[thirdparty/binutils-gdb.git] / bfd / coff-w65.c

/* BFD back-end for WDC 65816 COFF binaries.
   Copyright 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   2006, 2007 Free Software Foundation, Inc.
   Written by Steve Chamberlain, <sac@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 "bfdlink.h"
#include "coff/w65.h"
#include "coff/internal.h"
#include "libcoff.h"

static int  select_reloc              PARAMS ((reloc_howto_type *));
static void rtype2howto               PARAMS ((arelent *, struct internal_reloc *));
static void reloc_processing          PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
static int  w65_reloc16_estimate    PARAMS ((bfd *, asection *, arelent *, unsigned int, struct bfd_link_info *));
static void w65_reloc16_extra_cases PARAMS ((bfd *,struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
static reloc_howto_type howto_table[] =
  {
    HOWTO (R_W65_ABS8,    0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS16,   1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_ABS24,   0,  2, 32, FALSE, 0, complain_overflow_bitfield, 0, "abs24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
    HOWTO (R_W65_ABS8S8,  0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, ">abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS8S16, 0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "^abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS16S8, 1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, ">abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_ABS16S16,1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "^abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_PCR8,    0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "pcrel8", TRUE, 0x000000ff, 0x000000ff, TRUE),
    HOWTO (R_W65_PCR16,   1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "pcrel16", TRUE, 0x0000ffff, 0x0000ffff, TRUE),
    HOWTO (R_W65_DP,      0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "dp", TRUE, 0x000000ff, 0x000000ff, FALSE),
  };

/* Turn a howto into a reloc number.  */

#define SELECT_RELOC(x,howto) \
  { x.r_type = select_reloc(howto); }

#define BADMAG(x) (W65BADMAG(x))
#define W65 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';

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

/* 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;
{
  internal->howto = howto_table + dst->r_type - 1;
}

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

  relent->addend = reloc->r_offset;

  relent->address -= section->vma;
  /*  relent->section = 0;*/
}

static int
w65_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
     bfd *abfd;
     asection *input_section;
     arelent *reloc;
     unsigned int shrink;
     struct bfd_link_info *link_info;
{
  bfd_vma value;
  bfd_vma dot;
  bfd_vma gap;

  /* The address of the thing to be relocated will have moved back by
   the size of the shrink  - but we don't change reloc->address here,
   since we need it to know where the relocation lives in the source
   uncooked section.  */

  /*  reloc->address -= shrink;   conceptual */

  bfd_vma address = reloc->address - shrink;

  switch (reloc->howto->type)
    {
    case R_MOV16B2:
    case R_JMP2:
      shrink+=2;
      break;

      /* Thing is a move one byte.  */
    case R_MOV16B1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      if (value >= 0xff00)
	{
	  /* Change the reloc type from 16bit, possible 8 to 8bit
	     possible 16.  */
	  reloc->howto = reloc->howto + 1;
	  /* The place to relc moves back by one.  */
	  /* This will be two bytes smaller in the long run.  */
	  shrink += 2;
	  bfd_perform_slip (abfd, 2, input_section, address);
	}

      break;
      /* This is the 24 bit branch which could become an 8 bitter,
	 the relocation points to the first byte of the insn, not the
	 actual data.  */

    case R_JMPL1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      dot = input_section->output_section->vma +
	input_section->output_offset + address;

      /* See if the address we're looking at within 127 bytes of where
	 we are, if so then we can use a small branch rather than the
	 jump we were going to.  */
      gap = value - dot;

      if (-120 < (long) gap && (long) gap < 120)
	{
	  /* Change the reloc type from 24bit, possible 8 to 8bit
	     possible 32.  */
	  reloc->howto = reloc->howto + 1;
	  /* This will be two bytes smaller in the long run.  */
	  shrink += 2;
	  bfd_perform_slip (abfd, 2, input_section, address);
	}
      break;

    case R_JMP1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      dot = input_section->output_section->vma +
	input_section->output_offset + address;

