[binutils.git] / bfd / coff-z8k.c

/* BFD back-end for Zilog Z800n COFF binaries.
   Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001
   Free Software Foundation, Inc.
   Contributed by Cygnus Support.
   Written by Steve Chamberlain, <[email protected]>.

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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/z8k.h"
#include "coff/internal.h"
#include "libcoff.h"

static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
static int coff_z8k_select_reloc PARAMS ((reloc_howto_type *));

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)

static reloc_howto_type r_imm32 =
HOWTO (R_IMM32, 0, 2, 32, false, 0,
       complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
       0xffffffff, false);

static reloc_howto_type r_imm4l =
HOWTO (R_IMM4L, 0, 0, 4, false, 0,
       complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);

static reloc_howto_type r_da =
HOWTO (R_IMM16, 0, 1, 16, false, 0,
       complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
       false);

static reloc_howto_type r_imm8 =
HOWTO (R_IMM8, 0, 0, 8, false, 0,
       complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
       false);

static reloc_howto_type r_rel16 =
HOWTO (R_REL16, 0, 1, 16, false, 0,
       complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff,
       true);

static reloc_howto_type r_jr =
HOWTO (R_JR, 0, 0, 8, true, 0, complain_overflow_signed, 0,
       "r_jr", true, 0, 0, true);

static reloc_howto_type r_disp7 =
HOWTO (R_DISP7, 0, 0, 7, true, 0, complain_overflow_bitfield, 0,
       "r_disp7", true, 0, 0, true);

static reloc_howto_type r_callr =
HOWTO (R_CALLR, 0, 1, 12, true, 0, complain_overflow_signed, 0,
       "r_callr", true, 0xfff, 0xfff, true);

/* Turn a howto into a reloc number */

static int
coff_z8k_select_reloc (howto)
     reloc_howto_type *howto;
{
  return howto->type;
}

#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)

#define BADMAG(x) Z8KBADMAG(x)
#define Z8K 1			/* Customize coffcode.h */
#define __A_MAGIC_SET__

/* Code to swap in the reloc.  */
#define SWAP_IN_RELOC_OFFSET	H_GET_32
#define SWAP_OUT_RELOC_OFFSET	H_PUT_32
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
  dst->r_stuff[0] = 'S'; \
  dst->r_stuff[1] = 'C';

/* Code to turn a r_type into a howto ptr, uses the above howto table.  */

static void
rtype2howto (internal, dst)
     arelent * internal;
     struct internal_reloc *dst;
{
  switch (dst->r_type)
    {
    default:
      abort ();
      break;
    case R_IMM8:
      internal->howto = &r_imm8;
      break;
     case R_IMM16:
      internal->howto = &r_da;
      break;
    case R_JR:
      internal->howto = &r_jr;
      break;
    case R_DISP7:
      internal->howto = &r_disp7;
      break;
    case R_CALLR:
      internal->howto = &r_callr;
      break;
    case R_REL16:
      internal->howto = &r_rel16;
      break;
    case R_IMM32:
      internal->howto = &r_imm32;
      break;
    case R_IMM4L:
      internal->howto = &r_imm4l;
      break;
    }
}

#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)

/* Perform any necessary magic to the addend in a reloc entry.  */

#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
 cache_ptr->addend =  ext_reloc.r_offset;

#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
 reloc_processing(relent, reloc, symbols, abfd, section)

static void
reloc_processing (relent, reloc, symbols, abfd, section)
     arelent * relent;
     struct internal_reloc * reloc;
     asymbol ** symbols;
     bfd * abfd;
     asection * section;
{
  relent->address = reloc->r_vaddr;
  rtype2howto (relent, reloc);

  if (reloc->r_symndx > 0)
    relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
  else
    relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;

  relent->addend = reloc->r_offset;
  relent->address -= section->vma;
}

static void
extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
     bfd * in_abfd;
     struct bfd_link_info * link_info;
     struct bfd_link_order * link_order;
     arelent * reloc;
     bfd_byte * data;
     unsigned int * src_ptr;
     unsigned int * dst_ptr;
{
  asection * input_section = link_order->u.indirect.section;

  switch (reloc->howto->type)
    {
    case R_IMM8:
      bfd_put_8 (in_abfd,
		 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
		 data + *dst_ptr);
      (*dst_ptr) += 1;
      (*src_ptr) += 1;
      break;

    case R_IMM32:
      /* If no flags are set, assume immediate value.  */
      if (! (*reloc->sym_ptr_ptr)->section->flags)
	{
	  bfd_put_32 (in_abfd,
		      bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section),
		      data + *dst_ptr);
	}
      else
	{
	  bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						    input_section);
	  /* Adresses are 23 bit, and the layout of those in a 32-bit
	     value is as follows:
	       1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
	     (A - address bits,  x - ignore).  */
	  dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000;
	  bfd_put_32 (in_abfd, dst, data + *dst_ptr);
	}
      (*dst_ptr) += 4;
      (*src_ptr) += 4;
      break;

    case R_IMM4L:
      bfd_put_8 (in_abfd,
		 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
		  | (0x0f
		     & bfd_coff_reloc16_get_value (reloc, link_info,
						   input_section))),
		 data + *dst_ptr);
      (*dst_ptr) += 1;
      (*src_ptr) += 1;
      break;

    case R_IMM16:
      bfd_put_16 (in_abfd,
		  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
		  data + *dst_ptr);
      (*dst_ptr) += 2;
      (*src_ptr) += 2;
      break;

    case R_JR:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = (link_order->offset
		       + *dst_ptr
		       + input_section->output_section->vma);
	int gap = dst - dot - 1;  /* -1, since we're in the odd byte of the
                                     word and the pc's been incremented.  */

	if (gap & 1)
	  abort ();
	gap /= 2;
	if (gap > 128 || gap < -128)
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }
	bfd_put_8 (in_abfd, gap, data + *dst_ptr);
	(*dst_ptr)++;
	(*src_ptr)++;
	break;
      }

    case R_DISP7:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = (link_order->offset
		       + *dst_ptr
		       + input_section->output_section->vma);
	int gap = dst - dot - 1;  /* -1, since we're in the odd byte of the
                                     word and the pc's been incremented.  */

	if (gap & 1)
	  abort ();
	gap /= 2;

	if (gap > 0 || gap < -128)
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }
	bfd_put_8 (in_abfd,
                   (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
                   data + *dst_ptr);
	(*dst_ptr)++;
	(*src_ptr)++;
	break;
      }

    case R_CALLR:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = (link_order->offset
		       + *dst_ptr
		       + input_section->output_section->vma);
	int gap = dst - dot - 2;

	if (gap & 1)
	  abort ();
	gap /= 2;
	if (gap > 8191 || gap < -8192)
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }
	bfd_put_16 (in_abfd,
                    (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff),
                    data + *dst_ptr);
	(*dst_ptr) += 2;
	(*src_ptr) += 2;
	break;
      }

    case R_REL16:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = (link_order->offset
		       + *dst_ptr
		       + input_section->output_section->vma);
	int gap = dst - dot - 2;

	if (gap > 32767 || gap < -32768)
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }
	bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
	(*dst_ptr) += 2;
	(*src_ptr) += 2;
	break;
      }

    default:
      abort ();
    }
}

#define coff_reloc16_extra_cases extra_case

#include "coffcode.h"

#undef  coff_bfd_get_relocated_section_contents
#undef coff_bfd_relax_section
#define coff_bfd_get_relocated_section_contents \
  bfd_coff_reloc16_get_relocated_section_contents
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section

CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL)
Commit	Line	Data
252b5132	1	/* BFD back-end for Zilog Z800n COFF binaries.
879db8be	2	Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001
7898deda	3	Free Software Foundation, Inc.
252b5132 RH	4	Contributed by Cygnus Support.
	5	Written by Steve Chamberlain, <[email protected]>.
	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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	22
	23	#include "bfd.h"
	24	#include "sysdep.h"
	25	#include "libbfd.h"
	26	#include "bfdlink.h"
	27	#include "coff/z8k.h"
	28	#include "coff/internal.h"
	29	#include "libcoff.h"
	30
f4ffd778 NC	31	static void extra_case PARAMS ((bfd , struct bfd_link_info , struct bfd_link_order , arelent , bfd_byte , unsigned int , unsigned int *));
	32	static void reloc_processing PARAMS ((arelent , struct internal_reloc , asymbol *, bfd , asection *));
	33	static void rtype2howto PARAMS ((arelent , struct internal_reloc ));
	34	static int coff_z8k_select_reloc PARAMS ((reloc_howto_type *));
	35
252b5132 RH	36	#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
	37
	38	static reloc_howto_type r_imm32 =
879db8be	39	HOWTO (R_IMM32, 0, 2, 32, false, 0,
252b5132 RH	40	complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
	41	0xffffffff, false);
	42
	43	static reloc_howto_type r_imm4l =
879db8be	44	HOWTO (R_IMM4L, 0, 0, 4, false, 0,
252b5132 RH	45	complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
	46
	47	static reloc_howto_type r_da =
	48	HOWTO (R_IMM16, 0, 1, 16, false, 0,
	49	complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
	50	false);
	51
	52	static reloc_howto_type r_imm8 =
879db8be	53	HOWTO (R_IMM8, 0, 0, 8, false, 0,
252b5132 RH	54	complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
	55	false);
	56
6840198f NC	57	static reloc_howto_type r_rel16 =
	58	HOWTO (R_REL16, 0, 1, 16, false, 0,
	59	complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff,
	60	true);
	61
252b5132	62	static reloc_howto_type r_jr =
879db8be	63	HOWTO (R_JR, 0, 0, 8, true, 0, complain_overflow_signed, 0,
252b5132 RH	64	"r_jr", true, 0, 0, true);
252b5132 RH	65
6840198f	66	static reloc_howto_type r_disp7 =
879db8be	67	HOWTO (R_DISP7, 0, 0, 7, true, 0, complain_overflow_bitfield, 0,
6840198f NC	68	"r_disp7", true, 0, 0, true);
	69
	70	static reloc_howto_type r_callr =
	71	HOWTO (R_CALLR, 0, 1, 12, true, 0, complain_overflow_signed, 0,
	72	"r_callr", true, 0xfff, 0xfff, true);
	73
252b5132 RH	74	/* Turn a howto into a reloc number */
252b5132 RH	75
cbfe05c4	76	static int
252b5132 RH	77	coff_z8k_select_reloc (howto)
	78	reloc_howto_type *howto;
	79	{
	80	return howto->type;
	81	}
	82
	83	#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
	84
252b5132 RH	85	#define BADMAG(x) Z8KBADMAG(x)
	86	#define Z8K 1 /* Customize coffcode.h */
	87	#define __A_MAGIC_SET__
	88
f4ffd778	89	/* Code to swap in the reloc. */
dc810e39 AM	90	#define SWAP_IN_RELOC_OFFSET H_GET_32
dc810e39 AM	91	#define SWAP_OUT_RELOC_OFFSET H_PUT_32
252b5132 RH	92	#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
	93	dst->r_stuff[0] = 'S'; \
	94	dst->r_stuff[1] = 'C';
	95
f4ffd778	96	/* Code to turn a r_type into a howto ptr, uses the above howto table. */
252b5132 RH	97
	98	static void
	99	rtype2howto (internal, dst)
	100	arelent * internal;
	101	struct internal_reloc *dst;
	102	{
	103	switch (dst->r_type)
	104	{
	105	default:
	106	abort ();
	107	break;
	108	case R_IMM8:
	109	internal->howto = &r_imm8;
	110	break;
