+ /* Adjust all the relocs. */
+ symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+ {
+ /* Get the new reloc address. */
+ if ((irel->r_offset > addr && irel->r_offset < toaddr))
+ irel->r_offset -= count;
+ }
+
+ for (p = abfd->sections; p != NULL; p = p->next)
+ msp430_elf_relax_adjust_locals(abfd,p,addr,count,sec_shndx,toaddr);
+
+ /* Adjust the local symbols defined in this section. */
+ symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
+ if (isym->st_shndx == sec_shndx
+ && isym->st_value > addr && isym->st_value < toaddr)
+ isym->st_value -= count;
+
+ /* Now adjust the global symbols defined in this section. */
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (abfd);
+ end_hashes = sym_hashes + symcount;
+ for (; sym_hashes < end_hashes; sym_hashes++)
+ {
+ struct elf_link_hash_entry *sym_hash = *sym_hashes;
+
+ if ((sym_hash->root.type == bfd_link_hash_defined
+ || sym_hash->root.type == bfd_link_hash_defweak)
+ && sym_hash->root.u.def.section == sec
+ && sym_hash->root.u.def.value > addr
+ && sym_hash->root.u.def.value < toaddr)
+ sym_hash->root.u.def.value -= count;
+ }
+
+ return TRUE;
+}
+
+
+static bfd_boolean
+msp430_elf_relax_section (bfd * abfd, asection * sec,
+ struct bfd_link_info * link_info,
+ bfd_boolean * again)
+{
+ Elf_Internal_Shdr * symtab_hdr;
+ Elf_Internal_Rela * internal_relocs;
+ Elf_Internal_Rela * irel;
+ Elf_Internal_Rela * irelend;
+ bfd_byte * contents = NULL;
+ Elf_Internal_Sym * isymbuf = NULL;
+
+ /* Assume nothing changes. */
+ *again = FALSE;
+
+ /* We don't have to do anything for a relocatable link, if
+ this section does not have relocs, or if this is not a
+ code section. */
+ if (link_info->relocatable
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0)
+ return TRUE;
+
+ symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
+
+ /* Get a copy of the native relocations. */
+ internal_relocs =
+ _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ /* Walk through them looking for relaxing opportunities. */
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ bfd_vma symval;
+
+ /* If this isn't something that can be relaxed, then ignore
+ this reloc. */
+ if (ELF32_R_TYPE (irel->r_info) != (int) R_MSP430_RL_PCREL)
+ continue;
+
+ /* Get the section contents if we haven't done so already. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
+ goto error_return;
+ }
+
+ /* Read this BFD's local symbols if we haven't done so already. */
+ if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ Elf_Internal_Sym *isym;
+ asection *sym_sec;
+
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
+ sym_sec = bfd_und_section_ptr;
+ else if (isym->st_shndx == SHN_ABS)
+ sym_sec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ sym_sec = bfd_com_section_ptr;
+ else
+ sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ symval = (isym->st_value
+ + sym_sec->output_section->vma + sym_sec->output_offset);
+ }
+ else
+ {
+ unsigned long indx;
+ struct elf_link_hash_entry *h;
+
+ /* An external symbol. */
+ indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
+
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ /* This appears to be a reference to an undefined
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
+ continue;
+
+ symval = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+
+ /* For simplicity of coding, we are going to modify the section
+ contents, the section relocs, and the BFD symbol table. We
+ must tell the rest of the code not to free up this
+ information. It would be possible to instead create a table
+ of changes which have to be made, as is done in coff-mips.c;
+ that would be more work, but would require less memory when
+ the linker is run. */
+
+ /* Try to turn a 16bit pc-relative branch into a 10bit pc-relative
+ branch. */
+ /* Paranoia? paranoia... */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MSP430_RL_PCREL)
+ {
+ bfd_vma value = symval;
+
+ /* Deal with pc-relative gunk. */
+ value -= (sec->output_section->vma + sec->output_offset);
+ value -= irel->r_offset;
+ value += irel->r_addend;
+
+ /* See if the value will fit in 10 bits, note the high value is
+ 1016 as the target will be two bytes closer if we are
+ able to relax. */
+ if ((long) value < 1016 && (long) value > -1016)
+ {
+ int code0 = 0, code1 = 0, code2 = 0;
+ int i;
+ struct rcodes_s *rx;
+
+ /* Get the opcode. */
+ if (irel->r_offset >= 6)
+ code0 = bfd_get_16 (abfd, contents + irel->r_offset - 6);
+
+ if (irel->r_offset >= 4)
+ code1 = bfd_get_16 (abfd, contents + irel->r_offset - 4);
+
+ code2 = bfd_get_16 (abfd, contents + irel->r_offset - 2);
+
+ if (code2 != 0x4010)
+ continue;
+
+ /* Check r4 and r3. */
+ for (i = NUMB_RELAX_CODES - 1; i >= 0; i--)
+ {
+ rx = &rcode[i];
+ if (rx->cdx == 2 && rx->f0 == code0 && rx->f1 == code1)
+ break;
+ else if (rx->cdx == 1 && rx->f1 == code1)
+ break;
+ else if (rx->cdx == 0) /* This is an unconditional jump. */
+ break;
+ }
+
+ /* Check labels:
+ .Label0: ; we do not care about this label
+ jeq +6
+ .Label1: ; make sure there is no label here
+ jl +4
+ .Label2: ; make sure there is no label here
+ br .Label_dst
+
+ So, if there is .Label1 or .Label2 we cannot relax this code.
+ This actually should not happen, cause for relaxable
+ instructions we use RL_PCREL reloc instead of 16_PCREL.
+ Will change this in the future. */
+
+ if (rx->cdx > 0
+ && msp430_elf_symbol_address_p (abfd, sec, isymbuf,
+ irel->r_offset - 2))
+ continue;
+ if (rx->cdx > 1
+ && msp430_elf_symbol_address_p (abfd, sec, isymbuf,
+ irel->r_offset - 4))
+ continue;
+
+ /* Note that we've changed the relocs, section contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+
+ /* Fix the relocation's type. */
+ if (rx->labels == 3) /* Handle special cases. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MSP430_2X_PCREL);
+ else
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MSP430_10_PCREL);
+
+ /* Fix the opcode right way. */
+ bfd_put_16 (abfd, rx->t0, contents + irel->r_offset - rx->off);
+ if (rx->t1)
+ bfd_put_16 (abfd, rx->t1,
+ contents + irel->r_offset - rx->off + 2);
+
+ /* Delete bytes. */
+ if (!msp430_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset - rx->off +
+ rx->ncl, rx->bs))
+ goto error_return;
+
+ /* Handle unconditional jumps. */
+ if (rx->cdx == 0)
+ irel->r_offset -= 2;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = TRUE;
+ }
+ }
+ }
+
+ if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
+ {
+ if (!link_info->keep_memory)
+ free (isymbuf);
+ else
+ {
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+ }
+ }
+
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ {
+ if (!link_info->keep_memory)
+ free (contents);
+ else
+ {
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
+ }
+ }
+
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ return TRUE;