bfd/coff-h8500.c

   1 /* BFD back-end for Renesas H8/500 COFF binaries.
   2    Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
   3    2005, 2007, 2008, 2012  Free Software Foundation, Inc.
   4    Contributed by Cygnus Support.
   5    Written by Steve Chamberlain, <sac@cygnus.com>.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 #include "sysdep.h"
  25 #include "bfd.h"
  26 #include "libbfd.h"
  27 #include "bfdlink.h"
  28 #include "coff/h8500.h"
  29 #include "coff/internal.h"
  30 #include "libcoff.h"
  31
  32
  33 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
  34
  35 static reloc_howto_type r_imm8 =
  36 HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0,
  37        complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE);
  38
  39 static reloc_howto_type r_imm16 =
  40 HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0,
  41        complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
  42
  43 static reloc_howto_type r_imm24 =
  44 HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0,
  45        complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE);
  46
  47 static reloc_howto_type r_imm32 =
  48 HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0,
  49        complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE);
  50
  51 static reloc_howto_type r_high8 =
  52 HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0,
  53        complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE);
  54
  55 static reloc_howto_type r_low16 =
  56 HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0,
  57        complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
  58
  59 static reloc_howto_type r_pcrel8 =
  60 HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE);
  61
  62 static reloc_howto_type r_pcrel16 =
  63 HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE);
  64
  65 static reloc_howto_type r_high16 =
  66 HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0,
  67        complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE);
  68 \f
  69 /* Turn a howto into a reloc number.  */
  70
  71 static int
  72 coff_h8500_select_reloc (reloc_howto_type *howto)
  73 {
  74   return howto->type;
  75 }
  76
  77 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
  78
  79 #define BADMAG(x) H8500BADMAG(x)
  80 #define H8500 1                 /* Customize coffcode.h */
  81
  82 #define __A_MAGIC_SET__
  83
  84 /* Code to swap in the reloc.  */
  85 #define SWAP_IN_RELOC_OFFSET    H_GET_32
  86 #define SWAP_OUT_RELOC_OFFSET   H_PUT_32
  87 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
  88   dst->r_stuff[0] = 'S'; \
  89   dst->r_stuff[1] = 'C';
  90
  91 /* Code to turn a r_type into a howto ptr, uses the above howto table.  */
  92
  93 static void
  94 rtype2howto (arelent * internal, struct internal_reloc *dst)
  95 {
  96   switch (dst->r_type)
  97     {
  98     default:
  99       abort ();
 100       break;
 101     case R_H8500_IMM8:
 102       internal->howto = &r_imm8;
 103       break;
 104     case R_H8500_IMM16:
 105       internal->howto = &r_imm16;
 106       break;
 107     case R_H8500_IMM24:
 108       internal->howto = &r_imm24;
 109       break;
 110     case R_H8500_IMM32:
 111       internal->howto = &r_imm32;
 112       break;
 113     case R_H8500_PCREL8:
 114       internal->howto = &r_pcrel8;
 115       break;
 116     case R_H8500_PCREL16:
 117       internal->howto = &r_pcrel16;
 118       break;
 119     case R_H8500_HIGH8:
 120       internal->howto = &r_high8;
 121       break;
 122     case R_H8500_HIGH16:
 123       internal->howto = &r_high16;
 124       break;
 125     case R_H8500_LOW16:
 126       internal->howto = &r_low16;
 127       break;
 128     }
 129 }
 130
 131 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
 132
 133 /* Perform any necessary magic to the addend in a reloc entry.  */
 134
 135 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
 136  cache_ptr->addend =  ext_reloc.r_offset;
 137
 138 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
 139  reloc_processing(relent, reloc, symbols, abfd, section)
 140
 141 static void
 142 reloc_processing (arelent * relent,
 143                   struct internal_reloc *reloc,
 144                   asymbol ** symbols,
 145                   bfd * abfd,
 146                   asection * section)
 147 {
 148   relent->address = reloc->r_vaddr;
 149   rtype2howto (relent, reloc);
 150
 151   if (reloc->r_symndx > 0)
 152     relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
 153   else
 154     relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
 155
 156   relent->addend = reloc->r_offset;
 157   relent->address -= section->vma;
 158 }
 159
 160 static void
 161 extra_case (bfd *in_abfd,
 162             struct bfd_link_info *link_info,
 163             struct bfd_link_order *link_order,
 164             arelent *reloc,
 165             bfd_byte *data,
 166             unsigned int *src_ptr,
 167             unsigned int *dst_ptr)
 168 {
 169   bfd_byte *d = data+*dst_ptr;
 170   asection *input_section = link_order->u.indirect.section;
 171
 172   switch (reloc->howto->type)
 173     {
 174     case R_H8500_IMM8:
 175       bfd_put_8 (in_abfd,
 176                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
 177                  d);
 178       (*dst_ptr) += 1;
 179       (*src_ptr) += 1;
 180       break;
 181
 182     case R_H8500_HIGH8:
 183       bfd_put_8 (in_abfd,
 184                  (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
 185                   >> 16),
 186                  d);
 187       (*dst_ptr) += 1;
 188       (*src_ptr) += 1;
 189       break;
 190
 191     case R_H8500_IMM16:
 192       bfd_put_16 (in_abfd,
 193                   bfd_coff_reloc16_get_value (reloc, link_info, input_section),
 194                   d);
 195       (*dst_ptr) += 2;
 196       (*src_ptr) += 2;
 197       break;
 198
 199     case R_H8500_LOW16:
 200       bfd_put_16 (in_abfd,
 201                   bfd_coff_reloc16_get_value (reloc, link_info, input_section),
 202                   d);
 203
 204       (*dst_ptr) += 2;
 205       (*src_ptr) += 2;
 206       break;
 207
 208     case R_H8500_HIGH16:
 209       bfd_put_16 (in_abfd,
 210                   (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
 211                    >> 16),
 212                   d);
 213
 214       (*dst_ptr) += 2;
 215       (*src_ptr) += 2;
 216       break;
 217
 218     case R_H8500_IMM24:
 219       {
 220         int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
 221         int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
 222         v = (v & 0x00ffffff) | (o & 0xff00000);
 223         bfd_put_32 (in_abfd, (bfd_vma) v, data  + *dst_ptr -1);
 224         (*dst_ptr) += 3;
 225         (*src_ptr) += 3;
 226       }
 227       break;
 228     case R_H8500_IMM32:
 229       {
 230         int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
 231         bfd_put_32 (in_abfd, (bfd_vma) v, data  + *dst_ptr);
 232         (*dst_ptr) += 4;
 233         (*src_ptr) += 4;
 234       }
 235       break;
 236
 237     case R_H8500_PCREL8:
 238       {
 239         bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
 240                                                   input_section);
 241         bfd_vma dot = (*dst_ptr
 242                        + input_section->output_offset
 243                        + input_section->output_section->vma);
 244         int gap = dst - dot - 1; /* -1 since were in the odd byte of the
 245                                     word and the pc's been incremented.  */
 246
 247         if (gap > 128 || gap < -128)
 248           {
 249             if (! ((*link_info->callbacks->reloc_overflow)
 250                    (link_info, NULL,
 251                     bfd_asymbol_name (*reloc->sym_ptr_ptr),
 252                     reloc->howto->name, reloc->addend, input_section->owner,
 253                     input_section, reloc->address)))
 254               abort ();
 255           }
 256         bfd_put_8 (in_abfd, gap, data + *dst_ptr);
 257         (*dst_ptr)++;
 258         (*src_ptr)++;
 259         break;
 260       }
 261     case R_H8500_PCREL16:
 262       {
 263         bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
 264                                                   input_section);
 265         bfd_vma dot = (*dst_ptr
 266                        + input_section->output_offset
 267                        + input_section->output_section->vma);
 268         int gap = dst - dot - 1; /* -1 since were in the odd byte of the
 269                                     word and the pc's been incremented.  */
 270
 271         if (gap > 32767 || gap < -32768)
 272           {
 273             if (! ((*link_info->callbacks->reloc_overflow)
 274                    (link_info, NULL,
 275                     bfd_asymbol_name (*reloc->sym_ptr_ptr),
 276                     reloc->howto->name, reloc->addend, input_section->owner,
 277                     input_section, reloc->address)))
 278               abort ();
 279           }
 280         bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
 281         (*dst_ptr) += 2;
 282         (*src_ptr) += 2;
 283         break;
 284       }
 285
 286     default:
 287       abort ();
 288     }
 289 }
 290
 291 #define coff_reloc16_extra_cases extra_case
 292
 293 #ifndef bfd_pe_print_pdata
 294 #define bfd_pe_print_pdata      NULL
 295 #endif
 296
 297 #include "coffcode.h"
 298
 299 #undef  coff_bfd_get_relocated_section_contents
 300 #undef coff_bfd_relax_section
 301 #define coff_bfd_get_relocated_section_contents \
 302   bfd_coff_reloc16_get_relocated_section_contents
 303 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
 304
 305 CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE)