| blob | 6ad77ba77c417434d947e82c204def4beebfcd7b |
1 /* BFD back-end for IBM RS/6000 "XCOFF" files.
2 Copyright (C) 1990-2022 Free Software Foundation, Inc.
3 Written by Metin G. Ozisik, Mimi Phuong-Thao Vo, and John Gilmore.
4 Archive support from Damon A. Permezel.
5 Contributed by IBM Corporation and Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
57 /* Forward declare xcoff_rtype2howto for coffcode.h macro. */
60 /* coffcode.h needs these to be defined. */
61 #define RS6000COFF_C 1
63 #define SELECT_RELOC(internal, howto) \
64 { \
65 internal.r_type = howto->type; \
66 internal.r_size = \
67 ((howto->complain_on_overflow == complain_overflow_signed \
68 ? 0x80 \
69 : 0) \
70 | (howto->bitsize - 1)); \
71 }
73 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
74 #define COFF_LONG_FILENAMES
75 #define NO_COFF_SYMBOLS
76 #define RTYPE2HOWTO(cache_ptr, dst) xcoff_rtype2howto (cache_ptr, dst)
77 #define coff_mkobject _bfd_xcoff_mkobject
78 #define coff_bfd_is_local_label_name _bfd_xcoff_is_local_label_name
79 #ifdef AIX_CORE
85 #define CORE_FILE_P rs6000coff_core_p
86 #define coff_core_file_failing_command \
87 rs6000coff_core_file_failing_command
88 #define coff_core_file_failing_signal \
89 rs6000coff_core_file_failing_signal
90 #define coff_core_file_matches_executable_p \
91 rs6000coff_core_file_matches_executable_p
92 #define coff_core_file_pid \
93 _bfd_nocore_core_file_pid
94 #else
95 #define CORE_FILE_P _bfd_dummy_target
96 #define coff_core_file_failing_command \
97 _bfd_nocore_core_file_failing_command
98 #define coff_core_file_failing_signal \
99 _bfd_nocore_core_file_failing_signal
100 #define coff_core_file_matches_executable_p \
101 _bfd_nocore_core_file_matches_executable_p
102 #define coff_core_file_pid \
103 _bfd_nocore_core_file_pid
104 #endif
105 #define coff_SWAP_sym_in _bfd_xcoff_swap_sym_in
106 #define coff_SWAP_sym_out _bfd_xcoff_swap_sym_out
107 #define coff_SWAP_aux_in _bfd_xcoff_swap_aux_in
108 #define coff_SWAP_aux_out _bfd_xcoff_swap_aux_out
109 #define coff_swap_reloc_in xcoff_swap_reloc_in
110 #define coff_swap_reloc_out xcoff_swap_reloc_out
111 #define NO_COFF_RELOCS
113 #ifndef bfd_pe_print_pdata
114 #define bfd_pe_print_pdata NULL
115 #endif
119 /* The main body of code is in coffcode.h. */
122 static bool xcoff_write_armap_old
124 static bool xcoff_write_armap_big
134 static bool xcoff_ppc_relocate_section
137 static bool _bfd_xcoff_put_ldsymbol_name
145 static bool xcoff_generate_rtinit
150 /* Relocation functions */
160 {
211 };
215 {
216 xcoff_complain_overflow_dont_func,
217 xcoff_complain_overflow_bitfield_func,
218 xcoff_complain_overflow_signed_func,
219 xcoff_complain_overflow_unsigned_func,
220 };
222 /* Information about one member of an archive. */
223 struct member_layout
224 {
225 /* The archive member that this structure describes. */
228 /* The number of bytes of padding that must be inserted before the
229 start of the member in order to ensure that the section contents
230 are correctly aligned. */
233 /* The offset of MEMBER from the start of the archive (i.e. the end
234 of the leading padding). */
235 file_ptr offset;
237 /* The normalized name of MEMBER. */
240 /* The length of NAME, without padding. */
241 bfd_size_type namlen;
243 /* The length of NAME, with padding. */
244 bfd_size_type padded_namlen;
246 /* The size of MEMBER's header, including the name and magic sequence. */
247 bfd_size_type header_size;
249 /* The size of the MEMBER's contents. */
250 bfd_size_type contents_size;
252 /* The number of bytes of padding that must be inserted after MEMBER
253 in order to preserve even alignment. */
254 bfd_size_type trailing_padding;
255 };
257 /* A structure used for iterating over the members of an archive. */
258 struct archive_iterator
259 {
260 /* The archive itself. */
263 /* Information about the current archive member. */
266 /* Information about the next archive member. MEMBER is null if there
267 are no more archive members, in which case OFFSET is the offset of
268 the first unused byte. */
270 };
272 /* Initialize INFO so that it describes member MEMBER of archive ARCHIVE.
273 OFFSET is the even-padded offset of MEMBER, not including any leading
274 padding needed for section alignment. */
276 static void
279 {
283 {
289 else
298 info->leading_padding
301 }
303 }
305 /* Set up ITERATOR to iterate through archive ARCHIVE. */
307 static void
310 {
314 ? SIZEOF_AR_FILE_HDR_BIG
316 }
318 /* Make ITERATOR visit the first unvisited archive member. Return true
319 on success; return false if all members have been visited. */
321 static bool
323 {
335 }
337 /* We use our own tdata type. Its first field is the COFF tdata type,
338 so the COFF routines are compatible. */
340 bool
342 {
357 /* We set cputype to -1 to indicate that it has not been
358 initialized. */
364 /* text section alignment is different than the default */
368 }
370 /* Copy XCOFF data from one BFD to another. */
372 bool
374 {
386 else
387 {
391 else
393 }
396 else
397 {
401 else
403 }
411 }
413 /* I don't think XCOFF really has a notion of local labels based on
414 name. This will mean that ld -X doesn't actually strip anything.
415 The AIX native linker does not have a -X option, and it ignores the
416 -x option. */
418 bool
421 {
423 }
424 \f
425 void
427 {
432 {
434 }
435 else
436 {
439 }
446 }
448 unsigned int
450 {
455 {
457 }
458 else
459 {
462 }
470 }
472 void
475 {
480 {
482 _bfd_error_handler
483 /* xgettext: c-format */
491 {
495 }
496 else
501 /* RS/6000 "csect" auxents.
502 There is always a CSECT auxiliary entry. But functions can
503 have FCN ones too. In this case, CSECT is always the last
504 one. */
509 {
513 /* We don't have to hack bitfields in x_smtyp because it's
514 defined by shifts-and-ands, which are equivalent on all
515 byte orders. */
520 }
521 else
522 {
523 /* x_exptr isn't supported. */
530 }
537 /* PE defines some extra fields; we zero them out for
538 safety. */
555 }
556 }
558 unsigned int
561 {
567 {
569 _bfd_error_handler
570 /* xgettext: c-format */
578 {
582 }
583 else
588 /* RS/6000 "csect" auxents */
593 {
597 /* We don't have to hack bitfields in x_smtyp because it's
598 defined by shifts-and-ands, which are equivalent on all
599 byte orders. */
604 }
605 else
606 {
612 }
630 }
633 }
634 \f
635 /* The XCOFF reloc table.
636 XCOFF relocations aren't defined only by the type field r_type.
637 The bitsize and whether they are signed or not, are defined by
638 r_size field. Thus, it's complicated to create a constant
639 table reference every possible relocation.
