| blob | 3a3124347b5d4cdaeaac7f58e179866652529d78 |
1 /* FRV-specific support for 32-bit ELF.
2 Copyright 2002, 2003, 2004, 2005, 2006 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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_check_relocs
63 static int elf32_frv_machine
65 static bfd_boolean elf32_frv_object_p
67 static bfd_boolean frv_elf_set_private_flags
69 static bfd_boolean frv_elf_copy_private_bfd_data
71 static bfd_boolean frv_elf_merge_private_bfd_data
73 static bfd_boolean frv_elf_print_private_bfd_data
81 {
82 /* This reloc does nothing. */
97 /* A 32 bit absolute relocation. */
112 /* A 16 bit pc-relative relocation. */
127 /* A 24-bit pc-relative relocation. */
240 /* A 12-bit signed operand with the GOT offset for the address of
241 the symbol. */
256 /* The upper 16 bits of the GOT offset for the address of the
257 symbol. */
272 /* The lower 16 bits of the GOT offset for the address of the
273 symbol. */
288 /* The 32-bit address of the canonical descriptor of a function. */
303 /* A 12-bit signed operand with the GOT offset for the address of
304 canonical descriptor of a function. */
319 /* The upper 16 bits of the GOT offset for the address of the
320 canonical descriptor of a function. */
335 /* The lower 16 bits of the GOT offset for the address of the
336 canonical descriptor of a function. */
351 /* The 64-bit descriptor of a function. */
366 /* A 12-bit signed operand with the GOT offset for the address of
367 canonical descriptor of a function. */
382 /* The upper 16 bits of the GOT offset for the address of the
383 canonical descriptor of a function. */
398 /* The lower 16 bits of the GOT offset for the address of the
399 canonical descriptor of a function. */
414 /* A 12-bit signed operand with the GOT offset for the address of
415 the symbol. */
430 /* The upper 16 bits of the GOT offset for the address of the
431 symbol. */
446 /* The lower 16 bits of the GOT offset for the address of the
447 symbol. */
462 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for
463 a thread-local symbol. If the symbol number is 0, it refers to
464 the module. */
479 /* A 64-bit TLS descriptor for a symbol. This relocation is only
480 valid as a REL, dynamic relocation. */
495 /* A 12-bit signed operand with the GOT offset for the TLS
496 descriptor of the symbol. */
511 /* The upper 16 bits of the GOT offset for the TLS descriptor of the
512 symbol. */
527 /* The lower 16 bits of the GOT offset for the TLS descriptor of the
528 symbol. */
543 /* A 12-bit signed operand with the offset from the module base
544 address to the thread-local symbol address. */
559 /* The upper 16 bits of the offset from the module base address to
560 the thread-local symbol address. */
575 /* The lower 16 bits of the offset from the module base address to
576 the thread-local symbol address. */
591 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry
592 for a symbol. */
607 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a
608 symbol. */
623 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a
624 symbol. */
639 /* The 32-bit offset from the thread pointer (not the module base
640 address) to a thread-local symbol. */
655 /* An annotation for linker relaxation, that denotes the
656 symbol+addend whose TLS descriptor is referenced by the sum of
657 the two input registers of an ldd instruction. */
672 /* An annotation for linker relaxation, that denotes the
673 symbol+addend whose TLS resolver entry point is given by the sum
674 of the two register operands of an calll instruction. */
689 /* An annotation for linker relaxation, that denotes the
690 symbol+addend whose TLS offset GOT entry is given by the sum of
691 the two input registers of an ld instruction. */
706 /* A 32-bit offset from the module base address to
707 the thread-local symbol address. */
721 };
723 /* GNU extension to record C++ vtable hierarchy. */
739 /* GNU extension to record C++ vtable member usage. */
755 /* The following 3 relocations are REL. The only difference to the
756 entries in the table above are that partial_inplace is TRUE. */
803 /* A 64-bit TLS descriptor for a symbol. The first word resolves to
804 an entry point, and the second resolves to a special argument.
805 If the symbol turns out to be in static TLS, the entry point is a
806 return instruction, and the special argument is the TLS offset
807 for the symbol. If it's in dynamic TLS, the entry point is a TLS
808 offset resolver, and the special argument is a pointer to a data
809 structure allocated by the dynamic loader, containing the GOT
810 address for the offset resolver, the module id, the offset within
811 the module, and anything else the TLS offset resolver might need
812 to determine the TLS offset for the symbol in the running
813 thread. */
829 /* The 32-bit offset from the thread pointer (not the module base
830 address) to a thread-local symbol. */
846 \f
848 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec)
850 /* An extension of the elf hash table data structure, containing some
851 additional FRV-specific data. */
852 struct frvfdpic_elf_link_hash_table
853 {
856 /* A pointer to the .got section. */
858 /* A pointer to the .rel.got section. */
860 /* A pointer to the .rofixup section. */
862 /* A pointer to the .plt section. */
864 /* A pointer to the .rel.plt section. */
866 /* GOT base offset. */
867 bfd_vma got0;
868 /* Location of the first non-lazy PLT entry, i.e., the number of
869 bytes taken by lazy PLT entries. If locally-bound TLS
870 descriptors require a ret instruction, it will be placed at this
871 offset. */
872 bfd_vma plt0;
873 /* A hash table holding information about which symbols were
874 referenced with which PIC-related relocations. */
876 /* Summary reloc information collected by
877 _frvfdpic_count_got_plt_entries. */
879 };
881 /* Get the FRV ELF linker hash table from a link_info structure. */
883 #define frvfdpic_hash_table(info) \
884 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash))
886 #define frvfdpic_got_section(info) \
887 (frvfdpic_hash_table (info)->sgot)
888 #define frvfdpic_gotrel_section(info) \
889 (frvfdpic_hash_table (info)->sgotrel)
890 #define frvfdpic_gotfixup_section(info) \
891 (frvfdpic_hash_table (info)->sgotfixup)
892 #define frvfdpic_plt_section(info) \
893 (frvfdpic_hash_table (info)->splt)
894 #define frvfdpic_pltrel_section(info) \
895 (frvfdpic_hash_table (info)->spltrel)
896 #define frvfdpic_relocs_info(info) \
897 (frvfdpic_hash_table (info)->relocs_info)
898 #define frvfdpic_got_initial_offset(info) \
899 (frvfdpic_hash_table (info)->got0)
900 #define frvfdpic_plt_initial_offset(info) \
901 (frvfdpic_hash_table (info)->plt0)
902 #define frvfdpic_dynamic_got_plt_info(info) \
903 (frvfdpic_hash_table (info)->g)
905 /* Currently it's the same, but if some day we have a reason to change
906 it, we'd better be using a different macro.
908 FIXME: if there's any TLS PLT entry that uses local-exec or
909 initial-exec models, we could use the ret at the end of any of them
910 instead of adding one more. */
911 #define frvfdpic_plt_tls_ret_offset(info) \
912 (frvfdpic_plt_initial_offset (info))
914 /* The name of the dynamic interpreter. This is put in the .interp
915 section. */
919 #define DEFAULT_STACK_SIZE 0x20000
921 /* This structure is used to collect the number of entries present in
922 each addressable range of the got. */
923 struct _frvfdpic_dynamic_got_info
924 {
925 /* Several bits of information about the current link. */
927 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit
928 ranges. */
930 /* Total GOT size needed for function descriptor entries within the 12-,
931 16- or 32-bit ranges. */
933 /* Total GOT size needed by function descriptor entries referenced
934 in PLT entries, that would be profitable to place in offsets
935 close to the PIC register. */
936 bfd_vma fdplt;
937 /* Total PLT size needed by lazy PLT entries. */
938 bfd_vma lzplt;
939 /* Total GOT size needed for TLS descriptor entries within the 12-,
940 16- or 32-bit ranges. */
942 /* Total GOT size needed by TLS descriptors referenced in PLT
943 entries, that would be profitable to place in offers close to the
944 PIC register. */
945 bfd_vma tlsdplt;
946 /* Total PLT size needed by TLS lazy PLT entries. */
947 bfd_vma tlslzplt;
948 /* Number of relocations carried over from input object files. */
950 /* Number of fixups introduced by relocations in input object files. */
952 /* The number of fixups that reference the ret instruction added to
953 the PLT for locally-resolved TLS descriptors. */
955 };
957 /* This structure is used to assign offsets to got entries, function
958 descriptors, plt entries and lazy plt entries. */
960 struct _frvfdpic_dynamic_got_plt_info
961 {
962 /* Summary information collected with _frvfdpic_count_got_plt_entries. */
965 /* For each addressable range, we record a MAX (positive) and MIN
966 (negative) value. CUR is used to assign got entries, and it's
967 incremented from an initial positive value to MAX, then from MIN
968 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
969 assign function descriptors, and it's decreased from an initial
970 non-positive value to MIN, then from MAX down to CUR (unless CUR
971 wraps around first). All of MIN, MAX, CUR and FDCUR always point
972 to even words. ODD, if non-zero, indicates an odd word to be
973 used for the next got entry, otherwise CUR is used and
974 incremented by a pair of words, wrapping around when it reaches
975 MAX. FDCUR is decremented (and wrapped) before the next function
976 descriptor is chosen. FDPLT indicates the number of remaining
977 slots that can be used for function descriptors used only by PLT
978 entries.