      /* See if the address we're looking at within 127 bytes of where
	 we are, if so then we can use a small branch rather than the
	 jump we were going to.  */
      gap = value - (dot - shrink);

      if (-120 < (long) gap && (long) gap < 120)
	{
	  /* Change the reloc type from 16bit, possible 8 to 8bit
	     possible 16.  */
	  reloc->howto = reloc->howto + 1;
	  /* The place to relc moves back by one.  */

	  /* This will be two bytes smaller in the long run.  */
	  shrink += 2;
	  bfd_perform_slip (abfd, 2, input_section, address);
	}
      break;
    }

  return shrink;
}

/* First phase of a relaxing link.  */

/* Reloc types
   large		small
   R_MOV16B1		R_MOV16B2	mov.b with 16bit or 8 bit address
   R_JMP1		R_JMP2		jmp or pcrel branch
   R_JMPL1		R_JMPL_B8	24jmp or pcrel branch
   R_MOV24B1		R_MOV24B2	24 or 8 bit reloc for mov.b  */

static void
w65_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
			   dst_ptr)
     bfd *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;
{
  unsigned int src_address = *src_ptr;
  unsigned int dst_address = *dst_ptr;
  asection *input_section = link_order->u.indirect.section;

  switch (reloc->howto->type)
    {
    case R_W65_ABS8:
    case R_W65_DP:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	bfd_put_8 (abfd, gap, data + dst_address);
	dst_address += 1;
	src_address += 1;
      }
      break;

    case R_W65_ABS8S8:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	gap >>= 8;
	bfd_put_8 (abfd, gap, data + dst_address);
	dst_address += 1;
	src_address += 1;
      }
      break;

    case R_W65_ABS8S16:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	gap >>= 16;
	bfd_put_8 (abfd, gap, data + dst_address);
	dst_address += 1;
	src_address += 1;
      }
      break;

    case R_W65_ABS16:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);

	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
	dst_address += 2;
	src_address += 2;
      }
      break;
    case R_W65_ABS16S8:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	gap >>= 8;
	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
	dst_address += 2;
	src_address += 2;
      }
      break;
    case R_W65_ABS16S16:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	gap >>= 16;
	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
	dst_address += 2;
	src_address += 2;
      }
      break;

    case R_W65_ABS24:
      {
	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
						       input_section);
	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
	bfd_put_8 (abfd, gap >> 16, data+dst_address + 2);
	dst_address += 3;
	src_address += 3;
      }
      break;

    case R_W65_PCR8:
      {
	int gap = bfd_coff_reloc16_get_value (reloc, link_info,
					      input_section);
	bfd_vma dot = (dst_address
		       + input_section->output_offset
		       + input_section->output_section->vma);

	gap -= dot + 1;
	if (gap < -128 || gap > 127)
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, NULL,
		    bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }
	bfd_put_8 (abfd, gap, data + dst_address);
	dst_address += 1;
	src_address += 1;
      }
      break;

    case R_W65_PCR16:
      {
	bfd_vma gap = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = (dst_address
		       + input_section->output_offset
		       + input_section->output_section->vma);

	/* This wraps within the page, so ignore the relativeness, look at the
	   high part.  */
	if ((gap & 0xf0000) != (dot & 0xf0000))
	  {
	    if (! ((*link_info->callbacks->reloc_overflow)
		   (link_info, NULL,
		    bfd_asymbol_name (*reloc->sym_ptr_ptr),
		    reloc->howto->name, reloc->addend, input_section->owner,
		    input_section, reloc->address)))
	      abort ();
	  }

	gap -= dot + 2;
	bfd_put_16 (abfd, gap, data + dst_address);
	dst_address += 2;
	src_address += 2;
      }
      break;
    default:
      printf (_("ignoring reloc %s\n"), reloc->howto->name);
      break;

    }
  *src_ptr = src_address;
  *dst_ptr = dst_address;
}

#define coff_reloc16_extra_cases w65_reloc16_extra_cases
#define coff_reloc16_estimate w65_reloc16_estimate

#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_LITTLE_COFF_TARGET_VEC (w65_vec, "coff-w65", BFD_IS_RELAXABLE, 0, '_', NULL, COFF_SWAP_TABLE)
Commit	Line	Data
252b5132	1	/* BFD back-end for WDC 65816 COFF binaries.
f592407e	2	Copyright 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3db64b00	3	2006, 2007 Free Software Foundation, Inc.
252b5132 RH	4	Written by Steve Chamberlain, <sac@cygnus.com>.
	5
	6	This file is part of BFD, the Binary File Descriptor library.
	7
	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.
	12
	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.
	17
	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
3e110533	20	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132	21
252b5132	22	#include "sysdep.h"
3db64b00	23	#include "bfd.h"
252b5132 RH	24	#include "libbfd.h"
	25	#include "bfdlink.h"
	26	#include "coff/w65.h"
	27	#include "coff/internal.h"
	28	#include "libcoff.h"
	29
f4ffd778 NC	30	static int select_reloc PARAMS ((reloc_howto_type *));
	31	static void rtype2howto PARAMS ((arelent , struct internal_reloc ));
	32	static void reloc_processing PARAMS ((arelent , struct internal_reloc , asymbol *, bfd , asection *));
	33	static int w65_reloc16_estimate PARAMS ((bfd , asection , arelent , unsigned int, struct bfd_link_info ));
	34	static void w65_reloc16_extra_cases PARAMS ((bfd ,struct bfd_link_info , struct bfd_link_order , arelent , bfd_byte , unsigned int , unsigned int *));
	35
252b5132 RH	36	#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
252b5132 RH	37	static reloc_howto_type howto_table[] =
f4ffd778	38	{
b34976b6 AM	39	HOWTO (R_W65_ABS8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
	40	HOWTO (R_W65_ABS16, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
	41	HOWTO (R_W65_ABS24, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "abs24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
	42	HOWTO (R_W65_ABS8S8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, ">abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
	43	HOWTO (R_W65_ABS8S16, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "^abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
	44	HOWTO (R_W65_ABS16S8, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, ">abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
	45	HOWTO (R_W65_ABS16S16,1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "^abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
	46	HOWTO (R_W65_PCR8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "pcrel8", TRUE, 0x000000ff, 0x000000ff, TRUE),
	47	HOWTO (R_W65_PCR16, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "pcrel16", TRUE, 0x0000ffff, 0x0000ffff, TRUE),
	48	HOWTO (R_W65_DP, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "dp", TRUE, 0x000000ff, 0x000000ff, FALSE),
f4ffd778 NC	49	};
	50
	51	/* Turn a howto into a reloc number. */
252b5132 RH	52
	53	#define SELECT_RELOC(x,howto) \
	54	{ x.r_type = select_reloc(howto); }
	55
	56	#define BADMAG(x) (W65BADMAG(x))
	57	#define W65 1 /* Customize coffcode.h */
	58	#define __A_MAGIC_SET__
	59
252b5132	60	/* Code to swap in the reloc */
dc810e39 AM	61	#define SWAP_IN_RELOC_OFFSET H_GET_32
dc810e39 AM	62	#define SWAP_OUT_RELOC_OFFSET H_PUT_32
252b5132 RH	63	#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
	64	dst->r_stuff[0] = 'S'; \
	65	dst->r_stuff[1] = 'C';
	66
252b5132 RH	67	static int
	68	select_reloc (howto)
	69	reloc_howto_type *howto;
	70	{
	71	return howto->type ;
	72	}
	73
f4ffd778	74	/* Code to turn a r_type into a howto ptr, uses the above howto table. */
252b5132 RH	75
	76	static void
	77	rtype2howto (internal, dst)
	78	arelent *internal;
	79	struct internal_reloc *dst;
	80	{
f4ffd778	81	internal->howto = howto_table + dst->r_type - 1;
252b5132 RH	82	}
	83
	84	#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
	85
f4ffd778	86	/* Perform any necessary magic to the addend in a reloc entry. */
252b5132	87
252b5132 RH	88	#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
	89	cache_ptr->addend = ext_reloc.r_offset;
	90
252b5132 RH	91	#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
	92	reloc_processing(relent, reloc, symbols, abfd, section)
	93
	94	static void
	95	reloc_processing (relent, reloc, symbols, abfd, section)
	96	arelent * relent;
	97	struct internal_reloc *reloc;
	98	asymbol ** symbols;
	99	bfd * abfd;
	100	asection * section;
	101	{
	102	relent->address = reloc->r_vaddr;
	103	rtype2howto (relent, reloc);
	104
	105	if (((int) reloc->r_symndx) > 0)
f4ffd778	106	relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132	107	else
f592407e	108	relent->sym_ptr_ptr = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;
252b5132	109
252b5132 RH	110	relent->addend = reloc->r_offset;
	111
	112	relent->address -= section->vma;
	113	/* relent->section = 0;*/
	114	}
	115
252b5132	116	static int
f4ffd778	117	w65_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
252b5132 RH	118	bfd *abfd;
	119	asection *input_section;
	120	arelent *reloc;
	121	unsigned int shrink;
	122	struct bfd_link_info *link_info;
	123	{
cbfe05c4	124	bfd_vma value;
252b5132 RH	125	bfd_vma dot;
	126	bfd_vma gap;
	127
cbfe05c4	128	/* The address of the thing to be relocated will have moved back by
252b5132 RH	129	the size of the shrink - but we don't change reloc->address here,
252b5132 RH	130	since we need it to know where the relocation lives in the source
f4ffd778	131	uncooked section. */
252b5132 RH	132
	133	/* reloc->address -= shrink; conceptual */
	134
	135	bfd_vma address = reloc->address - shrink;
252b5132 RH	136
252b5132 RH	137	switch (reloc->howto->type)
cbfe05c4	138	{
252b5132 RH	139	case R_MOV16B2:
	140	case R_JMP2:
	141	shrink+=2;
	142	break;
	143
f4ffd778	144	/* Thing is a move one byte. */
252b5132	145	case R_MOV16B1:
f4ffd778	146	value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132 RH	147
252b5132 RH	148	if (value >= 0xff00)
cbfe05c4	149	{
252b5132	150	/* Change the reloc type from 16bit, possible 8 to 8bit
f4ffd778	151	possible 16. */
cbfe05c4	152	reloc->howto = reloc->howto + 1;
f4ffd778 NC	153	/* The place to relc moves back by one. */
	154	/* This will be two bytes smaller in the long run. */
	155	shrink += 2;
	156	bfd_perform_slip (abfd, 2, input_section, address);
cbfe05c4	157	}
252b5132 RH	158
252b5132 RH	159	break;
cbfe05c4	160	/* This is the 24 bit branch which could become an 8 bitter,
f4ffd778 NC	161	the relocation points to the first byte of the insn, not the
f4ffd778 NC	162	actual data. */
252b5132 RH	163
252b5132 RH	164	case R_JMPL1:
f4ffd778	165	value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
cbfe05c4	166
252b5132 RH	167	dot = input_section->output_section->vma +
252b5132 RH	168	input_section->output_offset + address;
cbfe05c4	169
252b5132 RH	170	/* See if the address we're looking at within 127 bytes of where
252b5132 RH	171	we are, if so then we can use a small branch rather than the
f4ffd778 NC	172	jump we were going to. */
f4ffd778 NC	173	gap = value - dot;
cbfe05c4	174
f4ffd778	175	if (-120 < (long) gap && (long) gap < 120)
cbfe05c4	176	{
252b5132	177	/* Change the reloc type from 24bit, possible 8 to 8bit
f4ffd778	178	possible 32. */
cbfe05c4	179	reloc->howto = reloc->howto + 1;
f4ffd778 NC	180	/* This will be two bytes smaller in the long run. */
	181	shrink += 2;
	182	bfd_perform_slip (abfd, 2, input_section, address);
252b5132 RH	183	}
	184	break;
	185
	186	case R_JMP1:
f4ffd778	187	value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
cbfe05c4	188
252b5132 RH	189	dot = input_section->output_section->vma +
252b5132 RH	190	input_section->output_offset + address;
cbfe05c4	191
252b5132 RH	192	/* See if the address we're looking at within 127 bytes of where
252b5132 RH	193	we are, if so then we can use a small branch rather than the
f4ffd778	194	jump we were going to. */
252b5132	195	gap = value - (dot - shrink);
252b5132	196
f4ffd778	197	if (-120 < (long) gap && (long) gap < 120)
cbfe05c4	198	{
252b5132	199	/* Change the reloc type from 16bit, possible 8 to 8bit
f4ffd778	200	possible 16. */
cbfe05c4	201	reloc->howto = reloc->howto + 1;
f4ffd778	202	/* The place to relc moves back by one. */
252b5132	203
f4ffd778 NC	204	/* This will be two bytes smaller in the long run. */
	205	shrink += 2;
	206	bfd_perform_slip (abfd, 2, input_section, address);
252b5132 RH	207	}
	208	break;
	209	}
	210
252b5132 RH	211	return shrink;
	212	}
	213
f4ffd778	214	/* First phase of a relaxing link. */
252b5132 RH	215
	216	/* Reloc types
	217	large small
	218	R_MOV16B1 R_MOV16B2 mov.b with 16bit or 8 bit address
	219	R_JMP1 R_JMP2 jmp or pcrel branch
	220	R_JMPL1 R_JMPL_B8 24jmp or pcrel branch
f4ffd778	221	R_MOV24B1 R_MOV24B2 24 or 8 bit reloc for mov.b */
252b5132 RH	222
252b5132 RH	223	static void
f4ffd778	224	w65_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
252b5132 RH	225	dst_ptr)
	226	bfd *abfd;
	227	struct bfd_link_info *link_info;
	228	struct bfd_link_order *link_order;
	229	arelent *reloc;
	230	bfd_byte *data;
	231	unsigned int *src_ptr;
	232	unsigned int *dst_ptr;
	233	{
	234	unsigned int src_address = *src_ptr;
	235	unsigned int dst_address = *dst_ptr;
	236	asection *input_section = link_order->u.indirect.section;
	237
	238	switch (reloc->howto->type)
	239	{
	240	case R_W65_ABS8:
	241	case R_W65_DP:
	242	{
	243	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	244	input_section);
	245	bfd_put_8 (abfd, gap, data + dst_address);
	246	dst_address += 1;
	247	src_address += 1;
	248	}
	249	break;
	250
	251	case R_W65_ABS8S8:
	252	{
	253	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	254	input_section);
	255	gap >>= 8;
	256	bfd_put_8 (abfd, gap, data + dst_address);
	257	dst_address += 1;
	258	src_address += 1;
	259	}
	260	break;
	261
	262	case R_W65_ABS8S16:
	263	{
	264	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	265	input_section);
f4ffd778	266	gap >>= 16;
252b5132 RH	267	bfd_put_8 (abfd, gap, data + dst_address);
	268	dst_address += 1;
	269	src_address += 1;
	270	}
	271	break;
	272
	273	case R_W65_ABS16:
	274	{
	275	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	276	input_section);
	277
dc810e39	278	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
252b5132 RH	279	dst_address += 2;
	280	src_address += 2;
	281	}
	282	break;
	283	case R_W65_ABS16S8:
	284	{
	285	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	286	input_section);
	287	gap >>= 8;
dc810e39	288	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
252b5132 RH	289	dst_address += 2;
	290	src_address += 2;
	291	}
	292	break;
	293	case R_W65_ABS16S16:
	294	{
	295	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	296	input_section);
	297	gap >>= 16;
dc810e39	298	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
252b5132 RH	299	dst_address += 2;
	300	src_address += 2;
	301	}
	302	break;
	303
	304	case R_W65_ABS24:
	305	{
	306	unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	307	input_section);
dc810e39	308	bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
f4ffd778	309	bfd_put_8 (abfd, gap >> 16, data+dst_address + 2);
252b5132 RH	310	dst_address += 3;
	311	src_address += 3;
	312	}
	313	break;
	314
	315	case R_W65_PCR8:
	316	{
	317	int gap = bfd_coff_reloc16_get_value (reloc, link_info,
	318	input_section);
44da2da1 AM	319	bfd_vma dot = (dst_address
	320	+ input_section->output_offset
	321	+ input_section->output_section->vma);
252b5132 RH	322
252b5132 RH	323	gap -= dot + 1;
f4ffd778 NC	324	if (gap < -128 \|\| gap > 127)
	325	{
	326	if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f L	327	(link_info, NULL,
dfeffb9f L	328	bfd_asymbol_name (*reloc->sym_ptr_ptr),
f4ffd778 NC	329	reloc->howto->name, reloc->addend, input_section->owner,
	330	input_section, reloc->address)))
	331	abort ();
	332	}
252b5132 RH	333	bfd_put_8 (abfd, gap, data + dst_address);
	334	dst_address += 1;
	335	src_address += 1;
	336	}
	337	break;
	338
	339	case R_W65_PCR16:
	340	{
	341	bfd_vma gap = bfd_coff_reloc16_get_value (reloc, link_info,
	342	input_section);
44da2da1 AM	343	bfd_vma dot = (dst_address
	344	+ input_section->output_offset
	345	+ input_section->output_section->vma);
252b5132	346
252b5132	347	/* This wraps within the page, so ignore the relativeness, look at the
f4ffd778 NC	348	high part. */
	349	if ((gap & 0xf0000) != (dot & 0xf0000))
	350	{
	351	if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f L	352	(link_info, NULL,
dfeffb9f L	353	bfd_asymbol_name (*reloc->sym_ptr_ptr),
f4ffd778 NC	354	reloc->howto->name, reloc->addend, input_section->owner,
	355	input_section, reloc->address)))
	356	abort ();
	357	}
252b5132 RH	358
	359	gap -= dot + 2;
	360	bfd_put_16 (abfd, gap, data + dst_address);
	361	dst_address += 2;
	362	src_address += 2;
	363	}
	364	break;
	365	default:
6e301b2b	366	printf (_("ignoring reloc %s\n"), reloc->howto->name);
252b5132 RH	367	break;
	368
	369	}
	370	*src_ptr = src_address;
	371	*dst_ptr = dst_address;
252b5132 RH	372	}
252b5132 RH	373
f4ffd778 NC	374	#define coff_reloc16_extra_cases w65_reloc16_extra_cases
f4ffd778 NC	375	#define coff_reloc16_estimate w65_reloc16_estimate
252b5132 RH	376
	377	#include "coffcode.h"
	378
252b5132 RH	379	#undef coff_bfd_get_relocated_section_contents
	380	#undef coff_bfd_relax_section
	381	#define coff_bfd_get_relocated_section_contents \
	382	bfd_coff_reloc16_get_relocated_section_contents
	383	#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
	384
3fa78519	385	CREATE_LITTLE_COFF_TARGET_VEC (w65_vec, "coff-w65", BFD_IS_RELAXABLE, 0, '_', NULL, COFF_SWAP_TABLE)