| 1 | /* BFD back-end for HP PA-RISC ELF files. |
| 2 | Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 1997 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | Written by |
| 6 | |
| 7 | Center for Software Science |
| 8 | Department of Computer Science |
| 9 | University of Utah |
| 10 | |
| 11 | This file is part of BFD, the Binary File Descriptor library. |
| 12 | |
| 13 | This program is free software; you can redistribute it and/or modify |
| 14 | it under the terms of the GNU General Public License as published by |
| 15 | the Free Software Foundation; either version 2 of the License, or |
| 16 | (at your option) any later version. |
| 17 | |
| 18 | This program is distributed in the hope that it will be useful, |
| 19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | GNU General Public License for more details. |
| 22 | |
| 23 | You should have received a copy of the GNU General Public License |
| 24 | along with this program; if not, write to the Free Software |
| 25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 26 | |
| 27 | #include "bfd.h" |
| 28 | #include "sysdep.h" |
| 29 | #include "bfdlink.h" |
| 30 | #include "libbfd.h" |
| 31 | #include "obstack.h" |
| 32 | #include "elf-bfd.h" |
| 33 | |
| 34 | /* The internal type of a symbol table extension entry. */ |
| 35 | typedef unsigned long symext_entryS; |
| 36 | |
| 37 | /* The external type of a symbol table extension entry. */ |
| 38 | #define ELF32_PARISC_SX_SIZE (4) |
| 39 | #define ELF32_PARISC_SX_GET(bfd, addr) bfd_h_get_32 ((bfd), (addr)) |
| 40 | #define ELF32_PARISC_SX_PUT(bfd, val, addr) \ |
| 41 | bfd_h_put_32 ((bfd), (val), (addr)) |
| 42 | |
| 43 | /* HPPA symbol table extension entry types */ |
| 44 | enum elf32_hppa_symextn_types |
| 45 | { |
| 46 | PARISC_SXT_NULL, |
| 47 | PARISC_SXT_SYMNDX, |
| 48 | PARISC_SXT_ARG_RELOC, |
| 49 | }; |
| 50 | |
| 51 | /* These macros compose and decompose the value of a symextn entry: |
| 52 | |
| 53 | entry_type = ELF32_PARISC_SX_TYPE(word); |
| 54 | entry_value = ELF32_PARISC_SX_VAL(word); |
| 55 | word = ELF32_PARISC_SX_WORD(type,val); */ |
| 56 | |
| 57 | #define ELF32_PARISC_SX_TYPE(p) ((p) >> 24) |
| 58 | #define ELF32_PARISC_SX_VAL(p) ((p) & 0xFFFFFF) |
| 59 | #define ELF32_PARISC_SX_WORD(type,val) (((type) << 24) + (val & 0xFFFFFF)) |
| 60 | |
| 61 | /* The following was added facilitate implementation of the .hppa_symextn |
| 62 | section. This section is built after the symbol table is built in the |
| 63 | elf_write_object_contents routine (called from bfd_close). It is built |
| 64 | so late because it requires information that is not known until |
| 65 | the symbol and string table sections have been allocated, and |
| 66 | the symbol table has been built. */ |
| 67 | |
| 68 | #define SYMEXTN_SECTION_NAME ".PARISC.symext" |
| 69 | |
| 70 | struct symext_chain |
| 71 | { |
| 72 | symext_entryS entry; |
| 73 | struct symext_chain *next; |
| 74 | }; |
| 75 | |
| 76 | typedef struct symext_chain symext_chainS; |
| 77 | |
| 78 | /* We use three different hash tables to hold information for |
| 79 | linking PA ELF objects. |
| 80 | |
| 81 | The first is the elf32_hppa_link_hash_table which is derived |
| 82 | from the standard ELF linker hash table. We use this as a place to |
| 83 | attach other hash tables and static information. |
| 84 | |
| 85 | The second is the stub hash table which is derived from the |
| 86 | base BFD hash table. The stub hash table holds the information |
| 87 | necessary to build the linker stubs during a link. |
| 88 | |
| 89 | The last hash table keeps track of argument location information needed |
| 90 | to build hash tables. Each function with nonzero argument location |
| 91 | bits will have an entry in this table. */ |
| 92 | |
| 93 | /* Hash table for linker stubs. */ |
| 94 | |
| 95 | struct elf32_hppa_stub_hash_entry |
| 96 | { |
| 97 | /* Base hash table entry structure, we can get the name of the stub |
| 98 | (and thus know exactly what actions it performs) from the base |
| 99 | hash table entry. */ |
| 100 | struct bfd_hash_entry root; |
| 101 | |
| 102 | /* Offset of the beginning of this stub. */ |
| 103 | bfd_vma offset; |
| 104 | |
| 105 | /* Given the symbol's value and its section we can determine its final |
| 106 | value when building the stubs (so the stub knows where to jump. */ |
| 107 | symvalue target_value; |
| 108 | asection *target_section; |
| 109 | }; |
| 110 | |
| 111 | struct elf32_hppa_stub_hash_table |
| 112 | { |
| 113 | /* The hash table itself. */ |
| 114 | struct bfd_hash_table root; |
| 115 | |
| 116 | /* The stub BFD. */ |
| 117 | bfd *stub_bfd; |
| 118 | |
| 119 | /* Where to place the next stub. */ |
| 120 | bfd_byte *location; |
| 121 | |
| 122 | /* Current offset in the stub section. */ |
| 123 | unsigned int offset; |
| 124 | |
| 125 | }; |
| 126 | |
| 127 | /* Hash table for argument location information. */ |
| 128 | |
| 129 | struct elf32_hppa_args_hash_entry |
| 130 | { |
| 131 | /* Base hash table entry structure. */ |
| 132 | struct bfd_hash_entry root; |
| 133 | |
| 134 | /* The argument location bits for this entry. */ |
| 135 | int arg_bits; |
| 136 | }; |
| 137 | |
| 138 | struct elf32_hppa_args_hash_table |
| 139 | { |
| 140 | /* The hash table itself. */ |
| 141 | struct bfd_hash_table root; |
| 142 | }; |
| 143 | |
| 144 | struct elf32_hppa_link_hash_entry |
| 145 | { |
| 146 | struct elf_link_hash_entry root; |
| 147 | }; |
| 148 | |
| 149 | struct elf32_hppa_link_hash_table |
| 150 | { |
| 151 | /* The main hash table. */ |
| 152 | struct elf_link_hash_table root; |
| 153 | |
| 154 | /* The stub hash table. */ |
| 155 | struct elf32_hppa_stub_hash_table *stub_hash_table; |
| 156 | |
| 157 | /* The argument relocation bits hash table. */ |
| 158 | struct elf32_hppa_args_hash_table *args_hash_table; |
| 159 | |
| 160 | /* A count of the number of output symbols. */ |
| 161 | unsigned int output_symbol_count; |
| 162 | |
| 163 | /* Stuff so we can handle DP relative relocations. */ |
| 164 | long global_value; |
| 165 | int global_sym_defined; |
| 166 | }; |
| 167 | |
| 168 | /* FIXME. */ |
| 169 | #define ARGUMENTS 0 |
| 170 | #define RETURN_VALUE 1 |
| 171 | |
| 172 | /* The various argument relocations that may be performed. */ |
| 173 | typedef enum |
| 174 | { |
| 175 | /* No relocation. */ |
| 176 | NO, |
| 177 | /* Relocate 32 bits from GR to FP register. */ |
| 178 | GF, |
| 179 | /* Relocate 64 bits from a GR pair to FP pair. */ |
| 180 | GD, |
| 181 | /* Relocate 32 bits from FP to GR. */ |
| 182 | FG, |
| 183 | /* Relocate 64 bits from FP pair to GR pair. */ |
| 184 | DG, |
| 185 | } arg_reloc_type; |
| 186 | |
| 187 | /* What is being relocated (eg which argument or the return value). */ |
| 188 | typedef enum |
| 189 | { |
| 190 | ARG0, ARG1, ARG2, ARG3, RET, |
| 191 | } arg_reloc_location; |
| 192 | |
| 193 | |
| 194 | /* ELF32/HPPA relocation support |
| 195 | |
| 196 | This file contains ELF32/HPPA relocation support as specified |
| 197 | in the Stratus FTX/Golf Object File Format (SED-1762) dated |
| 198 | February 1994. */ |
| 199 | |
| 200 | #include "elf32-hppa.h" |
| 201 | #include "hppa_stubs.h" |
| 202 | |
| 203 | static bfd_reloc_status_type hppa_elf_reloc |
| 204 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 205 | |
| 206 | static unsigned long hppa_elf_relocate_insn |
| 207 | PARAMS ((bfd *, asection *, unsigned long, unsigned long, long, |
| 208 | long, unsigned long, unsigned long, unsigned long)); |
| 209 | |
| 210 | static bfd_reloc_status_type hppa_elf_reloc |
| 211 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **)); |
| 212 | |
| 213 | static reloc_howto_type * elf_hppa_reloc_type_lookup |
| 214 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 215 | |
| 216 | static boolean elf32_hppa_set_section_contents |
| 217 | PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); |
| 218 | |
| 219 | static void elf32_hppa_info_to_howto |
| 220 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| 221 | |
| 222 | static boolean elf32_hppa_backend_symbol_table_processing |
| 223 | PARAMS ((bfd *, elf_symbol_type *, unsigned int)); |
| 224 | |
| 225 | static void elf32_hppa_backend_begin_write_processing |
| 226 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 227 | |
| 228 | static void elf32_hppa_backend_final_write_processing |
| 229 | PARAMS ((bfd *, boolean)); |
| 230 | |
| 231 | static void add_entry_to_symext_chain |
| 232 | PARAMS ((bfd *, unsigned int, unsigned int, symext_chainS **, |
| 233 | symext_chainS **)); |
| 234 | |
| 235 | static void |
| 236 | elf_hppa_tc_make_sections PARAMS ((bfd *, symext_chainS *)); |
| 237 | |
| 238 | static boolean hppa_elf_is_local_label_name PARAMS ((bfd *, const char *)); |
| 239 | |
| 240 | static boolean elf32_hppa_add_symbol_hook |
| 241 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| 242 | const char **, flagword *, asection **, bfd_vma *)); |
| 243 | |
| 244 | static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate |
| 245 | PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, |
| 246 | bfd_byte *, bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *, |
| 247 | asection *, const char *, int)); |
| 248 | |
| 249 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create |
| 250 | PARAMS ((bfd *)); |
| 251 | |
| 252 | static struct bfd_hash_entry * |
| 253 | elf32_hppa_stub_hash_newfunc |
| 254 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 255 | |
| 256 | static struct bfd_hash_entry * |
| 257 | elf32_hppa_args_hash_newfunc |
| 258 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 259 | |
| 260 | static boolean |
| 261 | elf32_hppa_relocate_section |
| 262 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, |
| 263 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 264 | |
| 265 | static boolean |
| 266 | elf32_hppa_stub_hash_table_init |
| 267 | PARAMS ((struct elf32_hppa_stub_hash_table *, bfd *, |
| 268 | struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, |
| 269 | struct bfd_hash_table *, |
| 270 | const char *)))); |
| 271 | |
| 272 | static boolean |
| 273 | elf32_hppa_build_one_stub PARAMS ((struct bfd_hash_entry *, PTR)); |
| 274 | |
| 275 | static boolean |
| 276 | elf32_hppa_read_symext_info |
| 277 | PARAMS ((bfd *, Elf_Internal_Shdr *, struct elf32_hppa_args_hash_table *, |
| 278 | Elf_Internal_Sym *)); |
| 279 | |
| 280 | static unsigned int elf32_hppa_size_of_stub |
| 281 | PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, const char *)); |
| 282 | |
| 283 | static boolean elf32_hppa_arg_reloc_needed |
| 284 | PARAMS ((unsigned int, unsigned int, arg_reloc_type [])); |
| 285 | |
| 286 | static void elf32_hppa_name_of_stub |
| 287 | PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, char *)); |
| 288 | |
| 289 | static boolean elf32_hppa_size_symext PARAMS ((struct bfd_hash_entry *, PTR)); |
| 290 | |
| 291 | static boolean elf32_hppa_link_output_symbol_hook |
| 292 | PARAMS ((bfd *, struct bfd_link_info *, const char *, |
| 293 | Elf_Internal_Sym *, asection *)); |
| 294 | |
| 295 | /* ELF/PA relocation howto entries. */ |
| 296 | |
| 297 | static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] = |
| 298 | { |
| 299 | {R_PARISC_NONE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_NONE"}, |
| 300 | /* The values in DIR32 are to placate the check in |
| 301 | _bfd_stab_section_find_nearest_line. */ |
| 302 | {R_PARISC_DIR32, 0, 2, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR32", false, 0, 0xffffffff, false}, |
| 303 | {R_PARISC_DIR21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR21L"}, |
| 304 | {R_PARISC_DIR17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17R"}, |
| 305 | {R_PARISC_DIR17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17F"}, |
| 306 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 307 | {R_PARISC_DIR14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR14R"}, |
| 308 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 309 | |
| 310 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 311 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 312 | {R_PARISC_PCREL21L, 0, 0, 21, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL21L"}, |
| 313 | {R_PARISC_PCREL17R, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17R"}, |
| 314 | {R_PARISC_PCREL17F, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17F"}, |
| 315 | {R_PARISC_PCREL17C, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17C"}, |
| 316 | {R_PARISC_PCREL14R, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14R"}, |
| 317 | {R_PARISC_PCREL14F, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14F"}, |
| 318 | |
| 319 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 320 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 321 | {R_PARISC_DPREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL21L"}, |
| 322 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 323 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 324 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 325 | {R_PARISC_DPREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14R"}, |
| 326 | {R_PARISC_DPREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14F"}, |
| 327 | |
| 328 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 329 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 330 | {R_PARISC_DLTREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL21L"}, |
| 331 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 332 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 333 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 334 | {R_PARISC_DLTREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14R"}, |
| 335 | {R_PARISC_DLTREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14F"}, |
| 336 | |
| 337 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 338 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 339 | {R_PARISC_DLTIND21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND21L"}, |
| 340 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 341 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 342 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 343 | {R_PARISC_DLTIND14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14R"}, |
| 344 | {R_PARISC_DLTIND14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14F"}, |
| 345 | |
| 346 | {R_PARISC_SETBASE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_SETBASE"}, |
| 347 | {R_PARISC_BASEREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL32"}, |
| 348 | {R_PARISC_BASEREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL21L"}, |
| 349 | {R_PARISC_BASEREL17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17R"}, |
| 350 | {R_PARISC_BASEREL17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17F"}, |
| 351 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 352 | {R_PARISC_BASEREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14R"}, |
| 353 | {R_PARISC_BASEREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14F"}, |
| 354 | |
| 355 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 356 | {R_PARISC_TEXTREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_TEXTREL32"}, |
| 357 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 358 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 359 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 360 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 361 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 362 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 363 | |
| 364 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 365 | {R_PARISC_DATAREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 366 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 367 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 368 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 369 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 370 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 371 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 372 | |
| 373 | |
| 374 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 375 | {R_PARISC_PLABEL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL32"}, |
| 376 | {R_PARISC_PLABEL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL21L"}, |
| 377 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 378 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 379 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 380 | {R_PARISC_PLABEL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL14R"}, |
| 381 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 382 | |
| 383 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 384 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 385 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 386 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 387 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 388 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 389 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 390 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 391 | |
| 392 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 393 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 394 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 395 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 396 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 397 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 398 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 399 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 400 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 401 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 402 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 403 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 404 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 405 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 406 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 407 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 408 | |
| 409 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 410 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 411 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 412 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 413 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 414 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 415 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 416 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 417 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 418 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 419 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 420 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 421 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 422 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 423 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 424 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 425 | |
| 426 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 427 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 428 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 429 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 430 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 431 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 432 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 433 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 434 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 435 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 436 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 437 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 438 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 439 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 440 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 441 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 442 | |
| 443 | |
| 444 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 445 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 446 | {R_PARISC_PLTIND21L, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND21L"}, |
| 447 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 448 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 449 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| 450 | {R_PARISC_PLTIND14R, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14R"}, |
| 451 | {R_PARISC_PLTIND14F, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14F"}, |
| 452 | |
| 453 | |
| 454 | {R_PARISC_COPY, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_COPY"}, |
| 455 | {R_PARISC_GLOB_DAT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_GLOB_DAT"}, |
| 456 | {R_PARISC_JMP_SLOT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_JMP_SLOT"}, |
| 457 | {R_PARISC_RELATIVE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_RELATIVE"}, |
| 458 | |
| 459 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_PARISC_UNIMPLEMENTED"}, |
| 460 | }; |
| 461 | |
| 462 | /* Where (what register type) is an argument comming from? */ |
| 463 | typedef enum |
| 464 | { |
| 465 | AR_NO, |
| 466 | AR_GR, |
| 467 | AR_FR, |
| 468 | AR_FU, |
| 469 | AR_FPDBL1, |
| 470 | AR_FPDBL2, |
| 471 | } arg_location; |
| 472 | |
| 473 | /* Horizontal represents the callee's argument location information, |
| 474 | vertical represents caller's argument location information. Value at a |
| 475 | particular X,Y location represents what (if any) argument relocation |
| 476 | needs to be performed to make caller and callee agree. */ |
| 477 | |
| 478 | static CONST arg_reloc_type arg_mismatches[6][6] = |
| 479 | { |
| 480 | {NO, NO, NO, NO, NO, NO}, |
| 481 | {NO, NO, GF, NO, GD, NO}, |
| 482 | {NO, FG, NO, NO, NO, NO}, |
| 483 | {NO, NO, NO, NO, NO, NO}, |
| 484 | {NO, DG, NO, NO, NO, NO}, |
| 485 | {NO, DG, NO, NO, NO, NO}, |
| 486 | }; |
| 487 | |
| 488 | /* Likewise, but reversed for the return value. */ |
| 489 | static CONST arg_reloc_type ret_mismatches[6][6] = |
| 490 | { |
| 491 | {NO, NO, NO, NO, NO, NO}, |
| 492 | {NO, NO, FG, NO, DG, NO}, |
| 493 | {NO, GF, NO, NO, NO, NO}, |
| 494 | {NO, NO, NO, NO, NO, NO}, |
| 495 | {NO, GD, NO, NO, NO, NO}, |
| 496 | {NO, GD, NO, NO, NO, NO}, |
| 497 | }; |
| 498 | |
| 499 | /* Misc static crud for symbol extension records. */ |
| 500 | static symext_chainS *symext_rootP; |
| 501 | static symext_chainS *symext_lastP; |
| 502 | static bfd_size_type symext_chain_size; |
| 503 | |
| 504 | /* FIXME: We should be able to try this static variable! */ |
| 505 | static bfd_byte *symextn_contents; |
| 506 | |
| 507 | |
| 508 | /* For linker stub hash tables. */ |
| 509 | #define elf32_hppa_stub_hash_lookup(table, string, create, copy) \ |
| 510 | ((struct elf32_hppa_stub_hash_entry *) \ |
| 511 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
| 512 | |
| 513 | #define elf32_hppa_stub_hash_traverse(table, func, info) \ |
| 514 | (bfd_hash_traverse \ |
| 515 | (&(table)->root, \ |
| 516 | (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ |
| 517 | (info))) |
| 518 | |
| 519 | /* For linker args hash tables. */ |
| 520 | #define elf32_hppa_args_hash_lookup(table, string, create, copy) \ |
| 521 | ((struct elf32_hppa_args_hash_entry *) \ |
| 522 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
| 523 | |
| 524 | #define elf32_hppa_args_hash_traverse(table, func, info) \ |
| 525 | (bfd_hash_traverse \ |
| 526 | (&(table)->root, \ |
| 527 | (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ |
| 528 | (info))) |
| 529 | |
| 530 | #define elf32_hppa_args_hash_table_init(table, newfunc) \ |
| 531 | (bfd_hash_table_init \ |
| 532 | (&(table)->root, \ |
| 533 | (struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, \ |
| 534 | struct bfd_hash_table *, \ |
| 535 | const char *))) (newfunc))) |
| 536 | |
| 537 | /* For HPPA linker hash table. */ |
| 538 | |
| 539 | #define elf32_hppa_link_hash_lookup(table, string, create, copy, follow)\ |
| 540 | ((struct elf32_hppa_link_hash_entry *) \ |
| 541 | elf_link_hash_lookup (&(table)->root, (string), (create), \ |
| 542 | (copy), (follow))) |
| 543 | |
| 544 | #define elf32_hppa_link_hash_traverse(table, func, info) \ |
| 545 | (elf_link_hash_traverse \ |
| 546 | (&(table)->root, \ |
| 547 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| 548 | (info))) |
| 549 | |
| 550 | /* Get the PA ELF linker hash table from a link_info structure. */ |
| 551 | |
| 552 | #define elf32_hppa_hash_table(p) \ |
| 553 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
| 554 | |
| 555 | |
| 556 | /* Extract specific argument location bits for WHICH from |
| 557 | the full argument location in AR. */ |
| 558 | #define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3 |
| 559 | |
| 560 | /* Assorted hash table functions. */ |
| 561 | |
| 562 | /* Initialize an entry in the stub hash table. */ |
| 563 | |
| 564 | static struct bfd_hash_entry * |
| 565 | elf32_hppa_stub_hash_newfunc (entry, table, string) |
| 566 | struct bfd_hash_entry *entry; |
| 567 | struct bfd_hash_table *table; |
| 568 | const char *string; |
| 569 | { |
| 570 | struct elf32_hppa_stub_hash_entry *ret; |
| 571 | |
| 572 | ret = (struct elf32_hppa_stub_hash_entry *) entry; |
| 573 | |
| 574 | /* Allocate the structure if it has not already been allocated by a |
| 575 | subclass. */ |
| 576 | if (ret == NULL) |
| 577 | ret = ((struct elf32_hppa_stub_hash_entry *) |
| 578 | bfd_hash_allocate (table, |
| 579 | sizeof (struct elf32_hppa_stub_hash_entry))); |
| 580 | if (ret == NULL) |
| 581 | return NULL; |
| 582 | |
| 583 | /* Call the allocation method of the superclass. */ |
| 584 | ret = ((struct elf32_hppa_stub_hash_entry *) |
| 585 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
| 586 | |
| 587 | if (ret) |
| 588 | { |
| 589 | /* Initialize the local fields. */ |
| 590 | ret->offset = 0; |
| 591 | ret->target_value = 0; |
| 592 | ret->target_section = NULL; |
| 593 | } |
| 594 | |
| 595 | return (struct bfd_hash_entry *) ret; |
| 596 | } |
| 597 | |
| 598 | /* Initialize a stub hash table. */ |
| 599 | |
| 600 | static boolean |
| 601 | elf32_hppa_stub_hash_table_init (table, stub_bfd, newfunc) |
| 602 | struct elf32_hppa_stub_hash_table *table; |
| 603 | bfd *stub_bfd; |
| 604 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, |
| 605 | struct bfd_hash_table *, |
| 606 | const char *)); |
| 607 | { |
| 608 | table->offset = 0; |
| 609 | table->location = 0; |
| 610 | table->stub_bfd = stub_bfd; |
| 611 | return (bfd_hash_table_init (&table->root, newfunc)); |
| 612 | } |
| 613 | |
| 614 | /* Initialize an entry in the argument location hash table. */ |
| 615 | |
| 616 | static struct bfd_hash_entry * |
| 617 | elf32_hppa_args_hash_newfunc (entry, table, string) |
| 618 | struct bfd_hash_entry *entry; |
| 619 | struct bfd_hash_table *table; |
| 620 | const char *string; |
| 621 | { |
| 622 | struct elf32_hppa_args_hash_entry *ret; |
| 623 | |
| 624 | ret = (struct elf32_hppa_args_hash_entry *) entry; |
| 625 | |
| 626 | /* Allocate the structure if it has not already been allocated by a |
| 627 | subclass. */ |
| 628 | if (ret == NULL) |
| 629 | ret = ((struct elf32_hppa_args_hash_entry *) |
| 630 | bfd_hash_allocate (table, |
| 631 | sizeof (struct elf32_hppa_args_hash_entry))); |
| 632 | if (ret == NULL) |
| 633 | return NULL; |
| 634 | |
| 635 | /* Call the allocation method of the superclass. */ |
| 636 | ret = ((struct elf32_hppa_args_hash_entry *) |
| 637 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
| 638 | |
| 639 | /* Initialize the local fields. */ |
| 640 | if (ret) |
| 641 | ret->arg_bits = 0; |
| 642 | |
| 643 | return (struct bfd_hash_entry *) ret; |
| 644 | } |
| 645 | |
| 646 | /* Create the derived linker hash table. The PA ELF port uses the derived |
| 647 | hash table to keep information specific to the PA ELF linker (without |
| 648 | using static variables). */ |
| 649 | |
| 650 | static struct bfd_link_hash_table * |
| 651 | elf32_hppa_link_hash_table_create (abfd) |
| 652 | bfd *abfd; |
| 653 | { |
| 654 | struct elf32_hppa_link_hash_table *ret; |
| 655 | |
| 656 | ret = ((struct elf32_hppa_link_hash_table *) |
| 657 | bfd_alloc (abfd, sizeof (struct elf32_hppa_link_hash_table))); |
| 658 | if (ret == NULL) |
| 659 | return NULL; |
| 660 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 661 | _bfd_elf_link_hash_newfunc)) |
| 662 | { |
| 663 | bfd_release (abfd, ret); |
| 664 | return NULL; |
| 665 | } |
| 666 | ret->stub_hash_table = NULL; |
| 667 | ret->args_hash_table = NULL; |
| 668 | ret->output_symbol_count = 0; |
| 669 | ret->global_value = 0; |
| 670 | ret->global_sym_defined = 0; |
| 671 | |
| 672 | return &ret->root.root; |
| 673 | } |
| 674 | |
| 675 | /* Relocate the given INSN given the various input parameters. |
| 676 | |
| 677 | FIXME: endianness and sizeof (long) issues abound here. */ |
| 678 | |
| 679 | static unsigned long |
| 680 | hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value, |
| 681 | r_addend, r_format, r_field, pcrel) |
| 682 | bfd *abfd; |
| 683 | asection *input_sect; |
| 684 | unsigned long insn; |
| 685 | unsigned long address; |
| 686 | long sym_value; |
| 687 | long r_addend; |
| 688 | unsigned long r_format; |
| 689 | unsigned long r_field; |
| 690 | unsigned long pcrel; |
| 691 | { |
| 692 | unsigned char opcode = get_opcode (insn); |
| 693 | long constant_value; |
| 694 | |
| 695 | switch (opcode) |
| 696 | { |
| 697 | case LDO: |
| 698 | case LDB: |
| 699 | case LDH: |
| 700 | case LDW: |
| 701 | case LDWM: |
| 702 | case STB: |
| 703 | case STH: |
| 704 | case STW: |
| 705 | case STWM: |
| 706 | case COMICLR: |
| 707 | case SUBI: |
| 708 | case ADDIT: |
| 709 | case ADDI: |
| 710 | case LDIL: |
| 711 | case ADDIL: |
| 712 | constant_value = HPPA_R_CONSTANT (r_addend); |
| 713 | |
| 714 | if (pcrel) |
| 715 | sym_value -= address; |
| 716 | |
| 717 | sym_value = hppa_field_adjust (sym_value, constant_value, r_field); |
| 718 | return hppa_rebuild_insn (abfd, insn, sym_value, r_format); |
| 719 | |
| 720 | case BL: |
| 721 | case BE: |
| 722 | case BLE: |
| 723 | /* XXX computing constant_value is not needed??? */ |
| 724 | constant_value = assemble_17 ((insn & 0x001f0000) >> 16, |
| 725 | (insn & 0x00001ffc) >> 2, |
| 726 | insn & 1); |
| 727 | |
| 728 | constant_value = (constant_value << 15) >> 15; |
| 729 | if (pcrel) |
| 730 | { |
| 731 | sym_value -= |
| 732 | address + input_sect->output_offset |
| 733 | + input_sect->output_section->vma; |
| 734 | sym_value = hppa_field_adjust (sym_value, -8, r_field); |
| 735 | } |
| 736 | else |
| 737 | sym_value = hppa_field_adjust (sym_value, constant_value, r_field); |
| 738 | |
| 739 | return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format); |
| 740 | |
| 741 | default: |
| 742 | if (opcode == 0) |
| 743 | { |
| 744 | constant_value = HPPA_R_CONSTANT (r_addend); |
| 745 | |
| 746 | if (pcrel) |
| 747 | sym_value -= address; |
| 748 | |
| 749 | return hppa_field_adjust (sym_value, constant_value, r_field); |
| 750 | } |
| 751 | else |
| 752 | abort (); |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | /* Relocate an HPPA ELF section. */ |
| 757 | |
| 758 | static boolean |
| 759 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, |
| 760 | contents, relocs, local_syms, local_sections) |
| 761 | bfd *output_bfd; |
| 762 | struct bfd_link_info *info; |
| 763 | bfd *input_bfd; |
| 764 | asection *input_section; |
| 765 | bfd_byte *contents; |
| 766 | Elf_Internal_Rela *relocs; |
| 767 | Elf_Internal_Sym *local_syms; |
| 768 | asection **local_sections; |
| 769 | { |
| 770 | Elf_Internal_Shdr *symtab_hdr; |
| 771 | Elf_Internal_Rela *rel; |
| 772 | Elf_Internal_Rela *relend; |
| 773 | |
| 774 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 775 | |
| 776 | rel = relocs; |
| 777 | relend = relocs + input_section->reloc_count; |
| 778 | for (; rel < relend; rel++) |
| 779 | { |
| 780 | int r_type; |
| 781 | reloc_howto_type *howto; |
| 782 | unsigned long r_symndx; |
| 783 | struct elf_link_hash_entry *h; |
| 784 | Elf_Internal_Sym *sym; |
| 785 | asection *sym_sec; |
| 786 | bfd_vma relocation; |
| 787 | bfd_reloc_status_type r; |
| 788 | const char *sym_name; |
| 789 | |
| 790 | r_type = ELF32_R_TYPE (rel->r_info); |
| 791 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) |
| 792 | { |
| 793 | bfd_set_error (bfd_error_bad_value); |
| 794 | return false; |
| 795 | } |
| 796 | howto = elf_hppa_howto_table + r_type; |
| 797 | |
| 798 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 799 | |
| 800 | if (info->relocateable) |
| 801 | { |
| 802 | /* This is a relocateable link. We don't have to change |
| 803 | anything, unless the reloc is against a section symbol, |
| 804 | in which case we have to adjust according to where the |
| 805 | section symbol winds up in the output section. */ |
| 806 | if (r_symndx < symtab_hdr->sh_info) |
| 807 | { |
| 808 | sym = local_syms + r_symndx; |
| 809 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 810 | { |
| 811 | sym_sec = local_sections[r_symndx]; |
| 812 | rel->r_addend += sym_sec->output_offset; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | continue; |
| 817 | } |
| 818 | |
| 819 | /* This is a final link. */ |
| 820 | h = NULL; |
| 821 | sym = NULL; |
| 822 | sym_sec = NULL; |
| 823 | if (r_symndx < symtab_hdr->sh_info) |
| 824 | { |
| 825 | sym = local_syms + r_symndx; |
| 826 | sym_sec = local_sections[r_symndx]; |
| 827 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| 828 | ? 0 : sym->st_value) |
| 829 | + sym_sec->output_offset |
| 830 | + sym_sec->output_section->vma); |
| 831 | } |
| 832 | else |
| 833 | { |
| 834 | long indx; |
| 835 | |
| 836 | indx = r_symndx - symtab_hdr->sh_info; |
| 837 | h = elf_sym_hashes (input_bfd)[indx]; |
| 838 | while (h->root.type == bfd_link_hash_indirect |
| 839 | || h->root.type == bfd_link_hash_warning) |
| 840 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 841 | if (h->root.type == bfd_link_hash_defined |
| 842 | || h->root.type == bfd_link_hash_defweak) |
| 843 | { |
| 844 | sym_sec = h->root.u.def.section; |
| 845 | relocation = (h->root.u.def.value |
| 846 | + sym_sec->output_offset |
| 847 | + sym_sec->output_section->vma); |
| 848 | } |
| 849 | else if (h->root.type == bfd_link_hash_undefweak) |
| 850 | relocation = 0; |
| 851 | else |
| 852 | { |
| 853 | if (!((*info->callbacks->undefined_symbol) |
| 854 | (info, h->root.root.string, input_bfd, |
| 855 | input_section, rel->r_offset))) |
| 856 | return false; |
| 857 | break; |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | if (h != NULL) |
| 862 | sym_name = h->root.root.string; |
| 863 | else |
| 864 | { |
| 865 | sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| 866 | symtab_hdr->sh_link, |
| 867 | sym->st_name); |
| 868 | if (sym_name == NULL) |
| 869 | return false; |
| 870 | if (*sym_name == '\0') |
| 871 | sym_name = bfd_section_name (input_bfd, sym_sec); |
| 872 | } |
| 873 | |
| 874 | /* If args_hash_table is NULL, then we have encountered some |
| 875 | kind of link error (ex. undefined symbols). Do not try to |
| 876 | apply any relocations, continue the loop so we can notify |
| 877 | the user of several errors in a single attempted link. */ |
| 878 | if (elf32_hppa_hash_table (info)->args_hash_table == NULL) |
| 879 | continue; |
| 880 | |
| 881 | r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, |
| 882 | input_section, contents, |
| 883 | rel->r_offset, relocation, |
| 884 | rel->r_addend, info, sym_sec, |
| 885 | sym_name, h == NULL); |
| 886 | |
| 887 | if (r != bfd_reloc_ok) |
| 888 | { |
| 889 | switch (r) |
| 890 | { |
| 891 | /* This can happen for DP relative relocs if $global$ is |
| 892 | undefined. This is a panic situation so we don't try |
| 893 | to continue. */ |
| 894 | case bfd_reloc_undefined: |
| 895 | case bfd_reloc_notsupported: |
| 896 | if (!((*info->callbacks->undefined_symbol) |
| 897 | (info, "$global$", input_bfd, |
| 898 | input_section, rel->r_offset))) |
| 899 | return false; |
| 900 | return false; |
| 901 | case bfd_reloc_dangerous: |
| 902 | { |
| 903 | /* We use this return value to indicate that we performed |
| 904 | a "dangerous" relocation. This doesn't mean we did |
| 905 | the wrong thing, it just means there may be some cleanup |
| 906 | that needs to be done here. |
| 907 | |
| 908 | In particular we had to swap the last call insn and its |
| 909 | delay slot. If the delay slot insn needed a relocation, |
| 910 | then we'll need to adjust the next relocation entry's |
| 911 | offset to account for the fact that the insn moved. |
| 912 | |
| 913 | This hair wouldn't be necessary if we inserted stubs |
| 914 | between procedures and used a "bl" to get to the stub. */ |
| 915 | if (rel != relend) |
| 916 | { |
| 917 | Elf_Internal_Rela *next_rel = rel + 1; |
| 918 | |
| 919 | if (rel->r_offset + 4 == next_rel->r_offset) |
| 920 | next_rel->r_offset -= 4; |
| 921 | } |
| 922 | break; |
| 923 | } |
| 924 | default: |
| 925 | case bfd_reloc_outofrange: |
| 926 | case bfd_reloc_overflow: |
| 927 | { |
| 928 | if (!((*info->callbacks->reloc_overflow) |
| 929 | (info, sym_name, howto->name, (bfd_vma) 0, |
| 930 | input_bfd, input_section, rel->r_offset))) |
| 931 | return false; |
| 932 | } |
| 933 | break; |
| 934 | } |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | return true; |
| 939 | } |
| 940 | |
| 941 | /* Return one (or more) BFD relocations which implement the base |
| 942 | relocation with modifications based on format and field. */ |
| 943 | |
| 944 | elf32_hppa_reloc_type ** |
| 945 | hppa_elf_gen_reloc_type (abfd, base_type, format, field, ignore, sym) |
| 946 | bfd *abfd; |
| 947 | elf32_hppa_reloc_type base_type; |
| 948 | int format; |
| 949 | int field; |
| 950 | int ignore; |
| 951 | asymbol *sym; |
| 952 | { |
| 953 | elf32_hppa_reloc_type *finaltype; |
| 954 | elf32_hppa_reloc_type **final_types; |
| 955 | |
| 956 | /* Allocate slots for the BFD relocation. */ |
| 957 | final_types = ((elf32_hppa_reloc_type **) |
| 958 | bfd_alloc (abfd, sizeof (elf32_hppa_reloc_type *) * 2)); |
| 959 | if (final_types == NULL) |
| 960 | return NULL; |
| 961 | |
| 962 | /* Allocate space for the relocation itself. */ |
| 963 | finaltype = ((elf32_hppa_reloc_type *) |
| 964 | bfd_alloc (abfd, sizeof (elf32_hppa_reloc_type))); |
| 965 | if (finaltype == NULL) |
| 966 | return NULL; |
| 967 | |
| 968 | /* Some reasonable defaults. */ |
| 969 | final_types[0] = finaltype; |
| 970 | final_types[1] = NULL; |
| 971 | |
| 972 | #define final_type finaltype[0] |
| 973 | |
| 974 | final_type = base_type; |
| 975 | |
| 976 | /* Just a tangle of nested switch statements to deal with the braindamage |
| 977 | that a different field selector means a completely different relocation |
| 978 | for PA ELF. */ |
| 979 | switch (base_type) |
| 980 | { |
| 981 | case R_HPPA: |
| 982 | case R_HPPA_ABS_CALL: |
| 983 | switch (format) |
| 984 | { |
| 985 | case 14: |
| 986 | switch (field) |
| 987 | { |
| 988 | case e_rsel: |
| 989 | case e_rrsel: |
| 990 | final_type = R_PARISC_DIR14R; |
| 991 | break; |
| 992 | case e_rtsel: |
| 993 | final_type = R_PARISC_DLTREL14R; |
| 994 | break; |
| 995 | case e_tsel: |
| 996 | final_type = R_PARISC_DLTREL14F; |
| 997 | break; |
| 998 | case e_rpsel: |
| 999 | final_type = R_PARISC_PLABEL14R; |
| 1000 | break; |
| 1001 | default: |
| 1002 | return NULL; |
| 1003 | } |
| 1004 | break; |
| 1005 | |
| 1006 | case 17: |
| 1007 | switch (field) |
| 1008 | { |
| 1009 | case e_fsel: |
| 1010 | final_type = R_PARISC_DIR17F; |
| 1011 | break; |
| 1012 | case e_rsel: |
| 1013 | case e_rrsel: |
| 1014 | final_type = R_PARISC_DIR17R; |
| 1015 | break; |
| 1016 | default: |
| 1017 | return NULL; |
| 1018 | } |
| 1019 | break; |
| 1020 | |
| 1021 | case 21: |
| 1022 | switch (field) |
| 1023 | { |
| 1024 | case e_lsel: |
| 1025 | case e_lrsel: |
| 1026 | final_type = R_PARISC_DIR21L; |
| 1027 | break; |
| 1028 | case e_ltsel: |
| 1029 | final_type = R_PARISC_DLTREL21L; |
| 1030 | break; |
| 1031 | case e_lpsel: |
| 1032 | final_type = R_PARISC_PLABEL21L; |
| 1033 | break; |
| 1034 | default: |
| 1035 | return NULL; |
| 1036 | } |
| 1037 | break; |
| 1038 | |
| 1039 | case 32: |
| 1040 | switch (field) |
| 1041 | { |
| 1042 | case e_fsel: |
| 1043 | final_type = R_PARISC_DIR32; |
| 1044 | break; |
| 1045 | case e_psel: |
| 1046 | final_type = R_PARISC_PLABEL32; |
| 1047 | break; |
| 1048 | default: |
| 1049 | return NULL; |
| 1050 | } |
| 1051 | break; |
| 1052 | |
| 1053 | default: |
| 1054 | return NULL; |
| 1055 | } |
| 1056 | break; |
| 1057 | |
| 1058 | |
| 1059 | case R_HPPA_GOTOFF: |
| 1060 | switch (format) |
| 1061 | { |
| 1062 | case 14: |
| 1063 | switch (field) |
| 1064 | { |
| 1065 | case e_rsel: |
| 1066 | case e_rrsel: |
| 1067 | final_type = R_PARISC_DPREL14R; |
| 1068 | break; |
| 1069 | case e_fsel: |
| 1070 | final_type = R_PARISC_DPREL14F; |
| 1071 | break; |
| 1072 | default: |
| 1073 | return NULL; |
| 1074 | } |
| 1075 | break; |
| 1076 | |
| 1077 | case 21: |
| 1078 | switch (field) |
| 1079 | { |
| 1080 | case e_lrsel: |
| 1081 | case e_lsel: |
| 1082 | final_type = R_PARISC_DPREL21L; |
| 1083 | break; |
| 1084 | default: |
| 1085 | return NULL; |
| 1086 | } |
| 1087 | break; |
| 1088 | |
| 1089 | default: |
| 1090 | return NULL; |
| 1091 | } |
| 1092 | break; |
| 1093 | |
| 1094 | |
| 1095 | case R_HPPA_PCREL_CALL: |
| 1096 | switch (format) |
| 1097 | { |
| 1098 | case 14: |
| 1099 | switch (field) |
| 1100 | { |
| 1101 | case e_rsel: |
| 1102 | case e_rrsel: |
| 1103 | final_type = R_PARISC_PCREL14R; |
| 1104 | break; |
| 1105 | case e_fsel: |
| 1106 | final_type = R_PARISC_PCREL14F; |
| 1107 | break; |
| 1108 | default: |
| 1109 | return NULL; |
| 1110 | } |
| 1111 | break; |
| 1112 | |
| 1113 | case 17: |
| 1114 | switch (field) |
| 1115 | { |
| 1116 | case e_rsel: |
| 1117 | case e_rrsel: |
| 1118 | final_type = R_PARISC_PCREL17R; |
| 1119 | break; |
| 1120 | case e_fsel: |
| 1121 | final_type = R_PARISC_PCREL17F; |
| 1122 | break; |
| 1123 | default: |
| 1124 | return NULL; |
| 1125 | } |
| 1126 | break; |
| 1127 | |
| 1128 | case 21: |
| 1129 | switch (field) |
| 1130 | { |
| 1131 | case e_lsel: |
| 1132 | case e_lrsel: |