980 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR
981 starts as MAX, and grows up to TMAX, then wraps around to TMIN
982 and grows up to MIN. TLSDPLT indicates the number of remaining
983 slots that can be used for TLS descriptors used only by TLS PLT
984 entries. */
985 struct _frvfdpic_dynamic_got_alloc_data
986 {
991 };
993 /* Create an FRV ELF linker hash table. */
997 {
1006 _bfd_elf_link_hash_newfunc,
1008 {
1011 }
1014 }
1016 /* Decide whether a reference to a symbol can be resolved locally or
1017 not. If the symbol is protected, we want the local address, but
1018 its function descriptor must be assigned by the dynamic linker. */
1019 #define FRVFDPIC_SYM_LOCAL(INFO, H) \
1020 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1021 || ! elf_hash_table (INFO)->dynamic_sections_created)
1022 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \
1023 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1025 /* This structure collects information on what kind of GOT, PLT or
1026 function descriptors are required by relocations that reference a
1027 certain symbol. */
1028 struct frvfdpic_relocs_info
1029 {
1030 /* The index of the symbol, as stored in the relocation r_info, if
1031 we have a local symbol; -1 otherwise. */
1033 union
1034 {
1035 /* The input bfd in which the symbol is defined, if it's a local
1036 symbol. */
1038 /* If symndx == -1, the hash table entry corresponding to a global
1039 symbol (even if it turns out to bind locally, in which case it
1040 should ideally be replaced with section's symndx + addend). */
1043 /* The addend of the relocation that references the symbol. */
1044 bfd_vma addend;
1046 /* The fields above are used to identify an entry. The fields below
1047 contain information on how an entry is used and, later on, which
1048 locations it was assigned. */
1049 /* The following 3 fields record whether the symbol+addend above was
1050 ever referenced with a GOT relocation. The 12 suffix indicates a
1051 GOT12 relocation; los is used for GOTLO relocations that are not
1052 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
1053 pairs. */
1057 /* Whether a FUNCDESC relocation references symbol+addend. */
1059 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1063 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1067 /* Whether a GETTLSOFF relocation references symbol+addend. */
1069 /* FIXME: we should probably add tlspltdesc, tlspltoff and
1070 tlspltimm, to tell what kind of TLS PLT entry we're generating.
1071 We might instead just pre-compute flags telling whether the
1072 object is suitable for local exec, initial exec or general
1073 dynamic addressing, and use that all over the place. We could
1074 also try to do a better job of merging TLSOFF and TLSDESC entries
1075 in main executables, but perhaps we can get rid of TLSDESC
1076 entirely in them instead. */
1077 /* Whether a GOTTLSDESC relocation references symbol+addend. */
1081 /* Whether a GOTTLSOFF relocation references symbol+addend. */
1085 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
1086 GOTOFFHI relocations. The addend doesn't really matter, since we
1087 envision that this will only be used to check whether the symbol
1088 is mapped to the same segment as the got. */
1090 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1092 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1093 relocation. */
1095 /* Whether we need a PLT entry for a symbol. Should be implied by
1096 something like:
1097 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */
1099 /* Whether a function descriptor should be created in this link unit
1100 for symbol+addend. Should be implied by something like:
1101 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
1102 || ((fd || fdgot12 || fdgotlos || fdgothilo)
1103 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1105 /* Whether a lazy PLT entry is needed for this symbol+addend.
1106 Should be implied by something like:
1107 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)
1108 && ! (info->flags & DF_BIND_NOW)) */
1110 /* Whether we've already emitted GOT relocations and PLT entries as
1111 needed for this symbol. */
1114 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and
1115 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing
1116 symbol+addend. */
1119 /* The number of .rofixups entries and dynamic relocations allocated
1120 for this symbol, minus any that might have already been used. */
1123 /* The offsets of the GOT entries assigned to symbol+addend, to the
1124 function descriptor's address, and to a function descriptor,
1125 respectively. Should be zero if unassigned. The offsets are
1126 counted from the value that will be assigned to the PIC register,
1127 not from the beginning of the .got section. */
1129 /* The offsets of the PLT entries assigned to symbol+addend,
1130 non-lazy and lazy, respectively. If unassigned, should be
1131 (bfd_vma)-1. */
1133 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */
1135 /* The offset of the TLS offset PLT entry. */
1136 bfd_vma tlsplt_entry;
1137 };
1139 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */
1140 static hashval_t
1142 {
1148 }
1150 /* Test whether the key fields of two frvfdpic_relocs_info entries are
1151 identical. */
1152 static int
1154 {
1160 }
1162 /* Find or create an entry in a hash table HT that matches the key
1163 fields of the given ENTRY. If it's not found, memory for a new
1164 entry is allocated in ABFD's obstack. */
1170 {
1193 }
1195 /* Obtain the address of the entry in HT associated with H's symbol +
1196 addend, creating a new entry if none existed. ABFD is only used
1197 for memory allocation purposes. */
1202 bfd_vma addend,
1204 {
1212 }
1214 /* Obtain the address of the entry in HT associated with the SYMNDXth
1215 local symbol of the input bfd ABFD, plus the addend, creating a new
1216 entry if none existed. */
1221 bfd_vma addend,
1223 {
1231 }
1233 /* Merge fields set by check_relocs() of two entries that end up being
1234 mapped to the same (presumably global) symbol. */
1239 {
1260 }
1262 /* Every block of 65535 lazy PLT entries shares a single call to the
1263 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
1264 32767, counting from 0). All other lazy PLT entries branch to it
1265 in a single instruction. */
1267 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
1268 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767)
1270 /* Add a dynamic relocation to the SRELOC section. */
1276 {
1277 Elf_Internal_Rela outrel;
1278 bfd_vma reloc_offset;
1290 /* If the entry's index is zero, this relocation was probably to a
1291 linkonce section that got discarded. We reserved a dynamic
1292 relocation, but it was for another entry than the one we got at
1293 the time of emitting the relocation. Unfortunately there's no
1294 simple way for us to catch this situation, since the relocation
1295 is cleared right before calling relocate_section, at which point
1296 we no longer know what the relocation used to point to. */
1298 {
1301 }
1304 }
1306 /* Add a fixup to the ROFIXUP section. */
1308 static bfd_vma
1311 {
1312 bfd_vma fixup_offset;
1319 {
1322 }
1326 {
1327 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc
1328 above. */
1331 }
1334 }
1336 /* Find the segment number in which OSEC, and output section, is
1337 located. */
1339 static unsigned
1341 {
1345 /* Find the segment that contains the output_section. */
1350 {
1359 }
1362 }
1366 {
1370 }
1372 #define FRVFDPIC_TLS_BIAS (2048 - 16)
1374 /* Return the base VMA address which should be subtracted from real addresses
1375 when resolving TLSMOFF relocation.
1376 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */
1378 static bfd_vma
1380 {
1381 /* If tls_sec is NULL, we should have signalled an error already. */
1385 }
1387 /* Generate relocations for GOT entries, function descriptors, and
1388 code for PLT and lazy PLT entries. */
1396 bfd_vma addend)
1398 {
1408 {
1409 /* If the symbol is dynamic, consider it for dynamic
1410 relocations, otherwise decay to section + offset. */
1413 else
1414 {
1419 else
1421 }
1422 }
1424 /* Generate relocation for GOT entry pointing to the symbol. */
1426 {
1430 /* If the symbol is dynamic but binds locally, use
1431 section+offset. */
1434 {
1437 else
1442 else
1444 }
1446 /* If we're linking an executable at a fixed address, we can
1447 omit the dynamic relocation as long as the symbol is local to
1448 this module. */
1452 {
1460 ->vma
1464 }
1465 else
1467 _bfd_elf_section_offset
1481 }
1483 /* Generate relocation for GOT entry pointing to a canonical
1484 function descriptor. */
1486 {
1493 {
1494 /* If the symbol is dynamic and there may be dynamic symbol
1495 resolution because we are, or are linked with, a shared
1496 library, emit a FUNCDESC relocation such that the dynamic
1497 linker will allocate the function descriptor. If the
1498 symbol needs a non-local function descriptor but binds
1499 locally (e.g., its visibility is protected, emit a
1500 dynamic relocation decayed to section+offset. */
1505 {
1511 }
1514 {
1519 {
1526 }
1527 }
1528 else
1529 {
1530 /* Otherwise, we know we have a private function descriptor,
1531 so reference it directly. */
1539 }
1541 /* If there is room for dynamic symbol resolution, emit the
1542 dynamic relocation. However, if we're linking an
1543 executable at a fixed location, we won't have emitted a
1544 dynamic symbol entry for the got section, so idx will be
1545 zero, which means we can and should compute the address
1546 of the private descriptor ourselves. */
1550 {
1557 ->output_offset
1560 }
1561 else
1564 _bfd_elf_section_offset
1574 }
1580 }
1582 /* Generate relocation to fill in a private function descriptor in
1583 the GOT. */
1585 {
1588 bfd_vma ofst;
1591 /* If the symbol is dynamic but binds locally, use
1592 section+offset. */
1595 {
1598 else
1603 else
1605 }
1607 /* If we're linking an executable at a fixed address, we can
1608 omit the dynamic relocation as long as the symbol is local to
1609 this module. */
1612 {
1618 {
1624 ->output_offset
1632 ->output_offset
1635 }
1636 }
1637 else
1638 {
1639 ofst =
1641 entry->lazyplt
1644 _bfd_elf_section_offset
1654 }
1656 /* If we've omitted the dynamic relocation, just emit the fixed
1657 addresses of the symbol and of the local GOT base offset. */
1659 {
1664 }
1666 {
1668 {
1675 }
1679 /* A function descriptor used for lazy or local resolving is
1680 initialized such that its high word contains the output
1681 section index in which the PLT entries are located, and
1682 the low word contains the address of the lazy PLT entry
1683 entry point, that must be within the memory region
1684 assigned to that section. */
1688 highword = _frvfdpic_osec_to_segment
1690 }
1691 else
1692 {
1693 /* A function descriptor for a local function gets the index
1694 of the section. For a non-local function, it's
1695 disregarded. */
1700 else
1701 highword = _frvfdpic_osec_to_segment
1703 }
1713 }
1715 /* Generate code for the PLT entry. */
1717 {
1723 /* Figure out what kind of PLT entry we need, depending on the
1724 location of the function descriptor within the GOT. */
1727 {
1728 /* lddi @(gr15, fd_entry), gr14 */
1731 plt_code);
1733 }
1734 else
1735 {
1738 {
1739 /* setlos lo(fd_entry), gr14 */
1741 0x9cfc0000
1743 plt_code);
1745 }
1746 else
1747 {
1748 /* sethi.p hi(fd_entry), gr14
1749 setlo lo(fd_entry), gr14 */
1751 0x1cf80000
1754 plt_code);
1757 0x9cf40000
1759 plt_code);
1761 }
1762 /* ldd @(gr14,gr15),gr14 */
1765 }
1766 /* jmpl @(gr14,gr0) */
1768 }
1770 /* Generate code for the lazy PLT entry. */
1772 {
1775 bfd_vma resolverStub_addr;
1786 {
1787 /* This is a lazy PLT entry that includes a resolver call. */
1788 /* ldd @(gr15,gr0), gr4
1789 jmpl @(gr4,gr0) */
1792 }
1793 else
1794 {
1795 /* bra resolverStub */
1797 0xc01a0000
1800 lzplt_code);
1801 }
1802 }
1804 /* Generate relocation for GOT entry holding the TLS offset. */
1806 {
1812 {
1813 /* If the symbol is dynamic but binds locally, use
1814 section+offset. */
1816 {
1819 else
1825 else
1827 }
1828 }
1830 /* *ABS*+addend is special for TLS relocations, use only the
1831 addend. */
1836 ;
1837 /* If we're linking an executable, we can entirely omit the
1838 dynamic relocation if the symbol is local to this module. */
1842 {
1845 }
1846 else
1847 {
1851 {
1853 {
1858 }
1861 }
1863 _bfd_elf_section_offset
1873 }
1879 }
1882 {
1886 /* If the symbol is dynamic but binds locally, use
1887 section+offset. */
1890 {
1893 else
1898 else
1900 }
1902 /* If we didn't set up a TLS offset entry, but we're linking an
1903 executable and the symbol binds locally, we can use the
1904 module offset in the TLS descriptor in relaxations. */
1914 {
1915 /* *ABS*+addend is special for TLS relocations, use only the
1916 addend for the TLS offset, and take the module id as
1917 0. */
1921 ;
1922 /* For other TLS symbols that bind locally, add the section
1923 TLS offset to the addend. */
1940 ->output_offset
1946 /* We've used one of the reserved fixups, so discount it so
1947 that we can check at the end that we've used them
1948 all. */
1951 /* While at that, make sure the ret instruction makes to the
1952 right location in the PLT. We could do it only when we
1953 got to 0, but since the check at the end will only print
1954 a warning, make sure we have the ret in place in case the
1955 warning is missed. */
1959 }
1960 else
1961 {
1965 {
1967 {
1972 }
1975 }
1978 _bfd_elf_section_offset
1993 }
1999 }
2001 /* Generate code for the get-TLS-offset PLT entry. */
2003 {
2010 {
2014 /* sec may be NULL when referencing an undefweak symbol
2015 while linking a static executable. */
2017 {
2020 }
2021 else
2022 {
2025 else
2031 else
2033 }
2035 /* *ABS*+addend is special for TLS relocations, use only the
2036 addend for the TLS offset, and take the module id as
2037 0. */
2041 ;
2042 /* For other TLS symbols that bind locally, add the section
2043 TLS offset to the addend. */
2049 {
2050 /* setlos lo(ad), gr9 */
2052 0x92fc0000
2053 | (ad
2055 plt_code);
2057 }
2058 else
2059 {
2060 /* sethi.p hi(ad), gr9
2061 setlo lo(ad), gr9 */
2063 0x12f80000
2066 plt_code);
2069 0x92f40000
2070 | (ad
2072 plt_code);
2074 }
2075 /* ret */
2077 }
2079 {
2080 /* Figure out what kind of PLT entry we need, depending on the
2081 location of the TLS descriptor within the GOT. */
2084 {
2085 /* ldi @(gr15, tlsoff_entry), gr9 */
2089 plt_code);
2091 }
2092 else
2093 {
2096 {
2097 /* setlos lo(tlsoff_entry), gr8 */
2099 0x90fc0000
2102 plt_code);
2104 }
2105 else
2106 {
2107 /* sethi.p hi(tlsoff_entry), gr8
2108 setlo lo(tlsoff_entry), gr8 */
2110 0x10f80000
2113 plt_code);
2116 0x90f40000
2119 plt_code);
2121 }
2122 /* ld @(gr15,gr8),gr9 */
2125 }
2126 /* ret */
2128 }
2129 else
2130 {
2133 /* Figure out what kind of PLT entry we need, depending on the
2134 location of the TLS descriptor within the GOT. */
2137 {
2138 /* lddi @(gr15, tlsdesc_entry), gr8 */
2142 plt_code);
2144 }
2145 else
2146 {
2149 {
2150 /* setlos lo(tlsdesc_entry), gr8 */
2152 0x90fc0000
2155 plt_code);
2157 }
2158 else
2159 {
2160 /* sethi.p hi(tlsdesc_entry), gr8
2161 setlo lo(tlsdesc_entry), gr8 */
2163 0x10f80000
2166 plt_code);
2169 0x90f40000
2172 plt_code);
2174 }
2175 /* ldd @(gr15,gr8),gr8 */
2178 }
2179 /* jmpl @(gr8,gr0) */
2181 }
2182 }
2185 }
2187 /* Handle an FRV small data reloc. */
2189 static bfd_reloc_status_type
2197 bfd_vma value;
2198 {
2199 bfd_vma insn;
2200 bfd_vma gp;
2224 }
2226 /* Handle an FRV small data reloc. for the u12 field. */
2228 static bfd_reloc_status_type
2236 bfd_vma value;
2237 {
2238 bfd_vma insn;
2239 bfd_vma gp;
2241 bfd_vma mask;
2259 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
2266 }
2268 /* Handle an FRV ELF HI16 reloc. */
2270 static bfd_reloc_status_type
2275 bfd_vma value;
2276 {
2277 bfd_vma insn;
2292 }
2293 static bfd_reloc_status_type
2298 bfd_vma value;
2299 {
2300 bfd_vma insn;
2314 }
2316 /* Perform the relocation for the CALL label24 instruction. */
2318 static bfd_reloc_status_type
2324 bfd_vma value;
2325 {
2326 bfd_vma insn;
2327 bfd_vma label6;
2328 bfd_vma label18;
2330 /* The format for the call instruction is:
2332 0 000000 0001111 000000000000000000
2333 label6 opcode label18
2335 The branch calculation is: pc + (4*label24)
2336 where label24 is the concatenation of label6 and label18. */
2338 /* Grab the instruction. */
2359 }
2361 static bfd_reloc_status_type
2369 bfd_vma value;
2370 {
2371 bfd_vma insn;
2372 bfd_vma gp;
2394 }
2396 static bfd_reloc_status_type
2404 bfd_vma value;
2405 {
2406 bfd_vma insn;
2407 bfd_vma gp;
2430 }
2435 bfd_reloc_code_real_type code;
2436 {
2438 {
2449 /* Fall through. */
2587 }
2590 }
2592 /* Set the howto pointer for an FRV ELF reloc. */
2594 static void
2599 {
2604 {
2616 }
2617 }
2619 /* Set the howto pointer for an FRV ELF REL reloc. */
2620 static void
2623 {
2628 {
2652 }
2653 }
2654 \f
2655 /* Perform a single relocation. By default we use the standard BFD
2656 routines, but a few relocs, we have to do them ourselves. */
2658 static bfd_reloc_status_type
2660 relocation)
2666 bfd_vma relocation;
2667 {
2671 }
2673 \f
2674 /* Relocate an FRV ELF section.
2676 The RELOCATE_SECTION function is called by the new ELF backend linker
2677 to handle the relocations for a section.
2679 The relocs are always passed as Rela structures; if the section
2680 actually uses Rel structures, the r_addend field will always be
2681 zero.
2683 This function is responsible for adjusting the section contents as
2684 necessary, and (if using Rela relocs and generating a relocatable
2685 output file) adjusting the reloc addend as necessary.
2687 This function does not have to worry about setting the reloc
2688 address or the reloc symbol index.
2690 LOCAL_SYMS is a pointer to the swapped in local symbols.
2692 LOCAL_SECTIONS is an array giving the section in the input file
2693 corresponding to the st_shndx field of each local symbol.
2695 The global hash table entry for the global symbols can be found
2696 via elf_sym_hashes (input_bfd).
2698 When generating relocatable output, this function must handle
2699 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2700 going to be the section symbol corresponding to the output
2701 section, which means that the addend must be adjusted
2702 accordingly. */
2704 static bfd_boolean
2715 {
2738 else
2744 else
2750 else
2755 else
2759 {
2765 bfd_vma relocation;
2766 bfd_reloc_status_type r;
2779 /* This is a final link. */
2787 {
2792 name = bfd_elf_string_from_elf_section
2795 }
2796 else
2797 {
2808 {
2810 r_type != R_FRV_TLSMOFF
2812 {
2815 }
2816 else
2817 {
2822 }
2823 }
2825 {
2827 }
2831 else
2832 {
2840 }
2842 }
2845 {
2885 else
2886 /* In order to find the entry we created before, we must
2887 use the original addend, not the one that may have been
2888 modified by _bfd_elf_rela_local_sym(). */
2898 {
2903 }
2908 non_fdpic:
2911 {
2916 }
2918 }
2921 {
2944 }
2946 /* Try to apply TLS relaxations. */
2949 {
2951 #define LOCAL_EXEC_P(info, picrel) \
2952 ((info)->executable \
2953 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h)))
2954 #define INITIAL_EXEC_P(info, picrel) \
2955 (((info)->executable || (info)->flags & DF_STATIC_TLS) \
2956 && (picrel)->tlsoff_entry)
2958 #define IN_RANGE_FOR_OFST12_P(value) \
2959 ((bfd_vma)((value) + 2048) < (bfd_vma)4096)
2960 #define IN_RANGE_FOR_SETLOS_P(value) \
2961 ((bfd_vma)((value) + 32768) < (bfd_vma)65536)
2962 #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \
2963 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info)))
2965 #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \
2966 (LOCAL_EXEC_P ((info), (picrel)) \
2967 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info)))
2968 #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \
2969 (INITIAL_EXEC_P ((info), (picrel)) \
2970 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry))
2972 #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \
2973 (LOCAL_EXEC_P ((info), (picrel)))
2974 #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \
2975 (INITIAL_EXEC_P ((info), (picrel)))
2977 #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \
2978 (LOCAL_EXEC_P ((info), (picrel)) \
2979 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info)))
2984 /* Is this a call instruction? */
2986 {
2992 }
2996 {
2997 /* Replace the call instruction (except the packing bit)
2998 with setlos #tlsmofflo(symbol+offset), gr9. */
3006 }
3009 {
3010 /* Replace the call instruction (except the packing bit)
3011 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */
3019 }
3026 /* Is this an lddi instruction? */
3028 {
3034 }
3039 info))
3040 {
3041 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
3042 with setlos #tlsmofflo(symbol+offset), gr<C+1>.
3043 Preserve the packing bit. */
3053 }
3057 {
3058 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
3059 with sethi #tlsmoffhi(symbol+offset), gr<C+1>.
3060 Preserve the packing bit. */
3070 }
3073 {
3074 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
3075 with ldi @(grB, #gottlsoff12(symbol+offset),
3076 gr<C+1>. Preserve the packing bit. If gottlsoff12
3077 overflows, we'll error out, but that's sort-of ok,
3078 since we'd started with gottlsdesc12, that's actually
3079 more demanding. Compiling with -fPIE instead of
3080 -fpie would fix it; linking with --relax should fix
3081 it as well. */
3090 }
3097 /* Is this a sethi instruction? */
3099 {
3105 }
3111 {
3112 /* Replace sethi with a nop. Preserve the packing bit. */
3117 /* Nothing to relocate. */
3119 }
3122 {
3123 /* Simply decay GOTTLSDESC to GOTTLSOFF. */
3127 }
3134 /* Is this a setlo or setlos instruction? */
3136 {
3143 }
3149 {
3150 /* Replace setlo/setlos with a nop. Preserve the
3151 packing bit. */
3156 /* Nothing to relocate. */
3158 }
3161 {
3162 /* If the corresponding sethi (if it exists) decayed
3163 to a nop, make sure this becomes (or already is) a
3164 setlos, not setlo. */
3166 {
3169 }
3171 /* Simply decay GOTTLSDESC to GOTTLSOFF. */
3175 }
3182 /* Is this an ldd instruction? */
3184 {
3190 }
3195 info))
3196 {
3197 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3198 with setlos #tlsmofflo(symbol+offset), gr<C+1>.
3199 Preserve the packing bit. */
3209 }
3213 {
3214 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3215 with sethi #tlsmoffhi(symbol+offset), gr<C+1>.
3216 Preserve the packing bit. */
3226 }
3230 {
3231 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3232 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>.
3233 Preserve the packing bit. */
3243 }
3246 {
3247 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3248 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>.
3249 Preserve the packing bit. */
3255 /* #tlsoff(symbol+offset) is just a relaxation
3256 annotation, so there's nothing left to
3257 relocate. */
3259 }
3266 /* Is this a calll or callil instruction? */
3268 {
3275 }
3280 info))
3281 {
3282 /* Replace calll with a nop. Preserve the packing bit. */
3287 /* Nothing to relocate. */
3289 }
3293 {
3294 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9.
3295 Preserve the packing bit. */
3303 }
3306 {
3307 /* Replace calll with a nop. Preserve the packing bit. */
3312 /* Nothing to relocate. */
3314 }
3321 /* Is this an ldi instruction? */
3323 {
3329 }
3333 {
3334 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC
3335 with setlos #tlsmofflo(symbol+offset), grC.
3336 Preserve the packing bit. */
3344 }
3351 /* Is this a sethi instruction? */
3353 {
3359 }
3365 {
3366 /* Replace sethi with a nop. Preserve the packing bit. */
3371 /* Nothing to relocate. */
3373 }
3380 /* Is this a setlo or setlos instruction? */
3382 {
3389 }
3395 {
3396 /* Replace setlo/setlos with a nop. Preserve the
3397 packing bit. */
3402 /* Nothing to relocate. */
3404 }
3411 /* Is this an ld instruction? */
3413 {
3419 }
3423 {
3424 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC
3425 with setlos #tlsmofflo(symbol+offset), grC.
3426 Preserve the packing bit. */
3434 }
3438 {
3439 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC
3440 with ldi @(grB, #gottlsoff12(symbol+offset), grC.
3441 Preserve the packing bit. */
3449 }
3456 /* Is this a sethi instruction? */
3458 {
3464 }
3467 info))
3468 {
3469 /* Replace sethi with a nop. Preserve the packing bit. */
3474 /* Nothing to relocate. */
3476 }
3483 /* Is this a setlo or setlos instruction? */
3485 {
3492 }
3495 info))
3496 /* If the corresponding sethi (if it exists) decayed
3497 to a nop, make sure this becomes (or already is) a
3498 setlos, not setlo. */
3499 {
3502 }
3506 /*
3507 There's nothing to relax in these:
3508 R_FRV_TLSDESC_VALUE
3509 R_FRV_TLSOFF
3510 R_FRV_TLSMOFF12
3511 R_FRV_TLSMOFFHI
3512 R_FRV_TLSMOFFLO
3513 R_FRV_TLSMOFF
3514 */
3518 }
3521 {
3527 {
3532 }
3533 /* We don't want to warn on calls to undefined weak symbols,
3534 as calls to them must be protected by non-NULL tests
3535 anyway, and unprotected calls would invoke undefined
3536 behavior. */
3540 else
3580 {
3586 {
3587 /* If the symbol is dynamic and there may be dynamic
3588 symbol resolution because we are or are linked with a
3589 shared library, emit a FUNCDESC relocation such that
3590 the dynamic linker will allocate the function
3591 descriptor. If the symbol needs a non-local function
3592 descriptor but binds locally (e.g., its visibility is
3593 protected, emit a dynamic relocation decayed to
3594 section+offset. */
3598 {
3603 }
3605 {
3607 {
3612 }
3614 }
3615 else
3616 {
3617 /* Otherwise, we know we have a private function
3618 descriptor, so reference it directly. */
3626 }
3628 /* If there is room for dynamic symbol resolution, emit
3629 the dynamic relocation. However, if we're linking an
3630 executable at a fixed location, we won't have emitted a
3631 dynamic symbol entry for the got section, so idx will
3632 be zero, which means we can and should compute the
3633 address of the private descriptor ourselves. */
3636 {
3641 {
3643 input_section
3645 {
3651 }
3653 frvfdpic_gotfixup_section
3655 _bfd_elf_section_offset
3658 + input_section
3661 picrel);
3662 }
3663 }
3667 {
3669 input_section
3671 {
3677 }
3680 _bfd_elf_section_offset
3683 + input_section
3687 }
3688 else
3690 }
3692 /* We want the addend in-place because dynamic
3693 relocations are REL. Setting relocation to it should
3694 arrange for it to be installed. */
3696 }
3702 {
3705 }
3706 /* Fall through. */
3708 {
3712 /* If the symbol is dynamic but binds locally, use
3713 section+offset. */
3715 {
3717 {
3722 }
3724 }
3725 else
3726 {
3729 else
3737 else
3739 }
3741 /* If we're linking an executable at a fixed address, we
3742 can omit the dynamic relocation as long as the symbol
3743 is defined in the current link unit (which is implied
3744 by its output section not being NULL). */
3747 {
3754 {
3756 input_section
3758 {
3764 }
3766 {
3768 frvfdpic_gotfixup_section
3770 _bfd_elf_section_offset
3773 + input_section
3776 picrel);
3778 _frvfdpic_add_rofixup
3781 _bfd_elf_section_offset
3786 }
3787 }
3788 }
3789 else
3790 {
3794 {
3796 input_section
3798 {
3804 }
3807 _bfd_elf_section_offset
3810 + input_section
3814 }
3817 /* We want the addend in-place because dynamic
3818 relocations are REL. Setting relocation to it
3819 should arrange for it to be installed. */
3821 }
3824 {
3825 /* If we've omitted the dynamic relocation, just emit
3826 the fixed addresses of the symbol and of the local
3827 GOT base offset. */
3835 else
3836 /* A function descriptor used for lazy or local
3837 resolving is initialized such that its high word
3838 contains the output section index in which the
3839 PLT entries are located, and the low word
3840 contains the offset of the lazy PLT entry entry
3841 point into that section. */
3846 sec
3849 }
3850 }
3897 {
3900 }
3902 {
3906 }
3907 else
3926 /* These shouldn't be present in input object files. */
3933 /* These are just annotations for relaxation, nothing to do
3934 here. */
3943 }
3946 {
3947 /* If you take this out, remove the #error from fdpic-static-6.d
3948 in the ld testsuite. */
3949 /* This helps catch problems in GCC while we can't do more
3950 than static linking. The idea is to test whether the
3951 input file basename is crt0.o only once. */
3953 silence_segment_error =
3962 /* We don't want duplicate errors for undefined
3963 symbols. */
3966 {
3972 else
3977 }
3981 }
3984 {
3987 /* We need the addend to be applied before we shift the
3988 value right. */
3990 /* Fall through. */
3997 /* Fall through. */
4011 }
4014 {
4018 /* Fall through. */
4020 /* When referencing a GOT entry, a function descriptor or a
4021 PLT, we don't want the addend to apply to the reference,
4022 but rather to the referenced symbol. The actual entry
4023 will have already been created taking the addend into
4024 account, so cancel it out here. */
4041 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
4042 here, since we do want to apply the addend to the others.
4043 Note that we've applied the addend to GOTOFFHI before we
4044 shifted it right. */
4052 }
4084 else
4089 {
4093 {
4120 }
4123 {
4128 }
4132 }
4133 }
4136 }
4137 \f
4138 /* Return the section that should be marked against GC for a given
4139 relocation. */
4147 {
4150 {
4154 }
4157 }
4158 \f
4159 /* Hook called by the linker routine which adds symbols from an object
4160 file. We use it to put .comm items in .scomm, and not .comm. */
4162 static bfd_boolean
4171 {
4175 {
4176 /* Common symbols less than or equal to -G nn bytes are
4177 automatically put into .sbss. */
4182 {
4184 (SEC_ALLOC
4185 | SEC_IS_COMMON
4189 }
4193 }
4196 }
4198 /* We need dynamic symbols for every section, since segments can
4199 relocate independently. */
4200 static bfd_boolean
4203 ATTRIBUTE_UNUSED,
4205 {
4207 {
4210 /* If sh_type is yet undecided, assume it could be
4211 SHT_PROGBITS/SHT_NOBITS. */
4215 /* There shouldn't be section relative relocations
4216 against any other section. */
4219 }
4220 }
4222 /* Create a .got section, as well as its additional info field. This
4223 is almost entirely copied from
4224 elflink.c:_bfd_elf_create_got_section(). */
4226 static bfd_boolean
4228 {
4237 /* This function may be called more than once. */
4242 /* Machine specific: although pointers are 32-bits wide, we want the
4243 GOT to be aligned to a 64-bit boundary, such that function
4244 descriptors in it can be accessed with 64-bit loads and
4245 stores. */
4258 {
4263 }
4266 {
4267 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
4268 (or .got.plt) section. We don't do this in the linker script
4269 because we don't want to define the symbol if we are not creating
4270 a global offset table. */
4276 /* Machine-specific: we want the symbol for executables as
4277 well. */
4280 }
4282 /* The first bit of the global offset table is the header. */
4285 /* This is the machine-specific part. Create and initialize section
4286 data for the got. */
4288 {
4291 frvfdpic_relocs_info_hash,
4292 frvfdpic_relocs_info_eq,
4305 /* Machine-specific. */
4315 }
4316 else
4317 {
4320 }
4322 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it
4323 turns out that we're linking with a different linker script, the
4324 linker script will override it. */
4335 /* Machine-specific: we want the symbol for executables as well. */
4342 /* FDPIC supports Thread Local Storage, and this may require a
4343 procedure linkage table for TLS PLT entries. */
4345 /* This is mostly copied from
4346 elflink.c:_bfd_elf_create_dynamic_sections(). */
4359 /* FRV-specific: remember it. */
4362 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
4363 .plt section. */
4365 {
4371 }
4373 /* FRV-specific: we want rel relocations for the plt. */
4379 /* FRV-specific: remember it. */
4383 }
4385 /* Make sure the got and plt sections exist, and that our pointers in
4386 the link hash table point to them. */
4388 static bfd_boolean
4390 {
4391 /* This is mostly copied from
4392 elflink.c:_bfd_elf_create_dynamic_sections(). */
4393 flagword flags;
4400 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4401 .rel[a].bss sections. */
4403 /* FRV-specific: we want to create the GOT and the PLT in the FRV
4404 way. */
4408 /* FRV-specific: make sure we created everything we wanted. */
4415 {
4416 /* The .dynbss section is a place to put symbols which are defined
4417 by dynamic objects, are referenced by regular objects, and are
4418 not functions. We must allocate space for them in the process
4419 image and use a R_*_COPY reloc to tell the dynamic linker to
4420 initialize them at run time. The linker script puts the .dynbss
4421 section into the .bss section of the final image. */
4427 /* The .rel[a].bss section holds copy relocs. This section is not
4428 normally needed. We need to create it here, though, so that the
4429 linker will map it to an output section. We can't just create it
4430 only if we need it, because we will not know whether we need it
4431 until we have seen all the input files, and the first time the
4432 main linker code calls BFD after examining all the input files
4433 (size_dynamic_sections) the input sections have already been
4434 mapped to the output sections. If the section turns out not to
4435 be needed, we can discard it later. We will never need this
4436 section when generating a shared object, since they do not use
4437 copy relocs. */
4439 {
4447 }
4448 }
4451 }
4453 /* Compute the total GOT and PLT size required by each symbol in each
4454 range. Symbols may require up to 4 words in the GOT: an entry
4455 pointing to the symbol, an entry pointing to its function
4456 descriptor, and a private function descriptors taking two
4457 words. */
4459 static void
4462 {
4463 /* Allocate space for a GOT entry pointing to the symbol. */
4470 else
4474 /* Allocate space for a GOT entry pointing to the function
4475 descriptor. */
4482 else
4486 /* Decide whether we need a PLT entry, a function descriptor in the
4487 GOT, and a lazy PLT entry for this symbol. */
4501 /* Allocate space for a function descriptor. */
4510 else
4516 }
4518 /* Compute the total GOT size required by each TLS symbol in each
4519 range. Symbols may require up to 5 words in the GOT: an entry
4520 holding the TLS offset for the symbol, and an entry with a full TLS
4521 descriptor taking 4 words. */
4523 static void
4526 bfd_boolean subtract)
4527 {
4530 /* Allocate space for a GOT entry with the TLS offset of the
4531 symbol. */
4538 else
4542 /* If there's any TLSOFF relocation, mark the output file as not
4543 suitable for dlopening. This mark will remain even if we relax
4544 all such relocations, but this is not a problem, since we'll only
4545 do so for executables, and we definitely don't want anyone
4546 dlopening executables. */
4550 /* Allocate space for a TLS descriptor. */
4559 else
4562 }
4564 /* Compute the number of dynamic relocations and fixups that a symbol
4565 requires, and add (or subtract) from the grand and per-symbol
4566 totals. */
4568 static void
4571 bfd_boolean subtract)
4572 {
4576 {
4580 /* In the executable, TLS relocations to symbols that bind
4581 locally (including those that resolve to global TLS offsets)
4582 are resolved immediately, without any need for fixups or
4583 dynamic relocations. In shared libraries, however, we must
4584 emit dynamic relocations even for local symbols, because we
4585 don't know the module id the library is going to get at
4586 run-time, nor its TLS base offset. */
4591 }
4592 else
4593 {
4595 {
4601 }
4602 else
4603 {
4606 }
4610 {
4614 }
4615 else
4617 }
4620 {
4624 }
4631 }
4633 /* Look for opportunities to relax TLS relocations. We can assume
4634 we're linking the main executable or a static-tls library, since
4635 otherwise we wouldn't have got here. When relaxing, we have to
4636 first undo any previous accounting of TLS uses of fixups, dynamic
4637 relocations, GOT and PLT entries. */
4639 static void
4642 bfd_boolean relaxing)
4643 {
4650 {
4652 {
4656 }
4658 /* When linking an executable, we can always decay GOTTLSDESC to
4659 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise.
4660 When linking a static-tls shared library, using TLSMOFF is
4661 not an option, but we can still use GOTTLSOFF. When decaying
4662 to GOTTLSOFF, we must keep the GOT entry in range. We know
4663 it has to fit because we'll be trading the 4 words of hte TLS
4664 descriptor for a single word in the same range. */
4668 {
4672 }
4675 }
4677 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the
4678 main executable. We have to check whether the symbol's TLSOFF is
4679 in range for a setlos. For symbols with a hash entry, we can
4680 determine exactly what to do; for others locals, we don't have
4681 addresses handy, so we use the size of the TLS section as an
4682 approximation. If we get it wrong, we'll retain a GOT entry
4683 holding the TLS offset (without dynamic relocations or fixups),
4684 but we'll still optimize away the loads from it. Since TLS sizes
4685 are generally very small, it's probably not worth attempting to
4686 do better than this. */
4692 /* The above may hold for an undefweak TLS symbol, so make
4693 sure we don't have this case before accessing def.value
4694 and def.section. */
4706 {
4708 {
4712 }
4716 }
4718 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already
4719 have a #gottlsoff12 relocation for this entry, or if we can fit
4720 one more in the 12-bit (and 16-bit) ranges. */
4723 || (relaxing
4728 {
4730 {
4734 }
4738 }
4741 {
4744 }
4747 }
4749 /* Compute the total GOT and PLT size required by each symbol in each range. *
4750 Symbols may require up to 4 words in the GOT: an entry pointing to
4751 the symbol, an entry pointing to its function descriptor, and a
4752 private function descriptors taking two words. */
4754 static int
4756 {
4764 else
4765 {
4768 }
4771 }
4773 /* Determine the positive and negative ranges to be used by each
4774 offset range in the GOT. FDCUR and CUR, that must be aligned to a
4775 double-word boundary, are the minimum (negative) and maximum
4776 (positive) GOT offsets already used by previous ranges, except for
4777 an ODD entry that may have been left behind. GOT and FD indicate
4778 the size of GOT entries and function descriptors that must be
4779 placed within the range from -WRAP to WRAP. If there's room left,
4780 up to FDPLT bytes should be reserved for additional function
4781 descriptors. */
4785 bfd_signed_vma fdcur,
4786 bfd_signed_vma odd,
4787 bfd_signed_vma cur,
4788 bfd_vma got,
4789 bfd_vma fd,
4790 bfd_vma fdplt,
4791 bfd_vma tlsd,
4792 bfd_vma tlsdplt,
4793 bfd_vma wrap)
4794 {
4798 /* Start at the given initial points. */
4802 /* If we had an incoming odd word and we have any got entries that
4803 are going to use it, consume it, otherwise leave gad->odd at
4804 zero. We might force gad->odd to zero and return the incoming
4805 odd such that it is used by the next range, but then GOT entries
4806 might appear to be out of order and we wouldn't be able to
4807 shorten the GOT by one word if it turns out to end with an
4808 unpaired GOT entry. */
4810 {
4814 }
4815 else
4818 /* If we're left with an unpaired GOT entry, compute its location
4819 such that we can return it. Otherwise, if got doesn't require an
4820 odd number of words here, either odd was already zero in the
4821 block above, or it was set to zero because got was non-zero, or
4822 got was already zero. In the latter case, we want the value of
4823 odd to carry over to the return statement, so we don't want to
4824 reset odd unless the condition below is true. */
4826 {
4829 }
4831 /* Compute the tentative boundaries of this range. */
4836 /* If function descriptors took too much space, wrap some of them
4837 around. */
4839 {
4842 }
4844 /* If GOT entries took too much space, wrap some of them around.
4845 This may well cause gad->min to become lower than wrapmin. This
4846 will cause a relocation overflow later on, so we don't have to
4847 report it here . */
4849 {
4852 }
4854 /* Add TLS descriptors. */
4859 /* If TLS descriptors took too much space, wrap an integral number
4860 of them around. */
4862 {
4870 }
4872 /* If there is space left and we have function descriptors
4873 referenced in PLT entries that could take advantage of shorter
4874 offsets, place them now. */
4876 {
4877 bfd_vma fds;
4881 else
4888 }
4890 /* If there is more space left, try to place some more function
4891 descriptors for PLT entries. */
4893 {
4894 bfd_vma fds;
4898 else
4905 }
4907 /* If there is space left and we have TLS descriptors referenced in
4908 PLT entries that could take advantage of shorter offsets, place
4909 them now. */
4911 {
4912 bfd_vma tlsds;
4916 else
4922 }
4924 /* If there is more space left, try to place some more TLS
4925 descriptors for PLT entries. Although we could try to fit an
4926 additional TLS descriptor with half of it just before before the
4927 wrap point and another right past the wrap point, this might
4928 cause us to run out of space for the next region, so don't do
4929 it. */
4931 {
4932 bfd_vma tlsds;
4936 else
4942 }
4944 /* If odd was initially computed as an offset past the wrap point,
4945 wrap it around. */
4949 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed
4950 before returning, so do it here too. This guarantees that,
4951 should cur and fdcur meet at the wrap point, they'll both be
4952 equal to min. */
4956 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */
4962 }
4964 /* Compute the location of the next GOT entry, given the allocation
4965 data for a range. */
4969 {
4970 bfd_signed_vma ret;
4973 {
4974 /* If there was an odd word left behind, use it. */
4977 }
4978 else
4979 {
4980 /* Otherwise, use the word pointed to by cur, reserve the next
4981 as an odd word, and skip to the next pair of words, possibly
4982 wrapping around. */
4988 }
4991 }
4993 /* Compute the location of the next function descriptor entry in the
4994 GOT, given the allocation data for a range. */
4998 {
4999 /* If we're at the bottom, wrap around, and only then allocate the
5000 next pair of words. */
5004 }
5006 /* Compute the location of the next TLS descriptor entry in the GOT,
5007 given the allocation data for a range. */
5010 {
5011 bfd_signed_vma ret;
5017 /* If we're at the top of the region, wrap around to the bottom. */
5022 }
5024 /* Assign GOT offsets for every GOT entry and function descriptor.
5025 Doing everything in a single pass is tricky. */
5027 static int
5029 {
5050 {
5053 }
5057 {
5060 }
5062 {
5065 }
5079 {
5082 }
5086 {
5089 }
5091 {
5094 }
5099 }
5101 /* Assign GOT offsets to private function descriptors used by PLT
5102 entries (or referenced by 32-bit offsets), as well as PLT entries
5103 and lazy PLT entries. */
5105 static int
5107 {
5115 {
5118 /* We use the section's raw size to mark the location of the
5119 next PLT entry. */
5122 /* Figure out the length of this PLT entry based on the
5123 addressing mode we need to reach the function descriptor. */
5131 else
5135 }
5138 {
5141 /* If this entry is the one that gets the resolver stub, account
5142 for the additional instruction. */
5146 }
5149 {
5152 entry->tlsplt_entry
5158 {
5160 /* FIXME: here we use the size of the TLS section
5161 as an upper bound for the value of the TLS
5162 symbol, because we may not know the exact value
5163 yet. If we get it wrong, we'll just waste a
5164 word in the PLT, and we should never get even
5165 close to 32 KiB of TLS anyway. */
5170 else
5172 }
5174 {
5181 else
5183 }
5184 else
5185 {
5194 else
5196 }
5199 }
5202 }
5204 /* Cancel out any effects of calling _frvfdpic_assign_got_entries and
5205 _frvfdpic_assign_plt_entries. */
5207 static int
5209 {
5222 }
5224 /* Follow indirect and warning hash entries so that each got entry
5225 points to the final symbol definition. P must point to a pointer
5226 to the hash table we're traversing. Since this traversal may
5227 modify the hash table, we set this pointer to NULL to indicate
5228 we've made a potentially-destructive change to the hash table, so
5229 the traversal must be restarted. */
5230 static int
5232 {
5237 {
5249 NO_INSERT);
5252 {
5253 /* Merge the two entries. */
5257 }
5261 /* If we can't find this entry with the new bfd hash, re-insert
5262 it, and get the traversal restarted. */
5264 {
5269 /* Abort the traversal, since the whole table may have
5270 moved, and leave it up to the parent to restart the
5271 process. */
5274 }
5275 }
5278 }
5280 /* Compute the total size of the GOT, the PLT, the dynamic relocations
5281 section and the rofixup section. Assign locations for GOT and PLT
5282 entries. */
5284 static bfd_boolean
5287 {
5288 bfd_signed_vma odd;
5297 /* Compute the total size taken by entries in the 12-bit and 16-bit
5298 ranges, to tell how many PLT function descriptors we can bring
5299 into the 12-bit range without causing the 16-bit range to
5300 overflow. */
5306 else
5309 {
5312 }
5313 else
5318 /* Determine the ranges of GOT offsets that we can use for each
5319 range of addressing modes. */
5322 odd,
5326 limit,
5328 tlslimit,
5332 odd,
5344 odd,
5357 /* Now assign (most) GOT offsets. */
5359 gpinfop);
5363 /* If an odd word is the last word of the GOT, we don't need this
5364 word to be part of the GOT. */
5370 {
5373 }
5374 /* This will be non-NULL during relaxation. The assumption is that
5375 the size of one of these sections will never grow, only shrink,
5376 so we can use the larger buffer we allocated before. */
5378 {
5384 }
5387 /* Subtract the number of lzplt entries, since those will generate
5388 relocations in the pltrel section. */
5392 else
5397 {
5403 }
5409 {
5415 }
5418 {
5425 {
5431 }
5432 }
5434 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
5435 such that there's room for the additional instruction needed to
5436 call the resolver. Since _frvfdpic_assign_got_entries didn't
5437 account for them, our block size is 4 bytes smaller than the real
5438 block size. */
5440 {
5444 }
5446 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to
5447 actually assign lazy PLT entries addresses. */
5450 /* Save information that we're going to need to generate GOT and PLT
5451 entries. */
5462 /* Allocate a ret statement at plt_initial_offset, to be used by
5463 locally-resolved TLS descriptors. */
5468 gpinfop);
5470 /* Allocate the PLT section contents only after
5471 _frvfdpic_assign_plt_entries has a chance to add the size of the
5472 non-lazy PLT entries. */
5474 {
5478 {
5484 }
5485 }
5488 }
5490 /* Set the sizes of the dynamic sections. */
5492 static bfd_boolean
5495 {
5504 {
5505 /* Set the contents of the .interp section to the interpreter. */
5507 {
5512 }
5513 }
5519 {
5526 }
5531 /* Allocate space to save the summary information, we're going to
5532 use it if we're doing relaxations. */
5539 {
5556 }
5559 }
5561 static bfd_boolean
5564 {
5566 {
5569 /* Force a PT_GNU_STACK segment to be created. */
5573 /* Define __stacksize if it's not defined yet. */
5579 {
5592 /* This one must NOT be hidden. */
5593 }
5594 }
5597 }
5599 /* Look for opportunities to relax TLS relocations. We can assume
5600 we're linking the main executable or a static-tls library, since
5601 otherwise we wouldn't have got here. */
5603 static int
5605 {
5612 }
5614 static bfd_boolean
5617 {
5620 /* If we return early, we didn't change anything. */
5623 /* We'll do our thing when requested to relax the GOT section. */
5627 /* We can only relax when linking the main executable or a library
5628 that can't be dlopened. */
5632 /* If there isn't a TLS section for this binary, we can't do
5633 anything about its TLS relocations (it probably doesn't have
5634 any. */
5641 /* Now look for opportunities to relax, adjusting the GOT usage
5642 as needed. */
5644 _frvfdpic_relax_got_plt_entries,
5647 /* If we changed anything, reset and re-assign GOT and PLT entries. */
5650 {
5651 /* Clear GOT and PLT assignments. */
5653 _frvfdpic_reset_got_plt_entries,
5654 NULL);
5656 /* The owner of the TLS section is the output bfd. There should
5657 be a better way to get to it. */
5662 /* Repeat until we don't make any further changes. We could fail to
5663 introduce changes in a round if, for example, the 12-bit range is
5664 full, but we later release some space by getting rid of TLS
5665 descriptors in it. We have to repeat the whole process because
5666 we might have changed the size of a section processed before this
5667 one. */
5669 }
5672 }
5674 static bfd_boolean
5677 {
5682 /* objcopy and strip preserve what's already there using
5683 elf32_frvfdpic_copy_private_bfd_data (). */
5692 {
5695 /* Obtain the pointer to the __stacksize symbol. */
5699 {
5704 }
5706 /* Set the header p_memsz from the symbol value. We
5707 intentionally ignore the symbol section. */
5710 else
5714 }
5717 }
5719 /* Fill in code and data in dynamic sections. */
5721 static bfd_boolean
5724 {
5725 /* Nothing to be done for non-FDPIC. */
5727 }
5729 static bfd_boolean
5732 {
5739 {
5741 }
5743 {
5749 {
5761 {
5762 error:
5766 }
5773 {
5774 bfd_vma value =
5783 }
5784 }
5785 }
5787 {
5791 }
5795 {
5807 {
5808 Elf_Internal_Dyn dyn;
5813 {
5835 }
5836 }
5837 }
5840 }
5842 /* Adjust a symbol defined by a dynamic object and referenced by a
5843 regular object. */
5845 static bfd_boolean
5846 elf32_frvfdpic_adjust_dynamic_symbol
5849 {
5854 /* Make sure we know what is going on here. */
5861 /* If this is a weak symbol, and there is a real definition, the
5862 processor independent code will have arranged for us to see the
5863 real definition first, and we can just use the same value. */
5865 {
5870 }
5873 }
5875 /* Perform any actions needed for dynamic symbols. */
5877 static bfd_boolean
5878 elf32_frvfdpic_finish_dynamic_symbol
5883 {
5885 }
5887 /* Decide whether to attempt to turn absptr or lsda encodings in
5888 shared libraries into pcrel within the given input section. */
5890 static bfd_boolean
5891 frvfdpic_elf_use_relative_eh_frame
5895 {
5896 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
5898 }
5900 /* Adjust the contents of an eh_frame_hdr section before they're output. */
5902 static bfd_byte
5908 {
5920 == (_frvfdpic_osec_to_segment
5929 }
5931 /* Look through the relocs for a section during the first phase.
5933 Besides handling virtual table relocs for gc, we have to deal with
5934 all sorts of PIC-related relocations. We describe below the
5935 general plan on how to handle such relocations, even though we only
5936 collect information at this point, storing them in hash tables for
5937 perusal of later passes.
5939 32 relocations are propagated to the linker output when creating
5940 position-independent output. LO16 and HI16 relocations are not
5941 supposed to be encountered in this case.
5943 LABEL16 should always be resolvable by the linker, since it's only
5944 used by branches.
5946 LABEL24, on the other hand, is used by calls. If it turns out that
5947 the target of a call is a dynamic symbol, a PLT entry must be
5948 created for it, which triggers the creation of a private function
5949 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
5951 GPREL relocations require the referenced symbol to be in the same
5952 segment as _gp, but this can only be checked later.
5954 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
5955 exist. LABEL24 might as well, since it may require a PLT entry,
5956 that will require a got.
5958 Non-FUNCDESC GOT relocations require a GOT entry to be created
5959 regardless of whether the symbol is dynamic. However, since a
5960 global symbol that turns out to not be exported may have the same
5961 address of a non-dynamic symbol, we don't assign GOT entries at
5962 this point, such that we can share them in this case. A relocation
5963 for the GOT entry always has to be created, be it to offset a
5964 private symbol by the section load address, be it to get the symbol
5965 resolved dynamically.
5967 FUNCDESC GOT relocations require a GOT entry to be created, and
5968 handled as if a FUNCDESC relocation was applied to the GOT entry in
5969 an object file.
5971 FUNCDESC relocations referencing a symbol that turns out to NOT be
5972 dynamic cause a private function descriptor to be created. The
5973 FUNCDESC relocation then decays to a 32 relocation that points at
5974 the private descriptor. If the symbol is dynamic, the FUNCDESC
5975 relocation is propagated to the linker output, such that the
5976 dynamic linker creates the canonical descriptor, pointing to the
5977 dynamically-resolved definition of the function.
5979 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
5980 symbols that are assigned to the same segment as the GOT, but we
5981 can only check this later, after we know the complete set of
5982 symbols defined and/or exported.
5984 FUNCDESC GOTOFF relocations require a function descriptor to be
5985 created and, unless lazy binding is disabled or the symbol is not
5986 dynamic, a lazy PLT entry. Since we can't tell at this point
5987 whether a symbol is going to be dynamic, we have to decide later
5988 whether to create a lazy PLT entry or bind the descriptor directly
5989 to the private function.
5991 FUNCDESC_VALUE relocations are not supposed to be present in object
5992 files, but they may very well be simply propagated to the linker
5993 output, since they have no side effect.
5996 A function descriptor always requires a FUNCDESC_VALUE relocation.
5997 Whether it's in .plt.rel or not depends on whether lazy binding is
5998 enabled and on whether the referenced symbol is dynamic.
6000 The existence of a lazy PLT requires the resolverStub lazy PLT
6001 entry to be present.
6004 As for assignment of GOT, PLT and lazy PLT entries, and private
6005 descriptors, we might do them all sequentially, but we can do
6006 better than that. For example, we can place GOT entries and
6007 private function descriptors referenced using 12-bit operands
6008 closer to the PIC register value, such that these relocations don't
6009 overflow. Those that are only referenced with LO16 relocations
6010 could come next, but we may as well place PLT-required function
6011 descriptors in the 12-bit range to make them shorter. Symbols
6012 referenced with LO16/HI16 may come next, but we may place
6013 additional function descriptors in the 16-bit range if we can
6014 reliably tell that we've already placed entries that are ever
6015 referenced with only LO16. PLT entries are therefore generated as
6016 small as possible, while not introducing relocation overflows in
6017 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
6018 generated before or after PLT entries, but not intermingled with
6019 them, such that we can have more lazy PLT entries in range for a
6020 branch to the resolverStub. The resolverStub should be emitted at
6021 the most distant location from the first lazy PLT entry such that
6022 it's still in range for a branch, or closer, if there isn't a need
6023 for so many lazy PLT entries. Additional lazy PLT entries may be
6024 emitted after the resolverStub, as long as branches are still in
6025 range. If the branch goes out of range, longer lazy PLT entries
6026 are emitted.
6028 We could further optimize PLT and lazy PLT entries by giving them
6029 priority in assignment to closer-to-gr17 locations depending on the
6030 number of occurrences of references to them (assuming a function
6031 that's called more often is more important for performance, so its
6032 PLT entry should be faster), or taking hints from the compiler.
6033 Given infinite time and money... :-) */
6035 static bfd_boolean
6041 {
6061 {
6068 else
6069 {
6074 }
6077 {
6107 /* Fall through. */
6115 {
6119 }
6121 {
6124 }
6126 {
6129 {
6136 }
6137 picrel
6141 }
6142 else
6153 }
6156 {
6166 /* Fall through. */
6254 /* This relocation describes the C++ object vtable hierarchy.
6255 Reconstruct it for later use during GC. */
6261 /* This relocation describes which C++ vtable entries are actually
6262 used. Record for later use during GC. */
6282 bad_reloc:
6287 }
6288 }
6291 }
6293 \f
6294 /* Return the machine subcode from the ELF e_flags header. */
6296 static int
6299 {
6301 {
6311 }
6314 }
6316 /* Set the right machine number for a FRV ELF file. */
6318 static bfd_boolean
6321 {
6325 }
6326 \f
6327 /* Function to set the ELF flag bits. */
6329 static bfd_boolean
6332 flagword flags;
6333 {
6337 }
6339 /* Copy backend specific data from one object module to another. */
6341 static bfd_boolean
6345 {
6356 }
6358 /* Return true if the architecture described by elf header flag
6359 EXTENSION is an extension of the architecture described by BASE. */
6361 static bfd_boolean
6363 {
6367 /* CPU_GENERIC code can be merged with code for a specific
6368 architecture, in which case the result is marked as being
6369 for the specific architecture. Everything is therefore
6370 an extension of CPU_GENERIC. */
6383 }
6385 static bfd_boolean
6387 {
6401 /* Copy the stack size. */
6404 {
6409 {
6412 /* Rewrite the phdrs, since we're only called after they
6413 were first written. */
6421 }
6424 }
6427 }
6429 /* Merge backend specific data from an object file to the output
6430 object file when linking. */
6432 static bfd_boolean
6436 {
6450 #ifdef DEBUG
6454 #endif
6457 {
6460 }
6463 ;
6466 {
6467 /* Warn if different # of gprs are used. Note, 0 means nothing is
6468 said about the size of gprs. */
6472 ;
6475 ;
6480 else
6481 {
6483 {
6487 }
6490 {
6494 }
6495 }
6497 /* Warn if different # of fprs are used. Note, 0 means nothing is
6498 said about the size of fprs. */
6502 ;
6505 ;
6510 else
6511 {
6513 {
6518 }
6521 {
6526 }
6527 }
6529 /* Warn if different dword support was used. Note, 0 means nothing is
6530 said about the dword support. */
6534 ;
6537 ;
6542 else
6543 {
6545 {
6549 }
6552 {
6556 }
6557 }
6559 /* Or in flags that accumulate (ie, if one module uses it, mark that the
6560 feature is used. */
6562 | EF_FRV_MEDIA
6563 | EF_FRV_MULADD
6566 /* If any module was compiled without -G0, clear the G0 bit. */
6570 /* If any module was compiled without -mnopack, clear the mnopack bit. */
6574 /* We don't have to do anything if the pic flags are the same, or the new
6575 module(s) were compiled with -mlibrary-pic. */
6579 ;
6581 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
6582 flags if any from the new module. */
6586 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
6590 /* One module was compiled for pic and the other was not, see if we have
6591 had any relocations that are not pic-safe. */
6592 else
6593 {
6596 else
6597 {
6599 #ifndef FRV_NO_PIC_ERROR
6605 #endif
6606 }
6607 }
6609 /* Warn if different cpu is used (allow a specific cpu to override
6610 the generic cpu). */
6614 ;
6619 else
6620 {
6622 {
6633 }
6636 {
6647 }
6648 }
6650 /* Print out any mismatches from above. */
6652 {
6657 }
6659 /* Warn about any other mismatches */
6663 {
6669 }
6670 }
6672 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
6676 /* Update the old flags now with changes made above. */
6684 {
6690 else
6694 }
6700 }
6702 \f
6703 bfd_boolean
6706 PTR ptr;
6707 {
6709 flagword flags;
6713 /* Print normal ELF private data. */
6720 {
6730 }
6733 {
6737 }
6740 {
6745 }
6748 {
6752 }
6783 }
6785 \f
6786 /* Support for core dump NOTE sections. */
6788 static bfd_boolean
6790 {
6795 {
6799 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other
6800 hardcoded offsets and sizes listed below (and contained within
6801 this lexical block) refer to fields in the target's elf_prstatus
6802 struct. */
6804 /* `pr_cursig' is at offset 12. */
6807 /* `pr_pid' is at offset 24. */
6810 /* `pr_reg' is at offset 72. */
6813 /* Most grok_prstatus implementations set `raw_size' to the size
6814 of the pr_reg field. For Linux/FRV, we set `raw_size' to be
6815 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap'
6816 and `pr_interp_fdpic_loadmap', both of which (by design)
6817 immediately follow `pr_reg'. This will allow these fields to
6818 be viewed by GDB as registers.
6820 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and
6821 `pr_interp_fdpic_loadmap' are 4 bytes each. */
6825 }
6827 /* Make a ".reg/999" section. */
6830 }
6832 static bfd_boolean
6834 {
6836 {
6840 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */
6843 /* `pr_fname' is found at offset 28 and is 16 bytes long. */
6847 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */
6850 }
6852 /* Note that for some reason, a spurious space is tacked
6853 onto the end of the args in some (at least one anyway)
6854 implementations, so strip it off if it exists. */
6856 {
6862 }
6865 }
6866 #define ELF_ARCH bfd_arch_frv
6867 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
6868 #define ELF_MAXPAGESIZE 0x1000
6870 #define TARGET_BIG_SYM bfd_elf32_frv_vec
6873 #define elf_info_to_howto frv_info_to_howto_rela
6874 #define elf_backend_relocate_section elf32_frv_relocate_section
6875 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
6876 #define elf_backend_check_relocs elf32_frv_check_relocs
6877 #define elf_backend_object_p elf32_frv_object_p
6878 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
6880 #define elf_backend_can_gc_sections 1
6881 #define elf_backend_rela_normal 1
6883 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
6884 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
6885 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data
6886 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
6887 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
6889 #define elf_backend_want_got_sym 1
6890 #define elf_backend_got_header_size 0
6891 #define elf_backend_want_got_plt 0
6892 #define elf_backend_plt_readonly 1
6893 #define elf_backend_want_plt_sym 0
6894 #define elf_backend_plt_header_size 0
6896 #define elf_backend_finish_dynamic_sections \
6897 elf32_frv_finish_dynamic_sections
6899 #define elf_backend_grok_prstatus elf32_frv_grok_prstatus
6900 #define elf_backend_grok_psinfo elf32_frv_grok_psinfo
6904 #undef ELF_MAXPAGESIZE
6905 #define ELF_MAXPAGESIZE 0x4000
6907 #undef TARGET_BIG_SYM
6908 #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec
6909 #undef TARGET_BIG_NAME
6911 #undef elf32_bed
6912 #define elf32_bed elf32_frvfdpic_bed
6914 #undef elf_info_to_howto_rel
6915 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel
6917 #undef bfd_elf32_bfd_link_hash_table_create
6918 #define bfd_elf32_bfd_link_hash_table_create \
6919 frvfdpic_elf_link_hash_table_create
6920 #undef elf_backend_always_size_sections
6921 #define elf_backend_always_size_sections \
6922 elf32_frvfdpic_always_size_sections
6923 #undef elf_backend_modify_program_headers
6924 #define elf_backend_modify_program_headers \
6925 elf32_frvfdpic_modify_program_headers
6926 #undef bfd_elf32_bfd_copy_private_bfd_data
6927 #define bfd_elf32_bfd_copy_private_bfd_data \
6928 elf32_frvfdpic_copy_private_bfd_data
6930 #undef elf_backend_create_dynamic_sections
6931 #define elf_backend_create_dynamic_sections \
6932 elf32_frvfdpic_create_dynamic_sections
6933 #undef elf_backend_adjust_dynamic_symbol
6934 #define elf_backend_adjust_dynamic_symbol \
6935 elf32_frvfdpic_adjust_dynamic_symbol
6936 #undef elf_backend_size_dynamic_sections
6937 #define elf_backend_size_dynamic_sections \
6938 elf32_frvfdpic_size_dynamic_sections
6939 #undef bfd_elf32_bfd_relax_section
6940 #define bfd_elf32_bfd_relax_section \
6941 elf32_frvfdpic_relax_section
6942 #undef elf_backend_finish_dynamic_symbol
6943 #define elf_backend_finish_dynamic_symbol \
6944 elf32_frvfdpic_finish_dynamic_symbol
6945 #undef elf_backend_finish_dynamic_sections
6946 #define elf_backend_finish_dynamic_sections \
6947 elf32_frvfdpic_finish_dynamic_sections
6949 #undef elf_backend_can_make_relative_eh_frame
6950 #define elf_backend_can_make_relative_eh_frame \
6951 frvfdpic_elf_use_relative_eh_frame
6952 #undef elf_backend_can_make_lsda_relative_eh_frame
6953 #define elf_backend_can_make_lsda_relative_eh_frame \
6954 frvfdpic_elf_use_relative_eh_frame
6955 #undef elf_backend_encode_eh_address
6956 #define elf_backend_encode_eh_address \
6957 frvfdpic_elf_encode_eh_address
6959 #undef elf_backend_may_use_rel_p
6960 #define elf_backend_may_use_rel_p 1
6961 #undef elf_backend_may_use_rela_p
6962 #define elf_backend_may_use_rela_p 1
6963 /* We use REL for dynamic relocations only. */
6964 #undef elf_backend_default_use_rela_p
6965 #define elf_backend_default_use_rela_p 1
6967 #undef elf_backend_omit_section_dynsym
6968 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym