1 /* MMIX-specific support for 64-bit ELF.
2 Copyright (C) 2001-2014 Free Software Foundation, Inc.
3 Contributed by Hans-Peter Nilsson <hp@bitrange.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
23 /* No specific ABI or "processor-specific supplement" defined. */
26 - "Traditional" linker relaxation (shrinking whole sections).
27 - Merge reloc stubs jumping to same location.
28 - GETA stub relaxation (call a stub for out of range new
29 R_MMIX_GETA_STUBBABLE). */
36 #include "opcode/mmix.h"
38 #define MINUS_ONE (((bfd_vma) 0) - 1)
40 #define MAX_PUSHJ_STUB_SIZE (5 * 4)
42 /* Put these everywhere in new code. */
44 _bfd_abort (__FILE__, __LINE__, \
45 "Internal: Non-debugged code (test-case missing)")
48 _bfd_abort (__FILE__, __LINE__, \
51 struct _mmix_elf_section_data
53 struct bfd_elf_section_data elf;
56 struct bpo_reloc_section_info *reloc;
57 struct bpo_greg_section_info *greg;
60 struct pushj_stub_info
62 /* Maximum number of stubs needed for this section. */
63 bfd_size_type n_pushj_relocs;
65 /* Size of stubs after a mmix_elf_relax_section round. */
66 bfd_size_type stubs_size_sum;
68 /* Per-reloc stubs_size_sum information. The stubs_size_sum member is the sum
69 of these. Allocated in mmix_elf_check_common_relocs. */
70 bfd_size_type *stub_size;
72 /* Offset of next stub during relocation. Somewhat redundant with the
73 above: error coverage is easier and we don't have to reset the
74 stubs_size_sum for relocation. */
75 bfd_size_type stub_offset;
78 /* Whether there has been a warning that this section could not be
79 linked due to a specific cause. FIXME: a way to access the
80 linker info or output section, then stuff the limiter guard
82 bfd_boolean has_warned_bpo;
83 bfd_boolean has_warned_pushj;
86 #define mmix_elf_section_data(sec) \
87 ((struct _mmix_elf_section_data *) elf_section_data (sec))
89 /* For each section containing a base-plus-offset (BPO) reloc, we attach
90 this struct as mmix_elf_section_data (section)->bpo, which is otherwise
92 struct bpo_reloc_section_info
94 /* The base is 1; this is the first number in this section. */
95 size_t first_base_plus_offset_reloc;
97 /* Number of BPO-relocs in this section. */
98 size_t n_bpo_relocs_this_section;
100 /* Running index, used at relocation time. */
103 /* We don't have access to the bfd_link_info struct in
104 mmix_final_link_relocate. What we really want to get at is the
105 global single struct greg_relocation, so we stash it here. */
106 asection *bpo_greg_section;
109 /* Helper struct (in global context) for the one below.
110 There's one of these created for every BPO reloc. */
111 struct bpo_reloc_request
115 /* Valid after relaxation. The base is 0; the first register number
116 must be added. The offset is in range 0..255. */
120 /* The order number for this BPO reloc, corresponding to the order in
121 which BPO relocs were found. Used to create an index after reloc
122 requests are sorted. */
125 /* Set when the value is computed. Better than coding "guard values"
126 into the other members. Is FALSE only for BPO relocs in a GC:ed
131 /* We attach this as mmix_elf_section_data (sec)->bpo in the linker-allocated
132 greg contents section (MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME),
133 which is linked into the register contents section
134 (MMIX_REG_CONTENTS_SECTION_NAME). This section is created by the
135 linker; using the same hook as for usual with BPO relocs does not
137 struct bpo_greg_section_info
139 /* After GC, this reflects the number of remaining, non-excluded
143 /* This is the number of allocated bpo_reloc_requests; the size of
144 sorted_indexes. Valid after the check.*relocs functions are called
145 for all incoming sections. It includes the number of BPO relocs in
146 sections that were GC:ed. */
147 size_t n_max_bpo_relocs;
149 /* A counter used to find out when to fold the BPO gregs, since we
150 don't have a single "after-relaxation" hook. */
151 size_t n_remaining_bpo_relocs_this_relaxation_round;
153 /* The number of linker-allocated GREGs resulting from BPO relocs.
154 This is an approximation after _bfd_mmix_before_linker_allocation
155 and supposedly accurate after mmix_elf_relax_section is called for
156 all incoming non-collected sections. */
157 size_t n_allocated_bpo_gregs;
159 /* Index into reloc_request[], sorted on increasing "value", secondary
160 by increasing index for strict sorting order. */
161 size_t *bpo_reloc_indexes;
163 /* An array of all relocations, with the "value" member filled in by
164 the relaxation function. */
165 struct bpo_reloc_request *reloc_request;
169 extern bfd_boolean mmix_elf_final_link (bfd *, struct bfd_link_info *);
171 extern void mmix_elf_symbol_processing (bfd *, asymbol *);
173 /* Only intended to be called from a debugger. */
174 extern void mmix_dump_bpo_gregs
175 (struct bfd_link_info *, bfd_error_handler_type);
178 mmix_set_relaxable_size (bfd *, asection *, void *);
179 static bfd_reloc_status_type
180 mmix_elf_reloc (bfd *, arelent *, asymbol *, void *,
181 asection *, bfd *, char **);
182 static bfd_reloc_status_type
183 mmix_final_link_relocate (reloc_howto_type *, asection *, bfd_byte *, bfd_vma,
184 bfd_signed_vma, bfd_vma, const char *, asection *,
188 /* Watch out: this currently needs to have elements with the same index as
189 their R_MMIX_ number. */
190 static reloc_howto_type elf_mmix_howto_table[] =
192 /* This reloc does nothing. */
193 HOWTO (R_MMIX_NONE, /* type */
195 2, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE, /* pc_relative */
199 complain_overflow_bitfield, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_MMIX_NONE", /* name */
202 FALSE, /* partial_inplace */
205 FALSE), /* pcrel_offset */
207 /* An 8 bit absolute relocation. */
208 HOWTO (R_MMIX_8, /* type */
210 0, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE, /* pc_relative */
214 complain_overflow_bitfield, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_MMIX_8", /* name */
217 FALSE, /* partial_inplace */
220 FALSE), /* pcrel_offset */
222 /* An 16 bit absolute relocation. */
223 HOWTO (R_MMIX_16, /* type */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
227 FALSE, /* pc_relative */
229 complain_overflow_bitfield, /* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_MMIX_16", /* name */
232 FALSE, /* partial_inplace */
234 0xffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
237 /* An 24 bit absolute relocation. */
238 HOWTO (R_MMIX_24, /* type */
240 2, /* size (0 = byte, 1 = short, 2 = long) */
242 FALSE, /* pc_relative */
244 complain_overflow_bitfield, /* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_MMIX_24", /* name */
247 FALSE, /* partial_inplace */
248 ~0xffffff, /* src_mask */
249 0xffffff, /* dst_mask */
250 FALSE), /* pcrel_offset */
252 /* A 32 bit absolute relocation. */
253 HOWTO (R_MMIX_32, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE, /* pc_relative */
259 complain_overflow_bitfield, /* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_MMIX_32", /* name */
262 FALSE, /* partial_inplace */
264 0xffffffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
267 /* 64 bit relocation. */
268 HOWTO (R_MMIX_64, /* type */
270 4, /* size (0 = byte, 1 = short, 2 = long) */
272 FALSE, /* pc_relative */
274 complain_overflow_bitfield, /* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_MMIX_64", /* name */
277 FALSE, /* partial_inplace */
279 MINUS_ONE, /* dst_mask */
280 FALSE), /* pcrel_offset */
282 /* An 8 bit PC-relative relocation. */
283 HOWTO (R_MMIX_PC_8, /* type */
285 0, /* size (0 = byte, 1 = short, 2 = long) */
287 TRUE, /* pc_relative */
289 complain_overflow_bitfield, /* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_MMIX_PC_8", /* name */
292 FALSE, /* partial_inplace */
295 TRUE), /* pcrel_offset */
297 /* An 16 bit PC-relative relocation. */
298 HOWTO (R_MMIX_PC_16, /* type */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
302 TRUE, /* pc_relative */
304 complain_overflow_bitfield, /* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_MMIX_PC_16", /* name */
307 FALSE, /* partial_inplace */
309 0xffff, /* dst_mask */
310 TRUE), /* pcrel_offset */
312 /* An 24 bit PC-relative relocation. */
313 HOWTO (R_MMIX_PC_24, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 TRUE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_MMIX_PC_24", /* name */
322 FALSE, /* partial_inplace */
323 ~0xffffff, /* src_mask */
324 0xffffff, /* dst_mask */
325 TRUE), /* pcrel_offset */
327 /* A 32 bit absolute PC-relative relocation. */
328 HOWTO (R_MMIX_PC_32, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 TRUE, /* pc_relative */
334 complain_overflow_bitfield, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_MMIX_PC_32", /* name */
337 FALSE, /* partial_inplace */
339 0xffffffff, /* dst_mask */
340 TRUE), /* pcrel_offset */
342 /* 64 bit PC-relative relocation. */
343 HOWTO (R_MMIX_PC_64, /* type */
345 4, /* size (0 = byte, 1 = short, 2 = long) */
347 TRUE, /* pc_relative */
349 complain_overflow_bitfield, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_MMIX_PC_64", /* name */
352 FALSE, /* partial_inplace */
354 MINUS_ONE, /* dst_mask */
355 TRUE), /* pcrel_offset */
357 /* GNU extension to record C++ vtable hierarchy. */
358 HOWTO (R_MMIX_GNU_VTINHERIT, /* type */
360 0, /* size (0 = byte, 1 = short, 2 = long) */
362 FALSE, /* pc_relative */
364 complain_overflow_dont, /* complain_on_overflow */
365 NULL, /* special_function */
366 "R_MMIX_GNU_VTINHERIT", /* name */
367 FALSE, /* partial_inplace */
370 TRUE), /* pcrel_offset */
372 /* GNU extension to record C++ vtable member usage. */
373 HOWTO (R_MMIX_GNU_VTENTRY, /* type */
375 0, /* size (0 = byte, 1 = short, 2 = long) */
377 FALSE, /* pc_relative */
379 complain_overflow_dont, /* complain_on_overflow */
380 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
381 "R_MMIX_GNU_VTENTRY", /* name */
382 FALSE, /* partial_inplace */
385 FALSE), /* pcrel_offset */
387 /* The GETA relocation is supposed to get any address that could
388 possibly be reached by the GETA instruction. It can silently expand
389 to get a 64-bit operand, but will complain if any of the two least
390 significant bits are set. The howto members reflect a simple GETA. */
391 HOWTO (R_MMIX_GETA, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE, /* pc_relative */
397 complain_overflow_signed, /* complain_on_overflow */
398 mmix_elf_reloc, /* special_function */
399 "R_MMIX_GETA", /* name */
400 FALSE, /* partial_inplace */
401 ~0x0100ffff, /* src_mask */
402 0x0100ffff, /* dst_mask */
403 TRUE), /* pcrel_offset */
405 HOWTO (R_MMIX_GETA_1, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 TRUE, /* pc_relative */
411 complain_overflow_signed, /* complain_on_overflow */
412 mmix_elf_reloc, /* special_function */
413 "R_MMIX_GETA_1", /* name */
414 FALSE, /* partial_inplace */
415 ~0x0100ffff, /* src_mask */
416 0x0100ffff, /* dst_mask */
417 TRUE), /* pcrel_offset */
419 HOWTO (R_MMIX_GETA_2, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 mmix_elf_reloc, /* special_function */
427 "R_MMIX_GETA_2", /* name */
428 FALSE, /* partial_inplace */
429 ~0x0100ffff, /* src_mask */
430 0x0100ffff, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 HOWTO (R_MMIX_GETA_3, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE, /* pc_relative */
439 complain_overflow_signed, /* complain_on_overflow */
440 mmix_elf_reloc, /* special_function */
441 "R_MMIX_GETA_3", /* name */
442 FALSE, /* partial_inplace */
443 ~0x0100ffff, /* src_mask */
444 0x0100ffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
447 /* The conditional branches are supposed to reach any (code) address.
448 It can silently expand to a 64-bit operand, but will emit an error if
449 any of the two least significant bits are set. The howto members
450 reflect a simple branch. */
451 HOWTO (R_MMIX_CBRANCH, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 TRUE, /* pc_relative */
457 complain_overflow_signed, /* complain_on_overflow */
458 mmix_elf_reloc, /* special_function */
459 "R_MMIX_CBRANCH", /* name */
460 FALSE, /* partial_inplace */
461 ~0x0100ffff, /* src_mask */
462 0x0100ffff, /* dst_mask */
463 TRUE), /* pcrel_offset */
465 HOWTO (R_MMIX_CBRANCH_J, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 mmix_elf_reloc, /* special_function */
473 "R_MMIX_CBRANCH_J", /* name */
474 FALSE, /* partial_inplace */
475 ~0x0100ffff, /* src_mask */
476 0x0100ffff, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 HOWTO (R_MMIX_CBRANCH_1, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE, /* pc_relative */
485 complain_overflow_signed, /* complain_on_overflow */
486 mmix_elf_reloc, /* special_function */
487 "R_MMIX_CBRANCH_1", /* name */
488 FALSE, /* partial_inplace */
489 ~0x0100ffff, /* src_mask */
490 0x0100ffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
493 HOWTO (R_MMIX_CBRANCH_2, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 TRUE, /* pc_relative */
499 complain_overflow_signed, /* complain_on_overflow */
500 mmix_elf_reloc, /* special_function */
501 "R_MMIX_CBRANCH_2", /* name */
502 FALSE, /* partial_inplace */
503 ~0x0100ffff, /* src_mask */
504 0x0100ffff, /* dst_mask */
505 TRUE), /* pcrel_offset */
507 HOWTO (R_MMIX_CBRANCH_3, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 TRUE, /* pc_relative */
513 complain_overflow_signed, /* complain_on_overflow */
514 mmix_elf_reloc, /* special_function */
515 "R_MMIX_CBRANCH_3", /* name */
516 FALSE, /* partial_inplace */
517 ~0x0100ffff, /* src_mask */
518 0x0100ffff, /* dst_mask */
519 TRUE), /* pcrel_offset */
521 /* The PUSHJ instruction can reach any (code) address, as long as it's
522 the beginning of a function (no usable restriction). It can silently
523 expand to a 64-bit operand, but will emit an error if any of the two
524 least significant bits are set. It can also expand into a call to a
525 stub; see R_MMIX_PUSHJ_STUBBABLE. The howto members reflect a simple
527 HOWTO (R_MMIX_PUSHJ, /* type */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
531 TRUE, /* pc_relative */
533 complain_overflow_signed, /* complain_on_overflow */
534 mmix_elf_reloc, /* special_function */
535 "R_MMIX_PUSHJ", /* name */
536 FALSE, /* partial_inplace */
537 ~0x0100ffff, /* src_mask */
538 0x0100ffff, /* dst_mask */
539 TRUE), /* pcrel_offset */
541 HOWTO (R_MMIX_PUSHJ_1, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 TRUE, /* pc_relative */
547 complain_overflow_signed, /* complain_on_overflow */
548 mmix_elf_reloc, /* special_function */
549 "R_MMIX_PUSHJ_1", /* name */
550 FALSE, /* partial_inplace */
551 ~0x0100ffff, /* src_mask */
552 0x0100ffff, /* dst_mask */
553 TRUE), /* pcrel_offset */
555 HOWTO (R_MMIX_PUSHJ_2, /* type */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
559 TRUE, /* pc_relative */
561 complain_overflow_signed, /* complain_on_overflow */
562 mmix_elf_reloc, /* special_function */
563 "R_MMIX_PUSHJ_2", /* name */
564 FALSE, /* partial_inplace */
565 ~0x0100ffff, /* src_mask */
566 0x0100ffff, /* dst_mask */
567 TRUE), /* pcrel_offset */
569 HOWTO (R_MMIX_PUSHJ_3, /* type */
571 2, /* size (0 = byte, 1 = short, 2 = long) */
573 TRUE, /* pc_relative */
575 complain_overflow_signed, /* complain_on_overflow */
576 mmix_elf_reloc, /* special_function */
577 "R_MMIX_PUSHJ_3", /* name */
578 FALSE, /* partial_inplace */
579 ~0x0100ffff, /* src_mask */
580 0x0100ffff, /* dst_mask */
581 TRUE), /* pcrel_offset */
583 /* A JMP is supposed to reach any (code) address. By itself, it can
584 reach +-64M; the expansion can reach all 64 bits. Note that the 64M
585 limit is soon reached if you link the program in wildly different
586 memory segments. The howto members reflect a trivial JMP. */
587 HOWTO (R_MMIX_JMP, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE, /* pc_relative */
593 complain_overflow_signed, /* complain_on_overflow */
594 mmix_elf_reloc, /* special_function */
595 "R_MMIX_JMP", /* name */
596 FALSE, /* partial_inplace */
597 ~0x1ffffff, /* src_mask */
598 0x1ffffff, /* dst_mask */
599 TRUE), /* pcrel_offset */
601 HOWTO (R_MMIX_JMP_1, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 TRUE, /* pc_relative */
607 complain_overflow_signed, /* complain_on_overflow */
608 mmix_elf_reloc, /* special_function */
609 "R_MMIX_JMP_1", /* name */
610 FALSE, /* partial_inplace */
611 ~0x1ffffff, /* src_mask */
612 0x1ffffff, /* dst_mask */
613 TRUE), /* pcrel_offset */
615 HOWTO (R_MMIX_JMP_2, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 TRUE, /* pc_relative */
621 complain_overflow_signed, /* complain_on_overflow */
622 mmix_elf_reloc, /* special_function */
623 "R_MMIX_JMP_2", /* name */
624 FALSE, /* partial_inplace */
625 ~0x1ffffff, /* src_mask */
626 0x1ffffff, /* dst_mask */
627 TRUE), /* pcrel_offset */
629 HOWTO (R_MMIX_JMP_3, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 TRUE, /* pc_relative */
635 complain_overflow_signed, /* complain_on_overflow */
636 mmix_elf_reloc, /* special_function */
637 "R_MMIX_JMP_3", /* name */
638 FALSE, /* partial_inplace */
639 ~0x1ffffff, /* src_mask */
640 0x1ffffff, /* dst_mask */
641 TRUE), /* pcrel_offset */
643 /* When we don't emit link-time-relaxable code from the assembler, or
644 when relaxation has done all it can do, these relocs are used. For
645 GETA/PUSHJ/branches. */
646 HOWTO (R_MMIX_ADDR19, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 TRUE, /* pc_relative */
652 complain_overflow_signed, /* complain_on_overflow */
653 mmix_elf_reloc, /* special_function */
654 "R_MMIX_ADDR19", /* name */
655 FALSE, /* partial_inplace */
656 ~0x0100ffff, /* src_mask */
657 0x0100ffff, /* dst_mask */
658 TRUE), /* pcrel_offset */
661 HOWTO (R_MMIX_ADDR27, /* type */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
665 TRUE, /* pc_relative */
667 complain_overflow_signed, /* complain_on_overflow */
668 mmix_elf_reloc, /* special_function */
669 "R_MMIX_ADDR27", /* name */
670 FALSE, /* partial_inplace */
671 ~0x1ffffff, /* src_mask */
672 0x1ffffff, /* dst_mask */
673 TRUE), /* pcrel_offset */
675 /* A general register or the value 0..255. If a value, then the
676 instruction (offset -3) needs adjusting. */
677 HOWTO (R_MMIX_REG_OR_BYTE, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_bitfield, /* complain_on_overflow */
684 mmix_elf_reloc, /* special_function */
685 "R_MMIX_REG_OR_BYTE", /* name */
686 FALSE, /* partial_inplace */
689 FALSE), /* pcrel_offset */
691 /* A general register. */
692 HOWTO (R_MMIX_REG, /* type */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE, /* pc_relative */
698 complain_overflow_bitfield, /* complain_on_overflow */
699 mmix_elf_reloc, /* special_function */
700 "R_MMIX_REG", /* name */
701 FALSE, /* partial_inplace */
704 FALSE), /* pcrel_offset */
706 /* A register plus an index, corresponding to the relocation expression.
707 The sizes must correspond to the valid range of the expression, while
708 the bitmasks correspond to what we store in the image. */
709 HOWTO (R_MMIX_BASE_PLUS_OFFSET, /* type */
711 4, /* size (0 = byte, 1 = short, 2 = long) */
713 FALSE, /* pc_relative */
715 complain_overflow_bitfield, /* complain_on_overflow */
716 mmix_elf_reloc, /* special_function */
717 "R_MMIX_BASE_PLUS_OFFSET", /* name */
718 FALSE, /* partial_inplace */
720 0xffff, /* dst_mask */
721 FALSE), /* pcrel_offset */
723 /* A "magic" relocation for a LOCAL expression, asserting that the
724 expression is less than the number of global registers. No actual
725 modification of the contents is done. Implementing this as a
726 relocation was less intrusive than e.g. putting such expressions in a
727 section to discard *after* relocation. */
728 HOWTO (R_MMIX_LOCAL, /* type */
730 0, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 mmix_elf_reloc, /* special_function */
736 "R_MMIX_LOCAL", /* name */
737 FALSE, /* partial_inplace */
740 FALSE), /* pcrel_offset */
742 HOWTO (R_MMIX_PUSHJ_STUBBABLE, /* type */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
746 TRUE, /* pc_relative */
748 complain_overflow_signed, /* complain_on_overflow */
749 mmix_elf_reloc, /* special_function */
750 "R_MMIX_PUSHJ_STUBBABLE", /* name */
751 FALSE, /* partial_inplace */
752 ~0x0100ffff, /* src_mask */
753 0x0100ffff, /* dst_mask */
754 TRUE) /* pcrel_offset */
758 /* Map BFD reloc types to MMIX ELF reloc types. */
760 struct mmix_reloc_map
762 bfd_reloc_code_real_type bfd_reloc_val;
763 enum elf_mmix_reloc_type elf_reloc_val;
767 static const struct mmix_reloc_map mmix_reloc_map[] =
769 {BFD_RELOC_NONE, R_MMIX_NONE},
770 {BFD_RELOC_8, R_MMIX_8},
771 {BFD_RELOC_16, R_MMIX_16},
772 {BFD_RELOC_24, R_MMIX_24},
773 {BFD_RELOC_32, R_MMIX_32},
774 {BFD_RELOC_64, R_MMIX_64},
775 {BFD_RELOC_8_PCREL, R_MMIX_PC_8},
776 {BFD_RELOC_16_PCREL, R_MMIX_PC_16},
777 {BFD_RELOC_24_PCREL, R_MMIX_PC_24},
778 {BFD_RELOC_32_PCREL, R_MMIX_PC_32},
779 {BFD_RELOC_64_PCREL, R_MMIX_PC_64},
780 {BFD_RELOC_VTABLE_INHERIT, R_MMIX_GNU_VTINHERIT},
781 {BFD_RELOC_VTABLE_ENTRY, R_MMIX_GNU_VTENTRY},
782 {BFD_RELOC_MMIX_GETA, R_MMIX_GETA},
783 {BFD_RELOC_MMIX_CBRANCH, R_MMIX_CBRANCH},
784 {BFD_RELOC_MMIX_PUSHJ, R_MMIX_PUSHJ},
785 {BFD_RELOC_MMIX_JMP, R_MMIX_JMP},
786 {BFD_RELOC_MMIX_ADDR19, R_MMIX_ADDR19},
787 {BFD_RELOC_MMIX_ADDR27, R_MMIX_ADDR27},
788 {BFD_RELOC_MMIX_REG_OR_BYTE, R_MMIX_REG_OR_BYTE},
789 {BFD_RELOC_MMIX_REG, R_MMIX_REG},
790 {BFD_RELOC_MMIX_BASE_PLUS_OFFSET, R_MMIX_BASE_PLUS_OFFSET},
791 {BFD_RELOC_MMIX_LOCAL, R_MMIX_LOCAL},
792 {BFD_RELOC_MMIX_PUSHJ_STUBBABLE, R_MMIX_PUSHJ_STUBBABLE}
795 static reloc_howto_type *
796 bfd_elf64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
797 bfd_reloc_code_real_type code)
802 i < sizeof (mmix_reloc_map) / sizeof (mmix_reloc_map[0]);
805 if (mmix_reloc_map[i].bfd_reloc_val == code)
806 return &elf_mmix_howto_table[mmix_reloc_map[i].elf_reloc_val];
812 static reloc_howto_type *
813 bfd_elf64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
819 i < sizeof (elf_mmix_howto_table) / sizeof (elf_mmix_howto_table[0]);
821 if (elf_mmix_howto_table[i].name != NULL
822 && strcasecmp (elf_mmix_howto_table[i].name, r_name) == 0)
823 return &elf_mmix_howto_table[i];
829 mmix_elf_new_section_hook (bfd *abfd, asection *sec)
831 if (!sec->used_by_bfd)
833 struct _mmix_elf_section_data *sdata;
834 bfd_size_type amt = sizeof (*sdata);
836 sdata = bfd_zalloc (abfd, amt);
839 sec->used_by_bfd = sdata;
842 return _bfd_elf_new_section_hook (abfd, sec);
846 /* This function performs the actual bitfiddling and sanity check for a
847 final relocation. Each relocation gets its *worst*-case expansion
848 in size when it arrives here; any reduction in size should have been
849 caught in linker relaxation earlier. When we get here, the relocation
850 looks like the smallest instruction with SWYM:s (nop:s) appended to the
851 max size. We fill in those nop:s.
853 R_MMIX_GETA: (FIXME: Relaxation should break this up in 1, 2, 3 tetra)
857 INCML $N,(foo >> 16) & 0xffff
858 INCMH $N,(foo >> 32) & 0xffff
859 INCH $N,(foo >> 48) & 0xffff
861 R_MMIX_CBRANCH: (FIXME: Relaxation should break this up, but
862 condbranches needing relaxation might be rare enough to not be
873 R_MMIX_PUSHJ: (FIXME: Relaxation...)
882 R_MMIX_JMP: (FIXME: Relaxation...)
891 R_MMIX_ADDR19 and R_MMIX_ADDR27 are just filled in. */
893 static bfd_reloc_status_type
894 mmix_elf_perform_relocation (asection *isec, reloc_howto_type *howto,
895 void *datap, bfd_vma addr, bfd_vma value,
896 char **error_message)
898 bfd *abfd = isec->owner;
899 bfd_reloc_status_type flag = bfd_reloc_ok;
900 bfd_reloc_status_type r;
904 /* The worst case bits are all similar SETL/INCML/INCMH/INCH sequences.
905 We handle the differences here and the common sequence later. */
910 reg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
912 /* We change to an absolute value. */
918 int in1 = bfd_get_16 (abfd, (bfd_byte *) datap) << 16;
920 /* Invert the condition and prediction bit, and set the offset
921 to five instructions ahead.
923 We *can* do better if we want to. If the branch is found to be
924 within limits, we could leave the branch as is; there'll just
925 be a bunch of NOP:s after it. But we shouldn't see this
926 sequence often enough that it's worth doing it. */
929 (((in1 ^ ((PRED_INV_BIT | COND_INV_BIT) << 24)) & ~0xffff)
933 /* Put a "GO $255,$255,0" after the common sequence. */
935 ((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24) | 0xffff00,
936 (bfd_byte *) datap + 20);
938 /* Common sequence starts at offset 4. */
941 /* We change to an absolute value. */
946 case R_MMIX_PUSHJ_STUBBABLE:
947 /* If the address fits, we're fine. */
949 /* Note rightshift 0; see R_MMIX_JMP case below. */
950 && (r = bfd_check_overflow (complain_overflow_signed,
953 bfd_arch_bits_per_address (abfd),
954 value)) == bfd_reloc_ok)
955 goto pcrel_mmix_reloc_fits;
958 bfd_size_type size = isec->rawsize ? isec->rawsize : isec->size;
960 /* We have the bytes at the PUSHJ insn and need to get the
961 position for the stub. There's supposed to be room allocated
963 bfd_byte *stubcontents
964 = ((bfd_byte *) datap
965 - (addr - (isec->output_section->vma + isec->output_offset))
967 + mmix_elf_section_data (isec)->pjs.stub_offset);
970 if (mmix_elf_section_data (isec)->pjs.n_pushj_relocs == 0)
972 /* This shouldn't happen when linking to ELF or mmo, so
973 this is an attempt to link to "binary", right? We
974 can't access the output bfd, so we can't verify that
975 assumption. We only know that the critical
976 mmix_elf_check_common_relocs has not been called,
977 which happens when the output format is different
978 from the input format (and is not mmo). */
979 if (! mmix_elf_section_data (isec)->has_warned_pushj)
981 /* For the first such error per input section, produce
982 a verbose message. */
984 = _("invalid input relocation when producing"
985 " non-ELF, non-mmo format output."
986 "\n Please use the objcopy program to convert from"
988 "\n or assemble using"
989 " \"-no-expand\" (for gcc, \"-Wa,-no-expand\"");
990 mmix_elf_section_data (isec)->has_warned_pushj = TRUE;
991 return bfd_reloc_dangerous;
994 /* For subsequent errors, return this one, which is
995 rate-limited but looks a little bit different,
996 hopefully without affecting user-friendliness. */
997 return bfd_reloc_overflow;
1000 /* The address doesn't fit, so redirect the PUSHJ to the
1001 location of the stub. */
1002 r = mmix_elf_perform_relocation (isec,
1003 &elf_mmix_howto_table
1007 isec->output_section->vma
1008 + isec->output_offset
1010 + (mmix_elf_section_data (isec)
1014 if (r != bfd_reloc_ok)
1018 = (isec->output_section->vma
1019 + isec->output_offset
1021 + mmix_elf_section_data (isec)->pjs.stub_offset);
1023 /* We generate a simple JMP if that suffices, else the whole 5
1025 if (bfd_check_overflow (complain_overflow_signed,
1026 elf_mmix_howto_table[R_MMIX_ADDR27].bitsize,
1028 bfd_arch_bits_per_address (abfd),
1029 addr + value - stubaddr) == bfd_reloc_ok)
1031 bfd_put_32 (abfd, JMP_INSN_BYTE << 24, stubcontents);
1032 r = mmix_elf_perform_relocation (isec,
1033 &elf_mmix_howto_table
1037 value + addr - stubaddr,
1039 mmix_elf_section_data (isec)->pjs.stub_offset += 4;
1041 if (size + mmix_elf_section_data (isec)->pjs.stub_offset
1049 /* Put a "GO $255,0" after the common sequence. */
1051 ((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
1052 | 0xff00, (bfd_byte *) stubcontents + 16);
1054 /* Prepare for the general code to set the first part of the
1057 datap = stubcontents;
1058 mmix_elf_section_data (isec)->pjs.stub_offset
1059 += MAX_PUSHJ_STUB_SIZE;
1066 int inreg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
1068 /* Put a "PUSHGO $N,$255,0" after the common sequence. */
1070 ((PUSHGO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
1073 (bfd_byte *) datap + 16);
1075 /* We change to an absolute value. */
1081 /* This one is a little special. If we get here on a non-relaxing
1082 link, and the destination is actually in range, we don't need to
1084 If so, we fall through to the bit-fiddling relocs.
1086 FIXME: bfd_check_overflow seems broken; the relocation is
1087 rightshifted before testing, so supply a zero rightshift. */
1089 if (! ((value & 3) == 0
1090 && (r = bfd_check_overflow (complain_overflow_signed,
1093 bfd_arch_bits_per_address (abfd),
1094 value)) == bfd_reloc_ok))
1096 /* If the relocation doesn't fit in a JMP, we let the NOP:s be
1097 modified below, and put a "GO $255,$255,0" after the
1098 address-loading sequence. */
1100 ((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
1102 (bfd_byte *) datap + 16);
1104 /* We change to an absolute value. */
1111 pcrel_mmix_reloc_fits:
1112 /* These must be in range, or else we emit an error. */
1113 if ((value & 3) == 0
1114 /* Note rightshift 0; see above. */
1115 && (r = bfd_check_overflow (complain_overflow_signed,
1118 bfd_arch_bits_per_address (abfd),
1119 value)) == bfd_reloc_ok)
1122 = bfd_get_32 (abfd, (bfd_byte *) datap);
1125 if ((bfd_signed_vma) value < 0)
1128 value += (1 << (howto->bitsize - 1));
1136 (in1 & howto->src_mask)
1138 | (value & howto->dst_mask),
1139 (bfd_byte *) datap);
1141 return bfd_reloc_ok;
1144 return bfd_reloc_overflow;
1146 case R_MMIX_BASE_PLUS_OFFSET:
1148 struct bpo_reloc_section_info *bpodata
1149 = mmix_elf_section_data (isec)->bpo.reloc;
1150 asection *bpo_greg_section;
1151 struct bpo_greg_section_info *gregdata;
1154 if (bpodata == NULL)
1156 /* This shouldn't happen when linking to ELF or mmo, so
1157 this is an attempt to link to "binary", right? We
1158 can't access the output bfd, so we can't verify that
1159 assumption. We only know that the critical
1160 mmix_elf_check_common_relocs has not been called, which
1161 happens when the output format is different from the
1162 input format (and is not mmo). */
1163 if (! mmix_elf_section_data (isec)->has_warned_bpo)
1165 /* For the first such error per input section, produce
1166 a verbose message. */
1168 = _("invalid input relocation when producing"
1169 " non-ELF, non-mmo format output."
1170 "\n Please use the objcopy program to convert from"
1172 "\n or compile using the gcc-option"
1173 " \"-mno-base-addresses\".");
1174 mmix_elf_section_data (isec)->has_warned_bpo = TRUE;
1175 return bfd_reloc_dangerous;
1178 /* For subsequent errors, return this one, which is
1179 rate-limited but looks a little bit different,
1180 hopefully without affecting user-friendliness. */
1181 return bfd_reloc_overflow;
1184 bpo_greg_section = bpodata->bpo_greg_section;
1185 gregdata = mmix_elf_section_data (bpo_greg_section)->bpo.greg;
1186 bpo_index = gregdata->bpo_reloc_indexes[bpodata->bpo_index++];
1188 /* A consistency check: The value we now have in "relocation" must
1189 be the same as the value we stored for that relocation. It
1190 doesn't cost much, so can be left in at all times. */
1191 if (value != gregdata->reloc_request[bpo_index].value)
1193 (*_bfd_error_handler)
1194 (_("%s: Internal inconsistency error for value for\n\
1195 linker-allocated global register: linked: 0x%lx%08lx != relaxed: 0x%lx%08lx\n"),
1196 bfd_get_filename (isec->owner),
1197 (unsigned long) (value >> 32), (unsigned long) value,
1198 (unsigned long) (gregdata->reloc_request[bpo_index].value
1200 (unsigned long) gregdata->reloc_request[bpo_index].value);
1201 bfd_set_error (bfd_error_bad_value);
1202 return bfd_reloc_overflow;
1205 /* Then store the register number and offset for that register
1206 into datap and datap + 1 respectively. */
1208 gregdata->reloc_request[bpo_index].regindex
1209 + bpo_greg_section->output_section->vma / 8,
1212 gregdata->reloc_request[bpo_index].offset,
1213 ((unsigned char *) datap) + 1);
1214 return bfd_reloc_ok;
1217 case R_MMIX_REG_OR_BYTE:
1220 return bfd_reloc_overflow;
1221 bfd_put_8 (abfd, value, datap);
1222 return bfd_reloc_ok;
1225 BAD_CASE (howto->type);
1228 /* This code adds the common SETL/INCML/INCMH/INCH worst-case
1231 /* Lowest two bits must be 0. We return bfd_reloc_overflow for
1232 everything that looks strange. */
1234 flag = bfd_reloc_overflow;
1237 (SETL_INSN_BYTE << 24) | (value & 0xffff) | (reg << 16),
1238 (bfd_byte *) datap + offs);
1240 (INCML_INSN_BYTE << 24) | ((value >> 16) & 0xffff) | (reg << 16),
1241 (bfd_byte *) datap + offs + 4);
1243 (INCMH_INSN_BYTE << 24) | ((value >> 32) & 0xffff) | (reg << 16),
1244 (bfd_byte *) datap + offs + 8);
1246 (INCH_INSN_BYTE << 24) | ((value >> 48) & 0xffff) | (reg << 16),
1247 (bfd_byte *) datap + offs + 12);
1252 /* Set the howto pointer for an MMIX ELF reloc (type RELA). */
1255 mmix_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
1257 Elf_Internal_Rela *dst)
1259 unsigned int r_type;
1261 r_type = ELF64_R_TYPE (dst->r_info);
1262 BFD_ASSERT (r_type < (unsigned int) R_MMIX_max);
1263 cache_ptr->howto = &elf_mmix_howto_table[r_type];
1266 /* Any MMIX-specific relocation gets here at assembly time or when linking
1267 to other formats (such as mmo); this is the relocation function from
1268 the reloc_table. We don't get here for final pure ELF linking. */
1270 static bfd_reloc_status_type
1271 mmix_elf_reloc (bfd *abfd,
1272 arelent *reloc_entry,
1275 asection *input_section,
1277 char **error_message)
1280 bfd_reloc_status_type r;
1281 asection *reloc_target_output_section;
1282 bfd_reloc_status_type flag = bfd_reloc_ok;
1283 bfd_vma output_base = 0;
1285 r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1286 input_section, output_bfd, error_message);
1288 /* If that was all that was needed (i.e. this isn't a final link, only
1289 some segment adjustments), we're done. */
1290 if (r != bfd_reloc_continue)
1293 if (bfd_is_und_section (symbol->section)
1294 && (symbol->flags & BSF_WEAK) == 0
1295 && output_bfd == (bfd *) NULL)
1296 return bfd_reloc_undefined;
1298 /* Is the address of the relocation really within the section? */
1299 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1300 return bfd_reloc_outofrange;
1302 /* Work out which section the relocation is targeted at and the
1303 initial relocation command value. */
1305 /* Get symbol value. (Common symbols are special.) */
1306 if (bfd_is_com_section (symbol->section))
1309 relocation = symbol->value;
1311 reloc_target_output_section = bfd_get_output_section (symbol);
1313 /* Here the variable relocation holds the final address of the symbol we
1314 are relocating against, plus any addend. */
1318 output_base = reloc_target_output_section->vma;
1320 relocation += output_base + symbol->section->output_offset;
1322 if (output_bfd != (bfd *) NULL)
1324 /* Add in supplied addend. */
1325 relocation += reloc_entry->addend;
1327 /* This is a partial relocation, and we want to apply the
1328 relocation to the reloc entry rather than the raw data.
1329 Modify the reloc inplace to reflect what we now know. */
1330 reloc_entry->addend = relocation;
1331 reloc_entry->address += input_section->output_offset;
1335 return mmix_final_link_relocate (reloc_entry->howto, input_section,
1336 data, reloc_entry->address,
1337 reloc_entry->addend, relocation,
1338 bfd_asymbol_name (symbol),
1339 reloc_target_output_section,
1343 /* Relocate an MMIX ELF section. Modified from elf32-fr30.c; look to it
1344 for guidance if you're thinking of copying this. */
1347 mmix_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
1348 struct bfd_link_info *info,
1350 asection *input_section,
1352 Elf_Internal_Rela *relocs,
1353 Elf_Internal_Sym *local_syms,
1354 asection **local_sections)
1356 Elf_Internal_Shdr *symtab_hdr;
1357 struct elf_link_hash_entry **sym_hashes;
1358 Elf_Internal_Rela *rel;
1359 Elf_Internal_Rela *relend;
1363 size = input_section->rawsize ? input_section->rawsize : input_section->size;
1364 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1365 sym_hashes = elf_sym_hashes (input_bfd);
1366 relend = relocs + input_section->reloc_count;
1368 /* Zero the stub area before we start. */
1369 if (input_section->rawsize != 0
1370 && input_section->size > input_section->rawsize)
1371 memset (contents + input_section->rawsize, 0,
1372 input_section->size - input_section->rawsize);
1374 for (rel = relocs; rel < relend; rel ++)
1376 reloc_howto_type *howto;
1377 unsigned long r_symndx;
1378 Elf_Internal_Sym *sym;
1380 struct elf_link_hash_entry *h;
1382 bfd_reloc_status_type r;
1383 const char *name = NULL;
1385 bfd_boolean undefined_signalled = FALSE;
1387 r_type = ELF64_R_TYPE (rel->r_info);
1389 if (r_type == R_MMIX_GNU_VTINHERIT
1390 || r_type == R_MMIX_GNU_VTENTRY)
1393 r_symndx = ELF64_R_SYM (rel->r_info);
1395 howto = elf_mmix_howto_table + ELF64_R_TYPE (rel->r_info);
1400 if (r_symndx < symtab_hdr->sh_info)
1402 sym = local_syms + r_symndx;
1403 sec = local_sections [r_symndx];
1404 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1406 name = bfd_elf_string_from_elf_section (input_bfd,
1407 symtab_hdr->sh_link,
1410 name = bfd_section_name (input_bfd, sec);
1414 bfd_boolean unresolved_reloc, ignored;
1416 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1417 r_symndx, symtab_hdr, sym_hashes,
1419 unresolved_reloc, undefined_signalled,
1421 name = h->root.root.string;
1424 if (sec != NULL && discarded_section (sec))
1425 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1426 rel, 1, relend, howto, 0, contents);
1428 if (info->relocatable)
1430 /* This is a relocatable link. For most relocs we don't have to
1431 change anything, unless the reloc is against a section
1432 symbol, in which case we have to adjust according to where
1433 the section symbol winds up in the output section. */
1434 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1435 rel->r_addend += sec->output_offset;
1437 /* For PUSHJ stub relocs however, we may need to change the
1438 reloc and the section contents, if the reloc doesn't reach
1439 beyond the end of the output section and previous stubs.
1440 Then we change the section contents to be a PUSHJ to the end
1441 of the input section plus stubs (we can do that without using
1442 a reloc), and then we change the reloc to be a R_MMIX_PUSHJ
1443 at the stub location. */
1444 if (r_type == R_MMIX_PUSHJ_STUBBABLE)
1446 /* We've already checked whether we need a stub; use that
1448 if (mmix_elf_section_data (input_section)->pjs.stub_size[pjsno]
1451 Elf_Internal_Rela relcpy;
1453 if (mmix_elf_section_data (input_section)
1454 ->pjs.stub_size[pjsno] != MAX_PUSHJ_STUB_SIZE)
1457 /* There's already a PUSHJ insn there, so just fill in
1458 the offset bits to the stub. */
1459 if (mmix_final_link_relocate (elf_mmix_howto_table
1466 ->output_section->vma
1467 + input_section->output_offset
1469 + mmix_elf_section_data (input_section)
1471 NULL, NULL, NULL) != bfd_reloc_ok)
1474 /* Put a JMP insn at the stub; it goes with the
1475 R_MMIX_JMP reloc. */
1476 bfd_put_32 (output_bfd, JMP_INSN_BYTE << 24,
1479 + mmix_elf_section_data (input_section)
1482 /* Change the reloc to be at the stub, and to a full
1483 R_MMIX_JMP reloc. */
1484 rel->r_info = ELF64_R_INFO (r_symndx, R_MMIX_JMP);
1487 + mmix_elf_section_data (input_section)
1490 mmix_elf_section_data (input_section)->pjs.stub_offset
1491 += MAX_PUSHJ_STUB_SIZE;
1493 /* Shift this reloc to the end of the relocs to maintain
1494 the r_offset sorted reloc order. */
1496 memmove (rel, rel + 1, (char *) relend - (char *) rel);
1497 relend[-1] = relcpy;
1499 /* Back up one reloc, or else we'd skip the next reloc
1509 r = mmix_final_link_relocate (howto, input_section,
1510 contents, rel->r_offset,
1511 rel->r_addend, relocation, name, sec, NULL);
1513 if (r != bfd_reloc_ok)
1515 bfd_boolean check_ok = TRUE;
1516 const char * msg = (const char *) NULL;
1520 case bfd_reloc_overflow:
1521 check_ok = info->callbacks->reloc_overflow
1522 (info, (h ? &h->root : NULL), name, howto->name,
1523 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1526 case bfd_reloc_undefined:
1527 /* We may have sent this message above. */
1528 if (! undefined_signalled)
1529 check_ok = info->callbacks->undefined_symbol
1530 (info, name, input_bfd, input_section, rel->r_offset,
1532 undefined_signalled = TRUE;
1535 case bfd_reloc_outofrange:
1536 msg = _("internal error: out of range error");
1539 case bfd_reloc_notsupported:
1540 msg = _("internal error: unsupported relocation error");
1543 case bfd_reloc_dangerous:
1544 msg = _("internal error: dangerous relocation");
1548 msg = _("internal error: unknown error");
1553 check_ok = info->callbacks->warning
1554 (info, msg, name, input_bfd, input_section, rel->r_offset);
1564 /* Perform a single relocation. By default we use the standard BFD
1565 routines. A few relocs we have to do ourselves. */
1567 static bfd_reloc_status_type
1568 mmix_final_link_relocate (reloc_howto_type *howto, asection *input_section,
1569 bfd_byte *contents, bfd_vma r_offset,
1570 bfd_signed_vma r_addend, bfd_vma relocation,
1571 const char *symname, asection *symsec,
1572 char **error_message)
1574 bfd_reloc_status_type r = bfd_reloc_ok;
1576 = (input_section->output_section->vma
1577 + input_section->output_offset
1580 = (bfd_signed_vma) relocation + r_addend;
1582 switch (howto->type)
1584 /* All these are PC-relative. */
1585 case R_MMIX_PUSHJ_STUBBABLE:
1587 case R_MMIX_CBRANCH:
1592 contents += r_offset;
1594 srel -= (input_section->output_section->vma
1595 + input_section->output_offset
1598 r = mmix_elf_perform_relocation (input_section, howto, contents,
1599 addr, srel, error_message);
1602 case R_MMIX_BASE_PLUS_OFFSET:
1604 return bfd_reloc_undefined;
1606 /* Check that we're not relocating against a register symbol. */
1607 if (strcmp (bfd_get_section_name (symsec->owner, symsec),
1608 MMIX_REG_CONTENTS_SECTION_NAME) == 0
1609 || strcmp (bfd_get_section_name (symsec->owner, symsec),
1610 MMIX_REG_SECTION_NAME) == 0)
1612 /* Note: This is separated out into two messages in order
1613 to ease the translation into other languages. */
1614 if (symname == NULL || *symname == 0)
1615 (*_bfd_error_handler)
1616 (_("%s: base-plus-offset relocation against register symbol: (unknown) in %s"),
1617 bfd_get_filename (input_section->owner),
1618 bfd_get_section_name (symsec->owner, symsec));
1620 (*_bfd_error_handler)
1621 (_("%s: base-plus-offset relocation against register symbol: %s in %s"),
1622 bfd_get_filename (input_section->owner), symname,
1623 bfd_get_section_name (symsec->owner, symsec));
1624 return bfd_reloc_overflow;
1628 case R_MMIX_REG_OR_BYTE:
1630 /* For now, we handle these alike. They must refer to an register
1631 symbol, which is either relative to the register section and in
1632 the range 0..255, or is in the register contents section with vma
1635 /* FIXME: A better way to check for reg contents section?
1636 FIXME: Postpone section->scaling to mmix_elf_perform_relocation? */
1638 return bfd_reloc_undefined;
1640 if (strcmp (bfd_get_section_name (symsec->owner, symsec),
1641 MMIX_REG_CONTENTS_SECTION_NAME) == 0)
1643 if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
1645 /* The bfd_reloc_outofrange return value, though intuitively
1646 a better value, will not get us an error. */
1647 return bfd_reloc_overflow;
1651 else if (strcmp (bfd_get_section_name (symsec->owner, symsec),
1652 MMIX_REG_SECTION_NAME) == 0)
1654 if (srel < 0 || srel > 255)
1655 /* The bfd_reloc_outofrange return value, though intuitively a
1656 better value, will not get us an error. */
1657 return bfd_reloc_overflow;
1661 /* Note: This is separated out into two messages in order
1662 to ease the translation into other languages. */
1663 if (symname == NULL || *symname == 0)
1664 (*_bfd_error_handler)
1665 (_("%s: register relocation against non-register symbol: (unknown) in %s"),
1666 bfd_get_filename (input_section->owner),
1667 bfd_get_section_name (symsec->owner, symsec));
1669 (*_bfd_error_handler)
1670 (_("%s: register relocation against non-register symbol: %s in %s"),
1671 bfd_get_filename (input_section->owner), symname,
1672 bfd_get_section_name (symsec->owner, symsec));
1674 /* The bfd_reloc_outofrange return value, though intuitively a
1675 better value, will not get us an error. */
1676 return bfd_reloc_overflow;
1679 contents += r_offset;
1680 r = mmix_elf_perform_relocation (input_section, howto, contents,
1681 addr, srel, error_message);
1685 /* This isn't a real relocation, it's just an assertion that the
1686 final relocation value corresponds to a local register. We
1687 ignore the actual relocation; nothing is changed. */
1690 = bfd_get_section_by_name (input_section->output_section->owner,
1691 MMIX_REG_CONTENTS_SECTION_NAME);
1692 bfd_vma first_global;
1694 /* Check that this is an absolute value, or a reference to the
1695 register contents section or the register (symbol) section.
1696 Absolute numbers can get here as undefined section. Undefined
1697 symbols are signalled elsewhere, so there's no conflict in us
1698 accidentally handling it. */
1699 if (!bfd_is_abs_section (symsec)
1700 && !bfd_is_und_section (symsec)
1701 && strcmp (bfd_get_section_name (symsec->owner, symsec),
1702 MMIX_REG_CONTENTS_SECTION_NAME) != 0
1703 && strcmp (bfd_get_section_name (symsec->owner, symsec),
1704 MMIX_REG_SECTION_NAME) != 0)
1706 (*_bfd_error_handler)
1707 (_("%s: directive LOCAL valid only with a register or absolute value"),
1708 bfd_get_filename (input_section->owner));
1710 return bfd_reloc_overflow;
1713 /* If we don't have a register contents section, then $255 is the
1714 first global register. */
1720 = bfd_get_section_vma (input_section->output_section->owner,
1722 if (strcmp (bfd_get_section_name (symsec->owner, symsec),
1723 MMIX_REG_CONTENTS_SECTION_NAME) == 0)
1725 if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
1726 /* The bfd_reloc_outofrange return value, though
1727 intuitively a better value, will not get us an error. */
1728 return bfd_reloc_overflow;
1733 if ((bfd_vma) srel >= first_global)
1735 /* FIXME: Better error message. */
1736 (*_bfd_error_handler)
1737 (_("%s: LOCAL directive: Register $%ld is not a local register. First global register is $%ld."),
1738 bfd_get_filename (input_section->owner), (long) srel, (long) first_global);
1740 return bfd_reloc_overflow;
1747 r = _bfd_final_link_relocate (howto, input_section->owner, input_section,
1749 relocation, r_addend);
1755 /* Return the section that should be marked against GC for a given
1759 mmix_elf_gc_mark_hook (asection *sec,
1760 struct bfd_link_info *info,
1761 Elf_Internal_Rela *rel,
1762 struct elf_link_hash_entry *h,
1763 Elf_Internal_Sym *sym)
1766 switch (ELF64_R_TYPE (rel->r_info))
1768 case R_MMIX_GNU_VTINHERIT:
1769 case R_MMIX_GNU_VTENTRY:
1773 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1776 /* Update relocation info for a GC-excluded section. We could supposedly
1777 perform the allocation after GC, but there's no suitable hook between
1778 GC (or section merge) and the point when all input sections must be
1779 present. Better to waste some memory and (perhaps) a little time. */
1782 mmix_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
1783 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1785 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1787 struct bpo_reloc_section_info *bpodata
1788 = mmix_elf_section_data (sec)->bpo.reloc;
1789 asection *allocated_gregs_section;
1791 /* If no bpodata here, we have nothing to do. */
1792 if (bpodata == NULL)
1795 allocated_gregs_section = bpodata->bpo_greg_section;
1797 mmix_elf_section_data (allocated_gregs_section)->bpo.greg->n_bpo_relocs
1798 -= bpodata->n_bpo_relocs_this_section;
1803 /* Sort register relocs to come before expanding relocs. */
1806 mmix_elf_sort_relocs (const void * p1, const void * p2)
1808 const Elf_Internal_Rela *r1 = (const Elf_Internal_Rela *) p1;
1809 const Elf_Internal_Rela *r2 = (const Elf_Internal_Rela *) p2;
1810 int r1_is_reg, r2_is_reg;
1812 /* Sort primarily on r_offset & ~3, so relocs are done to consecutive
1814 if ((r1->r_offset & ~(bfd_vma) 3) > (r2->r_offset & ~(bfd_vma) 3))
1816 else if ((r1->r_offset & ~(bfd_vma) 3) < (r2->r_offset & ~(bfd_vma) 3))
1820 = (ELF64_R_TYPE (r1->r_info) == R_MMIX_REG_OR_BYTE
1821 || ELF64_R_TYPE (r1->r_info) == R_MMIX_REG);
1823 = (ELF64_R_TYPE (r2->r_info) == R_MMIX_REG_OR_BYTE
1824 || ELF64_R_TYPE (r2->r_info) == R_MMIX_REG);
1825 if (r1_is_reg != r2_is_reg)
1826 return r2_is_reg - r1_is_reg;
1828 /* Neither or both are register relocs. Then sort on full offset. */
1829 if (r1->r_offset > r2->r_offset)
1831 else if (r1->r_offset < r2->r_offset)
1836 /* Subset of mmix_elf_check_relocs, common to ELF and mmo linking. */
1839 mmix_elf_check_common_relocs (bfd *abfd,
1840 struct bfd_link_info *info,
1842 const Elf_Internal_Rela *relocs)
1844 bfd *bpo_greg_owner = NULL;
1845 asection *allocated_gregs_section = NULL;
1846 struct bpo_greg_section_info *gregdata = NULL;
1847 struct bpo_reloc_section_info *bpodata = NULL;
1848 const Elf_Internal_Rela *rel;
1849 const Elf_Internal_Rela *rel_end;
1851 /* We currently have to abuse this COFF-specific member, since there's
1852 no target-machine-dedicated member. There's no alternative outside
1853 the bfd_link_info struct; we can't specialize a hash-table since
1854 they're different between ELF and mmo. */
1855 bpo_greg_owner = (bfd *) info->base_file;
1857 rel_end = relocs + sec->reloc_count;
1858 for (rel = relocs; rel < rel_end; rel++)
1860 switch (ELF64_R_TYPE (rel->r_info))
1862 /* This relocation causes a GREG allocation. We need to count
1863 them, and we need to create a section for them, so we need an
1864 object to fake as the owner of that section. We can't use
1865 the ELF dynobj for this, since the ELF bits assume lots of
1866 DSO-related stuff if that member is non-NULL. */
1867 case R_MMIX_BASE_PLUS_OFFSET:
1868 /* We don't do anything with this reloc for a relocatable link. */
1869 if (info->relocatable)
1872 if (bpo_greg_owner == NULL)
1874 bpo_greg_owner = abfd;
1875 info->base_file = bpo_greg_owner;
1878 if (allocated_gregs_section == NULL)
1879 allocated_gregs_section
1880 = bfd_get_section_by_name (bpo_greg_owner,
1881 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
1883 if (allocated_gregs_section == NULL)
1885 allocated_gregs_section
1886 = bfd_make_section_with_flags (bpo_greg_owner,
1887 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME,
1890 | SEC_LINKER_CREATED));
1891 /* Setting both SEC_ALLOC and SEC_LOAD means the section is
1892 treated like any other section, and we'd get errors for
1893 address overlap with the text section. Let's set none of
1894 those flags, as that is what currently happens for usual
1895 GREG allocations, and that works. */
1896 if (allocated_gregs_section == NULL
1897 || !bfd_set_section_alignment (bpo_greg_owner,
1898 allocated_gregs_section,
1902 gregdata = (struct bpo_greg_section_info *)
1903 bfd_zalloc (bpo_greg_owner, sizeof (struct bpo_greg_section_info));
1904 if (gregdata == NULL)
1906 mmix_elf_section_data (allocated_gregs_section)->bpo.greg
1909 else if (gregdata == NULL)
1911 = mmix_elf_section_data (allocated_gregs_section)->bpo.greg;
1913 /* Get ourselves some auxiliary info for the BPO-relocs. */
1914 if (bpodata == NULL)
1916 /* No use doing a separate iteration pass to find the upper
1917 limit - just use the number of relocs. */
1918 bpodata = (struct bpo_reloc_section_info *)
1919 bfd_alloc (bpo_greg_owner,
1920 sizeof (struct bpo_reloc_section_info)
1921 * (sec->reloc_count + 1));
1922 if (bpodata == NULL)
1924 mmix_elf_section_data (sec)->bpo.reloc = bpodata;
1925 bpodata->first_base_plus_offset_reloc
1926 = bpodata->bpo_index
1927 = gregdata->n_max_bpo_relocs;
1928 bpodata->bpo_greg_section
1929 = allocated_gregs_section;
1930 bpodata->n_bpo_relocs_this_section = 0;
1933 bpodata->n_bpo_relocs_this_section++;
1934 gregdata->n_max_bpo_relocs++;
1936 /* We don't get another chance to set this before GC; we've not
1937 set up any hook that runs before GC. */
1938 gregdata->n_bpo_relocs
1939 = gregdata->n_max_bpo_relocs;
1942 case R_MMIX_PUSHJ_STUBBABLE:
1943 mmix_elf_section_data (sec)->pjs.n_pushj_relocs++;
1948 /* Allocate per-reloc stub storage and initialize it to the max stub
1950 if (mmix_elf_section_data (sec)->pjs.n_pushj_relocs != 0)
1954 mmix_elf_section_data (sec)->pjs.stub_size
1955 = bfd_alloc (abfd, mmix_elf_section_data (sec)->pjs.n_pushj_relocs
1956 * sizeof (mmix_elf_section_data (sec)
1957 ->pjs.stub_size[0]));
1958 if (mmix_elf_section_data (sec)->pjs.stub_size == NULL)
1961 for (i = 0; i < mmix_elf_section_data (sec)->pjs.n_pushj_relocs; i++)
1962 mmix_elf_section_data (sec)->pjs.stub_size[i] = MAX_PUSHJ_STUB_SIZE;
1968 /* Look through the relocs for a section during the first phase. */
1971 mmix_elf_check_relocs (bfd *abfd,
1972 struct bfd_link_info *info,
1974 const Elf_Internal_Rela *relocs)
1976 Elf_Internal_Shdr *symtab_hdr;
1977 struct elf_link_hash_entry **sym_hashes;
1978 const Elf_Internal_Rela *rel;
1979 const Elf_Internal_Rela *rel_end;
1981 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1982 sym_hashes = elf_sym_hashes (abfd);
1984 /* First we sort the relocs so that any register relocs come before
1985 expansion-relocs to the same insn. FIXME: Not done for mmo. */
1986 qsort ((void *) relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
1987 mmix_elf_sort_relocs);
1989 /* Do the common part. */
1990 if (!mmix_elf_check_common_relocs (abfd, info, sec, relocs))
1993 if (info->relocatable)
1996 rel_end = relocs + sec->reloc_count;
1997 for (rel = relocs; rel < rel_end; rel++)
1999 struct elf_link_hash_entry *h;
2000 unsigned long r_symndx;
2002 r_symndx = ELF64_R_SYM (rel->r_info);
2003 if (r_symndx < symtab_hdr->sh_info)
2007 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2008 while (h->root.type == bfd_link_hash_indirect
2009 || h->root.type == bfd_link_hash_warning)
2010 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2012 /* PR15323, ref flags aren't set for references in the same
2014 h->root.non_ir_ref = 1;
2017 switch (ELF64_R_TYPE (rel->r_info))
2019 /* This relocation describes the C++ object vtable hierarchy.
2020 Reconstruct it for later use during GC. */
2021 case R_MMIX_GNU_VTINHERIT:
2022 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2026 /* This relocation describes which C++ vtable entries are actually
2027 used. Record for later use during GC. */
2028 case R_MMIX_GNU_VTENTRY:
2029 BFD_ASSERT (h != NULL);
2031 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2040 /* Wrapper for mmix_elf_check_common_relocs, called when linking to mmo.
2041 Copied from elf_link_add_object_symbols. */
2044 _bfd_mmix_check_all_relocs (bfd *abfd, struct bfd_link_info *info)
2048 for (o = abfd->sections; o != NULL; o = o->next)
2050 Elf_Internal_Rela *internal_relocs;
2053 if ((o->flags & SEC_RELOC) == 0
2054 || o->reloc_count == 0
2055 || ((info->strip == strip_all || info->strip == strip_debugger)
2056 && (o->flags & SEC_DEBUGGING) != 0)
2057 || bfd_is_abs_section (o->output_section))
2061 = _bfd_elf_link_read_relocs (abfd, o, NULL,
2062 (Elf_Internal_Rela *) NULL,
2064 if (internal_relocs == NULL)
2067 ok = mmix_elf_check_common_relocs (abfd, info, o, internal_relocs);
2069 if (! info->keep_memory)
2070 free (internal_relocs);
2079 /* Change symbols relative to the reg contents section to instead be to
2080 the register section, and scale them down to correspond to the register
2084 mmix_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2085 const char *name ATTRIBUTE_UNUSED,
2086 Elf_Internal_Sym *sym,
2087 asection *input_sec,
2088 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2090 if (input_sec != NULL
2091 && input_sec->name != NULL
2092 && ELF_ST_TYPE (sym->st_info) != STT_SECTION
2093 && strcmp (input_sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
2096 sym->st_shndx = SHN_REGISTER;
2102 /* We fake a register section that holds values that are register numbers.
2103 Having a SHN_REGISTER and register section translates better to other
2104 formats (e.g. mmo) than for example a STT_REGISTER attribute.
2105 This section faking is based on a construct in elf32-mips.c. */
2106 static asection mmix_elf_reg_section;
2107 static asymbol mmix_elf_reg_section_symbol;
2108 static asymbol *mmix_elf_reg_section_symbol_ptr;
2110 /* Handle the special section numbers that a symbol may use. */
2113 mmix_elf_symbol_processing (abfd, asym)
2114 bfd *abfd ATTRIBUTE_UNUSED;
2117 elf_symbol_type *elfsym;
2119 elfsym = (elf_symbol_type *) asym;
2120 switch (elfsym->internal_elf_sym.st_shndx)
2123 if (mmix_elf_reg_section.name == NULL)
2125 /* Initialize the register section. */
2126 mmix_elf_reg_section.name = MMIX_REG_SECTION_NAME;
2127 mmix_elf_reg_section.flags = SEC_NO_FLAGS;
2128 mmix_elf_reg_section.output_section = &mmix_elf_reg_section;
2129 mmix_elf_reg_section.symbol = &mmix_elf_reg_section_symbol;
2130 mmix_elf_reg_section.symbol_ptr_ptr = &mmix_elf_reg_section_symbol_ptr;
2131 mmix_elf_reg_section_symbol.name = MMIX_REG_SECTION_NAME;
2132 mmix_elf_reg_section_symbol.flags = BSF_SECTION_SYM;
2133 mmix_elf_reg_section_symbol.section = &mmix_elf_reg_section;
2134 mmix_elf_reg_section_symbol_ptr = &mmix_elf_reg_section_symbol;
2136 asym->section = &mmix_elf_reg_section;
2144 /* Given a BFD section, try to locate the corresponding ELF section
2148 mmix_elf_section_from_bfd_section (bfd * abfd ATTRIBUTE_UNUSED,
2152 if (strcmp (bfd_get_section_name (abfd, sec), MMIX_REG_SECTION_NAME) == 0)
2153 *retval = SHN_REGISTER;
2160 /* Hook called by the linker routine which adds symbols from an object
2161 file. We must handle the special SHN_REGISTER section number here.
2163 We also check that we only have *one* each of the section-start
2164 symbols, since otherwise having two with the same value would cause
2165 them to be "merged", but with the contents serialized. */
2168 mmix_elf_add_symbol_hook (bfd *abfd,
2169 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2170 Elf_Internal_Sym *sym,
2171 const char **namep ATTRIBUTE_UNUSED,
2172 flagword *flagsp ATTRIBUTE_UNUSED,
2174 bfd_vma *valp ATTRIBUTE_UNUSED)
2176 if (sym->st_shndx == SHN_REGISTER)
2178 *secp = bfd_make_section_old_way (abfd, MMIX_REG_SECTION_NAME);
2179 (*secp)->flags |= SEC_LINKER_CREATED;
2181 else if ((*namep)[0] == '_' && (*namep)[1] == '_' && (*namep)[2] == '.'
2182 && CONST_STRNEQ (*namep, MMIX_LOC_SECTION_START_SYMBOL_PREFIX))
2184 /* See if we have another one. */
2185 struct bfd_link_hash_entry *h = bfd_link_hash_lookup (info->hash,
2191 if (h != NULL && h->type != bfd_link_hash_undefined)
2193 /* How do we get the asymbol (or really: the filename) from h?
2194 h->u.def.section->owner is NULL. */
2195 ((*_bfd_error_handler)
2196 (_("%s: Error: multiple definition of `%s'; start of %s is set in a earlier linked file\n"),
2197 bfd_get_filename (abfd), *namep,
2198 *namep + strlen (MMIX_LOC_SECTION_START_SYMBOL_PREFIX)));
2199 bfd_set_error (bfd_error_bad_value);
2207 /* We consider symbols matching "L.*:[0-9]+" to be local symbols. */
2210 mmix_elf_is_local_label_name (bfd *abfd, const char *name)
2215 /* Also include the default local-label definition. */
2216 if (_bfd_elf_is_local_label_name (abfd, name))
2222 /* If there's no ":", or more than one, it's not a local symbol. */
2223 colpos = strchr (name, ':');
2224 if (colpos == NULL || strchr (colpos + 1, ':') != NULL)
2227 /* Check that there are remaining characters and that they are digits. */
2231 digits = strspn (colpos + 1, "0123456789");
2232 return digits != 0 && colpos[1 + digits] == 0;
2235 /* We get rid of the register section here. */
2238 mmix_elf_final_link (bfd *abfd, struct bfd_link_info *info)
2240 /* We never output a register section, though we create one for
2241 temporary measures. Check that nobody entered contents into it. */
2242 asection *reg_section;
2244 reg_section = bfd_get_section_by_name (abfd, MMIX_REG_SECTION_NAME);
2246 if (reg_section != NULL)
2248 /* FIXME: Pass error state gracefully. */
2249 if (bfd_get_section_flags (abfd, reg_section) & SEC_HAS_CONTENTS)
2250 _bfd_abort (__FILE__, __LINE__, _("Register section has contents\n"));
2252 /* Really remove the section, if it hasn't already been done. */
2253 if (!bfd_section_removed_from_list (abfd, reg_section))
2255 bfd_section_list_remove (abfd, reg_section);
2256 --abfd->section_count;
2260 if (! bfd_elf_final_link (abfd, info))
2263 /* Since this section is marked SEC_LINKER_CREATED, it isn't output by
2264 the regular linker machinery. We do it here, like other targets with
2265 special sections. */
2266 if (info->base_file != NULL)
2268 asection *greg_section
2269 = bfd_get_section_by_name ((bfd *) info->base_file,
2270 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
2271 if (!bfd_set_section_contents (abfd,
2272 greg_section->output_section,
2273 greg_section->contents,
2274 (file_ptr) greg_section->output_offset,
2275 greg_section->size))
2281 /* We need to include the maximum size of PUSHJ-stubs in the initial
2282 section size. This is expected to shrink during linker relaxation. */
2285 mmix_set_relaxable_size (bfd *abfd ATTRIBUTE_UNUSED,
2289 struct bfd_link_info *info = ptr;
2291 /* Make sure we only do this for section where we know we want this,
2292 otherwise we might end up resetting the size of COMMONs. */
2293 if (mmix_elf_section_data (sec)->pjs.n_pushj_relocs == 0)
2296 sec->rawsize = sec->size;
2297 sec->size += (mmix_elf_section_data (sec)->pjs.n_pushj_relocs
2298 * MAX_PUSHJ_STUB_SIZE);
2300 /* For use in relocatable link, we start with a max stubs size. See
2301 mmix_elf_relax_section. */
2302 if (info->relocatable && sec->output_section)
2303 mmix_elf_section_data (sec->output_section)->pjs.stubs_size_sum
2304 += (mmix_elf_section_data (sec)->pjs.n_pushj_relocs
2305 * MAX_PUSHJ_STUB_SIZE);
2308 /* Initialize stuff for the linker-generated GREGs to match
2309 R_MMIX_BASE_PLUS_OFFSET relocs seen by the linker. */
2312 _bfd_mmix_before_linker_allocation (bfd *abfd ATTRIBUTE_UNUSED,
2313 struct bfd_link_info *info)
2315 asection *bpo_gregs_section;
2316 bfd *bpo_greg_owner;
2317 struct bpo_greg_section_info *gregdata;
2321 size_t *bpo_reloc_indexes;
2324 /* Set the initial size of sections. */
2325 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2326 bfd_map_over_sections (ibfd, mmix_set_relaxable_size, info);
2328 /* The bpo_greg_owner bfd is supposed to have been set by
2329 mmix_elf_check_relocs when the first R_MMIX_BASE_PLUS_OFFSET is seen.
2330 If there is no such object, there was no R_MMIX_BASE_PLUS_OFFSET. */
2331 bpo_greg_owner = (bfd *) info->base_file;
2332 if (bpo_greg_owner == NULL)
2336 = bfd_get_section_by_name (bpo_greg_owner,
2337 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
2339 if (bpo_gregs_section == NULL)
2342 /* We use the target-data handle in the ELF section data. */
2343 gregdata = mmix_elf_section_data (bpo_gregs_section)->bpo.greg;
2344 if (gregdata == NULL)
2347 n_gregs = gregdata->n_bpo_relocs;
2348 gregdata->n_allocated_bpo_gregs = n_gregs;
2350 /* When this reaches zero during relaxation, all entries have been
2351 filled in and the size of the linker gregs can be calculated. */
2352 gregdata->n_remaining_bpo_relocs_this_relaxation_round = n_gregs;
2354 /* Set the zeroth-order estimate for the GREGs size. */
2355 gregs_size = n_gregs * 8;
2357 if (!bfd_set_section_size (bpo_greg_owner, bpo_gregs_section, gregs_size))
2360 /* Allocate and set up the GREG arrays. They're filled in at relaxation
2361 time. Note that we must use the max number ever noted for the array,
2362 since the index numbers were created before GC. */
2363 gregdata->reloc_request
2364 = bfd_zalloc (bpo_greg_owner,
2365 sizeof (struct bpo_reloc_request)
2366 * gregdata->n_max_bpo_relocs);
2368 gregdata->bpo_reloc_indexes
2370 = bfd_alloc (bpo_greg_owner,
2371 gregdata->n_max_bpo_relocs
2373 if (bpo_reloc_indexes == NULL)
2376 /* The default order is an identity mapping. */
2377 for (i = 0; i < gregdata->n_max_bpo_relocs; i++)
2379 bpo_reloc_indexes[i] = i;
2380 gregdata->reloc_request[i].bpo_reloc_no = i;
2386 /* Fill in contents in the linker allocated gregs. Everything is
2387 calculated at this point; we just move the contents into place here. */
2390 _bfd_mmix_after_linker_allocation (bfd *abfd ATTRIBUTE_UNUSED,
2391 struct bfd_link_info *link_info)
2393 asection *bpo_gregs_section;
2394 bfd *bpo_greg_owner;
2395 struct bpo_greg_section_info *gregdata;
2401 /* The bpo_greg_owner bfd is supposed to have been set by mmix_elf_check_relocs
2402 when the first R_MMIX_BASE_PLUS_OFFSET is seen. If there is no such
2403 object, there was no R_MMIX_BASE_PLUS_OFFSET. */
2404 bpo_greg_owner = (bfd *) link_info->base_file;
2405 if (bpo_greg_owner == NULL)
2409 = bfd_get_section_by_name (bpo_greg_owner,
2410 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
2412 /* This can't happen without DSO handling. When DSOs are handled
2413 without any R_MMIX_BASE_PLUS_OFFSET seen, there will be no such
2415 if (bpo_gregs_section == NULL)
2418 /* We use the target-data handle in the ELF section data. */
2420 gregdata = mmix_elf_section_data (bpo_gregs_section)->bpo.greg;
2421 if (gregdata == NULL)
2424 n_gregs = gregdata->n_allocated_bpo_gregs;
2426 bpo_gregs_section->contents
2427 = contents = bfd_alloc (bpo_greg_owner, bpo_gregs_section->size);
2428 if (contents == NULL)
2431 /* Sanity check: If these numbers mismatch, some relocation has not been
2432 accounted for and the rest of gregdata is probably inconsistent.
2433 It's a bug, but it's more helpful to identify it than segfaulting
2435 if (gregdata->n_remaining_bpo_relocs_this_relaxation_round
2436 != gregdata->n_bpo_relocs)
2438 (*_bfd_error_handler)
2439 (_("Internal inconsistency: remaining %u != max %u.\n\
2440 Please report this bug."),
2441 gregdata->n_remaining_bpo_relocs_this_relaxation_round,
2442 gregdata->n_bpo_relocs);
2446 for (lastreg = 255, i = 0, j = 0; j < n_gregs; i++)
2447 if (gregdata->reloc_request[i].regindex != lastreg)
2449 bfd_put_64 (bpo_greg_owner, gregdata->reloc_request[i].value,
2451 lastreg = gregdata->reloc_request[i].regindex;
2458 /* Sort valid relocs to come before non-valid relocs, then on increasing
2462 bpo_reloc_request_sort_fn (const void * p1, const void * p2)
2464 const struct bpo_reloc_request *r1 = (const struct bpo_reloc_request *) p1;
2465 const struct bpo_reloc_request *r2 = (const struct bpo_reloc_request *) p2;
2467 /* Primary function is validity; non-valid relocs sorted after valid
2469 if (r1->valid != r2->valid)
2470 return r2->valid - r1->valid;
2472 /* Then sort on value. Don't simplify and return just the difference of
2473 the values: the upper bits of the 64-bit value would be truncated on
2474 a host with 32-bit ints. */
2475 if (r1->value != r2->value)
2476 return r1->value > r2->value ? 1 : -1;
2478 /* As a last re-sort, use the relocation number, so we get a stable
2479 sort. The *addresses* aren't stable since items are swapped during
2480 sorting. It depends on the qsort implementation if this actually
2482 return r1->bpo_reloc_no > r2->bpo_reloc_no
2483 ? 1 : (r1->bpo_reloc_no < r2->bpo_reloc_no ? -1 : 0);
2486 /* For debug use only. Dumps the global register allocations resulting
2487 from base-plus-offset relocs. */
2490 mmix_dump_bpo_gregs (link_info, pf)
2491 struct bfd_link_info *link_info;
2492 bfd_error_handler_type pf;
2494 bfd *bpo_greg_owner;
2495 asection *bpo_gregs_section;
2496 struct bpo_greg_section_info *gregdata;
2499 if (link_info == NULL || link_info->base_file == NULL)
2502 bpo_greg_owner = (bfd *) link_info->base_file;
2505 = bfd_get_section_by_name (bpo_greg_owner,
2506 MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
2508 if (bpo_gregs_section == NULL)
2511 gregdata = mmix_elf_section_data (bpo_gregs_section)->bpo.greg;
2512 if (gregdata == NULL)
2516 pf = _bfd_error_handler;
2518 /* These format strings are not translated. They are for debug purposes
2519 only and never displayed to an end user. Should they escape, we
2520 surely want them in original. */
2521 (*pf) (" n_bpo_relocs: %u\n n_max_bpo_relocs: %u\n n_remain...round: %u\n\
2522 n_allocated_bpo_gregs: %u\n", gregdata->n_bpo_relocs,
2523 gregdata->n_max_bpo_relocs,
2524 gregdata->n_remaining_bpo_relocs_this_relaxation_round,
2525 gregdata->n_allocated_bpo_gregs);
2527 if (gregdata->reloc_request)
2528 for (i = 0; i < gregdata->n_max_bpo_relocs; i++)
2529 (*pf) ("%4u (%4u)/%4u#%u: 0x%08lx%08lx r: %3u o: %3u\n",
2531 (gregdata->bpo_reloc_indexes != NULL
2532 ? gregdata->bpo_reloc_indexes[i] : (size_t) -1),
2533 gregdata->reloc_request[i].bpo_reloc_no,
2534 gregdata->reloc_request[i].valid,
2536 (unsigned long) (gregdata->reloc_request[i].value >> 32),
2537 (unsigned long) gregdata->reloc_request[i].value,
2538 gregdata->reloc_request[i].regindex,
2539 gregdata->reloc_request[i].offset);
2542 /* This links all R_MMIX_BASE_PLUS_OFFSET relocs into a special array, and
2543 when the last such reloc is done, an index-array is sorted according to
2544 the values and iterated over to produce register numbers (indexed by 0
2545 from the first allocated register number) and offsets for use in real
2546 relocation. (N.B.: Relocatable runs are handled, not just punted.)
2548 PUSHJ stub accounting is also done here.
2550 Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */
2553 mmix_elf_relax_section (bfd *abfd,
2555 struct bfd_link_info *link_info,
2558 Elf_Internal_Shdr *symtab_hdr;
2559 Elf_Internal_Rela *internal_relocs;
2560 Elf_Internal_Rela *irel, *irelend;
2561 asection *bpo_gregs_section = NULL;
2562 struct bpo_greg_section_info *gregdata;
2563 struct bpo_reloc_section_info *bpodata
2564 = mmix_elf_section_data (sec)->bpo.reloc;
2565 /* The initialization is to quiet compiler warnings. The value is to
2566 spot a missing actual initialization. */
2567 size_t bpono = (size_t) -1;
2569 Elf_Internal_Sym *isymbuf = NULL;
2570 bfd_size_type size = sec->rawsize ? sec->rawsize : sec->size;
2572 mmix_elf_section_data (sec)->pjs.stubs_size_sum = 0;
2574 /* Assume nothing changes. */
2577 /* We don't have to do anything if this section does not have relocs, or
2578 if this is not a code section. */
2579 if ((sec->flags & SEC_RELOC) == 0
2580 || sec->reloc_count == 0
2581 || (sec->flags & SEC_CODE) == 0
2582 || (sec->flags & SEC_LINKER_CREATED) != 0
2583 /* If no R_MMIX_BASE_PLUS_OFFSET relocs and no PUSHJ-stub relocs,
2584 then nothing to do. */
2586 && mmix_elf_section_data (sec)->pjs.n_pushj_relocs == 0))
2589 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2591 if (bpodata != NULL)
2593 bpo_gregs_section = bpodata->bpo_greg_section;
2594 gregdata = mmix_elf_section_data (bpo_gregs_section)->bpo.greg;
2595 bpono = bpodata->first_base_plus_offset_reloc;
2600 /* Get a copy of the native relocations. */
2602 = _bfd_elf_link_read_relocs (abfd, sec, NULL,
2603 (Elf_Internal_Rela *) NULL,
2604 link_info->keep_memory);
2605 if (internal_relocs == NULL)
2608 /* Walk through them looking for relaxing opportunities. */
2609 irelend = internal_relocs + sec->reloc_count;
2610 for (irel = internal_relocs; irel < irelend; irel++)
2613 struct elf_link_hash_entry *h = NULL;
2615 /* We only process two relocs. */
2616 if (ELF64_R_TYPE (irel->r_info) != (int) R_MMIX_BASE_PLUS_OFFSET
2617 && ELF64_R_TYPE (irel->r_info) != (int) R_MMIX_PUSHJ_STUBBABLE)
2620 /* We process relocs in a distinctly different way when this is a
2621 relocatable link (for one, we don't look at symbols), so we avoid
2622 mixing its code with that for the "normal" relaxation. */
2623 if (link_info->relocatable)
2625 /* The only transformation in a relocatable link is to generate
2626 a full stub at the location of the stub calculated for the
2627 input section, if the relocated stub location, the end of the
2628 output section plus earlier stubs, cannot be reached. Thus
2629 relocatable linking can only lead to worse code, but it still
2631 if (ELF64_R_TYPE (irel->r_info) == R_MMIX_PUSHJ_STUBBABLE)
2633 /* If we can reach the end of the output-section and beyond
2634 any current stubs, then we don't need a stub for this
2635 reloc. The relaxed order of output stub allocation may
2636 not exactly match the straightforward order, so we always
2637 assume presence of output stubs, which will allow
2638 relaxation only on relocations indifferent to the
2639 presence of output stub allocations for other relocations
2640 and thus the order of output stub allocation. */
2641 if (bfd_check_overflow (complain_overflow_signed,
2644 bfd_arch_bits_per_address (abfd),
2645 /* Output-stub location. */
2646 sec->output_section->rawsize
2647 + (mmix_elf_section_data (sec
2649 ->pjs.stubs_size_sum)
2650 /* Location of this PUSHJ reloc. */
2651 - (sec->output_offset + irel->r_offset)
2652 /* Don't count *this* stub twice. */
2653 - (mmix_elf_section_data (sec)
2654 ->pjs.stub_size[pjsno]
2655 + MAX_PUSHJ_STUB_SIZE))
2657 mmix_elf_section_data (sec)->pjs.stub_size[pjsno] = 0;
2659 mmix_elf_section_data (sec)->pjs.stubs_size_sum
2660 += mmix_elf_section_data (sec)->pjs.stub_size[pjsno];
2668 /* Get the value of the symbol referred to by the reloc. */
2669 if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2671 /* A local symbol. */
2672 Elf_Internal_Sym *isym;
2675 /* Read this BFD's local symbols if we haven't already. */
2676 if (isymbuf == NULL)
2678 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2679 if (isymbuf == NULL)
2680 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2681 symtab_hdr->sh_info, 0,
2687 isym = isymbuf + ELF64_R_SYM (irel->r_info);
2688 if (isym->st_shndx == SHN_UNDEF)
2689 sym_sec = bfd_und_section_ptr;
2690 else if (isym->st_shndx == SHN_ABS)
2691 sym_sec = bfd_abs_section_ptr;
2692 else if (isym->st_shndx == SHN_COMMON)
2693 sym_sec = bfd_com_section_ptr;
2695 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2696 symval = (isym->st_value
2697 + sym_sec->output_section->vma
2698 + sym_sec->output_offset);
2704 /* An external symbol. */
2705 indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2706 h = elf_sym_hashes (abfd)[indx];
2707 BFD_ASSERT (h != NULL);
2708 if (h->root.type != bfd_link_hash_defined
2709 && h->root.type != bfd_link_hash_defweak)
2711 /* This appears to be a reference to an undefined symbol. Just
2712 ignore it--it will be caught by the regular reloc processing.
2713 We need to keep BPO reloc accounting consistent, though
2714 else we'll abort instead of emitting an error message. */
2715 if (ELF64_R_TYPE (irel->r_info) == R_MMIX_BASE_PLUS_OFFSET
2716 && gregdata != NULL)
2718 gregdata->n_remaining_bpo_relocs_this_relaxation_round--;
2724 symval = (h->root.u.def.value
2725 + h->root.u.def.section->output_section->vma
2726 + h->root.u.def.section->output_offset);
2729 if (ELF64_R_TYPE (irel->r_info) == (int) R_MMIX_PUSHJ_STUBBABLE)
2731 bfd_vma value = symval + irel->r_addend;
2733 = (sec->output_section->vma
2734 + sec->output_offset
2737 = (sec->output_section->vma
2738 + sec->output_offset
2740 + mmix_elf_section_data (sec)->pjs.stubs_size_sum);
2742 if ((value & 3) == 0
2743 && bfd_check_overflow (complain_overflow_signed,
2746 bfd_arch_bits_per_address (abfd),
2749 ? mmix_elf_section_data (sec)
2750 ->pjs.stub_size[pjsno]
2753 /* If the reloc fits, no stub is needed. */
2754 mmix_elf_section_data (sec)->pjs.stub_size[pjsno] = 0;
2756 /* Maybe we can get away with just a JMP insn? */
2757 if ((value & 3) == 0
2758 && bfd_check_overflow (complain_overflow_signed,
2761 bfd_arch_bits_per_address (abfd),
2764 ? mmix_elf_section_data (sec)
2765 ->pjs.stub_size[pjsno] - 4
2768 /* Yep, account for a stub consisting of a single JMP insn. */
2769 mmix_elf_section_data (sec)->pjs.stub_size[pjsno] = 4;
2771 /* Nope, go for the full insn stub. It doesn't seem useful to
2772 emit the intermediate sizes; those will only be useful for
2773 a >64M program assuming contiguous code. */
2774 mmix_elf_section_data (sec)->pjs.stub_size[pjsno]
2775 = MAX_PUSHJ_STUB_SIZE;
2777 mmix_elf_section_data (sec)->pjs.stubs_size_sum
2778 += mmix_elf_section_data (sec)->pjs.stub_size[pjsno];
2783 /* We're looking at a R_MMIX_BASE_PLUS_OFFSET reloc. */
2785 gregdata->reloc_request[gregdata->bpo_reloc_indexes[bpono]].value
2786 = symval + irel->r_addend;
2787 gregdata->reloc_request[gregdata->bpo_reloc_indexes[bpono++]].valid = TRUE;
2788 gregdata->n_remaining_bpo_relocs_this_relaxation_round--;
2791 /* Check if that was the last BPO-reloc. If so, sort the values and
2792 calculate how many registers we need to cover them. Set the size of
2793 the linker gregs, and if the number of registers changed, indicate
2794 that we need to relax some more because we have more work to do. */
2795 if (gregdata != NULL
2796 && gregdata->n_remaining_bpo_relocs_this_relaxation_round == 0)
2802 /* First, reset the remaining relocs for the next round. */
2803 gregdata->n_remaining_bpo_relocs_this_relaxation_round
2804 = gregdata->n_bpo_relocs;
2806 qsort (gregdata->reloc_request,
2807 gregdata->n_max_bpo_relocs,
2808 sizeof (struct bpo_reloc_request),
2809 bpo_reloc_request_sort_fn);
2811 /* Recalculate indexes. When we find a change (however unlikely
2812 after the initial iteration), we know we need to relax again,
2813 since items in the GREG-array are sorted by increasing value and
2814 stored in the relaxation phase. */
2815 for (i = 0; i < gregdata->n_max_bpo_relocs; i++)
2816 if (gregdata->bpo_reloc_indexes[gregdata->reloc_request[i].bpo_reloc_no]
2819 gregdata->bpo_reloc_indexes[gregdata->reloc_request[i].bpo_reloc_no]
2824 /* Allocate register numbers (indexing from 0). Stop at the first
2826 for (i = 0, regindex = 0, prev_base = gregdata->reloc_request[0].value;
2827 i < gregdata->n_bpo_relocs;
2830 if (gregdata->reloc_request[i].value > prev_base + 255)
2833 prev_base = gregdata->reloc_request[i].value;
2835 gregdata->reloc_request[i].regindex = regindex;
2836 gregdata->reloc_request[i].offset
2837 = gregdata->reloc_request[i].value - prev_base;
2840 /* If it's not the same as the last time, we need to relax again,
2841 because the size of the section has changed. I'm not sure we
2842 actually need to do any adjustments since the shrinking happens
2843 at the start of this section, but better safe than sorry. */
2844 if (gregdata->n_allocated_bpo_gregs != regindex + 1)
2846 gregdata->n_allocated_bpo_gregs = regindex + 1;
2850 bpo_gregs_section->size = (regindex + 1) * 8;
2853 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
2855 if (! link_info->keep_memory)
2859 /* Cache the symbols for elf_link_input_bfd. */
2860 symtab_hdr->contents = (unsigned char *) isymbuf;
2864 if (internal_relocs != NULL
2865 && elf_section_data (sec)->relocs != internal_relocs)
2866 free (internal_relocs);
2868 if (sec->size < size + mmix_elf_section_data (sec)->pjs.stubs_size_sum)
2871 if (sec->size > size + mmix_elf_section_data (sec)->pjs.stubs_size_sum)
2873 sec->size = size + mmix_elf_section_data (sec)->pjs.stubs_size_sum;
2880 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
2882 if (internal_relocs != NULL
2883 && elf_section_data (sec)->relocs != internal_relocs)
2884 free (internal_relocs);
2888 #define ELF_ARCH bfd_arch_mmix
2889 #define ELF_MACHINE_CODE EM_MMIX
2891 /* According to mmix-doc page 36 (paragraph 45), this should be (1LL << 48LL).
2892 However, that's too much for something somewhere in the linker part of
2893 BFD; perhaps the start-address has to be a non-zero multiple of this
2894 number, or larger than this number. The symptom is that the linker
2895 complains: "warning: allocated section `.text' not in segment". We
2896 settle for 64k; the page-size used in examples is 8k.
2897 #define ELF_MAXPAGESIZE 0x10000
2899 Unfortunately, this causes excessive padding in the supposedly small
2900 for-education programs that are the expected usage (where people would
2901 inspect output). We stick to 256 bytes just to have *some* default
2903 #define ELF_MAXPAGESIZE 0x100
2905 #define TARGET_BIG_SYM bfd_elf64_mmix_vec
2906 #define TARGET_BIG_NAME "elf64-mmix"
2908 #define elf_info_to_howto_rel NULL
2909 #define elf_info_to_howto mmix_info_to_howto_rela
2910 #define elf_backend_relocate_section mmix_elf_relocate_section
2911 #define elf_backend_gc_mark_hook mmix_elf_gc_mark_hook
2912 #define elf_backend_gc_sweep_hook mmix_elf_gc_sweep_hook
2914 #define elf_backend_link_output_symbol_hook \
2915 mmix_elf_link_output_symbol_hook
2916 #define elf_backend_add_symbol_hook mmix_elf_add_symbol_hook
2918 #define elf_backend_check_relocs mmix_elf_check_relocs
2919 #define elf_backend_symbol_processing mmix_elf_symbol_processing
2920 #define elf_backend_omit_section_dynsym \
2921 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2923 #define bfd_elf64_bfd_is_local_label_name \
2924 mmix_elf_is_local_label_name
2926 #define elf_backend_may_use_rel_p 0
2927 #define elf_backend_may_use_rela_p 1
2928 #define elf_backend_default_use_rela_p 1
2930 #define elf_backend_can_gc_sections 1
2931 #define elf_backend_section_from_bfd_section \
2932 mmix_elf_section_from_bfd_section
2934 #define bfd_elf64_new_section_hook mmix_elf_new_section_hook
2935 #define bfd_elf64_bfd_final_link mmix_elf_final_link
2936 #define bfd_elf64_bfd_relax_section mmix_elf_relax_section
2938 #include "elf64-target.h"
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