bfd/elf32-cris.c

   1 /* CRIS-specific support for 32-bit ELF.
   2    Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   3    Free Software Foundation, Inc.
   4    Contributed by Axis Communications AB.
   5    Written by Hans-Peter Nilsson, based on elf32-fr30.c
   6    PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
   7
   8    This file is part of BFD, the Binary File Descriptor library.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  23    MA 02110-1301, USA.  */
  24
  25 #include "sysdep.h"
  26 #include "bfd.h"
  27 #include "libbfd.h"
  28 #include "elf-bfd.h"
  29 #include "elf/cris.h"
  30 #include <limits.h>
  31
  32 /* Forward declarations.  */
  33 static reloc_howto_type * cris_reloc_type_lookup
  34   PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
  35
  36 static void cris_info_to_howto_rela
  37   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
  38
  39 static bfd_reloc_status_type cris_elf_pcrel_reloc
  40   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  41
  42 static bfd_boolean cris_elf_grok_prstatus
  43   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  44
  45 static bfd_boolean cris_elf_grok_psinfo
  46   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  47
  48 static bfd_boolean cris_elf_relocate_section
  49   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  50            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  51
  52 static bfd_reloc_status_type cris_final_link_relocate
  53   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
  54            Elf_Internal_Rela *, bfd_vma));
  55
  56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
  57
  58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
  59
  60 static bfd_boolean cris_elf_set_mach_from_flags
  61   PARAMS ((bfd *, unsigned long int));
  62
  63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
  64
  65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
  66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
  67
  68 struct elf_cris_link_hash_entry;
  69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
  70   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  71 static bfd_boolean elf_cris_discard_excess_program_dynamics
  72   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  73 static bfd_boolean elf_cris_adjust_gotplt_to_got
  74   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  75 static bfd_boolean elf_cris_try_fold_plt_to_got
  76   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
  78   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
  79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
  80   PARAMS ((bfd *));
  81 static bfd_boolean elf_cris_adjust_dynamic_symbol
  82   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
  83 static bfd_boolean cris_elf_check_relocs
  84   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  85            const Elf_Internal_Rela *));
  86
  87 static bfd_boolean elf_cris_size_dynamic_sections
  88   PARAMS ((bfd *, struct bfd_link_info *));
  89 static bfd_boolean elf_cris_finish_dynamic_symbol
  90   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  91            Elf_Internal_Sym *));
  92 static bfd_boolean elf_cris_finish_dynamic_sections
  93   PARAMS ((bfd *, struct bfd_link_info *));
  94 static void elf_cris_hide_symbol
  95   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
  96 static enum elf_reloc_type_class elf_cris_reloc_type_class
  97   PARAMS ((const Elf_Internal_Rela *));
  98
  99 static reloc_howto_type cris_elf_howto_table [] =
 100 {
 101   /* This reloc does nothing.  */
 102   HOWTO (R_CRIS_NONE,           /* type */
 103          0,                     /* rightshift */
 104          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 105          32,                    /* bitsize */
 106          FALSE,                 /* pc_relative */
 107          0,                     /* bitpos */
 108          complain_overflow_bitfield, /* complain_on_overflow */
 109          bfd_elf_generic_reloc, /* special_function */
 110          "R_CRIS_NONE",         /* name */
 111          FALSE,                 /* partial_inplace */
 112          0,                     /* src_mask */
 113          0,                     /* dst_mask */
 114          FALSE),                /* pcrel_offset */
 115
 116   /* An 8 bit absolute relocation.  */
 117   HOWTO (R_CRIS_8,              /* type */
 118          0,                     /* rightshift */
 119          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 120          8,                     /* bitsize */
 121          FALSE,                 /* pc_relative */
 122          0,                     /* bitpos */
 123          complain_overflow_bitfield, /* complain_on_overflow */
 124          bfd_elf_generic_reloc, /* special_function */
 125          "R_CRIS_8",            /* name */
 126          FALSE,                 /* partial_inplace */
 127          0x0000,                /* src_mask */
 128          0x00ff,                /* dst_mask */
 129          FALSE),                /* pcrel_offset */
 130
 131   /* A 16 bit absolute relocation.  */
 132   HOWTO (R_CRIS_16,             /* type */
 133          0,                     /* rightshift */
 134          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 135          16,                    /* bitsize */
 136          FALSE,                 /* pc_relative */
 137          0,                     /* bitpos */
 138          complain_overflow_bitfield, /* complain_on_overflow */
 139          bfd_elf_generic_reloc, /* special_function */
 140          "R_CRIS_16",           /* name */
 141          FALSE,                 /* partial_inplace */
 142          0x00000000,            /* src_mask */
 143          0x0000ffff,            /* dst_mask */
 144          FALSE),                /* pcrel_offset */
 145
 146   /* A 32 bit absolute relocation.  */
 147   HOWTO (R_CRIS_32,             /* type */
 148          0,                     /* rightshift */
 149          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 150          32,                    /* bitsize */
 151          FALSE,                 /* pc_relative */
 152          0,                     /* bitpos */
 153          /* We don't want overflow complaints for 64-bit vma builds
 154             for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
 155             32-bit ELF) where sym=0xc0001234.
 156             Don't do this for the PIC relocs, as we don't expect to
 157             see them with large offsets.  */
 158          complain_overflow_dont, /* complain_on_overflow */
 159          bfd_elf_generic_reloc, /* special_function */
 160          "R_CRIS_32",           /* name */
 161          FALSE,                 /* partial_inplace */
 162          0x00000000,            /* src_mask */
 163          0xffffffff,            /* dst_mask */
 164          FALSE),                /* pcrel_offset */
 165
 166   /* An 8 bit PC-relative relocation.  */
 167   HOWTO (R_CRIS_8_PCREL,        /* type */
 168          0,                     /* rightshift */
 169          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 170          8,                     /* bitsize */
 171          TRUE,                  /* pc_relative */
 172          0,                     /* bitpos */
 173          complain_overflow_bitfield, /* complain_on_overflow */
 174          cris_elf_pcrel_reloc,  /* special_function */
 175          "R_CRIS_8_PCREL",      /* name */
 176          FALSE,                 /* partial_inplace */
 177          0x0000,                /* src_mask */
 178          0x00ff,                /* dst_mask */
 179          TRUE),                 /* pcrel_offset */
 180
 181   /* A 16 bit PC-relative relocation.  */
 182   HOWTO (R_CRIS_16_PCREL,       /* type */
 183          0,                     /* rightshift */
 184          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 185          16,                    /* bitsize */
 186          TRUE,                  /* pc_relative */
 187          0,                     /* bitpos */
 188          complain_overflow_bitfield, /* complain_on_overflow */
 189          cris_elf_pcrel_reloc,  /* special_function */
 190          "R_CRIS_16_PCREL",     /* name */
 191          FALSE,                 /* partial_inplace */
 192          0x00000000,            /* src_mask */
 193          0x0000ffff,            /* dst_mask */
 194          TRUE),                 /* pcrel_offset */
 195
 196   /* A 32 bit PC-relative relocation.  */
 197   HOWTO (R_CRIS_32_PCREL,       /* type */
 198          0,                     /* rightshift */
 199          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 200          32,                    /* bitsize */
 201          TRUE,                  /* pc_relative */
 202          0,                     /* bitpos */
 203          complain_overflow_bitfield, /* complain_on_overflow */
 204          cris_elf_pcrel_reloc,  /* special_function */
 205          "R_CRIS_32_PCREL",     /* name */
 206          FALSE,                 /* partial_inplace */
 207          0x00000000,            /* src_mask */
 208          0xffffffff,            /* dst_mask */
 209          TRUE),                 /* pcrel_offset */
 210
 211   /* GNU extension to record C++ vtable hierarchy.  */
 212   HOWTO (R_CRIS_GNU_VTINHERIT,  /* type */
 213          0,                     /* rightshift */
 214          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 215          0,                     /* bitsize */
 216          FALSE,                 /* pc_relative */
 217          0,                     /* bitpos */
 218          complain_overflow_dont, /* complain_on_overflow */
 219          NULL,                  /* special_function */
 220          "R_CRIS_GNU_VTINHERIT", /* name */
 221          FALSE,                 /* partial_inplace */
 222          0,                     /* src_mask */
 223          0,                     /* dst_mask */
 224          FALSE),                /* pcrel_offset */
 225
 226   /* GNU extension to record C++ vtable member usage.  */
 227   HOWTO (R_CRIS_GNU_VTENTRY,    /* type */
 228          0,                     /* rightshift */
 229          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 230          0,                     /* bitsize */
 231          FALSE,                 /* pc_relative */
 232          0,                     /* bitpos */
 233          complain_overflow_dont, /* complain_on_overflow */
 234          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 235          "R_CRIS_GNU_VTENTRY",   /* name */
 236          FALSE,                 /* partial_inplace */
 237          0,                     /* src_mask */
 238          0,                     /* dst_mask */
 239          FALSE),                /* pcrel_offset */
 240
 241   /* This is used only by the dynamic linker.  The symbol should exist
 242      both in the object being run and in some shared library.  The
 243      dynamic linker copies the data addressed by the symbol from the
 244      shared library into the object, because the object being
 245      run has to have the data at some particular address.  */
 246   HOWTO (R_CRIS_COPY,           /* type */
 247          0,                     /* rightshift */
 248          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 249          32,                    /* bitsize */
 250          FALSE,                 /* pc_relative */
 251          0,                     /* bitpos */
 252          complain_overflow_bitfield, /* complain_on_overflow */
 253          bfd_elf_generic_reloc, /* special_function */
 254          "R_CRIS_COPY",         /* name */
 255          FALSE,                 /* partial_inplace */
 256          0,                     /* src_mask */
 257          0,                     /* dst_mask */
 258          FALSE),                /* pcrel_offset */
 259
 260   /* Like R_CRIS_32, but used when setting global offset table entries.  */
 261   HOWTO (R_CRIS_GLOB_DAT,       /* type */
 262          0,                     /* rightshift */
 263          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 264          32,                    /* bitsize */
 265          FALSE,                 /* pc_relative */
 266          0,                     /* bitpos */
 267          complain_overflow_bitfield, /* complain_on_overflow */
 268          bfd_elf_generic_reloc, /* special_function */
 269          "R_CRIS_GLOB_DAT",     /* name */
 270          FALSE,                 /* partial_inplace */
 271          0,                     /* src_mask */
 272          0xffffffff,            /* dst_mask */
 273          FALSE),                /* pcrel_offset */
 274
 275   /* Marks a procedure linkage table entry for a symbol.  */
 276   HOWTO (R_CRIS_JUMP_SLOT,      /* type */
 277          0,                     /* rightshift */
 278          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 279          32,                    /* bitsize */
 280          FALSE,                 /* pc_relative */
 281          0,                     /* bitpos */
 282          complain_overflow_bitfield, /* complain_on_overflow */
 283          bfd_elf_generic_reloc, /* special_function */
 284          "R_CRIS_JUMP_SLOT",    /* name */
 285          FALSE,                 /* partial_inplace */
 286          0,                     /* src_mask */
 287          0,                     /* dst_mask */
 288          FALSE),                /* pcrel_offset */
 289
 290   /* Used only by the dynamic linker.  When the object is run, this
 291      longword is set to the load address of the object, plus the
 292      addend.  */
 293   HOWTO (R_CRIS_RELATIVE,       /* type */
 294          0,                     /* rightshift */
 295          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 296          32,                    /* bitsize */
 297          FALSE,                 /* pc_relative */
 298          0,                     /* bitpos */
 299          complain_overflow_bitfield, /* complain_on_overflow */
 300          bfd_elf_generic_reloc, /* special_function */
 301          "R_CRIS_RELATIVE",     /* name */
 302          FALSE,                 /* partial_inplace */
 303          0,                     /* src_mask */
 304          0xffffffff,            /* dst_mask */
 305          FALSE),                /* pcrel_offset */
 306
 307   /* Like R_CRIS_32, but referring to the GOT table entry for the symbol.  */
 308   HOWTO (R_CRIS_16_GOT,         /* type */
 309          0,                     /* rightshift */
 310          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 311          16,                    /* bitsize */
 312          FALSE,                 /* pc_relative */
 313          0,                     /* bitpos */
 314          complain_overflow_bitfield, /* complain_on_overflow */
 315          bfd_elf_generic_reloc, /* special_function */
 316          "R_CRIS_16_GOT",       /* name */
 317          FALSE,                 /* partial_inplace */
 318          0,                     /* src_mask */
 319          0xffff,                /* dst_mask */
 320          FALSE),                /* pcrel_offset */
 321
 322   HOWTO (R_CRIS_32_GOT,         /* type */
 323          0,                     /* rightshift */
 324          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 325          32,                    /* bitsize */
 326          FALSE,                 /* pc_relative */
 327          0,                     /* bitpos */
 328          complain_overflow_bitfield, /* complain_on_overflow */
 329          bfd_elf_generic_reloc, /* special_function */
 330          "R_CRIS_32_GOT",       /* name */
 331          FALSE,                 /* partial_inplace */
 332          0,                     /* src_mask */
 333          0xffffffff,            /* dst_mask */
 334          FALSE),                /* pcrel_offset */
 335
 336   /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
 337      the GOT table for the symbol.  */
 338   HOWTO (R_CRIS_16_GOTPLT,      /* type */
 339          0,                     /* rightshift */
 340          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 341          16,                    /* bitsize */
 342          FALSE,                 /* pc_relative */
 343          0,                     /* bitpos */
 344          complain_overflow_bitfield, /* complain_on_overflow */
 345          bfd_elf_generic_reloc, /* special_function */
 346          "R_CRIS_16_GOTPLT",    /* name */
 347          FALSE,                 /* partial_inplace */
 348          0,                     /* src_mask */
 349          0xffff,                /* dst_mask */
 350          FALSE),                /* pcrel_offset */
 351
 352   HOWTO (R_CRIS_32_GOTPLT,      /* type */
 353          0,                     /* rightshift */
 354          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 355          32,                    /* bitsize */
 356          FALSE,                 /* pc_relative */
 357          0,                     /* bitpos */
 358          complain_overflow_bitfield, /* complain_on_overflow */
 359          bfd_elf_generic_reloc, /* special_function */
 360          "R_CRIS_32_GOTPLT",    /* name */
 361          FALSE,                 /* partial_inplace */
 362          0,                     /* src_mask */
 363          0xffffffff,            /* dst_mask */
 364          FALSE),                /* pcrel_offset */
 365
 366   /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
 367      be necessary.  */
 368   HOWTO (R_CRIS_32_GOTREL,      /* type */
 369          0,                     /* rightshift */
 370          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 371          32,                    /* bitsize */
 372          FALSE,                 /* pc_relative */
 373          0,                     /* bitpos */
 374          complain_overflow_bitfield, /* complain_on_overflow */
 375          bfd_elf_generic_reloc, /* special_function */
 376          "R_CRIS_32_GOTREL",    /* name */
 377          FALSE,                 /* partial_inplace */
 378          0,                     /* src_mask */
 379          0xffffffff,            /* dst_mask */
 380          FALSE),                /* pcrel_offset */
 381
 382   /* A 32-bit offset from GOT to entry for this symbol in PLT and request
 383      to create PLT entry for symbol.  */
 384   HOWTO (R_CRIS_32_PLT_GOTREL,  /* type */
 385          0,                     /* rightshift */
 386          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 387          32,                    /* bitsize */
 388          FALSE,                 /* pc_relative */
 389          0,                     /* bitpos */
 390          complain_overflow_bitfield, /* complain_on_overflow */
 391          bfd_elf_generic_reloc, /* special_function */
 392          "R_CRIS_32_PLT_GOTREL", /* name */
 393          FALSE,                 /* partial_inplace */
 394          0,                     /* src_mask */
 395          0xffffffff,            /* dst_mask */
 396          FALSE),                /* pcrel_offset */
 397
 398   /* A 32-bit offset from PC (location after the relocation) + addend to
 399      entry for this symbol in PLT and request to create PLT entry for
 400      symbol.  */
 401   HOWTO (R_CRIS_32_PLT_PCREL,   /* type */
 402          0,                     /* rightshift */
 403          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 404          32,                    /* bitsize */
 405          TRUE,                  /* pc_relative */
 406          0,                     /* bitpos */
 407          complain_overflow_bitfield, /* complain_on_overflow */
 408          cris_elf_pcrel_reloc,  /* special_function */
 409          "R_CRIS_32_PLT_PCREL", /* name */
 410          FALSE,                 /* partial_inplace */
 411          0,                     /* src_mask */
 412          0xffffffff,            /* dst_mask */
 413          TRUE),                 /* pcrel_offset */
 414
 415   /* We don't handle these in any special manner and cross-format
 416      linking is not supported; just recognize them enough to pass them
 417      around.  FIXME: do the same for most PIC relocs and add sanity
 418      tests to actually refuse gracefully to handle these and PIC
 419      relocs for cross-format linking.  */
 420 #define TLSHOWTO32(name) \
 421  HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
 422         bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
 423 #define TLSHOWTO16X(name, X)         \
 424  HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
 425         bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
 426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
 427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
 428
 429   TLSHOWTO32 (R_CRIS_32_GOT_GD),
 430   TLSHOWTO16 (R_CRIS_16_GOT_GD),
 431   TLSHOWTO32 (R_CRIS_32_GD),
 432   TLSHOWTO32 (R_CRIS_DTP),
 433   TLSHOWTO32 (R_CRIS_32_DTPREL),
 434   TLSHOWTO16S (R_CRIS_16_DTPREL),
 435   TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
 436   TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
 437   TLSHOWTO32 (R_CRIS_32_TPREL),
 438   TLSHOWTO16S (R_CRIS_16_TPREL),
 439   TLSHOWTO32 (R_CRIS_DTPMOD),
 440   TLSHOWTO32 (R_CRIS_32_IE)
 441 };
 442 \f
 443 /* Map BFD reloc types to CRIS ELF reloc types.  */
 444
 445 struct cris_reloc_map
 446 {
 447   bfd_reloc_code_real_type bfd_reloc_val;
 448   unsigned int cris_reloc_val;
 449 };
 450
 451 static const struct cris_reloc_map cris_reloc_map [] =
 452 {
 453   { BFD_RELOC_NONE,             R_CRIS_NONE },
 454   { BFD_RELOC_8,                R_CRIS_8 },
 455   { BFD_RELOC_16,               R_CRIS_16 },
 456   { BFD_RELOC_32,               R_CRIS_32 },
 457   { BFD_RELOC_8_PCREL,          R_CRIS_8_PCREL },
 458   { BFD_RELOC_16_PCREL,         R_CRIS_16_PCREL },
 459   { BFD_RELOC_32_PCREL,         R_CRIS_32_PCREL },
 460   { BFD_RELOC_VTABLE_INHERIT,   R_CRIS_GNU_VTINHERIT },
 461   { BFD_RELOC_VTABLE_ENTRY,     R_CRIS_GNU_VTENTRY },
 462   { BFD_RELOC_CRIS_COPY,        R_CRIS_COPY },
 463   { BFD_RELOC_CRIS_GLOB_DAT,    R_CRIS_GLOB_DAT },
 464   { BFD_RELOC_CRIS_JUMP_SLOT,   R_CRIS_JUMP_SLOT },
 465   { BFD_RELOC_CRIS_RELATIVE,    R_CRIS_RELATIVE },
 466   { BFD_RELOC_CRIS_16_GOT,      R_CRIS_16_GOT },
 467   { BFD_RELOC_CRIS_32_GOT,      R_CRIS_32_GOT },
 468   { BFD_RELOC_CRIS_16_GOTPLT,   R_CRIS_16_GOTPLT },
 469   { BFD_RELOC_CRIS_32_GOTPLT,   R_CRIS_32_GOTPLT },
 470   { BFD_RELOC_CRIS_32_GOTREL,   R_CRIS_32_GOTREL },
 471   { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
 472   { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
 473   { BFD_RELOC_CRIS_32_GOT_GD,   R_CRIS_32_GOT_GD },
 474   { BFD_RELOC_CRIS_16_GOT_GD,   R_CRIS_16_GOT_GD },
 475   { BFD_RELOC_CRIS_32_GD,       R_CRIS_32_GD },
 476   { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
 477   { BFD_RELOC_CRIS_32_DTPREL,   R_CRIS_32_DTPREL },
 478   { BFD_RELOC_CRIS_16_DTPREL,   R_CRIS_16_DTPREL },
 479   { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
 480   { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
 481   { BFD_RELOC_CRIS_32_TPREL,    R_CRIS_32_TPREL },
 482   { BFD_RELOC_CRIS_16_TPREL,    R_CRIS_16_TPREL },
 483   { BFD_RELOC_CRIS_DTPMOD,      R_CRIS_DTPMOD },
 484   { BFD_RELOC_CRIS_32_IE,       R_CRIS_32_IE }
 485 };
 486
 487 static reloc_howto_type *
 488 cris_reloc_type_lookup (abfd, code)
 489      bfd * abfd ATTRIBUTE_UNUSED;
 490      bfd_reloc_code_real_type code;
 491 {
 492   unsigned int i;
 493
 494   for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
 495     if (cris_reloc_map [i].bfd_reloc_val == code)
 496       return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
 497
 498   return NULL;
 499 }
 500
 501 static reloc_howto_type *
 502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
 503 {
 504   unsigned int i;
 505
 506   for (i = 0;
 507        i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
 508        i++)
 509     if (cris_elf_howto_table[i].name != NULL
 510         && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
 511       return &cris_elf_howto_table[i];
 512
 513   return NULL;
 514 }
 515
 516 /* Set the howto pointer for an CRIS ELF reloc.  */
 517
 518 static void
 519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
 520      bfd * abfd ATTRIBUTE_UNUSED;
 521      arelent * cache_ptr;
 522      Elf_Internal_Rela * dst;
 523 {
 524   enum elf_cris_reloc_type r_type;
 525
 526   r_type = ELF32_R_TYPE (dst->r_info);
 527   BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
 528   cache_ptr->howto = & cris_elf_howto_table [r_type];
 529 }
 530
 531 bfd_reloc_status_type
 532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
 533                       output_bfd, error_message)
 534      bfd *abfd ATTRIBUTE_UNUSED;
 535      arelent *reloc_entry;
 536      asymbol *symbol;
 537      PTR data ATTRIBUTE_UNUSED;
 538      asection *input_section;
 539      bfd *output_bfd;
 540      char **error_message ATTRIBUTE_UNUSED;
 541 {
 542   /* By default (using only bfd_elf_generic_reloc when linking to
 543      non-ELF formats) PC-relative relocs are relative to the beginning
 544      of the reloc.  CRIS PC-relative relocs are relative to the position
 545      *after* the reloc because that's what pre-CRISv32 PC points to
 546      after reading an insn field with that reloc.  (For CRISv32, PC is
 547      actually relative to the start of the insn, but we keep the old
 548      definition.)  Still, we use as much generic machinery as we can.
 549
 550      Only adjust when doing a final link.  */
 551   if (output_bfd == (bfd *) NULL)
 552     reloc_entry->addend -= 1 << reloc_entry->howto->size;
 553
 554   return
 555     bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
 556                            input_section, output_bfd, error_message);
 557 }
 558 \f
 559 /* Support for core dump NOTE sections.
 560    The slightly unintuitive code layout is an attempt to keep at least
 561    some similarities with other ports, hoping to simplify general
 562    changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart.  */
 563
 564 static bfd_boolean
 565 cris_elf_grok_prstatus (abfd, note)
 566      bfd *abfd;
 567      Elf_Internal_Note *note;
 568 {
 569   int offset;
 570   size_t size;
 571
 572   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 573     switch (note->descsz)
 574       {
 575       default:
 576         return FALSE;
 577
 578       case 202:         /* Linux/CRISv32 */
 579         /* pr_cursig */
 580         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 581
 582         /* pr_pid */
 583         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 584
 585         /* pr_reg */
 586         offset = 70;
 587         size = 128;
 588
 589         break;
 590       }
 591   else
 592     switch (note->descsz)
 593       {
 594       default:
 595         return FALSE;
 596
 597       case 214:         /* Linux/CRIS */
 598         /* pr_cursig */
 599         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 600
 601         /* pr_pid */
 602         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 603
 604         /* pr_reg */
 605         offset = 70;
 606         size = 140;
 607
 608         break;
 609       }
 610
 611   /* Make a ".reg/999" section.  */
 612   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
 613                                           size, note->descpos + offset);
 614 }
 615
 616 static bfd_boolean
 617 cris_elf_grok_psinfo (abfd, note)
 618      bfd *abfd;
 619      Elf_Internal_Note *note;
 620 {
 621   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 622     switch (note->descsz)
 623       {
 624       default:
 625         return FALSE;
 626
 627       case 124:         /* Linux/CRISv32 elf_prpsinfo */
 628         elf_tdata (abfd)->core_program
 629           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 630         elf_tdata (abfd)->core_command
 631           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 632       }
 633   else
 634     switch (note->descsz)
 635       {
 636       default:
 637         return FALSE;
 638
 639       case 124:         /* Linux/CRIS elf_prpsinfo */
 640         elf_tdata (abfd)->core_program
 641           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 642         elf_tdata (abfd)->core_command
 643           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 644       }
 645
 646   /* Note that for some reason, a spurious space is tacked
 647      onto the end of the args in some (at least one anyway)
 648      implementations, so strip it off if it exists.  */
 649
 650   {
 651     char *command = elf_tdata (abfd)->core_command;
 652     int n = strlen (command);
 653
 654     if (0 < n && command[n - 1] == ' ')
 655       command[n - 1] = '\0';
 656   }
 657
 658   return TRUE;
 659 }
 660 \f
 661 /* The name of the dynamic interpreter.  This is put in the .interp
 662    section.  */
 663
 664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
 665
 666 /* The size in bytes of an entry in the procedure linkage table.  */
 667
 668 #define PLT_ENTRY_SIZE 20
 669 #define PLT_ENTRY_SIZE_V32 26
 670
 671 /* The first entry in an absolute procedure linkage table looks like this.  */
 672
 673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
 674 {
 675   0xfc, 0xe1,
 676   0x7e, 0x7e,   /* push mof.  */
 677   0x7f, 0x0d,   /*  (dip [pc+]) */
 678   0, 0, 0, 0,   /*  Replaced with address of .got + 4.  */
 679   0x30, 0x7a,   /* move [...],mof */
 680   0x7f, 0x0d,   /*  (dip [pc+]) */
 681   0, 0, 0, 0,   /*  Replaced with address of .got + 8.  */
 682   0x30, 0x09    /* jump [...] */
 683 };
 684
 685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 686 {
 687   0x84, 0xe2,   /* subq 4,$sp */
 688   0x6f, 0xfe,   /* move.d 0,$acr */
 689   0, 0, 0, 0,   /*  Replaced by address of .got + 4.  */
 690   0x7e, 0x7a,   /* move $mof,[$sp] */
 691   0x3f, 0x7a,   /* move [$acr],$mof */
 692   0x04, 0xf2,   /* addq 4,acr */
 693   0x6f, 0xfa,   /* move.d [$acr],$acr */
 694   0xbf, 0x09,   /* jump $acr */
 695   0xb0, 0x05,   /* nop */
 696   0, 0          /*  Pad out to 26 bytes.  */
 697 };
 698
 699 /* Subsequent entries in an absolute procedure linkage table look like
 700    this.  */
 701
 702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
 703 {
 704   0x7f, 0x0d,   /*  (dip [pc+]) */
 705   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 706   0x30, 0x09,   /* jump [...] */
 707   0x3f,  0x7e,  /* move [pc+],mof */
 708   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 709   0x2f, 0xfe,   /* add.d [pc+],pc */
 710   0xec, 0xff,
 711   0xff, 0xff    /*  Replaced with offset to start of .plt.  */
 712 };
 713
 714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 715 {
 716   0x6f, 0xfe,   /* move.d 0,$acr */
 717   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 718   0x6f, 0xfa,   /* move.d [$acr],$acr */
 719   0xbf, 0x09,   /* jump $acr */
 720   0xb0, 0x05,   /* nop */
 721   0x3f, 0x7e,   /* move 0,mof */
 722   0, 0, 0, 0,   /*  Replaced with offset into relocation table. */
 723   0xbf, 0x0e,   /* ba start_of_plt0_entry */
 724   0, 0, 0, 0,   /*  Replaced with offset to plt0 entry.  */
 725   0xb0, 0x05    /* nop */
 726 };
 727
 728 /* The first entry in a PIC procedure linkage table looks like this.  */
 729
 730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
 731 {
 732   0xfc, 0xe1, 0x7e, 0x7e,       /* push mof */
 733   0x04, 0x01, 0x30, 0x7a,       /* move [r0+4],mof */
 734   0x08, 0x01, 0x30, 0x09,       /* jump [r0+8] */
 735   0, 0, 0, 0, 0, 0, 0, 0,       /*  Pad out to 20 bytes.  */
 736 };
 737
 738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 739 {
 740   0x84, 0xe2,   /* subq 4,$sp */
 741   0x04, 0x01,   /* addoq 4,$r0,$acr */
 742   0x7e, 0x7a,   /* move $mof,[$sp] */
 743   0x3f, 0x7a,   /* move [$acr],$mof */
 744   0x04, 0xf2,   /* addq 4,$acr */
 745   0x6f, 0xfa,   /* move.d [$acr],$acr */
 746   0xbf, 0x09,   /* jump $acr */
 747   0xb0, 0x05,   /* nop */
 748   0, 0,         /*  Pad out to 26 bytes.  */
 749   0, 0, 0, 0,
 750   0, 0, 0, 0
 751 };
 752
 753 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 754
 755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
 756 {
 757   0x6f, 0x0d,   /*  (bdap [pc+].d,r0) */
 758   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 759   0x30, 0x09,   /* jump [...] */
 760   0x3f, 0x7e,   /* move [pc+],mof */
 761   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 762   0x2f, 0xfe,   /* add.d [pc+],pc */
 763   0xec, 0xff,   /*  Replaced with offset to start of .plt.  */
 764   0xff, 0xff
 765 };
 766
 767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 768 {
 769   0x6f, 0x0d,   /* addo.d 0,$r0,$acr */
 770   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 771   0x6f, 0xfa,   /* move.d [$acr],$acr */
 772   0xbf, 0x09,   /* jump $acr */
 773   0xb0, 0x05,   /* nop */
 774   0x3f, 0x7e,   /* move relocoffs,$mof */
 775   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 776   0xbf, 0x0e,   /* ba start_of_plt */
 777   0, 0, 0, 0,   /*  Replaced with offset to start of .plt.  */
 778   0xb0, 0x05    /* nop */
 779 };
 780 \f
 781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
 782    (and most other PIC/shlib stuff).  Check that we don't drift away
 783    without reason.
 784
 785    The CRIS linker, like the m68k and i386 linkers (and probably the rest
 786    too) needs to keep track of the number of relocs that it decides to
 787    copy in check_relocs for each symbol.  This is so that it can discard
 788    PC relative relocs if it doesn't need them when linking with
 789    -Bsymbolic.  We store the information in a field extending the regular
 790    ELF linker hash table.  */
 791
 792 /* This structure keeps track of the number of PC relative relocs we have
 793    copied for a given symbol.  */
 794
 795 struct elf_cris_pcrel_relocs_copied
 796 {
 797   /* Next section.  */
 798   struct elf_cris_pcrel_relocs_copied *next;
 799
 800   /* A section in dynobj.  */
 801   asection *section;
 802
 803   /* Number of relocs copied in this section.  */
 804   bfd_size_type count;
 805
 806   /* Example of reloc being copied, for message.  */
 807   enum elf_cris_reloc_type r_type;
 808 };
 809
 810 /* CRIS ELF linker hash entry.  */
 811
 812 struct elf_cris_link_hash_entry
 813 {
 814   struct elf_link_hash_entry root;
 815
 816   /* Number of PC relative relocs copied for this symbol.  */
 817   struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
 818
 819   /* The GOTPLT references are CRIS-specific; the goal is to avoid having
 820      both a general GOT and a PLT-specific GOT entry for the same symbol,
 821      when it is referenced both as a function and as a function pointer.
 822
 823      Number of GOTPLT references for a function.  */
 824   bfd_signed_vma gotplt_refcount;
 825
 826   /* Actual GOTPLT index for this symbol, if applicable, or zero if not
 827      (zero is never used as an index).  FIXME: We should be able to fold
 828      this with gotplt_refcount in a union, like the got and plt unions in
 829      elf_link_hash_entry.  */
 830   bfd_size_type gotplt_offset;
 831
 832   /* The root.got.refcount is the sum of the regular reference counts
 833      (this) and those members below.  We have to keep a separate count
 834      to track when we've found the first (or last) reference to a
 835      regular got entry.  The offset is in root.got.offset.  */
 836   bfd_signed_vma reg_got_refcount;
 837
 838   /* Similar to the above, the number of reloc references to this
 839      symbols that need a R_CRIS_32_TPREL slot.  The offset is in
 840      root.got.offset, because this and .dtp_refcount can't validly
 841      happen when there's also a regular GOT entry; that's invalid
 842      input for which an error is emitted.  */
 843   bfd_signed_vma tprel_refcount;
 844
 845   /* Similar to the above, the number of reloc references to this
 846      symbols that need a R_CRIS_DTP slot.  The offset is in
 847      root.got.offset; plus 4 if .tprel_refcount > 0.  */
 848   bfd_signed_vma dtp_refcount;
 849 };
 850
 851 /* The local_got_refcounts and local_got_offsets are a multiple of
 852    LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
 853    refcount for GOT itself, see code), with the summary / group offset
 854    for local symbols located at offset N, reference counts for
 855    ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
 856    relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
 857    3*LSNUM.  */
 858
 859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
 860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
 861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
 862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
 863
 864 /* CRIS ELF linker hash table.  */
 865
 866 struct elf_cris_link_hash_table
 867 {
 868   struct elf_link_hash_table root;
 869
 870   /* We can't use the PLT offset and calculate to get the GOTPLT offset,
 871      since we try and avoid creating GOTPLT:s when there's already a GOT.
 872      Instead, we keep and update the next available index here.  */
 873   bfd_size_type next_gotplt_entry;
 874
 875   /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
 876      been seen for any input; if != 0, then the constant-offset
 877      R_CRIS_DTPMOD is needed for this DSO/executable.  This turns
 878      negative at relocation, so that we don't need an extra flag for
 879      when the reloc is output.  */
 880   bfd_signed_vma dtpmod_refcount;
 881 };
 882
 883 /* Traverse a CRIS ELF linker hash table.  */
 884
 885 #define elf_cris_link_hash_traverse(table, func, info)                  \
 886   (elf_link_hash_traverse                                               \
 887    (&(table)->root,                                                     \
 888     (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
 889     (info)))
 890
 891 /* Get the CRIS ELF linker hash table from a link_info structure.  */
 892
 893 #define elf_cris_hash_table(p) \
 894   ((struct elf_cris_link_hash_table *) (p)->hash)
 895
 896 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
 897    "parent class").  The .root reference is just a simple type
 898    check on the argument.  */
 899
 900 #define elf_cris_hash_entry(p) \
 901  ((struct elf_cris_link_hash_entry *) (&(p)->root))
 902
 903 /* Create an entry in a CRIS ELF linker hash table.  */
 904
 905 static struct bfd_hash_entry *
 906 elf_cris_link_hash_newfunc (entry, table, string)
 907      struct bfd_hash_entry *entry;
 908      struct bfd_hash_table *table;
 909      const char *string;
 910 {
 911   struct elf_cris_link_hash_entry *ret =
 912     (struct elf_cris_link_hash_entry *) entry;
 913
 914   /* Allocate the structure if it has not already been allocated by a
 915      subclass.  */
 916   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 917     ret = ((struct elf_cris_link_hash_entry *)
 918            bfd_hash_allocate (table,
 919                               sizeof (struct elf_cris_link_hash_entry)));
 920   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 921     return (struct bfd_hash_entry *) ret;
 922
 923   /* Call the allocation method of the superclass.  */
 924   ret = ((struct elf_cris_link_hash_entry *)
 925          _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
 926                                      table, string));
 927   if (ret != (struct elf_cris_link_hash_entry *) NULL)
 928     {
 929       ret->pcrel_relocs_copied = NULL;
 930       ret->gotplt_refcount = 0;
 931       ret->gotplt_offset = 0;
 932       ret->dtp_refcount = 0;
 933       ret->tprel_refcount = 0;
 934       ret->reg_got_refcount = 0;
 935     }
 936
 937   return (struct bfd_hash_entry *) ret;
 938 }
 939
 940 /* Create a CRIS ELF linker hash table.  */
 941
 942 static struct bfd_link_hash_table *
 943 elf_cris_link_hash_table_create (abfd)
 944      bfd *abfd;
 945 {
 946   struct elf_cris_link_hash_table *ret;
 947   bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
 948
 949   ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
 950   if (ret == (struct elf_cris_link_hash_table *) NULL)
 951     return NULL;
 952
 953   if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
 954                                       elf_cris_link_hash_newfunc,
 955                                       sizeof (struct elf_cris_link_hash_entry)))
 956     {
 957       free (ret);
 958       return NULL;
 959     }
 960
 961   /* Initialize to skip over the first three entries in the gotplt; they
 962      are used for run-time symbol evaluation.  */
 963   ret->next_gotplt_entry = 12;
 964
 965   /* We haven't seen any R_CRIS_nn_GOT_TPREL initially.  */
 966   ret->dtpmod_refcount = 0;
 967
 968   return &ret->root.root;
 969 }
 970 \f
 971 /* Perform a single relocation.  By default we use the standard BFD
 972    routines, with a few tweaks.  */
 973
 974 static bfd_reloc_status_type
 975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
 976                           relocation)
 977      reloc_howto_type *  howto;
 978      bfd *               input_bfd;
 979      asection *          input_section;
 980      bfd_byte *          contents;
 981      Elf_Internal_Rela * rel;
 982      bfd_vma             relocation;
 983 {
 984   bfd_reloc_status_type r;
 985   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
 986
 987   /* PC-relative relocations are relative to the position *after*
 988      the reloc.  Note that for R_CRIS_8_PCREL the adjustment is
 989      not a single byte, since PC must be 16-bit-aligned.  */
 990   switch (r_type)
 991     {
 992       /* Check that the 16-bit GOT relocs are positive.  */
 993     case R_CRIS_16_GOTPLT:
 994     case R_CRIS_16_GOT:
 995       if ((bfd_signed_vma) relocation < 0)
 996         return bfd_reloc_overflow;
 997       break;
 998
 999     case R_CRIS_32_PLT_PCREL:
1000     case R_CRIS_32_PCREL:
1001       relocation -= 2;
1002       /* Fall through.  */
1003     case R_CRIS_8_PCREL:
1004     case R_CRIS_16_PCREL:
1005       relocation -= 2;
1006       break;
1007
1008     default:
1009       break;
1010     }
1011
1012   r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013                                 contents, rel->r_offset,
1014                                 relocation, rel->r_addend);
1015   return r;
1016 }
1017 \f
1018
1019 /* The number of errors left before we stop outputting reloc-specific
1020    explanatory messages.  By coincidence, this works nicely together
1021    with the default number of messages you'll get from LD about
1022    "relocation truncated to fit" messages before you get an
1023    "additional relocation overflows omitted from the output".  */
1024 static int additional_relocation_error_msg_count = 10;
1025
1026 /* Relocate an CRIS ELF section.  See elf32-fr30.c, from where this was
1027    copied, for further comments.  */
1028
1029 static bfd_boolean
1030 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031                            contents, relocs, local_syms, local_sections)
1032      bfd *output_bfd ATTRIBUTE_UNUSED;
1033      struct bfd_link_info *info;
1034      bfd *input_bfd;
1035      asection *input_section;
1036      bfd_byte *contents;
1037      Elf_Internal_Rela *relocs;
1038      Elf_Internal_Sym *local_syms;
1039      asection **local_sections;
1040 {
1041   bfd *dynobj;
1042   Elf_Internal_Shdr *symtab_hdr;
1043   struct elf_link_hash_entry **sym_hashes;
1044   bfd_vma *local_got_offsets;
1045   asection *sgot;
1046   asection *splt;
1047   asection *sreloc;
1048   Elf_Internal_Rela *rel;
1049   Elf_Internal_Rela *relend;
1050   asection *srelgot;
1051
1052   dynobj = elf_hash_table (info)->dynobj;
1053   local_got_offsets = elf_local_got_offsets (input_bfd);
1054   symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055   sym_hashes = elf_sym_hashes (input_bfd);
1056   relend     = relocs + input_section->reloc_count;
1057
1058   sgot = NULL;
1059   splt = NULL;
1060   sreloc = NULL;
1061   srelgot = NULL;
1062
1063   if (dynobj != NULL)
1064     {
1065       splt = bfd_get_section_by_name (dynobj, ".plt");
1066       sgot = bfd_get_section_by_name (dynobj, ".got");
1067     }
1068
1069   for (rel = relocs; rel < relend; rel ++)
1070     {
1071       reloc_howto_type *howto;
1072       unsigned long r_symndx;
1073       Elf_Internal_Sym *sym;
1074       asection *sec;
1075       struct elf_link_hash_entry *h;
1076       bfd_vma relocation;
1077       bfd_reloc_status_type r;
1078       const char *symname = NULL;
1079       enum elf_cris_reloc_type r_type;
1080
1081       r_type = ELF32_R_TYPE (rel->r_info);
1082
1083       if (   r_type == R_CRIS_GNU_VTINHERIT
1084           || r_type == R_CRIS_GNU_VTENTRY)
1085         continue;
1086
1087       r_symndx = ELF32_R_SYM (rel->r_info);
1088       howto  = cris_elf_howto_table + r_type;
1089       h      = NULL;
1090       sym    = NULL;
1091       sec    = NULL;
1092
1093       if (r_symndx < symtab_hdr->sh_info)
1094         {
1095           sym = local_syms + r_symndx;
1096           sec = local_sections [r_symndx];
1097           relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1098
1099           symname = (bfd_elf_string_from_elf_section
1100                      (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101           if (symname == NULL)
1102             symname = bfd_section_name (input_bfd, sec);
1103         }
1104       else
1105         {
1106           bfd_boolean warned;
1107           bfd_boolean unresolved_reloc;
1108
1109           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110                                    r_symndx, symtab_hdr, sym_hashes,
1111                                    h, sec, relocation,
1112                                    unresolved_reloc, warned);
1113
1114           symname = h->root.root.string;
1115
1116           if (unresolved_reloc
1117               /* Perhaps we should detect the cases that
1118                  sec->output_section is expected to be NULL like i386 and
1119                  m68k, but apparently (and according to elfxx-ia64.c) all
1120                  valid cases are where the symbol is defined in a shared
1121                  object which we link dynamically against.  This includes
1122                  PLT relocs for which we've created a PLT entry and other
1123                  relocs for which we're prepared to create dynamic
1124                  relocations.
1125
1126                  For now, new situations cause us to just err when
1127                  sec->output_offset is NULL but the object with the symbol
1128                  is *not* dynamically linked against.  Thus this will
1129                  automatically remind us so we can see if there are other
1130                  valid cases we need to revisit.  */
1131               && (sec->owner->flags & DYNAMIC) != 0)
1132             relocation = 0;
1133
1134           else if (h->root.type == bfd_link_hash_defined
1135                    || h->root.type == bfd_link_hash_defweak)
1136             {
1137               /* Here follow the cases where the relocation value must
1138                  be zero (or when further handling is simplified when
1139                  zero).  I can't claim to understand the various
1140                  conditions and they weren't described in the files
1141                  where I copied them from (elf32-m68k.c and
1142                  elf32-i386.c), but let's mention examples of where
1143                  they happen.  FIXME: Perhaps define and use a
1144                  dynamic_symbol_p function like ia64.
1145
1146                  - When creating a shared library, we can have an
1147                  ordinary relocation for a symbol defined in a shared
1148                  library (perhaps the one we create).  We then make
1149                  the relocation value zero, as the value seen now will
1150                  be added into the relocation addend in this shared
1151                  library, but must be handled only at dynamic-link
1152                  time.  FIXME: Not sure this example covers the
1153                  h->elf_link_hash_flags test, though it's there in
1154                  other targets.  */
1155               if (info->shared
1156                   && ((! info->symbolic && h->dynindx != -1)
1157                       || !h->def_regular)
1158                   && (input_section->flags & SEC_ALLOC) != 0
1159                   && (r_type == R_CRIS_8
1160                       || r_type == R_CRIS_16
1161                       || r_type == R_CRIS_32
1162                       || r_type == R_CRIS_8_PCREL
1163                       || r_type == R_CRIS_16_PCREL
1164                       || r_type == R_CRIS_32_PCREL))
1165                 relocation = 0;
1166               else if (!info->relocatable && unresolved_reloc)
1167                 {
1168                   _bfd_error_handler
1169                     (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1170                      input_bfd,
1171                      input_section,
1172                      cris_elf_howto_table[r_type].name,
1173                      symname);
1174                   bfd_set_error (bfd_error_bad_value);
1175                   return FALSE;
1176                 }
1177             }
1178         }
1179
1180       if (sec != NULL && elf_discarded_section (sec))
1181         {
1182           /* For relocs against symbols from removed linkonce sections,
1183              or sections discarded by a linker script, we just want the
1184              section contents zeroed.  Avoid any special processing.  */
1185           _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186           rel->r_info = 0;
1187           rel->r_addend = 0;
1188           continue;
1189         }
1190
1191       if (info->relocatable)
1192         continue;
1193
1194       switch (r_type)
1195         {
1196         case R_CRIS_16_GOTPLT:
1197         case R_CRIS_32_GOTPLT:
1198           /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199              but we require a PLT, and the PLT handling will take care of
1200              filling in the PLT-specific GOT entry.  For the GOT offset,
1201              calculate it as we do when filling it in for the .got.plt
1202              section.  If we don't have a PLT, punt to GOT handling.  */
1203           if (h != NULL
1204               && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205             {
1206               asection *sgotplt
1207                 = bfd_get_section_by_name (dynobj, ".got.plt");
1208               bfd_vma got_offset;
1209
1210               BFD_ASSERT (h->dynindx != -1);
1211               BFD_ASSERT (sgotplt != NULL);
1212
1213               got_offset
1214                 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1215
1216               relocation = got_offset;
1217               break;
1218             }
1219
1220           /* We didn't make a PLT entry for this symbol.  Maybe everything is
1221              folded into the GOT.  Other than folding, this happens when
1222              statically linking PIC code, or when using -Bsymbolic.  Check
1223              that we instead have a GOT entry as done for us by
1224              elf_cris_adjust_dynamic_symbol, and drop through into the
1225              ordinary GOT cases.  This must not happen for the
1226              executable, because any reference it does to a function
1227              that is satisfied by a DSO must generate a PLT.  We assume
1228              these call-specific relocs don't address non-functions.  */
1229           if (h != NULL
1230               && (h->got.offset == (bfd_vma) -1
1231                   || (!info->shared
1232                       && !(h->def_regular
1233                            || (!h->def_dynamic
1234                                && h->root.type == bfd_link_hash_undefweak)))))
1235             {
1236               (*_bfd_error_handler)
1237                 ((h->got.offset == (bfd_vma) -1)
1238                  ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239                      " against symbol `%s'")
1240                  : _("%B, section %A: No PLT for relocation %s"
1241                      " against symbol `%s'"),
1242                  input_bfd,
1243                  input_section,
1244                  cris_elf_howto_table[r_type].name,
1245                  (symname != NULL && symname[0] != '\0'
1246                   ? symname : _("[whose name is lost]")));
1247
1248               /* FIXME: Perhaps blaming input is not the right thing to
1249                  do; this is probably an internal error.  But it is true
1250                  that we didn't like that particular input.  */
1251               bfd_set_error (bfd_error_bad_value);
1252               return FALSE;
1253             }
1254           /* Fall through.  */
1255
1256           /* The size of the actual relocation is not used here; we only
1257              fill in the GOT table here.  */
1258         case R_CRIS_16_GOT:
1259         case R_CRIS_32_GOT:
1260           {
1261             bfd_vma off;
1262
1263             /* Note that despite using RELA relocations, the .got contents
1264                is always filled in with the link-relative relocation
1265                value; the addend.  */
1266
1267             if (h != NULL)
1268               {
1269                 off = h->got.offset;
1270                 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272                 if (!elf_hash_table (info)->dynamic_sections_created
1273                     || (! info->shared
1274                         && (h->def_regular
1275                             || h->type == STT_FUNC
1276                             || h->needs_plt))
1277                     || (info->shared
1278                         && (info->symbolic || h->dynindx == -1)
1279                         && h->def_regular))
1280                   {
1281                     /* This wasn't checked above for ! info->shared, but
1282                        must hold there if we get here; the symbol must
1283                        be defined in the regular program or be undefweak
1284                        or be a function or otherwise need a PLT.  */
1285                     BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286                                 || info->shared
1287                                 || h->def_regular
1288                                 || h->type == STT_FUNC
1289                                 || h->needs_plt
1290                                 || h->root.type == bfd_link_hash_undefweak);
1291
1292                     /* This is actually a static link, or it is a
1293                        -Bsymbolic link and the symbol is defined locally,
1294                        or is undefweak, or the symbol was forced to be
1295                        local because of a version file, or we're not
1296                        creating a dynamic object.  We must initialize this
1297                        entry in the global offset table.  Since the offset
1298                        must always be a multiple of 4, we use the least
1299                        significant bit to record whether we have
1300                        initialized it already.
1301
1302                        If this GOT entry should be runtime-initialized, we
1303                        will create a .rela.got relocation entry to
1304                        initialize the value.  This is done in the
1305                        finish_dynamic_symbol routine.  */
1306                     if ((off & 1) != 0)
1307                       off &= ~1;
1308                     else
1309                       {
1310                         bfd_put_32 (output_bfd, relocation,
1311                                     sgot->contents + off);
1312                         h->got.offset |= 1;
1313                       }
1314                   }
1315               }
1316             else
1317               {
1318                 BFD_ASSERT (local_got_offsets != NULL
1319                             && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321                 off = local_got_offsets[r_symndx];
1322
1323                 /* The offset must always be a multiple of 4.  We use
1324                    the least significant bit to record whether we have
1325                    already generated the necessary reloc.  */
1326                 if ((off & 1) != 0)
1327                   off &= ~1;
1328                 else
1329                   {
1330                     bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332                     if (info->shared)
1333                       {
1334                         Elf_Internal_Rela outrel;
1335                         bfd_byte *loc;
1336
1337                         if (srelgot == NULL)
1338                           srelgot
1339                             = bfd_get_section_by_name (dynobj, ".rela.got");
1340                         BFD_ASSERT (srelgot != NULL);
1341
1342                         outrel.r_offset = (sgot->output_section->vma
1343                                            + sgot->output_offset
1344                                            + off);
1345                         outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346                         outrel.r_addend = relocation;
1347                         loc = srelgot->contents;
1348                         loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349                         bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350                       }
1351
1352                     local_got_offsets[r_symndx] |= 1;
1353                   }
1354               }
1355
1356             relocation = sgot->output_offset + off;
1357             if (rel->r_addend != 0)
1358               {
1359                 /* We can't do anything for a relocation which is against
1360                    a symbol *plus offset*.  GOT holds relocations for
1361                    symbols.  Make this an error; the compiler isn't
1362                    allowed to pass us these kinds of things.  */
1363                 if (h == NULL)
1364                   (*_bfd_error_handler)
1365                     (_("%B, section %A: relocation %s with non-zero addend %d"
1366                        " against local symbol"),
1367                      input_bfd,
1368                      input_section,
1369                      cris_elf_howto_table[r_type].name,
1370                      rel->r_addend);
1371                 else
1372                   (*_bfd_error_handler)
1373                     (_("%B, section %A: relocation %s with non-zero addend %d"
1374                        " against symbol `%s'"),
1375                      input_bfd,
1376                      input_section,
1377                      cris_elf_howto_table[r_type].name,
1378                      rel->r_addend,
1379                      symname[0] != '\0' ? symname : _("[whose name is lost]"));
1380
1381                 bfd_set_error (bfd_error_bad_value);
1382                 return FALSE;
1383               }
1384           }
1385           break;
1386
1387         case R_CRIS_32_GOTREL:
1388           /* This relocation must only be performed against local symbols.
1389              It's also ok when we link a program and the symbol is either
1390              defined in an ordinary (non-DSO) object or is undefined weak.  */
1391           if (h != NULL
1392               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393               && !(!info->shared
1394                    && (h->def_regular
1395                        || (!h->def_dynamic
1396                            && h->root.type == bfd_link_hash_undefweak))))
1397             {
1398               (*_bfd_error_handler)
1399                 (_("%B, section %A: relocation %s is"
1400                    " not allowed for global symbol: `%s'"),
1401                  input_bfd,
1402                  input_section,
1403                  cris_elf_howto_table[r_type].name,
1404                  symname);
1405               bfd_set_error (bfd_error_bad_value);
1406               return FALSE;
1407             }
1408
1409           /* This can happen if we get a link error with the input ELF
1410              variant mismatching the output variant.  Emit an error so
1411              it's noticed if it happens elsewhere.  */
1412           if (sgot == NULL)
1413             {
1414               (*_bfd_error_handler)
1415                 (_("%B, section %A: relocation %s with no GOT created"),
1416                  input_bfd,
1417                  input_section,
1418                  cris_elf_howto_table[r_type].name);
1419               bfd_set_error (bfd_error_bad_value);
1420               return FALSE;
1421             }
1422
1423           /* This relocation is like a PC-relative one, except the
1424              reference point is the location of GOT.  Note that
1425              sgot->output_offset is not involved in this calculation.  We
1426              always want the start of entire .got section, not the
1427              position after the reserved header.  */
1428           relocation -= sgot->output_section->vma;
1429           break;
1430
1431         case R_CRIS_32_PLT_PCREL:
1432           /* Relocation is to the entry for this symbol in the
1433              procedure linkage table.  */
1434
1435           /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436              without using the procedure linkage table.  */
1437           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438             break;
1439
1440           if (h->plt.offset == (bfd_vma) -1
1441               || splt == NULL)
1442             {
1443               /* We didn't make a PLT entry for this symbol.  This
1444                  happens when statically linking PIC code, or when
1445                  using -Bsymbolic.  */
1446               break;
1447             }
1448
1449           relocation = (splt->output_section->vma
1450                         + splt->output_offset
1451                         + h->plt.offset);
1452           break;
1453
1454         case R_CRIS_32_PLT_GOTREL:
1455           /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456              start of the .got section.  See also comment at
1457              R_CRIS_32_GOT.  */
1458           relocation -= sgot->output_section->vma;
1459
1460           /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461              without using the procedure linkage table.  */
1462           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463             break;
1464
1465           if (h->plt.offset == (bfd_vma) -1
1466               || splt == NULL)
1467             {
1468               /* We didn't make a PLT entry for this symbol.  This
1469                  happens when statically linking PIC code, or when
1470                  using -Bsymbolic.  */
1471               break;
1472             }
1473
1474           relocation = (splt->output_section->vma
1475                         + splt->output_offset
1476                         + h->plt.offset
1477                         - sgot->output_section->vma);
1478           break;
1479
1480         case R_CRIS_8_PCREL:
1481         case R_CRIS_16_PCREL:
1482         case R_CRIS_32_PCREL:
1483           /* If the symbol was local, we need no shlib-specific handling.  */
1484           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485               || h->dynindx == -1)
1486             break;
1487
1488           /* Fall through.  */
1489         case R_CRIS_8:
1490         case R_CRIS_16:
1491         case R_CRIS_32:
1492           if (info->shared
1493               && r_symndx != 0
1494               && (input_section->flags & SEC_ALLOC) != 0
1495               && ((r_type != R_CRIS_8_PCREL
1496                    && r_type != R_CRIS_16_PCREL
1497                    && r_type != R_CRIS_32_PCREL)
1498                   || (!info->symbolic
1499                       || (h != NULL && !h->def_regular))))
1500             {
1501               Elf_Internal_Rela outrel;
1502               bfd_byte *loc;
1503               bfd_boolean skip, relocate;
1504
1505               /* When generating a shared object, these relocations
1506                  are copied into the output file to be resolved at run
1507                  time.  */
1508
1509               if (sreloc == NULL)
1510                 {
1511                   sreloc = _bfd_elf_get_dynamic_reloc_section
1512                     (input_bfd, input_section, /*rela?*/ TRUE);
1513                   /* The section should have been created in cris_elf_check_relocs,
1514                      but that function will not be called for objects which fail in
1515                      cris_elf_merge_private_bfd_data.  */
1516                   if (sreloc == NULL)
1517                     {
1518                       bfd_set_error (bfd_error_bad_value);
1519                       return FALSE;
1520                     }
1521                 }
1522
1523               skip = FALSE;
1524               relocate = FALSE;
1525
1526               outrel.r_offset =
1527                 _bfd_elf_section_offset (output_bfd, info, input_section,
1528                                          rel->r_offset);
1529               if (outrel.r_offset == (bfd_vma) -1)
1530                 skip = TRUE;
1531               else if (outrel.r_offset == (bfd_vma) -2
1532                        /* For now, undefined weak symbols with non-default
1533                           visibility (yielding 0), like exception info for
1534                           discarded sections, will get a R_CRIS_NONE
1535                           relocation rather than no relocation, because we
1536                           notice too late that the symbol doesn't need a
1537                           relocation.  */
1538                        || (h != NULL
1539                            && h->root.type == bfd_link_hash_undefweak
1540                            && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1541                 skip = TRUE, relocate = TRUE;
1542               outrel.r_offset += (input_section->output_section->vma
1543                                   + input_section->output_offset);
1544
1545               if (skip)
1546                 memset (&outrel, 0, sizeof outrel);
1547               /* h->dynindx may be -1 if the symbol was marked to
1548                  become local.  */
1549               else if (h != NULL
1550                        && ((! info->symbolic && h->dynindx != -1)
1551                            || !h->def_regular))
1552                 {
1553                   BFD_ASSERT (h->dynindx != -1);
1554                   outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555                   outrel.r_addend = relocation + rel->r_addend;
1556                 }
1557               else
1558                 {
1559                   outrel.r_addend = relocation + rel->r_addend;
1560
1561                   if (r_type == R_CRIS_32)
1562                     {
1563                       relocate = TRUE;
1564                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1565                     }
1566                   else
1567                     {
1568                       long indx;
1569
1570                       if (bfd_is_abs_section (sec))
1571                         indx = 0;
1572                       else if (sec == NULL || sec->owner == NULL)
1573                         {
1574                           bfd_set_error (bfd_error_bad_value);
1575                           return FALSE;
1576                         }
1577                       else
1578                         {
1579                           asection *osec;
1580
1581                           /* We are turning this relocation into one
1582                              against a section symbol.  It would be
1583                              proper to subtract the symbol's value,
1584                              osec->vma, from the emitted reloc addend,
1585                              but ld.so expects buggy relocs.  */
1586                           osec = sec->output_section;
1587                           indx = elf_section_data (osec)->dynindx;
1588                           if (indx == 0)
1589                             {
1590                               struct elf_cris_link_hash_table *htab;
1591                               htab = elf_cris_hash_table (info);
1592                               osec = htab->root.text_index_section;
1593                               indx = elf_section_data (osec)->dynindx;
1594                             }
1595                           BFD_ASSERT (indx != 0);
1596                         }
1597
1598                       outrel.r_info = ELF32_R_INFO (indx, r_type);
1599                     }
1600                 }
1601
1602               loc = sreloc->contents;
1603               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604               bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1605
1606               /* This reloc will be computed at runtime, so there's no
1607                  need to do anything now, except for R_CRIS_32 relocations
1608                  that have been turned into R_CRIS_RELATIVE.  */
1609               if (!relocate)
1610                 continue;
1611             }
1612
1613           break;
1614
1615         case R_CRIS_16_DTPREL:
1616         case R_CRIS_32_DTPREL:
1617           /* This relocation must only be performed against local
1618              symbols.  It's also ok when we link a program and the
1619              symbol is defined in an ordinary (non-DSO) object (if
1620              it's undefined there, we've already seen an error).  */
1621           if (h != NULL
1622               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1623               && (info->shared
1624                   || (!h->def_regular
1625                       && h->root.type != bfd_link_hash_undefined)))
1626             {
1627               (*_bfd_error_handler)
1628                 ((h->root.type == bfd_link_hash_undefined)
1629                  /* We shouldn't get here for GCC-emitted code.  */
1630                  ? _("%B, section %A: relocation %s has an undefined"
1631                      " reference to `%s', perhaps a declaration mixup?")
1632                  : ("%B, section %A: relocation %s is"
1633                      " not allowed for `%s', a global symbol with default"
1634                      " visibility, perhaps a declaration mixup?"),
1635                  input_bfd,
1636                  input_section,
1637                  cris_elf_howto_table[r_type].name,
1638                  symname != NULL && symname[0] != '\0'
1639                  ? symname : _("[whose name is lost]"));
1640               bfd_set_error (bfd_error_bad_value);
1641               return FALSE;
1642             }
1643
1644           BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1645
1646           /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1647              already done so.  Note that we do this in .got.plt, not
1648              in .got, as .got.plt contains the first part, still the
1649              reloc is against .got, because the linker script directs
1650              (is required to direct) them both into .got.  */
1651           if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1652             {
1653               asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1654               BFD_ASSERT (sgotplt != NULL);
1655
1656               if (info->shared)
1657                 {
1658                   Elf_Internal_Rela outrel;
1659                   bfd_byte *loc;
1660
1661                   if (srelgot == NULL)
1662                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1663                   BFD_ASSERT (srelgot != NULL);
1664                   loc = srelgot->contents;
1665                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1666
1667                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1668                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1669                   outrel.r_offset = (sgotplt->output_section->vma
1670                                      + sgotplt->output_offset
1671                                      + 12);
1672                   outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1673                   outrel.r_addend = 0;
1674                   bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1675                 }
1676               else
1677                 {
1678                   /* For an executable, the GOT entry contents is known.  */
1679                   bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1680                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1681                 }
1682
1683               /* Reverse the sign to mark that we've emitted the
1684                  required GOT entry.  */
1685               elf_cris_hash_table (info)->dtpmod_refcount
1686                 = -elf_cris_hash_table (info)->dtpmod_refcount;
1687             }
1688
1689           /* The thread-based offset to the local symbol is the
1690              relocation.
1691              For the executable, TLS data begins at the thread pointer plus
1692              the negative size of the TLS data.  For a DSO, that's part of
1693              the module TLS offset.  */
1694           relocation -= elf_hash_table (info)->tls_sec == NULL
1695             ? 0 : (elf_hash_table (info)->tls_sec->vma
1696                    + (info->shared
1697                       ? 0 : elf_hash_table (info)->tls_size));
1698           break;
1699
1700         case R_CRIS_32_GD:
1701           if (info->shared)
1702             {
1703               bfd_set_error (bfd_error_invalid_operation);
1704
1705               /* We've already informed in cris_elf_check_relocs that
1706                  this is an error.  */
1707               return FALSE;
1708             }
1709           /* Fall through.  */
1710
1711         case R_CRIS_16_GOT_GD:
1712         case R_CRIS_32_GOT_GD:
1713           if (rel->r_addend != 0)
1714             {
1715               /* We can't do anything for a relocation which is against a
1716                  symbol *plus offset*.  The GOT holds relocations for
1717                  symbols.  Make this an error; the compiler isn't allowed
1718                  to pass us these kinds of things.  */
1719               (*_bfd_error_handler)
1720                 (_("%B, section %A: relocation %s with non-zero addend %d"
1721                    " against symbol `%s'"),
1722                  input_bfd,
1723                  input_section,
1724                  cris_elf_howto_table[r_type].name,
1725                  rel->r_addend,
1726                  symname[0] != '\0' ? symname : _("[whose name is lost]"));
1727
1728               bfd_set_error (bfd_error_bad_value);
1729               return FALSE;
1730             }
1731
1732           if (!info->shared && (h == NULL || h->def_regular))
1733             {
1734               /* Known contents of the GOT.  */
1735               bfd_vma off;
1736
1737               /* The symbol is defined in the program, so just write
1738                  (1, -prog_tls_size+known_tpoffset) into the GOT.  */
1739               relocation -= elf_hash_table (info)->tls_sec->vma;
1740               relocation -= elf_hash_table (info)->tls_size;
1741
1742               if (h != NULL)
1743                 {
1744                   off = elf_cris_hash_entry (h)->tprel_refcount > 0
1745                     ? h->got.offset + 4 : h->got.offset;
1746                 }
1747               else
1748                 {
1749                   off = local_got_offsets[r_symndx];
1750                   if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1751                     off += 4;
1752                 }
1753
1754               /* We use bit 1 of the offset as a flag for GOT entry with
1755                  the R_CRIS_DTP reloc, setting it when we've emitted the
1756                  GOT entry and reloc.  Bit 0 is used for R_CRIS_32_TPREL
1757                  relocs.  */
1758               if ((off & 2) == 0)
1759                 {
1760                   off &= ~3;
1761
1762                   if (h != NULL)
1763                     h->got.offset |= 2;
1764                   else
1765                     local_got_offsets[r_symndx] |= 2;
1766
1767                   bfd_put_32 (output_bfd, 1, sgot->contents + off);
1768                   bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1769                 }
1770               else
1771                 off &= ~3;
1772
1773               relocation = sgot->output_offset + off
1774                 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1775             }
1776           else
1777             {
1778               /* Not all parts of the GOT entry are known; emit a real
1779                  relocation.  */
1780               bfd_vma off;
1781
1782               if (h != NULL)
1783                 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1784                   ? h->got.offset + 4 : h->got.offset;
1785               else
1786                 {
1787                   off = local_got_offsets[r_symndx];
1788                   if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1789                     off += 4;
1790                 }
1791
1792               /* See above re bit 1 and bit 0 usage.  */
1793               if ((off & 2) == 0)
1794                 {
1795                   Elf_Internal_Rela outrel;
1796                   bfd_byte *loc;
1797
1798                   off &= ~3;
1799
1800                   if (h != NULL)
1801                     h->got.offset |= 2;
1802                   else
1803                     local_got_offsets[r_symndx] |= 2;
1804
1805                   /* Clear the target contents of the GOT (just as a
1806                      gesture; it's already cleared on allocation): this
1807                      relocation is not like the other dynrelocs.  */
1808                   bfd_put_32 (output_bfd, 0, sgot->contents + off);
1809                   bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1810
1811                   if (srelgot == NULL)
1812                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1813                   BFD_ASSERT (srelgot != NULL);
1814
1815                   if (h != NULL && h->dynindx != -1)
1816                     {
1817                       outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1818                       relocation = 0;
1819                     }
1820                   else
1821                     {
1822                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1823
1824                       /* NULL if we had an error.  */
1825                       relocation -= elf_hash_table (info)->tls_sec == NULL
1826                         ? 0 : elf_hash_table (info)->tls_sec->vma;
1827                     }
1828
1829                   outrel.r_offset = (sgot->output_section->vma
1830                                      + sgot->output_offset
1831                                      + off);
1832                   outrel.r_addend = relocation;
1833                   loc = srelgot->contents;
1834                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1835
1836                   /* NULL if we had an error.  */
1837                   if (srelgot->contents != NULL)
1838                     bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1839                 }
1840               else
1841                 off &= ~3;
1842
1843               relocation = sgot->output_offset + off
1844                 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1845             }
1846
1847           /* The GOT-relative offset to the GOT entry is the
1848              relocation, or for R_CRIS_32_GD, the actual address of
1849              the GOT entry.  */
1850           break;
1851
1852         case R_CRIS_32_IE:
1853           if (info->shared)
1854             {
1855               bfd_set_error (bfd_error_invalid_operation);
1856
1857               /* We've already informed in cris_elf_check_relocs that
1858                  this is an error.  */
1859               return FALSE;
1860             }
1861           /* Fall through.  */
1862
1863         case R_CRIS_32_GOT_TPREL:
1864         case R_CRIS_16_GOT_TPREL:
1865           if (rel->r_addend != 0)
1866             {
1867               /* We can't do anything for a relocation which is
1868                  against a symbol *plus offset*.  GOT holds
1869                  relocations for symbols.  Make this an error; the
1870                  compiler isn't allowed to pass us these kinds of
1871                  things.  */
1872               (*_bfd_error_handler)
1873                 (_("%B, section %A: relocation %s with non-zero addend %d"
1874                    " against symbol `%s'"),
1875                  input_bfd,
1876                  input_section,
1877                  cris_elf_howto_table[r_type].name,
1878                  rel->r_addend,
1879                  symname[0] != '\0' ? symname : _("[whose name is lost]"));
1880               bfd_set_error (bfd_error_bad_value);
1881               return FALSE;
1882             }
1883
1884           if (!info->shared && (h == NULL || h->def_regular))
1885             {
1886               /* Known contents of the GOT.  */
1887               bfd_vma off;
1888
1889               /* The symbol is defined in the program, so just write
1890                  the -prog_tls_size+known_tpoffset into the GOT.  */
1891               relocation -= elf_hash_table (info)->tls_sec->vma;
1892               relocation -= elf_hash_table (info)->tls_size;
1893
1894               if (h != NULL)
1895                 off = h->got.offset;
1896               else
1897                 off = local_got_offsets[r_symndx];
1898
1899               /* Bit 0 is used to mark whether we've emitted the required
1900                  entry (and if needed R_CRIS_32_TPREL reloc).  Bit 1
1901                  is used similarly for R_CRIS_DTP, see above.  */
1902               if ((off & 1) == 0)
1903                 {
1904                   off &= ~3;
1905
1906                   if (h != NULL)
1907                     h->got.offset |= 1;
1908                   else
1909                     local_got_offsets[r_symndx] |= 1;
1910
1911                   bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1912                 }
1913               else
1914                 off &= ~3;
1915
1916               relocation = sgot->output_offset + off
1917                 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1918             }
1919           else
1920             {
1921               /* Emit a real relocation.  */
1922               bfd_vma off;
1923
1924               if (h != NULL)
1925                 off = h->got.offset;
1926               else
1927                 off = local_got_offsets[r_symndx];
1928
1929               /* See above re usage of bit 0 and 1.  */
1930               if ((off & 1) == 0)
1931                 {
1932                   Elf_Internal_Rela outrel;
1933                   bfd_byte *loc;
1934
1935                   off &= ~3;
1936
1937                   if (h != NULL)
1938                     h->got.offset |= 1;
1939                   else
1940                     local_got_offsets[r_symndx] |= 1;
1941
1942                   if (srelgot == NULL)
1943                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1944                   BFD_ASSERT (srelgot != NULL);
1945
1946                   if (h != NULL && h->dynindx != -1)
1947                     {
1948                       outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1949                       relocation = 0;
1950                     }
1951                   else
1952                     {
1953                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1954
1955                       /* NULL if we had an error.  */
1956                       relocation -= elf_hash_table (info)->tls_sec == NULL
1957                         ? 0 : elf_hash_table (info)->tls_sec->vma;
1958                     }
1959
1960                   /* Just "define" the initial contents in some
1961                      semi-logical way.  */
1962                   bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1963
1964                   outrel.r_offset = (sgot->output_section->vma
1965                                      + sgot->output_offset
1966                                      + off);
1967                   outrel.r_addend = relocation;
1968                   loc = srelgot->contents;
1969                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1970                   /* NULL if we had an error.  */
1971                   if (srelgot->contents != NULL)
1972                     bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1973                 }
1974               else
1975                 off &= ~3;
1976
1977               relocation = sgot->output_offset + off
1978                 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1979             }
1980
1981           /* The GOT-relative offset to the GOT entry is the relocation,
1982              or for R_CRIS_32_GD, the actual address of the GOT entry.  */
1983           break;
1984
1985         case R_CRIS_16_TPREL:
1986         case R_CRIS_32_TPREL:
1987           /* This relocation must only be performed against symbols
1988              defined in an ordinary (non-DSO) object.  */
1989           if (info->shared)
1990             {
1991               bfd_set_error (bfd_error_invalid_operation);
1992
1993               /* We've already informed in cris_elf_check_relocs that
1994                  this is an error.  */
1995               return FALSE;
1996             }
1997
1998           if (h != NULL
1999               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2000               && !h->def_regular
2001               /* If it's undefined, then an error message has already
2002                  been emitted.  */
2003               && h->root.type != bfd_link_hash_undefined)
2004             {
2005               (*_bfd_error_handler)
2006                 (_("%B, section %A: relocation %s is"
2007                    " not allowed for symbol: `%s'"
2008                    " which is defined outside the program,"
2009                    " perhaps a declaration mixup?"),
2010                  input_bfd,
2011                  input_section,
2012                  cris_elf_howto_table[r_type].name,
2013                  symname);
2014               bfd_set_error (bfd_error_bad_value);
2015               return FALSE;
2016             }
2017
2018           /* NULL if we had an error.  */
2019           relocation -= elf_hash_table (info)->tls_sec == NULL
2020             ? 0
2021             : (elf_hash_table (info)->tls_sec->vma
2022                + elf_hash_table (info)->tls_size);
2023
2024           /* The TLS-relative offset is the relocation.  */
2025           break;
2026
2027         default:
2028           BFD_FAIL ();
2029           return FALSE;
2030         }
2031
2032       r = cris_final_link_relocate (howto, input_bfd, input_section,
2033                                      contents, rel, relocation);
2034
2035       if (r != bfd_reloc_ok)
2036         {
2037           const char * msg = (const char *) NULL;
2038
2039           switch (r)
2040             {
2041             case bfd_reloc_overflow:
2042               r = info->callbacks->reloc_overflow
2043                 (info, (h ? &h->root : NULL), symname, howto->name,
2044                  (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2045               if (additional_relocation_error_msg_count > 0)
2046                 {
2047                   additional_relocation_error_msg_count--;
2048                   switch (r_type)
2049                     {
2050                     case R_CRIS_16_GOTPLT:
2051                     case R_CRIS_16_GOT:
2052
2053                       /* Not just TLS is involved here, so we make
2054                          generation and message depend on -fPIC/-fpic
2055                          only.  */
2056                     case R_CRIS_16_GOT_TPREL:
2057                     case R_CRIS_16_GOT_GD:
2058                       (*_bfd_error_handler)
2059                         (_("(too many global variables for -fpic:"
2060                            " recompile with -fPIC)"));
2061                       break;
2062
2063                     case R_CRIS_16_TPREL:
2064                     case R_CRIS_16_DTPREL:
2065                       (*_bfd_error_handler)
2066                         (_("(thread-local data too big for -fpic or"
2067                            " -msmall-tls: recompile with -fPIC or"
2068                            " -mno-small-tls)"));
2069                       break;
2070
2071                       /* No known cause for overflow for other relocs.  */
2072                     default:
2073                       break;
2074                     }
2075                 }
2076               break;
2077
2078             case bfd_reloc_undefined:
2079               r = info->callbacks->undefined_symbol
2080                 (info, symname, input_bfd, input_section, rel->r_offset,
2081                  TRUE);
2082               break;
2083
2084             case bfd_reloc_outofrange:
2085               msg = _("internal error: out of range error");
2086               break;
2087
2088             case bfd_reloc_notsupported:
2089               msg = _("internal error: unsupported relocation error");
2090               break;
2091
2092             case bfd_reloc_dangerous:
2093               msg = _("internal error: dangerous relocation");
2094               break;
2095
2096             default:
2097               msg = _("internal error: unknown error");
2098               break;
2099             }
2100
2101           if (msg)
2102             r = info->callbacks->warning
2103               (info, msg, symname, input_bfd, input_section, rel->r_offset);
2104
2105           if (! r)
2106             return FALSE;
2107         }
2108     }
2109
2110   return TRUE;
2111 }
2112 \f
2113 /* Finish up dynamic symbol handling.  We set the contents of various
2114    dynamic sections here.  */
2115
2116 static bfd_boolean
2117 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2118      bfd *output_bfd;
2119      struct bfd_link_info *info;
2120      struct elf_link_hash_entry *h;
2121      Elf_Internal_Sym *sym;
2122 {
2123   bfd *dynobj;
2124
2125   /* Where in the plt entry to put values.  */
2126   int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2127
2128   /* What offset to add to the distance to the first PLT entry for the
2129      value at plt_off3.   */
2130   int plt_off3_value_bias = 4;
2131
2132   /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2133      for PIC and non-PIC for v32 and pre-v32).  */
2134   int plt_stub_offset = 8;
2135   int plt_entry_size = PLT_ENTRY_SIZE;
2136   const bfd_byte *plt_entry = elf_cris_plt_entry;
2137   const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2138
2139   /* Adjust the various PLT entry offsets.  */
2140   if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2141     {
2142       plt_off2 = 14;
2143       plt_off3 = 20;
2144       plt_off3_value_bias = -2;
2145       plt_stub_offset = 12;
2146       plt_entry_size = PLT_ENTRY_SIZE_V32;
2147       plt_entry = elf_cris_plt_entry_v32;
2148       plt_pic_entry = elf_cris_pic_plt_entry_v32;
2149     }
2150
2151   dynobj = elf_hash_table (info)->dynobj;
2152
2153   if (h->plt.offset != (bfd_vma) -1)
2154     {
2155       asection *splt;
2156       asection *sgotplt;
2157       asection *sgot;
2158       asection *srela;
2159       bfd_vma got_base;
2160
2161       bfd_vma gotplt_offset
2162         = elf_cris_hash_entry (h)->gotplt_offset;
2163       Elf_Internal_Rela rela;
2164       bfd_byte *loc;
2165       bfd_boolean has_gotplt = gotplt_offset != 0;
2166
2167       /* Get the index in the .rela.plt relocations for the .got.plt
2168          entry that corresponds to this symbol.
2169          We have to count backwards here, and the result is only valid
2170          as an index into .rela.plt.  We also have to undo the effect
2171          of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2172          .got.plt) for which gotplt_offset is adjusted, because while
2173          that entry goes into .got.plt, its relocation goes into
2174          .rela.got, not .rela.plt.  (It's not PLT-specific; not to be
2175          processed as part of the runtime lazy .rela.plt relocation).
2176          FIXME: There be literal constants here...  */
2177       bfd_vma rela_plt_index
2178         = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2179            ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2180
2181       /* Get the offset into the .got table of the entry that corresponds
2182          to this function.  Note that we embed knowledge that "incoming"
2183          .got goes after .got.plt in the output without padding (pointer
2184          aligned).  However, that knowledge is present in several other
2185          places too.  */
2186       bfd_vma got_offset
2187         = (has_gotplt
2188            ? gotplt_offset
2189            : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2190
2191       /* This symbol has an entry in the procedure linkage table.  Set it
2192          up.  */
2193
2194       BFD_ASSERT (h->dynindx != -1);
2195
2196       splt = bfd_get_section_by_name (dynobj, ".plt");
2197       sgot = bfd_get_section_by_name (dynobj, ".got");
2198       sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2199       srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2200       BFD_ASSERT (splt != NULL && sgotplt != NULL
2201                   && (! has_gotplt || srela != NULL));
2202
2203       got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2204
2205       /* Fill in the entry in the procedure linkage table.  */
2206       if (! info->shared)
2207         {
2208           memcpy (splt->contents + h->plt.offset, plt_entry,
2209                   plt_entry_size);
2210
2211           /* We need to enter the absolute address of the GOT entry here.  */
2212           bfd_put_32 (output_bfd, got_base + got_offset,
2213                       splt->contents + h->plt.offset + plt_off1);
2214         }
2215       else
2216         {
2217           memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2218                   plt_entry_size);
2219           bfd_put_32 (output_bfd, got_offset,
2220                       splt->contents + h->plt.offset + plt_off1);
2221         }
2222
2223       /* Fill in the plt entry and make a relocation, if this is a "real"
2224          PLT entry.  */
2225       if (has_gotplt)
2226         {
2227           /* Fill in the offset to the reloc table.  */
2228           bfd_put_32 (output_bfd,
2229                       rela_plt_index * sizeof (Elf32_External_Rela),
2230                       splt->contents + h->plt.offset + plt_off2);
2231
2232           /* Fill in the offset to the first PLT entry, where to "jump".  */
2233           bfd_put_32 (output_bfd,
2234                       - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2235                       splt->contents + h->plt.offset + plt_off3);
2236
2237           /* Fill in the entry in the global offset table with the address of
2238              the relocating stub.  */
2239           bfd_put_32 (output_bfd,
2240                       (splt->output_section->vma
2241                        + splt->output_offset
2242                        + h->plt.offset
2243                        + plt_stub_offset),
2244                       sgotplt->contents + got_offset);
2245
2246           /* Fill in the entry in the .rela.plt section.  */
2247           rela.r_offset = (sgotplt->output_section->vma
2248                            + sgotplt->output_offset
2249                            + got_offset);
2250           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2251           rela.r_addend = 0;
2252           loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2253           bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2254         }
2255
2256       if (!h->def_regular)
2257         {
2258           /* Mark the symbol as undefined, rather than as defined in
2259              the .plt section.  Leave the value alone.  */
2260           sym->st_shndx = SHN_UNDEF;
2261
2262           /* FIXME: From elf32-sparc.c 2001-02-19 (1.18).  I still don't
2263              know whether resetting the value is significant; if it really
2264              is, rather than a quirk or bug in the sparc port, then I
2265              believe we'd see this elsewhere.  */
2266           /* If the symbol is weak, we do need to clear the value.
2267              Otherwise, the PLT entry would provide a definition for
2268              the symbol even if the symbol wasn't defined anywhere,
2269              and so the symbol would never be NULL.  */
2270           if (!h->ref_regular_nonweak)
2271             sym->st_value = 0;
2272         }
2273     }
2274
2275   /* For an ordinary program, we emit .got relocs only for symbols that
2276      are in the dynamic-symbols table and are either defined by the
2277      program or are undefined weak symbols, or are function symbols
2278      where we do not output a PLT: the PLT reloc was output above and all
2279      references to the function symbol are redirected to the PLT.  */
2280   if (h->got.offset != (bfd_vma) -1
2281       && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2282       && (info->shared
2283           || (h->dynindx != -1
2284               && h->plt.offset == (bfd_vma) -1
2285               && !h->def_regular
2286               && h->root.type != bfd_link_hash_undefweak)))
2287     {
2288       asection *sgot;
2289       asection *srela;
2290       Elf_Internal_Rela rela;
2291       bfd_byte *loc;
2292       bfd_byte *where;
2293
2294       /* This symbol has an entry in the global offset table.  Set it up.  */
2295
2296       sgot = bfd_get_section_by_name (dynobj, ".got");
2297       srela = bfd_get_section_by_name (dynobj, ".rela.got");
2298       BFD_ASSERT (sgot != NULL && srela != NULL);
2299
2300       rela.r_offset = (sgot->output_section->vma
2301                        + sgot->output_offset
2302                        + (h->got.offset &~ (bfd_vma) 1));
2303
2304       /* If this is a static link, or it is a -Bsymbolic link and the
2305          symbol is defined locally or was forced to be local because
2306          of a version file, we just want to emit a RELATIVE reloc.
2307          The entry in the global offset table will already have been
2308          initialized in the relocate_section function.  */
2309       where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2310       if (! elf_hash_table (info)->dynamic_sections_created
2311           || (info->shared
2312               && (info->symbolic || h->dynindx == -1)
2313               && h->def_regular))
2314         {
2315           rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2316           rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2317         }
2318       else
2319         {
2320           bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2321           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2322           rela.r_addend = 0;
2323         }
2324
2325       loc = srela->contents;
2326       loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2327       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2328     }
2329
2330   if (h->needs_copy)
2331     {
2332       asection *s;
2333       Elf_Internal_Rela rela;
2334       bfd_byte *loc;
2335
2336       /* This symbol needs a copy reloc.  Set it up.  */
2337
2338       BFD_ASSERT (h->dynindx != -1
2339                   && (h->root.type == bfd_link_hash_defined
2340                       || h->root.type == bfd_link_hash_defweak));
2341
2342       s = bfd_get_section_by_name (h->root.u.def.section->owner,
2343                                    ".rela.bss");
2344       BFD_ASSERT (s != NULL);
2345
2346       rela.r_offset = (h->root.u.def.value
2347                        + h->root.u.def.section->output_section->vma
2348                        + h->root.u.def.section->output_offset);
2349       rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2350       rela.r_addend = 0;
2351       loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2352       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2353     }
2354
2355   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
2356   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2357       || h == elf_hash_table (info)->hgot)
2358     sym->st_shndx = SHN_ABS;
2359
2360   return TRUE;
2361 }
2362 \f
2363 /* Finish up the dynamic sections.  Do *not* emit relocs here, as their
2364    offsets were changed, as part of -z combreloc handling, from those we
2365    computed.  */
2366
2367 static bfd_boolean
2368 elf_cris_finish_dynamic_sections (output_bfd, info)
2369      bfd *output_bfd;
2370      struct bfd_link_info *info;
2371 {
2372   bfd *dynobj;
2373   asection *sgot;
2374   asection *sdyn;
2375
2376   dynobj = elf_hash_table (info)->dynobj;
2377
2378   sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2379   BFD_ASSERT (sgot != NULL);
2380   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2381
2382   if (elf_hash_table (info)->dynamic_sections_created)
2383     {
2384       asection *splt;
2385       Elf32_External_Dyn *dyncon, *dynconend;
2386
2387       splt = bfd_get_section_by_name (dynobj, ".plt");
2388       BFD_ASSERT (splt != NULL && sdyn != NULL);
2389
2390       dyncon = (Elf32_External_Dyn *) sdyn->contents;
2391       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2392       for (; dyncon < dynconend; dyncon++)
2393         {
2394           Elf_Internal_Dyn dyn;
2395           asection *s;
2396
2397           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2398
2399           switch (dyn.d_tag)
2400             {
2401             default:
2402               break;
2403
2404             case DT_PLTGOT:
2405               s = bfd_get_section_by_name (output_bfd, ".got");
2406               BFD_ASSERT (s != NULL);
2407               dyn.d_un.d_ptr = s->vma;
2408               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2409               break;
2410
2411             case DT_JMPREL:
2412               /* Yes, we *can* have a .plt and no .plt.rela, for instance
2413                  if all symbols are found in the .got (not .got.plt).  */
2414               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2415               dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2416               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2417               break;
2418
2419             case DT_PLTRELSZ:
2420               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2421               if (s == NULL)
2422                 dyn.d_un.d_val = 0;
2423               else
2424                 dyn.d_un.d_val = s->size;
2425               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2426               break;
2427
2428             case DT_RELASZ:
2429               /* The procedure linkage table relocs (DT_JMPREL) should
2430                  not be included in the overall relocs (DT_RELA).
2431                  Therefore, we override the DT_RELASZ entry here to
2432                  make it not include the JMPREL relocs.  Since the
2433                  linker script arranges for .rela.plt to follow all
2434                  other relocation sections, we don't have to worry
2435                  about changing the DT_RELA entry.  */
2436               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2437               if (s != NULL)
2438                 dyn.d_un.d_val -= s->size;
2439               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2440               break;
2441             }
2442         }
2443
2444       /* Fill in the first entry in the procedure linkage table.  */
2445       if (splt->size > 0)
2446         {
2447           if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2448             {
2449               if (info->shared)
2450                 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2451                         PLT_ENTRY_SIZE_V32);
2452               else
2453                 {
2454                   memcpy (splt->contents, elf_cris_plt0_entry_v32,
2455                           PLT_ENTRY_SIZE_V32);
2456                   bfd_put_32 (output_bfd,
2457                               sgot->output_section->vma
2458                               + sgot->output_offset + 4,
2459                               splt->contents + 4);
2460
2461                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
2462                     = PLT_ENTRY_SIZE_V32;
2463                 }
2464             }
2465           else
2466             {
2467               if (info->shared)
2468                 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2469                         PLT_ENTRY_SIZE);
2470               else
2471                 {
2472                   memcpy (splt->contents, elf_cris_plt0_entry,
2473                           PLT_ENTRY_SIZE);
2474                   bfd_put_32 (output_bfd,
2475                               sgot->output_section->vma
2476                               + sgot->output_offset + 4,
2477                               splt->contents + 6);
2478                   bfd_put_32 (output_bfd,
2479                               sgot->output_section->vma
2480                               + sgot->output_offset + 8,
2481                               splt->contents + 14);
2482
2483                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
2484                     = PLT_ENTRY_SIZE;
2485                 }
2486             }
2487         }
2488     }
2489
2490   /* Fill in the first three entries in the global offset table.  */
2491   if (sgot->size > 0)
2492     {
2493       if (sdyn == NULL)
2494         bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2495       else
2496         bfd_put_32 (output_bfd,
2497                     sdyn->output_section->vma + sdyn->output_offset,
2498                     sgot->contents);
2499       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2500       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2501     }
2502
2503   elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2504
2505   return TRUE;
2506 }
2507 \f
2508 /* Return the section that should be marked against GC for a given
2509    relocation.  */
2510
2511 static asection *
2512 cris_elf_gc_mark_hook (asection *sec,
2513                        struct bfd_link_info *info,
2514                        Elf_Internal_Rela *rel,
2515                        struct elf_link_hash_entry *h,
2516                        Elf_Internal_Sym *sym)
2517 {
2518   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2519   if (h != NULL)
2520     switch (r_type)
2521       {
2522       case R_CRIS_GNU_VTINHERIT:
2523       case R_CRIS_GNU_VTENTRY:
2524         return NULL;
2525
2526       default:
2527         break;
2528       }
2529
2530   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2531 }
2532
2533 /* Update the got entry reference counts for the section being removed.  */
2534
2535 static bfd_boolean
2536 cris_elf_gc_sweep_hook (bfd *abfd,
2537                         struct bfd_link_info *info,
2538                         asection *sec,
2539                         const Elf_Internal_Rela *relocs)
2540 {
2541   Elf_Internal_Shdr *symtab_hdr;
2542   struct elf_link_hash_entry **sym_hashes;
2543   bfd_signed_vma *local_got_refcounts;
2544   const Elf_Internal_Rela *rel, *relend;
2545   bfd *dynobj;
2546   asection *sgot;
2547   asection *srelgot;
2548
2549   if (info->relocatable)
2550     return TRUE;
2551
2552   dynobj = elf_hash_table (info)->dynobj;
2553   if (dynobj == NULL)
2554     return TRUE;
2555
2556   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2557   sym_hashes = elf_sym_hashes (abfd);
2558   local_got_refcounts = elf_local_got_refcounts (abfd);
2559
2560   sgot = bfd_get_section_by_name (dynobj, ".got");
2561   srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2562
2563   relend = relocs + sec->reloc_count;
2564   for (rel = relocs; rel < relend; rel++)
2565     {
2566       unsigned long r_symndx;
2567       struct elf_link_hash_entry *h = NULL;
2568       bfd_signed_vma got_element_size = 4;
2569       bfd_signed_vma *specific_refcount = NULL;
2570       enum elf_cris_reloc_type r_type;
2571
2572       r_symndx = ELF32_R_SYM (rel->r_info);
2573       if (r_symndx >= symtab_hdr->sh_info)
2574         {
2575           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2576           while (h->root.type == bfd_link_hash_indirect
2577                  || h->root.type == bfd_link_hash_warning)
2578             h = (struct elf_link_hash_entry *) h->root.u.i.link;
2579         }
2580
2581       r_type = ELF32_R_TYPE (rel->r_info);
2582       switch (r_type)
2583         {
2584         case R_CRIS_32_GOT:
2585         case R_CRIS_16_GOT:
2586         case R_CRIS_16_GOTPLT:
2587         case R_CRIS_32_GOTPLT:
2588           specific_refcount = h != NULL
2589             ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2590             : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2591           break;
2592
2593         case R_CRIS_32_GD:
2594         case R_CRIS_32_GOT_GD:
2595         case R_CRIS_16_GOT_GD:
2596           got_element_size = 8;
2597           specific_refcount = h != NULL
2598             ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2599             : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2600           break;
2601
2602         case R_CRIS_32_IE:
2603         case R_CRIS_16_GOT_TPREL:
2604         case R_CRIS_32_GOT_TPREL:
2605           specific_refcount = h != NULL
2606             ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2607             : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2608           break;
2609
2610         default:
2611           break;
2612         }
2613
2614       switch (r_type)
2615         {
2616         case R_CRIS_32_IE:
2617         case R_CRIS_32_GD:
2618         case R_CRIS_16_GOT_TPREL:
2619         case R_CRIS_32_GOT_TPREL:
2620         case R_CRIS_32_GOT_GD:
2621         case R_CRIS_16_GOT_GD:
2622         case R_CRIS_16_GOT:
2623         case R_CRIS_32_GOT:
2624           if (h != NULL)
2625             {
2626               /* If the counters are 0 when we got here, we've
2627                  miscounted somehow somewhere, an internal error.  */
2628               BFD_ASSERT (h->got.refcount > 0);
2629               --h->got.refcount;
2630
2631               BFD_ASSERT (*specific_refcount > 0);
2632               --*specific_refcount;
2633               if (*specific_refcount == 0)
2634                 {
2635                   /* We don't need the .got entry any more.  */
2636                   sgot->size -= got_element_size;
2637                   srelgot->size -= sizeof (Elf32_External_Rela);
2638                 }
2639               break;
2640             }
2641
2642         local_got_reloc:
2643           if (local_got_refcounts != NULL)
2644             {
2645               /* If the counters are 0 when we got here, we've
2646                  miscounted somehow somewhere, an internal error.  */
2647               BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2648               --local_got_refcounts[r_symndx];
2649
2650               BFD_ASSERT (*specific_refcount > 0);
2651               --*specific_refcount;
2652               if (*specific_refcount == 0)
2653                 {
2654                   /* We don't need the .got entry any more.  */
2655                   sgot->size -= got_element_size;
2656                   if (info->shared)
2657                     srelgot->size -= sizeof (Elf32_External_Rela);
2658                 }
2659             }
2660           break;
2661
2662         case R_CRIS_16_GOTPLT:
2663         case R_CRIS_32_GOTPLT:
2664           /* For local symbols, treat these like GOT relocs.  */
2665           if (h == NULL)
2666             goto local_got_reloc;
2667           /* Fall through.  */
2668
2669         case R_CRIS_32_PLT_GOTREL:
2670           /* FIXME: We don't garbage-collect away the .got section.  */
2671           if (local_got_refcounts != NULL)
2672             local_got_refcounts[-1]--;
2673           /* Fall through.  */
2674
2675         case R_CRIS_8_PCREL:
2676         case R_CRIS_16_PCREL:
2677         case R_CRIS_32_PCREL:
2678         case R_CRIS_32_PLT_PCREL:
2679           if (h != NULL)
2680             {
2681               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2682                   && h->plt.refcount > 0)
2683                 --h->plt.refcount;
2684             }
2685           break;
2686
2687         case R_CRIS_32_DTPREL:
2688         case R_CRIS_16_DTPREL:
2689           elf_cris_hash_table (info)->dtpmod_refcount--;
2690           if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2691             elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2692           BFD_ASSERT (local_got_refcounts != NULL);
2693           local_got_refcounts[-1]--;
2694           break;
2695
2696         default:
2697           break;
2698         }
2699     }
2700
2701   return TRUE;
2702 }
2703
2704 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2705    entry but we found we will not create any.  Called when we find we will
2706    not have any PLT for this symbol, by for example
2707    elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2708    or elf_cris_size_dynamic_sections if no dynamic sections will be
2709    created (we're only linking static objects).  */
2710
2711 static bfd_boolean
2712 elf_cris_adjust_gotplt_to_got (h, p)
2713      struct elf_cris_link_hash_entry *h;
2714      PTR p;
2715 {
2716   struct bfd_link_info *info = (struct bfd_link_info *) p;
2717
2718   if (h->root.root.type == bfd_link_hash_warning)
2719     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2720
2721   /* If nobody wanted a GOTPLT with this symbol, we're done.  */
2722   if (h->gotplt_refcount <= 0)
2723     return TRUE;
2724
2725   if (h->reg_got_refcount > 0)
2726     {
2727       /* There's a GOT entry for this symbol.  Just adjust the refcounts.
