+#define BFD_DEBUG_PIC(...)
+
+struct arc_relocation_data
+{
+ bfd_vma reloc_offset;
+ bfd_vma reloc_addend;
+ bfd_vma got_offset_value;
+
+ bfd_vma sym_value;
+ asection * sym_section;
+
+ reloc_howto_type *howto;
+
+ asection * input_section;
+
+ bfd_vma sdata_begin_symbol_vma;
+ bfd_boolean sdata_begin_symbol_vma_set;
+ bfd_vma got_symbol_vma;
+
+ bfd_boolean should_relocate;
+};
+
+static void
+debug_arc_reloc (struct arc_relocation_data reloc_data)
+{
+ PR_DEBUG ("Reloc type=%s, should_relocate = %s\n",
+ reloc_data.howto->name,
+ reloc_data.should_relocate ? "true" : "false");
+ PR_DEBUG (" offset = 0x%x, addend = 0x%x\n",
+ (unsigned int) reloc_data.reloc_offset,
+ (unsigned int) reloc_data.reloc_addend);
+ PR_DEBUG (" Symbol:\n");
+ PR_DEBUG (" value = 0x%08x\n",
+ (unsigned int) reloc_data.sym_value);
+ if (reloc_data.sym_section != NULL)
+ {
+ PR_DEBUG ("IN IF\n");
+ PR_DEBUG (
+ " section name = %s, output_offset 0x%08x",
+ reloc_data.sym_section->name,
+ (unsigned int) reloc_data.sym_section->output_offset);
+ if (reloc_data.sym_section->output_section != NULL)
+ {
+ PR_DEBUG (
+ ", output_section->vma = 0x%08x",
+ ((unsigned int) reloc_data.sym_section->output_section->vma));
+ }
+
+ PR_DEBUG ( "\n");
+ }
+ else
+ {
+ PR_DEBUG ( " symbol section is NULL\n");
+ }
+
+ PR_DEBUG ( " Input_section:\n");
+ if (reloc_data.input_section != NULL)
+ {
+ PR_DEBUG (
+ " section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n",
+ reloc_data.input_section->name,
+ (unsigned int) reloc_data.input_section->output_offset,
+ (unsigned int) reloc_data.input_section->output_section->vma);
+ PR_DEBUG ( " changed_address = 0x%08x\n",
+ (unsigned int) (reloc_data.input_section->output_section->vma +
+ reloc_data.input_section->output_offset +
+ reloc_data.reloc_offset));
+ }
+ else
+ {
+ PR_DEBUG ( " input section is NULL\n");
+ }
+}
+
+static ATTRIBUTE_UNUSED bfd_vma
+get_middle_endian_relocation (bfd_vma reloc)
+{
+ bfd_vma ret = ((reloc & 0xffff0000) >> 16) |
+ ((reloc & 0xffff) << 16);
+ return ret;
+}
+
+#define S (reloc_data.sym_value \
+ + (reloc_data.sym_section->output_section != NULL ? \
+ (reloc_data.sym_section->output_offset \
+ + reloc_data.sym_section->output_section->vma) : 0) \
+ )
+#define L (reloc_data.sym_value \
+ + (reloc_data.sym_section->output_section != NULL ? \
+ (reloc_data.sym_section->output_offset \
+ + reloc_data.sym_section->output_section->vma) : 0) \
+ )
+#define A (reloc_data.reloc_addend)
+#define B (0)
+#define G (reloc_data.got_offset_value)
+#define GOT (reloc_data.got_symbol_vma)
+#define GOT_BEGIN (htab->sgot->output_section->vma)
+
+#define MES (0)
+ /* P: relative offset to PCL The offset should be to the
+ current location aligned to 32 bits. */
+#define P ( \
+ ( \
+ (reloc_data.input_section->output_section != NULL ? \
+ reloc_data.input_section->output_section->vma : 0) \
+ + reloc_data.input_section->output_offset \
+ + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0)) \
+ ) & ~0x3)
+#define PDATA ( \
+ (reloc_data.input_section->output_section->vma \
+ + reloc_data.input_section->output_offset \
+ + (reloc_data.reloc_offset) \
+ ))
+#define SECTSTAR (reloc_data.input_section->output_offset)
+#define SECTSTART (reloc_data.input_section->output_offset)
+#define _SDA_BASE_ (reloc_data.sdata_begin_symbol_vma)
+#define TLS_REL ((elf_hash_table (info))->tls_sec->output_section->vma)
+#define _SDA_BASE_ (reloc_data.sdata_begin_symbol_vma)
+#define TLS_TBSS (8)
+#define TCB_SIZE (8)
+
+#define NON_ME(VALUE) (reverse_me (reloc_data, VALUE))
+
+#define none (0)
+
+#define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA) \
+ {\
+ asection *sym_section = reloc_data.sym_section; \
+ asection *input_section = reloc_data.input_section; \
+ ARC_DEBUG ("FORMULA = " #FORMULA "\n"); \
+ ARC_DEBUG ("S = 0x%x\n", S); \
+ ARC_DEBUG ("A = 0x%x\n", A); \
+ ARC_DEBUG ("L = 0x%x\n", L); \
+ if (sym_section->output_section != NULL) \
+ { \
+ ARC_DEBUG ("symbol_section->vma = 0x%x\n", \
+ sym_section->output_section->vma + sym_section->output_offset); \
+ } \
+ else \
+ { \
+ ARC_DEBUG ("symbol_section->vma = NULL\n"); \
+ } \
+ if (input_section->output_section != NULL) \
+ { \
+ ARC_DEBUG ("symbol_section->vma = 0x%x\n", \
+ input_section->output_section->vma + input_section->output_offset); \
+ } \
+ else \
+ { \
+ ARC_DEBUG ("symbol_section->vma = NULL\n"); \
+ } \
+ ARC_DEBUG ("PCL = 0x%x\n", P); \
+ ARC_DEBUG ("P = 0x%x\n", P); \
+ ARC_DEBUG ("G = 0x%x\n", G); \
+ ARC_DEBUG ("SDA_OFFSET = 0x%x\n", _SDA_BASE_); \
+ ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \
+ ARC_DEBUG ("GOT_OFFSET = 0x%x\n", GOT); \
+ ARC_DEBUG ("relocation = 0x%08x\n", relocation); \
+ ARC_DEBUG ("before = 0x%08x\n", (unsigned int) insn); \
+ ARC_DEBUG ("data = 0x%08x (%u) (%d)\n", (unsigned int) relocation, (unsigned int) relocation, (int) relocation); \
+ }
+
+#define PRINT_DEBUG_RELOC_INFO_AFTER \
+ { \
+ ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \
+ }
+
+#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
+ case R_##TYPE: \
+ { \
+ bfd_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \
+ relocation = FORMULA ; \
+ PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA) \
+ insn = RELOC_FUNCTION (insn, relocation); \
+ PRINT_DEBUG_RELOC_INFO_AFTER \
+ } \
+ break;
+
+static bfd_vma
+reverse_me (struct arc_relocation_data reloc_data, bfd_vma reloc)
+{
+ if (reloc_data.input_section && reloc_data.input_section->flags & SEC_CODE)
+ return ((0x0000fffff & reloc) << 16) | ((0xffff0000 & reloc) >> 16);
+ else
+ return reloc;
+}
+
+static bfd_reloc_status_type
+arc_do_relocation (bfd_byte * contents,
+ struct arc_relocation_data reloc_data,
+ struct bfd_link_info *info)
+{
+ bfd_vma relocation = 0;
+ bfd_vma insn;
+ bfd_vma orig_insn ATTRIBUTE_UNUSED;
+ struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info);
+
+ if (reloc_data.should_relocate == FALSE)
+ return bfd_reloc_ok;
+
+ switch (reloc_data.howto->size)
+ {
+ case 2:
+ insn = arc_bfd_get_32 (reloc_data.input_section->owner,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ case 1:
+ case 0:
+ insn = arc_bfd_get_16 (reloc_data.input_section->owner,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ default:
+ insn = 0;
+ BFD_ASSERT (0);
+ break;
+ }
+
+ orig_insn = insn;
+
+ switch (reloc_data.howto->type)
+ {
+#include "elf/arc-reloc.def"
+
+ default:
+ BFD_ASSERT (0);
+ break;
+ }
+
+ /* Check for relocation overflow. */
+ if (reloc_data.howto->complain_on_overflow != complain_overflow_dont)
+ {
+ bfd_reloc_status_type flag;
+ flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow,
+ reloc_data.howto->bitsize,
+ reloc_data.howto->rightshift,
+ bfd_arch_bits_per_address (reloc_data.input_section->owner),
+ relocation);
+
+#undef DEBUG_ARC_RELOC
+#define DEBUG_ARC_RELOC(A) debug_arc_reloc (A)
+ if (flag != bfd_reloc_ok)
+ {
+ PR_DEBUG ( "Relocation overflows !!!!\n");
+
+ DEBUG_ARC_RELOC (reloc_data);
+
+ PR_DEBUG (
+ "Relocation value = signed -> %d, unsigned -> %u"
+ ", hex -> (0x%08x)\n",
+ (int) relocation,
+ (unsigned int) relocation,
+ (unsigned int) relocation);
+ return flag;
+ }
+ }
+#undef DEBUG_ARC_RELOC
+#define DEBUG_ARC_RELOC(A)
+
+ switch (reloc_data.howto->size)
+ {
+ case 2:
+ arc_bfd_put_32 (reloc_data.input_section->owner, insn,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ case 1:
+ case 0:
+ arc_bfd_put_16 (reloc_data.input_section->owner, insn,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ default:
+ ARC_DEBUG ("size = %d\n", reloc_data.howto->size);
+ BFD_ASSERT (0);
+ break;
+ }
+
+ return bfd_reloc_ok;
+}
+#undef S
+#undef A
+#undef B
+#undef G
+#undef GOT
+#undef L
+#undef MES
+#undef P
+#undef SECTSTAR
+#undef SECTSTART
+#undef _SDA_BASE_
+#undef none
+
+#undef ARC_RELOC_HOWTO
+
+static struct got_entry **
+arc_get_local_got_ents (bfd * abfd)
+{
+ static struct got_entry **local_got_ents = NULL;
+
+ if (local_got_ents == NULL)
+ {
+ size_t size;
+ Elf_Internal_Shdr *symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
+
+ size = symtab_hdr->sh_info * sizeof (bfd_vma);
+ local_got_ents = (struct got_entry **)
+ bfd_alloc (abfd, sizeof(struct got_entry *) * size);
+ if (local_got_ents == NULL)
+ return FALSE;
+
+ memset (local_got_ents, 0, sizeof(struct got_entry *) * size);
+ elf_local_got_ents (abfd) = local_got_ents;
+ }
+
+ return local_got_ents;
+}
+
+/* Relocate an arc ELF section.
+ Function : elf_arc_relocate_section
+ Brief : Relocate an arc section, by handling all the relocations
+ appearing in that section.
+ Args : output_bfd : The bfd being written to.
+ info : Link information.
+ input_bfd : The input bfd.
+ input_section : The section being relocated.
+ contents : contents of the section being relocated.
+ relocs : List of relocations in the section.
+ local_syms : is a pointer to the swapped in local symbols.
+ local_section : is an array giving the section in the input file
+ corresponding to the st_shndx field of each
+ local symbol. */
+static bfd_boolean
+elf_arc_relocate_section (bfd * output_bfd,
+ struct bfd_link_info * info,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
+ Elf_Internal_Rela * relocs,
+ Elf_Internal_Sym * local_syms,
+ asection ** local_sections)
+{
+ Elf_Internal_Shdr * symtab_hdr;
+ struct elf_link_hash_entry ** sym_hashes;
+ struct got_entry ** local_got_ents;
+ Elf_Internal_Rela * rel;
+ Elf_Internal_Rela * relend;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr);
+ sym_hashes = elf_sym_hashes (input_bfd);
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ enum elf_arc_reloc_type r_type;
+ reloc_howto_type * howto;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry * h;
+ Elf_Internal_Sym * sym;
+ asection * sec;
+ struct elf_link_hash_entry *h2;
+
+ struct arc_relocation_data reloc_data =
+ {
+ .reloc_offset = 0,
+ .reloc_addend = 0,
+ .got_offset_value = 0,
+ .sym_value = 0,
+ .sym_section = NULL,
+ .howto = NULL,
+ .input_section = NULL,
+ .sdata_begin_symbol_vma = 0,
+ .sdata_begin_symbol_vma_set = FALSE,
+ .got_symbol_vma = 0,
+ .should_relocate = FALSE
+ };
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ if (r_type >= (int) R_ARC_max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ howto = &elf_arc_howto_table[r_type];
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ /* If we are generating another .o file and the symbol in not
+ local, skip this relocation. */
+ if (bfd_link_relocatable (info))
+ {
+ /* This is a relocateable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+
+ /* Checks if this is a local symbol and thus the reloc
+ might (will??) be against a section symbol. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sec = local_sections[r_symndx];
+
+ /* for RELA relocs.Just adjust the addend
+ value in the relocation entry. */
+ rel->r_addend += sec->output_offset + sym->st_value;
+
+ BFD_DEBUG_PIC (
+ PR_DEBUG ("local symbols reloc "
+ "(section=%d %s) seen in %s\n",
+ r_symndx,
+ local_sections[r_symndx]->name,
+ __PRETTY_FUNCTION__)
+ );
+ }
+ }
+
+ continue;
+ }
+
+ h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__",
+ FALSE, FALSE, TRUE);
+
+ if (reloc_data.sdata_begin_symbol_vma_set == FALSE
+ && h2 != NULL && h2->root.type != bfd_link_hash_undefined
+ && h2->root.u.def.section->output_section != NULL)
+ /* TODO: Verify this condition. */
+ {
+ reloc_data.sdata_begin_symbol_vma =
+ (h2->root.u.def.value +
+ h2->root.u.def.section->output_section->vma);
+ reloc_data.sdata_begin_symbol_vma_set = TRUE;
+ }
+
+ reloc_data.input_section = input_section;
+ reloc_data.howto = howto;
+ reloc_data.reloc_offset = rel->r_offset;
+ reloc_data.reloc_addend = rel->r_addend;
+
