/* BFD back-end for National Semiconductor's CR16 ELF
- Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright 2007, 2008, 2009, 2010, 2012 Free Software Foundation, Inc.
Written by M R Swami Reddy.
This file is part of BFD, the Binary File Descriptor library.
linking with -Bsymbolic. We store the information in a field
extending the regular ELF linker hash table. */
-struct elf32_cr16_link_hash_entry {
+struct elf32_cr16_link_hash_entry
+{
/* The basic elf link hash table entry. */
struct elf_link_hash_entry root;
bfd_vma value;
};
-/* We derive a hash table from the main elf linker hash table so
- we can store state variables and a secondary hash table without
- resorting to global variables. */
-struct elf32_cr16_link_hash_table {
- /* The main hash table. */
- struct elf_link_hash_table root;
-
- /* A hash table for static functions. We could derive a new hash table
- instead of using the full elf32_cr16_link_hash_table if we wanted
- to save some memory. */
- struct elf32_cr16_link_hash_table *static_hash_table;
-
- /* Random linker state flags. */
-#define CR16_HASH_ENTRIES_INITIALIZED 0x1
- char flags;
-};
-
-/* For CR16 linker hash table. */
-
-/* Get the CR16 ELF linker hash table from a link_info structure. */
-
-#define elf32_cr16_hash_table(p) \
- ((struct elf32_cr16_link_hash_table *) ((p)->hash))
-
-#define elf32_cr16_link_hash_traverse(table, func, info) \
- (elf_link_hash_traverse \
- (&(table)->root, \
- (bfd_boolean (*) ((struct elf_link_hash_entry *, void *))) (func), (info)))
-
/* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */
struct cr16_reloc_map
int ptralign;
/* This function may be called more than once. */
- if (bfd_get_section_by_name (abfd, ".got") != NULL)
+ if (bfd_get_linker_section (abfd, ".got") != NULL)
return TRUE;
switch (bed->s->arch_size)
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED);
- s = bfd_make_section_with_flags (abfd, ".got", flags);
+ s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
if (bed->want_got_plt)
{
- s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
+ s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
if (sgot == NULL)
{
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = bfd_get_linker_section (dynobj, ".got");
BFD_ASSERT (sgot != NULL);
}
if (srelgot == NULL
&& (h != NULL || info->executable))
{
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ srelgot = bfd_get_linker_section (dynobj, ".rela.got");
if (srelgot == NULL)
- {
- srelgot = bfd_make_section_with_flags (dynobj,
- ".rela.got",
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY));
+ {
+ flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_READONLY);
+ srelgot = bfd_make_section_anyway_with_flags (dynobj,
+ ".rela.got",
+ flags);
if (srelgot == NULL
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
goto fail;
bfd_byte *hit_data = contents + offset;
bfd_vma reloc_bits, check, Rvalue1;
bfd * dynobj;
- bfd_vma * local_got_offsets;
dynobj = elf_hash_table (info)->dynobj;
- local_got_offsets = elf_local_got_offsets (input_bfd);
switch (r_type)
{
}
else if (r_type == R_CR16_GOT_REGREL20)
{
- asection * sgot = bfd_get_section_by_name (dynobj, ".got");
+ asection * sgot = bfd_get_linker_section (dynobj, ".got");
if (h != NULL)
{
else if (r_type == R_CR16_GOTC_REGREL20)
{
asection * sgot;
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = bfd_get_linker_section (dynobj, ".got");
if (h != NULL)
{
unsigned int sec_shndx;
bfd_byte *contents;
Elf_Internal_Rela *irel, *irelend;
- Elf_Internal_Rela *irelalign;
bfd_vma toaddr;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
contents = elf_section_data (sec)->this_hdr.contents;
- /* The deletion must stop at the next ALIGN reloc for an aligment
- power larger than the number of bytes we are deleting. */
- irelalign = NULL;
toaddr = sec->size;
irel = elf_section_data (sec)->relocs;
unresolved_reloc, warned);
}
- if (sec != NULL && elf_discarded_section (sec))
- {
- /* For relocs against symbols from removed linkonce sections,
- or sections discarded by a linker script, we just want the
- section contents zeroed. Avoid any special processing. */
- _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
- rel->r_info = 0;
- rel->r_addend = 0;
- continue;
- }
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
if (info->relocatable)
continue;
static struct bfd_link_hash_table *
elf32_cr16_link_hash_table_create (bfd *abfd)
{
- struct elf32_cr16_link_hash_table *ret;
- bfd_size_type amt = sizeof (struct elf32_cr16_link_hash_table);
+ struct elf_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_link_hash_table);
- ret = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt);
- if (ret == (struct elf32_cr16_link_hash_table *) NULL)
+ ret = (struct elf_link_hash_table *) bfd_malloc (amt);
+ if (ret == (struct elf_link_hash_table *) NULL)
return NULL;
- if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
+ if (!_bfd_elf_link_hash_table_init (ret, abfd,
elf32_cr16_link_hash_newfunc,
- sizeof (struct elf32_cr16_link_hash_entry)))
- {
- free (ret);
- return NULL;
- }
-
- ret->flags = 0;
- amt = sizeof (struct elf_link_hash_table);
- ret->static_hash_table
- = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt);
- if (ret->static_hash_table == NULL)
+ sizeof (struct elf32_cr16_link_hash_entry),
+ GENERIC_ELF_DATA))
{
free (ret);
return NULL;
}
- if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
- elf32_cr16_link_hash_newfunc,
- sizeof (struct elf32_cr16_link_hash_entry)))
- {
- free (ret->static_hash_table);
- free (ret);
- return NULL;
- }
- return &ret->root.root;
+ return &ret->root;
}
/* Free an cr16 ELF linker hash table. */
static void
elf32_cr16_link_hash_table_free (struct bfd_link_hash_table *hash)
{
- struct elf32_cr16_link_hash_table *ret
- = (struct elf32_cr16_link_hash_table *) hash;
+ struct elf_link_hash_table *ret
+ = (struct elf_link_hash_table *) hash;
- _bfd_generic_link_hash_table_free
- ((struct bfd_link_hash_table *) ret->static_hash_table);
_bfd_generic_link_hash_table_free
((struct bfd_link_hash_table *) ret);
}
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED);
- s = bfd_make_section_with_flags (abfd,
- (bed->default_use_rela_p
- ? ".rela.plt" : ".rel.plt"),
- flags | SEC_READONLY);
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->default_use_rela_p
+ ? ".rela.plt" : ".rel.plt"),
+ flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
if (! _bfd_cr16_elf_create_got_section (abfd, info))
return FALSE;
- {
- const char * secname;
- char * relname;
- flagword secflags;
- asection * sec;
-
- for (sec = abfd->sections; sec; sec = sec->next)
- {
- secflags = bfd_get_section_flags (abfd, sec);
- if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
- || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
- continue;
-
- secname = bfd_get_section_name (abfd, sec);
- relname = (char *) bfd_malloc (strlen (secname) + 6);
- strcpy (relname, ".rela");
- strcat (relname, secname);
-
- s = bfd_make_section_with_flags (abfd, relname,
- flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, ptralign))
- return FALSE;
- }
- }
-
if (bed->want_dynbss)
{
/* The .dynbss section is a place to put symbols which are defined
image and use a R_*_COPY reloc to tell the dynamic linker to
initialize them at run time. The linker script puts the .dynbss
section into the .bss section of the final image. */
- s = bfd_make_section_with_flags (abfd, ".dynbss",
- SEC_ALLOC | SEC_LINKER_CREATED);
+ s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
+ SEC_ALLOC | SEC_LINKER_CREATED);
if (s == NULL)
return FALSE;
copy relocs. */
if (! info->executable)
{
- s = bfd_make_section_with_flags (abfd,
- (bed->default_use_rela_p
- ? ".rela.bss" : ".rel.bss"),
- flags | SEC_READONLY);
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->default_use_rela_p
+ ? ".rela.bss" : ".rel.bss"),
+ flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
/* We also need to make an entry in the .got.plt section, which
will be placed in the .got section by the linker script. */
- s = bfd_get_section_by_name (dynobj, ".got.plt");
+ s = bfd_get_linker_section (dynobj, ".got.plt");
BFD_ASSERT (s != NULL);
s->size += 4;
/* We also need to make an entry in the .rela.plt section. */
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
+ s = bfd_get_linker_section (dynobj, ".rela.plt");
BFD_ASSERT (s != NULL);
s->size += sizeof (Elf32_External_Rela);
if (!h->non_got_ref)
return TRUE;
- if (h->size == 0)
- {
- (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
- h->root.root.string);
- return TRUE;
- }
-
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
- s = bfd_get_section_by_name (dynobj, ".dynbss");
+ s = bfd_get_linker_section (dynobj, ".dynbss");
BFD_ASSERT (s != NULL);
/* We must generate a R_CR16_COPY reloc to tell the dynamic linker to
copy the initial value out of the dynamic object and into the
runtime process image. We need to remember the offset into the
.rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
{
asection * srel;
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
+ srel = bfd_get_linker_section (dynobj, ".rela.bss");
BFD_ASSERT (srel != NULL);
srel->size += sizeof (Elf32_External_Rela);
h->needs_copy = 1;
if (info->executable)
{
#if 0
- s = bfd_get_section_by_name (dynobj, ".interp");
+ s = bfd_get_linker_section (dynobj, ".interp");
BFD_ASSERT (s != NULL);
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
not actually use these entries. Reset the size of .rela.got,
which will cause it to get stripped from the output file
below. */
- s = bfd_get_section_by_name (dynobj, ".rela.got");
+ s = bfd_get_linker_section (dynobj, ".rela.got");
if (s != NULL)
s->size = 0;
}
/* This symbol has an entry in the global offset table. Set it up. */
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srel = bfd_get_section_by_name (dynobj, ".rela.got");
+ sgot = bfd_get_linker_section (dynobj, ".got");
+ srel = bfd_get_linker_section (dynobj, ".rela.got");
BFD_ASSERT (sgot != NULL && srel != NULL);
rel.r_offset = (sgot->output_section->vma
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak));
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
+ s = bfd_get_linker_section (dynobj, ".rela.bss");
BFD_ASSERT (s != NULL);
rel.r_offset = (h->root.u.def.value
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ if (h == elf_hash_table (info)->hdynamic
|| h == elf_hash_table (info)->hgot)
sym->st_shndx = SHN_ABS;
dynobj = elf_hash_table (info)->dynobj;
- sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ sgot = bfd_get_linker_section (dynobj, ".got.plt");
BFD_ASSERT (sgot != NULL);
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ sdyn = bfd_get_linker_section (dynobj, ".dynamic");
if (elf_hash_table (info)->dynamic_sections_created)
{
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