/* IQ2000-specific support for 32-bit ELF.

   Copyright (C) 2003-2026 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#include "sysdep.h"

#include "bfd.h"

#include "libbfd.h"

#include "elf-bfd.h"

#include "elf/iq2000.h"

#include "libiberty.h"

/* Forward declarations.  */

static bfd_reloc_status_type iq2000_elf_howto_hi16_reloc (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);

static reloc_howto_type iq2000_elf_howto_table [] =

{

  /* This reloc does nothing.  */

  HOWTO (R_IQ2000_NONE,        /* type */

   0,          /* rightshift */

   0,          /* size */

   0,          /* bitsize */

   false,          /* pc_relative */

   0,          /* bitpos */

   complain_overflow_dont,     /* complain_on_overflow */

   bfd_elf_generic_reloc,      /* special_function */

   "R_IQ2000_NONE",      /* name */

   false,          /* partial_inplace */

   0,          /* src_mask */

   0,          /* dst_mask */

   false),         /* pcrel_offset */

  /* A 16 bit absolute relocation.  */

  HOWTO (R_IQ2000_16,        /* type */

   0,          /* rightshift */

   2,          /* size */

   16,           /* bitsize */

   false,          /* pc_relative */

   0,          /* bitpos */

   complain_overflow_bitfield, /* complain_on_overflow */

   bfd_elf_generic_reloc,      /* special_function */

   "R_IQ2000_16",        /* name */

   false,          /* partial_inplace */

   0x0000,         /* src_mask */

   0xffff,         /* dst_mask */

   false),         /* pcrel_offset */

  /* A 32 bit absolute relocation.  */

  HOWTO (R_IQ2000_32,        /* type */

   0,          /* rightshift */

   4,          /* size */

   31,           /* bitsize */

   false,          /* pc_relative */

   0,          /* bitpos */

   complain_overflow_bitfield, /* complain_on_overflow */

   bfd_elf_generic_reloc,      /* special_function */

   "R_IQ2000_32",        /* name */

   false,          /* partial_inplace */

   0x00000000,         /* src_mask */

   0x7fffffff,         /* dst_mask */

   false),         /* pcrel_offset */

  /* 26 bit branch address.  */

  HOWTO (R_IQ2000_26,   /* type */

   2,     /* rightshift */

   4,     /* size */

   26,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

        /* This needs complex overflow

           detection, because the upper four

           bits must match the PC.  */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_26",   /* name */

   false,     /* partial_inplace */

   0x00000000,    /* src_mask */

   0x03ffffff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* 16 bit PC relative reference.  */

  HOWTO (R_IQ2000_PC16,   /* type */

   2,     /* rightshift */

   4,     /* size */

   16,      /* bitsize */

   true,      /* pc_relative */

   0,     /* bitpos */

   complain_overflow_signed, /* complain_on_overflow */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_PC16", /* name */

   false,     /* partial_inplace */

   0x0000,    /* src_mask */

   0xffff,    /* dst_mask */

   true),     /* pcrel_offset */

  /* high 16 bits of symbol value.  */

  HOWTO (R_IQ2000_HI16,   /* type */

   16,      /* rightshift */

   4,     /* size */

   15,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

   iq2000_elf_howto_hi16_reloc, /* special_function */

   "R_IQ2000_HI16", /* name */

   false,     /* partial_inplace */

   0x0000,    /* src_mask */

   0x7fff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* Low 16 bits of symbol value.  */

  HOWTO (R_IQ2000_LO16,   /* type */

   0,     /* rightshift */

   4,     /* size */

   16,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_LO16", /* name */

   false,     /* partial_inplace */

   0x0000,    /* src_mask */

   0xffff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* 16-bit jump offset.  */

  HOWTO (R_IQ2000_OFFSET_16,  /* type */

   2,     /* rightshift */

   4,     /* size */

   16,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_OFFSET_16",  /* name */

   false,     /* partial_inplace */

   0x0000,    /* src_mask */

   0xffff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* 21-bit jump offset.  */

  HOWTO (R_IQ2000_OFFSET_21,  /* type */

   2,     /* rightshift */

   4,     /* size */

   21,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_OFFSET_21",  /* name */

   false,     /* partial_inplace */

   0x000000,    /* src_mask */

   0x1fffff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* unsigned high 16 bits of value.  */

