1 /* Xilinx MicroBlaze-specific support for 32-bit ELF
3 Copyright (C) 2009-2020 Free Software Foundation, Inc.
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
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
30 #include "elf/microblaze.h"
33 #define USE_RELA /* Only USE_REL is actually significant, but this is
34 here are a reminder... */
35 #define INST_WORD_SIZE 4
37 static int ro_small_data_pointer
= 0;
38 static int rw_small_data_pointer
= 0;
40 static reloc_howto_type
* microblaze_elf_howto_table
[(int) R_MICROBLAZE_max
];
42 static reloc_howto_type microblaze_elf_howto_raw
[] =
44 /* This reloc does nothing. */
45 HOWTO (R_MICROBLAZE_NONE
, /* Type. */
47 3, /* Size (0 = byte, 1 = short, 2 = long). */
49 FALSE
, /* PC_relative. */
51 complain_overflow_dont
, /* Complain on overflow. */
52 NULL
, /* Special Function. */
53 "R_MICROBLAZE_NONE", /* Name. */
54 FALSE
, /* Partial Inplace. */
57 FALSE
), /* PC relative offset? */
59 /* A standard 32 bit relocation. */
60 HOWTO (R_MICROBLAZE_32
, /* Type. */
62 2, /* Size (0 = byte, 1 = short, 2 = long). */
64 FALSE
, /* PC_relative. */
66 complain_overflow_bitfield
, /* Complain on overflow. */
67 bfd_elf_generic_reloc
,/* Special Function. */
68 "R_MICROBLAZE_32", /* Name. */
69 FALSE
, /* Partial Inplace. */
71 0xffffffff, /* Dest Mask. */
72 FALSE
), /* PC relative offset? */
74 /* A standard PCREL 32 bit relocation. */
75 HOWTO (R_MICROBLAZE_32_PCREL
,/* Type. */
77 2, /* Size (0 = byte, 1 = short, 2 = long). */
79 TRUE
, /* PC_relative. */
81 complain_overflow_bitfield
, /* Complain on overflow. */
82 bfd_elf_generic_reloc
,/* Special Function. */
83 "R_MICROBLAZE_32_PCREL", /* Name. */
84 TRUE
, /* Partial Inplace. */
86 0xffffffff, /* Dest Mask. */
87 TRUE
), /* PC relative offset? */
89 /* A 64 bit PCREL relocation. Table-entry not really used. */
90 HOWTO (R_MICROBLAZE_64_PCREL
,/* Type. */
92 2, /* Size (0 = byte, 1 = short, 2 = long). */
94 TRUE
, /* PC_relative. */
96 complain_overflow_dont
, /* Complain on overflow. */
97 bfd_elf_generic_reloc
,/* Special Function. */
98 "R_MICROBLAZE_64_PCREL", /* Name. */
99 FALSE
, /* Partial Inplace. */
100 0, /* Source Mask. */
101 0x0000ffff, /* Dest Mask. */
102 TRUE
), /* PC relative offset? */
104 /* The low half of a PCREL 32 bit relocation. */
105 HOWTO (R_MICROBLAZE_32_PCREL_LO
, /* Type. */
107 2, /* Size (0 = byte, 1 = short, 2 = long). */
109 TRUE
, /* PC_relative. */
111 complain_overflow_signed
, /* Complain on overflow. */
112 bfd_elf_generic_reloc
, /* Special Function. */
113 "R_MICROBLAZE_32_PCREL_LO", /* Name. */
114 FALSE
, /* Partial Inplace. */
115 0, /* Source Mask. */
116 0x0000ffff, /* Dest Mask. */
117 TRUE
), /* PC relative offset? */
119 /* A 64 bit relocation. Table entry not really used. */
120 HOWTO (R_MICROBLAZE_64
, /* Type. */
122 2, /* Size (0 = byte, 1 = short, 2 = long). */
124 FALSE
, /* PC_relative. */
126 complain_overflow_dont
, /* Complain on overflow. */
127 bfd_elf_generic_reloc
,/* Special Function. */
128 "R_MICROBLAZE_64", /* Name. */
129 FALSE
, /* Partial Inplace. */
130 0, /* Source Mask. */
131 0x0000ffff, /* Dest Mask. */
132 FALSE
), /* PC relative offset? */
134 /* The low half of a 32 bit relocation. */
135 HOWTO (R_MICROBLAZE_32_LO
, /* Type. */
137 2, /* Size (0 = byte, 1 = short, 2 = long). */
139 FALSE
, /* PC_relative. */
141 complain_overflow_signed
, /* Complain on overflow. */
142 bfd_elf_generic_reloc
,/* Special Function. */
143 "R_MICROBLAZE_32_LO", /* Name. */
144 FALSE
, /* Partial Inplace. */
145 0, /* Source Mask. */
146 0x0000ffff, /* Dest Mask. */
147 FALSE
), /* PC relative offset? */
149 /* Read-only small data section relocation. */
150 HOWTO (R_MICROBLAZE_SRO32
, /* Type. */
152 2, /* Size (0 = byte, 1 = short, 2 = long). */
154 FALSE
, /* PC_relative. */
156 complain_overflow_bitfield
, /* Complain on overflow. */
157 bfd_elf_generic_reloc
,/* Special Function. */
158 "R_MICROBLAZE_SRO32", /* Name. */
159 FALSE
, /* Partial Inplace. */
160 0, /* Source Mask. */
161 0x0000ffff, /* Dest Mask. */
162 FALSE
), /* PC relative offset? */
164 /* Read-write small data area relocation. */
165 HOWTO (R_MICROBLAZE_SRW32
, /* Type. */
167 2, /* Size (0 = byte, 1 = short, 2 = long). */
169 FALSE
, /* PC_relative. */
171 complain_overflow_bitfield
, /* Complain on overflow. */
172 bfd_elf_generic_reloc
,/* Special Function. */
173 "R_MICROBLAZE_SRW32", /* Name. */
174 FALSE
, /* Partial Inplace. */
175 0, /* Source Mask. */
176 0x0000ffff, /* Dest Mask. */
177 FALSE
), /* PC relative offset? */
179 /* This reloc does nothing. Used for relaxation. */
180 HOWTO (R_MICROBLAZE_64_NONE
, /* Type. */
182 3, /* Size (0 = byte, 1 = short, 2 = long). */
184 TRUE
, /* PC_relative. */
186 complain_overflow_dont
, /* Complain on overflow. */
187 NULL
, /* Special Function. */
188 "R_MICROBLAZE_64_NONE",/* Name. */
189 FALSE
, /* Partial Inplace. */
190 0, /* Source Mask. */
192 FALSE
), /* PC relative offset? */
194 /* Symbol Op Symbol relocation. */
195 HOWTO (R_MICROBLAZE_32_SYM_OP_SYM
, /* Type. */
197 2, /* Size (0 = byte, 1 = short, 2 = long). */
199 FALSE
, /* PC_relative. */
201 complain_overflow_bitfield
, /* Complain on overflow. */
202 bfd_elf_generic_reloc
,/* Special Function. */
203 "R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */
204 FALSE
, /* Partial Inplace. */
205 0, /* Source Mask. */
206 0xffffffff, /* Dest Mask. */
207 FALSE
), /* PC relative offset? */
209 /* GNU extension to record C++ vtable hierarchy. */
210 HOWTO (R_MICROBLAZE_GNU_VTINHERIT
, /* Type. */
212 2, /* Size (0 = byte, 1 = short, 2 = long). */
214 FALSE
, /* PC_relative. */
216 complain_overflow_dont
,/* Complain on overflow. */
217 NULL
, /* Special Function. */
218 "R_MICROBLAZE_GNU_VTINHERIT", /* Name. */
219 FALSE
, /* Partial Inplace. */
220 0, /* Source Mask. */
222 FALSE
), /* PC relative offset? */
224 /* GNU extension to record C++ vtable member usage. */
225 HOWTO (R_MICROBLAZE_GNU_VTENTRY
, /* Type. */
227 2, /* Size (0 = byte, 1 = short, 2 = long). */
229 FALSE
, /* PC_relative. */
231 complain_overflow_dont
,/* Complain on overflow. */
232 _bfd_elf_rel_vtable_reloc_fn
, /* Special Function. */
233 "R_MICROBLAZE_GNU_VTENTRY", /* Name. */
234 FALSE
, /* Partial Inplace. */
235 0, /* Source Mask. */
237 FALSE
), /* PC relative offset? */
239 /* A 64 bit GOTPC relocation. Table-entry not really used. */
240 HOWTO (R_MICROBLAZE_GOTPC_64
, /* Type. */
242 2, /* Size (0 = byte, 1 = short, 2 = long). */
244 TRUE
, /* PC_relative. */
246 complain_overflow_dont
, /* Complain on overflow. */
247 bfd_elf_generic_reloc
, /* Special Function. */
248 "R_MICROBLAZE_GOTPC_64", /* Name. */
249 FALSE
, /* Partial Inplace. */
250 0, /* Source Mask. */
251 0x0000ffff, /* Dest Mask. */
252 TRUE
), /* PC relative offset? */
254 /* A 64 bit TEXTPCREL relocation. Table-entry not really used. */
255 HOWTO (R_MICROBLAZE_TEXTPCREL_64
, /* Type. */
257 2, /* Size (0 = byte, 1 = short, 2 = long). */
259 TRUE
, /* PC_relative. */
261 complain_overflow_dont
, /* Complain on overflow. */
262 bfd_elf_generic_reloc
, /* Special Function. */
263 "R_MICROBLAZE_TEXTPCREL_64", /* Name. */
264 FALSE
, /* Partial Inplace. */
265 0, /* Source Mask. */
266 0x0000ffff, /* Dest Mask. */
267 TRUE
), /* PC relative offset? */
269 /* A 64 bit GOT relocation. Table-entry not really used. */
270 HOWTO (R_MICROBLAZE_GOT_64
, /* Type. */
272 2, /* Size (0 = byte, 1 = short, 2 = long). */
274 FALSE
, /* PC_relative. */
276 complain_overflow_dont
, /* Complain on overflow. */
277 bfd_elf_generic_reloc
,/* Special Function. */
278 "R_MICROBLAZE_GOT_64",/* Name. */
279 FALSE
, /* Partial Inplace. */
280 0, /* Source Mask. */
281 0x0000ffff, /* Dest Mask. */
282 FALSE
), /* PC relative offset? */
284 /* A 64 bit TEXTREL relocation. Table-entry not really used. */
285 HOWTO (R_MICROBLAZE_TEXTREL_64
, /* Type. */
287 2, /* Size (0 = byte, 1 = short, 2 = long). */
289 FALSE
, /* PC_relative. */
291 complain_overflow_dont
, /* Complain on overflow. */
292 bfd_elf_generic_reloc
,/* Special Function. */
293 "R_MICROBLAZE_TEXTREL_64",/* Name. */
294 FALSE
, /* Partial Inplace. */
295 0, /* Source Mask. */
296 0x0000ffff, /* Dest Mask. */
297 FALSE
), /* PC relative offset? */
299 /* A 64 bit PLT relocation. Table-entry not really used. */
300 HOWTO (R_MICROBLAZE_PLT_64
, /* Type. */
302 2, /* Size (0 = byte, 1 = short, 2 = long). */
304 TRUE
, /* PC_relative. */
306 complain_overflow_dont
, /* Complain on overflow. */
307 bfd_elf_generic_reloc
,/* Special Function. */
308 "R_MICROBLAZE_PLT_64",/* Name. */
309 FALSE
, /* Partial Inplace. */
310 0, /* Source Mask. */
311 0x0000ffff, /* Dest Mask. */
312 TRUE
), /* PC relative offset? */
314 /* Table-entry not really used. */
315 HOWTO (R_MICROBLAZE_REL
, /* Type. */
317 2, /* Size (0 = byte, 1 = short, 2 = long). */
319 TRUE
, /* PC_relative. */
321 complain_overflow_dont
, /* Complain on overflow. */
322 bfd_elf_generic_reloc
,/* Special Function. */
323 "R_MICROBLAZE_REL", /* Name. */
324 FALSE
, /* Partial Inplace. */
325 0, /* Source Mask. */
326 0x0000ffff, /* Dest Mask. */
327 TRUE
), /* PC relative offset? */
329 /* Table-entry not really used. */
330 HOWTO (R_MICROBLAZE_JUMP_SLOT
,/* Type. */
332 2, /* Size (0 = byte, 1 = short, 2 = long). */
334 TRUE
, /* PC_relative. */
336 complain_overflow_dont
, /* Complain on overflow. */
337 bfd_elf_generic_reloc
,/* Special Function. */
338 "R_MICROBLAZE_JUMP_SLOT", /* Name. */
339 FALSE
, /* Partial Inplace. */
340 0, /* Source Mask. */
341 0x0000ffff, /* Dest Mask. */
342 TRUE
), /* PC relative offset? */
344 /* Table-entry not really used. */
345 HOWTO (R_MICROBLAZE_GLOB_DAT
,/* Type. */
347 2, /* Size (0 = byte, 1 = short, 2 = long). */
349 TRUE
, /* PC_relative. */
351 complain_overflow_dont
, /* Complain on overflow. */
352 bfd_elf_generic_reloc
,/* Special Function. */
353 "R_MICROBLAZE_GLOB_DAT", /* Name. */
354 FALSE
, /* Partial Inplace. */
355 0, /* Source Mask. */
356 0x0000ffff, /* Dest Mask. */
357 TRUE
), /* PC relative offset? */
359 /* A 64 bit GOT relative relocation. Table-entry not really used. */
360 HOWTO (R_MICROBLAZE_GOTOFF_64
, /* Type. */
362 2, /* Size (0 = byte, 1 = short, 2 = long). */
364 FALSE
, /* PC_relative. */
366 complain_overflow_dont
, /* Complain on overflow. */
367 bfd_elf_generic_reloc
,/* Special Function. */
368 "R_MICROBLAZE_GOTOFF_64", /* Name. */
369 FALSE
, /* Partial Inplace. */
370 0, /* Source Mask. */
371 0x0000ffff, /* Dest Mask. */
372 FALSE
), /* PC relative offset? */
374 /* A 32 bit GOT relative relocation. Table-entry not really used. */
375 HOWTO (R_MICROBLAZE_GOTOFF_32
, /* Type. */
377 2, /* Size (0 = byte, 1 = short, 2 = long). */
379 FALSE
, /* PC_relative. */
381 complain_overflow_dont
, /* Complain on overflow. */
382 bfd_elf_generic_reloc
, /* Special Function. */
383 "R_MICROBLAZE_GOTOFF_32", /* Name. */
384 FALSE
, /* Partial Inplace. */
385 0, /* Source Mask. */
386 0x0000ffff, /* Dest Mask. */
387 FALSE
), /* PC relative offset? */
389 /* COPY relocation. Table-entry not really used. */
390 HOWTO (R_MICROBLAZE_COPY
, /* Type. */
392 2, /* Size (0 = byte, 1 = short, 2 = long). */
394 FALSE
, /* PC_relative. */
396 complain_overflow_dont
, /* Complain on overflow. */
397 bfd_elf_generic_reloc
,/* Special Function. */
398 "R_MICROBLAZE_COPY", /* Name. */
399 FALSE
, /* Partial Inplace. */
400 0, /* Source Mask. */
401 0x0000ffff, /* Dest Mask. */
402 FALSE
), /* PC relative offset? */
404 /* Marker relocs for TLS. */
405 HOWTO (R_MICROBLAZE_TLS
,
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE
, /* pc_relative */
411 complain_overflow_dont
, /* complain_on_overflow */
412 bfd_elf_generic_reloc
, /* special_function */
413 "R_MICROBLAZE_TLS", /* name */
414 FALSE
, /* partial_inplace */
416 0x0000ffff, /* dst_mask */
417 FALSE
), /* pcrel_offset */
419 HOWTO (R_MICROBLAZE_TLSGD
,
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_dont
, /* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_MICROBLAZE_TLSGD", /* name */
428 FALSE
, /* partial_inplace */
430 0x0000ffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 HOWTO (R_MICROBLAZE_TLSLD
,
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE
, /* pc_relative */
439 complain_overflow_dont
, /* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 "R_MICROBLAZE_TLSLD", /* name */
442 FALSE
, /* partial_inplace */
444 0x0000ffff, /* dst_mask */
445 FALSE
), /* pcrel_offset */
447 /* Computes the load module index of the load module that contains the
448 definition of its TLS sym. */
449 HOWTO (R_MICROBLAZE_TLSDTPMOD32
,
451 2, /* size (0 = byte, 1 = short, 2 = long) */
453 FALSE
, /* pc_relative */
455 complain_overflow_dont
, /* complain_on_overflow */
456 bfd_elf_generic_reloc
, /* special_function */
457 "R_MICROBLAZE_TLSDTPMOD32", /* name */
458 FALSE
, /* partial_inplace */
460 0x0000ffff, /* dst_mask */
461 FALSE
), /* pcrel_offset */
463 /* Computes a dtv-relative displacement, the difference between the value
464 of sym+add and the base address of the thread-local storage block that
465 contains the definition of sym, minus 0x8000. Used for initializing GOT */
466 HOWTO (R_MICROBLAZE_TLSDTPREL32
,
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE
, /* pc_relative */
472 complain_overflow_dont
, /* complain_on_overflow */
473 bfd_elf_generic_reloc
, /* special_function */
474 "R_MICROBLAZE_TLSDTPREL32", /* name */
475 FALSE
, /* partial_inplace */
477 0x0000ffff, /* dst_mask */
478 FALSE
), /* pcrel_offset */
480 /* Computes a dtv-relative displacement, the difference between the value
481 of sym+add and the base address of the thread-local storage block that
482 contains the definition of sym, minus 0x8000. */
483 HOWTO (R_MICROBLAZE_TLSDTPREL64
,
485 2, /* size (0 = byte, 1 = short, 2 = long) */
487 FALSE
, /* pc_relative */
489 complain_overflow_dont
, /* complain_on_overflow */
490 bfd_elf_generic_reloc
, /* special_function */
491 "R_MICROBLAZE_TLSDTPREL64", /* name */
492 FALSE
, /* partial_inplace */
494 0x0000ffff, /* dst_mask */
495 FALSE
), /* pcrel_offset */
497 /* Computes a tp-relative displacement, the difference between the value of
498 sym+add and the value of the thread pointer (r13). */
499 HOWTO (R_MICROBLAZE_TLSGOTTPREL32
,
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE
, /* pc_relative */
505 complain_overflow_dont
, /* complain_on_overflow */
506 bfd_elf_generic_reloc
, /* special_function */
507 "R_MICROBLAZE_TLSGOTTPREL32", /* name */
508 FALSE
, /* partial_inplace */
510 0x0000ffff, /* dst_mask */
511 FALSE
), /* pcrel_offset */
513 /* Computes a tp-relative displacement, the difference between the value of
514 sym+add and the value of the thread pointer (r13). */
515 HOWTO (R_MICROBLAZE_TLSTPREL32
,
517 2, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE
, /* pc_relative */
521 complain_overflow_dont
, /* complain_on_overflow */
522 bfd_elf_generic_reloc
, /* special_function */
523 "R_MICROBLAZE_TLSTPREL32", /* name */
524 FALSE
, /* partial_inplace */
526 0x0000ffff, /* dst_mask */
527 FALSE
), /* pcrel_offset */
532 #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
535 /* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */
538 microblaze_elf_howto_init (void)
542 for (i
= NUM_ELEM (microblaze_elf_howto_raw
); i
--;)
546 type
= microblaze_elf_howto_raw
[i
].type
;
548 BFD_ASSERT (type
< NUM_ELEM (microblaze_elf_howto_table
));
550 microblaze_elf_howto_table
[type
] = & microblaze_elf_howto_raw
[i
];
554 static reloc_howto_type
*
555 microblaze_elf_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
556 bfd_reloc_code_real_type code
)
558 enum elf_microblaze_reloc_type microblaze_reloc
= R_MICROBLAZE_NONE
;
563 microblaze_reloc
= R_MICROBLAZE_NONE
;
565 case BFD_RELOC_MICROBLAZE_64_NONE
:
566 microblaze_reloc
= R_MICROBLAZE_64_NONE
;
569 microblaze_reloc
= R_MICROBLAZE_32
;
571 /* RVA is treated the same as 32 */
573 microblaze_reloc
= R_MICROBLAZE_32
;
575 case BFD_RELOC_32_PCREL
:
576 microblaze_reloc
= R_MICROBLAZE_32_PCREL
;
578 case BFD_RELOC_64_PCREL
:
579 microblaze_reloc
= R_MICROBLAZE_64_PCREL
;
581 case BFD_RELOC_MICROBLAZE_32_LO_PCREL
:
582 microblaze_reloc
= R_MICROBLAZE_32_PCREL_LO
;
585 microblaze_reloc
= R_MICROBLAZE_64
;
587 case BFD_RELOC_MICROBLAZE_32_LO
:
588 microblaze_reloc
= R_MICROBLAZE_32_LO
;
590 case BFD_RELOC_MICROBLAZE_32_ROSDA
:
591 microblaze_reloc
= R_MICROBLAZE_SRO32
;
593 case BFD_RELOC_MICROBLAZE_32_RWSDA
:
594 microblaze_reloc
= R_MICROBLAZE_SRW32
;
596 case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM
:
597 microblaze_reloc
= R_MICROBLAZE_32_SYM_OP_SYM
;
599 case BFD_RELOC_VTABLE_INHERIT
:
600 microblaze_reloc
= R_MICROBLAZE_GNU_VTINHERIT
;
602 case BFD_RELOC_VTABLE_ENTRY
:
603 microblaze_reloc
= R_MICROBLAZE_GNU_VTENTRY
;
605 case BFD_RELOC_MICROBLAZE_64_GOTPC
:
606 microblaze_reloc
= R_MICROBLAZE_GOTPC_64
;
608 case BFD_RELOC_MICROBLAZE_64_GOT
:
609 microblaze_reloc
= R_MICROBLAZE_GOT_64
;
611 case BFD_RELOC_MICROBLAZE_64_TEXTPCREL
:
612 microblaze_reloc
= R_MICROBLAZE_TEXTPCREL_64
;
614 case BFD_RELOC_MICROBLAZE_64_TEXTREL
:
615 microblaze_reloc
= R_MICROBLAZE_TEXTREL_64
;
617 case BFD_RELOC_MICROBLAZE_64_PLT
:
618 microblaze_reloc
= R_MICROBLAZE_PLT_64
;
620 case BFD_RELOC_MICROBLAZE_64_GOTOFF
:
621 microblaze_reloc
= R_MICROBLAZE_GOTOFF_64
;
623 case BFD_RELOC_MICROBLAZE_32_GOTOFF
:
624 microblaze_reloc
= R_MICROBLAZE_GOTOFF_32
;
626 case BFD_RELOC_MICROBLAZE_64_TLSGD
:
627 microblaze_reloc
= R_MICROBLAZE_TLSGD
;
629 case BFD_RELOC_MICROBLAZE_64_TLSLD
:
630 microblaze_reloc
= R_MICROBLAZE_TLSLD
;
632 case BFD_RELOC_MICROBLAZE_32_TLSDTPREL
:
633 microblaze_reloc
= R_MICROBLAZE_TLSDTPREL32
;
635 case BFD_RELOC_MICROBLAZE_64_TLSDTPREL
:
636 microblaze_reloc
= R_MICROBLAZE_TLSDTPREL64
;
638 case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD
:
639 microblaze_reloc
= R_MICROBLAZE_TLSDTPMOD32
;
641 case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL
:
642 microblaze_reloc
= R_MICROBLAZE_TLSGOTTPREL32
;
644 case BFD_RELOC_MICROBLAZE_64_TLSTPREL
:
645 microblaze_reloc
= R_MICROBLAZE_TLSTPREL32
;
647 case BFD_RELOC_MICROBLAZE_COPY
:
648 microblaze_reloc
= R_MICROBLAZE_COPY
;
651 return (reloc_howto_type
*) NULL
;
654 if (!microblaze_elf_howto_table
[R_MICROBLAZE_32
])
655 /* Initialize howto table if needed. */
656 microblaze_elf_howto_init ();
658 return microblaze_elf_howto_table
[(int) microblaze_reloc
];
661 static reloc_howto_type
*
662 microblaze_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
667 for (i
= 0; i
< NUM_ELEM (microblaze_elf_howto_raw
); i
++)
668 if (microblaze_elf_howto_raw
[i
].name
!= NULL
669 && strcasecmp (microblaze_elf_howto_raw
[i
].name
, r_name
) == 0)
670 return µblaze_elf_howto_raw
[i
];
675 /* Set the howto pointer for a RCE ELF reloc. */
678 microblaze_elf_info_to_howto (bfd
* abfd
,
680 Elf_Internal_Rela
* dst
)
684 if (!microblaze_elf_howto_table
[R_MICROBLAZE_32
])
685 /* Initialize howto table if needed. */
686 microblaze_elf_howto_init ();
688 r_type
= ELF32_R_TYPE (dst
->r_info
);
689 if (r_type
>= R_MICROBLAZE_max
)
691 /* xgettext:c-format */
692 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
694 bfd_set_error (bfd_error_bad_value
);
698 cache_ptr
->howto
= microblaze_elf_howto_table
[r_type
];
702 /* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */
705 microblaze_elf_is_local_label_name (bfd
*abfd
, const char *name
)
707 if (name
[0] == 'L' && name
[1] == '.')
710 if (name
[0] == '$' && name
[1] == 'L')
713 /* With gcc, the labels go back to starting with '.', so we accept
714 the generic ELF local label syntax as well. */
715 return _bfd_elf_is_local_label_name (abfd
, name
);
718 /* ELF linker hash entry. */
720 struct elf32_mb_link_hash_entry
722 struct elf_link_hash_entry elf
;
724 /* TLS Reference Types for the symbol; Updated by check_relocs */
725 #define TLS_GD 1 /* GD reloc. */
726 #define TLS_LD 2 /* LD reloc. */
727 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
728 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
729 #define TLS_TLS 16 /* Any TLS reloc. */
730 unsigned char tls_mask
;
734 #define IS_TLS_GD(x) (x == (TLS_TLS | TLS_GD))
735 #define IS_TLS_LD(x) (x == (TLS_TLS | TLS_LD))
736 #define IS_TLS_DTPREL(x) (x == (TLS_TLS | TLS_DTPREL))
737 #define IS_TLS_NONE(x) (x == 0)
739 #define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent))
741 /* ELF linker hash table. */
743 struct elf32_mb_link_hash_table
745 struct elf_link_hash_table elf
;
747 /* Small local sym to section mapping cache. */
748 struct sym_cache sym_sec
;
750 /* TLS Local Dynamic GOT Entry */
752 bfd_signed_vma refcount
;
757 /* Nonzero if this section has TLS related relocations. */
758 #define has_tls_reloc sec_flg0
760 /* Get the ELF linker hash table from a link_info structure. */
762 #define elf32_mb_hash_table(p) \
763 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
764 == MICROBLAZE_ELF_DATA ? ((struct elf32_mb_link_hash_table *) ((p)->hash)) : NULL)
766 /* Create an entry in a microblaze ELF linker hash table. */
768 static struct bfd_hash_entry
*
769 link_hash_newfunc (struct bfd_hash_entry
*entry
,
770 struct bfd_hash_table
*table
,
773 /* Allocate the structure if it has not already been allocated by a
777 entry
= bfd_hash_allocate (table
,
778 sizeof (struct elf32_mb_link_hash_entry
));
783 /* Call the allocation method of the superclass. */
784 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
787 struct elf32_mb_link_hash_entry
*eh
;
789 eh
= (struct elf32_mb_link_hash_entry
*) entry
;
796 /* Create a mb ELF linker hash table. */
798 static struct bfd_link_hash_table
*
799 microblaze_elf_link_hash_table_create (bfd
*abfd
)
801 struct elf32_mb_link_hash_table
*ret
;
802 size_t amt
= sizeof (struct elf32_mb_link_hash_table
);
804 ret
= (struct elf32_mb_link_hash_table
*) bfd_zmalloc (amt
);
808 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
809 sizeof (struct elf32_mb_link_hash_entry
),
810 MICROBLAZE_ELF_DATA
))
816 return &ret
->elf
.root
;
819 /* Set the values of the small data pointers. */
822 microblaze_elf_final_sdp (struct bfd_link_info
*info
)
824 struct bfd_link_hash_entry
*h
;
826 h
= bfd_link_hash_lookup (info
->hash
, RO_SDA_ANCHOR_NAME
, FALSE
, FALSE
, TRUE
);
827 if (h
!= (struct bfd_link_hash_entry
*) NULL
828 && h
->type
== bfd_link_hash_defined
)
829 ro_small_data_pointer
= (h
->u
.def
.value
830 + h
->u
.def
.section
->output_section
->vma
831 + h
->u
.def
.section
->output_offset
);
833 h
= bfd_link_hash_lookup (info
->hash
, RW_SDA_ANCHOR_NAME
, FALSE
, FALSE
, TRUE
);
834 if (h
!= (struct bfd_link_hash_entry
*) NULL
835 && h
->type
== bfd_link_hash_defined
)
836 rw_small_data_pointer
= (h
->u
.def
.value
837 + h
->u
.def
.section
->output_section
->vma
838 + h
->u
.def
.section
->output_offset
);
842 dtprel_base (struct bfd_link_info
*info
)
844 /* If tls_sec is NULL, we should have signalled an error already. */
845 if (elf_hash_table (info
)->tls_sec
== NULL
)
847 return elf_hash_table (info
)->tls_sec
->vma
;
850 /* The size of the thread control block. */
853 /* Output a simple dynamic relocation into SRELOC. */
856 microblaze_elf_output_dynamic_relocation (bfd
*output_bfd
,
858 unsigned long reloc_index
,
865 Elf_Internal_Rela rel
;
867 rel
.r_info
= ELF32_R_INFO (indx
, r_type
);
868 rel
.r_offset
= offset
;
869 rel
.r_addend
= addend
;
871 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
872 (sreloc
->contents
+ reloc_index
* sizeof (Elf32_External_Rela
)));
875 /* This code is taken from elf32-m32r.c
876 There is some attempt to make this function usable for many architectures,
877 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
878 if only to serve as a learning tool.
880 The RELOCATE_SECTION function is called by the new ELF backend linker
881 to handle the relocations for a section.
883 The relocs are always passed as Rela structures; if the section
884 actually uses Rel structures, the r_addend field will always be
887 This function is responsible for adjust the section contents as
888 necessary, and (if using Rela relocs and generating a
889 relocatable output file) adjusting the reloc addend as
892 This function does not have to worry about setting the reloc
893 address or the reloc symbol index.
895 LOCAL_SYMS is a pointer to the swapped in local symbols.
897 LOCAL_SECTIONS is an array giving the section in the input file
898 corresponding to the st_shndx field of each local symbol.
900 The global hash table entry for the global symbols can be found
901 via elf_sym_hashes (input_bfd).
903 When generating relocatable output, this function must handle
904 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
905 going to be the section symbol corresponding to the output
906 section, which means that the addend must be adjusted
910 microblaze_elf_relocate_section (bfd
*output_bfd
,
911 struct bfd_link_info
*info
,
913 asection
*input_section
,
915 Elf_Internal_Rela
*relocs
,
916 Elf_Internal_Sym
*local_syms
,
917 asection
**local_sections
)
919 struct elf32_mb_link_hash_table
*htab
;
920 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
921 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
922 Elf_Internal_Rela
*rel
, *relend
;
923 int endian
= (bfd_little_endian (output_bfd
)) ? 0 : 2;
924 /* Assume success. */
925 bfd_boolean ret
= TRUE
;
927 bfd_vma
*local_got_offsets
;
928 unsigned int tls_type
;
930 if (!microblaze_elf_howto_table
[R_MICROBLAZE_max
-1])
931 microblaze_elf_howto_init ();
933 htab
= elf32_mb_hash_table (info
);
937 local_got_offsets
= elf_local_got_offsets (input_bfd
);
939 sreloc
= elf_section_data (input_section
)->sreloc
;
942 relend
= relocs
+ input_section
->reloc_count
;
943 for (; rel
< relend
; rel
++)
946 reloc_howto_type
*howto
;
947 unsigned long r_symndx
;
948 bfd_vma addend
= rel
->r_addend
;
949 bfd_vma offset
= rel
->r_offset
;
950 struct elf_link_hash_entry
*h
;
951 Elf_Internal_Sym
*sym
;
953 const char *sym_name
;
954 bfd_reloc_status_type r
= bfd_reloc_ok
;
955 const char *errmsg
= NULL
;
956 bfd_boolean unresolved_reloc
= FALSE
;
959 r_type
= ELF32_R_TYPE (rel
->r_info
);
962 if (r_type
< 0 || r_type
>= (int) R_MICROBLAZE_max
)
964 /* xgettext:c-format */
965 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
966 input_bfd
, (int) r_type
);
967 bfd_set_error (bfd_error_bad_value
);
972 howto
= microblaze_elf_howto_table
[r_type
];
973 r_symndx
= ELF32_R_SYM (rel
->r_info
);
975 if (bfd_link_relocatable (info
))
977 /* This is a relocatable link. We don't have to change
978 anything, unless the reloc is against a section symbol,
979 in which case we have to adjust according to where the
980 section symbol winds up in the output section. */
982 if (r_symndx
>= symtab_hdr
->sh_info
)
983 /* External symbol. */
987 sym
= local_syms
+ r_symndx
;
988 sym_name
= "<local symbol>";
989 /* STT_SECTION: symbol is associated with a section. */
990 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
991 /* Symbol isn't associated with a section. Nothing to do. */
994 sec
= local_sections
[r_symndx
];
995 addend
+= sec
->output_offset
+ sym
->st_value
;
997 /* This can't be done for USE_REL because it doesn't mean anything
998 and elf_link_input_bfd asserts this stays zero. */
999 /* rel->r_addend = addend; */
1003 /* Addends are stored with relocs. We're done. */
1006 /* If partial_inplace, we need to store any additional addend
1007 back in the section. */
1008 if (!howto
->partial_inplace
)
1010 /* ??? Here is a nice place to call a special_function like handler. */
1011 r
= _bfd_relocate_contents (howto
, input_bfd
, addend
,
1013 #endif /* USE_REL */
1018 bfd_boolean resolved_to_zero
;
1020 /* This is a final link. */
1023 unresolved_reloc
= FALSE
;
1025 if (r_symndx
< symtab_hdr
->sh_info
)
1028 sym
= local_syms
+ r_symndx
;
1029 sec
= local_sections
[r_symndx
];
1032 sym_name
= "<local symbol>";
1033 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1034 /* r_addend may have changed if the reference section was
1036 addend
= rel
->r_addend
;
1040 /* External symbol. */
1041 bfd_boolean warned ATTRIBUTE_UNUSED
;
1042 bfd_boolean ignored ATTRIBUTE_UNUSED
;
1044 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1045 r_symndx
, symtab_hdr
, sym_hashes
,
1047 unresolved_reloc
, warned
, ignored
);
1048 sym_name
= h
->root
.root
.string
;
1051 /* Sanity check the address. */
1052 if (offset
> bfd_get_section_limit (input_bfd
, input_section
))
1054 r
= bfd_reloc_outofrange
;
1058 resolved_to_zero
= (h
!= NULL
1059 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
1061 switch ((int) r_type
)
1063 case (int) R_MICROBLAZE_SRO32
:
1067 /* Only relocate if the symbol is defined. */
1070 name
= bfd_section_name (sec
);
1072 if (strcmp (name
, ".sdata2") == 0
1073 || strcmp (name
, ".sbss2") == 0)
1075 if (ro_small_data_pointer
== 0)
1076 microblaze_elf_final_sdp (info
);
1077 if (ro_small_data_pointer
== 0)
1080 r
= bfd_reloc_undefined
;
1084 /* At this point `relocation' contains the object's
1086 relocation
-= ro_small_data_pointer
;
1087 /* Now it contains the offset from _SDA2_BASE_. */
1088 r
= _bfd_final_link_relocate (howto
, input_bfd
,
1091 relocation
, addend
);
1096 /* xgettext:c-format */
1097 (_("%pB: the target (%s) of an %s relocation"
1098 " is in the wrong section (%pA)"),
1101 microblaze_elf_howto_table
[(int) r_type
]->name
,
1103 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1111 case (int) R_MICROBLAZE_SRW32
:
1115 /* Only relocate if the symbol is defined. */
1118 name
= bfd_section_name (sec
);
1120 if (strcmp (name
, ".sdata") == 0
1121 || strcmp (name
, ".sbss") == 0)
1123 if (rw_small_data_pointer
== 0)
1124 microblaze_elf_final_sdp (info
);
1125 if (rw_small_data_pointer
== 0)
1128 r
= bfd_reloc_undefined
;
1132 /* At this point `relocation' contains the object's
1134 relocation
-= rw_small_data_pointer
;
1135 /* Now it contains the offset from _SDA_BASE_. */
1136 r
= _bfd_final_link_relocate (howto
, input_bfd
,
1139 relocation
, addend
);
1144 /* xgettext:c-format */
1145 (_("%pB: the target (%s) of an %s relocation"
1146 " is in the wrong section (%pA)"),
1149 microblaze_elf_howto_table
[(int) r_type
]->name
,
1151 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1159 case (int) R_MICROBLAZE_32_SYM_OP_SYM
:
1160 break; /* Do nothing. */
1162 case (int) R_MICROBLAZE_GOTPC_64
:
1163 relocation
= (htab
->elf
.sgotplt
->output_section
->vma
1164 + htab
->elf
.sgotplt
->output_offset
);
1165 relocation
-= (input_section
->output_section
->vma
1166 + input_section
->output_offset
1167 + offset
+ INST_WORD_SIZE
);
1168 relocation
+= addend
;
1169 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1170 contents
+ offset
+ endian
);
1171 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1172 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1175 case (int) R_MICROBLAZE_TEXTPCREL_64
:
1176 relocation
= input_section
->output_section
->vma
;
1177 relocation
-= (input_section
->output_section
->vma
1178 + input_section
->output_offset
1179 + offset
+ INST_WORD_SIZE
);
1180 relocation
+= addend
;
1181 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1182 contents
+ offset
+ endian
);
1183 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1184 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1187 case (int) R_MICROBLAZE_PLT_64
:
1190 if (htab
->elf
.splt
!= NULL
&& h
!= NULL
1191 && h
->plt
.offset
!= (bfd_vma
) -1)
1193 relocation
= (htab
->elf
.splt
->output_section
->vma
1194 + htab
->elf
.splt
->output_offset
1196 unresolved_reloc
= FALSE
;
1197 immediate
= relocation
- (input_section
->output_section
->vma
1198 + input_section
->output_offset
1199 + offset
+ INST_WORD_SIZE
);
1200 bfd_put_16 (input_bfd
, (immediate
>> 16) & 0xffff,
1201 contents
+ offset
+ endian
);
1202 bfd_put_16 (input_bfd
, immediate
& 0xffff,
1203 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1207 relocation
-= (input_section
->output_section
->vma
1208 + input_section
->output_offset
1209 + offset
+ INST_WORD_SIZE
);
1210 immediate
= relocation
;
1211 bfd_put_16 (input_bfd
, (immediate
>> 16) & 0xffff,
1212 contents
+ offset
+ endian
);
1213 bfd_put_16 (input_bfd
, immediate
& 0xffff,
1214 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1219 case (int) R_MICROBLAZE_TLSGD
:
1220 tls_type
= (TLS_TLS
| TLS_GD
);
1222 case (int) R_MICROBLAZE_TLSLD
:
1223 tls_type
= (TLS_TLS
| TLS_LD
);
1226 case (int) R_MICROBLAZE_GOT_64
:
1231 bfd_vma static_value
;
1233 bfd_boolean need_relocs
= FALSE
;
1234 if (htab
->elf
.sgot
== NULL
)
1240 /* 1. Identify GOT Offset;
1241 2. Compute Static Values
1242 3. Process Module Id, Process Offset
1243 4. Fixup Relocation with GOT offset value. */
1245 /* 1. Determine GOT Offset to use : TLS_LD, global, local */
1246 if (IS_TLS_LD (tls_type
))
1247 offp
= &htab
->tlsld_got
.offset
;
1250 if (htab
->elf
.sgotplt
!= NULL
1251 && h
->got
.offset
!= (bfd_vma
) -1)
1252 offp
= &h
->got
.offset
;
1258 if (local_got_offsets
== NULL
)
1260 offp
= &local_got_offsets
[r_symndx
];
1269 if (IS_TLS_LD(tls_type
) || IS_TLS_GD(tls_type
))
1272 /* Symbol index to use for relocs */
1276 elf_hash_table (info
)->dynamic_sections_created
;
1278 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
1279 bfd_link_pic (info
),
1281 && (!bfd_link_pic (info
)
1282 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
1286 /* Need to generate relocs ? */
1287 if ((bfd_link_pic (info
) || indx
!= 0)
1289 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1290 && !resolved_to_zero
)
1291 || h
->root
.type
!= bfd_link_hash_undefweak
))
1294 /* 2. Compute/Emit Static value of r-expression */
1295 static_value
= relocation
+ addend
;
1297 /* 3. Process module-id and offset */
1298 if (! ((*offp
) & 1) )
1302 got_offset
= (htab
->elf
.sgot
->output_section
->vma
1303 + htab
->elf
.sgot
->output_offset
1306 /* Process module-id */
1307 if (IS_TLS_LD(tls_type
))
1309 if (! bfd_link_pic (info
))
1310 bfd_put_32 (output_bfd
, 1,
1311 htab
->elf
.sgot
->contents
+ off
);
1313 microblaze_elf_output_dynamic_relocation
1316 htab
->elf
.srelgot
->reloc_count
++,
1317 /* symindex= */ 0, R_MICROBLAZE_TLSDTPMOD32
,
1320 else if (IS_TLS_GD(tls_type
))
1323 bfd_put_32 (output_bfd
, 1,
1324 htab
->elf
.sgot
->contents
+ off
);
1326 microblaze_elf_output_dynamic_relocation
1329 htab
->elf
.srelgot
->reloc_count
++,
1330 /* symindex= */ indx
, R_MICROBLAZE_TLSDTPMOD32
,
1331 got_offset
, indx
? 0 : static_value
);
1334 /* Process Offset */
1335 if (htab
->elf
.srelgot
== NULL
)
1338 got_offset
= (htab
->elf
.sgot
->output_section
->vma
1339 + htab
->elf
.sgot
->output_offset
1341 if (IS_TLS_LD(tls_type
))
1343 /* For LD, offset should be 0 */
1345 bfd_put_32 (output_bfd
, 0,
1346 htab
->elf
.sgot
->contents
+ off2
);
1348 else if (IS_TLS_GD(tls_type
))
1351 static_value
-= dtprel_base(info
);
1353 microblaze_elf_output_dynamic_relocation
1356 htab
->elf
.srelgot
->reloc_count
++,
1357 /* symindex= */ indx
, R_MICROBLAZE_TLSDTPREL32
,
1358 got_offset
, indx
? 0 : static_value
);
1360 bfd_put_32 (output_bfd
, static_value
,
1361 htab
->elf
.sgot
->contents
+ off2
);
1365 bfd_put_32 (output_bfd
, static_value
,
1366 htab
->elf
.sgot
->contents
+ off2
);
1368 /* Relocs for dyn symbols generated by
1369 finish_dynamic_symbols */
1370 if (bfd_link_pic (info
) && h
== NULL
)
1373 microblaze_elf_output_dynamic_relocation
1376 htab
->elf
.srelgot
->reloc_count
++,
1377 /* symindex= */ indx
, R_MICROBLAZE_REL
,
1378 got_offset
, static_value
);
1383 /* 4. Fixup Relocation with GOT offset value
1384 Compute relative address of GOT entry for applying
1385 the current relocation */
1386 relocation
= htab
->elf
.sgot
->output_section
->vma
1387 + htab
->elf
.sgot
->output_offset
1389 - htab
->elf
.sgotplt
->output_section
->vma
1390 - htab
->elf
.sgotplt
->output_offset
;
1392 /* Apply Current Relocation */
1393 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1394 contents
+ offset
+ endian
);
1395 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1396 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1398 unresolved_reloc
= FALSE
;
1402 case (int) R_MICROBLAZE_GOTOFF_64
:
1405 unsigned short lo
, high
;
1406 relocation
+= addend
;
1407 relocation
-= (htab
->elf
.sgotplt
->output_section
->vma
1408 + htab
->elf
.sgotplt
->output_offset
);
1409 /* Write this value into correct location. */
1410 immediate
= relocation
;
1411 lo
= immediate
& 0x0000ffff;
1412 high
= (immediate
>> 16) & 0x0000ffff;
1413 bfd_put_16 (input_bfd
, high
, contents
+ offset
+ endian
);
1414 bfd_put_16 (input_bfd
, lo
,
1415 contents
+ offset
+ INST_WORD_SIZE
+ endian
);
1419 case (int) R_MICROBLAZE_GOTOFF_32
:
1421 relocation
+= addend
;
1422 relocation
-= (htab
->elf
.sgotplt
->output_section
->vma
1423 + htab
->elf
.sgotplt
->output_offset
);
1424 /* Write this value into correct location. */
1425 bfd_put_32 (input_bfd
, relocation
, contents
+ offset
);
1429 case (int) R_MICROBLAZE_TLSDTPREL64
:
1430 relocation
+= addend
;
1431 relocation
-= dtprel_base(info
);
1432 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1433 contents
+ offset
+ 2);
1434 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1435 contents
+ offset
+ 2 + INST_WORD_SIZE
);
1437 case (int) R_MICROBLAZE_TEXTREL_64
:
1438 case (int) R_MICROBLAZE_TEXTREL_32_LO
:
1439 case (int) R_MICROBLAZE_64_PCREL
:
1440 case (int) R_MICROBLAZE_64
:
1441 case (int) R_MICROBLAZE_32
:
1443 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1444 from removed linkonce sections, or sections discarded by
1446 if (r_symndx
== STN_UNDEF
|| (input_section
->flags
& SEC_ALLOC
) == 0)
1448 relocation
+= addend
;
1449 if (r_type
== R_MICROBLAZE_32
)
1450 bfd_put_32 (input_bfd
, relocation
, contents
+ offset
);
1453 if (r_type
== R_MICROBLAZE_64_PCREL
)
1454 relocation
-= (input_section
->output_section
->vma
1455 + input_section
->output_offset
1456 + offset
+ INST_WORD_SIZE
);
1457 else if (r_type
== R_MICROBLAZE_TEXTREL_64
1458 || r_type
== R_MICROBLAZE_TEXTREL_32_LO
)
1459 relocation
-= input_section
->output_section
->vma
;
1461 if (r_type
== R_MICROBLAZE_TEXTREL_32_LO
)
1462 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1463 contents
+ offset
+ endian
);
1467 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1468 contents
+ offset
+ endian
);
1469 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1470 contents
+ offset
+ endian
+ INST_WORD_SIZE
);
1476 if ((bfd_link_pic (info
)
1478 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1479 && !resolved_to_zero
)
1480 || h
->root
.type
!= bfd_link_hash_undefweak
)
1481 && (!howto
->pc_relative
1485 || !h
->def_regular
))))
1486 || (!bfd_link_pic (info
)
1492 || h
->root
.type
== bfd_link_hash_undefweak
1493 || h
->root
.type
== bfd_link_hash_undefined
)))
1495 Elf_Internal_Rela outrel
;
1499 /* When generating a shared object, these relocations
1500 are copied into the output file to be resolved at run
1503 BFD_ASSERT (sreloc
!= NULL
);
1508 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1510 if (outrel
.r_offset
== (bfd_vma
) -1)
1512 else if (outrel
.r_offset
== (bfd_vma
) -2)
1514 outrel
.r_offset
+= (input_section
->output_section
->vma
1515 + input_section
->output_offset
);
1518 memset (&outrel
, 0, sizeof outrel
);
1519 /* h->dynindx may be -1 if the symbol was marked to
1522 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1523 || !h
->def_regular
))
1525 BFD_ASSERT (h
->dynindx
!= -1);
1526 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1527 outrel
.r_addend
= addend
;
1531 if (r_type
== R_MICROBLAZE_32
)
1533 outrel
.r_info
= ELF32_R_INFO (0, R_MICROBLAZE_REL
);
1534 outrel
.r_addend
= relocation
+ addend
;
1540 (_("%pB: probably compiled without -fPIC?"),
1542 bfd_set_error (bfd_error_bad_value
);
1547 loc
= sreloc
->contents
;
1548 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1549 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1554 relocation
+= addend
;
1555 if (r_type
== R_MICROBLAZE_32
)
1556 bfd_put_32 (input_bfd
, relocation
, contents
+ offset
);
1559 if (r_type
== R_MICROBLAZE_64_PCREL
)
1560 relocation
-= (input_section
->output_section
->vma
1561 + input_section
->output_offset
1562 + offset
+ INST_WORD_SIZE
);
1563 else if (r_type
== R_MICROBLAZE_TEXTREL_64
1564 || r_type
== R_MICROBLAZE_TEXTREL_32_LO
)
1565 relocation
-= input_section
->output_section
->vma
;
1567 if (r_type
== R_MICROBLAZE_TEXTREL_32_LO
)
1569 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1570 contents
+ offset
+ endian
);
1574 bfd_put_16 (input_bfd
, (relocation
>> 16) & 0xffff,
1575 contents
+ offset
+ endian
);
1576 bfd_put_16 (input_bfd
, relocation
& 0xffff,
1577 contents
+ offset
+ endian
1586 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1588 relocation
, addend
);
1595 if (r
!= bfd_reloc_ok
)
1597 /* FIXME: This should be generic enough to go in a utility. */
1601 name
= h
->root
.root
.string
;
1604 name
= (bfd_elf_string_from_elf_section
1605 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1606 if (name
== NULL
|| *name
== '\0')
1607 name
= bfd_section_name (sec
);
1615 case bfd_reloc_overflow
:
1616 (*info
->callbacks
->reloc_overflow
)
1617 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1618 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
1621 case bfd_reloc_undefined
:
1622 (*info
->callbacks
->undefined_symbol
)
1623 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
1626 case bfd_reloc_outofrange
:
1627 errmsg
= _("internal error: out of range error");
1630 case bfd_reloc_notsupported
:
1631 errmsg
= _("internal error: unsupported relocation error");
1634 case bfd_reloc_dangerous
:
1635 errmsg
= _("internal error: dangerous error");
1639 errmsg
= _("internal error: unknown error");
1642 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
1643 input_section
, offset
);
1652 /* Calculate fixup value for reference. */
1655 calc_fixup (bfd_vma start
, bfd_vma size
, asection
*sec
)
1657 bfd_vma end
= start
+ size
;
1660 if (sec
== NULL
|| sec
->relax
== NULL
)
1663 /* Look for addr in relax table, total fixup value. */
1664 for (i
= 0; i
< sec
->relax_count
; i
++)
1666 if (end
<= sec
->relax
[i
].addr
)
1668 if ((end
!= start
) && (start
> sec
->relax
[i
].addr
))
1670 fixup
+= sec
->relax
[i
].size
;
1675 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1676 a 32-bit instruction. */
1678 microblaze_bfd_write_imm_value_32 (bfd
*abfd
, bfd_byte
*bfd_addr
, bfd_vma val
)
1680 unsigned long instr
= bfd_get_32 (abfd
, bfd_addr
);
1681 instr
&= ~0x0000ffff;
1682 instr
|= (val
& 0x0000ffff);
1683 bfd_put_32 (abfd
, instr
, bfd_addr
);
1686 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1687 two consecutive 32-bit instructions. */
1689 microblaze_bfd_write_imm_value_64 (bfd
*abfd
, bfd_byte
*bfd_addr
, bfd_vma val
)
1691 unsigned long instr_hi
;
1692 unsigned long instr_lo
;
1694 instr_hi
= bfd_get_32 (abfd
, bfd_addr
);
1695 instr_hi
&= ~0x0000ffff;
1696 instr_hi
|= ((val
>> 16) & 0x0000ffff);
1697 bfd_put_32 (abfd
, instr_hi
, bfd_addr
);
1699 instr_lo
= bfd_get_32 (abfd
, bfd_addr
+ INST_WORD_SIZE
);
1700 instr_lo
&= ~0x0000ffff;
1701 instr_lo
|= (val
& 0x0000ffff);
1702 bfd_put_32 (abfd
, instr_lo
, bfd_addr
+ INST_WORD_SIZE
);
1706 microblaze_elf_relax_section (bfd
*abfd
,
1708 struct bfd_link_info
*link_info
,
1711 Elf_Internal_Shdr
*symtab_hdr
;
1712 Elf_Internal_Rela
*internal_relocs
;
1713 Elf_Internal_Rela
*free_relocs
= NULL
;
1714 Elf_Internal_Rela
*irel
, *irelend
;
1715 bfd_byte
*contents
= NULL
;
1716 bfd_byte
*free_contents
= NULL
;
1721 struct elf_link_hash_entry
*sym_hash
;
1722 Elf_Internal_Sym
*isymbuf
, *isymend
;
1723 Elf_Internal_Sym
*isym
;
1728 /* We only do this once per section. We may be able to delete some code
1729 by running multiple passes, but it is not worth it. */
1732 /* Only do this for a text section. */
1733 if (bfd_link_relocatable (link_info
)
1734 || (sec
->flags
& SEC_RELOC
) == 0
1735 || (sec
->reloc_count
== 0)
1736 || (sec
->flags
& SEC_CODE
) == 0)
1739 BFD_ASSERT ((sec
->size
> 0) || (sec
->rawsize
> 0));
1741 /* If this is the first time we have been called for this section,
1742 initialize the cooked size. */
1744 sec
->size
= sec
->rawsize
;
1746 /* Get symbols for this section. */
1747 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1748 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
1749 symcount
= symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
1750 if (isymbuf
== NULL
)
1751 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
, symcount
,
1752 0, NULL
, NULL
, NULL
);
1753 BFD_ASSERT (isymbuf
!= NULL
);
1755 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, link_info
->keep_memory
);
1756 if (internal_relocs
== NULL
)
1758 if (! link_info
->keep_memory
)
1759 free_relocs
= internal_relocs
;
1761 sec
->relax
= (struct relax_table
*) bfd_malloc ((sec
->reloc_count
+ 1)
1762 * sizeof (struct relax_table
));
1763 if (sec
->relax
== NULL
)
1765 sec
->relax_count
= 0;
1767 irelend
= internal_relocs
+ sec
->reloc_count
;
1769 for (irel
= internal_relocs
; irel
< irelend
; irel
++, rel_count
++)
1772 if ((ELF32_R_TYPE (irel
->r_info
) != (int) R_MICROBLAZE_64_PCREL
)
1773 && (ELF32_R_TYPE (irel
->r_info
) != (int) R_MICROBLAZE_64
)
1774 && (ELF32_R_TYPE (irel
->r_info
) != (int) R_MICROBLAZE_TEXTREL_64
))
1775 continue; /* Can't delete this reloc. */
1777 /* Get the section contents. */
1778 if (contents
== NULL
)
1780 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
1781 contents
= elf_section_data (sec
)->this_hdr
.contents
;
1784 contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
1785 if (contents
== NULL
)
1787 free_contents
= contents
;
1789 if (!bfd_get_section_contents (abfd
, sec
, contents
,
1790 (file_ptr
) 0, sec
->size
))
1792 elf_section_data (sec
)->this_hdr
.contents
= contents
;
1796 /* Get the value of the symbol referred to by the reloc. */
1797 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
1799 /* A local symbol. */
1802 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
1803 if (isym
->st_shndx
== SHN_UNDEF
)
1804 sym_sec
= bfd_und_section_ptr
;
1805 else if (isym
->st_shndx
== SHN_ABS
)
1806 sym_sec
= bfd_abs_section_ptr
;
1807 else if (isym
->st_shndx
== SHN_COMMON
)
1808 sym_sec
= bfd_com_section_ptr
;
1810 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1812 symval
= _bfd_elf_rela_local_sym (abfd
, isym
, &sym_sec
, irel
);
1817 struct elf_link_hash_entry
*h
;
1819 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
1820 h
= elf_sym_hashes (abfd
)[indx
];
1821 BFD_ASSERT (h
!= NULL
);
1823 if (h
->root
.type
!= bfd_link_hash_defined
1824 && h
->root
.type
!= bfd_link_hash_defweak
)
1825 /* This appears to be a reference to an undefined
1826 symbol. Just ignore it--it will be caught by the
1827 regular reloc processing. */
1830 symval
= (h
->root
.u
.def
.value
1831 + h
->root
.u
.def
.section
->output_section
->vma
1832 + h
->root
.u
.def
.section
->output_offset
);
1835 /* If this is a PC-relative reloc, subtract the instr offset from
1836 the symbol value. */
1837 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MICROBLAZE_64_PCREL
)
1839 symval
= symval
+ irel
->r_addend
1841 + sec
->output_section
->vma
1842 + sec
->output_offset
);
1844 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MICROBLAZE_TEXTREL_64
)
1846 symval
= symval
+ irel
->r_addend
- (sec
->output_section
->vma
);
1849 symval
+= irel
->r_addend
;
1851 if ((symval
& 0xffff8000) == 0
1852 || (symval
& 0xffff8000) == 0xffff8000)
1854 /* We can delete this instruction. */
1855 sec
->relax
[sec
->relax_count
].addr
= irel
->r_offset
;
1856 sec
->relax
[sec
->relax_count
].size
= INST_WORD_SIZE
;
1859 /* Rewrite relocation type. */
1860 switch ((enum elf_microblaze_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
1862 case R_MICROBLAZE_64_PCREL
:
1863 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
1864 (int) R_MICROBLAZE_32_PCREL_LO
);
1866 case R_MICROBLAZE_64
:
1867 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
1868 (int) R_MICROBLAZE_32_LO
);
1870 case R_MICROBLAZE_TEXTREL_64
:
1871 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
1872 (int) R_MICROBLAZE_TEXTREL_32_LO
);
1875 /* Cannot happen. */
1879 } /* Loop through all relocations. */
1881 /* Loop through the relocs again, and see if anything needs to change. */
1882 if (sec
->relax_count
> 0)
1884 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
1886 sec
->relax
[sec
->relax_count
].addr
= sec
->size
;
1888 for (irel
= internal_relocs
; irel
< irelend
; irel
++, rel_count
++)
1892 /* Get the new reloc address. */
1893 nraddr
= irel
->r_offset
- calc_fixup (irel
->r_offset
, 0, sec
);
1894 switch ((enum elf_microblaze_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
1898 case R_MICROBLAZE_64_PCREL
:
1900 case R_MICROBLAZE_TEXTREL_64
:
1901 case R_MICROBLAZE_TEXTREL_32_LO
:
1902 case R_MICROBLAZE_64
:
1903 case R_MICROBLAZE_32_LO
:
1904 /* If this reloc is against a symbol defined in this
1905 section, we must check the addend to see it will put the value in
1906 range to be adjusted, and hence must be changed. */
1907 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
1909 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
1910 /* Only handle relocs against .text. */
1911 if (isym
->st_shndx
== shndx
1912 && ELF32_ST_TYPE (isym
->st_info
) == STT_SECTION
)
1913 irel
->r_addend
-= calc_fixup (irel
->r_addend
, 0, sec
);
1916 case R_MICROBLAZE_NONE
:
1918 /* This was a PC-relative instruction that was
1919 completely resolved. */
1921 bfd_vma target_address
;
1922 target_address
= irel
->r_addend
+ irel
->r_offset
;
1923 sfix
= calc_fixup (irel
->r_offset
, 0, sec
);
1924 efix
= calc_fixup (target_address
, 0, sec
);
1925 irel
->r_addend
-= (efix
- sfix
);
1926 /* Should use HOWTO. */
1927 microblaze_bfd_write_imm_value_32 (abfd
, contents
+ irel
->r_offset
,
1931 case R_MICROBLAZE_64_NONE
:
1933 /* This was a PC-relative 64-bit instruction that was
1934 completely resolved. */
1936 bfd_vma target_address
;
1937 target_address
= irel
->r_addend
+ irel
->r_offset
+ INST_WORD_SIZE
;
1938 sfix
= calc_fixup (irel
->r_offset
+ INST_WORD_SIZE
, 0, sec
);
1939 efix
= calc_fixup (target_address
, 0, sec
);
1940 irel
->r_addend
-= (efix
- sfix
);
1941 microblaze_bfd_write_imm_value_32 (abfd
, contents
+ irel
->r_offset
1942 + INST_WORD_SIZE
, irel
->r_addend
);
1946 irel
->r_offset
= nraddr
;
1947 } /* Change all relocs in this section. */
1949 /* Look through all other sections. */
1950 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1952 Elf_Internal_Rela
*irelocs
;
1953 Elf_Internal_Rela
*irelscan
, *irelscanend
;
1954 bfd_byte
*ocontents
;
1957 || (o
->flags
& SEC_RELOC
) == 0
1958 || o
->reloc_count
== 0)
1961 /* We always cache the relocs. Perhaps, if info->keep_memory is
1962 FALSE, we should free them, if we are permitted to. */
1964 irelocs
= _bfd_elf_link_read_relocs (abfd
, o
, NULL
, NULL
, TRUE
);
1965 if (irelocs
== NULL
)
1969 irelscanend
= irelocs
+ o
->reloc_count
;
1970 for (irelscan
= irelocs
; irelscan
< irelscanend
; irelscan
++)
1972 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_MICROBLAZE_32
)
1974 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
1976 /* Look at the reloc only if the value has been resolved. */
1977 if (isym
->st_shndx
== shndx
1978 && (ELF32_ST_TYPE (isym
->st_info
) == STT_SECTION
))
1980 if (ocontents
== NULL
)
1982 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
1983 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
1986 /* We always cache the section contents.
1987 Perhaps, if info->keep_memory is FALSE, we
1988 should free them, if we are permitted to. */
1989 if (o
->rawsize
== 0)
1990 o
->rawsize
= o
->size
;
1991 ocontents
= (bfd_byte
*) bfd_malloc (o
->rawsize
);
1992 if (ocontents
== NULL
)
1994 if (!bfd_get_section_contents (abfd
, o
, ocontents
,
1998 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
2002 irelscan
->r_addend
-= calc_fixup (irelscan
->r_addend
, 0, sec
);
2004 else if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_MICROBLAZE_32_SYM_OP_SYM
)
2006 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
2008 /* Look at the reloc only if the value has been resolved. */
2009 if (ocontents
== NULL
)
2011 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
2012 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
2015 /* We always cache the section contents.
2016 Perhaps, if info->keep_memory is FALSE, we
2017 should free them, if we are permitted to. */
2019 if (o
->rawsize
== 0)
2020 o
->rawsize
= o
->size
;
2021 ocontents
= (bfd_byte
*) bfd_malloc (o
->rawsize
);
2022 if (ocontents
== NULL
)
2024 if (!bfd_get_section_contents (abfd
, o
, ocontents
,
2028 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
2031 irelscan
->r_addend
-= calc_fixup (irel
->r_addend
2037 else if ((ELF32_R_TYPE (irelscan
->r_info
) == (int) R_MICROBLAZE_32_PCREL_LO
)
2038 || (ELF32_R_TYPE (irelscan
->r_info
)
2039 == (int) R_MICROBLAZE_32_LO
)
2040 || (ELF32_R_TYPE (irelscan
->r_info
)
2041 == (int) R_MICROBLAZE_TEXTREL_32_LO
))
2043 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
2045 /* Look at the reloc only if the value has been resolved. */
2046 if (isym
->st_shndx
== shndx
2047 && (ELF32_ST_TYPE (isym
->st_info
) == STT_SECTION
))
2050 bfd_vma target_address
;
2052 if (ocontents
== NULL
)
2054 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
2055 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
2058 /* We always cache the section contents.
2059 Perhaps, if info->keep_memory is FALSE, we
2060 should free them, if we are permitted to. */
2061 if (o
->rawsize
== 0)
2062 o
->rawsize
= o
->size
;
2063 ocontents
= (bfd_byte
*) bfd_malloc (o
->rawsize
);
2064 if (ocontents
== NULL
)
2066 if (!bfd_get_section_contents (abfd
, o
, ocontents
,
2070 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
2074 unsigned long instr
= bfd_get_32 (abfd
, ocontents
+ irelscan
->r_offset
);
2075 immediate
= instr
& 0x0000ffff;
2076 target_address
= immediate
;
2077 offset
= calc_fixup (target_address
, 0, sec
);
2078 immediate
-= offset
;
2079 irelscan
->r_addend
-= offset
;
2080 microblaze_bfd_write_imm_value_32 (abfd
, ocontents
+ irelscan
->r_offset
,
2081 irelscan
->r_addend
);
2085 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_MICROBLAZE_64
2086 || (ELF32_R_TYPE (irelscan
->r_info
)
2087 == (int) R_MICROBLAZE_TEXTREL_64
))
2089 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
2091 /* Look at the reloc only if the value has been resolved. */
2092 if (isym
->st_shndx
== shndx
2093 && (ELF32_ST_TYPE (isym
->st_info
) == STT_SECTION
))
2097 if (ocontents
== NULL
)
2099 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
2100 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
2103 /* We always cache the section contents.
2104 Perhaps, if info->keep_memory is FALSE, we
2105 should free them, if we are permitted to. */
2107 if (o
->rawsize
== 0)
2108 o
->rawsize
= o
->size
;
2109 ocontents
= (bfd_byte
*) bfd_malloc (o
->rawsize
);
2110 if (ocontents
== NULL
)
2112 if (!bfd_get_section_contents (abfd
, o
, ocontents
,
2116 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
2119 unsigned long instr_hi
= bfd_get_32 (abfd
, ocontents
2120 + irelscan
->r_offset
);
2121 unsigned long instr_lo
= bfd_get_32 (abfd
, ocontents
2122 + irelscan
->r_offset
2124 immediate
= (instr_hi
& 0x0000ffff) << 16;
2125 immediate
|= (instr_lo
& 0x0000ffff);
2126 offset
= calc_fixup (irelscan
->r_addend
, 0, sec
);
2127 immediate
-= offset
;
2128 irelscan
->r_addend
-= offset
;
2131 else if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_MICROBLAZE_64_PCREL
)
2133 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
2135 /* Look at the reloc only if the value has been resolved. */
2136 if (isym
->st_shndx
== shndx
2137 && (ELF32_ST_TYPE (isym
->st_info
) == STT_SECTION
))
2140 bfd_vma target_address
;
2142 if (ocontents
== NULL
)
2144 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
2145 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
2148 /* We always cache the section contents.
2149 Perhaps, if info->keep_memory is FALSE, we
2150 should free them, if we are permitted to. */
2151 if (o
->rawsize
== 0)
2152 o
->rawsize
= o
->size
;
2153 ocontents
= (bfd_byte
*) bfd_malloc (o
->rawsize
);
2154 if (ocontents
== NULL
)
2156 if (!bfd_get_section_contents (abfd
, o
, ocontents
,
2160 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
2163 unsigned long instr_hi
= bfd_get_32 (abfd
, ocontents
2164 + irelscan
->r_offset
);
2165 unsigned long instr_lo
= bfd_get_32 (abfd
, ocontents
2166 + irelscan
->r_offset
2168 immediate
= (instr_hi
& 0x0000ffff) << 16;
2169 immediate
|= (instr_lo
& 0x0000ffff);
2170 target_address
= immediate
;
2171 offset
= calc_fixup (target_address
, 0, sec
);
2172 immediate
-= offset
;
2173 irelscan
->r_addend
-= offset
;
2174 microblaze_bfd_write_imm_value_64 (abfd
, ocontents
2175 + irelscan
->r_offset
, immediate
);
2181 /* Adjust the local symbols defined in this section. */
2182 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2183 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2185 if (isym
->st_shndx
== shndx
)
2187 isym
->st_value
-= calc_fixup (isym
->st_value
, 0, sec
);
2189 isym
->st_size
-= calc_fixup (isym
->st_value
, isym
->st_size
, sec
);
2193 /* Now adjust the global symbols defined in this section. */
2194 isym
= isymbuf
+ symtab_hdr
->sh_info
;
2195 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)) - symtab_hdr
->sh_info
;
2196 for (sym_index
= 0; sym_index
< symcount
; sym_index
++)
2198 sym_hash
= elf_sym_hashes (abfd
)[sym_index
];
2199 if ((sym_hash
->root
.type
== bfd_link_hash_defined
2200 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
2201 && sym_hash
->root
.u
.def
.section
== sec
)
2203 sym_hash
->root
.u
.def
.value
-= calc_fixup (sym_hash
->root
.u
.def
.value
,
2206 sym_hash
->size
-= calc_fixup (sym_hash
->root
.u
.def
.value
,
2207 sym_hash
->size
, sec
);
2211 /* Physically move the code and change the cooked size. */
2212 dest
= sec
->relax
[0].addr
;
2213 for (i
= 0; i
< sec
->relax_count
; i
++)
2216 src
= sec
->relax
[i
].addr
+ sec
->relax
[i
].size
;
2217 len
= sec
->relax
[i
+1].addr
- sec
->relax
[i
].addr
- sec
->relax
[i
].size
;
2219 memmove (contents
+ dest
, contents
+ src
, len
);
2220 sec
->size
-= sec
->relax
[i
].size
;
2224 elf_section_data (sec
)->relocs
= internal_relocs
;
2227 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2228 free_contents
= NULL
;
2230 symtab_hdr
->contents
= (bfd_byte
*) isymbuf
;
2236 if (free_contents
!= NULL
)
2238 if (!link_info
->keep_memory
)
2239 free (free_contents
);
2241 /* Cache the section contents for elf_link_input_bfd. */
2242 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2243 free_contents
= NULL
;
2246 if (sec
->relax_count
== 0)
2258 free (free_contents
);
2261 sec
->relax_count
= 0;
2265 /* Return the section that should be marked against GC for a given
2269 microblaze_elf_gc_mark_hook (asection
*sec
,
2270 struct bfd_link_info
* info
,
2271 Elf_Internal_Rela
* rel
,
2272 struct elf_link_hash_entry
* h
,
2273 Elf_Internal_Sym
* sym
)
2276 switch (ELF32_R_TYPE (rel
->r_info
))
2278 case R_MICROBLAZE_GNU_VTINHERIT
:
2279 case R_MICROBLAZE_GNU_VTENTRY
:
2283 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
2288 #define PLT_ENTRY_SIZE 16
2290 #define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */
2291 #define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */
2292 #define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */
2293 #define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */
2294 #define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */
2297 update_local_sym_info (bfd
*abfd
,
2298 Elf_Internal_Shdr
*symtab_hdr
,
2299 unsigned long r_symndx
,
2300 unsigned int tls_type
)
2302 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
2303 unsigned char *local_got_tls_masks
;
2305 if (local_got_refcounts
== NULL
)
2307 bfd_size_type size
= symtab_hdr
->sh_info
;
2309 size
*= (sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
));
2310 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2311 if (local_got_refcounts
== NULL
)
2313 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2316 local_got_tls_masks
=
2317 (unsigned char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2318 local_got_tls_masks
[r_symndx
] |= tls_type
;
2319 local_got_refcounts
[r_symndx
] += 1;
2323 /* Look through the relocs for a section during the first phase. */
2326 microblaze_elf_check_relocs (bfd
* abfd
,
2327 struct bfd_link_info
* info
,
2329 const Elf_Internal_Rela
* relocs
)
2331 Elf_Internal_Shdr
* symtab_hdr
;
2332 struct elf_link_hash_entry
** sym_hashes
;
2333 struct elf_link_hash_entry
** sym_hashes_end
;
2334 const Elf_Internal_Rela
* rel
;
2335 const Elf_Internal_Rela
* rel_end
;
2336 struct elf32_mb_link_hash_table
*htab
;
2337 asection
*sreloc
= NULL
;
2339 if (bfd_link_relocatable (info
))
2342 htab
= elf32_mb_hash_table (info
);
2346 symtab_hdr
= & elf_tdata (abfd
)->symtab_hdr
;
2347 sym_hashes
= elf_sym_hashes (abfd
);
2348 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
2349 if (!elf_bad_symtab (abfd
))
2350 sym_hashes_end
-= symtab_hdr
->sh_info
;
2352 rel_end
= relocs
+ sec
->reloc_count
;
2354 for (rel
= relocs
; rel
< rel_end
; rel
++)
2356 unsigned int r_type
;
2357 struct elf_link_hash_entry
* h
;
2358 unsigned long r_symndx
;
2359 unsigned char tls_type
= 0;
2361 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2362 r_type
= ELF32_R_TYPE (rel
->r_info
);
2364 if (r_symndx
< symtab_hdr
->sh_info
)
2368 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2369 while (h
->root
.type
== bfd_link_hash_indirect
2370 || h
->root
.type
== bfd_link_hash_warning
)
2371 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2376 /* This relocation describes the C++ object vtable hierarchy.
2377 Reconstruct it for later use during GC. */
2378 case R_MICROBLAZE_GNU_VTINHERIT
:
2379 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
2383 /* This relocation describes which C++ vtable entries are actually
2384 used. Record for later use during GC. */
2385 case R_MICROBLAZE_GNU_VTENTRY
:
2386 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
2390 /* This relocation requires .plt entry. */
2391 case R_MICROBLAZE_PLT_64
:
2395 h
->plt
.refcount
+= 1;
2399 /* This relocation requires .got entry. */
2400 case R_MICROBLAZE_TLSGD
:
2401 tls_type
|= (TLS_TLS
| TLS_GD
);
2403 case R_MICROBLAZE_TLSLD
:
2404 tls_type
|= (TLS_TLS
| TLS_LD
);
2407 sec
->has_tls_reloc
= 1;
2409 case R_MICROBLAZE_GOT_64
:
2410 if (htab
->elf
.sgot
== NULL
)
2412 if (htab
->elf
.dynobj
== NULL
)
2413 htab
->elf
.dynobj
= abfd
;
2414 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2419 h
->got
.refcount
+= 1;
2420 elf32_mb_hash_entry (h
)->tls_mask
|= tls_type
;
2424 if (! update_local_sym_info(abfd
, symtab_hdr
, r_symndx
, tls_type
) )
2429 case R_MICROBLAZE_GOTOFF_64
:
2430 case R_MICROBLAZE_GOTOFF_32
:
2431 if (htab
->elf
.sgot
== NULL
)
2433 if (htab
->elf
.dynobj
== NULL
)
2434 htab
->elf
.dynobj
= abfd
;
2435 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2440 case R_MICROBLAZE_64
:
2441 case R_MICROBLAZE_64_PCREL
:
2442 case R_MICROBLAZE_32
:
2444 if (h
!= NULL
&& !bfd_link_pic (info
))
2446 /* we may need a copy reloc. */
2449 /* we may also need a .plt entry. */
2450 h
->plt
.refcount
+= 1;
2451 if (ELF32_R_TYPE (rel
->r_info
) != R_MICROBLAZE_64_PCREL
)
2452 h
->pointer_equality_needed
= 1;
2456 /* If we are creating a shared library, and this is a reloc
2457 against a global symbol, or a non PC relative reloc
2458 against a local symbol, then we need to copy the reloc
2459 into the shared library. However, if we are linking with
2460 -Bsymbolic, we do not need to copy a reloc against a
2461 global symbol which is defined in an object we are
2462 including in the link (i.e., DEF_REGULAR is set). At
2463 this point we have not seen all the input files, so it is
2464 possible that DEF_REGULAR is not set now but will be set
2465 later (it is never cleared). In case of a weak definition,
2466 DEF_REGULAR may be cleared later by a strong definition in
2467 a shared library. We account for that possibility below by
2468 storing information in the relocs_copied field of the hash
2469 table entry. A similar situation occurs when creating
2470 shared libraries and symbol visibility changes render the
2473 If on the other hand, we are creating an executable, we
2474 may need to keep relocations for symbols satisfied by a
2475 dynamic library if we manage to avoid copy relocs for the
2478 if ((bfd_link_pic (info
)
2479 && (sec
->flags
& SEC_ALLOC
) != 0
2480 && (r_type
!= R_MICROBLAZE_64_PCREL
2482 && (! info
->symbolic
2483 || h
->root
.type
== bfd_link_hash_defweak
2484 || !h
->def_regular
))))
2485 || (!bfd_link_pic (info
)
2486 && (sec
->flags
& SEC_ALLOC
) != 0
2488 && (h
->root
.type
== bfd_link_hash_defweak
2489 || !h
->def_regular
)))
2491 struct elf_dyn_relocs
*p
;
2492 struct elf_dyn_relocs
**head
;
2494 /* When creating a shared object, we must copy these
2495 relocs into the output file. We create a reloc
2496 section in dynobj and make room for the reloc. */
2502 if (htab
->elf
.dynobj
== NULL
)
2503 htab
->elf
.dynobj
= abfd
;
2504 dynobj
= htab
->elf
.dynobj
;
2506 sreloc
= _bfd_elf_make_dynamic_reloc_section (sec
, dynobj
,
2512 /* If this is a global symbol, we count the number of
2513 relocations we need for this symbol. */
2515 head
= &h
->dyn_relocs
;
2518 /* Track dynamic relocs needed for local syms too.
2519 We really need local syms available to do this
2523 Elf_Internal_Sym
*isym
;
2526 isym
= bfd_sym_from_r_symndx (&htab
->sym_sec
,
2531 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2535 vpp
= &elf_section_data (s
)->local_dynrel
;
2536 head
= (struct elf_dyn_relocs
**) vpp
;
2540 if (p
== NULL
|| p
->sec
!= sec
)
2542 size_t amt
= sizeof *p
;
2543 p
= ((struct elf_dyn_relocs
*)
2544 bfd_alloc (htab
->elf
.dynobj
, amt
));
2555 if (r_type
== R_MICROBLAZE_64_PCREL
)
2566 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2569 microblaze_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2570 struct elf_link_hash_entry
*dir
,
2571 struct elf_link_hash_entry
*ind
)
2573 struct elf32_mb_link_hash_entry
*edir
, *eind
;
2575 edir
= (struct elf32_mb_link_hash_entry
*) dir
;
2576 eind
= (struct elf32_mb_link_hash_entry
*) ind
;
2578 if (ind
->dyn_relocs
!= NULL
)
2580 if (dir
->dyn_relocs
!= NULL
)
2582 struct elf_dyn_relocs
**pp
;
2583 struct elf_dyn_relocs
*p
;
2585 if (ind
->root
.type
== bfd_link_hash_indirect
)
2588 /* Add reloc counts against the weak sym to the strong sym
2589 list. Merge any entries against the same section. */
2590 for (pp
= &ind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2592 struct elf_dyn_relocs
*q
;
2594 for (q
= dir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2595 if (q
->sec
== p
->sec
)
2597 q
->pc_count
+= p
->pc_count
;
2598 q
->count
+= p
->count
;
2605 *pp
= dir
->dyn_relocs
;
2608 dir
->dyn_relocs
= ind
->dyn_relocs
;
2609 ind
->dyn_relocs
= NULL
;
2612 edir
->tls_mask
|= eind
->tls_mask
;
2614 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2617 /* Find dynamic relocs for H that apply to read-only sections. */
2620 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
2622 struct elf_dyn_relocs
*p
;
2624 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2626 asection
*s
= p
->sec
->output_section
;
2628 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2635 microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2636 struct elf_link_hash_entry
*h
)
2638 struct elf32_mb_link_hash_table
*htab
;
2640 unsigned int power_of_two
;
2642 htab
= elf32_mb_hash_table (info
);
2646 /* If this is a function, put it in the procedure linkage table. We
2647 will fill in the contents of the procedure linkage table later,
2648 when we know the address of the .got section. */
2649 if (h
->type
== STT_FUNC
2652 if (h
->plt
.refcount
<= 0
2653 || SYMBOL_CALLS_LOCAL (info
, h
)
2654 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2655 && h
->root
.type
== bfd_link_hash_undefweak
))
2657 /* This case can occur if we saw a PLT reloc in an input
2658 file, but the symbol was never referred to by a dynamic
2659 object, or if all references were garbage collected. In
2660 such a case, we don't actually need to build a procedure
2661 linkage table, and we can just do a PC32 reloc instead. */
2662 h
->plt
.offset
= (bfd_vma
) -1;
2669 /* It's possible that we incorrectly decided a .plt reloc was
2670 needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in
2671 check_relocs. We can't decide accurately between function and
2672 non-function syms in check-relocs; Objects loaded later in
2673 the link may change h->type. So fix it now. */
2674 h
->plt
.offset
= (bfd_vma
) -1;
2676 /* If this is a weak symbol, and there is a real definition, the
2677 processor independent code will have arranged for us to see the
2678 real definition first, and we can just use the same value. */
2679 if (h
->is_weakalias
)
2681 struct elf_link_hash_entry
*def
= weakdef (h
);
2682 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2683 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2684 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2688 /* This is a reference to a symbol defined by a dynamic object which
2689 is not a function. */
2691 /* If we are creating a shared library, we must presume that the
2692 only references to the symbol are via the global offset table.
2693 For such cases we need not do anything here; the relocations will
2694 be handled correctly by relocate_section. */
2695 if (bfd_link_pic (info
))
2698 /* If there are no references to this symbol that do not use the
2699 GOT, we don't need to generate a copy reloc. */
2700 if (!h
->non_got_ref
)
2703 /* If -z nocopyreloc was given, we won't generate them either. */
2704 if (info
->nocopyreloc
)
2710 /* If we don't find any dynamic relocs in read-only sections, then
2711 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2712 if (!readonly_dynrelocs (h
))
2718 /* We must allocate the symbol in our .dynbss section, which will
2719 become part of the .bss section of the executable. There will be
2720 an entry for this symbol in the .dynsym section. The dynamic
2721 object will contain position independent code, so all references
2722 from the dynamic object to this symbol will go through the global
2723 offset table. The dynamic linker will use the .dynsym entry to
2724 determine the address it must put in the global offset table, so
2725 both the dynamic object and the regular object will refer to the
2726 same memory location for the variable. */
2728 /* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker
2729 to copy the initial value out of the dynamic object and into the
2730 runtime process image. */
2731 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2733 s
= htab
->elf
.sdynrelro
;
2734 srel
= htab
->elf
.sreldynrelro
;
2738 s
= htab
->elf
.sdynbss
;
2739 srel
= htab
->elf
.srelbss
;
2741 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
2743 srel
->size
+= sizeof (Elf32_External_Rela
);
2747 /* We need to figure out the alignment required for this symbol. I
2748 have no idea how ELF linkers handle this. */
2749 power_of_two
= bfd_log2 (h
->size
);
2750 if (power_of_two
> 3)
2753 /* Apply the required alignment. */
2754 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
2755 if (power_of_two
> s
->alignment_power
)
2757 if (!bfd_set_section_alignment (s
, power_of_two
))
2761 /* Define the symbol as being at this point in the section. */
2762 h
->root
.u
.def
.section
= s
;
2763 h
->root
.u
.def
.value
= s
->size
;
2765 /* Increment the section size to make room for the symbol. */
2770 /* Allocate space in .plt, .got and associated reloc sections for
2774 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * dat
)
2776 struct bfd_link_info
*info
;
2777 struct elf32_mb_link_hash_table
*htab
;
2778 struct elf32_mb_link_hash_entry
*eh
;
2779 struct elf_dyn_relocs
*p
;
2781 if (h
->root
.type
== bfd_link_hash_indirect
)
2784 info
= (struct bfd_link_info
*) dat
;
2785 htab
= elf32_mb_hash_table (info
);
2789 if (htab
->elf
.dynamic_sections_created
2790 && h
->plt
.refcount
> 0)
2792 /* Make sure this symbol is output as a dynamic symbol.
2793 Undefined weak syms won't yet be marked as dynamic. */
2794 if (h
->dynindx
== -1
2795 && !h
->forced_local
)
2797 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2801 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
2803 asection
*s
= htab
->elf
.splt
;
2805 /* The first entry in .plt is reserved. */
2807 s
->size
= PLT_ENTRY_SIZE
;
2809 h
->plt
.offset
= s
->size
;
2811 /* If this symbol is not defined in a regular file, and we are
2812 not generating a shared library, then set the symbol to this
2813 location in the .plt. This is required to make function
2814 pointers compare as equal between the normal executable and
2815 the shared library. */
2816 if (! bfd_link_pic (info
)
2819 h
->root
.u
.def
.section
= s
;
2820 h
->root
.u
.def
.value
= h
->plt
.offset
;
2823 /* Make room for this entry. */
2824 s
->size
+= PLT_ENTRY_SIZE
;
2826 /* We also need to make an entry in the .got.plt section, which
2827 will be placed in the .got section by the linker script. */
2828 htab
->elf
.sgotplt
->size
+= 4;
2830 /* We also need to make an entry in the .rel.plt section. */
2831 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2835 h
->plt
.offset
= (bfd_vma
) -1;
2841 h
->plt
.offset
= (bfd_vma
) -1;
2845 eh
= (struct elf32_mb_link_hash_entry
*) h
;
2846 if (h
->got
.refcount
> 0)
2851 /* Make sure this symbol is output as a dynamic symbol.
2852 Undefined weak syms won't yet be marked as dynamic. */
2853 if (h
->dynindx
== -1
2854 && !h
->forced_local
)
2856 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2861 if ((eh
->tls_mask
& TLS_TLS
) != 0)
2863 /* Handle TLS Symbol */
2864 if ((eh
->tls_mask
& TLS_LD
) != 0)
2866 if (!eh
->elf
.def_dynamic
)
2867 /* We'll just use htab->tlsld_got.offset. This should
2868 always be the case. It's a little odd if we have
2869 a local dynamic reloc against a non-local symbol. */
2870 htab
->tlsld_got
.refcount
+= 1;
2874 if ((eh
->tls_mask
& TLS_GD
) != 0)
2879 /* Regular (non-TLS) symbol */
2884 h
->got
.offset
= (bfd_vma
) -1;
2889 h
->got
.offset
= s
->size
;
2891 htab
->elf
.srelgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
2895 h
->got
.offset
= (bfd_vma
) -1;
2897 if (h
->dyn_relocs
== NULL
)
2900 /* In the shared -Bsymbolic case, discard space allocated for
2901 dynamic pc-relative relocs against symbols which turn out to be
2902 defined in regular objects. For the normal shared case, discard
2903 space for pc-relative relocs that have become local due to symbol
2904 visibility changes. */
2906 if (bfd_link_pic (info
))
2912 struct elf_dyn_relocs
**pp
;
2914 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
2916 p
->count
-= p
->pc_count
;
2924 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2925 h
->dyn_relocs
= NULL
;
2929 /* For the non-shared case, discard space for relocs against
2930 symbols which turn out to need copy relocs or are not
2936 || (htab
->elf
.dynamic_sections_created
2937 && (h
->root
.type
== bfd_link_hash_undefweak
2938 || h
->root
.type
== bfd_link_hash_undefined
))))
2940 /* Make sure this symbol is output as a dynamic symbol.
2941 Undefined weak syms won't yet be marked as dynamic. */
2942 if (h
->dynindx
== -1
2943 && !h
->forced_local
)
2945 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2949 /* If that succeeded, we know we'll be keeping all the
2951 if (h
->dynindx
!= -1)
2955 h
->dyn_relocs
= NULL
;
2960 /* Finally, allocate space. */
2961 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2963 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2964 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2970 /* Set the sizes of the dynamic sections. */
2973 microblaze_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2974 struct bfd_link_info
*info
)
2976 struct elf32_mb_link_hash_table
*htab
;
2981 htab
= elf32_mb_hash_table (info
);
2985 dynobj
= htab
->elf
.dynobj
;
2986 BFD_ASSERT (dynobj
!= NULL
);
2988 /* Set up .got offsets for local syms, and space for local dynamic
2990 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2992 bfd_signed_vma
*local_got
;
2993 bfd_signed_vma
*end_local_got
;
2994 bfd_size_type locsymcount
;
2995 Elf_Internal_Shdr
*symtab_hdr
;
2996 unsigned char *lgot_masks
;
2999 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
3002 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3004 struct elf_dyn_relocs
*p
;
3006 for (p
= ((struct elf_dyn_relocs
*)
3007 elf_section_data (s
)->local_dynrel
);
3011 if (!bfd_is_abs_section (p
->sec
)
3012 && bfd_is_abs_section (p
->sec
->output_section
))
3014 /* Input section has been discarded, either because
3015 it is a copy of a linkonce section or due to
3016 linker script /DISCARD/, so we'll be discarding
3019 else if (p
->count
!= 0)
3021 srel
= elf_section_data (p
->sec
)->sreloc
;
3022 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3023 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3024 info
->flags
|= DF_TEXTREL
;
3029 local_got
= elf_local_got_refcounts (ibfd
);
3033 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
3034 locsymcount
= symtab_hdr
->sh_info
;
3035 end_local_got
= local_got
+ locsymcount
;
3036 lgot_masks
= (unsigned char *) end_local_got
;
3038 srel
= htab
->elf
.srelgot
;
3040 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
3044 unsigned int need
= 0;
3045 if ((*lgot_masks
& TLS_TLS
) != 0)
3047 if ((*lgot_masks
& TLS_GD
) != 0)
3049 if ((*lgot_masks
& TLS_LD
) != 0)
3050 htab
->tlsld_got
.refcount
+= 1;
3057 *local_got
= (bfd_vma
) -1;
3061 *local_got
= s
->size
;
3063 if (bfd_link_pic (info
))
3064 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
3068 *local_got
= (bfd_vma
) -1;
3072 /* Allocate global sym .plt and .got entries, and space for global
3073 sym dynamic relocs. */
3074 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
3076 if (htab
->tlsld_got
.refcount
> 0)
3078 htab
->tlsld_got
.offset
= htab
->elf
.sgot
->size
;
3079 htab
->elf
.sgot
->size
+= 8;
3080 if (bfd_link_pic (info
))
3081 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3084 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
3086 if (elf_hash_table (info
)->dynamic_sections_created
)
3088 /* Make space for the trailing nop in .plt. */
3089 if (htab
->elf
.splt
->size
> 0)
3090 htab
->elf
.splt
->size
+= 4;
3093 /* The check_relocs and adjust_dynamic_symbol entry points have
3094 determined the sizes of the various dynamic sections. Allocate
3096 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3099 bfd_boolean strip
= FALSE
;
3101 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3104 /* It's OK to base decisions on the section name, because none
3105 of the dynobj section names depend upon the input files. */
3106 name
= bfd_section_name (s
);
3108 if (strncmp (name
, ".rela", 5) == 0)
3112 /* If we don't need this section, strip it from the
3113 output file. This is to handle .rela.bss and
3114 .rela.plt. We must create it in
3115 create_dynamic_sections, because it must be created
3116 before the linker maps input sections to output
3117 sections. The linker does that before
3118 adjust_dynamic_symbol is called, and it is that
3119 function which decides whether anything needs to go
3120 into these sections. */
3125 /* We use the reloc_count field as a counter if we need
3126 to copy relocs into the output file. */
3130 else if (s
!= htab
->elf
.splt
3131 && s
!= htab
->elf
.sgot
3132 && s
!= htab
->elf
.sgotplt
3133 && s
!= htab
->elf
.sdynbss
3134 && s
!= htab
->elf
.sdynrelro
)
3136 /* It's not one of our sections, so don't allocate space. */
3142 s
->flags
|= SEC_EXCLUDE
;
3146 /* Allocate memory for the section contents. */
3147 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3148 Unused entries should be reclaimed before the section's contents
3149 are written out, but at the moment this does not happen. Thus in
3150 order to prevent writing out garbage, we initialise the section's
3151 contents to zero. */
3152 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
3153 if (s
->contents
== NULL
&& s
->size
!= 0)
3157 if (elf_hash_table (info
)->dynamic_sections_created
)
3159 /* Add some entries to the .dynamic section. We fill in the
3160 values later, in microblaze_elf_finish_dynamic_sections, but we
3161 must add the entries now so that we get the correct size for
3162 the .dynamic section. The DT_DEBUG entry is filled in by the
3163 dynamic linker and used by the debugger. */
3164 #define add_dynamic_entry(TAG, VAL) \
3165 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3167 if (bfd_link_executable (info
))
3169 if (!add_dynamic_entry (DT_DEBUG
, 0))
3173 if (!add_dynamic_entry (DT_RELA
, 0)
3174 || !add_dynamic_entry (DT_RELASZ
, 0)
3175 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3178 if (htab
->elf
.splt
->size
!= 0)
3180 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3181 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3182 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3183 || !add_dynamic_entry (DT_JMPREL
, 0)
3184 || !add_dynamic_entry (DT_BIND_NOW
, 1))
3188 if (info
->flags
& DF_TEXTREL
)
3190 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3194 #undef add_dynamic_entry
3198 /* Finish up dynamic symbol handling. We set the contents of various
3199 dynamic sections here. */
3202 microblaze_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3203 struct bfd_link_info
*info
,
3204 struct elf_link_hash_entry
*h
,
3205 Elf_Internal_Sym
*sym
)
3207 struct elf32_mb_link_hash_table
*htab
;
3208 struct elf32_mb_link_hash_entry
*eh
= elf32_mb_hash_entry(h
);
3210 htab
= elf32_mb_hash_table (info
);
3214 if (h
->plt
.offset
!= (bfd_vma
) -1)
3219 Elf_Internal_Rela rela
;
3225 /* This symbol has an entry in the procedure linkage table. Set
3227 BFD_ASSERT (h
->dynindx
!= -1);
3229 splt
= htab
->elf
.splt
;
3230 srela
= htab
->elf
.srelplt
;
3231 sgotplt
= htab
->elf
.sgotplt
;
3232 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
&& sgotplt
!= NULL
);
3234 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1; /* first entry reserved. */
3235 got_offset
= (plt_index
+ 3) * 4; /* 3 reserved ??? */
3236 got_addr
= got_offset
;
3238 /* For non-PIC objects we need absolute address of the GOT entry. */
3239 if (!bfd_link_pic (info
))
3240 got_addr
+= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
;
3242 /* Fill in the entry in the procedure linkage table. */
3243 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD_0
+ ((got_addr
>> 16) & 0xffff),
3244 splt
->contents
+ h
->plt
.offset
);
3245 if (bfd_link_pic (info
))
3246 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD_1
+ (got_addr
& 0xffff),
3247 splt
->contents
+ h
->plt
.offset
+ 4);
3249 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD_1_NOPIC
+ (got_addr
& 0xffff),
3250 splt
->contents
+ h
->plt
.offset
+ 4);
3251 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD_2
,
3252 splt
->contents
+ h
->plt
.offset
+ 8);
3253 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD_3
,
3254 splt
->contents
+ h
->plt
.offset
+ 12);
3256 /* Any additions to the .got section??? */
3257 /* bfd_put_32 (output_bfd,
3258 splt->output_section->vma + splt->output_offset + h->plt.offset + 4,
3259 sgotplt->contents + got_offset); */
3261 /* Fill in the entry in the .rela.plt section. */
3262 rela
.r_offset
= (sgotplt
->output_section
->vma
3263 + sgotplt
->output_offset
3265 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MICROBLAZE_JUMP_SLOT
);
3267 loc
= srela
->contents
;
3268 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3269 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3271 if (!h
->def_regular
)
3273 /* Mark the symbol as undefined, rather than as defined in
3274 the .plt section. Zero the value. */
3275 sym
->st_shndx
= SHN_UNDEF
;
3280 /* h->got.refcount to be checked ? */
3281 if (h
->got
.offset
!= (bfd_vma
) -1 &&
3282 ! ((h
->got
.offset
& 1) ||
3283 IS_TLS_LD(eh
->tls_mask
) || IS_TLS_GD(eh
->tls_mask
)))
3289 /* This symbol has an entry in the global offset table. Set it
3292 sgot
= htab
->elf
.sgot
;
3293 srela
= htab
->elf
.srelgot
;
3294 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3296 offset
= (sgot
->output_section
->vma
+ sgot
->output_offset
3297 + (h
->got
.offset
&~ (bfd_vma
) 1));
3299 /* If this is a -Bsymbolic link, and the symbol is defined
3300 locally, we just want to emit a RELATIVE reloc. Likewise if
3301 the symbol was forced to be local because of a version file.
3302 The entry in the global offset table will already have been
3303 initialized in the relocate_section function. */
3304 if (bfd_link_pic (info
)
3305 && ((info
->symbolic
&& h
->def_regular
)
3306 || h
->dynindx
== -1))
3308 asection
*sec
= h
->root
.u
.def
.section
;
3311 value
= h
->root
.u
.def
.value
;
3312 if (sec
->output_section
!= NULL
)
3313 /* PR 21180: If the output section is NULL, then the symbol is no
3314 longer needed, and in theory the GOT entry is redundant. But
3315 it is too late to change our minds now... */
3316 value
+= sec
->output_section
->vma
+ sec
->output_offset
;
3318 microblaze_elf_output_dynamic_relocation (output_bfd
,
3319 srela
, srela
->reloc_count
++,
3321 R_MICROBLAZE_REL
, offset
,
3326 microblaze_elf_output_dynamic_relocation (output_bfd
,
3327 srela
, srela
->reloc_count
++,
3329 R_MICROBLAZE_GLOB_DAT
,
3333 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
3334 sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1));
3340 Elf_Internal_Rela rela
;
3343 /* This symbols needs a copy reloc. Set it up. */
3345 BFD_ASSERT (h
->dynindx
!= -1);
3347 rela
.r_offset
= (h
->root
.u
.def
.value
3348 + h
->root
.u
.def
.section
->output_section
->vma
3349 + h
->root
.u
.def
.section
->output_offset
);
3350 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MICROBLAZE_COPY
);
3352 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
3353 s
= htab
->elf
.sreldynrelro
;
3355 s
= htab
->elf
.srelbss
;
3356 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3357 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3360 /* Mark some specially defined symbols as absolute. */
3361 if (h
== htab
->elf
.hdynamic
3362 || h
== htab
->elf
.hgot
3363 || h
== htab
->elf
.hplt
)
3364 sym
->st_shndx
= SHN_ABS
;
3370 /* Finish up the dynamic sections. */
3373 microblaze_elf_finish_dynamic_sections (bfd
*output_bfd
,
3374 struct bfd_link_info
*info
)
3377 asection
*sdyn
, *sgot
;
3378 struct elf32_mb_link_hash_table
*htab
;
3380 htab
= elf32_mb_hash_table (info
);
3384 dynobj
= htab
->elf
.dynobj
;
3386 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3388 if (htab
->elf
.dynamic_sections_created
)
3391 Elf32_External_Dyn
*dyncon
, *dynconend
;
3393 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3394 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3395 for (; dyncon
< dynconend
; dyncon
++)
3397 Elf_Internal_Dyn dyn
;
3401 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3406 s
= htab
->elf
.sgotplt
;
3411 s
= htab
->elf
.srelplt
;
3416 s
= htab
->elf
.srelplt
;
3429 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3431 dyn
.d_un
.d_val
= s
->size
;
3433 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3436 splt
= htab
->elf
.splt
;
3437 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
3439 /* Clear the first entry in the procedure linkage table,
3440 and put a nop in the last four bytes. */
3443 memset (splt
->contents
, 0, PLT_ENTRY_SIZE
);
3444 bfd_put_32 (output_bfd
, (bfd_vma
) 0x80000000 /* nop. */,
3445 splt
->contents
+ splt
->size
- 4);
3447 if (splt
->output_section
!= bfd_abs_section_ptr
)
3448 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
3452 /* Set the first entry in the global offset table to the address of
3453 the dynamic section. */
3454 sgot
= htab
->elf
.sgotplt
;
3455 if (sgot
&& sgot
->size
> 0)
3458 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3460 bfd_put_32 (output_bfd
,
3461 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3463 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3466 if (htab
->elf
.sgot
&& htab
->elf
.sgot
->size
> 0)
3467 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3472 /* Hook called by the linker routine which adds symbols from an object
3473 file. We use it to put .comm items in .sbss, and not .bss. */
3476 microblaze_elf_add_symbol_hook (bfd
*abfd
,
3477 struct bfd_link_info
*info
,
3478 Elf_Internal_Sym
*sym
,
3479 const char **namep ATTRIBUTE_UNUSED
,
3480 flagword
*flagsp ATTRIBUTE_UNUSED
,
3484 if (sym
->st_shndx
== SHN_COMMON
3485 && !bfd_link_relocatable (info
)
3486 && sym
->st_size
<= elf_gp_size (abfd
))
3488 /* Common symbols less than or equal to -G nn bytes are automatically
3490 *secp
= bfd_make_section_old_way (abfd
, ".sbss");
3492 || !bfd_set_section_flags (*secp
, SEC_IS_COMMON
))
3495 *valp
= sym
->st_size
;
3501 #define TARGET_LITTLE_SYM microblaze_elf32_le_vec
3502 #define TARGET_LITTLE_NAME "elf32-microblazeel"
3504 #define TARGET_BIG_SYM microblaze_elf32_vec
3505 #define TARGET_BIG_NAME "elf32-microblaze"
3507 #define ELF_ARCH bfd_arch_microblaze
3508 #define ELF_TARGET_ID MICROBLAZE_ELF_DATA
3509 #define ELF_MACHINE_CODE EM_MICROBLAZE
3510 #define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD
3511 #define ELF_MAXPAGESIZE 0x1000
3512 #define elf_info_to_howto microblaze_elf_info_to_howto
3513 #define elf_info_to_howto_rel NULL
3515 #define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup
3516 #define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name
3517 #define elf_backend_relocate_section microblaze_elf_relocate_section
3518 #define bfd_elf32_bfd_relax_section microblaze_elf_relax_section
3519 #define bfd_elf32_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
3520 #define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup
3522 #define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook
3523 #define elf_backend_check_relocs microblaze_elf_check_relocs
3524 #define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol
3525 #define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create
3526 #define elf_backend_can_gc_sections 1
3527 #define elf_backend_can_refcount 1
3528 #define elf_backend_want_got_plt 1
3529 #define elf_backend_plt_readonly 1
3530 #define elf_backend_got_header_size 12
3531 #define elf_backend_want_dynrelro 1
3532 #define elf_backend_rela_normal 1
3533 #define elf_backend_dtrel_excludes_plt 1
3535 #define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol
3536 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3537 #define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections
3538 #define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol
3539 #define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections
3540 #define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook
3542 #include "elf32-target.h"