| blob | 9564671af7bb7a0419576afc5a46529b03fe8ddb |
1 /* FRV-specific support for 32-bit ELF.
2 Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 /* Forward declarations. */
29 static bfd_reloc_status_type elf32_frv_relocate_lo16
31 static bfd_reloc_status_type elf32_frv_relocate_hi16
33 static bfd_reloc_status_type elf32_frv_relocate_label24
35 static bfd_reloc_status_type elf32_frv_relocate_gprel12
38 static bfd_reloc_status_type elf32_frv_relocate_gprelu12
41 static bfd_reloc_status_type elf32_frv_relocate_gprello
44 static bfd_reloc_status_type elf32_frv_relocate_gprelhi
49 static void frv_info_to_howto_rela
51 static bfd_boolean elf32_frv_relocate_section
54 static bfd_boolean elf32_frv_add_symbol_hook
57 static bfd_reloc_status_type frv_final_link_relocate
60 static bfd_boolean elf32_frv_gc_sweep_hook
62 Elf_Internal_Rela *));
66 static bfd_boolean elf32_frv_check_relocs
69 static int elf32_frv_machine
71 static bfd_boolean elf32_frv_object_p
73 static bfd_boolean frv_elf_set_private_flags
75 static bfd_boolean frv_elf_copy_private_bfd_data
77 static bfd_boolean frv_elf_merge_private_bfd_data
79 static bfd_boolean frv_elf_print_private_bfd_data
83 {
84 /* This reloc does nothing. */
99 /* A 32 bit absolute relocation. */
114 /* A 16 bit pc-relative relocation. */
129 /* A 24-bit pc-relative relocation. */
242 /* A 12-bit signed operand with the GOT offset for the address of
243 the symbol. */
258 /* The upper 16 bits of the GOT offset for the address of the
259 symbol. */
274 /* The lower 16 bits of the GOT offset for the address of the
275 symbol. */
290 /* The 32-bit address of the canonical descriptor of a function. */
305 /* A 12-bit signed operand with the GOT offset for the address of
306 canonical descriptor of a function. */
321 /* The upper 16 bits of the GOT offset for the address of the
322 canonical descriptor of a function. */
337 /* The lower 16 bits of the GOT offset for the address of the
338 canonical descriptor of a function. */
353 /* The 32-bit address of the canonical descriptor of a function. */
368 /* A 12-bit signed operand with the GOT offset for the address of
369 canonical descriptor of a function. */
384 /* The upper 16 bits of the GOT offset for the address of the
385 canonical descriptor of a function. */
400 /* The lower 16 bits of the GOT offset for the address of the
401 canonical descriptor of a function. */
416 /* A 12-bit signed operand with the GOT offset for the address of
417 the symbol. */
432 /* The upper 16 bits of the GOT offset for the address of the
433 symbol. */
448 /* The lower 16 bits of the GOT offset for the address of the
449 symbol. */
464 };
466 /* GNU extension to record C++ vtable hierarchy. */
482 /* GNU extension to record C++ vtable member usage. */
498 /* The following 3 relocations are REL. The only difference to the
499 entries in the table above are that partial_inplace is TRUE. */
545 \f
546 /* Map BFD reloc types to FRV ELF reloc types. */
547 #if 0
548 struct frv_reloc_map
549 {
552 };
555 {
583 };
584 #endif
587 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec)
589 /* An extension of the elf hash table data structure, containing some
590 additional FRV-specific data. */
591 struct frvfdpic_elf_link_hash_table
592 {
595 /* A pointer to the .got section. */
597 /* A pointer to the .rel.got section. */
599 /* A pointer to the .rofixup section. */
601 /* A pointer to the .plt section. */
603 /* A pointer to the .rel.plt section. */
605 /* GOT base offset. */
606 bfd_vma got0;
607 /* Location of the first non-lazy PLT entry, i.e., the number of
608 bytes taken by lazy PLT entries. */
609 bfd_vma plt0;
610 /* A hash table holding information about which symbols were
611 referenced with which PIC-related relocations. */
613 };
615 /* Get the FRV ELF linker hash table from a link_info structure. */
617 #define frvfdpic_hash_table(info) \
618 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash))
620 #define frvfdpic_got_section(info) \
621 (frvfdpic_hash_table (info)->sgot)
622 #define frvfdpic_gotrel_section(info) \
623 (frvfdpic_hash_table (info)->sgotrel)
624 #define frvfdpic_gotfixup_section(info) \
625 (frvfdpic_hash_table (info)->sgotfixup)
626 #define frvfdpic_plt_section(info) \
627 (frvfdpic_hash_table (info)->splt)
628 #define frvfdpic_pltrel_section(info) \
629 (frvfdpic_hash_table (info)->spltrel)
630 #define frvfdpic_relocs_info(info) \
631 (frvfdpic_hash_table (info)->relocs_info)
632 #define frvfdpic_got_initial_offset(info) \
633 (frvfdpic_hash_table (info)->got0)
634 #define frvfdpic_plt_initial_offset(info) \
635 (frvfdpic_hash_table (info)->plt0)
637 /* Create an FRV ELF linker hash table. */
641 {
650 _bfd_elf_link_hash_newfunc))
651 {
654 }
657 }
659 /* Decide whether a reference to a symbol can be resolved locally or
660 not. If the symbol is protected, we want the local address, but
661 its function descriptor must be assigned by the dynamic linker. */
662 #define FRVFDPIC_SYM_LOCAL(INFO, H) \
663 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
664 || ! elf_hash_table (INFO)->dynamic_sections_created)
665 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \
666 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
668 /* This structure collects information on what kind of GOT, PLT or
669 function descriptors are required by relocations that reference a
670 certain symbol. */
671 struct frvfdpic_relocs_info
672 {
673 /* The index of the symbol, as stored in the relocation r_info, if
674 we have a local symbol; -1 otherwise. */
676 union
677 {
678 /* The input bfd in which the symbol is defined, if it's a local
679 symbol. */
681 /* If symndx == -1, the hash table entry corresponding to a global
682 symbol (even if it turns out to bind locally, in which case it
683 should ideally be replaced with section's symndx + addend). */
686 /* The addend of the relocation that references the symbol. */
687 bfd_vma addend;
689 /* The fields above are used to identify an entry. The fields below
690 contain information on how an entry is used and, later on, which
691 locations it was assigned. */
692 /* The following 3 fields record whether the symbol+addend above was
693 ever referenced with a GOT relocation. The 12 suffix indicates a
694 GOT12 relocation; los is used for GOTLO relocations that are not
695 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
696 pairs. */
700 /* Whether a FUNCDESC relocation references symbol+addend. */
702 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
706 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
710 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
711 GOTOFFHI relocations. The addend doesn't really matter, since we
712 envision that this will only be used to check whether the symbol
713 is mapped to the same segment as the got. */
715 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
717 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
718 relocation. */
720 /* Whether we need a PLT entry for a symbol. Should be implied by
721 something like:
722 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */
724 /* Whether a function descriptor should be created in this link unit
725 for symbol+addend. Should be implied by something like:
726 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
727 || ((fd || fdgot12 || fdgotlos || fdgothilo)
728 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
730 /* Whether a lazy PLT entry is needed for this symbol+addend.
