static bfd_reloc_status_type mn10300_elf_final_link_relocate
PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
- bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *,
+ bfd_vma, bfd_vma, bfd_vma,
+ struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *,
asection *, int));
static bfd_boolean mn10300_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data
PARAMS ((bfd *,bfd *));
+/* The mn10300 linker needs to keep track of the number of relocs that
+ it decides to copy in check_relocs for each symbol. This is so
+ that it can discard PC relative relocs if it doesn't need them when
+ linking with -Bsymbolic. We store the information in a field
+ extending the regular ELF linker hash table. */
+
+/* This structure keeps track of the number of PC relative relocs we
+ have copied for a given symbol. */
+
+struct elf_mn10300_pcrel_relocs_copied
+{
+ /* Next section. */
+ struct elf_mn10300_pcrel_relocs_copied * next;
+ /* A section in dynobj. */
+ asection * section;
+ /* Number of relocs copied in this section. */
+ bfd_size_type count;
+};
+
struct elf32_mn10300_link_hash_entry {
/* The basic elf link hash table entry. */
struct elf_link_hash_entry root;
add it to the hash table to avoid computing it over and over. */
unsigned char movm_stack_size;
+ /* Number of PC relative relocs copied for this symbol. */
+ struct elf_mn10300_pcrel_relocs_copied * pcrel_relocs_copied;
+
/* When set, convert all "call" instructions to this target into "calls"
instructions. */
#define MN10300_CONVERT_CALL_TO_CALLS 0x1
PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *,
bfd_vma, unsigned char *));
+static bfd_boolean _bfd_mn10300_elf_create_got_section
+ PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static bfd_boolean _bfd_mn10300_elf_discard_copies
+ PARAMS ((struct elf32_mn10300_link_hash_entry *,
+ struct bfd_link_info *));
+static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
+ Elf_Internal_Sym *));
+static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
static reloc_howto_type elf_mn10300_howto_table[] = {
/* Dummy relocation. Does nothing. */
HOWTO (R_MN10300_NONE,
0xffffff,
0xffffff,
FALSE),
+ HOWTO (R_MN10300_GOTPC32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOTPC32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOTPC16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOTPC16", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOTOFF32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOTOFF32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOTOFF24, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOTOFF24", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffff, /* src_mask */
+ 0xffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOTOFF16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOTOFF16", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_PLT32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_PLT32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_PLT16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_PLT16", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOT32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOT32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOT24, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOT24", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GOT16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GOT16", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_COPY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_COPY", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_GLOB_DAT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_GLOB_DAT", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_JMP_SLOT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_JMP_SLOT", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MN10300_RELATIVE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* */
+ "R_MN10300_RELATIVE", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
};
struct mn10300_reloc_map {
{ BFD_RELOC_24, R_MN10300_24, },
{ BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
{ BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
+ { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
+ { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
+ { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
+ { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
+ { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
+ { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
+ { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
+ { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
+ { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
+ { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
+ { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
+ { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
+ { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
+ { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
};
+/* Create the GOT section. */
+
+static bfd_boolean
+_bfd_mn10300_elf_create_got_section (abfd, info)
+ bfd * abfd;
+ struct bfd_link_info * info;
+{
+ flagword flags;
+ flagword pltflags;
+ asection * s;
+ struct elf_link_hash_entry * h;
+ struct elf_backend_data * bed = get_elf_backend_data (abfd);
+ int ptralign;
+
+ /* This function may be called more than once. */
+ if (bfd_get_section_by_name (abfd, ".got") != NULL)
+ return TRUE;
+
+ switch (bed->s->arch_size)
+ {
+ case 32:
+ ptralign = 2;
+ break;
+
+ case 64:
+ ptralign = 3;
+ break;
+
+ default:
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ pltflags = flags;
+ pltflags |= SEC_CODE;
+ if (bed->plt_not_loaded)
+ pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
+ if (bed->plt_readonly)
+ pltflags |= SEC_READONLY;
+
+ s = bfd_make_section (abfd, ".plt");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, pltflags)
+ || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
+ return FALSE;
+
+ if (bed->want_plt_sym)
+ {
+ /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
+ .plt section. */
+ struct elf_link_hash_entry *h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", 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;
+ }
+
+ s = bfd_make_section (abfd, ".got");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, ptralign))
+ return FALSE;
+
+ if (bed->want_got_plt)
+ {
+ s = bfd_make_section (abfd, ".got.plt");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, ptralign))
+ return FALSE;
+ }
+
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+ (or .got.plt) section. We don't do this in the linker script
+ because we don't want to define the symbol if we are not creating
+ a global offset table. */
+ h = NULL;
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
+ bed->got_symbol_offset, (const char *) NULL, FALSE,
+ bed->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;
+
+ elf_hash_table (info)->hgot = h;
+
+ /* The first bit of the global offset table is the header. */
+ s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
+
+ return TRUE;
+}
+
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
+ bfd * dynobj;
+ bfd_vma * local_got_offsets;
+ asection * sgot;
+ asection * srelgot;
+ asection * sreloc;
+
+ sgot = NULL;
+ srelgot = NULL;
+ sreloc = NULL;
if (info->relocatable)
return TRUE;
if (!elf_bad_symtab (abfd))
sym_hashes_end -= symtab_hdr->sh_info;
+ dynobj = elf_hash_table (info)->dynobj;
+ local_got_offsets = elf_local_got_offsets (abfd);
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ /* Some relocs require a global offset table. */
+ if (dynobj == NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_MN10300_GOT32:
+ case R_MN10300_GOT24:
+ case R_MN10300_GOT16:
+ case R_MN10300_GOTOFF32:
+ case R_MN10300_GOTOFF24:
+ case R_MN10300_GOTOFF16:
+ case R_MN10300_GOTPC32:
+ case R_MN10300_GOTPC16:
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
+ return FALSE;
+ break;
+
+ default:
+ break;
+ }
+ }
+
switch (ELF32_R_TYPE (rel->r_info))
{
/* This relocation describes the C++ object vtable hierarchy.