640 This table contains the "default" relocation and few modified
641 relocations what were already there. It's enough when
642 xcoff_rtype2howto is called.
643 For relocations from an input bfd to an output bfd, the default
644 relocation is retrieved and when manually adapted.
646 For now, it seems to be enought. */
648 reloc_howto_type xcoff_howto_table[] =
649 {
650 /* 0x00: Standard 32 bit relocation. */
665 /* 0x01: 32 bit relocation, but store negative value. */
680 /* 0x02: 32 bit PC relative relocation. */
695 /* 0x03: 16 bit TOC relative relocation. */
710 /* 0x04: Same as R_TOC */
725 /* 0x05: External TOC relative symbol. */
740 /* 0x06: Local TOC relative symbol. */
757 /* 0x08: Same as R_RBA. */
774 /* 0x0a: Same as R_RBR. */
791 /* 0x0c: Same as R_POS. */
806 /* 0x0d: Same as R_POS. */
823 /* 0x0f: Non-relocating reference. Bitsize is 1 so that r_rsize is 0. */
842 /* 0x13: Same as R_TOC. */
857 /* 0x14: Modifiable relative branch. */
872 /* 0x15: Modifiable absolute branch. */
887 /* 0x16: Modifiable call absolute indirect. */
902 /* 0x17: Modifiable call relative. */
917 /* 0x18: Modifiable branch absolute. */
932 /* 0x19: Modifiable branch absolute. */
947 /* 0x1a: Modifiable branch relative. */
962 /* 0x1b: Modifiable branch absolute. */
977 /* 0x1c: 16 bit Non modifiable absolute branch. */
992 /* 0x1d: Modifiable branch relative. */
1007 /* 0x1e: Modifiable branch relative. */
1024 /* 0x20: General-dynamic TLS relocation. */
1039 /* 0x21: Initial-exec TLS relocation. */
1054 /* 0x22: Local-dynamic TLS relocation. */
1069 /* 0x23: Local-exec TLS relocation. */
1084 /* 0x24: TLS relocation. */
1100 /* 0x25: TLS module relocation. */
1126 /* 0x30: High-order 16 bit TOC relative relocation. */
1141 /* 0x31: Low-order 16 bit TOC relative relocation. */
1156 };
1158 void
1160 {
1164 /* Default howto layout works most of the time */
1167 /* Special case some 16 bit reloc */
1169 {
1176 }
1178 /* The r_size field of an XCOFF reloc encodes the bitsize of the
1179 relocation, as well as indicating whether it is signed or not.
1180 Doublecheck that the relocation information gathered from the
1181 type matches this information. The bitsize is not significant
1182 for R_REF relocs. */
1187 }
1189 reloc_howto_type *
1191 bfd_reloc_code_real_type code)
1192 {
1194 {
1230 }
1231 }
1236 {
1241 i++)
1247 }
1248 \f
1249 /* XCOFF archive support. The original version of this code was by
1250 Damon A. Permezel. It was enhanced to permit cross support, and
1251 writing archive files, by Ian Lance Taylor, Cygnus Support.
1253 XCOFF uses its own archive format. Everything is hooked together
1254 with file offset links, so it is possible to rapidly update an
1255 archive in place. Of course, we don't do that. An XCOFF archive
1256 has a real file header, not just an ARMAG string. The structure of
1257 the file header and of each archive header appear below.
1259 An XCOFF archive also has a member table, which is a list of
1260 elements in the archive (you can get that by looking through the
1261 linked list, but you have to read a lot more of the file). The
1262 member table has a normal archive header with an empty name. It is
1263 normally (and perhaps must be) the second to last entry in the
1264 archive. The member table data is almost printable ASCII. It
1265 starts with a 12 character decimal string which is the number of
1266 entries in the table. For each entry it has a 12 character decimal
1267 string which is the offset in the archive of that member. These
1268 entries are followed by a series of null terminated strings which
1269 are the member names for each entry.
1271 Finally, an XCOFF archive has a global symbol table, which is what
1272 we call the armap. The global symbol table has a normal archive
1273 header with an empty name. It is normally (and perhaps must be)
1274 the last entry in the archive. The contents start with a four byte
1275 binary number which is the number of entries. This is followed by
1276 a that many four byte binary numbers; each is the file offset of an
1277 entry in the archive. These numbers are followed by a series of
1278 null terminated strings, which are symbol names.
1280 AIX 4.3 introduced a new archive format which can handle larger
1281 files and also 32- and 64-bit objects in the same archive. The
1282 things said above remain true except that there is now more than
1283 one global symbol table. The one is used to index 32-bit objects,
1284 the other for 64-bit objects.
1286 The new archives (recognizable by the new ARMAG string) has larger
1287 field lengths so that we cannot really share any code. Also we have
1288 to take care that we are not generating the new form of archives
1289 on AIX 4.2 or earlier systems. */
1291 /* PR 21786: The PE/COFF standard does not require NUL termination for any of
1292 the ASCII fields in the archive headers. So in order to be able to extract
1293 numerical values we provide our own versions of strtol and strtoll which
1294 take a maximum length as an additional parameter. Also - just to save space,
1295 we omit the endptr return parameter, since we know that it is never used. */
1297 static long
1299 {
1307 }
1309 static long long
1311 {
1319 }
1321 /* Macro to read an ASCII value stored in an archive header field. */
1322 #define GET_VALUE_IN_FIELD(VAR, FIELD, BASE) \
1323 do \
1324 { \
1325 (VAR) = (sizeof (VAR) > sizeof (long) \
1326 ? _bfd_strntoll (FIELD, BASE, sizeof FIELD) \
1327 : _bfd_strntol (FIELD, BASE, sizeof FIELD)); \
1328 } \
1329 while (0)
1331 #define EQ_VALUE_IN_FIELD(VAR, FIELD, BASE) \
1332 (sizeof (VAR) > sizeof (long) \
1333 ? (VAR) == _bfd_strntoll (FIELD, BASE, sizeof FIELD) \
1334 : (VAR) == _bfd_strntol (FIELD, BASE, sizeof FIELD))
1336 /* Read in the armap of an XCOFF archive. */
1338 bool
1340 {
1341 file_ptr off;
1343 bfd_size_type sz;
1350 {
1353 }
1356 {
1357 /* This is for the old format. */
1362 {
1365 }
1370 /* The symbol table starts with a normal archive header. */
1375 /* Skip the name (normally empty). */
1383 {
1386 }
1388 /* Read in the entire symbol table. */
1393 /* Ensure strings are NULL terminated so we don't wander off the
1394 end of the buffer. */
1397 /* The symbol table starts with a four byte count. */
1401 {
1404 }
1411 /* After the count comes a list of four byte file offsets. */
1416 }
1417 else
1418 {
1419 /* This is for the new format. */
1424 {
1427 }
1432 /* The symbol table starts with a normal archive header. */
1437 /* Skip the name (normally empty). */
1445 {
1448 }
1450 /* Read in the entire symbol table. */
1455 /* Ensure strings are NULL terminated so we don't wander off the
1456 end of the buffer. */
1459 /* The symbol table starts with an eight byte count. */
1463 {
1466 }
1473 /* After the count comes a list of eight byte file offsets. */
1478 }
1480 /* After the file offsets come null terminated symbol names. */
1485 {
1487 {
1490 }
1492 }
1498 }
1500 /* See if this is an XCOFF archive. */
1502 bfd_cleanup
1504 {
1510 {
1514 }
1518 {
1521 }
1530 /* Cleared by bfd_zalloc above.
1531 bfd_ardata (abfd)->cache = NULL;
1532 bfd_ardata (abfd)->archive_head = NULL;
1533 bfd_ardata (abfd)->symdefs = NULL;
1534 bfd_ardata (abfd)->extended_names = NULL;
1535 bfd_ardata (abfd)->extended_names_size = 0; */
1537 /* Now handle the two formats. */
1539 {
1540 /* This is the old format. */
1543 /* Copy over the magic string. */
1546 /* Now read the rest of the file header. */
1549 {
1553 }
1564 }
1565 else
1566 {
1567 /* This is the new format. */
1570 /* Copy over the magic string. */
1573 /* Now read the rest of the file header. */
1576 {
1580 }
1592 }
1595 {
1596 error_ret:
1598 error_ret_restore:
1601 }
1604 }
1606 /* Read the archive header in an XCOFF archive. */
1610 {
1611 bfd_size_type namlen;
1613 bfd_size_type amt;
1616 {
1634 {
1637 }
1643 }
1644 else
1645 {
1663 {
1666 }
1672 }
1674 /* Size occupied by the header above that covered in the fixed
1675 SIZEOF_AR_HDR or SIZEOF_AR_HDR_BIG. */
1678 /* Skip over the XCOFFARFMAG at the end of the file name. */
1683 }
1685 /* Open the next element in an XCOFF archive. */
1687 bfd *
1689 {
1690 file_ptr filestart;
1694 {
1697 }
1700 {
1702 {
1706 }
1707 else
1708 {
1715 }
1717 /* Sanity check that we aren't pointing into the previous element. */
1719 {
1722 }
1727 {
1730 }
1731 }
1732 else
1733 {
1735 {
1739 }
1740 else
1741 {
1748 }
1750 /* Sanity check that we aren't pointing into the previous element. */
1752 {
1755 }
1760 {
1763 }
1764 }
1767 }
1769 /* Stat an element in an XCOFF archive. */
1771 int
1773 {
1775 {
1778 }
1781 {
1789 }
1790 else
1791 {
1799 }
1802 }
1804 /* Normalize a file name for inclusion in an archive. */
1808 {
1815 filename++;
1816 else
1819 }
1821 /* Write out an XCOFF armap. */
1823 static bool
1826 {
1843 /* We need spaces, not null bytes, in the header. */
1849 != SIZEOF_AR_HDR
1862 {
1867 }
1870 {
1878 }
1881 {
1887 }
1890 }
1897 #define PRINT20(d, v) \
1898 sprintf (buff20, FMT20, (uint64_t) (v)), \
1899 memcpy ((void *) (d), buff20, 20)
1901 #define PRINT12(d, v) \
1902 sprintf (buff20, FMT12, (int)(v)), \
1903 memcpy ((void *) (d), buff20, 12)
1905 #define PRINT12_OCTAL(d, v) \
1906 sprintf (buff20, FMT12_OCTAL, (unsigned int)(v)), \
1907 memcpy ((void *) (d), buff20, 12)
1909 #define PRINT4(d, v) \
1910 sprintf (buff20, FMT4, (int)(v)), \
1911 memcpy ((void *) (d), buff20, 4)
1913 #define READ20(d, v) \
1914 buff20[20] = 0, \
1915 memcpy (buff20, (d), 20), \
1916 (v) = bfd_scan_vma (buff20, (const char **) NULL, 10)
1918 static bool
1920 {
1923 /* Limit pad to <= 4096. */
1932 }
1934 static bool
1936 {
1937 bfd_size_type remaining;
1946 {
1952 }
1955 {
1959 }
1962 }
1964 static bool
1967 {
1976 /* First, we look through the symbols and work out which are
1977 from 32-bit objects and which from 64-bit ones. */
1984 {
1987 {
1990 {
1991 sym_64++;
1993 }
1994 else
1995 {
1996 sym_32++;
1998 }
1999 i++;
2000 }
2001 }
2003 /* A quick sanity check... */
2005 /* Explicit cast to int for compiler. */
2010 /* xcoff_write_archive_contents_big passes nextoff in symoff. */
2016 /* Write out the symbol table.
2017 Layout :
2019 standard big archive header
2020 0x0000 ar_size [0x14]
2021 0x0014 ar_nxtmem [0x14]
2022 0x0028 ar_prvmem [0x14]
2023 0x003C ar_date [0x0C]
2024 0x0048 ar_uid [0x0C]
2025 0x0054 ar_gid [0x0C]
2026 0x0060 ar_mod [0x0C]
2027 0x006C ar_namelen[0x04]
2028 0x0070 ar_fmag [SXCOFFARFMAG]
2030 Symbol table
2031 0x0072 num_syms [0x08], binary
2032 0x0078 offsets [0x08 * num_syms], binary
2033 0x0086 + 0x08 * num_syms names [??]
2034 ?? pad to even bytes.
2035 */
2038 {
2043 bfd_vma symbol_table_size =
2044 SIZEOF_AR_HDR_BIG
2045 + SXCOFFARFMAG
2060 else
2077 /* loop over the 32 bit offsets */
2081 {
2084 {
2086 {
2089 }
2090 i++;
2091 }
2092 }
2094 /* loop over the 32 bit symbol names */
2099 {
2102 {
2104 {
2107 }
2108 i++;
2109 }
2110 }
2118 }
2119 else
2123 {
2128 bfd_vma symbol_table_size =
2129 SIZEOF_AR_HDR_BIG
2130 + SXCOFFARFMAG
2157 /* loop over the 64 bit offsets */
2161 {
2164 {
2166 {
2169 }
2170 i++;
2171 }
2172 }
2174 /* loop over the 64 bit symbol names */
2179 {
2182 {
2184 {
2187 }
2188 i++;
2189 }
2190 }
2197 }
2198 else
2202 }
2204 bool
2207 {
2210 else
2212 }
2214 /* Write out an XCOFF archive. We always write an entire archive,
2215 rather than fussing with the freelist and so forth. */
2217 static bool
2219 {
2222 bfd_size_type count;
2223 bfd_size_type total_namlen;
2231 bfd_size_type size;
2243 {
2247 {
2251 }
2253 {
2258 {
2259 /* Assume we just "made" the member, and fake it. */
2267 }
2269 {
2272 }
2275 {
2280 }
2294 }
2295 }
2308 i++)
2309 {
2310 bfd_size_type namlen;
2314 {
2317 }
2324 /* We need spaces, not null bytes, in the header. */
2344 }
2348 /* Write out the member table. */
2365 size = (SIZEOF_AR_HDR
2366 + XCOFFARMAG_ELEMENT_SIZE
2368 + total_namlen
2376 else
2379 /* We need spaces, not null bytes, in the header. */
2395 {
2400 }
2402 {
2404 bfd_size_type namlen;
2410 }
2415 /* Write out the armap, if appropriate. */
2418 else
2419 {
2425 }
2427 /* Write out the archive file header. */
2429 /* We need spaces, not null bytes, in the header. */
2440 }
2442 static bool
2444 {
2446 bfd_size_type count;
2447 bfd_size_type total_namlen;
2455 bfd_size_type size;
2457 bfd_vma member_table_size;
2466 /* Calculate count and total_namlen. */
2472 {
2476 && ! hasobjects
2481 {
2486 }
2489 {
2494 {
2495 /* Assume we just "made" the member, and fake it. */
2503 }
2505 {
2508 }
2511 {
2516 }
2530 }
2531 }
2535 {
2539 }
2544 i++)
2545 {
2546 bfd_size_type namlen;
2555 {
2558 }
2568 {
2571 }
2575 }
2578 {
2581 }
2583 /* Write out the member table.
2584 Layout :
2586 standard big archive header
2587 0x0000 ar_size [0x14]
2588 0x0014 ar_nxtmem [0x14]
2589 0x0028 ar_prvmem [0x14]
2590 0x003C ar_date [0x0C]
2591 0x0048 ar_uid [0x0C]
2592 0x0054 ar_gid [0x0C]
2593 0x0060 ar_mod [0x0C]
2594 0x006C ar_namelen[0x04]
2595 0x0070 ar_fmag [0x02]
2597 Member table
2598 0x0072 count [0x14]
2599 0x0086 offsets [0x14 * counts]
2600 0x0086 + 0x14 * counts names [??]
2601 ?? pad to even bytes.
2602 */
2607 member_table_size = (SIZEOF_AR_HDR_BIG
2608 + SXCOFFARFMAG
2609 + XCOFFARMAGBIG_ELEMENT_SIZE
2616 {
2619 }
2628 else
2644 {
2647 }
2650 {
2653 }
2658 {
2665 }
2677 /* Write out the armap, if appropriate. */
2681 else
2682 {
2685 /* Save nextoff in fhdr.symoff so the armap routine can use it. */
2691 }
2693 /* Write out the archive file header. */
2701 }
2703 bool
2705 {
2708 else
2710 }
2711 \f
2712 /* We can't use the usual coff_sizeof_headers routine, because AIX
2713 always uses an a.out header. */
2715 int
2718 {
2724 else
2729 {
2730 /* There can be additional sections just for dealing with overflow in
2731 reloc and lineno counts. But the numbers of relocs and lineno aren't
2732 known when bfd_sizeof_headers is called, so we compute them by
2733 summing the numbers from input sections. */
2734 struct nbr_reloc_lineno
2735 {
2738 };
2744 /* Although the number of sections is known, the maximum value of
2745 section->index isn't (because some sections may have been removed).
2746 Don't try to renumber sections, just compute the upper bound. */
2752 /* Allocate the per section counters. It could be possible to use a
2753 preallocated array as the number of sections is limited on XCOFF,
2754 but this creates a maintainance issue. */
2759 /* Sum. */
2764 {
2768 }
2770 /* Add the size of a section for each section with an overflow. */
2772 {
2778 }
2781 }
2784 }
2785 \f
2786 /* Routines to swap information in the XCOFF .loader section. If we
2787 ever need to write an XCOFF loader, this stuff will need to be
2788 moved to another file shared by the linker (which XCOFF calls the
2789 ``binder'') and the loader. */
2791 /* Swap in the ldhdr structure. */
2793 static void
2795 {
2806 }
2808 /* Swap out the ldhdr structure. */
2810 static void
2812 {
2823 }
2825 /* Swap in the ldsym structure. */
2827 static void
2829 {
2837 }
2844 }
2846 /* Swap out the ldsym structure. */
2848 static void
2850 {
2855 else
2856 {
2860 }
2867 }
2869 static void
2871 {
2881 }
2883 static unsigned int
2885 {
2895 }
2897 /* Swap in the ldrel structure. */
2899 static void
2901 {
2908 }
2910 /* Swap out the ldrel structure. */
2912 static void
2914 {
2921 }
2922 \f
2924 bool
2931 bfd_vma val ATTRIBUTE_UNUSED,
2932 bfd_vma addend ATTRIBUTE_UNUSED,
2936 {
2938 }
2940 bool
2947 bfd_vma val ATTRIBUTE_UNUSED,
2948 bfd_vma addend ATTRIBUTE_UNUSED,
2952 {
2953 _bfd_error_handler
2954 /* xgettext: c-format */
2959 }
2961 bool
2968 bfd_vma val,
2969 bfd_vma addend,
2973 {
2976 }
2978 bool
2985 bfd_vma val,
2986 bfd_vma addend,
2990 {
2993 }
2995 bool
3002 bfd_vma val,
3003 bfd_vma addend,
3007 {
3010 /* A PC relative reloc includes the section address. */
3017 }
3019 bool
3026 bfd_vma val,
3027 bfd_vma addend ATTRIBUTE_UNUSED,
3031 {
3040 {
3042 {
3043 _bfd_error_handler
3044 /* xgettext: c-format */
3049 }
3054 }
3056 /* We can't use the preexisting value written down by the
3057 assembly, as R_TOCU needs to be adjusted when the final
3058 R_TOCL value is signed. */
3067 }
3069 bool
3076 bfd_vma val,
3077 bfd_vma addend,
3081 {
3088 }
3090 static bool
3097 bfd_vma val,
3098 bfd_vma addend,
3102 {
3104 bfd_vma section_offset;
3114 /* If we see an R_BR or R_RBR reloc which is jumping to global
3115 linkage code, and it is followed by an appropriate cror nop
3116 instruction, we replace the cror with lwz r2,20(r1). This
3117 restores the TOC after the glink code. Contrariwise, if the
3118 call is followed by a lwz r2,20(r1), but the call is not
3119 going to global linkage code, we can replace the load with a
3120 cror. */
3125 {
3132 /* The _ptrgl function is magic. It is used by the AIX
3133 compiler to call a function through a pointer. */
3135 {
3141 }
3142 else
3143 {
3146 }
3147 }
3149 {
3150 /* Normally, this relocation is against a defined symbol. In the
3151 case where this is a partial link and the output section offset
3152 is greater than 2^25, the linker will return an invalid error
3153 message that the relocation has been truncated. Yes it has been
3154 truncated but no it not important. For this case, disable the
3155 overflow checking. */
3158 }
3160 /* Check if a stub is needed. */
3163 {
3168 {
3173 }
3179 }
3181 /* The original PC-relative relocation is biased by -r_vaddr, so adding
3182 the value below will give the absolute target address. */
3193 {
3195 bfd_vma insn;
3197 /* Turn the relative branch into an absolute one by setting the
3198 AA bit. */
3204 /* Make the howto absolute too. */
3207 }
3208 else
3209 {
3210 /* Use a PC-relative howto and subtract the instruction's address
3211 from the target address we calculated above. */
3216 }
3218 }
3220 bool
3227 bfd_vma val ATTRIBUTE_UNUSED,
3228 bfd_vma addend,
3232 {
3237 /* A PC relative reloc includes the section address. */
3244 }
3246 bool
3253 bfd_vma val,
3254 bfd_vma addend,
3258 {
3266 /* R_TLSML is handled by the loader but must be from a
3267 TOC entry targeting itslef. This is already verified in
3268 xcoff_link_add_symbols.
3269 The value must be 0. */
3271 {
3274 }
3276 /* The target symbol should always be available even if it's not
3277 exported. */
3280 /* TLS relocations must target a TLS symbol. */
3282 {
3286 _bfd_error_handler
3290 }
3292 /* Local TLS relocations must target a local symbol, ie
3293 non-imported. */
3298 {
3302 _bfd_error_handler
3306 }
3308 /* R_TLSM are relocations used by the loader.
3309 The value must be 0. */
3311 {
3314 }
3316 /* Other TLS relocations aims to put offsets from TLS pointers
3317 starting at -0x7c00 (or -0x7800 in XCOFF64). It becomes a
3318 simple R_POS relocation as long as .tdata and .tbss addresses
3319 start at the same value. This is done in aix ld scripts.
3320 TODO: implement optimization when tls size is < 62K. */
3324 }
3326 static bool
3328 bfd_vma val ATTRIBUTE_UNUSED,
3329 bfd_vma relocation ATTRIBUTE_UNUSED,
3331 howto ATTRIBUTE_UNUSED)
3332 {
3334 }
3336 static bool
3338 bfd_vma val,
3339 bfd_vma relocation,
3341 {
3345 /* Get the values to be added together. For signed and unsigned
3346 relocations, we assume that all values should be truncated to
3347 the size of an address. For bitfields, all the bits matter.
3348 See also bfd_check_overflow. */
3353 /* Much like unsigned, except no trimming with addrmask. In
3354 addition, the sum overflows if there is a carry out of
3355 the bfd_vma, i.e., the sum is less than either input
3356 operand. */
3360 /* Bitfields are sometimes used for signed numbers; for
3361 example, a 13-bit field sometimes represents values in
3362 0..8191 and sometimes represents values in -4096..4095.
3363 If the field is signed and a is -4095 (0x1001) and b is
3364 -1 (0x1fff), the sum is -4096 (0x1000), but (0x1001 +
3365 0x1fff is 0x3000). It's not clear how to handle this
3366 everywhere, since there is not way to know how many bits
3367 are significant in the relocation, but the original code
3368 assumed that it was fully sign extended, and we will keep
3369 that assumption. */
3373 {
3374 /* Some bits out of the field are set. This might not
3375 be a problem: if this is a signed bitfield, it is OK
3376 iff all the high bits are set, including the sign
3377 bit. We'll try setting all but the most significant
3378 bit in the original relocation value: if this is all
3379 ones, we are OK, assuming a signed bitfield. */
3384 }
3386 /* We just assume (b & ~ fieldmask) == 0. */
3388 /* We explicitly permit wrap around if this relocation
3389 covers the high bit of an address. The Linux kernel
3390 relies on it, and it is the only way to write assembler
3391 code which can run when loaded at a location 0x80000000
3392 away from the location at which it is linked. */
3399 {
3400 /* There was a carry out, or the field overflow. Test
3401 for signed operands again. Here is the overflow test
3402 is as for complain_overflow_signed. */
3405 }
3408 }
3410 static bool
3412 bfd_vma val,
3413 bfd_vma relocation,
3415 {
3419 /* Get the values to be added together. For signed and unsigned
3420 relocations, we assume that all values should be truncated to
3421 the size of an address. For bitfields, all the bits matter.
3422 See also bfd_check_overflow. */
3430 /* If any sign bits are set, all sign bits must be set.
3431 That is, A must be a valid negative address after
3432 shifting. */
3438 /* We only need this next bit of code if the sign bit of B
3439 is below the sign bit of A. This would only happen if
3440 SRC_MASK had fewer bits than BITSIZE. Note that if
3441 SRC_MASK has more bits than BITSIZE, we can get into
3442 trouble; we would need to verify that B is in range, as
3443 we do for A above. */
3446 {
3447 /* Set all the bits above the sign bit. */
3449 }
3453 /* Now we can do the addition. */
3456 /* See if the result has the correct sign. Bits above the
3457 sign bit are junk now; ignore them. If the sum is
3458 positive, make sure we did not have all negative inputs;
3459 if the sum is negative, make sure we did not have all
3460 positive inputs. The test below looks only at the sign
3461 bits, and it really just
3462 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
3463 */
3469 }
3471 static bool
3473 bfd_vma val,
3474 bfd_vma relocation,
3476 {
3480 /* Get the values to be added together. For signed and unsigned
3481 relocations, we assume that all values should be truncated to
3482 the size of an address. For bitfields, all the bits matter.
3483 See also bfd_check_overflow. */
3489 /* Checking for an unsigned overflow is relatively easy:
3490 trim the addresses and add, and trim the result as well.
3491 Overflow is normally indicated when the result does not
3492 fit in the field. However, we also need to consider the
3493 case when, e.g., fieldmask is 0x7fffffff or smaller, an
3494 input is 0x80000000, and bfd_vma is only 32 bits; then we
3495 will get sum == 0, but there is an overflow, since the
3496 inputs did not fit in the field. Instead of doing a
3497 separate test, we can check for this by or-ing in the
3498 operands when testing for the sum overflowing its final
3499 field. */
3507 }
3509 /* This is the relocation function for the RS/6000/POWER/PowerPC.
3510 This is currently the only processor which uses XCOFF; I hope that
3511 will never change.
3513 The original version was based on two documents:
3514 the PowerPC AIX Version 4 Application Binary Interface, First
3515 Edition (April 1992), and the PowerOpen ABI, Big-Endian
3516 32-Bit Hardware Implementation (June 30, 1994). Differences
3517 between the documents are noted below.
3518 Now, IBM has released an official documentation about XCOFF
3519 format:
3520 https://www.ibm.com/support/knowledgecenter/ssw_aix_72/filesreference/XCOFF.html
3522 Unsupported r_type's
3524 R_RTB:
3525 R_RRTBI:
3526 R_RRTBA:
3528 These relocs are defined by the PowerPC ABI to be
3529 relative branches which use half of the difference
3530 between the symbol and the program counter. I can't
3531 quite figure out when this is useful. These relocs are
3532 not defined by the PowerOpen ABI.
3534 Supported r_type's
3536 R_POS:
3537 Simple positive relocation.
3539 R_NEG:
3540 Simple negative relocation.
3542 R_REL:
3543 Simple PC relative relocation.
3545 R_TOC:
3546 TOC relative relocation. The value in the instruction in
3547 the input file is the offset from the input file TOC to
3548 the desired location. We want the offset from the final
3549 TOC to the desired location. We have:
3550 isym = iTOC + in
3551 iinsn = in + o
3552 osym = oTOC + on
3553 oinsn = on + o
3554 so we must change insn by on - in.
3555 This relocation allows the linker to perform optimizations
3556 by transforming a load instruction into a add-immediate
3557 when possible. The relocation is, then, changed to R_TRLA
3558 in the output file.
3559 TODO: Currently, the optimisation isn't implemented.
3561 R_TRL:
3562 TOC relative relocation. Same as R_TOC, except that
3563 the optimization isn't allowed
3565 R_TRLA:
3566 TOC relative relocation. This is a TOC relative load
3567 address instruction which have been changed to an add-
3568 immediate instruction.
3570 R_GL:
3571 GL linkage relocation. The value of this relocation
3572 is the address of the external symbol in the TOC
3573 section.
3575 R_TCL:
3576 Local object TOC address. I can't figure out the
3577 difference between this and case R_GL.
3579 R_RL:
3580 The PowerPC AIX ABI describes this as a load which may be
3581 changed to a load address. The PowerOpen ABI says this
3582 is the same as case R_POS.
3584 R_RLA:
3585 The PowerPC AIX ABI describes this as a load address
3586 which may be changed to a load. The PowerOpen ABI says
3587 this is the same as R_POS.
3589 R_REF:
3590 Not a relocation but a way to prevent the garbage
3591 collector of AIX linker to remove symbols.
3592 This is not needed in our case.
3594 R_BA:
3595 The PowerOpen ABI says this is the same as R_RBA.
3597 R_RBA:
3598 Absolute branch which may be modified to become a
3599 relative branch.
3601 R_BR:
3602 The PowerOpen ABI says this is the same as R_RBR.
3604 R_RBR:
3605 A relative branch which may be modified to become an
3606 absolute branch.
3608 R_CAI:
3609 The PowerPC ABI defines this as an absolute call which
3610 may be modified to become a relative call. The PowerOpen
3611 ABI does not define this relocation type.
3613 R_CREL:
3614 The PowerPC ABI defines this as a relative call which may
3615 be modified to become an absolute call. The PowerOpen
3616 ABI does not define this relocation type.
3618 R_RBAC:
3619 The PowerPC ABI defines this as an absolute branch to a
3620 fixed address which may be modified to an absolute branch
3621 to a symbol. The PowerOpen ABI does not define this
3622 relocation type.
3624 R_RBRC:
3625 The PowerPC ABI defines this as an absolute branch to a
3626 fixed address which may be modified to a relative branch.
3627 The PowerOpen ABI does not define this relocation type.
3629 R_TLS:
3630 Thread-local storage relocation using general-dynamic
3631 model.
3633 R_TLS_IE:
3634 Thread-local storage relocation using initial-exec model.
3636 R_TLS_LD:
3637 Thread-local storage relocation using local-dynamic model.
3639 R_TLS_LE:
3640 Thread-local storage relocation using local-exec model.
3642 R_TLSM:
3643 Tread-local storage relocation used by the loader.
3645 R_TLSML:
3646 Tread-local storage relocation used by the loader.
3648 R_TOCU:
3649 Upper TOC relative relocation. The value is the
3650 high-order 16 bit of a TOC relative relocation.
3652 R_TOCL:
3653 Lower TOC relative relocation. The value is the
3654 low-order 16 bit of a TOC relative relocation.
3655 */
3657 bool
3666 {
3673 {
3677 bfd_vma addend;
3678 bfd_vma val;
3680 bfd_vma relocation;
3681 bfd_vma value_to_relocate;
3682 bfd_vma address;
3685 /* Relocation type R_REF is a special relocation type which is
3686 merely used to prevent garbage collection from occurring for
3687 the csect including the symbol which it references. */
3691 /* Retrieve default value in HOWTO table and fix up according
3692 to r_size field, if it can be different.
3693 This should be made during relocation reading but the algorithms
3694 are expecting constant howtos. */
3697 {
3699 {
3708 {
3712 _bfd_error_handler
3716 }
3717 }
3718 }
3721 ? complain_overflow_signed
3724 /* symbol */
3732 {
3740 {
3742 /* Hack to make sure we use the right TOC anchor value
3743 if this reloc is against the TOC anchor. */
3747 else
3752 }
3753 else
3754 {
3766 {
3771 }
3773 {
3778 }
3779 else
3780 {
3786 }
3787 }
3788 }
3796 /* address */
3803 /* Get the value we are going to relocate. */
3806 else
3809 /* overflow.
3811 FIXME: We may drop bits during the addition
3812 which we don't check for. We must either check at every single
3813 operation, which would be tedious, or we must do the computations
3814 in a type larger than bfd_vma, which would be inefficient. */
3818 {
3824 {
3826 }
3828 {
3830 }
3831 else
3832 {
3836 }
3843 }
3845 /* Add RELOCATION to the right bits of VALUE_TO_RELOCATE. */
3850 /* Put the value back in the object file. */
3853 else
3855 }
3858 }
3860 /* gcc-8 warns (*) on all the strncpy calls in this function about
3861 possible string truncation. The "truncation" is not a bug. We
3862 have an external representation of structs with fields that are not
3863 necessarily NULL terminated and corresponding internal
3864 representation fields that are one larger so that they can always
3865 be NULL terminated.
3866 gcc versions between 4.2 and 4.6 do not allow pragma control of
3867 diagnostics inside functions, giving a hard error if you try to use
3868 the finer control available with later versions.
3869 gcc prior to 4.2 warns about diagnostic push and pop.
3870 gcc-5, gcc-6 and gcc-7 warn that -Wstringop-truncation is unknown,
3871 unless you also add #pragma GCC diagnostic ignored "-Wpragma".
3872 (*) Depending on your system header files! */
3873 #if GCC_VERSION >= 8000
3874 # pragma GCC diagnostic push
3876 #endif
3877 static bool
3882 {
3888 else
3889 {
3891 {
3892 bfd_size_type newalc;
3903 {
3906 }
3909 }
3917 }
3920 }
3922 static bool
3927 {
3929 {
3931 }
3932 else
3933 {
3935 bfd_size_type indx;
3943 }
3945 }
3946 #if GCC_VERSION >= 8000
3947 # pragma GCC diagnostic pop
3948 #endif
3954 {
3957 /* .sv64 = x_smclas == 17
3958 This is an invalid csect for 32 bit apps. */
3960 {
3964 };
3968 {
3969 return_value = bfd_make_section_anyway
3971 }
3972 else
3973 {
3974 _bfd_error_handler
3975 /* xgettext: c-format */
3979 }
3982 }
3984 static bool
3986 {
3991 }
3993 static bool
3995 {
4000 }
4002 static bfd_vma
4005 {
4007 }
4009 static bfd_vma
4011 {
4013 }
4015 static bool
4018 {
4024 bfd_size_type data_buffer_size;
4026 bfd_size_type string_table_size;
4027 bfd_vma val;
4045 /* file header */
4056 /* section header */
4070 /* .data
4071 0x0000 0x00000000 : rtl
4072 0x0004 0x00000010 : offset to init, or 0
4073 0x0008 0x00000028 : offset to fini, or 0
4074 0x000C 0x0000000C : size of descriptor
4075 0x0010 0x00000000 : init, needs a reloc
4076 0x0014 0x00000040 : offset to init name
4077 0x0018 0x00000000 : flags, padded to a word
4078 0x001C 0x00000000 : empty init
4079 0x0020 0x00000000 :
4080 0x0024 0x00000000 :
4081 0x0028 0x00000000 : fini, needs a reloc
4082 0x002C 0x00000??? : offset to fini name
4083 0x0030 0x00000000 : flags, padded to a word
4084 0x0034 0x00000000 : empty fini
4085 0x0038 0x00000000 :
4086 0x003C 0x00000000 :
4087 0x0040 init name
4088 0x0040 + initsz fini name */
4098 {
4104 }
4107 {
4113 }
4120 /* string table */
4127 {
4136 }
4138 /* symbols
4139 0. .data csect
4140 2. __rtinit
4141 4. init function
4142 6. fini function
4143 8. __rtld */
4147 /* .data csect */
4164 /* __rtinit */
4180 /* init */
4182 {
4187 {
4191 }
4192 else
4203 /* reloc */
4213 }
4215 /* fini */
4217 {
4222 {
4226 }
4227 else
4238 /* reloc */
4249 }
4252 {
4264 /* reloc */
4275 }
4293 }
4311 /* Indirect call stub
4312 The first word of the code must be modified by filling in
4313 the correct TOC offset. */
4316 {
4321 };
4323 /* Shared call stub
4324 The first word of the code must be modified by filling in
4325 the correct TOC offset.
4326 This is exactly as the glink code but without the traceback,
4327 as it won't be an independent function. */
4330 {
4337 };
4339 /* glink
4341 The first word of global linkage code must be modified by filling in
4342 the correct TOC offset. */
4345 {
4355 };
4357 /* Table to convert DWARF flags to section names.
4358 Remember to update binutils/dwarf.c:debug_displays
4359 if new DWARF sections are supported by XCOFF. */
4373 };
4375 /* For generic entry points. */
4376 #define _bfd_xcoff_close_and_cleanup _bfd_archive_close_and_cleanup
4377 #define _bfd_xcoff_bfd_free_cached_info _bfd_bool_bfd_true
4378 #define _bfd_xcoff_new_section_hook coff_new_section_hook
4379 #define _bfd_xcoff_get_section_contents _bfd_generic_get_section_contents
4380 #define _bfd_xcoff_get_section_contents_in_window \
4381 _bfd_generic_get_section_contents_in_window
4383 /* For copy private data entry points. */
4384 #define _bfd_xcoff_bfd_copy_private_bfd_data \
4385 _bfd_xcoff_copy_private_bfd_data
4386 #define _bfd_xcoff_bfd_merge_private_bfd_data \
4387 _bfd_generic_bfd_merge_private_bfd_data
4388 #define _bfd_xcoff_bfd_copy_private_section_data \
4389 _bfd_generic_bfd_copy_private_section_data
4390 #define _bfd_xcoff_bfd_copy_private_symbol_data \
4391 _bfd_generic_bfd_copy_private_symbol_data
4392 #define _bfd_xcoff_bfd_copy_private_header_data \
4393 _bfd_generic_bfd_copy_private_header_data
4394 #define _bfd_xcoff_bfd_set_private_flags \
4395 _bfd_generic_bfd_set_private_flags
4396 #define _bfd_xcoff_bfd_print_private_bfd_data \
4397 _bfd_generic_bfd_print_private_bfd_data
4399 /* For archive entry points. */
4400 #define _bfd_xcoff_slurp_extended_name_table \
4401 _bfd_noarchive_slurp_extended_name_table
4402 #define _bfd_xcoff_construct_extended_name_table \
4403 _bfd_noarchive_construct_extended_name_table
4404 #define _bfd_xcoff_truncate_arname bfd_dont_truncate_arname
4405 #define _bfd_xcoff_write_ar_hdr _bfd_generic_write_ar_hdr
4406 #define _bfd_xcoff_get_elt_at_index _bfd_generic_get_elt_at_index
4407 #define _bfd_xcoff_generic_stat_arch_elt _bfd_xcoff_stat_arch_elt
4408 #define _bfd_xcoff_update_armap_timestamp _bfd_bool_bfd_true
4410 /* For symbols entry points. */
4411 #define _bfd_xcoff_get_symtab_upper_bound coff_get_symtab_upper_bound
4412 #define _bfd_xcoff_canonicalize_symtab coff_canonicalize_symtab
4413 #define _bfd_xcoff_make_empty_symbol coff_make_empty_symbol
4414 #define _bfd_xcoff_print_symbol coff_print_symbol
4415 #define _bfd_xcoff_get_symbol_info coff_get_symbol_info
4416 #define _bfd_xcoff_get_symbol_version_string \
4417 _bfd_nosymbols_get_symbol_version_string
4418 #define _bfd_xcoff_bfd_is_local_label_name _bfd_xcoff_is_local_label_name
4419 #define _bfd_xcoff_bfd_is_target_special_symbol \
4420 coff_bfd_is_target_special_symbol
4421 #define _bfd_xcoff_get_lineno coff_get_lineno
4422 #define _bfd_xcoff_find_nearest_line coff_find_nearest_line
4423 #define _bfd_xcoff_find_line coff_find_line
4424 #define _bfd_xcoff_find_inliner_info coff_find_inliner_info
4425 #define _bfd_xcoff_bfd_make_debug_symbol coff_bfd_make_debug_symbol
4426 #define _bfd_xcoff_read_minisymbols _bfd_generic_read_minisymbols
4427 #define _bfd_xcoff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
4429 /* For reloc entry points. */
4430 #define _bfd_xcoff_get_reloc_upper_bound coff_get_reloc_upper_bound
4431 #define _bfd_xcoff_canonicalize_reloc coff_canonicalize_reloc
4432 #define _bfd_xcoff_set_reloc _bfd_generic_set_reloc
4433 #define _bfd_xcoff_bfd_reloc_type_lookup _bfd_xcoff_reloc_type_lookup
4434 #define _bfd_xcoff_bfd_reloc_name_lookup _bfd_xcoff_reloc_name_lookup
4436 /* For link entry points. */
4437 #define _bfd_xcoff_bfd_get_relocated_section_contents \
4438 bfd_generic_get_relocated_section_contents
4439 #define _bfd_xcoff_bfd_relax_section bfd_generic_relax_section
4440 #define _bfd_xcoff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
4441 #define _bfd_xcoff_bfd_link_just_syms _bfd_generic_link_just_syms
4442 #define _bfd_xcoff_bfd_copy_link_hash_symbol_type \
4443 _bfd_generic_copy_link_hash_symbol_type
4444 #define _bfd_xcoff_bfd_link_split_section _bfd_generic_link_split_section
4445 #define _bfd_xcoff_bfd_gc_sections bfd_generic_gc_sections
4446 #define _bfd_xcoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
4447 #define _bfd_xcoff_bfd_merge_sections bfd_generic_merge_sections
4448 #define _bfd_xcoff_bfd_is_group_section bfd_generic_is_group_section
4449 #define _bfd_xcoff_bfd_group_name bfd_generic_group_name
4450 #define _bfd_xcoff_bfd_discard_group bfd_generic_discard_group
4451 #define _bfd_xcoff_section_already_linked _bfd_generic_section_already_linked
4452 #define _bfd_xcoff_bfd_define_common_symbol _bfd_xcoff_define_common_symbol
4453 #define _bfd_xcoff_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
4454 #define _bfd_xcoff_bfd_define_start_stop bfd_generic_define_start_stop
4455 #define _bfd_xcoff_bfd_link_check_relocs _bfd_generic_link_check_relocs
4457 /* For dynamic symbols and relocs entry points. */
4458 #define _bfd_xcoff_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab
4461 {
4463 _bfd_xcoff_swap_aux_in,
4464 _bfd_xcoff_swap_sym_in,
4465 coff_swap_lineno_in,
4466 _bfd_xcoff_swap_aux_out,
4467 _bfd_xcoff_swap_sym_out,
4468 coff_swap_lineno_out,
4469 xcoff_swap_reloc_out,
4470 coff_swap_filehdr_out,
4471 coff_swap_aouthdr_out,
4472 coff_swap_scnhdr_out,
4473 FILHSZ,
4474 AOUTSZ,
4475 SCNHSZ,
4476 SYMESZ,
4477 AUXESZ,
4478 RELSZ,
4479 LINESZ,
4480 FILNMLEN,
4487 coff_swap_filehdr_in,
4488 coff_swap_aouthdr_in,
4489 coff_swap_scnhdr_in,
4490 xcoff_swap_reloc_in,
4491 coff_bad_format_hook,
4492 coff_set_arch_mach_hook,
4493 coff_mkobject_hook,
4494 styp_to_sec_flags,
4495 coff_set_alignment_hook,
4496 coff_slurp_symbol_table,
4497 symname_in_debug_hook,
4498 coff_pointerize_aux_hook,
4499 coff_print_aux,
4500 dummy_reloc16_extra_cases,
4501 dummy_reloc16_estimate,
4503 coff_compute_section_file_positions,
4505 xcoff_ppc_relocate_section,
4506 coff_rtype_to_howto,
4508 _bfd_generic_link_add_one_symbol,
4509 coff_link_output_has_begun,
4510 coff_final_link_postscript,
4511 NULL /* print_pdata. */
4512 },
4515 bfd_arch_rs6000,
4516 bfd_mach_rs6k,
4518 /* Function pointers to xcoff specific swap routines. */
4519 xcoff_swap_ldhdr_in,
4520 xcoff_swap_ldhdr_out,
4521 xcoff_swap_ldsym_in,
4522 xcoff_swap_ldsym_out,
4523 xcoff_swap_ldrel_in,
4524 xcoff_swap_ldrel_out,
4526 /* Sizes. */
4527 LDHDRSZ,
4528 LDSYMSZ,
4529 LDRELSZ,
4531 SMALL_AOUTSZ,
4533 /* Versions. */
4536 _bfd_xcoff_put_symbol_name,
4537 _bfd_xcoff_put_ldsymbol_name,
4539 xcoff_create_csect_from_smclas,
4541 /* Lineno and reloc count overflow. */
4542 xcoff_is_lineno_count_overflow,
4543 xcoff_is_reloc_count_overflow,
4545 xcoff_loader_symbol_offset,
4546 xcoff_loader_reloc_offset,
4548 /* glink. */
4552 /* rtinit */
4554 xcoff_generate_rtinit,
4556 /* Stub indirect call. */
4560 /* Stub shared call. */
4563 };
4565 /* The transfer vector that leads the outside world to all of the above. */
4567 {
4569 bfd_target_xcoff_flavour,
4583 /* data */
4584 bfd_getb64,
4585 bfd_getb_signed_64,
4586 bfd_putb64,
4587 bfd_getb32,
4588 bfd_getb_signed_32,
4589 bfd_putb32,
4590 bfd_getb16,
4591 bfd_getb_signed_16,
4592 bfd_putb16,
4594 /* hdrs */
4595 bfd_getb64,
4596 bfd_getb_signed_64,
4597 bfd_putb64,
4598 bfd_getb32,
4599 bfd_getb_signed_32,
4600 bfd_putb32,
4601 bfd_getb16,
4602 bfd_getb_signed_16,
4603 bfd_putb16,
4606 _bfd_dummy_target,
4607 coff_object_p,
4608 _bfd_xcoff_archive_p,
4609 CORE_FILE_P
4610 },
4613 _bfd_bool_bfd_false_error,
4614 coff_mkobject,
4615 _bfd_generic_mkarchive,
4616 _bfd_bool_bfd_false_error
4617 },
4620 _bfd_bool_bfd_false_error,
4621 coff_write_object_contents,
4622 _bfd_xcoff_write_archive_contents,
4623 _bfd_bool_bfd_false_error
4624 },
4636 /* Opposite endian version, none exists */
4637 NULL,
4640 };
4642 /* xcoff-powermac target
4643 Old target.
4644 Only difference between this target and the rs6000 target is the
4645 the default architecture and machine type used in coffcode.h
4647 PowerPC Macs use the same magic numbers as RS/6000
4648 (because that's how they were bootstrapped originally),
4649 but they are always PowerPC architecture. */
4651 {
4653 _bfd_xcoff_swap_aux_in,
4654 _bfd_xcoff_swap_sym_in,
4655 coff_swap_lineno_in,
4656 _bfd_xcoff_swap_aux_out,
4657 _bfd_xcoff_swap_sym_out,
4658 coff_swap_lineno_out,
4659 xcoff_swap_reloc_out,
4660 coff_swap_filehdr_out,
4661 coff_swap_aouthdr_out,
4662 coff_swap_scnhdr_out,
4663 FILHSZ,
4664 AOUTSZ,
4665 SCNHSZ,
4666 SYMESZ,
4667 AUXESZ,
4668 RELSZ,
4669 LINESZ,
4670 FILNMLEN,
4677 coff_swap_filehdr_in,
4678 coff_swap_aouthdr_in,
4679 coff_swap_scnhdr_in,
4680 xcoff_swap_reloc_in,
4681 coff_bad_format_hook,
4682 coff_set_arch_mach_hook,
4683 coff_mkobject_hook,
4684 styp_to_sec_flags,
4685 coff_set_alignment_hook,
4686 coff_slurp_symbol_table,
4687 symname_in_debug_hook,
4688 coff_pointerize_aux_hook,
4689 coff_print_aux,
4690 dummy_reloc16_extra_cases,
4691 dummy_reloc16_estimate,
4693 coff_compute_section_file_positions,
4695 xcoff_ppc_relocate_section,
4696 coff_rtype_to_howto,
4698 _bfd_generic_link_add_one_symbol,
4699 coff_link_output_has_begun,
4700 coff_final_link_postscript,
4701 NULL /* print_pdata. */
4702 },
4705 bfd_arch_powerpc,
4706 bfd_mach_ppc,
4708 /* Function pointers to xcoff specific swap routines. */
4709 xcoff_swap_ldhdr_in,
4710 xcoff_swap_ldhdr_out,
4711 xcoff_swap_ldsym_in,
4712 xcoff_swap_ldsym_out,
4713 xcoff_swap_ldrel_in,
4714 xcoff_swap_ldrel_out,
4716 /* Sizes. */
4717 LDHDRSZ,
4718 LDSYMSZ,
4719 LDRELSZ,
4721 SMALL_AOUTSZ,
4723 /* Versions. */
4726 _bfd_xcoff_put_symbol_name,
4727 _bfd_xcoff_put_ldsymbol_name,
4729 xcoff_create_csect_from_smclas,
4731 /* Lineno and reloc count overflow. */
4732 xcoff_is_lineno_count_overflow,
4733 xcoff_is_reloc_count_overflow,
4735 xcoff_loader_symbol_offset,
4736 xcoff_loader_reloc_offset,
4738 /* glink. */
4742 /* rtinit */
4744 xcoff_generate_rtinit,
4746 /* Stub indirect call. */
4750 /* Stub shared call. */
4753 };
4755 /* The transfer vector that leads the outside world to all of the above. */
4757 {
4759 bfd_target_xcoff_flavour,
4773 /* data */
4774 bfd_getb64,
4775 bfd_getb_signed_64,
4776 bfd_putb64,
4777 bfd_getb32,
4778 bfd_getb_signed_32,
4779 bfd_putb32,
4780 bfd_getb16,
4781 bfd_getb_signed_16,
4782 bfd_putb16,
4784 /* hdrs */
4785 bfd_getb64,
4786 bfd_getb_signed_64,
4787 bfd_putb64,
4788 bfd_getb32,
4789 bfd_getb_signed_32,
4790 bfd_putb32,
4791 bfd_getb16,
4792 bfd_getb_signed_16,
4793 bfd_putb16,
4796 _bfd_dummy_target,
4797 coff_object_p,
4798 _bfd_xcoff_archive_p,
4799 CORE_FILE_P
4800 },
4803 _bfd_bool_bfd_false_error,
4804 coff_mkobject,
4805 _bfd_generic_mkarchive,
4806 _bfd_bool_bfd_false_error
4807 },
4810 _bfd_bool_bfd_false_error,
4811 coff_write_object_contents,
4812 _bfd_xcoff_write_archive_contents,
4813 _bfd_bool_bfd_false_error
4814 },
4826 /* Opposite endian version, none exists */
4827 NULL,
4830 };