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
+ {
+ local_got_ents = arc_get_local_got_ents (output_bfd);
+ struct got_entry *entry = local_got_ents[r_symndx];
+
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+
+ reloc_data.sym_value = sym->st_value;
+ reloc_data.sym_section = sec;
+
+ if ((is_reloc_for_GOT (howto)
+ || is_reloc_for_TLS (howto)) && entry != NULL)
+ {
+ if (is_reloc_for_TLS (howto))
+ while (entry->type == GOT_NORMAL && entry->next != NULL)
+ entry = entry->next;
+
+ if (is_reloc_for_GOT (howto))
+ while (entry->type != GOT_NORMAL && entry->next != NULL)
+ entry = entry->next;
+
+ if (entry->type == GOT_TLS_GD && entry->processed == FALSE)
+ {
+ bfd_vma sym_vma = sym->st_value
+ + sec->output_section->vma
+ + sec->output_offset;
+
+ /* Create dynamic relocation for local sym. */
+ ADD_RELA (output_bfd, got, entry->offset, 0,
+ R_ARC_TLS_DTPMOD, 0);
+ ADD_RELA (output_bfd, got, entry->offset+4, 0,
+ R_ARC_TLS_DTPOFF, 0);
+
+ bfd_vma sec_vma = sec->output_section->vma
+ + sec->output_offset;
+ bfd_put_32 (output_bfd, sym_vma - sec_vma,
+ htab->sgot->contents + entry->offset + 4);
+
+ ARC_DEBUG ("arc_info: FIXED -> GOT_TLS_GD value "
+ "= 0x%x @ 0x%x, for symbol %s\n",
+ sym_vma - sec_vma,
+ htab->sgot->contents + entry->offset + 4,
+ "(local)");
+
+ entry->processed = TRUE;
+ }
+ if (entry->type == GOT_TLS_IE && entry->processed == FALSE)
+ {
+ bfd_vma sym_vma = sym->st_value
+ + sec->output_section->vma
+ + sec->output_offset;
+ bfd_vma sec_vma = htab->tls_sec->output_section->vma;
+ bfd_put_32 (output_bfd, sym_vma - sec_vma,
+ htab->sgot->contents + entry->offset);
+ /* TODO: Check if this type of relocs is the cause
+ for all the ARC_NONE dynamic relocs. */
+
+ ARC_DEBUG ("arc_info: FIXED -> GOT_TLS_IE value = "
+ "0x%x @ 0x%x, for symbol %s\n",
+ sym_vma - sec_vma,
+ htab->sgot->contents + entry->offset,
+ "(local)");
+
+ entry->processed = TRUE;
+ }
+ if (entry->type == GOT_NORMAL && entry->processed == FALSE)
+ {
+ bfd_vma sec_vma = reloc_data.sym_section->output_section->vma
+ + reloc_data.sym_section->output_offset;
+
+ bfd_put_32 (output_bfd, reloc_data.sym_value + sec_vma,
+ htab->sgot->contents + entry->offset);
+
+ ARC_DEBUG ("arc_info: PATCHED: 0x%08x @ 0x%08x for "
+ "sym %s in got offset 0x%x\n",
+ reloc_data.sym_value + sec_vma,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + entry->offset,
+ "(local)",
+ entry->offset);
+ entry->processed = TRUE;
+ }
+
+ reloc_data.got_offset_value = entry->offset;
+ ARC_DEBUG ("arc_info: GOT_ENTRY = %d, offset = 0x%x, "
+ "vma = 0x%x for symbol %s\n",
+ entry->type, entry->offset,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + entry->offset,
+ "(local)");
+ }
+
+ BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
+ if (htab->sgot != NULL)
+ reloc_data.got_symbol_vma = htab->sgot->output_section->vma
+ + htab->sgot->output_offset;
+
+ reloc_data.should_relocate = TRUE;
+ }
+ else /* Global symbol. */
+ {
+ /* Get the symbol's entry in the symtab. */
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ BFD_ASSERT ((h->dynindx == -1) >= (h->forced_local != 0));
+ /* If we have encountered a definition for this symbol. */
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ reloc_data.sym_value = h->root.u.def.value;
+ reloc_data.sym_section = h->root.u.def.section;
+
+ reloc_data.should_relocate = TRUE;
+
+ if (is_reloc_for_GOT (howto) && !bfd_link_pic (info))
+ {
+ /* TODO: Change it to use arc_do_relocation with
+ ARC_32 reloc. Try to use ADD_RELA macro. */
+ bfd_vma relocation =
+ reloc_data.sym_value + reloc_data.reloc_addend
+ + (reloc_data.sym_section->output_section != NULL ?
+ (reloc_data.sym_section->output_offset
+ + reloc_data.sym_section->output_section->vma)
+ : 0);
+
+ BFD_ASSERT (h->got.glist);
+ bfd_vma got_offset = h->got.glist->offset;
+ bfd_put_32 (output_bfd, relocation,
+ htab->sgot->contents + got_offset);
+ }
+ if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1)
+ {
+ /* TODO: This is repeated up here. */
+ reloc_data.sym_value = h->plt.offset;
+ reloc_data.sym_section = htab->splt;
+ }
+ }
+ else if (h->root.type == bfd_link_hash_undefweak)
+ {
+ /* Is weak symbol and has no definition. */
+ if (is_reloc_for_GOT (howto))
+ {
+ reloc_data.sym_value = h->root.u.def.value;
+ reloc_data.sym_section = htab->sgot;
+ reloc_data.should_relocate = TRUE;
+ }
+ else if (is_reloc_for_PLT (howto)
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ /* TODO: This is repeated up here. */
+ reloc_data.sym_value = h->plt.offset;
+ reloc_data.sym_section = htab->splt;
+ reloc_data.should_relocate = TRUE;
+ }
+ else
+ continue;
+ }
+ else
+ {
+ if (is_reloc_for_GOT (howto))
+ {
+ reloc_data.sym_value = h->root.u.def.value;
+ reloc_data.sym_section = htab->sgot;
+
+ reloc_data.should_relocate = TRUE;
+ }
+ else if (is_reloc_for_PLT (howto))
+ {
+ /* Fail if it is linking for PIE and the symbol is
+ undefined. */
+ if (bfd_link_executable (info)
+ && !(*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_offset, TRUE))
+ {
+ return FALSE;
+ }
+ reloc_data.sym_value = h->plt.offset;
+ reloc_data.sym_section = htab->splt;
+
+ reloc_data.should_relocate = TRUE;
+ }
+ else if (!bfd_link_pic (info)
+ && !(*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_offset, TRUE))
+ {
+ return FALSE;
+ }
+ }
+
+ if (h->got.glist != NULL)
+ {
+ struct got_entry *entry = h->got.glist;
+
+ if (is_reloc_for_GOT (howto) || is_reloc_for_TLS (howto))
+ {
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || (bfd_link_pic (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h)))
+ {
+ reloc_data.sym_value = h->root.u.def.value;
+ reloc_data.sym_section = h->root.u.def.section;
+
+ if (is_reloc_for_TLS (howto))
+ while (entry->type == GOT_NORMAL && entry->next != NULL)
+ entry = entry->next;
+
+ if (entry->processed == FALSE
+ && (entry->type == GOT_TLS_GD
+ || entry->type == GOT_TLS_IE))
+ {
+ bfd_vma sym_value = h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset;
+
+ bfd_vma sec_vma =
+ elf_hash_table (info)->tls_sec->output_section->vma;
+
+ bfd_put_32 (output_bfd,
+ sym_value - sec_vma,
+ htab->sgot->contents + entry->offset
+ + (entry->existing_entries == MOD_AND_OFF ? 4 : 0));
+
+ ARC_DEBUG ("arc_info: FIXED -> %s value = 0x%x "
+ "@ 0x%x, for symbol %s\n",
+ (entry->type == GOT_TLS_GD ? "GOT_TLS_GD" :
+ "GOT_TLS_IE"),
+ sym_value - sec_vma,
+ htab->sgot->contents + entry->offset
+ + (entry->existing_entries == MOD_AND_OFF ? 4 : 0),
+ h->root.root.string);
+
+ entry->processed = TRUE;
+ }
+
+ if (entry->type == GOT_TLS_IE && entry->processed == FALSE)
+ {
+ bfd_vma sec_vma = htab->tls_sec->output_section->vma;
+ bfd_put_32 (output_bfd,
+ reloc_data.sym_value - sec_vma,
+ htab->sgot->contents + entry->offset);
+ }
+
+ if (entry->type == GOT_NORMAL && entry->processed == FALSE)
+ {
+ bfd_vma sec_vma =
+ reloc_data.sym_section->output_section->vma
+ + reloc_data.sym_section->output_offset;
+
+ if (h->root.type != bfd_link_hash_undefweak)
+ {
+ bfd_put_32 (output_bfd,
+ reloc_data.sym_value + sec_vma,
+ htab->sgot->contents + entry->offset);
+
+ ARC_DEBUG ("arc_info: PATCHED: 0x%08x "
+ "@ 0x%08x for sym %s in got offset 0x%x\n",
+ reloc_data.sym_value + sec_vma,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + entry->offset,
+ h->root.root.string,
+ entry->offset);
+ }
+ else
+ {
+ ARC_DEBUG ("arc_info: PATCHED: NOT_PATCHED "
+ "@ 0x%08x for sym %s in got offset 0x%x "
+ "(is undefweak)\n",
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + entry->offset,
+ h->root.root.string,
+ entry->offset);
+ }
+
+ entry->processed = TRUE;
+ }
+ }
+ }
+
+ reloc_data.got_offset_value = entry->offset;
+
+ ARC_DEBUG ("arc_info: GOT_ENTRY = %d, offset = 0x%x, "
+ "vma = 0x%x for symbol %s\n",
+ entry->type, entry->offset,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + entry->offset,
+ h->root.root.string);
+ }
+
+ BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
+ if (htab->sgot != NULL)
+ reloc_data.got_symbol_vma = htab->sgot->output_section->vma
+ + htab->sgot->output_offset;
+ }
+
+ switch (r_type)
+ {
+ case R_ARC_32:
+ case R_ARC_32_ME:
+ case R_ARC_PC32:
+ case R_ARC_32_PCREL:
+ if (bfd_link_pic (info) && !bfd_link_pie (info)
+ && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
+ || (h != NULL
+ && h->dynindx != -1
+ && (!info->symbolic || !h->def_regular))))
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ bfd_boolean skip = FALSE;
+ bfd_boolean relocate = FALSE;
+ asection *sreloc = _bfd_elf_get_dynamic_reloc_section
+ (input_bfd, input_section,
+ /*RELA*/ TRUE);
+
+ BFD_ASSERT (sreloc != NULL);
+
+ outrel.r_offset = _bfd_elf_section_offset (output_bfd,
+ info,
+ input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1)
+ skip = TRUE;
+
+ outrel.r_addend = rel->r_addend;
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ {
+ memset (&outrel, 0, sizeof outrel);
+ relocate = FALSE;
+ }
+ else if (r_type == R_ARC_PC32
+ || r_type == R_ARC_32_PCREL)
+ {
+ BFD_ASSERT (h != NULL && h->dynindx != -1);
+ if ((input_section->flags & SEC_ALLOC) != 0)
+ relocate = FALSE;
+ else
+ relocate = TRUE;
+ outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
+ }
+ else
+ {
+ /* Handle local symbols, they either do not have a
+ global hash table entry (h == NULL), or are
+ forced local due to a version script
+ (h->forced_local), or the third condition is
+ legacy, it appears to say something like, for
+ links where we are pre-binding the symbols, or
+ there's not an entry for this symbol in the
+ dynamic symbol table, and it's a regular symbol
+ not defined in a shared object, then treat the
+ symbol as local, resolve it now. */
+ if (h == NULL
+ || ((info->symbolic || h->dynindx == -1)
+ && h->def_regular)
+ || h->forced_local)
+ {
+ relocate = TRUE;
+ /* outrel.r_addend = 0; */
+ outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE);
+ }
+ else
+ {
+ BFD_ASSERT (h->dynindx != -1);
+
+ /* This type of dynamic relocation cannot be created
+ for code sections. */
+ BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
+
+ if ((input_section->flags & SEC_ALLOC) != 0)
+ relocate = FALSE;
+ else
+ relocate = TRUE;
+ outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_32);
+ }
+ }
+
+ BFD_ASSERT (sreloc->contents != 0);
+
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
+ sreloc->reloc_count += 1;
+
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+
+ if (relocate == FALSE)
+ continue;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (is_reloc_SDA_relative (howto)
+ && (reloc_data.sdata_begin_symbol_vma_set == FALSE))
+ {
+ (*_bfd_error_handler)
+ ("Error: Linker symbol __SDATA_BEGIN__ not found");
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ DEBUG_ARC_RELOC (reloc_data);
+
+ if (arc_do_relocation (contents, reloc_data, info) != bfd_reloc_ok)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static struct dynamic_sections
+arc_create_dynamic_sections (bfd * abfd, struct bfd_link_info *info)
+{
+ struct elf_link_hash_table *htab;
+ bfd *dynobj;
+ struct dynamic_sections ds =
+ {
+ .initialized = FALSE,
+ .sgot = NULL,
+ .srelgot = NULL,
+ .sgotplt = NULL,
+ .srelgotplt = NULL,
+ .sdyn = NULL,
+ .splt = NULL,
+ .srelplt = NULL
+ };
+
+ htab = elf_hash_table (info);
+ BFD_ASSERT (htab);
+
+ /* Create dynamic sections for relocatable executables so that we
+ can copy relocations. */
+ if (! htab->dynamic_sections_created && bfd_link_pic (info))
+ {
+ if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
+ BFD_ASSERT (0);
+ }
+
+ dynobj = (elf_hash_table (info))->dynobj;
+
+ if (dynobj)
+ {
+ ds.sgot = htab->sgot;
+ ds.srelgot = htab->srelgot;
+
+ ds.sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ ds.srelgotplt = ds.srelplt;
+
+ ds.splt = bfd_get_section_by_name (dynobj, ".plt");
+ ds.srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
+ }
+
+ if (htab->dynamic_sections_created)
+ {
+ ds.sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ }
+
+ ds.initialized = TRUE;
+
+ return ds;
+}
+
+#define ADD_SYMBOL_REF_SEC_AND_RELOC(SECNAME, COND_FOR_RELOC, H) \
+ htab->s##SECNAME->size; \
+ { \
+ if (COND_FOR_RELOC) \
+ { \
+ htab->srel##SECNAME->size += sizeof (Elf32_External_Rela); \
+ ARC_DEBUG ("arc_info: Added reloc space in " \
+ #SECNAME " section at " __FILE__ \
+ ":%d for symbol\n", \
+ __LINE__, name_for_global_symbol (H)); \
+ } \
+ if (H) \
+ if (h->dynindx == -1 && !h->forced_local) \
+ if (! bfd_elf_link_record_dynamic_symbol (info, H)) \
+ return FALSE; \
+ htab->s##SECNAME->size += 4; \
+ }
+
+static bfd_boolean
+elf_arc_check_relocs (bfd * abfd,
+ struct bfd_link_info * info,
+ asection * sec,
+ const Elf_Internal_Rela * relocs)
+{
+ Elf_Internal_Shdr * symtab_hdr;
+ struct elf_link_hash_entry ** sym_hashes;
+ struct got_entry ** local_got_ents;
+ const Elf_Internal_Rela * rel;
+ const Elf_Internal_Rela * rel_end;
+ bfd * dynobj;
+ asection * sreloc = NULL;
+ struct elf_link_hash_table * htab = elf_hash_table (info);
+
+ if (bfd_link_relocatable (info))
+ return TRUE;
+
+ dynobj = (elf_hash_table (info))->dynobj;
+ symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_ents = arc_get_local_got_ents (abfd);
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ enum elf_arc_reloc_type r_type;
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ if (r_type >= (int) R_ARC_max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ howto = &elf_arc_howto_table[r_type];
+
+ if (dynobj == NULL
+ && (is_reloc_for_GOT (howto) == TRUE
+ || is_reloc_for_TLS (howto) == TRUE))
+ {
+ dynobj = elf_hash_table (info)->dynobj = abfd;
+ if (! _bfd_elf_create_got_section (abfd, info))
+ return FALSE;
+ }
+
+ /* Load symbol information. */
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */
+ h = NULL;
+ else /* Global one. */
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ switch (r_type)
+ {
+ case R_ARC_32:
+ case R_ARC_32_ME:
+ /* During shared library creation, these relocs should not
+ appear in a shared library (as memory will be read only
+ and the dynamic linker can not resolve these. However
+ the error should not occur for e.g. debugging or
+ non-readonly sections. */
+ if (bfd_link_dll (info) && !bfd_link_pie (info)
+ && (sec->flags & SEC_ALLOC) != 0
+ && (sec->flags & SEC_READONLY) != 0)
+ {
+ const char *name;
+ if (h)
+ name = h->root.root.string;
+ else
+ /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */
+ name = "UNKNOWN";
+ (*_bfd_error_handler)
+ (_("\
+%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
+ abfd,
+ arc_elf_howto (r_type)->name,
+ name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ /* In some cases we are not setting the 'non_got_ref'
+ flag, even though the relocations don't require a GOT
+ access. We should extend the testing in this area to
+ ensure that no significant cases are being missed. */
+ if (h)
+ h->non_got_ref = 1;
+ /* FALLTHROUGH */
+ case R_ARC_PC32:
+ case R_ARC_32_PCREL:
+ if (bfd_link_pic (info) && !bfd_link_pie (info)
+ && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
+ || (h != NULL
+ && h->dynindx != -1
+ && (!info->symbolic || !h->def_regular))))
+ {
+ if (sreloc == NULL)
+ {
+ sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
+ 2, abfd,
+ /*rela*/
+ TRUE);
+
+ if (sreloc == NULL)
+ return FALSE;
+ }
+ sreloc->size += sizeof (Elf32_External_Rela);
+
+ }
+ default:
+ break;
+ }
+
+ if (is_reloc_for_PLT (howto) == TRUE)
+ {
+ if (h == NULL)
+ continue;
+ else
+ h->needs_plt = 1;
+ }
+
+ if (is_reloc_for_GOT (howto) == TRUE)
+ {
+ if (h == NULL)
+ {
+ /* Local symbol. */
+ if (local_got_ents[r_symndx] == NULL)
+ {
+ bfd_vma offset =
+ ADD_SYMBOL_REF_SEC_AND_RELOC (got,
+ bfd_link_pic (info),
+ NULL);
+ new_got_entry_to_list (&(local_got_ents[r_symndx]),
+ GOT_NORMAL, offset, NONE);
+ }
+ }
+ else
+ {
+ /* Global symbol. */
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->got.glist == NULL)
+ {
+ bfd_vma offset =
+ ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
+ new_got_entry_to_list (&h->got.glist,
+ GOT_NORMAL, offset, NONE);
+ }
+ }
+ }
+
+ if (is_reloc_for_TLS (howto) == TRUE)
+ {
+ enum tls_type_e type = GOT_UNKNOWN;
+
+ switch (r_type)
+ {
+ case R_ARC_TLS_GD_GOT:
+ type = GOT_TLS_GD;
+ break;
+ case R_ARC_TLS_IE_GOT:
+ type = GOT_TLS_IE;
+ break;
+ default:
+ break;
+ }
+
+ struct got_entry **list = NULL;
+ if (h != NULL)
+ list = &(h->got.glist);
+ else
+ list = &(local_got_ents[r_symndx]);
+
+ if (type != GOT_UNKNOWN && !symbol_has_entry_of_type (*list, type))
+ {
+ enum tls_got_entries entries = NONE;
+ bfd_vma offset =
+ ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
+
+ if (type == GOT_TLS_GD)
+ {
+ bfd_vma ATTRIBUTE_UNUSED notneeded =
+ ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
+ entries = MOD_AND_OFF;
+ }
+
+ if (entries == NONE)
+ entries = OFF;
+
+ new_got_entry_to_list (list, type, offset, entries);
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+#define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so"
+
+static struct plt_version_t *
+arc_get_plt_version (struct bfd_link_info *info)
+{
+ int i;
+
+ for (i = 0; i < 1; i++)
+ {
+ ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i,
+ plt_versions[i].entry_size,
+ plt_versions[i].elem_size);
+ }
+
+ if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2)
+ {
+ if (bfd_link_pic (info))
+ return &(plt_versions[ELF_ARCV2_PIC]);
+ else
+ return &(plt_versions[ELF_ARCV2_ABS]);
+ }
+ else
+ {
+ if (bfd_link_pic (info))
+ return &(plt_versions[ELF_ARC_PIC]);
+ else
+ return &(plt_versions[ELF_ARC_ABS]);
+ }
+}
+
+static bfd_vma
+add_symbol_to_plt (struct bfd_link_info *info)
+{
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+ bfd_vma ret;
+
+ struct plt_version_t *plt_data = arc_get_plt_version (info);
+
+ /* If this is the first .plt entry, make room for the special first
+ entry. */
+ if (htab->splt->size == 0)
+ htab->splt->size += plt_data->entry_size;
+
+ ret = htab->splt->size;
+
+ htab->splt->size += plt_data->elem_size;
+ ARC_DEBUG ("PLT_SIZE = %d\n", htab->splt->size);
+
+ htab->sgotplt->size += 4;
+ htab->srelplt->size += sizeof (Elf32_External_Rela);
+
+ return ret;
+}
+
+#define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \
+ plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0)
+
+static void
+plt_do_relocs_for_symbol (bfd *abfd,
+ struct elf_link_hash_table *htab,
+ const struct plt_reloc *reloc,
+ bfd_vma plt_offset,
+ bfd_vma symbol_got_offset)
+{
+ while (SYM_ONLY (reloc->symbol) != LAST_RELOC)
+ {
+ bfd_vma relocation = 0;
+
+ switch (SYM_ONLY (reloc->symbol))
+ {
+ case SGOT:
+ relocation =
+ htab->sgotplt->output_section->vma +
+ htab->sgotplt->output_offset + symbol_got_offset;
+ break;
+ }
+ relocation += reloc->addend;
+
+ if (IS_RELATIVE (reloc->symbol))
+ {
+ bfd_vma reloc_offset = reloc->offset;
+ reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0;
+ reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0;
+
+ relocation -= htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + plt_offset + reloc_offset;
+ }
+
+ /* TODO: being ME is not a property of the relocation but of the
+ section of which is applying the relocation. */
+ if (IS_MIDDLE_ENDIAN (reloc->symbol) || bfd_big_endian (abfd))
+ {
+ relocation =
+ ((relocation & 0xffff0000) >> 16) |
+ ((relocation & 0xffff) << 16);
+ }
+
+ switch (reloc->size)
+ {
+ case 32:
+ bfd_put_32 (htab->splt->output_section->owner,
+ relocation,
+ htab->splt->contents + plt_offset + reloc->offset);
+ break;
+ }
+
+ reloc = &(reloc[1]); /* Jump to next relocation. */
+ }
+}
+
+static void
+relocate_plt_for_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ struct plt_version_t *plt_data = arc_get_plt_version (info);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ bfd_vma plt_index = (h->plt.offset - plt_data->entry_size)
+ / plt_data->elem_size;
+ bfd_vma got_offset = (plt_index + 3) * 4;
+
+ ARC_DEBUG ("arc_info: PLT_OFFSET = 0x%x, PLT_ENTRY_VMA = 0x%x, \
+GOT_ENTRY_OFFSET = 0x%x, GOT_ENTRY_VMA = 0x%x, for symbol %s\n",
+ h->plt.offset,
+ htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset,
+ got_offset,
+ htab->sgotplt->output_section->vma
+ + htab->sgotplt->output_offset
+ + got_offset,
+ h->root.root.string);
+
+ memcpy (htab->splt->contents + h->plt.offset,
+ plt_data->elem,
+ plt_data->elem_size);
+ plt_do_relocs_for_symbol (output_bfd, htab,
+ plt_data->elem_relocs,
+ h->plt.offset,
+ got_offset);
+
+ /* Fill in the entry in the global offset table. */
+ bfd_put_32 (output_bfd,
+ (bfd_vma) (htab->splt->output_section->vma
+ + htab->splt->output_offset),
+ htab->sgotplt->contents + got_offset);
+
+ /* TODO: Fill in the entry in the .rela.plt section. */
+ {
+ Elf_Internal_Rela rel;
+ bfd_byte *loc;
+
+ rel.r_offset = (htab->sgotplt->output_section->vma
+ + htab->sgotplt->output_offset
+ + got_offset);
+ rel.r_addend = 0;
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT);
+
+ loc = htab->srelplt->contents;
+ loc += plt_index * sizeof (Elf32_External_Rela); /* relA */
+ bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
+ }
+}
+
+static void
+relocate_plt_for_entry (bfd *abfd,
+ struct bfd_link_info *info)
+{
+ struct plt_version_t *plt_data = arc_get_plt_version (info);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ memcpy (htab->splt->contents, plt_data->entry,
+ plt_data->entry_size);
+ PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs);
+}
+
+/* Desc : 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
+elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ asection *s;
+ unsigned int power_of_two;
+ bfd *dynobj = (elf_hash_table (info))->dynobj;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ if (h->type == STT_FUNC
+ || h->type == STT_GNU_IFUNC
+ || h->needs_plt == 1)
+ {
+ if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic)
+ {
+ /* This case can occur if we saw a PLT32 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 PC32
+ reloc instead. */
+ BFD_ASSERT (h->needs_plt);
+ return TRUE;
+ }
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1 && !h->forced_local
+ && !bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+
+ if (bfd_link_pic (info)
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
+ {
+ bfd_vma loc = add_symbol_to_plt (info);
+
+ if (!bfd_link_pic (info) && !h->def_regular)
+ {
+ h->root.u.def.section = htab->splt;
+ h->root.u.def.value = loc;
+ }
+ h->plt.offset = loc;
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+ 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->u.weakdef != NULL)
+ {
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ return TRUE;
+ }
+
+ /* If there are no non-GOT references, we do not need a copy
+ relocation. */
+ if (!h->non_got_ref)
+ 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 (bfd_link_pic (info))
+ 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_ARC_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->size += sizeof (Elf32_External_Rela);
+ h->needs_copy = 1;
+ }
+
+ /* 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->size = BFD_ALIGN (s->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->size;
+
+ /* Increment the section size to make room for the symbol. */
+ s->size += h->size;
+
+ return TRUE;
+}
+
+/* Function : elf_arc_finish_dynamic_symbol
+ Brief : Finish up dynamic symbol handling. We set the
+ contents of various dynamic sections here.
+ Args : output_bfd :
+ info :
+ h :
+ sym :
+ Returns : True/False as the return status. */
+
+static bfd_boolean
+elf_arc_finish_dynamic_symbol (bfd * output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym * sym)
+{
+ if (h->plt.offset != (bfd_vma) -1)
+ {
+ relocate_plt_for_symbol (output_bfd, info, h);
+
+ if (!h->def_regular)
+ {
+ /* 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.glist != NULL)
+ {
+ struct got_entry *list = h->got.glist;
+
+ /* Traverse the list of got entries for this symbol. */
+ while (list)
+ {
+ bfd_vma got_offset = h->got.glist->offset;
+
+ if (list->type == GOT_NORMAL
+ && list->created_dyn_relocation == FALSE)
+ {
+ if (bfd_link_pic (info)
+ && (info->symbolic || h->dynindx == -1)
+ && h->def_regular)
+ {
+ ADD_RELA (output_bfd, got, got_offset, 0, R_ARC_RELATIVE, 0);
+ }
+ else
+ {
+ ADD_RELA (output_bfd, got, got_offset, h->dynindx,
+ R_ARC_GLOB_DAT, 0);
+ }
+ list->created_dyn_relocation = TRUE;
+ }
+ else if (list->existing_entries != NONE)
+ {
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+ enum tls_got_entries e = list->existing_entries;
+
+ BFD_ASSERT (list->type != GOT_TLS_GD
+ || list->existing_entries == MOD_AND_OFF);
+
+ bfd_vma dynindx = h->dynindx == -1 ? 0 : h->dynindx;
+ if (e == MOD_AND_OFF || e == MOD)
+ {
+ ADD_RELA (output_bfd, got, got_offset, dynindx,
+ R_ARC_TLS_DTPMOD, 0);
+ ARC_DEBUG ("arc_info: TLS_DYNRELOC: type = %d, \
+GOT_OFFSET = 0x%x, GOT_VMA = 0x%x, INDEX = %d, ADDEND = 0x%x\n",
+ list->type,
+ got_offset,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + got_offset,
+ dynindx, 0);
+ }
+ if (e == MOD_AND_OFF || e == OFF)
+ {
+ bfd_vma addend = 0;
+ if (list->type == GOT_TLS_IE)
+ addend = bfd_get_32 (output_bfd,
+ htab->sgot->contents + got_offset);
+
+ ADD_RELA (output_bfd, got,
+ got_offset + (e == MOD_AND_OFF ? 4 : 0),
+ dynindx,
+ (list->type == GOT_TLS_IE ?
+ R_ARC_TLS_TPOFF : R_ARC_TLS_DTPOFF),
+ addend);
+
+ ARC_DEBUG ("arc_info: TLS_DYNRELOC: type = %d, \
+GOT_OFFSET = 0x%x, GOT_VMA = 0x%x, INDEX = %d, ADDEND = 0x%x\n",
+ list->type,
+ got_offset,
+ htab->sgot->output_section->vma
+ + htab->sgot->output_offset + got_offset,
+ dynindx, addend);
+ }
+ }
+
+ list = list->next;
+ }
+
+ h->got.glist = NULL;
+ }
+
+ if (h->needs_copy)
+ {
+ bfd_vma rel_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+
+ asection *srelbss =
+ bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rela.bss");
+
+ bfd_byte * loc = srelbss->contents
+ + (srelbss->reloc_count * sizeof (Elf32_External_Rela));
+ srelbss->reloc_count++;
+
+ Elf_Internal_Rela rel;
+ rel.r_addend = 0;
+ rel.r_offset = rel_offset;
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY);
+
+ bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "__DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+
+ return TRUE;
+}
+
+#define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION, ASSERT) \
+ case TAG: \
+ if (SYMBOL != NULL) \
+ { \
+ h = elf_link_hash_lookup (elf_hash_table (info), \
+ SYMBOL, FALSE, FALSE, TRUE); \
+ } \
+ else if (SECTION != NULL) \
+ { \
+ s = bfd_get_section_by_name (output_bfd, SECTION); \
+ BFD_ASSERT (s != NULL || !ASSERT); \
+ do_it = TRUE; \
+ } \
+ break;
+
+/* Function : elf_arc_finish_dynamic_sections
+ Brief : Finish up the dynamic sections handling.
+ Args : output_bfd :
+ info :
+ h :
+ sym :
+ Returns : True/False as the return status. */
+
+static bfd_boolean
+elf_arc_finish_dynamic_sections (bfd * output_bfd,
+ struct bfd_link_info *info)
+{
+ struct dynamic_sections ds = arc_create_dynamic_sections (output_bfd, info);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+ bfd *dynobj = (elf_hash_table (info))->dynobj;
+
+ if (ds.sdyn)
+ {
+ Elf32_External_Dyn *dyncon, *dynconend;
+
+ dyncon = (Elf32_External_Dyn *) ds.sdyn->contents;
+ dynconend =
+ (Elf32_External_Dyn *) (ds.sdyn->contents + ds.sdyn->size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn internal_dyn;
+ bfd_boolean do_it = FALSE;
+
+ struct elf_link_hash_entry *h = NULL;
+ asection *s = NULL;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn);
+
+ switch (internal_dyn.d_tag)
+ {
+ GET_SYMBOL_OR_SECTION (DT_INIT, "_init", NULL, TRUE)
+ GET_SYMBOL_OR_SECTION (DT_FINI, "_fini", NULL, TRUE)
+ GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_RELASZ, NULL, ".rela.plt", FALSE)
+ GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r", TRUE)
+ default:
+ break;
+ }
+
+ /* In case the dynamic symbols should be updated with a symbol. */
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ asection *asec_ptr;
+
+ internal_dyn.d_un.d_val = h->root.u.def.value;
+ asec_ptr = h->root.u.def.section;
+ if (asec_ptr->output_section != NULL)
+ {
+ internal_dyn.d_un.d_val +=
+ (asec_ptr->output_section->vma +
+ asec_ptr->output_offset);
+ }
+ else
+ {
+ /* The symbol is imported from another shared
+ library and does not apply to this one. */
+ internal_dyn.d_un.d_val = 0;
+ }
+ do_it = TRUE;
+ }
+ else if (s != NULL) /* With a section information. */
+ {
+ switch (internal_dyn.d_tag)
+ {
+ case DT_PLTGOT:
+ case DT_JMPREL:
+ case DT_VERSYM:
+ case DT_VERDEF:
+ case DT_VERNEED:
+ internal_dyn.d_un.d_ptr = s->vma;
+ do_it = TRUE;
+ break;
+
+ case DT_PLTRELSZ:
+ internal_dyn.d_un.d_val = s->size;
+ do_it = TRUE;
+ break;
+
+ case DT_RELASZ:
+ if (s != NULL)
+ internal_dyn.d_un.d_val -= s->size;
+ do_it = TRUE;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ if (do_it == TRUE)
+ bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon);
+ }
+
+ if (htab->splt->size > 0)
+ {
+ relocate_plt_for_entry (output_bfd, info);
+ }
+
+ /* TODO: Validate this. */
+ elf_section_data (htab->srelplt->output_section)->this_hdr.sh_entsize
+ = 0xc;
+ }
+
+ /* Fill in the first three entries in the global offset table. */
+ if (htab->sgot)
+ {
+ if (htab->sgot->size > 0 || htab->sgotplt->size > 0)
+ {
+ if (ds.sdyn == NULL)
+ bfd_put_32 (output_bfd, (bfd_vma) 0,
+ htab->sgotplt->contents);
+ else
+ bfd_put_32 (output_bfd,
+ ds.sdyn->output_section->vma + ds.sdyn->output_offset,
+ htab->sgotplt->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
+ }
+ }
+
+ return TRUE;
+}
+
+#define ADD_DYNAMIC_SYMBOL(NAME, TAG) \
+ h = elf_link_hash_lookup (elf_hash_table (info), \
+ NAME, FALSE, FALSE, FALSE); \
+ if ((h != NULL && (h->ref_regular || h->def_regular))) \
+ if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \
+ return FALSE;
+
+/* Set the sizes of the dynamic sections. */
+static bfd_boolean
+elf_arc_size_dynamic_sections (bfd * output_bfd,
+ struct bfd_link_info *info)
+{
+ bfd * dynobj;
+ asection * s;
+ bfd_boolean relocs_exist = FALSE;
+ bfd_boolean reltext_exist = FALSE;
+ struct dynamic_sections ds = arc_create_dynamic_sections (output_bfd, info);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ dynobj = (elf_hash_table (info))->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if ((elf_hash_table (info))->dynamic_sections_created)
+ {
+ struct elf_link_hash_entry *h;
+
+ /* Set the contents of the .interp section to the
+ interpreter. */
+ if (!bfd_link_pic (info))
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->size = sizeof (ELF_DYNAMIC_INTERPRETER);
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+
+ /* Add some entries to the .dynamic section. We fill in some of
+ the values later, in elf_bfd_final_link, but we must add the
+ entries now so that we know the final size of the .dynamic
+ section. Checking if the .init section is present. We also
+ create DT_INIT and DT_FINI entries if the init_str has been
+ changed by the user. */
+ ADD_DYNAMIC_SYMBOL ("init", DT_INIT);
+ ADD_DYNAMIC_SYMBOL ("fini", DT_FINI);
+ }
+ 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. */
+ if (htab->srelgot != NULL)
+ htab->srelgot->size = 0;
+ }
+
+ if (htab->splt != NULL && htab->splt->size == 0)
+ htab->splt->flags |= SEC_EXCLUDE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ if (strncmp (s->name, ".rela", 5) == 0)
+ {
+ if (s->size == 0)
+ {
+ s->flags |= SEC_EXCLUDE;
+ }
+ else
+ {
+ if (strcmp (s->name, ".rela.plt") != 0)
+ {
+ const char *outname =
+ bfd_get_section_name (output_bfd,
+ htab->srelplt->output_section);
+
+ asection *target = bfd_get_section_by_name (output_bfd,
+ outname + 4);
+
+ relocs_exist = TRUE;
+ if (target != NULL && target->size != 0
+ && (target->flags & SEC_READONLY) != 0
+ && (target->flags & SEC_ALLOC) != 0)
+ reltext_exist = TRUE;
+ }
+ }
+
+ /* We use the reloc_count field as a counter if we need to
+ copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+
+ if (strcmp (s->name, ".dynamic") == 0)
+ continue;
+
+ if (s->size != 0)
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+
+ if (s->contents == NULL && s->size != 0)
+ return FALSE;
+ }
+
+ if (ds.sdyn)
+ {
+ /* TODO: Check if this is needed. */
+ if (!bfd_link_pic (info))
+ if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
+ return FALSE;
+
+ if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0)
+ if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
+ || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
+ || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)
+ )
+ return FALSE;
+
+ if (relocs_exist == TRUE)
+ if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
+ || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
+ || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
+ sizeof (Elf32_External_Rela))
+ )
+ return FALSE;
+
+ if (reltext_exist == TRUE)
+ if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+const struct elf_size_info arc_elf32_size_info =
+{
+ sizeof (Elf32_External_Ehdr),
+ sizeof (Elf32_External_Phdr),
+ sizeof (Elf32_External_Shdr),
+ sizeof (Elf32_External_Rel),
+ sizeof (Elf32_External_Rela),
+ sizeof (Elf32_External_Sym),
+ sizeof (Elf32_External_Dyn),
+ sizeof (Elf_External_Note),
+ 4,
+ 1,
+ 32, 2,
+ ELFCLASS32, EV_CURRENT,
+ bfd_elf32_write_out_phdrs,
+ bfd_elf32_write_shdrs_and_ehdr,
+ bfd_elf32_checksum_contents,
+ bfd_elf32_write_relocs,
+ bfd_elf32_swap_symbol_in,
+ bfd_elf32_swap_symbol_out,
+ bfd_elf32_slurp_reloc_table,
+ bfd_elf32_slurp_symbol_table,
+ bfd_elf32_swap_dyn_in,
+ bfd_elf32_swap_dyn_out,
+ bfd_elf32_swap_reloc_in,
+ bfd_elf32_swap_reloc_out,
+ bfd_elf32_swap_reloca_in,
+ bfd_elf32_swap_reloca_out
+};
+
+#define elf_backend_size_info arc_elf32_size_info
+
+static struct bfd_link_hash_table *
+arc_elf_link_hash_table_create (bfd *abfd)
+{
+ struct elf_link_hash_table *htab;
+
+ htab = bfd_zmalloc (sizeof (*htab));
+ if (htab == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (htab, abfd,
+ _bfd_elf_link_hash_newfunc,
+ sizeof (struct elf_link_hash_entry),
+ GENERIC_ELF_DATA))
+ {
+ free (htab);
+ return NULL;
+ }
+
+ htab->init_got_refcount.refcount = 0;
+ htab->init_got_refcount.glist = NULL;
+ htab->init_got_offset.offset = 0;
+ htab->init_got_offset.glist = NULL;
+ return (struct bfd_link_hash_table *) htab;
+}
+
+/* Hook called by the linker routine which adds symbols from an object
+ file. */
+
+static bfd_boolean
+elf_arc_add_symbol_hook (bfd * abfd,
+ struct bfd_link_info * info,
+ Elf_Internal_Sym * sym,
+ const char ** namep ATTRIBUTE_UNUSED,
+ flagword * flagsp ATTRIBUTE_UNUSED,
+ asection ** secp ATTRIBUTE_UNUSED,
+ bfd_vma * valp ATTRIBUTE_UNUSED)
+{
+ if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
+ && (abfd->flags & DYNAMIC) == 0
+ && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
+ elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
+
+ return TRUE;
+}
+
+#define TARGET_LITTLE_SYM arc_elf32_le_vec
+#define TARGET_LITTLE_NAME "elf32-littlearc"
+#define TARGET_BIG_SYM arc_elf32_be_vec
+#define TARGET_BIG_NAME "elf32-bigarc"
+#define ELF_ARCH bfd_arch_arc
+#define ELF_MACHINE_CODE EM_ARC_COMPACT
+#define ELF_MACHINE_ALT1 EM_ARC_COMPACT2
+#define ELF_MAXPAGESIZE 0x2000
+
+#define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create
+
+#define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup
+#define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags
+#define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data
+#define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data
+
+#define elf_info_to_howto_rel arc_info_to_howto_rel
+#define elf_backend_object_p arc_elf_object_p
+#define elf_backend_final_write_processing arc_elf_final_write_processing
+
+#define elf_backend_relocate_section elf_arc_relocate_section
+#define elf_backend_check_relocs elf_arc_check_relocs
+#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
+
+#define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol
+#define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol
+
+#define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections
+#define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections
+#define elf_backend_add_symbol_hook elf_arc_add_symbol_hook
+
+#define elf_backend_can_gc_sections 1
+#define elf_backend_want_got_plt 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_rela_plts_and_copies_p 1
+#define elf_backend_want_plt_sym 0
+#define elf_backend_got_header_size 12
+
+#define elf_backend_may_use_rel_p 0
+#define elf_backend_may_use_rela_p 1
+#define elf_backend_default_use_rela_p 1