	111	case R_IMM16:
	112	internal->howto = &r_da;
	113	break;
	114	case R_JR:
	115	internal->howto = &r_jr;
	116	break;
6840198f NC	117	case R_DISP7:
	118	internal->howto = &r_disp7;
	119	break;
	120	case R_CALLR:
	121	internal->howto = &r_callr;
	122	break;
	123	case R_REL16:
	124	internal->howto = &r_rel16;
	125	break;
252b5132 RH	126	case R_IMM32:
	127	internal->howto = &r_imm32;
	128	break;
	129	case R_IMM4L:
	130	internal->howto = &r_imm4l;
	131	break;
	132	}
	133	}
	134
f4ffd778	135	#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
252b5132	136
f4ffd778	137	/* Perform any necessary magic to the addend in a reloc entry. */
252b5132	138
252b5132 RH	139	#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
	140	cache_ptr->addend = ext_reloc.r_offset;
	141
252b5132 RH	142	#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
	143	reloc_processing(relent, reloc, symbols, abfd, section)
	144
cbfe05c4	145	static void
252b5132 RH	146	reloc_processing (relent, reloc, symbols, abfd, section)
252b5132 RH	147	arelent * relent;
879db8be	148	struct internal_reloc * reloc;
252b5132 RH	149	asymbol ** symbols;
	150	bfd * abfd;
	151	asection * section;
	152	{
	153	relent->address = reloc->r_vaddr;
	154	rtype2howto (relent, reloc);
	155
	156	if (reloc->r_symndx > 0)
879db8be	157	relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132	158	else
879db8be	159	relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
252b5132	160
252b5132 RH	161	relent->addend = reloc->r_offset;
	162	relent->address -= section->vma;
	163	}
	164
	165	static void
	166	extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
879db8be NC	167	bfd * in_abfd;
	168	struct bfd_link_info * link_info;
	169	struct bfd_link_order * link_order;
	170	arelent * reloc;
	171	bfd_byte * data;
	172	unsigned int * src_ptr;
	173	unsigned int * dst_ptr;
252b5132	174	{
879db8be	175	asection * input_section = link_order->u.indirect.section;
252b5132 RH	176
	177	switch (reloc->howto->type)
	178	{
	179	case R_IMM8:
	180	bfd_put_8 (in_abfd,
	181	bfd_coff_reloc16_get_value (reloc, link_info, input_section),
	182	data + *dst_ptr);
	183	(*dst_ptr) += 1;
	184	(*src_ptr) += 1;
	185	break;
	186
	187	case R_IMM32:
3c25c5f6 NC	188	/* If no flags are set, assume immediate value. */
	189	if (! (*reloc->sym_ptr_ptr)->section->flags)
	190	{
	191	bfd_put_32 (in_abfd,
	192	bfd_coff_reloc16_get_value (reloc, link_info,
	193	input_section),
	194	data + *dst_ptr);
	195	}
	196	else
	197	{
	198	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	199	input_section);
	200	/* Adresses are 23 bit, and the layout of those in a 32-bit
	201	value is as follows:
	202	1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
	203	(A - address bits, x - ignore). */
	204	dst = (dst & 0xffff) \| ((dst & 0xff0000) << 8) \| 0x80000000;
	205	bfd_put_32 (in_abfd, dst, data + *dst_ptr);
	206	}
252b5132 RH	207	(*dst_ptr) += 4;
	208	(*src_ptr) += 4;
	209	break;
	210
	211	case R_IMM4L:
	212	bfd_put_8 (in_abfd,
cbfe05c4	213	((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
252b5132 RH	214	\| (0x0f
	215	& bfd_coff_reloc16_get_value (reloc, link_info,
	216	input_section))),
	217	data + *dst_ptr);
	218	(*dst_ptr) += 1;
	219	(*src_ptr) += 1;
	220	break;
	221
	222	case R_IMM16:
	223	bfd_put_16 (in_abfd,
	224	bfd_coff_reloc16_get_value (reloc, link_info, input_section),
	225	data + *dst_ptr);
	226	(*dst_ptr) += 2;
	227	(*src_ptr) += 2;
	228	break;
	229
	230	case R_JR:
	231	{
	232	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	233	input_section);
