| blob | 6c4e32c9f0ddae4945441a1229aa476394ea272b |
1 /* BFD back-end for IBM RS/6000 "XCOFF" files.
2 Copyright (C) 1990-2023 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,
1718 or into the header. */
1722 {
1725 }
1730 {
1733 }
1734 }
1735 else
1736 {
1738 {
1742 }
1743 else
1744 {
1751 }
1753 /* Sanity check that we aren't pointing into the previous element
1754 or into the header. */
1758 {
1761 }
1766 {
1769 }
1770 }
1773 }
1775 /* Stat an element in an XCOFF archive. */
1777 int
1779 {
1781 {
1784 }
1787 {
1795 }
1796 else
1797 {
1805 }
1808 }
1810 /* Normalize a file name for inclusion in an archive. */
1814 {
1821 filename++;
1822 else
1825 }
1827 /* Write out an XCOFF armap. */
1829 static bool
1832 {
1849 /* We need spaces, not null bytes, in the header. */
1855 != SIZEOF_AR_HDR
1868 {
1873 }
1876 {
1884 }
1887 {
1893 }
1896 }
1903 #define PRINT20(d, v) \
1904 sprintf (buff20, FMT20, (uint64_t) (v)), \
1905 memcpy ((void *) (d), buff20, 20)
1907 #define PRINT12(d, v) \
1908 sprintf (buff20, FMT12, (int)(v)), \
1909 memcpy ((void *) (d), buff20, 12)
1911 #define PRINT12_OCTAL(d, v) \
1912 sprintf (buff20, FMT12_OCTAL, (unsigned int)(v)), \
1913 memcpy ((void *) (d), buff20, 12)
1915 #define PRINT4(d, v) \
1916 sprintf (buff20, FMT4, (int)(v)), \
1917 memcpy ((void *) (d), buff20, 4)
1919 #define READ20(d, v) \
1920 buff20[20] = 0, \
1921 memcpy (buff20, (d), 20), \
1922 (v) = bfd_scan_vma (buff20, (const char **) NULL, 10)
1924 static bool
1926 {
1929 /* Limit pad to <= 4096. */
1938 }
1940 static bool
1942 {
1943 bfd_size_type remaining;
1952 {
1958 }
1961 {
1965 }
1968 }
1970 static bool
1973 {
1982 /* First, we look through the symbols and work out which are
1983 from 32-bit objects and which from 64-bit ones. */
1990 {
1993 {
1996 {
1997 sym_64++;
1999 }
2000 else
2001 {
2002 sym_32++;
2004 }
2005 i++;
2006 }
2007 }
2009 /* A quick sanity check... */
2011 /* Explicit cast to int for compiler. */
2016 /* xcoff_write_archive_contents_big passes nextoff in symoff. */
2022 /* Write out the symbol table.
2023 Layout :
2025 standard big archive header
2026 0x0000 ar_size [0x14]
2027 0x0014 ar_nxtmem [0x14]
2028 0x0028 ar_prvmem [0x14]
2029 0x003C ar_date [0x0C]
2030 0x0048 ar_uid [0x0C]
2031 0x0054 ar_gid [0x0C]
2032 0x0060 ar_mod [0x0C]
2033 0x006C ar_namelen[0x04]
2034 0x0070 ar_fmag [SXCOFFARFMAG]
2036 Symbol table
2037 0x0072 num_syms [0x08], binary
2038 0x0078 offsets [0x08 * num_syms], binary
2039 0x0086 + 0x08 * num_syms names [??]
2040 ?? pad to even bytes.
2041 */
2044 {
2049 bfd_vma symbol_table_size =
2050 SIZEOF_AR_HDR_BIG
2051 + SXCOFFARFMAG
2066 else
2083 /* loop over the 32 bit offsets */
2087 {
2090 {
2092 {
2095 }
2096 i++;
2097 }
2098 }
2100 /* loop over the 32 bit symbol names */
2105 {
2108 {
2110 {
2113 }
2114 i++;
2115 }
2116 }
2124 }
2125 else
2129 {
2134 bfd_vma symbol_table_size =
2135 SIZEOF_AR_HDR_BIG
2136 + SXCOFFARFMAG
2163 /* loop over the 64 bit offsets */
2167 {
2170 {
2172 {
2175 }
2176 i++;
2177 }
2178 }
2180 /* loop over the 64 bit symbol names */
2185 {
2188 {
2190 {
2193 }
2194 i++;
2195 }
2196 }
2203 }
2204 else
2208 }
2210 bool
2213 {
2216 else
2218 }
2220 /* Write out an XCOFF archive. We always write an entire archive,
2221 rather than fussing with the freelist and so forth. */
2223 static bool
2225 {
2228 bfd_size_type count;
2229 bfd_size_type total_namlen;
2237 bfd_size_type size;
2249 {
2253 {
2257 }
2259 {
2264 {
2265 /* Assume we just "made" the member, and fake it. */
2273 }
2275 {
2278 }
2281 {
2286 }
2300 }
2301 }
2314 i++)
2315 {
2316 bfd_size_type namlen;
2320 {
2323 }
2330 /* We need spaces, not null bytes, in the header. */
2350 }
2354 /* Write out the member table. */
2371 size = (SIZEOF_AR_HDR
2372 + XCOFFARMAG_ELEMENT_SIZE
2374 + total_namlen
2382 else
2385 /* We need spaces, not null bytes, in the header. */
2401 {
2406 }
2408 {
2410 bfd_size_type namlen;
2416 }
2421 /* Write out the armap, if appropriate. */
2424 else
2425 {
2431 }
2433 /* Write out the archive file header. */
2435 /* We need spaces, not null bytes, in the header. */
2446 }
2448 static bool
2450 {
2452 bfd_size_type count;
2453 bfd_size_type total_namlen;
2461 bfd_size_type size;
2463 bfd_vma member_table_size;
2472 /* Calculate count and total_namlen. */
2478 {
2482 && ! hasobjects
2487 {
2492 }
2495 {
2500 {
2501 /* Assume we just "made" the member, and fake it. */
2509 }
2511 {
2514 }
2517 {
2522 }
2536 }
2537 }
2541 {
2545 }
2550 i++)
2551 {
2552 bfd_size_type namlen;
2561 {
2564 }
2574 {
2577 }
2581 }
2584 {
2587 }
2589 /* Write out the member table.
2590 Layout :
2592 standard big archive header
2593 0x0000 ar_size [0x14]
2594 0x0014 ar_nxtmem [0x14]
2595 0x0028 ar_prvmem [0x14]
2596 0x003C ar_date [0x0C]
2597 0x0048 ar_uid [0x0C]
2598 0x0054 ar_gid [0x0C]
2599 0x0060 ar_mod [0x0C]
2600 0x006C ar_namelen[0x04]
2601 0x0070 ar_fmag [0x02]
2603 Member table
2604 0x0072 count [0x14]
2605 0x0086 offsets [0x14 * counts]
2606 0x0086 + 0x14 * counts names [??]
2607 ?? pad to even bytes.
2608 */
2613 member_table_size = (SIZEOF_AR_HDR_BIG
2614 + SXCOFFARFMAG
2615 + XCOFFARMAGBIG_ELEMENT_SIZE
2622 {
2625 }
2634 else
2650 {
2653 }
2656 {
2659 }
2664 {
2671 }
2683 /* Write out the armap, if appropriate. */
2687 else
2688 {
2691 /* Save nextoff in fhdr.symoff so the armap routine can use it. */
2697 }
2699 /* Write out the archive file header. */
2707 }
2709 bool
2711 {
2714 else
2716 }
2717 \f
2718 /* We can't use the usual coff_sizeof_headers routine, because AIX
2719 always uses an a.out header. */
2721 int
2724 {
2730 else
2735 {
2736 /* There can be additional sections just for dealing with overflow in
2737 reloc and lineno counts. But the numbers of relocs and lineno aren't
2738 known when bfd_sizeof_headers is called, so we compute them by
2739 summing the numbers from input sections. */
2740 struct nbr_reloc_lineno
2741 {
2744 };
2750 /* Although the number of sections is known, the maximum value of
2751 section->index isn't (because some sections may have been removed).
2752 Don't try to renumber sections, just compute the upper bound. */
2758 /* Allocate the per section counters. It could be possible to use a
2759 preallocated array as the number of sections is limited on XCOFF,
2760 but this creates a maintainance issue. */
2765 /* Sum. */
2770 {
2774 }
2776 /* Add the size of a section for each section with an overflow. */
2778 {
2784 }
2787 }
2790 }
2791 \f
2792 /* Routines to swap information in the XCOFF .loader section. If we
2793 ever need to write an XCOFF loader, this stuff will need to be
2794 moved to another file shared by the linker (which XCOFF calls the
2795 ``binder'') and the loader. */
2797 /* Swap in the ldhdr structure. */
2799 static void
2801 {
2812 }
2814 /* Swap out the ldhdr structure. */
2816 static void
2818 {
2829 }
2831 /* Swap in the ldsym structure. */
2833 static void
2835 {
2843 }
2850 }
2852 /* Swap out the ldsym structure. */
2854 static void
2856 {
2861 else
2862 {
2866 }
2873 }
2875 static void
2877 {
2887 }
2889 static unsigned int
2891 {
2901 }
2903 /* Swap in the ldrel structure. */
2905 static void
2907 {
2914 }
2916 /* Swap out the ldrel structure. */
2918 static void
2920 {
2927 }
2928 \f
2930 bool
2937 bfd_vma val ATTRIBUTE_UNUSED,
2938 bfd_vma addend ATTRIBUTE_UNUSED,
2942 {
2944 }
2946 bool
2953 bfd_vma val ATTRIBUTE_UNUSED,
2954 bfd_vma addend ATTRIBUTE_UNUSED,
2958 {
2959 _bfd_error_handler
2960 /* xgettext: c-format */
2965 }
2967 bool
2974 bfd_vma val,
2975 bfd_vma addend,
2979 {
2982 }
2984 bool
2991 bfd_vma val,
2992 bfd_vma addend,
2996 {
2999 }
3001 bool
3008 bfd_vma val,
3009 bfd_vma addend,
3013 {
3016 /* A PC relative reloc includes the section address. */
3023 }
3025 bool
3032 bfd_vma val,
3033 bfd_vma addend ATTRIBUTE_UNUSED,
3037 {
3046 {
3048 {
3049 _bfd_error_handler
3050 /* xgettext: c-format */
3055 }
3060 }
3062 /* We can't use the preexisting value written down by the
3063 assembly, as R_TOCU needs to be adjusted when the final
3064 R_TOCL value is signed. */
3073 }
3075 bool
3082 bfd_vma val,
3083 bfd_vma addend,
3087 {
3094 }
3096 static bool
3103 bfd_vma val,
3104 bfd_vma addend,
3108 {
3110 bfd_vma section_offset;
3120 /* If we see an R_BR or R_RBR reloc which is jumping to global
3121 linkage code, and it is followed by an appropriate cror nop
3122 instruction, we replace the cror with lwz r2,20(r1). This
3123 restores the TOC after the glink code. Contrariwise, if the
3124 call is followed by a lwz r2,20(r1), but the call is not
3125 going to global linkage code, we can replace the load with a
3126 cror. */
3131 {
3138 /* The _ptrgl function is magic. It is used by the AIX
3139 compiler to call a function through a pointer. */
3141 {
3147 }
3148 else
3149 {
3152 }
3153 }
3155 {
3156 /* Normally, this relocation is against a defined symbol. In the
3157 case where this is a partial link and the output section offset
3158 is greater than 2^25, the linker will return an invalid error
3159 message that the relocation has been truncated. Yes it has been
3160 truncated but no it not important. For this case, disable the
3161 overflow checking. */
3164 }
3166 /* Check if a stub is needed. */
3169 {
3174 {
3179 }
3185 }
3187 /* The original PC-relative relocation is biased by -r_vaddr, so adding
3188 the value below will give the absolute target address. */
3199 {
3201 bfd_vma insn;
3203 /* Turn the relative branch into an absolute one by setting the
3204 AA bit. */
3210 /* Make the howto absolute too. */
3213 }
3214 else
3215 {
3216 /* Use a PC-relative howto and subtract the instruction's address
3217 from the target address we calculated above. */
3222 }
3224 }
3226 bool
3233 bfd_vma val ATTRIBUTE_UNUSED,
3234 bfd_vma addend,
3238 {
3243 /* A PC relative reloc includes the section address. */
3250 }
3252 bool
3259 bfd_vma val,
3260 bfd_vma addend,
3264 {
3272 /* R_TLSML is handled by the loader but must be from a
3273 TOC entry targeting itslef. This is already verified in
3274 xcoff_link_add_symbols.
3275 The value must be 0. */
3277 {
3280 }
3282 /* The target symbol should always be available even if it's not
3283 exported. */
3286 /* TLS relocations must target a TLS symbol. */
3288 {
3289 _bfd_error_handler
3293 }
3295 /* Local TLS relocations must target a local symbol, ie
3296 non-imported. */
3301 {
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 _bfd_error_handler
3712 }
3713 }
3716 ? complain_overflow_signed
3719 /* symbol */
3727 {
3735 {
3737 /* Hack to make sure we use the right TOC anchor value
3738 if this reloc is against the TOC anchor. */
3742 else
3747 }
3748 else
3749 {
3761 {
3766 }
3768 {
3773 }
3774 else
3775 {
3781 }
3782 }
3783 }
3791 /* address */
3798 /* Get the value we are going to relocate. */
3801 else
3804 /* overflow.
3806 FIXME: We may drop bits during the addition
3807 which we don't check for. We must either check at every single
3808 operation, which would be tedious, or we must do the computations
3809 in a type larger than bfd_vma, which would be inefficient. */
3813 {
3819 {
3821 }
3823 {
3825 }
3826 else
3827 {
3831 }
3838 }
3840 /* Add RELOCATION to the right bits of VALUE_TO_RELOCATE. */
3845 /* Put the value back in the object file. */
3848 else
3850 }
3853 }
3855 /* gcc-8 warns (*) on all the strncpy calls in this function about
3856 possible string truncation. The "truncation" is not a bug. We
3857 have an external representation of structs with fields that are not
3858 necessarily NULL terminated and corresponding internal
3859 representation fields that are one larger so that they can always
3860 be NULL terminated.
3861 gcc versions between 4.2 and 4.6 do not allow pragma control of
3862 diagnostics inside functions, giving a hard error if you try to use
3863 the finer control available with later versions.
3864 gcc prior to 4.2 warns about diagnostic push and pop.
3865 gcc-5, gcc-6 and gcc-7 warn that -Wstringop-truncation is unknown,
3866 unless you also add #pragma GCC diagnostic ignored "-Wpragma".
3867 (*) Depending on your system header files! */
3868 #if GCC_VERSION >= 8000
3869 # pragma GCC diagnostic push
3871 #endif
3872 static bool
3877 {
3883 else
3884 {
3886 {
3887 bfd_size_type newalc;
3898 {
3901 }
3904 }
3912 }
3915 }
3917 static bool
3922 {
3924 {
3926 }
3927 else
3928 {
3930 bfd_size_type indx;
3938 }
3940 }
3941 #if GCC_VERSION >= 8000
3942 # pragma GCC diagnostic pop
3943 #endif
3949 {
3952 /* .sv64 = x_smclas == 17
3953 This is an invalid csect for 32 bit apps. */
3955 {
3959 };
3963 {
3964 return_value = bfd_make_section_anyway
3966 }
3967 else
3968 {
3969 _bfd_error_handler
3970 /* xgettext: c-format */
3974 }
3977 }
3979 static bool
3981 {
3986 }
3988 static bool
3990 {
3995 }
3997 static bfd_vma
4000 {
4002 }
4004 static bfd_vma
4006 {
4008 }
4010 static bool
4013 {
4019 bfd_size_type data_buffer_size;
4021 bfd_size_type string_table_size;
4022 bfd_vma val;
4040 /* file header */
4051 /* section header */
4065 /* .data
4066 0x0000 0x00000000 : rtl
4067 0x0004 0x00000010 : offset to init, or 0
4068 0x0008 0x00000028 : offset to fini, or 0
4069 0x000C 0x0000000C : size of descriptor
4070 0x0010 0x00000000 : init, needs a reloc
4071 0x0014 0x00000040 : offset to init name
4072 0x0018 0x00000000 : flags, padded to a word
4073 0x001C 0x00000000 : empty init
4074 0x0020 0x00000000 :
4075 0x0024 0x00000000 :
4076 0x0028 0x00000000 : fini, needs a reloc
4077 0x002C 0x00000??? : offset to fini name
4078 0x0030 0x00000000 : flags, padded to a word
4079 0x0034 0x00000000 : empty fini
4080 0x0038 0x00000000 :
4081 0x003C 0x00000000 :
4082 0x0040 init name
4083 0x0040 + initsz fini name */
4093 {
4099 }
4102 {
4108 }
4115 /* string table */
4122 {
4131 }
4133 /* symbols
4134 0. .data csect
4135 2. __rtinit
4136 4. init function
4137 6. fini function
4138 8. __rtld */
4142 /* .data csect */
4159 /* __rtinit */
4175 /* init */
4177 {
4182 {
4186 }
4187 else
4198 /* reloc */
4208 }
4210 /* fini */
4212 {
4217 {
4221 }
4222 else
4233 /* reloc */
4244 }
4247 {
4259 /* reloc */
4270 }
4288 }
4306 /* Indirect call stub
4307 The first word of the code must be modified by filling in
4308 the correct TOC offset. */
4311 {
4316 };
4318 /* Shared call stub
4319 The first word of the code must be modified by filling in
4320 the correct TOC offset.
4321 This is exactly as the glink code but without the traceback,
4322 as it won't be an independent function. */
4325 {
4332 };
4334 /* glink
4336 The first word of global linkage code must be modified by filling in
4337 the correct TOC offset. */
4340 {
4350 };
4352 /* Table to convert DWARF flags to section names.
4353 Remember to update binutils/dwarf.c:debug_displays
4354 if new DWARF sections are supported by XCOFF. */
4368 };
4370 /* For generic entry points. */
4371 #define _bfd_xcoff_close_and_cleanup _bfd_coff_close_and_cleanup
4372 #define _bfd_xcoff_bfd_free_cached_info _bfd_bool_bfd_true
4373 #define _bfd_xcoff_new_section_hook coff_new_section_hook
4374 #define _bfd_xcoff_get_section_contents _bfd_generic_get_section_contents
4375 #define _bfd_xcoff_get_section_contents_in_window \
4376 _bfd_generic_get_section_contents_in_window
4378 /* For copy private data entry points. */
4379 #define _bfd_xcoff_bfd_copy_private_bfd_data \
4380 _bfd_xcoff_copy_private_bfd_data
4381 #define _bfd_xcoff_bfd_merge_private_bfd_data \
4382 _bfd_generic_bfd_merge_private_bfd_data
4383 #define _bfd_xcoff_bfd_copy_private_section_data \
4384 _bfd_generic_bfd_copy_private_section_data
4385 #define _bfd_xcoff_bfd_copy_private_symbol_data \
4386 _bfd_generic_bfd_copy_private_symbol_data
4387 #define _bfd_xcoff_bfd_copy_private_header_data \
4388 _bfd_generic_bfd_copy_private_header_data
4389 #define _bfd_xcoff_bfd_set_private_flags \
4390 _bfd_generic_bfd_set_private_flags
4391 #define _bfd_xcoff_bfd_print_private_bfd_data \
4392 _bfd_generic_bfd_print_private_bfd_data
4394 /* For archive entry points. */
4395 #define _bfd_xcoff_slurp_extended_name_table \
4396 _bfd_noarchive_slurp_extended_name_table
4397 #define _bfd_xcoff_construct_extended_name_table \
4398 _bfd_noarchive_construct_extended_name_table
4399 #define _bfd_xcoff_truncate_arname bfd_dont_truncate_arname
4400 #define _bfd_xcoff_write_ar_hdr _bfd_generic_write_ar_hdr
4401 #define _bfd_xcoff_get_elt_at_index _bfd_generic_get_elt_at_index
4402 #define _bfd_xcoff_generic_stat_arch_elt _bfd_xcoff_stat_arch_elt
4403 #define _bfd_xcoff_update_armap_timestamp _bfd_bool_bfd_true
4405 /* For symbols entry points. */
4406 #define _bfd_xcoff_get_symtab_upper_bound coff_get_symtab_upper_bound
4407 #define _bfd_xcoff_canonicalize_symtab coff_canonicalize_symtab
4408 #define _bfd_xcoff_make_empty_symbol coff_make_empty_symbol
4409 #define _bfd_xcoff_print_symbol coff_print_symbol
4410 #define _bfd_xcoff_get_symbol_info coff_get_symbol_info
4411 #define _bfd_xcoff_get_symbol_version_string \
4412 _bfd_nosymbols_get_symbol_version_string
4413 #define _bfd_xcoff_bfd_is_local_label_name _bfd_xcoff_is_local_label_name
4414 #define _bfd_xcoff_bfd_is_target_special_symbol \
4415 coff_bfd_is_target_special_symbol
4416 #define _bfd_xcoff_get_lineno coff_get_lineno
4417 #define _bfd_xcoff_find_nearest_line coff_find_nearest_line
4418 #define _bfd_xcoff_find_nearest_line_with_alt \
4419 coff_find_nearest_line_with_alt
4420 #define _bfd_xcoff_find_line coff_find_line
4421 #define _bfd_xcoff_find_inliner_info coff_find_inliner_info
4422 #define _bfd_xcoff_bfd_make_debug_symbol coff_bfd_make_debug_symbol
4423 #define _bfd_xcoff_read_minisymbols _bfd_generic_read_minisymbols
4424 #define _bfd_xcoff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
4426 /* For reloc entry points. */
4427 #define _bfd_xcoff_get_reloc_upper_bound coff_get_reloc_upper_bound
4428 #define _bfd_xcoff_canonicalize_reloc coff_canonicalize_reloc
4429 #define _bfd_xcoff_set_reloc _bfd_generic_set_reloc
4430 #define _bfd_xcoff_bfd_reloc_type_lookup _bfd_xcoff_reloc_type_lookup
4431 #define _bfd_xcoff_bfd_reloc_name_lookup _bfd_xcoff_reloc_name_lookup
4433 /* For link entry points. */
4434 #define _bfd_xcoff_bfd_get_relocated_section_contents \
4435 bfd_generic_get_relocated_section_contents
4436 #define _bfd_xcoff_bfd_relax_section bfd_generic_relax_section
4437 #define _bfd_xcoff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
4438 #define _bfd_xcoff_bfd_link_just_syms _bfd_generic_link_just_syms
4439 #define _bfd_xcoff_bfd_copy_link_hash_symbol_type \
4440 _bfd_generic_copy_link_hash_symbol_type
4441 #define _bfd_xcoff_bfd_link_split_section _bfd_generic_link_split_section
4442 #define _bfd_xcoff_bfd_gc_sections bfd_generic_gc_sections
4443 #define _bfd_xcoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
4444 #define _bfd_xcoff_bfd_merge_sections bfd_generic_merge_sections
4445 #define _bfd_xcoff_bfd_is_group_section bfd_generic_is_group_section
4446 #define _bfd_xcoff_bfd_group_name bfd_generic_group_name
4447 #define _bfd_xcoff_bfd_discard_group bfd_generic_discard_group
4448 #define _bfd_xcoff_section_already_linked _bfd_generic_section_already_linked
4449 #define _bfd_xcoff_bfd_define_common_symbol _bfd_xcoff_define_common_symbol
4450 #define _bfd_xcoff_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
4451 #define _bfd_xcoff_bfd_define_start_stop bfd_generic_define_start_stop
4452 #define _bfd_xcoff_bfd_link_check_relocs _bfd_generic_link_check_relocs
4454 /* For dynamic symbols and relocs entry points. */
4455 #define _bfd_xcoff_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab
4458 {
4460 _bfd_xcoff_swap_aux_in,
4461 _bfd_xcoff_swap_sym_in,
4462 coff_swap_lineno_in,
4463 _bfd_xcoff_swap_aux_out,
4464 _bfd_xcoff_swap_sym_out,
4465 coff_swap_lineno_out,
4466 xcoff_swap_reloc_out,
4467 coff_swap_filehdr_out,
4468 coff_swap_aouthdr_out,
4469 coff_swap_scnhdr_out,
4470 FILHSZ,
4471 AOUTSZ,
4472 SCNHSZ,
4473 SYMESZ,
4474 AUXESZ,
4475 RELSZ,
4476 LINESZ,
4477 FILNMLEN,
4484 coff_swap_filehdr_in,
4485 coff_swap_aouthdr_in,
4486 coff_swap_scnhdr_in,
4487 xcoff_swap_reloc_in,
4488 coff_bad_format_hook,
4489 coff_set_arch_mach_hook,
4490 coff_mkobject_hook,
4491 styp_to_sec_flags,
4492 coff_set_alignment_hook,
4493 coff_slurp_symbol_table,
4494 symname_in_debug_hook,
4495 coff_pointerize_aux_hook,
4496 coff_print_aux,
4497 dummy_reloc16_extra_cases,
4498 dummy_reloc16_estimate,
4500 coff_compute_section_file_positions,
4502 xcoff_ppc_relocate_section,
4503 coff_rtype_to_howto,
4505 _bfd_generic_link_add_one_symbol,
4506 coff_link_output_has_begun,
4507 coff_final_link_postscript,
4508 NULL /* print_pdata. */
4509 },
4512 bfd_arch_rs6000,
4513 bfd_mach_rs6k,
4515 /* Function pointers to xcoff specific swap routines. */
4516 xcoff_swap_ldhdr_in,
4517 xcoff_swap_ldhdr_out,
4518 xcoff_swap_ldsym_in,
4519 xcoff_swap_ldsym_out,
4520 xcoff_swap_ldrel_in,
4521 xcoff_swap_ldrel_out,
4523 /* Sizes. */
4524 LDHDRSZ,
4525 LDSYMSZ,
4526 LDRELSZ,
4528 SMALL_AOUTSZ,
4530 /* Versions. */
4533 _bfd_xcoff_put_symbol_name,
4534 _bfd_xcoff_put_ldsymbol_name,
4536 xcoff_create_csect_from_smclas,
4538 /* Lineno and reloc count overflow. */
4539 xcoff_is_lineno_count_overflow,
4540 xcoff_is_reloc_count_overflow,
4542 xcoff_loader_symbol_offset,
4543 xcoff_loader_reloc_offset,
4545 /* glink. */
4549 /* rtinit */
4551 xcoff_generate_rtinit,
4553 /* Stub indirect call. */
4557 /* Stub shared call. */
4560 };
4562 /* The transfer vector that leads the outside world to all of the above. */
4564 {
4566 bfd_target_xcoff_flavour,
4580 /* data */
4581 bfd_getb64,
4582 bfd_getb_signed_64,
4583 bfd_putb64,
4584 bfd_getb32,
4585 bfd_getb_signed_32,
4586 bfd_putb32,
4587 bfd_getb16,
4588 bfd_getb_signed_16,
4589 bfd_putb16,
4591 /* hdrs */
4592 bfd_getb64,
4593 bfd_getb_signed_64,
4594 bfd_putb64,
4595 bfd_getb32,
4596 bfd_getb_signed_32,
4597 bfd_putb32,
4598 bfd_getb16,
4599 bfd_getb_signed_16,
4600 bfd_putb16,
4603 _bfd_dummy_target,
4604 coff_object_p,
4605 _bfd_xcoff_archive_p,
4606 CORE_FILE_P
4607 },
4610 _bfd_bool_bfd_false_error,
4611 coff_mkobject,
4612 _bfd_generic_mkarchive,
4613 _bfd_bool_bfd_false_error
4614 },
4617 _bfd_bool_bfd_false_error,
4618 coff_write_object_contents,
4619 _bfd_xcoff_write_archive_contents,
4620 _bfd_bool_bfd_false_error
4621 },
4633 /* Opposite endian version, none exists */
4634 NULL,
4637 };
4639 /* xcoff-powermac target
4640 Old target.
4641 Only difference between this target and the rs6000 target is the
4642 the default architecture and machine type used in coffcode.h
4644 PowerPC Macs use the same magic numbers as RS/6000
4645 (because that's how they were bootstrapped originally),
4646 but they are always PowerPC architecture. */
4648 {
4650 _bfd_xcoff_swap_aux_in,
4651 _bfd_xcoff_swap_sym_in,
4652 coff_swap_lineno_in,
4653 _bfd_xcoff_swap_aux_out,
4654 _bfd_xcoff_swap_sym_out,
4655 coff_swap_lineno_out,
4656 xcoff_swap_reloc_out,
4657 coff_swap_filehdr_out,
4658 coff_swap_aouthdr_out,
4659 coff_swap_scnhdr_out,
4660 FILHSZ,
4661 AOUTSZ,
4662 SCNHSZ,
4663 SYMESZ,
4664 AUXESZ,
4665 RELSZ,
4666 LINESZ,
4667 FILNMLEN,
4674 coff_swap_filehdr_in,
4675 coff_swap_aouthdr_in,
4676 coff_swap_scnhdr_in,
4677 xcoff_swap_reloc_in,
4678 coff_bad_format_hook,
4679 coff_set_arch_mach_hook,
4680 coff_mkobject_hook,
4681 styp_to_sec_flags,
4682 coff_set_alignment_hook,
4683 coff_slurp_symbol_table,
4684 symname_in_debug_hook,
4685 coff_pointerize_aux_hook,
4686 coff_print_aux,
4687 dummy_reloc16_extra_cases,
4688 dummy_reloc16_estimate,
4690 coff_compute_section_file_positions,
4692 xcoff_ppc_relocate_section,
4693 coff_rtype_to_howto,
4695 _bfd_generic_link_add_one_symbol,
4696 coff_link_output_has_begun,
4697 coff_final_link_postscript,
4698 NULL /* print_pdata. */
4699 },
4702 bfd_arch_powerpc,
4703 bfd_mach_ppc,
4705 /* Function pointers to xcoff specific swap routines. */
4706 xcoff_swap_ldhdr_in,
4707 xcoff_swap_ldhdr_out,
4708 xcoff_swap_ldsym_in,
4709 xcoff_swap_ldsym_out,
4710 xcoff_swap_ldrel_in,
4711 xcoff_swap_ldrel_out,
4713 /* Sizes. */
4714 LDHDRSZ,
4715 LDSYMSZ,
4716 LDRELSZ,
4718 SMALL_AOUTSZ,
4720 /* Versions. */
4723 _bfd_xcoff_put_symbol_name,
4724 _bfd_xcoff_put_ldsymbol_name,
4726 xcoff_create_csect_from_smclas,
4728 /* Lineno and reloc count overflow. */
4729 xcoff_is_lineno_count_overflow,
4730 xcoff_is_reloc_count_overflow,
4732 xcoff_loader_symbol_offset,
4733 xcoff_loader_reloc_offset,
4735 /* glink. */
4739 /* rtinit */
4741 xcoff_generate_rtinit,
4743 /* Stub indirect call. */
4747 /* Stub shared call. */
4750 };
4752 /* The transfer vector that leads the outside world to all of the above. */
4754 {
4756 bfd_target_xcoff_flavour,
4770 /* data */
4771 bfd_getb64,
4772 bfd_getb_signed_64,
4773 bfd_putb64,
4774 bfd_getb32,
4775 bfd_getb_signed_32,
4776 bfd_putb32,
4777 bfd_getb16,
4778 bfd_getb_signed_16,
4779 bfd_putb16,
4781 /* hdrs */
4782 bfd_getb64,
4783 bfd_getb_signed_64,
4784 bfd_putb64,
4785 bfd_getb32,
4786 bfd_getb_signed_32,
4787 bfd_putb32,
4788 bfd_getb16,
4789 bfd_getb_signed_16,
4790 bfd_putb16,
4793 _bfd_dummy_target,
4794 coff_object_p,
4795 _bfd_xcoff_archive_p,
4796 CORE_FILE_P
4797 },
4800 _bfd_bool_bfd_false_error,
4801 coff_mkobject,
4802 _bfd_generic_mkarchive,
4803 _bfd_bool_bfd_false_error
4804 },
4807 _bfd_bool_bfd_false_error,
4808 coff_write_object_contents,
4809 _bfd_xcoff_write_archive_contents,
4810 _bfd_bool_bfd_false_error
4811 },
4823 /* Opposite endian version, none exists */
4824 NULL,
4827 };