[deliverable/binutils-gdb.git] / bfd / elf32-moxie.c

/* moxie-specific support for 32-bit ELF.
   Copyright (C) 2009-2020 Free Software Foundation, Inc.

   Copied from elf32-fr30.c which is..
   Copyright (C) 1998-2020 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/moxie.h"

/* Forward declarations.  */

static reloc_howto_type moxie_elf_howto_table [] =
{
  /* This reloc does nothing.  */
  HOWTO (R_MOXIE_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_MOXIE_NONE",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 32 bit absolute relocation.  */
  HOWTO (R_MOXIE_32,		/* 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_MOXIE_32",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 10 bit PC-relative relocation.  */
  HOWTO (R_MOXIE_PCREL10,	/* type.  */
	 1,			/* rightshift.  */
	 1,			/* size (0 = byte, 1 = short, 2 = long).  */
	 10,			/* bitsize.  */
	 TRUE,			/* pc_relative.  */
	 0,			/* bitpos.  */
	 complain_overflow_signed, /* complain_on_overflow.  */
	 bfd_elf_generic_reloc,	/* special_function.  */
	 "R_MOXIE_PCREL10",		/* name.  */
	 FALSE,			/* partial_inplace.  */
	 0,			/* src_mask.  */
	 0x000003FF,		/* dst_mask.  */
	 TRUE),			/* pcrel_offset.  */
};
\f
/* Map BFD reloc types to MOXIE ELF reloc types.  */

struct moxie_reloc_map
{
  bfd_reloc_code_real_type bfd_reloc_val;
  unsigned int moxie_reloc_val;
};

static const struct moxie_reloc_map moxie_reloc_map [] =
{
  { BFD_RELOC_NONE,	       R_MOXIE_NONE },
  { BFD_RELOC_32,	       R_MOXIE_32 },
  { BFD_RELOC_MOXIE_10_PCREL,  R_MOXIE_PCREL10 },
};

static reloc_howto_type *
moxie_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
			 bfd_reloc_code_real_type code)
{
  unsigned int i;

  for (i = sizeof (moxie_reloc_map) / sizeof (moxie_reloc_map[0]);
       i--;)
    if (moxie_reloc_map [i].bfd_reloc_val == code)
      return & moxie_elf_howto_table [moxie_reloc_map[i].moxie_reloc_val];

  return NULL;
}

static reloc_howto_type *
moxie_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
  unsigned int i;

  for (i = 0;
       i < sizeof (moxie_elf_howto_table) / sizeof (moxie_elf_howto_table[0]);
       i++)
    if (moxie_elf_howto_table[i].name != NULL
	&& strcasecmp (moxie_elf_howto_table[i].name, r_name) == 0)
      return &moxie_elf_howto_table[i];

  return NULL;
}

/* Set the howto pointer for an MOXIE ELF reloc.  */

static bfd_boolean
moxie_info_to_howto_rela (bfd *abfd,
			  arelent *cache_ptr,
			  Elf_Internal_Rela *dst)
{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  if (r_type >= (unsigned int) R_MOXIE_max)
    {
      /* 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 = & moxie_elf_howto_table [r_type];
  return TRUE;
}
\f
/* Perform a single relocation.  By default we use the standard BFD
   routines, but a few relocs, we have to do them ourselves.  */

static bfd_reloc_status_type
moxie_final_link_relocate (reloc_howto_type *howto,
			   bfd *input_bfd,
			   asection *input_section,
			   bfd_byte *contents,
			   Elf_Internal_Rela *rel,
			   bfd_vma relocation)
{
  bfd_reloc_status_type r = bfd_reloc_ok;

  switch (howto->type)
    {
    default:
      r = _bfd_final_link_relocate (howto, input_bfd, input_section,
				    contents, rel->r_offset,
				    relocation, rel->r_addend);
    }

  return r;
}
\f
/* Relocate an MOXIE ELF section.

