bfd/elf32-m68hc12.c

   1 /* Motorola 68HC12-specific support for 32-bit ELF
   2    Copyright 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
   3    Contributed by Stephane Carrez (stcarrez@nerim.fr)
   4    (Heavily copied from the D10V port by Martin Hunt (hunt@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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "bfdlink.h"
  25 #include "libbfd.h"
  26 #include "elf-bfd.h"
  27 #include "elf32-m68hc1x.h"
  28 #include "elf/m68hc11.h"
  29 #include "opcode/m68hc11.h"
  30
  31 /* Relocation functions.  */
  32 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
  33   (bfd *, bfd_reloc_code_real_type);
  34 static void m68hc11_info_to_howto_rel
  35   (bfd *, arelent *, Elf_Internal_Rela *);
  36
  37 /* Trampoline generation.  */
  38 static bfd_boolean m68hc12_elf_size_one_stub
  39   (struct bfd_hash_entry *gen_entry, void *in_arg);
  40 static bfd_boolean m68hc12_elf_build_one_stub
  41   (struct bfd_hash_entry *gen_entry, void *in_arg);
  42 static struct bfd_link_hash_table* m68hc12_elf_bfd_link_hash_table_create
  43   (bfd*);
  44
  45 static bfd_boolean m68hc12_elf_set_mach_from_flags PARAMS ((bfd *));
  46
  47 /* Use REL instead of RELA to save space */
  48 #define USE_REL 1
  49
  50 /* The 68HC12 microcontroler has a memory bank switching system
  51    with a 16Kb window in the 64Kb address space.  The extended memory
  52    is mapped in the 16Kb window (at 0x8000).  The page register controls
  53    which 16Kb bank is mapped.  The call/rtc instructions take care of
  54    bank switching in function calls/returns.
  55
  56    For GNU Binutils to work, we consider there is a physical memory
  57    at 0..0x0ffff and a kind of virtual memory above that.  Symbols
  58    in virtual memory have their addresses treated in a special way
  59    when disassembling and when linking.
  60
  61    For the linker to work properly, we must always relocate the virtual
  62    memory as if it is mapped at 0x8000.  When a 16-bit relocation is
  63    made in the virtual memory, we check that it does not cross the
  64    memory bank where it is used.  This would involve a page change
  65    which would be wrong.  The 24-bit relocation is for that and it
  66    treats the address as a physical address + page number.
  67
  68
  69                                         Banked
  70                                         Address Space
  71                                         |               |       Page n
  72                                         +---------------+ 0x1010000
  73                                         |               |
  74                                         | jsr _foo      |
  75                                         | ..            |       Page 3
  76                                         | _foo:         |
  77                                         +---------------+ 0x100C000
  78                                         |               |
  79                                         | call _bar     |
  80                                         | ..            |       Page 2
  81                                         | _bar:         |
  82                                         +---------------+ 0x1008000
  83                                 /------>|               |
  84                                 |       | call _foo     |       Page 1
  85                                 |       |               |
  86                                 |       +---------------+ 0x1004000
  87       Physical                  |       |               |
  88       Address Space             |       |               |       Page 0
  89                                 |       |               |
  90     +-----------+ 0x00FFFF      |       +---------------+ 0x1000000
  91     |           |               |
  92     | call _foo |               |
  93     |           |               |
  94     +-----------+ 0x00BFFF -+---/
  95     |           |           |
  96     |           |           |
  97     |           | 16K       |
  98     |           |           |
  99     +-----------+ 0x008000 -+
 100     |           |
 101     |           |
 102     =           =
 103     |           |
 104     |           |
 105     +-----------+ 0000
 106
 107
 108    The 'call _foo' must be relocated with page 3 and 16-bit address
 109    mapped at 0x8000.
 110
 111    The 3-bit and 16-bit PC rel relocation is only used by 68HC12.  */
 112 static reloc_howto_type elf_m68hc11_howto_table[] = {
 113   /* This reloc does nothing.  */
 114   HOWTO (R_M68HC11_NONE,        /* type */
 115          0,                     /* rightshift */
 116          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 117          32,                    /* bitsize */
 118          FALSE,                 /* pc_relative */
 119          0,                     /* bitpos */
 120          complain_overflow_dont,/* complain_on_overflow */
 121          bfd_elf_generic_reloc, /* special_function */
 122          "R_M68HC12_NONE",      /* name */
 123          FALSE,                 /* partial_inplace */
 124          0,                     /* src_mask */
 125          0,                     /* dst_mask */
 126          FALSE),                /* pcrel_offset */
 127
 128   /* A 8 bit absolute relocation */
 129   HOWTO (R_M68HC11_8,           /* type */
 130          0,                     /* rightshift */
 131          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 132          8,                     /* bitsize */
 133          FALSE,                 /* pc_relative */
 134          0,                     /* bitpos */
 135          complain_overflow_bitfield,    /* complain_on_overflow */
 136          bfd_elf_generic_reloc, /* special_function */
 137          "R_M68HC12_8",         /* name */
 138          FALSE,                 /* partial_inplace */
 139          0x00ff,                /* src_mask */
 140          0x00ff,                /* dst_mask */
 141          FALSE),                /* pcrel_offset */
 142
 143   /* A 8 bit absolute relocation (upper address) */
 144   HOWTO (R_M68HC11_HI8,         /* type */
 145          8,                     /* rightshift */
 146          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 147          8,                     /* bitsize */
 148          FALSE,                 /* pc_relative */
 149          0,                     /* bitpos */
 150          complain_overflow_bitfield,    /* complain_on_overflow */
 151          bfd_elf_generic_reloc, /* special_function */
 152          "R_M68HC12_HI8",       /* name */
 153          FALSE,                 /* partial_inplace */
 154          0x00ff,                /* src_mask */
 155          0x00ff,                /* dst_mask */
 156          FALSE),                /* pcrel_offset */
 157
 158   /* A 8 bit absolute relocation (upper address) */
 159   HOWTO (R_M68HC11_LO8,         /* type */
 160          0,                     /* rightshift */
 161          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 162          8,                     /* bitsize */
 163          FALSE,                 /* pc_relative */
 164          0,                     /* bitpos */
 165          complain_overflow_dont,        /* complain_on_overflow */
 166          bfd_elf_generic_reloc, /* special_function */
 167          "R_M68HC12_LO8",       /* name */
 168          FALSE,                 /* partial_inplace */
 169          0x00ff,                /* src_mask */
 170          0x00ff,                /* dst_mask */
 171          FALSE),                /* pcrel_offset */
 172
 173   /* A 8 bit PC-rel relocation */
 174   HOWTO (R_M68HC11_PCREL_8,     /* type */
 175          0,                     /* rightshift */
 176          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 177          8,                     /* bitsize */
 178          TRUE,                  /* pc_relative */
 179          0,                     /* bitpos */
 180          complain_overflow_bitfield,    /* complain_on_overflow */
 181          bfd_elf_generic_reloc, /* special_function */
 182          "R_M68HC12_PCREL_8",   /* name */
 183          FALSE,                 /* partial_inplace */
 184          0x00ff,                /* src_mask */
 185          0x00ff,                /* dst_mask */
 186          TRUE),                 /* pcrel_offset */
 187
 188   /* A 16 bit absolute relocation */
 189   HOWTO (R_M68HC11_16,          /* type */
 190          0,                     /* rightshift */
 191          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 192          16,                    /* bitsize */
 193          FALSE,                 /* pc_relative */
 194          0,                     /* bitpos */
 195          complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
 196          bfd_elf_generic_reloc, /* special_function */
 197          "R_M68HC12_16",        /* name */
 198          FALSE,                 /* partial_inplace */
 199          0xffff,                /* src_mask */
 200          0xffff,                /* dst_mask */
 201          FALSE),                /* pcrel_offset */
 202
 203   /* A 32 bit absolute relocation.  This one is never used for the
 204      code relocation.  It's used by gas for -gstabs generation.  */
 205   HOWTO (R_M68HC11_32,          /* type */
 206          0,                     /* rightshift */
 207          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 208          32,                    /* bitsize */
 209          FALSE,                 /* pc_relative */
 210          0,                     /* bitpos */
 211          complain_overflow_bitfield,    /* complain_on_overflow */
 212          bfd_elf_generic_reloc, /* special_function */
 213          "R_M68HC12_32",        /* name */
 214          FALSE,                 /* partial_inplace */
 215          0xffffffff,            /* src_mask */
 216          0xffffffff,            /* dst_mask */
 217          FALSE),                /* pcrel_offset */
 218
 219   /* A 3 bit absolute relocation */
 220   HOWTO (R_M68HC11_3B,          /* type */
 221          0,                     /* rightshift */
 222          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 223          3,                     /* bitsize */
 224          FALSE,                 /* pc_relative */
 225          0,                     /* bitpos */
 226          complain_overflow_bitfield,    /* complain_on_overflow */
 227          bfd_elf_generic_reloc, /* special_function */
 228          "R_M68HC12_4B",        /* name */
 229          FALSE,                 /* partial_inplace */
 230          0x003,                 /* src_mask */
 231          0x003,                 /* dst_mask */
 232          FALSE),                /* pcrel_offset */
 233
 234   /* A 16 bit PC-rel relocation */
 235   HOWTO (R_M68HC11_PCREL_16,    /* type */
 236          0,                     /* rightshift */
 237          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 238          16,                    /* bitsize */
 239          TRUE,                  /* pc_relative */
 240          0,                     /* bitpos */
 241          complain_overflow_dont,        /* complain_on_overflow */
 242          bfd_elf_generic_reloc, /* special_function */
 243          "R_M68HC12_PCREL_16",  /* name */
 244          FALSE,                 /* partial_inplace */
 245          0xffff,                /* src_mask */
 246          0xffff,                /* dst_mask */
 247          TRUE),                 /* pcrel_offset */
 248
 249   /* GNU extension to record C++ vtable hierarchy */
 250   HOWTO (R_M68HC11_GNU_VTINHERIT,       /* type */
 251          0,                     /* rightshift */
 252          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 253          0,                     /* bitsize */
 254          FALSE,                 /* pc_relative */
 255          0,                     /* bitpos */
 256          complain_overflow_dont,        /* complain_on_overflow */
 257          NULL,                  /* special_function */
 258          "R_M68HC11_GNU_VTINHERIT",     /* name */
 259          FALSE,                 /* partial_inplace */
 260          0,                     /* src_mask */
 261          0,                     /* dst_mask */
 262          FALSE),                /* pcrel_offset */
 263
 264   /* GNU extension to record C++ vtable member usage */
 265   HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
 266          0,                     /* rightshift */
 267          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 268          0,                     /* bitsize */
 269          FALSE,                 /* pc_relative */
 270          0,                     /* bitpos */
 271          complain_overflow_dont,        /* complain_on_overflow */
 272          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 273          "R_M68HC11_GNU_VTENTRY",       /* name */
 274          FALSE,                 /* partial_inplace */
 275          0,                     /* src_mask */
 276          0,                     /* dst_mask */
 277          FALSE),                /* pcrel_offset */
 278
 279   /* A 24 bit relocation */
 280   HOWTO (R_M68HC11_24,          /* type */
 281          0,                     /* rightshift */
 282          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 283          24,                    /* bitsize */
 284          FALSE,                 /* pc_relative */
 285          0,                     /* bitpos */
 286          complain_overflow_dont,        /* complain_on_overflow */
 287          m68hc11_elf_special_reloc,     /* special_function */
 288          "R_M68HC12_24",        /* name */
 289          FALSE,                 /* partial_inplace */
 290          0xffffff,              /* src_mask */
 291          0xffffff,              /* dst_mask */
 292          FALSE),                /* pcrel_offset */
 293
 294   /* A 16-bit low relocation */
 295   HOWTO (R_M68HC11_LO16,        /* type */
 296          0,                     /* rightshift */
 297          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 298          16,                    /* bitsize */
 299          FALSE,                 /* pc_relative */
 300          0,                     /* bitpos */
 301          complain_overflow_dont,        /* complain_on_overflow */
 302          m68hc11_elf_special_reloc,/* special_function */
 303          "R_M68HC12_LO16",      /* name */
 304          FALSE,                 /* partial_inplace */
 305          0xffff,                /* src_mask */
 306          0xffff,                /* dst_mask */
 307          FALSE),                /* pcrel_offset */
 308
 309   /* A page relocation */
 310   HOWTO (R_M68HC11_PAGE,        /* type */
 311          0,                     /* rightshift */
 312          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 313          8,                     /* bitsize */
 314          FALSE,                 /* pc_relative */
 315          0,                     /* bitpos */
 316          complain_overflow_dont,        /* complain_on_overflow */
 317          m68hc11_elf_special_reloc,/* special_function */
 318          "R_M68HC12_PAGE",      /* name */
 319          FALSE,                 /* partial_inplace */
 320          0x00ff,                /* src_mask */
 321          0x00ff,                /* dst_mask */
 322          FALSE),                /* pcrel_offset */
 323
 324   EMPTY_HOWTO (14),
 325   EMPTY_HOWTO (15),
 326   EMPTY_HOWTO (16),
 327   EMPTY_HOWTO (17),
 328   EMPTY_HOWTO (18),
 329   EMPTY_HOWTO (19),
 330
 331   /* Mark beginning of a jump instruction (any form).  */
 332   HOWTO (R_M68HC11_RL_JUMP,     /* type */
 333          0,                     /* rightshift */
 334          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 335          0,                     /* bitsize */
 336          FALSE,                 /* pc_relative */
 337          0,                     /* bitpos */
 338          complain_overflow_dont,        /* complain_on_overflow */
 339          m68hc11_elf_ignore_reloc,      /* special_function */
 340          "R_M68HC12_RL_JUMP",   /* name */
 341          TRUE,                  /* partial_inplace */
 342          0,                     /* src_mask */
 343          0,                     /* dst_mask */
 344          TRUE),                 /* pcrel_offset */
 345
 346   /* Mark beginning of Gcc relaxation group instruction.  */
 347   HOWTO (R_M68HC11_RL_GROUP,    /* type */
 348          0,                     /* rightshift */
 349          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 350          0,                     /* bitsize */
 351          FALSE,                 /* pc_relative */
 352          0,                     /* bitpos */
 353          complain_overflow_dont,        /* complain_on_overflow */
 354          m68hc11_elf_ignore_reloc,      /* special_function */
 355          "R_M68HC12_RL_GROUP",  /* name */
 356          TRUE,                  /* partial_inplace */
 357          0,                     /* src_mask */
 358          0,                     /* dst_mask */
 359          TRUE),                 /* pcrel_offset */
 360 };
 361
 362 /* Map BFD reloc types to M68HC11 ELF reloc types.  */
 363
 364 struct m68hc11_reloc_map
 365 {
 366   bfd_reloc_code_real_type bfd_reloc_val;
 367   unsigned char elf_reloc_val;
 368 };
 369
 370 static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
 371   {BFD_RELOC_NONE, R_M68HC11_NONE,},
 372   {BFD_RELOC_8, R_M68HC11_8},
 373   {BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
 374   {BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
 375   {BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
 376   {BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
 377   {BFD_RELOC_16, R_M68HC11_16},
 378   {BFD_RELOC_32, R_M68HC11_32},
 379   {BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
 380
 381   {BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
 382   {BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
 383
 384   {BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
 385   {BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
 386   {BFD_RELOC_M68HC11_24, R_M68HC11_24},
 387
 388   {BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
 389   {BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
 390 };
 391
 392 static reloc_howto_type *
 393 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 394                                  bfd_reloc_code_real_type code)
 395 {
 396   unsigned int i;
 397
 398   for (i = 0;
 399        i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
 400        i++)
 401     {
 402       if (m68hc11_reloc_map[i].bfd_reloc_val == code)
 403         return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
 404     }
 405
 406   return NULL;
 407 }
 408
 409 /* Set the howto pointer for an M68HC11 ELF reloc.  */
 410
 411 static void
 412 m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
 413                            arelent *cache_ptr, Elf_Internal_Rela *dst)
 414 {
 415   unsigned int r_type;
 416
 417   r_type = ELF32_R_TYPE (dst->r_info);
 418   BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
 419   cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
 420 }
 421
 422 \f
 423 /* Far trampoline generation.  */
 424
 425 /* Build a 68HC12 trampoline stub.  */
 426 static bfd_boolean
 427 m68hc12_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
 428 {
 429   struct elf32_m68hc11_stub_hash_entry *stub_entry;
 430   struct bfd_link_info *info;
 431   struct m68hc11_elf_link_hash_table *htab;
 432   asection *stub_sec;
 433   bfd *stub_bfd;
 434   bfd_byte *loc;
 435   bfd_vma sym_value, phys_page, phys_addr;
 436
 437   /* Massage our args to the form they really have.  */
 438   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
 439   info = (struct bfd_link_info *) in_arg;
 440
 441   htab = m68hc11_elf_hash_table (info);
 442
 443   stub_sec = stub_entry->stub_sec;
 444
 445   /* Make a note of the offset within the stubs for this entry.  */
 446   stub_entry->stub_offset = stub_sec->size;
 447   stub_sec->size += 7;
 448   loc = stub_sec->contents + stub_entry->stub_offset;
 449
 450   stub_bfd = stub_sec->owner;
 451
 452   /* Create the trampoline call stub:
 453
 454      ldy #%addr(symbol)
 455      call %page(symbol), __trampoline
 456
 457   */
 458   sym_value = (stub_entry->target_value
 459                + stub_entry->target_section->output_offset
 460                + stub_entry->target_section->output_section->vma);
 461   phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
 462   phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
 463
 464   /* ldy #%page(sym) */
 465   bfd_put_8 (stub_bfd, 0xCD, loc);
 466   bfd_put_16 (stub_bfd, phys_addr, loc + 1);
 467   loc += 3;
 468
 469   /* call %page(sym), __trampoline  */
 470   bfd_put_8 (stub_bfd, 0x4a, loc);
 471   bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
 472   bfd_put_8 (stub_bfd, phys_page, loc + 3);
 473
 474   return TRUE;
 475 }
 476
 477 /* As above, but don't actually build the stub.  Just bump offset so
 478    we know stub section sizes.  */
 479
 480 static bfd_boolean
 481 m68hc12_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
 482                            void *in_arg ATTRIBUTE_UNUSED)
 483 {
 484   struct elf32_m68hc11_stub_hash_entry *stub_entry;
 485
 486   /* Massage our args to the form they really have.  */
 487   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
 488
 489   stub_entry->stub_sec->size += 7;
 490   return TRUE;
 491 }
 492
 493 /* Create a 68HC12 ELF linker hash table.  */
 494
 495 static struct bfd_link_hash_table *
 496 m68hc12_elf_bfd_link_hash_table_create (bfd *abfd)
 497 {
 498   struct m68hc11_elf_link_hash_table *ret;
 499
 500   ret = m68hc11_elf_hash_table_create (abfd);
 501   if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
 502     return NULL;
 503
 504   ret->size_one_stub = m68hc12_elf_size_one_stub;
 505   ret->build_one_stub = m68hc12_elf_build_one_stub;
 506
 507   return &ret->root.root;
 508 }
 509 \f
 510 static bfd_boolean
 511 m68hc12_elf_set_mach_from_flags (bfd *abfd)
 512 {
 513   flagword flags = elf_elfheader (abfd)->e_flags;
 514
 515   switch (flags & EF_M68HC11_MACH_MASK)
 516     {
 517     case EF_M68HC12_MACH:
 518       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812);
 519       break;
 520     case EF_M68HCS12_MACH:
 521       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812s);
 522       break;
 523     case EF_M68HC11_GENERIC:
 524       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12,
 525                                  bfd_mach_m6812_default);
 526       break;
 527     default:
 528       return FALSE;
 529     }
 530   return TRUE;
 531 }
 532
 533 /* Specific sections:
 534    - The .page0 is a data section that is mapped in [0x0000..0x00FF].
 535      Page0 accesses are faster on the M68HC12.
 536    - The .vectors is the section that represents the interrupt
 537      vectors.  */
 538 static struct bfd_elf_special_section const
 539   m68hc12_special_sections_e[] =
 540 {
 541   { ".eeprom",   7, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
 542   { NULL,        0, 0, 0,            0 }
 543 };
 544
 545 static struct bfd_elf_special_section const
 546   m68hc12_special_sections_s[]=
 547 {
 548   { ".softregs", 9, 0, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
 549   { NULL,        0, 0, 0,            0 }
 550 };
 551
 552 static struct bfd_elf_special_section const
 553   m68hc12_special_sections_p[]=
 554 {
 555   { ".page0",    6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
 556   { NULL,        0, 0, 0,            0 }
 557 };
 558
 559 static struct bfd_elf_special_section const
 560   m68hc12_special_sections_v[]=
 561 {
 562   { ".vectors",  8, 0, SHT_PROGBITS, SHF_ALLOC },
 563   { NULL,        0, 0, 0,            0 }
 564 };
 565
 566 static struct bfd_elf_special_section const *
 567   elf32_m68hc12_special_sections[27] =
 568 {
 569   NULL,                         /* 'a' */
 570   NULL,                         /* 'b' */
 571   NULL,                         /* 'c' */
 572   NULL,                         /* 'd' */
 573   m68hc12_special_sections_e,   /* 'e' */
 574   NULL,                         /* 'f' */
 575   NULL,                         /* 'g' */
 576   NULL,                         /* 'h' */
 577   NULL,                         /* 'i' */
 578   NULL,                         /* 'j' */
 579   NULL,                         /* 'k' */
 580   NULL,                         /* 'l' */
 581   NULL,                         /* 'm' */
 582   NULL,                         /* 'n' */
 583   NULL,                         /* 'o' */
 584   m68hc12_special_sections_p,   /* 'p' */
 585   NULL,                         /* 'q' */
 586   NULL,                         /* 'r' */
 587   m68hc12_special_sections_s,   /* 's' */
 588   NULL,                         /* 't' */
 589   NULL,                         /* 'u' */
 590   m68hc12_special_sections_v,   /* 'v' */
 591   NULL,                         /* 'w' */
 592   NULL,                         /* 'x' */
 593   NULL,                         /* 'y' */
 594   NULL,                         /* 'z' */
 595   NULL                          /* other */
 596 };
 597 \f
 598 #define ELF_ARCH                bfd_arch_m68hc12
 599 #define ELF_MACHINE_CODE        EM_68HC12
 600 #define ELF_MAXPAGESIZE         0x1000
 601
 602 #define TARGET_BIG_SYM          bfd_elf32_m68hc12_vec
 603 #define TARGET_BIG_NAME         "elf32-m68hc12"
 604
 605 #define elf_info_to_howto       0
 606 #define elf_info_to_howto_rel   m68hc11_info_to_howto_rel
 607 #define elf_backend_gc_mark_hook     elf32_m68hc11_gc_mark_hook
 608 #define elf_backend_gc_sweep_hook    elf32_m68hc11_gc_sweep_hook
 609 #define elf_backend_check_relocs     elf32_m68hc11_check_relocs
 610 #define elf_backend_relocate_section elf32_m68hc11_relocate_section
 611 #define elf_backend_object_p            m68hc12_elf_set_mach_from_flags
 612 #define elf_backend_final_write_processing      0
 613 #define elf_backend_can_gc_sections             1
 614 #define elf_backend_special_sections elf32_m68hc12_special_sections
 615 #define elf_backend_post_process_headers     elf32_m68hc11_post_process_headers
 616 #define elf_backend_add_symbol_hook  elf32_m68hc11_add_symbol_hook
 617
 618 #define bfd_elf32_bfd_link_hash_table_create \
 619                                 m68hc12_elf_bfd_link_hash_table_create
 620 #define bfd_elf32_bfd_link_hash_table_free \
 621                                 m68hc11_elf_bfd_link_hash_table_free
 622 #define bfd_elf32_bfd_merge_private_bfd_data \
 623                                         _bfd_m68hc11_elf_merge_private_bfd_data
 624 #define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
 625 #define bfd_elf32_bfd_print_private_bfd_data \
 626                                         _bfd_m68hc11_elf_print_private_bfd_data
 627
 628 #include "elf32-target.h"