bfd/elf32-m68hc12.c

   1 /* Motorola 68HC12-specific support for 32-bit ELF
   2    Copyright 1999, 2000, 2002, 2003, 2004, 2005, 2006
   3    Free Software Foundation, Inc.
   4    Contributed by Stephane Carrez (stcarrez@nerim.fr)
   5    (Heavily copied from the D10V port by Martin Hunt (hunt@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 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "bfdlink.h"
  26 #include "libbfd.h"
  27 #include "elf-bfd.h"
  28 #include "elf32-m68hc1x.h"
  29 #include "elf/m68hc11.h"
  30 #include "opcode/m68hc11.h"
  31
  32 /* Relocation functions.  */
  33 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
  34   (bfd *, bfd_reloc_code_real_type);
  35 static void m68hc11_info_to_howto_rel
  36   (bfd *, arelent *, Elf_Internal_Rela *);
  37
  38 /* Trampoline generation.  */
  39 static bfd_boolean m68hc12_elf_size_one_stub
  40   (struct bfd_hash_entry *gen_entry, void *in_arg);
  41 static bfd_boolean m68hc12_elf_build_one_stub
  42   (struct bfd_hash_entry *gen_entry, void *in_arg);
  43 static struct bfd_link_hash_table* m68hc12_elf_bfd_link_hash_table_create
  44   (bfd*);
  45
  46 static bfd_boolean m68hc12_elf_set_mach_from_flags PARAMS ((bfd *));
  47
  48 /* Use REL instead of RELA to save space */
  49 #define USE_REL 1
  50
  51 /* The 68HC12 microcontroler has a memory bank switching system
  52    with a 16Kb window in the 64Kb address space.  The extended memory
  53    is mapped in the 16Kb window (at 0x8000).  The page register controls
  54    which 16Kb bank is mapped.  The call/rtc instructions take care of
  55    bank switching in function calls/returns.
  56
  57    For GNU Binutils to work, we consider there is a physical memory
  58    at 0..0x0ffff and a kind of virtual memory above that.  Symbols
  59    in virtual memory have their addresses treated in a special way
  60    when disassembling and when linking.
  61
  62    For the linker to work properly, we must always relocate the virtual
  63    memory as if it is mapped at 0x8000.  When a 16-bit relocation is
  64    made in the virtual memory, we check that it does not cross the
  65    memory bank where it is used.  This would involve a page change
  66    which would be wrong.  The 24-bit relocation is for that and it
  67    treats the address as a physical address + page number.
  68
  69
  70                                         Banked
  71                                         Address Space
  72                                         |               |       Page n
  73                                         +---------------+ 0x1010000
  74                                         |               |
  75                                         | jsr _foo      |
  76                                         | ..            |       Page 3
  77                                         | _foo:         |
  78                                         +---------------+ 0x100C000
  79                                         |               |
  80                                         | call _bar     |
  81                                         | ..            |       Page 2
  82                                         | _bar:         |
  83                                         +---------------+ 0x1008000
  84                                 /------>|               |
  85                                 |       | call _foo     |       Page 1
  86                                 |       |               |
  87                                 |       +---------------+ 0x1004000
  88       Physical                  |       |               |
  89       Address Space             |       |               |       Page 0
  90                                 |       |               |
  91     +-----------+ 0x00FFFF      |       +---------------+ 0x1000000
  92     |           |               |
  93     | call _foo |               |
  94     |           |               |
  95     +-----------+ 0x00BFFF -+---/
  96     |           |           |
  97     |           |           |
  98     |           | 16K       |
  99     |           |           |
 100     +-----------+ 0x008000 -+
 101     |           |
 102     |           |
 103     =           =
 104     |           |
 105     |           |
 106     +-----------+ 0000
 107
 108
 109    The 'call _foo' must be relocated with page 3 and 16-bit address
 110    mapped at 0x8000.
 111
 112    The 3-bit and 16-bit PC rel relocation is only used by 68HC12.  */
 113 static reloc_howto_type elf_m68hc11_howto_table[] = {
 114   /* This reloc does nothing.  */
 115   HOWTO (R_M68HC11_NONE,        /* type */
 116          0,                     /* rightshift */
 117          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 118          32,                    /* bitsize */
 119          FALSE,                 /* pc_relative */
 120          0,                     /* bitpos */
 121          complain_overflow_dont,/* complain_on_overflow */
 122          bfd_elf_generic_reloc, /* special_function */
 123          "R_M68HC12_NONE",      /* name */
 124          FALSE,                 /* partial_inplace */
 125          0,                     /* src_mask */
 126          0,                     /* dst_mask */
 127          FALSE),                /* pcrel_offset */
 128
 129   /* A 8 bit absolute relocation */
 130   HOWTO (R_M68HC11_8,           /* type */
 131          0,                     /* rightshift */
 132          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 133          8,                     /* bitsize */
 134          FALSE,                 /* pc_relative */
 135          0,                     /* bitpos */
 136          complain_overflow_bitfield,    /* complain_on_overflow */
 137          bfd_elf_generic_reloc, /* special_function */
 138          "R_M68HC12_8",         /* name */
 139          FALSE,                 /* partial_inplace */
 140          0x00ff,                /* src_mask */
 141          0x00ff,                /* dst_mask */
 142          FALSE),                /* pcrel_offset */
 143
 144   /* A 8 bit absolute relocation (upper address) */
 145   HOWTO (R_M68HC11_HI8,         /* type */
 146          8,                     /* rightshift */
 147          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 148          8,                     /* bitsize */
 149          FALSE,                 /* pc_relative */
 150          0,                     /* bitpos */
 151          complain_overflow_bitfield,    /* complain_on_overflow */
 152          bfd_elf_generic_reloc, /* special_function */
 153          "R_M68HC12_HI8",       /* name */
 154          FALSE,                 /* partial_inplace */
 155          0x00ff,                /* src_mask */
 156          0x00ff,                /* dst_mask */
 157          FALSE),                /* pcrel_offset */
 158
 159   /* A 8 bit absolute relocation (upper address) */
 160   HOWTO (R_M68HC11_LO8,         /* type */
 161          0,                     /* rightshift */
 162          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 163          8,                     /* bitsize */
 164          FALSE,                 /* pc_relative */
 165          0,                     /* bitpos */
 166          complain_overflow_dont,        /* complain_on_overflow */
 167          bfd_elf_generic_reloc, /* special_function */
 168          "R_M68HC12_LO8",       /* name */
 169          FALSE,                 /* partial_inplace */
 170          0x00ff,                /* src_mask */
 171          0x00ff,                /* dst_mask */
 172          FALSE),                /* pcrel_offset */
 173
 174   /* A 8 bit PC-rel relocation */
 175   HOWTO (R_M68HC11_PCREL_8,     /* type */
 176          0,                     /* rightshift */
 177          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 178          8,                     /* bitsize */
 179          TRUE,                  /* pc_relative */
 180          0,                     /* bitpos */
 181          complain_overflow_bitfield,    /* complain_on_overflow */
 182          bfd_elf_generic_reloc, /* special_function */
 183          "R_M68HC12_PCREL_8",   /* name */
 184          FALSE,                 /* partial_inplace */
 185          0x00ff,                /* src_mask */
 186          0x00ff,                /* dst_mask */
 187          TRUE),                 /* pcrel_offset */
 188
 189   /* A 16 bit absolute relocation */
 190   HOWTO (R_M68HC11_16,          /* type */
 191          0,                     /* rightshift */
 192          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 193          16,                    /* bitsize */
 194          FALSE,                 /* pc_relative */
 195          0,                     /* bitpos */
 196          complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
 197          bfd_elf_generic_reloc, /* special_function */
 198          "R_M68HC12_16",        /* name */
 199          FALSE,                 /* partial_inplace */
 200          0xffff,                /* src_mask */
 201          0xffff,                /* dst_mask */
 202          FALSE),                /* pcrel_offset */
 203
 204   /* A 32 bit absolute relocation.  This one is never used for the
 205      code relocation.  It's used by gas for -gstabs generation.  */
 206   HOWTO (R_M68HC11_32,          /* type */
 207          0,                     /* rightshift */
 208          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 209          32,                    /* bitsize */
 210          FALSE,                 /* pc_relative */
 211          0,                     /* bitpos */
 212          complain_overflow_bitfield,    /* complain_on_overflow */
 213          bfd_elf_generic_reloc, /* special_function */
 214          "R_M68HC12_32",        /* name */
 215          FALSE,                 /* partial_inplace */
 216          0xffffffff,            /* src_mask */
 217          0xffffffff,            /* dst_mask */
 218          FALSE),                /* pcrel_offset */
 219
 220   /* A 3 bit absolute relocation */
 221   HOWTO (R_M68HC11_3B,          /* type */
 222          0,                     /* rightshift */
 223          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 224          3,                     /* bitsize */
 225          FALSE,                 /* pc_relative */
 226          0,                     /* bitpos */
 227          complain_overflow_bitfield,    /* complain_on_overflow */
 228          bfd_elf_generic_reloc, /* special_function */
 229          "R_M68HC12_4B",        /* name */
 230          FALSE,                 /* partial_inplace */
 231          0x003,                 /* src_mask */
 232          0x003,                 /* dst_mask */
 233          FALSE),                /* pcrel_offset */
 234
 235   /* A 16 bit PC-rel relocation */
 236   HOWTO (R_M68HC11_PCREL_16,    /* type */
 237          0,                     /* rightshift */
 238          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 239          16,                    /* bitsize */
 240          TRUE,                  /* pc_relative */
 241          0,                     /* bitpos */
 242          complain_overflow_dont,        /* complain_on_overflow */
 243          bfd_elf_generic_reloc, /* special_function */
 244          "R_M68HC12_PCREL_16",  /* name */
 245          FALSE,                 /* partial_inplace */
 246          0xffff,                /* src_mask */
 247          0xffff,                /* dst_mask */
 248          TRUE),                 /* pcrel_offset */
 249
 250   /* GNU extension to record C++ vtable hierarchy */
 251   HOWTO (R_M68HC11_GNU_VTINHERIT,       /* type */
 252          0,                     /* rightshift */
 253          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 254          0,                     /* bitsize */
 255          FALSE,                 /* pc_relative */
 256          0,                     /* bitpos */
 257          complain_overflow_dont,        /* complain_on_overflow */
 258          NULL,                  /* special_function */
 259          "R_M68HC11_GNU_VTINHERIT",     /* name */
 260          FALSE,                 /* partial_inplace */
 261          0,                     /* src_mask */
 262          0,                     /* dst_mask */
 263          FALSE),                /* pcrel_offset */
 264
 265   /* GNU extension to record C++ vtable member usage */
 266   HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
 267          0,                     /* rightshift */
 268          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 269          0,                     /* bitsize */
 270          FALSE,                 /* pc_relative */
 271          0,                     /* bitpos */
 272          complain_overflow_dont,        /* complain_on_overflow */
 273          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 274          "R_M68HC11_GNU_VTENTRY",       /* name */
 275          FALSE,                 /* partial_inplace */
 276          0,                     /* src_mask */
 277          0,                     /* dst_mask */
 278          FALSE),                /* pcrel_offset */
 279
 280   /* A 24 bit relocation */
 281   HOWTO (R_M68HC11_24,          /* type */
 282          0,                     /* rightshift */
 283          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 284          24,                    /* bitsize */
 285          FALSE,                 /* pc_relative */
 286          0,                     /* bitpos */
 287          complain_overflow_dont,        /* complain_on_overflow */
 288          m68hc11_elf_special_reloc,     /* special_function */
 289          "R_M68HC12_24",        /* name */
 290          FALSE,                 /* partial_inplace */
 291          0xffffff,              /* src_mask */
 292          0xffffff,              /* dst_mask */
 293          FALSE),                /* pcrel_offset */
 294
 295   /* A 16-bit low relocation */
 296   HOWTO (R_M68HC11_LO16,        /* type */
 297          0,                     /* rightshift */
 298          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 299          16,                    /* bitsize */
 300          FALSE,                 /* pc_relative */
 301          0,                     /* bitpos */
 302          complain_overflow_dont,        /* complain_on_overflow */
 303          m68hc11_elf_special_reloc,/* special_function */
 304          "R_M68HC12_LO16",      /* name */
 305          FALSE,                 /* partial_inplace */
 306          0xffff,                /* src_mask */
 307          0xffff,                /* dst_mask */
 308          FALSE),                /* pcrel_offset */
 309
 310   /* A page relocation */
 311   HOWTO (R_M68HC11_PAGE,        /* type */
 312          0,                     /* rightshift */
 313          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 314          8,                     /* bitsize */
 315          FALSE,                 /* pc_relative */
 316          0,                     /* bitpos */
 317          complain_overflow_dont,        /* complain_on_overflow */
 318          m68hc11_elf_special_reloc,/* special_function */
 319          "R_M68HC12_PAGE",      /* name */
 320          FALSE,                 /* partial_inplace */
 321          0x00ff,                /* src_mask */
 322          0x00ff,                /* dst_mask */
 323          FALSE),                /* pcrel_offset */
 324
 325   EMPTY_HOWTO (14),
 326   EMPTY_HOWTO (15),
 327   EMPTY_HOWTO (16),
 328   EMPTY_HOWTO (17),
 329   EMPTY_HOWTO (18),
 330   EMPTY_HOWTO (19),
 331
 332   /* Mark beginning of a jump instruction (any form).  */
 333   HOWTO (R_M68HC11_RL_JUMP,     /* type */
 334          0,                     /* rightshift */
 335          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 336          0,                     /* bitsize */
 337          FALSE,                 /* pc_relative */
 338          0,                     /* bitpos */
 339          complain_overflow_dont,        /* complain_on_overflow */
 340          m68hc11_elf_ignore_reloc,      /* special_function */
 341          "R_M68HC12_RL_JUMP",   /* name */
 342          TRUE,                  /* partial_inplace */
 343          0,                     /* src_mask */
 344          0,                     /* dst_mask */
 345          TRUE),                 /* pcrel_offset */
 346
 347   /* Mark beginning of Gcc relaxation group instruction.  */
 348   HOWTO (R_M68HC11_RL_GROUP,    /* type */
 349          0,                     /* rightshift */
 350          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 351          0,                     /* bitsize */
 352          FALSE,                 /* pc_relative */
 353          0,                     /* bitpos */
 354          complain_overflow_dont,        /* complain_on_overflow */
 355          m68hc11_elf_ignore_reloc,      /* special_function */
 356          "R_M68HC12_RL_GROUP",  /* name */
 357          TRUE,                  /* partial_inplace */
 358          0,                     /* src_mask */
 359          0,                     /* dst_mask */
 360          TRUE),                 /* pcrel_offset */
 361 };
 362
 363 /* Map BFD reloc types to M68HC11 ELF reloc types.  */
 364
 365 struct m68hc11_reloc_map
 366 {
 367   bfd_reloc_code_real_type bfd_reloc_val;
 368   unsigned char elf_reloc_val;
 369 };
 370
 371 static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
 372   {BFD_RELOC_NONE, R_M68HC11_NONE,},
 373   {BFD_RELOC_8, R_M68HC11_8},
 374   {BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
 375   {BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
 376   {BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
 377   {BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
 378   {BFD_RELOC_16, R_M68HC11_16},
 379   {BFD_RELOC_32, R_M68HC11_32},
 380   {BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
 381
 382   {BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
 383   {BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
 384
 385   {BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
 386   {BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
 387   {BFD_RELOC_M68HC11_24, R_M68HC11_24},
 388
 389   {BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
 390   {BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
 391 };
 392
 393 static reloc_howto_type *
 394 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 395                                  bfd_reloc_code_real_type code)
 396 {
 397   unsigned int i;
 398
 399   for (i = 0;
 400        i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
 401        i++)
 402     {
 403       if (m68hc11_reloc_map[i].bfd_reloc_val == code)
 404         return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
 405     }
 406
 407   return NULL;
 408 }
 409
 410 /* Set the howto pointer for an M68HC11 ELF reloc.  */
 411
 412 static void
 413 m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
 414                            arelent *cache_ptr, Elf_Internal_Rela *dst)
 415 {
 416   unsigned int r_type;
 417
 418   r_type = ELF32_R_TYPE (dst->r_info);
 419   BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
 420   cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
 421 }
 422
 423 \f
 424 /* Far trampoline generation.  */
 425
 426 /* Build a 68HC12 trampoline stub.  */
 427 static bfd_boolean
 428 m68hc12_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
 429 {
 430   struct elf32_m68hc11_stub_hash_entry *stub_entry;
 431   struct bfd_link_info *info;
 432   struct m68hc11_elf_link_hash_table *htab;
 433   asection *stub_sec;
 434   bfd *stub_bfd;
 435   bfd_byte *loc;
 436   bfd_vma sym_value, phys_page, phys_addr;
 437
 438   /* Massage our args to the form they really have.  */
 439   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
 440   info = (struct bfd_link_info *) in_arg;
 441
 442   htab = m68hc11_elf_hash_table (info);
 443
 444   stub_sec = stub_entry->stub_sec;
 445
 446   /* Make a note of the offset within the stubs for this entry.  */
 447   stub_entry->stub_offset = stub_sec->size;
 448   stub_sec->size += 7;
 449   loc = stub_sec->contents + stub_entry->stub_offset;
 450
 451   stub_bfd = stub_sec->owner;
 452
 453   /* Create the trampoline call stub:
 454
 455      ldy #%addr(symbol)
 456      call %page(symbol), __trampoline
 457
 458   */
 459   sym_value = (stub_entry->target_value
 460                + stub_entry->target_section->output_offset
 461                + stub_entry->target_section->output_section->vma);
 462   phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
 463   phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
 464
 465   /* ldy #%page(sym) */
 466   bfd_put_8 (stub_bfd, 0xCD, loc);
 467   bfd_put_16 (stub_bfd, phys_addr, loc + 1);
 468   loc += 3;
 469
 470   /* call %page(sym), __trampoline  */
 471   bfd_put_8 (stub_bfd, 0x4a, loc);
 472   bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
 473   bfd_put_8 (stub_bfd, phys_page, loc + 3);
 474
 475   return TRUE;
 476 }
 477
 478 /* As above, but don't actually build the stub.  Just bump offset so
 479    we know stub section sizes.  */
 480
 481 static bfd_boolean
 482 m68hc12_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
 483                            void *in_arg ATTRIBUTE_UNUSED)
 484 {
 485   struct elf32_m68hc11_stub_hash_entry *stub_entry;
 486
 487   /* Massage our args to the form they really have.  */
 488   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
 489
 490   stub_entry->stub_sec->size += 7;
 491   return TRUE;
 492 }
 493
 494 /* Create a 68HC12 ELF linker hash table.  */
 495
 496 static struct bfd_link_hash_table *
 497 m68hc12_elf_bfd_link_hash_table_create (bfd *abfd)
 498 {
 499   struct m68hc11_elf_link_hash_table *ret;
 500
 501   ret = m68hc11_elf_hash_table_create (abfd);
 502   if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
 503     return NULL;
 504
 505   ret->size_one_stub = m68hc12_elf_size_one_stub;
 506   ret->build_one_stub = m68hc12_elf_build_one_stub;
 507
 508   return &ret->root.root;
 509 }
 510 \f
 511 static bfd_boolean
 512 m68hc12_elf_set_mach_from_flags (bfd *abfd)
 513 {
 514   flagword flags = elf_elfheader (abfd)->e_flags;
 515
 516   switch (flags & EF_M68HC11_MACH_MASK)
 517     {
 518     case EF_M68HC12_MACH:
 519       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812);
 520       break;
 521     case EF_M68HCS12_MACH:
 522       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812s);
 523       break;
 524     case EF_M68HC11_GENERIC:
 525       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12,
 526                                  bfd_mach_m6812_default);
 527       break;
 528     default:
 529       return FALSE;
 530     }
 531   return TRUE;
 532 }
 533
 534 /* Specific sections:
 535    - The .page0 is a data section that is mapped in [0x0000..0x00FF].
 536      Page0 accesses are faster on the M68HC12.
 537    - The .vectors is the section that represents the interrupt
 538      vectors.  */
 539 static const struct bfd_elf_special_section elf32_m68hc12_special_sections[] =
 540 {
 541   { STRING_COMMA_LEN (".eeprom"),   0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
 542   { STRING_COMMA_LEN (".page0"),    0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
 543   { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
 544   { STRING_COMMA_LEN (".vectors"),  0, SHT_PROGBITS, SHF_ALLOC },
 545   { NULL,                       0,  0, 0,            0 }
 546 };
 547 \f
 548 #define ELF_ARCH                bfd_arch_m68hc12
 549 #define ELF_MACHINE_CODE        EM_68HC12
 550 #define ELF_MAXPAGESIZE         0x1000
 551
 552 #define TARGET_BIG_SYM          bfd_elf32_m68hc12_vec
 553 #define TARGET_BIG_NAME         "elf32-m68hc12"
 554
 555 #define elf_info_to_howto       0
 556 #define elf_info_to_howto_rel   m68hc11_info_to_howto_rel
 557 #define elf_backend_check_relocs     elf32_m68hc11_check_relocs
 558 #define elf_backend_relocate_section elf32_m68hc11_relocate_section
 559 #define elf_backend_object_p            m68hc12_elf_set_mach_from_flags
 560 #define elf_backend_final_write_processing      0
 561 #define elf_backend_can_gc_sections             1
 562 #define elf_backend_special_sections elf32_m68hc12_special_sections
 563 #define elf_backend_post_process_headers     elf32_m68hc11_post_process_headers
 564 #define elf_backend_add_symbol_hook  elf32_m68hc11_add_symbol_hook
 565
 566 #define bfd_elf32_bfd_link_hash_table_create \
 567                                 m68hc12_elf_bfd_link_hash_table_create
 568 #define bfd_elf32_bfd_link_hash_table_free \
 569                                 m68hc11_elf_bfd_link_hash_table_free
 570 #define bfd_elf32_bfd_merge_private_bfd_data \
 571                                         _bfd_m68hc11_elf_merge_private_bfd_data
 572 #define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
 573 #define bfd_elf32_bfd_print_private_bfd_data \
 574                                         _bfd_m68hc11_elf_print_private_bfd_data
 575
 576 #include "elf32-target.h"