[deliverable/binutils-gdb.git] / bfd / elf32-d30v.c

/* D30V-specific support for 32-bit ELF
   Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
   Free Software Foundation, Inc.
   Contributed by Martin Hunt (hunt@cygnus.com).

   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 2 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/d30v.h"

#define MAX32 ((bfd_signed_vma) 0x7fffffff)
#define MIN32 (- MAX32 - 1)

static bfd_reloc_status_type
bfd_elf_d30v_reloc (bfd *abfd,
		    arelent *reloc_entry,
		    asymbol *symbol,
		    void * data,
		    asection *input_section,
		    bfd *output_bfd,
		    char **error_message)
{
  bfd_signed_vma relocation;
  bfd_vma in1, in2, num;
  bfd_vma tmp_addr = 0;
  bfd_reloc_status_type r;
  asection *reloc_target_output_section;
  bfd_size_type addr = reloc_entry->address;
  bfd_reloc_status_type flag = bfd_reloc_ok;
  bfd_vma output_base = 0;
  reloc_howto_type *howto = reloc_entry->howto;
  int make_absolute = 0;

  if (output_bfd != NULL)
    {
      /* Partial linking -- do nothing.  */
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
                             input_section, output_bfd, error_message);
  if (r != bfd_reloc_continue)
    return r;

  /* A hacked-up version of bfd_perform_reloc() follows.  */
 if (bfd_is_und_section (symbol->section)
      && (symbol->flags & BSF_WEAK) == 0
      && output_bfd == NULL)
    flag = bfd_reloc_undefined;

  /* Is the address of the relocation really within the section?  */
  if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    return bfd_reloc_outofrange;

  /* Work out which section the relocation is targeted at and the
     initial relocation command value.  */

  /* Get symbol value.  (Common symbols are special.)  */
  if (bfd_is_com_section (symbol->section))
    relocation = 0;
  else
    relocation = symbol->value;

  reloc_target_output_section = symbol->section->output_section;

  /* Convert input-section-relative symbol value to absolute.  */
  output_base = reloc_target_output_section->vma;
  relocation += output_base + symbol->section->output_offset;

  /* Add in supplied addend.  */
  relocation += reloc_entry->addend;

  /* Here the variable relocation holds the final address of the
     symbol we are relocating against, plus any addend.  */
  if (howto->pc_relative)
    {
      tmp_addr = input_section->output_section->vma
	+ input_section->output_offset
	+ reloc_entry->address;
      relocation -= tmp_addr;
    }

  in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
  in2 = bfd_get_32 (abfd, (bfd_byte *) data + addr + 4);

  /* Extract the addend.  */
  num = ((in2 & 0x3FFFF)
	 | ((in2 & 0xFF00000) >> 2)
	 | ((in1 & 0x3F) << 26));
  in1 &= 0xFFFFFFC0;
  in2 = 0x80000000;

  relocation += num;

  if (howto->pc_relative && howto->bitsize == 32)
    {
      /* The D30V has a PC that doesn't wrap and PC-relative jumps are
	 signed, so a PC-relative jump can't be more than +/- 2^31 bytes.
	 If one exceeds this, change it to an absolute jump.  */
      if (relocation > MAX32 || relocation < MIN32)
	{
	  relocation = (relocation + tmp_addr) & 0xffffffff;
	  make_absolute = 1;
	}
    }

  in1 |= (relocation >> 26) & 0x3F;		/* Top 6 bits.  */
  in2 |= ((relocation & 0x03FC0000) << 2);  	/* Next 8 bits.  */
  in2 |= relocation & 0x0003FFFF;		/* Bottom 18 bits.  */

  /* Change a PC-relative instruction to its
     absolute equivalent with this simple hack.  */
  if (make_absolute)
    in1 |= 0x00100000;

  bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
  bfd_put_32 (abfd, in2, (bfd_byte *) data + addr + 4);

  return flag;
}

static bfd_reloc_status_type
bfd_elf_d30v_reloc_21 (bfd *abfd,
		       arelent *reloc_entry,
		       asymbol *symbol,
		       void * data,
		       asection *input_section,
		       bfd *output_bfd,
		       char **error_message)
{
  bfd_vma relocation;
  bfd_vma in1, num;
  bfd_reloc_status_type r;
  asection *reloc_target_output_section;
  bfd_size_type addr = reloc_entry->address;
  bfd_reloc_status_type flag = bfd_reloc_ok;
  bfd_vma output_base = 0;
  reloc_howto_type *howto = reloc_entry->howto;
  int mask, max;

  if (output_bfd != NULL)
    {
      /* Partial linking -- do nothing.  */
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
                             input_section, output_bfd, error_message);
  if (r != bfd_reloc_continue)
    return r;

  /* A hacked-up version of bfd_perform_reloc() follows.  */
  if (bfd_is_und_section (symbol->section)
      && (symbol->flags & BSF_WEAK) == 0
      && output_bfd == NULL)
    flag = bfd_reloc_undefined;

  /* Is the address of the relocation really within the section?  */
  if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    return bfd_reloc_outofrange;

  /* Work out which section the relocation is targeted at and the
     initial relocation command value.  */

  /* Get symbol value.  (Common symbols are special.)  */
  if (bfd_is_com_section (symbol->section))
    relocation = 0;
  else
    relocation = symbol->value;

  reloc_target_output_section = symbol->section->output_section;

  /* Convert input-section-relative symbol value to absolute.  */
  output_base = reloc_target_output_section->vma;
  relocation += output_base + symbol->section->output_offset;

  /* Add in supplied addend.  */
  relocation += reloc_entry->addend;

  /* Here the variable relocation holds the final address of the
     symbol we are relocating against, plus any addend.  */

  if (howto->pc_relative)
    {
      relocation -= (input_section->output_section->vma
		     + input_section->output_offset);
      if (howto->pcrel_offset)
	relocation -= reloc_entry->address;
    }

  in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);

  mask =  (1 << howto->bitsize) - 1;
  if (howto->bitsize == 6)
    mask <<= 12;
  max = (1 << (howto->bitsize + 2)) - 1;

  /* Extract the addend.  */
  num = in1 & mask;  /* 18 bits.  */
  if (howto->bitsize == 6)
    num >>= 12;
  num <<= 3; /* shift left 3.  */
  in1 &= ~mask;  /* Mask out addend.  */

  relocation += num;
  if (howto->type == R_D30V_21_PCREL_R
      || howto->type == R_D30V_15_PCREL_R
      || howto->type == R_D30V_9_PCREL_R)
    relocation += 4;

  if ((int) relocation < 0)
    {
      if (~ (int) relocation > max)
	flag = bfd_reloc_overflow;
    }
  else
    {
      if ((int) relocation > max)
	flag = bfd_reloc_overflow;
    }

  relocation >>= 3;
  if (howto->bitsize == 6)
    in1 |= ((relocation & (mask >> 12)) << 12);
  else
    in1 |= relocation & mask;

  bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);

  return flag;
}

static reloc_howto_type elf_d30v_howto_table[] =
{
  /* This reloc does nothing.  */
  HOWTO (R_D30V_NONE,		/* 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_D30V_NONE",		/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0,			/* Src_mask.  */
	 0,			/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

  /* A 6 bit absolute relocation.  */
  HOWTO (R_D30V_6,		/* Type.  */
	 0,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 6,			/* Bitsize.  */
	 FALSE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_bitfield, /* Complain_on_overflow.  */
	 bfd_elf_generic_reloc,	/* Special_function.  */
	 "R_D30V_6",		/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3f,			/* Src_mask.  */
	 0x3f,			/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

  /* A relative 9 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_9_PCREL,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 6,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_9_PCREL",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3f,			/* Src_mask.  */
	 0x3f,			/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* A relative 9 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_9_PCREL_R,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 6,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_9_PCREL_R",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3f,			/* Src_mask.  */
	 0x3f,			/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* An absolute 15 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_15,		/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 12,			/* Bitsize.  */
	 FALSE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_generic_reloc,	/* Special_function.  */
	 "R_D30V_15",		/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xfff,			/* Src_mask.  */
	 0xfff,			/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

  /* A relative 15 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_15_PCREL,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 12,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_15_PCREL",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xfff,			/* Src_mask.  */
	 0xfff,			/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* A relative 15 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_15_PCREL_R,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 12,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_15_PCREL_R",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xfff,			/* Src_mask.  */
	 0xfff,			/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* An absolute 21 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_21,		/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 18,			/* Bitsize.  */
	 FALSE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_generic_reloc,	/* Special_function.  */
	 "R_D30V_21",		/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3ffff,		/* Src_mask.  */
	 0x3ffff,		/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

  /* A relative 21 bit relocation, right shifted by 3.  */
  HOWTO (R_D30V_21_PCREL,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 18,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_21_PCREL",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3ffff,		/* Src_mask.  */
	 0x3ffff,		/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* A relative 21 bit relocation, right shifted by 3, in the Right container.  */
  HOWTO (R_D30V_21_PCREL_R,	/* Type.  */
	 3,			/* Rightshift.  */
	 2,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 18,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc_21,	/* Special_function.  */
	 "R_D30V_21_PCREL_R",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0x3ffff,		/* Src_mask.  */
	 0x3ffff,		/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* A D30V 32 bit absolute relocation.  */
  HOWTO (R_D30V_32,		/* Type.  */
	 0,			/* Rightshift.  */
	 4,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 32,			/* Bitsize.  */
	 FALSE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_bitfield, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc,	/* Special_function.  */
	 "R_D30V_32",		/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xffffffff,		/* Src_mask.  */
	 0xffffffff,		/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

  /* A relative 32 bit relocation.  */
  HOWTO (R_D30V_32_PCREL,	/* Type.  */
	 0,			/* Rightshift.  */
	 4,			/* Size (0 = byte, 1 = short, 2 = long).  */
	 32,			/* Bitsize.  */
	 TRUE,			/* PC_relative.  */
	 0,			/* Bitpos.  */
	 complain_overflow_signed, /* Complain_on_overflow.  */
	 bfd_elf_d30v_reloc,	/* Special_function.  */
	 "R_D30V_32_PCREL",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xffffffff,		/* Src_mask.  */
	 0xffffffff,		/* Dst_mask.  */
	 TRUE),			/* PCrel_offset.  */

  /* A regular 32 bit absolute relocation.  */
  HOWTO (R_D30V_32_NORMAL,	/* 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_D30V_32_NORMAL",	/* Name.  */
	 FALSE,			/* Partial_inplace.  */
	 0xffffffff,		/* Src_mask.  */
	 0xffffffff,		/* Dst_mask.  */
	 FALSE),		/* PCrel_offset.  */

};

/* Map BFD reloc types to D30V ELF reloc types.  */

struct d30v_reloc_map
{
  bfd_reloc_code_real_type bfd_reloc_val;
  unsigned char elf_reloc_val;
};

static const struct d30v_reloc_map d30v_reloc_map[] =
{
  { BFD_RELOC_NONE, R_D30V_NONE, },
  { BFD_RELOC_D30V_6, R_D30V_6 },
  { BFD_RELOC_D30V_9_PCREL, R_D30V_9_PCREL },
  { BFD_RELOC_D30V_9_PCREL_R, R_D30V_9_PCREL_R },
  { BFD_RELOC_D30V_15, R_D30V_15 },
  { BFD_RELOC_D30V_15_PCREL, R_D30V_15_PCREL },
  { BFD_RELOC_D30V_15_PCREL_R, R_D30V_15_PCREL_R },
  { BFD_RELOC_D30V_21, R_D30V_21 },
  { BFD_RELOC_D30V_21_PCREL, R_D30V_21_PCREL },
  { BFD_RELOC_D30V_21_PCREL_R, R_D30V_21_PCREL_R },
  { BFD_RELOC_D30V_32, R_D30V_32 },
  { BFD_RELOC_D30V_32_PCREL, R_D30V_32_PCREL },
  { BFD_RELOC_32, R_D30V_32_NORMAL },
};

static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
				 bfd_reloc_code_real_type code)
{
  unsigned int i;

  for (i = 0;
       i < sizeof (d30v_reloc_map) / sizeof (struct d30v_reloc_map);
       i++)
    {
      if (d30v_reloc_map[i].bfd_reloc_val == code)
	return &elf_d30v_howto_table[d30v_reloc_map[i].elf_reloc_val];
    }

  return NULL;
}

static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
				 const char *r_name)
{
  unsigned int i;

  for (i = 0;
       i < sizeof (elf_d30v_howto_table) / sizeof (elf_d30v_howto_table[0]);
       i++)
    if (elf_d30v_howto_table[i].name != NULL
	&& strcasecmp (elf_d30v_howto_table[i].name, r_name) == 0)
      return &elf_d30v_howto_table[i];

  return NULL;
}

/* Set the howto pointer for an D30V ELF reloc (type REL).  */

static void
d30v_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
			arelent *cache_ptr,
			Elf_Internal_Rela *dst)
{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
  cache_ptr->howto = &elf_d30v_howto_table[r_type];
}

/* Set the howto pointer for an D30V ELF reloc (type RELA).  */

static void
d30v_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);
  BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
  cache_ptr->howto = &elf_d30v_howto_table[r_type];
}

#define ELF_ARCH		bfd_arch_d30v
#define ELF_MACHINE_CODE	EM_D30V
#define ELF_MACHINE_ALT1	EM_CYGNUS_D30V
#define ELF_MAXPAGESIZE		0x1000

#define TARGET_BIG_SYM          bfd_elf32_d30v_vec
#define TARGET_BIG_NAME		"elf32-d30v"

#define elf_info_to_howto	d30v_info_to_howto_rela
#define elf_info_to_howto_rel	d30v_info_to_howto_rel
#define elf_backend_object_p	0
#define elf_backend_final_write_processing	0

#include "elf32-target.h"
Commit	Line	Data
252b5132	1	/* D30V-specific support for 32-bit ELF
157090f7	2	Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
82e51918	3	Free Software Foundation, Inc.
252b5132 RH	4	Contributed by Martin Hunt (hunt@cygnus.com).
252b5132 RH	5
47b0e7ad	6	This file is part of BFD, the Binary File Descriptor library.
252b5132	7
47b0e7ad NC	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
252b5132	12
47b0e7ad NC	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
252b5132	17
47b0e7ad NC	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	21	MA 02110-1301, USA. */
252b5132	22
252b5132	23	#include "sysdep.h"
3db64b00	24	#include "bfd.h"
252b5132 RH	25	#include "libbfd.h"
252b5132 RH	26	#include "elf-bfd.h"
1b452ec6	27	#include "elf/d30v.h"
252b5132	28
fc633e5b AM	29	#define MAX32 ((bfd_signed_vma) 0x7fffffff)
fc633e5b AM	30	#define MIN32 (- MAX32 - 1)
252b5132 RH	31
252b5132 RH	32	static bfd_reloc_status_type
47b0e7ad NC	33	bfd_elf_d30v_reloc (bfd *abfd,
	34	arelent *reloc_entry,
	35	asymbol *symbol,
	36	void * data,
	37	asection *input_section,
	38	bfd *output_bfd,
	39	char **error_message)
252b5132	40	{
fc633e5b	41	bfd_signed_vma relocation;
252b5132 RH	42	bfd_vma in1, in2, num;
	43	bfd_vma tmp_addr = 0;
	44	bfd_reloc_status_type r;
	45	asection *reloc_target_output_section;
	46	bfd_size_type addr = reloc_entry->address;
	47	bfd_reloc_status_type flag = bfd_reloc_ok;
	48	bfd_vma output_base = 0;
	49	reloc_howto_type *howto = reloc_entry->howto;
	50	int make_absolute = 0;
	51
47b0e7ad	52	if (output_bfd != NULL)
b51a1338 RH	53	{
	54	/* Partial linking -- do nothing. */
	55	reloc_entry->address += input_section->output_offset;
	56	return bfd_reloc_ok;
	57	}
	58
252b5132 RH	59	r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
	60	input_section, output_bfd, error_message);
	61	if (r != bfd_reloc_continue)
a7c10850	62	return r;
252b5132	63
47b0e7ad	64	/* A hacked-up version of bfd_perform_reloc() follows. */
252b5132 RH	65	if (bfd_is_und_section (symbol->section)
252b5132 RH	66	&& (symbol->flags & BSF_WEAK) == 0
47b0e7ad	67	&& output_bfd == NULL)
252b5132 RH	68	flag = bfd_reloc_undefined;
	69
	70	/* Is the address of the relocation really within the section? */
07515404	71	if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
252b5132 RH	72	return bfd_reloc_outofrange;
252b5132 RH	73
4cc11e76	74	/* Work out which section the relocation is targeted at and the
252b5132 RH	75	initial relocation command value. */
	76
	77	/* Get symbol value. (Common symbols are special.) */
	78	if (bfd_is_com_section (symbol->section))
	79	relocation = 0;
	80	else
	81	relocation = symbol->value;
	82
	83	reloc_target_output_section = symbol->section->output_section;
	84
	85	/* Convert input-section-relative symbol value to absolute. */
b51a1338	86	output_base = reloc_target_output_section->vma;
252b5132 RH	87	relocation += output_base + symbol->section->output_offset;
	88
	89	/* Add in supplied addend. */
	90	relocation += reloc_entry->addend;
	91
	92	/* Here the variable relocation holds the final address of the
	93	symbol we are relocating against, plus any addend. */
82e51918	94	if (howto->pc_relative)
252b5132	95	{
47b0e7ad NC	96	tmp_addr = input_section->output_section->vma
47b0e7ad NC	97	+ input_section->output_offset
252b5132 RH	98	+ reloc_entry->address;
	99	relocation -= tmp_addr;
	100	}
a7c10850	101
252b5132 RH	102	in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
	103	in2 = bfd_get_32 (abfd, (bfd_byte *) data + addr + 4);
	104
47b0e7ad	105	/* Extract the addend. */
252b5132 RH	106	num = ((in2 & 0x3FFFF)
	107	\| ((in2 & 0xFF00000) >> 2)
	108	\| ((in1 & 0x3F) << 26));
	109	in1 &= 0xFFFFFFC0;
	110	in2 = 0x80000000;
a7c10850	111
252b5132 RH	112	relocation += num;
252b5132 RH	113
82e51918	114	if (howto->pc_relative && howto->bitsize == 32)
252b5132	115	{
fc633e5b AM	116	/* The D30V has a PC that doesn't wrap and PC-relative jumps are
	117	signed, so a PC-relative jump can't be more than +/- 2^31 bytes.
	118	If one exceeds this, change it to an absolute jump. */
	119	if (relocation > MAX32 \|\| relocation < MIN32)
252b5132 RH	120	{
	121	relocation = (relocation + tmp_addr) & 0xffffffff;
	122	make_absolute = 1;
	123	}
	124	}
a7c10850	125
47b0e7ad NC	126	in1 \|= (relocation >> 26) & 0x3F; /* Top 6 bits. */
	127	in2 \|= ((relocation & 0x03FC0000) << 2); /* Next 8 bits. */
	128	in2 \|= relocation & 0x0003FFFF; /* Bottom 18 bits. */
a7c10850	129
47b0e7ad NC	130	/* Change a PC-relative instruction to its
47b0e7ad NC	131	absolute equivalent with this simple hack. */
252b5132 RH	132	if (make_absolute)
	133	in1 \|= 0x00100000;
	134
	135	bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
	136	bfd_put_32 (abfd, in2, (bfd_byte *) data + addr + 4);
252b5132	137
a7c10850 KH	138	return flag;
a7c10850 KH	139	}
252b5132 RH	140
252b5132 RH	141	static bfd_reloc_status_type
47b0e7ad NC	142	bfd_elf_d30v_reloc_21 (bfd *abfd,
	143	arelent *reloc_entry,
	144	asymbol *symbol,
	145	void * data,
	146	asection *input_section,
	147	bfd *output_bfd,
	148	char **error_message)
252b5132 RH	149	{
	150	bfd_vma relocation;
	151	bfd_vma in1, num;
	152	bfd_reloc_status_type r;
	153	asection *reloc_target_output_section;
	154	bfd_size_type addr = reloc_entry->address;
	155	bfd_reloc_status_type flag = bfd_reloc_ok;
	156	bfd_vma output_base = 0;
	157	reloc_howto_type *howto = reloc_entry->howto;
	158	int mask, max;
	159
47b0e7ad	160	if (output_bfd != NULL)
b51a1338 RH	161	{
	162	/* Partial linking -- do nothing. */
	163	reloc_entry->address += input_section->output_offset;
	164	return bfd_reloc_ok;
	165	}
a7c10850	166
252b5132 RH	167	r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
	168	input_section, output_bfd, error_message);
	169	if (r != bfd_reloc_continue)
a7c10850	170	return r;
252b5132	171
47b0e7ad NC	172	/* A hacked-up version of bfd_perform_reloc() follows. */
47b0e7ad NC	173	if (bfd_is_und_section (symbol->section)
252b5132	174	&& (symbol->flags & BSF_WEAK) == 0
47b0e7ad	175	&& output_bfd == NULL)
252b5132 RH	176	flag = bfd_reloc_undefined;
	177
	178	/* Is the address of the relocation really within the section? */
07515404	179	if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
252b5132 RH	180	return bfd_reloc_outofrange;
252b5132 RH	181
4cc11e76	182	/* Work out which section the relocation is targeted at and the
252b5132 RH	183	initial relocation command value. */
	184
	185	/* Get symbol value. (Common symbols are special.) */
	186	if (bfd_is_com_section (symbol->section))
	187	relocation = 0;
	188	else
	189	relocation = symbol->value;
	190
	191	reloc_target_output_section = symbol->section->output_section;
	192
	193	/* Convert input-section-relative symbol value to absolute. */
b51a1338	194	output_base = reloc_target_output_section->vma;
252b5132 RH	195	relocation += output_base + symbol->section->output_offset;
	196
	197	/* Add in supplied addend. */
	198	relocation += reloc_entry->addend;
	199
	200	/* Here the variable relocation holds the final address of the
	201	symbol we are relocating against, plus any addend. */
	202
82e51918	203	if (howto->pc_relative)
252b5132	204	{
b51a1338 RH	205	relocation -= (input_section->output_section->vma
b51a1338 RH	206	+ input_section->output_offset);
82e51918	207	if (howto->pcrel_offset)
252b5132 RH	208	relocation -= reloc_entry->address;
	209	}
	210
252b5132 RH	211	in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
	212
	213	mask = (1 << howto->bitsize) - 1;
	214	if (howto->bitsize == 6)
	215	mask <<= 12;
	216	max = (1 << (howto->bitsize + 2)) - 1;
	217
47b0e7ad NC	218	/* Extract the addend. */
47b0e7ad NC	219	num = in1 & mask; /* 18 bits. */
252b5132 RH	220	if (howto->bitsize == 6)
252b5132 RH	221	num >>= 12;
47b0e7ad NC	222	num <<= 3; /* shift left 3. */
47b0e7ad NC	223	in1 &= ~mask; /* Mask out addend. */
252b5132 RH	224
252b5132 RH	225	relocation += num;
47b0e7ad NC	226	if (howto->type == R_D30V_21_PCREL_R
	227	\|\| howto->type == R_D30V_15_PCREL_R
	228	\|\| howto->type == R_D30V_9_PCREL_R)
	229	relocation += 4;
252b5132	230
47b0e7ad	231	if ((int) relocation < 0)
252b5132	232	{
47b0e7ad	233	if (~ (int) relocation > max)
252b5132 RH	234	flag = bfd_reloc_overflow;
	235	}
	236	else
	237	{
47b0e7ad	238	if ((int) relocation > max)
252b5132 RH	239	flag = bfd_reloc_overflow;
252b5132 RH	240	}
47b0e7ad	241
a7c10850	242	relocation >>= 3;
252b5132 RH	243	if (howto->bitsize == 6)
	244	in1 \|= ((relocation & (mask >> 12)) << 12);
	245	else
	246	in1 \|= relocation & mask;
	247
	248	bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
a7c10850	249
252b5132	250	return flag;
a7c10850	251	}
252b5132	252
47b0e7ad NC	253	static reloc_howto_type elf_d30v_howto_table[] =
	254	{
	255	/* This reloc does nothing. */
	256	HOWTO (R_D30V_NONE, /* Type. */
	257	0, /* Rightshift. */
	258	2, /* Size (0 = byte, 1 = short, 2 = long). */
	259	32, /* Bitsize. */
	260	FALSE, /* PC_relative. */
	261	0, /* Bitpos. */
	262	complain_overflow_bitfield, /* Complain_on_overflow. */
	263	bfd_elf_generic_reloc, /* Special_function. */
	264	"R_D30V_NONE", /* Name. */
	265	FALSE, /* Partial_inplace. */
	266	0, /* Src_mask. */
	267	0, /* Dst_mask. */
	268	FALSE), /* PCrel_offset. */
	269
	270	/* A 6 bit absolute relocation. */
	271	HOWTO (R_D30V_6, /* Type. */
	272	0, /* Rightshift. */
	273	2, /* Size (0 = byte, 1 = short, 2 = long). */
	274	6, /* Bitsize. */
	275	FALSE, /* PC_relative. */
	276	0, /* Bitpos. */
	277	complain_overflow_bitfield, /* Complain_on_overflow. */
	278	bfd_elf_generic_reloc, /* Special_function. */
	279	"R_D30V_6", /* Name. */
	280	FALSE, /* Partial_inplace. */
	281	0x3f, /* Src_mask. */
	282	0x3f, /* Dst_mask. */
	283	FALSE), /* PCrel_offset. */
	284
	285	/* A relative 9 bit relocation, right shifted by 3. */
	286	HOWTO (R_D30V_9_PCREL, /* Type. */
	287	3, /* Rightshift. */
	288	2, /* Size (0 = byte, 1 = short, 2 = long). */
	289	6, /* Bitsize. */
	290	TRUE, /* PC_relative. */
	291	0, /* Bitpos. */
	292	complain_overflow_signed, /* Complain_on_overflow. */
	293	bfd_elf_d30v_reloc_21, /* Special_function. */
	294	"R_D30V_9_PCREL", /* Name. */
	295	FALSE, /* Partial_inplace. */
	296	0x3f, /* Src_mask. */
	297	0x3f, /* Dst_mask. */
	298	TRUE), /* PCrel_offset. */
	299
	300	/* A relative 9 bit relocation, right shifted by 3. */
	301	HOWTO (R_D30V_9_PCREL_R, /* Type. */
	302	3, /* Rightshift. */
	303	2, /* Size (0 = byte, 1 = short, 2 = long). */
	304	6, /* Bitsize. */
	305	TRUE, /* PC_relative. */
	306	0, /* Bitpos. */
	307	complain_overflow_signed, /* Complain_on_overflow. */
	308	bfd_elf_d30v_reloc_21, /* Special_function. */
	309	"R_D30V_9_PCREL_R", /* Name. */
	310	FALSE, /* Partial_inplace. */
	311	0x3f, /* Src_mask. */
	312	0x3f, /* Dst_mask. */
	313	TRUE), /* PCrel_offset. */
	314
	315	/* An absolute 15 bit relocation, right shifted by 3. */
	316	HOWTO (R_D30V_15, /* Type. */
317	3, /* Rightshift. */
318	2, /* Size (0 = byte, 1 = short, 2 = long). */
319	12, /* Bitsize. */
320	FALSE, /* PC_relative. */
321	0, /* Bitpos. */
322	complain_overflow_signed, /* Complain_on_overflow. */
323	bfd_elf_generic_reloc, /* Special_function. */
324	"R_D30V_15", /* Name. */
325	FALSE, /* Partial_inplace. */
326	0xfff, /* Src_mask. */
327	0xfff, /* Dst_mask. */
328	FALSE), /* PCrel_offset. */
329
330	/* A relative 15 bit relocation, right shifted by 3. */
331	HOWTO (R_D30V_15_PCREL, /* Type. */
332	3, /* Rightshift. */
333	2, /* Size (0 = byte, 1 = short, 2 = long). */
334	12, /* Bitsize. */
335	TRUE, /* PC_relative. */
336	0, /* Bitpos. */
337	complain_overflow_signed, /* Complain_on_overflow. */
338	bfd_elf_d30v_reloc_21, /* Special_function. */
339	"R_D30V_15_PCREL", /* Name. */
340	FALSE, /* Partial_inplace. */
341	0xfff, /* Src_mask. */
342	0xfff, /* Dst_mask. */
343	TRUE), /* PCrel_offset. */
344
345	/* A relative 15 bit relocation, right shifted by 3. */
346	HOWTO (R_D30V_15_PCREL_R, /* Type. */
347	3, /* Rightshift. */
348	2, /* Size (0 = byte, 1 = short, 2 = long). */
349	12, /* Bitsize. */
350	TRUE, /* PC_relative. */
351	0, /* Bitpos. */
352	complain_overflow_signed, /* Complain_on_overflow. */
353	bfd_elf_d30v_reloc_21, /* Special_function. */
354	"R_D30V_15_PCREL_R", /* Name. */
355	FALSE, /* Partial_inplace. */
356	0xfff, /* Src_mask. */
357	0xfff, /* Dst_mask. */
358	TRUE), /* PCrel_offset. */
359
360	/* An absolute 21 bit relocation, right shifted by 3. */
361	HOWTO (R_D30V_21, /* Type. */
362	3, /* Rightshift. */
363	2, /* Size (0 = byte, 1 = short, 2 = long). */
364	18, /* Bitsize. */
365	FALSE, /* PC_relative. */
366	0, /* Bitpos. */
367	complain_overflow_signed, /* Complain_on_overflow. */
368	bfd_elf_generic_reloc, /* Special_function. */
369	"R_D30V_21", /* Name. */
370	FALSE, /* Partial_inplace. */
371	0x3ffff, /* Src_mask. */
372	0x3ffff, /* Dst_mask. */
373	FALSE), /* PCrel_offset. */
374
375	/* A relative 21 bit relocation, right shifted by 3. */
376	HOWTO (R_D30V_21_PCREL, /* Type. */
377	3, /* Rightshift. */
378	2, /* Size (0 = byte, 1 = short, 2 = long). */
379	18, /* Bitsize. */
380	TRUE, /* PC_relative. */
381	0, /* Bitpos. */
382	complain_overflow_signed, /* Complain_on_overflow. */
383	bfd_elf_d30v_reloc_21, /* Special_function. */
384	"R_D30V_21_PCREL", /* Name. */
385	FALSE, /* Partial_inplace. */
386	0x3ffff, /* Src_mask. */
387	0x3ffff, /* Dst_mask. */
388	TRUE), /* PCrel_offset. */
389
390	/* A relative 21 bit relocation, right shifted by 3, in the Right container. */
391	HOWTO (R_D30V_21_PCREL_R, /* Type. */
392	3, /* Rightshift. */
393	2, /* Size (0 = byte, 1 = short, 2 = long). */
394	18, /* Bitsize. */
395	TRUE, /* PC_relative. */
396	0, /* Bitpos. */
397	complain_overflow_signed, /* Complain_on_overflow. */
398	bfd_elf_d30v_reloc_21, /* Special_function. */
399	"R_D30V_21_PCREL_R", /* Name. */
400	FALSE, /* Partial_inplace. */
401	0x3ffff, /* Src_mask. */
402	0x3ffff, /* Dst_mask. */
403	TRUE), /* PCrel_offset. */
404
405	/* A D30V 32 bit absolute relocation. */
406	HOWTO (R_D30V_32, /* Type. */
407	0, /* Rightshift. */
408	4, /* Size (0 = byte, 1 = short, 2 = long). */
409	32, /* Bitsize. */
410	FALSE, /* PC_relative. */
411	0, /* Bitpos. */
412	complain_overflow_bitfield, /* Complain_on_overflow. */
413	bfd_elf_d30v_reloc, /* Special_function. */
414	"R_D30V_32", /* Name. */
415	FALSE, /* Partial_inplace. */
416	0xffffffff, /* Src_mask. */
417	0xffffffff, /* Dst_mask. */
418	FALSE), /* PCrel_offset. */
419
420	/* A relative 32 bit relocation. */
421	HOWTO (R_D30V_32_PCREL, /* Type. */
422	0, /* Rightshift. */
423	4, /* Size (0 = byte, 1 = short, 2 = long). */
424	32, /* Bitsize. */
425	TRUE, /* PC_relative. */
426	0, /* Bitpos. */
427	complain_overflow_signed, /* Complain_on_overflow. */
428	bfd_elf_d30v_reloc, /* Special_function. */
429	"R_D30V_32_PCREL", /* Name. */
430	FALSE, /* Partial_inplace. */
431	0xffffffff, /* Src_mask. */
432	0xffffffff, /* Dst_mask. */
433	TRUE), /* PCrel_offset. */
434
435	/* A regular 32 bit absolute relocation. */
436	HOWTO (R_D30V_32_NORMAL, /* Type. */
437	0, /* Rightshift. */
438	2, /* Size (0 = byte, 1 = short, 2 = long). */
439	32, /* Bitsize. */
440	FALSE, /* PC_relative. */
441	0, /* Bitpos. */
442	complain_overflow_bitfield, /* Complain_on_overflow. */
443	bfd_elf_generic_reloc, /* Special_function. */
444	"R_D30V_32_NORMAL", /* Name. */
445	FALSE, /* Partial_inplace. */
446	0xffffffff, /* Src_mask. */
447	0xffffffff, /* Dst_mask. */
448	FALSE), /* PCrel_offset. */
449
450	};
451
252b5132 RH	452	/* Map BFD reloc types to D30V ELF reloc types. */
	453
	454	struct d30v_reloc_map
	455	{
	456	bfd_reloc_code_real_type bfd_reloc_val;
	457	unsigned char elf_reloc_val;
	458	};
	459
252b5132 RH	460	static const struct d30v_reloc_map d30v_reloc_map[] =
	461	{
	462	{ BFD_RELOC_NONE, R_D30V_NONE, },
	463	{ BFD_RELOC_D30V_6, R_D30V_6 },
	464	{ BFD_RELOC_D30V_9_PCREL, R_D30V_9_PCREL },
	465	{ BFD_RELOC_D30V_9_PCREL_R, R_D30V_9_PCREL_R },
	466	{ BFD_RELOC_D30V_15, R_D30V_15 },
	467	{ BFD_RELOC_D30V_15_PCREL, R_D30V_15_PCREL },
	468	{ BFD_RELOC_D30V_15_PCREL_R, R_D30V_15_PCREL_R },
	469	{ BFD_RELOC_D30V_21, R_D30V_21 },
	470	{ BFD_RELOC_D30V_21_PCREL, R_D30V_21_PCREL },
	471	{ BFD_RELOC_D30V_21_PCREL_R, R_D30V_21_PCREL_R },
	472	{ BFD_RELOC_D30V_32, R_D30V_32 },
	473	{ BFD_RELOC_D30V_32_PCREL, R_D30V_32_PCREL },
	474	{ BFD_RELOC_32, R_D30V_32_NORMAL },
	475	};
	476
	477	static reloc_howto_type *
47b0e7ad NC	478	bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
47b0e7ad NC	479	bfd_reloc_code_real_type code)
252b5132 RH	480	{
	481	unsigned int i;
	482
	483	for (i = 0;
	484	i < sizeof (d30v_reloc_map) / sizeof (struct d30v_reloc_map);
	485	i++)
	486	{
	487	if (d30v_reloc_map[i].bfd_reloc_val == code)
	488	return &elf_d30v_howto_table[d30v_reloc_map[i].elf_reloc_val];
	489	}
	490
	491	return NULL;
	492	}
	493
157090f7 AM	494	static reloc_howto_type *
	495	bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
	496	const char *r_name)
	497	{
	498	unsigned int i;
	499
	500	for (i = 0;
	501	i < sizeof (elf_d30v_howto_table) / sizeof (elf_d30v_howto_table[0]);
	502	i++)
	503	if (elf_d30v_howto_table[i].name != NULL
	504	&& strcasecmp (elf_d30v_howto_table[i].name, r_name) == 0)
	505	return &elf_d30v_howto_table[i];
	506
	507	return NULL;
	508	}
	509
252b5132 RH	510	/* Set the howto pointer for an D30V ELF reloc (type REL). */
	511
	512	static void
47b0e7ad NC	513	d30v_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
	514	arelent *cache_ptr,
	515	Elf_Internal_Rela *dst)
252b5132 RH	516	{
	517	unsigned int r_type;
	518
	519	r_type = ELF32_R_TYPE (dst->r_info);
	520	BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
	521	cache_ptr->howto = &elf_d30v_howto_table[r_type];
	522	}
	523
	524	/* Set the howto pointer for an D30V ELF reloc (type RELA). */
	525
	526	static void
47b0e7ad NC	527	d30v_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
	528	arelent *cache_ptr,
	529	Elf_Internal_Rela *dst)
252b5132 RH	530	{
	531	unsigned int r_type;
	532
	533	r_type = ELF32_R_TYPE (dst->r_info);
	534	BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
	535	cache_ptr->howto = &elf_d30v_howto_table[r_type];
	536	}
	537
	538	#define ELF_ARCH bfd_arch_d30v
aa4f99bb AO	539	#define ELF_MACHINE_CODE EM_D30V
aa4f99bb AO	540	#define ELF_MACHINE_ALT1 EM_CYGNUS_D30V
252b5132 RH	541	#define ELF_MAXPAGESIZE 0x1000
	542
	543	#define TARGET_BIG_SYM bfd_elf32_d30v_vec
	544	#define TARGET_BIG_NAME "elf32-d30v"
	545
	546	#define elf_info_to_howto d30v_info_to_howto_rela
	547	#define elf_info_to_howto_rel d30v_info_to_howto_rel
	548	#define elf_backend_object_p 0
	549	#define elf_backend_final_write_processing 0
	550
	551	#include "elf32-target.h"