	234	bfd_vma dot = (link_order->offset
	235	+ *dst_ptr
	236	+ input_section->output_section->vma);
879db8be NC	237	int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
879db8be NC	238	word and the pc's been incremented. */
252b5132 RH	239
	240	if (gap & 1)
	241	abort ();
	242	gap /= 2;
	243	if (gap > 128 \|\| gap < -128)
	244	{
	245	if (! ((*link_info->callbacks->reloc_overflow)
	246	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	247	reloc->howto->name, reloc->addend, input_section->owner,
	248	input_section, reloc->address)))
	249	abort ();
	250	}
	251	bfd_put_8 (in_abfd, gap, data + *dst_ptr);
	252	(*dst_ptr)++;
	253	(*src_ptr)++;
	254	break;
	255	}
6840198f NC	256
	257	case R_DISP7:
	258	{
	259	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	260	input_section);
	261	bfd_vma dot = (link_order->offset
	262	+ *dst_ptr
	263	+ input_section->output_section->vma);
879db8be NC	264	int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
879db8be NC	265	word and the pc's been incremented. */
6840198f NC	266
	267	if (gap & 1)
	268	abort ();
	269	gap /= 2;
	270
	271	if (gap > 0 \|\| gap < -128)
	272	{
	273	if (! ((*link_info->callbacks->reloc_overflow)
	274	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	275	reloc->howto->name, reloc->addend, input_section->owner,
	276	input_section, reloc->address)))
	277	abort ();
	278	}
	279	bfd_put_8 (in_abfd,
	280	(bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
	281	data + *dst_ptr);
	282	(*dst_ptr)++;
	283	(*src_ptr)++;
	284	break;
	285	}
	286
	287	case R_CALLR:
	288	{
	289	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	290	input_section);
	291	bfd_vma dot = (link_order->offset
	292	+ *dst_ptr
	293	+ input_section->output_section->vma);
	294	int gap = dst - dot - 2;
	295
	296	if (gap & 1)
	297	abort ();
	298	gap /= 2;
	299	if (gap > 8191 \|\| gap < -8192)
	300	{
	301	if (! ((*link_info->callbacks->reloc_overflow)
	302	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	303	reloc->howto->name, reloc->addend, input_section->owner,
	304	input_section, reloc->address)))
	305	abort ();
	306	}
	307	bfd_put_16 (in_abfd,
	308	(bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) \| (-gap & 0x0fff),
	309	data + *dst_ptr);
	310	(*dst_ptr) += 2;
	311	(*src_ptr) += 2;
	312	break;
	313	}
	314
	315	case R_REL16:
	316	{
	317	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	318	input_section);
	319	bfd_vma dot = (link_order->offset
	320	+ *dst_ptr
	321	+ input_section->output_section->vma);
	322	int gap = dst - dot - 2;
	323
	324	if (gap > 32767 \|\| gap < -32768)
	325	{
	326	if (! ((*link_info->callbacks->reloc_overflow)
	327	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	328	reloc->howto->name, reloc->addend, input_section->owner,
	329	input_section, reloc->address)))
330	abort ();
331	}
dc810e39	332	bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
6840198f NC	333	(*dst_ptr) += 2;
	334	(*src_ptr) += 2;
	335	break;
	336	}
879db8be	337
252b5132 RH	338	default:
	339	abort ();
	340	}
	341	}
	342
	343	#define coff_reloc16_extra_cases extra_case
	344
	345	#include "coffcode.h"
	346
252b5132 RH	347	#undef coff_bfd_get_relocated_section_contents
	348	#undef coff_bfd_relax_section
	349	#define coff_bfd_get_relocated_section_contents \
	350	bfd_coff_reloc16_get_relocated_section_contents
	351	#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
	352
c3c89269	353	CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL)