static void sparc64_elf_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
+static boolean sparc64_elf_check_relocs
+ PARAMS((bfd *, struct bfd_link_info *, asection *sec,
+ const Elf_Internal_Rela *));
+static boolean sparc64_elf_adjust_dynamic_symbol
+ PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
+static boolean sparc64_elf_size_dynamic_sections
+ PARAMS((bfd *, struct bfd_link_info *));
+static boolean sparc64_elf_adjust_dynindx
+ PARAMS((struct elf_link_hash_entry *, PTR));
+
static boolean sparc64_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static bfd_reloc_status_type sparc_elf_lox10_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static reloc_howto_type sparc64_elf_howto_table[] =
+static reloc_howto_type sparc64_elf_howto_table[] =
{
HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
+ HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", false,0,0x003fffff,true),
+ HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", false,0,0x000003ff,true),
+ HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", false,0,0x003fffff,true),
HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
/* Handle the WDISP16 reloc. */
static bfd_reloc_status_type
-sparc_elf_wdisp16_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
+sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
return bfd_reloc_ok;
}
+\f
+/* PLT/GOT stuff */
+
+/* FIXME: Do Delta Doc PLT entries. */
+
+/* We use five different formats, chosing an optimal form for the
+ code model used by the application/library. All of which provide
+ the exact same interface to ld.so.
+ FIXME, well, only three actually used right now -- fix up medlow
+ and fullany later. */
+
+/* Both the headers and the entries are icache aligned. */
+#define PLT_HEADER_SIZE 32
+#define PLT_ENTRY_SIZE 32
+#define GOT_RESERVED_ENTRIES 3
+
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
+
+/* Values for fixups:
+ 0 == got0
+ 1 == got0 - plt0
+ 2 == gotN
+ 3 == gotN - pltN
+ 4 == relN
+ 5 == gotN@got
+*/
+
+struct plt_template
+{
+ unsigned int insns[8];
+ struct
+ {
+ unsigned char reloc;
+ unsigned char value;
+ } fixup[8];
+};
+
+static const struct plt_template plt_medlow_header =
+{
+ {
+ 0x07000000, /* sethi %hi(got0),%g3 */
+ 0x8610E000, /* or %g3,%lo(got0),%g3 */
+ 0xC258E008, /* ldx [%g3+8],%g1 */
+ 0x81C04000, /* jmp %g1 */
+ 0xC258E010, /* ldx [%g3+16],%g1 */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_HI22, 0 },
+ { R_SPARC_LO10, 0 },
+ /* Rest null */
+ }
+};
+
+static const struct plt_template plt_medlow_entry =
+{
+ {
+ 0x03000000, /* sethi %hi(gotN),%g1 */
+ 0x05000000, /* sethi %hi(relN),%g2 */
+ 0xC2586000, /* ldx [%g1+%lo(gotN)],%g1 */
+ 0x8410A000, /* or %g2,%lo(relN),%g2 */
+ 0x81C04000, /* jmp %g1 */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_HI22, 2 },
+ { R_SPARC_HI22, 4 },
+ { R_SPARC_LO10, 2 },
+ { R_SPARC_LO10, 2 }
+ }
+};
+
+static const struct plt_template plt_medany_header =
+{
+ {
+ 0x07000000, /* sethi %hi(got0),%g3 */
+ 0x8610E000, /* or %g3,%lo(got0),%g3 */
+ 0x8600C004, /* add %g3,%g4,%g3 */
+ 0xC258E008, /* ldx [%g3+8],%g1 */
+ 0x81C04000, /* jmp %g1 */
+ 0xC258E010, /* ldx [%g3+16],%g1 */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ },
+ {
+ { R_SPARC_HI22, 0 },
+ { R_SPARC_LO10, 0 }
+ }
+};
+
+static const struct plt_template plt_medany_entry =
+{
+ {
+ 0x03000000, /* sethi %hi(gotN),%g1 */
+ 0x82106000, /* or %g1,%lo(gotN),%g1 */
+ 0xC2584004, /* ldx [%g1+%g4],%g1 */
+ 0x05000000, /* sethi %hi(relN),%g2 */
+ 0x81C04000, /* jmp %g1 */
+ 0x8410A000, /* or %g2,%lo(relN),%g2 */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_HI22, 2 },