| 1133 | final_type = R_PARISC_PCREL21L; |
| 1134 | break; |
| 1135 | default: |
| 1136 | return NULL; |
| 1137 | } |
| 1138 | break; |
| 1139 | |
| 1140 | default: |
| 1141 | return NULL; |
| 1142 | } |
| 1143 | break; |
| 1144 | |
| 1145 | default: |
| 1146 | return NULL; |
| 1147 | } |
| 1148 | |
| 1149 | return final_types; |
| 1150 | } |
| 1151 | |
| 1152 | #undef final_type |
| 1153 | |
| 1154 | /* Set the contents of a particular section at a particular location. */ |
| 1155 | |
| 1156 | static boolean |
| 1157 | elf32_hppa_set_section_contents (abfd, section, location, offset, count) |
| 1158 | bfd *abfd; |
| 1159 | sec_ptr section; |
| 1160 | PTR location; |
| 1161 | file_ptr offset; |
| 1162 | bfd_size_type count; |
| 1163 | { |
| 1164 | /* Ignore write requests for the symbol extension section until we've |
| 1165 | had the chance to rebuild it ourselves. */ |
| 1166 | if (!strcmp (section->name, ".PARISC.symextn") && !symext_chain_size) |
| 1167 | return true; |
| 1168 | else |
| 1169 | return _bfd_elf_set_section_contents (abfd, section, location, |
| 1170 | offset, count); |
| 1171 | } |
| 1172 | |
| 1173 | /* Translate from an elf into field into a howto relocation pointer. */ |
| 1174 | |
| 1175 | static void |
| 1176 | elf32_hppa_info_to_howto (abfd, cache_ptr, dst) |
| 1177 | bfd *abfd; |
| 1178 | arelent *cache_ptr; |
| 1179 | Elf32_Internal_Rela *dst; |
| 1180 | { |
| 1181 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_PARISC_UNIMPLEMENTED); |
| 1182 | cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)]; |
| 1183 | } |
| 1184 | |
| 1185 | |
| 1186 | /* Actually perform a relocation. NOTE this is (mostly) superceeded |
| 1187 | by elf32_hppa_bfd_final_link_relocate which is called by the new |
| 1188 | fast linker. */ |
| 1189 | |
| 1190 | static bfd_reloc_status_type |
| 1191 | hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 1192 | error_message) |
| 1193 | bfd *abfd; |
| 1194 | arelent *reloc_entry; |
| 1195 | asymbol *symbol_in; |
| 1196 | PTR data; |
| 1197 | asection *input_section; |
| 1198 | bfd *output_bfd; |
| 1199 | char **error_message; |
| 1200 | { |
| 1201 | /* It is no longer valid to call hppa_elf_reloc when creating |
| 1202 | a final executable. */ |
| 1203 | if (output_bfd) |
| 1204 | { |
| 1205 | reloc_entry->address += input_section->output_offset; |
| 1206 | |
| 1207 | /* Work around lossage in generic elf code to write relocations. |
| 1208 | (maps different section symbols into the same symbol index). */ |
| 1209 | if ((symbol_in->flags & BSF_SECTION_SYM) |
| 1210 | && symbol_in->section) |
| 1211 | reloc_entry->addend += symbol_in->section->output_offset; |
| 1212 | return bfd_reloc_ok; |
| 1213 | } |
| 1214 | else |
| 1215 | { |
| 1216 | *error_message = (char *) "Unsupported call to hppa_elf_reloc"; |
| 1217 | return bfd_reloc_notsupported; |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | /* Actually perform a relocation as part of a final link. This can get |
| 1222 | rather hairy when linker stubs are needed. */ |
| 1223 | |
| 1224 | static bfd_reloc_status_type |
| 1225 | elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, |
| 1226 | input_section, contents, offset, value, |
| 1227 | addend, info, sym_sec, sym_name, is_local) |
| 1228 | reloc_howto_type *howto; |
| 1229 | bfd *input_bfd; |
| 1230 | bfd *output_bfd; |
| 1231 | asection *input_section; |
| 1232 | bfd_byte *contents; |
| 1233 | bfd_vma offset; |
| 1234 | bfd_vma value; |
| 1235 | bfd_vma addend; |
| 1236 | struct bfd_link_info *info; |
| 1237 | asection *sym_sec; |
| 1238 | const char *sym_name; |
| 1239 | int is_local; |
| 1240 | { |
| 1241 | unsigned long insn; |
| 1242 | unsigned long r_type = howto->type; |
| 1243 | unsigned long r_format = howto->bitsize; |
| 1244 | unsigned long r_field = e_fsel; |
| 1245 | bfd_byte *hit_data = contents + offset; |
| 1246 | boolean r_pcrel = howto->pc_relative; |
| 1247 | |
| 1248 | insn = bfd_get_32 (input_bfd, hit_data); |
| 1249 | |
| 1250 | /* Make sure we have a value for $global$. FIXME isn't this effectively |
| 1251 | just like the gp pointer on MIPS? Can we use those routines for this |
| 1252 | purpose? */ |
| 1253 | if (!elf32_hppa_hash_table (info)->global_sym_defined) |
| 1254 | { |
| 1255 | struct elf_link_hash_entry *h; |
| 1256 | asection *sec; |
| 1257 | |
| 1258 | h = elf_link_hash_lookup (elf_hash_table (info), "$global$", false, |
| 1259 | false, false); |
| 1260 | |
| 1261 | /* If there isn't a $global$, then we're in deep trouble. */ |
| 1262 | if (h == NULL) |
| 1263 | return bfd_reloc_notsupported; |
| 1264 | |
| 1265 | /* If $global$ isn't a defined symbol, then we're still in deep |
| 1266 | trouble. */ |
| 1267 | if (h->root.type != bfd_link_hash_defined) |
| 1268 | return bfd_reloc_undefined; |
| 1269 | |
| 1270 | sec = h->root.u.def.section; |
| 1271 | elf32_hppa_hash_table (info)->global_value = (h->root.u.def.value |
| 1272 | + sec->output_section->vma |
| 1273 | + sec->output_offset); |
| 1274 | elf32_hppa_hash_table (info)->global_sym_defined = 1; |
| 1275 | } |
| 1276 | |
| 1277 | switch (r_type) |
| 1278 | { |
| 1279 | case R_PARISC_NONE: |
| 1280 | break; |
| 1281 | |
| 1282 | case R_PARISC_DIR32: |
| 1283 | case R_PARISC_DIR17F: |
| 1284 | case R_PARISC_PCREL17C: |
| 1285 | r_field = e_fsel; |
| 1286 | goto do_basic_type_1; |
| 1287 | case R_PARISC_DIR21L: |
| 1288 | case R_PARISC_PCREL21L: |
| 1289 | r_field = e_lrsel; |
| 1290 | goto do_basic_type_1; |
| 1291 | case R_PARISC_DIR17R: |
| 1292 | case R_PARISC_PCREL17R: |
| 1293 | case R_PARISC_DIR14R: |
| 1294 | case R_PARISC_PCREL14R: |
| 1295 | r_field = e_rrsel; |
| 1296 | goto do_basic_type_1; |
| 1297 | |
| 1298 | /* For all the DP relative relocations, we need to examine the symbol's |
| 1299 | section. If it's a code section, then "data pointer relative" makes |
| 1300 | no sense. In that case we don't adjust the "value", and for 21 bit |
| 1301 | addil instructions, we change the source addend register from %dp to |
| 1302 | %r0. */ |
| 1303 | case R_PARISC_DPREL21L: |
| 1304 | r_field = e_lrsel; |
| 1305 | if (sym_sec->flags & SEC_CODE) |
| 1306 | { |
| 1307 | if ((insn & 0xfc000000) >> 26 == 0xa |
| 1308 | && (insn & 0x03e00000) >> 21 == 0x1b) |
| 1309 | insn &= ~0x03e00000; |
| 1310 | } |
| 1311 | else |
| 1312 | value -= elf32_hppa_hash_table (info)->global_value; |
| 1313 | goto do_basic_type_1; |
| 1314 | case R_PARISC_DPREL14R: |
| 1315 | r_field = e_rrsel; |
| 1316 | if ((sym_sec->flags & SEC_CODE) == 0) |
| 1317 | value -= elf32_hppa_hash_table (info)->global_value; |
| 1318 | goto do_basic_type_1; |
| 1319 | case R_PARISC_DPREL14F: |
| 1320 | r_field = e_fsel; |
| 1321 | if ((sym_sec->flags & SEC_CODE) == 0) |
| 1322 | value -= elf32_hppa_hash_table (info)->global_value; |
| 1323 | goto do_basic_type_1; |
| 1324 | |
| 1325 | /* These cases are separate as they may involve a lot more work |
| 1326 | to deal with linker stubs. */ |
| 1327 | case R_PARISC_PLABEL32: |
| 1328 | case R_PARISC_PLABEL21L: |
| 1329 | case R_PARISC_PLABEL14R: |
| 1330 | case R_PARISC_PCREL17F: |
| 1331 | { |
| 1332 | bfd_vma location; |
| 1333 | unsigned int len, caller_args, callee_args; |
| 1334 | arg_reloc_type arg_reloc_types[5]; |
| 1335 | struct elf32_hppa_args_hash_table *args_hash_table; |
| 1336 | struct elf32_hppa_args_hash_entry *args_hash; |
| 1337 | char *new_name, *stub_name; |
| 1338 | |
| 1339 | /* Get the field selector right. We'll need it in a minute. */ |
| 1340 | if (r_type == R_PARISC_PCREL17F |
| 1341 | || r_type == R_PARISC_PLABEL32) |
| 1342 | r_field = e_fsel; |
| 1343 | else if (r_type == R_PARISC_PLABEL21L) |
| 1344 | r_field = e_lrsel; |
| 1345 | else if (r_type == R_PARISC_PLABEL14R) |
| 1346 | r_field = e_rrsel; |
| 1347 | |
| 1348 | /* Find out where we are and where we're going. */ |
| 1349 | location = (offset + |
| 1350 | input_section->output_offset + |
| 1351 | input_section->output_section->vma); |
| 1352 | |
| 1353 | /* Now look for the argument relocation bits associated with the |
| 1354 | target. */ |
| 1355 | len = strlen (sym_name) + 1; |
| 1356 | if (is_local) |
| 1357 | len += 9; |
| 1358 | new_name = bfd_malloc (len); |
| 1359 | if (!new_name) |
| 1360 | return bfd_reloc_notsupported; |
| 1361 | strcpy (new_name, sym_name); |
| 1362 | |
| 1363 | /* Local symbols have unique IDs. */ |
| 1364 | if (is_local) |
| 1365 | sprintf (new_name + len - 10, "_%08x", (int)sym_sec); |
| 1366 | |
| 1367 | args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; |
| 1368 | |
| 1369 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| 1370 | new_name, false, false); |
| 1371 | if (args_hash == NULL) |
| 1372 | callee_args = 0; |
| 1373 | else |
| 1374 | callee_args = args_hash->arg_bits; |
| 1375 | |
| 1376 | /* If this is a CALL relocation, then get the caller's bits |
| 1377 | from the addend. Else use the magic 0x155 value for PLABELS. |
| 1378 | |
| 1379 | Also we don't care about the destination (value) for PLABELS. */ |
| 1380 | if (r_type == R_PARISC_PCREL17F) |
| 1381 | caller_args = HPPA_R_ARG_RELOC (addend); |
| 1382 | else |
| 1383 | { |
| 1384 | caller_args = 0x155; |
| 1385 | location = value; |
| 1386 | } |
| 1387 | |
| 1388 | /* Any kind of linker stub needed? */ |
| 1389 | if (((int)(value - location) > 0x3ffff) |
| 1390 | || ((int)(value - location) < (int)0xfffc0000) |
| 1391 | || elf32_hppa_arg_reloc_needed (caller_args, callee_args, |
| 1392 | arg_reloc_types)) |
| 1393 | { |
| 1394 | struct elf32_hppa_stub_hash_table *stub_hash_table; |
| 1395 | struct elf32_hppa_stub_hash_entry *stub_hash; |
| 1396 | asection *stub_section; |
| 1397 | |
| 1398 | /* Build a name for the stub. */ |
| 1399 | |
| 1400 | len = strlen (new_name); |
| 1401 | len += 23; |
| 1402 | stub_name = bfd_malloc (len); |
| 1403 | if (!stub_name) |
| 1404 | return bfd_reloc_notsupported; |
| 1405 | elf32_hppa_name_of_stub (caller_args, callee_args, |
| 1406 | location, value, stub_name); |
| 1407 | strcat (stub_name, new_name); |
| 1408 | free (new_name); |
| 1409 | |
| 1410 | stub_hash_table = elf32_hppa_hash_table (info)->stub_hash_table; |
| 1411 | |
| 1412 | stub_hash |
| 1413 | = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, |
| 1414 | false, false); |
| 1415 | |
| 1416 | /* We're done with that name. */ |
| 1417 | free (stub_name); |
| 1418 | |
| 1419 | /* The stub BFD only has one section. */ |
| 1420 | stub_section = stub_hash_table->stub_bfd->sections; |
| 1421 | |
| 1422 | if (stub_hash != NULL) |
| 1423 | { |
| 1424 | |
| 1425 | if (r_type == R_PARISC_PCREL17F) |
| 1426 | { |
| 1427 | unsigned long delay_insn; |
| 1428 | unsigned int opcode, rtn_reg, ldo_target_reg, ldo_src_reg; |
| 1429 | |
| 1430 | /* We'll need to peek at the next insn. */ |
| 1431 | delay_insn = bfd_get_32 (input_bfd, hit_data + 4); |
| 1432 | opcode = get_opcode (delay_insn); |
| 1433 | |
| 1434 | /* We also need to know the return register for this |
| 1435 | call. */ |
| 1436 | rtn_reg = (insn & 0x03e00000) >> 21; |
| 1437 | |
| 1438 | ldo_src_reg = (delay_insn & 0x03e00000) >> 21; |
| 1439 | ldo_target_reg = (delay_insn & 0x001f0000) >> 16; |
| 1440 | |
| 1441 | /* Munge up the value and other parameters for |
| 1442 | hppa_elf_relocate_insn. */ |
| 1443 | |
| 1444 | value = (stub_hash->offset |
| 1445 | + stub_section->output_offset |
| 1446 | + stub_section->output_section->vma); |
| 1447 | |
| 1448 | r_format = 17; |
| 1449 | r_field = e_fsel; |
| 1450 | r_pcrel = 0; |
| 1451 | addend = 0; |
| 1452 | |
| 1453 | /* We need to peek at the delay insn and determine if |
| 1454 | we'll need to swap the branch and its delay insn. */ |
| 1455 | if ((insn & 2) |
| 1456 | || (opcode == LDO |
| 1457 | && ldo_target_reg == rtn_reg) |
| 1458 | || (delay_insn == 0x08000240)) |
| 1459 | { |
| 1460 | /* No need to swap the branch and its delay slot, but |
| 1461 | we do need to make sure to jump past the return |
| 1462 | pointer update in the stub. */ |
| 1463 | value += 4; |
| 1464 | |
| 1465 | /* If the delay insn does a return pointer adjustment, |
| 1466 | then we have to make sure it stays valid. */ |
| 1467 | if (opcode == LDO |
| 1468 | && ldo_target_reg == rtn_reg) |
| 1469 | { |
| 1470 | delay_insn &= 0xfc00ffff; |
| 1471 | delay_insn |= ((31 << 21) | (31 << 16)); |
| 1472 | bfd_put_32 (input_bfd, delay_insn, hit_data + 4); |
| 1473 | } |
| 1474 | /* Use a BLE to reach the stub. */ |
| 1475 | insn = BLE_SR4_R0; |
| 1476 | } |
| 1477 | else |
| 1478 | { |
| 1479 | /* Wonderful, we have to swap the call insn and its |
| 1480 | delay slot. */ |
| 1481 | bfd_put_32 (input_bfd, delay_insn, hit_data); |
| 1482 | /* Use a BLE,n to reach the stub. */ |
| 1483 | insn = (BLE_SR4_R0 | 0x2); |
| 1484 | bfd_put_32 (input_bfd, insn, hit_data + 4); |
| 1485 | insn = hppa_elf_relocate_insn (input_bfd, |
| 1486 | input_section, |
| 1487 | insn, offset + 4, |
| 1488 | value, addend, |
| 1489 | r_format, r_field, |
| 1490 | r_pcrel); |
| 1491 | /* Update the instruction word. */ |
| 1492 | bfd_put_32 (input_bfd, insn, hit_data + 4); |
| 1493 | return bfd_reloc_dangerous; |
| 1494 | } |
| 1495 | } |
| 1496 | else |
| 1497 | { |
| 1498 | /* PLABEL stuff is easy. */ |
| 1499 | |
| 1500 | value = (stub_hash->offset |
| 1501 | + stub_section->output_offset |
| 1502 | + stub_section->output_section->vma); |
| 1503 | /* We don't need the RP adjustment for PLABELs. */ |
| 1504 | value += 4; |
| 1505 | if (r_type == R_PARISC_PLABEL32) |
| 1506 | r_format = 32; |
| 1507 | else if (r_type == R_PARISC_PLABEL21L) |
| 1508 | r_format = 21; |
| 1509 | else if (r_type == R_PARISC_PLABEL14R) |
| 1510 | r_format = 14; |
| 1511 | |
| 1512 | r_pcrel = 0; |
| 1513 | addend = 0; |
| 1514 | } |
| 1515 | } |
| 1516 | else |
| 1517 | return bfd_reloc_notsupported; |
| 1518 | } |
| 1519 | goto do_basic_type_1; |
| 1520 | } |
| 1521 | |
| 1522 | do_basic_type_1: |
| 1523 | insn = hppa_elf_relocate_insn (input_bfd, input_section, insn, |
| 1524 | offset, value, addend, r_format, |
| 1525 | r_field, r_pcrel); |
| 1526 | break; |
| 1527 | |
| 1528 | /* Something we don't know how to handle. */ |
| 1529 | default: |
| 1530 | return bfd_reloc_notsupported; |
| 1531 | } |
| 1532 | |
| 1533 | /* Update the instruction word. */ |
| 1534 | bfd_put_32 (input_bfd, insn, hit_data); |
| 1535 | return (bfd_reloc_ok); |
| 1536 | } |
| 1537 | |
| 1538 | /* Return the address of the howto table entry to perform the CODE |
| 1539 | relocation for an ARCH machine. */ |
| 1540 | |
| 1541 | static reloc_howto_type * |
| 1542 | elf_hppa_reloc_type_lookup (abfd, code) |
| 1543 | bfd *abfd; |
| 1544 | bfd_reloc_code_real_type code; |
| 1545 | { |
| 1546 | if ((int) code < (int) R_PARISC_UNIMPLEMENTED) |
| 1547 | { |
| 1548 | BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code); |
| 1549 | return &elf_hppa_howto_table[(int) code]; |
| 1550 | } |
| 1551 | return NULL; |
| 1552 | } |
| 1553 | |
| 1554 | /* Return true if SYM represents a local label symbol. */ |
| 1555 | |
| 1556 | static boolean |
| 1557 | hppa_elf_is_local_label_name (abfd, name) |
| 1558 | bfd *abfd; |
| 1559 | const char *name; |
| 1560 | { |
| 1561 | return (name[0] == 'L' && name[1] == '$'); |
| 1562 | } |
| 1563 | |
| 1564 | /* Do any backend specific processing when beginning to write an object |
| 1565 | file. For PA ELF we need to determine the size of the symbol extension |
| 1566 | section *before* any other output processing happens. */ |
| 1567 | |
| 1568 | static void |
| 1569 | elf32_hppa_backend_begin_write_processing (abfd, info) |
| 1570 | bfd *abfd; |
| 1571 | struct bfd_link_info *info; |
| 1572 | { |
| 1573 | unsigned int i; |
| 1574 | asection *symextn_sec; |
| 1575 | |
| 1576 | /* Size up the symbol extension section. */ |
| 1577 | if ((abfd->outsymbols == NULL |
| 1578 | && info == NULL) |
| 1579 | || symext_chain_size != 0) |
| 1580 | return; |
| 1581 | |
| 1582 | if (info == NULL) |
| 1583 | { |
| 1584 | /* We were not called from the BFD ELF linker code, so we need |
| 1585 | to examine the output BFD's outsymbols. |
| 1586 | |
| 1587 | Note we can not build the symbol extensions now as the symbol |
| 1588 | map hasn't been set up. */ |
| 1589 | for (i = 0; i < abfd->symcount; i++) |
| 1590 | { |
| 1591 | elf_symbol_type *symbol = (elf_symbol_type *)abfd->outsymbols[i]; |
| 1592 | |
| 1593 | /* Only functions ever need an entry in the symbol extension |
| 1594 | section. */ |
| 1595 | if (!(symbol->symbol.flags & BSF_FUNCTION)) |
| 1596 | continue; |
| 1597 | |
| 1598 | /* And only if they specify the locations of their arguments. */ |
| 1599 | if (symbol->tc_data.hppa_arg_reloc == 0) |
| 1600 | continue; |
| 1601 | |
| 1602 | /* Yup. This function symbol needs an entry. */ |
| 1603 | symext_chain_size += 2 * ELF32_PARISC_SX_SIZE; |
| 1604 | } |
| 1605 | } |
| 1606 | else if (info->relocateable == true) |
| 1607 | { |
| 1608 | struct elf32_hppa_args_hash_table *table; |
| 1609 | table = elf32_hppa_hash_table (info)->args_hash_table; |
| 1610 | |
| 1611 | /* Determine the size of the symbol extension section. */ |
| 1612 | elf32_hppa_args_hash_traverse (table, |
| 1613 | elf32_hppa_size_symext, |
| 1614 | &symext_chain_size); |
| 1615 | } |
| 1616 | |
| 1617 | /* Now create the section and set its size. We'll fill in the |
| 1618 | contents later. */ |
| 1619 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| 1620 | if (symextn_sec == NULL) |
| 1621 | symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME); |
| 1622 | |
| 1623 | bfd_set_section_flags (abfd, symextn_sec, |
| 1624 | SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA); |
| 1625 | symextn_sec->output_section = symextn_sec; |
| 1626 | symextn_sec->output_offset = 0; |
| 1627 | bfd_set_section_alignment (abfd, symextn_sec, 2); |
| 1628 | bfd_set_section_size (abfd, symextn_sec, symext_chain_size); |
| 1629 | } |
| 1630 | |
| 1631 | /* Called for each entry in the args location hash table. For each |
| 1632 | entry we bump the size pointer by 2 records (16 bytes). */ |
| 1633 | |
| 1634 | static boolean |
| 1635 | elf32_hppa_size_symext (gen_entry, in_args) |
| 1636 | struct bfd_hash_entry *gen_entry; |
| 1637 | PTR in_args; |
| 1638 | { |
| 1639 | bfd_size_type *sizep = (bfd_size_type *)in_args; |
| 1640 | |
| 1641 | *sizep += 2 * ELF32_PARISC_SX_SIZE; |
| 1642 | return true; |
| 1643 | } |
| 1644 | |
| 1645 | /* Backend routine called by the linker for each output symbol. |
| 1646 | |
| 1647 | For PA ELF we use this opportunity to add an appropriate entry |
| 1648 | to the symbol extension chain for function symbols. */ |
| 1649 | |
| 1650 | static boolean |
| 1651 | elf32_hppa_link_output_symbol_hook (abfd, info, name, sym, section) |
| 1652 | bfd *abfd; |
| 1653 | struct bfd_link_info *info; |
| 1654 | const char *name; |
| 1655 | Elf_Internal_Sym *sym; |
| 1656 | asection *section; |
| 1657 | { |
| 1658 | char *new_name; |
| 1659 | unsigned int len, index; |
| 1660 | struct elf32_hppa_args_hash_table *args_hash_table; |
| 1661 | struct elf32_hppa_args_hash_entry *args_hash; |
| 1662 | |
| 1663 | /* If the args hash table is NULL, then we've encountered an error |
| 1664 | of some sorts (for example, an undefined symbol). In that case |
| 1665 | we've got nothing else to do. |
| 1666 | |
| 1667 | NOTE: elf_link_output_symbol will abort if we return false here! */ |
| 1668 | if (elf32_hppa_hash_table (info)->args_hash_table == NULL) |
| 1669 | return true; |
| 1670 | |
| 1671 | index = elf32_hppa_hash_table (info)->output_symbol_count++; |
| 1672 | |
| 1673 | /* We need to look up this symbol in the args hash table to see if |
| 1674 | it has argument relocation bits. */ |
| 1675 | if (ELF_ST_TYPE (sym->st_info) != STT_FUNC) |
| 1676 | return true; |
| 1677 | |
| 1678 | /* We know it's a function symbol of some kind. */ |
| 1679 | len = strlen (name) + 1; |
| 1680 | if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) |
| 1681 | len += 9; |
| 1682 | |
| 1683 | new_name = bfd_malloc (len); |
| 1684 | if (new_name == NULL) |
| 1685 | return false; |
| 1686 | |
| 1687 | strcpy (new_name, name); |
| 1688 | if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) |
| 1689 | sprintf (new_name + len - 10, "_%08x", (int)section); |
| 1690 | |
| 1691 | /* Now that we have the unique name, we can look it up in the |
| 1692 | args hash table. */ |
| 1693 | args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; |
| 1694 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, new_name, |
| 1695 | false, false); |
| 1696 | free (new_name); |
| 1697 | if (args_hash == NULL) |
| 1698 | return true; |
| 1699 | |
| 1700 | /* We know this symbol has arg reloc bits. */ |
| 1701 | add_entry_to_symext_chain (abfd, args_hash->arg_bits, |
| 1702 | index, &symext_rootP, &symext_lastP); |
| 1703 | return true; |
| 1704 | } |
| 1705 | |
| 1706 | /* Perform any processing needed late in the object file writing process. |
| 1707 | For PA ELF we build and set the contents of the symbol extension |
| 1708 | section. */ |
| 1709 | |
| 1710 | static void |
| 1711 | elf32_hppa_backend_final_write_processing (abfd, linker) |
| 1712 | bfd *abfd; |
| 1713 | boolean linker; |
| 1714 | { |
| 1715 | asection *symextn_sec; |
| 1716 | unsigned int i; |
| 1717 | |
| 1718 | /* Now build the symbol extension section. */ |
| 1719 | if (symext_chain_size == 0) |
| 1720 | return; |
| 1721 | |
| 1722 | if (! linker) |
| 1723 | { |
| 1724 | /* We were not called from the backend linker, so we still need |
| 1725 | to build the symbol extension chain. |
| 1726 | |
| 1727 | Look at each symbol, adding the appropriate information to the |
| 1728 | symbol extension section list as necessary. */ |
| 1729 | for (i = 0; i < abfd->symcount; i++) |
| 1730 | { |
| 1731 | elf_symbol_type *symbol = (elf_symbol_type *) abfd->outsymbols[i]; |
| 1732 | |
| 1733 | /* Only functions ever need an entry in the symbol extension |
| 1734 | section. */ |
| 1735 | if (!(symbol->symbol.flags & BSF_FUNCTION)) |
| 1736 | continue; |
| 1737 | |
| 1738 | /* And only if they specify the locations of their arguments. */ |
| 1739 | if (symbol->tc_data.hppa_arg_reloc == 0) |
| 1740 | continue; |
| 1741 | |
| 1742 | /* Add this symbol's information to the chain. */ |
| 1743 | add_entry_to_symext_chain (abfd, symbol->tc_data.hppa_arg_reloc, |
| 1744 | symbol->symbol.udata.i, &symext_rootP, |
| 1745 | &symext_lastP); |
| 1746 | } |
| 1747 | } |
| 1748 | |
| 1749 | /* Now fill in the contents of the symbol extension section. */ |
| 1750 | elf_hppa_tc_make_sections (abfd, symext_rootP); |
| 1751 | |
| 1752 | /* And attach that as the section's contents. */ |
| 1753 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| 1754 | if (symextn_sec == (asection *) 0) |
| 1755 | abort(); |
| 1756 | |
| 1757 | symextn_sec->contents = (void *)symextn_contents; |
| 1758 | |
| 1759 | bfd_set_section_contents (abfd, symextn_sec, symextn_sec->contents, |
| 1760 | symextn_sec->output_offset, symextn_sec->_raw_size); |
| 1761 | } |
| 1762 | |
| 1763 | /* Update the symbol extention chain to include the symbol pointed to |
| 1764 | by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */ |
| 1765 | |
| 1766 | static void |
| 1767 | add_entry_to_symext_chain (abfd, arg_reloc, sym_idx, symext_root, symext_last) |
| 1768 | bfd *abfd; |
| 1769 | unsigned int arg_reloc; |
| 1770 | unsigned int sym_idx; |
| 1771 | symext_chainS **symext_root; |
| 1772 | symext_chainS **symext_last; |
| 1773 | { |
| 1774 | symext_chainS *symextP; |
| 1775 | |
| 1776 | /* Allocate memory and initialize this entry. */ |
| 1777 | symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2); |
| 1778 | if (!symextP) |
| 1779 | abort(); /* FIXME */ |
| 1780 | |
| 1781 | symextP[0].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_SYMNDX, sym_idx); |
| 1782 | symextP[0].next = &symextP[1]; |
| 1783 | |
| 1784 | symextP[1].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_ARG_RELOC, arg_reloc); |
| 1785 | symextP[1].next = NULL; |
| 1786 | |
| 1787 | /* Now update the chain itself so it can be walked later to build |
| 1788 | the symbol extension section. */ |
| 1789 | if (*symext_root == NULL) |
| 1790 | { |
| 1791 | *symext_root = &symextP[0]; |
| 1792 | *symext_last = &symextP[1]; |
| 1793 | } |
| 1794 | else |
| 1795 | { |
| 1796 | (*symext_last)->next = &symextP[0]; |
| 1797 | *symext_last = &symextP[1]; |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | /* Build the symbol extension section. */ |
| 1802 | |
| 1803 | static void |
| 1804 | elf_hppa_tc_make_sections (abfd, symext_root) |
| 1805 | bfd *abfd; |
| 1806 | symext_chainS *symext_root; |
| 1807 | { |
| 1808 | symext_chainS *symextP; |
| 1809 | unsigned int i; |
| 1810 | asection *symextn_sec; |
| 1811 | |
| 1812 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| 1813 | |
| 1814 | /* Grab some memory for the contents of the symbol extension section |
| 1815 | itself. */ |
| 1816 | symextn_contents = (bfd_byte *) bfd_zalloc (abfd, |
| 1817 | symextn_sec->_raw_size); |
| 1818 | if (!symextn_contents) |
| 1819 | abort(); /* FIXME */ |
| 1820 | |
| 1821 | /* Fill in the contents of the symbol extension chain. */ |
| 1822 | for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i) |
| 1823 | ELF32_PARISC_SX_PUT (abfd, (bfd_vma) symextP->entry, |
| 1824 | symextn_contents + i * ELF32_PARISC_SX_SIZE); |
| 1825 | |
| 1826 | return; |
| 1827 | } |
| 1828 | |
| 1829 | /* Do some PA ELF specific work after reading in the symbol table. |
| 1830 | In particular attach the argument relocation from the |
| 1831 | symbol extension section to the appropriate symbols. */ |
| 1832 | |
| 1833 | static boolean |
| 1834 | elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt) |
| 1835 | bfd *abfd; |
| 1836 | elf_symbol_type *esyms; |
| 1837 | unsigned int symcnt; |
| 1838 | { |
| 1839 | Elf32_Internal_Shdr *symextn_hdr = |
| 1840 | bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME); |
| 1841 | unsigned int i, current_sym_idx = 0; |
| 1842 | |
| 1843 | /* If no symbol extension existed, then all symbol extension information |
| 1844 | is assumed to be zero. */ |
| 1845 | if (symextn_hdr == NULL) |
| 1846 | { |
| 1847 | for (i = 0; i < symcnt; i++) |
| 1848 | esyms[i].tc_data.hppa_arg_reloc = 0; |
| 1849 | return (true); |
| 1850 | } |
| 1851 | |
| 1852 | /* FIXME: Why not use bfd_get_section_contents here? Also should give |
| 1853 | memory back when we're done. */ |
| 1854 | /* Allocate a buffer of the appropriate size for the symextn section. */ |
| 1855 | symextn_hdr->contents = bfd_zalloc(abfd,symextn_hdr->sh_size); |
| 1856 | if (!symextn_hdr->contents) |
| 1857 | return false; |
| 1858 | |
| 1859 | /* Read in the symextn section. */ |
| 1860 | if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1) |
| 1861 | return false; |
| 1862 | if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->sh_size, abfd) |
| 1863 | != symextn_hdr->sh_size) |
| 1864 | return false; |
| 1865 | |
| 1866 | /* Parse entries in the symbol extension section, updating the symtab |
| 1867 | entries as we go */ |
| 1868 | for (i = 0; i < symextn_hdr->sh_size / ELF32_PARISC_SX_SIZE; i++) |
| 1869 | { |
| 1870 | symext_entryS se = |
| 1871 | ELF32_PARISC_SX_GET (abfd, |
| 1872 | ((unsigned char *)symextn_hdr->contents |
| 1873 | + i * ELF32_PARISC_SX_SIZE)); |
| 1874 | unsigned int se_value = ELF32_PARISC_SX_VAL (se); |
| 1875 | unsigned int se_type = ELF32_PARISC_SX_TYPE (se); |
| 1876 | |
| 1877 | switch (se_type) |
| 1878 | { |
| 1879 | case PARISC_SXT_NULL: |
| 1880 | break; |
| 1881 | |
| 1882 | case PARISC_SXT_SYMNDX: |
| 1883 | if (se_value >= symcnt) |
| 1884 | { |
| 1885 | bfd_set_error (bfd_error_bad_value); |
| 1886 | return (false); |
| 1887 | } |
| 1888 | current_sym_idx = se_value - 1; |
| 1889 | break; |
| 1890 | |
| 1891 | case PARISC_SXT_ARG_RELOC: |
| 1892 | esyms[current_sym_idx].tc_data.hppa_arg_reloc = se_value; |
| 1893 | break; |
| 1894 | |
| 1895 | default: |
| 1896 | bfd_set_error (bfd_error_bad_value); |
| 1897 | return (false); |
| 1898 | } |
| 1899 | } |
| 1900 | return (true); |
| 1901 | } |
| 1902 | |
| 1903 | /* Read and attach the symbol extension information for the symbols |
| 1904 | in INPUT_BFD to the argument location hash table. Handle locals |
| 1905 | if DO_LOCALS is true; likewise for globals when DO_GLOBALS is true. */ |
| 1906 | |
| 1907 | static boolean |
| 1908 | elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, local_syms) |
| 1909 | bfd *input_bfd; |
| 1910 | Elf_Internal_Shdr *symtab_hdr; |
| 1911 | struct elf32_hppa_args_hash_table *args_hash_table; |
| 1912 | Elf_Internal_Sym *local_syms; |
| 1913 | { |
| 1914 | asection *symextn_sec; |
| 1915 | bfd_byte *contents; |
| 1916 | unsigned int i, n_entries, current_index = 0; |
| 1917 | |
| 1918 | /* Get the symbol extension section for this BFD. If no section exists |
| 1919 | then there's nothing to do. Likewise if the section exists, but |
| 1920 | has no contents. */ |
| 1921 | symextn_sec = bfd_get_section_by_name (input_bfd, SYMEXTN_SECTION_NAME); |
| 1922 | if (symextn_sec == NULL) |
| 1923 | return true; |
| 1924 | |
| 1925 | /* Done separately so we can turn off SEC_HAS_CONTENTS (see below). */ |
| 1926 | if (symextn_sec->_raw_size == 0) |
| 1927 | { |
| 1928 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| 1929 | return true; |
| 1930 | } |
| 1931 | |
| 1932 | contents = (bfd_byte *) bfd_malloc ((size_t) symextn_sec->_raw_size); |
| 1933 | if (contents == NULL) |
| 1934 | return false; |
| 1935 | |
| 1936 | /* How gross. We turn off SEC_HAS_CONTENTS for the input symbol extension |
| 1937 | sections to keep the generic ELF/BFD code from trying to do anything |
| 1938 | with them. We have to undo that hack temporarily so that we can read |
| 1939 | in the contents with the generic code. */ |
| 1940 | symextn_sec->flags |= SEC_HAS_CONTENTS; |
| 1941 | if (bfd_get_section_contents (input_bfd, symextn_sec, contents, |
| 1942 | 0, symextn_sec->_raw_size) == false) |
| 1943 | { |
| 1944 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| 1945 | free (contents); |
| 1946 | return false; |
| 1947 | } |
| 1948 | |
| 1949 | /* Gross. Turn off SEC_HAS_CONTENTS for the input symbol extension |
| 1950 | sections (see above). */ |
| 1951 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| 1952 | |
| 1953 | n_entries = symextn_sec->_raw_size / ELF32_PARISC_SX_SIZE; |
| 1954 | for (i = 0; i < n_entries; i++) |
| 1955 | { |
| 1956 | symext_entryS entry = |
| 1957 | ELF32_PARISC_SX_GET (input_bfd, contents + i * ELF32_PARISC_SX_SIZE); |
| 1958 | unsigned int value = ELF32_PARISC_SX_VAL (entry); |
| 1959 | unsigned int type = ELF32_PARISC_SX_TYPE (entry); |
| 1960 | struct elf32_hppa_args_hash_entry *args_hash; |
| 1961 | |
| 1962 | switch (type) |
| 1963 | { |
| 1964 | case PARISC_SXT_NULL: |
| 1965 | break; |
| 1966 | |
| 1967 | case PARISC_SXT_SYMNDX: |
| 1968 | if (value >= symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) |
| 1969 | { |
| 1970 | bfd_set_error (bfd_error_bad_value); |
| 1971 | free (contents); |
| 1972 | return false; |
| 1973 | } |
| 1974 | current_index = value; |
| 1975 | break; |
| 1976 | |
| 1977 | case PARISC_SXT_ARG_RELOC: |
| 1978 | if (current_index < symtab_hdr->sh_info) |
| 1979 | { |
| 1980 | Elf_Internal_Shdr *hdr; |
| 1981 | char *new_name; |
| 1982 | const char *sym_name; |
| 1983 | asection *sym_sec; |
| 1984 | unsigned int len; |
| 1985 | |
| 1986 | hdr = elf_elfsections (input_bfd)[local_syms[current_index].st_shndx]; |
| 1987 | sym_sec = hdr->bfd_section; |
| 1988 | sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| 1989 | symtab_hdr->sh_link, |
| 1990 | local_syms[current_index].st_name); |
| 1991 | len = strlen (sym_name) + 10; |
| 1992 | new_name = bfd_malloc (len); |
| 1993 | if (new_name == NULL) |
| 1994 | { |
| 1995 | free (contents); |
| 1996 | return false; |
| 1997 | } |
| 1998 | strcpy (new_name, sym_name); |
| 1999 | sprintf (new_name + len - 10, "_%08x", (int)sym_sec); |
| 2000 | |
| 2001 | /* This is a global symbol with argument location info. |
| 2002 | We need to enter it into the hash table. */ |
| 2003 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| 2004 | new_name, true, |
| 2005 | true); |
| 2006 | free (new_name); |
| 2007 | if (args_hash == NULL) |
| 2008 | { |
| 2009 | free (contents); |
| 2010 | return false; |
| 2011 | } |
| 2012 | args_hash->arg_bits = value; |
| 2013 | break; |
| 2014 | } |
| 2015 | else if (current_index >= symtab_hdr->sh_info) |
| 2016 | { |
| 2017 | struct elf_link_hash_entry *h; |
| 2018 | |
| 2019 | current_index -= symtab_hdr->sh_info; |
| 2020 | h = elf_sym_hashes(input_bfd)[current_index]; |
| 2021 | /* This is a global symbol with argument location |
| 2022 | information. We need to enter it into the hash table. */ |
| 2023 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| 2024 | h->root.root.string, |
| 2025 | true, true); |
| 2026 | if (args_hash == NULL) |
| 2027 | { |
| 2028 | bfd_set_error (bfd_error_bad_value); |
| 2029 | free (contents); |
| 2030 | return false; |
| 2031 | } |
| 2032 | args_hash->arg_bits = value; |
| 2033 | break; |
| 2034 | } |
| 2035 | else |
| 2036 | break; |
| 2037 | |
| 2038 | default: |
| 2039 | bfd_set_error (bfd_error_bad_value); |
| 2040 | free (contents); |
| 2041 | return false; |
| 2042 | } |
| 2043 | } |
| 2044 | free (contents); |
| 2045 | return true; |
| 2046 | } |
| 2047 | |
| 2048 | /* Undo the generic ELF code's subtraction of section->vma from the |
| 2049 | value of each external symbol. */ |
| 2050 | |
| 2051 | static boolean |
| 2052 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 2053 | bfd *abfd; |
| 2054 | struct bfd_link_info *info; |
| 2055 | const Elf_Internal_Sym *sym; |
| 2056 | const char **namep; |
| 2057 | flagword *flagsp; |
| 2058 | asection **secp; |
| 2059 | bfd_vma *valp; |
| 2060 | { |
| 2061 | *valp += (*secp)->vma; |
| 2062 | return true; |
| 2063 | } |
| 2064 | |
| 2065 | /* Determine the name of the stub needed to perform a call assuming the |
| 2066 | argument relocation bits for caller and callee are in CALLER and CALLEE |
| 2067 | for a call from LOCATION to DESTINATION. Copy the name into STUB_NAME. */ |
| 2068 | |
| 2069 | static void |
| 2070 | elf32_hppa_name_of_stub (caller, callee, location, destination, stub_name) |
| 2071 | unsigned int caller, callee; |
| 2072 | bfd_vma location, destination; |
| 2073 | char *stub_name; |
| 2074 | { |
| 2075 | arg_reloc_type arg_reloc_types[5]; |
| 2076 | |
| 2077 | if (elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types)) |
| 2078 | { |
| 2079 | arg_reloc_location i; |
| 2080 | /* Fill in the basic template. */ |
| 2081 | strcpy (stub_name, "__XX_XX_XX_XX_XX_stub_"); |
| 2082 | |
| 2083 | /* Now fix the specifics. */ |
| 2084 | for (i = ARG0; i <= RET; i++) |
| 2085 | switch (arg_reloc_types[i]) |
| 2086 | { |
| 2087 | case NO: |
| 2088 | stub_name[3 * i + 2] = 'N'; |
| 2089 | stub_name[3 * i + 3] = 'O'; |
| 2090 | break; |
| 2091 | case GF: |
| 2092 | stub_name[3 * i + 2] = 'G'; |
| 2093 | stub_name[3 * i + 3] = 'F'; |
| 2094 | break; |
| 2095 | case FG: |
| 2096 | stub_name[3 * i + 2] = 'F'; |
| 2097 | stub_name[3 * i + 3] = 'G'; |
| 2098 | break; |
| 2099 | case GD: |
| 2100 | stub_name[3 * i + 2] = 'G'; |
| 2101 | stub_name[3 * i + 3] = 'D'; |
| 2102 | break; |
| 2103 | case DG: |
| 2104 | stub_name[3 * i + 2] = 'D'; |
| 2105 | stub_name[3 * i + 3] = 'G'; |
| 2106 | break; |
| 2107 | } |
| 2108 | } |
| 2109 | else |
| 2110 | strcpy (stub_name, "_____long_branch_stub_"); |
| 2111 | } |
| 2112 | |
| 2113 | /* Determine if an argument relocation stub is needed to perform a |
| 2114 | call assuming the argument relocation bits for caller and callee |
| 2115 | are in CALLER and CALLEE. Place the type of relocations (if any) |
| 2116 | into stub_types_p. */ |
| 2117 | |
| 2118 | static boolean |
| 2119 | elf32_hppa_arg_reloc_needed (caller, callee, stub_types) |
| 2120 | unsigned int caller, callee; |
| 2121 | arg_reloc_type stub_types[5]; |
| 2122 | { |
| 2123 | /* Special case for no relocations. */ |
| 2124 | if (caller == 0 || callee == 0) |
| 2125 | return 0; |
| 2126 | else |
| 2127 | { |
| 2128 | arg_location caller_loc[5]; |
| 2129 | arg_location callee_loc[5]; |
| 2130 | |
| 2131 | /* Extract the location information for the argument and return |
| 2132 | value on both the caller and callee sides. */ |
| 2133 | caller_loc[ARG0] = EXTRACT_ARBITS (caller, ARG0); |
| 2134 | callee_loc[ARG0] = EXTRACT_ARBITS (callee, ARG0); |
| 2135 | caller_loc[ARG1] = EXTRACT_ARBITS (caller, ARG1); |
| 2136 | callee_loc[ARG1] = EXTRACT_ARBITS (callee, ARG1); |
| 2137 | caller_loc[ARG2] = EXTRACT_ARBITS (caller, ARG2); |
| 2138 | callee_loc[ARG2] = EXTRACT_ARBITS (callee, ARG2); |
| 2139 | caller_loc[ARG3] = EXTRACT_ARBITS (caller, ARG3); |
| 2140 | callee_loc[ARG3] = EXTRACT_ARBITS (callee, ARG3); |
| 2141 | caller_loc[RET] = EXTRACT_ARBITS (caller, RET); |
| 2142 | callee_loc[RET] = EXTRACT_ARBITS (callee, RET); |
| 2143 | |
| 2144 | /* Check some special combinations. This is necessary to |
| 2145 | deal with double precision FP arguments. */ |
| 2146 | if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU) |
| 2147 | { |
| 2148 | caller_loc[ARG0] = AR_FPDBL1; |
| 2149 | caller_loc[ARG1] = AR_NO; |
| 2150 | } |
| 2151 | if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU) |
| 2152 | { |
| 2153 | caller_loc[ARG2] = AR_FPDBL2; |
| 2154 | caller_loc[ARG3] = AR_NO; |
| 2155 | } |
| 2156 | if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU) |
| 2157 | { |
| 2158 | callee_loc[ARG0] = AR_FPDBL1; |
| 2159 | callee_loc[ARG1] = AR_NO; |
| 2160 | } |
| 2161 | if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU) |
| 2162 | { |
| 2163 | callee_loc[ARG2] = AR_FPDBL2; |
| 2164 | callee_loc[ARG3] = AR_NO; |
| 2165 | } |
| 2166 | |
| 2167 | /* Now look up any relocation needed for each argument and the |
| 2168 | return value. */ |
| 2169 | stub_types[ARG0] = arg_mismatches[caller_loc[ARG0]][callee_loc[ARG0]]; |
| 2170 | stub_types[ARG1] = arg_mismatches[caller_loc[ARG1]][callee_loc[ARG1]]; |
| 2171 | stub_types[ARG2] = arg_mismatches[caller_loc[ARG2]][callee_loc[ARG2]]; |
| 2172 | stub_types[ARG3] = arg_mismatches[caller_loc[ARG3]][callee_loc[ARG3]]; |
| 2173 | stub_types[RET] = ret_mismatches[caller_loc[RET]][callee_loc[RET]]; |
| 2174 | |
| 2175 | return (stub_types[ARG0] != NO |
| 2176 | || stub_types[ARG1] != NO |
| 2177 | || stub_types[ARG2] != NO |
| 2178 | || stub_types[ARG3] != NO |
| 2179 | || stub_types[RET] != NO); |
| 2180 | } |
| 2181 | } |
| 2182 | |
| 2183 | /* Compute the size of the stub needed to call from LOCATION to DESTINATION |
| 2184 | (a function named SYM_NAME), with argument relocation bits CALLER and |
| 2185 | CALLEE. Return zero if no stub is needed to perform such a call. */ |
| 2186 | |
| 2187 | static unsigned int |
| 2188 | elf32_hppa_size_of_stub (callee, caller, location, destination, sym_name) |
| 2189 | unsigned int callee, caller; |
| 2190 | bfd_vma location, destination; |
| 2191 | const char *sym_name; |
| 2192 | { |
| 2193 | arg_reloc_type arg_reloc_types[5]; |
| 2194 | |
| 2195 | /* Determine if a long branch or argument relocation stub is needed. |
| 2196 | If an argument relocation stub is needed, the relocation will be |
| 2197 | stored into arg_reloc_types. */ |
| 2198 | if (!(((int)(location - destination) > 0x3ffff) |
| 2199 | || ((int)(location - destination) < (int)0xfffc0000) |
| 2200 | || elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types))) |
| 2201 | return 0; |
| 2202 | |
| 2203 | /* Some kind of stub is needed. Determine how big it needs to be. |
| 2204 | First check for argument relocation stubs as they also handle |
| 2205 | long calls. Then check for long calls to millicode and finally |
| 2206 | the normal long calls. */ |
| 2207 | if (arg_reloc_types[ARG0] != NO |
| 2208 | || arg_reloc_types[ARG1] != NO |
| 2209 | || arg_reloc_types[ARG2] != NO |
| 2210 | || arg_reloc_types[ARG3] != NO |
| 2211 | || arg_reloc_types[RET] != NO) |
| 2212 | { |
| 2213 | /* Some kind of argument relocation stub is needed. */ |
| 2214 | unsigned int len = 16; |
| 2215 | arg_reloc_location i; |
| 2216 | |
| 2217 | /* Each GR or FG relocation takes 2 insns, each GD or DG |
| 2218 | relocation takes 3 insns. Plus 4 more insns for the |
| 2219 | RP adjustment, ldil & (be | ble) and copy. */ |
| 2220 | for (i = ARG0; i <= RET; i++) |
| 2221 | switch (arg_reloc_types[i]) |
| 2222 | { |
| 2223 | case GF: |
| 2224 | case FG: |
| 2225 | len += 8; |
| 2226 | break; |
| 2227 | |
| 2228 | case GD: |
| 2229 | case DG: |
| 2230 | len += 12; |
| 2231 | break; |
| 2232 | |
| 2233 | default: |
| 2234 | break; |
| 2235 | } |
| 2236 | |
| 2237 | /* Extra instructions are needed if we're relocating a return value. */ |
| 2238 | if (arg_reloc_types[RET] != NO) |
| 2239 | len += 12; |
| 2240 | |
| 2241 | return len; |
| 2242 | } |
| 2243 | else if (!strncmp ("$$", sym_name, 2) |
| 2244 | && strcmp ("$$dyncall", sym_name)) |
| 2245 | return 12; |
| 2246 | else |
| 2247 | return 16; |
| 2248 | } |
| 2249 | |
| 2250 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
| 2251 | IN_ARGS contains the stub BFD and link info pointers. */ |
| 2252 | |
| 2253 | static boolean |
| 2254 | elf32_hppa_build_one_stub (gen_entry, in_args) |
| 2255 | struct bfd_hash_entry *gen_entry; |
| 2256 | PTR in_args; |
| 2257 | { |
| 2258 | void **args = (void **)in_args; |
| 2259 | bfd *stub_bfd = (bfd *)args[0]; |
| 2260 | struct bfd_link_info *info = (struct bfd_link_info *)args[1]; |
| 2261 | struct elf32_hppa_stub_hash_entry *entry; |
| 2262 | struct elf32_hppa_stub_hash_table *stub_hash_table; |
| 2263 | bfd_byte *loc; |
| 2264 | symvalue sym_value; |
| 2265 | const char *sym_name; |
| 2266 | |
| 2267 | /* Initialize pointers to the stub hash table, the particular entry we |
| 2268 | are building a stub for, and where (in memory) we should place the stub |
| 2269 | instructions. */ |
| 2270 | entry = (struct elf32_hppa_stub_hash_entry *)gen_entry; |
| 2271 | stub_hash_table = elf32_hppa_hash_table(info)->stub_hash_table; |
| 2272 | loc = stub_hash_table->location; |
| 2273 | |
| 2274 | /* Make a note of the offset within the stubs for this entry. */ |
| 2275 | entry->offset = stub_hash_table->offset; |
| 2276 | |
| 2277 | /* The symbol's name starts at offset 22. */ |
| 2278 | sym_name = entry->root.string + 22; |
| 2279 | |
| 2280 | sym_value = (entry->target_value |
| 2281 | + entry->target_section->output_offset |
| 2282 | + entry->target_section->output_section->vma); |
| 2283 | |
| 2284 | if (strncmp ("_____long_branch_stub_", entry->root.string, 22)) |
| 2285 | { |
| 2286 | /* This must be an argument or return value relocation stub. */ |
| 2287 | unsigned long insn; |
| 2288 | arg_reloc_location i; |
| 2289 | bfd_byte *begin_loc = loc; |
| 2290 | |
| 2291 | /* First the return pointer adjustment. Depending on exact calling |
| 2292 | sequence this instruction may be skipped. */ |
| 2293 | bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); |
| 2294 | loc += 4; |
| 2295 | |
| 2296 | /* If we are relocating a return value, then we're going to have |
| 2297 | to return into the stub. So we have to save off the user's |
| 2298 | return pointer into the stack at RP'. */ |
| 2299 | if (strncmp (entry->root.string + 14, "NO", 2)) |
| 2300 | { |
| 2301 | bfd_put_32 (stub_bfd, STW_R31_M8R30, loc); |
| 2302 | loc += 4; |
| 2303 | } |
| 2304 | |
| 2305 | /* Iterate over the argument relocations, emitting instructions |
| 2306 | to move them around as necessary. */ |
| 2307 | for (i = ARG0; i <= ARG3; i++) |
| 2308 | { |
| 2309 | if (!strncmp (entry->root.string + 3 * i + 2, "GF", 2)) |
| 2310 | { |
| 2311 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((26 - i) << 16), loc); |
| 2312 | bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | (4 + i), loc + 4); |
| 2313 | loc += 8; |
| 2314 | } |
| 2315 | else if (!strncmp (entry->root.string + 3 * i + 2, "FG", 2)) |
| 2316 | { |
| 2317 | bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | (4 + i), loc); |
| 2318 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((26 - i) << 16), loc + 4); |
| 2319 | loc += 8; |
| 2320 | } |
| 2321 | else if (!strncmp (entry->root.string + 3 * i + 2, "GD", 2)) |
| 2322 | { |
| 2323 | bfd_put_32 (stub_bfd, STW_ARG_M12R30 | ((26 - i) << 16), loc); |
| 2324 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((25 - i) << 16), loc + 4); |
| 2325 | bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | (5 + i), loc + 8); |
| 2326 | loc += 12; |
| 2327 | } |
| 2328 | else if (!strncmp (entry->root.string + 3 * i + 2, "DG", 2)) |
| 2329 | { |
| 2330 | bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | (5 + i), loc); |
| 2331 | bfd_put_32 (stub_bfd, LDW_M12R30_ARG | ((26 - i) << 16), loc + 4); |
| 2332 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((25 - i) << 16), loc + 8); |
| 2333 | loc += 12; |
| 2334 | } |
| 2335 | } |
| 2336 | |
| 2337 | /* Load the high bits of the target address into %r1. */ |
| 2338 | insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, |
| 2339 | hppa_field_adjust (sym_value, 0, e_lrsel), 21); |
| 2340 | bfd_put_32 (stub_bfd, insn, loc); |
| 2341 | loc += 4; |
| 2342 | |
| 2343 | /* If we are relocating a return value, then we're going to have |
| 2344 | to return into the stub, then perform the return value relocation. */ |
| 2345 | if (strncmp (entry->root.string + 14, "NO", 2)) |
| 2346 | { |
| 2347 | /* To return to the stub we "ble" to the target and copy the return |
| 2348 | pointer from %r31 into %r2. */ |
| 2349 | insn = hppa_rebuild_insn (stub_bfd, |
| 2350 | BLE_SR4_R1, |
| 2351 | hppa_field_adjust (sym_value, 0, |
| 2352 | e_rrsel) >> 2, |
| 2353 | 17); |
| 2354 | bfd_put_32 (stub_bfd, insn, loc); |
| 2355 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); |
| 2356 | |
| 2357 | /* Reload the return pointer for our caller from the stack. */ |
| 2358 | bfd_put_32 (stub_bfd, LDW_M8R30_R31, loc + 8); |
| 2359 | loc += 12; |
| 2360 | |
| 2361 | /* Perform the return value relocation. */ |
| 2362 | if (!strncmp (entry->root.string + 14, "GF", 2)) |
| 2363 | { |
| 2364 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (28 << 16), loc); |
| 2365 | bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | 4, loc + 4); |
| 2366 | loc += 8; |
| 2367 | } |
| 2368 | else if (!strncmp (entry->root.string + 14, "FG", 2)) |
| 2369 | { |
| 2370 | bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | 4, loc); |
| 2371 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (28 << 16), loc + 4); |
| 2372 | loc += 8; |
| 2373 | } |
| 2374 | else if (!strncmp (entry->root.string + 2, "GD", 2)) |
| 2375 | { |
| 2376 | bfd_put_32 (stub_bfd, STW_ARG_M12R30 | (28 << 16), loc); |
| 2377 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (29 << 16), loc + 4); |
| 2378 | bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | 4, loc + 8); |
| 2379 | loc += 12; |
| 2380 | } |
| 2381 | else if (!strncmp (entry->root.string + 2, "DG", 2)) |
| 2382 | { |
| 2383 | bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | 4, loc); |
| 2384 | bfd_put_32 (stub_bfd, LDW_M12R30_ARG | (28 << 16), loc + 4); |
| 2385 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (29 << 16), loc + 8); |
| 2386 | loc += 12; |
| 2387 | } |
| 2388 | /* Branch back to the user's code now. */ |
| 2389 | bfd_put_32 (stub_bfd, BV_N_0_R31, loc); |
| 2390 | loc += 4; |
| 2391 | } |
| 2392 | else |
| 2393 | { |
| 2394 | /* No return value relocation, so we can simply "be" to the |
| 2395 | target and copy out return pointer into %r2. */ |
| 2396 | insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1, |
| 2397 | hppa_field_adjust (sym_value, 0, |
| 2398 | e_rrsel) >> 2, 17); |
| 2399 | bfd_put_32 (stub_bfd, insn, loc); |
| 2400 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); |
| 2401 | loc += 8; |
| 2402 | } |
| 2403 | |
| 2404 | /* Update the location and offsets. */ |
| 2405 | stub_hash_table->location += (loc - begin_loc); |
| 2406 | stub_hash_table->offset += (loc - begin_loc); |
| 2407 | } |
| 2408 | else |
| 2409 | { |
| 2410 | /* Create one of two variant long branch stubs. One for $$dyncall and |
| 2411 | normal calls, the other for calls to millicode. */ |
| 2412 | unsigned long insn; |
| 2413 | int millicode_call = 0; |
| 2414 | |
| 2415 | if (!strncmp ("$$", sym_name, 2) && strcmp ("$$dyncall", sym_name)) |
| 2416 | millicode_call = 1; |
| 2417 | |
| 2418 | /* First the return pointer adjustment. Depending on exact calling |
| 2419 | sequence this instruction may be skipped. */ |
| 2420 | bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); |
| 2421 | |
| 2422 | /* The next two instructions are the long branch itself. A long branch |
| 2423 | is formed with "ldil" loading the upper bits of the target address |
| 2424 | into a register, then branching with "be" which adds in the lower bits. |
| 2425 | Long branches to millicode nullify the delay slot of the "be". */ |
| 2426 | insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, |
| 2427 | hppa_field_adjust (sym_value, 0, e_lrsel), 21); |
| 2428 | bfd_put_32 (stub_bfd, insn, loc + 4); |
| 2429 | insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1 | (millicode_call ? 2 : 0), |
| 2430 | hppa_field_adjust (sym_value, 0, e_rrsel) >> 2, |
| 2431 | 17); |
| 2432 | bfd_put_32 (stub_bfd, insn, loc + 8); |
| 2433 | |
| 2434 | if (!millicode_call) |
| 2435 | { |
| 2436 | /* The sequence to call this stub places the return pointer into %r31, |
| 2437 | the final target expects the return pointer in %r2, so copy the |
| 2438 | return pointer into the proper register. */ |
| 2439 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 12); |
| 2440 | |
| 2441 | /* Update the location and offsets. */ |
| 2442 | stub_hash_table->location += 16; |
| 2443 | stub_hash_table->offset += 16; |
| 2444 | } |
| 2445 | else |
| 2446 | { |
| 2447 | /* Update the location and offsets. */ |
| 2448 | stub_hash_table->location += 12; |
| 2449 | stub_hash_table->offset += 12; |
| 2450 | } |
| 2451 | |
| 2452 | } |
| 2453 | return true; |
| 2454 | } |
| 2455 | |
| 2456 | /* External entry points for sizing and building linker stubs. */ |
| 2457 | |
| 2458 | /* Build all the stubs associated with the current output file. The |
| 2459 | stubs are kept in a hash table attached to the main linker hash |
| 2460 | table. This is called via hppaelf_finish in the linker. */ |
| 2461 | |
| 2462 | boolean |
| 2463 | elf32_hppa_build_stubs (stub_bfd, info) |
| 2464 | bfd *stub_bfd; |
| 2465 | struct bfd_link_info *info; |
| 2466 | { |
| 2467 | /* The stub BFD only has one section. */ |
| 2468 | asection *stub_sec = stub_bfd->sections; |
| 2469 | struct elf32_hppa_stub_hash_table *table; |
| 2470 | unsigned int size; |
| 2471 | void *args[2]; |
| 2472 | |
| 2473 | /* So we can pass both the BFD for the stubs and the link info |
| 2474 | structure to the routine which actually builds stubs. */ |
| 2475 | args[0] = stub_bfd; |
| 2476 | args[1] = info; |
| 2477 | |
| 2478 | /* Allocate memory to hold the linker stubs. */ |
| 2479 | size = bfd_section_size (stub_bfd, stub_sec); |
| 2480 | stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size); |
| 2481 | if (stub_sec->contents == NULL) |
| 2482 | return false; |
| 2483 | table = elf32_hppa_hash_table(info)->stub_hash_table; |
| 2484 | table->location = stub_sec->contents; |
| 2485 | |
| 2486 | /* Build the stubs as directed by the stub hash table. */ |
| 2487 | elf32_hppa_stub_hash_traverse (table, elf32_hppa_build_one_stub, args); |
| 2488 | |
| 2489 | return true; |
| 2490 | } |
| 2491 | |
| 2492 | /* Determine and set the size of the stub section for a final link. |
| 2493 | |
| 2494 | The basic idea here is to examine all the relocations looking for |
| 2495 | PC-relative calls to a target that is unreachable with a "bl" |
| 2496 | instruction or calls where the caller and callee disagree on the |
| 2497 | location of their arguments or return value. */ |
| 2498 | |
| 2499 | boolean |
| 2500 | elf32_hppa_size_stubs (stub_bfd, output_bfd, link_info) |
| 2501 | bfd *stub_bfd; |
| 2502 | bfd *output_bfd; |
| 2503 | struct bfd_link_info *link_info; |
| 2504 | { |
| 2505 | bfd *input_bfd; |
| 2506 | asection *section, *stub_sec = 0; |
| 2507 | Elf_Internal_Shdr *symtab_hdr; |
| 2508 | Elf_Internal_Sym *local_syms, *isym, **all_local_syms; |
| 2509 | Elf32_External_Sym *ext_syms, *esym; |
| 2510 | unsigned int i, index, bfd_count = 0; |
| 2511 | struct elf32_hppa_stub_hash_table *stub_hash_table = 0; |
| 2512 | struct elf32_hppa_args_hash_table *args_hash_table = 0; |
| 2513 | |
| 2514 | /* Create and initialize the stub hash table. */ |
| 2515 | stub_hash_table = ((struct elf32_hppa_stub_hash_table *) |
| 2516 | bfd_malloc (sizeof (struct elf32_hppa_stub_hash_table))); |
| 2517 | if (!stub_hash_table) |
| 2518 | goto error_return; |
| 2519 | |
| 2520 | if (!elf32_hppa_stub_hash_table_init (stub_hash_table, stub_bfd, |
| 2521 | elf32_hppa_stub_hash_newfunc)) |
| 2522 | goto error_return; |
| 2523 | |
| 2524 | /* Likewise for the argument location hash table. */ |
| 2525 | args_hash_table = ((struct elf32_hppa_args_hash_table *) |
| 2526 | bfd_malloc (sizeof (struct elf32_hppa_args_hash_table))); |
| 2527 | if (!args_hash_table) |
| 2528 | goto error_return; |
| 2529 | |
| 2530 | if (!elf32_hppa_args_hash_table_init (args_hash_table, |
| 2531 | elf32_hppa_args_hash_newfunc)) |
| 2532 | goto error_return; |
| 2533 | |
| 2534 | /* Attach the hash tables to the main hash table. */ |
| 2535 | elf32_hppa_hash_table(link_info)->stub_hash_table = stub_hash_table; |
| 2536 | elf32_hppa_hash_table(link_info)->args_hash_table = args_hash_table; |
| 2537 | |
| 2538 | /* Count the number of input BFDs. */ |
| 2539 | for (input_bfd = link_info->input_bfds; |
| 2540 | input_bfd != NULL; |
| 2541 | input_bfd = input_bfd->link_next) |
| 2542 | bfd_count++; |
| 2543 | |
| 2544 | /* We want to read in symbol extension records only once. To do this |
| 2545 | we need to read in the local symbols in parallel and save them for |
| 2546 | later use; so hold pointers to the local symbols in an array. */ |
| 2547 | all_local_syms |
| 2548 | = (Elf_Internal_Sym **) bfd_malloc (sizeof (Elf_Internal_Sym *) |
| 2549 | * bfd_count); |
| 2550 | if (all_local_syms == NULL) |
| 2551 | goto error_return; |
| 2552 | memset (all_local_syms, 0, sizeof (Elf_Internal_Sym *) * bfd_count); |
| 2553 | |
| 2554 | /* Walk over all the input BFDs adding entries to the args hash table |
| 2555 | for all the external functions. */ |
| 2556 | for (input_bfd = link_info->input_bfds, index = 0; |
| 2557 | input_bfd != NULL; |
| 2558 | input_bfd = input_bfd->link_next, index++) |
| 2559 | { |
| 2560 | /* We'll need the symbol table in a second. */ |
| 2561 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2562 | if (symtab_hdr->sh_info == 0) |
| 2563 | continue; |
| 2564 | |
| 2565 | /* We need an array of the local symbols attached to the input bfd. |
| 2566 | Unfortunately, we're going to have to read & swap them in. */ |
| 2567 | local_syms |
| 2568 | = (Elf_Internal_Sym *) bfd_malloc (symtab_hdr->sh_info |
| 2569 | * sizeof (Elf_Internal_Sym)); |
| 2570 | if (local_syms == NULL) |
| 2571 | { |
| 2572 | for (i = 0; i < bfd_count; i++) |
| 2573 | if (all_local_syms[i]) |
| 2574 | free (all_local_syms[i]); |
| 2575 | free (all_local_syms); |
| 2576 | goto error_return; |
| 2577 | } |
| 2578 | all_local_syms[index] = local_syms; |
| 2579 | |
| 2580 | ext_syms |
| 2581 | = (Elf32_External_Sym *) bfd_malloc (symtab_hdr->sh_info |
| 2582 | * sizeof (Elf32_External_Sym)); |
| 2583 | if (ext_syms == NULL) |
| 2584 | { |
| 2585 | for (i = 0; i < bfd_count; i++) |
| 2586 | if (all_local_syms[i]) |
| 2587 | free (all_local_syms[i]); |
| 2588 | free (all_local_syms); |
| 2589 | goto error_return; |
| 2590 | } |
| 2591 | |
| 2592 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| 2593 | || bfd_read (ext_syms, 1, |
| 2594 | (symtab_hdr->sh_info |
| 2595 | * sizeof (Elf32_External_Sym)), input_bfd) |
| 2596 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))) |
| 2597 | { |
| 2598 | for (i = 0; i < bfd_count; i++) |
| 2599 | if (all_local_syms[i]) |
| 2600 | free (all_local_syms[i]); |
| 2601 | free (all_local_syms); |
| 2602 | free (ext_syms); |
| 2603 | goto error_return; |
