[deliverable/binutils-gdb.git] / bfd / coff-h8500.c

/* BFD back-end for Hitachi H8/500 COFF binaries.
   Copyright 1993, 94, 95, 1997 Free Software Foundation, Inc.
   Contributed by Cygnus Support.
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/h8500.h"
#include "coff/internal.h"
#include "libcoff.h"

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)

static reloc_howto_type r_imm8 =
HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
       complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);

static reloc_howto_type r_imm16 =
HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
       complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);

static reloc_howto_type r_imm24 =
HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
       complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);

static reloc_howto_type r_imm32 =
HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
       complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);

static reloc_howto_type r_high8 =
HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
       complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);

static reloc_howto_type r_low16 =
HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
       complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);

static reloc_howto_type r_pcrel8 =
HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);

static reloc_howto_type r_pcrel16 =
HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);

static reloc_howto_type r_high16 =
HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
       complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);

/* Turn a howto into a reloc number */

static int
coff_h8500_select_reloc (howto)
     reloc_howto_type *howto;
{
  return howto->type;
}

#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)

#define BADMAG(x) H8500BADMAG(x)
#define H8500 1			/* Customize coffcode.h */

#define __A_MAGIC_SET__

/* Code to swap in the reloc */
#define SWAP_IN_RELOC_OFFSET   bfd_h_get_32
#define SWAP_OUT_RELOC_OFFSET bfd_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_H8500_IMM8:
      internal->howto = &r_imm8;
      break;
    case R_H8500_IMM16:
      internal->howto = &r_imm16;
      break;
    case R_H8500_IMM24:
      internal->howto = &r_imm24;
      break;
    case R_H8500_IMM32:
      internal->howto = &r_imm32;
      break;
    case R_H8500_PCREL8:
      internal->howto = &r_pcrel8;
      break;
    case R_H8500_PCREL16:
      internal->howto = &r_pcrel16;
      break;
    case R_H8500_HIGH8:
      internal->howto = &r_high8;
      break;
    case R_H8500_HIGH16:
      internal->howto = &r_high16;
      break;
    case R_H8500_LOW16:
      internal->howto = &r_low16;
      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;
{
  bfd_byte *d = data+*dst_ptr;
  asection *input_section = link_order->u.indirect.section;
  switch (reloc->howto->type)
    {
    case R_H8500_IMM8:
      bfd_put_8 (in_abfd,
		 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
		 d);
      (*dst_ptr) += 1;
      (*src_ptr) += 1;
      break;

    case R_H8500_HIGH8:
      bfd_put_8 (in_abfd,
		 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
		  >> 16),
		 d );
      (*dst_ptr) += 1;
      (*src_ptr) += 1;
      break;

    case R_H8500_IMM16:
      bfd_put_16 (in_abfd,
		  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
		  d  );
      (*dst_ptr) += 2;
      (*src_ptr) += 2;
      break;

    case R_H8500_LOW16:
      bfd_put_16 (in_abfd,
		  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
		  d);

      (*dst_ptr) += 2;
      (*src_ptr) += 2;
      break;

    case R_H8500_HIGH16:
      bfd_put_16 (in_abfd,
		  (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
		   >>16),
		  d);

      (*dst_ptr) += 2;
      (*src_ptr) += 2;
      break;

    case R_H8500_IMM24:
      {
	int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
	int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
	v = (v & 0x00ffffff) | (o & 0xff00000);
	bfd_put_32 (in_abfd, v, data  + *dst_ptr -1);
	(*dst_ptr) +=3;
	(*src_ptr)+=3;;
      }
      break;
    case R_H8500_IMM32:
      {
	int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
	bfd_put_32 (in_abfd, v, data  + *dst_ptr);
	(*dst_ptr) +=4;
	(*src_ptr)+=4;;
      }
      break;

    case R_H8500_PCREL8:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = link_order->offset
	  + *dst_ptr
	    + link_order->u.indirect.section->output_section->vma;
	int gap = dst - dot - 1; /* -1 since were in the odd byte of the
				    word and the pc's been incremented */

	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_H8500_PCREL16:
      {
	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
						  input_section);
	bfd_vma dot = link_order->offset
	  + *dst_ptr
	    + link_order->u.indirect.section->output_section->vma;
	int gap = dst - dot - 1; /* -1 since were in the odd byte of the
				    word and the pc's been incremented */

	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, 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 (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)
Commit	Line	Data
252b5132 RH	1	/* BFD back-end for Hitachi H8/500 COFF binaries.
	2	Copyright 1993, 94, 95, 1997 Free Software Foundation, Inc.
	3	Contributed by Cygnus Support.
	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
	20	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	21
	22	#include "bfd.h"
	23	#include "sysdep.h"
	24	#include "libbfd.h"
	25	#include "bfdlink.h"
	26	#include "coff/h8500.h"
	27	#include "coff/internal.h"
	28	#include "libcoff.h"
	29
	30	#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
	31
	32	static reloc_howto_type r_imm8 =
	33	HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
	34	complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);
	35
	36	static reloc_howto_type r_imm16 =
	37	HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
	38	complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);
	39
	40	static reloc_howto_type r_imm24 =
	41	HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
	42	complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);
	43
	44	static reloc_howto_type r_imm32 =
	45	HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
	46	complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);
	47
252b5132 RH	48	static reloc_howto_type r_high8 =
	49	HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
	50	complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);
	51
	52	static reloc_howto_type r_low16 =
	53	HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
	54	complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
	55
	56	static reloc_howto_type r_pcrel8 =
	57	HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);
	58
252b5132 RH	59	static reloc_howto_type r_pcrel16 =
	60	HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);
	61
	62	static reloc_howto_type r_high16 =
	63	HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
	64	complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);
	65
252b5132 RH	66	/* Turn a howto into a reloc number */
252b5132 RH	67
5fcfd273	68	static int
252b5132 RH	69	coff_h8500_select_reloc (howto)
	70	reloc_howto_type *howto;
	71	{
	72	return howto->type;
	73	}
	74
	75	#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
	76
252b5132 RH	77	#define BADMAG(x) H8500BADMAG(x)
	78	#define H8500 1 /* Customize coffcode.h */
	79
	80	#define __A_MAGIC_SET__
	81
	82	/* Code to swap in the reloc */
	83	#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
	84	#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
	85	#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
	86	dst->r_stuff[0] = 'S'; \
	87	dst->r_stuff[1] = 'C';
	88
	89	/* Code to turn a r_type into a howto ptr, uses the above howto table
	90	*/
	91
	92	static void
	93	rtype2howto(internal, dst)
	94	arelent * internal;
	95	struct internal_reloc *dst;
	96	{
	97	switch (dst->r_type)
	98	{
	99	default:
	100	abort ();
	101	break;
	102	case R_H8500_IMM8:
	103	internal->howto = &r_imm8;
	104	break;
	105	case R_H8500_IMM16:
	106	internal->howto = &r_imm16;
	107	break;
	108	case R_H8500_IMM24:
	109	internal->howto = &r_imm24;
	110	break;
	111	case R_H8500_IMM32:
	112	internal->howto = &r_imm32;
	113	break;
	114	case R_H8500_PCREL8:
	115	internal->howto = &r_pcrel8;
	116	break;
	117	case R_H8500_PCREL16:
	118	internal->howto = &r_pcrel16;
	119	break;
	120	case R_H8500_HIGH8:
	121	internal->howto = &r_high8;
	122	break;
	123	case R_H8500_HIGH16:
	124	internal->howto = &r_high16;
	125	break;
	126	case R_H8500_LOW16:
	127	internal->howto = &r_low16;
	128	break;
	129	}
	130	}
	131
	132	#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
	133
252b5132 RH	134	/* Perform any necessary magic to the addend in a reloc entry */
252b5132 RH	135
252b5132 RH	136	#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
	137	cache_ptr->addend = ext_reloc.r_offset;
	138
252b5132 RH	139	#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
	140	reloc_processing(relent, reloc, symbols, abfd, section)
	141
	142	static void reloc_processing (relent, reloc, symbols, abfd, section)
	143	arelent * relent;
	144	struct internal_reloc *reloc;
	145	asymbol ** symbols;
	146	bfd * abfd;
	147	asection * section;
	148	{
	149	relent->address = reloc->r_vaddr;
	150	rtype2howto (relent, reloc);
	151
	152	if (reloc->r_symndx > 0)
	153	{
	154	relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
	155	}
	156	else
	157	{
	158	relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
	159	}
	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)
	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;
	174	{
	175	bfd_byte d = data+dst_ptr;
	176	asection *input_section = link_order->u.indirect.section;
	177	switch (reloc->howto->type)
	178	{
	179	case R_H8500_IMM8:
	180	bfd_put_8 (in_abfd,
	181	bfd_coff_reloc16_get_value (reloc, link_info, input_section),
	182	d);
	183	(*dst_ptr) += 1;
	184	(*src_ptr) += 1;
	185	break;
	186
	187	case R_H8500_HIGH8:
	188	bfd_put_8 (in_abfd,
	189	(bfd_coff_reloc16_get_value (reloc, link_info, input_section)
	190	>> 16),
	191	d );
	192	(*dst_ptr) += 1;
	193	(*src_ptr) += 1;
	194	break;
	195
	196	case R_H8500_IMM16:
	197	bfd_put_16 (in_abfd,
	198	bfd_coff_reloc16_get_value (reloc, link_info, input_section),
	199	d );
	200	(*dst_ptr) += 2;
	201	(*src_ptr) += 2;
	202	break;
	203
	204	case R_H8500_LOW16:
	205	bfd_put_16 (in_abfd,
	206	bfd_coff_reloc16_get_value (reloc, link_info, input_section),
	207	d);
	208
	209	(*dst_ptr) += 2;
	210	(*src_ptr) += 2;
	211	break;
5fcfd273	212
252b5132 RH	213	case R_H8500_HIGH16:
	214	bfd_put_16 (in_abfd,
	215	(bfd_coff_reloc16_get_value (reloc, link_info, input_section)
	216	>>16),
	217	d);
	218
	219	(*dst_ptr) += 2;
	220	(*src_ptr) += 2;
	221	break;
	222
	223	case R_H8500_IMM24:
	224	{
	225	int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
6e301b2b	226	int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
252b5132 RH	227	v = (v & 0x00ffffff) \| (o & 0xff00000);
	228	bfd_put_32 (in_abfd, v, data + *dst_ptr -1);
	229	(*dst_ptr) +=3;
	230	(*src_ptr)+=3;;
	231	}
	232	break;
	233	case R_H8500_IMM32:
	234	{
	235	int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
	236	bfd_put_32 (in_abfd, v, data + *dst_ptr);
	237	(*dst_ptr) +=4;
	238	(*src_ptr)+=4;;
	239	}
	240	break;
	241
252b5132 RH	242	case R_H8500_PCREL8:
	243	{
	244	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	245	input_section);
	246	bfd_vma dot = link_order->offset
	247	+ *dst_ptr
	248	+ link_order->u.indirect.section->output_section->vma;
	249	int gap = dst - dot - 1; /* -1 since were in the odd byte of the
	250	word and the pc's been incremented */
	251
	252	if (gap > 128 \|\| gap < -128)
	253	{
	254	if (! ((*link_info->callbacks->reloc_overflow)
	255	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	256	reloc->howto->name, reloc->addend, input_section->owner,
	257	input_section, reloc->address)))
	258	abort ();
	259	}
	260	bfd_put_8 (in_abfd, gap, data + *dst_ptr);
	261	(*dst_ptr)++;
	262	(*src_ptr)++;
	263	break;
	264	}
	265	case R_H8500_PCREL16:
	266	{
	267	bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
	268	input_section);
	269	bfd_vma dot = link_order->offset
	270	+ *dst_ptr
	271	+ link_order->u.indirect.section->output_section->vma;
	272	int gap = dst - dot - 1; /* -1 since were in the odd byte of the
	273	word and the pc's been incremented */
	274
	275	if (gap > 32767 \|\| gap < -32768)
	276	{
	277	if (! ((*link_info->callbacks->reloc_overflow)
	278	(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
	279	reloc->howto->name, reloc->addend, input_section->owner,
	280	input_section, reloc->address)))
	281	abort ();
	282	}
	283	bfd_put_16 (in_abfd, gap, data + *dst_ptr);
	284	(*dst_ptr)+=2;
	285	(*src_ptr)+=2;
	286	break;
	287	}
	288
	289	default:
	290	abort ();
	291	}
	292	}
	293
	294	#define coff_reloc16_extra_cases extra_case
	295
	296	#include "coffcode.h"
	297
252b5132 RH	298	#undef coff_bfd_get_relocated_section_contents
	299	#undef coff_bfd_relax_section
	300	#define coff_bfd_get_relocated_section_contents \
	301	bfd_coff_reloc16_get_relocated_section_contents
	302	#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
	303
c3c89269	304	CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)