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
+ case R_MN10300_GOT32:
+ case R_MN10300_GOT24:
+ case R_MN10300_GOT16:
+ /* This symbol requires a global offset table entry. */
+
+ if (sgot == NULL)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ }
+
+ if (srelgot == NULL
+ && (h != NULL || info->shared))
+ {
+ srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ if (srelgot == NULL)
+ {
+ srelgot = bfd_make_section (dynobj, ".rela.got");
+ if (srelgot == NULL
+ || ! bfd_set_section_flags (dynobj, srelgot,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY))
+ || ! bfd_set_section_alignment (dynobj, srelgot, 2))
+ return FALSE;
+ }
+ }
+
+ if (h != NULL)
+ {
+ if (h->got.offset != (bfd_vma) -1)
+ /* We have already allocated space in the .got. */
+ break;
+
+ h->got.offset = sgot->_raw_size;
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+
+ srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ else
+ {
+ /* This is a global offset table entry for a local
+ symbol. */
+ if (local_got_offsets == NULL)
+ {
+ size_t size;
+ unsigned int i;
+
+ size = symtab_hdr->sh_info * sizeof (bfd_vma);
+ local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
+
+ if (local_got_offsets == NULL)
+ return FALSE;
+ elf_local_got_offsets (abfd) = local_got_offsets;
+
+ for (i = 0; i < symtab_hdr->sh_info; i++)
+ local_got_offsets[i] = (bfd_vma) -1;
+ }
+
+ if (local_got_offsets[r_symndx] != (bfd_vma) -1)
+ /* We have already allocated space in the .got. */
+ break;
+
+ local_got_offsets[r_symndx] = sgot->_raw_size;
+
+ if (info->shared)
+ /* If we are generating a shared object, we need to
+ output a R_MN10300_RELATIVE reloc so that the dynamic
+ linker can adjust this GOT entry. */
+ srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+
+ sgot->_raw_size += 4;
+
+ break;
+
+ case R_MN10300_PLT32:
+ case R_MN10300_PLT16:
+ /* This symbol requires a procedure linkage table entry. We
+ actually build the entry in adjust_dynamic_symbol,
+ because this might be a case of linking PIC code which is
+ never referenced by a dynamic object, in which case we
+ don't need to generate a procedure linkage table entry
+ after all. */
+
+ /* If this is a local symbol, we resolve it directly without
+ creating a procedure linkage table entry. */
+ if (h == NULL)
+ continue;
+
+ if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
+ || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
+ break;
+
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+
+ break;
+
+ case R_MN10300_32:
+ case R_MN10300_24:
+ case R_MN10300_16:
+ case R_MN10300_8:
+ case R_MN10300_PCREL32:
+ case R_MN10300_PCREL16:
+ case R_MN10300_PCREL8:
+ if (h != NULL)
+ h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
+ /* If we are creating a shared library, and this is a reloc
+ against a global symbol, or a non PC relative reloc
+ against a local symbol, then we need to copy the reloc
+ into the shared library. However, if we are linking with
+ -Bsymbolic, we do not need to copy a reloc against a
+ global symbol which is defined in an object we are
+ including in the link (i.e., DEF_REGULAR is set). At
+ this point we have not seen all the input files, so it is
+ possible that DEF_REGULAR is not set now but will be set
+ later (it is never cleared). We account for that
+ possibility below by storing information in the
+ pcrel_relocs_copied field of the hash table entry. */
+ if (info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && (! (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
+ .pc_relative)
+ || (h != NULL
+ && (! info->symbolic
+ || h->root.type == bfd_link_hash_defweak
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ {
+ /* When creating a shared object, we must copy these
+ reloc types into the output file. We create a reloc
+ section in dynobj and make room for this reloc. */
+ if (sreloc == NULL)
+ {
+ const char * name;
+
+ name = (bfd_elf_string_from_elf_section
+ (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ elf_section_data (sec)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ && strcmp (bfd_get_section_name (abfd, sec),
+ name + 5) == 0);
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ if (sreloc == NULL)
+ {
+ flagword flags;
+
+ sreloc = bfd_make_section (dynobj, name);
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ if (sreloc == NULL
+ || ! bfd_set_section_flags (dynobj, sreloc, flags)
+ || ! bfd_set_section_alignment (dynobj, sreloc, 2))
+ return FALSE;
+ }
+ }
+
+ sreloc->_raw_size += sizeof (Elf32_External_Rela);
+
+ /* If we are linking with -Bsymbolic, and this is a
+ global symbol, we count the number of PC relative
+ relocations we have entered for this symbol, so that
+ we can discard them again if the symbol is later
+ defined by a regular object. Note that this function
+ is only called if we are using an elf_sh linker
+ hash table, which means that h is really a pointer to
+ an elf32_mn10300_link_hash_entry. */
+ if (h != NULL
+ && (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
+ .pc_relative))
+ {
+ struct elf32_mn10300_link_hash_entry *eh;
+ struct elf_mn10300_pcrel_relocs_copied *p;
+
+ eh = (struct elf32_mn10300_link_hash_entry *) h;
+
+ for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
+ if (p->section == sreloc)
+ break;
+
+ if (p == NULL)
+ {
+ p = ((struct elf_mn10300_pcrel_relocs_copied *)
+ bfd_alloc (dynobj, sizeof *p));
+ if (p == NULL)
+ return FALSE;
+
+ p->next = eh->pcrel_relocs_copied;
+ eh->pcrel_relocs_copied = p;
+ p->section = sreloc;
+ p->count = 0;
+ }
+
+ ++p->count;
+ }
+ }
+
+ break;
}
}
static bfd_reloc_status_type
mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section, contents, offset, value,
- addend, info, sym_sec, is_local)
+ addend, h, symndx, info, sym_sec, is_local)
reloc_howto_type *howto;
bfd *input_bfd;
bfd *output_bfd ATTRIBUTE_UNUSED;
bfd_vma offset;
bfd_vma value;
bfd_vma addend;
+ struct elf_link_hash_entry * h;
+ unsigned long symndx;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
asection *sym_sec ATTRIBUTE_UNUSED;
int is_local ATTRIBUTE_UNUSED;
{
unsigned long r_type = howto->type;
bfd_byte *hit_data = contents + offset;
+ bfd * dynobj;
+ bfd_vma * local_got_offsets;
+ asection * sgot;
+ asection * splt;
+ asection * sreloc;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+
+ sgot = NULL;
+ splt = NULL;
+ sreloc = NULL;
switch (r_type)
{
return bfd_reloc_ok;
case R_MN10300_32:
+ if (info->shared
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ Elf_Internal_Rela outrel;
+ bfd_boolean skip, relocate;
+
+ /* When generating a shared object, these relocations are
+ copied into the output file to be resolved at run
+ time. */
+ if (sreloc == NULL)
+ {
+ const char * name;
+
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd,
+ elf_elfheader (input_bfd)->e_shstrndx,
+ elf_section_data (input_section)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ && strcmp (bfd_get_section_name (input_bfd,
+ input_section),
+ name + 5) == 0);
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ BFD_ASSERT (sreloc != NULL);
+ }
+
+ skip = FALSE;
+
+ if (elf_section_data (input_section)->sec_info == NULL
+ || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
+ outrel.r_offset = offset;
+ else
+ {
+ bfd_vma off;
+
+ off = (_bfd_stab_section_offset
+ (output_bfd, & elf_hash_table (info)->stab_info,
+ input_section,
+ & elf_section_data (input_section)->sec_info,
+ offset));
+ if (off == (bfd_vma) -1)
+ skip = TRUE;
+ outrel.r_offset = off;
+ }
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ {
+ memset (&outrel, 0, sizeof outrel);
+ relocate = FALSE;
+ }
+ else
+ {
+ /* h->dynindx may be -1 if this symbol was marked to
+ become local. */
+ if (h == NULL
+ || ((info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) != 0))
+ {
+ relocate = TRUE;
+ outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
+ outrel.r_addend = value + addend;
+ }
+ else
+ {
+ BFD_ASSERT (h->dynindx != -1);
+ relocate = FALSE;
+ outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
+ outrel.r_addend = value + addend;
+ }
+ }
+
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ (((Elf32_External_Rela *)
+ sreloc->contents)
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
+
+ /* If this reloc is against an external symbol, we do
+ not want to fiddle with the addend. Otherwise, we
+ need to include the symbol value so that it becomes
+ an addend for the dynamic reloc. */
+ if (! relocate)
+ return bfd_reloc_ok;
+ }
value += addend;
bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
return bfd_reloc_ok;
case R_MN10300_PCREL32:
+ if (info->shared
+ && (input_section->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && h->dynindx != -1
+ && (! info->symbolic
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ {
+ Elf_Internal_Rela outrel;
+ bfd_boolean skip;
+
+ /* When generating a shared object, these relocations
+ are copied into the output file to be resolved at run
+ time. */
+
+ if (sreloc == NULL)
+ {
+ const char * name;
+
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd,
+ elf_elfheader (input_bfd)->e_shstrndx,
+ elf_section_data (input_section)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ && strcmp (bfd_get_section_name (input_bfd,
+ input_section),
+ name + 5) == 0);
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ BFD_ASSERT (sreloc != NULL);
+ }
+
+ skip = FALSE;
+
+ if (elf_section_data (input_section)->sec_info == NULL
+ || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
+ outrel.r_offset = offset;
+ else
+ {
+ bfd_vma off;
+
+ off = (_bfd_stab_section_offset
+ (output_bfd, & elf_hash_table (info)->stab_info,
+ input_section,
+ & elf_section_data (input_section)->sec_info,
+ offset));
+ if (off == (bfd_vma) -1)
+ skip = TRUE;
+ outrel.r_offset = off;
+ }
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ else
+ {
+ BFD_ASSERT (h != NULL && h->dynindx != -1);
+ outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_PCREL32);
+ outrel.r_addend = addend;
+ }
+
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ (((Elf32_External_Rela *)
+ sreloc->contents)
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
+
+ return bfd_reloc_ok;
+ }
+
value -= (input_section->output_section->vma
+ input_section->output_offset);
value -= offset;
case R_MN10300_GNU_VTENTRY:
return bfd_reloc_ok;
+ case R_MN10300_GOTPC32:
+ /* Use global offset table as symbol value. */
+
+ value = bfd_get_section_by_name (dynobj,
+ ".got")->output_section->vma;
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_GOTPC16:
+ /* Use global offset table as symbol value. */
+
+ value = bfd_get_section_by_name (dynobj,
+ ".got")->output_section->vma;
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ if ((long) value > 0xffff || (long) value < -0x10000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_GOTOFF32:
+ value -= bfd_get_section_by_name (dynobj,
+ ".got")->output_section->vma;
+ value += addend;
+
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_GOTOFF24:
+ value -= bfd_get_section_by_name (dynobj,
+ ".got")->output_section->vma;
+ value += addend;
+
+ if ((long) value > 0x7fffff || (long) value < -0x800000)
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, value, hit_data);
+ bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
+ bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
+ return bfd_reloc_ok;
+
+ case R_MN10300_GOTOFF16:
+ value -= bfd_get_section_by_name (dynobj,
+ ".got")->output_section->vma;
+ value += addend;
+
+ if ((long) value > 0xffff || (long) value < -0x10000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_PLT32:
+ if (h != NULL
+ && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
+ && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ asection * splt;
+
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+
+ value = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset) - value;
+ }
+
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_PLT16:
+ if (h != NULL
+ && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
+ && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ asection * splt;
+
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+
+ value = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset) - value;
+ }
+
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ if ((long) value > 0xffff || (long) value < -0x10000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10300_GOT32:
+ case R_MN10300_GOT24:
+ case R_MN10300_GOT16:
+ {
+ asection * sgot;
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+
+ if (h != NULL)
+ {
+ bfd_vma off;
+
+ off = h->got.offset;
+ BFD_ASSERT (off != (bfd_vma) -1);
+
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || (info->shared
+ && (info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally, or the symbol was forced to be local
+ because of a version file. We must initialize
+ this entry in the global offset table.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ bfd_put_32 (output_bfd, value,
+ sgot->contents + off);
+
+ value = sgot->output_offset + off;
+ }
+ else
+ {
+ bfd_vma off;
+
+ off = elf_local_got_offsets (input_bfd)[symndx];
+
+ bfd_put_32 (output_bfd, value, sgot->contents + off);
+
+ if (info->shared)
+ {
+ asection * srelgot;
+ Elf_Internal_Rela outrel;
+
+ srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (srelgot != NULL);
+
+ outrel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + off);
+ outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
+ outrel.r_addend = value;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ (((Elf32_External_Rela *)
+ srelgot->contents)
+ + srelgot->reloc_count));
+ ++ srelgot->reloc_count;
+ }
+
+ value = sgot->output_offset + off;
+ }
+ }
+
+ value += addend;
+
+ if (r_type == R_MN10300_GOT32)
+ {
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+ }
+ else if (r_type == R_MN10300_GOT24)
+ {
+ if ((long) value > 0x7fffff || (long) value < -0x800000)
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, value & 0xff, hit_data);
+ bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
+ bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
+ return bfd_reloc_ok;
+ }
+ else if (r_type == R_MN10300_GOT16)
+ {
+ if ((long) value > 0xffff || (long) value < -0x10000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+ }
+ /* Fall through. */
+
default:
return bfd_reloc_notsupported;
}
|| h->root.root.type == bfd_link_hash_defweak)
{
sec = h->root.root.u.def.section;
- relocation = (h->root.root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ if ( r_type == R_MN10300_GOTPC32
+ || r_type == R_MN10300_GOTPC16
+ || (( r_type == R_MN10300_PLT32
+ || r_type == R_MN10300_PLT16)
+ && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
+ && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
+ && h->root.plt.offset != (bfd_vma) -1)
+ || (( r_type == R_MN10300_GOT32
+ || r_type == R_MN10300_GOT24
+ || r_type == R_MN10300_GOT16)
+ && elf_hash_table (info)->dynamic_sections_created
+ && (! info->shared
+ || (! info->symbolic && h->root.dynindx != -1)
+ || (h->root.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ || (info->shared
+ && ((! info->symbolic && h->root.dynindx != -1)
+ || (h->root.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ && ( r_type == R_MN10300_32
+ || r_type == R_MN10300_PCREL32)
+ && ((input_section->flags & SEC_ALLOC) != 0
+ /* DWARF will emit R_MN10300_32 relocations
+ in its sections against symbols defined
+ externally in shared libraries. We can't
+ do anything with them here. */
+ || ((input_section->flags & SEC_DEBUGGING) != 0
+ && (h->root.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) != 0))))
+ {
+ /* In these cases, we don't need the relocation
+ value. We check specially because in some
+ obscure cases sec->output_section will be NULL. */
+ relocation = 0;
+ }
+ else if (sec->output_section == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
+ bfd_get_filename (input_bfd), h->root.root.root.string,
+ bfd_get_section_name (input_bfd, input_section));
+ relocation = 0;
+ }
+ else
+ relocation = (h->root.root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
}
else if (h->root.root.type == bfd_link_hash_undefweak)
relocation = 0;
+ else if (info->shared && !info->symbolic && !info->no_undefined
+ && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
+ relocation = 0;
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.root.string, input_bfd,
- input_section, rel->r_offset, TRUE)))
+ input_section, rel->r_offset,
+ (!info->shared || info->no_undefined
+ || ELF_ST_VISIBILITY (h->root.other)))))
return FALSE;
relocation = 0;
}
input_section,
contents, rel->r_offset,
relocation, rel->r_addend,
+ (struct elf_link_hash_entry *)h,
+ r_symndx,
info, sec, h == NULL);
if (r != bfd_reloc_ok)
direct_calls counter. Else force "call" to
"calls" conversions. */
if (r_type == R_MN10300_PCREL32
+ || r_type == R_MN10300_PLT32
+ || r_type == R_MN10300_PLT16
|| r_type == R_MN10300_PCREL16)
hash->direct_calls++;
else
/* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
branch/call, also deal with "call" -> "calls" conversions and
insertion of prologue data into "call" instructions. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32)
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
{
bfd_vma value = symval;
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
+ && h != NULL
+ && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
+ && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
+ && h->root.plt.offset != (bfd_vma) -1)
+ {
+ asection * splt;
+
+ splt = bfd_get_section_by_name (elf_hash_table (link_info)
+ ->dynobj, ".plt");
+
+ value = ((splt->output_section->vma
+ + splt->output_offset
+ + h->root.plt.offset)
+ - (sec->output_section->vma
+ + sec->output_offset
+ + irel->r_offset));
+ }
+
/* If we've got a "call" instruction that needs to be turned
into a "calls" instruction, do so now. It saves a byte. */
if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_PLT32)
+ ? R_MN10300_PLT16 :
R_MN10300_PCREL16);
/* Delete two bytes of data. */
/* Try to turn a 32bit immediate, displacement or absolute address
into a 16bit immediate, displacement or absolute address. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32)
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
{
bfd_vma value = symval;
+
+ if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
+ {
+ asection * sgot;
+
+ sgot = bfd_get_section_by_name (elf_hash_table (link_info)
+ ->dynobj, ".got");
+
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
+ {
+ value = sgot->output_offset;
+
+ if (h)
+ value += h->root.got.offset;
+ else
+ value += (elf_local_got_offsets
+ (abfd)[ELF32_R_SYM (irel->r_info)]);
+ }
+ else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
+ value -= sgot->output_section->vma;
+ else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
+ value = (sgot->output_section->vma
+ - (sec->output_section->vma
+ + sec->output_offset
+ + irel->r_offset));
+ else
+ abort ();
+ }
+
value += irel->r_addend;
/* See if the value will fit in 24 bits.
equivalent instructions exists. */
if (code != 0x6b && code != 0x7b
&& code != 0x8b && code != 0x9b
+ && (ELF32_R_TYPE (irel->r_info)
+ != (int) R_MN10300_GOTPC32)
&& ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
|| (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
|| (code & 0x0f) == 0x0e))
/* Fix the relocation's type. */
irel->r_info =
ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF24
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT24 :
R_MN10300_24);
/* Delete one byte of data. */
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* Delete two bytes of data. */
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* The opcode got shorter too, so we have to fix the
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* Delete two bytes of data. */
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* The opcode got shorter too, so we have to fix the
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* Delete two bytes of data. */
/* Fix the relocation's type. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOT32)
+ ? R_MN10300_GOT16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTOFF32)
+ ? R_MN10300_GOTOFF16
+ : (ELF32_R_TYPE (irel->r_info)
+ == (int) R_MN10300_GOTPC32)
+ ? R_MN10300_GOTPC16 :
R_MN10300_16);
/* Delete two bytes of data. */
ret->stack_size = 0;
ret->movm_args = 0;
ret->movm_stack_size = 0;
+ ret->pcrel_relocs_copied = NULL;
ret->flags = 0;
}
return TRUE;
}
+#define PLT0_ENTRY_SIZE 15
+#define PLT_ENTRY_SIZE 20
+#define PIC_PLT_ENTRY_SIZE 24
+
+static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
+{
+ 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
+ 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
+ 0xf0, 0xf4, /* jmp (a0) */
+};
+
+static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
+{
+ 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
+ 0xf0, 0xf4, /* jmp (a0) */
+ 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
+ 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
+};
+
+static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
+{
+ 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
+ 0xf0, 0xf4, /* jmp (a0) */
+ 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
+ 0xf8, 0x22, 8, /* mov (8,a2),a0 */
+ 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
+ 0xf0, 0xf4, /* jmp (a0) */
+};
+
+/* Return size of the first PLT entry. */
+#define elf_mn10300_sizeof_plt0(info) \
+ (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
+
+/* Return size of a PLT entry. */
+#define elf_mn10300_sizeof_plt(info) \
+ (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
+
+/* Return offset of the PLT0 address in an absolute PLT entry. */
+#define elf_mn10300_plt_plt0_offset(info) 16
+
+/* Return offset of the linker in PLT0 entry. */
+#define elf_mn10300_plt0_linker_offset(info) 2
+
+/* Return offset of the GOT id in PLT0 entry. */
+#define elf_mn10300_plt0_gotid_offset(info) 9
+
+/* Return offset of the tempoline in PLT entry */
+#define elf_mn10300_plt_temp_offset(info) 8
+
+/* Return offset of the symbol in PLT entry. */
+#define elf_mn10300_plt_symbol_offset(info) 2
+
+/* Return offset of the relocation in PLT entry. */
+#define elf_mn10300_plt_reloc_offset(info) 11
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+/* Create dynamic sections when linking against a dynamic object. */
+
+static bfd_boolean
+_bfd_mn10300_elf_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ asection * s;
+ struct elf_backend_data * bed = get_elf_backend_data (abfd);
+ int ptralign = 0;
+
+ switch (bed->s->arch_size)
+ {
+ case 32:
+ ptralign = 2;
+ break;
+
+ case 64:
+ ptralign = 3;
+ break;
+
+ default:
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
+ .rel[a].bss sections. */
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ s = bfd_make_section (abfd,
+ bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, ptralign))
+ return FALSE;
+
+ if (! _bfd_mn10300_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 (abfd, relname);
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! 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
+ by dynamic objects, are referenced by regular objects, and are
+ not functions. We must allocate space for them in the process
+ 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 (abfd, ".dynbss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ return FALSE;
+
+ /* The .rel[a].bss section holds copy relocs. This section is not
+ normally needed. We need to create it here, though, so that the
+ linker will map it to an output section. We can't just create it
+ only if we need it, because we will not know whether we need it
+ until we have seen all the input files, and the first time the
+ main linker code calls BFD after examining all the input files
+ (size_dynamic_sections) the input sections have already been
+ mapped to the output sections. If the section turns out not to
+ be needed, we can discard it later. We will never need this
+ section when generating a shared object, since they do not use
+ copy relocs. */
+ if (! info->shared)
+ {
+ s = bfd_make_section (abfd,
+ (bed->default_use_rela_p
+ ? ".rela.bss" : ".rel.bss"));
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, ptralign))
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+\f
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
+
+static bfd_boolean
+_bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info * info;
+ struct elf_link_hash_entry * h;
+{
+ bfd * dynobj;
+ asection * s;
+ unsigned int power_of_two;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Make sure we know what is going on here. */
+ BFD_ASSERT (dynobj != NULL
+ && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
+ || h->weakdef != NULL
+ || ((h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_REF_REGULAR) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0)));
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ {
+ if (! info->shared
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
+ {
+ /* This case can occur if we saw a PLT reloc in an input
+ file, but the symbol was never referred to by a dynamic
+ object. In such a case, we don't actually need to build
+ a procedure linkage table, and we can just do a REL32
+ reloc instead. */
+ BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
+ return TRUE;
+ }
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+
+ s = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (s != NULL);
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->_raw_size == 0)
+ s->_raw_size += elf_mn10300_sizeof_plt0 (info);
+
+ /* If this symbol is not defined in a regular file, and we are
+ not generating a shared library, then set the symbol to this
+ location in the .plt. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (! info->shared
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+ }
+
+ h->plt.offset = s->_raw_size;
+
+ /* Make room for this entry. */
+ s->_raw_size += elf_mn10300_sizeof_plt (info);
+
+ /* 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");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += 4;
+
+ /* We also need to make an entry in the .rela.plt section. */
+
+ s = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += sizeof (Elf32_External_Rela);
+
+ return TRUE;
+ }
+
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->weakdef != NULL)
+ {
+ BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
+ || h->weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->weakdef->root.u.def.section;
+ h->root.u.def.value = h->weakdef->root.u.def.value;
+ return TRUE;
+ }
+
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. */
+
+ /* If we are creating a shared library, we must presume that the
+ only references to the symbol are via the global offset table.
+ For such cases we need not do anything here; the relocations will
+ be handled correctly by relocate_section. */
+ if (info->shared)
+ return TRUE;
+
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
+ 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
+ object will contain position independent code, so all references
+ from the dynamic object to this symbol will go through the global
+ offset table. The dynamic linker will use the .dynsym entry to
+ determine the address it must put in the global offset table, so
+ 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");
+ BFD_ASSERT (s != NULL);
+
+ /* We must generate a R_MN10300_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)
+ {
+ asection * srel;
+
+ srel = bfd_get_section_by_name (dynobj, ".rela.bss");
+ BFD_ASSERT (srel != NULL);
+ srel->_raw_size += sizeof (Elf32_External_Rela);
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ }
+
+ /* We need to figure out the alignment required for this symbol. I
+ have no idea how ELF linkers handle this. */
+ power_of_two = bfd_log2 (h->size);
+ if (power_of_two > 3)
+ power_of_two = 3;
+
+ /* Apply the required alignment. */
+ s->_raw_size = BFD_ALIGN (s->_raw_size,
+ (bfd_size_type) (1 << power_of_two));
+ if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ {
+ if (! bfd_set_section_alignment (dynobj, s, power_of_two))
+ return FALSE;
+ }
+
+ /* Define the symbol as being at this point in the section. */
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+
+ /* Increment the section size to make room for the symbol. */
+ s->_raw_size += h->size;
+
+ return TRUE;
+}
+
+/* This function is called via elf32_mn10300_link_hash_traverse if we are
+ creating a shared object with -Bsymbolic. It discards the space
+ allocated to copy PC relative relocs against symbols which are
+ defined in regular objects. We allocated space for them in the
+ check_relocs routine, but we won't fill them in in the
+ relocate_section routine. */
+
+static bfd_boolean
+_bfd_mn10300_elf_discard_copies (h, info)
+ struct elf32_mn10300_link_hash_entry *h;
+ struct bfd_link_info *info;
+{
+ struct elf_mn10300_pcrel_relocs_copied *s;
+
+ /* If a symbol has been forced local or we have found a regular
+ definition for the symbolic link case, then we won't be needing
+ any relocs. */
+ if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
+ || info->symbolic))
+ {
+ for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
+ s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
+ }
+
+ return TRUE;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static bfd_boolean
+_bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
+ bfd * output_bfd;
+ struct bfd_link_info * info;
+{
+ bfd * dynobj;
+ asection * s;
+ bfd_boolean plt;
+ bfd_boolean relocs;
+ bfd_boolean reltext;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+ else
+ {
+ /* We may have created entries in the .rela.got section.
+ However, if we are not creating the dynamic sections, we will
+ 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");
+ if (s != NULL)
+ s->_raw_size = 0;
+ }
+
+ /* If this is a -Bsymbolic shared link, then we need to discard all
+ PC relative relocs against symbols defined in a regular object.
+ We allocated space for them in the check_relocs routine, but we
+ will not fill them in in the relocate_section routine. */
+ if (info->shared && info->symbolic)
+ elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
+ _bfd_mn10300_elf_discard_copies,
+ info);
+
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ plt = FALSE;
+ relocs = FALSE;
+ reltext = FALSE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char * name;
+ bfd_boolean strip;
+
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
+
+ strip = FALSE;
+
+ if (strcmp (name, ".plt") == 0)
+ {
+ if (s->_raw_size == 0)
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ strip = TRUE;
+ else
+ /* Remember whether there is a PLT. */
+ plt = TRUE;
+ }
+ else if (strncmp (name, ".rela", 5) == 0)
+ {
+ if (s->_raw_size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ strip = TRUE;
+ }
+ else
+ {
+ asection * target;
+
+ /* Remember whether there are any reloc sections other
+ than .rela.plt. */
+ if (strcmp (name, ".rela.plt") != 0)
+ {
+ const char * outname;
+
+ relocs = TRUE;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL
+ entry. The entries in the .rela.plt section
+ really apply to the .got section, which we
+ created ourselves and so know is not readonly. */
+ outname = bfd_get_section_name (output_bfd,
+ s->output_section);
+ target = bfd_get_section_by_name (output_bfd, outname + 5);
+ if (target != NULL
+ && (target->flags & SEC_READONLY) != 0
+ && (target->flags & SEC_ALLOC) != 0)
+ reltext = TRUE;
+ }
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+ }
+ else if (strncmp (name, ".got", 4) != 0)
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+
+ if (strip)
+ {
+ _bfd_strip_section_from_output (info, s);
+ continue;
+ }
+
+ /* Allocate memory for the section contents. We use bfd_zalloc
+ here in case unused entries are not reclaimed before the
+ section's contents are written out. This should not happen,
+ but this way if it does, we get a R_MN10300_NONE reloc
+ instead of garbage. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ return FALSE;
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in _bfd_mn10300_elf_finish_dynamic_sections,
+ but we must add the entries now so that we get the correct
+ size for the .dynamic section. The DT_DEBUG entry is filled
+ in by the dynamic linker and used by the debugger. */
+ if (! info->shared)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
+ return FALSE;
+ }
+
+ if (plt)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
+ return FALSE;
+ }
+
+ if (relocs)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
+ sizeof (Elf32_External_Rela)))
+ return FALSE;
+ }
+
+ if (reltext)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static bfd_boolean
+_bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
+ bfd * output_bfd;
+ struct bfd_link_info * info;
+ struct elf_link_hash_entry * h;
+ Elf_Internal_Sym * sym;
+{
+ bfd * dynobj;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ if (h->plt.offset != (bfd_vma) -1)
+ {
+ asection * splt;
+ asection * sgot;
+ asection * srel;
+ bfd_vma plt_index;
+ bfd_vma got_offset;
+ Elf_Internal_Rela rel;
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ srel = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved. */
+ plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
+ / elf_mn10300_sizeof_plt (info));
+
+ /* Get the offset into the .got table of the entry that
+ corresponds to this function. Each .got entry is 4 bytes.
+ The first three are reserved. */
+ got_offset = (plt_index + 3) * 4;
+
+ /* Fill in the entry in the procedure linkage table. */
+ if (! info->shared)
+ {
+ memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
+ elf_mn10300_sizeof_plt (info));
+ bfd_put_32 (output_bfd,
+ (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset),
+ (splt->contents + h->plt.offset
+ + elf_mn10300_plt_symbol_offset (info)));
+
+ bfd_put_32 (output_bfd,
+ (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
+ (splt->contents + h->plt.offset
+ + elf_mn10300_plt_plt0_offset (info)));
+ }
+ else
+ {
+ memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
+ elf_mn10300_sizeof_plt (info));
+
+ bfd_put_32 (output_bfd, got_offset,
+ (splt->contents + h->plt.offset
+ + elf_mn10300_plt_symbol_offset (info)));
+ }
+
+ bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
+ (splt->contents + h->plt.offset
+ + elf_mn10300_plt_reloc_offset (info)));
+
+ /* Fill in the entry in the global offset table. */
+ bfd_put_32 (output_bfd,
+ (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset
+ + elf_mn10300_plt_temp_offset (info)),
+ sgot->contents + got_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+ rel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
+ rel.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *) srel->contents
+ + plt_index));
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ }
+
+ if (h->got.offset != (bfd_vma) -1)
+ {
+ asection * sgot;
+ asection * srel;
+ Elf_Internal_Rela rel;
+
+ /* 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");
+ BFD_ASSERT (sgot != NULL && srel != NULL);
+
+ rel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + (h->got.offset &~ 1));
+
+ /* If this is a -Bsymbolic link, and the symbol is defined
+ locally, we just want to emit a RELATIVE reloc. Likewise if
+ the symbol was forced to be local because of a version file.
+ The entry in the global offset table will already have been
+ initialized in the relocate_section function. */
+ if (info->shared
+ && (info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
+ {
+ rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
+ rel.r_addend = 0;
+ }
+
+ bfd_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *) srel->contents
+ + srel->reloc_count));
+ ++ srel->reloc_count;
+ }
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ {
+ asection * s;
+ Elf_Internal_Rela rel;
+
+ /* This symbol needs a copy reloc. Set it up. */
+ BFD_ASSERT (h->dynindx != -1
+ && (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");
+ BFD_ASSERT (s != NULL);
+
+ rel.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
+ rel.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *) s->contents
+ + s->reloc_count));
+ ++ s->reloc_count;
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+
+ return TRUE;
+}
+
+/* Finish up the dynamic sections. */
+
+static bfd_boolean
+_bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
+ bfd * output_bfd;
+ struct bfd_link_info * info;
+{
+ bfd * dynobj;
+ asection * sgot;
+ asection * sdyn;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (sgot != NULL);
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ asection * splt;
+ Elf32_External_Dyn * dyncon;
+ Elf32_External_Dyn * dynconend;
+
+ BFD_ASSERT (sdyn != NULL);
+
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ const char * name;
+ asection * s;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_PLTGOT:
+ name = ".got";
+ goto get_vma;
+
+ case DT_JMPREL:
+ name = ".rela.plt";
+ get_vma:
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_ptr = s->vma;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTRELSZ:
+ s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+ BFD_ASSERT (s != NULL);
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size;
+ else
+ dyn.d_un.d_val = s->_raw_size;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_RELASZ:
+ /* My reading of the SVR4 ABI indicates that the
+ procedure linkage table relocs (DT_JMPREL) should be
+ included in the overall relocs (DT_RELA). This is
+ what Solaris does. However, UnixWare can not handle
+ that case. Therefore, we override the DT_RELASZ entry
+ here to make it not include the JMPREL relocs. Since
+ the linker script arranges for .rela.plt to follow all
+ other relocation sections, we don't have to worry
+ about changing the DT_RELA entry. */
+ s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+ if (s != NULL)
+ {
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val -= s->_cooked_size;
+ else
+ dyn.d_un.d_val -= s->_raw_size;
+ }
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+ }
+ }
+
+ /* Fill in the first entry in the procedure linkage table. */
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ if (splt && splt->_raw_size > 0)
+ {
+ if (info->shared)
+ {
+ memcpy (splt->contents, elf_mn10300_pic_plt_entry,
+ elf_mn10300_sizeof_plt (info));
+ }
+ else
+ {
+ memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
+ bfd_put_32 (output_bfd,
+ sgot->output_section->vma + sgot->output_offset + 4,
+ splt->contents + elf_mn10300_plt0_gotid_offset (info));
+ bfd_put_32 (output_bfd,
+ sgot->output_section->vma + sgot->output_offset + 8,
+ splt->contents + elf_mn10300_plt0_linker_offset (info));
+ }
+
+ /* UnixWare sets the entsize of .plt to 4, although that doesn't
+ really seem like the right value. */
+ elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
+ }
+ }
+
+ /* Fill in the first three entries in the global offset table. */
+ if (sgot->_raw_size > 0)
+ {
+ if (sdyn == NULL)
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
+ else
+ bfd_put_32 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
+ }
+
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+
+ return TRUE;
+}
+
#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
#define TARGET_LITTLE_NAME "elf32-mn10300"
#define ELF_ARCH bfd_arch_mn10300
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_mn10300_elf_merge_private_bfd_data
+#define elf_backend_can_gc_sections 1
+#define elf_backend_create_dynamic_sections \
+ _bfd_mn10300_elf_create_dynamic_sections
+#define elf_backend_adjust_dynamic_symbol \
+ _bfd_mn10300_elf_adjust_dynamic_symbol
+#define elf_backend_size_dynamic_sections \
+ _bfd_mn10300_elf_size_dynamic_sections
+#define elf_backend_finish_dynamic_symbol \
+ _bfd_mn10300_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ _bfd_mn10300_elf_finish_dynamic_sections
+
+#define elf_backend_want_got_plt 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_want_plt_sym 0
+#define elf_backend_got_header_size 12
+#define elf_backend_plt_header_size PLT0_ENTRY_SIZE
+
#include "elf32-target.h"
projects / external / binutils.git / commitdiff