| 1 | /* IA-64 support for 64-bit ELF |
| 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "bfd.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "elf-bfd.h" |
| 27 | #include "opcode/ia64.h" |
| 28 | #include "elf/ia64.h" |
| 29 | #include "objalloc.h" |
| 30 | #include "hashtab.h" |
| 31 | |
| 32 | #define ARCH_SIZE NN |
| 33 | |
| 34 | #if ARCH_SIZE == 64 |
| 35 | #define LOG_SECTION_ALIGN 3 |
| 36 | #endif |
| 37 | |
| 38 | #if ARCH_SIZE == 32 |
| 39 | #define LOG_SECTION_ALIGN 2 |
| 40 | #endif |
| 41 | |
| 42 | /* THE RULES for all the stuff the linker creates -- |
| 43 | |
| 44 | GOT Entries created in response to LTOFF or LTOFF_FPTR |
| 45 | relocations. Dynamic relocs created for dynamic |
| 46 | symbols in an application; REL relocs for locals |
| 47 | in a shared library. |
| 48 | |
| 49 | FPTR The canonical function descriptor. Created for local |
| 50 | symbols in applications. Descriptors for dynamic symbols |
| 51 | and local symbols in shared libraries are created by |
| 52 | ld.so. Thus there are no dynamic relocs against these |
| 53 | objects. The FPTR relocs for such _are_ passed through |
| 54 | to the dynamic relocation tables. |
| 55 | |
| 56 | FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. |
| 57 | Requires the creation of a PLTOFF entry. This does not |
| 58 | require any dynamic relocations. |
| 59 | |
| 60 | PLTOFF Created by PLTOFF relocations. For local symbols, this |
| 61 | is an alternate function descriptor, and in shared libraries |
| 62 | requires two REL relocations. Note that this cannot be |
| 63 | transformed into an FPTR relocation, since it must be in |
| 64 | range of the GP. For dynamic symbols, this is a function |
| 65 | descriptor for a MIN_PLT entry, and requires one IPLT reloc. |
| 66 | |
| 67 | MIN_PLT Created by PLTOFF entries against dynamic symbols. This |
| 68 | does not require dynamic relocations. */ |
| 69 | |
| 70 | #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) |
| 71 | |
| 72 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
| 73 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 74 | |
| 75 | /* In dynamically (linker-) created sections, we generally need to keep track |
| 76 | of the place a symbol or expression got allocated to. This is done via hash |
| 77 | tables that store entries of the following type. */ |
| 78 | |
| 79 | struct elfNN_ia64_dyn_sym_info |
| 80 | { |
| 81 | /* The addend for which this entry is relevant. */ |
| 82 | bfd_vma addend; |
| 83 | |
| 84 | bfd_vma got_offset; |
| 85 | bfd_vma fptr_offset; |
| 86 | bfd_vma pltoff_offset; |
| 87 | bfd_vma plt_offset; |
| 88 | bfd_vma plt2_offset; |
| 89 | bfd_vma tprel_offset; |
| 90 | bfd_vma dtpmod_offset; |
| 91 | bfd_vma dtprel_offset; |
| 92 | |
| 93 | /* The symbol table entry, if any, that this was derived from. */ |
| 94 | struct elf_link_hash_entry *h; |
| 95 | |
| 96 | /* Used to count non-got, non-plt relocations for delayed sizing |
| 97 | of relocation sections. */ |
| 98 | struct elfNN_ia64_dyn_reloc_entry |
| 99 | { |
| 100 | struct elfNN_ia64_dyn_reloc_entry *next; |
| 101 | asection *srel; |
| 102 | int type; |
| 103 | int count; |
| 104 | |
| 105 | /* Is this reloc against readonly section? */ |
| 106 | bfd_boolean reltext; |
| 107 | } *reloc_entries; |
| 108 | |
| 109 | /* TRUE when the section contents have been updated. */ |
| 110 | unsigned got_done : 1; |
| 111 | unsigned fptr_done : 1; |
| 112 | unsigned pltoff_done : 1; |
| 113 | unsigned tprel_done : 1; |
| 114 | unsigned dtpmod_done : 1; |
| 115 | unsigned dtprel_done : 1; |
| 116 | |
| 117 | /* TRUE for the different kinds of linker data we want created. */ |
| 118 | unsigned want_got : 1; |
| 119 | unsigned want_gotx : 1; |
| 120 | unsigned want_fptr : 1; |
| 121 | unsigned want_ltoff_fptr : 1; |
| 122 | unsigned want_plt : 1; |
| 123 | unsigned want_plt2 : 1; |
| 124 | unsigned want_pltoff : 1; |
| 125 | unsigned want_tprel : 1; |
| 126 | unsigned want_dtpmod : 1; |
| 127 | unsigned want_dtprel : 1; |
| 128 | }; |
| 129 | |
| 130 | struct elfNN_ia64_local_hash_entry |
| 131 | { |
| 132 | int id; |
| 133 | unsigned int r_sym; |
| 134 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ |
| 135 | unsigned int count; |
| 136 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ |
| 137 | unsigned int sorted_count; |
| 138 | /* The size of elfNN_ia64_dyn_sym_info array. */ |
| 139 | unsigned int size; |
| 140 | /* The array of elfNN_ia64_dyn_sym_info. */ |
| 141 | struct elfNN_ia64_dyn_sym_info *info; |
| 142 | |
| 143 | /* TRUE if this hash entry's addends was translated for |
| 144 | SHF_MERGE optimization. */ |
| 145 | unsigned sec_merge_done : 1; |
| 146 | }; |
| 147 | |
| 148 | struct elfNN_ia64_link_hash_entry |
| 149 | { |
| 150 | struct elf_link_hash_entry root; |
| 151 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ |
| 152 | unsigned int count; |
| 153 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ |
| 154 | unsigned int sorted_count; |
| 155 | /* The size of elfNN_ia64_dyn_sym_info array. */ |
| 156 | unsigned int size; |
| 157 | /* The array of elfNN_ia64_dyn_sym_info. */ |
| 158 | struct elfNN_ia64_dyn_sym_info *info; |
| 159 | }; |
| 160 | |
| 161 | struct elfNN_ia64_link_hash_table |
| 162 | { |
| 163 | /* The main hash table. */ |
| 164 | struct elf_link_hash_table root; |
| 165 | |
| 166 | asection *got_sec; /* the linkage table section (or NULL) */ |
| 167 | asection *rel_got_sec; /* dynamic relocation section for same */ |
| 168 | asection *fptr_sec; /* function descriptor table (or NULL) */ |
| 169 | asection *rel_fptr_sec; /* dynamic relocation section for same */ |
| 170 | asection *plt_sec; /* the primary plt section (or NULL) */ |
| 171 | asection *pltoff_sec; /* private descriptors for plt (or NULL) */ |
| 172 | asection *rel_pltoff_sec; /* dynamic relocation section for same */ |
| 173 | |
| 174 | bfd_size_type minplt_entries; /* number of minplt entries */ |
| 175 | unsigned reltext : 1; /* are there relocs against readonly sections? */ |
| 176 | unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */ |
| 177 | bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */ |
| 178 | |
| 179 | htab_t loc_hash_table; |
| 180 | void *loc_hash_memory; |
| 181 | }; |
| 182 | |
| 183 | struct elfNN_ia64_allocate_data |
| 184 | { |
| 185 | struct bfd_link_info *info; |
| 186 | bfd_size_type ofs; |
| 187 | bfd_boolean only_got; |
| 188 | }; |
| 189 | |
| 190 | #define elfNN_ia64_hash_table(p) \ |
| 191 | ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) |
| 192 | |
| 193 | static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info |
| 194 | (struct elfNN_ia64_link_hash_table *ia64_info, |
| 195 | struct elf_link_hash_entry *h, |
| 196 | bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); |
| 197 | static bfd_boolean elfNN_ia64_dynamic_symbol_p |
| 198 | (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); |
| 199 | static bfd_reloc_status_type elfNN_ia64_install_value |
| 200 | (bfd_byte *hit_addr, bfd_vma val, unsigned int r_type); |
| 201 | static bfd_boolean elfNN_ia64_choose_gp |
| 202 | (bfd *abfd, struct bfd_link_info *info); |
| 203 | static void elfNN_ia64_relax_ldxmov |
| 204 | (bfd_byte *contents, bfd_vma off); |
| 205 | static void elfNN_ia64_dyn_sym_traverse |
| 206 | (struct elfNN_ia64_link_hash_table *ia64_info, |
| 207 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR), |
| 208 | PTR info); |
| 209 | static bfd_boolean allocate_global_data_got |
| 210 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); |
| 211 | static bfd_boolean allocate_global_fptr_got |
| 212 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); |
| 213 | static bfd_boolean allocate_local_got |
| 214 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); |
| 215 | static bfd_boolean elfNN_ia64_hpux_vec |
| 216 | (const bfd_target *vec); |
| 217 | static bfd_boolean allocate_dynrel_entries |
| 218 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); |
| 219 | static asection *get_pltoff |
| 220 | (bfd *abfd, struct bfd_link_info *info, |
| 221 | struct elfNN_ia64_link_hash_table *ia64_info); |
| 222 | \f |
| 223 | /* ia64-specific relocation. */ |
| 224 | |
| 225 | /* Perform a relocation. Not much to do here as all the hard work is |
| 226 | done in elfNN_ia64_final_link_relocate. */ |
| 227 | static bfd_reloc_status_type |
| 228 | elfNN_ia64_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, |
| 229 | asymbol *sym ATTRIBUTE_UNUSED, |
| 230 | PTR data ATTRIBUTE_UNUSED, asection *input_section, |
| 231 | bfd *output_bfd, char **error_message) |
| 232 | { |
| 233 | if (output_bfd) |
| 234 | { |
| 235 | reloc->address += input_section->output_offset; |
| 236 | return bfd_reloc_ok; |
| 237 | } |
| 238 | |
| 239 | if (input_section->flags & SEC_DEBUGGING) |
| 240 | return bfd_reloc_continue; |
| 241 | |
| 242 | *error_message = "Unsupported call to elfNN_ia64_reloc"; |
| 243 | return bfd_reloc_notsupported; |
| 244 | } |
| 245 | |
| 246 | #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \ |
| 247 | HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \ |
| 248 | elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN) |
| 249 | |
| 250 | /* This table has to be sorted according to increasing number of the |
| 251 | TYPE field. */ |
| 252 | static reloc_howto_type ia64_howto_table[] = |
| 253 | { |
| 254 | IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE), |
| 255 | |
| 256 | IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE), |
| 257 | IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE), |
| 258 | IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE), |
| 259 | IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE), |
| 260 | IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE), |
| 261 | IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE), |
| 262 | IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE), |
| 263 | |
| 264 | IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE), |
| 265 | IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE), |
| 266 | IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE), |
| 267 | IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE), |
| 268 | IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE), |
| 269 | IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE), |
| 270 | |
| 271 | IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE), |
| 272 | IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE), |
| 273 | |
| 274 | IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE), |
| 275 | IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE), |
| 276 | IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE), |
| 277 | IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE), |
| 278 | |
| 279 | IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE), |
| 280 | IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE), |
| 281 | IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE), |
| 282 | IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE), |
| 283 | IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE), |
| 284 | |
| 285 | IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE), |
| 286 | IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE), |
| 287 | IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE), |
| 288 | IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE), |
| 289 | IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE), |
| 290 | IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE), |
| 291 | IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE), |
| 292 | IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE), |
| 293 | |
| 294 | IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE), |
| 295 | IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE), |
| 296 | IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE), |
| 297 | IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE), |
| 298 | IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE), |
| 299 | IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE), |
| 300 | |
| 301 | IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE), |
| 302 | IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE), |
| 303 | IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE), |
| 304 | IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE), |
| 305 | |
| 306 | IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE), |
| 307 | IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE), |
| 308 | IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE), |
| 309 | IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE), |
| 310 | |
| 311 | IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE), |
| 312 | IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE), |
| 313 | IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE), |
| 314 | IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE), |
| 315 | |
| 316 | IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE), |
| 317 | IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE), |
| 318 | IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE), |
| 319 | IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE), |
| 320 | |
| 321 | IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE), |
| 322 | IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE), |
| 323 | IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE), |
| 324 | |
| 325 | IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE), |
| 326 | IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE), |
| 327 | IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE), |
| 328 | IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE), |
| 329 | IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE), |
| 330 | |
| 331 | IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE), |
| 332 | IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE), |
| 333 | IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE), |
| 334 | IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE), |
| 335 | IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE), |
| 336 | IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE), |
| 337 | |
| 338 | IA64_HOWTO (R_IA64_DTPMOD64MSB, "DTPMOD64MSB", 4, FALSE, FALSE), |
| 339 | IA64_HOWTO (R_IA64_DTPMOD64LSB, "DTPMOD64LSB", 4, FALSE, FALSE), |
| 340 | IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE), |
| 341 | |
| 342 | IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE), |
| 343 | IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE), |
| 344 | IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE), |
| 345 | IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE), |
| 346 | IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE), |
| 347 | IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE), |
| 348 | IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE), |
| 349 | IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE), |
| 350 | }; |
| 351 | |
| 352 | static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1]; |
| 353 | |
| 354 | /* Given a BFD reloc type, return the matching HOWTO structure. */ |
| 355 | |
| 356 | static reloc_howto_type * |
| 357 | lookup_howto (unsigned int rtype) |
| 358 | { |
| 359 | static int inited = 0; |
| 360 | int i; |
| 361 | |
| 362 | if (!inited) |
| 363 | { |
| 364 | inited = 1; |
| 365 | |
| 366 | memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index)); |
| 367 | for (i = 0; i < NELEMS (ia64_howto_table); ++i) |
| 368 | elf_code_to_howto_index[ia64_howto_table[i].type] = i; |
| 369 | } |
| 370 | |
| 371 | if (rtype > R_IA64_MAX_RELOC_CODE) |
| 372 | return 0; |
| 373 | i = elf_code_to_howto_index[rtype]; |
| 374 | if (i >= NELEMS (ia64_howto_table)) |
| 375 | return 0; |
| 376 | return ia64_howto_table + i; |
| 377 | } |
| 378 | |
| 379 | static reloc_howto_type* |
| 380 | elfNN_ia64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 381 | bfd_reloc_code_real_type bfd_code) |
| 382 | { |
| 383 | unsigned int rtype; |
| 384 | |
| 385 | switch (bfd_code) |
| 386 | { |
| 387 | case BFD_RELOC_NONE: rtype = R_IA64_NONE; break; |
| 388 | |
| 389 | case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break; |
| 390 | case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break; |
| 391 | case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break; |
| 392 | |
| 393 | case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break; |
| 394 | case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break; |
| 395 | case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break; |
| 396 | case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break; |
| 397 | |
| 398 | case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break; |
| 399 | case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break; |
| 400 | case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break; |
| 401 | case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break; |
| 402 | case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break; |
| 403 | case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break; |
| 404 | |
| 405 | case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break; |
| 406 | case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break; |
| 407 | |
| 408 | case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break; |
| 409 | case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break; |
| 410 | case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break; |
| 411 | case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break; |
| 412 | case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break; |
| 413 | case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break; |
| 414 | case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break; |
| 415 | case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break; |
| 416 | case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break; |
| 417 | |
| 418 | case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break; |
| 419 | case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break; |
| 420 | case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break; |
| 421 | case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break; |
| 422 | case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break; |
| 423 | case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break; |
| 424 | case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break; |
| 425 | case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break; |
| 426 | case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break; |
| 427 | case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break; |
| 428 | case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break; |
| 429 | |
| 430 | case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break; |
| 431 | case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break; |
| 432 | case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break; |
| 433 | case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break; |
| 434 | case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break; |
| 435 | case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break; |
| 436 | |
| 437 | case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break; |
| 438 | case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break; |
| 439 | case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break; |
| 440 | case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break; |
| 441 | |
| 442 | case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break; |
| 443 | case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break; |
| 444 | case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break; |
| 445 | case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break; |
| 446 | |
| 447 | case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break; |
| 448 | case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break; |
| 449 | case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break; |
| 450 | case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break; |
| 451 | |
| 452 | case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break; |
| 453 | case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break; |
| 454 | case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break; |
| 455 | case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break; |
| 456 | |
| 457 | case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break; |
| 458 | case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break; |
| 459 | case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break; |
| 460 | case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break; |
| 461 | case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break; |
| 462 | |
| 463 | case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break; |
| 464 | case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break; |
| 465 | case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break; |
| 466 | case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break; |
| 467 | case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break; |
| 468 | case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break; |
| 469 | |
| 470 | case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break; |
| 471 | case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break; |
| 472 | case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break; |
| 473 | |
| 474 | case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break; |
| 475 | case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break; |
| 476 | case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break; |
| 477 | case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break; |
| 478 | case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break; |
| 479 | case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break; |
| 480 | case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break; |
| 481 | case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break; |
| 482 | |
| 483 | default: return 0; |
| 484 | } |
| 485 | return lookup_howto (rtype); |
| 486 | } |
| 487 | |
| 488 | static reloc_howto_type * |
| 489 | elfNN_ia64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 490 | const char *r_name) |
| 491 | { |
| 492 | unsigned int i; |
| 493 | |
| 494 | for (i = 0; |
| 495 | i < sizeof (ia64_howto_table) / sizeof (ia64_howto_table[0]); |
| 496 | i++) |
| 497 | if (ia64_howto_table[i].name != NULL |
| 498 | && strcasecmp (ia64_howto_table[i].name, r_name) == 0) |
| 499 | return &ia64_howto_table[i]; |
| 500 | |
| 501 | return NULL; |
| 502 | } |
| 503 | |
| 504 | /* Given a ELF reloc, return the matching HOWTO structure. */ |
| 505 | |
| 506 | static void |
| 507 | elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 508 | arelent *bfd_reloc, |
| 509 | Elf_Internal_Rela *elf_reloc) |
| 510 | { |
| 511 | bfd_reloc->howto |
| 512 | = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info)); |
| 513 | } |
| 514 | \f |
| 515 | #define PLT_HEADER_SIZE (3 * 16) |
| 516 | #define PLT_MIN_ENTRY_SIZE (1 * 16) |
| 517 | #define PLT_FULL_ENTRY_SIZE (2 * 16) |
| 518 | #define PLT_RESERVED_WORDS 3 |
| 519 | |
| 520 | static const bfd_byte plt_header[PLT_HEADER_SIZE] = |
| 521 | { |
| 522 | 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ |
| 523 | 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ |
| 524 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ |
| 525 | 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ |
| 526 | 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ |
| 527 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ |
| 528 | 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ |
| 529 | 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ |
| 530 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ |
| 531 | }; |
| 532 | |
| 533 | static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = |
| 534 | { |
| 535 | 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ |
| 536 | 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ |
| 537 | 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ |
| 538 | }; |
| 539 | |
| 540 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = |
| 541 | { |
| 542 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ |
| 543 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ |
| 544 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ |
| 545 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ |
| 546 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ |
| 547 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ |
| 548 | }; |
| 549 | |
| 550 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 551 | |
| 552 | static const bfd_byte oor_brl[16] = |
| 553 | { |
| 554 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
| 555 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ |
| 556 | 0x00, 0x00, 0x00, 0xc0 |
| 557 | }; |
| 558 | |
| 559 | static const bfd_byte oor_ip[48] = |
| 560 | { |
| 561 | 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
| 562 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ |
| 563 | 0x01, 0x00, 0x00, 0x60, |
| 564 | 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ |
| 565 | 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ |
| 566 | 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ |
| 567 | 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ |
| 568 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ |
| 569 | 0x60, 0x00, 0x80, 0x00 /* br b6;; */ |
| 570 | }; |
| 571 | |
| 572 | static size_t oor_branch_size = sizeof (oor_brl); |
| 573 | |
| 574 | void |
| 575 | bfd_elfNN_ia64_after_parse (int itanium) |
| 576 | { |
| 577 | oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); |
| 578 | } |
| 579 | |
| 580 | #define BTYPE_SHIFT 6 |
| 581 | #define Y_SHIFT 26 |
| 582 | #define X6_SHIFT 27 |
| 583 | #define X4_SHIFT 27 |
| 584 | #define X3_SHIFT 33 |
| 585 | #define X2_SHIFT 31 |
| 586 | #define X_SHIFT 33 |
| 587 | #define OPCODE_SHIFT 37 |
| 588 | |
| 589 | #define OPCODE_BITS (0xfLL << OPCODE_SHIFT) |
| 590 | #define X6_BITS (0x3fLL << X6_SHIFT) |
| 591 | #define X4_BITS (0xfLL << X4_SHIFT) |
| 592 | #define X3_BITS (0x7LL << X3_SHIFT) |
| 593 | #define X2_BITS (0x3LL << X2_SHIFT) |
| 594 | #define X_BITS (0x1LL << X_SHIFT) |
| 595 | #define Y_BITS (0x1LL << Y_SHIFT) |
| 596 | #define BTYPE_BITS (0x7LL << BTYPE_SHIFT) |
| 597 | #define PREDICATE_BITS (0x3fLL) |
| 598 | |
| 599 | #define IS_NOP_B(i) \ |
| 600 | (((i) & (OPCODE_BITS | X6_BITS)) == (2LL << OPCODE_SHIFT)) |
| 601 | #define IS_NOP_F(i) \ |
| 602 | (((i) & (OPCODE_BITS | X_BITS | X6_BITS | Y_BITS)) \ |
| 603 | == (0x1LL << X6_SHIFT)) |
| 604 | #define IS_NOP_I(i) \ |
| 605 | (((i) & (OPCODE_BITS | X3_BITS | X6_BITS | Y_BITS)) \ |
| 606 | == (0x1LL << X6_SHIFT)) |
| 607 | #define IS_NOP_M(i) \ |
| 608 | (((i) & (OPCODE_BITS | X3_BITS | X2_BITS | X4_BITS | Y_BITS)) \ |
| 609 | == (0x1LL << X4_SHIFT)) |
| 610 | #define IS_BR_COND(i) \ |
| 611 | (((i) & (OPCODE_BITS | BTYPE_BITS)) == (0x4LL << OPCODE_SHIFT)) |
| 612 | #define IS_BR_CALL(i) \ |
| 613 | (((i) & OPCODE_BITS) == (0x5LL << OPCODE_SHIFT)) |
| 614 | |
| 615 | static bfd_boolean |
| 616 | elfNN_ia64_relax_br (bfd_byte *contents, bfd_vma off) |
| 617 | { |
| 618 | unsigned int template, mlx; |
| 619 | bfd_vma t0, t1, s0, s1, s2, br_code; |
| 620 | long br_slot; |
| 621 | bfd_byte *hit_addr; |
| 622 | |
| 623 | hit_addr = (bfd_byte *) (contents + off); |
| 624 | br_slot = (long) hit_addr & 0x3; |
| 625 | hit_addr -= br_slot; |
| 626 | t0 = bfd_getl64 (hit_addr + 0); |
| 627 | t1 = bfd_getl64 (hit_addr + 8); |
| 628 | |
| 629 | /* Check if we can turn br into brl. A label is always at the start |
| 630 | of the bundle. Even if there are predicates on NOPs, we still |
| 631 | perform this optimization. */ |
| 632 | template = t0 & 0x1e; |
| 633 | s0 = (t0 >> 5) & 0x1ffffffffffLL; |
| 634 | s1 = ((t0 >> 46) | (t1 << 18)) & 0x1ffffffffffLL; |
| 635 | s2 = (t1 >> 23) & 0x1ffffffffffLL; |
| 636 | switch (br_slot) |
| 637 | { |
| 638 | case 0: |
| 639 | /* Check if slot 1 and slot 2 are NOPs. Possible template is |
| 640 | BBB. We only need to check nop.b. */ |
| 641 | if (!(IS_NOP_B (s1) && IS_NOP_B (s2))) |
| 642 | return FALSE; |
| 643 | br_code = s0; |
| 644 | break; |
| 645 | case 1: |
| 646 | /* Check if slot 2 is NOP. Possible templates are MBB and BBB. |
| 647 | For BBB, slot 0 also has to be nop.b. */ |
| 648 | if (!((template == 0x12 /* MBB */ |
| 649 | && IS_NOP_B (s2)) |
| 650 | || (template == 0x16 /* BBB */ |
| 651 | && IS_NOP_B (s0) |
| 652 | && IS_NOP_B (s2)))) |
| 653 | return FALSE; |
| 654 | br_code = s1; |
| 655 | break; |
| 656 | case 2: |
| 657 | /* Check if slot 1 is NOP. Possible templates are MIB, MBB, BBB, |
| 658 | MMB and MFB. For BBB, slot 0 also has to be nop.b. */ |
| 659 | if (!((template == 0x10 /* MIB */ |
| 660 | && IS_NOP_I (s1)) |
| 661 | || (template == 0x12 /* MBB */ |
| 662 | && IS_NOP_B (s1)) |
| 663 | || (template == 0x16 /* BBB */ |
| 664 | && IS_NOP_B (s0) |
| 665 | && IS_NOP_B (s1)) |
| 666 | || (template == 0x18 /* MMB */ |
| 667 | && IS_NOP_M (s1)) |
| 668 | || (template == 0x1c /* MFB */ |
| 669 | && IS_NOP_F (s1)))) |
| 670 | return FALSE; |
| 671 | br_code = s2; |
| 672 | break; |
| 673 | default: |
| 674 | /* It should never happen. */ |
| 675 | abort (); |
| 676 | } |
| 677 | |
| 678 | /* We can turn br.cond/br.call into brl.cond/brl.call. */ |
| 679 | if (!(IS_BR_COND (br_code) || IS_BR_CALL (br_code))) |
| 680 | return FALSE; |
| 681 | |
| 682 | /* Turn br into brl by setting bit 40. */ |
| 683 | br_code |= 0x1LL << 40; |
| 684 | |
| 685 | /* Turn the old bundle into a MLX bundle with the same stop-bit |
| 686 | variety. */ |
| 687 | if (t0 & 0x1) |
| 688 | mlx = 0x5; |
| 689 | else |
| 690 | mlx = 0x4; |
| 691 | |
| 692 | if (template == 0x16) |
| 693 | { |
| 694 | /* For BBB, we need to put nop.m in slot 0. We keep the original |
| 695 | predicate only if slot 0 isn't br. */ |
| 696 | if (br_slot == 0) |
| 697 | t0 = 0LL; |
| 698 | else |
| 699 | t0 &= PREDICATE_BITS << 5; |
| 700 | t0 |= 0x1LL << (X4_SHIFT + 5); |
| 701 | } |
| 702 | else |
| 703 | { |
| 704 | /* Keep the original instruction in slot 0. */ |
| 705 | t0 &= 0x1ffffffffffLL << 5; |
| 706 | } |
| 707 | |
| 708 | t0 |= mlx; |
| 709 | |
| 710 | /* Put brl in slot 1. */ |
| 711 | t1 = br_code << 23; |
| 712 | |
| 713 | bfd_putl64 (t0, hit_addr); |
| 714 | bfd_putl64 (t1, hit_addr + 8); |
| 715 | return TRUE; |
| 716 | } |
| 717 | |
| 718 | static void |
| 719 | elfNN_ia64_relax_brl (bfd_byte *contents, bfd_vma off) |
| 720 | { |
| 721 | int template; |
| 722 | bfd_byte *hit_addr; |
| 723 | bfd_vma t0, t1, i0, i1, i2; |
| 724 | |
| 725 | hit_addr = (bfd_byte *) (contents + off); |
| 726 | hit_addr -= (long) hit_addr & 0x3; |
| 727 | t0 = bfd_getl64 (hit_addr); |
| 728 | t1 = bfd_getl64 (hit_addr + 8); |
| 729 | |
| 730 | /* Keep the instruction in slot 0. */ |
| 731 | i0 = (t0 >> 5) & 0x1ffffffffffLL; |
| 732 | /* Use nop.b for slot 1. */ |
| 733 | i1 = 0x4000000000LL; |
| 734 | /* For slot 2, turn brl into br by masking out bit 40. */ |
| 735 | i2 = (t1 >> 23) & 0x0ffffffffffLL; |
| 736 | |
| 737 | /* Turn a MLX bundle into a MBB bundle with the same stop-bit |
| 738 | variety. */ |
| 739 | if (t0 & 0x1) |
| 740 | template = 0x13; |
| 741 | else |
| 742 | template = 0x12; |
| 743 | t0 = (i1 << 46) | (i0 << 5) | template; |
| 744 | t1 = (i2 << 23) | (i1 >> 18); |
| 745 | |
| 746 | bfd_putl64 (t0, hit_addr); |
| 747 | bfd_putl64 (t1, hit_addr + 8); |
| 748 | } |
| 749 | |
| 750 | /* Rename some of the generic section flags to better document how they |
| 751 | are used here. */ |
| 752 | #define skip_relax_pass_0 need_finalize_relax |
| 753 | #define skip_relax_pass_1 has_gp_reloc |
| 754 | |
| 755 | \f |
| 756 | /* These functions do relaxation for IA-64 ELF. */ |
| 757 | |
| 758 | static bfd_boolean |
| 759 | elfNN_ia64_relax_section (bfd *abfd, asection *sec, |
| 760 | struct bfd_link_info *link_info, |
| 761 | bfd_boolean *again) |
| 762 | { |
| 763 | struct one_fixup |
| 764 | { |
| 765 | struct one_fixup *next; |
| 766 | asection *tsec; |
| 767 | bfd_vma toff; |
| 768 | bfd_vma trampoff; |
| 769 | }; |
| 770 | |
| 771 | Elf_Internal_Shdr *symtab_hdr; |
| 772 | Elf_Internal_Rela *internal_relocs; |
| 773 | Elf_Internal_Rela *irel, *irelend; |
| 774 | bfd_byte *contents; |
| 775 | Elf_Internal_Sym *isymbuf = NULL; |
| 776 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 777 | struct one_fixup *fixups = NULL; |
| 778 | bfd_boolean changed_contents = FALSE; |
| 779 | bfd_boolean changed_relocs = FALSE; |
| 780 | bfd_boolean changed_got = FALSE; |
| 781 | bfd_boolean skip_relax_pass_0 = TRUE; |
| 782 | bfd_boolean skip_relax_pass_1 = TRUE; |
| 783 | bfd_vma gp = 0; |
| 784 | |
| 785 | /* Assume we're not going to change any sizes, and we'll only need |
| 786 | one pass. */ |
| 787 | *again = FALSE; |
| 788 | |
| 789 | /* Don't even try to relax for non-ELF outputs. */ |
| 790 | if (!is_elf_hash_table (link_info->hash)) |
| 791 | return FALSE; |
| 792 | |
| 793 | /* Nothing to do if there are no relocations or there is no need for |
| 794 | the current pass. */ |
| 795 | if ((sec->flags & SEC_RELOC) == 0 |
| 796 | || sec->reloc_count == 0 |
| 797 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) |
| 798 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) |
| 799 | return TRUE; |
| 800 | |
| 801 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 802 | |
| 803 | /* Load the relocations for this section. */ |
| 804 | internal_relocs = (_bfd_elf_link_read_relocs |
| 805 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| 806 | link_info->keep_memory)); |
| 807 | if (internal_relocs == NULL) |
| 808 | return FALSE; |
| 809 | |
| 810 | ia64_info = elfNN_ia64_hash_table (link_info); |
| 811 | irelend = internal_relocs + sec->reloc_count; |
| 812 | |
| 813 | /* Get the section contents. */ |
| 814 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 815 | contents = elf_section_data (sec)->this_hdr.contents; |
| 816 | else |
| 817 | { |
| 818 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 819 | goto error_return; |
| 820 | } |
| 821 | |
| 822 | for (irel = internal_relocs; irel < irelend; irel++) |
| 823 | { |
| 824 | unsigned long r_type = ELFNN_R_TYPE (irel->r_info); |
| 825 | bfd_vma symaddr, reladdr, trampoff, toff, roff; |
| 826 | asection *tsec; |
| 827 | struct one_fixup *f; |
| 828 | bfd_size_type amt; |
| 829 | bfd_boolean is_branch; |
| 830 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 831 | char symtype; |
| 832 | |
| 833 | switch (r_type) |
| 834 | { |
| 835 | case R_IA64_PCREL21B: |
| 836 | case R_IA64_PCREL21BI: |
| 837 | case R_IA64_PCREL21M: |
| 838 | case R_IA64_PCREL21F: |
| 839 | /* In pass 1, all br relaxations are done. We can skip it. */ |
| 840 | if (link_info->relax_pass == 1) |
| 841 | continue; |
| 842 | skip_relax_pass_0 = FALSE; |
| 843 | is_branch = TRUE; |
| 844 | break; |
| 845 | |
| 846 | case R_IA64_PCREL60B: |
| 847 | /* We can't optimize brl to br in pass 0 since br relaxations |
| 848 | will increase the code size. Defer it to pass 1. */ |
| 849 | if (link_info->relax_pass == 0) |
| 850 | { |
| 851 | skip_relax_pass_1 = FALSE; |
| 852 | continue; |
| 853 | } |
| 854 | is_branch = TRUE; |
| 855 | break; |
| 856 | |
| 857 | case R_IA64_LTOFF22X: |
| 858 | case R_IA64_LDXMOV: |
| 859 | /* We can't relax ldx/mov in pass 0 since br relaxations will |
| 860 | increase the code size. Defer it to pass 1. */ |
| 861 | if (link_info->relax_pass == 0) |
| 862 | { |
| 863 | skip_relax_pass_1 = FALSE; |
| 864 | continue; |
| 865 | } |
| 866 | is_branch = FALSE; |
| 867 | break; |
| 868 | |
| 869 | default: |
| 870 | continue; |
| 871 | } |
| 872 | |
| 873 | /* Get the value of the symbol referred to by the reloc. */ |
| 874 | if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 875 | { |
| 876 | /* A local symbol. */ |
| 877 | Elf_Internal_Sym *isym; |
| 878 | |
| 879 | /* Read this BFD's local symbols. */ |
| 880 | if (isymbuf == NULL) |
| 881 | { |
| 882 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 883 | if (isymbuf == NULL) |
| 884 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 885 | symtab_hdr->sh_info, 0, |
| 886 | NULL, NULL, NULL); |
| 887 | if (isymbuf == 0) |
| 888 | goto error_return; |
| 889 | } |
| 890 | |
| 891 | isym = isymbuf + ELFNN_R_SYM (irel->r_info); |
| 892 | if (isym->st_shndx == SHN_UNDEF) |
| 893 | continue; /* We can't do anything with undefined symbols. */ |
| 894 | else if (isym->st_shndx == SHN_ABS) |
| 895 | tsec = bfd_abs_section_ptr; |
| 896 | else if (isym->st_shndx == SHN_COMMON) |
| 897 | tsec = bfd_com_section_ptr; |
| 898 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) |
| 899 | tsec = bfd_com_section_ptr; |
| 900 | else |
| 901 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 902 | |
| 903 | toff = isym->st_value; |
| 904 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); |
| 905 | symtype = ELF_ST_TYPE (isym->st_info); |
| 906 | } |
| 907 | else |
| 908 | { |
| 909 | unsigned long indx; |
| 910 | struct elf_link_hash_entry *h; |
| 911 | |
| 912 | indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 913 | h = elf_sym_hashes (abfd)[indx]; |
| 914 | BFD_ASSERT (h != NULL); |
| 915 | |
| 916 | while (h->root.type == bfd_link_hash_indirect |
| 917 | || h->root.type == bfd_link_hash_warning) |
| 918 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 919 | |
| 920 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); |
| 921 | |
| 922 | /* For branches to dynamic symbols, we're interested instead |
| 923 | in a branch to the PLT entry. */ |
| 924 | if (is_branch && dyn_i && dyn_i->want_plt2) |
| 925 | { |
| 926 | /* Internal branches shouldn't be sent to the PLT. |
| 927 | Leave this for now and we'll give an error later. */ |
| 928 | if (r_type != R_IA64_PCREL21B) |
| 929 | continue; |
| 930 | |
| 931 | tsec = ia64_info->plt_sec; |
| 932 | toff = dyn_i->plt2_offset; |
| 933 | BFD_ASSERT (irel->r_addend == 0); |
| 934 | } |
| 935 | |
| 936 | /* Can't do anything else with dynamic symbols. */ |
| 937 | else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) |
| 938 | continue; |
| 939 | |
| 940 | else |
| 941 | { |
| 942 | /* We can't do anything with undefined symbols. */ |
| 943 | if (h->root.type == bfd_link_hash_undefined |
| 944 | || h->root.type == bfd_link_hash_undefweak) |
| 945 | continue; |
| 946 | |
| 947 | tsec = h->root.u.def.section; |
| 948 | toff = h->root.u.def.value; |
| 949 | } |
| 950 | |
| 951 | symtype = h->type; |
| 952 | } |
| 953 | |
| 954 | if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE) |
| 955 | { |
| 956 | /* At this stage in linking, no SEC_MERGE symbol has been |
| 957 | adjusted, so all references to such symbols need to be |
| 958 | passed through _bfd_merged_section_offset. (Later, in |
| 959 | relocate_section, all SEC_MERGE symbols *except* for |
| 960 | section symbols have been adjusted.) |
| 961 | |
| 962 | gas may reduce relocations against symbols in SEC_MERGE |
| 963 | sections to a relocation against the section symbol when |
| 964 | the original addend was zero. When the reloc is against |
| 965 | a section symbol we should include the addend in the |
| 966 | offset passed to _bfd_merged_section_offset, since the |
| 967 | location of interest is the original symbol. On the |
| 968 | other hand, an access to "sym+addend" where "sym" is not |
| 969 | a section symbol should not include the addend; Such an |
| 970 | access is presumed to be an offset from "sym"; The |
| 971 | location of interest is just "sym". */ |
| 972 | if (symtype == STT_SECTION) |
| 973 | toff += irel->r_addend; |
| 974 | |
| 975 | toff = _bfd_merged_section_offset (abfd, &tsec, |
| 976 | elf_section_data (tsec)->sec_info, |
| 977 | toff); |
| 978 | |
| 979 | if (symtype != STT_SECTION) |
| 980 | toff += irel->r_addend; |
| 981 | } |
| 982 | else |
| 983 | toff += irel->r_addend; |
| 984 | |
| 985 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
| 986 | |
| 987 | roff = irel->r_offset; |
| 988 | |
| 989 | if (is_branch) |
| 990 | { |
| 991 | bfd_signed_vma offset; |
| 992 | |
| 993 | reladdr = (sec->output_section->vma |
| 994 | + sec->output_offset |
| 995 | + roff) & (bfd_vma) -4; |
| 996 | |
| 997 | /* If the branch is in range, no need to do anything. */ |
| 998 | if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000 |
| 999 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
| 1000 | { |
| 1001 | /* If the 60-bit branch is in 21-bit range, optimize it. */ |
| 1002 | if (r_type == R_IA64_PCREL60B) |
| 1003 | { |
| 1004 | elfNN_ia64_relax_brl (contents, roff); |
| 1005 | |
| 1006 | irel->r_info |
| 1007 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1008 | R_IA64_PCREL21B); |
| 1009 | |
| 1010 | /* If the original relocation offset points to slot |
| 1011 | 1, change it to slot 2. */ |
| 1012 | if ((irel->r_offset & 3) == 1) |
| 1013 | irel->r_offset += 1; |
| 1014 | } |
| 1015 | |
| 1016 | continue; |
| 1017 | } |
| 1018 | else if (r_type == R_IA64_PCREL60B) |
| 1019 | continue; |
| 1020 | else if (elfNN_ia64_relax_br (contents, roff)) |
| 1021 | { |
| 1022 | irel->r_info |
| 1023 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1024 | R_IA64_PCREL60B); |
| 1025 | |
| 1026 | /* Make the relocation offset point to slot 1. */ |
| 1027 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; |
| 1028 | continue; |
| 1029 | } |
| 1030 | |
| 1031 | /* We can't put a trampoline in a .init/.fini section. Issue |
| 1032 | an error. */ |
| 1033 | if (strcmp (sec->output_section->name, ".init") == 0 |
| 1034 | || strcmp (sec->output_section->name, ".fini") == 0) |
| 1035 | { |
| 1036 | (*_bfd_error_handler) |
| 1037 | (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), |
| 1038 | sec->owner, sec, (unsigned long) roff); |
| 1039 | bfd_set_error (bfd_error_bad_value); |
| 1040 | goto error_return; |
| 1041 | } |
| 1042 | |
| 1043 | /* If the branch and target are in the same section, you've |
| 1044 | got one honking big section and we can't help you unless |
| 1045 | you are branching backwards. You'll get an error message |
| 1046 | later. */ |
| 1047 | if (tsec == sec && toff > roff) |
| 1048 | continue; |
| 1049 | |
| 1050 | /* Look for an existing fixup to this address. */ |
| 1051 | for (f = fixups; f ; f = f->next) |
| 1052 | if (f->tsec == tsec && f->toff == toff) |
| 1053 | break; |
| 1054 | |
| 1055 | if (f == NULL) |
| 1056 | { |
| 1057 | /* Two alternatives: If it's a branch to a PLT entry, we can |
| 1058 | make a copy of the FULL_PLT entry. Otherwise, we'll have |
| 1059 | to use a `brl' insn to get where we're going. */ |
| 1060 | |
| 1061 | size_t size; |
| 1062 | |
| 1063 | if (tsec == ia64_info->plt_sec) |
| 1064 | size = sizeof (plt_full_entry); |
| 1065 | else |
| 1066 | size = oor_branch_size; |
| 1067 | |
| 1068 | /* Resize the current section to make room for the new branch. */ |
| 1069 | trampoff = (sec->size + 15) & (bfd_vma) -16; |
| 1070 | |
| 1071 | /* If trampoline is out of range, there is nothing we |
| 1072 | can do. */ |
| 1073 | offset = trampoff - (roff & (bfd_vma) -4); |
| 1074 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 1075 | continue; |
| 1076 | |
| 1077 | amt = trampoff + size; |
| 1078 | contents = (bfd_byte *) bfd_realloc (contents, amt); |
| 1079 | if (contents == NULL) |
| 1080 | goto error_return; |
| 1081 | sec->size = amt; |
| 1082 | |
| 1083 | if (tsec == ia64_info->plt_sec) |
| 1084 | { |
| 1085 | memcpy (contents + trampoff, plt_full_entry, size); |
| 1086 | |
| 1087 | /* Hijack the old relocation for use as the PLTOFF reloc. */ |
| 1088 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1089 | R_IA64_PLTOFF22); |
| 1090 | irel->r_offset = trampoff; |
| 1091 | } |
| 1092 | else |
| 1093 | { |
| 1094 | if (size == sizeof (oor_ip)) |
| 1095 | { |
| 1096 | memcpy (contents + trampoff, oor_ip, size); |
| 1097 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1098 | R_IA64_PCREL64I); |
| 1099 | irel->r_addend -= 16; |
| 1100 | irel->r_offset = trampoff + 2; |
| 1101 | } |
| 1102 | else |
| 1103 | { |
| 1104 | memcpy (contents + trampoff, oor_brl, size); |
| 1105 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1106 | R_IA64_PCREL60B); |
| 1107 | irel->r_offset = trampoff + 2; |
| 1108 | } |
| 1109 | |
| 1110 | } |
| 1111 | |
| 1112 | /* Record the fixup so we don't do it again this section. */ |
| 1113 | f = (struct one_fixup *) |
| 1114 | bfd_malloc ((bfd_size_type) sizeof (*f)); |
| 1115 | f->next = fixups; |
| 1116 | f->tsec = tsec; |
| 1117 | f->toff = toff; |
| 1118 | f->trampoff = trampoff; |
| 1119 | fixups = f; |
| 1120 | } |
| 1121 | else |
| 1122 | { |
| 1123 | /* If trampoline is out of range, there is nothing we |
| 1124 | can do. */ |
| 1125 | offset = f->trampoff - (roff & (bfd_vma) -4); |
| 1126 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 1127 | continue; |
| 1128 | |
| 1129 | /* Nop out the reloc, since we're finalizing things here. */ |
| 1130 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); |
| 1131 | } |
| 1132 | |
| 1133 | /* Fix up the existing branch to hit the trampoline. */ |
| 1134 | if (elfNN_ia64_install_value (contents + roff, offset, r_type) |
| 1135 | != bfd_reloc_ok) |
| 1136 | goto error_return; |
| 1137 | |
| 1138 | changed_contents = TRUE; |
| 1139 | changed_relocs = TRUE; |
| 1140 | } |
| 1141 | else |
| 1142 | { |
| 1143 | /* Fetch the gp. */ |
| 1144 | if (gp == 0) |
| 1145 | { |
| 1146 | bfd *obfd = sec->output_section->owner; |
| 1147 | gp = _bfd_get_gp_value (obfd); |
| 1148 | if (gp == 0) |
| 1149 | { |
| 1150 | if (!elfNN_ia64_choose_gp (obfd, link_info)) |
| 1151 | goto error_return; |
| 1152 | gp = _bfd_get_gp_value (obfd); |
| 1153 | } |
| 1154 | } |
| 1155 | |
| 1156 | /* If the data is out of range, do nothing. */ |
| 1157 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 |
| 1158 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) |
| 1159 | continue; |
| 1160 | |
| 1161 | if (r_type == R_IA64_LTOFF22X) |
| 1162 | { |
| 1163 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), |
| 1164 | R_IA64_GPREL22); |
| 1165 | changed_relocs = TRUE; |
| 1166 | if (dyn_i->want_gotx) |
| 1167 | { |
| 1168 | dyn_i->want_gotx = 0; |
| 1169 | changed_got |= !dyn_i->want_got; |
| 1170 | } |
| 1171 | } |
| 1172 | else |
| 1173 | { |
| 1174 | elfNN_ia64_relax_ldxmov (contents, roff); |
| 1175 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); |
| 1176 | changed_contents = TRUE; |
| 1177 | changed_relocs = TRUE; |
| 1178 | } |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | /* ??? If we created fixups, this may push the code segment large |
| 1183 | enough that the data segment moves, which will change the GP. |
| 1184 | Reset the GP so that we re-calculate next round. We need to |
| 1185 | do this at the _beginning_ of the next round; now will not do. */ |
| 1186 | |
| 1187 | /* Clean up and go home. */ |
| 1188 | while (fixups) |
| 1189 | { |
| 1190 | struct one_fixup *f = fixups; |
| 1191 | fixups = fixups->next; |
| 1192 | free (f); |
| 1193 | } |
| 1194 | |
| 1195 | if (isymbuf != NULL |
| 1196 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
| 1197 | { |
| 1198 | if (! link_info->keep_memory) |
| 1199 | free (isymbuf); |
| 1200 | else |
| 1201 | { |
| 1202 | /* Cache the symbols for elf_link_input_bfd. */ |
| 1203 | symtab_hdr->contents = (unsigned char *) isymbuf; |
| 1204 | } |
| 1205 | } |
| 1206 | |
| 1207 | if (contents != NULL |
| 1208 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 1209 | { |
| 1210 | if (!changed_contents && !link_info->keep_memory) |
| 1211 | free (contents); |
| 1212 | else |
| 1213 | { |
| 1214 | /* Cache the section contents for elf_link_input_bfd. */ |
| 1215 | elf_section_data (sec)->this_hdr.contents = contents; |
| 1216 | } |
| 1217 | } |
| 1218 | |
| 1219 | if (elf_section_data (sec)->relocs != internal_relocs) |
| 1220 | { |
| 1221 | if (!changed_relocs) |
| 1222 | free (internal_relocs); |
| 1223 | else |
| 1224 | elf_section_data (sec)->relocs = internal_relocs; |
| 1225 | } |
| 1226 | |
| 1227 | if (changed_got) |
| 1228 | { |
| 1229 | struct elfNN_ia64_allocate_data data; |
| 1230 | data.info = link_info; |
| 1231 | data.ofs = 0; |
| 1232 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; |
| 1233 | |
| 1234 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); |
| 1235 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); |
| 1236 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); |
| 1237 | ia64_info->got_sec->size = data.ofs; |
| 1238 | |
| 1239 | if (ia64_info->root.dynamic_sections_created |
| 1240 | && ia64_info->rel_got_sec != NULL) |
| 1241 | { |
| 1242 | /* Resize .rela.got. */ |
| 1243 | ia64_info->rel_got_sec->size = 0; |
| 1244 | if (link_info->shared |
| 1245 | && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
| 1246 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 1247 | data.only_got = TRUE; |
| 1248 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, |
| 1249 | &data); |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | if (link_info->relax_pass == 0) |
| 1254 | { |
| 1255 | /* Pass 0 is only needed to relax br. */ |
| 1256 | sec->skip_relax_pass_0 = skip_relax_pass_0; |
| 1257 | sec->skip_relax_pass_1 = skip_relax_pass_1; |
| 1258 | } |
| 1259 | |
| 1260 | *again = changed_contents || changed_relocs; |
| 1261 | return TRUE; |
| 1262 | |
| 1263 | error_return: |
| 1264 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
| 1265 | free (isymbuf); |
| 1266 | if (contents != NULL |
| 1267 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 1268 | free (contents); |
| 1269 | if (internal_relocs != NULL |
| 1270 | && elf_section_data (sec)->relocs != internal_relocs) |
| 1271 | free (internal_relocs); |
| 1272 | return FALSE; |
| 1273 | } |
| 1274 | #undef skip_relax_pass_0 |
| 1275 | #undef skip_relax_pass_1 |
| 1276 | |
| 1277 | static void |
| 1278 | elfNN_ia64_relax_ldxmov (bfd_byte *contents, bfd_vma off) |
| 1279 | { |
| 1280 | int shift, r1, r3; |
| 1281 | bfd_vma dword, insn; |
| 1282 | |
| 1283 | switch ((int)off & 0x3) |
| 1284 | { |
| 1285 | case 0: shift = 5; break; |
| 1286 | case 1: shift = 14; off += 3; break; |
| 1287 | case 2: shift = 23; off += 6; break; |
| 1288 | default: |
| 1289 | abort (); |
| 1290 | } |
| 1291 | |
| 1292 | dword = bfd_getl64 (contents + off); |
| 1293 | insn = (dword >> shift) & 0x1ffffffffffLL; |
| 1294 | |
| 1295 | r1 = (insn >> 6) & 127; |
| 1296 | r3 = (insn >> 20) & 127; |
| 1297 | if (r1 == r3) |
| 1298 | insn = 0x8000000; /* nop */ |
| 1299 | else |
| 1300 | insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */ |
| 1301 | |
| 1302 | dword &= ~(0x1ffffffffffLL << shift); |
| 1303 | dword |= (insn << shift); |
| 1304 | bfd_putl64 (dword, contents + off); |
| 1305 | } |
| 1306 | \f |
| 1307 | /* Return TRUE if NAME is an unwind table section name. */ |
| 1308 | |
| 1309 | static inline bfd_boolean |
| 1310 | is_unwind_section_name (bfd *abfd, const char *name) |
| 1311 | { |
| 1312 | if (elfNN_ia64_hpux_vec (abfd->xvec) |
| 1313 | && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) |
| 1314 | return FALSE; |
| 1315 | |
| 1316 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) |
| 1317 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) |
| 1318 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); |
| 1319 | } |
| 1320 | |
| 1321 | /* Handle an IA-64 specific section when reading an object file. This |
| 1322 | is called when bfd_section_from_shdr finds a section with an unknown |
| 1323 | type. */ |
| 1324 | |
| 1325 | static bfd_boolean |
| 1326 | elfNN_ia64_section_from_shdr (bfd *abfd, |
| 1327 | Elf_Internal_Shdr *hdr, |
| 1328 | const char *name, |
| 1329 | int shindex) |
| 1330 | { |
| 1331 | asection *newsect; |
| 1332 | |
| 1333 | /* There ought to be a place to keep ELF backend specific flags, but |
| 1334 | at the moment there isn't one. We just keep track of the |
| 1335 | sections by their name, instead. Fortunately, the ABI gives |
| 1336 | suggested names for all the MIPS specific sections, so we will |
| 1337 | probably get away with this. */ |
| 1338 | switch (hdr->sh_type) |
| 1339 | { |
| 1340 | case SHT_IA_64_UNWIND: |
| 1341 | case SHT_IA_64_HP_OPT_ANOT: |
| 1342 | break; |
| 1343 | |
| 1344 | case SHT_IA_64_EXT: |
| 1345 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) |
| 1346 | return FALSE; |
| 1347 | break; |
| 1348 | |
| 1349 | default: |
| 1350 | return FALSE; |
| 1351 | } |
| 1352 | |
| 1353 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
| 1354 | return FALSE; |
| 1355 | newsect = hdr->bfd_section; |
| 1356 | |
| 1357 | return TRUE; |
| 1358 | } |
| 1359 | |
| 1360 | /* Convert IA-64 specific section flags to bfd internal section flags. */ |
| 1361 | |
| 1362 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV |
| 1363 | flag. */ |
| 1364 | |
| 1365 | static bfd_boolean |
| 1366 | elfNN_ia64_section_flags (flagword *flags, |
| 1367 | const Elf_Internal_Shdr *hdr) |
| 1368 | { |
| 1369 | if (hdr->sh_flags & SHF_IA_64_SHORT) |
| 1370 | *flags |= SEC_SMALL_DATA; |
| 1371 | |
| 1372 | return TRUE; |
| 1373 | } |
| 1374 | |
| 1375 | /* Set the correct type for an IA-64 ELF section. We do this by the |
| 1376 | section name, which is a hack, but ought to work. */ |
| 1377 | |
| 1378 | static bfd_boolean |
| 1379 | elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, |
| 1380 | asection *sec) |
| 1381 | { |
| 1382 | register const char *name; |
| 1383 | |
| 1384 | name = bfd_get_section_name (abfd, sec); |
| 1385 | |
| 1386 | if (is_unwind_section_name (abfd, name)) |
| 1387 | { |
| 1388 | /* We don't have the sections numbered at this point, so sh_info |
| 1389 | is set later, in elfNN_ia64_final_write_processing. */ |
| 1390 | hdr->sh_type = SHT_IA_64_UNWIND; |
| 1391 | hdr->sh_flags |= SHF_LINK_ORDER; |
| 1392 | } |
| 1393 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) |
| 1394 | hdr->sh_type = SHT_IA_64_EXT; |
| 1395 | else if (strcmp (name, ".HP.opt_annot") == 0) |
| 1396 | hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; |
| 1397 | else if (strcmp (name, ".reloc") == 0) |
| 1398 | /* This is an ugly, but unfortunately necessary hack that is |
| 1399 | needed when producing EFI binaries on IA-64. It tells |
| 1400 | elf.c:elf_fake_sections() not to consider ".reloc" as a section |
| 1401 | containing ELF relocation info. We need this hack in order to |
| 1402 | be able to generate ELF binaries that can be translated into |
| 1403 | EFI applications (which are essentially COFF objects). Those |
| 1404 | files contain a COFF ".reloc" section inside an ELFNN object, |
| 1405 | which would normally cause BFD to segfault because it would |
| 1406 | attempt to interpret this section as containing relocation |
| 1407 | entries for section "oc". With this hack enabled, ".reloc" |
| 1408 | will be treated as a normal data section, which will avoid the |
| 1409 | segfault. However, you won't be able to create an ELFNN binary |
| 1410 | with a section named "oc" that needs relocations, but that's |
| 1411 | the kind of ugly side-effects you get when detecting section |
| 1412 | types based on their names... In practice, this limitation is |
| 1413 | unlikely to bite. */ |
| 1414 | hdr->sh_type = SHT_PROGBITS; |
| 1415 | |
| 1416 | if (sec->flags & SEC_SMALL_DATA) |
| 1417 | hdr->sh_flags |= SHF_IA_64_SHORT; |
| 1418 | |
| 1419 | /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ |
| 1420 | |
| 1421 | if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) |
| 1422 | hdr->sh_flags |= SHF_IA_64_HP_TLS; |
| 1423 | |
| 1424 | return TRUE; |
| 1425 | } |
| 1426 | |
| 1427 | /* The final processing done just before writing out an IA-64 ELF |
| 1428 | object file. */ |
| 1429 | |
| 1430 | static void |
| 1431 | elfNN_ia64_final_write_processing (bfd *abfd, |
| 1432 | bfd_boolean linker ATTRIBUTE_UNUSED) |
| 1433 | { |
| 1434 | Elf_Internal_Shdr *hdr; |
| 1435 | asection *s; |
| 1436 | |
| 1437 | for (s = abfd->sections; s; s = s->next) |
| 1438 | { |
| 1439 | hdr = &elf_section_data (s)->this_hdr; |
| 1440 | switch (hdr->sh_type) |
| 1441 | { |
| 1442 | case SHT_IA_64_UNWIND: |
| 1443 | /* The IA-64 processor-specific ABI requires setting sh_link |
| 1444 | to the unwind section, whereas HP-UX requires sh_info to |
| 1445 | do so. For maximum compatibility, we'll set both for |
| 1446 | now... */ |
| 1447 | hdr->sh_info = hdr->sh_link; |
| 1448 | break; |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | if (! elf_flags_init (abfd)) |
| 1453 | { |
| 1454 | unsigned long flags = 0; |
| 1455 | |
| 1456 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) |
| 1457 | flags |= EF_IA_64_BE; |
| 1458 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) |
| 1459 | flags |= EF_IA_64_ABI64; |
| 1460 | |
| 1461 | elf_elfheader(abfd)->e_flags = flags; |
| 1462 | elf_flags_init (abfd) = TRUE; |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | /* Hook called by the linker routine which adds symbols from an object |
| 1467 | file. We use it to put .comm items in .sbss, and not .bss. */ |
| 1468 | |
| 1469 | static bfd_boolean |
| 1470 | elfNN_ia64_add_symbol_hook (bfd *abfd, |
| 1471 | struct bfd_link_info *info, |
| 1472 | Elf_Internal_Sym *sym, |
| 1473 | const char **namep ATTRIBUTE_UNUSED, |
| 1474 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 1475 | asection **secp, |
| 1476 | bfd_vma *valp) |
| 1477 | { |
| 1478 | if (sym->st_shndx == SHN_COMMON |
| 1479 | && !info->relocatable |
| 1480 | && sym->st_size <= elf_gp_size (abfd)) |
| 1481 | { |
| 1482 | /* Common symbols less than or equal to -G nn bytes are |
| 1483 | automatically put into .sbss. */ |
| 1484 | |
| 1485 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 1486 | |
| 1487 | if (scomm == NULL) |
| 1488 | { |
| 1489 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
| 1490 | (SEC_ALLOC |
| 1491 | | SEC_IS_COMMON |
| 1492 | | SEC_LINKER_CREATED)); |
| 1493 | if (scomm == NULL) |
| 1494 | return FALSE; |
| 1495 | } |
| 1496 | |
| 1497 | *secp = scomm; |
| 1498 | *valp = sym->st_size; |
| 1499 | } |
| 1500 | |
| 1501 | return TRUE; |
| 1502 | } |
| 1503 | |
| 1504 | /* Return the number of additional phdrs we will need. */ |
| 1505 | |
| 1506 | static int |
| 1507 | elfNN_ia64_additional_program_headers (bfd *abfd, |
| 1508 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 1509 | { |
| 1510 | asection *s; |
| 1511 | int ret = 0; |
| 1512 | |
| 1513 | /* See if we need a PT_IA_64_ARCHEXT segment. */ |
| 1514 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); |
| 1515 | if (s && (s->flags & SEC_LOAD)) |
| 1516 | ++ret; |
| 1517 | |
| 1518 | /* Count how many PT_IA_64_UNWIND segments we need. */ |
| 1519 | for (s = abfd->sections; s; s = s->next) |
| 1520 | if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) |
| 1521 | ++ret; |
| 1522 | |
| 1523 | return ret; |
| 1524 | } |
| 1525 | |
| 1526 | static bfd_boolean |
| 1527 | elfNN_ia64_modify_segment_map (bfd *abfd, |
| 1528 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 1529 | { |
| 1530 | struct elf_segment_map *m, **pm; |
| 1531 | Elf_Internal_Shdr *hdr; |
| 1532 | asection *s; |
| 1533 | |
| 1534 | /* If we need a PT_IA_64_ARCHEXT segment, it must come before |
| 1535 | all PT_LOAD segments. */ |
| 1536 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); |
| 1537 | if (s && (s->flags & SEC_LOAD)) |
| 1538 | { |
| 1539 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
| 1540 | if (m->p_type == PT_IA_64_ARCHEXT) |
| 1541 | break; |
| 1542 | if (m == NULL) |
| 1543 | { |
| 1544 | m = ((struct elf_segment_map *) |
| 1545 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); |
| 1546 | if (m == NULL) |
| 1547 | return FALSE; |
| 1548 | |
| 1549 | m->p_type = PT_IA_64_ARCHEXT; |
| 1550 | m->count = 1; |
| 1551 | m->sections[0] = s; |
| 1552 | |
| 1553 | /* We want to put it after the PHDR and INTERP segments. */ |
| 1554 | pm = &elf_tdata (abfd)->segment_map; |
| 1555 | while (*pm != NULL |
| 1556 | && ((*pm)->p_type == PT_PHDR |
| 1557 | || (*pm)->p_type == PT_INTERP)) |
| 1558 | pm = &(*pm)->next; |
| 1559 | |
| 1560 | m->next = *pm; |
| 1561 | *pm = m; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | /* Install PT_IA_64_UNWIND segments, if needed. */ |
| 1566 | for (s = abfd->sections; s; s = s->next) |
| 1567 | { |
| 1568 | hdr = &elf_section_data (s)->this_hdr; |
| 1569 | if (hdr->sh_type != SHT_IA_64_UNWIND) |
| 1570 | continue; |
| 1571 | |
| 1572 | if (s && (s->flags & SEC_LOAD)) |
| 1573 | { |
| 1574 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
| 1575 | if (m->p_type == PT_IA_64_UNWIND) |
| 1576 | { |
| 1577 | int i; |
| 1578 | |
| 1579 | /* Look through all sections in the unwind segment |
| 1580 | for a match since there may be multiple sections |
| 1581 | to a segment. */ |
| 1582 | for (i = m->count - 1; i >= 0; --i) |
| 1583 | if (m->sections[i] == s) |
| 1584 | break; |
| 1585 | |
| 1586 | if (i >= 0) |
| 1587 | break; |
| 1588 | } |
| 1589 | |
| 1590 | if (m == NULL) |
| 1591 | { |
| 1592 | m = ((struct elf_segment_map *) |
| 1593 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); |
| 1594 | if (m == NULL) |
| 1595 | return FALSE; |
| 1596 | |
| 1597 | m->p_type = PT_IA_64_UNWIND; |
| 1598 | m->count = 1; |
| 1599 | m->sections[0] = s; |
| 1600 | m->next = NULL; |
| 1601 | |
| 1602 | /* We want to put it last. */ |
| 1603 | pm = &elf_tdata (abfd)->segment_map; |
| 1604 | while (*pm != NULL) |
| 1605 | pm = &(*pm)->next; |
| 1606 | *pm = m; |
| 1607 | } |
| 1608 | } |
| 1609 | } |
| 1610 | |
| 1611 | return TRUE; |
| 1612 | } |
| 1613 | |
| 1614 | /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of |
| 1615 | the input sections for each output section in the segment and testing |
| 1616 | for SHF_IA_64_NORECOV on each. */ |
| 1617 | |
| 1618 | static bfd_boolean |
| 1619 | elfNN_ia64_modify_program_headers (bfd *abfd, |
| 1620 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 1621 | { |
| 1622 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
| 1623 | struct elf_segment_map *m; |
| 1624 | Elf_Internal_Phdr *p; |
| 1625 | |
| 1626 | for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++) |
| 1627 | if (m->p_type == PT_LOAD) |
| 1628 | { |
| 1629 | int i; |
| 1630 | for (i = m->count - 1; i >= 0; --i) |
| 1631 | { |
| 1632 | struct bfd_link_order *order = m->sections[i]->map_head.link_order; |
| 1633 | |
| 1634 | while (order != NULL) |
| 1635 | { |
| 1636 | if (order->type == bfd_indirect_link_order) |
| 1637 | { |
| 1638 | asection *is = order->u.indirect.section; |
| 1639 | bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; |
| 1640 | if (flags & SHF_IA_64_NORECOV) |
| 1641 | { |
| 1642 | p->p_flags |= PF_IA_64_NORECOV; |
| 1643 | goto found; |
| 1644 | } |
| 1645 | } |
| 1646 | order = order->next; |
| 1647 | } |
| 1648 | } |
| 1649 | found:; |
| 1650 | } |
| 1651 | |
| 1652 | return TRUE; |
| 1653 | } |
| 1654 | |
| 1655 | /* According to the Tahoe assembler spec, all labels starting with a |
| 1656 | '.' are local. */ |
| 1657 | |
| 1658 | static bfd_boolean |
| 1659 | elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
| 1660 | const char *name) |
| 1661 | { |
| 1662 | return name[0] == '.'; |
| 1663 | } |
| 1664 | |
| 1665 | /* Should we do dynamic things to this symbol? */ |
| 1666 | |
| 1667 | static bfd_boolean |
| 1668 | elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, |
| 1669 | struct bfd_link_info *info, int r_type) |
| 1670 | { |
| 1671 | bfd_boolean ignore_protected |
| 1672 | = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ |
| 1673 | || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ |
| 1674 | |
| 1675 | return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); |
| 1676 | } |
| 1677 | \f |
| 1678 | static struct bfd_hash_entry* |
| 1679 | elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, |
| 1680 | struct bfd_hash_table *table, |
| 1681 | const char *string) |
| 1682 | { |
| 1683 | struct elfNN_ia64_link_hash_entry *ret; |
| 1684 | ret = (struct elfNN_ia64_link_hash_entry *) entry; |
| 1685 | |
| 1686 | /* Allocate the structure if it has not already been allocated by a |
| 1687 | subclass. */ |
| 1688 | if (!ret) |
| 1689 | ret = bfd_hash_allocate (table, sizeof (*ret)); |
| 1690 | |
| 1691 | if (!ret) |
| 1692 | return 0; |
| 1693 | |
| 1694 | /* Call the allocation method of the superclass. */ |
| 1695 | ret = ((struct elfNN_ia64_link_hash_entry *) |
| 1696 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 1697 | table, string)); |
| 1698 | |
| 1699 | ret->info = NULL; |
| 1700 | ret->count = 0; |
| 1701 | ret->sorted_count = 0; |
| 1702 | ret->size = 0; |
| 1703 | return (struct bfd_hash_entry *) ret; |
| 1704 | } |
| 1705 | |
| 1706 | static void |
| 1707 | elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, |
| 1708 | struct elf_link_hash_entry *xdir, |
| 1709 | struct elf_link_hash_entry *xind) |
| 1710 | { |
| 1711 | struct elfNN_ia64_link_hash_entry *dir, *ind; |
| 1712 | |
| 1713 | dir = (struct elfNN_ia64_link_hash_entry *) xdir; |
| 1714 | ind = (struct elfNN_ia64_link_hash_entry *) xind; |
| 1715 | |
| 1716 | /* Copy down any references that we may have already seen to the |
| 1717 | symbol which just became indirect. */ |
| 1718 | |
| 1719 | dir->root.ref_dynamic |= ind->root.ref_dynamic; |
| 1720 | dir->root.ref_regular |= ind->root.ref_regular; |
| 1721 | dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; |
| 1722 | dir->root.needs_plt |= ind->root.needs_plt; |
| 1723 | |
| 1724 | if (ind->root.root.type != bfd_link_hash_indirect) |
| 1725 | return; |
| 1726 | |
| 1727 | /* Copy over the got and plt data. This would have been done |
| 1728 | by check_relocs. */ |
| 1729 | |
| 1730 | if (ind->info != NULL) |
| 1731 | { |
| 1732 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 1733 | unsigned int count; |
| 1734 | |
| 1735 | if (dir->info) |
| 1736 | free (dir->info); |
| 1737 | |
| 1738 | dir->info = ind->info; |
| 1739 | dir->count = ind->count; |
| 1740 | dir->sorted_count = ind->sorted_count; |
| 1741 | dir->size = ind->size; |
| 1742 | |
| 1743 | ind->info = NULL; |
| 1744 | ind->count = 0; |
| 1745 | ind->sorted_count = 0; |
| 1746 | ind->size = 0; |
| 1747 | |
| 1748 | /* Fix up the dyn_sym_info pointers to the global symbol. */ |
| 1749 | for (count = dir->count, dyn_i = dir->info; |
| 1750 | count != 0; |
| 1751 | count--, dyn_i++) |
| 1752 | dyn_i->h = &dir->root; |
| 1753 | } |
| 1754 | |
| 1755 | /* Copy over the dynindx. */ |
| 1756 | |
| 1757 | if (ind->root.dynindx != -1) |
| 1758 | { |
| 1759 | if (dir->root.dynindx != -1) |
| 1760 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, |
| 1761 | dir->root.dynstr_index); |
| 1762 | dir->root.dynindx = ind->root.dynindx; |
| 1763 | dir->root.dynstr_index = ind->root.dynstr_index; |
| 1764 | ind->root.dynindx = -1; |
| 1765 | ind->root.dynstr_index = 0; |
| 1766 | } |
| 1767 | } |
| 1768 | |
| 1769 | static void |
| 1770 | elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, |
| 1771 | struct elf_link_hash_entry *xh, |
| 1772 | bfd_boolean force_local) |
| 1773 | { |
| 1774 | struct elfNN_ia64_link_hash_entry *h; |
| 1775 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 1776 | unsigned int count; |
| 1777 | |
| 1778 | h = (struct elfNN_ia64_link_hash_entry *)xh; |
| 1779 | |
| 1780 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); |
| 1781 | |
| 1782 | for (count = h->count, dyn_i = h->info; |
| 1783 | count != 0; |
| 1784 | count--, dyn_i++) |
| 1785 | { |
| 1786 | dyn_i->want_plt2 = 0; |
| 1787 | dyn_i->want_plt = 0; |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | /* Compute a hash of a local hash entry. */ |
| 1792 | |
| 1793 | static hashval_t |
| 1794 | elfNN_ia64_local_htab_hash (const void *ptr) |
| 1795 | { |
| 1796 | struct elfNN_ia64_local_hash_entry *entry |
| 1797 | = (struct elfNN_ia64_local_hash_entry *) ptr; |
| 1798 | |
| 1799 | return (((entry->id & 0xff) << 24) | ((entry->id & 0xff00) << 8)) |
| 1800 | ^ entry->r_sym ^ (entry->id >> 16); |
| 1801 | } |
| 1802 | |
| 1803 | /* Compare local hash entries. */ |
| 1804 | |
| 1805 | static int |
| 1806 | elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) |
| 1807 | { |
| 1808 | struct elfNN_ia64_local_hash_entry *entry1 |
| 1809 | = (struct elfNN_ia64_local_hash_entry *) ptr1; |
| 1810 | struct elfNN_ia64_local_hash_entry *entry2 |
| 1811 | = (struct elfNN_ia64_local_hash_entry *) ptr2; |
| 1812 | |
| 1813 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; |
| 1814 | } |
| 1815 | |
| 1816 | /* Create the derived linker hash table. The IA-64 ELF port uses this |
| 1817 | derived hash table to keep information specific to the IA-64 ElF |
| 1818 | linker (without using static variables). */ |
| 1819 | |
| 1820 | static struct bfd_link_hash_table* |
| 1821 | elfNN_ia64_hash_table_create (bfd *abfd) |
| 1822 | { |
| 1823 | struct elfNN_ia64_link_hash_table *ret; |
| 1824 | |
| 1825 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); |
| 1826 | if (!ret) |
| 1827 | return 0; |
| 1828 | |
| 1829 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 1830 | elfNN_ia64_new_elf_hash_entry, |
| 1831 | sizeof (struct elfNN_ia64_link_hash_entry))) |
| 1832 | { |
| 1833 | free (ret); |
| 1834 | return 0; |
| 1835 | } |
| 1836 | |
| 1837 | ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, |
| 1838 | elfNN_ia64_local_htab_eq, NULL); |
| 1839 | ret->loc_hash_memory = objalloc_create (); |
| 1840 | if (!ret->loc_hash_table || !ret->loc_hash_memory) |
| 1841 | { |
| 1842 | free (ret); |
| 1843 | return 0; |
| 1844 | } |
| 1845 | |
| 1846 | return &ret->root.root; |
| 1847 | } |
| 1848 | |
| 1849 | /* Free the global elfNN_ia64_dyn_sym_info array. */ |
| 1850 | |
| 1851 | static bfd_boolean |
| 1852 | elfNN_ia64_global_dyn_info_free (void **xentry, |
| 1853 | PTR unused ATTRIBUTE_UNUSED) |
| 1854 | { |
| 1855 | struct elfNN_ia64_link_hash_entry *entry |
| 1856 | = (struct elfNN_ia64_link_hash_entry *) xentry; |
| 1857 | |
| 1858 | if (entry->root.root.type == bfd_link_hash_warning) |
| 1859 | entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 1860 | |
| 1861 | if (entry->info) |
| 1862 | { |
| 1863 | free (entry->info); |
| 1864 | entry->info = NULL; |
| 1865 | entry->count = 0; |
| 1866 | entry->sorted_count = 0; |
| 1867 | entry->size = 0; |
| 1868 | } |
| 1869 | |
| 1870 | return TRUE; |
| 1871 | } |
| 1872 | |
| 1873 | /* Free the local elfNN_ia64_dyn_sym_info array. */ |
| 1874 | |
| 1875 | static bfd_boolean |
| 1876 | elfNN_ia64_local_dyn_info_free (void **slot, |
| 1877 | PTR unused ATTRIBUTE_UNUSED) |
| 1878 | { |
| 1879 | struct elfNN_ia64_local_hash_entry *entry |
| 1880 | = (struct elfNN_ia64_local_hash_entry *) *slot; |
| 1881 | |
| 1882 | if (entry->info) |
| 1883 | { |
| 1884 | free (entry->info); |
| 1885 | entry->info = NULL; |
| 1886 | entry->count = 0; |
| 1887 | entry->sorted_count = 0; |
| 1888 | entry->size = 0; |
| 1889 | } |
| 1890 | |
| 1891 | return TRUE; |
| 1892 | } |
| 1893 | |
| 1894 | /* Destroy IA-64 linker hash table. */ |
| 1895 | |
| 1896 | static void |
| 1897 | elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash) |
| 1898 | { |
| 1899 | struct elfNN_ia64_link_hash_table *ia64_info |
| 1900 | = (struct elfNN_ia64_link_hash_table *) hash; |
| 1901 | if (ia64_info->loc_hash_table) |
| 1902 | { |
| 1903 | htab_traverse (ia64_info->loc_hash_table, |
| 1904 | elfNN_ia64_local_dyn_info_free, NULL); |
| 1905 | htab_delete (ia64_info->loc_hash_table); |
| 1906 | } |
| 1907 | if (ia64_info->loc_hash_memory) |
| 1908 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); |
| 1909 | elf_link_hash_traverse (&ia64_info->root, |
| 1910 | elfNN_ia64_global_dyn_info_free, NULL); |
| 1911 | _bfd_generic_link_hash_table_free (hash); |
| 1912 | } |
| 1913 | |
| 1914 | /* Traverse both local and global hash tables. */ |
| 1915 | |
| 1916 | struct elfNN_ia64_dyn_sym_traverse_data |
| 1917 | { |
| 1918 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR); |
| 1919 | PTR data; |
| 1920 | }; |
| 1921 | |
| 1922 | static bfd_boolean |
| 1923 | elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, |
| 1924 | PTR xdata) |
| 1925 | { |
| 1926 | struct elfNN_ia64_link_hash_entry *entry |
| 1927 | = (struct elfNN_ia64_link_hash_entry *) xentry; |
| 1928 | struct elfNN_ia64_dyn_sym_traverse_data *data |
| 1929 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; |
| 1930 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 1931 | unsigned int count; |
| 1932 | |
| 1933 | if (entry->root.root.type == bfd_link_hash_warning) |
| 1934 | entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 1935 | |
| 1936 | for (count = entry->count, dyn_i = entry->info; |
| 1937 | count != 0; |
| 1938 | count--, dyn_i++) |
| 1939 | if (! (*data->func) (dyn_i, data->data)) |
| 1940 | return FALSE; |
| 1941 | return TRUE; |
| 1942 | } |
| 1943 | |
| 1944 | static bfd_boolean |
| 1945 | elfNN_ia64_local_dyn_sym_thunk (void **slot, PTR xdata) |
| 1946 | { |
| 1947 | struct elfNN_ia64_local_hash_entry *entry |
| 1948 | = (struct elfNN_ia64_local_hash_entry *) *slot; |
| 1949 | struct elfNN_ia64_dyn_sym_traverse_data *data |
| 1950 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; |
| 1951 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 1952 | unsigned int count; |
| 1953 | |
| 1954 | for (count = entry->count, dyn_i = entry->info; |
| 1955 | count != 0; |
| 1956 | count--, dyn_i++) |
| 1957 | if (! (*data->func) (dyn_i, data->data)) |
| 1958 | return FALSE; |
| 1959 | return TRUE; |
| 1960 | } |
| 1961 | |
| 1962 | static void |
| 1963 | elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, |
| 1964 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR), |
| 1965 | PTR data) |
| 1966 | { |
| 1967 | struct elfNN_ia64_dyn_sym_traverse_data xdata; |
| 1968 | |
| 1969 | xdata.func = func; |
| 1970 | xdata.data = data; |
| 1971 | |
| 1972 | elf_link_hash_traverse (&ia64_info->root, |
| 1973 | elfNN_ia64_global_dyn_sym_thunk, &xdata); |
| 1974 | htab_traverse (ia64_info->loc_hash_table, |
| 1975 | elfNN_ia64_local_dyn_sym_thunk, &xdata); |
| 1976 | } |
| 1977 | \f |
| 1978 | static bfd_boolean |
| 1979 | elfNN_ia64_create_dynamic_sections (bfd *abfd, |
| 1980 | struct bfd_link_info *info) |
| 1981 | { |
| 1982 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 1983 | asection *s; |
| 1984 | |
| 1985 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) |
| 1986 | return FALSE; |
| 1987 | |
| 1988 | ia64_info = elfNN_ia64_hash_table (info); |
| 1989 | |
| 1990 | ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt"); |
| 1991 | ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got"); |
| 1992 | |
| 1993 | { |
| 1994 | flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec); |
| 1995 | bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags); |
| 1996 | /* The .got section is always aligned at 8 bytes. */ |
| 1997 | bfd_set_section_alignment (abfd, ia64_info->got_sec, 3); |
| 1998 | } |
| 1999 | |
| 2000 | if (!get_pltoff (abfd, info, ia64_info)) |
| 2001 | return FALSE; |
| 2002 | |
| 2003 | s = bfd_make_section_with_flags (abfd, ".rela.IA_64.pltoff", |
| 2004 | (SEC_ALLOC | SEC_LOAD |
| 2005 | | SEC_HAS_CONTENTS |
| 2006 | | SEC_IN_MEMORY |
| 2007 | | SEC_LINKER_CREATED |
| 2008 | | SEC_READONLY)); |
| 2009 | if (s == NULL |
| 2010 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) |
| 2011 | return FALSE; |
| 2012 | ia64_info->rel_pltoff_sec = s; |
| 2013 | |
| 2014 | s = bfd_make_section_with_flags (abfd, ".rela.got", |
| 2015 | (SEC_ALLOC | SEC_LOAD |
| 2016 | | SEC_HAS_CONTENTS |
| 2017 | | SEC_IN_MEMORY |
| 2018 | | SEC_LINKER_CREATED |
| 2019 | | SEC_READONLY)); |
| 2020 | if (s == NULL |
| 2021 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) |
| 2022 | return FALSE; |
| 2023 | ia64_info->rel_got_sec = s; |
| 2024 | |
| 2025 | return TRUE; |
| 2026 | } |
| 2027 | |
| 2028 | /* Find and/or create a hash entry for local symbol. */ |
| 2029 | static struct elfNN_ia64_local_hash_entry * |
| 2030 | get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, |
| 2031 | bfd *abfd, const Elf_Internal_Rela *rel, |
| 2032 | bfd_boolean create) |
| 2033 | { |
| 2034 | struct elfNN_ia64_local_hash_entry e, *ret; |
| 2035 | asection *sec = abfd->sections; |
| 2036 | hashval_t h = (((sec->id & 0xff) << 24) | ((sec->id & 0xff00) << 8)) |
| 2037 | ^ ELFNN_R_SYM (rel->r_info) ^ (sec->id >> 16); |
| 2038 | void **slot; |
| 2039 | |
| 2040 | e.id = sec->id; |
| 2041 | e.r_sym = ELFNN_R_SYM (rel->r_info); |
| 2042 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, |
| 2043 | create ? INSERT : NO_INSERT); |
| 2044 | |
| 2045 | if (!slot) |
| 2046 | return NULL; |
| 2047 | |
| 2048 | if (*slot) |
| 2049 | return (struct elfNN_ia64_local_hash_entry *) *slot; |
| 2050 | |
| 2051 | ret = (struct elfNN_ia64_local_hash_entry *) |
| 2052 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, |
| 2053 | sizeof (struct elfNN_ia64_local_hash_entry)); |
| 2054 | if (ret) |
| 2055 | { |
| 2056 | memset (ret, 0, sizeof (*ret)); |
| 2057 | ret->id = sec->id; |
| 2058 | ret->r_sym = ELFNN_R_SYM (rel->r_info); |
| 2059 | *slot = ret; |
| 2060 | } |
| 2061 | return ret; |
| 2062 | } |
| 2063 | |
| 2064 | /* Used to sort elfNN_ia64_dyn_sym_info array. */ |
| 2065 | |
| 2066 | static int |
| 2067 | addend_compare (const void *xp, const void *yp) |
| 2068 | { |
| 2069 | const struct elfNN_ia64_dyn_sym_info *x |
| 2070 | = (const struct elfNN_ia64_dyn_sym_info *) xp; |
| 2071 | const struct elfNN_ia64_dyn_sym_info *y |
| 2072 | = (const struct elfNN_ia64_dyn_sym_info *) yp; |
| 2073 | |
| 2074 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; |
| 2075 | } |
| 2076 | |
| 2077 | /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ |
| 2078 | |
| 2079 | static unsigned int |
| 2080 | sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, |
| 2081 | unsigned int count) |
| 2082 | { |
| 2083 | bfd_vma curr, prev, got_offset; |
| 2084 | unsigned int i, kept, dup, diff, dest, src, len; |
| 2085 | |
| 2086 | qsort (info, count, sizeof (*info), addend_compare); |
| 2087 | |
| 2088 | /* Find the first duplicate. */ |
| 2089 | prev = info [0].addend; |
| 2090 | got_offset = info [0].got_offset; |
| 2091 | for (i = 1; i < count; i++) |
| 2092 | { |
| 2093 | curr = info [i].addend; |
| 2094 | if (curr == prev) |
| 2095 | { |
| 2096 | /* For duplicates, make sure that GOT_OFFSET is valid. */ |
| 2097 | if (got_offset == (bfd_vma) -1) |
| 2098 | got_offset = info [i].got_offset; |
| 2099 | break; |
| 2100 | } |
| 2101 | got_offset = info [i].got_offset; |
| 2102 | prev = curr; |
| 2103 | } |
| 2104 | |
| 2105 | /* We may move a block of elements to here. */ |
| 2106 | dest = i++; |
| 2107 | |
| 2108 | /* Remove duplicates. */ |
| 2109 | if (i < count) |
| 2110 | { |
| 2111 | while (i < count) |
| 2112 | { |
| 2113 | /* For duplicates, make sure that the kept one has a valid |
| 2114 | got_offset. */ |
| 2115 | kept = dest - 1; |
| 2116 | if (got_offset != (bfd_vma) -1) |
| 2117 | info [kept].got_offset = got_offset; |
| 2118 | |
| 2119 | curr = info [i].addend; |
| 2120 | got_offset = info [i].got_offset; |
| 2121 | |
| 2122 | /* Move a block of elements whose first one is different from |
| 2123 | the previous. */ |
| 2124 | if (curr == prev) |
| 2125 | { |
| 2126 | for (src = i + 1; src < count; src++) |
| 2127 | { |
| 2128 | if (info [src].addend != curr) |
| 2129 | break; |
| 2130 | /* For duplicates, make sure that GOT_OFFSET is |
| 2131 | valid. */ |
| 2132 | if (got_offset == (bfd_vma) -1) |
| 2133 | got_offset = info [src].got_offset; |
| 2134 | } |
| 2135 | |
| 2136 | /* Make sure that the kept one has a valid got_offset. */ |
| 2137 | if (got_offset != (bfd_vma) -1) |
| 2138 | info [kept].got_offset = got_offset; |
| 2139 | } |
| 2140 | else |
| 2141 | src = i; |
| 2142 | |
| 2143 | if (src >= count) |
| 2144 | break; |
| 2145 | |
| 2146 | /* Find the next duplicate. SRC will be kept. */ |
| 2147 | prev = info [src].addend; |
| 2148 | got_offset = info [src].got_offset; |
| 2149 | for (dup = src + 1; dup < count; dup++) |
| 2150 | { |
| 2151 | curr = info [dup].addend; |
| 2152 | if (curr == prev) |
| 2153 | { |
| 2154 | /* Make sure that got_offset is valid. */ |
| 2155 | if (got_offset == (bfd_vma) -1) |
| 2156 | got_offset = info [dup].got_offset; |
| 2157 | |
| 2158 | /* For duplicates, make sure that the kept one has |
| 2159 | a valid got_offset. */ |
| 2160 | if (got_offset != (bfd_vma) -1) |
| 2161 | info [dup - 1].got_offset = got_offset; |
| 2162 | break; |
| 2163 | } |
| 2164 | got_offset = info [dup].got_offset; |
| 2165 | prev = curr; |
| 2166 | } |
| 2167 | |
| 2168 | /* How much to move. */ |
| 2169 | len = dup - src; |
| 2170 | i = dup + 1; |
| 2171 | |
| 2172 | if (len == 1 && dup < count) |
| 2173 | { |
| 2174 | /* If we only move 1 element, we combine it with the next |
| 2175 | one. There must be at least a duplicate. Find the |
| 2176 | next different one. */ |
| 2177 | for (diff = dup + 1, src++; diff < count; diff++, src++) |
| 2178 | { |
| 2179 | if (info [diff].addend != curr) |
| 2180 | break; |
| 2181 | /* Make sure that got_offset is valid. */ |
| 2182 | if (got_offset == (bfd_vma) -1) |
| 2183 | got_offset = info [diff].got_offset; |
| 2184 | } |
| 2185 | |
| 2186 | /* Makre sure that the last duplicated one has an valid |
| 2187 | offset. */ |
| 2188 | BFD_ASSERT (curr == prev); |
| 2189 | if (got_offset != (bfd_vma) -1) |
| 2190 | info [diff - 1].got_offset = got_offset; |
| 2191 | |
| 2192 | if (diff < count) |
| 2193 | { |
| 2194 | /* Find the next duplicate. Track the current valid |
| 2195 | offset. */ |
| 2196 | prev = info [diff].addend; |
| 2197 | got_offset = info [diff].got_offset; |
| 2198 | for (dup = diff + 1; dup < count; dup++) |
| 2199 | { |
| 2200 | curr = info [dup].addend; |
| 2201 | if (curr == prev) |
| 2202 | { |
| 2203 | /* For duplicates, make sure that GOT_OFFSET |
| 2204 | is valid. */ |
| 2205 | if (got_offset == (bfd_vma) -1) |
| 2206 | got_offset = info [dup].got_offset; |
| 2207 | break; |
| 2208 | } |
| 2209 | got_offset = info [dup].got_offset; |
| 2210 | prev = curr; |
| 2211 | diff++; |
| 2212 | } |
| 2213 | |
| 2214 | len = diff - src + 1; |
| 2215 | i = diff + 1; |
| 2216 | } |
| 2217 | } |
| 2218 | |
| 2219 | memmove (&info [dest], &info [src], len * sizeof (*info)); |
| 2220 | |
| 2221 | dest += len; |
| 2222 | } |
| 2223 | |
| 2224 | count = dest; |
| 2225 | } |
| 2226 | else |
| 2227 | { |
| 2228 | /* When we get here, either there is no duplicate at all or |
| 2229 | the only duplicate is the last element. */ |
| 2230 | if (dest < count) |
| 2231 | { |
| 2232 | /* If the last element is a duplicate, make sure that the |
| 2233 | kept one has a valid got_offset. We also update count. */ |
| 2234 | if (got_offset != (bfd_vma) -1) |
| 2235 | info [dest - 1].got_offset = got_offset; |
| 2236 | count = dest; |
| 2237 | } |
| 2238 | } |
| 2239 | |
| 2240 | return count; |
| 2241 | } |
| 2242 | |
| 2243 | /* Find and/or create a descriptor for dynamic symbol info. This will |
| 2244 | vary based on global or local symbol, and the addend to the reloc. |
| 2245 | |
| 2246 | We don't sort when inserting. Also, we sort and eliminate |
| 2247 | duplicates if there is an unsorted section. Typically, this will |
| 2248 | only happen once, because we do all insertions before lookups. We |
| 2249 | then use bsearch to do a lookup. This also allows lookups to be |
| 2250 | fast. So we have fast insertion (O(log N) due to duplicate check), |
| 2251 | fast lookup (O(log N)) and one sort (O(N log N) expected time). |
| 2252 | Previously, all lookups were O(N) because of the use of the linked |
| 2253 | list and also all insertions were O(N) because of the check for |
| 2254 | duplicates. There are some complications here because the array |
| 2255 | size grows occasionally, which may add an O(N) factor, but this |
| 2256 | should be rare. Also, we free the excess array allocation, which |
| 2257 | requires a copy which is O(N), but this only happens once. */ |
| 2258 | |
| 2259 | static struct elfNN_ia64_dyn_sym_info * |
| 2260 | get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, |
| 2261 | struct elf_link_hash_entry *h, bfd *abfd, |
| 2262 | const Elf_Internal_Rela *rel, bfd_boolean create) |
| 2263 | { |
| 2264 | struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; |
| 2265 | unsigned int *count_p, *sorted_count_p, *size_p; |
| 2266 | unsigned int count, sorted_count, size; |
| 2267 | bfd_vma addend = rel ? rel->r_addend : 0; |
| 2268 | bfd_size_type amt; |
| 2269 | |
| 2270 | if (h) |
| 2271 | { |
| 2272 | struct elfNN_ia64_link_hash_entry *global_h; |
| 2273 | |
| 2274 | global_h = (struct elfNN_ia64_link_hash_entry *) h; |
| 2275 | info_p = &global_h->info; |
| 2276 | count_p = &global_h->count; |
| 2277 | sorted_count_p = &global_h->sorted_count; |
| 2278 | size_p = &global_h->size; |
| 2279 | } |
| 2280 | else |
| 2281 | { |
| 2282 | struct elfNN_ia64_local_hash_entry *loc_h; |
| 2283 | |
| 2284 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); |
| 2285 | if (!loc_h) |
| 2286 | { |
| 2287 | BFD_ASSERT (!create); |
| 2288 | return NULL; |
| 2289 | } |
| 2290 | |
| 2291 | info_p = &loc_h->info; |
| 2292 | count_p = &loc_h->count; |
| 2293 | sorted_count_p = &loc_h->sorted_count; |
| 2294 | size_p = &loc_h->size; |
| 2295 | } |
| 2296 | |
| 2297 | count = *count_p; |
| 2298 | sorted_count = *sorted_count_p; |
| 2299 | size = *size_p; |
| 2300 | info = *info_p; |
| 2301 | if (create) |
| 2302 | { |
| 2303 | /* When we create the array, we don't check for duplicates, |
| 2304 | except in the previously sorted section if one exists, and |
| 2305 | against the last inserted entry. This allows insertions to |
| 2306 | be fast. */ |
| 2307 | if (info) |
| 2308 | { |
| 2309 | if (sorted_count) |
| 2310 | { |
| 2311 | /* Try bsearch first on the sorted section. */ |
| 2312 | key.addend = addend; |
| 2313 | dyn_i = bsearch (&key, info, sorted_count, |
| 2314 | sizeof (*info), addend_compare); |
| 2315 | |
| 2316 | if (dyn_i) |
| 2317 | { |
| 2318 | return dyn_i; |
| 2319 | } |
| 2320 | } |
| 2321 | |
| 2322 | /* Do a quick check for the last inserted entry. */ |
| 2323 | dyn_i = info + count - 1; |
| 2324 | if (dyn_i->addend == addend) |
| 2325 | { |
| 2326 | return dyn_i; |
| 2327 | } |
| 2328 | } |
| 2329 | |
| 2330 | if (size == 0) |
| 2331 | { |
| 2332 | /* It is the very first element. We create the array of size |
| 2333 | 1. */ |
| 2334 | size = 1; |
| 2335 | amt = size * sizeof (*info); |
| 2336 | info = bfd_malloc (amt); |
| 2337 | } |
| 2338 | else if (size <= count) |
| 2339 | { |
| 2340 | /* We double the array size every time when we reach the |
| 2341 | size limit. */ |
| 2342 | size += size; |
| 2343 | amt = size * sizeof (*info); |
| 2344 | info = bfd_realloc (info, amt); |
| 2345 | } |
| 2346 | else |
| 2347 | goto has_space; |
| 2348 | |
| 2349 | if (info == NULL) |
| 2350 | return NULL; |
| 2351 | *size_p = size; |
| 2352 | *info_p = info; |
| 2353 | |
| 2354 | has_space: |
| 2355 | /* Append the new one to the array. */ |
| 2356 | dyn_i = info + count; |
| 2357 | memset (dyn_i, 0, sizeof (*dyn_i)); |
| 2358 | dyn_i->got_offset = (bfd_vma) -1; |
| 2359 | dyn_i->addend = addend; |
| 2360 | |
| 2361 | /* We increment count only since the new ones are unsorted and |
| 2362 | may have duplicate. */ |
| 2363 | (*count_p)++; |
| 2364 | } |
| 2365 | else |
| 2366 | { |
| 2367 | /* It is a lookup without insertion. Sort array if part of the |
| 2368 | array isn't sorted. */ |
| 2369 | if (count != sorted_count) |
| 2370 | { |
| 2371 | count = sort_dyn_sym_info (info, count); |
| 2372 | *count_p = count; |
| 2373 | *sorted_count_p = count; |
| 2374 | } |
| 2375 | |
| 2376 | /* Free unused memory. */ |
| 2377 | if (size != count) |
| 2378 | { |
| 2379 | amt = count * sizeof (*info); |
| 2380 | info = bfd_malloc (amt); |
| 2381 | if (info != NULL) |
| 2382 | { |
| 2383 | memcpy (info, *info_p, amt); |
| 2384 | free (*info_p); |
| 2385 | *size_p = count; |
| 2386 | *info_p = info; |
| 2387 | } |
| 2388 | } |
| 2389 | |
| 2390 | key.addend = addend; |
| 2391 | dyn_i = bsearch (&key, info, count, |
| 2392 | sizeof (*info), addend_compare); |
| 2393 | } |
| 2394 | |
| 2395 | return dyn_i; |
| 2396 | } |
| 2397 | |
| 2398 | static asection * |
| 2399 | get_got (bfd *abfd, struct bfd_link_info *info, |
| 2400 | struct elfNN_ia64_link_hash_table *ia64_info) |
| 2401 | { |
| 2402 | asection *got; |
| 2403 | bfd *dynobj; |
| 2404 | |
| 2405 | got = ia64_info->got_sec; |
| 2406 | if (!got) |
| 2407 | { |
| 2408 | flagword flags; |
| 2409 | |
| 2410 | dynobj = ia64_info->root.dynobj; |
| 2411 | if (!dynobj) |
| 2412 | ia64_info->root.dynobj = dynobj = abfd; |
| 2413 | if (!_bfd_elf_create_got_section (dynobj, info)) |
| 2414 | return 0; |
| 2415 | |
| 2416 | got = bfd_get_section_by_name (dynobj, ".got"); |
| 2417 | BFD_ASSERT (got); |
| 2418 | ia64_info->got_sec = got; |
| 2419 | |
| 2420 | /* The .got section is always aligned at 8 bytes. */ |
| 2421 | if (!bfd_set_section_alignment (abfd, got, 3)) |
| 2422 | return 0; |
| 2423 | |
| 2424 | flags = bfd_get_section_flags (abfd, got); |
| 2425 | bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags); |
| 2426 | } |
| 2427 | |
| 2428 | return got; |
| 2429 | } |
| 2430 | |
| 2431 | /* Create function descriptor section (.opd). This section is called .opd |
| 2432 | because it contains "official procedure descriptors". The "official" |
| 2433 | refers to the fact that these descriptors are used when taking the address |
| 2434 | of a procedure, thus ensuring a unique address for each procedure. */ |
| 2435 | |
| 2436 | static asection * |
| 2437 | get_fptr (bfd *abfd, struct bfd_link_info *info, |
| 2438 | struct elfNN_ia64_link_hash_table *ia64_info) |
| 2439 | { |
| 2440 | asection *fptr; |
| 2441 | bfd *dynobj; |
| 2442 | |
| 2443 | fptr = ia64_info->fptr_sec; |
| 2444 | if (!fptr) |
| 2445 | { |
| 2446 | dynobj = ia64_info->root.dynobj; |
| 2447 | if (!dynobj) |
| 2448 | ia64_info->root.dynobj = dynobj = abfd; |
| 2449 | |
| 2450 | fptr = bfd_make_section_with_flags (dynobj, ".opd", |
| 2451 | (SEC_ALLOC |
| 2452 | | SEC_LOAD |
| 2453 | | SEC_HAS_CONTENTS |
| 2454 | | SEC_IN_MEMORY |
| 2455 | | (info->pie ? 0 : SEC_READONLY) |
| 2456 | | SEC_LINKER_CREATED)); |
| 2457 | if (!fptr |
| 2458 | || !bfd_set_section_alignment (abfd, fptr, 4)) |
| 2459 | { |
| 2460 | BFD_ASSERT (0); |
| 2461 | return NULL; |
| 2462 | } |
| 2463 | |
| 2464 | ia64_info->fptr_sec = fptr; |
| 2465 | |
| 2466 | if (info->pie) |
| 2467 | { |
| 2468 | asection *fptr_rel; |
| 2469 | fptr_rel = bfd_make_section_with_flags (dynobj, ".rela.opd", |
| 2470 | (SEC_ALLOC | SEC_LOAD |
| 2471 | | SEC_HAS_CONTENTS |
| 2472 | | SEC_IN_MEMORY |
| 2473 | | SEC_LINKER_CREATED |
| 2474 | | SEC_READONLY)); |
| 2475 | if (fptr_rel == NULL |
| 2476 | || !bfd_set_section_alignment (abfd, fptr_rel, |
| 2477 | LOG_SECTION_ALIGN)) |
| 2478 | { |
| 2479 | BFD_ASSERT (0); |
| 2480 | return NULL; |
| 2481 | } |
| 2482 | |
| 2483 | ia64_info->rel_fptr_sec = fptr_rel; |
| 2484 | } |
| 2485 | } |
| 2486 | |
| 2487 | return fptr; |
| 2488 | } |
| 2489 | |
| 2490 | static asection * |
| 2491 | get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2492 | struct elfNN_ia64_link_hash_table *ia64_info) |
| 2493 | { |
| 2494 | asection *pltoff; |
| 2495 | bfd *dynobj; |
| 2496 | |
| 2497 | pltoff = ia64_info->pltoff_sec; |
| 2498 | if (!pltoff) |
| 2499 | { |
| 2500 | dynobj = ia64_info->root.dynobj; |
| 2501 | if (!dynobj) |
| 2502 | ia64_info->root.dynobj = dynobj = abfd; |
| 2503 | |
| 2504 | pltoff = bfd_make_section_with_flags (dynobj, |
| 2505 | ELF_STRING_ia64_pltoff, |
| 2506 | (SEC_ALLOC |
| 2507 | | SEC_LOAD |
| 2508 | | SEC_HAS_CONTENTS |
| 2509 | | SEC_IN_MEMORY |
| 2510 | | SEC_SMALL_DATA |
| 2511 | | SEC_LINKER_CREATED)); |
| 2512 | if (!pltoff |
| 2513 | || !bfd_set_section_alignment (abfd, pltoff, 4)) |
| 2514 | { |
| 2515 | BFD_ASSERT (0); |
| 2516 | return NULL; |
| 2517 | } |
| 2518 | |
| 2519 | ia64_info->pltoff_sec = pltoff; |
| 2520 | } |
| 2521 | |
| 2522 | return pltoff; |
| 2523 | } |
| 2524 | |
| 2525 | static asection * |
| 2526 | get_reloc_section (bfd *abfd, |
| 2527 | struct elfNN_ia64_link_hash_table *ia64_info, |
| 2528 | asection *sec, bfd_boolean create) |
| 2529 | { |
| 2530 | const char *srel_name; |
| 2531 | asection *srel; |
| 2532 | bfd *dynobj; |
| 2533 | |
| 2534 | srel_name = (bfd_elf_string_from_elf_section |
| 2535 | (abfd, elf_elfheader(abfd)->e_shstrndx, |
| 2536 | elf_section_data(sec)->rel_hdr.sh_name)); |
| 2537 | if (srel_name == NULL) |
| 2538 | return NULL; |
| 2539 | |
| 2540 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
| 2541 | && strcmp (bfd_get_section_name (abfd, sec), |
| 2542 | srel_name+5) == 0) |
| 2543 | || (CONST_STRNEQ (srel_name, ".rel") |
| 2544 | && strcmp (bfd_get_section_name (abfd, sec), |
| 2545 | srel_name+4) == 0)); |
| 2546 | |
| 2547 | dynobj = ia64_info->root.dynobj; |
| 2548 | if (!dynobj) |
| 2549 | ia64_info->root.dynobj = dynobj = abfd; |
| 2550 | |
| 2551 | srel = bfd_get_section_by_name (dynobj, srel_name); |
| 2552 | if (srel == NULL && create) |
| 2553 | { |
| 2554 | srel = bfd_make_section_with_flags (dynobj, srel_name, |
| 2555 | (SEC_ALLOC | SEC_LOAD |
| 2556 | | SEC_HAS_CONTENTS |
| 2557 | | SEC_IN_MEMORY |
| 2558 | | SEC_LINKER_CREATED |
| 2559 | | SEC_READONLY)); |
| 2560 | if (srel == NULL |
| 2561 | || !bfd_set_section_alignment (dynobj, srel, |
| 2562 | LOG_SECTION_ALIGN)) |
| 2563 | return NULL; |
| 2564 | } |
| 2565 | |
| 2566 | return srel; |
| 2567 | } |
| 2568 | |
| 2569 | static bfd_boolean |
| 2570 | count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 2571 | asection *srel, int type, bfd_boolean reltext) |
| 2572 | { |
| 2573 | struct elfNN_ia64_dyn_reloc_entry *rent; |
| 2574 | |
| 2575 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 2576 | if (rent->srel == srel && rent->type == type) |
| 2577 | break; |
| 2578 | |
| 2579 | if (!rent) |
| 2580 | { |
| 2581 | rent = ((struct elfNN_ia64_dyn_reloc_entry *) |
| 2582 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); |
| 2583 | if (!rent) |
| 2584 | return FALSE; |
| 2585 | |
| 2586 | rent->next = dyn_i->reloc_entries; |
| 2587 | rent->srel = srel; |
| 2588 | rent->type = type; |
| 2589 | rent->count = 0; |
| 2590 | dyn_i->reloc_entries = rent; |
| 2591 | } |
| 2592 | rent->reltext = reltext; |
| 2593 | rent->count++; |
| 2594 | |
| 2595 | return TRUE; |
| 2596 | } |
| 2597 | |
| 2598 | static bfd_boolean |
| 2599 | elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 2600 | asection *sec, |
| 2601 | const Elf_Internal_Rela *relocs) |
| 2602 | { |
| 2603 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 2604 | const Elf_Internal_Rela *relend; |
| 2605 | Elf_Internal_Shdr *symtab_hdr; |
| 2606 | const Elf_Internal_Rela *rel; |
| 2607 | asection *got, *fptr, *srel, *pltoff; |
| 2608 | enum { |
| 2609 | NEED_GOT = 1, |
| 2610 | NEED_GOTX = 2, |
| 2611 | NEED_FPTR = 4, |
| 2612 | NEED_PLTOFF = 8, |
| 2613 | NEED_MIN_PLT = 16, |
| 2614 | NEED_FULL_PLT = 32, |
| 2615 | NEED_DYNREL = 64, |
| 2616 | NEED_LTOFF_FPTR = 128, |
| 2617 | NEED_TPREL = 256, |
| 2618 | NEED_DTPMOD = 512, |
| 2619 | NEED_DTPREL = 1024 |
| 2620 | }; |
| 2621 | int need_entry; |
| 2622 | struct elf_link_hash_entry *h; |
| 2623 | unsigned long r_symndx; |
| 2624 | bfd_boolean maybe_dynamic; |
| 2625 | |
| 2626 | if (info->relocatable) |
| 2627 | return TRUE; |
| 2628 | |
| 2629 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 2630 | ia64_info = elfNN_ia64_hash_table (info); |
| 2631 | |
| 2632 | got = fptr = srel = pltoff = NULL; |
| 2633 | |
| 2634 | relend = relocs + sec->reloc_count; |
| 2635 | |
| 2636 | /* We scan relocations first to create dynamic relocation arrays. We |
| 2637 | modified get_dyn_sym_info to allow fast insertion and support fast |
| 2638 | lookup in the next loop. */ |
| 2639 | for (rel = relocs; rel < relend; ++rel) |
| 2640 | { |
| 2641 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| 2642 | if (r_symndx >= symtab_hdr->sh_info) |
| 2643 | { |
| 2644 | long indx = r_symndx - symtab_hdr->sh_info; |
| 2645 | h = elf_sym_hashes (abfd)[indx]; |
| 2646 | while (h->root.type == bfd_link_hash_indirect |
| 2647 | || h->root.type == bfd_link_hash_warning) |
| 2648 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2649 | } |
| 2650 | else |
| 2651 | h = NULL; |
| 2652 | |
| 2653 | /* We can only get preliminary data on whether a symbol is |
| 2654 | locally or externally defined, as not all of the input files |
| 2655 | have yet been processed. Do something with what we know, as |
| 2656 | this may help reduce memory usage and processing time later. */ |
| 2657 | maybe_dynamic = (h && ((!info->executable |
| 2658 | && (!SYMBOLIC_BIND (info, h) |
| 2659 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 2660 | || !h->def_regular |
| 2661 | || h->root.type == bfd_link_hash_defweak)); |
| 2662 | |
| 2663 | need_entry = 0; |
| 2664 | switch (ELFNN_R_TYPE (rel->r_info)) |
| 2665 | { |
| 2666 | case R_IA64_TPREL64MSB: |
| 2667 | case R_IA64_TPREL64LSB: |
| 2668 | if (info->shared || maybe_dynamic) |
| 2669 | need_entry = NEED_DYNREL; |
| 2670 | break; |
| 2671 | |
| 2672 | case R_IA64_LTOFF_TPREL22: |
| 2673 | need_entry = NEED_TPREL; |
| 2674 | if (info->shared) |
| 2675 | info->flags |= DF_STATIC_TLS; |
| 2676 | break; |
| 2677 | |
| 2678 | case R_IA64_DTPREL32MSB: |
| 2679 | case R_IA64_DTPREL32LSB: |
| 2680 | case R_IA64_DTPREL64MSB: |
| 2681 | case R_IA64_DTPREL64LSB: |
| 2682 | if (info->shared || maybe_dynamic) |
| 2683 | need_entry = NEED_DYNREL; |
| 2684 | break; |
| 2685 | |
| 2686 | case R_IA64_LTOFF_DTPREL22: |
| 2687 | need_entry = NEED_DTPREL; |
| 2688 | break; |
| 2689 | |
| 2690 | case R_IA64_DTPMOD64MSB: |
| 2691 | case R_IA64_DTPMOD64LSB: |
| 2692 | if (info->shared || maybe_dynamic) |
| 2693 | need_entry = NEED_DYNREL; |
| 2694 | break; |
| 2695 | |
| 2696 | case R_IA64_LTOFF_DTPMOD22: |
| 2697 | need_entry = NEED_DTPMOD; |
| 2698 | break; |
| 2699 | |
| 2700 | case R_IA64_LTOFF_FPTR22: |
| 2701 | case R_IA64_LTOFF_FPTR64I: |
| 2702 | case R_IA64_LTOFF_FPTR32MSB: |
| 2703 | case R_IA64_LTOFF_FPTR32LSB: |
| 2704 | case R_IA64_LTOFF_FPTR64MSB: |
| 2705 | case R_IA64_LTOFF_FPTR64LSB: |
| 2706 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 2707 | break; |
| 2708 | |
| 2709 | case R_IA64_FPTR64I: |
| 2710 | case R_IA64_FPTR32MSB: |
| 2711 | case R_IA64_FPTR32LSB: |
| 2712 | case R_IA64_FPTR64MSB: |
| 2713 | case R_IA64_FPTR64LSB: |
| 2714 | if (info->shared || h) |
| 2715 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2716 | else |
| 2717 | need_entry = NEED_FPTR; |
| 2718 | break; |
| 2719 | |
| 2720 | case R_IA64_LTOFF22: |
| 2721 | case R_IA64_LTOFF64I: |
| 2722 | need_entry = NEED_GOT; |
| 2723 | break; |
| 2724 | |
| 2725 | case R_IA64_LTOFF22X: |
| 2726 | need_entry = NEED_GOTX; |
| 2727 | break; |
| 2728 | |
| 2729 | case R_IA64_PLTOFF22: |
| 2730 | case R_IA64_PLTOFF64I: |
| 2731 | case R_IA64_PLTOFF64MSB: |
| 2732 | case R_IA64_PLTOFF64LSB: |
| 2733 | need_entry = NEED_PLTOFF; |
| 2734 | if (h) |
| 2735 | { |
| 2736 | if (maybe_dynamic) |
| 2737 | need_entry |= NEED_MIN_PLT; |
| 2738 | } |
| 2739 | else |
| 2740 | { |
| 2741 | (*info->callbacks->warning) |
| 2742 | (info, _("@pltoff reloc against local symbol"), 0, |
| 2743 | abfd, 0, (bfd_vma) 0); |
| 2744 | } |
| 2745 | break; |
| 2746 | |
| 2747 | case R_IA64_PCREL21B: |
| 2748 | case R_IA64_PCREL60B: |
| 2749 | /* Depending on where this symbol is defined, we may or may not |
| 2750 | need a full plt entry. Only skip if we know we'll not need |
| 2751 | the entry -- static or symbolic, and the symbol definition |
| 2752 | has already been seen. */ |
| 2753 | if (maybe_dynamic && rel->r_addend == 0) |
| 2754 | need_entry = NEED_FULL_PLT; |
| 2755 | break; |
| 2756 | |
| 2757 | case R_IA64_IMM14: |
| 2758 | case R_IA64_IMM22: |
| 2759 | case R_IA64_IMM64: |
| 2760 | case R_IA64_DIR32MSB: |
| 2761 | case R_IA64_DIR32LSB: |
| 2762 | case R_IA64_DIR64MSB: |
| 2763 | case R_IA64_DIR64LSB: |
| 2764 | /* Shared objects will always need at least a REL relocation. */ |
| 2765 | if (info->shared || maybe_dynamic) |
| 2766 | need_entry = NEED_DYNREL; |
| 2767 | break; |
| 2768 | |
| 2769 | case R_IA64_IPLTMSB: |
| 2770 | case R_IA64_IPLTLSB: |
| 2771 | /* Shared objects will always need at least a REL relocation. */ |
| 2772 | if (info->shared || maybe_dynamic) |
| 2773 | need_entry = NEED_DYNREL; |
| 2774 | break; |
| 2775 | |
| 2776 | case R_IA64_PCREL22: |
| 2777 | case R_IA64_PCREL64I: |
| 2778 | case R_IA64_PCREL32MSB: |
| 2779 | case R_IA64_PCREL32LSB: |
| 2780 | case R_IA64_PCREL64MSB: |
| 2781 | case R_IA64_PCREL64LSB: |
| 2782 | if (maybe_dynamic) |
| 2783 | need_entry = NEED_DYNREL; |
| 2784 | break; |
| 2785 | } |
| 2786 | |
| 2787 | if (!need_entry) |
| 2788 | continue; |
| 2789 | |
| 2790 | if ((need_entry & NEED_FPTR) != 0 |
| 2791 | && rel->r_addend) |
| 2792 | { |
| 2793 | (*info->callbacks->warning) |
| 2794 | (info, _("non-zero addend in @fptr reloc"), 0, |
| 2795 | abfd, 0, (bfd_vma) 0); |
| 2796 | } |
| 2797 | |
| 2798 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) |
| 2799 | return FALSE; |
| 2800 | } |
| 2801 | |
| 2802 | /* Now, we only do lookup without insertion, which is very fast |
| 2803 | with the modified get_dyn_sym_info. */ |
| 2804 | for (rel = relocs; rel < relend; ++rel) |
| 2805 | { |
| 2806 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 2807 | int dynrel_type = R_IA64_NONE; |
| 2808 | |
| 2809 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| 2810 | if (r_symndx >= symtab_hdr->sh_info) |
| 2811 | { |
| 2812 | /* We're dealing with a global symbol -- find its hash entry |
| 2813 | and mark it as being referenced. */ |
| 2814 | long indx = r_symndx - symtab_hdr->sh_info; |
| 2815 | h = elf_sym_hashes (abfd)[indx]; |
| 2816 | while (h->root.type == bfd_link_hash_indirect |
| 2817 | || h->root.type == bfd_link_hash_warning) |
| 2818 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2819 | |
| 2820 | h->ref_regular = 1; |
| 2821 | } |
| 2822 | else |
| 2823 | h = NULL; |
| 2824 | |
| 2825 | /* We can only get preliminary data on whether a symbol is |
| 2826 | locally or externally defined, as not all of the input files |
| 2827 | have yet been processed. Do something with what we know, as |
| 2828 | this may help reduce memory usage and processing time later. */ |
| 2829 | maybe_dynamic = (h && ((!info->executable |
| 2830 | && (!SYMBOLIC_BIND (info, h) |
| 2831 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 2832 | || !h->def_regular |
| 2833 | || h->root.type == bfd_link_hash_defweak)); |
| 2834 | |
| 2835 | need_entry = 0; |
| 2836 | switch (ELFNN_R_TYPE (rel->r_info)) |
| 2837 | { |
| 2838 | case R_IA64_TPREL64MSB: |
| 2839 | case R_IA64_TPREL64LSB: |
| 2840 | if (info->shared || maybe_dynamic) |
| 2841 | need_entry = NEED_DYNREL; |
| 2842 | dynrel_type = R_IA64_TPREL64LSB; |
| 2843 | if (info->shared) |
| 2844 | info->flags |= DF_STATIC_TLS; |
| 2845 | break; |
| 2846 | |
| 2847 | case R_IA64_LTOFF_TPREL22: |
| 2848 | need_entry = NEED_TPREL; |
| 2849 | if (info->shared) |
| 2850 | info->flags |= DF_STATIC_TLS; |
| 2851 | break; |
| 2852 | |
| 2853 | case R_IA64_DTPREL32MSB: |
| 2854 | case R_IA64_DTPREL32LSB: |
| 2855 | case R_IA64_DTPREL64MSB: |
| 2856 | case R_IA64_DTPREL64LSB: |
| 2857 | if (info->shared || maybe_dynamic) |
| 2858 | need_entry = NEED_DYNREL; |
| 2859 | dynrel_type = R_IA64_DTPRELNNLSB; |
| 2860 | break; |
| 2861 | |
| 2862 | case R_IA64_LTOFF_DTPREL22: |
| 2863 | need_entry = NEED_DTPREL; |
| 2864 | break; |
| 2865 | |
| 2866 | case R_IA64_DTPMOD64MSB: |
| 2867 | case R_IA64_DTPMOD64LSB: |
| 2868 | if (info->shared || maybe_dynamic) |
| 2869 | need_entry = NEED_DYNREL; |
| 2870 | dynrel_type = R_IA64_DTPMOD64LSB; |
| 2871 | break; |
| 2872 | |
| 2873 | case R_IA64_LTOFF_DTPMOD22: |
| 2874 | need_entry = NEED_DTPMOD; |
| 2875 | break; |
| 2876 | |
| 2877 | case R_IA64_LTOFF_FPTR22: |
| 2878 | case R_IA64_LTOFF_FPTR64I: |
| 2879 | case R_IA64_LTOFF_FPTR32MSB: |
| 2880 | case R_IA64_LTOFF_FPTR32LSB: |
| 2881 | case R_IA64_LTOFF_FPTR64MSB: |
| 2882 | case R_IA64_LTOFF_FPTR64LSB: |
| 2883 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 2884 | break; |
| 2885 | |
| 2886 | case R_IA64_FPTR64I: |
| 2887 | case R_IA64_FPTR32MSB: |
| 2888 | case R_IA64_FPTR32LSB: |
| 2889 | case R_IA64_FPTR64MSB: |
| 2890 | case R_IA64_FPTR64LSB: |
| 2891 | if (info->shared || h) |
| 2892 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2893 | else |
| 2894 | need_entry = NEED_FPTR; |
| 2895 | dynrel_type = R_IA64_FPTRNNLSB; |
| 2896 | break; |
| 2897 | |
| 2898 | case R_IA64_LTOFF22: |
| 2899 | case R_IA64_LTOFF64I: |
| 2900 | need_entry = NEED_GOT; |
| 2901 | break; |
| 2902 | |
| 2903 | case R_IA64_LTOFF22X: |
| 2904 | need_entry = NEED_GOTX; |
| 2905 | break; |
| 2906 | |
| 2907 | case R_IA64_PLTOFF22: |
| 2908 | case R_IA64_PLTOFF64I: |
| 2909 | case R_IA64_PLTOFF64MSB: |
| 2910 | case R_IA64_PLTOFF64LSB: |
| 2911 | need_entry = NEED_PLTOFF; |
| 2912 | if (h) |
| 2913 | { |
| 2914 | if (maybe_dynamic) |
| 2915 | need_entry |= NEED_MIN_PLT; |
| 2916 | } |
| 2917 | break; |
| 2918 | |
| 2919 | case R_IA64_PCREL21B: |
| 2920 | case R_IA64_PCREL60B: |
| 2921 | /* Depending on where this symbol is defined, we may or may not |
| 2922 | need a full plt entry. Only skip if we know we'll not need |
| 2923 | the entry -- static or symbolic, and the symbol definition |
| 2924 | has already been seen. */ |
| 2925 | if (maybe_dynamic && rel->r_addend == 0) |
| 2926 | need_entry = NEED_FULL_PLT; |
| 2927 | break; |
| 2928 | |
| 2929 | case R_IA64_IMM14: |
| 2930 | case R_IA64_IMM22: |
| 2931 | case R_IA64_IMM64: |
| 2932 | case R_IA64_DIR32MSB: |
| 2933 | case R_IA64_DIR32LSB: |
| 2934 | case R_IA64_DIR64MSB: |
| 2935 | case R_IA64_DIR64LSB: |
| 2936 | /* Shared objects will always need at least a REL relocation. */ |
| 2937 | if (info->shared || maybe_dynamic) |
| 2938 | need_entry = NEED_DYNREL; |
| 2939 | dynrel_type = R_IA64_DIRNNLSB; |
| 2940 | break; |
| 2941 | |
| 2942 | case R_IA64_IPLTMSB: |
| 2943 | case R_IA64_IPLTLSB: |
| 2944 | /* Shared objects will always need at least a REL relocation. */ |
| 2945 | if (info->shared || maybe_dynamic) |
| 2946 | need_entry = NEED_DYNREL; |
| 2947 | dynrel_type = R_IA64_IPLTLSB; |
| 2948 | break; |
| 2949 | |
| 2950 | case R_IA64_PCREL22: |
| 2951 | case R_IA64_PCREL64I: |
| 2952 | case R_IA64_PCREL32MSB: |
| 2953 | case R_IA64_PCREL32LSB: |
| 2954 | case R_IA64_PCREL64MSB: |
| 2955 | case R_IA64_PCREL64LSB: |
| 2956 | if (maybe_dynamic) |
| 2957 | need_entry = NEED_DYNREL; |
| 2958 | dynrel_type = R_IA64_PCRELNNLSB; |
| 2959 | break; |
| 2960 | } |
| 2961 | |
| 2962 | if (!need_entry) |
| 2963 | continue; |
| 2964 | |
| 2965 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); |
| 2966 | |
| 2967 | /* Record whether or not this is a local symbol. */ |
| 2968 | dyn_i->h = h; |
| 2969 | |
| 2970 | /* Create what's needed. */ |
| 2971 | if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL |
| 2972 | | NEED_DTPMOD | NEED_DTPREL)) |
| 2973 | { |
| 2974 | if (!got) |
| 2975 | { |
| 2976 | got = get_got (abfd, info, ia64_info); |
| 2977 | if (!got) |
| 2978 | return FALSE; |
| 2979 | } |
| 2980 | if (need_entry & NEED_GOT) |
| 2981 | dyn_i->want_got = 1; |
| 2982 | if (need_entry & NEED_GOTX) |
| 2983 | dyn_i->want_gotx = 1; |
| 2984 | if (need_entry & NEED_TPREL) |
| 2985 | dyn_i->want_tprel = 1; |
| 2986 | if (need_entry & NEED_DTPMOD) |
| 2987 | dyn_i->want_dtpmod = 1; |
| 2988 | if (need_entry & NEED_DTPREL) |
| 2989 | dyn_i->want_dtprel = 1; |
| 2990 | } |
| 2991 | if (need_entry & NEED_FPTR) |
| 2992 | { |
| 2993 | if (!fptr) |
| 2994 | { |
| 2995 | fptr = get_fptr (abfd, info, ia64_info); |
| 2996 | if (!fptr) |
| 2997 | return FALSE; |
| 2998 | } |
| 2999 | |
| 3000 | /* FPTRs for shared libraries are allocated by the dynamic |
| 3001 | linker. Make sure this local symbol will appear in the |
| 3002 | dynamic symbol table. */ |
| 3003 | if (!h && info->shared) |
| 3004 | { |
| 3005 | if (! (bfd_elf_link_record_local_dynamic_symbol |
| 3006 | (info, abfd, (long) r_symndx))) |
| 3007 | return FALSE; |
| 3008 | } |
| 3009 | |
| 3010 | dyn_i->want_fptr = 1; |
| 3011 | } |
| 3012 | if (need_entry & NEED_LTOFF_FPTR) |
| 3013 | dyn_i->want_ltoff_fptr = 1; |
| 3014 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) |
| 3015 | { |
| 3016 | if (!ia64_info->root.dynobj) |
| 3017 | ia64_info->root.dynobj = abfd; |
| 3018 | h->needs_plt = 1; |
| 3019 | dyn_i->want_plt = 1; |
| 3020 | } |
| 3021 | if (need_entry & NEED_FULL_PLT) |
| 3022 | dyn_i->want_plt2 = 1; |
| 3023 | if (need_entry & NEED_PLTOFF) |
| 3024 | { |
| 3025 | /* This is needed here, in case @pltoff is used in a non-shared |
| 3026 | link. */ |
| 3027 | if (!pltoff) |
| 3028 | { |
| 3029 | pltoff = get_pltoff (abfd, info, ia64_info); |
| 3030 | if (!pltoff) |
| 3031 | return FALSE; |
| 3032 | } |
| 3033 | |
| 3034 | dyn_i->want_pltoff = 1; |
| 3035 | } |
| 3036 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) |
| 3037 | { |
| 3038 | if (!srel) |
| 3039 | { |
| 3040 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); |
| 3041 | if (!srel) |
| 3042 | return FALSE; |
| 3043 | } |
| 3044 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, |
| 3045 | (sec->flags & SEC_READONLY) != 0)) |
| 3046 | return FALSE; |
| 3047 | } |
| 3048 | } |
| 3049 | |
| 3050 | return TRUE; |
| 3051 | } |
| 3052 | |
| 3053 | /* For cleanliness, and potentially faster dynamic loading, allocate |
| 3054 | external GOT entries first. */ |
| 3055 | |
| 3056 | static bfd_boolean |
| 3057 | allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3058 | PTR data) |
| 3059 | { |
| 3060 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3061 | |
| 3062 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 3063 | && ! dyn_i->want_fptr |
| 3064 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) |
| 3065 | { |
| 3066 | dyn_i->got_offset = x->ofs; |
| 3067 | x->ofs += 8; |
| 3068 | } |
| 3069 | if (dyn_i->want_tprel) |
| 3070 | { |
| 3071 | dyn_i->tprel_offset = x->ofs; |
| 3072 | x->ofs += 8; |
| 3073 | } |
| 3074 | if (dyn_i->want_dtpmod) |
| 3075 | { |
| 3076 | if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) |
| 3077 | { |
| 3078 | dyn_i->dtpmod_offset = x->ofs; |
| 3079 | x->ofs += 8; |
| 3080 | } |
| 3081 | else |
| 3082 | { |
| 3083 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 3084 | |
| 3085 | ia64_info = elfNN_ia64_hash_table (x->info); |
| 3086 | if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) |
| 3087 | { |
| 3088 | ia64_info->self_dtpmod_offset = x->ofs; |
| 3089 | x->ofs += 8; |
| 3090 | } |
| 3091 | dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; |
| 3092 | } |
| 3093 | } |
| 3094 | if (dyn_i->want_dtprel) |
| 3095 | { |
| 3096 | dyn_i->dtprel_offset = x->ofs; |
| 3097 | x->ofs += 8; |
| 3098 | } |
| 3099 | return TRUE; |
| 3100 | } |
| 3101 | |
| 3102 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ |
| 3103 | |
| 3104 | static bfd_boolean |
| 3105 | allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3106 | PTR data) |
| 3107 | { |
| 3108 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3109 | |
| 3110 | if (dyn_i->want_got |
| 3111 | && dyn_i->want_fptr |
| 3112 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) |
| 3113 | { |
| 3114 | dyn_i->got_offset = x->ofs; |
| 3115 | x->ofs += 8; |
| 3116 | } |
| 3117 | return TRUE; |
| 3118 | } |
| 3119 | |
| 3120 | /* Lastly, allocate all the GOT entries for local data. */ |
| 3121 | |
| 3122 | static bfd_boolean |
| 3123 | allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3124 | PTR data) |
| 3125 | { |
| 3126 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3127 | |
| 3128 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 3129 | && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) |
| 3130 | { |
| 3131 | dyn_i->got_offset = x->ofs; |
| 3132 | x->ofs += 8; |
| 3133 | } |
| 3134 | return TRUE; |
| 3135 | } |
| 3136 | |
| 3137 | /* Search for the index of a global symbol in it's defining object file. */ |
| 3138 | |
| 3139 | static long |
| 3140 | global_sym_index (struct elf_link_hash_entry *h) |
| 3141 | { |
| 3142 | struct elf_link_hash_entry **p; |
| 3143 | bfd *obj; |
| 3144 | |
| 3145 | BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| 3146 | || h->root.type == bfd_link_hash_defweak); |
| 3147 | |
| 3148 | obj = h->root.u.def.section->owner; |
| 3149 | for (p = elf_sym_hashes (obj); *p != h; ++p) |
| 3150 | continue; |
| 3151 | |
| 3152 | return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; |
| 3153 | } |
| 3154 | |
| 3155 | /* Allocate function descriptors. We can do these for every function |
| 3156 | in a main executable that is not exported. */ |
| 3157 | |
| 3158 | static bfd_boolean |
| 3159 | allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data) |
| 3160 | { |
| 3161 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3162 | |
| 3163 | if (dyn_i->want_fptr) |
| 3164 | { |
| 3165 | struct elf_link_hash_entry *h = dyn_i->h; |
| 3166 | |
| 3167 | if (h) |
| 3168 | while (h->root.type == bfd_link_hash_indirect |
| 3169 | || h->root.type == bfd_link_hash_warning) |
| 3170 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3171 | |
| 3172 | if (!x->info->executable |
| 3173 | && (!h |
| 3174 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 3175 | || (h->root.type != bfd_link_hash_undefweak |
| 3176 | && h->root.type != bfd_link_hash_undefined))) |
| 3177 | { |
| 3178 | if (h && h->dynindx == -1) |
| 3179 | { |
| 3180 | BFD_ASSERT ((h->root.type == bfd_link_hash_defined) |
| 3181 | || (h->root.type == bfd_link_hash_defweak)); |
| 3182 | |
| 3183 | if (!bfd_elf_link_record_local_dynamic_symbol |
| 3184 | (x->info, h->root.u.def.section->owner, |
| 3185 | global_sym_index (h))) |
| 3186 | return FALSE; |
| 3187 | } |
| 3188 | |
| 3189 | dyn_i->want_fptr = 0; |
| 3190 | } |
| 3191 | else if (h == NULL || h->dynindx == -1) |
| 3192 | { |
| 3193 | dyn_i->fptr_offset = x->ofs; |
| 3194 | x->ofs += 16; |
| 3195 | } |
| 3196 | else |
| 3197 | dyn_i->want_fptr = 0; |
| 3198 | } |
| 3199 | return TRUE; |
| 3200 | } |
| 3201 | |
| 3202 | /* Allocate all the minimal PLT entries. */ |
| 3203 | |
| 3204 | static bfd_boolean |
| 3205 | allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3206 | PTR data) |
| 3207 | { |
| 3208 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3209 | |
| 3210 | if (dyn_i->want_plt) |
| 3211 | { |
| 3212 | struct elf_link_hash_entry *h = dyn_i->h; |
| 3213 | |
| 3214 | if (h) |
| 3215 | while (h->root.type == bfd_link_hash_indirect |
| 3216 | || h->root.type == bfd_link_hash_warning) |
| 3217 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3218 | |
| 3219 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ |
| 3220 | if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) |
| 3221 | { |
| 3222 | bfd_size_type offset = x->ofs; |
| 3223 | if (offset == 0) |
| 3224 | offset = PLT_HEADER_SIZE; |
| 3225 | dyn_i->plt_offset = offset; |
| 3226 | x->ofs = offset + PLT_MIN_ENTRY_SIZE; |
| 3227 | |
| 3228 | dyn_i->want_pltoff = 1; |
| 3229 | } |
| 3230 | else |
| 3231 | { |
| 3232 | dyn_i->want_plt = 0; |
| 3233 | dyn_i->want_plt2 = 0; |
| 3234 | } |
| 3235 | } |
| 3236 | return TRUE; |
| 3237 | } |
| 3238 | |
| 3239 | /* Allocate all the full PLT entries. */ |
| 3240 | |
| 3241 | static bfd_boolean |
| 3242 | allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3243 | PTR data) |
| 3244 | { |
| 3245 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3246 | |
| 3247 | if (dyn_i->want_plt2) |
| 3248 | { |
| 3249 | struct elf_link_hash_entry *h = dyn_i->h; |
| 3250 | bfd_size_type ofs = x->ofs; |
| 3251 | |
| 3252 | dyn_i->plt2_offset = ofs; |
| 3253 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; |
| 3254 | |
| 3255 | while (h->root.type == bfd_link_hash_indirect |
| 3256 | || h->root.type == bfd_link_hash_warning) |
| 3257 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3258 | dyn_i->h->plt.offset = ofs; |
| 3259 | } |
| 3260 | return TRUE; |
| 3261 | } |
| 3262 | |
| 3263 | /* Allocate all the PLTOFF entries requested by relocations and |
| 3264 | plt entries. We can't share space with allocated FPTR entries, |
| 3265 | because the latter are not necessarily addressable by the GP. |
| 3266 | ??? Relaxation might be able to determine that they are. */ |
| 3267 | |
| 3268 | static bfd_boolean |
| 3269 | allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3270 | PTR data) |
| 3271 | { |
| 3272 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3273 | |
| 3274 | if (dyn_i->want_pltoff) |
| 3275 | { |
| 3276 | dyn_i->pltoff_offset = x->ofs; |
| 3277 | x->ofs += 16; |
| 3278 | } |
| 3279 | return TRUE; |
| 3280 | } |
| 3281 | |
| 3282 | /* Allocate dynamic relocations for those symbols that turned out |
| 3283 | to be dynamic. */ |
| 3284 | |
| 3285 | static bfd_boolean |
| 3286 | allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3287 | PTR data) |
| 3288 | { |
| 3289 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; |
| 3290 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 3291 | struct elfNN_ia64_dyn_reloc_entry *rent; |
| 3292 | bfd_boolean dynamic_symbol, shared, resolved_zero; |
| 3293 | |
| 3294 | ia64_info = elfNN_ia64_hash_table (x->info); |
| 3295 | |
| 3296 | /* Note that this can't be used in relation to FPTR relocs below. */ |
| 3297 | dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); |
| 3298 | |
| 3299 | shared = x->info->shared; |
| 3300 | resolved_zero = (dyn_i->h |
| 3301 | && ELF_ST_VISIBILITY (dyn_i->h->other) |
| 3302 | && dyn_i->h->root.type == bfd_link_hash_undefweak); |
| 3303 | |
| 3304 | /* Take care of the GOT and PLT relocations. */ |
| 3305 | |
| 3306 | if ((!resolved_zero |
| 3307 | && (dynamic_symbol || shared) |
| 3308 | && (dyn_i->want_got || dyn_i->want_gotx)) |
| 3309 | || (dyn_i->want_ltoff_fptr |
| 3310 | && dyn_i->h |
| 3311 | && dyn_i->h->dynindx != -1)) |
| 3312 | { |
| 3313 | if (!dyn_i->want_ltoff_fptr |
| 3314 | || !x->info->pie |
| 3315 | || dyn_i->h == NULL |
| 3316 | || dyn_i->h->root.type != bfd_link_hash_undefweak) |
| 3317 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 3318 | } |
| 3319 | if ((dynamic_symbol || shared) && dyn_i->want_tprel) |
| 3320 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 3321 | if (dynamic_symbol && dyn_i->want_dtpmod) |
| 3322 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 3323 | if (dynamic_symbol && dyn_i->want_dtprel) |
| 3324 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 3325 | |
| 3326 | if (x->only_got) |
| 3327 | return TRUE; |
| 3328 | |
| 3329 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) |
| 3330 | { |
| 3331 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) |
| 3332 | ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); |
| 3333 | } |
| 3334 | |
| 3335 | if (!resolved_zero && dyn_i->want_pltoff) |
| 3336 | { |
| 3337 | bfd_size_type t = 0; |
| 3338 | |
| 3339 | /* Dynamic symbols get one IPLT relocation. Local symbols in |
| 3340 | shared libraries get two REL relocations. Local symbols in |
| 3341 | main applications get nothing. */ |
| 3342 | if (dynamic_symbol) |
| 3343 | t = sizeof (ElfNN_External_Rela); |
| 3344 | else if (shared) |
| 3345 | t = 2 * sizeof (ElfNN_External_Rela); |
| 3346 | |
| 3347 | ia64_info->rel_pltoff_sec->size += t; |
| 3348 | } |
| 3349 | |
| 3350 | /* Take care of the normal data relocations. */ |
| 3351 | |
| 3352 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 3353 | { |
| 3354 | int count = rent->count; |
| 3355 | |
| 3356 | switch (rent->type) |
| 3357 | { |
| 3358 | case R_IA64_FPTR32LSB: |
| 3359 | case R_IA64_FPTR64LSB: |
| 3360 | /* Allocate one iff !want_fptr and not PIE, which by this point |
| 3361 | will be true only if we're actually allocating one statically |
| 3362 | in the main executable. Position independent executables |
| 3363 | need a relative reloc. */ |
| 3364 | if (dyn_i->want_fptr && !x->info->pie) |
| 3365 | continue; |
| 3366 | break; |
| 3367 | case R_IA64_PCREL32LSB: |
| 3368 | case R_IA64_PCREL64LSB: |
| 3369 | if (!dynamic_symbol) |
| 3370 | continue; |
| 3371 | break; |
| 3372 | case R_IA64_DIR32LSB: |
| 3373 | case R_IA64_DIR64LSB: |
| 3374 | if (!dynamic_symbol && !shared) |
| 3375 | continue; |
| 3376 | break; |
| 3377 | case R_IA64_IPLTLSB: |
| 3378 | if (!dynamic_symbol && !shared) |
| 3379 | continue; |
| 3380 | /* Use two REL relocations for IPLT relocations |
| 3381 | against local symbols. */ |
| 3382 | if (!dynamic_symbol) |
| 3383 | count *= 2; |
| 3384 | break; |
| 3385 | case R_IA64_DTPREL32LSB: |
| 3386 | case R_IA64_TPREL64LSB: |
| 3387 | case R_IA64_DTPREL64LSB: |
| 3388 | case R_IA64_DTPMOD64LSB: |
| 3389 | break; |
| 3390 | default: |
| 3391 | abort (); |
| 3392 | } |
| 3393 | if (rent->reltext) |
| 3394 | ia64_info->reltext = 1; |
| 3395 | rent->srel->size += sizeof (ElfNN_External_Rela) * count; |
| 3396 | } |
| 3397 | |
| 3398 | return TRUE; |
| 3399 | } |
| 3400 | |
| 3401 | static bfd_boolean |
| 3402 | elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3403 | struct elf_link_hash_entry *h) |
| 3404 | { |
| 3405 | /* ??? Undefined symbols with PLT entries should be re-defined |
| 3406 | to be the PLT entry. */ |
| 3407 | |
| 3408 | /* If this is a weak symbol, and there is a real definition, the |
| 3409 | processor independent code will have arranged for us to see the |
| 3410 | real definition first, and we can just use the same value. */ |
| 3411 | if (h->u.weakdef != NULL) |
| 3412 | { |
| 3413 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 3414 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 3415 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 3416 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 3417 | return TRUE; |
| 3418 | } |
| 3419 | |
| 3420 | /* If this is a reference to a symbol defined by a dynamic object which |
| 3421 | is not a function, we might allocate the symbol in our .dynbss section |
| 3422 | and allocate a COPY dynamic relocation. |
| 3423 | |
| 3424 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort |
| 3425 | of hackery. */ |
| 3426 | |
| 3427 | return TRUE; |
| 3428 | } |
| 3429 | |
| 3430 | static bfd_boolean |
| 3431 | elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 3432 | struct bfd_link_info *info) |
| 3433 | { |
| 3434 | struct elfNN_ia64_allocate_data data; |
| 3435 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 3436 | asection *sec; |
| 3437 | bfd *dynobj; |
| 3438 | bfd_boolean relplt = FALSE; |
| 3439 | |
| 3440 | dynobj = elf_hash_table(info)->dynobj; |
| 3441 | ia64_info = elfNN_ia64_hash_table (info); |
| 3442 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; |
| 3443 | BFD_ASSERT(dynobj != NULL); |
| 3444 | data.info = info; |
| 3445 | |
| 3446 | /* Set the contents of the .interp section to the interpreter. */ |
| 3447 | if (ia64_info->root.dynamic_sections_created |
| 3448 | && info->executable) |
| 3449 | { |
| 3450 | sec = bfd_get_section_by_name (dynobj, ".interp"); |
| 3451 | BFD_ASSERT (sec != NULL); |
| 3452 | sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; |
| 3453 | sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; |
| 3454 | } |
| 3455 | |
| 3456 | /* Allocate the GOT entries. */ |
| 3457 | |
| 3458 | if (ia64_info->got_sec) |
| 3459 | { |
| 3460 | data.ofs = 0; |
| 3461 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); |
| 3462 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); |
| 3463 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); |
| 3464 | ia64_info->got_sec->size = data.ofs; |
| 3465 | } |
| 3466 | |
| 3467 | /* Allocate the FPTR entries. */ |
| 3468 | |
| 3469 | if (ia64_info->fptr_sec) |
| 3470 | { |
| 3471 | data.ofs = 0; |
| 3472 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); |
| 3473 | ia64_info->fptr_sec->size = data.ofs; |
| 3474 | } |
| 3475 | |
| 3476 | /* Now that we've seen all of the input files, we can decide which |
| 3477 | symbols need plt entries. Allocate the minimal PLT entries first. |
| 3478 | We do this even though dynamic_sections_created may be FALSE, because |
| 3479 | this has the side-effect of clearing want_plt and want_plt2. */ |
| 3480 | |
| 3481 | data.ofs = 0; |
| 3482 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); |
| 3483 | |
| 3484 | ia64_info->minplt_entries = 0; |
| 3485 | if (data.ofs) |
| 3486 | { |
| 3487 | ia64_info->minplt_entries |
| 3488 | = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; |
| 3489 | } |
| 3490 | |
| 3491 | /* Align the pointer for the plt2 entries. */ |
| 3492 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; |
| 3493 | |
| 3494 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); |
| 3495 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) |
| 3496 | { |
| 3497 | /* FIXME: we always reserve the memory for dynamic linker even if |
| 3498 | there are no PLT entries since dynamic linker may assume the |
| 3499 | reserved memory always exists. */ |
| 3500 | |
| 3501 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); |
| 3502 | |
| 3503 | ia64_info->plt_sec->size = data.ofs; |
| 3504 | |
| 3505 | /* If we've got a .plt, we need some extra memory for the dynamic |
| 3506 | linker. We stuff these in .got.plt. */ |
| 3507 | sec = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 3508 | sec->size = 8 * PLT_RESERVED_WORDS; |
| 3509 | } |
| 3510 | |
| 3511 | /* Allocate the PLTOFF entries. */ |
| 3512 | |
| 3513 | if (ia64_info->pltoff_sec) |
| 3514 | { |
| 3515 | data.ofs = 0; |
| 3516 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); |
| 3517 | ia64_info->pltoff_sec->size = data.ofs; |
| 3518 | } |
| 3519 | |
| 3520 | if (ia64_info->root.dynamic_sections_created) |
| 3521 | { |
| 3522 | /* Allocate space for the dynamic relocations that turned out to be |
| 3523 | required. */ |
| 3524 | |
| 3525 | if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
| 3526 | ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela); |
| 3527 | data.only_got = FALSE; |
| 3528 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); |
| 3529 | } |
| 3530 | |
| 3531 | /* We have now determined the sizes of the various dynamic sections. |
| 3532 | Allocate memory for them. */ |
| 3533 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
| 3534 | { |
| 3535 | bfd_boolean strip; |
| 3536 | |
| 3537 | if (!(sec->flags & SEC_LINKER_CREATED)) |
| 3538 | continue; |
| 3539 | |
| 3540 | /* If we don't need this section, strip it from the output file. |
| 3541 | There were several sections primarily related to dynamic |
| 3542 | linking that must be create before the linker maps input |
| 3543 | sections to output sections. The linker does that before |
| 3544 | bfd_elf_size_dynamic_sections is called, and it is that |
| 3545 | function which decides whether anything needs to go into |
| 3546 | these sections. */ |
| 3547 | |
| 3548 | strip = (sec->size == 0); |
| 3549 | |
| 3550 | if (sec == ia64_info->got_sec) |
| 3551 | strip = FALSE; |
| 3552 | else if (sec == ia64_info->rel_got_sec) |
| 3553 | { |
| 3554 | if (strip) |
| 3555 | ia64_info->rel_got_sec = NULL; |
| 3556 | else |
| 3557 | /* We use the reloc_count field as a counter if we need to |
| 3558 | copy relocs into the output file. */ |
| 3559 | sec->reloc_count = 0; |
| 3560 | } |
| 3561 | else if (sec == ia64_info->fptr_sec) |
| 3562 | { |
| 3563 | if (strip) |
| 3564 | ia64_info->fptr_sec = NULL; |
| 3565 | } |
| 3566 | else if (sec == ia64_info->rel_fptr_sec) |
| 3567 | { |
| 3568 | if (strip) |
| 3569 | ia64_info->rel_fptr_sec = NULL; |
| 3570 | else |
| 3571 | /* We use the reloc_count field as a counter if we need to |
| 3572 | copy relocs into the output file. */ |
| 3573 | sec->reloc_count = 0; |
| 3574 | } |
| 3575 | else if (sec == ia64_info->plt_sec) |
| 3576 | { |
| 3577 | if (strip) |
| 3578 | ia64_info->plt_sec = NULL; |
| 3579 | } |
| 3580 | else if (sec == ia64_info->pltoff_sec) |
| 3581 | { |
| 3582 | if (strip) |
| 3583 | ia64_info->pltoff_sec = NULL; |
| 3584 | } |
| 3585 | else if (sec == ia64_info->rel_pltoff_sec) |
| 3586 | { |
| 3587 | if (strip) |
| 3588 | ia64_info->rel_pltoff_sec = NULL; |
| 3589 | else |
| 3590 | { |
| 3591 | relplt = TRUE; |
| 3592 | /* We use the reloc_count field as a counter if we need to |
| 3593 | copy relocs into the output file. */ |
| 3594 | sec->reloc_count = 0; |
| 3595 | } |
| 3596 | } |
| 3597 | else |
| 3598 | { |
| 3599 | const char *name; |
| 3600 | |
| 3601 | /* It's OK to base decisions on the section name, because none |
| 3602 | of the dynobj section names depend upon the input files. */ |
| 3603 | name = bfd_get_section_name (dynobj, sec); |
| 3604 | |
| 3605 | if (strcmp (name, ".got.plt") == 0) |
| 3606 | strip = FALSE; |
| 3607 | else if (CONST_STRNEQ (name, ".rel")) |
| 3608 | { |
| 3609 | if (!strip) |
| 3610 | { |
| 3611 | /* We use the reloc_count field as a counter if we need to |
| 3612 | copy relocs into the output file. */ |
| 3613 | sec->reloc_count = 0; |
| 3614 | } |
| 3615 | } |
| 3616 | else |
| 3617 | continue; |
| 3618 | } |
| 3619 | |
| 3620 | if (strip) |
| 3621 | sec->flags |= SEC_EXCLUDE; |
| 3622 | else |
| 3623 | { |
| 3624 | /* Allocate memory for the section contents. */ |
| 3625 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
| 3626 | if (sec->contents == NULL && sec->size != 0) |
| 3627 | return FALSE; |
| 3628 | } |
| 3629 | } |
| 3630 | |
| 3631 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3632 | { |
| 3633 | /* Add some entries to the .dynamic section. We fill in the values |
| 3634 | later (in finish_dynamic_sections) but we must add the entries now |
| 3635 | so that we get the correct size for the .dynamic section. */ |
| 3636 | |
| 3637 | if (info->executable) |
| 3638 | { |
| 3639 | /* The DT_DEBUG entry is filled in by the dynamic linker and used |
| 3640 | by the debugger. */ |
| 3641 | #define add_dynamic_entry(TAG, VAL) \ |
| 3642 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 3643 | |
| 3644 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 3645 | return FALSE; |
| 3646 | } |
| 3647 | |
| 3648 | if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) |
| 3649 | return FALSE; |
| 3650 | if (!add_dynamic_entry (DT_PLTGOT, 0)) |
| 3651 | return FALSE; |
| 3652 | |
| 3653 | if (relplt) |
| 3654 | { |
| 3655 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
| 3656 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 3657 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 3658 | return FALSE; |
| 3659 | } |
| 3660 | |
| 3661 | if (!add_dynamic_entry (DT_RELA, 0) |
| 3662 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 3663 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) |
| 3664 | return FALSE; |
| 3665 | |
| 3666 | if (ia64_info->reltext) |
| 3667 | { |
| 3668 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 3669 | return FALSE; |
| 3670 | info->flags |= DF_TEXTREL; |
| 3671 | } |
| 3672 | } |
| 3673 | |
| 3674 | /* ??? Perhaps force __gp local. */ |
| 3675 | |
| 3676 | return TRUE; |
| 3677 | } |
| 3678 | |
| 3679 | static bfd_reloc_status_type |
| 3680 | elfNN_ia64_install_value (bfd_byte *hit_addr, bfd_vma v, |
| 3681 | unsigned int r_type) |
| 3682 | { |
| 3683 | const struct ia64_operand *op; |
| 3684 | int bigendian = 0, shift = 0; |
| 3685 | bfd_vma t0, t1, dword; |
| 3686 | ia64_insn insn; |
| 3687 | enum ia64_opnd opnd; |
| 3688 | const char *err; |
| 3689 | size_t size = 8; |
| 3690 | #ifdef BFD_HOST_U_64_BIT |
| 3691 | BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v; |
| 3692 | #else |
| 3693 | bfd_vma val = v; |
| 3694 | #endif |
| 3695 | |
| 3696 | opnd = IA64_OPND_NIL; |
| 3697 | switch (r_type) |
| 3698 | { |
| 3699 | case R_IA64_NONE: |
| 3700 | case R_IA64_LDXMOV: |
| 3701 | return bfd_reloc_ok; |
| 3702 | |
| 3703 | /* Instruction relocations. */ |
| 3704 | |
| 3705 | case R_IA64_IMM14: |
| 3706 | case R_IA64_TPREL14: |
| 3707 | case R_IA64_DTPREL14: |
| 3708 | opnd = IA64_OPND_IMM14; |
| 3709 | break; |
| 3710 | |
| 3711 | case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break; |
| 3712 | case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break; |
| 3713 | case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break; |
| 3714 | case R_IA64_PCREL21B: |
| 3715 | case R_IA64_PCREL21BI: |
| 3716 | opnd = IA64_OPND_TGT25c; |
| 3717 | break; |
| 3718 | |
| 3719 | case R_IA64_IMM22: |
| 3720 | case R_IA64_GPREL22: |
| 3721 | case R_IA64_LTOFF22: |
| 3722 | case R_IA64_LTOFF22X: |
| 3723 | case R_IA64_PLTOFF22: |
| 3724 | case R_IA64_PCREL22: |
| 3725 | case R_IA64_LTOFF_FPTR22: |
| 3726 | case R_IA64_TPREL22: |
| 3727 | case R_IA64_DTPREL22: |
| 3728 | case R_IA64_LTOFF_TPREL22: |
| 3729 | case R_IA64_LTOFF_DTPMOD22: |
| 3730 | case R_IA64_LTOFF_DTPREL22: |
| 3731 | opnd = IA64_OPND_IMM22; |
| 3732 | break; |
| 3733 | |
| 3734 | case R_IA64_IMM64: |
| 3735 | case R_IA64_GPREL64I: |
| 3736 | case R_IA64_LTOFF64I: |
| 3737 | case R_IA64_PLTOFF64I: |
| 3738 | case R_IA64_PCREL64I: |
| 3739 | case R_IA64_FPTR64I: |
| 3740 | case R_IA64_LTOFF_FPTR64I: |
| 3741 | case R_IA64_TPREL64I: |
| 3742 | case R_IA64_DTPREL64I: |
| 3743 | opnd = IA64_OPND_IMMU64; |
| 3744 | break; |
| 3745 | |
| 3746 | /* Data relocations. */ |
| 3747 | |
| 3748 | case R_IA64_DIR32MSB: |
| 3749 | case R_IA64_GPREL32MSB: |
| 3750 | case R_IA64_FPTR32MSB: |
| 3751 | case R_IA64_PCREL32MSB: |
| 3752 | case R_IA64_LTOFF_FPTR32MSB: |
| 3753 | case R_IA64_SEGREL32MSB: |
| 3754 | case R_IA64_SECREL32MSB: |
| 3755 | case R_IA64_LTV32MSB: |
| 3756 | case R_IA64_DTPREL32MSB: |
| 3757 | size = 4; bigendian = 1; |
| 3758 | break; |
| 3759 | |
| 3760 | case R_IA64_DIR32LSB: |
| 3761 | case R_IA64_GPREL32LSB: |
| 3762 | case R_IA64_FPTR32LSB: |
| 3763 | case R_IA64_PCREL32LSB: |
| 3764 | case R_IA64_LTOFF_FPTR32LSB: |
| 3765 | case R_IA64_SEGREL32LSB: |
| 3766 | case R_IA64_SECREL32LSB: |
| 3767 | case R_IA64_LTV32LSB: |
| 3768 | case R_IA64_DTPREL32LSB: |
| 3769 | size = 4; bigendian = 0; |
| 3770 | break; |
| 3771 | |
| 3772 | case R_IA64_DIR64MSB: |
| 3773 | case R_IA64_GPREL64MSB: |
| 3774 | case R_IA64_PLTOFF64MSB: |
| 3775 | case R_IA64_FPTR64MSB: |
| 3776 | case R_IA64_PCREL64MSB: |
| 3777 | case R_IA64_LTOFF_FPTR64MSB: |
| 3778 | case R_IA64_SEGREL64MSB: |
| 3779 | case R_IA64_SECREL64MSB: |
| 3780 | case R_IA64_LTV64MSB: |
| 3781 | case R_IA64_TPREL64MSB: |
| 3782 | case R_IA64_DTPMOD64MSB: |
| 3783 | case R_IA64_DTPREL64MSB: |
| 3784 | size = 8; bigendian = 1; |
| 3785 | break; |
| 3786 | |
| 3787 | case R_IA64_DIR64LSB: |
| 3788 | case R_IA64_GPREL64LSB: |
| 3789 | case R_IA64_PLTOFF64LSB: |
| 3790 | case R_IA64_FPTR64LSB: |
| 3791 | case R_IA64_PCREL64LSB: |
| 3792 | case R_IA64_LTOFF_FPTR64LSB: |
| 3793 | case R_IA64_SEGREL64LSB: |
| 3794 | case R_IA64_SECREL64LSB: |
| 3795 | case R_IA64_LTV64LSB: |
| 3796 | case R_IA64_TPREL64LSB: |
| 3797 | case R_IA64_DTPMOD64LSB: |
| 3798 | case R_IA64_DTPREL64LSB: |
| 3799 | size = 8; bigendian = 0; |
| 3800 | break; |
| 3801 | |
| 3802 | /* Unsupported / Dynamic relocations. */ |
| 3803 | default: |
| 3804 | return bfd_reloc_notsupported; |
| 3805 | } |
| 3806 | |
| 3807 | switch (opnd) |
| 3808 | { |
| 3809 | case IA64_OPND_IMMU64: |
| 3810 | hit_addr -= (long) hit_addr & 0x3; |
| 3811 | t0 = bfd_getl64 (hit_addr); |
| 3812 | t1 = bfd_getl64 (hit_addr + 8); |
| 3813 | |
| 3814 | /* tmpl/s: bits 0.. 5 in t0 |
| 3815 | slot 0: bits 5..45 in t0 |
| 3816 | slot 1: bits 46..63 in t0, bits 0..22 in t1 |
| 3817 | slot 2: bits 23..63 in t1 */ |
| 3818 | |
| 3819 | /* First, clear the bits that form the 64 bit constant. */ |
| 3820 | t0 &= ~(0x3ffffLL << 46); |
| 3821 | t1 &= ~(0x7fffffLL |
| 3822 | | (( (0x07fLL << 13) | (0x1ffLL << 27) |
| 3823 | | (0x01fLL << 22) | (0x001LL << 21) |
| 3824 | | (0x001LL << 36)) << 23)); |
| 3825 | |
| 3826 | t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */ |
| 3827 | t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */ |
| 3828 | t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */ |
| 3829 | | (((val >> 7) & 0x1ff) << 27) /* imm9d */ |
| 3830 | | (((val >> 16) & 0x01f) << 22) /* imm5c */ |
| 3831 | | (((val >> 21) & 0x001) << 21) /* ic */ |
| 3832 | | (((val >> 63) & 0x001) << 36)) << 23; /* i */ |
| 3833 | |
| 3834 | bfd_putl64 (t0, hit_addr); |
| 3835 | bfd_putl64 (t1, hit_addr + 8); |
| 3836 | break; |
| 3837 | |
| 3838 | case IA64_OPND_TGT64: |
| 3839 | hit_addr -= (long) hit_addr & 0x3; |
| 3840 | t0 = bfd_getl64 (hit_addr); |
| 3841 | t1 = bfd_getl64 (hit_addr + 8); |
| 3842 | |
| 3843 | /* tmpl/s: bits 0.. 5 in t0 |
| 3844 | slot 0: bits 5..45 in t0 |
| 3845 | slot 1: bits 46..63 in t0, bits 0..22 in t1 |
| 3846 | slot 2: bits 23..63 in t1 */ |
| 3847 | |
| 3848 | /* First, clear the bits that form the 64 bit constant. */ |
| 3849 | t0 &= ~(0x3ffffLL << 46); |
| 3850 | t1 &= ~(0x7fffffLL |
| 3851 | | ((1LL << 36 | 0xfffffLL << 13) << 23)); |
| 3852 | |
| 3853 | val >>= 4; |
| 3854 | t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */ |
| 3855 | t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */ |
| 3856 | t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */ |
| 3857 | | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */ |
| 3858 | |
| 3859 | bfd_putl64 (t0, hit_addr); |
| 3860 | bfd_putl64 (t1, hit_addr + 8); |
| 3861 | break; |
| 3862 | |
| 3863 | default: |
| 3864 | switch ((long) hit_addr & 0x3) |
| 3865 | { |
| 3866 | case 0: shift = 5; break; |
| 3867 | case 1: shift = 14; hit_addr += 3; break; |
| 3868 | case 2: shift = 23; hit_addr += 6; break; |
| 3869 | case 3: return bfd_reloc_notsupported; /* shouldn't happen... */ |
| 3870 | } |
| 3871 | dword = bfd_getl64 (hit_addr); |
| 3872 | insn = (dword >> shift) & 0x1ffffffffffLL; |
| 3873 | |
| 3874 | op = elf64_ia64_operands + opnd; |
| 3875 | err = (*op->insert) (op, val, &insn); |
| 3876 | if (err) |
| 3877 | return bfd_reloc_overflow; |
| 3878 | |
| 3879 | dword &= ~(0x1ffffffffffLL << shift); |
| 3880 | dword |= (insn << shift); |
| 3881 | bfd_putl64 (dword, hit_addr); |
| 3882 | break; |
| 3883 | |
| 3884 | case IA64_OPND_NIL: |
| 3885 | /* A data relocation. */ |
| 3886 | if (bigendian) |
| 3887 | if (size == 4) |
| 3888 | bfd_putb32 (val, hit_addr); |
| 3889 | else |
| 3890 | bfd_putb64 (val, hit_addr); |
| 3891 | else |
| 3892 | if (size == 4) |
| 3893 | bfd_putl32 (val, hit_addr); |
| 3894 | else |
| 3895 | bfd_putl64 (val, hit_addr); |
| 3896 | break; |
| 3897 | } |
| 3898 | |
| 3899 | return bfd_reloc_ok; |
| 3900 | } |
| 3901 | |
| 3902 | static void |
| 3903 | elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, |
| 3904 | asection *sec, asection *srel, |
| 3905 | bfd_vma offset, unsigned int type, |
| 3906 | long dynindx, bfd_vma addend) |
| 3907 | { |
| 3908 | Elf_Internal_Rela outrel; |
| 3909 | bfd_byte *loc; |
| 3910 | |
| 3911 | BFD_ASSERT (dynindx != -1); |
| 3912 | outrel.r_info = ELFNN_R_INFO (dynindx, type); |
| 3913 | outrel.r_addend = addend; |
| 3914 | outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); |
| 3915 | if (outrel.r_offset >= (bfd_vma) -2) |
| 3916 | { |
| 3917 | /* Run for the hills. We shouldn't be outputting a relocation |
| 3918 | for this. So do what everyone else does and output a no-op. */ |
| 3919 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); |
| 3920 | outrel.r_addend = 0; |
| 3921 | outrel.r_offset = 0; |
| 3922 | } |
| 3923 | else |
| 3924 | outrel.r_offset += sec->output_section->vma + sec->output_offset; |
| 3925 | |
| 3926 | loc = srel->contents; |
| 3927 | loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); |
| 3928 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); |
| 3929 | BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); |
| 3930 | } |
| 3931 | |
| 3932 | /* Store an entry for target address TARGET_ADDR in the linkage table |
| 3933 | and return the gp-relative address of the linkage table entry. */ |
| 3934 | |
| 3935 | static bfd_vma |
| 3936 | set_got_entry (bfd *abfd, struct bfd_link_info *info, |
| 3937 | struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 3938 | long dynindx, bfd_vma addend, bfd_vma value, |
| 3939 | unsigned int dyn_r_type) |
| 3940 | { |
| 3941 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 3942 | asection *got_sec; |
| 3943 | bfd_boolean done; |
| 3944 | bfd_vma got_offset; |
| 3945 | |
| 3946 | ia64_info = elfNN_ia64_hash_table (info); |
| 3947 | got_sec = ia64_info->got_sec; |
| 3948 | |
| 3949 | switch (dyn_r_type) |
| 3950 | { |
| 3951 | case R_IA64_TPREL64LSB: |
| 3952 | done = dyn_i->tprel_done; |
| 3953 | dyn_i->tprel_done = TRUE; |
| 3954 | got_offset = dyn_i->tprel_offset; |
| 3955 | break; |
| 3956 | case R_IA64_DTPMOD64LSB: |
| 3957 | if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) |
| 3958 | { |
| 3959 | done = dyn_i->dtpmod_done; |
| 3960 | dyn_i->dtpmod_done = TRUE; |
| 3961 | } |
| 3962 | else |
| 3963 | { |
| 3964 | done = ia64_info->self_dtpmod_done; |
| 3965 | ia64_info->self_dtpmod_done = TRUE; |
| 3966 | dynindx = 0; |
| 3967 | } |
| 3968 | got_offset = dyn_i->dtpmod_offset; |
| 3969 | break; |
| 3970 | case R_IA64_DTPREL32LSB: |
| 3971 | case R_IA64_DTPREL64LSB: |
| 3972 | done = dyn_i->dtprel_done; |
| 3973 | dyn_i->dtprel_done = TRUE; |
| 3974 | got_offset = dyn_i->dtprel_offset; |
| 3975 | break; |
| 3976 | default: |
| 3977 | done = dyn_i->got_done; |
| 3978 | dyn_i->got_done = TRUE; |
| 3979 | got_offset = dyn_i->got_offset; |
| 3980 | break; |
| 3981 | } |
| 3982 | |
| 3983 | BFD_ASSERT ((got_offset & 7) == 0); |
| 3984 | |
| 3985 | if (! done) |
| 3986 | { |
| 3987 | /* Store the target address in the linkage table entry. */ |
| 3988 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); |
| 3989 | |
| 3990 | /* Install a dynamic relocation if needed. */ |
| 3991 | if (((info->shared |
| 3992 | && (!dyn_i->h |
| 3993 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 3994 | || dyn_i->h->root.type != bfd_link_hash_undefweak) |
| 3995 | && dyn_r_type != R_IA64_DTPREL32LSB |
| 3996 | && dyn_r_type != R_IA64_DTPREL64LSB) |
| 3997 | || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) |
| 3998 | || (dynindx != -1 |
| 3999 | && (dyn_r_type == R_IA64_FPTR32LSB |
| 4000 | || dyn_r_type == R_IA64_FPTR64LSB))) |
| 4001 | && (!dyn_i->want_ltoff_fptr |
| 4002 | || !info->pie |
| 4003 | || !dyn_i->h |
| 4004 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 4005 | { |
| 4006 | if (dynindx == -1 |
| 4007 | && dyn_r_type != R_IA64_TPREL64LSB |
| 4008 | && dyn_r_type != R_IA64_DTPMOD64LSB |
| 4009 | && dyn_r_type != R_IA64_DTPREL32LSB |
| 4010 | && dyn_r_type != R_IA64_DTPREL64LSB) |
| 4011 | { |
| 4012 | dyn_r_type = R_IA64_RELNNLSB; |
| 4013 | dynindx = 0; |
| 4014 | addend = value; |
| 4015 | } |
| 4016 | |
| 4017 | if (bfd_big_endian (abfd)) |
| 4018 | { |
| 4019 | switch (dyn_r_type) |
| 4020 | { |
| 4021 | case R_IA64_REL32LSB: |
| 4022 | dyn_r_type = R_IA64_REL32MSB; |
| 4023 | break; |
| 4024 | case R_IA64_DIR32LSB: |
| 4025 | dyn_r_type = R_IA64_DIR32MSB; |
| 4026 | break; |
| 4027 | case R_IA64_FPTR32LSB: |
| 4028 | dyn_r_type = R_IA64_FPTR32MSB; |
| 4029 | break; |
| 4030 | case R_IA64_DTPREL32LSB: |
| 4031 | dyn_r_type = R_IA64_DTPREL32MSB; |
| 4032 | break; |
| 4033 | case R_IA64_REL64LSB: |
| 4034 | dyn_r_type = R_IA64_REL64MSB; |
| 4035 | break; |
| 4036 | case R_IA64_DIR64LSB: |
| 4037 | dyn_r_type = R_IA64_DIR64MSB; |
| 4038 | break; |
| 4039 | case R_IA64_FPTR64LSB: |
| 4040 | dyn_r_type = R_IA64_FPTR64MSB; |
| 4041 | break; |
| 4042 | case R_IA64_TPREL64LSB: |
| 4043 | dyn_r_type = R_IA64_TPREL64MSB; |
| 4044 | break; |
| 4045 | case R_IA64_DTPMOD64LSB: |
| 4046 | dyn_r_type = R_IA64_DTPMOD64MSB; |
| 4047 | break; |
| 4048 | case R_IA64_DTPREL64LSB: |
| 4049 | dyn_r_type = R_IA64_DTPREL64MSB; |
| 4050 | break; |
| 4051 | default: |
| 4052 | BFD_ASSERT (FALSE); |
| 4053 | break; |
| 4054 | } |
| 4055 | } |
| 4056 | |
| 4057 | elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, |
| 4058 | ia64_info->rel_got_sec, |
| 4059 | got_offset, dyn_r_type, |
| 4060 | dynindx, addend); |
| 4061 | } |
| 4062 | } |
| 4063 | |
| 4064 | /* Return the address of the linkage table entry. */ |
| 4065 | value = (got_sec->output_section->vma |
| 4066 | + got_sec->output_offset |
| 4067 | + got_offset); |
| 4068 | |
| 4069 | return value; |
| 4070 | } |
| 4071 | |
| 4072 | /* Fill in a function descriptor consisting of the function's code |
| 4073 | address and its global pointer. Return the descriptor's address. */ |
| 4074 | |
| 4075 | static bfd_vma |
| 4076 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, |
| 4077 | struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 4078 | bfd_vma value) |
| 4079 | { |
| 4080 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 4081 | asection *fptr_sec; |
| 4082 | |
| 4083 | ia64_info = elfNN_ia64_hash_table (info); |
| 4084 | fptr_sec = ia64_info->fptr_sec; |
| 4085 | |
| 4086 | if (!dyn_i->fptr_done) |
| 4087 | { |
| 4088 | dyn_i->fptr_done = 1; |
| 4089 | |
| 4090 | /* Fill in the function descriptor. */ |
| 4091 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); |
| 4092 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), |
| 4093 | fptr_sec->contents + dyn_i->fptr_offset + 8); |
| 4094 | if (ia64_info->rel_fptr_sec) |
| 4095 | { |
| 4096 | Elf_Internal_Rela outrel; |
| 4097 | bfd_byte *loc; |
| 4098 | |
| 4099 | if (bfd_little_endian (abfd)) |
| 4100 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); |
| 4101 | else |
| 4102 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); |
| 4103 | outrel.r_addend = value; |
| 4104 | outrel.r_offset = (fptr_sec->output_section->vma |
| 4105 | + fptr_sec->output_offset |
| 4106 | + dyn_i->fptr_offset); |
| 4107 | loc = ia64_info->rel_fptr_sec->contents; |
| 4108 | loc += ia64_info->rel_fptr_sec->reloc_count++ |
| 4109 | * sizeof (ElfNN_External_Rela); |
| 4110 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); |
| 4111 | } |
| 4112 | } |
| 4113 | |
| 4114 | /* Return the descriptor's address. */ |
| 4115 | value = (fptr_sec->output_section->vma |
| 4116 | + fptr_sec->output_offset |
| 4117 | + dyn_i->fptr_offset); |
| 4118 | |
| 4119 | return value; |
| 4120 | } |
| 4121 | |
| 4122 | /* Fill in a PLTOFF entry consisting of the function's code address |
| 4123 | and its global pointer. Return the descriptor's address. */ |
| 4124 | |
| 4125 | static bfd_vma |
| 4126 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, |
| 4127 | struct elfNN_ia64_dyn_sym_info *dyn_i, |
| 4128 | bfd_vma value, bfd_boolean is_plt) |
| 4129 | { |
| 4130 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 4131 | asection *pltoff_sec; |
| 4132 | |
| 4133 | ia64_info = elfNN_ia64_hash_table (info); |
| 4134 | pltoff_sec = ia64_info->pltoff_sec; |
| 4135 | |
| 4136 | /* Don't do anything if this symbol uses a real PLT entry. In |
| 4137 | that case, we'll fill this in during finish_dynamic_symbol. */ |
| 4138 | if ((! dyn_i->want_plt || is_plt) |
| 4139 | && !dyn_i->pltoff_done) |
| 4140 | { |
| 4141 | bfd_vma gp = _bfd_get_gp_value (abfd); |
| 4142 | |
| 4143 | /* Fill in the function descriptor. */ |
| 4144 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); |
| 4145 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); |
| 4146 | |
| 4147 | /* Install dynamic relocations if needed. */ |
| 4148 | if (!is_plt |
| 4149 | && info->shared |
| 4150 | && (!dyn_i->h |
| 4151 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 4152 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 4153 | { |
| 4154 | unsigned int dyn_r_type; |
| 4155 | |
| 4156 | if (bfd_big_endian (abfd)) |
| 4157 | dyn_r_type = R_IA64_RELNNMSB; |
| 4158 | else |
| 4159 | dyn_r_type = R_IA64_RELNNLSB; |
| 4160 | |
| 4161 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, |
| 4162 | ia64_info->rel_pltoff_sec, |
| 4163 | dyn_i->pltoff_offset, |
| 4164 | dyn_r_type, 0, value); |
| 4165 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, |
| 4166 | ia64_info->rel_pltoff_sec, |
| 4167 | dyn_i->pltoff_offset + ARCH_SIZE / 8, |
| 4168 | dyn_r_type, 0, gp); |
| 4169 | } |
| 4170 | |
| 4171 | dyn_i->pltoff_done = 1; |
| 4172 | } |
| 4173 | |
| 4174 | /* Return the descriptor's address. */ |
| 4175 | value = (pltoff_sec->output_section->vma |
| 4176 | + pltoff_sec->output_offset |
| 4177 | + dyn_i->pltoff_offset); |
| 4178 | |
| 4179 | return value; |
| 4180 | } |
| 4181 | |
| 4182 | /* Return the base VMA address which should be subtracted from real addresses |
| 4183 | when resolving @tprel() relocation. |
| 4184 | Main program TLS (whose template starts at PT_TLS p_vaddr) |
| 4185 | is assigned offset round(2 * size of pointer, PT_TLS p_align). */ |
| 4186 | |
| 4187 | static bfd_vma |
| 4188 | elfNN_ia64_tprel_base (struct bfd_link_info *info) |
| 4189 | { |
| 4190 | asection *tls_sec = elf_hash_table (info)->tls_sec; |
| 4191 | return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, |
| 4192 | tls_sec->alignment_power); |
| 4193 | } |
| 4194 | |
| 4195 | /* Return the base VMA address which should be subtracted from real addresses |
| 4196 | when resolving @dtprel() relocation. |
| 4197 | This is PT_TLS segment p_vaddr. */ |
| 4198 | |
| 4199 | static bfd_vma |
| 4200 | elfNN_ia64_dtprel_base (struct bfd_link_info *info) |
| 4201 | { |
| 4202 | return elf_hash_table (info)->tls_sec->vma; |
| 4203 | } |
| 4204 | |
| 4205 | /* Called through qsort to sort the .IA_64.unwind section during a |
| 4206 | non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd |
| 4207 | to the output bfd so we can do proper endianness frobbing. */ |
| 4208 | |
| 4209 | static bfd *elfNN_ia64_unwind_entry_compare_bfd; |
| 4210 | |
| 4211 | static int |
| 4212 | elfNN_ia64_unwind_entry_compare (const PTR a, const PTR b) |
| 4213 | { |
| 4214 | bfd_vma av, bv; |
| 4215 | |
| 4216 | av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); |
| 4217 | bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); |
| 4218 | |
| 4219 | return (av < bv ? -1 : av > bv ? 1 : 0); |
| 4220 | } |
| 4221 | |
| 4222 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 4223 | static bfd_boolean |
| 4224 | elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info) |
| 4225 | { |
| 4226 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; |
| 4227 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; |
| 4228 | struct elf_link_hash_entry *gp; |
| 4229 | bfd_vma gp_val; |
| 4230 | asection *os; |
| 4231 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 4232 | |
| 4233 | ia64_info = elfNN_ia64_hash_table (info); |
| 4234 | |
| 4235 | /* Find the min and max vma of all sections marked short. Also collect |
| 4236 | min and max vma of any type, for use in selecting a nice gp. */ |
| 4237 | for (os = abfd->sections; os ; os = os->next) |
| 4238 | { |
| 4239 | bfd_vma lo, hi; |
| 4240 | |
| 4241 | if ((os->flags & SEC_ALLOC) == 0) |
| 4242 | continue; |
| 4243 | |
| 4244 | lo = os->vma; |
| 4245 | hi = os->vma + (os->rawsize ? os->rawsize : os->size); |
| 4246 | if (hi < lo) |
| 4247 | hi = (bfd_vma) -1; |
| 4248 | |
| 4249 | if (min_vma > lo) |
| 4250 | min_vma = lo; |
| 4251 | if (max_vma < hi) |
| 4252 | max_vma = hi; |
| 4253 | if (os->flags & SEC_SMALL_DATA) |
| 4254 | { |
| 4255 | if (min_short_vma > lo) |
| 4256 | min_short_vma = lo; |
| 4257 | if (max_short_vma < hi) |
| 4258 | max_short_vma = hi; |
| 4259 | } |
| 4260 | } |
| 4261 | |
| 4262 | /* See if the user wants to force a value. */ |
| 4263 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 4264 | FALSE, FALSE); |
| 4265 | |
| 4266 | if (gp |
| 4267 | && (gp->root.type == bfd_link_hash_defined |
| 4268 | || gp->root.type == bfd_link_hash_defweak)) |
| 4269 | { |
| 4270 | asection *gp_sec = gp->root.u.def.section; |
| 4271 | gp_val = (gp->root.u.def.value |
| 4272 | + gp_sec->output_section->vma |
| 4273 | + gp_sec->output_offset); |
| 4274 | } |
| 4275 | else |
| 4276 | { |
| 4277 | /* Pick a sensible value. */ |
| 4278 | |
| 4279 | asection *got_sec = ia64_info->got_sec; |
| 4280 | |
| 4281 | /* Start with just the address of the .got. */ |
| 4282 | if (got_sec) |
| 4283 | gp_val = got_sec->output_section->vma; |
| 4284 | else if (max_short_vma != 0) |
| 4285 | gp_val = min_short_vma; |
| 4286 | else if (max_vma - min_vma < 0x200000) |
| 4287 | gp_val = min_vma; |
| 4288 | else |
| 4289 | gp_val = max_vma - 0x200000 + 8; |
| 4290 | |
| 4291 | /* If it is possible to address the entire image, but we |
| 4292 | don't with the choice above, adjust. */ |
| 4293 | if (max_vma - min_vma < 0x400000 |
| 4294 | && (max_vma - gp_val >= 0x200000 |
| 4295 | || gp_val - min_vma > 0x200000)) |
| 4296 | gp_val = min_vma + 0x200000; |
| 4297 | else if (max_short_vma != 0) |
| 4298 | { |
| 4299 | /* If we don't cover all the short data, adjust. */ |
| 4300 | if (max_short_vma - gp_val >= 0x200000) |
| 4301 | gp_val = min_short_vma + 0x200000; |
| 4302 | |
| 4303 | /* If we're addressing stuff past the end, adjust back. */ |
| 4304 | if (gp_val > max_vma) |
| 4305 | gp_val = max_vma - 0x200000 + 8; |
| 4306 | } |
| 4307 | } |
| 4308 | |
| 4309 | /* Validate whether all SHF_IA_64_SHORT sections are within |
| 4310 | range of the chosen GP. */ |
| 4311 | |
| 4312 | if (max_short_vma != 0) |
| 4313 | { |
| 4314 | if (max_short_vma - min_short_vma >= 0x400000) |
| 4315 | { |
| 4316 | (*_bfd_error_handler) |
| 4317 | (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), |
| 4318 | bfd_get_filename (abfd), |
| 4319 | (unsigned long) (max_short_vma - min_short_vma)); |
| 4320 | return FALSE; |
| 4321 | } |
| 4322 | else if ((gp_val > min_short_vma |
| 4323 | && gp_val - min_short_vma > 0x200000) |
| 4324 | || (gp_val < max_short_vma |
| 4325 | && max_short_vma - gp_val >= 0x200000)) |
| 4326 | { |
| 4327 | (*_bfd_error_handler) |
| 4328 | (_("%s: __gp does not cover short data segment"), |
| 4329 | bfd_get_filename (abfd)); |
| 4330 | return FALSE; |
| 4331 | } |
| 4332 | } |
| 4333 | |
| 4334 | _bfd_set_gp_value (abfd, gp_val); |
| 4335 | |
| 4336 | return TRUE; |
| 4337 | } |
| 4338 | |
| 4339 | static bfd_boolean |
| 4340 | elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) |
| 4341 | { |
| 4342 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 4343 | asection *unwind_output_sec; |
| 4344 | |
| 4345 | ia64_info = elfNN_ia64_hash_table (info); |
| 4346 | |
| 4347 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 4348 | if (!info->relocatable) |
| 4349 | { |
| 4350 | bfd_vma gp_val; |
| 4351 | struct elf_link_hash_entry *gp; |
| 4352 | |
| 4353 | /* We assume after gp is set, section size will only decrease. We |
| 4354 | need to adjust gp for it. */ |
| 4355 | _bfd_set_gp_value (abfd, 0); |
| 4356 | if (! elfNN_ia64_choose_gp (abfd, info)) |
| 4357 | return FALSE; |
| 4358 | gp_val = _bfd_get_gp_value (abfd); |
| 4359 | |
| 4360 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 4361 | FALSE, FALSE); |
| 4362 | if (gp) |
| 4363 | { |
| 4364 | gp->root.type = bfd_link_hash_defined; |
| 4365 | gp->root.u.def.value = gp_val; |
| 4366 | gp->root.u.def.section = bfd_abs_section_ptr; |
| 4367 | } |
| 4368 | } |
| 4369 | |
| 4370 | /* If we're producing a final executable, we need to sort the contents |
| 4371 | of the .IA_64.unwind section. Force this section to be relocated |
| 4372 | into memory rather than written immediately to the output file. */ |
| 4373 | unwind_output_sec = NULL; |
| 4374 | if (!info->relocatable) |
| 4375 | { |
| 4376 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); |
| 4377 | if (s) |
| 4378 | { |
| 4379 | unwind_output_sec = s->output_section; |
| 4380 | unwind_output_sec->contents |
| 4381 | = bfd_malloc (unwind_output_sec->size); |
| 4382 | if (unwind_output_sec->contents == NULL) |
| 4383 | return FALSE; |
| 4384 | } |
| 4385 | } |
| 4386 | |
| 4387 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 4388 | if (!bfd_elf_final_link (abfd, info)) |
| 4389 | return FALSE; |
| 4390 | |
| 4391 | if (unwind_output_sec) |
| 4392 | { |
| 4393 | elfNN_ia64_unwind_entry_compare_bfd = abfd; |
| 4394 | qsort (unwind_output_sec->contents, |
| 4395 | (size_t) (unwind_output_sec->size / 24), |
| 4396 | 24, |
| 4397 | elfNN_ia64_unwind_entry_compare); |
| 4398 | |
| 4399 | if (! bfd_set_section_contents (abfd, unwind_output_sec, |
| 4400 | unwind_output_sec->contents, (bfd_vma) 0, |
| 4401 | unwind_output_sec->size)) |
| 4402 | return FALSE; |
| 4403 | } |
| 4404 | |
| 4405 | return TRUE; |
| 4406 | } |
| 4407 | |
| 4408 | static bfd_boolean |
| 4409 | elfNN_ia64_relocate_section (bfd *output_bfd, |
| 4410 | struct bfd_link_info *info, |
| 4411 | bfd *input_bfd, |
| 4412 | asection *input_section, |
| 4413 | bfd_byte *contents, |
| 4414 | Elf_Internal_Rela *relocs, |
| 4415 | Elf_Internal_Sym *local_syms, |
| 4416 | asection **local_sections) |
| 4417 | { |
| 4418 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 4419 | Elf_Internal_Shdr *symtab_hdr; |
| 4420 | Elf_Internal_Rela *rel; |
| 4421 | Elf_Internal_Rela *relend; |
| 4422 | asection *srel; |
| 4423 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ |
| 4424 | bfd_vma gp_val; |
| 4425 | |
| 4426 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 4427 | ia64_info = elfNN_ia64_hash_table (info); |
| 4428 | |
| 4429 | /* Infect various flags from the input section to the output section. */ |
| 4430 | if (info->relocatable) |
| 4431 | { |
| 4432 | bfd_vma flags; |
| 4433 | |
| 4434 | flags = elf_section_data(input_section)->this_hdr.sh_flags; |
| 4435 | flags &= SHF_IA_64_NORECOV; |
| 4436 | |
| 4437 | elf_section_data(input_section->output_section) |
| 4438 | ->this_hdr.sh_flags |= flags; |
| 4439 | } |
| 4440 | |
| 4441 | gp_val = _bfd_get_gp_value (output_bfd); |
| 4442 | srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); |
| 4443 | |
| 4444 | rel = relocs; |
| 4445 | relend = relocs + input_section->reloc_count; |
| 4446 | for (; rel < relend; ++rel) |
| 4447 | { |
| 4448 | struct elf_link_hash_entry *h; |
| 4449 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 4450 | bfd_reloc_status_type r; |
| 4451 | reloc_howto_type *howto; |
| 4452 | unsigned long r_symndx; |
| 4453 | Elf_Internal_Sym *sym; |
| 4454 | unsigned int r_type; |
| 4455 | bfd_vma value; |
| 4456 | asection *sym_sec; |
| 4457 | bfd_byte *hit_addr; |
| 4458 | bfd_boolean dynamic_symbol_p; |
| 4459 | bfd_boolean undef_weak_ref; |
| 4460 | |
| 4461 | r_type = ELFNN_R_TYPE (rel->r_info); |
| 4462 | if (r_type > R_IA64_MAX_RELOC_CODE) |
| 4463 | { |
| 4464 | (*_bfd_error_handler) |
| 4465 | (_("%B: unknown relocation type %d"), |
| 4466 | input_bfd, (int) r_type); |
| 4467 | bfd_set_error (bfd_error_bad_value); |
| 4468 | ret_val = FALSE; |
| 4469 | continue; |
| 4470 | } |
| 4471 | |
| 4472 | howto = lookup_howto (r_type); |
| 4473 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| 4474 | h = NULL; |
| 4475 | sym = NULL; |
| 4476 | sym_sec = NULL; |
| 4477 | undef_weak_ref = FALSE; |
| 4478 | |
| 4479 | if (r_symndx < symtab_hdr->sh_info) |
| 4480 | { |
| 4481 | /* Reloc against local symbol. */ |
| 4482 | asection *msec; |
| 4483 | sym = local_syms + r_symndx; |
| 4484 | sym_sec = local_sections[r_symndx]; |
| 4485 | msec = sym_sec; |
| 4486 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); |
| 4487 | if (!info->relocatable |
| 4488 | && (sym_sec->flags & SEC_MERGE) != 0 |
| 4489 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| 4490 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
| 4491 | { |
| 4492 | struct elfNN_ia64_local_hash_entry *loc_h; |
| 4493 | |
| 4494 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); |
| 4495 | if (loc_h && ! loc_h->sec_merge_done) |
| 4496 | { |
| 4497 | struct elfNN_ia64_dyn_sym_info *dynent; |
| 4498 | unsigned int count; |
| 4499 | |
| 4500 | for (count = loc_h->count, dynent = loc_h->info; |
| 4501 | count != 0; |
| 4502 | count--, dynent++) |
| 4503 | { |
| 4504 | msec = sym_sec; |
| 4505 | dynent->addend = |
| 4506 | _bfd_merged_section_offset (output_bfd, &msec, |
| 4507 | elf_section_data (msec)-> |
| 4508 | sec_info, |
| 4509 | sym->st_value |
| 4510 | + dynent->addend); |
| 4511 | dynent->addend -= sym->st_value; |
| 4512 | dynent->addend += msec->output_section->vma |
| 4513 | + msec->output_offset |
| 4514 | - sym_sec->output_section->vma |
| 4515 | - sym_sec->output_offset; |
| 4516 | } |
| 4517 | |
| 4518 | /* We may have introduced duplicated entries. We need |
| 4519 | to remove them properly. */ |
| 4520 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); |
| 4521 | if (count != loc_h->count) |
| 4522 | { |
| 4523 | loc_h->count = count; |
| 4524 | loc_h->sorted_count = count; |
| 4525 | } |
| 4526 | |
| 4527 | loc_h->sec_merge_done = 1; |
| 4528 | } |
| 4529 | } |
| 4530 | } |
| 4531 | else |
| 4532 | { |
| 4533 | bfd_boolean unresolved_reloc; |
| 4534 | bfd_boolean warned; |
| 4535 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 4536 | |
| 4537 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 4538 | r_symndx, symtab_hdr, sym_hashes, |
| 4539 | h, sym_sec, value, |
| 4540 | unresolved_reloc, warned); |
| 4541 | |
| 4542 | if (h->root.type == bfd_link_hash_undefweak) |
| 4543 | undef_weak_ref = TRUE; |
| 4544 | else if (warned) |
| 4545 | continue; |
| 4546 | } |
| 4547 | |
| 4548 | /* For relocs against symbols from removed linkonce sections, |
| 4549 | or sections discarded by a linker script, we just want the |
| 4550 | section contents zeroed. Avoid any special processing. */ |
| 4551 | if (sym_sec != NULL && elf_discarded_section (sym_sec)) |
| 4552 | { |
| 4553 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 4554 | rel->r_info = 0; |
| 4555 | rel->r_addend = 0; |
| 4556 | continue; |
| 4557 | } |
| 4558 | |
| 4559 | if (info->relocatable) |
| 4560 | continue; |
| 4561 | |
| 4562 | hit_addr = contents + rel->r_offset; |
| 4563 | value += rel->r_addend; |
| 4564 | dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); |
| 4565 | |
| 4566 | switch (r_type) |
| 4567 | { |
| 4568 | case R_IA64_NONE: |
| 4569 | case R_IA64_LDXMOV: |
| 4570 | continue; |
| 4571 | |
| 4572 | case R_IA64_IMM14: |
| 4573 | case R_IA64_IMM22: |
| 4574 | case R_IA64_IMM64: |
| 4575 | case R_IA64_DIR32MSB: |
| 4576 | case R_IA64_DIR32LSB: |
| 4577 | case R_IA64_DIR64MSB: |
| 4578 | case R_IA64_DIR64LSB: |
| 4579 | /* Install a dynamic relocation for this reloc. */ |
| 4580 | if ((dynamic_symbol_p || info->shared) |
| 4581 | && r_symndx != 0 |
| 4582 | && (input_section->flags & SEC_ALLOC) != 0) |
| 4583 | { |
| 4584 | unsigned int dyn_r_type; |
| 4585 | long dynindx; |
| 4586 | bfd_vma addend; |
| 4587 | |
| 4588 | BFD_ASSERT (srel != NULL); |
| 4589 | |
| 4590 | switch (r_type) |
| 4591 | { |
| 4592 | case R_IA64_IMM14: |
| 4593 | case R_IA64_IMM22: |
| 4594 | case R_IA64_IMM64: |
| 4595 | /* ??? People shouldn't be doing non-pic code in |
| 4596 | shared libraries nor dynamic executables. */ |
| 4597 | (*_bfd_error_handler) |
| 4598 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), |
| 4599 | input_bfd, |
| 4600 | h ? h->root.root.string |
| 4601 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 4602 | sym_sec)); |
| 4603 | ret_val = FALSE; |
| 4604 | continue; |
| 4605 | |
| 4606 | default: |
| 4607 | break; |
| 4608 | } |
| 4609 | |
| 4610 | /* If we don't need dynamic symbol lookup, find a |
| 4611 | matching RELATIVE relocation. */ |
| 4612 | dyn_r_type = r_type; |
| 4613 | if (dynamic_symbol_p) |
| 4614 | { |
| 4615 | dynindx = h->dynindx; |
| 4616 | addend = rel->r_addend; |
| 4617 | value = 0; |
| 4618 | } |
| 4619 | else |
| 4620 | { |
| 4621 | switch (r_type) |
| 4622 | { |
| 4623 | case R_IA64_DIR32MSB: |
| 4624 | dyn_r_type = R_IA64_REL32MSB; |
| 4625 | break; |
| 4626 | case R_IA64_DIR32LSB: |
| 4627 | dyn_r_type = R_IA64_REL32LSB; |
| 4628 | break; |
| 4629 | case R_IA64_DIR64MSB: |
| 4630 | dyn_r_type = R_IA64_REL64MSB; |
| 4631 | break; |
| 4632 | case R_IA64_DIR64LSB: |
| 4633 | dyn_r_type = R_IA64_REL64LSB; |
| 4634 | break; |
| 4635 | |
| 4636 | default: |
| 4637 | break; |
| 4638 | } |
| 4639 | dynindx = 0; |
| 4640 | addend = value; |
| 4641 | } |
| 4642 | |
| 4643 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, |
| 4644 | srel, rel->r_offset, dyn_r_type, |
| 4645 | dynindx, addend); |
| 4646 | } |
| 4647 | /* Fall through. */ |
| 4648 | |
| 4649 | case R_IA64_LTV32MSB: |
| 4650 | case R_IA64_LTV32LSB: |
| 4651 | case R_IA64_LTV64MSB: |
| 4652 | case R_IA64_LTV64LSB: |
| 4653 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4654 | break; |
| 4655 | |
| 4656 | case R_IA64_GPREL22: |
| 4657 | case R_IA64_GPREL64I: |
| 4658 | case R_IA64_GPREL32MSB: |
| 4659 | case R_IA64_GPREL32LSB: |
| 4660 | case R_IA64_GPREL64MSB: |
| 4661 | case R_IA64_GPREL64LSB: |
| 4662 | if (dynamic_symbol_p) |
| 4663 | { |
| 4664 | (*_bfd_error_handler) |
| 4665 | (_("%B: @gprel relocation against dynamic symbol %s"), |
| 4666 | input_bfd, |
| 4667 | h ? h->root.root.string |
| 4668 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 4669 | sym_sec)); |
| 4670 | ret_val = FALSE; |
| 4671 | continue; |
| 4672 | } |
| 4673 | value -= gp_val; |
| 4674 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4675 | break; |
| 4676 | |
| 4677 | case R_IA64_LTOFF22: |
| 4678 | case R_IA64_LTOFF22X: |
| 4679 | case R_IA64_LTOFF64I: |
| 4680 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 4681 | value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), |
| 4682 | rel->r_addend, value, R_IA64_DIRNNLSB); |
| 4683 | value -= gp_val; |
| 4684 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4685 | break; |
| 4686 | |
| 4687 | case R_IA64_PLTOFF22: |
| 4688 | case R_IA64_PLTOFF64I: |
| 4689 | case R_IA64_PLTOFF64MSB: |
| 4690 | case R_IA64_PLTOFF64LSB: |
| 4691 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 4692 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); |
| 4693 | value -= gp_val; |
| 4694 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4695 | break; |
| 4696 | |
| 4697 | case R_IA64_FPTR64I: |
| 4698 | case R_IA64_FPTR32MSB: |
| 4699 | case R_IA64_FPTR32LSB: |
| 4700 | case R_IA64_FPTR64MSB: |
| 4701 | case R_IA64_FPTR64LSB: |
| 4702 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 4703 | if (dyn_i->want_fptr) |
| 4704 | { |
| 4705 | if (!undef_weak_ref) |
| 4706 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 4707 | } |
| 4708 | if (!dyn_i->want_fptr || info->pie) |
| 4709 | { |
| 4710 | long dynindx; |
| 4711 | unsigned int dyn_r_type = r_type; |
| 4712 | bfd_vma addend = rel->r_addend; |
| 4713 | |
| 4714 | /* Otherwise, we expect the dynamic linker to create |
| 4715 | the entry. */ |
| 4716 | |
| 4717 | if (dyn_i->want_fptr) |
| 4718 | { |
| 4719 | if (r_type == R_IA64_FPTR64I) |
| 4720 | { |
| 4721 | /* We can't represent this without a dynamic symbol. |
| 4722 | Adjust the relocation to be against an output |
| 4723 | section symbol, which are always present in the |
| 4724 | dynamic symbol table. */ |
| 4725 | /* ??? People shouldn't be doing non-pic code in |
| 4726 | shared libraries. Hork. */ |
| 4727 | (*_bfd_error_handler) |
| 4728 | (_("%B: linking non-pic code in a position independent executable"), |
| 4729 | input_bfd); |
| 4730 | ret_val = FALSE; |
| 4731 | continue; |
| 4732 | } |
| 4733 | dynindx = 0; |
| 4734 | addend = value; |
| 4735 | dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; |
| 4736 | } |
| 4737 | else if (h) |
| 4738 | { |
| 4739 | if (h->dynindx != -1) |
| 4740 | dynindx = h->dynindx; |
| 4741 | else |
| 4742 | dynindx = (_bfd_elf_link_lookup_local_dynindx |
| 4743 | (info, h->root.u.def.section->owner, |
| 4744 | global_sym_index (h))); |
| 4745 | value = 0; |
| 4746 | } |
| 4747 | else |
| 4748 | { |
| 4749 | dynindx = (_bfd_elf_link_lookup_local_dynindx |
| 4750 | (info, input_bfd, (long) r_symndx)); |
| 4751 | value = 0; |
| 4752 | } |
| 4753 | |
| 4754 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, |
| 4755 | srel, rel->r_offset, dyn_r_type, |
| 4756 | dynindx, addend); |
| 4757 | } |
| 4758 | |
| 4759 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4760 | break; |
| 4761 | |
| 4762 | case R_IA64_LTOFF_FPTR22: |
| 4763 | case R_IA64_LTOFF_FPTR64I: |
| 4764 | case R_IA64_LTOFF_FPTR32MSB: |
| 4765 | case R_IA64_LTOFF_FPTR32LSB: |
| 4766 | case R_IA64_LTOFF_FPTR64MSB: |
| 4767 | case R_IA64_LTOFF_FPTR64LSB: |
| 4768 | { |
| 4769 | long dynindx; |
| 4770 | |
| 4771 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 4772 | if (dyn_i->want_fptr) |
| 4773 | { |
| 4774 | BFD_ASSERT (h == NULL || h->dynindx == -1); |
| 4775 | if (!undef_weak_ref) |
| 4776 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 4777 | dynindx = -1; |
| 4778 | } |
| 4779 | else |
| 4780 | { |
| 4781 | /* Otherwise, we expect the dynamic linker to create |
| 4782 | the entry. */ |
| 4783 | if (h) |
| 4784 | { |
| 4785 | if (h->dynindx != -1) |
| 4786 | dynindx = h->dynindx; |
| 4787 | else |
| 4788 | dynindx = (_bfd_elf_link_lookup_local_dynindx |
| 4789 | (info, h->root.u.def.section->owner, |
| 4790 | global_sym_index (h))); |
| 4791 | } |
| 4792 | else |
| 4793 | dynindx = (_bfd_elf_link_lookup_local_dynindx |
| 4794 | (info, input_bfd, (long) r_symndx)); |
| 4795 | value = 0; |
| 4796 | } |
| 4797 | |
| 4798 | value = set_got_entry (output_bfd, info, dyn_i, dynindx, |
| 4799 | rel->r_addend, value, R_IA64_FPTRNNLSB); |
| 4800 | value -= gp_val; |
| 4801 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4802 | } |
| 4803 | break; |
| 4804 | |
| 4805 | case R_IA64_PCREL32MSB: |
| 4806 | case R_IA64_PCREL32LSB: |
| 4807 | case R_IA64_PCREL64MSB: |
| 4808 | case R_IA64_PCREL64LSB: |
| 4809 | /* Install a dynamic relocation for this reloc. */ |
| 4810 | if (dynamic_symbol_p && r_symndx != 0) |
| 4811 | { |
| 4812 | BFD_ASSERT (srel != NULL); |
| 4813 | |
| 4814 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, |
| 4815 | srel, rel->r_offset, r_type, |
| 4816 | h->dynindx, rel->r_addend); |
| 4817 | } |
| 4818 | goto finish_pcrel; |
| 4819 | |
| 4820 | case R_IA64_PCREL21B: |
| 4821 | case R_IA64_PCREL60B: |
| 4822 | /* We should have created a PLT entry for any dynamic symbol. */ |
| 4823 | dyn_i = NULL; |
| 4824 | if (h) |
| 4825 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 4826 | |
| 4827 | if (dyn_i && dyn_i->want_plt2) |
| 4828 | { |
| 4829 | /* Should have caught this earlier. */ |
| 4830 | BFD_ASSERT (rel->r_addend == 0); |
| 4831 | |
| 4832 | value = (ia64_info->plt_sec->output_section->vma |
| 4833 | + ia64_info->plt_sec->output_offset |
| 4834 | + dyn_i->plt2_offset); |
| 4835 | } |
| 4836 | else |
| 4837 | { |
| 4838 | /* Since there's no PLT entry, Validate that this is |
| 4839 | locally defined. */ |
| 4840 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); |
| 4841 | |
| 4842 | /* If the symbol is undef_weak, we shouldn't be trying |
| 4843 | to call it. There's every chance that we'd wind up |
| 4844 | with an out-of-range fixup here. Don't bother setting |
| 4845 | any value at all. */ |
| 4846 | if (undef_weak_ref) |
| 4847 | continue; |
| 4848 | } |
| 4849 | goto finish_pcrel; |
| 4850 | |
| 4851 | case R_IA64_PCREL21BI: |
| 4852 | case R_IA64_PCREL21F: |
| 4853 | case R_IA64_PCREL21M: |
| 4854 | case R_IA64_PCREL22: |
| 4855 | case R_IA64_PCREL64I: |
| 4856 | /* The PCREL21BI reloc is specifically not intended for use with |
| 4857 | dynamic relocs. PCREL21F and PCREL21M are used for speculation |
| 4858 | fixup code, and thus probably ought not be dynamic. The |
| 4859 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ |
| 4860 | if (dynamic_symbol_p) |
| 4861 | { |
| 4862 | const char *msg; |
| 4863 | |
| 4864 | if (r_type == R_IA64_PCREL21BI) |
| 4865 | msg = _("%B: @internal branch to dynamic symbol %s"); |
| 4866 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) |
| 4867 | msg = _("%B: speculation fixup to dynamic symbol %s"); |
| 4868 | else |
| 4869 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); |
| 4870 | (*_bfd_error_handler) (msg, input_bfd, |
| 4871 | h ? h->root.root.string |
| 4872 | : bfd_elf_sym_name (input_bfd, |
| 4873 | symtab_hdr, |
| 4874 | sym, |
| 4875 | sym_sec)); |
| 4876 | ret_val = FALSE; |
| 4877 | continue; |
| 4878 | } |
| 4879 | goto finish_pcrel; |
| 4880 | |
| 4881 | finish_pcrel: |
| 4882 | /* Make pc-relative. */ |
| 4883 | value -= (input_section->output_section->vma |
| 4884 | + input_section->output_offset |
| 4885 | + rel->r_offset) & ~ (bfd_vma) 0x3; |
| 4886 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4887 | break; |
| 4888 | |
| 4889 | case R_IA64_SEGREL32MSB: |
| 4890 | case R_IA64_SEGREL32LSB: |
| 4891 | case R_IA64_SEGREL64MSB: |
| 4892 | case R_IA64_SEGREL64LSB: |
| 4893 | { |
| 4894 | /* Find the segment that contains the output_section. */ |
| 4895 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section |
| 4896 | (output_bfd, input_section->output_section); |
| 4897 | |
| 4898 | if (p == NULL) |
| 4899 | { |
| 4900 | r = bfd_reloc_notsupported; |
| 4901 | } |
| 4902 | else |
| 4903 | { |
| 4904 | /* The VMA of the segment is the vaddr of the associated |
| 4905 | program header. */ |
| 4906 | if (value > p->p_vaddr) |
| 4907 | value -= p->p_vaddr; |
| 4908 | else |
| 4909 | value = 0; |
| 4910 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4911 | } |
| 4912 | break; |
| 4913 | } |
| 4914 | |
| 4915 | case R_IA64_SECREL32MSB: |
| 4916 | case R_IA64_SECREL32LSB: |
| 4917 | case R_IA64_SECREL64MSB: |
| 4918 | case R_IA64_SECREL64LSB: |
| 4919 | /* Make output-section relative to section where the symbol |
| 4920 | is defined. PR 475 */ |
| 4921 | if (sym_sec) |
| 4922 | value -= sym_sec->output_section->vma; |
| 4923 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4924 | break; |
| 4925 | |
| 4926 | case R_IA64_IPLTMSB: |
| 4927 | case R_IA64_IPLTLSB: |
| 4928 | /* Install a dynamic relocation for this reloc. */ |
| 4929 | if ((dynamic_symbol_p || info->shared) |
| 4930 | && (input_section->flags & SEC_ALLOC) != 0) |
| 4931 | { |
| 4932 | BFD_ASSERT (srel != NULL); |
| 4933 | |
| 4934 | /* If we don't need dynamic symbol lookup, install two |
| 4935 | RELATIVE relocations. */ |
| 4936 | if (!dynamic_symbol_p) |
| 4937 | { |
| 4938 | unsigned int dyn_r_type; |
| 4939 | |
| 4940 | if (r_type == R_IA64_IPLTMSB) |
| 4941 | dyn_r_type = R_IA64_REL64MSB; |
| 4942 | else |
| 4943 | dyn_r_type = R_IA64_REL64LSB; |
| 4944 | |
| 4945 | elfNN_ia64_install_dyn_reloc (output_bfd, info, |
| 4946 | input_section, |
| 4947 | srel, rel->r_offset, |
| 4948 | dyn_r_type, 0, value); |
| 4949 | elfNN_ia64_install_dyn_reloc (output_bfd, info, |
| 4950 | input_section, |
| 4951 | srel, rel->r_offset + 8, |
| 4952 | dyn_r_type, 0, gp_val); |
| 4953 | } |
| 4954 | else |
| 4955 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, |
| 4956 | srel, rel->r_offset, r_type, |
| 4957 | h->dynindx, rel->r_addend); |
| 4958 | } |
| 4959 | |
| 4960 | if (r_type == R_IA64_IPLTMSB) |
| 4961 | r_type = R_IA64_DIR64MSB; |
| 4962 | else |
| 4963 | r_type = R_IA64_DIR64LSB; |
| 4964 | elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4965 | r = elfNN_ia64_install_value (hit_addr + 8, gp_val, r_type); |
| 4966 | break; |
| 4967 | |
| 4968 | case R_IA64_TPREL14: |
| 4969 | case R_IA64_TPREL22: |
| 4970 | case R_IA64_TPREL64I: |
| 4971 | if (elf_hash_table (info)->tls_sec == NULL) |
| 4972 | goto missing_tls_sec; |
| 4973 | value -= elfNN_ia64_tprel_base (info); |
| 4974 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4975 | break; |
| 4976 | |
| 4977 | case R_IA64_DTPREL14: |
| 4978 | case R_IA64_DTPREL22: |
| 4979 | case R_IA64_DTPREL64I: |
| 4980 | case R_IA64_DTPREL32LSB: |
| 4981 | case R_IA64_DTPREL32MSB: |
| 4982 | case R_IA64_DTPREL64LSB: |
| 4983 | case R_IA64_DTPREL64MSB: |
| 4984 | if (elf_hash_table (info)->tls_sec == NULL) |
| 4985 | goto missing_tls_sec; |
| 4986 | value -= elfNN_ia64_dtprel_base (info); |
| 4987 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 4988 | break; |
| 4989 | |
| 4990 | case R_IA64_LTOFF_TPREL22: |
| 4991 | case R_IA64_LTOFF_DTPMOD22: |
| 4992 | case R_IA64_LTOFF_DTPREL22: |
| 4993 | { |
| 4994 | int got_r_type; |
| 4995 | long dynindx = h ? h->dynindx : -1; |
| 4996 | bfd_vma r_addend = rel->r_addend; |
| 4997 | |
| 4998 | switch (r_type) |
| 4999 | { |
| 5000 | default: |
| 5001 | case R_IA64_LTOFF_TPREL22: |
| 5002 | if (!dynamic_symbol_p) |
| 5003 | { |
| 5004 | if (elf_hash_table (info)->tls_sec == NULL) |
| 5005 | goto missing_tls_sec; |
| 5006 | if (!info->shared) |
| 5007 | value -= elfNN_ia64_tprel_base (info); |
| 5008 | else |
| 5009 | { |
| 5010 | r_addend += value - elfNN_ia64_dtprel_base (info); |
| 5011 | dynindx = 0; |
| 5012 | } |
| 5013 | } |
| 5014 | got_r_type = R_IA64_TPREL64LSB; |
| 5015 | break; |
| 5016 | case R_IA64_LTOFF_DTPMOD22: |
| 5017 | if (!dynamic_symbol_p && !info->shared) |
| 5018 | value = 1; |
| 5019 | got_r_type = R_IA64_DTPMOD64LSB; |
| 5020 | break; |
| 5021 | case R_IA64_LTOFF_DTPREL22: |
| 5022 | if (!dynamic_symbol_p) |
| 5023 | { |
| 5024 | if (elf_hash_table (info)->tls_sec == NULL) |
| 5025 | goto missing_tls_sec; |
| 5026 | value -= elfNN_ia64_dtprel_base (info); |
| 5027 | } |
| 5028 | got_r_type = R_IA64_DTPRELNNLSB; |
| 5029 | break; |
| 5030 | } |
| 5031 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 5032 | value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, |
| 5033 | value, got_r_type); |
| 5034 | value -= gp_val; |
| 5035 | r = elfNN_ia64_install_value (hit_addr, value, r_type); |
| 5036 | } |
| 5037 | break; |
| 5038 | |
| 5039 | default: |
| 5040 | r = bfd_reloc_notsupported; |
| 5041 | break; |
| 5042 | } |
| 5043 | |
| 5044 | switch (r) |
| 5045 | { |
| 5046 | case bfd_reloc_ok: |
| 5047 | break; |
| 5048 | |
| 5049 | case bfd_reloc_undefined: |
| 5050 | /* This can happen for global table relative relocs if |
| 5051 | __gp is undefined. This is a panic situation so we |
| 5052 | don't try to continue. */ |
| 5053 | (*info->callbacks->undefined_symbol) |
| 5054 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); |
| 5055 | return FALSE; |
| 5056 | |
| 5057 | case bfd_reloc_notsupported: |
| 5058 | { |
| 5059 | const char *name; |
| 5060 | |
| 5061 | if (h) |
| 5062 | name = h->root.root.string; |
| 5063 | else |
| 5064 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 5065 | sym_sec); |
| 5066 | if (!(*info->callbacks->warning) (info, _("unsupported reloc"), |
| 5067 | name, input_bfd, |
| 5068 | input_section, rel->r_offset)) |
| 5069 | return FALSE; |
| 5070 | ret_val = FALSE; |
| 5071 | } |
| 5072 | break; |
| 5073 | |
| 5074 | case bfd_reloc_dangerous: |
| 5075 | case bfd_reloc_outofrange: |
| 5076 | case bfd_reloc_overflow: |
| 5077 | default: |
| 5078 | missing_tls_sec: |
| 5079 | { |
| 5080 | const char *name; |
| 5081 | |
| 5082 | if (h) |
| 5083 | name = h->root.root.string; |
| 5084 | else |
| 5085 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 5086 | sym_sec); |
| 5087 | |
| 5088 | switch (r_type) |
| 5089 | { |
| 5090 | case R_IA64_TPREL14: |
| 5091 | case R_IA64_TPREL22: |
| 5092 | case R_IA64_TPREL64I: |
| 5093 | case R_IA64_DTPREL14: |
| 5094 | case R_IA64_DTPREL22: |
| 5095 | case R_IA64_DTPREL64I: |
| 5096 | case R_IA64_DTPREL32LSB: |
| 5097 | case R_IA64_DTPREL32MSB: |
| 5098 | case R_IA64_DTPREL64LSB: |
| 5099 | case R_IA64_DTPREL64MSB: |
| 5100 | case R_IA64_LTOFF_TPREL22: |
| 5101 | case R_IA64_LTOFF_DTPMOD22: |
| 5102 | case R_IA64_LTOFF_DTPREL22: |
| 5103 | (*_bfd_error_handler) |
| 5104 | (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), |
| 5105 | input_bfd, input_section, howto->name, name, |
| 5106 | rel->r_offset); |
| 5107 | break; |
| 5108 | |
| 5109 | case R_IA64_PCREL21B: |
| 5110 | case R_IA64_PCREL21BI: |
| 5111 | case R_IA64_PCREL21M: |
| 5112 | case R_IA64_PCREL21F: |
| 5113 | if (is_elf_hash_table (info->hash)) |
| 5114 | { |
| 5115 | /* Relaxtion is always performed for ELF output. |
| 5116 | Overflow failures for those relocations mean |
| 5117 | that the section is too big to relax. */ |
| 5118 | (*_bfd_error_handler) |
| 5119 | (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), |
| 5120 | input_bfd, input_section, howto->name, name, |
| 5121 | rel->r_offset, input_section->size); |
| 5122 | break; |
| 5123 | } |
| 5124 | default: |
| 5125 | if (!(*info->callbacks->reloc_overflow) (info, |
| 5126 | &h->root, |
| 5127 | name, |
| 5128 | howto->name, |
| 5129 | (bfd_vma) 0, |
| 5130 | input_bfd, |
| 5131 | input_section, |
| 5132 | rel->r_offset)) |
| 5133 | return FALSE; |
| 5134 | break; |
| 5135 | } |
| 5136 | |
| 5137 | ret_val = FALSE; |
| 5138 | } |
| 5139 | break; |
| 5140 | } |
| 5141 | } |
| 5142 | |
| 5143 | return ret_val; |
| 5144 | } |
| 5145 | |
| 5146 | static bfd_boolean |
| 5147 | elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, |
| 5148 | struct bfd_link_info *info, |
| 5149 | struct elf_link_hash_entry *h, |
| 5150 | Elf_Internal_Sym *sym) |
| 5151 | { |
| 5152 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 5153 | struct elfNN_ia64_dyn_sym_info *dyn_i; |
| 5154 | |
| 5155 | ia64_info = elfNN_ia64_hash_table (info); |
| 5156 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 5157 | |
| 5158 | /* Fill in the PLT data, if required. */ |
| 5159 | if (dyn_i && dyn_i->want_plt) |
| 5160 | { |
| 5161 | Elf_Internal_Rela outrel; |
| 5162 | bfd_byte *loc; |
| 5163 | asection *plt_sec; |
| 5164 | bfd_vma plt_addr, pltoff_addr, gp_val, index; |
| 5165 | |
| 5166 | gp_val = _bfd_get_gp_value (output_bfd); |
| 5167 | |
| 5168 | /* Initialize the minimal PLT entry. */ |
| 5169 | |
| 5170 | index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; |
| 5171 | plt_sec = ia64_info->plt_sec; |
| 5172 | loc = plt_sec->contents + dyn_i->plt_offset; |
| 5173 | |
| 5174 | memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); |
| 5175 | elfNN_ia64_install_value (loc, index, R_IA64_IMM22); |
| 5176 | elfNN_ia64_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); |
| 5177 | |
| 5178 | plt_addr = (plt_sec->output_section->vma |
| 5179 | + plt_sec->output_offset |
| 5180 | + dyn_i->plt_offset); |
| 5181 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); |
| 5182 | |
| 5183 | /* Initialize the FULL PLT entry, if needed. */ |
| 5184 | if (dyn_i->want_plt2) |
| 5185 | { |
| 5186 | loc = plt_sec->contents + dyn_i->plt2_offset; |
| 5187 | |
| 5188 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); |
| 5189 | elfNN_ia64_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); |
| 5190 | |
| 5191 | /* Mark the symbol as undefined, rather than as defined in the |
| 5192 | plt section. Leave the value alone. */ |
| 5193 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the |
| 5194 | first place. But perhaps elflink.c did some for us. */ |
| 5195 | if (!h->def_regular) |
| 5196 | sym->st_shndx = SHN_UNDEF; |
| 5197 | } |
| 5198 | |
| 5199 | /* Create the dynamic relocation. */ |
| 5200 | outrel.r_offset = pltoff_addr; |
| 5201 | if (bfd_little_endian (output_bfd)) |
| 5202 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); |
| 5203 | else |
| 5204 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); |
| 5205 | outrel.r_addend = 0; |
| 5206 | |
| 5207 | /* This is fun. In the .IA_64.pltoff section, we've got entries |
| 5208 | that correspond both to real PLT entries, and those that |
| 5209 | happened to resolve to local symbols but need to be created |
| 5210 | to satisfy @pltoff relocations. The .rela.IA_64.pltoff |
| 5211 | relocations for the real PLT should come at the end of the |
| 5212 | section, so that they can be indexed by plt entry at runtime. |
| 5213 | |
| 5214 | We emitted all of the relocations for the non-PLT @pltoff |
| 5215 | entries during relocate_section. So we can consider the |
| 5216 | existing sec->reloc_count to be the base of the array of |
| 5217 | PLT relocations. */ |
| 5218 | |
| 5219 | loc = ia64_info->rel_pltoff_sec->contents; |
| 5220 | loc += ((ia64_info->rel_pltoff_sec->reloc_count + index) |
| 5221 | * sizeof (ElfNN_External_Rela)); |
| 5222 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
| 5223 | } |
| 5224 | |
| 5225 | /* Mark some specially defined symbols as absolute. */ |
| 5226 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 5227 | || h == ia64_info->root.hgot |
| 5228 | || h == ia64_info->root.hplt) |
| 5229 | sym->st_shndx = SHN_ABS; |
| 5230 | |
| 5231 | return TRUE; |
| 5232 | } |
| 5233 | |
| 5234 | static bfd_boolean |
| 5235 | elfNN_ia64_finish_dynamic_sections (bfd *abfd, |
| 5236 | struct bfd_link_info *info) |
| 5237 | { |
| 5238 | struct elfNN_ia64_link_hash_table *ia64_info; |
| 5239 | bfd *dynobj; |
| 5240 | |
| 5241 | ia64_info = elfNN_ia64_hash_table (info); |
| 5242 | dynobj = ia64_info->root.dynobj; |
| 5243 | |
| 5244 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5245 | { |
| 5246 | ElfNN_External_Dyn *dyncon, *dynconend; |
| 5247 | asection *sdyn, *sgotplt; |
| 5248 | bfd_vma gp_val; |
| 5249 | |
| 5250 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 5251 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 5252 | BFD_ASSERT (sdyn != NULL); |
| 5253 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
| 5254 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5255 | |
| 5256 | gp_val = _bfd_get_gp_value (abfd); |
| 5257 | |
| 5258 | for (; dyncon < dynconend; dyncon++) |
| 5259 | { |
| 5260 | Elf_Internal_Dyn dyn; |
| 5261 | |
| 5262 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
| 5263 | |
| 5264 | switch (dyn.d_tag) |
| 5265 | { |
| 5266 | case DT_PLTGOT: |
| 5267 | dyn.d_un.d_ptr = gp_val; |
| 5268 | break; |
| 5269 | |
| 5270 | case DT_PLTRELSZ: |
| 5271 | dyn.d_un.d_val = (ia64_info->minplt_entries |
| 5272 | * sizeof (ElfNN_External_Rela)); |
| 5273 | break; |
| 5274 | |
| 5275 | case DT_JMPREL: |
| 5276 | /* See the comment above in finish_dynamic_symbol. */ |
| 5277 | dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma |
| 5278 | + ia64_info->rel_pltoff_sec->output_offset |
| 5279 | + (ia64_info->rel_pltoff_sec->reloc_count |
| 5280 | * sizeof (ElfNN_External_Rela))); |
| 5281 | break; |
| 5282 | |
| 5283 | case DT_IA_64_PLT_RESERVE: |
| 5284 | dyn.d_un.d_ptr = (sgotplt->output_section->vma |
| 5285 | + sgotplt->output_offset); |
| 5286 | break; |
| 5287 | |
| 5288 | case DT_RELASZ: |
| 5289 | /* Do not have RELASZ include JMPREL. This makes things |
| 5290 | easier on ld.so. This is not what the rest of BFD set up. */ |
| 5291 | dyn.d_un.d_val -= (ia64_info->minplt_entries |
| 5292 | * sizeof (ElfNN_External_Rela)); |
| 5293 | break; |
| 5294 | } |
| 5295 | |
| 5296 | bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); |
| 5297 | } |
| 5298 | |
| 5299 | /* Initialize the PLT0 entry. */ |
| 5300 | if (ia64_info->plt_sec) |
| 5301 | { |
| 5302 | bfd_byte *loc = ia64_info->plt_sec->contents; |
| 5303 | bfd_vma pltres; |
| 5304 | |
| 5305 | memcpy (loc, plt_header, PLT_HEADER_SIZE); |
| 5306 | |
| 5307 | pltres = (sgotplt->output_section->vma |
| 5308 | + sgotplt->output_offset |
| 5309 | - gp_val); |
| 5310 | |
| 5311 | elfNN_ia64_install_value (loc+1, pltres, R_IA64_GPREL22); |
| 5312 | } |
| 5313 | } |
| 5314 | |
| 5315 | return TRUE; |
| 5316 | } |
| 5317 | \f |
| 5318 | /* ELF file flag handling: */ |
| 5319 | |
| 5320 | /* Function to keep IA-64 specific file flags. */ |
| 5321 | static bfd_boolean |
| 5322 | elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) |
| 5323 | { |
| 5324 | BFD_ASSERT (!elf_flags_init (abfd) |
| 5325 | || elf_elfheader (abfd)->e_flags == flags); |
| 5326 | |
| 5327 | elf_elfheader (abfd)->e_flags = flags; |
| 5328 | elf_flags_init (abfd) = TRUE; |
| 5329 | return TRUE; |
| 5330 | } |
| 5331 | |
| 5332 | /* Merge backend specific data from an object file to the output |
| 5333 | object file when linking. */ |
| 5334 | static bfd_boolean |
| 5335 | elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 5336 | { |
| 5337 | flagword out_flags; |
| 5338 | flagword in_flags; |
| 5339 | bfd_boolean ok = TRUE; |
| 5340 | |
| 5341 | /* Don't even pretend to support mixed-format linking. */ |
| 5342 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 5343 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 5344 | return FALSE; |
| 5345 | |
| 5346 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 5347 | out_flags = elf_elfheader (obfd)->e_flags; |
| 5348 | |
| 5349 | if (! elf_flags_init (obfd)) |
| 5350 | { |
| 5351 | elf_flags_init (obfd) = TRUE; |
| 5352 | elf_elfheader (obfd)->e_flags = in_flags; |
| 5353 | |
| 5354 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 5355 | && bfd_get_arch_info (obfd)->the_default) |
| 5356 | { |
| 5357 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| 5358 | bfd_get_mach (ibfd)); |
| 5359 | } |
| 5360 | |
| 5361 | return TRUE; |
| 5362 | } |
| 5363 | |
| 5364 | /* Check flag compatibility. */ |
| 5365 | if (in_flags == out_flags) |
| 5366 | return TRUE; |
| 5367 | |
| 5368 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ |
| 5369 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) |
| 5370 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; |
| 5371 | |
| 5372 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) |
| 5373 | { |
| 5374 | (*_bfd_error_handler) |
| 5375 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), |
| 5376 | ibfd); |
| 5377 | |
| 5378 | bfd_set_error (bfd_error_bad_value); |
| 5379 | ok = FALSE; |
| 5380 | } |
| 5381 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) |
| 5382 | { |
| 5383 | (*_bfd_error_handler) |
| 5384 | (_("%B: linking big-endian files with little-endian files"), |
| 5385 | ibfd); |
| 5386 | |
| 5387 | bfd_set_error (bfd_error_bad_value); |
| 5388 | ok = FALSE; |
| 5389 | } |
| 5390 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) |
| 5391 | { |
| 5392 | (*_bfd_error_handler) |
| 5393 | (_("%B: linking 64-bit files with 32-bit files"), |
| 5394 | ibfd); |
| 5395 | |
| 5396 | bfd_set_error (bfd_error_bad_value); |
| 5397 | ok = FALSE; |
| 5398 | } |
| 5399 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) |
| 5400 | { |
| 5401 | (*_bfd_error_handler) |
| 5402 | (_("%B: linking constant-gp files with non-constant-gp files"), |
| 5403 | ibfd); |
| 5404 | |
| 5405 | bfd_set_error (bfd_error_bad_value); |
| 5406 | ok = FALSE; |
| 5407 | } |
| 5408 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) |
| 5409 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) |
| 5410 | { |
| 5411 | (*_bfd_error_handler) |
| 5412 | (_("%B: linking auto-pic files with non-auto-pic files"), |
| 5413 | ibfd); |
| 5414 | |
| 5415 | bfd_set_error (bfd_error_bad_value); |
| 5416 | ok = FALSE; |
| 5417 | } |
| 5418 | |
| 5419 | return ok; |
| 5420 | } |
| 5421 | |
| 5422 | static bfd_boolean |
| 5423 | elfNN_ia64_print_private_bfd_data (bfd *abfd, PTR ptr) |
| 5424 | { |
| 5425 | FILE *file = (FILE *) ptr; |
| 5426 | flagword flags = elf_elfheader (abfd)->e_flags; |
| 5427 | |
| 5428 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 5429 | |
| 5430 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", |
| 5431 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", |
| 5432 | (flags & EF_IA_64_EXT) ? "EXT, " : "", |
| 5433 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", |
| 5434 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", |
| 5435 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", |
| 5436 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", |
| 5437 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", |
| 5438 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); |
| 5439 | |
| 5440 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 5441 | return TRUE; |
| 5442 | } |
| 5443 | |
| 5444 | static enum elf_reloc_type_class |
| 5445 | elfNN_ia64_reloc_type_class (const Elf_Internal_Rela *rela) |
| 5446 | { |
| 5447 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
| 5448 | { |
| 5449 | case R_IA64_REL32MSB: |
| 5450 | case R_IA64_REL32LSB: |
| 5451 | case R_IA64_REL64MSB: |
| 5452 | case R_IA64_REL64LSB: |
| 5453 | return reloc_class_relative; |
| 5454 | case R_IA64_IPLTMSB: |
| 5455 | case R_IA64_IPLTLSB: |
| 5456 | return reloc_class_plt; |
| 5457 | case R_IA64_COPY: |
| 5458 | return reloc_class_copy; |
| 5459 | default: |
| 5460 | return reloc_class_normal; |
| 5461 | } |
| 5462 | } |
| 5463 | |
| 5464 | static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = |
| 5465 | { |
| 5466 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 5467 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 5468 | { NULL, 0, 0, 0, 0 } |
| 5469 | }; |
| 5470 | |
| 5471 | static bfd_boolean |
| 5472 | elfNN_ia64_object_p (bfd *abfd) |
| 5473 | { |
| 5474 | asection *sec; |
| 5475 | asection *group, *unwi, *unw; |
| 5476 | flagword flags; |
| 5477 | const char *name; |
| 5478 | char *unwi_name, *unw_name; |
| 5479 | bfd_size_type amt; |
| 5480 | |
| 5481 | if (abfd->flags & DYNAMIC) |
| 5482 | return TRUE; |
| 5483 | |
| 5484 | /* Flags for fake group section. */ |
| 5485 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE |
| 5486 | | SEC_EXCLUDE); |
| 5487 | |
| 5488 | /* We add a fake section group for each .gnu.linkonce.t.* section, |
| 5489 | which isn't in a section group, and its unwind sections. */ |
| 5490 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 5491 | { |
| 5492 | if (elf_sec_group (sec) == NULL |
| 5493 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) |
| 5494 | == (SEC_LINK_ONCE | SEC_CODE)) |
| 5495 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) |
| 5496 | { |
| 5497 | name = sec->name + 16; |
| 5498 | |
| 5499 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); |
| 5500 | unwi_name = bfd_alloc (abfd, amt); |
| 5501 | if (!unwi_name) |
| 5502 | return FALSE; |
| 5503 | |
| 5504 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); |
| 5505 | unwi = bfd_get_section_by_name (abfd, unwi_name); |
| 5506 | |
| 5507 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); |
| 5508 | unw_name = bfd_alloc (abfd, amt); |
| 5509 | if (!unw_name) |
| 5510 | return FALSE; |
| 5511 | |
| 5512 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); |
| 5513 | unw = bfd_get_section_by_name (abfd, unw_name); |
| 5514 | |
| 5515 | /* We need to create a fake group section for it and its |
| 5516 | unwind sections. */ |
| 5517 | group = bfd_make_section_anyway_with_flags (abfd, name, |
| 5518 | flags); |
| 5519 | if (group == NULL) |
| 5520 | return FALSE; |
| 5521 | |
| 5522 | /* Move the fake group section to the beginning. */ |
| 5523 | bfd_section_list_remove (abfd, group); |
| 5524 | bfd_section_list_prepend (abfd, group); |
| 5525 | |
| 5526 | elf_next_in_group (group) = sec; |
| 5527 | |
| 5528 | elf_group_name (sec) = name; |
| 5529 | elf_next_in_group (sec) = sec; |
| 5530 | elf_sec_group (sec) = group; |
| 5531 | |
| 5532 | if (unwi) |
| 5533 | { |
| 5534 | elf_group_name (unwi) = name; |
| 5535 | elf_next_in_group (unwi) = sec; |
| 5536 | elf_next_in_group (sec) = unwi; |
| 5537 | elf_sec_group (unwi) = group; |
| 5538 | } |
| 5539 | |
| 5540 | if (unw) |
| 5541 | { |
| 5542 | elf_group_name (unw) = name; |
| 5543 | if (unwi) |
| 5544 | { |
| 5545 | elf_next_in_group (unw) = elf_next_in_group (unwi); |
| 5546 | elf_next_in_group (unwi) = unw; |
| 5547 | } |
| 5548 | else |
| 5549 | { |
| 5550 | elf_next_in_group (unw) = sec; |
| 5551 | elf_next_in_group (sec) = unw; |
| 5552 | } |
| 5553 | elf_sec_group (unw) = group; |
| 5554 | } |
| 5555 | |
| 5556 | /* Fake SHT_GROUP section header. */ |
| 5557 | elf_section_data (group)->this_hdr.bfd_section = group; |
| 5558 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; |
| 5559 | } |
| 5560 | } |
| 5561 | return TRUE; |
| 5562 | } |
| 5563 | |
| 5564 | static bfd_boolean |
| 5565 | elfNN_ia64_hpux_vec (const bfd_target *vec) |
| 5566 | { |
| 5567 | extern const bfd_target bfd_elfNN_ia64_hpux_big_vec; |
| 5568 | return (vec == & bfd_elfNN_ia64_hpux_big_vec); |
| 5569 | } |
| 5570 | |
| 5571 | static void |
| 5572 | elfNN_hpux_post_process_headers (bfd *abfd, |
| 5573 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 5574 | { |
| 5575 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); |
| 5576 | |
| 5577 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
| 5578 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; |
| 5579 | } |
| 5580 | |
| 5581 | static bfd_boolean |
| 5582 | elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
| 5583 | asection *sec, int *retval) |
| 5584 | { |
| 5585 | if (bfd_is_com_section (sec)) |
| 5586 | { |
| 5587 | *retval = SHN_IA_64_ANSI_COMMON; |
| 5588 | return TRUE; |
| 5589 | } |
| 5590 | return FALSE; |
| 5591 | } |
| 5592 | |
| 5593 | static void |
| 5594 | elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
| 5595 | asymbol *asym) |
| 5596 | { |
| 5597 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; |
| 5598 | |
| 5599 | switch (elfsym->internal_elf_sym.st_shndx) |
| 5600 | { |
| 5601 | case SHN_IA_64_ANSI_COMMON: |
| 5602 | asym->section = bfd_com_section_ptr; |
| 5603 | asym->value = elfsym->internal_elf_sym.st_size; |
| 5604 | asym->flags &= ~BSF_GLOBAL; |
| 5605 | break; |
| 5606 | } |
| 5607 | } |
| 5608 | |
| 5609 | \f |
| 5610 | #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec |
| 5611 | #define TARGET_LITTLE_NAME "elfNN-ia64-little" |
| 5612 | #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec |
| 5613 | #define TARGET_BIG_NAME "elfNN-ia64-big" |
| 5614 | #define ELF_ARCH bfd_arch_ia64 |
| 5615 | #define ELF_MACHINE_CODE EM_IA_64 |
| 5616 | #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ |
| 5617 | #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ |
| 5618 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ |
| 5619 | #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ |
| 5620 | |
| 5621 | #define elf_backend_section_from_shdr \ |
| 5622 | elfNN_ia64_section_from_shdr |
| 5623 | #define elf_backend_section_flags \ |
| 5624 | elfNN_ia64_section_flags |
| 5625 | #define elf_backend_fake_sections \ |
| 5626 | elfNN_ia64_fake_sections |
| 5627 | #define elf_backend_final_write_processing \ |
| 5628 | elfNN_ia64_final_write_processing |
| 5629 | #define elf_backend_add_symbol_hook \ |
| 5630 | elfNN_ia64_add_symbol_hook |
| 5631 | #define elf_backend_additional_program_headers \ |
| 5632 | elfNN_ia64_additional_program_headers |
| 5633 | #define elf_backend_modify_segment_map \ |
| 5634 | elfNN_ia64_modify_segment_map |
| 5635 | #define elf_backend_modify_program_headers \ |
| 5636 | elfNN_ia64_modify_program_headers |
| 5637 | #define elf_info_to_howto \ |
| 5638 | elfNN_ia64_info_to_howto |
| 5639 | |
| 5640 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
| 5641 | elfNN_ia64_reloc_type_lookup |
| 5642 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
| 5643 | elfNN_ia64_reloc_name_lookup |
| 5644 | #define bfd_elfNN_bfd_is_local_label_name \ |
| 5645 | elfNN_ia64_is_local_label_name |
| 5646 | #define bfd_elfNN_bfd_relax_section \ |
| 5647 | elfNN_ia64_relax_section |
| 5648 | |
| 5649 | #define elf_backend_object_p \ |
| 5650 | elfNN_ia64_object_p |
| 5651 | |
| 5652 | /* Stuff for the BFD linker: */ |
| 5653 | #define bfd_elfNN_bfd_link_hash_table_create \ |
| 5654 | elfNN_ia64_hash_table_create |
| 5655 | #define bfd_elfNN_bfd_link_hash_table_free \ |
| 5656 | elfNN_ia64_hash_table_free |
| 5657 | #define elf_backend_create_dynamic_sections \ |
| 5658 | elfNN_ia64_create_dynamic_sections |
| 5659 | #define elf_backend_check_relocs \ |
| 5660 | elfNN_ia64_check_relocs |
| 5661 | #define elf_backend_adjust_dynamic_symbol \ |
| 5662 | elfNN_ia64_adjust_dynamic_symbol |
| 5663 | #define elf_backend_size_dynamic_sections \ |
| 5664 | elfNN_ia64_size_dynamic_sections |
| 5665 | #define elf_backend_omit_section_dynsym \ |
| 5666 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) |
| 5667 | #define elf_backend_relocate_section \ |
| 5668 | elfNN_ia64_relocate_section |
| 5669 | #define elf_backend_finish_dynamic_symbol \ |
| 5670 | elfNN_ia64_finish_dynamic_symbol |
| 5671 | #define elf_backend_finish_dynamic_sections \ |
| 5672 | elfNN_ia64_finish_dynamic_sections |
| 5673 | #define bfd_elfNN_bfd_final_link \ |
| 5674 | elfNN_ia64_final_link |
| 5675 | |
| 5676 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
| 5677 | elfNN_ia64_merge_private_bfd_data |
| 5678 | #define bfd_elfNN_bfd_set_private_flags \ |
| 5679 | elfNN_ia64_set_private_flags |
| 5680 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
| 5681 | elfNN_ia64_print_private_bfd_data |
| 5682 | |
| 5683 | #define elf_backend_plt_readonly 1 |
| 5684 | #define elf_backend_want_plt_sym 0 |
| 5685 | #define elf_backend_plt_alignment 5 |
| 5686 | #define elf_backend_got_header_size 0 |
| 5687 | #define elf_backend_want_got_plt 1 |
| 5688 | #define elf_backend_may_use_rel_p 1 |
| 5689 | #define elf_backend_may_use_rela_p 1 |
| 5690 | #define elf_backend_default_use_rela_p 1 |
| 5691 | #define elf_backend_want_dynbss 0 |
| 5692 | #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect |
| 5693 | #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol |
| 5694 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol |
| 5695 | #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class |
| 5696 | #define elf_backend_rela_normal 1 |
| 5697 | #define elf_backend_special_sections elfNN_ia64_special_sections |
| 5698 | #define elf_backend_default_execstack 0 |
| 5699 | |
| 5700 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with |
| 5701 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. |
| 5702 | We don't want to flood users with so many error messages. We turn |
| 5703 | off the warning for now. It will be turned on later when the Intel |
| 5704 | compiler is fixed. */ |
| 5705 | #define elf_backend_link_order_error_handler NULL |
| 5706 | |
| 5707 | #include "elfNN-target.h" |
| 5708 | |
| 5709 | /* HPUX-specific vectors. */ |
| 5710 | |
| 5711 | #undef TARGET_LITTLE_SYM |
| 5712 | #undef TARGET_LITTLE_NAME |
| 5713 | #undef TARGET_BIG_SYM |
| 5714 | #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec |
| 5715 | #undef TARGET_BIG_NAME |
| 5716 | #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" |
| 5717 | |
| 5718 | /* These are HP-UX specific functions. */ |
| 5719 | |
| 5720 | #undef elf_backend_post_process_headers |
| 5721 | #define elf_backend_post_process_headers elfNN_hpux_post_process_headers |
| 5722 | |
| 5723 | #undef elf_backend_section_from_bfd_section |
| 5724 | #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section |
| 5725 | |
| 5726 | #undef elf_backend_symbol_processing |
| 5727 | #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing |
| 5728 | |
| 5729 | #undef elf_backend_want_p_paddr_set_to_zero |
| 5730 | #define elf_backend_want_p_paddr_set_to_zero 1 |
| 5731 | |
| 5732 | #undef ELF_COMMONPAGESIZE |
| 5733 | #undef ELF_OSABI |
| 5734 | #define ELF_OSABI ELFOSABI_HPUX |
| 5735 | |
| 5736 | #undef elfNN_bed |
| 5737 | #define elfNN_bed elfNN_ia64_hpux_bed |
| 5738 | |
| 5739 | #include "elfNN-target.h" |
| 5740 | |
| 5741 | #undef elf_backend_want_p_paddr_set_to_zero |