   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 bfd_boolean
moxie_elf_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;
  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;
      int r_type;

      r_type = ELF32_R_TYPE (rel->r_info);
      r_symndx = ELF32_R_SYM (rel->r_info);
      howto  = moxie_elf_howto_table + r_type;
      h      = NULL;
      sym    = NULL;
      sec    = NULL;

      if (r_symndx < symtab_hdr->sh_info)
	{
	  sym = local_syms + r_symndx;
	  sec = local_sections [r_symndx];
	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);

	  name = bfd_elf_string_from_elf_section
	    (input_bfd, symtab_hdr->sh_link, sym->st_name);
	  name = name == NULL ? bfd_section_name (sec) : name;
	}
      else
	{
	  bfd_boolean unresolved_reloc, 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;

      r = moxie_final_link_relocate (howto, input_bfd, input_section,
				     contents, rel, relocation);

      if (r != bfd_reloc_ok)
	{
	  const char * msg = 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;
}
\f
/* Return the section that should be marked against GC for a given
   relocation.  */

static asection *
moxie_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)
{
  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}

/* 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 bfd_boolean
moxie_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;

  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;
	}
    }

  return TRUE;
}
\f
#define ELF_ARCH		bfd_arch_moxie
#define ELF_MACHINE_CODE	EM_MOXIE
#define ELF_MACHINE_ALT1	EM_MOXIE_OLD
#define ELF_MAXPAGESIZE		0x1

#define TARGET_BIG_SYM		moxie_elf32_be_vec
#define TARGET_BIG_NAME		"elf32-bigmoxie"
#define TARGET_LITTLE_SYM	moxie_elf32_le_vec
#define TARGET_LITTLE_NAME	"elf32-littlemoxie"

#define elf_info_to_howto_rel			NULL
#define elf_info_to_howto			moxie_info_to_howto_rela
#define elf_backend_relocate_section		moxie_elf_relocate_section
#define elf_backend_gc_mark_hook		moxie_elf_gc_mark_hook
#define elf_backend_check_relocs		moxie_elf_check_relocs

#define elf_backend_can_gc_sections		1
#define elf_backend_rela_normal			1

#define bfd_elf32_bfd_reloc_type_lookup		moxie_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup		moxie_reloc_name_lookup

#include "elf32-target.h"
Commit	Line	Data
20135e4c	1	/* moxie-specific support for 32-bit ELF.
b3adc24a	2	Copyright (C) 2009-2020 Free Software Foundation, Inc.
20135e4c NC	3
20135e4c NC	4	Copied from elf32-fr30.c which is..
b3adc24a	5	Copyright (C) 1998-2020 Free Software Foundation, Inc.
20135e4c NC	6
	7	This file is part of BFD, the Binary File Descriptor library.
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 3 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
	21	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	22	MA 02110-1301, USA. */
	23
	24	#include "sysdep.h"
	25	#include "bfd.h"
	26	#include "libbfd.h"
	27	#include "elf-bfd.h"
	28	#include "elf/moxie.h"
	29
	30	/* Forward declarations. */
	31
	32	static reloc_howto_type moxie_elf_howto_table [] =
	33	{
	34	/* This reloc does nothing. */
	35	HOWTO (R_MOXIE_NONE, /* type */
	36	0, /* rightshift */
6346d5ca AM	37	3, /* size (0 = byte, 1 = short, 2 = long) */
6346d5ca AM	38	0, /* bitsize */
20135e4c NC	39	FALSE, /* pc_relative */
20135e4c NC	40	0, /* bitpos */
6346d5ca	41	complain_overflow_dont, /* complain_on_overflow */
20135e4c NC	42	bfd_elf_generic_reloc, /* special_function */
	43	"R_MOXIE_NONE", /* name */
	44	FALSE, /* partial_inplace */
	45	0, /* src_mask */
	46	0, /* dst_mask */
	47	FALSE), /* pcrel_offset */
	48
	49	/* A 32 bit absolute relocation. */
	50	HOWTO (R_MOXIE_32, /* type */
	51	0, /* rightshift */
	52	2, /* size (0 = byte, 1 = short, 2 = long) */
	53	32, /* bitsize */
	54	FALSE, /* pc_relative */
	55	0, /* bitpos */
	56	complain_overflow_bitfield, /* complain_on_overflow */
	57	bfd_elf_generic_reloc, /* special_function */
	58	"R_MOXIE_32", /* name */
	59	FALSE, /* partial_inplace */
	60	0x00000000, /* src_mask */
	61	0xffffffff, /* dst_mask */
	62	FALSE), /* pcrel_offset */
f865a31d AG	63
	64	/* A 10 bit PC-relative relocation. */
	65	HOWTO (R_MOXIE_PCREL10, /* type. */
	66	1, /* rightshift. */
	67	1, /* size (0 = byte, 1 = short, 2 = long). */
	68	10, /* bitsize. */
	69	TRUE, /* pc_relative. */
	70	0, /* bitpos. */
	71	complain_overflow_signed, /* complain_on_overflow. */
	72	bfd_elf_generic_reloc, /* special_function. */
	73	"R_MOXIE_PCREL10", /* name. */
	74	FALSE, /* partial_inplace. */
	75	0, /* src_mask. */
	76	0x000003FF, /* dst_mask. */
	77	TRUE), /* pcrel_offset. */
20135e4c NC	78	};
	79	\f
	80	/* Map BFD reloc types to MOXIE ELF reloc types. */
	81
	82	struct moxie_reloc_map
	83	{
	84	bfd_reloc_code_real_type bfd_reloc_val;
	85	unsigned int moxie_reloc_val;
	86	};
	87
	88	static const struct moxie_reloc_map moxie_reloc_map [] =
	89	{
07d6d2b8 AM	90	{ BFD_RELOC_NONE, R_MOXIE_NONE },
07d6d2b8 AM	91	{ BFD_RELOC_32, R_MOXIE_32 },
f865a31d	92	{ BFD_RELOC_MOXIE_10_PCREL, R_MOXIE_PCREL10 },
20135e4c NC	93	};
	94
	95	static reloc_howto_type *
	96	moxie_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
	97	bfd_reloc_code_real_type code)
	98	{
	99	unsigned int i;
	100
	101	for (i = sizeof (moxie_reloc_map) / sizeof (moxie_reloc_map[0]);
0ba38529	102	i--;)
20135e4c NC	103	if (moxie_reloc_map [i].bfd_reloc_val == code)
	104	return & moxie_elf_howto_table [moxie_reloc_map[i].moxie_reloc_val];
	105
	106	return NULL;
	107	}
	108
	109	static reloc_howto_type *
	110	moxie_reloc_name_lookup (bfd abfd ATTRIBUTE_UNUSED, const char r_name)
	111	{
	112	unsigned int i;
	113
	114	for (i = 0;
	115	i < sizeof (moxie_elf_howto_table) / sizeof (moxie_elf_howto_table[0]);
	116	i++)
	117	if (moxie_elf_howto_table[i].name != NULL
	118	&& strcasecmp (moxie_elf_howto_table[i].name, r_name) == 0)
	119	return &moxie_elf_howto_table[i];
	120
	121	return NULL;
	122	}
	123
	124	/* Set the howto pointer for an MOXIE ELF reloc. */
	125
f3185997	126	static bfd_boolean
0aa13fee	127	moxie_info_to_howto_rela (bfd *abfd,
20135e4c NC	128	arelent *cache_ptr,
	129	Elf_Internal_Rela *dst)
	130	{
	131	unsigned int r_type;
	132
	133	r_type = ELF32_R_TYPE (dst->r_info);
5860e3f8 NC	134	if (r_type >= (unsigned int) R_MOXIE_max)
5860e3f8 NC	135	{
695344c0	136	/* xgettext:c-format */
0aa13fee AM	137	_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
0aa13fee AM	138	abfd, r_type);
f3185997 NC	139	bfd_set_error (bfd_error_bad_value);
f3185997 NC	140	return FALSE;
5860e3f8	141	}
20135e4c	142	cache_ptr->howto = & moxie_elf_howto_table [r_type];
f3185997	143	return TRUE;
20135e4c NC	144	}
	145	\f
	146	/* Perform a single relocation. By default we use the standard BFD
	147	routines, but a few relocs, we have to do them ourselves. */
	148
	149	static bfd_reloc_status_type
	150	moxie_final_link_relocate (reloc_howto_type *howto,
	151	bfd *input_bfd,
	152	asection *input_section,
	153	bfd_byte *contents,
	154	Elf_Internal_Rela *rel,
	155	bfd_vma relocation)
	156	{
	157	bfd_reloc_status_type r = bfd_reloc_ok;
	158
	159	switch (howto->type)
	160	{
	161	default:
	162	r = _bfd_final_link_relocate (howto, input_bfd, input_section,
	163	contents, rel->r_offset,
	164	relocation, rel->r_addend);
	165	}
	166
	167	return r;
	168	}
	169	\f
	170	/* Relocate an MOXIE ELF section.
	171
	172	The RELOCATE_SECTION function is called by the new ELF backend linker
	173	to handle the relocations for a section.
	174
	175	The relocs are always passed as Rela structures; if the section
	176	actually uses Rel structures, the r_addend field will always be
	177	zero.
	178
	179	This function is responsible for adjusting the section contents as
	180	necessary, and (if using Rela relocs and generating a relocatable
	181	output file) adjusting the reloc addend as necessary.
	182
	183	This function does not have to worry about setting the reloc
	184	address or the reloc symbol index.
	185
	186	LOCAL_SYMS is a pointer to the swapped in local symbols.
	187
	188	LOCAL_SECTIONS is an array giving the section in the input file
	189	corresponding to the st_shndx field of each local symbol.
	190
	191	The global hash table entry for the global symbols can be found
	192	via elf_sym_hashes (input_bfd).
	193
	194	When generating relocatable output, this function must handle
	195	STB_LOCAL/STT_SECTION symbols specially. The output symbol is
	196	going to be the section symbol corresponding to the output
	197	section, which means that the addend must be adjusted
	198	accordingly. */
	199
	200	static bfd_boolean
	201	moxie_elf_relocate_section (bfd *output_bfd,
	202	struct bfd_link_info *info,
	203	bfd *input_bfd,
	204	asection *input_section,
	205	bfd_byte *contents,
	206	Elf_Internal_Rela *relocs,
	207	Elf_Internal_Sym *local_syms,
208	asection **local_sections)
209	{
210	Elf_Internal_Shdr *symtab_hdr;
211	struct elf_link_hash_entry **sym_hashes;
212	Elf_Internal_Rela *rel;
213	Elf_Internal_Rela *relend;
214
215	symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
216	sym_hashes = elf_sym_hashes (input_bfd);
217	relend = relocs + input_section->reloc_count;
218
219	for (rel = relocs; rel < relend; rel ++)
220	{
221	reloc_howto_type *howto;
222	unsigned long r_symndx;
223	Elf_Internal_Sym *sym;
224	asection *sec;
225	struct elf_link_hash_entry *h;
226	bfd_vma relocation;
227	bfd_reloc_status_type r;
228	const char *name;
229	int r_type;
230
231	r_type = ELF32_R_TYPE (rel->r_info);
20135e4c	232	r_symndx = ELF32_R_SYM (rel->r_info);
c7e2358a	233	howto = moxie_elf_howto_table + r_type;
20135e4c NC	234	h = NULL;
	235	sym = NULL;
	236	sec = NULL;
	237
	238	if (r_symndx < symtab_hdr->sh_info)
	239	{
	240	sym = local_syms + r_symndx;
	241	sec = local_sections [r_symndx];
	242	relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
	243
	244	name = bfd_elf_string_from_elf_section
	245	(input_bfd, symtab_hdr->sh_link, sym->st_name);
fd361982	246	name = name == NULL ? bfd_section_name (sec) : name;
20135e4c NC	247	}
	248	else
	249	{
62d887d4	250	bfd_boolean unresolved_reloc, warned, ignored;
20135e4c NC	251
	252	RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
	253	r_symndx, symtab_hdr, sym_hashes,
	254	h, sec, relocation,
62d887d4	255	unresolved_reloc, warned, ignored);
20135e4c NC	256
	257	name = h->root.root.string;
	258	}
	259
dbaa2011	260	if (sec != NULL && discarded_section (sec))
e4067dbb	261	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b	262	rel, 1, relend, howto, 0, contents);
20135e4c	263
0e1862bb	264	if (bfd_link_relocatable (info))
20135e4c NC	265	continue;
	266
	267	r = moxie_final_link_relocate (howto, input_bfd, input_section,
	268	contents, rel, relocation);
	269
	270	if (r != bfd_reloc_ok)
	271	{
	272	const char * msg = NULL;
	273
	274	switch (r)
	275	{
	276	case bfd_reloc_overflow:
1a72702b	277	(*info->callbacks->reloc_overflow)
20135e4c NC	278	(info, (h ? &h->root : NULL), name, howto->name,
	279	(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
	280	break;
	281
	282	case bfd_reloc_undefined:
1a72702b AM	283	(*info->callbacks->undefined_symbol)
1a72702b AM	284	(info, name, input_bfd, input_section, rel->r_offset, TRUE);
20135e4c NC	285	break;
	286
	287	case bfd_reloc_outofrange:
	288	msg = _("internal error: out of range error");
	289	break;
	290
	291	case bfd_reloc_notsupported:
	292	msg = _("internal error: unsupported relocation error");
	293	break;
	294
	295	case bfd_reloc_dangerous:
	296	msg = _("internal error: dangerous relocation");
	297	break;
	298
	299	default:
	300	msg = _("internal error: unknown error");
	301	break;
	302	}
	303
	304	if (msg)
1a72702b AM	305	(*info->callbacks->warning) (info, msg, name, input_bfd,
1a72702b AM	306	input_section, rel->r_offset);
20135e4c NC	307	}
	308	}
	309
	310	return TRUE;
	311	}
	312	\f
	313	/* Return the section that should be marked against GC for a given
	314	relocation. */
	315
	316	static asection *
	317	moxie_elf_gc_mark_hook (asection *sec,
	318	struct bfd_link_info *info,
	319	Elf_Internal_Rela *rel,
	320	struct elf_link_hash_entry *h,
	321	Elf_Internal_Sym *sym)
	322	{
	323	return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
	324	}
	325
	326	/* Look through the relocs for a section during the first phase.
	327	Since we don't do .gots or .plts, we just need to consider the
	328	virtual table relocs for gc. */
	329
	330	static bfd_boolean
	331	moxie_elf_check_relocs (bfd *abfd,
	332	struct bfd_link_info *info,
	333	asection *sec,
	334	const Elf_Internal_Rela *relocs)
	335	{
	336	Elf_Internal_Shdr *symtab_hdr;
	337	struct elf_link_hash_entry **sym_hashes;
	338	const Elf_Internal_Rela *rel;
	339	const Elf_Internal_Rela *rel_end;
	340
0e1862bb	341	if (bfd_link_relocatable (info))
20135e4c NC	342	return TRUE;
	343
	344	symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
	345	sym_hashes = elf_sym_hashes (abfd);
	346
	347	rel_end = relocs + sec->reloc_count;
	348	for (rel = relocs; rel < rel_end; rel++)
	349	{
	350	struct elf_link_hash_entry *h;
	351	unsigned long r_symndx;
	352
	353	r_symndx = ELF32_R_SYM (rel->r_info);
	354	if (r_symndx < symtab_hdr->sh_info)
07d6d2b8	355	h = NULL;
20135e4c NC	356	else
	357	{
	358	h = sym_hashes[r_symndx - symtab_hdr->sh_info];
	359	while (h->root.type == bfd_link_hash_indirect
	360	\|\| h->root.type == bfd_link_hash_warning)
	361	h = (struct elf_link_hash_entry *) h->root.u.i.link;
	362	}
	363	}
	364
	365	return TRUE;
	366	}
	367	\f
	368	#define ELF_ARCH bfd_arch_moxie
	369	#define ELF_MACHINE_CODE EM_MOXIE
07d6d2b8	370	#define ELF_MACHINE_ALT1 EM_MOXIE_OLD
20135e4c NC	371	#define ELF_MAXPAGESIZE 0x1
20135e4c NC	372
07d6d2b8	373	#define TARGET_BIG_SYM moxie_elf32_be_vec
e202fa84	374	#define TARGET_BIG_NAME "elf32-bigmoxie"
07d6d2b8	375	#define TARGET_LITTLE_SYM moxie_elf32_le_vec
e202fa84	376	#define TARGET_LITTLE_NAME "elf32-littlemoxie"
20135e4c NC	377
	378	#define elf_info_to_howto_rel NULL
	379	#define elf_info_to_howto moxie_info_to_howto_rela
	380	#define elf_backend_relocate_section moxie_elf_relocate_section
	381	#define elf_backend_gc_mark_hook moxie_elf_gc_mark_hook
07d6d2b8	382	#define elf_backend_check_relocs moxie_elf_check_relocs
20135e4c NC	383
	384	#define elf_backend_can_gc_sections 1
	385	#define elf_backend_rela_normal 1
	386
	387	#define bfd_elf32_bfd_reloc_type_lookup moxie_reloc_type_lookup
	388	#define bfd_elf32_bfd_reloc_name_lookup moxie_reloc_name_lookup
	389
	390	#include "elf32-target.h"