+ { R_SPARC_LO10, 2 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_HI22, 4 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_LO10, 4 }
+ }
+};
+
+static const struct plt_template plt_fullany_header =
+{
+ {
+ 0x07000000, /* sethi %hi(got0-plt0),%g3 */
+ 0x8610E000, /* or %g3,%lo(got0-plt0),%g3 */
+ 0x86004003, /* add %g1,%g3,%g3 */
+ 0xC258C008, /* ldx [%g3+8],%g1 */
+ 0x81C04000, /* jmp %g1 */
+ 0xC258E010, /* ldx [%g3+16],%g1 */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_HI22, 1 },
+ { R_SPARC_LO10, 1 }
+ }
+};
+
+static const struct plt_template plt_fullany_entry =
+{
+ {
+ 0x83414000, /* rd %pc,%g1 */
+ 0x07000000, /* sethi %hi(gotN-pltN),%g3 */
+ 0x05000000, /* sethi %hi(relN),%g2 */
+ 0x8610E000, /* or %g3,%lo(gotN-pltN),%g3 */
+ 0xC2584003, /* ldx [%g1+%g3],%g1 */
+ 0x81C04000, /* jmp %g1 */
+ 0x8410A000, /* or %g2,%lo(relN),%g2 */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_HI22, 3 },
+ { R_SPARC_HI22, 4 },
+ { R_SPARC_LO10, 3 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_LO10, 4 }
+ }
+};
+
+static const struct plt_template plt_pic_header =
+{
+ {
+ 0xC25DE008, /* ldx [%l7+8],%g1 */
+ 0x81C04000, /* jmp %g1 */
+ 0xC25DE010, /* ldx [%l7+16],%g1 */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ { }
+};
+
+static const struct plt_template plt_pic_small_entry =
+{
+ {
+ 0xC25DE000, /* ldx [%l7+gotN@got],%g1 */
+ 0x05000000, /* sethi %hi(relN),%g2 */
+ 0x81C04017, /* jmp %g1+%l7 */
+ 0x8410A000, /* or %g2,%lo(relN),%g2 */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_13, 5 }, /* R_SPARC_GOT13 */
+ { R_SPARC_HI22, 4 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_LO10, 4 }
+ }
+};
+
+static const struct plt_template plt_pic_large_entry =
+{
+ {
+ 0x03000000, /* sethi %hi(gotN@got),%g1 */
+ 0x82106000, /* or %g1,%lo(gotN@got),%g1 */
+ 0xC2584017, /* ldx [%g1+%l7],%g1 */
+ 0x05000000, /* sethi %hi(relN),%g2 */
+ 0x81C04000, /* jmp %g1 */
+ 0x8410A000, /* or %g2,%lo(relN),%g2 */
+ 0x01000000, /* nop */
+ 0x01000000 /* nop */
+ },
+ {
+ { R_SPARC_HI22, 5 }, /* R_SPARC_GOT22 */
+ { R_SPARC_LO10, 5 }, /* R_SPARC_GOT10 */
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_HI22, 4 },
+ { R_SPARC_NONE, 0 },
+ { R_SPARC_LO10, 4 }
+ }
+};
+
+/* Build a plt entry given a template and values. */
+
+static boolean sparc64_elf_build_plt_entry(output_bfd, loc, tmpl, values)
+ bfd *output_bfd;
+ unsigned char *loc;
+ const struct plt_template *tmpl;
+ bfd_vma values[];
+{
+ int i;
+ for (i = 0; i < 8; ++i)
+ {
+ unsigned int insn = tmpl->insns[i];
+ bfd_vma value = values[tmpl->fixup[i].value];
+
+#if 1
+ switch (tmpl->fixup[i].reloc)
+ {
+ case R_SPARC_NONE:
+ break;
+ case R_SPARC_HI22:
+ insn |= (value >> 10) & 0x3fffff;
+ break;
+ case R_SPARC_LO10:
+ insn |= value & 0x3ff;
+ break;
+ case R_SPARC_13:
+ if ((bfd_signed_vma)value > 0xfff
+ || (bfd_signed_vma)value < -0x1000)
+ return false;
+ insn |= value & 0x1fff;
+ break;
+ default:
+ abort();
+ }
+#else
+ /* FIXME -- possibly use _bfd_final_link_relocate? */
+
+ howto = sparc64_elf_howto_table + tmpl->fixups[i].reloc;
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ &insn, 0, value, 0);
+ if (r != bfd_reloc_ok)
+ return false;
+#endif
+
+ bfd_put_32(output_bfd, insn, loc);
+ loc += 4;
+ }
+
+ return true;
+}
+\f
+/* Look through the relocs for a section during the first phase, and
+ allocate space in the global offset table or procedure linkage
+ table. */
+
+static boolean