2728          Probably not necessary at this stage, but keeping them accurate
2729          helps avoiding surprises later.  */
2730       h->root.got.refcount += h->gotplt_refcount;
2731       h->reg_got_refcount += h->gotplt_refcount;
2732       h->gotplt_refcount = 0;
2733     }
2734   else
2735     {
2736       /* No GOT entry for this symbol.  We need to create one.  */
2737       bfd *dynobj = elf_hash_table (info)->dynobj;
2738       asection *sgot;
2739       asection *srelgot;
2740
2741       BFD_ASSERT (dynobj != NULL);
2742       sgot = bfd_get_section_by_name (dynobj, ".got");
2743       srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2744
2745       /* Put accurate refcounts there.  */
2746       h->root.got.refcount += h->gotplt_refcount;
2747       h->reg_got_refcount = h->gotplt_refcount;
2748
2749       h->gotplt_refcount = 0;
2750
2751       /* We always have a .got and a .rela.got section if there were
2752          GOTPLT relocs in input.  */
2753       BFD_ASSERT (sgot != NULL && srelgot != NULL);
2754
2755       /* Allocate space in the .got section.  */
2756       sgot->size += 4;
2757
2758       /* Allocate relocation space.  */
2759       srelgot->size += sizeof (Elf32_External_Rela);
2760     }
2761
2762   return TRUE;
2763 }
2764
2765 /* Try to fold PLT entries with GOT entries.  There are two cases when we
2766    want to do this:
2767
2768    - When all PLT references are GOTPLT references, and there are GOT
2769      references, and this is not the executable.  We don't have to
2770      generate a PLT at all.
2771
2772    - When there are both (ordinary) PLT references and GOT references,
2773      and this isn't the executable.
2774      We want to make the PLT reference use the ordinary GOT entry rather
2775      than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2776      since the GOT entry will have to be resolved at startup anyway.
2777
2778    Though the latter case is handled when room for the PLT is allocated,
2779    not here.
2780
2781    By folding into the GOT, we may need a round-trip to a PLT in the
2782    executable for calls, a loss in performance.  Still, losing a
2783    reloc is a win in size and at least in start-up time.
2784
2785    Note that this function is called before symbols are forced local by
2786    version scripts.  The differing cases are handled by
2787    elf_cris_hide_symbol.  */
2788
2789 static bfd_boolean
2790 elf_cris_try_fold_plt_to_got (h, p)
2791      struct elf_cris_link_hash_entry *h;
2792      PTR p;
2793 {
2794   struct bfd_link_info *info = (struct bfd_link_info *) p;
2795
2796   /* If there are no GOT references for this symbol, we can't fold any
2797      other reference so there's nothing to do.  Likewise if there are no
2798      PLT references; GOTPLT references included.  */
2799   if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2800     return TRUE;
2801
2802   /* GOTPLT relocs are supposed to be included into the PLT refcount.  */
2803   BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2804
2805   if (h->gotplt_refcount == h->root.plt.refcount)
2806     {
2807       /* The only PLT references are GOTPLT references, and there are GOT
2808          references.  Convert PLT to GOT references.  */
2809       if (! elf_cris_adjust_gotplt_to_got (h, info))
2810         return FALSE;
2811
2812       /* Clear the PLT references, so no PLT will be created.  */
2813       h->root.plt.offset = (bfd_vma) -1;
2814     }
2815
2816   return TRUE;
2817 }
2818
2819 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2820    to use a GOT entry (and create one) rather than requiring a GOTPLT
2821    entry.  */
2822
2823 static void
2824 elf_cris_hide_symbol (info, h, force_local)
2825      struct bfd_link_info *info;
2826      struct elf_link_hash_entry *h;
2827      bfd_boolean force_local;
2828 {
2829   elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2830
2831   _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2832 }
2833
2834 /* Adjust a symbol defined by a dynamic object and referenced by a
2835    regular object.  The current definition is in some section of the
2836    dynamic object, but we're not including those sections.  We have to
2837    change the definition to something the rest of the link can
2838    understand.  */
2839
2840 static bfd_boolean
2841 elf_cris_adjust_dynamic_symbol (info, h)
2842      struct bfd_link_info *info;
2843      struct elf_link_hash_entry *h;
2844 {
2845   bfd *dynobj;
2846   asection *s;
2847   bfd_size_type plt_entry_size;
2848
2849   dynobj = elf_hash_table (info)->dynobj;
2850
2851   /* Make sure we know what is going on here.  */
2852   BFD_ASSERT (dynobj != NULL
2853               && (h->needs_plt
2854                   || h->u.weakdef != NULL
2855                   || (h->def_dynamic
2856                       && h->ref_regular
2857                       && !h->def_regular)));
2858
2859   plt_entry_size
2860     = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2861        ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2862
2863   /* If this is a function, put it in the procedure linkage table.  We
2864      will fill in the contents of the procedure linkage table later,
2865      when we know the address of the .got section.  */
2866   if (h->type == STT_FUNC
2867       || h->needs_plt)
2868     {
2869       /* If we link a program (not a DSO), we'll get rid of unnecessary
2870          PLT entries; we point to the actual symbols -- even for pic
2871          relocs, because a program built with -fpic should have the same
2872          result as one built without -fpic, specifically considering weak
2873          symbols.
2874          FIXME: m68k and i386 differ here, for unclear reasons.  */
2875       if (! info->shared
2876           && !h->def_dynamic)
2877         {
2878           /* This case can occur if we saw a PLT reloc in an input file,
2879              but the symbol was not defined by a dynamic object.  In such
2880              a case, we don't actually need to build a procedure linkage
2881              table, and we can just do an absolute or PC reloc instead, or
2882              change a .got.plt index to a .got index for GOTPLT relocs.  */
2883           BFD_ASSERT (h->needs_plt);
2884           h->needs_plt = 0;
2885           h->plt.offset = (bfd_vma) -1;
2886           return
2887             elf_cris_adjust_gotplt_to_got ((struct
2888                                             elf_cris_link_hash_entry *) h,
2889                                            info);
2890         }
2891
2892       /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2893          where a pointer-equivalent symbol was unimportant (i.e. more
2894          like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2895          of the PLT.  We can't for the executable, because the GOT
2896          entries will point to the PLT there (and be constant).  */
2897       if (info->shared
2898           && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2899                                             h, info))
2900         return FALSE;
2901
2902       /* GC or folding may have rendered this entry unused.  */
2903       if (h->plt.refcount <= 0)
2904         {
2905           h->needs_plt = 0;
2906           h->plt.offset = (bfd_vma) -1;
2907           return TRUE;
2908         }
2909
2910       /* Make sure this symbol is output as a dynamic symbol.  */
2911       if (h->dynindx == -1)
2912         {
2913           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2914             return FALSE;
2915         }
2916
2917       s = bfd_get_section_by_name (dynobj, ".plt");
2918       BFD_ASSERT (s != NULL);
2919
2920       /* If this is the first .plt entry, make room for the special
2921          first entry.  */
2922       if (s->size == 0)
2923         s->size += plt_entry_size;
2924
2925       /* If this symbol is not defined in a regular file, and we are
2926          not generating a shared library, then set the symbol to this
2927          location in the .plt.  */
2928       if (!info->shared
2929           && !h->def_regular)
2930         {
2931           h->root.u.def.section = s;
2932           h->root.u.def.value = s->size;
2933         }
2934
2935       /* If there's already a GOT entry, use that, not a .got.plt.  A
2936          GOT field still has a reference count when we get here; it's
2937          not yet changed to an offset.  We can't do this for an
2938          executable, because then the reloc associated with the PLT
2939          would get a non-PLT reloc pointing to the PLT.  FIXME: Move
2940          this to elf_cris_try_fold_plt_to_got.  */
2941       if (info->shared && h->got.refcount > 0)
2942         {
2943           h->got.refcount += h->plt.refcount;
2944
2945           /* Mark the PLT offset to use the GOT entry by setting the low
2946              bit in the plt offset; it is always a multiple of
2947              plt_entry_size (which is at least a multiple of 2).  */
2948           BFD_ASSERT ((s->size % plt_entry_size) == 0);
2949
2950           /* Change the PLT refcount to an offset.  */
2951           h->plt.offset = s->size;
2952
2953           /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2954              that the got entry should be used instead.  */
2955           BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2956                        h)->gotplt_offset == 0);
2957
2958           /* Make room for this entry.  */
2959           s->size += plt_entry_size;
2960
2961           return TRUE;
2962         }
2963
2964       /* No GOT reference for this symbol; prepare for an ordinary PLT.  */
2965       h->plt.offset = s->size;
2966
2967       /* Make room for this entry.  */
2968       s->size += plt_entry_size;
2969
2970       /* We also need to make an entry in the .got.plt section, which
2971          will be placed in the .got section by the linker script.  */
2972       ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2973         = elf_cris_hash_table (info)->next_gotplt_entry;
2974       elf_cris_hash_table (info)->next_gotplt_entry += 4;
2975
2976       s = bfd_get_section_by_name (dynobj, ".got.plt");
2977       BFD_ASSERT (s != NULL);
2978       s->size += 4;
2979
2980       /* We also need to make an entry in the .rela.plt section.  */
2981
2982       s = bfd_get_section_by_name (dynobj, ".rela.plt");
2983       BFD_ASSERT (s != NULL);
2984       s->size += sizeof (Elf32_External_Rela);
2985
2986       return TRUE;
2987     }
2988
2989   /* Reinitialize the plt offset now that it is not used as a reference
2990      count any more.  */
2991   h->plt.offset = (bfd_vma) -1;
2992
2993   /* If this is a weak symbol, and there is a real definition, the
2994      processor independent code will have arranged for us to see the
2995      real definition first, and we can just use the same value.  */
2996   if (h->u.weakdef != NULL)
2997     {
2998       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2999                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
3000       h->root.u.def.section = h->u.weakdef->root.u.def.section;
3001       h->root.u.def.value = h->u.weakdef->root.u.def.value;
3002       return TRUE;
3003     }
3004
3005   /* This is a reference to a symbol defined by a dynamic object which
3006      is not a function.  */
3007
3008   /* If we are creating a shared library, we must presume that the
3009      only references to the symbol are via the global offset table.
3010      For such cases we need not do anything here; the relocations will
3011      be handled correctly by relocate_section.  */
3012   if (info->shared)
3013     return TRUE;
3014
3015   /* If there are no references to this symbol that do not use the
3016      GOT, we don't need to generate a copy reloc.  */
3017   if (!h->non_got_ref)
3018     return TRUE;
3019
3020   if (h->size == 0)
3021     {
3022       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3023                              h->root.root.string);
3024       return TRUE;
3025     }
3026
3027   /* We must allocate the symbol in our .dynbss section, which will
3028      become part of the .bss section of the executable.  There will be
3029      an entry for this symbol in the .dynsym section.  The dynamic
3030      object will contain position independent code, so all references
3031      from the dynamic object to this symbol will go through the global
3032      offset table.  The dynamic linker will use the .dynsym entry to
3033      determine the address it must put in the global offset table, so
3034      both the dynamic object and the regular object will refer to the
3035      same memory location for the variable.  */
3036
3037   s = bfd_get_section_by_name (dynobj, ".dynbss");
3038   BFD_ASSERT (s != NULL);
3039
3040   /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3041      copy the initial value out of the dynamic object and into the
3042      runtime process image.  We need to remember the offset into the
3043      .rela.bss section we are going to use.  */
3044   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3045     {
3046       asection *srel;
3047
3048       srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3049       BFD_ASSERT (srel != NULL);
3050       srel->size += sizeof (Elf32_External_Rela);
3051       h->needs_copy = 1;
3052     }
3053
3054   return _bfd_elf_adjust_dynamic_copy (h, s);
3055 }
3056
3057 /* Adjust our "subclass" elements for an indirect symbol.  */
3058
3059 static void
3060 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3061                                struct elf_link_hash_entry *dir,
3062                                struct elf_link_hash_entry *ind)
3063 {
3064   struct elf_cris_link_hash_entry *edir, *eind;
3065
3066   edir = (struct elf_cris_link_hash_entry *) dir;
3067   eind = (struct elf_cris_link_hash_entry *) ind;
3068
3069   /* Only indirect symbols are replaced; we're not interested in
3070      updating any of EIND's fields for other symbols.  */
3071   if (eind->root.root.type != bfd_link_hash_indirect)
3072     {
3073       /* Still, we need to copy flags for e.g. weak definitions.  */
3074       _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3075       return;
3076     }
3077
3078   BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3079   BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3080
3081 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3082 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3083   XMOVOPZ (pcrel_relocs_copied, =, NULL);
3084   XMOVE (gotplt_refcount);
3085   XMOVE (gotplt_offset);
3086   XMOVE (reg_got_refcount);
3087   XMOVE (tprel_refcount);
3088   XMOVE (dtp_refcount);
3089 #undef XMOVE
3090 #undef XMOVOPZ
3091
3092   _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3093 }
3094
3095 /* Look through the relocs for a section during the first phase.  */
3096
3097 static bfd_boolean
3098 cris_elf_check_relocs (abfd, info, sec, relocs)
3099      bfd *abfd;
3100      struct bfd_link_info *info;
3101      asection *sec;
3102      const Elf_Internal_Rela *relocs;
3103 {
3104   bfd *dynobj;
3105   Elf_Internal_Shdr *symtab_hdr;
3106   struct elf_link_hash_entry **sym_hashes;
3107   bfd_signed_vma *local_got_refcounts;
3108   const Elf_Internal_Rela *rel;
3109   const Elf_Internal_Rela *rel_end;
3110   asection *sgot;
3111   asection *srelgot;
3112   asection *sreloc;
3113
3114   if (info->relocatable)
3115     return TRUE;
3116
3117   dynobj = elf_hash_table (info)->dynobj;
3118   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3119   sym_hashes = elf_sym_hashes (abfd);
3120   local_got_refcounts = elf_local_got_refcounts (abfd);
3121
3122   sgot = NULL;
3123   srelgot = NULL;
3124   sreloc = NULL;
3125
3126   rel_end = relocs + sec->reloc_count;
3127   for (rel = relocs; rel < rel_end; rel++)
3128     {
3129       struct elf_link_hash_entry *h;
3130       unsigned long r_symndx;
3131       enum elf_cris_reloc_type r_type;
3132       bfd_signed_vma got_element_size = 4;
3133       unsigned long r_symndx_lgot = INT_MAX;
3134
3135       r_symndx = ELF32_R_SYM (rel->r_info);
3136       if (r_symndx < symtab_hdr->sh_info)
3137         {
3138           h = NULL;
3139           r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3140         }
3141       else
3142         {
3143           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3144           while (h->root.type == bfd_link_hash_indirect
3145                  || h->root.type == bfd_link_hash_warning)
3146             h = (struct elf_link_hash_entry *) h->root.u.i.link;
3147         }
3148
3149       r_type = ELF32_R_TYPE (rel->r_info);
3150
3151       /* Some relocs require linker-created sections; we need to hang them
3152          on the first input bfd we found that contained dynamic relocs.  */
3153       switch (r_type)
3154         {
3155         case R_CRIS_16_DTPREL:
3156         case R_CRIS_32_DTPREL:
3157           /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3158              entry at index 3. */
3159           if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3160             elf_cris_hash_table (info)->next_gotplt_entry += 8;
3161           elf_cris_hash_table (info)->dtpmod_refcount++;
3162           /* Fall through.  */
3163
3164         case R_CRIS_32_IE:
3165         case R_CRIS_32_GD:
3166         case R_CRIS_16_GOT_GD:
3167         case R_CRIS_32_GOT_GD:
3168         case R_CRIS_32_GOT_TPREL:
3169         case R_CRIS_16_GOT_TPREL:
3170         case R_CRIS_16_GOT:
3171         case R_CRIS_32_GOT:
3172         case R_CRIS_32_GOTREL:
3173         case R_CRIS_32_PLT_GOTREL:
3174         case R_CRIS_32_PLT_PCREL:
3175         case R_CRIS_16_GOTPLT:
3176         case R_CRIS_32_GOTPLT:
3177           if (dynobj == NULL)
3178             {
3179               elf_hash_table (info)->dynobj = dynobj = abfd;
3180
3181               /* We could handle this if we can get a handle on the
3182                  output bfd in elf_cris_adjust_dynamic_symbol.  Failing
3183                  that, we must insist on dynobj being a specific mach.  */
3184               if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3185                 {
3186                   (*_bfd_error_handler)
3187                     (_("%B, section %A:\n  v10/v32 compatible object %s"
3188                        " must not contain a PIC relocation"),
3189                      abfd, sec);
3190                   return FALSE;
3191                 }
3192
3193               /* Create the .got section, so we can assume it's always
3194                  present whenever there's a dynobj.  */
3195               if (!_bfd_elf_create_got_section (dynobj, info))
3196                 return FALSE;
3197             }
3198
3199           if (sgot == NULL)
3200             sgot = bfd_get_section_by_name (dynobj, ".got");
3201
3202           if (local_got_refcounts == NULL)
3203             {
3204               bfd_size_type amt;
3205
3206               /* We use index local_got_refcounts[-1] to count all
3207                  GOT-relative relocations that do not have explicit
3208                  GOT entries.  */
3209               amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3210               amt *= sizeof (bfd_signed_vma);
3211               local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3212               if (local_got_refcounts == NULL)
3213                 return FALSE;
3214
3215               local_got_refcounts++;
3216               elf_local_got_refcounts (abfd) = local_got_refcounts;
3217             }
3218           break;
3219
3220         default:
3221           break;
3222         }
3223
3224       /* Some relocs require a global offset table (but perhaps not a
3225          specific GOT entry).  */
3226       switch (r_type)
3227         {
3228         case R_CRIS_16_DTPREL:
3229         case R_CRIS_32_DTPREL:
3230           /* Not requesting .got.rela for an executable: the contents
3231              of the first entry is constant there.  For a shared
3232              library, we need .got.rela for the R_CRIS_DTPMOD
3233              relocation at index 3.  */
3234           if (!info->shared)
3235             break;
3236           /* Fall through.  */
3237
3238         case R_CRIS_32_IE:
3239         case R_CRIS_32_GD:
3240         case R_CRIS_16_GOT_GD:
3241         case R_CRIS_32_GOT_GD:
3242         case R_CRIS_32_GOT_TPREL:
3243         case R_CRIS_16_GOT_TPREL:
3244           /* Fall through.  */
3245
3246           /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3247              entry only for local symbols.  Unfortunately, we don't know
3248              until later on if there's a version script that forces the
3249              symbol local.  We must have the .rela.got section in place
3250              before we know if the symbol looks global now, so we need
3251              to treat the reloc just like for R_CRIS_16_GOT and
3252              R_CRIS_32_GOT.  */
3253         case R_CRIS_16_GOTPLT:
3254         case R_CRIS_32_GOTPLT:
3255         case R_CRIS_16_GOT:
3256         case R_CRIS_32_GOT:
3257           if (srelgot == NULL
3258               && (h != NULL || info->shared))
3259             {
3260               srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3261               if (srelgot == NULL)
3262                 {
3263                   srelgot = bfd_make_section_with_flags (dynobj,
3264                                                          ".rela.got",
3265                                                          (SEC_ALLOC
3266                                                           | SEC_LOAD
3267                                                           | SEC_HAS_CONTENTS
3268                                                           | SEC_IN_MEMORY
3269                                                           | SEC_LINKER_CREATED
3270                                                           | SEC_READONLY));
3271                   if (srelgot == NULL
3272                       || !bfd_set_section_alignment (dynobj, srelgot, 2))
3273                     return FALSE;
3274                 }
3275             }
3276           break;
3277
3278         default:
3279           break;
3280         }
3281
3282       /* Warn and error for invalid input.  */
3283       switch (r_type)
3284         {
3285         case R_CRIS_32_IE:
3286         case R_CRIS_32_TPREL:
3287         case R_CRIS_16_TPREL:
3288         case R_CRIS_32_GD:
3289           if (info->shared)
3290             {
3291               (*_bfd_error_handler)
3292                 (_("%B, section %A:\n  relocation %s not valid"
3293                    " in a shared object;"
3294                    " typically an option mixup, recompile with -fPIC"),
3295                  abfd,
3296                  sec,
3297                  cris_elf_howto_table[r_type].name);
3298               /* Don't return FALSE here; we want messages for all of
3299                  these and the error behavior is ungraceful
3300                  anyway.  */
3301             }
3302         default:
3303           break;
3304         }
3305
3306       switch (r_type)
3307         {
3308         case R_CRIS_32_GD:
3309         case R_CRIS_16_GOT_GD:
3310         case R_CRIS_32_GOT_GD:
3311           /* These are requests for tls_index entries, run-time R_CRIS_DTP.  */
3312           got_element_size = 8;
3313           r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3314           break;
3315
3316         case R_CRIS_16_DTPREL:
3317         case R_CRIS_32_DTPREL:
3318           /* These two just request for the constant-index
3319              module-local tls_index-sized GOT entry, which we add
3320              elsewhere.  */
3321           break;
3322
3323         case R_CRIS_32_IE:
3324         case R_CRIS_32_GOT_TPREL:
3325         case R_CRIS_16_GOT_TPREL:
3326           r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3327
3328           /* Those relocs also require that a DSO is of type
3329              Initial Exec.  Like other targets, we don't reset this
3330              flag even if the relocs are GC:ed away.  */
3331           if (info->shared)
3332             info->flags |= DF_STATIC_TLS;
3333           break;
3334
3335           /* Let's list the other assembler-generated TLS-relocs too,
3336              just to show that they're not forgotten. */
3337         case R_CRIS_16_TPREL:
3338         case R_CRIS_32_TPREL:
3339         default:
3340           break;
3341         }
3342
3343       switch (r_type)
3344         {
3345         case R_CRIS_16_GOTPLT:
3346         case R_CRIS_32_GOTPLT:
3347           /* Mark that we need a GOT entry if the PLT entry (and its GOT
3348              entry) is eliminated.  We can only do this for a non-local
3349              symbol.  */
3350           if (h != NULL)
3351             {
3352               elf_cris_hash_entry (h)->gotplt_refcount++;
3353               goto handle_gotplt_reloc;
3354             }
3355           /* If h is NULL then this is a local symbol, and we must make a
3356              GOT entry for it, so handle it like a GOT reloc.  */
3357           /* Fall through.  */
3358
3359         case R_CRIS_32_IE:
3360         case R_CRIS_32_GD:
3361         case R_CRIS_16_GOT_GD:
3362         case R_CRIS_32_GOT_GD:
3363         case R_CRIS_32_GOT_TPREL:
3364         case R_CRIS_16_GOT_TPREL:
3365         case R_CRIS_16_GOT:
3366         case R_CRIS_32_GOT:
3367           /* This symbol requires a global offset table entry.  */
3368           if (h != NULL)
3369             {
3370               if (h->got.refcount == 0)
3371                 {
3372                   /* Make sure this symbol is output as a dynamic symbol.  */
3373                   if (h->dynindx == -1)
3374                     {
3375                       if (!bfd_elf_link_record_dynamic_symbol (info, h))
3376                         return FALSE;
3377                     }
3378                 }
3379
3380               /* Update the sum of reloc counts for this symbol.  */
3381               h->got.refcount++;
3382
3383               switch (r_type)
3384                 {
3385                 case R_CRIS_16_GOT:
3386                 case R_CRIS_32_GOT:
3387                   if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3388                     {
3389                       /* Allocate space in the .got section.  */
3390                       sgot->size += got_element_size;
3391                       /* Allocate relocation space.  */
3392                       srelgot->size += sizeof (Elf32_External_Rela);
3393                     }
3394                   elf_cris_hash_entry (h)->reg_got_refcount++;
3395                   break;
3396
3397                 case R_CRIS_32_GD:
3398                 case R_CRIS_16_GOT_GD:
3399                 case R_CRIS_32_GOT_GD:
3400                   if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3401                     {
3402                       /* Allocate space in the .got section.  */
3403                       sgot->size += got_element_size;
3404                       /* Allocate relocation space.  */
3405                       srelgot->size += sizeof (Elf32_External_Rela);
3406                     }
3407                   elf_cris_hash_entry (h)->dtp_refcount++;
3408                   break;
3409
3410                 case R_CRIS_32_IE:
3411                 case R_CRIS_32_GOT_TPREL:
3412                 case R_CRIS_16_GOT_TPREL:
3413                   if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3414                     {
3415                       /* Allocate space in the .got section.  */
3416                       sgot->size += got_element_size;
3417                       /* Allocate relocation space.  */
3418                       srelgot->size += sizeof (Elf32_External_Rela);
3419                     }
3420                   elf_cris_hash_entry (h)->tprel_refcount++;
3421                   break;
3422
3423                 default:
3424                   BFD_FAIL ();
3425                   break;
3426                 }
3427             }
3428           else
3429             {
3430               /* This is a global offset table entry for a local symbol.  */
3431               if (local_got_refcounts[r_symndx_lgot] == 0)
3432                 {
3433                   sgot->size += got_element_size;
3434                   if (info->shared)
3435                     {
3436                       /* If we are generating a shared object, we need
3437                          to output a R_CRIS_RELATIVE reloc so that the
3438                          dynamic linker can adjust this GOT entry.
3439                          Similarly for non-regular got entries.  */
3440                       srelgot->size += sizeof (Elf32_External_Rela);
3441                     }
3442                 }
3443               /* Update the reloc-specific count.  */
3444               local_got_refcounts[r_symndx_lgot]++;
3445
3446               /* This one is the sum of all the others.  */
3447               local_got_refcounts[r_symndx]++;
3448             }
3449           break;
3450
3451         case R_CRIS_16_DTPREL:
3452         case R_CRIS_32_DTPREL:
3453         case R_CRIS_32_GOTREL:
3454           /* This reference requires a global offset table.
3455              FIXME: The actual refcount isn't used currently; the .got
3456              section can't be removed if there were any references in the
3457              input.  */
3458           local_got_refcounts[-1]++;
3459           break;
3460
3461         handle_gotplt_reloc:
3462
3463         case R_CRIS_32_PLT_GOTREL:
3464           /* This reference requires a global offset table.  */
3465           local_got_refcounts[-1]++;
3466           /* Fall through.  */
3467
3468         case R_CRIS_32_PLT_PCREL:
3469           /* This symbol requires a procedure linkage table entry.  We
3470              actually build the entry in adjust_dynamic_symbol,
3471              because this might be a case of linking PIC code which is
3472              never referenced by a dynamic object, in which case we
3473              don't need to generate a procedure linkage table entry
3474              after all.  */
3475
3476           /* Beware: if we'd check for visibility of the symbol here
3477              (and not marking the need for a PLT when non-visible), we'd
3478              get into trouble with keeping handling consistent with
3479              regards to relocs found before definition and GOTPLT
3480              handling.  Eliminable PLT entries will be dealt with later
3481              anyway.  */
3482           if (h == NULL)
3483             continue;
3484
3485           h->needs_plt = 1;
3486           h->plt.refcount++;
3487           break;
3488
3489         case R_CRIS_8:
3490         case R_CRIS_16:
3491         case R_CRIS_32:
3492           /* Let's help debug shared library creation.  Any of these
3493              relocs *can* be used in shared libs, but pages containing
3494              them cannot be shared, so they're not appropriate for
3495              common use.  Don't warn for sections we don't care about,
3496              such as debug sections or non-constant sections.  We
3497              can't help tables of (global) function pointers, for
3498              example, though they must be emitted in a (writable) data
3499              section to avoid having impure text sections.  */
3500           if (info->shared
3501               && (sec->flags & SEC_ALLOC) != 0
3502               && (sec->flags & SEC_READONLY) != 0)
3503             {
3504               /* FIXME: How do we make this optionally a warning only?  */
3505               (*_bfd_error_handler)
3506                 (_("%B, section %A:\n  relocation %s should not"
3507                    " be used in a shared object; recompile with -fPIC"),
3508                  abfd,
3509                  sec,
3510                  cris_elf_howto_table[r_type].name);
3511             }
3512           if (h != NULL)
3513             {
3514               h->non_got_ref = 1;
3515
3516               /* Make sure a plt entry is created for this symbol if it
3517                  turns out to be a function defined by a dynamic object.  */
3518               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3519                 h->plt.refcount++;
3520             }
3521
3522           /* If we are creating a shared library and this is not a local
3523              symbol, we need to copy the reloc into the shared library.
3524              However when linking with -Bsymbolic and this is a global
3525              symbol which is defined in an object we are including in the
3526              link (i.e., DEF_REGULAR is set), then we can resolve the
3527              reloc directly.  At this point we have not seen all the input
3528              files, so it is possible that DEF_REGULAR is not set now but
3529              will be set later (it is never cleared).  In case of a weak
3530              definition, DEF_REGULAR may be cleared later by a strong
3531              definition in a shared library.  We account for that
3532              possibility below by storing information in the relocs_copied
3533              field of the hash table entry.  A similar situation occurs
3534              when creating shared libraries and symbol visibility changes
3535              render the symbol local.  */
3536
3537           /* No need to do anything if we're not creating a shared object.  */
3538           if (! info->shared)
3539             break;
3540
3541           /* We don't need to handle relocs into sections not going into
3542              the "real" output.  */
3543           if ((sec->flags & SEC_ALLOC) == 0)
3544             break;
3545
3546           /* We may need to create a reloc section in the dynobj and made room
3547              for this reloc.  */
3548           if (sreloc == NULL)
3549             {
3550               sreloc = _bfd_elf_make_dynamic_reloc_section
3551                 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3552
3553               if (sreloc == NULL)
3554                 return FALSE;
3555             }
3556
3557           if (sec->flags & SEC_READONLY)
3558             info->flags |= DF_TEXTREL;
3559
3560           sreloc->size += sizeof (Elf32_External_Rela);
3561           break;
3562
3563         case R_CRIS_8_PCREL:
3564         case R_CRIS_16_PCREL:
3565         case R_CRIS_32_PCREL:
3566           if (h != NULL)
3567             {
3568               h->non_got_ref = 1;
3569
3570               /* Make sure a plt entry is created for this symbol if it
3571                  turns out to be a function defined by a dynamic object.  */
3572               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3573                 h->plt.refcount++;
3574             }
3575
3576           /* If we are creating a shared library and this is not a local
3577              symbol, we need to copy the reloc into the shared library.
3578              However when linking with -Bsymbolic and this is a global
3579              symbol which is defined in an object we are including in the
3580              link (i.e., DEF_REGULAR is set), then we can resolve the
3581              reloc directly.  At this point we have not seen all the input
3582              files, so it is possible that DEF_REGULAR is not set now but
3583              will be set later (it is never cleared).  In case of a weak
3584              definition, DEF_REGULAR may be cleared later by a strong
3585              definition in a shared library.  We account for that
3586              possibility below by storing information in the relocs_copied
3587              field of the hash table entry.  A similar situation occurs
3588              when creating shared libraries and symbol visibility changes
3589              render the symbol local.  */
3590
3591           /* No need to do anything if we're not creating a shared object.  */
3592           if (! info->shared)
3593             break;
3594
3595           /* We don't need to handle relocs into sections not going into
3596              the "real" output.  */
3597           if ((sec->flags & SEC_ALLOC) == 0)
3598             break;
3599
3600           /* If the symbol is local, then we know already we can
3601              eliminate the reloc.  */
3602           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3603             break;
3604
3605           /* If this is with -Bsymbolic and the symbol isn't weak, and
3606              is defined by an ordinary object (the ones we include in
3607              this shared library) then we can also eliminate the
3608              reloc.  See comment above for more eliminable cases which
3609              we can't identify at this time.  */
3610           if (info->symbolic
3611               && h->root.type != bfd_link_hash_defweak
3612               && h->def_regular)
3613             break;
3614
3615           /* We may need to create a reloc section in the dynobj and made room
3616              for this reloc.  */
3617           if (sreloc == NULL)
3618             {
3619               sreloc = _bfd_elf_make_dynamic_reloc_section
3620                 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3621
3622               if (sreloc == NULL)
3623                 return FALSE;
3624             }
3625
3626           sreloc->size += sizeof (Elf32_External_Rela);
3627
3628           /* We count the number of PC relative relocations we have
3629              entered for this symbol, so that we can discard them
3630              again if the symbol is later defined by a regular object.
3631              We know that h is really a pointer to an
3632              elf_cris_link_hash_entry.  */
3633           {
3634             struct elf_cris_link_hash_entry *eh;
3635             struct elf_cris_pcrel_relocs_copied *p;
3636
3637             eh = elf_cris_hash_entry (h);
3638
3639             for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3640               if (p->section == sreloc)
3641                 break;
3642
3643             if (p == NULL)
3644               {
3645                 p = ((struct elf_cris_pcrel_relocs_copied *)
3646                      bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3647                 if (p == NULL)
3648                   return FALSE;
3649                 p->next = eh->pcrel_relocs_copied;
3650                 eh->pcrel_relocs_copied = p;
3651                 p->section = sreloc;
3652                 p->count = 0;
3653                 p->r_type = r_type;
3654               }
3655
3656             ++p->count;
3657           }
3658           break;
3659
3660         /* This relocation describes the C++ object vtable hierarchy.
3661            Reconstruct it for later use during GC.  */
3662         case R_CRIS_GNU_VTINHERIT:
3663           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3664             return FALSE;
3665           break;
3666
3667         /* This relocation describes which C++ vtable entries are actually
3668            used.  Record for later use during GC.  */
3669         case R_CRIS_GNU_VTENTRY:
3670           BFD_ASSERT (h != NULL);
3671           if (h != NULL
3672               && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3673             return FALSE;
3674           break;
3675
3676         case R_CRIS_16_TPREL:
3677         case R_CRIS_32_TPREL:
3678           /* Already warned above, when necessary.  */
3679           break;
3680
3681         default:
3682           /* Other relocs do not appear here.  */
3683           bfd_set_error (bfd_error_bad_value);
3684           return FALSE;
3685         }
3686     }
3687
3688   return TRUE;
3689 }
3690
3691 /* Set the sizes of the dynamic sections.  */
3692
3693 static bfd_boolean
3694 elf_cris_size_dynamic_sections (output_bfd, info)
3695      bfd *output_bfd ATTRIBUTE_UNUSED;
3696      struct bfd_link_info *info;
3697 {
3698   bfd *dynobj;
3699   asection *s;
3700   bfd_boolean plt;
3701   bfd_boolean relocs;
3702
3703   dynobj = elf_hash_table (info)->dynobj;
3704   BFD_ASSERT (dynobj != NULL);
3705
3706   if (elf_hash_table (info)->dynamic_sections_created)
3707     {
3708       /* Set the contents of the .interp section to the interpreter.  */
3709       if (info->executable)
3710         {
3711           s = bfd_get_section_by_name (dynobj, ".interp");
3712           BFD_ASSERT (s != NULL);
3713           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3714           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3715         }
3716     }
3717   else
3718     {
3719       /* Adjust all expected GOTPLT uses to use a GOT entry instead.  */
3720       elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3721                                    elf_cris_adjust_gotplt_to_got,
3722                                    (PTR) info);
3723
3724       /* We may have created entries in the .rela.got section.
3725          However, if we are not creating the dynamic sections, we will
3726          not actually use these entries.  Reset the size of .rela.got,
3727          which will cause it to get stripped from the output file
3728          below.  */
3729       s = bfd_get_section_by_name (dynobj, ".rela.got");
3730       if (s != NULL)
3731         s->size = 0;
3732     }
3733
3734   /* If this is a -Bsymbolic shared link, then we need to discard all PC
3735      relative relocs against symbols defined in a regular object.  We
3736      allocated space for them in the check_relocs routine, but we will not
3737      fill them in in the relocate_section routine.  We also discard space
3738      for relocs that have become for local symbols due to symbol
3739      visibility changes.  For programs, we discard space for relocs for
3740      symbols not referenced by any dynamic object.  */
3741   if (info->shared)
3742     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3743                                  elf_cris_discard_excess_dso_dynamics,
3744                                  (PTR) info);
3745   else
3746     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3747                                  elf_cris_discard_excess_program_dynamics,
3748                                  (PTR) info);
3749
3750   /* The check_relocs and adjust_dynamic_symbol entry points have
3751      determined the sizes of the various dynamic sections.  Allocate
3752      memory for them.  */
3753   plt = FALSE;
3754   relocs = FALSE;
3755   for (s = dynobj->sections; s != NULL; s = s->next)
3756     {
3757       const char *name;
3758
3759       if ((s->flags & SEC_LINKER_CREATED) == 0)
3760         continue;
3761
3762       /* It's OK to base decisions on the section name, because none
3763          of the dynobj section names depend upon the input files.  */
3764       name = bfd_get_section_name (dynobj, s);
3765
3766       if (strcmp (name, ".plt") == 0)
3767         {
3768           /* Remember whether there is a PLT.  */
3769           plt = s->size != 0;
3770         }
3771       else if (strcmp (name, ".got.plt") == 0)
3772         {
3773           /* The .got.plt contains the .got header as well as the
3774              actual .got.plt contents.  The .got header may contain a
3775              R_CRIS_DTPMOD entry at index 3.  */
3776           s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3777             ? 8 : 0;
3778         }
3779       else if (CONST_STRNEQ (name, ".rela"))
3780         {
3781           if (strcmp (name, ".rela.got") == 0
3782               && elf_cris_hash_table (info)->dtpmod_refcount != 0
3783               && info->shared)
3784             s->size += sizeof (Elf32_External_Rela);
3785
3786           if (s->size != 0)
3787             {
3788               /* Remember whether there are any reloc sections other
3789                  than .rela.plt.  */
3790               if (strcmp (name, ".rela.plt") != 0)
3791                   relocs = TRUE;
3792
3793               /* We use the reloc_count field as a counter if we need
3794                  to copy relocs into the output file.  */
3795               s->reloc_count = 0;
3796             }
3797         }
3798       else if (! CONST_STRNEQ (name, ".got")
3799                && strcmp (name, ".dynbss") != 0)
3800         {
3801           /* It's not one of our sections, so don't allocate space.  */
3802           continue;
3803         }
3804
3805       if (s->size == 0)
3806         {
3807           /* If we don't need this section, strip it from the
3808              output file.  This is mostly to handle .rela.bss and
3809              .rela.plt.  We must create both sections in
3810              create_dynamic_sections, because they must be created
3811              before the linker maps input sections to output
3812              sections.  The linker does that before
3813              adjust_dynamic_symbol is called, and it is that
3814              function which decides whether anything needs to go
3815              into these sections.  */
3816           s->flags |= SEC_EXCLUDE;
3817           continue;
3818         }
3819
3820       if ((s->flags & SEC_HAS_CONTENTS) == 0)
3821         continue;
3822
3823       /* Allocate memory for the section contents. We use bfd_zalloc here
3824          in case unused entries are not reclaimed before the section's
3825          contents are written out.  This should not happen, but this way
3826          if it does, we will not write out garbage.  For reloc sections,
3827          this will make entries have the type R_CRIS_NONE.  */
3828       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3829       if (s->contents == NULL)
3830         return FALSE;
3831     }
3832
3833   if (elf_hash_table (info)->dynamic_sections_created)
3834     {
3835       /* Add some entries to the .dynamic section.  We fill in the
3836          values later, in elf_cris_finish_dynamic_sections, but we
3837          must add the entries now so that we get the correct size for
3838          the .dynamic section.  The DT_DEBUG entry is filled in by the
3839          dynamic linker and used by the debugger.  */
3840 #define add_dynamic_entry(TAG, VAL) \
3841   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3842
3843       if (!info->shared)
3844         {
3845           if (!add_dynamic_entry (DT_DEBUG, 0))
3846             return FALSE;
3847         }
3848
3849       if (plt)
3850         {
3851           if (!add_dynamic_entry (DT_PLTGOT, 0)
3852               || !add_dynamic_entry (DT_PLTRELSZ, 0)
3853               || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3854               || !add_dynamic_entry (DT_JMPREL, 0))
3855             return FALSE;
3856         }
3857
3858       if (relocs)
3859         {
3860           if (!add_dynamic_entry (DT_RELA, 0)
3861               || !add_dynamic_entry (DT_RELASZ, 0)
3862               || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3863             return FALSE;
3864         }
3865
3866       if ((info->flags & DF_TEXTREL) != 0)
3867         {
3868           if (!add_dynamic_entry (DT_TEXTREL, 0))
3869             return FALSE;
3870           info->flags |= DF_TEXTREL;
3871         }
3872     }
3873 #undef add_dynamic_entry
3874
3875   return TRUE;
3876 }
3877
3878 /* This function is called via elf_cris_link_hash_traverse if we are
3879    creating a shared object.  In the -Bsymbolic case, it discards the
3880    space allocated to copy PC relative relocs against symbols which
3881    are defined in regular objects.  For the normal non-symbolic case,
3882    we also discard space for relocs that have become local due to
3883    symbol visibility changes.  We allocated space for them in the
3884    check_relocs routine, but we won't fill them in in the
3885    relocate_section routine.  */
3886
3887 static bfd_boolean
3888 elf_cris_discard_excess_dso_dynamics (h, inf)
3889      struct elf_cris_link_hash_entry *h;
3890      PTR inf;
3891 {
3892   struct elf_cris_pcrel_relocs_copied *s;
3893   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3894
3895   if (h->root.root.type == bfd_link_hash_warning)
3896     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3897
3898   /* If a symbol has been forced local or we have found a regular
3899      definition for the symbolic link case, then we won't be needing
3900      any relocs.  */
3901   if (h->root.def_regular
3902       && (h->root.forced_local
3903           || info->symbolic))
3904     {
3905       for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3906         s->section->size -= s->count * sizeof (Elf32_External_Rela);
3907
3908       return TRUE;
3909     }
3910
3911   /* If we have accounted for PC-relative relocs for read-only
3912      sections, now is the time to warn for them.  We can't do it in
3913      cris_elf_check_relocs, because we don't know the status of all
3914      symbols at that time (and it's common to force symbols local
3915      late).  */
3916
3917   for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3918     {
3919       BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3920
3921       /* FIXME: How do we make this optionally a warning only?  */
3922       (*_bfd_error_handler)
3923         (_("%B, section `%A', to symbol `%s':\n"
3924            "  relocation %s should not be used"
3925            " in a shared object; recompile with -fPIC"),
3926          s->section->owner,
3927          s->section,
3928          h->root.root.root.string,
3929          cris_elf_howto_table[s->r_type].name);
3930
3931       info->flags |= DF_TEXTREL;
3932     }
3933
3934   return TRUE;
3935 }
3936
3937 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3938    creating a shared object.  We discard space for relocs for symbols put
3939    in the .got, but which we found we do not have to resolve at run-time.  */
3940
3941 static bfd_boolean
3942 elf_cris_discard_excess_program_dynamics (h, inf)
3943      struct elf_cris_link_hash_entry *h;
3944      PTR inf;
3945 {
3946   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3947
3948   if (h->root.root.type == bfd_link_hash_warning)
3949     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3950
3951   /* If we're not creating a shared library and have a symbol which is
3952      referred to by .got references, but the symbol is defined locally,
3953      (or rather, not defined by a DSO) then lose the reloc for the .got
3954      (don't allocate room for it).  Likewise for relocs for something
3955      for which we create a PLT.  */
3956   if (!h->root.def_dynamic
3957       || h->root.plt.refcount > 0)
3958     {
3959       if (h->reg_got_refcount > 0
3960           /* The size of this section is only valid and in sync with the
3961              various reference counts if we do dynamic; don't decrement it
3962              otherwise.  */
3963           && elf_hash_table (info)->dynamic_sections_created)
3964         {
3965           bfd *dynobj = elf_hash_table (info)->dynobj;
3966           asection *srelgot;
3967
3968           BFD_ASSERT (dynobj != NULL);
3969
3970           srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3971
3972           BFD_ASSERT (srelgot != NULL);
3973
3974           srelgot->size -= sizeof (Elf32_External_Rela);
3975         }
3976
3977       /* If the locally-defined symbol isn't used by a DSO, then we don't
3978          have to export it as a dynamic symbol.  This was already done for
3979          functions; doing this for all symbols would presumably not
3980          introduce new problems.  Of course we don't do this if we're
3981          exporting all dynamic symbols.  */
3982       if (! info->export_dynamic
3983           && h->root.dynindx != -1
3984           && !h->root.def_dynamic
3985           && !h->root.ref_dynamic)
3986         {
3987           h->root.dynindx = -1;
3988           _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3989                                   h->root.dynstr_index);
3990         }
3991     }
3992
3993   return TRUE;
3994 }
3995
3996 /* Reject a file depending on presence and expectation of prefixed
3997    underscores on symbols.  */
3998
3999 static bfd_boolean
4000 cris_elf_object_p (abfd)
4001      bfd *abfd;
4002 {
4003   if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4004     return FALSE;
4005
4006   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4007     return (bfd_get_symbol_leading_char (abfd) == '_');
4008   else
4009     return (bfd_get_symbol_leading_char (abfd) == 0);
4010 }
4011
4012 /* Mark presence or absence of leading underscore.  Set machine type
4013    flags from mach type.  */
4014
4015 static void
4016 cris_elf_final_write_processing (abfd, linker)
4017      bfd *abfd;
4018      bfd_boolean linker ATTRIBUTE_UNUSED;
4019 {
4020   unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4021
4022   e_flags &= ~EF_CRIS_UNDERSCORE;
4023   if (bfd_get_symbol_leading_char (abfd) == '_')
4024     e_flags |= EF_CRIS_UNDERSCORE;
4025
4026   switch (bfd_get_mach (abfd))
4027     {
4028     case bfd_mach_cris_v0_v10:
4029       e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4030       break;
4031
4032     case bfd_mach_cris_v10_v32:
4033       e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4034       break;
4035
4036     case bfd_mach_cris_v32:
4037       e_flags |= EF_CRIS_VARIANT_V32;
4038       break;
4039
4040     default:
4041       _bfd_abort (__FILE__, __LINE__,
4042                   _("Unexpected machine number"));
4043     }
4044
4045   elf_elfheader (abfd)->e_flags = e_flags;
4046 }
4047
4048 /* Set the mach type from e_flags value.  */
4049
4050 static bfd_boolean
4051 cris_elf_set_mach_from_flags (abfd, flags)
4052      bfd *abfd;
4053      unsigned long flags;
4054 {
4055   switch (flags & EF_CRIS_VARIANT_MASK)
4056     {
4057     case EF_CRIS_VARIANT_ANY_V0_V10:
4058       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4059       break;
4060
4061     case EF_CRIS_VARIANT_V32:
4062       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4063       break;
4064
4065     case EF_CRIS_VARIANT_COMMON_V10_V32:
4066       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4067       break;
4068
4069     default:
4070       /* Since we don't recognize them, we obviously can't support them
4071          with this code; we'd have to require that all future handling
4072          would be optional.  */
4073       bfd_set_error (bfd_error_wrong_format);
4074       return FALSE;
4075     }
4076
4077   return TRUE;
4078 }
4079
4080 /* Display the flags field.  */
4081
4082 static bfd_boolean
4083 cris_elf_print_private_bfd_data (abfd, ptr)
4084      bfd *abfd;
4085      PTR ptr;
4086 {
4087   FILE *file = (FILE *) ptr;
4088
4089   BFD_ASSERT (abfd != NULL && ptr != NULL);
4090
4091   _bfd_elf_print_private_bfd_data (abfd, ptr);
4092
4093   fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4094
4095   if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4096     fprintf (file, _(" [symbols have a _ prefix]"));
4097   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4098       == EF_CRIS_VARIANT_COMMON_V10_V32)
4099     fprintf (file, _(" [v10 and v32]"));
4100   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4101       == EF_CRIS_VARIANT_V32)
4102     fprintf (file, _(" [v32]"));
4103
4104   fputc ('\n', file);
4105   return TRUE;
4106 }
4107
4108 /* Don't mix files with and without a leading underscore.  */
4109
4110 static bfd_boolean
4111 cris_elf_merge_private_bfd_data (ibfd, obfd)
4112      bfd *ibfd;
4113      bfd *obfd;
4114 {
4115   int imach, omach;
4116
4117   if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4118     return FALSE;
4119
4120   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4121       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4122     return TRUE;
4123
4124   imach = bfd_get_mach (ibfd);
4125
4126   if (! elf_flags_init (obfd))
4127     {
4128       /* This happens when ld starts out with a 'blank' output file.  */
4129       elf_flags_init (obfd) = TRUE;
4130
4131       /* We ignore the linker-set mach, and instead set it according to
4132          the first input file.  This would also happen if we could
4133          somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4134          This allows us to keep the same linker config across
4135          cris(v0..v10) and crisv32.  The drawback is that we can't force
4136          the output type, which might be a sane thing to do for a
4137          v10+v32 compatibility object.  */
4138       if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4139         return FALSE;
4140     }
4141
4142   if (bfd_get_symbol_leading_char (ibfd)
4143       != bfd_get_symbol_leading_char (obfd))
4144     {
4145       (*_bfd_error_handler)
4146         (bfd_get_symbol_leading_char (ibfd) == '_'
4147          ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4148          : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4149          ibfd);
4150       bfd_set_error (bfd_error_bad_value);
4151       return FALSE;
4152     }
4153
4154   omach = bfd_get_mach (obfd);
4155
4156   if (imach != omach)
4157     {
4158       /* We can get an incompatible combination only if either is
4159          bfd_mach_cris_v32, and the other one isn't compatible.  */
4160       if ((imach == bfd_mach_cris_v32
4161            && omach != bfd_mach_cris_v10_v32)
4162           || (omach == bfd_mach_cris_v32
4163               && imach != bfd_mach_cris_v10_v32))
4164         {
4165           (*_bfd_error_handler)
4166             ((imach == bfd_mach_cris_v32)
4167              ? _("%B contains CRIS v32 code, incompatible"
4168                  " with previous objects")
4169              : _("%B contains non-CRIS-v32 code, incompatible"
4170                  " with previous objects"),
4171              ibfd);
4172           bfd_set_error (bfd_error_bad_value);
4173           return FALSE;
4174         }
4175
4176       /* We don't have to check the case where the input is compatible
4177          with v10 and v32, because the output is already known to be set
4178          to the other (compatible) mach.  */
4179       if (omach == bfd_mach_cris_v10_v32
4180           && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4181         return FALSE;
4182     }
4183
4184   return TRUE;
4185 }
4186
4187 /* Do side-effects of e_flags copying to obfd.  */
4188
4189 static bfd_boolean
4190 cris_elf_copy_private_bfd_data (ibfd, obfd)
4191      bfd *ibfd;
4192      bfd *obfd;
4193 {
4194   /* Call the base function.  */
4195   if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4196     return FALSE;
4197
4198   /* If output is big-endian for some obscure reason, stop here.  */
4199   if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4200     return FALSE;
4201
4202   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4203       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4204     return TRUE;
4205
4206   /* Do what we really came here for.  */
4207   return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4208 }
4209
4210 static enum elf_reloc_type_class
4211 elf_cris_reloc_type_class (rela)
4212      const Elf_Internal_Rela *rela;
4213 {
4214   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4215   switch (r_type)
4216     {
4217     case R_CRIS_RELATIVE:
4218       return reloc_class_relative;
4219     case R_CRIS_JUMP_SLOT:
4220       return reloc_class_plt;
4221     case R_CRIS_COPY:
4222       return reloc_class_copy;
4223     default:
4224       return reloc_class_normal;
4225     }
4226 }
4227
4228 /* The elf_backend_got_elt_size worker.  For one symbol, we can have up to
4229    two GOT entries from three types with two different sizes.  We handle
4230    it as a single entry, so we can use the regular offset-calculation
4231    machinery.  */
4232
4233 static bfd_vma
4234 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4235                        struct bfd_link_info *info ATTRIBUTE_UNUSED,
4236                        struct elf_link_hash_entry *hr,
4237                        bfd *ibfd,
4238                        unsigned long symndx)
4239 {
4240   struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4241   bfd_vma eltsiz = 0;
4242
4243   /* We may have one regular GOT entry or up to two TLS GOT
4244      entries.  */
4245   if (h == NULL)
4246     {
4247       Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4248       bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4249
4250       BFD_ASSERT (local_got_refcounts != NULL);
4251
4252       if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4253         {
4254           /* We can't have a variable referred to both as a regular
4255              variable and through TLS relocs.  */
4256           BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4257                       && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4258           return 4;
4259         }
4260
4261       if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4262         eltsiz += 8;
4263
4264       if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4265         eltsiz += 4;
4266     }
4267   else
4268     {
4269       struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4270       if (hh->reg_got_refcount > 0)
4271         {
4272           /* The actual error-on-input is emitted elsewhere.  */
4273           BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4274           return 4;
4275         }
4276
4277       if (hh->dtp_refcount > 0)
4278         eltsiz += 8;
4279
4280       if (hh->tprel_refcount > 0)
4281         eltsiz += 4;
4282     }
4283
4284   /* We're only called when h->got.refcount is non-zero, so we must
4285      have a non-zero size.  */
4286   BFD_ASSERT (eltsiz != 0);
4287   return eltsiz;
4288 }
4289 \f
4290 #define ELF_ARCH                bfd_arch_cris
4291 #define ELF_MACHINE_CODE        EM_CRIS
4292 #define ELF_MAXPAGESIZE         0x2000
4293
4294 #define TARGET_LITTLE_SYM       bfd_elf32_cris_vec
4295 #define TARGET_LITTLE_NAME      "elf32-cris"
4296 #define elf_symbol_leading_char 0
4297
4298 #define elf_info_to_howto_rel                   NULL
4299 #define elf_info_to_howto                       cris_info_to_howto_rela
4300 #define elf_backend_relocate_section            cris_elf_relocate_section
4301 #define elf_backend_gc_mark_hook                cris_elf_gc_mark_hook
4302 #define elf_backend_gc_sweep_hook               cris_elf_gc_sweep_hook
4303 #define elf_backend_check_relocs                cris_elf_check_relocs
4304 #define elf_backend_grok_prstatus               cris_elf_grok_prstatus
4305 #define elf_backend_grok_psinfo                 cris_elf_grok_psinfo
4306
4307 #define elf_backend_can_gc_sections             1
4308 #define elf_backend_can_refcount                1
4309
4310 #define elf_backend_object_p                    cris_elf_object_p
4311 #define elf_backend_final_write_processing \
4312         cris_elf_final_write_processing
4313 #define bfd_elf32_bfd_print_private_bfd_data \
4314         cris_elf_print_private_bfd_data
4315 #define bfd_elf32_bfd_merge_private_bfd_data \
4316         cris_elf_merge_private_bfd_data
4317 #define bfd_elf32_bfd_copy_private_bfd_data \
4318         cris_elf_copy_private_bfd_data
4319
4320 #define bfd_elf32_bfd_reloc_type_lookup         cris_reloc_type_lookup
4321 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4322
4323 #define bfd_elf32_bfd_link_hash_table_create \
4324         elf_cris_link_hash_table_create
4325 #define elf_backend_adjust_dynamic_symbol \
4326         elf_cris_adjust_dynamic_symbol
4327 #define elf_backend_copy_indirect_symbol \
4328         elf_cris_copy_indirect_symbol
4329 #define elf_backend_size_dynamic_sections \
4330         elf_cris_size_dynamic_sections
4331 #define elf_backend_init_index_section          _bfd_elf_init_1_index_section
4332 #define elf_backend_finish_dynamic_symbol \
4333         elf_cris_finish_dynamic_symbol
4334 #define elf_backend_finish_dynamic_sections \
4335         elf_cris_finish_dynamic_sections
4336 #define elf_backend_create_dynamic_sections \
4337         _bfd_elf_create_dynamic_sections
4338 #define bfd_elf32_bfd_final_link \
4339         bfd_elf_gc_common_final_link
4340 #define elf_backend_hide_symbol                 elf_cris_hide_symbol
4341 #define elf_backend_reloc_type_class            elf_cris_reloc_type_class
4342
4343 #define elf_backend_want_got_plt        1
4344 #define elf_backend_plt_readonly        1
4345 #define elf_backend_want_plt_sym        0
4346 #define elf_backend_got_header_size     12
4347 #define elf_backend_got_elt_size elf_cris_got_elt_size
4348
4349 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4350    linking and libraries (if it's a win of any significance).  Until then,
4351    take the easy route.  */
4352 #define elf_backend_may_use_rel_p 0
4353 #define elf_backend_may_use_rela_p 1
4354 #define elf_backend_rela_normal         1
4355
4356 #include "elf32-target.h"
4357
4358 #undef TARGET_LITTLE_SYM
4359 #undef TARGET_LITTLE_NAME
4360 #undef elf_symbol_leading_char
4361
4362 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4363 #define TARGET_LITTLE_NAME "elf32-us-cris"
4364 #define elf_symbol_leading_char '_'
4365 #undef elf32_bed
4366 #define elf32_bed elf32_us_cris_bed
4367
4368 #include "elf32-target.h"