text: /* IQ2000-specific support for 32-bit ELF.
     Copyright (C) 2003-2022 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 */
  	 3,			     /* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 1,			     /* size (0 = byte, 1 = short, 2 = long) */
  	 16,			     /* bitsize */
  	 false,			     /* pc_relative */
  	 0,			     /* bitpos */
  	 complain_overflow_bitfield, /* complain_on_overflow */
  	 bfd_elf_generic_reloc,	     /* 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 */
  	 2,			     /* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			/* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			     /* size (0 = byte, 1 = short, 2 = long) */
  	 32,			     /* bitsize */
  	 false,			     /* pc_relative */
  	 0,			     /* bitpos */
  	 complain_overflow_bitfield, /* complain_on_overflow */
  	 bfd_elf_generic_reloc,	     /* 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 */
  	 2,			   /* size (0 = byte, 1 = short, 2 = long) */
  	 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 */
  	 2,			   /* size (0 = byte, 1 = short, 2 = long) */
  	 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, 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,
  			 Elf_Internal_Rela *rel,
  			 struct elf_link_hash_entry *h,
  			 Elf_Internal_Sym *sym)
  {
    if (h != NULL)
      switch (ELF32_R_TYPE (rel->r_info))
        {
        case R_IQ2000_GNU_VTINHERIT:
        case R_IQ2000_GNU_VTENTRY:
  	return NULL;
        }
  
    return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
  }
  
  
  /* 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];
  
    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"
  