+sparc64_elf_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+ bfd *dynobj;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_vma *local_got_offsets;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sgot;
+ asection *srelgot;
+ asection *sreloc;
+
+ if (info->relocateable || (sec->flags & SEC_DEBUGGING))
+ return true;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_offsets = elf_local_got_offsets (abfd);
+
+ sgot = NULL;
+ srelgot = NULL;
+ sreloc = NULL;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_SPARC_GOT10:
+ case R_SPARC_GOT13:
+ case R_SPARC_GOT22:
+ /* This symbol requires a global offset table entry. */
+
+ if (dynobj == NULL)
+ {
+ /* Create the .got section. */
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ if (! _bfd_elf_create_got_section (dynobj, info))
+ return false;
+ }
+
+ 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, 3))
+ 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_elf64_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ srelgot->_raw_size += sizeof (Elf64_External_Rela);
+ }
+ else
+ {
+ /* This is a global offset table entry for a local
+ symbol. */
+ if (local_got_offsets == NULL)
+ {
+ size_t size;
+ register 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_SPARC_RELATIVE reloc so that the
+ dynamic linker can adjust this GOT entry. */
+ srelgot->_raw_size += sizeof (Elf64_External_Rela);
+ }
+ }
+
+ sgot->_raw_size += 8;
+
+#if 0
+ /* Doesn't work for 64-bit -fPIC, since sethi/or builds
+ unsigned numbers. If we permit ourselves to modify
+ code so we get sethi/xor, this could work.
+ Question: do we consider conditionally re-enabling
+ this for -fpic, once we know about object code models? */
+ /* If the .got section is more than 0x1000 bytes, we add
+ 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
+ bit relocations have a greater chance of working. */
+ if (sgot->_raw_size >= 0x1000
+ && elf_hash_table (info)->hgot->root.u.def.value == 0)
+ elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
+#endif
+
+ break;
+
+ case R_SPARC_WPLT30:
+ case R_SPARC_PLT32:
+ case R_SPARC_HIPLT22:
+ case R_SPARC_LOPLT10:
+ case R_SPARC_PCPLT32:
+ case R_SPARC_PCPLT22:
+ case R_SPARC_PCPLT10:
+ case R_SPARC_PLT64:
+ /* 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 without
+ linking in any dynamic objects, in which case we don't
+ need to generate a procedure linkage table after all. */
+
+ if (h == NULL)
+ {
+ /* It does not make sense to have a procedure linkage
+ table entry for a local symbol. */
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf64_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ break;
+
+ case R_SPARC_PC10:
+ case R_SPARC_PC22:
+ case R_SPARC_PC_HH22:
+ case R_SPARC_PC_HM10:
+ case R_SPARC_PC_LM22:
+ if (h != NULL
+ && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+ /* Fall through. */
+ case R_SPARC_DISP8:
+ case R_SPARC_DISP16:
+ case R_SPARC_DISP32:
+ case R_SPARC_DISP64:
+ case R_SPARC_WDISP30:
+ case R_SPARC_WDISP22:
+ case R_SPARC_WDISP19:
+ case R_SPARC_WDISP16:
+ if (h == NULL)
+ break;
+ /* Fall through. */
+ case R_SPARC_8:
+ case R_SPARC_16:
+ case R_SPARC_32:
+ case R_SPARC_HI22:
+ case R_SPARC_22:
+ case R_SPARC_13:
+ case R_SPARC_LO10:
+ case R_SPARC_UA32:
+ case R_SPARC_10:
+ case R_SPARC_11:
+ case R_SPARC_64:
+ case R_SPARC_OLO10:
+ case R_SPARC_HH22:
+ case R_SPARC_HM10:
+ case R_SPARC_LM22:
+ case R_SPARC_7:
+ case R_SPARC_5:
+ case R_SPARC_6:
+ case R_SPARC_HIX22:
+ case R_SPARC_LOX10:
+ case R_SPARC_H44:
+ case R_SPARC_M44:
+ case R_SPARC_L44:
+ /* When creating a shared object, we must copy these relocs
+ into the output file. We create a reloc section in
+ dynobj and make room for the reloc.
+
+ But don't do this for debugging sections -- this shows up
+ with DWARF2 -- first because they are not loaded, and
+ second because DWARF sez the debug info is not to be
+ biased by the load address. */
+ if (info->shared && !(sec->flags & SEC_DEBUGGING))
+ {
+ 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, 3))
+ return false;
+ }
+ }
+
+ sreloc->_raw_size += sizeof (Elf64_External_Rela);
+ }
+ break;
+
+ case R_SPARC_REGISTER:
+ /* Nothing to do. */
+ break;
+
+ default:
+ (*_bfd_error_handler)("%s: check_relocs: unhandled reloc type %d",
+ bfd_get_filename(abfd),
+ ELF64_R_TYPE (rel->r_info));
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* 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 boolean
+sparc64_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
+ (although we could actually do it here). The STT_NOTYPE
+ condition is a hack specifically for the Oracle libraries
+ delivered for Solaris; for some inexplicable reason, they define
+ some of their functions as STT_NOTYPE when they really should be
+ STT_FUNC. */
+ if (h->type == STT_FUNC
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
+ || (h->type == STT_NOTYPE
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags & SEC_CODE) != 0))
+ {
+ if (! elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* This case can occur if we saw a WPLT30 reloc in an input
+ file, but none of the input files were dynamic objects.
+ In such a case, we don't actually need to build a
+ procedure linkage table, and we can just do a WDISP30
+ reloc instead. */
+ BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
+ return true;
+ }
+
+ s = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (s != NULL);
+
+ /* The first four bit in .plt is reserved. */
+ if (s->_raw_size == 0)
+ s->_raw_size = PLT_HEADER_SIZE;
+
+ /* 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 += PLT_ENTRY_SIZE;
+
+ /* 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 += 8;
+
+ /* 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 (Elf64_External_Rela);
+
+ /* The procedure linkage table size is bounded by the magnitude
+ of the offset we can describe in the entry. */
+ if (s->_raw_size >= (bfd_vma)1 << 32)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ 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;
+
+ /* 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_SPARC_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
+ .rel.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 (Elf64_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. 16-bytes is the size
+ of the largest type that requires hard alignment -- long double. */
+ power_of_two = bfd_log2 (h->size);
+ if (power_of_two > 4)
+ power_of_two = 4;
+
+ /* 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;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static boolean
+sparc64_elf_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *s;
+ boolean reltext;
+ boolean relplt;
+
+ 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;
+ }
+
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ reltext = false;
+ relplt = false;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char *name;
+ 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 (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 to handle .rela.bss and
+ .rel.plt. We must create it in
+ create_dynamic_sections, because it 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
+ {
+ const char *outname;
+ asection *target;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL entry. */
+ 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)
+ reltext = true;
+
+ if (strcmp (name, ".rela.plt") == 0)
+ relplt = 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 (strcmp (name, ".plt") != 0
+ && strncmp (name, ".got", 4) != 0)
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (strip)
+ {
+ asection **spp;
+
+ for (spp = &s->output_section->owner->sections;
+ *spp != s->output_section;
+ spp = &(*spp)->next)
+ ;
+ *spp = s->output_section->next;
+ --s->output_section->owner->section_count;
+
+ continue;
+ }
+
+ /* Allocate memory for the section contents. */
+ s->contents = (bfd_byte *) bfd_alloc (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 sparc64_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_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
+ return false;
+ }
+
+ if (relplt)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_SPARC_PLTFMT,
+ (info->shared != 0) + 1))
+ return false;
+ }
+
+ if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
+ sizeof (Elf64_External_Rela)))
+ return false;
+
+ if (reltext)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return false;
+ }
+ }
+
+ /* If we are generating a shared library, we generate a section
+ symbol for each output section for which we might need to copy
+ relocs. These are local symbols, which means that they must come
+ first in the dynamic symbol table. That means we must increment
+ the dynamic symbol index of every other dynamic symbol. */
+ if (info->shared)
+ {
+ int c;
+
+ c = 0;
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) != 0
+ || (s->flags & SEC_ALLOC) == 0)
+ continue;
+
+ elf_section_data (s)->dynindx = c + 1;
+
+ /* These symbols will have no names, so we don't need to
+ fiddle with dynstr_index. */
+
+ ++c;
+ }
+
+ elf_link_hash_traverse (elf_hash_table (info),
+ sparc64_elf_adjust_dynindx,
+ (PTR) &c);
+ elf_hash_table (info)->dynsymcount += c;
+ }
+
+ return true;
+}
+
+/* Increment the index of a dynamic symbol by a given amount. Called
+ via elf_link_hash_traverse. */
+
+static boolean
+sparc64_elf_adjust_dynindx (h, cparg)
+ struct elf_link_hash_entry *h;
+ PTR cparg;
+{
+ int *cp = (int *) cparg;
+
+ if (h->dynindx != -1)
+ h->dynindx += *cp;
+ return true;
+}
+
\f
/* Relocate a SPARC64 ELF section. */
Elf_Internal_Sym *local_syms;
asection **local_sections;
{
+ bfd *dynobj;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
+ bfd_vma *local_got_offsets;
+ bfd_vma got_base;
+ asection *sgot;
+ asection *splt;
+ asection *sreloc;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
+ dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+
+ if (elf_hash_table(info)->hgot == NULL)
+ got_base = 0;
+ else
+ got_base = elf_hash_table (info)->hgot->root.u.def.value;
+
+ sgot = splt = sreloc = NULL;
rel = relocs;
relend = relocs + input_section->reloc_count;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
+ boolean skip_it = false;
sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+
+ switch (r_type)
+ {
+ case R_SPARC_WPLT30:
+ case R_SPARC_PLT32:
+ case R_SPARC_HIPLT22:
+ case R_SPARC_LOPLT10:
+ case R_SPARC_PCPLT32:
+ case R_SPARC_PCPLT22:
+ case R_SPARC_PCPLT10:
+ case R_SPARC_PLT64:
+ if (h->plt_offset != (bfd_vma) -1)
+ skip_it = true;
+ break;
+
+ case R_SPARC_GOT10:
+ case R_SPARC_GOT13:
+ case R_SPARC_GOT22:
+ 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)))
+ skip_it = true;
+ break;
+
+ case R_SPARC_PC10:
+ case R_SPARC_PC22:
+ case R_SPARC_PC_HH22:
+ case R_SPARC_PC_HM10:
+ case R_SPARC_PC_LM22:
+ if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
+ break;
+ /* FALLTHRU */
+
+ case R_SPARC_8:
+ case R_SPARC_16:
+ case R_SPARC_32:
+ case R_SPARC_DISP8:
+ case R_SPARC_DISP16:
+ case R_SPARC_DISP32:
+ case R_SPARC_WDISP30:
+ case R_SPARC_WDISP22:
+ case R_SPARC_HI22:
+ case R_SPARC_22:
+ case R_SPARC_13:
+ case R_SPARC_LO10:
+ case R_SPARC_UA32:
+ case R_SPARC_10:
+ case R_SPARC_11:
+ case R_SPARC_64:
+ case R_SPARC_OLO10:
+ case R_SPARC_HH22:
+ case R_SPARC_HM10:
+ case R_SPARC_LM22:
+ case R_SPARC_WDISP19:
+ case R_SPARC_WDISP16:
+ case R_SPARC_7:
+ case R_SPARC_5:
+ case R_SPARC_6:
+ case R_SPARC_DISP64:
+ case R_SPARC_HIX22:
+ case R_SPARC_LOX10:
+ case R_SPARC_H44:
+ case R_SPARC_M44:
+ case R_SPARC_L44:
+ if (info->shared
+ && ((!info->symbolic && h->dynindx != -1)
+ || !(h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR)))
+ skip_it = true;
+ break;
+ }
+
+ if (skip_it)
+ {
+ /* 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
+ {
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
}
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
+ else if (info->shared && !info->symbolic)
+ relocation = 0;
else
{
if (! ((*info->callbacks->undefined_symbol)
}
}
+ /* When generating a shared object, these relocations are copied
+ into the output file to be resolved at run time. */
+ if (info->shared && !(input_section->flags & SEC_DEBUGGING))
+ {
+ switch (r_type)
+ {
+ case R_SPARC_PC10:
+ case R_SPARC_PC22:
+ case R_SPARC_PC_HH22:
+ case R_SPARC_PC_HM10:
+ case R_SPARC_PC_LM22:
+ if (h != NULL
+ && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
+ break;
+ /* Fall through. */
+ case R_SPARC_DISP8:
+ case R_SPARC_DISP16:
+ case R_SPARC_DISP32:
+ case R_SPARC_WDISP30:
+ case R_SPARC_WDISP22:
+ case R_SPARC_WDISP19:
+ case R_SPARC_WDISP16:
+ case R_SPARC_DISP64:
+ if (h == NULL)
+ break;
+ /* Fall through. */
+ case R_SPARC_8:
+ case R_SPARC_16:
+ case R_SPARC_32:
+ case R_SPARC_HI22:
+ case R_SPARC_22:
+ case R_SPARC_13:
+ case R_SPARC_LO10:
+ case R_SPARC_UA32:
+ case R_SPARC_10:
+ case R_SPARC_11:
+ case R_SPARC_64:
+ case R_SPARC_OLO10:
+ case R_SPARC_HH22:
+ case R_SPARC_HM10:
+ case R_SPARC_LM22:
+ case R_SPARC_7:
+ case R_SPARC_5:
+ case R_SPARC_6:
+ case R_SPARC_HIX22:
+ case R_SPARC_LOX10:
+ case R_SPARC_H44:
+ case R_SPARC_M44:
+ case R_SPARC_L44:
+ {
+ Elf_Internal_Rela outrel;
+ boolean skip;
+
+ if (sreloc == NULL)
+ {
+ const char *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)->stab_info == NULL)
+ outrel.r_offset = rel->r_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)->stab_info,
+ rel->r_offset));
+ if (off == MINUS_ONE)
+ 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);
+ /* h->dynindx may be -1 if the symbol was marked to
+ become local. */
+ else if (h != NULL
+ && ((! info->symbolic && h->dynindx != -1)
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ {
+ BFD_ASSERT (h->dynindx != -1);
+ outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
+ outrel.r_addend = rel->r_addend;
+ }
+ else
+ {
+ if (r_type == R_SPARC_64)
+ {
+ outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
+ outrel.r_addend = relocation + rel->r_addend;
+ }
+ else
+ {
+ long indx;
+
+ if (h == NULL)
+ sec = local_sections[r_symndx];
+ else
+ {
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined
+ || (h->root.type
+ == bfd_link_hash_defweak));
+ sec = h->root.u.def.section;
+ }
+ if (sec != NULL && bfd_is_abs_section (sec))
+ indx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ else
+ {
+ asection *osec;
+
+ osec = sec->output_section;
+ indx = elf_section_data (osec)->dynindx;
+ BFD_ASSERT (indx > 0);
+ }
+
+ outrel.r_info = ELF64_R_INFO (indx, r_type);
+ outrel.r_addend = relocation + rel->r_addend;
+ }
+ }
+
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel,
+ (((Elf64_External_Rela *)
+ sreloc->contents)
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
+
+ /* This reloc will be computed at runtime, so there's no
+ need to do anything now, unless this is a RELATIVE
+ reloc in an unallocated section. */
+ if (skip
+ || (input_section->flags & SEC_ALLOC) != 0
+ || ELF64_R_TYPE (outrel.r_info) != R_SPARC_RELATIVE)
+ continue;
+ }
+ break;
+ }
+ }
+
switch (r_type)
{
+ case R_SPARC_GOT10:
+ case R_SPARC_GOT13:
+ case R_SPARC_GOT22:
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ if (sgot == NULL)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ }
+
+ if (h != NULL)
+ {
+ bfd_vma 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.
+ Since the offset must always be a multiple of 8, we
+ use the least significant bit to record whether we
+ have initialized it already.
+
+ 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. */
+
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_64 (output_bfd, relocation,
+ sgot->contents + off);
+ h->got_offset |= 1;
+ }
+ }
+ relocation = sgot->output_offset + off - got_base;
+ }
+ else
+ {
+ bfd_vma off;
+
+ BFD_ASSERT (local_got_offsets != NULL);
+ off = local_got_offsets[r_symndx];
+ BFD_ASSERT (off != (bfd_vma) -1);
+
+ /* The offset must always be a multiple of 8. We use
+ the least significant bit to record whether we have
+ already processed this entry. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_64 (output_bfd, relocation, sgot->contents + off);
+ local_got_offsets[r_symndx] |= 1;
+
+ if (info->shared)
+ {
+ asection *srelgot;
+ Elf_Internal_Rela outrel;
+
+ /* We need to generate a R_SPARC_RELATIVE reloc
+ for the dynamic linker. */
+ 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 = ELF64_R_INFO (0, R_SPARC_RELATIVE);
+ outrel.r_addend = relocation;
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel,
+ (((Elf64_External_Rela *)
+ srelgot->contents)
+ + srelgot->reloc_count));
+ ++srelgot->reloc_count;
+ }
+ }
+ relocation = sgot->output_offset + off - got_base;
+ }
+ goto do_default;
+
+ case R_SPARC_WPLT30:
+ case R_SPARC_PLT32:
+ case R_SPARC_HIPLT22:
+ case R_SPARC_LOPLT10:
+ case R_SPARC_PCPLT32:
+ case R_SPARC_PCPLT22:
+ case R_SPARC_PCPLT10:
+ case R_SPARC_PLT64:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table. */
+ BFD_ASSERT (h != NULL);
+
+ if (h->plt_offset == (bfd_vma) -1)
+ {
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code, or when
+ using -Bsymbolic. */
+ goto do_default;
+ }
+
+ if (splt == NULL)
+ {
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (splt != NULL);
+ }
+
+ relocation = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt_offset);
+ goto do_default;
+
case R_SPARC_OLO10:
{
bfd_vma x;
break;
default:
+ do_default:
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
break;
}
- if (r != bfd_reloc_ok)
+ switch (r)
{
- switch (r)
- {
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
+ case bfd_reloc_ok:
+ break;
- if (h != NULL)
- name = h->root.root.string;
- else
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+
+ case bfd_reloc_overflow:
+ {
+ const char *name;
+
+ if (h != NULL)
+ {
+ if (h->root.type == bfd_link_hash_undefweak
+ && howto->pc_relative)
{
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name));
- if (name == NULL)
- return false;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
+ /* Assume this is a call protected by other code that
+ detect the symbol is undefined. If this is the case,
+ we can safely ignore the overflow. If not, the
+ program is hosed anyway, and a little warning isn't
+ going to help. */
+ break;
}
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
+
+ name = h->root.root.string;
+ }
+ else
+ {
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name));
+ if (name == NULL)
return false;
+ if (*name == '\0')
+ name = bfd_section_name (input_bfd, sec);
}
- break;
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ }
+ break;
+ }
+ }
+
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static boolean
+sparc64_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 *sgotplt;
+ asection *srela;
+ Elf_Internal_Rela rela;
+ bfd_vma values[6];
+ bfd_vma plt0, pltN, got0, gotN, plt_index, got_offset;
+ const struct plt_template *plt_tmpl;
+
+ /* 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");
+ sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ srela = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (splt != NULL && sgotplt != NULL && srela != NULL);
+
+ /* Fill in the various values the plt entry might care about,
+ as detailed above. */
+
+ plt0 = splt->output_section->vma + splt->output_offset;
+ pltN = plt0 + h->plt_offset;
+ plt_index = h->plt_offset / PLT_ENTRY_SIZE - 1;
+ got0 = sgotplt->output_section->vma + sgotplt->output_offset;
+ got_offset = (plt_index + GOT_RESERVED_ENTRIES) * 8;
+ gotN = got0 + got_offset;
+
+ values[0] = got0;
+ values[1] = got0 - plt0;
+ values[5] = got_offset;
+ values[2] = gotN;
+ values[3] = gotN - pltN;
+ values[4] = plt_index * sizeof(Elf64_External_Rela);
+
+ /* Fill in the entry in the procedure linkage table. */
+
+ if (info->shared)
+ if (got_offset < 0x1000)
+ plt_tmpl = &plt_pic_small_entry;
+ else
+ plt_tmpl = &plt_pic_large_entry;
+ else
+ /* FIXME -- learn how to select code models here. */
+ plt_tmpl = &plt_medany_entry;
+
+ sparc64_elf_build_plt_entry(output_bfd, splt->contents + h->plt_offset,
+ plt_tmpl, values);
+
+ if (plt_index == 0)
+ {
+ /* We also need to fill in the plt header, but we only need to
+ do it once. Choose to do it while we do the first plt entry. */
+
+ sparc64_elf_build_plt_entry(output_bfd, splt->contents,
+ (info->shared
+ ? &plt_pic_header
+ : &plt_medany_header),
+ values);
+ }
+
+ /* Fill in the entry in the .got.plt section. */
+
+ bfd_put_64 (output_bfd, (info->shared ? plt0-got0 : plt0),
+ sgotplt->contents + got_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+
+ rela.r_offset = gotN;
+ rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
+ rela.r_addend = 0;
+ bfd_elf64_swap_reloca_out (output_bfd, &rela,
+ ((Elf64_External_Rela *) srela->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 *srela;
+ Elf_Internal_Rela rela;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ srela = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (sgot != NULL && srela != NULL);
+
+ rela.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))
+ {
+ asection *sec = h->root.u.def.section;
+ rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
+ rela.r_addend = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else
+ {
+ bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset);
+ rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
+ rela.r_addend = 0;
+ }
+
+ bfd_elf64_swap_reloca_out (output_bfd, &rela,
+ ((Elf64_External_Rela *) srela->contents
+ + srela->reloc_count));
+ ++srela->reloc_count;
+ }
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ {
+ asection *s;
+ Elf_Internal_Rela rela;
+
+ /* This symbols needs a copy reloc. Set it up. */
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ s = bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rela.bss");
+ BFD_ASSERT (s != NULL);
+
+ rela.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY);
+ rela.r_addend = 0;
+ bfd_elf64_swap_reloca_out (output_bfd, &rela,
+ ((Elf64_External_Rela *) s->contents
+ + s->reloc_count));
+ ++s->reloc_count;
+ }
+
+ /* Mark some specially defined symbols as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
+ || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+
+ return true;
+}
+
+/* Finish up the dynamic sections. */
+
+static boolean
+sparc64_elf_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *sdyn;
+ asection *sgot;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ asection *splt;
+ Elf64_External_Dyn *dyncon, *dynconend;
+
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (splt != NULL && sdyn != NULL);
+
+ dyncon = (Elf64_External_Dyn *) sdyn->contents;
+ dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ boolean size;
+
+ bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ case DT_PLTGOT: name = ".got"; size = false; break;
+ case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
+ case DT_JMPREL: name = ".rela.plt"; size = false; break;
+ default: name = NULL; size = false; break;
+ }
+
+ if (name != NULL)
+ {
+ asection *s;
+
+ s = bfd_get_section_by_name (output_bfd, name);
+ if (s == NULL)
+ dyn.d_un.d_val = 0;
+ else
+ {
+ if (! size)
+ dyn.d_un.d_ptr = s->vma;
+ else
+ {
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size;
+ else
+ dyn.d_un.d_val = s->_raw_size;
+ }
+ }
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
}
}
+
+ elf_section_data (splt->output_section)->this_hdr.sh_entsize =
+ PLT_ENTRY_SIZE;
+ }
+
+ /* Set the first entry in the global offset table to the address of
+ the dynamic section. */
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (sgot != NULL);
+ if (sgot->_raw_size > 0)
+ {
+ if (sdyn == NULL)
+ bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
+ else
+ bfd_put_64 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ sgot->contents);
+ }
+
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
+
+ if (info->shared)
+ {
+ asection *sdynsym;
+ asection *s;
+ Elf_Internal_Sym sym;
+ int c;
+
+ /* Set up the section symbols for the output sections. */
+
+ sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
+ BFD_ASSERT (sdynsym != NULL);
+
+ sym.st_size = 0;
+ sym.st_name = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ sym.st_other = 0;
+
+ c = 0;
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ {
+ int indx;
+
+ if (elf_section_data (s)->dynindx == 0)
+ continue;
+
+ sym.st_value = s->vma;
+
+ indx = elf_section_data (s)->this_idx;
+ BFD_ASSERT (indx > 0);
+ sym.st_shndx = indx;
+
+ bfd_elf64_swap_symbol_out (output_bfd, &sym,
+ (PTR) (((Elf64_External_Sym *)
+ sdynsym->contents)
+ + elf_section_data (s)->dynindx));
+
+ ++c;
+ }
+
+ /* Set the sh_info field of the output .dynsym section to the
+ index of the first global symbol. */
+ elf_section_data (sdynsym->output_section)->this_hdr.sh_info = c + 1;
}
return true;
}
+\f
/* Set the right machine number for a SPARC64 ELF file. */
static boolean
#define ELF_MACHINE_CODE EM_SPARC64
#define ELF_MAXPAGESIZE 0x100000
-#define elf_info_to_howto sparc64_elf_info_to_howto
-#define bfd_elf64_bfd_reloc_type_lookup sparc64_elf_reloc_type_lookup
-#define elf_backend_relocate_section sparc64_elf_relocate_section
-#define elf_backend_object_p sparc64_elf_object_p
+#define elf_info_to_howto \
+ sparc64_elf_info_to_howto
+#define bfd_elf64_bfd_reloc_type_lookup \
+ sparc64_elf_reloc_type_lookup
+
+#define elf_backend_create_dynamic_sections \
+ _bfd_elf_create_dynamic_sections
+#define elf_backend_check_relocs \
+ sparc64_elf_check_relocs
+#define elf_backend_adjust_dynamic_symbol \
+ sparc64_elf_adjust_dynamic_symbol
+#define elf_backend_size_dynamic_sections \
+ sparc64_elf_size_dynamic_sections
+#define elf_backend_relocate_section \
+ sparc64_elf_relocate_section
+#define elf_backend_finish_dynamic_symbol \
+ sparc64_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ sparc64_elf_finish_dynamic_sections
+
+#define elf_backend_object_p \
+ sparc64_elf_object_p
+
+#define elf_backend_want_got_plt 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_want_plt_sym 1
+#define elf_backend_plt_alignment 5
#include "elf64-target.h"
projects / binutils-gdb.git / commitdiff