731 Should be implied by something like:
732 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)
733 && ! (info->flags & DF_BIND_NOW)) */
735 /* Whether we've already emitted GOT relocations and PLT entries as
736 needed for this symbol. */
739 /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE
740 relocations referencing the symbol. */
743 /* The number of .rofixups entries and dynamic relocations allocated
744 for this symbol, minus any that might have already been used. */
747 /* The offsets of the GOT entries assigned to symbol+addend, to the
748 function descriptor's address, and to a function descriptor,
749 respectively. Should be zero if unassigned. The offsets are
750 counted from the value that will be assigned to the PIC register,
751 not from the beginning of the .got section. */
753 /* The offsets of the PLT entries assigned to symbol+addend,
754 non-lazy and lazy, respectively. If unassigned, should be
755 (bfd_vma)-1. */
757 };
759 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */
760 static hashval_t
762 {
768 }
770 /* Test whether the key fields of two frvfdpic_relocs_info entries are
771 identical. */
772 static int
774 {
780 }
782 /* Find or create an entry in a hash table HT that matches the key
783 fields of the given ENTRY. If it's not found, memory for a new
784 entry is allocated in ABFD's obstack. */
790 {
812 }
814 /* Obtain the address of the entry in HT associated with H's symbol +
815 addend, creating a new entry if none existed. ABFD is only used
816 for memory allocation purposes. */
821 bfd_vma addend,
823 {
831 }
833 /* Obtain the address of the entry in HT associated with the SYMNDXth
834 local symbol of the input bfd ABFD, plus the addend, creating a new
835 entry if none existed. */
840 bfd_vma addend,
842 {
850 }
852 /* Merge fields set by check_relocs() of two entries that end up being
853 mapped to the same (presumably global) symbol. */
858 {
873 #if 0
874 /* These are set in _frvfdpic_count_got_plt_entries() or later, and this
875 function is only called in _frvfdpic_resolve_final_relocs_info(), that
876 runs just before it, so we don't have to worry about the fields
877 below. */
901 #endif
902 }
904 /* Every block of 65535 lazy PLT entries shares a single call to the
905 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
906 32767, counting from 0). All other lazy PLT entries branch to it
907 in a single instruction. */
909 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
910 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767)
912 /* Add a dynamic relocation to the SRELOC section. */
918 {
919 Elf_Internal_Rela outrel;
920 bfd_vma reloc_offset;
932 /* If the entry's index is zero, this relocation was probably to a
933 linkonce section that got discarded. We reserved a dynamic
934 relocation, but it was for another entry than the one we got at
935 the time of emitting the relocation. Unfortunately there's no
936 simple way for us to catch this situation, since the relocation
937 is cleared right before calling relocate_section, at which point
938 we no longer know what the relocation used to point to. */
940 {
943 }
946 }
948 /* Add a fixup to the ROFIXUP section. */
950 static bfd_vma
953 {
954 bfd_vma fixup_offset;
961 {
964 }
968 {
969 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc
970 above. */
973 }
976 }
978 /* Find the segment number in which OSEC, and output section, is
979 located. */
981 static unsigned
983 {
987 /* Find the segment that contains the output_section. */
992 {
1001 }
1004 }
1008 {
1012 }
1014 /* Generate relocations for GOT entries, function descriptors, and
1015 code for PLT and lazy PLT entries. */
1023 bfd_vma addend)
1025 {
1034 {
1035 /* If the symbol is dynamic, consider it for dynamic
1036 relocations, otherwise decay to section + offset. */
1039 else
1040 {
1045 else
1047 }
1048 }
1050 /* Generate relocation for GOT entry pointing to the symbol. */
1052 {
1056 /* If the symbol is dynamic but binds locally, use
1057 section+offset. */
1060 {
1063 else
1068 else
1070 }
1072 /* If we're linking an executable at a fixed address, we can
1073 omit the dynamic relocation as long as the symbol is local to
1074 this module. */
1078 {
1086 ->vma
1090 }
1091 else
1093 _bfd_elf_section_offset
1107 }
1109 /* Generate relocation for GOT entry pointing to a canonical
1110 function descriptor. */
1112 {
1119 {
1120 /* If the symbol is dynamic and there may be dynamic symbol
1121 resolution because we are, or are linked with, a shared
1122 library, emit a FUNCDESC relocation such that the dynamic
1123 linker will allocate the function descriptor. If the
1124 symbol needs a non-local function descriptor but binds
1125 locally (e.g., its visibility is protected, emit a
1126 dynamic relocation decayed to section+offset. */
1131 {
1137 }
1140 {
1146 }
1147 else
1148 {
1149 /* Otherwise, we know we have a private function descriptor,
1150 so reference it directly. */
1158 }
1160 /* If there is room for dynamic symbol resolution, emit the
1161 dynamic relocation. However, if we're linking an
1162 executable at a fixed location, we won't have emitted a
1163 dynamic symbol entry for the got section, so idx will be
1164 zero, which means we can and should compute the address
1165 of the private descriptor ourselves. */
1169 {
1176 ->output_offset
1179 }
1180 else
1183 _bfd_elf_section_offset
1193 }
1199 }
1201 /* Generate relocation to fill in a private function descriptor in
1202 the GOT. */
1204 {
1207 bfd_vma ofst;
1210 /* If the symbol is dynamic but binds locally, use
1211 section+offset. */
1214 {
1217 else
1222 else
1224 }
1226 /* If we're linking an executable at a fixed address, we can
1227 omit the dynamic relocation as long as the symbol is local to
1228 this module. */
1231 {
1237 {
1243 ->output_offset
1251 ->output_offset
1254 }
1255 }
1256 else
1257 {
1258 ofst =
1260 entry->lazyplt
1263 _bfd_elf_section_offset
1273 }
1275 /* If we've omitted the dynamic relocation, just emit the fixed
1276 addresses of the symbol and of the local GOT base offset. */
1278 {
1283 }
1285 {
1291 /* A function descriptor used for lazy or local resolving is
1292 initialized such that its high word contains the output
1293 section index in which the PLT entries are located, and
1294 the low word contains the address of the lazy PLT entry
1295 entry point, that must be within the memory region
1296 assigned to that section. */
1300 highword = _frvfdpic_osec_to_segment
1302 }
1303 else
1304 {
1305 /* A function descriptor for a local function gets the index
1306 of the section. For a non-local function, it's
1307 disregarded. */
1312 else
1313 highword = _frvfdpic_osec_to_segment
1315 }
1325 }
1327 /* Generate code for the PLT entry. */
1329 {
1335 /* Figure out what kind of PLT entry we need, depending on the
1336 location of the function descriptor within the GOT. */
1339 {
1340 /* lddi @(gr15, fd_entry), gr14 */
1343 plt_code);
1345 }
1346 else
1347 {
1350 {
1351 /* setlos lo(fd_entry), gr14 */
1353 0x9cfc0000
1355 plt_code);
1357 }
1358 else
1359 {
1360 /* sethi.p hi(fd_entry), gr14
1361 setlo lo(fd_entry), gr14 */
1363 0x1cf80000
1366 plt_code);
1368 0x9cf40000
1370 plt_code);
1372 }
1373 /* ldd @(gr14,gr15),gr14 */
1376 }
1377 /* jmpl @(gr14,gr0) */
1379 }
1381 /* Generate code for the lazy PLT entry. */
1383 {
1386 bfd_vma resolverStub_addr;
1397 {
1398 /* This is a lazy PLT entry that includes a resolver call. */
1399 /* ldd @(gr15,gr0), gr4
1400 jmpl @(gr4,gr0) */
1403 }
1404 else
1405 {
1406 /* bra resolverStub */
1408 0xc01a0000
1411 lzplt_code);
1412 }
1413 }
1416 }
1418 /* Handle an FRV small data reloc. */
1420 static bfd_reloc_status_type
1428 bfd_vma value;
1429 {
1430 bfd_vma insn;
1431 bfd_vma gp;
1455 }
1457 /* Handle an FRV small data reloc. for the u12 field. */
1459 static bfd_reloc_status_type
1467 bfd_vma value;
1468 {
1469 bfd_vma insn;
1470 bfd_vma gp;
1472 bfd_vma mask;
1490 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
1497 }
1499 /* Handle an FRV ELF HI16 reloc. */
1501 static bfd_reloc_status_type
1506 bfd_vma value;
1507 {
1508 bfd_vma insn;
1523 }
1524 static bfd_reloc_status_type
1529 bfd_vma value;
1530 {
1531 bfd_vma insn;
1545 }
1547 /* Perform the relocation for the CALL label24 instruction. */
1549 static bfd_reloc_status_type
1555 bfd_vma value;
1556 {
1557 bfd_vma insn;
1558 bfd_vma label6;
1559 bfd_vma label18;
1561 /* The format for the call instruction is:
1563 0 000000 0001111 000000000000000000
1564 label6 opcode label18
1566 The branch calculation is: pc + (4*label24)
1567 where label24 is the concatenation of label6 and label18. */
1569 /* Grab the instruction. */
1590 }
1592 static bfd_reloc_status_type
1600 bfd_vma value;
1601 {
1602 bfd_vma insn;
1603 bfd_vma gp;
1625 }
1627 static bfd_reloc_status_type
1635 bfd_vma value;
1636 {
1637 bfd_vma insn;
1638 bfd_vma gp;
1661 }
1666 bfd_reloc_code_real_type code;
1667 {
1669 {
1680 /* Fall through. */
1764 }
1767 }
1769 /* Set the howto pointer for an FRV ELF reloc. */
1771 static void
1776 {
1781 {
1793 }
1794 }
1796 /* Set the howto pointer for an FRV ELF REL reloc. */
1797 static void
1800 {
1805 {
1821 }
1822 }
1823 \f
1824 /* Perform a single relocation. By default we use the standard BFD
1825 routines, but a few relocs, we have to do them ourselves. */
1827 static bfd_reloc_status_type
1829 relocation)
1835 bfd_vma relocation;
1836 {
1840 }
1842 \f
1843 /* Relocate an FRV ELF section.
1845 The RELOCATE_SECTION function is called by the new ELF backend linker
1846 to handle the relocations for a section.
1848 The relocs are always passed as Rela structures; if the section
1849 actually uses Rel structures, the r_addend field will always be
1850 zero.
1852 This function is responsible for adjusting the section contents as
1853 necessary, and (if using Rela relocs and generating a relocatable
1854 output file) adjusting the reloc addend as necessary.
1856 This function does not have to worry about setting the reloc
1857 address or the reloc symbol index.
1859 LOCAL_SYMS is a pointer to the swapped in local symbols.
1861 LOCAL_SECTIONS is an array giving the section in the input file
1862 corresponding to the st_shndx field of each local symbol.
1864 The global hash table entry for the global symbols can be found
1865 via elf_sym_hashes (input_bfd).
1867 When generating relocatable output, this function must handle
1868 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1869 going to be the section symbol corresponding to the output
1870 section, which means that the addend must be adjusted
1871 accordingly. */
1873 static bfd_boolean
1884 {
1906 else
1912 else
1918 else
1922 {
1928 bfd_vma relocation;
1929 bfd_reloc_status_type r;
1942 /* This is a final link. */
1950 {
1955 name = bfd_elf_string_from_elf_section
1958 }
1959 else
1960 {
1972 {
1975 }
1976 else
1979 {
1984 }
1986 {
1988 }
1992 else
1993 {
2001 }
2003 }
2006 {
2030 else
2031 /* In order to find the entry we created before, we must
2032 use the original addend, not the one that may have been
2033 modified by _bfd_elf_rela_local_sym(). */
2043 {
2049 }
2054 non_fdpic:
2057 {
2062 }
2064 }
2067 {
2073 {
2078 }
2079 /* We don't want to warn on calls to undefined weak symbols,
2080 as calls to them must be protected by non-NULL tests
2081 anyway, and unprotected calls would invoke undefined
2082 behavior. */
2086 else
2126 {
2132 {
2133 /* If the symbol is dynamic and there may be dynamic
2134 symbol resolution because we are or are linked with a
2135 shared library, emit a FUNCDESC relocation such that
2136 the dynamic linker will allocate the function
2137 descriptor. If the symbol needs a non-local function
2138 descriptor but binds locally (e.g., its visibility is
2139 protected, emit a dynamic relocation decayed to
2140 section+offset. */
2144 {
2149 }
2151 {
2153 {
2158 }
2160 }
2161 else
2162 {
2163 /* Otherwise, we know we have a private function
2164 descriptor, so reference it directly. */
2172 }
2174 /* If there is room for dynamic symbol resolution, emit
2175 the dynamic relocation. However, if we're linking an
2176 executable at a fixed location, we won't have emitted a
2177 dynamic symbol entry for the got section, so idx will
2178 be zero, which means we can and should compute the
2179 address of the private descriptor ourselves. */
2182 {
2187 {
2189 input_section
2191 {
2197 }
2199 frvfdpic_gotfixup_section
2201 _bfd_elf_section_offset
2204 + input_section
2207 picrel);
2208 }
2209 }
2213 {
2215 input_section
2217 {
2223 }
2226 _bfd_elf_section_offset
2229 + input_section
2233 }
2234 else
2236 }
2238 /* We want the addend in-place because dynamic
2239 relocations are REL. Setting relocation to it should
2240 arrange for it to be installed. */
2242 }
2248 {
2251 }
2252 /* Fall through. */
2254 {
2258 /* If the symbol is dynamic but binds locally, use
2259 section+offset. */
2261 {
2263 {
2268 }
2270 }
2271 else
2272 {
2275 else
2283 else
2285 }
2287 /* If we're linking an executable at a fixed address, we
2288 can omit the dynamic relocation as long as the symbol
2289 is defined in the current link unit (which is implied
2290 by its output section not being NULL). */
2293 {
2300 {
2302 input_section
2304 {
2310 }
2312 {
2314 frvfdpic_gotfixup_section
2316 _bfd_elf_section_offset
2319 + input_section
2322 picrel);
2324 _frvfdpic_add_rofixup
2327 _bfd_elf_section_offset
2332 }
2333 }
2334 }
2335 else
2336 {
2340 {
2342 input_section
2344 {
2350 }
2353 _bfd_elf_section_offset
2356 + input_section
2360 }
2363 /* We want the addend in-place because dynamic
2364 relocations are REL. Setting relocation to it
2365 should arrange for it to be installed. */
2367 }
2370 {
2371 /* If we've omitted the dynamic relocation, just emit
2372 the fixed addresses of the symbol and of the local
2373 GOT base offset. */
2381 else
2382 /* A function descriptor used for lazy or local
2383 resolving is initialized such that its high word
2384 contains the output section index in which the
2385 PLT entries are located, and the low word
2386 contains the offset of the lazy PLT entry entry
2387 point into that section. */
2392 sec
2395 }
2396 }
2417 }
2420 {
2422 in the ld testsuite. */
2423 /* This helps catch problems in GCC while we can't do more
2424 than static linking. The idea is to test whether the
2425 input file basename is crt0.o only once. */
2427 silence_segment_error =
2435 #endif
2437 /* We don't want duplicate errors for undefined
2438 symbols. */
2450 }
2453 {
2455 /* We need the addend to be applied before we shift the
2456 value right. */
2458 /* Fall through. */
2463 /* Fall through. */
2474 }
2477 {
2481 /* Fall through. */
2483 /* When referencing a GOT entry, a function descriptor or a
2484 PLT, we don't want the addend to apply to the reference,
2485 but rather to the referenced symbol. The actual entry
2486 will have already been created taking the addend into
2487 account, so cancel it out here. */
2497 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
2498 here, since we do want to apply the addend to the others.
2499 Note that we've applied the addend to GOTOFFHI before we
2500 shifted it right. */
2507 }
2535 else
2540 {
2544 {
2571 }
2579 }
2580 }
2583 }
2584 \f
2585 /* Return the section that should be marked against GC for a given
2586 relocation. */
2595 {
2597 {
2599 {
2606 {
2616 }
2617 }
2618 }
2619 else
2623 }
2625 /* Update the got entry reference counts for the section being removed. */
2627 static bfd_boolean
2633 {
2635 }
2637 \f
2638 /* Hook called by the linker routine which adds symbols from an object
2639 file. We use it to put .comm items in .scomm, and not .comm. */
2641 static bfd_boolean
2650 {
2654 {
2655 /* Common symbols less than or equal to -G nn bytes are
2656 automatically put into .sbss. */
2661 {
2665 | SEC_IS_COMMON
2668 }
2672 }
2675 }
2677 /* We need dynamic symbols for every section, since segments can
2678 relocate independently. */
2679 static bfd_boolean
2682 ATTRIBUTE_UNUSED,
2684 {
2686 {
2689 /* If sh_type is yet undecided, assume it could be
2690 SHT_PROGBITS/SHT_NOBITS. */
2694 /* There shouldn't be section relative relocations
2695 against any other section. */
2698 }
2699 }
2701 /* Create a .got section, as well as its additional info field. This
2702 is almost entirely copied from
2703 elflink.c:_bfd_elf_create_got_section(). */
2705 static bfd_boolean
2707 {
2708 flagword flags;
2716 /* This function may be called more than once. */
2721 /* Machine specific: although pointers are 32-bits wide, we want the
2722 GOT to be aligned to a 64-bit boundary, such that function
2723 descriptors in it can be accessed with 64-bit loads and
2724 stores. */
2737 {
2743 }
2746 {
2747 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
2748 (or .got.plt) section. We don't do this in the linker script
2749 because we don't want to define the symbol if we are not creating
2750 a global offset table. */
2761 /* Machine-specific: we want the symbol for executables as
2762 well. */
2767 }
2769 /* The first bit of the global offset table is the header. */
2772 /* This is the machine-specific part. Create and initialize section
2773 data for the got. */
2775 {
2778 frvfdpic_relocs_info_eq,
2791 /* Machine-specific. */
2801 }
2802 else
2803 {
2806 }
2808 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it
2809 turns out that we're linking with a different linker script, the
2810 linker script will override it. */
2820 /* Machine-specific: we want the symbol for executables as well. */
2825 }
2827 /* Make sure the got and plt sections exist, and that our pointers in
2828 the link hash table point to them. */
2830 static bfd_boolean
2832 {
2833 /* This is mostly copied from
2834 elflink.c:_bfd_elf_create_dynamic_sections(). */
2839 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2840 .rel[a].bss sections. */
2857 /* FRV-specific: remember it. */
2861 {
2862 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2863 .plt section. */
2878 }
2880 /* FRV-specific: we want rel relocations for the plt. */
2886 /* FRV-specific: remember it. */
2889 /* FRV-specific: we want to create the GOT in the FRV way. */
2893 /* FRV-specific: make sure we created everything we wanted. */
2900 {
2901 /* The .dynbss section is a place to put symbols which are defined
2902 by dynamic objects, are referenced by regular objects, and are
2903 not functions. We must allocate space for them in the process
2904 image and use a R_*_COPY reloc to tell the dynamic linker to
2905 initialize them at run time. The linker script puts the .dynbss
2906 section into the .bss section of the final image. */
2912 /* The .rel[a].bss section holds copy relocs. This section is not
2913 normally needed. We need to create it here, though, so that the
2914 linker will map it to an output section. We can't just create it
2915 only if we need it, because we will not know whether we need it
2916 until we have seen all the input files, and the first time the
2917 main linker code calls BFD after examining all the input files
2918 (size_dynamic_sections) the input sections have already been
2919 mapped to the output sections. If the section turns out not to
2920 be needed, we can discard it later. We will never need this
2921 section when generating a shared object, since they do not use
2922 copy relocs. */
2924 {
2932 }
2933 }
2936 }
2938 /* The name of the dynamic interpreter. This is put in the .interp
2939 section. */
2943 #define DEFAULT_STACK_SIZE 0x20000
2945 /* This structure is used to collect the number of entries present in
2946 each addressable range of the got. */
2947 struct _frvfdpic_dynamic_got_info
2948 {
2949 /* Several bits of information about the current link. */
2951 /* Total size needed for GOT entries within the 12-, 16- or 32-bit
2952 ranges. */
2954 /* Total size needed for function descriptor entries within the 12-,
2955 16- or 32-bit ranges. */
2957 /* Total size needed function descriptor entries referenced in PLT
2958 entries, that would be profitable to place in offsets close to
2959 the PIC register. */
2960 bfd_vma fdplt;
2961 /* Total size needed by lazy PLT entries. */
2962 bfd_vma lzplt;
2963 /* Number of relocations carried over from input object files. */
2965 /* Number of fixups introduced by relocations in input object files. */
2967 };
2969 /* Compute the total GOT size required by each symbol in each range.
2970 Symbols may require up to 4 words in the GOT: an entry pointing to
2971 the symbol, an entry pointing to its function descriptor, and a
2972 private function descriptors taking two words. */
2974 static int
2976 {
2981 /* Allocate space for a GOT entry pointing to the symbol. */
2988 else
2992 /* Allocate space for a GOT entry pointing to the function
2993 descriptor. */
3000 else
3004 /* Decide whether we need a PLT entry, a function descriptor in the
3005 GOT, and a lazy PLT entry for this symbol. */
3019 /* Allocate space for a function descriptor. */
3028 else
3037 else
3038 {
3040 {
3044 }
3045 else
3050 {
3054 }
3055 else
3057 }
3065 }
3067 /* This structure is used to assign offsets to got entries, function
3068 descriptors, plt entries and lazy plt entries. */
3070 struct _frvfdpic_dynamic_got_plt_info
3071 {
3072 /* Summary information collected with _frvfdpic_count_got_plt_entries. */
3075 /* For each addressable range, we record a MAX (positive) and MIN
3076 (negative) value. CUR is used to assign got entries, and it's
3077 incremented from an initial positive value to MAX, then from MIN
3078 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3079 assign function descriptors, and it's decreased from an initial
3080 non-positive value to MIN, then from MAX down to CUR (unless CUR
3081 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3082 to even words. ODD, if non-zero, indicates an odd word to be
3083 used for the next got entry, otherwise CUR is used and
3084 incremented by a pair of words, wrapping around when it reaches
3085 MAX. FDCUR is decremented (and wrapped) before the next function
3086 descriptor is chosen. FDPLT indicates the number of remaining
3087 slots that can be used for function descriptors used only by PLT
3088 entries. */
3089 struct _frvfdpic_dynamic_got_alloc_data
3090 {
3092 bfd_vma fdplt;
3094 };
3096 /* Determine the positive and negative ranges to be used by each
3097 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3098 double-word boundary, are the minimum (negative) and maximum
3099 (positive) GOT offsets already used by previous ranges, except for
3100 an ODD entry that may have been left behind. GOT and FD indicate
3101 the size of GOT entries and function descriptors that must be
3102 placed within the range from -WRAP to WRAP. If there's room left,
3103 up to FDPLT bytes should be reserved for additional function
3104 descriptors. */
3108 bfd_signed_vma fdcur,
3109 bfd_signed_vma odd,
3110 bfd_signed_vma cur,
3111 bfd_vma got,
3112 bfd_vma fd,
3113 bfd_vma fdplt,
3114 bfd_vma wrap)
3115 {
3118 /* Start at the given initial points. */
3122 /* If we had an incoming odd word and we have any got entries that
3123 are going to use it, consume it, otherwise leave gad->odd at
3124 zero. We might force gad->odd to zero and return the incoming
3125 odd such that it is used by the next range, but then GOT entries
3126 might appear to be out of order and we wouldn't be able to
3127 shorten the GOT by one word if it turns out to end with an
3128 unpaired GOT entry. */
3130 {
3134 }
3135 else
3138 /* If we're left with an unpaired GOT entry, compute its location
3139 such that we can return it. Otherwise, if got doesn't require an
3140 odd number of words here, either odd was already zero in the
3141 block above, or it was set to zero because got was non-zero, or
3142 got was already zero. In the latter case, we want the value of
3143 odd to carry over to the return statement, so we don't want to
3144 reset odd unless the condition below is true. */
3146 {
3149 }
3151 /* Compute the tentative boundaries of this range. */
3156 /* If function descriptors took too much space, wrap some of them
3157 around. */
3159 {
3162 }
3163 /* If there is space left and we have function descriptors
3164 referenced in PLT entries that could take advantage of shorter
3165 offsets, place them here. */
3167 {
3168 bfd_vma fds;
3171 else
3177 }
3179 /* If GOT entries took too much space, wrap some of them around.
3180 This may well cause gad->min to become lower than wrapmin. This
3181 will cause a relocation overflow later on, so we don't have to
3182 report it here . */
3184 {
3187 }
3188 /* If there is more space left, try to place some more function
3189 descriptors for PLT entries. */
3191 {
3192 bfd_vma fds;
3195 else
3201 }
3203 /* If odd was initially computed as an offset past the wrap point,
3204 wrap it around. */
3208 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed
3209 before returning, so do it here too. This guarantees that,
3210 should cur and fdcur meet at the wrap point, they'll both be
3211 equal to min. */
3216 }
3218 /* Compute the location of the next GOT entry, given the allocation
3219 data for a range. */
3223 {
3224 bfd_signed_vma ret;
3227 {
3228 /* If there was an odd word left behind, use it. */
3231 }
3232 else
3233 {
3234 /* Otherwise, use the word pointed to by cur, reserve the next
3235 as an odd word, and skip to the next pair of words, possibly
3236 wrapping around. */
3242 }
3245 }
3247 /* Compute the location of the next function descriptor entry in the
3248 GOT, given the allocation data for a range. */
3252 {
3253 /* If we're at the bottom, wrap around, and only then allocate the
3254 next pair of words. */
3258 }
3260 /* Assign GOT offsets for every GOT entry and function descriptor.
3261 Doing everything in a single pass is tricky. */
3263 static int
3265 {
3286 {
3289 }
3293 {
3296 }
3298 {
3301 }
3306 }
3308 /* Assign GOT offsets to private function descriptors used by PLT
3309 entries (or referenced by 32-bit offsets), as well as PLT entries
3310 and lazy PLT entries. */
3312 static int
3314 {
3318 /* If this symbol requires a local function descriptor, allocate
3319 one. */
3321 {
3323 {
3326 }
3328 {
3331 }
3332 else
3333 {
3337 }
3338 }
3341 {
3344 /* We use the section's raw size to mark the location of the
3345 next PLT entry. */
3348 /* Figure out the length of this PLT entry based on the
3349 addressing mode we need to reach the function descriptor. */
3357 else
3361 }
3364 {
3367 /* If this entry is the one that gets the resolver stub, account
3368 for the additional instruction. */
3372 }
3375 }
3377 /* Follow indirect and warning hash entries so that each got entry
3378 points to the final symbol definition. P must point to a pointer
3379 to the hash table we're traversing. Since this traversal may
3380 modify the hash table, we set this pointer to NULL to indicate
3381 we've made a potentially-destructive change to the hash table, so
3382 the traversal must be restarted. */
3383 static int
3385 {
3390 {
3402 NO_INSERT);
3405 {
3406 /* Merge the two entries. */
3410 }
3414 /* If we can't find this entry with the new bfd hash, re-insert
3415 it, and get the traversal restarted. */
3417 {
3422 /* Abort the traversal, since the whole table may have
3423 moved, and leave it up to the parent to restart the
3424 process. */
3427 }
3428 }
3431 }
3433 /* Set the sizes of the dynamic sections. */
3435 static bfd_boolean
3438 {
3442 bfd_signed_vma odd;
3443 bfd_vma limit;
3449 {
3450 /* Set the contents of the .interp section to the interpreter. */
3452 {
3457 }
3458 }
3464 {
3471 }
3477 /* Compute the total size taken by entries in the 12-bit and 16-bit
3478 ranges, to tell how many PLT function descriptors we can bring
3479 into the 12-bit range without causing the 16-bit range to
3480 overflow. */
3485 else
3490 /* Determine the ranges of GOT offsets that we can use for each
3491 range of addressing modes. */
3494 odd,
3498 limit,
3502 odd,
3510 odd,
3518 /* Now assign (most) GOT offsets. */
3524 /* If an odd word is the last word of the GOT, we don't need this
3525 word to be part of the GOT. */
3531 {
3534 }
3535 else
3536 {
3542 }
3545 /* Subtract the number of lzplt entries, since those will generate
3546 relocations in the pltrel section. */
3550 else
3554 else
3555 {
3561 }
3566 else
3567 {
3573 }
3576 {
3581 else
3582 {
3588 }
3589 }
3591 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
3592 such that there's room for the additional instruction needed to
3593 call the resolver. Since _frvfdpic_assign_got_entries didn't
3594 account for them, our block size is 4 bytes smaller than the real
3595 block size. */
3597 {
3601 }
3603 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to
3604 actually assign lazy PLT entries addresses. */
3607 /* Save information that we're going to need to generate GOT and PLT
3608 entries. */
3622 /* Allocate the PLT section contents only after
3623 _frvfdpic_assign_plt_entries has a chance to add the size of the
3624 non-lazy PLT entries. */
3626 {
3629 else
3630 {
3636 }
3637 }
3640 {
3657 }
3660 }
3662 static bfd_boolean
3665 {
3667 {
3671 /* Force a PT_GNU_STACK segment to be created. */
3675 /* Define __stacksize if it's not defined yet. */
3681 {
3694 }
3696 /* Create a stack section, and set its alignment. */
3702 }
3705 }
3707 static bfd_boolean
3710 {
3713 /* objcopy and strip preserve what's already there using
3714 elf32_frvfdpic_copy_private_bfd_data (). */
3723 {
3728 {
3729 /* Obtain the pointer to the __stacksize symbol. */
3737 /* Set the section size from the symbol value. We
3738 intentionally ignore the symbol section. */
3741 else
3744 /* Add the stack section to the PT_GNU_STACK segment,
3745 such that its size and alignment requirements make it
3746 to the segment. */
3749 }
3750 }
3753 }
3755 /* Fill in code and data in dynamic sections. */
3757 static bfd_boolean
3760 {
3761 /* Nothing to be done for non-FDPIC. */
3763 }
3765 static bfd_boolean
3768 {
3775 {
3781 {
3792 {
3796 }
3797 }
3798 }
3800 {
3804 }
3809 {
3819 {
3820 Elf_Internal_Dyn dyn;
3825 {
3847 }
3848 }
3849 }
3852 }
3854 /* Adjust a symbol defined by a dynamic object and referenced by a
3855 regular object. */
3857 static bfd_boolean
3858 elf32_frvfdpic_adjust_dynamic_symbol
3861 {
3866 /* Make sure we know what is going on here. */
3873 /* If this is a weak symbol, and there is a real definition, the
3874 processor independent code will have arranged for us to see the
3875 real definition first, and we can just use the same value. */
3877 {
3882 }
3885 }
3887 /* Perform any actions needed for dynamic symbols. */
3889 static bfd_boolean
3890 elf32_frvfdpic_finish_dynamic_symbol
3895 {
3897 }
3899 /* Decide whether to attempt to turn absptr or lsda encodings in
3900 shared libraries into pcrel within the given input section. */
3902 static bfd_boolean
3903 frvfdpic_elf_use_relative_eh_frame
3907 {
3908 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
3910 }
3912 /* Adjust the contents of an eh_frame_hdr section before they're output. */
3914 static bfd_byte
3920 {
3932 == (_frvfdpic_osec_to_segment
3941 }
3943 /* Look through the relocs for a section during the first phase.
3945 Besides handling virtual table relocs for gc, we have to deal with
3946 all sorts of PIC-related relocations. We describe below the
3947 general plan on how to handle such relocations, even though we only
3948 collect information at this point, storing them in hash tables for
3949 perusal of later passes.
3951 32 relocations are propagated to the linker output when creating
3952 position-independent output. LO16 and HI16 relocations are not
3953 supposed to be encountered in this case.
3955 LABEL16 should always be resolvable by the linker, since it's only
3956 used by branches.
3958 LABEL24, on the other hand, is used by calls. If it turns out that
3959 the target of a call is a dynamic symbol, a PLT entry must be
3960 created for it, which triggers the creation of a private function
3961 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
3963 GPREL relocations require the referenced symbol to be in the same
3964 segment as _gp, but this can only be checked later.
3966 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
3967 exist. LABEL24 might as well, since it may require a PLT entry,
3968 that will require a got.
3970 Non-FUNCDESC GOT relocations require a GOT entry to be created
3971 regardless of whether the symbol is dynamic. However, since a
3972 global symbol that turns out to not be exported may have the same
3973 address of a non-dynamic symbol, we don't assign GOT entries at
3974 this point, such that we can share them in this case. A relocation
3975 for the GOT entry always has to be created, be it to offset a
3976 private symbol by the section load address, be it to get the symbol
3977 resolved dynamically.
3979 FUNCDESC GOT relocations require a GOT entry to be created, and
3980 handled as if a FUNCDESC relocation was applied to the GOT entry in
3981 an object file.
3983 FUNCDESC relocations referencing a symbol that turns out to NOT be
3984 dynamic cause a private function descriptor to be created. The
3985 FUNCDESC relocation then decays to a 32 relocation that points at
3986 the private descriptor. If the symbol is dynamic, the FUNCDESC
3987 relocation is propagated to the linker output, such that the
3988 dynamic linker creates the canonical descriptor, pointing to the
3989 dynamically-resolved definition of the function.
3991 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
3992 symbols that are assigned to the same segment as the GOT, but we
3993 can only check this later, after we know the complete set of
3994 symbols defined and/or exported.
3996 FUNCDESC GOTOFF relocations require a function descriptor to be
3997 created and, unless lazy binding is disabled or the symbol is not
3998 dynamic, a lazy PLT entry. Since we can't tell at this point
3999 whether a symbol is going to be dynamic, we have to decide later
4000 whether to create a lazy PLT entry or bind the descriptor directly
4001 to the private function.
4003 FUNCDESC_VALUE relocations are not supposed to be present in object
4004 files, but they may very well be simply propagated to the linker
4005 output, since they have no side effect.
4008 A function descriptor always requires a FUNCDESC_VALUE relocation.
4009 Whether it's in .plt.rel or not depends on whether lazy binding is
4010 enabled and on whether the referenced symbol is dynamic.
4012 The existence of a lazy PLT requires the resolverStub lazy PLT
4013 entry to be present.
4016 As for assignment of GOT, PLT and lazy PLT entries, and private
4017 descriptors, we might do them all sequentially, but we can do
4018 better than that. For example, we can place GOT entries and
4019 private function descriptors referenced using 12-bit operands
4020 closer to the PIC register value, such that these relocations don't
4021 overflow. Those that are only referenced with LO16 relocations
4022 could come next, but we may as well place PLT-required function
4023 descriptors in the 12-bit range to make them shorter. Symbols
4024 referenced with LO16/HI16 may come next, but we may place
4025 additional function descriptors in the 16-bit range if we can
4026 reliably tell that we've already placed entries that are ever
4027 referenced with only LO16. PLT entries are therefore generated as
4028 small as possible, while not introducing relocation overflows in
4029 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4030 generated before or after PLT entries, but not intermingled with
4031 them, such that we can have more lazy PLT entries in range for a
4032 branch to the resolverStub. The resolverStub should be emitted at
4033 the most distant location from the first lazy PLT entry such that
4034 it's still in range for a branch, or closer, if there isn't a need
4035 for so many lazy PLT entries. Additional lazy PLT entries may be
4036 emitted after the resolverStub, as long as branches are still in
4037 range. If the branch goes out of range, longer lazy PLT entries
4038 are emitted.
4040 We could further optimize PLT and lazy PLT entries by giving them
4041 priority in assignment to closer-to-gr17 locations depending on the
4042 number of occurrences of references to them (assuming a function
4043 that's called more often is more important for performance, so its
4044 PLT entry should be faster), or taking hints from the compiler.
4045 Given infinite time and money... :-) */
4047 static bfd_boolean
4053 {
4073 {
4080 else
4084 {
4101 /* Fall through. */
4109 {
4113 }
4115 {
4118 }
4120 {
4123 {
4130 }
4131 picrel
4135 }
4136 else
4147 }
4150 {
4160 /* Fall through. */
4209 /* This relocation describes the C++ object vtable hierarchy.
