->rel_count;
- return true;
+ return TRUE;
}
\f
/* Allocate a pointer to live in a linker created section. */
-boolean
+bfd_boolean
elf_create_pointer_linker_section (abfd, info, lsect, h, rel)
bfd *abfd;
struct bfd_link_info *info;
if (_bfd_elf_find_pointer_linker_section (h->linker_section_pointer,
rel->r_addend,
lsect->which))
- return true;
+ return TRUE;
ptr_linker_section_ptr = &h->linker_section_pointer;
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
if (! elf_link_record_dynamic_symbol (info, h))
- return false;
+ return FALSE;
}
if (lsect->rel_section)
ptr = (elf_linker_section_pointers_t **) bfd_alloc (abfd, amt);
if (!ptr)
- return false;
+ return FALSE;
elf_local_ptr_offsets (abfd) = ptr;
for (i = 0; i < num_symbols; i++)
if (_bfd_elf_find_pointer_linker_section (ptr[r_symndx],
rel->r_addend,
lsect->which))
- return true;
+ return TRUE;
ptr_linker_section_ptr = &ptr[r_symndx];
linker_section_ptr = (elf_linker_section_pointers_t *) bfd_alloc (abfd, amt);
if (!linker_section_ptr)
- return false;
+ return FALSE;
linker_section_ptr->next = *ptr_linker_section_ptr;
linker_section_ptr->addend = rel->r_addend;
linker_section_ptr->which = lsect->which;
- linker_section_ptr->written_address_p = false;
+ linker_section_ptr->written_address_p = FALSE;
*ptr_linker_section_ptr = linker_section_ptr;
#if 0
(long) lsect->section->_raw_size);
#endif
- return true;
+ return TRUE;
}
\f
#if ARCH_SIZE==64
is done in the finish_dynamic_symbol routine. */
if (!linker_section_ptr->written_address_p)
{
- linker_section_ptr->written_address_p = true;
+ linker_section_ptr->written_address_p = TRUE;
bfd_put_ptr (output_bfd,
relocation + linker_section_ptr->addend,
(lsect->section->contents
/* Write out pointer if it hasn't been rewritten out before. */
if (!linker_section_ptr->written_address_p)
{
- linker_section_ptr->written_address_p = true;
+ linker_section_ptr->written_address_p = TRUE;
bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
lsect->section->contents + linker_section_ptr->offset);
if (info->shared)
{
asection *srel = lsect->rel_section;
- Elf_Internal_Rela *outrel;
- Elf_External_Rela *erel;
+ Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL];
+ bfd_byte *erel;
struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
unsigned int i;
- bfd_size_type amt;
-
- amt = sizeof (Elf_Internal_Rela) * bed->s->int_rels_per_ext_rel;
- outrel = (Elf_Internal_Rela *) bfd_zmalloc (amt);
- if (outrel == NULL)
- {
- (*_bfd_error_handler) (_("Error: out of memory"));
- return 0;
- }
/* We need to generate a relative reloc for the dynamic
linker. */
BFD_ASSERT (srel != NULL);
for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
- outrel[i].r_offset = (lsect->section->output_section->vma
- + lsect->section->output_offset
- + linker_section_ptr->offset);
+ {
+ outrel[i].r_offset = (lsect->section->output_section->vma
+ + lsect->section->output_offset
+ + linker_section_ptr->offset);
+ outrel[i].r_info = 0;
+ outrel[i].r_addend = 0;
+ }
outrel[0].r_info = ELF_R_INFO (0, relative_reloc);
- outrel[0].r_addend = 0;
- erel = (Elf_External_Rela *) lsect->section->contents;
- erel += elf_section_data (lsect->section)->rel_count;
+ erel = lsect->section->contents;
+ erel += (elf_section_data (lsect->section)->rel_count++
+ * sizeof (Elf_External_Rela));
elf_swap_reloca_out (output_bfd, outrel, erel);
- ++elf_section_data (lsect->section)->rel_count;
-
- free (outrel);
}
}
}
\f
/* Garbage collect unused sections. */
-static boolean elf_gc_mark
- PARAMS ((struct bfd_link_info *info, asection *sec,
- asection * (*gc_mark_hook)
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *))));
+static bfd_boolean elf_gc_mark
+ PARAMS ((struct bfd_link_info *, asection *,
+ asection * (*) (asection *, struct bfd_link_info *,
+ Elf_Internal_Rela *, struct elf_link_hash_entry *,
+ Elf_Internal_Sym *)));
-static boolean elf_gc_sweep
- PARAMS ((struct bfd_link_info *info,
- boolean (*gc_sweep_hook)
- PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
- const Elf_Internal_Rela *relocs))));
+static bfd_boolean elf_gc_sweep
+ PARAMS ((struct bfd_link_info *,
+ bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *)));
-static boolean elf_gc_sweep_symbol
- PARAMS ((struct elf_link_hash_entry *h, PTR idxptr));
+static bfd_boolean elf_gc_sweep_symbol
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_gc_allocate_got_offsets
- PARAMS ((struct elf_link_hash_entry *h, PTR offarg));
+static bfd_boolean elf_gc_allocate_got_offsets
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_gc_propagate_vtable_entries_used
- PARAMS ((struct elf_link_hash_entry *h, PTR dummy));
+static bfd_boolean elf_gc_propagate_vtable_entries_used
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_gc_smash_unused_vtentry_relocs
- PARAMS ((struct elf_link_hash_entry *h, PTR dummy));
+static bfd_boolean elf_gc_smash_unused_vtentry_relocs
+ PARAMS ((struct elf_link_hash_entry *, PTR));
/* The mark phase of garbage collection. For a given section, mark
it and any sections in this section's group, and all the sections
which define symbols to which it refers. */
-static boolean
+typedef asection * (*gc_mark_hook_fn)
+ PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static bfd_boolean
elf_gc_mark (info, sec, gc_mark_hook)
struct bfd_link_info *info;
asection *sec;
- asection * (*gc_mark_hook)
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
+ gc_mark_hook_fn gc_mark_hook;
{
- boolean ret;
+ bfd_boolean ret;
asection *group_sec;
sec->gc_mark = 1;
group_sec = elf_section_data (sec)->next_in_group;
if (group_sec && !group_sec->gc_mark)
if (!elf_gc_mark (info, group_sec, gc_mark_hook))
- return false;
+ return FALSE;
/* Look through the section relocs. */
- ret = true;
+ ret = TRUE;
if ((sec->flags & SEC_RELOC) != 0 && sec->reloc_count > 0)
{
Elf_Internal_Rela *relstart, *rel, *relend;
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
struct elf_link_hash_entry **sym_hashes;
size_t nlocsyms;
size_t extsymoff;
- Elf_External_Sym *locsyms, *freesyms = NULL;
- Elf_External_Sym_Shndx *locsym_shndx;
bfd *input_bfd = sec->owner;
struct elf_backend_data *bed = get_elf_backend_data (input_bfd);
-
- /* GCFIXME: how to arrange so that relocs and symbols are not
- reread continually? */
+ Elf_Internal_Sym *isym = NULL;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
else
extsymoff = nlocsyms = symtab_hdr->sh_info;
- if (symtab_hdr->contents)
- locsyms = (Elf_External_Sym *) symtab_hdr->contents;
- else if (nlocsyms == 0)
- locsyms = NULL;
- else
- {
- bfd_size_type amt = nlocsyms * sizeof (Elf_External_Sym);
- locsyms = freesyms = bfd_malloc (amt);
- if (freesyms == NULL
- || bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (locsyms, amt, input_bfd) != amt)
- {
- ret = false;
- goto out1;
- }
- }
-
- shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr;
- locsym_shndx = NULL;
- if (shndx_hdr->sh_size != 0 && nlocsyms != 0)
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isym == NULL && nlocsyms != 0)