| 2604 | } |
| 2605 | |
| 2606 | /* Swap the local symbols in. */ |
| 2607 | isym = local_syms; |
| 2608 | esym = ext_syms; |
| 2609 | for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++) |
| 2610 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); |
| 2611 | |
| 2612 | /* Now we can free the external symbols. */ |
| 2613 | free (ext_syms); |
| 2614 | |
| 2615 | if (elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, |
| 2616 | local_syms) == false) |
| 2617 | { |
| 2618 | for (i = 0; i < bfd_count; i++) |
| 2619 | if (all_local_syms[i]) |
| 2620 | free (all_local_syms[i]); |
| 2621 | free (all_local_syms); |
| 2622 | goto error_return; |
| 2623 | } |
| 2624 | } |
| 2625 | |
| 2626 | /* Magic as we know the stub bfd only has one section. */ |
| 2627 | stub_sec = stub_bfd->sections; |
| 2628 | |
| 2629 | /* If generating a relocateable output file, then we don't |
| 2630 | have to examine the relocs. */ |
| 2631 | if (link_info->relocateable) |
| 2632 | { |
| 2633 | for (i = 0; i < bfd_count; i++) |
| 2634 | if (all_local_syms[i]) |
| 2635 | free (all_local_syms[i]); |
| 2636 | free (all_local_syms); |
| 2637 | return true; |
| 2638 | } |
| 2639 | |
| 2640 | /* Now that we have argument location information for all the global |
| 2641 | functions we can start looking for stubs. */ |
| 2642 | for (input_bfd = link_info->input_bfds, index = 0; |
| 2643 | input_bfd != NULL; |
| 2644 | input_bfd = input_bfd->link_next, index++) |
| 2645 | { |
| 2646 | /* We'll need the symbol table in a second. */ |
| 2647 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2648 | if (symtab_hdr->sh_info == 0) |
| 2649 | continue; |
| 2650 | |
| 2651 | local_syms = all_local_syms[index]; |
| 2652 | |
| 2653 | /* Walk over each section attached to the input bfd. */ |
| 2654 | for (section = input_bfd->sections; |
| 2655 | section != NULL; |
| 2656 | section = section->next) |
| 2657 | { |
| 2658 | Elf_Internal_Shdr *input_rel_hdr; |
| 2659 | Elf32_External_Rela *external_relocs, *erelaend, *erela; |
| 2660 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 2661 | |
| 2662 | /* If there aren't any relocs, then there's nothing to do. */ |
| 2663 | if ((section->flags & SEC_RELOC) == 0 |
| 2664 | || section->reloc_count == 0) |
| 2665 | continue; |
| 2666 | |
| 2667 | /* Allocate space for the external relocations. */ |
| 2668 | external_relocs |
| 2669 | = ((Elf32_External_Rela *) |
| 2670 | bfd_malloc (section->reloc_count |
| 2671 | * sizeof (Elf32_External_Rela))); |
| 2672 | if (external_relocs == NULL) |
| 2673 | { |
| 2674 | for (i = 0; i < bfd_count; i++) |
| 2675 | if (all_local_syms[i]) |
| 2676 | free (all_local_syms[i]); |
| 2677 | free (all_local_syms); |
| 2678 | goto error_return; |
| 2679 | } |
| 2680 | |
| 2681 | /* Likewise for the internal relocations. */ |
| 2682 | internal_relocs |
| 2683 | = ((Elf_Internal_Rela *) |
| 2684 | bfd_malloc (section->reloc_count * sizeof (Elf_Internal_Rela))); |
| 2685 | if (internal_relocs == NULL) |
| 2686 | { |
| 2687 | free (external_relocs); |
| 2688 | for (i = 0; i < bfd_count; i++) |
| 2689 | if (all_local_syms[i]) |
| 2690 | free (all_local_syms[i]); |
| 2691 | free (all_local_syms); |
| 2692 | goto error_return; |
| 2693 | } |
| 2694 | |
| 2695 | /* Read in the external relocs. */ |
| 2696 | input_rel_hdr = &elf_section_data (section)->rel_hdr; |
| 2697 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 |
| 2698 | || bfd_read (external_relocs, 1, input_rel_hdr->sh_size, |
| 2699 | input_bfd) != input_rel_hdr->sh_size) |
| 2700 | { |
| 2701 | free (external_relocs); |
| 2702 | free (internal_relocs); |
| 2703 | for (i = 0; i < bfd_count; i++) |
| 2704 | if (all_local_syms[i]) |
| 2705 | free (all_local_syms[i]); |
| 2706 | free (all_local_syms); |
| 2707 | goto error_return; |
| 2708 | } |
| 2709 | |
| 2710 | /* Swap in the relocs. */ |
| 2711 | erela = external_relocs; |
| 2712 | erelaend = erela + section->reloc_count; |
| 2713 | irela = internal_relocs; |
| 2714 | for (; erela < erelaend; erela++, irela++) |
| 2715 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); |
| 2716 | |
| 2717 | /* We're done with the external relocs, free them. */ |
| 2718 | free (external_relocs); |
| 2719 | |
| 2720 | /* Now examine each relocation. */ |
| 2721 | irela = internal_relocs; |
| 2722 | irelaend = irela + section->reloc_count; |
| 2723 | for (; irela < irelaend; irela++) |
| 2724 | { |
| 2725 | long r_type, callee_args, caller_args, size_of_stub; |
| 2726 | unsigned long r_index; |
| 2727 | struct elf_link_hash_entry *hash; |
| 2728 | struct elf32_hppa_stub_hash_entry *stub_hash; |
| 2729 | struct elf32_hppa_args_hash_entry *args_hash; |
| 2730 | Elf_Internal_Sym *sym; |
| 2731 | asection *sym_sec; |
| 2732 | const char *sym_name; |
| 2733 | symvalue sym_value; |
| 2734 | bfd_vma location, destination; |
| 2735 | char *new_name = NULL; |
| 2736 | |
| 2737 | r_type = ELF32_R_TYPE (irela->r_info); |
| 2738 | r_index = ELF32_R_SYM (irela->r_info); |
| 2739 | |
| 2740 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) |
| 2741 | { |
| 2742 | bfd_set_error (bfd_error_bad_value); |
| 2743 | free (internal_relocs); |
| 2744 | for (i = 0; i < bfd_count; i++) |
| 2745 | if (all_local_syms[i]) |
| 2746 | free (all_local_syms[i]); |
| 2747 | free (all_local_syms); |
| 2748 | goto error_return; |
| 2749 | } |
| 2750 | |
| 2751 | /* Only look for stubs on call instructions or plabel |
| 2752 | references. */ |
| 2753 | if (r_type != R_PARISC_PCREL17F |
| 2754 | && r_type != R_PARISC_PLABEL32 |
| 2755 | && r_type != R_PARISC_PLABEL21L |
| 2756 | && r_type != R_PARISC_PLABEL14R) |
| 2757 | continue; |
| 2758 | |
| 2759 | /* Now determine the call target, its name, value, section |
| 2760 | and argument relocation bits. */ |
| 2761 | hash = NULL; |
| 2762 | sym = NULL; |
| 2763 | sym_sec = NULL; |
| 2764 | if (r_index < symtab_hdr->sh_info) |
| 2765 | { |
| 2766 | /* It's a local symbol. */ |
| 2767 | Elf_Internal_Shdr *hdr; |
| 2768 | |
| 2769 | sym = local_syms + r_index; |
| 2770 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; |
| 2771 | sym_sec = hdr->bfd_section; |
| 2772 | sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| 2773 | symtab_hdr->sh_link, |
| 2774 | sym->st_name); |
| 2775 | sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| 2776 | ? 0 : sym->st_value); |
| 2777 | destination = (sym_value |
| 2778 | + sym_sec->output_offset |
| 2779 | + sym_sec->output_section->vma); |
| 2780 | |
| 2781 | /* Tack on an ID so we can uniquely identify this local |
| 2782 | symbol in the stub or arg info hash tables. */ |
| 2783 | new_name = bfd_malloc (strlen (sym_name) + 10); |
| 2784 | if (new_name == 0) |
| 2785 | { |
| 2786 | free (internal_relocs); |
| 2787 | for (i = 0; i < bfd_count; i++) |
| 2788 | if (all_local_syms[i]) |
| 2789 | free (all_local_syms[i]); |
| 2790 | free (all_local_syms); |
| 2791 | goto error_return; |
| 2792 | } |
| 2793 | sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| 2794 | sym_name = new_name; |
| 2795 | } |
| 2796 | else |
| 2797 | { |
| 2798 | /* It's an external symbol. */ |
| 2799 | long index; |
| 2800 | |
| 2801 | index = r_index - symtab_hdr->sh_info; |
| 2802 | hash = elf_sym_hashes (input_bfd)[index]; |
| 2803 | if (hash->root.type == bfd_link_hash_defined |
| 2804 | || hash->root.type == bfd_link_hash_defweak) |
| 2805 | { |
| 2806 | sym_sec = hash->root.u.def.section; |
| 2807 | sym_name = hash->root.root.string; |
| 2808 | sym_value = hash->root.u.def.value; |
| 2809 | destination = (sym_value |
| 2810 | + sym_sec->output_offset |
| 2811 | + sym_sec->output_section->vma); |
| 2812 | } |
| 2813 | else |
| 2814 | { |
| 2815 | bfd_set_error (bfd_error_bad_value); |
| 2816 | free (internal_relocs); |
| 2817 | for (i = 0; i < bfd_count; i++) |
| 2818 | if (all_local_syms[i]) |
| 2819 | free (all_local_syms[i]); |
| 2820 | free (all_local_syms); |
| 2821 | goto error_return; |
| 2822 | } |
| 2823 | } |
| 2824 | |
| 2825 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| 2826 | sym_name, false, false); |
| 2827 | |
| 2828 | /* Get both caller and callee argument information. */ |
| 2829 | if (args_hash == NULL) |
| 2830 | callee_args = 0; |
| 2831 | else |
| 2832 | callee_args = args_hash->arg_bits; |
| 2833 | |
| 2834 | /* For calls get the caller's bits from the addend of |
| 2835 | the call relocation. For PLABELS the caller's bits |
| 2836 | are assumed to have all args & return values in general |
| 2837 | registers (0x155). */ |
| 2838 | if (r_type == R_PARISC_PCREL17F) |
| 2839 | caller_args = HPPA_R_ARG_RELOC (irela->r_addend); |
| 2840 | else |
| 2841 | caller_args = 0x155; |
| 2842 | |
| 2843 | /* Now determine where the call point is. */ |
| 2844 | location = (section->output_offset |
| 2845 | + section->output_section->vma |
| 2846 | + irela->r_offset); |
| 2847 | |
| 2848 | /* We only care about the destination for PCREL function |
| 2849 | calls (eg. we don't care for PLABELS). */ |
| 2850 | if (r_type != R_PARISC_PCREL17F) |
| 2851 | location = destination; |
| 2852 | |
| 2853 | /* Determine what (if any) linker stub is needed and its |
| 2854 | size (in bytes). */ |
| 2855 | size_of_stub = elf32_hppa_size_of_stub (callee_args, |
| 2856 | caller_args, |
| 2857 | location, |
| 2858 | destination, |
| 2859 | sym_name); |
| 2860 | if (size_of_stub != 0) |
| 2861 | { |
| 2862 | char *stub_name; |
| 2863 | unsigned int len; |
| 2864 | |
| 2865 | /* Get the name of this stub. */ |
| 2866 | len = strlen (sym_name); |
| 2867 | len += 23; |
| 2868 | |
| 2869 | stub_name = bfd_malloc (len); |
| 2870 | if (!stub_name) |
| 2871 | { |
| 2872 | /* Because sym_name was mallocd above for local |
| 2873 | symbols. */ |
| 2874 | if (r_index < symtab_hdr->sh_info) |
| 2875 | free (new_name); |
| 2876 | |
| 2877 | free (internal_relocs); |
| 2878 | for (i = 0; i < bfd_count; i++) |
| 2879 | if (all_local_syms[i]) |
| 2880 | free (all_local_syms[i]); |
| 2881 | free (all_local_syms); |
| 2882 | goto error_return; |
| 2883 | } |
| 2884 | elf32_hppa_name_of_stub (caller_args, callee_args, |
| 2885 | location, destination, stub_name); |
| 2886 | strcat (stub_name + 22, sym_name); |
| 2887 | |
| 2888 | /* Because sym_name was malloced above for local symbols. */ |
| 2889 | if (r_index < symtab_hdr->sh_info) |
| 2890 | free (new_name); |
| 2891 | |
| 2892 | stub_hash |
| 2893 | = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, |
| 2894 | false, false); |
| 2895 | if (stub_hash != NULL) |
| 2896 | { |
| 2897 | /* The proper stub has already been created, nothing |
| 2898 | else to do. */ |
| 2899 | free (stub_name); |
| 2900 | } |
| 2901 | else |
| 2902 | { |
| 2903 | bfd_set_section_size (stub_bfd, stub_sec, |
| 2904 | (bfd_section_size (stub_bfd, |
| 2905 | stub_sec) |
| 2906 | + size_of_stub)); |
| 2907 | |
| 2908 | /* Enter this entry into the linker stub hash table. */ |
| 2909 | stub_hash |
| 2910 | = elf32_hppa_stub_hash_lookup (stub_hash_table, |
| 2911 | stub_name, true, true); |
| 2912 | if (stub_hash == NULL) |
| 2913 | { |
| 2914 | free (stub_name); |
| 2915 | free (internal_relocs); |
| 2916 | for (i = 0; i < bfd_count; i++) |
| 2917 | if (all_local_syms[i]) |
| 2918 | free (all_local_syms[i]); |
| 2919 | free (all_local_syms); |
| 2920 | goto error_return; |
| 2921 | } |
| 2922 | |
| 2923 | /* We'll need these to determine the address that the |
| 2924 | stub will branch to. */ |
| 2925 | stub_hash->target_value = sym_value; |
| 2926 | stub_hash->target_section = sym_sec; |
| 2927 | } |
| 2928 | free (stub_name); |
| 2929 | } |
| 2930 | } |
| 2931 | /* We're done with the internal relocs, free them. */ |
| 2932 | free (internal_relocs); |
| 2933 | } |
| 2934 | } |
| 2935 | /* We're done with the local symbols, free them. */ |
| 2936 | for (i = 0; i < bfd_count; i++) |
| 2937 | if (all_local_syms[i]) |
| 2938 | free (all_local_syms[i]); |
| 2939 | free (all_local_syms); |
| 2940 | return true; |
| 2941 | |
| 2942 | error_return: |
| 2943 | /* Return gracefully, avoiding dangling references to the hash tables. */ |
| 2944 | if (stub_hash_table) |
| 2945 | { |
| 2946 | elf32_hppa_hash_table(link_info)->stub_hash_table = NULL; |
| 2947 | free (stub_hash_table); |
| 2948 | } |
| 2949 | if (args_hash_table) |
| 2950 | { |
| 2951 | elf32_hppa_hash_table(link_info)->args_hash_table = NULL; |
| 2952 | free (args_hash_table); |
| 2953 | } |
| 2954 | /* Set the size of the stub section to zero since we're never going |
| 2955 | to create them. Avoids losing when we try to get its contents |
| 2956 | too. */ |
| 2957 | bfd_set_section_size (stub_bfd, stub_sec, 0); |
| 2958 | return false; |
| 2959 | } |
| 2960 | |
| 2961 | /* Misc BFD support code. */ |
| 2962 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
| 2963 | #define bfd_elf32_bfd_is_local_label_name hppa_elf_is_local_label_name |
| 2964 | |
| 2965 | /* Symbol extension stuff. */ |
| 2966 | #define bfd_elf32_set_section_contents elf32_hppa_set_section_contents |
| 2967 | #define elf_info_to_howto elf32_hppa_info_to_howto |
| 2968 | #define elf_backend_symbol_table_processing \ |
| 2969 | elf32_hppa_backend_symbol_table_processing |
| 2970 | #define elf_backend_begin_write_processing \ |
| 2971 | elf32_hppa_backend_begin_write_processing |
| 2972 | #define elf_backend_final_write_processing \ |
| 2973 | elf32_hppa_backend_final_write_processing |
| 2974 | |
| 2975 | /* Stuff for the BFD linker. */ |
| 2976 | #define elf_backend_relocate_section elf32_hppa_relocate_section |
| 2977 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook |
| 2978 | #define elf_backend_link_output_symbol_hook \ |
| 2979 | elf32_hppa_link_output_symbol_hook |
| 2980 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 2981 | elf32_hppa_link_hash_table_create |
| 2982 | |
| 2983 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec |
| 2984 | #define TARGET_BIG_NAME "elf32-hppa" |
| 2985 | #define ELF_ARCH bfd_arch_hppa |
| 2986 | #define ELF_MACHINE_CODE EM_PARISC |
| 2987 | #define ELF_MAXPAGESIZE 0x1000 |
| 2988 | |
| 2989 | #include "elf32-target.h" |