  HOWTO (R_IQ2000_OFFSET_21,  /* type */

   16,      /* rightshift */

   4,     /* size */

   16,      /* bitsize */

   false,     /* pc_relative */

   0,     /* bitpos */

   complain_overflow_dont, /* complain_on_overflow */

   bfd_elf_generic_reloc, /* special_function */

   "R_IQ2000_UHI16",  /* name */

   false,     /* partial_inplace */

   0x0000,    /* src_mask */

   0x7fff,    /* dst_mask */

   false),    /* pcrel_offset */

  /* A 32 bit absolute debug relocation.  */

  HOWTO (R_IQ2000_32_DEBUG,      /* type */

   0,          /* rightshift */

   4,          /* size */

   32,           /* bitsize */

   false,          /* pc_relative */

   0,          /* bitpos */

   complain_overflow_bitfield, /* complain_on_overflow */

   bfd_elf_generic_reloc,      /* special_function */

   "R_IQ2000_32",        /* name */

   false,          /* partial_inplace */

   0x00000000,         /* src_mask */

   0xffffffff,         /* dst_mask */

   false),         /* pcrel_offset */

};

/* GNU extension to record C++ vtable hierarchy.  */

static reloc_howto_type iq2000_elf_vtinherit_howto =

  HOWTO (R_IQ2000_GNU_VTINHERIT,    /* type */

   0,        /* rightshift */

   4,        /* size */

   0,        /* bitsize */

   false,        /* pc_relative */

   0,        /* bitpos */

   complain_overflow_dont,   /* complain_on_overflow */

   NULL,         /* special_function */

   "R_IQ2000_GNU_VTINHERIT",  /* name */

   false,        /* partial_inplace */

   0,        /* src_mask */

   0,        /* dst_mask */

   false);       /* pcrel_offset */

/* GNU extension to record C++ vtable member usage.  */

static reloc_howto_type iq2000_elf_vtentry_howto =

  HOWTO (R_IQ2000_GNU_VTENTRY,     /* type */

   0,        /* rightshift */

   4,        /* size */

   0,        /* bitsize */

   false,        /* pc_relative */

   0,        /* bitpos */

   complain_overflow_dont,   /* complain_on_overflow */

   NULL,         /* special_function */

   "R_IQ2000_GNU_VTENTRY",    /* name */

   false,        /* partial_inplace */

   0,        /* src_mask */

   0,        /* dst_mask */

   false);       /* pcrel_offset */

static bfd_reloc_status_type

iq2000_elf_howto_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,

           arelent *reloc_entry,

           asymbol *symbol,

           void * data,

           asection *input_section,

           bfd *output_bfd,

           char **error_message ATTRIBUTE_UNUSED)

{

  bfd_reloc_status_type ret;

  bfd_vma relocation;

  /* If we're relocating and this an external symbol,

     we don't want to change anything.  */

  if (output_bfd != (bfd *) NULL

      && (symbol->flags & BSF_SECTION_SYM) == 0

      && reloc_entry->addend == 0)

    {

      reloc_entry->address += input_section->output_offset;

      return bfd_reloc_ok;

    }

  if (bfd_is_com_section (symbol->section))

    relocation = 0;

  else

    relocation = symbol->value;

  relocation += symbol->section->output_section->vma;

  relocation += symbol->section->output_offset;

  relocation += reloc_entry->addend;

  /* If %lo will have sign-extension, compensate by add 0x10000 to hi portion.  */

  if (relocation & 0x8000)

    reloc_entry->addend += 0x10000;

  /* Now do the reloc in the usual way.  */

  ret = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,

        input_section, output_bfd, error_message);

  /* Put it back the way it was.  */

  if (relocation & 0x8000)

    reloc_entry->addend -= 0x10000;

  return ret;

}

static bfd_reloc_status_type

iq2000_elf_relocate_hi16 (bfd *input_bfd,

        Elf_Internal_Rela *relhi,

        bfd_byte *contents,

        bfd_vma value)

{

  bfd_vma insn;

  insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);

  value += relhi->r_addend;

  value &= 0x7fffffff; /* Mask off top-bit which is Harvard mask bit.  */

  /* If top-bit of %lo value is on, this means that %lo will

     sign-propagate and so we compensate by adding 1 to %hi value.  */

  if (value & 0x8000)

    value += 0x10000;

  value >>= 16;

  insn = ((insn & ~0xFFFF) | value);

  bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);

  return bfd_reloc_ok;

}

static bfd_reloc_status_type

iq2000_elf_relocate_offset16 (bfd *input_bfd,

            Elf_Internal_Rela *rel,

            bfd_byte *contents,

            bfd_vma value,

            bfd_vma location)

{

  bfd_vma insn;

  bfd_vma jtarget;

  insn = bfd_get_32 (input_bfd, contents + rel->r_offset);

  value += rel->r_addend;

  if (value & 3)

    return bfd_reloc_dangerous;

  jtarget = (value & 0x3fffc) | (location & 0xf0000000L);

  if (jtarget != value)

    return bfd_reloc_overflow;

  insn = (insn & ~0xFFFF) | ((value >> 2) & 0xFFFF);

  bfd_put_32 (input_bfd, insn, contents + rel->r_offset);

  return bfd_reloc_ok;

}

/* Map BFD reloc types to IQ2000 ELF reloc types.  */

static reloc_howto_type *

iq2000_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,

        bfd_reloc_code_real_type code)

{

  /* Note that the iq2000_elf_howto_table is indxed by the R_

     constants.  Thus, the order that the howto records appear in the

     table *must* match the order of the relocation types defined in

     include/elf/iq2000.h.  */

  switch (code)

    {

    case BFD_RELOC_NONE:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_NONE];

    case BFD_RELOC_16:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_16];

    case BFD_RELOC_32:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_32];

    case BFD_RELOC_MIPS_JMP:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_26];

    case BFD_RELOC_IQ2000_OFFSET_16:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_16];

    case BFD_RELOC_IQ2000_OFFSET_21:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_21];

    case BFD_RELOC_16_PCREL_S2:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_PC16];

    case BFD_RELOC_HI16:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_HI16];

    case BFD_RELOC_IQ2000_UHI16:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_UHI16];

    case BFD_RELOC_LO16:

      return &iq2000_elf_howto_table[ (int) R_IQ2000_LO16];

    case BFD_RELOC_VTABLE_INHERIT:

      return &iq2000_elf_vtinherit_howto;

    case BFD_RELOC_VTABLE_ENTRY:

      return &iq2000_elf_vtentry_howto;

    default:

      /* Pacify gcc -Wall.  */

      return NULL;

    }

  return NULL;

}

static reloc_howto_type *

iq2000_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)

{

  unsigned int i;

  for (i = 0;

       i < (sizeof (iq2000_elf_howto_table)

      / sizeof (iq2000_elf_howto_table[0]));

       i++)

    if (iq2000_elf_howto_table[i].name != NULL

  && strcasecmp (iq2000_elf_howto_table[i].name, r_name) == 0)

      return &iq2000_elf_howto_table[i];

  if (strcasecmp (iq2000_elf_vtinherit_howto.name, r_name) == 0)

    return &iq2000_elf_vtinherit_howto;

  if (strcasecmp (iq2000_elf_vtentry_howto.name, r_name) == 0)

    return &iq2000_elf_vtentry_howto;

  return NULL;

}

/* Perform a single relocation.  By default we use the standard BFD

   routines.  */

static bfd_reloc_status_type

iq2000_final_link_relocate (reloc_howto_type *  howto,

          bfd *   input_bfd,

          asection *    input_section,

          bfd_byte *    contents,

          Elf_Internal_Rela * rel,

          bfd_vma   relocation)

{

  return _bfd_final_link_relocate (howto, input_bfd, input_section,

           contents, rel->r_offset,

           relocation, rel->r_addend);

}

/* Set the howto pointer for a IQ2000 ELF reloc.  */

static bool

iq2000_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,

         arelent * cache_ptr,

         Elf_Internal_Rela * dst)

{

  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);

  switch (r_type)

    {

    case R_IQ2000_GNU_VTINHERIT:

      cache_ptr->howto = & iq2000_elf_vtinherit_howto;

      break;

    case R_IQ2000_GNU_VTENTRY:

      cache_ptr->howto = & iq2000_elf_vtentry_howto;

      break;

    default:

      if (r_type >= ARRAY_SIZE (iq2000_elf_howto_table))

  {

    /* xgettext:c-format */

    _bfd_error_handler (_("%pB: unsupported relocation type %#x"),

            abfd, r_type);

    bfd_set_error (bfd_error_bad_value);

    return false;

  }

      cache_ptr->howto = & iq2000_elf_howto_table [r_type];

      break;

    }

  return true;

}

/* Look through the relocs for a section during the first phase.

   Since we don't do .gots or .plts, we just need to consider the

   virtual table relocs for gc.  */

static bool

iq2000_elf_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;

  const Elf_Internal_Rela *rel;

  const Elf_Internal_Rela *rel_end;

  bool changed = false;

  if (bfd_link_relocatable (info))

    return true;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;

  sym_hashes = elf_sym_hashes (abfd);

  rel_end = relocs + sec->reloc_count;

  for (rel = relocs; rel < rel_end; rel++)

    {

      struct elf_link_hash_entry *h;

      unsigned long r_symndx;

      r_symndx = ELF32_R_SYM (rel->r_info);

      if (r_symndx < symtab_hdr->sh_info)

  h = NULL;

      else

  {

    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;

  }

      switch (ELF32_R_TYPE (rel->r_info))

  {

    /* This relocation describes the C++ object vtable

       hierarchy.  Reconstruct it for later use during GC.  */

  case R_IQ2000_GNU_VTINHERIT:

    if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))

      return false;

    break;

    /* This relocation describes which C++ vtable entries

       are actually used.  Record for later use during GC.  */

  case R_IQ2000_GNU_VTENTRY:

    if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))

      return false;

    break;

  case R_IQ2000_32:

    /* For debug section, change to special harvard-aware relocations.  */

    if (startswith (sec->name, ".debug")

        || startswith (sec->name, ".stab")

        || startswith (sec->name, ".eh_frame"))

      {

        ((Elf_Internal_Rela *) rel)->r_info

    = ELF32_R_INFO (ELF32_R_SYM (rel->r_info), R_IQ2000_32_DEBUG);

        changed = true;

      }

    break;

  }

    }

  if (changed)

    /* Note that we've changed relocs, otherwise if !info->keep_memory

       we'll free the relocs and lose our changes.  */

    elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;

  return true;

}

/* Relocate a IQ2000 ELF section.

   There is some attempt to make this function usable for many architectures,

   both USE_REL and USE_RELA ['twould be nice if such a critter existed],

   if only to serve as a learning tool.

   The RELOCATE_SECTION function is called by the new ELF backend linker

   to handle the relocations for a section.

   The relocs are always passed as Rela structures; if the section

   actually uses Rel structures, the r_addend field will always be

   zero.

   This function is responsible for adjusting the section contents as

   necessary, and (if using Rela relocs and generating a relocatable

   output file) adjusting the reloc addend as necessary.

   This function does not have to worry about setting the reloc

   address or the reloc symbol index.

   LOCAL_SYMS is a pointer to the swapped in local symbols.

   LOCAL_SECTIONS is an array giving the section in the input file

   corresponding to the st_shndx field of each local symbol.

   The global hash table entry for the global symbols can be found

   via elf_sym_hashes (input_bfd).

   When generating relocatable output, this function must handle

   STB_LOCAL/STT_SECTION symbols specially.  The output symbol is

   going to be the section symbol corresponding to the output

   section, which means that the addend must be adjusted

   accordingly.  */

static int

iq2000_elf_relocate_section (bfd *         output_bfd ATTRIBUTE_UNUSED,

           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;

  Elf_Internal_Rela *   rel;

  Elf_Internal_Rela *   relend;

  symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;

  sym_hashes = elf_sym_hashes (input_bfd);

  relend     = relocs + input_section->reloc_count;

  for (rel = relocs; rel < relend; rel ++)

    {

      reloc_howto_type *     howto;

      unsigned long      r_symndx;

      Elf_Internal_Sym *     sym;

      asection *       sec;

      struct elf_link_hash_entry * h;

      bfd_vma        relocation;

      bfd_reloc_status_type    r;

      const char *       name = NULL;

      int        r_type;

      r_type = ELF32_R_TYPE (rel->r_info);

      if (   r_type == R_IQ2000_GNU_VTINHERIT

    || r_type == R_IQ2000_GNU_VTENTRY)

  continue;

      r_symndx = ELF32_R_SYM (rel->r_info);

      howto  = iq2000_elf_howto_table + ELF32_R_TYPE (rel->r_info);

      h      = NULL;

      sym    = NULL;

      sec    = NULL;

      if (r_symndx < symtab_hdr->sh_info)

  {

    asection *osec;

    sym = local_syms + r_symndx;

    osec = sec = local_sections [r_symndx];

    if ((sec->flags & SEC_MERGE)

        && ELF_ST_TYPE (sym->st_info) == STT_SECTION)

      /* This relocation is relative to a section symbol that is

         going to be merged.  Change it so that it is relative

         to the merged section symbol.  */

      rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, &sec,

                rel->r_addend);

    relocation = (sec->output_section->vma

      + sec->output_offset

      + sym->st_value);

    name = bfd_elf_string_from_elf_section

      (input_bfd, symtab_hdr->sh_link, sym->st_name);

    name = name == NULL ? bfd_section_name (osec) : name;

  }

      else

  {

    bool unresolved_reloc;

    bool warned, ignored;

    RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,

           r_symndx, symtab_hdr, sym_hashes,

           h, sec, relocation,

           unresolved_reloc, warned, ignored);

    name = h->root.root.string;

  }

      if (sec != NULL && discarded_section (sec))

  RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,

           rel, 1, relend, R_IQ2000_NONE,

           howto, 0, contents);

      if (bfd_link_relocatable (info))

  continue;

      switch (r_type)

  {

  case R_IQ2000_HI16:

    r = iq2000_elf_relocate_hi16 (input_bfd, rel, contents, relocation);

    break;

  case R_IQ2000_OFFSET_16:

    r = iq2000_elf_relocate_offset16 (input_bfd, rel, contents, relocation,

              input_section->output_section->vma

              + input_section->output_offset

              + rel->r_offset);

    break;

  case R_IQ2000_PC16:

    rel->r_addend -= 4;

    /* Fall through.  */

  default:

    r = iq2000_final_link_relocate (howto, input_bfd, input_section,

           contents, rel, relocation);

    break;

  }

      if (r != bfd_reloc_ok)

  {

    const char * msg = (const char *) NULL;

    switch (r)

      {

      case bfd_reloc_overflow:

        (*info->callbacks->reloc_overflow)

    (info, (h ? &h->root : NULL), name, howto->name,

     (bfd_vma) 0, input_bfd, input_section, rel->r_offset);

        break;

      case bfd_reloc_undefined:

        (*info->callbacks->undefined_symbol)

    (info, name, input_bfd, input_section, rel->r_offset, true);

        break;

      case bfd_reloc_outofrange:

        msg = _("internal error: out of range error");

        break;

      case bfd_reloc_notsupported:

        msg = _("internal error: unsupported relocation error");

        break;

      case bfd_reloc_dangerous:

        msg = _("internal error: dangerous relocation");

        break;

      default:

        msg = _("internal error: unknown error");

        break;

      }

    if (msg)

      (*info->callbacks->warning) (info, msg, name, input_bfd,

           input_section, rel->r_offset);

  }

    }

  return true;

}

/* Return the section that should be marked against GC for a given

   relocation.  */

static asection *

iq2000_elf_gc_mark_hook (asection *sec,

       struct bfd_link_info *info,

       struct elf_reloc_cookie *cookie,

       struct elf_link_hash_entry *h,

       unsigned int symndx)

{

  if (h != NULL)

    switch (ELF32_R_TYPE (cookie->rel->r_info))

      {

      case R_IQ2000_GNU_VTINHERIT:

      case R_IQ2000_GNU_VTENTRY:

  return NULL;

      }

  return _bfd_elf_gc_mark_hook (sec, info, cookie, h, symndx);

}

/* Return the MACH for an e_flags value.  */

static int

elf32_iq2000_machine (bfd *abfd)

{

  switch (elf_elfheader (abfd)->e_flags & EF_IQ2000_CPU_MASK)

    {

    case EF_IQ2000_CPU_IQ10:

      return bfd_mach_iq10;

    case EF_IQ2000_CPU_IQ2000:

    default:

      return bfd_mach_iq2000;

    }

}

/* Function to set the ELF flag bits.  */

static bool

iq2000_elf_set_private_flags (bfd *abfd, flagword flags)

{

  elf_elfheader (abfd)->e_flags = flags;

  elf_flags_init (abfd) = true;

  return true;

}

/* Merge backend specific data from an object

   file to the output object file when linking.  */

static bool

iq2000_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)

{

  bfd *obfd = info->output_bfd;

  flagword old_flags, old_partial;

  flagword new_flags, new_partial;

  bool error = false;

  char new_opt[80];

  char old_opt[80];

  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)

    return true;

  new_opt[0] = old_opt[0] = '\0';

  new_flags = elf_elfheader (ibfd)->e_flags;

  old_flags = elf_elfheader (obfd)->e_flags;

  if (!elf_flags_init (obfd))

    {

      /* First call, no flags set.  */

      elf_flags_init (obfd) = true;

      elf_elfheader (obfd)->e_flags = new_flags;

    }

  else if (new_flags != old_flags)

    {

      /* Warn if different cpu is used, but allow a

   specific cpu to override the generic cpu.  */

      new_partial = (new_flags & EF_IQ2000_CPU_MASK);

      old_partial = (old_flags & EF_IQ2000_CPU_MASK);

      if (new_partial != old_partial)

  {

    switch (new_partial)

      {

      case EF_IQ2000_CPU_IQ10:

        strcat (new_opt, " -m10");

        break;

      default:

      case EF_IQ2000_CPU_IQ2000:

        strcat (new_opt, " -m2000");

        break;

      }

    switch (old_partial)

      {

      case EF_IQ2000_CPU_IQ10:

        strcat (old_opt, " -m10");

        break;

      default:

      case EF_IQ2000_CPU_IQ2000:

        strcat (old_opt, " -m2000");

        break;

      }

  }

      /* Print out any mismatches from above.  */

      if (new_opt[0])

  {

    error = true;

    _bfd_error_handler

      /* xgettext:c-format */

      (_("%pB: compiled with %s and linked with modules compiled with %s"),

       ibfd, new_opt, old_opt);

  }

      new_flags &= ~ EF_IQ2000_ALL_FLAGS;

      old_flags &= ~ EF_IQ2000_ALL_FLAGS;

      /* Warn about any other mismatches.  */

      if (new_flags != old_flags)

  {

    error = true;

    _bfd_error_handler

      /* xgettext:c-format */

      (_("%pB: uses different e_flags (%#x) fields than previous modules (%#x)"),

       ibfd, new_flags, old_flags);

  }

    }

  if (error)

    bfd_set_error (bfd_error_bad_value);

  return !error;

}

static bool

iq2000_elf_print_private_bfd_data (bfd *abfd, void * ptr)

{

  FILE *file = (FILE *) ptr;

  flagword flags;

  BFD_ASSERT (abfd != NULL && ptr != NULL);

  /* Print normal ELF private data.  */

  _bfd_elf_print_private_bfd_data (abfd, ptr);

  flags = elf_elfheader (abfd)->e_flags;

  fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);

  switch (flags & EF_IQ2000_CPU_MASK)

    {

    case EF_IQ2000_CPU_IQ10:

      fprintf (file, " -m10");

      break;

    case EF_IQ2000_CPU_IQ2000:

      fprintf (file, " -m2000");

      break;

    default:

      break;

    }

  fputc ('\n', file);

  return true;

}

static

bool

iq2000_elf_object_p (bfd *abfd)

{

  bfd_default_set_arch_mach (abfd, bfd_arch_iq2000,

           elf32_iq2000_machine (abfd));

  return true;

}

#define ELF_ARCH    bfd_arch_iq2000

#define ELF_MACHINE_CODE  EM_IQ2000

#define ELF_MAXPAGESIZE   0x1000

#define TARGET_BIG_SYM    iq2000_elf32_vec

#define TARGET_BIG_NAME   "elf32-iq2000"

#define elf_info_to_howto_rel     NULL

#define elf_info_to_howto     iq2000_info_to_howto_rela

#define elf_backend_relocate_section    iq2000_elf_relocate_section

#define elf_backend_gc_mark_hook    iq2000_elf_gc_mark_hook

#define elf_backend_check_relocs    iq2000_elf_check_relocs

#define elf_backend_object_p      iq2000_elf_object_p

#define elf_backend_rela_normal     1

#define elf_backend_can_gc_sections   1

#define bfd_elf32_bfd_reloc_type_lookup   iq2000_reloc_type_lookup

#define bfd_elf32_bfd_reloc_name_lookup iq2000_reloc_name_lookup

#define bfd_elf32_bfd_set_private_flags   iq2000_elf_set_private_flags

#define bfd_elf32_bfd_merge_private_bfd_data  iq2000_elf_merge_private_bfd_data

#define bfd_elf32_bfd_print_private_bfd_data  iq2000_elf_print_private_bfd_data

#include "elf32-target.h"