{
- bfd_size_type amt = nlocsyms * sizeof (Elf_External_Sym_Shndx);
- locsym_shndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (locsym_shndx, amt, input_bfd) != amt)
- return false;
+ isym = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, nlocsyms, 0,
+ NULL, NULL, NULL);
+ if (isym == NULL)
+ return FALSE;
}
/* Read the relocations. */
- relstart = (NAME(_bfd_elf,link_read_relocs)
- (sec->owner, sec, NULL, (Elf_Internal_Rela *) NULL,
- info->keep_memory));
+ relstart = _bfd_elf_link_read_relocs (input_bfd, sec, NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
if (relstart == NULL)
{
- ret = false;
+ ret = FALSE;
goto out1;
}
relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
unsigned long r_symndx;
asection *rsec;
struct elf_link_hash_entry *h;
- Elf_Internal_Sym s;
r_symndx = ELF_R_SYM (rel->r_info);
if (r_symndx == 0)
continue;
- if (elf_bad_symtab (sec->owner))
- {
- elf_swap_symbol_in (input_bfd,
- locsyms + r_symndx,
- locsym_shndx + (locsym_shndx ? r_symndx : 0),
- &s);
- if (ELF_ST_BIND (s.st_info) == STB_LOCAL)
- rsec = (*gc_mark_hook) (sec->owner, info, rel, NULL, &s);
- else
- {
- h = sym_hashes[r_symndx - extsymoff];
- rsec = (*gc_mark_hook) (sec->owner, info, rel, h, NULL);
- }
- }
- else if (r_symndx >= nlocsyms)
+ if (r_symndx >= nlocsyms
+ || ELF_ST_BIND (isym[r_symndx].st_info) != STB_LOCAL)
{
h = sym_hashes[r_symndx - extsymoff];
- rsec = (*gc_mark_hook) (sec->owner, info, rel, h, NULL);
+ rsec = (*gc_mark_hook) (sec, info, rel, h, NULL);
}
else
{
- elf_swap_symbol_in (input_bfd,
- locsyms + r_symndx,
- locsym_shndx + (locsym_shndx ? r_symndx : 0),
- &s);
- rsec = (*gc_mark_hook) (sec->owner, info, rel, NULL, &s);
+ rsec = (*gc_mark_hook) (sec, info, rel, NULL, &isym[r_symndx]);
}
if (rsec && !rsec->gc_mark)
- if (!elf_gc_mark (info, rsec, gc_mark_hook))
- {
- ret = false;
- goto out2;
- }
+ {
+ if (bfd_get_flavour (rsec->owner) != bfd_target_elf_flavour)
+ rsec->gc_mark = 1;
+ else if (!elf_gc_mark (info, rsec, gc_mark_hook))
+ {
+ ret = FALSE;
+ goto out2;
+ }
+ }
}
out2:
- if (!info->keep_memory)
+ if (elf_section_data (sec)->relocs != relstart)
free (relstart);
out1:
- if (freesyms)
- free (freesyms);
+ if (isym != NULL && symtab_hdr->contents != (unsigned char *) isym)
+ {
+ if (! info->keep_memory)
+ free (isym);
+ else
+ symtab_hdr->contents = (unsigned char *) isym;
+ }
}
return ret;
/* The sweep phase of garbage collection. Remove all garbage sections. */
-static boolean
+typedef bfd_boolean (*gc_sweep_hook_fn)
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
+
+static bfd_boolean
elf_gc_sweep (info, gc_sweep_hook)
struct bfd_link_info *info;
- boolean (*gc_sweep_hook)
- PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
- const Elf_Internal_Rela *relocs));
+ gc_sweep_hook_fn gc_sweep_hook;
{
bfd *sub;
&& (o->flags & SEC_RELOC) && o->reloc_count > 0)
{
Elf_Internal_Rela *internal_relocs;
- boolean r;
+ bfd_boolean r;
- internal_relocs = (NAME(_bfd_elf,link_read_relocs)
- (o->owner, o, NULL, NULL, info->keep_memory));
+ internal_relocs
+ = _bfd_elf_link_read_relocs (o->owner, o, NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
if (internal_relocs == NULL)
- return false;
+ return FALSE;
r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs);
- if (!info->keep_memory)
+ if (elf_section_data (o)->relocs != internal_relocs)
free (internal_relocs);
if (!r)
- return false;
+ return FALSE;
}
}
}
elf_hash_table (info)->dynsymcount = i;
}
- return true;
+ return TRUE;
}
/* Sweep symbols in swept sections. Called via elf_link_hash_traverse. */
-static boolean
+static bfd_boolean
elf_gc_sweep_symbol (h, idxptr)
struct elf_link_hash_entry *h;
PTR idxptr;
{
int *idx = (int *) idxptr;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
if (h->dynindx != -1
&& ((h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
|| h->root.u.def.section->gc_mark))
h->dynindx = (*idx)++;
- return true;
+ return TRUE;
}
/* Propogate collected vtable information. This is called through
elf_link_hash_traverse. */
-static boolean
+static bfd_boolean
elf_gc_propagate_vtable_entries_used (h, okp)
struct elf_link_hash_entry *h;
PTR okp;
{
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
/* Those that are not vtables. */
if (h->vtable_parent == NULL)
- return true;
+ return TRUE;
/* Those vtables that do not have parents, we cannot merge. */
if (h->vtable_parent == (struct elf_link_hash_entry *) -1)
- return true;
+ return TRUE;
/* If we've already been done, exit. */
if (h->vtable_entries_used && h->vtable_entries_used[-1])
- return true;
+ return TRUE;
/* Make sure the parent's table is up to date. */
elf_gc_propagate_vtable_entries_used (h->vtable_parent, okp);
else
{
size_t n;
- boolean *cu, *pu;
+ bfd_boolean *cu, *pu;
/* Or the parent's entries into ours. */
cu = h->vtable_entries_used;
- cu[-1] = true;
+ cu[-1] = TRUE;
pu = h->vtable_parent->vtable_entries_used;
if (pu != NULL)
{
asection *sec = h->root.u.def.section;
struct elf_backend_data *bed = get_elf_backend_data (sec->owner);
- int file_align = bed->s->file_align;
+ unsigned int log_file_align = bed->s->log_file_align;
- n = h->vtable_parent->vtable_entries_size / file_align;
+ n = h->vtable_parent->vtable_entries_size >> log_file_align;
while (n--)
{
if (*pu)
- *cu = true;
+ *cu = TRUE;
pu++;
cu++;
}
}
}
- return true;
+ return TRUE;
}
-static boolean
+static bfd_boolean
elf_gc_smash_unused_vtentry_relocs (h, okp)
struct elf_link_hash_entry *h;
PTR okp;
bfd_vma hstart, hend;
Elf_Internal_Rela *relstart, *relend, *rel;
struct elf_backend_data *bed;
- int file_align;
+ unsigned int log_file_align;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
/* Take care of both those symbols that do not describe vtables as
well as those that are not loaded. */
if (h->vtable_parent == NULL)
- return true;
+ return TRUE;
BFD_ASSERT (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak);
hstart = h->root.u.def.value;
hend = hstart + h->size;
- relstart = (NAME(_bfd_elf,link_read_relocs)
- (sec->owner, sec, NULL, (Elf_Internal_Rela *) NULL, true));
+ relstart = _bfd_elf_link_read_relocs (sec->owner, sec, NULL,
+ (Elf_Internal_Rela *) NULL, TRUE);
if (!relstart)
- return *(boolean *) okp = false;
+ return *(bfd_boolean *) okp = FALSE;
bed = get_elf_backend_data (sec->owner);
- file_align = bed->s->file_align;
+ log_file_align = bed->s->log_file_align;
relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
if (h->vtable_entries_used
&& (rel->r_offset - hstart) < h->vtable_entries_size)
{
- bfd_vma entry = (rel->r_offset - hstart) / file_align;
+ bfd_vma entry = (rel->r_offset - hstart) >> log_file_align;
if (h->vtable_entries_used[entry])
continue;
}
rel->r_offset = rel->r_info = rel->r_addend = 0;
}
- return true;
+ return TRUE;
}
/* Do mark and sweep of unused sections. */
-boolean
+bfd_boolean
elf_gc_sections (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- boolean ok = true;
+ bfd_boolean ok = TRUE;
bfd *sub;
asection * (*gc_mark_hook)
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
+ PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *h, Elf_Internal_Sym *));
if (!get_elf_backend_data (abfd)->can_gc_sections
- || info->relocateable || info->emitrelocations
+ || info->relocatable || info->emitrelocations
|| elf_hash_table (info)->dynamic_sections_created)
- return true;
+ return TRUE;
/* Apply transitive closure to the vtable entry usage info. */
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_propagate_vtable_entries_used,
(PTR) &ok);
if (!ok)
- return false;
+ return FALSE;
/* Kill the vtable relocations that were not used. */
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_smash_unused_vtentry_relocs,
(PTR) &ok);
if (!ok)
- return false;
+ return FALSE;
/* Grovel through relocs to find out who stays ... */
{
if (o->flags & SEC_KEEP)
if (!elf_gc_mark (info, o, gc_mark_hook))
- return false;
+ return FALSE;
}
}
/* ... and mark SEC_EXCLUDE for those that go. */
if (!elf_gc_sweep (info, get_elf_backend_data (abfd)->gc_sweep_hook))
- return false;
+ return FALSE;
- return true;
+ return TRUE;
}
\f
/* Called from check_relocs to record the existance of a VTINHERIT reloc. */
-boolean
+bfd_boolean
elf_gc_record_vtinherit (abfd, sec, h, offset)
bfd *abfd;
asection *sec;
bfd_archive_filename (abfd), sec->name,
(unsigned long) offset);
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ return FALSE;
win:
if (!h)
else
child->vtable_parent = h;
- return true;
+ return TRUE;
}
/* Called from check_relocs to record the existance of a VTENTRY reloc. */
-boolean
+bfd_boolean
elf_gc_record_vtentry (abfd, sec, h, addend)
bfd *abfd ATTRIBUTE_UNUSED;
asection *sec ATTRIBUTE_UNUSED;
bfd_vma addend;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
- int file_align = bed->s->file_align;
+ unsigned int log_file_align = bed->s->log_file_align;
if (addend >= h->vtable_entries_size)
{
- size_t size, bytes;
- boolean *ptr = h->vtable_entries_used;
+ size_t size, bytes, file_align;
+ bfd_boolean *ptr = h->vtable_entries_used;
/* While the symbol is undefined, we have to be prepared to handle
a zero size. */
+ file_align = 1 << log_file_align;
if (h->root.type == bfd_link_hash_undefined)
- size = addend;
+ size = addend + file_align;
else
{
size = h->size;
- if (size < addend)
+ if (addend >= size)
{
/* Oops! We've got a reference past the defined end of
the table. This is probably a bug -- shall we warn? */
- size = addend;
+ size = addend + file_align;
}
}
+ size = (size + file_align - 1) & -file_align;
/* Allocate one extra entry for use as a "done" flag for the
consolidation pass. */
- bytes = (size / file_align + 1) * sizeof (boolean);
+ bytes = ((size >> log_file_align) + 1) * sizeof (bfd_boolean);
if (ptr)
{
{
size_t oldbytes;
- oldbytes = ((h->vtable_entries_size / file_align + 1)
- * sizeof (boolean));
+ oldbytes = (((h->vtable_entries_size >> log_file_align) + 1)
+ * sizeof (bfd_boolean));
memset (((char *) ptr) + oldbytes, 0, bytes - oldbytes);
}
}
ptr = bfd_zmalloc ((bfd_size_type) bytes);
if (ptr == NULL)
- return false;
+ return FALSE;
/* And arrange for that done flag to be at index -1. */
h->vtable_entries_used = ptr + 1;
h->vtable_entries_size = size;
}
- h->vtable_entries_used[addend / file_align] = true;
+ h->vtable_entries_used[addend >> log_file_align] = TRUE;
- return true;
+ return TRUE;
}
/* And an accompanying bit to work out final got entry offsets once
we're done. Should be called from final_link. */
-boolean
+bfd_boolean
elf_gc_common_finalize_got_offsets (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_allocate_got_offsets,
(PTR) &gotoff);
- return true;
+ return TRUE;
}
/* We need a special top-level link routine to convert got reference counts
to real got offsets. */
-static boolean
+static bfd_boolean
elf_gc_allocate_got_offsets (h, offarg)
struct elf_link_hash_entry *h;
PTR offarg;
{
bfd_vma *off = (bfd_vma *) offarg;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
if (h->got.refcount > 0)
{
h->got.offset = off[0];
else
h->got.offset = (bfd_vma) -1;
- return true;
+ return TRUE;
}
/* Many folk need no more in the way of final link than this, once
got entry reference counting is enabled. */
-boolean
+bfd_boolean
elf_gc_common_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
if (!elf_gc_common_finalize_got_offsets (abfd, info))
- return false;
+ return FALSE;
/* Invoke the regular ELF backend linker to do all the work. */
return elf_bfd_final_link (abfd, info);
/* This function will be called though elf_link_hash_traverse to store
all hash value of the exported symbols in an array. */
-static boolean
+static bfd_boolean
elf_collect_hash_codes (h, data)
struct elf_link_hash_entry *h;
PTR data;
unsigned long ha;
char *alc = NULL;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
/* Ignore indirect symbols. These are added by the versioning code. */
if (h->dynindx == -1)
- return true;
+ return TRUE;
name = h->root.root.string;
p = strchr (name, ELF_VER_CHR);
if (alc != NULL)
free (alc);
- return true;
+ return TRUE;
}
-boolean
+bfd_boolean
elf_reloc_symbol_deleted_p (offset, cookie)
bfd_vma offset;
PTR cookie;
for (; rcookie->rel < rcookie->relend; rcookie->rel++)
{
- unsigned long r_symndx = ELF_R_SYM (rcookie->rel->r_info);
- Elf_Internal_Sym isym;
+ unsigned long r_symndx;
if (! rcookie->bad_symtab)
if (rcookie->rel->r_offset > offset)
- return false;
+ return FALSE;
if (rcookie->rel->r_offset != offset)
continue;
- if (rcookie->locsyms && r_symndx < rcookie->locsymcount)
- {
- Elf_External_Sym *lsym;
- Elf_External_Sym_Shndx *lshndx;
-
- lsym = (Elf_External_Sym *) rcookie->locsyms + r_symndx;
- lshndx = (Elf_External_Sym_Shndx *) rcookie->locsym_shndx;
- if (lshndx != NULL)
- lshndx += r_symndx;
- elf_swap_symbol_in (rcookie->abfd, lsym, lshndx, &isym);
- }
+ r_symndx = ELF_R_SYM (rcookie->rel->r_info);
+ if (r_symndx == SHN_UNDEF)
+ return TRUE;
if (r_symndx >= rcookie->locsymcount
- || (rcookie->locsyms
- && ELF_ST_BIND (isym.st_info) != STB_LOCAL))
+ || ELF_ST_BIND (rcookie->locsyms[r_symndx].st_info) != STB_LOCAL)
{
struct elf_link_hash_entry *h;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& elf_discarded_section (h->root.u.def.section))
- return true;
+ return TRUE;
else
- return false;
+ return FALSE;
}
- else if (rcookie->locsyms)
+ else
{
/* It's not a relocation against a global symbol,
but it could be a relocation against a local
symbol for a discarded section. */
asection *isec;
+ Elf_Internal_Sym *isym;
/* Need to: get the symbol; get the section. */
- if (isym.st_shndx < SHN_LORESERVE || isym.st_shndx > SHN_HIRESERVE)
+ isym = &rcookie->locsyms[r_symndx];
+ if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
{
- isec = section_from_elf_index (rcookie->abfd, isym.st_shndx);
+ isec = section_from_elf_index (rcookie->abfd, isym->st_shndx);
if (isec != NULL && elf_discarded_section (isec))
- return true;
+ return TRUE;
}
}
- return false;
+ return FALSE;
}
- return false;
+ return FALSE;
}
/* Discard unneeded references to discarded sections.
- Returns true if any section's size was changed. */
+ 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. */
-boolean
+bfd_boolean
elf_bfd_discard_info (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
struct elf_reloc_cookie cookie;
- asection *stab, *eh, *ehdr;
+ asection *stab, *eh;
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
- Elf_External_Sym *freesyms;
struct elf_backend_data *bed;
bfd *abfd;
- boolean ret = false;
- boolean strip = info->strip == strip_all || info->strip == strip_debugger;
+ unsigned int count;
+ bfd_boolean ret = FALSE;
- if (info->relocateable
- || info->traditional_format
+ if (info->traditional_format
|| info->hash->creator->flavour != bfd_target_elf_flavour
|| ! is_elf_hash_table (info))
- return false;
-
- ehdr = NULL;
- if (elf_hash_table (info)->dynobj != NULL)
- ehdr = bfd_get_section_by_name (elf_hash_table (info)->dynobj,
- ".eh_frame_hdr");
+ return FALSE;
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
{
if ((abfd->flags & DYNAMIC) != 0)
continue;
- eh = NULL;
- if (ehdr)
- {
- eh = bfd_get_section_by_name (abfd, ".eh_frame");
- if (eh && eh->_raw_size == 0)
- eh = NULL;
- }
+ eh = bfd_get_section_by_name (abfd, ".eh_frame");
+ if (info->relocatable
+ || (eh != NULL
+ && (eh->_raw_size == 0
+ || bfd_is_abs_section (eh->output_section))))
+ eh = NULL;
- stab = strip ? NULL : bfd_get_section_by_name (abfd, ".stab");
- if ((! stab
- || elf_section_data(stab)->sec_info_type != ELF_INFO_TYPE_STABS)
- && ! eh
- && (strip || ! bed->elf_backend_discard_info))
+ stab = bfd_get_section_by_name (abfd, ".stab");
+ if (stab != NULL
+ && (stab->_raw_size == 0
+ || bfd_is_abs_section (stab->output_section)
+ || stab->sec_info_type != ELF_INFO_TYPE_STABS))
+ stab = NULL;
+
+ if (stab == NULL
+ && eh == NULL
+ && bed->elf_backend_discard_info == NULL)
continue;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
-
cookie.abfd = abfd;
cookie.sym_hashes = elf_sym_hashes (abfd);
cookie.bad_symtab = elf_bad_symtab (abfd);
if (cookie.bad_symtab)
{
- cookie.locsymcount =
- symtab_hdr->sh_size / sizeof (Elf_External_Sym);
+ cookie.locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym);
cookie.extsymoff = 0;
}
else
cookie.extsymoff = symtab_hdr->sh_info;
}
- freesyms = NULL;
- if (symtab_hdr->contents)
- cookie.locsyms = (void *) symtab_hdr->contents;
- else if (cookie.locsymcount == 0)
- cookie.locsyms = NULL;
- else
+ cookie.locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (cookie.locsyms == NULL && cookie.locsymcount != 0)
{
- bfd_size_type amt = cookie.locsymcount * sizeof (Elf_External_Sym);
- cookie.locsyms = bfd_malloc (amt);
+ cookie.locsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ cookie.locsymcount, 0,
+ NULL, NULL, NULL);
if (cookie.locsyms == NULL)
- return false;
- freesyms = cookie.locsyms;
- if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (cookie.locsyms, amt, abfd) != amt)
- {
- error_ret_free_loc:
- free (cookie.locsyms);
- return false;
- }
- }
-
- cookie.locsym_shndx = NULL;
- if (shndx_hdr->sh_size != 0 && cookie.locsymcount != 0)
- {
- bfd_size_type amt;
- amt = cookie.locsymcount * sizeof (Elf_External_Sym_Shndx);
- cookie.locsym_shndx = bfd_malloc (amt);
- if (cookie.locsym_shndx == NULL)
- goto error_ret_free_loc;
- if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (cookie.locsym_shndx, amt, abfd) != amt)
- {
- free (cookie.locsym_shndx);
- goto error_ret_free_loc;
- }
+ return FALSE;
}
- if (stab)
+ if (stab != NULL)
{
- cookie.rels = (NAME(_bfd_elf,link_read_relocs)
- (abfd, stab, (PTR) NULL,
- (Elf_Internal_Rela *) NULL,
- info->keep_memory));
- if (cookie.rels)
+ cookie.rels = NULL;
+ count = stab->reloc_count;
+ if (count != 0)
+ cookie.rels
+ = _bfd_elf_link_read_relocs (abfd, stab, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
+ if (cookie.rels != NULL)
{
cookie.rel = cookie.rels;
- cookie.relend =
- cookie.rels + stab->reloc_count * bed->s->int_rels_per_ext_rel;
+ cookie.relend = cookie.rels;
+ cookie.relend += count * bed->s->int_rels_per_ext_rel;
if (_bfd_discard_section_stabs (abfd, stab,
elf_section_data (stab)->sec_info,
elf_reloc_symbol_deleted_p,
&cookie))
- ret = true;
- if (! info->keep_memory)
+ ret = TRUE;
+ if (elf_section_data (stab)->relocs != cookie.rels)
free (cookie.rels);
}
}
- if (eh)
+ if (eh != NULL)
{
cookie.rels = NULL;
- cookie.rel = NULL;
- cookie.relend = NULL;
- if (eh->reloc_count)
- cookie.rels = (NAME(_bfd_elf,link_read_relocs)
- (abfd, eh, (PTR) NULL, (Elf_Internal_Rela *) NULL,
- info->keep_memory));
- if (cookie.rels)
- {
- cookie.rel = cookie.rels;
- cookie.relend =
- cookie.rels + eh->reloc_count * bed->s->int_rels_per_ext_rel;
- }
- if (_bfd_elf_discard_section_eh_frame (abfd, info, eh, ehdr,
+ count = eh->reloc_count;
+ if (count != 0)
+ cookie.rels
+ = _bfd_elf_link_read_relocs (abfd, eh, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory);
+ cookie.rel = cookie.rels;
+ cookie.relend = cookie.rels;
+ if (cookie.rels != NULL)
+ cookie.relend += count * bed->s->int_rels_per_ext_rel;
+
+ if (_bfd_elf_discard_section_eh_frame (abfd, info, eh,
elf_reloc_symbol_deleted_p,
&cookie))
- ret = true;
- if (! info->keep_memory)
+ ret = TRUE;
+
+ if (cookie.rels != NULL
+ && elf_section_data (eh)->relocs != cookie.rels)
free (cookie.rels);
}
- if (bed->elf_backend_discard_info)
+ if (bed->elf_backend_discard_info != NULL
+ && (*bed->elf_backend_discard_info) (abfd, &cookie, info))
+ ret = TRUE;
+
+ if (cookie.locsyms != NULL
+ && symtab_hdr->contents != (unsigned char *) cookie.locsyms)
{
- if (bed->elf_backend_discard_info (abfd, &cookie, info))
- ret = true;
+ if (! info->keep_memory)
+ free (cookie.locsyms);
+ else
+ symtab_hdr->contents = (unsigned char *) cookie.locsyms;
}
-
- if (cookie.locsym_shndx != NULL)
- free (cookie.locsym_shndx);
-
- if (freesyms != NULL)
- free (freesyms);
}
- if (ehdr && _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info, ehdr))
- ret = true;
+ if (info->eh_frame_hdr
+ && !info->relocatable
+ && _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info))
+ ret = TRUE;
+
return ret;
}
-static boolean
+static bfd_boolean
elf_section_ignore_discarded_relocs (sec)
asection *sec;
{
struct elf_backend_data *bed;
- switch (elf_section_data (sec)->sec_info_type)
+ switch (sec->sec_info_type)
{
case ELF_INFO_TYPE_STABS:
case ELF_INFO_TYPE_EH_FRAME:
- return true;
+ return TRUE;
default:
break;
}
bed = get_elf_backend_data (sec->owner);
if (bed->elf_backend_ignore_discarded_relocs != NULL
&& (*bed->elf_backend_ignore_discarded_relocs) (sec))
- return true;
+ return TRUE;
- return false;
+ return FALSE;
}
projects / thirdparty / binutils-gdb.git / blobdiff