4210 Reconstruct it for later use during GC. */
4216 /* This relocation describes which C++ vtable entries are actually
4217 used. Record for later use during GC. */
4234 bad_reloc:
4239 }
4240 }
4243 }
4245 \f
4246 /* Return the machine subcode from the ELF e_flags header. */
4248 static int
4251 {
4253 {
4263 }
4266 }
4268 /* Set the right machine number for a FRV ELF file. */
4270 static bfd_boolean
4273 {
4277 }
4278 \f
4279 /* Function to set the ELF flag bits. */
4281 static bfd_boolean
4284 flagword flags;
4285 {
4289 }
4291 /* Copy backend specific data from one object module to another. */
4293 static bfd_boolean
4297 {
4308 }
4310 /* Return true if the architecture described by elf header flag
4311 EXTENSION is an extension of the architecture described by BASE. */
4313 static bfd_boolean
4315 {
4319 /* CPU_GENERIC code can be merged with code for a specific
4320 architecture, in which case the result is marked as being
4321 for the specific architecture. Everything is therefore
4322 an extension of CPU_GENERIC. */
4335 }
4337 static bfd_boolean
4339 {
4353 /* Copy the stack size. */
4356 {
4361 {
4364 /* Rewrite the phdrs, since we're only called after they
4365 were first written. */
4373 }
4376 }
4379 }
4381 /* Merge backend specific data from an object file to the output
4382 object file when linking. */
4384 static bfd_boolean
4388 {
4402 #ifdef DEBUG
4406 #endif
4409 {
4412 }
4415 ;
4418 {
4419 /* Warn if different # of gprs are used. Note, 0 means nothing is
4420 said about the size of gprs. */
4424 ;
4427 ;
4432 else
4433 {
4435 {
4439 }
4442 {
4446 }
4447 }
4449 /* Warn if different # of fprs are used. Note, 0 means nothing is
4450 said about the size of fprs. */
4454 ;
4457 ;
4462 else
4463 {
4465 {
4470 }
4473 {
4478 }
4479 }
4481 /* Warn if different dword support was used. Note, 0 means nothing is
4482 said about the dword support. */
4486 ;
4489 ;
4494 else
4495 {
4497 {
4501 }
4504 {
4508 }
4509 }
4511 /* Or in flags that accumulate (ie, if one module uses it, mark that the
4512 feature is used. */
4514 | EF_FRV_MEDIA
4515 | EF_FRV_MULADD
4518 /* If any module was compiled without -G0, clear the G0 bit. */
4522 /* If any module was compiled without -mnopack, clear the mnopack bit. */
4526 /* We don't have to do anything if the pic flags are the same, or the new
4527 module(s) were compiled with -mlibrary-pic. */
4531 ;
4533 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
4534 flags if any from the new module. */
4538 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
4542 /* One module was compiled for pic and the other was not, see if we have
4543 had any relocations that are not pic-safe. */
4544 else
4545 {
4548 else
4549 {
4551 #ifndef FRV_NO_PIC_ERROR
4557 #endif
4558 }
4559 }
4561 /* Warn if different cpu is used (allow a specific cpu to override
4562 the generic cpu). */
4566 ;
4571 else
4572 {
4574 {
4585 }
4588 {
4599 }
4600 }
4602 /* Print out any mismatches from above. */
4604 {
4609 }
4611 /* Warn about any other mismatches */
4615 {
4621 }
4622 }
4624 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
4628 /* Update the old flags now with changes made above. */
4636 {
4642 else
4646 }
4652 }
4654 \f
4655 bfd_boolean
4658 PTR ptr;
4659 {
4661 flagword flags;
4665 /* Print normal ELF private data. */
4672 {
4682 }
4685 {
4689 }
4692 {
4697 }
4700 {
4704 }
4735 }
4737 \f
4738 #define ELF_ARCH bfd_arch_frv
4739 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
4740 #define ELF_MAXPAGESIZE 0x1000
4742 #define TARGET_BIG_SYM bfd_elf32_frv_vec
4745 #define elf_info_to_howto frv_info_to_howto_rela
4746 #define elf_backend_relocate_section elf32_frv_relocate_section
4747 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
4748 #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook
4749 #define elf_backend_check_relocs elf32_frv_check_relocs
4750 #define elf_backend_object_p elf32_frv_object_p
4751 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
4753 #define elf_backend_can_gc_sections 1
4754 #define elf_backend_rela_normal 1
4756 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
4757 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
4758 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data
4759 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
4760 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
4762 #define elf_backend_want_got_sym 1
4763 #define elf_backend_got_header_size 0
4764 #define elf_backend_want_got_plt 0
4765 #define elf_backend_plt_readonly 1
4766 #define elf_backend_want_plt_sym 0
4767 #define elf_backend_plt_header_size 0
4769 #define elf_backend_finish_dynamic_sections \
4770 elf32_frv_finish_dynamic_sections
4774 #undef ELF_MAXPAGESIZE
4775 #define ELF_MAXPAGESIZE 0x4000
4777 #undef TARGET_BIG_SYM
4778 #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec
4779 #undef TARGET_BIG_NAME
4781 #undef elf32_bed
4782 #define elf32_bed elf32_frvfdpic_bed
4784 #undef elf_info_to_howto_rel
4785 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel
4787 #undef bfd_elf32_bfd_link_hash_table_create
4788 #define bfd_elf32_bfd_link_hash_table_create \
4789 frvfdpic_elf_link_hash_table_create
4790 #undef elf_backend_always_size_sections
4791 #define elf_backend_always_size_sections \
4792 elf32_frvfdpic_always_size_sections
4793 #undef elf_backend_modify_segment_map
4794 #define elf_backend_modify_segment_map \
4795 elf32_frvfdpic_modify_segment_map
4796 #undef bfd_elf32_bfd_copy_private_bfd_data
4797 #define bfd_elf32_bfd_copy_private_bfd_data \
4798 elf32_frvfdpic_copy_private_bfd_data
4800 #undef elf_backend_create_dynamic_sections
4801 #define elf_backend_create_dynamic_sections \
4802 elf32_frvfdpic_create_dynamic_sections
4803 #undef elf_backend_adjust_dynamic_symbol
4804 #define elf_backend_adjust_dynamic_symbol \
4805 elf32_frvfdpic_adjust_dynamic_symbol
4806 #undef elf_backend_size_dynamic_sections
4807 #define elf_backend_size_dynamic_sections \
4808 elf32_frvfdpic_size_dynamic_sections
4809 #undef elf_backend_finish_dynamic_symbol
4810 #define elf_backend_finish_dynamic_symbol \
4811 elf32_frvfdpic_finish_dynamic_symbol
4812 #undef elf_backend_finish_dynamic_sections
4813 #define elf_backend_finish_dynamic_sections \
4814 elf32_frvfdpic_finish_dynamic_sections
4816 #undef elf_backend_can_make_relative_eh_frame
4817 #define elf_backend_can_make_relative_eh_frame \
4818 frvfdpic_elf_use_relative_eh_frame
4819 #undef elf_backend_can_make_lsda_relative_eh_frame
4820 #define elf_backend_can_make_lsda_relative_eh_frame \
4821 frvfdpic_elf_use_relative_eh_frame
4822 #undef elf_backend_encode_eh_address
4823 #define elf_backend_encode_eh_address \
4824 frvfdpic_elf_encode_eh_address
4826 #undef elf_backend_may_use_rel_p
4827 #define elf_backend_may_use_rel_p 1
4828 #undef elf_backend_may_use_rela_p
4829 #define elf_backend_may_use_rela_p 1
4830 /* We use REL for dynamic relocations only. */
4831 #undef elf_backend_default_use_rela_p
4832 #define elf_backend_default_use_rela_p 1
4834 #undef elf_backend_omit_section_dynsym
4835 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym