1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
34 #include "elf32-ppc.h"
35 #include "elf-vxworks.h"
37 /* RELA relocations are used here. */
39 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc_elf_unhandled_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 /* Branch prediction bit for branch taken relocs. */
45 #define BRANCH_PREDICT_BIT 0x200000
46 /* Mask to set RA in memory instructions. */
47 #define RA_REGISTER_MASK 0x001f0000
48 /* Value to shift register by to insert RA. */
49 #define RA_REGISTER_SHIFT 16
51 /* The name of the dynamic interpreter. This is put in the .interp
53 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
55 /* For old-style PLT. */
56 /* The number of single-slot PLT entries (the rest use two slots). */
57 #define PLT_NUM_SINGLE_ENTRIES 8192
59 /* For new-style .glink and .plt. */
60 #define GLINK_PLTRESOLVE 16*4
61 #define GLINK_ENTRY_SIZE 4*4
63 /* VxWorks uses its own plt layout, filled in by the static linker. */
65 /* The standard VxWorks PLT entry. */
66 #define VXWORKS_PLT_ENTRY_SIZE 32
67 static const bfd_vma ppc_elf_vxworks_plt_entry
68 [VXWORKS_PLT_ENTRY_SIZE / 4] =
70 0x3d800000, /* lis r12,0 */
71 0x818c0000, /* lwz r12,0(r12) */
72 0x7d8903a6, /* mtctr r12 */
73 0x4e800420, /* bctr */
74 0x39600000, /* li r11,0 */
75 0x48000000, /* b 14 <.PLT0resolve+0x4> */
79 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
80 [VXWORKS_PLT_ENTRY_SIZE / 4] =
82 0x3d9e0000, /* addis r12,r30,0 */
83 0x818c0000, /* lwz r12,0(r12) */
84 0x7d8903a6, /* mtctr r12 */
85 0x4e800420, /* bctr */
86 0x39600000, /* li r11,0 */
87 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
92 /* The initial VxWorks PLT entry. */
93 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
94 static const bfd_vma ppc_elf_vxworks_plt0_entry
95 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
97 0x3d800000, /* lis r12,0 */
98 0x398c0000, /* addi r12,r12,0 */
99 0x800c0008, /* lwz r0,8(r12) */
100 0x7c0903a6, /* mtctr r0 */
101 0x818c0004, /* lwz r12,4(r12) */
102 0x4e800420, /* bctr */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
106 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
107 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
109 0x819e0008, /* lwz r12,8(r30) */
110 0x7d8903a6, /* mtctr r12 */
111 0x819e0004, /* lwz r12,4(r30) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
119 /* For executables, we have some additional relocations in
120 .rela.plt.unloaded, for the kernel loader. */
122 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
123 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
124 /* The number of relocations in the PLTResolve slot. */
125 #define VXWORKS_PLTRESOLVE_RELOCS 2
126 /* The number of relocations in the PLTResolve slot when when creating
128 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
130 /* Some instructions. */
131 #define ADDIS_11_11 0x3d6b0000
132 #define ADDIS_11_30 0x3d7e0000
133 #define ADDIS_12_12 0x3d8c0000
134 #define ADDI_11_11 0x396b0000
135 #define ADD_0_11_11 0x7c0b5a14
136 #define ADD_11_0_11 0x7d605a14
138 #define BCL_20_31 0x429f0005
139 #define BCTR 0x4e800420
140 #define LIS_11 0x3d600000
141 #define LIS_12 0x3d800000
142 #define LWZU_0_12 0x840c0000
143 #define LWZ_0_12 0x800c0000
144 #define LWZ_11_11 0x816b0000
145 #define LWZ_11_30 0x817e0000
146 #define LWZ_12_12 0x818c0000
147 #define MFLR_0 0x7c0802a6
148 #define MFLR_12 0x7d8802a6
149 #define MTCTR_0 0x7c0903a6
150 #define MTCTR_11 0x7d6903a6
151 #define MTLR_0 0x7c0803a6
152 #define NOP 0x60000000
153 #define SUB_11_11_12 0x7d6c5850
155 /* Offset of tp and dtp pointers from start of TLS block. */
156 #define TP_OFFSET 0x7000
157 #define DTP_OFFSET 0x8000
159 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
161 static reloc_howto_type ppc_elf_howto_raw[] = {
162 /* This reloc does nothing. */
163 HOWTO (R_PPC_NONE, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE, /* pc_relative */
169 complain_overflow_bitfield, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_PPC_NONE", /* name */
172 FALSE, /* partial_inplace */
175 FALSE), /* pcrel_offset */
177 /* A standard 32 bit relocation. */
178 HOWTO (R_PPC_ADDR32, /* type */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
182 FALSE, /* pc_relative */
184 complain_overflow_bitfield, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_PPC_ADDR32", /* name */
187 FALSE, /* partial_inplace */
189 0xffffffff, /* dst_mask */
190 FALSE), /* pcrel_offset */
192 /* An absolute 26 bit branch; the lower two bits must be zero.
193 FIXME: we don't check that, we just clear them. */
194 HOWTO (R_PPC_ADDR24, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR24", /* name */
203 FALSE, /* partial_inplace */
205 0x3fffffc, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 /* A standard 16 bit relocation. */
209 HOWTO (R_PPC_ADDR16, /* type */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
213 FALSE, /* pc_relative */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR16", /* name */
218 FALSE, /* partial_inplace */
220 0xffff, /* dst_mask */
221 FALSE), /* pcrel_offset */
223 /* A 16 bit relocation without overflow. */
224 HOWTO (R_PPC_ADDR16_LO, /* type */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE, /* pc_relative */
230 complain_overflow_dont,/* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR16_LO", /* name */
233 FALSE, /* partial_inplace */
235 0xffff, /* dst_mask */
236 FALSE), /* pcrel_offset */
238 /* The high order 16 bits of an address. */
239 HOWTO (R_PPC_ADDR16_HI, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE, /* pc_relative */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16_HI", /* name */
248 FALSE, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
253 /* The high order 16 bits of an address, plus 1 if the contents of
254 the low 16 bits, treated as a signed number, is negative. */
255 HOWTO (R_PPC_ADDR16_HA, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_dont, /* complain_on_overflow */
262 ppc_elf_addr16_ha_reloc, /* special_function */
263 "R_PPC_ADDR16_HA", /* name */
264 FALSE, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE), /* pcrel_offset */
269 /* An absolute 16 bit branch; the lower two bits must be zero.
270 FIXME: we don't check that, we just clear them. */
271 HOWTO (R_PPC_ADDR14, /* type */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_bitfield, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR14", /* name */
280 FALSE, /* partial_inplace */
282 0xfffc, /* dst_mask */
283 FALSE), /* pcrel_offset */
285 /* An absolute 16 bit branch, for which bit 10 should be set to
286 indicate that the branch is expected to be taken. The lower two
287 bits must be zero. */
288 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE, /* pc_relative */
294 complain_overflow_bitfield, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC_ADDR14_BRTAKEN",/* name */
297 FALSE, /* partial_inplace */
299 0xfffc, /* dst_mask */
300 FALSE), /* pcrel_offset */
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is not expected to be taken. The lower
304 two bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC_ADDR14_BRNTAKEN",/* name */
314 FALSE, /* partial_inplace */
316 0xfffc, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A relative 26 bit branch; the lower two bits must be zero. */
320 HOWTO (R_PPC_REL24, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 TRUE, /* pc_relative */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_REL24", /* name */
329 FALSE, /* partial_inplace */
331 0x3fffffc, /* dst_mask */
332 TRUE), /* pcrel_offset */
334 /* A relative 16 bit branch; the lower two bits must be zero. */
335 HOWTO (R_PPC_REL14, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 TRUE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_REL14", /* name */
344 FALSE, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 TRUE), /* pcrel_offset */
349 /* A relative 16 bit branch. Bit 10 should be set to indicate that
350 the branch is expected to be taken. The lower two bits must be
352 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 TRUE, /* pc_relative */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL14_BRTAKEN", /* name */
361 FALSE, /* partial_inplace */
363 0xfffc, /* dst_mask */
364 TRUE), /* pcrel_offset */
366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
367 the branch is not expected to be taken. The lower two bits must
369 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE, /* pc_relative */
375 complain_overflow_signed, /* complain_on_overflow */
376 bfd_elf_generic_reloc, /* special_function */
377 "R_PPC_REL14_BRNTAKEN",/* name */
378 FALSE, /* partial_inplace */
380 0xfffc, /* dst_mask */
381 TRUE), /* pcrel_offset */
383 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
385 HOWTO (R_PPC_GOT16, /* type */
387 1, /* size (0 = byte, 1 = short, 2 = long) */
389 FALSE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_GOT16", /* name */
394 FALSE, /* partial_inplace */
396 0xffff, /* dst_mask */
397 FALSE), /* pcrel_offset */
399 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
401 HOWTO (R_PPC_GOT16_LO, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16_LO", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_HI, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE, /* pc_relative */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_HI", /* name */
426 FALSE, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HA, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE, /* pc_relative */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 ppc_elf_addr16_ha_reloc, /* special_function */
441 "R_PPC_GOT16_HA", /* name */
442 FALSE, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
447 /* Like R_PPC_REL24, but referring to the procedure linkage table
448 entry for the symbol. */
449 HOWTO (R_PPC_PLTREL24, /* type */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
453 TRUE, /* pc_relative */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_PPC_PLTREL24", /* name */
458 FALSE, /* partial_inplace */
460 0x3fffffc, /* dst_mask */
461 TRUE), /* pcrel_offset */
463 /* This is used only by the dynamic linker. The symbol should exist
464 both in the object being run and in some shared library. The
465 dynamic linker copies the data addressed by the symbol from the
466 shared library into the object, because the object being
467 run has to have the data at some particular address. */
468 HOWTO (R_PPC_COPY, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_bitfield, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_PPC_COPY", /* name */
477 FALSE, /* partial_inplace */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC_ADDR32, but used when setting global offset table
484 HOWTO (R_PPC_GLOB_DAT, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_GLOB_DAT", /* name */
493 FALSE, /* partial_inplace */
495 0xffffffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Marks a procedure linkage table entry for a symbol. */
499 HOWTO (R_PPC_JMP_SLOT, /* type */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE, /* pc_relative */
505 complain_overflow_bitfield, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_PPC_JMP_SLOT", /* name */
508 FALSE, /* partial_inplace */
511 FALSE), /* pcrel_offset */
513 /* Used only by the dynamic linker. When the object is run, this
514 longword is set to the load address of the object, plus the
516 HOWTO (R_PPC_RELATIVE, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE, /* pc_relative */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_RELATIVE", /* name */
525 FALSE, /* partial_inplace */
527 0xffffffff, /* dst_mask */
528 FALSE), /* pcrel_offset */
530 /* Like R_PPC_REL24, but uses the value of the symbol within the
531 object rather than the final value. Normally used for
532 _GLOBAL_OFFSET_TABLE_. */
533 HOWTO (R_PPC_LOCAL24PC, /* type */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
537 TRUE, /* pc_relative */
539 complain_overflow_signed, /* complain_on_overflow */
540 bfd_elf_generic_reloc, /* special_function */
541 "R_PPC_LOCAL24PC", /* name */
542 FALSE, /* partial_inplace */
544 0x3fffffc, /* dst_mask */
545 TRUE), /* pcrel_offset */
547 /* Like R_PPC_ADDR32, but may be unaligned. */
548 HOWTO (R_PPC_UADDR32, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 FALSE, /* pc_relative */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_UADDR32", /* name */
557 FALSE, /* partial_inplace */
559 0xffffffff, /* dst_mask */
560 FALSE), /* pcrel_offset */
562 /* Like R_PPC_ADDR16, but may be unaligned. */
563 HOWTO (R_PPC_UADDR16, /* type */
565 1, /* size (0 = byte, 1 = short, 2 = long) */
567 FALSE, /* pc_relative */
569 complain_overflow_bitfield, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_UADDR16", /* name */
572 FALSE, /* partial_inplace */
574 0xffff, /* dst_mask */
575 FALSE), /* pcrel_offset */
577 /* 32-bit PC relative */
578 HOWTO (R_PPC_REL32, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 TRUE, /* pc_relative */
584 complain_overflow_bitfield, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_REL32", /* name */
587 FALSE, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 TRUE), /* pcrel_offset */
592 /* 32-bit relocation to the symbol's procedure linkage table.
593 FIXME: not supported. */
594 HOWTO (R_PPC_PLT32, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE, /* pc_relative */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_PLT32", /* name */
603 FALSE, /* partial_inplace */
606 FALSE), /* pcrel_offset */
608 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLTREL32, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 TRUE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLTREL32", /* name */
619 FALSE, /* partial_inplace */
622 TRUE), /* pcrel_offset */
624 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
626 HOWTO (R_PPC_PLT16_LO, /* type */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE, /* pc_relative */
632 complain_overflow_dont, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLT16_LO", /* name */
635 FALSE, /* partial_inplace */
637 0xffff, /* dst_mask */
638 FALSE), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_HI, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_HI", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HA, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE, /* pc_relative */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 ppc_elf_addr16_ha_reloc, /* special_function */
666 "R_PPC_PLT16_HA", /* name */
667 FALSE, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
672 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
674 HOWTO (R_PPC_SDAREL16, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE, /* pc_relative */
680 complain_overflow_signed, /* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_PPC_SDAREL16", /* name */
683 FALSE, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
688 /* 16-bit section relative relocation. */
689 HOWTO (R_PPC_SECTOFF, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_bitfield, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC_SECTOFF", /* name */
698 FALSE, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 /* 16-bit lower half section relative relocation. */
704 HOWTO (R_PPC_SECTOFF_LO, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC_SECTOFF_LO", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* 16-bit upper half section relative relocation. */
719 HOWTO (R_PPC_SECTOFF_HI, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE, /* pc_relative */
725 complain_overflow_bitfield, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC_SECTOFF_HI", /* name */
728 FALSE, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE), /* pcrel_offset */
733 /* 16-bit upper half adjusted section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_HA, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE, /* pc_relative */
740 complain_overflow_bitfield, /* complain_on_overflow */
741 ppc_elf_addr16_ha_reloc, /* special_function */
742 "R_PPC_SECTOFF_HA", /* name */
743 FALSE, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE), /* pcrel_offset */
748 /* Marker reloc for TLS. */
751 2, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE, /* pc_relative */
755 complain_overflow_dont, /* complain_on_overflow */
756 bfd_elf_generic_reloc, /* special_function */
757 "R_PPC_TLS", /* name */
758 FALSE, /* partial_inplace */
761 FALSE), /* pcrel_offset */
763 /* Computes the load module index of the load module that contains the
764 definition of its TLS sym. */
765 HOWTO (R_PPC_DTPMOD32,
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc, /* special_function */
773 "R_PPC_DTPMOD32", /* name */
774 FALSE, /* partial_inplace */
776 0xffffffff, /* dst_mask */
777 FALSE), /* pcrel_offset */
779 /* Computes a dtv-relative displacement, the difference between the value
780 of sym+add and the base address of the thread-local storage block that
781 contains the definition of sym, minus 0x8000. */
782 HOWTO (R_PPC_DTPREL32,
784 2, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE, /* pc_relative */
788 complain_overflow_dont, /* complain_on_overflow */
789 ppc_elf_unhandled_reloc, /* special_function */
790 "R_PPC_DTPREL32", /* name */
791 FALSE, /* partial_inplace */
793 0xffffffff, /* dst_mask */
794 FALSE), /* pcrel_offset */
796 /* A 16 bit dtprel reloc. */
797 HOWTO (R_PPC_DTPREL16,
799 1, /* size (0 = byte, 1 = short, 2 = long) */
801 FALSE, /* pc_relative */
803 complain_overflow_signed, /* complain_on_overflow */
804 ppc_elf_unhandled_reloc, /* special_function */
805 "R_PPC_DTPREL16", /* name */
806 FALSE, /* partial_inplace */
808 0xffff, /* dst_mask */
809 FALSE), /* pcrel_offset */
811 /* Like DTPREL16, but no overflow. */
812 HOWTO (R_PPC_DTPREL16_LO,
814 1, /* size (0 = byte, 1 = short, 2 = long) */
816 FALSE, /* pc_relative */
818 complain_overflow_dont, /* complain_on_overflow */
819 ppc_elf_unhandled_reloc, /* special_function */
820 "R_PPC_DTPREL16_LO", /* name */
821 FALSE, /* partial_inplace */
823 0xffff, /* dst_mask */
824 FALSE), /* pcrel_offset */
826 /* Like DTPREL16_LO, but next higher group of 16 bits. */
827 HOWTO (R_PPC_DTPREL16_HI,
829 1, /* size (0 = byte, 1 = short, 2 = long) */
831 FALSE, /* pc_relative */
833 complain_overflow_dont, /* complain_on_overflow */
834 ppc_elf_unhandled_reloc, /* special_function */
835 "R_PPC_DTPREL16_HI", /* name */
836 FALSE, /* partial_inplace */
838 0xffff, /* dst_mask */
839 FALSE), /* pcrel_offset */
841 /* Like DTPREL16_HI, but adjust for low 16 bits. */
842 HOWTO (R_PPC_DTPREL16_HA,
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE, /* pc_relative */
848 complain_overflow_dont, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc, /* special_function */
850 "R_PPC_DTPREL16_HA", /* name */
851 FALSE, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
856 /* Computes a tp-relative displacement, the difference between the value of
857 sym+add and the value of the thread pointer (r13). */
858 HOWTO (R_PPC_TPREL32,
860 2, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE, /* pc_relative */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc, /* special_function */
866 "R_PPC_TPREL32", /* name */
867 FALSE, /* partial_inplace */
869 0xffffffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
872 /* A 16 bit tprel reloc. */
873 HOWTO (R_PPC_TPREL16,
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE, /* pc_relative */
879 complain_overflow_signed, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_TPREL16", /* name */
882 FALSE, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Like TPREL16, but no overflow. */
888 HOWTO (R_PPC_TPREL16_LO,
890 1, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE, /* pc_relative */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_TPREL16_LO", /* name */
897 FALSE, /* partial_inplace */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
902 /* Like TPREL16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_TPREL16_HI,
905 1, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE, /* pc_relative */
909 complain_overflow_dont, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc, /* special_function */
911 "R_PPC_TPREL16_HI", /* name */
912 FALSE, /* partial_inplace */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
917 /* Like TPREL16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_TPREL16_HA,
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_TPREL16_HA", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
934 to the first entry. */
935 HOWTO (R_PPC_GOT_TLSGD16,
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_signed, /* complain_on_overflow */
942 ppc_elf_unhandled_reloc, /* special_function */
943 "R_PPC_GOT_TLSGD16", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* Like GOT_TLSGD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSGD16_LO,
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 FALSE, /* pc_relative */
956 complain_overflow_dont, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc, /* special_function */
958 "R_PPC_GOT_TLSGD16_LO", /* name */
959 FALSE, /* partial_inplace */
961 0xffff, /* dst_mask */
962 FALSE), /* pcrel_offset */
964 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSGD16_HI,
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE, /* pc_relative */
971 complain_overflow_dont, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc, /* special_function */
973 "R_PPC_GOT_TLSGD16_HI", /* name */
974 FALSE, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
979 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSGD16_HA,
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE, /* pc_relative */
986 complain_overflow_dont, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc, /* special_function */
988 "R_PPC_GOT_TLSGD16_HA", /* name */
989 FALSE, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
994 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
995 with values (sym+add)@dtpmod and zero, and computes the offset to the
997 HOWTO (R_PPC_GOT_TLSLD16,
999 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE, /* pc_relative */
1003 complain_overflow_signed, /* complain_on_overflow */
1004 ppc_elf_unhandled_reloc, /* special_function */
1005 "R_PPC_GOT_TLSLD16", /* name */
1006 FALSE, /* partial_inplace */
1008 0xffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1011 /* Like GOT_TLSLD16, but no overflow. */
1012 HOWTO (R_PPC_GOT_TLSLD16_LO,
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 FALSE, /* pc_relative */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc_elf_unhandled_reloc, /* special_function */
1020 "R_PPC_GOT_TLSLD16_LO", /* name */
1021 FALSE, /* partial_inplace */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1026 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1027 HOWTO (R_PPC_GOT_TLSLD16_HI,
1028 16, /* rightshift */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE, /* pc_relative */
1033 complain_overflow_dont, /* complain_on_overflow */
1034 ppc_elf_unhandled_reloc, /* special_function */
1035 "R_PPC_GOT_TLSLD16_HI", /* name */
1036 FALSE, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE), /* pcrel_offset */
1041 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1042 HOWTO (R_PPC_GOT_TLSLD16_HA,
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc_elf_unhandled_reloc, /* special_function */
1050 "R_PPC_GOT_TLSLD16_HA", /* name */
1051 FALSE, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1057 the offset to the entry. */
1058 HOWTO (R_PPC_GOT_DTPREL16,
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_signed, /* complain_on_overflow */
1065 ppc_elf_unhandled_reloc, /* special_function */
1066 "R_PPC_GOT_DTPREL16", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like GOT_DTPREL16, but no overflow. */
1073 HOWTO (R_PPC_GOT_DTPREL16_LO,
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc, /* special_function */
1081 "R_PPC_GOT_DTPREL16_LO", /* name */
1082 FALSE, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1088 HOWTO (R_PPC_GOT_DTPREL16_HI,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc, /* special_function */
1096 "R_PPC_GOT_DTPREL16_HI", /* name */
1097 FALSE, /* partial_inplace */
1099 0xffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1103 HOWTO (R_PPC_GOT_DTPREL16_HA,
1104 16, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc_elf_unhandled_reloc, /* special_function */
1111 "R_PPC_GOT_DTPREL16_HA", /* name */
1112 FALSE, /* partial_inplace */
1114 0xffff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1118 offset to the entry. */
1119 HOWTO (R_PPC_GOT_TPREL16,
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_signed, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc, /* special_function */
1127 "R_PPC_GOT_TPREL16", /* name */
1128 FALSE, /* partial_inplace */
1130 0xffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like GOT_TPREL16, but no overflow. */
1134 HOWTO (R_PPC_GOT_TPREL16_LO,
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_dont, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc, /* special_function */
1142 "R_PPC_GOT_TPREL16_LO", /* name */
1143 FALSE, /* partial_inplace */
1145 0xffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1149 HOWTO (R_PPC_GOT_TPREL16_HI,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc, /* special_function */
1157 "R_PPC_GOT_TPREL16_HI", /* name */
1158 FALSE, /* partial_inplace */
1160 0xffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1164 HOWTO (R_PPC_GOT_TPREL16_HA,
1165 16, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_dont, /* complain_on_overflow */
1171 ppc_elf_unhandled_reloc, /* special_function */
1172 "R_PPC_GOT_TPREL16_HA", /* name */
1173 FALSE, /* partial_inplace */
1175 0xffff, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* The remaining relocs are from the Embedded ELF ABI, and are not
1179 in the SVR4 ELF ABI. */
1181 /* 32 bit value resulting from the addend minus the symbol. */
1182 HOWTO (R_PPC_EMB_NADDR32, /* type */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE, /* pc_relative */
1188 complain_overflow_bitfield, /* complain_on_overflow */
1189 bfd_elf_generic_reloc, /* special_function */
1190 "R_PPC_EMB_NADDR32", /* name */
1191 FALSE, /* partial_inplace */
1193 0xffffffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1196 /* 16 bit value resulting from the addend minus the symbol. */
1197 HOWTO (R_PPC_EMB_NADDR16, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_bitfield, /* complain_on_overflow */
1204 bfd_elf_generic_reloc, /* special_function */
1205 "R_PPC_EMB_NADDR16", /* name */
1206 FALSE, /* partial_inplace */
1208 0xffff, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* 16 bit value resulting from the addend minus the symbol. */
1212 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE, /* pc_relative */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC_EMB_ADDR16_LO", /* name */
1221 FALSE, /* partial_inplace */
1223 0xffff, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1226 /* The high order 16 bits of the addend minus the symbol. */
1227 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1228 16, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 "R_PPC_EMB_NADDR16_HI", /* name */
1236 FALSE, /* partial_inplace */
1238 0xffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* The high order 16 bits of the result of the addend minus the address,
1242 plus 1 if the contents of the low 16 bits, treated as a signed number,
1244 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1245 16, /* rightshift */
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 FALSE, /* pc_relative */
1250 complain_overflow_dont, /* complain_on_overflow */
1251 ppc_elf_addr16_ha_reloc, /* special_function */
1252 "R_PPC_EMB_NADDR16_HA", /* name */
1253 FALSE, /* partial_inplace */
1255 0xffff, /* dst_mask */
1256 FALSE), /* pcrel_offset */
1258 /* 16 bit value resulting from allocating a 4 byte word to hold an
1259 address in the .sdata section, and returning the offset from
1260 _SDA_BASE_ for that relocation. */
1261 HOWTO (R_PPC_EMB_SDAI16, /* type */
1263 1, /* size (0 = byte, 1 = short, 2 = long) */
1265 FALSE, /* pc_relative */
1267 complain_overflow_bitfield, /* complain_on_overflow */
1268 bfd_elf_generic_reloc, /* special_function */
1269 "R_PPC_EMB_SDAI16", /* name */
1270 FALSE, /* partial_inplace */
1272 0xffff, /* dst_mask */
1273 FALSE), /* pcrel_offset */
1275 /* 16 bit value resulting from allocating a 4 byte word to hold an
1276 address in the .sdata2 section, and returning the offset from
1277 _SDA2_BASE_ for that relocation. */
1278 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE, /* pc_relative */
1284 complain_overflow_bitfield, /* complain_on_overflow */
1285 bfd_elf_generic_reloc, /* special_function */
1286 "R_PPC_EMB_SDA2I16", /* name */
1287 FALSE, /* partial_inplace */
1289 0xffff, /* dst_mask */
1290 FALSE), /* pcrel_offset */
1292 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1293 small data items. */
1294 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1296 1, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_signed, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC_EMB_SDA2REL", /* name */
1303 FALSE, /* partial_inplace */
1305 0xffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1308 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1309 signed offset from the appropriate base, and filling in the register
1310 field with the appropriate register (0, 2, or 13). */
1311 HOWTO (R_PPC_EMB_SDA21, /* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_signed, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_PPC_EMB_SDA21", /* name */
1320 FALSE, /* partial_inplace */
1322 0xffff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1325 /* Relocation not handled: R_PPC_EMB_MRKREF */
1326 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1327 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1328 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1330 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1332 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1333 in the 16 bit signed offset from the appropriate base, and filling in the
1334 register field with the appropriate register (0, 2, or 13). */
1335 HOWTO (R_PPC_EMB_RELSDA, /* type */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 TRUE, /* pc_relative */
1341 complain_overflow_signed, /* complain_on_overflow */
1342 bfd_elf_generic_reloc, /* special_function */
1343 "R_PPC_EMB_RELSDA", /* name */
1344 FALSE, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1349 /* A 16 bit relative relocation. */
1350 HOWTO (R_PPC_REL16, /* type */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 TRUE, /* pc_relative */
1356 complain_overflow_bitfield, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_REL16", /* name */
1359 FALSE, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 TRUE), /* pcrel_offset */
1364 /* A 16 bit relative relocation without overflow. */
1365 HOWTO (R_PPC_REL16_LO, /* type */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 TRUE, /* pc_relative */
1371 complain_overflow_dont,/* complain_on_overflow */
1372 bfd_elf_generic_reloc, /* special_function */
1373 "R_PPC_REL16_LO", /* name */
1374 FALSE, /* partial_inplace */
1376 0xffff, /* dst_mask */
1377 TRUE), /* pcrel_offset */
1379 /* The high order 16 bits of a relative address. */
1380 HOWTO (R_PPC_REL16_HI, /* type */
1381 16, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 TRUE, /* pc_relative */
1386 complain_overflow_dont, /* complain_on_overflow */
1387 bfd_elf_generic_reloc, /* special_function */
1388 "R_PPC_REL16_HI", /* name */
1389 FALSE, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 TRUE), /* pcrel_offset */
1394 /* The high order 16 bits of a relative address, plus 1 if the contents of
1395 the low 16 bits, treated as a signed number, is negative. */
1396 HOWTO (R_PPC_REL16_HA, /* type */
1397 16, /* rightshift */
1398 1, /* size (0 = byte, 1 = short, 2 = long) */
1400 TRUE, /* pc_relative */
1402 complain_overflow_dont, /* complain_on_overflow */
1403 ppc_elf_addr16_ha_reloc, /* special_function */
1404 "R_PPC_REL16_HA", /* name */
1405 FALSE, /* partial_inplace */
1407 0xffff, /* dst_mask */
1408 TRUE), /* pcrel_offset */
1410 /* GNU extension to record C++ vtable hierarchy. */
1411 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 NULL, /* special_function */
1419 "R_PPC_GNU_VTINHERIT", /* name */
1420 FALSE, /* partial_inplace */
1423 FALSE), /* pcrel_offset */
1425 /* GNU extension to record C++ vtable member usage. */
1426 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1428 0, /* size (0 = byte, 1 = short, 2 = long) */
1430 FALSE, /* pc_relative */
1432 complain_overflow_dont, /* complain_on_overflow */
1433 NULL, /* special_function */
1434 "R_PPC_GNU_VTENTRY", /* name */
1435 FALSE, /* partial_inplace */
1438 FALSE), /* pcrel_offset */
1440 /* Phony reloc to handle AIX style TOC entries. */
1441 HOWTO (R_PPC_TOC16, /* type */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 FALSE, /* pc_relative */
1447 complain_overflow_signed, /* complain_on_overflow */
1448 bfd_elf_generic_reloc, /* special_function */
1449 "R_PPC_TOC16", /* name */
1450 FALSE, /* partial_inplace */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1456 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1459 ppc_elf_howto_init (void)
1461 unsigned int i, type;
1464 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1467 type = ppc_elf_howto_raw[i].type;
1468 if (type >= (sizeof (ppc_elf_howto_table)
1469 / sizeof (ppc_elf_howto_table[0])))
1471 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1475 static reloc_howto_type *
1476 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1477 bfd_reloc_code_real_type code)
1479 enum elf_ppc_reloc_type r;
1481 /* Initialize howto table if not already done. */
1482 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1483 ppc_elf_howto_init ();
1490 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1491 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1492 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1493 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1494 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1495 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1496 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1497 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1498 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1499 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1500 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1501 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1502 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1503 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1504 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1505 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1506 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1507 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1508 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1509 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1510 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1511 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1512 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1513 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1514 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1515 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1516 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1517 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1518 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1519 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1520 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1521 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1522 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1523 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1524 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1525 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1526 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1527 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1528 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1529 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1530 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1531 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1532 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1533 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1534 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1535 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1536 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1537 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1541 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1545 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1549 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1553 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1554 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1558 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1559 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1560 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1561 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1562 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1563 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1564 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1565 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1567 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1568 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1569 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1570 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1571 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1572 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1573 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1574 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1577 return ppc_elf_howto_table[r];
1580 /* Set the howto pointer for a PowerPC ELF reloc. */
1583 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1585 Elf_Internal_Rela *dst)
1587 /* Initialize howto table if not already done. */
1588 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1589 ppc_elf_howto_init ();
1591 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1592 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1595 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1597 static bfd_reloc_status_type
1598 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1599 arelent *reloc_entry,
1601 void *data ATTRIBUTE_UNUSED,
1602 asection *input_section,
1604 char **error_message ATTRIBUTE_UNUSED)
1608 if (output_bfd != NULL)
1610 reloc_entry->address += input_section->output_offset;
1611 return bfd_reloc_ok;
1614 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1615 return bfd_reloc_outofrange;
1617 if (bfd_is_com_section (symbol->section))
1620 relocation = symbol->value;
1622 relocation += symbol->section->output_section->vma;
1623 relocation += symbol->section->output_offset;
1624 relocation += reloc_entry->addend;
1625 if (reloc_entry->howto->pc_relative)
1626 relocation -= reloc_entry->address;
1628 reloc_entry->addend += (relocation & 0x8000) << 1;
1630 return bfd_reloc_continue;
1633 static bfd_reloc_status_type
1634 ppc_elf_unhandled_reloc (bfd *abfd,
1635 arelent *reloc_entry,
1638 asection *input_section,
1640 char **error_message)
1642 /* If this is a relocatable link (output_bfd test tells us), just
1643 call the generic function. Any adjustment will be done at final
1645 if (output_bfd != NULL)
1646 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1647 input_section, output_bfd, error_message);
1649 if (error_message != NULL)
1651 static char buf[60];
1652 sprintf (buf, _("generic linker can't handle %s"),
1653 reloc_entry->howto->name);
1654 *error_message = buf;
1656 return bfd_reloc_dangerous;
1659 /* Sections created by the linker. */
1661 typedef struct elf_linker_section
1663 /* Pointer to the bfd section. */
1667 /* Associated bss section name. */
1668 const char *bss_name;
1669 /* Associated symbol name. */
1670 const char *sym_name;
1671 /* Associated symbol. */
1672 struct elf_link_hash_entry *sym;
1673 } elf_linker_section_t;
1675 /* Linked list of allocated pointer entries. This hangs off of the
1676 symbol lists, and provides allows us to return different pointers,
1677 based on different addend's. */
1679 typedef struct elf_linker_section_pointers
1681 /* next allocated pointer for this symbol */
1682 struct elf_linker_section_pointers *next;
1683 /* offset of pointer from beginning of section */
1687 /* which linker section this is */
1688 elf_linker_section_t *lsect;
1689 } elf_linker_section_pointers_t;
1691 struct ppc_elf_obj_tdata
1693 struct elf_obj_tdata elf;
1695 /* A mapping from local symbols to offsets into the various linker
1696 sections added. This is index by the symbol index. */
1697 elf_linker_section_pointers_t **linker_section_pointers;
1700 #define ppc_elf_tdata(bfd) \
1701 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1703 #define elf_local_ptr_offsets(bfd) \
1704 (ppc_elf_tdata (bfd)->linker_section_pointers)
1706 /* Override the generic function because we store some extras. */
1709 ppc_elf_mkobject (bfd *abfd)
1711 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1712 abfd->tdata.any = bfd_zalloc (abfd, amt);
1713 if (abfd->tdata.any == NULL)
1718 /* Fix bad default arch selected for a 32 bit input bfd when the
1719 default is 64 bit. */
1722 ppc_elf_object_p (bfd *abfd)
1724 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1726 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1728 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1730 /* Relies on arch after 64 bit default being 32 bit default. */
1731 abfd->arch_info = abfd->arch_info->next;
1732 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1738 /* Function to set whether a module needs the -mrelocatable bit set. */
1741 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1743 BFD_ASSERT (!elf_flags_init (abfd)
1744 || elf_elfheader (abfd)->e_flags == flags);
1746 elf_elfheader (abfd)->e_flags = flags;
1747 elf_flags_init (abfd) = TRUE;
1751 /* Support for core dump NOTE sections. */
1754 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1759 switch (note->descsz)
1764 case 268: /* Linux/PPC. */
1766 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1769 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1778 /* Make a ".reg/999" section. */
1779 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1780 size, note->descpos + offset);
1784 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1786 switch (note->descsz)
1791 case 128: /* Linux/PPC elf_prpsinfo. */
1792 elf_tdata (abfd)->core_program
1793 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1794 elf_tdata (abfd)->core_command
1795 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1798 /* Note that for some reason, a spurious space is tacked
1799 onto the end of the args in some (at least one anyway)
1800 implementations, so strip it off if it exists. */
1803 char *command = elf_tdata (abfd)->core_command;
1804 int n = strlen (command);
1806 if (0 < n && command[n - 1] == ' ')
1807 command[n - 1] = '\0';
1813 /* Return address for Ith PLT stub in section PLT, for relocation REL
1814 or (bfd_vma) -1 if it should not be included. */
1817 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1818 const asection *plt ATTRIBUTE_UNUSED,
1821 return rel->address;
1824 /* Handle a PowerPC specific section when reading an object file. This
1825 is called when bfd_section_from_shdr finds a section with an unknown
1829 ppc_elf_section_from_shdr (bfd *abfd,
1830 Elf_Internal_Shdr *hdr,
1837 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1840 newsect = hdr->bfd_section;
1841 flags = bfd_get_section_flags (abfd, newsect);
1842 if (hdr->sh_flags & SHF_EXCLUDE)
1843 flags |= SEC_EXCLUDE;
1845 if (hdr->sh_type == SHT_ORDERED)
1846 flags |= SEC_SORT_ENTRIES;
1848 bfd_set_section_flags (abfd, newsect, flags);
1852 /* Set up any other section flags and such that may be necessary. */
1855 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1856 Elf_Internal_Shdr *shdr,
1859 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1860 shdr->sh_flags |= SHF_EXCLUDE;
1862 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1863 shdr->sh_type = SHT_ORDERED;
1868 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1869 need to bump up the number of section headers. */
1872 ppc_elf_additional_program_headers (bfd *abfd)
1877 s = bfd_get_section_by_name (abfd, ".sbss2");
1878 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1881 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1882 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1888 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1889 .PPC.EMB.sbss0 a normal section, and not a bss section so
1890 that the linker doesn't crater when trying to make more than
1893 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1895 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1896 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1897 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1898 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1899 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1900 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1901 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1902 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1903 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1904 { NULL, 0, 0, 0, 0 }
1907 /* This is what we want for new plt/got. */
1908 static struct bfd_elf_special_section ppc_alt_plt =
1909 { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC };
1911 static const struct bfd_elf_special_section *
1912 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1914 const struct bfd_elf_special_section *ssect;
1916 /* See if this is one of the special sections. */
1917 if (sec->name == NULL)
1920 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1924 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1925 ssect = &ppc_alt_plt;
1929 return _bfd_elf_get_sec_type_attr (abfd, sec);
1932 /* Very simple linked list structure for recording apuinfo values. */
1933 typedef struct apuinfo_list
1935 struct apuinfo_list *next;
1936 unsigned long value;
1940 static apuinfo_list *head;
1944 apuinfo_list_init (void)
1950 apuinfo_list_add (unsigned long value)
1952 apuinfo_list *entry = head;
1954 while (entry != NULL)
1956 if (entry->value == value)
1958 entry = entry->next;
1961 entry = bfd_malloc (sizeof (* entry));
1965 entry->value = value;
1971 apuinfo_list_length (void)
1973 apuinfo_list *entry;
1974 unsigned long count;
1976 for (entry = head, count = 0;
1978 entry = entry->next)
1984 static inline unsigned long
1985 apuinfo_list_element (unsigned long number)
1987 apuinfo_list * entry;
1991 entry = entry->next)
1994 return entry ? entry->value : 0;
1998 apuinfo_list_finish (void)
2000 apuinfo_list *entry;
2002 for (entry = head; entry;)
2004 apuinfo_list *next = entry->next;
2012 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2013 #define APUINFO_LABEL "APUinfo"
2015 /* Scan the input BFDs and create a linked list of
2016 the APUinfo values that will need to be emitted. */
2019 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2024 unsigned num_input_sections;
2025 bfd_size_type output_section_size;
2027 unsigned num_entries;
2028 unsigned long offset;
2029 unsigned long length;
2030 const char *error_message = NULL;
2032 if (link_info == NULL)
2035 /* Scan the input bfds, looking for apuinfo sections. */
2036 num_input_sections = 0;
2037 output_section_size = 0;
2039 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2041 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2044 ++ num_input_sections;
2045 output_section_size += asec->size;
2049 /* We need at least one input sections
2050 in order to make merging worthwhile. */
2051 if (num_input_sections < 1)
2054 /* Just make sure that the output section exists as well. */
2055 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2059 /* Allocate a buffer for the contents of the input sections. */
2060 buffer = bfd_malloc (output_section_size);
2065 apuinfo_list_init ();
2067 /* Read in the input sections contents. */
2068 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2070 unsigned long datum;
2073 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2077 length = asec->size;
2080 error_message = _("corrupt or empty %s section in %B");
2084 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2085 || (bfd_bread (buffer + offset, length, ibfd) != length))
2087 error_message = _("unable to read in %s section from %B");
2091 /* Process the contents of the section. */
2092 ptr = buffer + offset;
2093 error_message = _("corrupt %s section in %B");
2095 /* Verify the contents of the header. Note - we have to
2096 extract the values this way in order to allow for a
2097 host whose endian-ness is different from the target. */
2098 datum = bfd_get_32 (ibfd, ptr);
2099 if (datum != sizeof APUINFO_LABEL)
2102 datum = bfd_get_32 (ibfd, ptr + 8);
2106 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2109 /* Get the number of bytes used for apuinfo entries. */
2110 datum = bfd_get_32 (ibfd, ptr + 4);
2111 if (datum + 20 != length)
2114 /* Make sure that we do not run off the end of the section. */
2115 if (offset + length > output_section_size)
2118 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2119 for (i = 0; i < datum; i += 4)
2120 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2122 /* Update the offset. */
2126 error_message = NULL;
2128 /* Compute the size of the output section. */
2129 num_entries = apuinfo_list_length ();
2130 output_section_size = 20 + num_entries * 4;
2132 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2134 if (! bfd_set_section_size (abfd, asec, output_section_size))
2136 error_message = _("warning: unable to set size of %s section in %B");
2142 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2145 /* Prevent the output section from accumulating the input sections'
2146 contents. We have already stored this in our linked list structure. */
2149 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2151 bfd_byte *contents ATTRIBUTE_UNUSED)
2153 return (apuinfo_list_length ()
2154 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2157 /* Finally we can generate the output section. */
2160 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2165 unsigned num_entries;
2166 bfd_size_type length;
2168 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2172 if (apuinfo_list_length () == 0)
2175 length = asec->size;
2179 buffer = bfd_malloc (length);
2182 (*_bfd_error_handler)
2183 (_("failed to allocate space for new APUinfo section."));
2187 /* Create the apuinfo header. */
2188 num_entries = apuinfo_list_length ();
2189 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2190 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2191 bfd_put_32 (abfd, 0x2, buffer + 8);
2192 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2195 for (i = 0; i < num_entries; i++)
2197 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2201 if (length != asec->size)
2202 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2204 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2205 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2209 apuinfo_list_finish ();
2212 /* The following functions are specific to the ELF linker, while
2213 functions above are used generally. They appear in this file more
2214 or less in the order in which they are called. eg.
2215 ppc_elf_check_relocs is called early in the link process,
2216 ppc_elf_finish_dynamic_sections is one of the last functions
2219 /* The PPC linker needs to keep track of the number of relocs that it
2220 decides to copy as dynamic relocs in check_relocs for each symbol.
2221 This is so that it can later discard them if they are found to be
2222 unnecessary. We store the information in a field extending the
2223 regular ELF linker hash table. */
2225 struct ppc_elf_dyn_relocs
2227 struct ppc_elf_dyn_relocs *next;
2229 /* The input section of the reloc. */
2232 /* Total number of relocs copied for the input section. */
2233 bfd_size_type count;
2235 /* Number of pc-relative relocs copied for the input section. */
2236 bfd_size_type pc_count;
2239 /* Track PLT entries needed for a given symbol. We might need more
2240 than one glink entry per symbol. */
2243 struct plt_entry *next;
2245 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2246 This field stores the offset into .got2 used to initialise the
2247 GOT pointer reg. It will always be at least 32768 (and for
2248 current gcc this is the only offset used). */
2251 /* The .got2 section. */
2254 /* PLT refcount or offset. */
2257 bfd_signed_vma refcount;
2261 /* .glink stub offset. */
2262 bfd_vma glink_offset;
2265 /* Of those relocs that might be copied as dynamic relocs, this macro
2266 selects those that must be copied when linking a shared library,
2267 even when the symbol is local. */
2269 #define MUST_BE_DYN_RELOC(RTYPE) \
2270 ((RTYPE) != R_PPC_REL24 \
2271 && (RTYPE) != R_PPC_REL14 \
2272 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2273 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2274 && (RTYPE) != R_PPC_REL32)
2276 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2277 copying dynamic variables from a shared lib into an app's dynbss
2278 section, and instead use a dynamic relocation to point into the
2280 #define ELIMINATE_COPY_RELOCS 1
2282 /* PPC ELF linker hash entry. */
2284 struct ppc_elf_link_hash_entry
2286 struct elf_link_hash_entry elf;
2288 /* If this symbol is used in the linker created sections, the processor
2289 specific backend uses this field to map the field into the offset
2290 from the beginning of the section. */
2291 elf_linker_section_pointers_t *linker_section_pointer;
2293 /* Track dynamic relocs copied for this symbol. */
2294 struct ppc_elf_dyn_relocs *dyn_relocs;
2296 /* Contexts in which symbol is used in the GOT (or TOC).
2297 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2298 corresponding relocs are encountered during check_relocs.
2299 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2300 indicate the corresponding GOT entry type is not needed. */
2301 #define TLS_GD 1 /* GD reloc. */
2302 #define TLS_LD 2 /* LD reloc. */
2303 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2304 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2305 #define TLS_TLS 16 /* Any TLS reloc. */
2306 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2309 /* Nonzero if we have seen a small data relocation referring to this
2311 unsigned char has_sda_refs;
2314 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2316 enum ppc_elf_plt_type {
2323 /* PPC ELF linker hash table. */
2325 struct ppc_elf_link_hash_table
2327 struct elf_link_hash_table elf;
2329 /* Short-cuts to get to dynamic linker sections. */
2339 elf_linker_section_t sdata[2];
2342 /* Shortcut to .__tls_get_addr. */
2343 struct elf_link_hash_entry *tls_get_addr;
2345 /* TLS local dynamic got entry handling. */
2347 bfd_signed_vma refcount;
2351 /* Offset of PltResolve function in glink. */
2352 bfd_vma glink_pltresolve;
2354 /* Size of reserved GOT entries. */
2355 unsigned int got_header_size;
2356 /* Non-zero if allocating the header left a gap. */
2357 unsigned int got_gap;
2359 /* The type of PLT we have chosen to use. */
2360 enum ppc_elf_plt_type plt_type;
2362 /* Whether we can use the new PLT layout. */
2363 unsigned int can_use_new_plt:1;
2365 /* Set if we should emit symbols for stubs. */
2366 unsigned int emit_stub_syms:1;
2368 /* Small local sym to section mapping cache. */
2369 struct sym_sec_cache sym_sec;
2371 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2374 /* The .got.plt section (VxWorks only)*/
2377 /* True if the target system is VxWorks. */
2380 /* The size of PLT entries. */
2382 /* The distance between adjacent PLT slots. */
2384 /* The size of the first PLT entry. */
2385 int plt_initial_entry_size;
2388 /* Get the PPC ELF linker hash table from a link_info structure. */
2390 #define ppc_elf_hash_table(p) \
2391 ((struct ppc_elf_link_hash_table *) (p)->hash)
2393 /* Create an entry in a PPC ELF linker hash table. */
2395 static struct bfd_hash_entry *
2396 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2397 struct bfd_hash_table *table,
2400 /* Allocate the structure if it has not already been allocated by a
2404 entry = bfd_hash_allocate (table,
2405 sizeof (struct ppc_elf_link_hash_entry));
2410 /* Call the allocation method of the superclass. */
2411 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2414 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2415 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2416 ppc_elf_hash_entry (entry)->tls_mask = 0;
2422 /* Create a PPC ELF linker hash table. */
2424 static struct bfd_link_hash_table *
2425 ppc_elf_link_hash_table_create (bfd *abfd)
2427 struct ppc_elf_link_hash_table *ret;
2429 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2433 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2434 ppc_elf_link_hash_newfunc))
2440 ret->elf.init_plt_refcount.refcount = 0;
2441 ret->elf.init_plt_refcount.glist = NULL;
2442 ret->elf.init_plt_offset.offset = 0;
2443 ret->elf.init_plt_offset.glist = NULL;
2445 ret->sdata[0].name = ".sdata";
2446 ret->sdata[0].sym_name = "_SDA_BASE_";
2447 ret->sdata[0].bss_name = ".sbss";
2449 ret->sdata[1].name = ".sdata2";
2450 ret->sdata[1].sym_name = "_SDA2_BASE_";
2451 ret->sdata[1].bss_name = ".sbss2";
2453 ret->plt_entry_size = 12;
2454 ret->plt_slot_size = 8;
2455 ret->plt_initial_entry_size = 72;
2457 ret->is_vxworks = 0;
2459 return &ret->elf.root;
2462 /* Create .got and the related sections. */
2465 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2467 struct ppc_elf_link_hash_table *htab;
2471 if (!_bfd_elf_create_got_section (abfd, info))
2474 htab = ppc_elf_hash_table (info);
2475 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2479 if (htab->is_vxworks)
2481 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2487 /* The powerpc .got has a blrl instruction in it. Mark it
2489 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2490 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2491 if (!bfd_set_section_flags (abfd, s, flags))
2495 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2496 | SEC_LINKER_CREATED | SEC_READONLY);
2497 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2499 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2505 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2506 to output sections (just like _bfd_elf_create_dynamic_sections has
2507 to create .dynbss and .rela.bss). */
2510 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2512 struct ppc_elf_link_hash_table *htab;
2516 htab = ppc_elf_hash_table (info);
2518 if (htab->got == NULL
2519 && !ppc_elf_create_got (abfd, info))
2522 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2525 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2526 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2528 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2531 || !bfd_set_section_alignment (abfd, s, 4))
2534 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2535 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2536 SEC_ALLOC | SEC_LINKER_CREATED);
2543 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2544 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2547 || ! bfd_set_section_alignment (abfd, s, 2))
2551 /* Create the section for VxWorks static plt relocations. */
2552 if (htab->is_vxworks && !info->shared)
2554 s = bfd_make_section (abfd, ".rela.plt.unloaded");
2555 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY
2556 | SEC_LINKER_CREATED);
2558 || ! bfd_set_section_flags (abfd, s, flags)
2559 || ! bfd_set_section_alignment (abfd, s,
2560 get_elf_backend_data (abfd)->s->log_file_align))
2565 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2566 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2570 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2571 if (htab->plt_type == PLT_VXWORKS)
2572 /* The VxWorks PLT is a loaded section with contents. */
2573 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2574 return bfd_set_section_flags (abfd, s, flags);
2577 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2580 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2581 struct elf_link_hash_entry *dir,
2582 struct elf_link_hash_entry *ind)
2584 struct ppc_elf_link_hash_entry *edir, *eind;
2586 edir = (struct ppc_elf_link_hash_entry *) dir;
2587 eind = (struct ppc_elf_link_hash_entry *) ind;
2589 if (eind->dyn_relocs != NULL)
2591 if (edir->dyn_relocs != NULL)
2593 struct ppc_elf_dyn_relocs **pp;
2594 struct ppc_elf_dyn_relocs *p;
2596 /* Add reloc counts against the indirect sym to the direct sym
2597 list. Merge any entries against the same section. */
2598 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2600 struct ppc_elf_dyn_relocs *q;
2602 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2603 if (q->sec == p->sec)
2605 q->pc_count += p->pc_count;
2606 q->count += p->count;
2613 *pp = edir->dyn_relocs;
2616 edir->dyn_relocs = eind->dyn_relocs;
2617 eind->dyn_relocs = NULL;
2620 edir->tls_mask |= eind->tls_mask;
2621 edir->has_sda_refs |= eind->has_sda_refs;
2623 /* If called to transfer flags for a weakdef during processing
2624 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2625 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2626 if (!(ELIMINATE_COPY_RELOCS
2627 && eind->elf.root.type != bfd_link_hash_indirect
2628 && edir->elf.dynamic_adjusted))
2629 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2631 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2632 edir->elf.ref_regular |= eind->elf.ref_regular;
2633 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2634 edir->elf.needs_plt |= eind->elf.needs_plt;
2636 /* If we were called to copy over info for a weak sym, that's all. */
2637 if (eind->elf.root.type != bfd_link_hash_indirect)
2640 /* Copy over the GOT refcount entries that we may have already seen to
2641 the symbol which just became indirect. */
2642 edir->elf.got.refcount += eind->elf.got.refcount;
2643 eind->elf.got.refcount = 0;
2645 /* And plt entries. */
2646 if (eind->elf.plt.plist != NULL)
2648 if (edir->elf.plt.plist != NULL)
2650 struct plt_entry **entp;
2651 struct plt_entry *ent;
2653 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2655 struct plt_entry *dent;
2657 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2658 if (dent->sec == ent->sec && dent->addend == ent->addend)
2660 dent->plt.refcount += ent->plt.refcount;
2667 *entp = edir->elf.plt.plist;
2670 edir->elf.plt.plist = eind->elf.plt.plist;
2671 eind->elf.plt.plist = NULL;
2674 if (eind->elf.dynindx != -1)
2676 if (edir->elf.dynindx != -1)
2677 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2678 edir->elf.dynstr_index);
2679 edir->elf.dynindx = eind->elf.dynindx;
2680 edir->elf.dynstr_index = eind->elf.dynstr_index;
2681 eind->elf.dynindx = -1;
2682 eind->elf.dynstr_index = 0;
2686 /* Return 1 if target is one of ours. */
2689 is_ppc_elf_target (const struct bfd_target *targ)
2691 extern const bfd_target bfd_elf32_powerpc_vec;
2692 extern const bfd_target bfd_elf32_powerpcle_vec;
2694 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2697 /* Hook called by the linker routine which adds symbols from an object
2698 file. We use it to put .comm items in .sbss, and not .bss. */
2701 ppc_elf_add_symbol_hook (bfd *abfd,
2702 struct bfd_link_info *info,
2703 Elf_Internal_Sym *sym,
2704 const char **namep ATTRIBUTE_UNUSED,
2705 flagword *flagsp ATTRIBUTE_UNUSED,
2709 if (sym->st_shndx == SHN_COMMON
2710 && !info->relocatable
2711 && sym->st_size <= elf_gp_size (abfd)
2712 && is_ppc_elf_target (info->hash->creator))
2714 /* Common symbols less than or equal to -G nn bytes are automatically
2716 struct ppc_elf_link_hash_table *htab;
2718 htab = ppc_elf_hash_table (info);
2719 if (htab->sbss == NULL)
2721 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2723 if (!htab->elf.dynobj)
2724 htab->elf.dynobj = abfd;
2726 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2729 if (htab->sbss == NULL)
2734 *valp = sym->st_size;
2741 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2742 elf_linker_section_t *lsect)
2744 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2746 if (lsect->sym == NULL)
2748 if (lsect->sym->root.type == bfd_link_hash_new)
2749 lsect->sym->non_elf = 0;
2750 lsect->sym->ref_regular = 1;
2754 /* Create a special linker section. */
2757 ppc_elf_create_linker_section (bfd *abfd,
2758 struct bfd_link_info *info,
2760 elf_linker_section_t *lsect)
2762 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2765 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2766 | SEC_LINKER_CREATED);
2768 /* Record the first bfd that needs the special sections. */
2769 if (!htab->elf.dynobj)
2770 htab->elf.dynobj = abfd;
2772 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2776 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2780 return create_sdata_sym (htab, lsect);
2783 /* Find a linker generated pointer with a given addend and type. */
2785 static elf_linker_section_pointers_t *
2786 elf_find_pointer_linker_section
2787 (elf_linker_section_pointers_t *linker_pointers,
2789 elf_linker_section_t *lsect)
2791 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2792 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2793 return linker_pointers;
2798 /* Allocate a pointer to live in a linker created section. */
2801 elf_create_pointer_linker_section (bfd *abfd,
2802 elf_linker_section_t *lsect,
2803 struct elf_link_hash_entry *h,
2804 const Elf_Internal_Rela *rel)
2806 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2807 elf_linker_section_pointers_t *linker_section_ptr;
2808 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2811 BFD_ASSERT (lsect != NULL);
2813 /* Is this a global symbol? */
2816 struct ppc_elf_link_hash_entry *eh;
2818 /* Has this symbol already been allocated? If so, our work is done. */
2819 eh = (struct ppc_elf_link_hash_entry *) h;
2820 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2825 ptr_linker_section_ptr = &eh->linker_section_pointer;
2829 /* Allocation of a pointer to a local symbol. */
2830 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2832 /* Allocate a table to hold the local symbols if first time. */
2835 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2838 amt *= sizeof (elf_linker_section_pointers_t *);
2839 ptr = bfd_zalloc (abfd, amt);
2844 elf_local_ptr_offsets (abfd) = ptr;
2847 /* Has this symbol already been allocated? If so, our work is done. */
2848 if (elf_find_pointer_linker_section (ptr[r_symndx],
2853 ptr_linker_section_ptr = &ptr[r_symndx];
2856 /* Allocate space for a pointer in the linker section, and allocate
2857 a new pointer record from internal memory. */
2858 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2859 amt = sizeof (elf_linker_section_pointers_t);
2860 linker_section_ptr = bfd_alloc (abfd, amt);
2862 if (!linker_section_ptr)
2865 linker_section_ptr->next = *ptr_linker_section_ptr;
2866 linker_section_ptr->addend = rel->r_addend;
2867 linker_section_ptr->lsect = lsect;
2868 *ptr_linker_section_ptr = linker_section_ptr;
2870 linker_section_ptr->offset = lsect->section->size;
2871 lsect->section->size += 4;
2875 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2876 lsect->name, (long) linker_section_ptr->offset,
2877 (long) lsect->section->size);
2884 update_local_sym_info (bfd *abfd,
2885 Elf_Internal_Shdr *symtab_hdr,
2886 unsigned long r_symndx,
2889 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2890 char *local_got_tls_masks;
2892 if (local_got_refcounts == NULL)
2894 bfd_size_type size = symtab_hdr->sh_info;
2896 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2897 local_got_refcounts = bfd_zalloc (abfd, size);
2898 if (local_got_refcounts == NULL)
2900 elf_local_got_refcounts (abfd) = local_got_refcounts;
2903 local_got_refcounts[r_symndx] += 1;
2904 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2905 local_got_tls_masks[r_symndx] |= tls_type;
2910 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2911 asection *sec, bfd_vma addend)
2913 struct plt_entry *ent;
2917 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2918 if (ent->sec == sec && ent->addend == addend)
2922 bfd_size_type amt = sizeof (*ent);
2923 ent = bfd_alloc (abfd, amt);
2926 ent->next = h->plt.plist;
2928 ent->addend = addend;
2929 ent->plt.refcount = 0;
2932 ent->plt.refcount += 1;
2936 static struct plt_entry *
2937 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2939 struct plt_entry *ent;
2943 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2944 if (ent->sec == sec && ent->addend == addend)
2950 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2952 (*_bfd_error_handler)
2953 (_("%B: relocation %s cannot be used when making a shared object"),
2955 ppc_elf_howto_table[r_type]->name);
2956 bfd_set_error (bfd_error_bad_value);
2959 /* Look through the relocs for a section during the first phase, and
2960 allocate space in the global offset table or procedure linkage
2964 ppc_elf_check_relocs (bfd *abfd,
2965 struct bfd_link_info *info,
2967 const Elf_Internal_Rela *relocs)
2969 struct ppc_elf_link_hash_table *htab;
2970 Elf_Internal_Shdr *symtab_hdr;
2971 struct elf_link_hash_entry **sym_hashes;
2972 const Elf_Internal_Rela *rel;
2973 const Elf_Internal_Rela *rel_end;
2974 asection *got2, *sreloc;
2976 if (info->relocatable)
2979 /* Don't do anything special with non-loaded, non-alloced sections.
2980 In particular, any relocs in such sections should not affect GOT
2981 and PLT reference counting (ie. we don't allow them to create GOT
2982 or PLT entries), there's no possibility or desire to optimize TLS
2983 relocs, and there's not much point in propagating relocs to shared
2984 libs that the dynamic linker won't relocate. */
2985 if ((sec->flags & SEC_ALLOC) == 0)
2989 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2993 /* Initialize howto table if not already done. */
2994 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2995 ppc_elf_howto_init ();
2997 htab = ppc_elf_hash_table (info);
2998 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2999 sym_hashes = elf_sym_hashes (abfd);
3000 got2 = bfd_get_section_by_name (abfd, ".got2");
3003 rel_end = relocs + sec->reloc_count;
3004 for (rel = relocs; rel < rel_end; rel++)
3006 unsigned long r_symndx;
3007 enum elf_ppc_reloc_type r_type;
3008 struct elf_link_hash_entry *h;
3011 r_symndx = ELF32_R_SYM (rel->r_info);
3012 if (r_symndx < symtab_hdr->sh_info)
3016 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3017 while (h->root.type == bfd_link_hash_indirect
3018 || h->root.type == bfd_link_hash_warning)
3019 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3022 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3023 This shows up in particular in an R_PPC_ADDR32 in the eabi
3026 && htab->got == NULL
3027 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3029 if (htab->elf.dynobj == NULL)
3030 htab->elf.dynobj = abfd;
3031 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3033 BFD_ASSERT (h == htab->elf.hgot);
3036 r_type = ELF32_R_TYPE (rel->r_info);
3039 case R_PPC_GOT_TLSLD16:
3040 case R_PPC_GOT_TLSLD16_LO:
3041 case R_PPC_GOT_TLSLD16_HI:
3042 case R_PPC_GOT_TLSLD16_HA:
3043 htab->tlsld_got.refcount += 1;
3044 tls_type = TLS_TLS | TLS_LD;
3047 case R_PPC_GOT_TLSGD16:
3048 case R_PPC_GOT_TLSGD16_LO:
3049 case R_PPC_GOT_TLSGD16_HI:
3050 case R_PPC_GOT_TLSGD16_HA:
3051 tls_type = TLS_TLS | TLS_GD;
3054 case R_PPC_GOT_TPREL16:
3055 case R_PPC_GOT_TPREL16_LO:
3056 case R_PPC_GOT_TPREL16_HI:
3057 case R_PPC_GOT_TPREL16_HA:
3059 info->flags |= DF_STATIC_TLS;
3060 tls_type = TLS_TLS | TLS_TPREL;
3063 case R_PPC_GOT_DTPREL16:
3064 case R_PPC_GOT_DTPREL16_LO:
3065 case R_PPC_GOT_DTPREL16_HI:
3066 case R_PPC_GOT_DTPREL16_HA:
3067 tls_type = TLS_TLS | TLS_DTPREL;
3069 sec->has_tls_reloc = 1;
3072 /* GOT16 relocations */
3074 case R_PPC_GOT16_LO:
3075 case R_PPC_GOT16_HI:
3076 case R_PPC_GOT16_HA:
3077 /* This symbol requires a global offset table entry. */
3078 if (htab->got == NULL)
3080 if (htab->elf.dynobj == NULL)
3081 htab->elf.dynobj = abfd;
3082 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3087 h->got.refcount += 1;
3088 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3091 /* This is a global offset table entry for a local symbol. */
3092 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3096 /* Indirect .sdata relocation. */
3097 case R_PPC_EMB_SDAI16:
3100 bad_shared_reloc (abfd, r_type);
3103 if (htab->sdata[0].section == NULL
3104 && !ppc_elf_create_linker_section (abfd, info, 0,
3107 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3112 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3113 h->non_got_ref = TRUE;
3117 /* Indirect .sdata2 relocation. */
3118 case R_PPC_EMB_SDA2I16:
3121 bad_shared_reloc (abfd, r_type);
3124 if (htab->sdata[1].section == NULL
3125 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3128 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3133 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3134 h->non_got_ref = TRUE;
3138 case R_PPC_SDAREL16:
3141 bad_shared_reloc (abfd, r_type);
3144 if (htab->sdata[0].sym == NULL
3145 && !create_sdata_sym (htab, &htab->sdata[0]))
3149 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3150 h->non_got_ref = TRUE;
3154 case R_PPC_EMB_SDA2REL:
3157 bad_shared_reloc (abfd, r_type);
3160 if (htab->sdata[1].sym == NULL
3161 && !create_sdata_sym (htab, &htab->sdata[1]))
3165 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3166 h->non_got_ref = TRUE;
3170 case R_PPC_EMB_SDA21:
3171 case R_PPC_EMB_RELSDA:
3174 bad_shared_reloc (abfd, r_type);
3177 if (htab->sdata[0].sym == NULL
3178 && !create_sdata_sym (htab, &htab->sdata[0]))
3180 if (htab->sdata[1].sym == NULL
3181 && !create_sdata_sym (htab, &htab->sdata[1]))
3185 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3186 h->non_got_ref = TRUE;
3190 case R_PPC_EMB_NADDR32:
3191 case R_PPC_EMB_NADDR16:
3192 case R_PPC_EMB_NADDR16_LO:
3193 case R_PPC_EMB_NADDR16_HI:
3194 case R_PPC_EMB_NADDR16_HA:
3197 bad_shared_reloc (abfd, r_type);
3201 h->non_got_ref = TRUE;
3205 case R_PPC_PLTREL24:
3206 case R_PPC_PLTREL32:
3207 case R_PPC_PLT16_LO:
3208 case R_PPC_PLT16_HI:
3209 case R_PPC_PLT16_HA:
3211 fprintf (stderr, "Reloc requires a PLT entry\n");
3213 /* This symbol requires a procedure linkage table entry. We
3214 actually build the entry in finish_dynamic_symbol,
3215 because this might be a case of linking PIC code without
3216 linking in any dynamic objects, in which case we don't
3217 need to generate a procedure linkage table after all. */
3221 /* It does not make sense to have a procedure linkage
3222 table entry for a local symbol. */
3223 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3227 (long) rel->r_offset,
3228 ppc_elf_howto_table[r_type]->name);
3229 bfd_set_error (bfd_error_bad_value);
3234 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3237 if (!update_plt_info (abfd, h, got2, addend))
3242 /* The following relocations don't need to propagate the
3243 relocation if linking a shared object since they are
3244 section relative. */
3246 case R_PPC_SECTOFF_LO:
3247 case R_PPC_SECTOFF_HI:
3248 case R_PPC_SECTOFF_HA:
3249 case R_PPC_DTPREL16:
3250 case R_PPC_DTPREL16_LO:
3251 case R_PPC_DTPREL16_HI:
3252 case R_PPC_DTPREL16_HA:
3257 case R_PPC_REL16_LO:
3258 case R_PPC_REL16_HI:
3259 case R_PPC_REL16_HA:
3260 htab->can_use_new_plt = 1;
3263 /* These are just markers. */
3265 case R_PPC_EMB_MRKREF:
3270 /* These should only appear in dynamic objects. */
3272 case R_PPC_GLOB_DAT:
3273 case R_PPC_JMP_SLOT:
3274 case R_PPC_RELATIVE:
3277 /* These aren't handled yet. We'll report an error later. */
3279 case R_PPC_EMB_RELSEC16:
3280 case R_PPC_EMB_RELST_LO:
3281 case R_PPC_EMB_RELST_HI:
3282 case R_PPC_EMB_RELST_HA:
3283 case R_PPC_EMB_BIT_FLD:
3286 /* This refers only to functions defined in the shared library. */
3287 case R_PPC_LOCAL24PC:
3288 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3289 htab->plt_type = PLT_OLD;
3292 /* This relocation describes the C++ object vtable hierarchy.
3293 Reconstruct it for later use during GC. */
3294 case R_PPC_GNU_VTINHERIT:
3295 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3299 /* This relocation describes which C++ vtable entries are actually
3300 used. Record for later use during GC. */
3301 case R_PPC_GNU_VTENTRY:
3302 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3306 /* We shouldn't really be seeing these. */
3309 info->flags |= DF_STATIC_TLS;
3313 case R_PPC_DTPMOD32:
3314 case R_PPC_DTPREL32:
3318 case R_PPC_TPREL16_LO:
3319 case R_PPC_TPREL16_HI:
3320 case R_PPC_TPREL16_HA:
3322 info->flags |= DF_STATIC_TLS;
3328 && (sec->flags & SEC_CODE) != 0
3329 && (info->shared || info->pie)
3330 && htab->plt_type == PLT_UNSET)
3332 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3333 the start of a function, which assembles to a REL32
3334 reference to .got2. If we detect one of these, then
3335 force the old PLT layout because the linker cannot
3336 reliably deduce the GOT pointer value needed for
3340 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3343 htab->plt_type = PLT_OLD;
3349 case R_PPC_REL14_BRTAKEN:
3350 case R_PPC_REL14_BRNTAKEN:
3353 if (h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3355 htab->plt_type = PLT_OLD;
3363 case R_PPC_ADDR16_LO:
3364 case R_PPC_ADDR16_HI:
3365 case R_PPC_ADDR16_HA:
3367 case R_PPC_ADDR14_BRTAKEN:
3368 case R_PPC_ADDR14_BRNTAKEN:
3371 if (h != NULL && !info->shared)
3373 /* We may need a plt entry if the symbol turns out to be
3374 a function defined in a dynamic object. */
3375 if (!update_plt_info (abfd, h, NULL, 0))
3378 /* We may need a copy reloc too. */
3383 /* If we are creating a shared library, and this is a reloc
3384 against a global symbol, or a non PC relative reloc
3385 against a local symbol, then we need to copy the reloc
3386 into the shared library. However, if we are linking with
3387 -Bsymbolic, we do not need to copy a reloc against a
3388 global symbol which is defined in an object we are
3389 including in the link (i.e., DEF_REGULAR is set). At
3390 this point we have not seen all the input files, so it is
3391 possible that DEF_REGULAR is not set now but will be set
3392 later (it is never cleared). In case of a weak definition,
3393 DEF_REGULAR may be cleared later by a strong definition in
3394 a shared library. We account for that possibility below by
3395 storing information in the dyn_relocs field of the hash
3396 table entry. A similar situation occurs when creating
3397 shared libraries and symbol visibility changes render the
3400 If on the other hand, we are creating an executable, we
3401 may need to keep relocations for symbols satisfied by a
3402 dynamic library if we manage to avoid copy relocs for the
3405 && (MUST_BE_DYN_RELOC (r_type)
3407 && (! info->symbolic
3408 || h->root.type == bfd_link_hash_defweak
3409 || !h->def_regular))))
3410 || (ELIMINATE_COPY_RELOCS
3413 && (h->root.type == bfd_link_hash_defweak
3414 || !h->def_regular)))
3416 struct ppc_elf_dyn_relocs *p;
3417 struct ppc_elf_dyn_relocs **head;
3421 "ppc_elf_check_relocs needs to "
3422 "create relocation for %s\n",
3423 (h && h->root.root.string
3424 ? h->root.root.string : "<unknown>"));
3430 name = (bfd_elf_string_from_elf_section
3432 elf_elfheader (abfd)->e_shstrndx,
3433 elf_section_data (sec)->rel_hdr.sh_name));
3437 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3438 && strcmp (bfd_get_section_name (abfd, sec),
3441 if (htab->elf.dynobj == NULL)
3442 htab->elf.dynobj = abfd;
3443 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3448 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3449 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3450 | SEC_ALLOC | SEC_LOAD);
3451 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3455 || ! bfd_set_section_alignment (htab->elf.dynobj,
3459 elf_section_data (sec)->sreloc = sreloc;
3462 /* If this is a global symbol, we count the number of
3463 relocations we need for this symbol. */
3466 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3470 /* Track dynamic relocs needed for local syms too.
3471 We really need local syms available to do this
3477 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3482 vpp = &elf_section_data (s)->local_dynrel;
3483 head = (struct ppc_elf_dyn_relocs **) vpp;
3487 if (p == NULL || p->sec != sec)
3489 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3500 if (!MUST_BE_DYN_RELOC (r_type))
3511 /* Merge backend specific data from an object file to the output
3512 object file when linking. */
3515 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3521 if (!is_ppc_elf_target (ibfd->xvec)
3522 || !is_ppc_elf_target (obfd->xvec))
3525 /* Check if we have the same endianess. */
3526 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3529 new_flags = elf_elfheader (ibfd)->e_flags;
3530 old_flags = elf_elfheader (obfd)->e_flags;
3531 if (!elf_flags_init (obfd))
3533 /* First call, no flags set. */
3534 elf_flags_init (obfd) = TRUE;
3535 elf_elfheader (obfd)->e_flags = new_flags;
3538 /* Compatible flags are ok. */
3539 else if (new_flags == old_flags)
3542 /* Incompatible flags. */
3545 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3546 to be linked with either. */
3548 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3549 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3552 (*_bfd_error_handler)
3553 (_("%B: compiled with -mrelocatable and linked with "
3554 "modules compiled normally"), ibfd);
3556 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3557 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3560 (*_bfd_error_handler)
3561 (_("%B: compiled normally and linked with "
3562 "modules compiled with -mrelocatable"), ibfd);
3565 /* The output is -mrelocatable-lib iff both the input files are. */
3566 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3567 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3569 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3570 but each input file is either -mrelocatable or -mrelocatable-lib. */
3571 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3572 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3573 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3574 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3576 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3577 any module uses it. */
3578 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3580 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3581 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3583 /* Warn about any other mismatches. */
3584 if (new_flags != old_flags)
3587 (*_bfd_error_handler)
3588 (_("%B: uses different e_flags (0x%lx) fields "
3589 "than previous modules (0x%lx)"),
3590 ibfd, (long) new_flags, (long) old_flags);
3595 bfd_set_error (bfd_error_bad_value);
3603 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3604 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3606 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3607 struct bfd_link_info *info,
3611 struct ppc_elf_link_hash_table *htab;
3614 htab = ppc_elf_hash_table (info);
3616 if (htab->plt_type == PLT_UNSET)
3617 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3618 ? PLT_OLD : PLT_NEW);
3620 htab->emit_stub_syms = emit_stub_syms;
3622 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3624 if (htab->plt_type == PLT_NEW)
3626 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3627 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3629 /* The new PLT is a loaded section. */
3630 if (htab->plt != NULL
3631 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3634 /* The new GOT is not executable. */
3635 if (htab->got != NULL
3636 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3641 /* Stop an unused .glink section from affecting .text alignment. */
3642 if (htab->glink != NULL
3643 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3646 return htab->plt_type == PLT_NEW;
3649 /* Return the section that should be marked against GC for a given
3653 ppc_elf_gc_mark_hook (asection *sec,
3654 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3655 Elf_Internal_Rela *rel,
3656 struct elf_link_hash_entry *h,
3657 Elf_Internal_Sym *sym)
3661 switch (ELF32_R_TYPE (rel->r_info))
3663 case R_PPC_GNU_VTINHERIT:
3664 case R_PPC_GNU_VTENTRY:
3668 switch (h->root.type)
3670 case bfd_link_hash_defined:
3671 case bfd_link_hash_defweak:
3672 return h->root.u.def.section;
3674 case bfd_link_hash_common:
3675 return h->root.u.c.p->section;
3683 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3688 /* Update the got, plt and dynamic reloc reference counts for the
3689 section being removed. */
3692 ppc_elf_gc_sweep_hook (bfd *abfd,
3693 struct bfd_link_info *info,
3695 const Elf_Internal_Rela *relocs)
3697 struct ppc_elf_link_hash_table *htab;
3698 Elf_Internal_Shdr *symtab_hdr;
3699 struct elf_link_hash_entry **sym_hashes;
3700 bfd_signed_vma *local_got_refcounts;
3701 const Elf_Internal_Rela *rel, *relend;
3704 if ((sec->flags & SEC_ALLOC) == 0)
3707 elf_section_data (sec)->local_dynrel = NULL;
3709 htab = ppc_elf_hash_table (info);
3710 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3711 sym_hashes = elf_sym_hashes (abfd);
3712 local_got_refcounts = elf_local_got_refcounts (abfd);
3713 got2 = bfd_get_section_by_name (abfd, ".got2");
3715 relend = relocs + sec->reloc_count;
3716 for (rel = relocs; rel < relend; rel++)
3718 unsigned long r_symndx;
3719 enum elf_ppc_reloc_type r_type;
3720 struct elf_link_hash_entry *h = NULL;
3722 r_symndx = ELF32_R_SYM (rel->r_info);
3723 if (r_symndx >= symtab_hdr->sh_info)
3725 struct ppc_elf_dyn_relocs **pp, *p;
3726 struct ppc_elf_link_hash_entry *eh;
3728 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3729 while (h->root.type == bfd_link_hash_indirect
3730 || h->root.type == bfd_link_hash_warning)
3731 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3732 eh = (struct ppc_elf_link_hash_entry *) h;
3734 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3737 /* Everything must go for SEC. */
3743 r_type = ELF32_R_TYPE (rel->r_info);
3746 case R_PPC_GOT_TLSLD16:
3747 case R_PPC_GOT_TLSLD16_LO:
3748 case R_PPC_GOT_TLSLD16_HI:
3749 case R_PPC_GOT_TLSLD16_HA:
3750 htab->tlsld_got.refcount -= 1;
3753 case R_PPC_GOT_TLSGD16:
3754 case R_PPC_GOT_TLSGD16_LO:
3755 case R_PPC_GOT_TLSGD16_HI:
3756 case R_PPC_GOT_TLSGD16_HA:
3757 case R_PPC_GOT_TPREL16:
3758 case R_PPC_GOT_TPREL16_LO:
3759 case R_PPC_GOT_TPREL16_HI:
3760 case R_PPC_GOT_TPREL16_HA:
3761 case R_PPC_GOT_DTPREL16:
3762 case R_PPC_GOT_DTPREL16_LO:
3763 case R_PPC_GOT_DTPREL16_HI:
3764 case R_PPC_GOT_DTPREL16_HA:
3766 case R_PPC_GOT16_LO:
3767 case R_PPC_GOT16_HI:
3768 case R_PPC_GOT16_HA:
3771 if (h->got.refcount > 0)
3774 else if (local_got_refcounts != NULL)
3776 if (local_got_refcounts[r_symndx] > 0)
3777 local_got_refcounts[r_symndx]--;
3783 case R_PPC_REL14_BRTAKEN:
3784 case R_PPC_REL14_BRNTAKEN:
3786 if (h == NULL || h == htab->elf.hgot)
3793 case R_PPC_ADDR16_LO:
3794 case R_PPC_ADDR16_HI:
3795 case R_PPC_ADDR16_HA:
3797 case R_PPC_ADDR14_BRTAKEN:
3798 case R_PPC_ADDR14_BRNTAKEN:
3805 case R_PPC_PLTREL24:
3806 case R_PPC_PLTREL32:
3807 case R_PPC_PLT16_LO:
3808 case R_PPC_PLT16_HI:
3809 case R_PPC_PLT16_HA:
3812 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3813 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3814 if (ent->plt.refcount > 0)
3815 ent->plt.refcount -= 1;
3826 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3829 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3831 struct ppc_elf_link_hash_table *htab;
3833 htab = ppc_elf_hash_table (info);
3834 if (htab->plt_type == PLT_NEW
3835 && htab->plt != NULL
3836 && htab->plt->output_section != NULL)
3838 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3839 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3842 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3843 FALSE, FALSE, TRUE);
3844 return _bfd_elf_tls_setup (obfd, info);
3847 /* Run through all the TLS relocs looking for optimization
3851 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3852 struct bfd_link_info *info)
3856 struct ppc_elf_link_hash_table *htab;
3858 if (info->relocatable || info->shared)
3861 htab = ppc_elf_hash_table (info);
3862 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3864 Elf_Internal_Sym *locsyms = NULL;
3865 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3867 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3868 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3870 Elf_Internal_Rela *relstart, *rel, *relend;
3871 int expecting_tls_get_addr;
3873 /* Read the relocations. */
3874 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3876 if (relstart == NULL)
3879 expecting_tls_get_addr = 0;
3880 relend = relstart + sec->reloc_count;
3881 for (rel = relstart; rel < relend; rel++)
3883 enum elf_ppc_reloc_type r_type;
3884 unsigned long r_symndx;
3885 struct elf_link_hash_entry *h = NULL;
3887 char tls_set, tls_clear;
3888 bfd_boolean is_local;
3890 r_symndx = ELF32_R_SYM (rel->r_info);
3891 if (r_symndx >= symtab_hdr->sh_info)
3893 struct elf_link_hash_entry **sym_hashes;
3895 sym_hashes = elf_sym_hashes (ibfd);
3896 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3897 while (h->root.type == bfd_link_hash_indirect
3898 || h->root.type == bfd_link_hash_warning)
3899 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3907 r_type = ELF32_R_TYPE (rel->r_info);
3910 case R_PPC_GOT_TLSLD16:
3911 case R_PPC_GOT_TLSLD16_LO:
3912 case R_PPC_GOT_TLSLD16_HI:
3913 case R_PPC_GOT_TLSLD16_HA:
3914 /* These relocs should never be against a symbol
3915 defined in a shared lib. Leave them alone if
3916 that turns out to be the case. */
3917 expecting_tls_get_addr = 0;
3918 htab->tlsld_got.refcount -= 1;
3925 expecting_tls_get_addr = 1;
3928 case R_PPC_GOT_TLSGD16:
3929 case R_PPC_GOT_TLSGD16_LO:
3930 case R_PPC_GOT_TLSGD16_HI:
3931 case R_PPC_GOT_TLSGD16_HA:
3937 tls_set = TLS_TLS | TLS_TPRELGD;
3939 expecting_tls_get_addr = 1;
3942 case R_PPC_GOT_TPREL16:
3943 case R_PPC_GOT_TPREL16_LO:
3944 case R_PPC_GOT_TPREL16_HI:
3945 case R_PPC_GOT_TPREL16_HA:
3946 expecting_tls_get_addr = 0;
3951 tls_clear = TLS_TPREL;
3958 case R_PPC_REL14_BRTAKEN:
3959 case R_PPC_REL14_BRNTAKEN:
3961 if (expecting_tls_get_addr
3963 && h == htab->tls_get_addr)
3965 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3966 if (ent != NULL && ent->plt.refcount > 0)
3967 ent->plt.refcount -= 1;
3969 expecting_tls_get_addr = 0;
3973 expecting_tls_get_addr = 0;
3981 /* We managed to get rid of a got entry. */
3982 if (h->got.refcount > 0)
3983 h->got.refcount -= 1;
3985 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3989 Elf_Internal_Sym *sym;
3990 bfd_signed_vma *lgot_refs;
3993 if (locsyms == NULL)
3995 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3996 if (locsyms == NULL)
3997 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3998 symtab_hdr->sh_info,
3999 0, NULL, NULL, NULL);
4000 if (locsyms == NULL)
4002 if (elf_section_data (sec)->relocs != relstart)
4007 sym = locsyms + r_symndx;
4008 lgot_refs = elf_local_got_refcounts (ibfd);
4009 if (lgot_refs == NULL)
4013 /* We managed to get rid of a got entry. */
4014 if (lgot_refs[r_symndx] > 0)
4015 lgot_refs[r_symndx] -= 1;
4017 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4018 tls_mask = &lgot_masks[r_symndx];
4021 *tls_mask |= tls_set;
4022 *tls_mask &= ~tls_clear;
4025 if (elf_section_data (sec)->relocs != relstart)
4030 && (symtab_hdr->contents != (unsigned char *) locsyms))
4032 if (!info->keep_memory)
4035 symtab_hdr->contents = (unsigned char *) locsyms;
4041 /* Adjust a symbol defined by a dynamic object and referenced by a
4042 regular object. The current definition is in some section of the
4043 dynamic object, but we're not including those sections. We have to
4044 change the definition to something the rest of the link can
4048 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4049 struct elf_link_hash_entry *h)
4051 struct ppc_elf_link_hash_table *htab;
4053 unsigned int power_of_two;
4056 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4057 h->root.root.string);
4060 /* Make sure we know what is going on here. */
4061 htab = ppc_elf_hash_table (info);
4062 BFD_ASSERT (htab->elf.dynobj != NULL
4064 || h->u.weakdef != NULL
4067 && !h->def_regular)));
4069 /* Deal with function syms. */
4070 if (h->type == STT_FUNC
4073 /* Clear procedure linkage table information for any symbol that
4074 won't need a .plt entry. */
4075 struct plt_entry *ent;
4076 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4077 if (ent->plt.refcount > 0)
4080 || SYMBOL_CALLS_LOCAL (info, h)
4081 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4082 && h->root.type == bfd_link_hash_undefweak))
4084 /* A PLT entry is not required/allowed when:
4086 1. We are not using ld.so; because then the PLT entry
4087 can't be set up, so we can't use one. In this case,
4088 ppc_elf_adjust_dynamic_symbol won't even be called.
4090 2. GC has rendered the entry unused.
4092 3. We know for certain that a call to this symbol
4093 will go to this object, or will remain undefined. */
4094 h->plt.plist = NULL;
4100 h->plt.plist = NULL;
4102 /* If this is a weak symbol, and there is a real definition, the
4103 processor independent code will have arranged for us to see the
4104 real definition first, and we can just use the same value. */
4105 if (h->u.weakdef != NULL)
4107 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4108 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4109 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4110 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4111 if (ELIMINATE_COPY_RELOCS)
4112 h->non_got_ref = h->u.weakdef->non_got_ref;
4116 /* This is a reference to a symbol defined by a dynamic object which
4117 is not a function. */
4119 /* If we are creating a shared library, we must presume that the
4120 only references to the symbol are via the global offset table.
4121 For such cases we need not do anything here; the relocations will
4122 be handled correctly by relocate_section. */
4126 /* If there are no references to this symbol that do not use the
4127 GOT, we don't need to generate a copy reloc. */
4128 if (!h->non_got_ref)
4131 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4132 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4133 do this if there are any small data relocations. */
4134 if (ELIMINATE_COPY_RELOCS
4135 && !ppc_elf_hash_entry (h)->has_sda_refs)
4137 struct ppc_elf_dyn_relocs *p;
4138 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4140 s = p->sec->output_section;
4141 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4154 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4155 h->root.root.string);
4159 /* We must allocate the symbol in our .dynbss section, which will
4160 become part of the .bss section of the executable. There will be
4161 an entry for this symbol in the .dynsym section. The dynamic
4162 object will contain position independent code, so all references
4163 from the dynamic object to this symbol will go through the global
4164 offset table. The dynamic linker will use the .dynsym entry to
4165 determine the address it must put in the global offset table, so
4166 both the dynamic object and the regular object will refer to the
4167 same memory location for the variable.
4169 Of course, if the symbol is referenced using SDAREL relocs, we
4170 must instead allocate it in .sbss. */
4172 if (ppc_elf_hash_entry (h)->has_sda_refs)
4176 BFD_ASSERT (s != NULL);
4178 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4179 copy the initial value out of the dynamic object and into the
4180 runtime process image. We need to remember the offset into the
4181 .rela.bss section we are going to use. */
4182 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4186 if (ppc_elf_hash_entry (h)->has_sda_refs)
4187 srel = htab->relsbss;
4189 srel = htab->relbss;
4190 BFD_ASSERT (srel != NULL);
4191 srel->size += sizeof (Elf32_External_Rela);
4195 /* We need to figure out the alignment required for this symbol. I
4196 have no idea how ELF linkers handle this. */
4197 power_of_two = bfd_log2 (h->size);
4198 if (power_of_two > 4)
4201 /* Apply the required alignment. */
4202 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4203 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4205 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4209 /* Define the symbol as being at this point in the section. */
4210 h->root.u.def.section = s;
4211 h->root.u.def.value = s->size;
4213 /* Increment the section size to make room for the symbol. */
4219 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4220 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4221 specifying the addend on the plt relocation. For -fpic code, the sym
4222 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4223 xxxxxxxx.got2.plt_pic32.<callee>. */
4226 add_stub_sym (struct plt_entry *ent,
4227 struct elf_link_hash_entry *h,
4228 struct bfd_link_info *info)
4230 struct elf_link_hash_entry *sh;
4231 size_t len1, len2, len3;
4234 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4236 if (info->shared || info->pie)
4237 stub = ".plt_pic32.";
4239 stub = ".plt_call32.";
4241 len1 = strlen (h->root.root.string);
4242 len2 = strlen (stub);
4245 len3 = strlen (ent->sec->name);
4246 name = bfd_malloc (len1 + len2 + len3 + 9);
4249 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4251 memcpy (name + 8, ent->sec->name, len3);
4252 memcpy (name + 8 + len3, stub, len2);
4253 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4254 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4257 if (sh->root.type == bfd_link_hash_new)
4259 sh->root.type = bfd_link_hash_defined;
4260 sh->root.u.def.section = htab->glink;
4261 sh->root.u.def.value = ent->glink_offset;
4262 sh->ref_regular = 1;
4263 sh->def_regular = 1;
4264 sh->ref_regular_nonweak = 1;
4265 sh->forced_local = 1;
4271 /* Allocate NEED contiguous space in .got, and return the offset.
4272 Handles allocation of the got header when crossing 32k. */
4275 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4278 unsigned int max_before_header;
4280 if (htab->plt_type == PLT_VXWORKS)
4282 where = htab->got->size;
4283 htab->got->size += need;
4287 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4288 if (need <= htab->got_gap)
4290 where = max_before_header - htab->got_gap;
4291 htab->got_gap -= need;
4295 if (htab->got->size + need > max_before_header
4296 && htab->got->size <= max_before_header)
4298 htab->got_gap = max_before_header - htab->got->size;
4299 htab->got->size = max_before_header + htab->got_header_size;
4301 where = htab->got->size;
4302 htab->got->size += need;
4308 /* Allocate space in associated reloc sections for dynamic relocs. */
4311 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4313 struct bfd_link_info *info = inf;
4314 struct ppc_elf_link_hash_entry *eh;
4315 struct ppc_elf_link_hash_table *htab;
4316 struct ppc_elf_dyn_relocs *p;
4318 if (h->root.type == bfd_link_hash_indirect)
4321 if (h->root.type == bfd_link_hash_warning)
4322 /* When warning symbols are created, they **replace** the "real"
4323 entry in the hash table, thus we never get to see the real
4324 symbol in a hash traversal. So look at it now. */
4325 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4327 htab = ppc_elf_hash_table (info);
4328 if (htab->elf.dynamic_sections_created)
4330 struct plt_entry *ent;
4331 bfd_boolean doneone = FALSE;
4332 bfd_vma plt_offset = 0, glink_offset = 0;
4334 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4335 if (ent->plt.refcount > 0)
4337 /* Make sure this symbol is output as a dynamic symbol. */
4338 if (h->dynindx == -1
4339 && !h->forced_local)
4341 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4346 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4348 asection *s = htab->plt;
4350 if (htab->plt_type == PLT_NEW)
4354 plt_offset = s->size;
4357 ent->plt.offset = plt_offset;
4360 if (!doneone || info->shared || info->pie)
4362 glink_offset = s->size;
4363 s->size += GLINK_ENTRY_SIZE;
4369 h->root.u.def.section = s;
4370 h->root.u.def.value = glink_offset;
4372 ent->glink_offset = glink_offset;
4374 if (htab->emit_stub_syms
4375 && !add_stub_sym (ent, h, info))
4382 /* If this is the first .plt entry, make room
4383 for the special first entry. */
4385 s->size += htab->plt_initial_entry_size;
4387 /* The PowerPC PLT is actually composed of two
4388 parts, the first part is 2 words (for a load
4389 and a jump), and then there is a remaining
4390 word available at the end. */
4391 plt_offset = (htab->plt_initial_entry_size
4392 + (htab->plt_slot_size
4394 - htab->plt_initial_entry_size)
4395 / htab->plt_entry_size)));
4397 /* If this symbol is not defined in a regular
4398 file, and we are not generating a shared
4399 library, then set the symbol to this location
4400 in the .plt. This is required to make
4401 function pointers compare as equal between
4402 the normal executable and the shared library. */
4406 h->root.u.def.section = s;
4407 h->root.u.def.value = plt_offset;
4410 /* Make room for this entry. */
4411 s->size += htab->plt_entry_size;
4412 /* After the 8192nd entry, room for two entries
4414 if (htab->plt_type == PLT_OLD
4415 && (s->size - htab->plt_initial_entry_size)
4416 / htab->plt_entry_size
4417 > PLT_NUM_SINGLE_ENTRIES)
4418 s->size += htab->plt_entry_size;
4420 ent->plt.offset = plt_offset;
4423 /* We also need to make an entry in the .rela.plt section. */
4426 htab->relplt->size += sizeof (Elf32_External_Rela);
4428 if (htab->plt_type == PLT_VXWORKS)
4430 /* Allocate space for the unloaded relocations. */
4434 == (bfd_vma) htab->plt_initial_entry_size)
4436 htab->srelplt2->size
4437 += sizeof (Elf32_External_Rela)
4438 * VXWORKS_PLTRESOLVE_RELOCS;
4441 htab->srelplt2->size
4442 += sizeof (Elf32_External_Rela)
4443 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4446 /* Every PLT entry has an associated GOT entry in
4448 htab->sgotplt->size += 4;
4454 ent->plt.offset = (bfd_vma) -1;
4458 h->plt.plist = NULL;
4465 h->plt.plist = NULL;
4469 eh = (struct ppc_elf_link_hash_entry *) h;
4470 if (eh->elf.got.refcount > 0)
4472 /* Make sure this symbol is output as a dynamic symbol. */
4473 if (eh->elf.dynindx == -1
4474 && !eh->elf.forced_local)
4476 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4480 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4481 && !eh->elf.def_dynamic)
4482 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4483 eh->elf.got.offset = (bfd_vma) -1;
4487 unsigned int need = 0;
4488 if ((eh->tls_mask & TLS_TLS) != 0)
4490 if ((eh->tls_mask & TLS_LD) != 0)
4492 if ((eh->tls_mask & TLS_GD) != 0)
4494 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4496 if ((eh->tls_mask & TLS_DTPREL) != 0)
4501 eh->elf.got.offset = allocate_got (htab, need);
4502 dyn = htab->elf.dynamic_sections_created;
4504 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4505 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4506 || eh->elf.root.type != bfd_link_hash_undefweak))
4508 /* All the entries we allocated need relocs.
4509 Except LD only needs one. */
4510 if ((eh->tls_mask & TLS_LD) != 0)
4512 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4517 eh->elf.got.offset = (bfd_vma) -1;
4519 if (eh->dyn_relocs == NULL)
4522 /* In the shared -Bsymbolic case, discard space allocated for
4523 dynamic pc-relative relocs against symbols which turn out to be
4524 defined in regular objects. For the normal shared case, discard
4525 space for relocs that have become local due to symbol visibility
4530 /* Relocs that use pc_count are those that appear on a call insn,
4531 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4532 generated via assembly. We want calls to protected symbols to
4533 resolve directly to the function rather than going via the plt.
4534 If people want function pointer comparisons to work as expected
4535 then they should avoid writing weird assembly. */
4536 if (SYMBOL_CALLS_LOCAL (info, h))
4538 struct ppc_elf_dyn_relocs **pp;
4540 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4542 p->count -= p->pc_count;
4551 /* Also discard relocs on undefined weak syms with non-default
4553 if (eh->dyn_relocs != NULL
4554 && h->root.type == bfd_link_hash_undefweak)
4556 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4557 eh->dyn_relocs = NULL;
4559 /* Make sure undefined weak symbols are output as a dynamic
4561 else if (h->dynindx == -1
4562 && !h->forced_local)
4564 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4569 else if (ELIMINATE_COPY_RELOCS)
4571 /* For the non-shared case, discard space for relocs against
4572 symbols which turn out to need copy relocs or are not
4579 /* Make sure this symbol is output as a dynamic symbol.
4580 Undefined weak syms won't yet be marked as dynamic. */
4581 if (h->dynindx == -1
4582 && !h->forced_local)
4584 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4588 /* If that succeeded, we know we'll be keeping all the
4590 if (h->dynindx != -1)
4594 eh->dyn_relocs = NULL;
4599 /* Finally, allocate space. */
4600 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4602 asection *sreloc = elf_section_data (p->sec)->sreloc;
4603 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4609 /* Find any dynamic relocs that apply to read-only sections. */
4612 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4614 struct ppc_elf_dyn_relocs *p;
4616 if (h->root.type == bfd_link_hash_indirect)
4619 if (h->root.type == bfd_link_hash_warning)
4620 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4622 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4624 asection *s = p->sec->output_section;
4627 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4628 == (SEC_READONLY | SEC_ALLOC)))
4630 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4632 /* Not an error, just cut short the traversal. */
4639 /* Set the sizes of the dynamic sections. */
4642 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4643 struct bfd_link_info *info)
4645 struct ppc_elf_link_hash_table *htab;
4651 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4654 htab = ppc_elf_hash_table (info);
4655 BFD_ASSERT (htab->elf.dynobj != NULL);
4657 if (elf_hash_table (info)->dynamic_sections_created)
4659 /* Set the contents of the .interp section to the interpreter. */
4660 if (info->executable)
4662 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4663 BFD_ASSERT (s != NULL);
4664 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4665 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4669 if (htab->plt_type == PLT_OLD)
4670 htab->got_header_size = 16;
4671 else if (htab->plt_type == PLT_NEW)
4672 htab->got_header_size = 12;
4674 /* Set up .got offsets for local syms, and space for local dynamic
4676 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4678 bfd_signed_vma *local_got;
4679 bfd_signed_vma *end_local_got;
4681 bfd_size_type locsymcount;
4682 Elf_Internal_Shdr *symtab_hdr;
4684 if (!is_ppc_elf_target (ibfd->xvec))
4687 for (s = ibfd->sections; s != NULL; s = s->next)
4689 struct ppc_elf_dyn_relocs *p;
4691 for (p = ((struct ppc_elf_dyn_relocs *)
4692 elf_section_data (s)->local_dynrel);
4696 if (!bfd_is_abs_section (p->sec)
4697 && bfd_is_abs_section (p->sec->output_section))
4699 /* Input section has been discarded, either because
4700 it is a copy of a linkonce section or due to
4701 linker script /DISCARD/, so we'll be discarding
4704 else if (p->count != 0)
4706 elf_section_data (p->sec)->sreloc->size
4707 += p->count * sizeof (Elf32_External_Rela);
4708 if ((p->sec->output_section->flags
4709 & (SEC_READONLY | SEC_ALLOC))
4710 == (SEC_READONLY | SEC_ALLOC))
4711 info->flags |= DF_TEXTREL;
4716 local_got = elf_local_got_refcounts (ibfd);
4720 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4721 locsymcount = symtab_hdr->sh_info;
4722 end_local_got = local_got + locsymcount;
4723 lgot_masks = (char *) end_local_got;
4724 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4727 if (*lgot_masks == (TLS_TLS | TLS_LD))
4729 /* If just an LD reloc, we'll just use
4730 htab->tlsld_got.offset. */
4731 htab->tlsld_got.refcount += 1;
4732 *local_got = (bfd_vma) -1;
4736 unsigned int need = 0;
4737 if ((*lgot_masks & TLS_TLS) != 0)
4739 if ((*lgot_masks & TLS_GD) != 0)
4741 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4743 if ((*lgot_masks & TLS_DTPREL) != 0)
4748 *local_got = allocate_got (htab, need);
4750 htab->relgot->size += (need
4751 * (sizeof (Elf32_External_Rela) / 4));
4755 *local_got = (bfd_vma) -1;
4758 if (htab->tlsld_got.refcount > 0)
4760 htab->tlsld_got.offset = allocate_got (htab, 8);
4762 htab->relgot->size += sizeof (Elf32_External_Rela);
4765 htab->tlsld_got.offset = (bfd_vma) -1;
4767 if (htab->is_vxworks)
4769 /* Mark the GOT and PLT symbols as having relocations; they might
4770 not, but we won't know for sure until we build the GOT in
4771 finish_dynamic_symbol. */
4773 htab->elf.hgot->indx = -2;
4776 htab->elf.hplt->indx = -2;
4777 if (htab->plt->flags & SEC_CODE)
4778 htab->elf.hplt->type = STT_FUNC;
4782 /* Allocate space for global sym dynamic relocs. */
4783 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4785 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
4787 unsigned int g_o_t = 32768;
4789 /* If we haven't allocated the header, do so now. When we get here,
4790 for old plt/got the got size will be 0 to 32764 (not allocated),
4791 or 32780 to 65536 (header allocated). For new plt/got, the
4792 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4793 if (htab->got->size <= 32768)
4795 g_o_t = htab->got->size;
4796 if (htab->plt_type == PLT_OLD)
4798 htab->got->size += htab->got_header_size;
4801 htab->elf.hgot->root.u.def.value = g_o_t;
4804 if (htab->glink != NULL && htab->glink->size != 0)
4806 htab->glink_pltresolve = htab->glink->size;
4807 /* Space for the branch table. */
4808 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4809 /* Pad out to align the start of PLTresolve. */
4810 htab->glink->size += -htab->glink->size & 15;
4811 htab->glink->size += GLINK_PLTRESOLVE;
4813 if (htab->emit_stub_syms)
4815 struct elf_link_hash_entry *sh;
4816 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4817 TRUE, FALSE, FALSE);
4820 if (sh->root.type == bfd_link_hash_new)
4822 sh->root.type = bfd_link_hash_defined;
4823 sh->root.u.def.section = htab->glink;
4824 sh->root.u.def.value = htab->glink_pltresolve;
4825 sh->ref_regular = 1;
4826 sh->def_regular = 1;
4827 sh->ref_regular_nonweak = 1;
4828 sh->forced_local = 1;
4831 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4832 TRUE, FALSE, FALSE);
4835 if (sh->root.type == bfd_link_hash_new)
4837 sh->root.type = bfd_link_hash_defined;
4838 sh->root.u.def.section = htab->glink;
4839 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4840 sh->ref_regular = 1;
4841 sh->def_regular = 1;
4842 sh->ref_regular_nonweak = 1;
4843 sh->forced_local = 1;
4849 /* We've now determined the sizes of the various dynamic sections.
4850 Allocate memory for them. */
4852 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4854 bfd_boolean strip_section = TRUE;
4856 if ((s->flags & SEC_LINKER_CREATED) == 0)
4862 || s == htab->sgotplt
4864 || s == htab->dynbss
4865 || s == htab->dynsbss)
4867 /* We'd like to strip these sections if they aren't needed, but if
4868 we've exported dynamic symbols from them we must leave them.
4869 It's too late to tell BFD to get rid of the symbols. */
4870 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
4871 strip_section = FALSE;
4872 /* Strip this section if we don't need it; see the
4875 else if (s == htab->sdata[0].section
4876 || s == htab->sdata[1].section)
4878 /* Strip these too. */
4880 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4884 /* Remember whether there are any relocation sections. */
4887 /* We use the reloc_count field as a counter if we need
4888 to copy relocs into the output file. */
4894 /* It's not one of our sections, so don't allocate space. */
4898 if (s->size == 0 && strip_section)
4900 /* If we don't need this section, strip it from the
4901 output file. This is mostly to handle .rela.bss and
4902 .rela.plt. We must create both sections in
4903 create_dynamic_sections, because they must be created
4904 before the linker maps input sections to output
4905 sections. The linker does that before
4906 adjust_dynamic_symbol is called, and it is that
4907 function which decides whether anything needs to go
4908 into these sections. */
4909 s->flags |= SEC_EXCLUDE;
4913 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4916 /* Allocate memory for the section contents. */
4917 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4918 if (s->contents == NULL)
4922 if (htab->elf.dynamic_sections_created)
4924 /* Add some entries to the .dynamic section. We fill in the
4925 values later, in ppc_elf_finish_dynamic_sections, but we
4926 must add the entries now so that we get the correct size for
4927 the .dynamic section. The DT_DEBUG entry is filled in by the
4928 dynamic linker and used by the debugger. */
4929 #define add_dynamic_entry(TAG, VAL) \
4930 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4932 if (info->executable)
4934 if (!add_dynamic_entry (DT_DEBUG, 0))
4938 if (htab->plt != NULL && htab->plt->size != 0)
4940 if (!add_dynamic_entry (DT_PLTGOT, 0)
4941 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4942 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4943 || !add_dynamic_entry (DT_JMPREL, 0))
4947 if (htab->glink != NULL && htab->glink->size != 0)
4949 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4955 if (!add_dynamic_entry (DT_RELA, 0)
4956 || !add_dynamic_entry (DT_RELASZ, 0)
4957 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4961 /* If any dynamic relocs apply to a read-only section, then we
4962 need a DT_TEXTREL entry. */
4963 if ((info->flags & DF_TEXTREL) == 0)
4964 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4967 if ((info->flags & DF_TEXTREL) != 0)
4969 if (!add_dynamic_entry (DT_TEXTREL, 0))
4973 #undef add_dynamic_entry
4978 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4980 static const int shared_stub_entry[] =
4982 0x7c0802a6, /* mflr 0 */
4983 0x429f0005, /* bcl 20, 31, .Lxxx */
4984 0x7d6802a6, /* mflr 11 */
4985 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4986 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4987 0x7c0803a6, /* mtlr 0 */
4988 0x7d6903a6, /* mtctr 11 */
4989 0x4e800420, /* bctr */
4992 static const int stub_entry[] =
4994 0x3d600000, /* lis 11,xxx@ha */
4995 0x396b0000, /* addi 11,11,xxx@l */
4996 0x7d6903a6, /* mtctr 11 */
4997 0x4e800420, /* bctr */
5001 ppc_elf_relax_section (bfd *abfd,
5003 struct bfd_link_info *link_info,
5008 struct one_fixup *next;
5014 Elf_Internal_Shdr *symtab_hdr;
5015 bfd_byte *contents = NULL;
5016 Elf_Internal_Sym *isymbuf = NULL;
5017 Elf_Internal_Rela *internal_relocs = NULL;
5018 Elf_Internal_Rela *irel, *irelend;
5019 struct one_fixup *fixups = NULL;
5020 bfd_boolean changed;
5021 struct ppc_elf_link_hash_table *htab;
5022 bfd_size_type trampoff;
5027 /* Nothing to do if there are no relocations, and no need to do
5028 anything with non-alloc sections. */
5029 if ((isec->flags & SEC_ALLOC) == 0
5030 || (isec->flags & SEC_RELOC) == 0
5031 || isec->reloc_count == 0)
5034 trampoff = (isec->size + 3) & (bfd_vma) -4;
5035 /* Space for a branch around any trampolines. */
5038 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5040 /* Get a copy of the native relocations. */
5041 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5042 link_info->keep_memory);
5043 if (internal_relocs == NULL)
5046 htab = ppc_elf_hash_table (link_info);
5047 got2 = bfd_get_section_by_name (abfd, ".got2");
5049 irelend = internal_relocs + isec->reloc_count;
5050 for (irel = internal_relocs; irel < irelend; irel++)
5052 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5053 bfd_vma symaddr, reladdr, toff, roff;
5055 struct one_fixup *f;
5056 size_t insn_offset = 0;
5057 bfd_vma max_branch_offset, val;
5060 unsigned char sym_type;
5065 case R_PPC_LOCAL24PC:
5066 case R_PPC_PLTREL24:
5067 max_branch_offset = 1 << 25;
5071 case R_PPC_REL14_BRTAKEN:
5072 case R_PPC_REL14_BRNTAKEN:
5073 max_branch_offset = 1 << 15;
5080 /* Get the value of the symbol referred to by the reloc. */
5081 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5083 /* A local symbol. */
5084 Elf_Internal_Sym *isym;
5086 /* Read this BFD's local symbols. */
5087 if (isymbuf == NULL)
5089 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5090 if (isymbuf == NULL)
5091 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5092 symtab_hdr->sh_info, 0,
5097 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5098 if (isym->st_shndx == SHN_UNDEF)
5099 continue; /* We can't do anything with undefined symbols. */
5100 else if (isym->st_shndx == SHN_ABS)
5101 tsec = bfd_abs_section_ptr;
5102 else if (isym->st_shndx == SHN_COMMON)
5103 tsec = bfd_com_section_ptr;
5105 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5107 toff = isym->st_value;
5108 sym_type = ELF_ST_TYPE (isym->st_info);
5112 /* Global symbol handling. */
5114 struct elf_link_hash_entry *h;
5116 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5117 h = elf_sym_hashes (abfd)[indx];
5119 while (h->root.type == bfd_link_hash_indirect
5120 || h->root.type == bfd_link_hash_warning)
5121 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5125 if (r_type == R_PPC_PLTREL24
5126 && htab->plt != NULL)
5128 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5132 if (htab->plt_type == PLT_NEW)
5135 toff = ent->glink_offset;
5140 toff = ent->plt.offset;
5146 else if (h->root.type == bfd_link_hash_defined
5147 || h->root.type == bfd_link_hash_defweak)
5149 tsec = h->root.u.def.section;
5150 toff = h->root.u.def.value;
5158 /* If the branch and target are in the same section, you have
5159 no hope of adding stubs. We'll error out later should the
5164 /* There probably isn't any reason to handle symbols in
5165 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5166 attribute for a code section, and we are only looking at
5167 branches. However, implement it correctly here as a
5168 reference for other target relax_section functions. */
5169 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5171 /* At this stage in linking, no SEC_MERGE symbol has been
5172 adjusted, so all references to such symbols need to be
5173 passed through _bfd_merged_section_offset. (Later, in
5174 relocate_section, all SEC_MERGE symbols *except* for
5175 section symbols have been adjusted.)
5177 gas may reduce relocations against symbols in SEC_MERGE
5178 sections to a relocation against the section symbol when
5179 the original addend was zero. When the reloc is against
5180 a section symbol we should include the addend in the
5181 offset passed to _bfd_merged_section_offset, since the
5182 location of interest is the original symbol. On the
5183 other hand, an access to "sym+addend" where "sym" is not
5184 a section symbol should not include the addend; Such an
5185 access is presumed to be an offset from "sym"; The
5186 location of interest is just "sym". */
5187 if (sym_type == STT_SECTION)
5188 toff += irel->r_addend;
5190 toff = _bfd_merged_section_offset (abfd, &tsec,
5191 elf_section_data (tsec)->sec_info,
5194 if (sym_type != STT_SECTION)
5195 toff += irel->r_addend;
5197 /* PLTREL24 addends are special. */
5198 else if (r_type != R_PPC_PLTREL24)
5199 toff += irel->r_addend;
5201 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5203 roff = irel->r_offset;
5204 reladdr = isec->output_section->vma + isec->output_offset + roff;
5206 /* If the branch is in range, no need to do anything. */
5207 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5210 /* Look for an existing fixup to this address. */
5211 for (f = fixups; f ; f = f->next)
5212 if (f->tsec == tsec && f->toff == toff)
5218 unsigned long stub_rtype;
5220 val = trampoff - roff;
5221 if (val >= max_branch_offset)
5222 /* Oh dear, we can't reach a trampoline. Don't try to add
5223 one. We'll report an error later. */
5226 if (link_info->shared)
5228 size = 4 * ARRAY_SIZE (shared_stub_entry);
5230 stub_rtype = R_PPC_RELAX32PC;
5234 size = 4 * ARRAY_SIZE (stub_entry);
5236 stub_rtype = R_PPC_RELAX32;
5239 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5240 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5242 if (tsec == htab->plt
5243 || tsec == htab->glink)
5244 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5246 /* Hijack the old relocation. Since we need two
5247 relocations for this use a "composite" reloc. */
5248 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5250 irel->r_offset = trampoff + insn_offset;
5252 /* Record the fixup so we don't do it again this section. */
5253 f = bfd_malloc (sizeof (*f));
5257 f->trampoff = trampoff;
5264 val = f->trampoff - roff;
5265 if (val >= max_branch_offset)
5268 /* Nop out the reloc, since we're finalizing things here. */
5269 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5272 /* Get the section contents. */
5273 if (contents == NULL)
5275 /* Get cached copy if it exists. */
5276 if (elf_section_data (isec)->this_hdr.contents != NULL)
5277 contents = elf_section_data (isec)->this_hdr.contents;
5280 /* Go get them off disk. */
5281 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5286 /* Fix up the existing branch to hit the trampoline. */
5287 hit_addr = contents + roff;
5291 case R_PPC_LOCAL24PC:
5292 case R_PPC_PLTREL24:
5293 t0 = bfd_get_32 (abfd, hit_addr);
5295 t0 |= val & 0x3fffffc;
5296 bfd_put_32 (abfd, t0, hit_addr);
5300 case R_PPC_REL14_BRTAKEN:
5301 case R_PPC_REL14_BRNTAKEN:
5302 t0 = bfd_get_32 (abfd, hit_addr);
5305 bfd_put_32 (abfd, t0, hit_addr);
5310 /* Write out the trampolines. */
5311 changed = fixups != NULL;
5321 struct one_fixup *f = fixups;
5322 fixups = fixups->next;
5327 contents = bfd_realloc (contents, trampoff);
5328 if (contents == NULL)
5331 isec->size = (isec->size + 3) & (bfd_vma) -4;
5332 /* Branch around the trampolines. */
5333 val = trampoff - isec->size + 0x48000000;
5334 dest = contents + isec->size;
5335 isec->size = trampoff;
5336 bfd_put_32 (abfd, val, dest);
5339 if (link_info->shared)
5341 stub = shared_stub_entry;
5342 size = ARRAY_SIZE (shared_stub_entry);
5347 size = ARRAY_SIZE (stub_entry);
5351 while (dest < contents + trampoff)
5353 bfd_put_32 (abfd, stub[i], dest);
5359 BFD_ASSERT (i == 0);
5363 && symtab_hdr->contents != (unsigned char *) isymbuf)
5365 if (! link_info->keep_memory)
5369 /* Cache the symbols for elf_link_input_bfd. */
5370 symtab_hdr->contents = (unsigned char *) isymbuf;
5374 if (contents != NULL
5375 && elf_section_data (isec)->this_hdr.contents != contents)
5377 if (!changed && !link_info->keep_memory)
5381 /* Cache the section contents for elf_link_input_bfd. */
5382 elf_section_data (isec)->this_hdr.contents = contents;
5386 if (elf_section_data (isec)->relocs != internal_relocs)
5389 free (internal_relocs);
5391 elf_section_data (isec)->relocs = internal_relocs;
5398 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5400 if (contents != NULL
5401 && elf_section_data (isec)->this_hdr.contents != contents)
5403 if (internal_relocs != NULL
5404 && elf_section_data (isec)->relocs != internal_relocs)
5405 free (internal_relocs);
5409 /* What to do when ld finds relocations against symbols defined in
5410 discarded sections. */
5413 ppc_elf_action_discarded (asection *sec)
5415 if (strcmp (".fixup", sec->name) == 0)
5418 if (strcmp (".got2", sec->name) == 0)
5421 return _bfd_elf_default_action_discarded (sec);
5424 /* Fill in the address for a pointer generated in a linker section. */
5427 elf_finish_pointer_linker_section (bfd *input_bfd,
5428 elf_linker_section_t *lsect,
5429 struct elf_link_hash_entry *h,
5431 const Elf_Internal_Rela *rel)
5433 elf_linker_section_pointers_t *linker_section_ptr;
5435 BFD_ASSERT (lsect != NULL);
5439 /* Handle global symbol. */
5440 struct ppc_elf_link_hash_entry *eh;
5442 eh = (struct ppc_elf_link_hash_entry *) h;
5443 BFD_ASSERT (eh->elf.def_regular);
5444 linker_section_ptr = eh->linker_section_pointer;
5448 /* Handle local symbol. */
5449 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5451 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5452 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5455 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5458 BFD_ASSERT (linker_section_ptr != NULL);
5460 /* Offset will always be a multiple of four, so use the bottom bit
5461 as a "written" flag. */
5462 if ((linker_section_ptr->offset & 1) == 0)
5464 bfd_put_32 (lsect->section->owner,
5465 relocation + linker_section_ptr->addend,
5466 lsect->section->contents + linker_section_ptr->offset);
5467 linker_section_ptr->offset += 1;
5470 relocation = (lsect->section->output_offset
5471 + linker_section_ptr->offset - 1
5476 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5477 lsect->name, (long) relocation, (long) relocation);
5480 /* Subtract out the addend, because it will get added back in by the normal
5482 return relocation - linker_section_ptr->addend;
5485 /* The RELOCATE_SECTION function is called by the ELF backend linker
5486 to handle the relocations for a section.
5488 The relocs are always passed as Rela structures; if the section
5489 actually uses Rel structures, the r_addend field will always be
5492 This function is responsible for adjust the section contents as
5493 necessary, and (if using Rela relocs and generating a
5494 relocatable output file) adjusting the reloc addend as
5497 This function does not have to worry about setting the reloc
5498 address or the reloc symbol index.
5500 LOCAL_SYMS is a pointer to the swapped in local symbols.
5502 LOCAL_SECTIONS is an array giving the section in the input file
5503 corresponding to the st_shndx field of each local symbol.
5505 The global hash table entry for the global symbols can be found
5506 via elf_sym_hashes (input_bfd).
5508 When generating relocatable output, this function must handle
5509 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5510 going to be the section symbol corresponding to the output
5511 section, which means that the addend must be adjusted
5515 ppc_elf_relocate_section (bfd *output_bfd,
5516 struct bfd_link_info *info,
5518 asection *input_section,
5520 Elf_Internal_Rela *relocs,
5521 Elf_Internal_Sym *local_syms,
5522 asection **local_sections)
5524 Elf_Internal_Shdr *symtab_hdr;
5525 struct elf_link_hash_entry **sym_hashes;
5526 struct ppc_elf_link_hash_table *htab;
5527 Elf_Internal_Rela *rel;
5528 Elf_Internal_Rela *relend;
5529 Elf_Internal_Rela outrel;
5531 asection *got2, *sreloc = NULL;
5532 bfd_vma *local_got_offsets;
5533 bfd_boolean ret = TRUE;
5536 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5537 "%ld relocations%s",
5538 input_bfd, input_section,
5539 (long) input_section->reloc_count,
5540 (info->relocatable) ? " (relocatable)" : "");
5543 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5545 if (info->relocatable)
5551 relend = relocs + input_section->reloc_count;
5552 for (; rel < relend; rel++)
5554 enum elf_ppc_reloc_type r_type;
5556 r_type = ELF32_R_TYPE (rel->r_info);
5557 if (r_type == R_PPC_PLTREL24
5558 && rel->r_addend >= 32768)
5560 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5561 addend specifies the GOT pointer offset within .got2. */
5562 rel->r_addend += got2->output_offset;
5568 /* Initialize howto table if not already done. */
5569 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5570 ppc_elf_howto_init ();
5572 htab = ppc_elf_hash_table (info);
5573 local_got_offsets = elf_local_got_offsets (input_bfd);
5574 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5575 sym_hashes = elf_sym_hashes (input_bfd);
5577 relend = relocs + input_section->reloc_count;
5578 for (; rel < relend; rel++)
5580 enum elf_ppc_reloc_type r_type;
5582 bfd_reloc_status_type r;
5583 Elf_Internal_Sym *sym;
5585 struct elf_link_hash_entry *h;
5586 const char *sym_name;
5587 reloc_howto_type *howto;
5588 unsigned long r_symndx;
5590 bfd_vma branch_bit, insn, from;
5591 bfd_boolean unresolved_reloc;
5593 unsigned int tls_type, tls_mask, tls_gd;
5595 r_type = ELF32_R_TYPE (rel->r_info);
5599 unresolved_reloc = FALSE;
5601 r_symndx = ELF32_R_SYM (rel->r_info);
5603 if (r_symndx < symtab_hdr->sh_info)
5605 sym = local_syms + r_symndx;
5606 sec = local_sections[r_symndx];
5607 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5609 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5613 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5614 r_symndx, symtab_hdr, sym_hashes,
5616 unresolved_reloc, warned);
5618 sym_name = h->root.root.string;
5621 /* TLS optimizations. Replace instruction sequences and relocs
5622 based on information we collected in tls_optimize. We edit
5623 RELOCS so that --emit-relocs will output something sensible
5624 for the final instruction stream. */
5627 if (IS_PPC_TLS_RELOC (r_type))
5630 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5631 else if (local_got_offsets != NULL)
5634 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5635 tls_mask = lgot_masks[r_symndx];
5639 /* Ensure reloc mapping code below stays sane. */
5640 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5641 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5642 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5643 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5644 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5645 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5646 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5647 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5654 case R_PPC_GOT_TPREL16:
5655 case R_PPC_GOT_TPREL16_LO:
5657 && (tls_mask & TLS_TPREL) == 0)
5660 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5662 insn |= 0x3c020000; /* addis 0,2,0 */
5663 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5664 r_type = R_PPC_TPREL16_HA;
5665 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5671 && (tls_mask & TLS_TPREL) == 0)
5674 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5675 if ((insn & ((31 << 26) | (31 << 11)))
5676 == ((31 << 26) | (2 << 11)))
5677 rtra = insn & ((1 << 26) - (1 << 16));
5678 else if ((insn & ((31 << 26) | (31 << 16)))
5679 == ((31 << 26) | (2 << 16)))
5680 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5683 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5686 else if ((insn & (31 << 1)) == 23 << 1
5687 && ((insn & (31 << 6)) < 14 << 6
5688 || ((insn & (31 << 6)) >= 16 << 6
5689 && (insn & (31 << 6)) < 24 << 6)))
5690 /* load and store indexed -> dform. */
5691 insn = (32 | ((insn >> 6) & 31)) << 26;
5692 else if ((insn & (31 << 1)) == 21 << 1
5693 && (insn & (0x1a << 6)) == 0)
5694 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5695 insn = (((58 | ((insn >> 6) & 4)) << 26)
5696 | ((insn >> 6) & 1));
5697 else if ((insn & (31 << 1)) == 21 << 1
5698 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5700 insn = (58 << 26) | 2;
5704 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5705 r_type = R_PPC_TPREL16_LO;
5706 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5707 /* Was PPC_TLS which sits on insn boundary, now
5708 PPC_TPREL16_LO which is at insn+2. */
5713 case R_PPC_GOT_TLSGD16_HI:
5714 case R_PPC_GOT_TLSGD16_HA:
5715 tls_gd = TLS_TPRELGD;
5716 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5720 case R_PPC_GOT_TLSLD16_HI:
5721 case R_PPC_GOT_TLSLD16_HA:
5722 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5725 if ((tls_mask & tls_gd) != 0)
5726 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5727 + R_PPC_GOT_TPREL16);
5730 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5732 r_type = R_PPC_NONE;
5734 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5738 case R_PPC_GOT_TLSGD16:
5739 case R_PPC_GOT_TLSGD16_LO:
5740 tls_gd = TLS_TPRELGD;
5741 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5742 goto tls_get_addr_check;
5745 case R_PPC_GOT_TLSLD16:
5746 case R_PPC_GOT_TLSLD16_LO:
5747 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5750 if (rel + 1 < relend)
5752 enum elf_ppc_reloc_type r_type2;
5753 unsigned long r_symndx2;
5754 struct elf_link_hash_entry *h2;
5755 bfd_vma insn1, insn2;
5758 /* The next instruction should be a call to
5759 __tls_get_addr. Peek at the reloc to be sure. */
5760 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5761 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5762 if (r_symndx2 < symtab_hdr->sh_info
5763 || (r_type2 != R_PPC_REL14
5764 && r_type2 != R_PPC_REL14_BRTAKEN
5765 && r_type2 != R_PPC_REL14_BRNTAKEN
5766 && r_type2 != R_PPC_REL24
5767 && r_type2 != R_PPC_PLTREL24))
5770 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5771 while (h2->root.type == bfd_link_hash_indirect
5772 || h2->root.type == bfd_link_hash_warning)
5773 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5774 if (h2 == NULL || h2 != htab->tls_get_addr)
5777 /* OK, it checks out. Replace the call. */
5778 offset = rel[1].r_offset;
5779 insn1 = bfd_get_32 (output_bfd,
5780 contents + rel->r_offset - 2);
5781 if ((tls_mask & tls_gd) != 0)
5784 insn1 &= (1 << 26) - 1;
5785 insn1 |= 32 << 26; /* lwz */
5786 insn2 = 0x7c631214; /* add 3,3,2 */
5787 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5788 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5789 + R_PPC_GOT_TPREL16);
5790 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5795 insn1 = 0x3c620000; /* addis 3,2,0 */
5796 insn2 = 0x38630000; /* addi 3,3,0 */
5799 /* Was an LD reloc. */
5801 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5802 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5804 r_type = R_PPC_TPREL16_HA;
5805 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5806 rel[1].r_info = ELF32_R_INFO (r_symndx,
5808 rel[1].r_offset += 2;
5810 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5811 bfd_put_32 (output_bfd, insn2, contents + offset);
5814 /* We changed the symbol on an LD reloc. Start over
5815 in order to get h, sym, sec etc. right. */
5824 /* Handle other relocations that tweak non-addend part of insn. */
5831 /* Branch taken prediction relocations. */
5832 case R_PPC_ADDR14_BRTAKEN:
5833 case R_PPC_REL14_BRTAKEN:
5834 branch_bit = BRANCH_PREDICT_BIT;
5837 /* Branch not taken prediction relocations. */
5838 case R_PPC_ADDR14_BRNTAKEN:
5839 case R_PPC_REL14_BRNTAKEN:
5840 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5841 insn &= ~BRANCH_PREDICT_BIT;
5844 from = (rel->r_offset
5845 + input_section->output_offset
5846 + input_section->output_section->vma);
5848 /* Invert 'y' bit if not the default. */
5849 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5850 insn ^= BRANCH_PREDICT_BIT;
5852 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5856 addend = rel->r_addend;
5859 if (r_type < R_PPC_max)
5860 howto = ppc_elf_howto_table[r_type];
5864 (*_bfd_error_handler)
5865 (_("%B: unknown relocation type %d for symbol %s"),
5866 input_bfd, (int) r_type, sym_name);
5868 bfd_set_error (bfd_error_bad_value);
5874 case R_PPC_EMB_MRKREF:
5875 case R_PPC_GNU_VTINHERIT:
5876 case R_PPC_GNU_VTENTRY:
5879 /* GOT16 relocations. Like an ADDR16 using the symbol's
5880 address in the GOT as relocation value instead of the
5881 symbol's value itself. Also, create a GOT entry for the
5882 symbol and put the symbol value there. */
5883 case R_PPC_GOT_TLSGD16:
5884 case R_PPC_GOT_TLSGD16_LO:
5885 case R_PPC_GOT_TLSGD16_HI:
5886 case R_PPC_GOT_TLSGD16_HA:
5887 tls_type = TLS_TLS | TLS_GD;
5890 case R_PPC_GOT_TLSLD16:
5891 case R_PPC_GOT_TLSLD16_LO:
5892 case R_PPC_GOT_TLSLD16_HI:
5893 case R_PPC_GOT_TLSLD16_HA:
5894 tls_type = TLS_TLS | TLS_LD;
5897 case R_PPC_GOT_TPREL16:
5898 case R_PPC_GOT_TPREL16_LO:
5899 case R_PPC_GOT_TPREL16_HI:
5900 case R_PPC_GOT_TPREL16_HA:
5901 tls_type = TLS_TLS | TLS_TPREL;
5904 case R_PPC_GOT_DTPREL16:
5905 case R_PPC_GOT_DTPREL16_LO:
5906 case R_PPC_GOT_DTPREL16_HI:
5907 case R_PPC_GOT_DTPREL16_HA:
5908 tls_type = TLS_TLS | TLS_DTPREL;
5912 case R_PPC_GOT16_LO:
5913 case R_PPC_GOT16_HI:
5914 case R_PPC_GOT16_HA:
5917 /* Relocation is to the entry for this symbol in the global
5923 if (htab->got == NULL)
5927 if (tls_type == (TLS_TLS | TLS_LD)
5929 || !h->def_dynamic))
5930 offp = &htab->tlsld_got.offset;
5934 dyn = htab->elf.dynamic_sections_created;
5935 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5937 && SYMBOL_REFERENCES_LOCAL (info, h)))
5938 /* This is actually a static link, or it is a
5939 -Bsymbolic link and the symbol is defined
5940 locally, or the symbol was forced to be local
5941 because of a version file. */
5946 unresolved_reloc = FALSE;
5948 offp = &h->got.offset;
5952 if (local_got_offsets == NULL)
5954 offp = &local_got_offsets[r_symndx];
5957 /* The offset must always be a multiple of 4. We use the
5958 least significant bit to record whether we have already
5959 processed this entry. */
5965 unsigned int tls_m = (tls_mask
5966 & (TLS_LD | TLS_GD | TLS_DTPREL
5967 | TLS_TPREL | TLS_TPRELGD));
5969 if (offp == &htab->tlsld_got.offset)
5975 /* We might have multiple got entries for this sym.
5976 Initialize them all. */
5981 if ((tls_m & TLS_LD) != 0)
5983 tls_ty = TLS_TLS | TLS_LD;
5986 else if ((tls_m & TLS_GD) != 0)
5988 tls_ty = TLS_TLS | TLS_GD;
5991 else if ((tls_m & TLS_DTPREL) != 0)
5993 tls_ty = TLS_TLS | TLS_DTPREL;
5994 tls_m &= ~TLS_DTPREL;
5996 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5998 tls_ty = TLS_TLS | TLS_TPREL;
6002 /* Generate relocs for the dynamic linker. */
6003 if ((info->shared || indx != 0)
6005 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6006 || h->root.type != bfd_link_hash_undefweak))
6008 outrel.r_offset = (htab->got->output_section->vma
6009 + htab->got->output_offset
6011 outrel.r_addend = 0;
6012 if (tls_ty & (TLS_LD | TLS_GD))
6014 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6015 if (tls_ty == (TLS_TLS | TLS_GD))
6017 loc = htab->relgot->contents;
6018 loc += (htab->relgot->reloc_count++
6019 * sizeof (Elf32_External_Rela));
6020 bfd_elf32_swap_reloca_out (output_bfd,
6022 outrel.r_offset += 4;
6024 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6027 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6028 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6029 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6030 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6032 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6034 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6037 outrel.r_addend += relocation;
6038 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6039 outrel.r_addend -= htab->elf.tls_sec->vma;
6041 loc = htab->relgot->contents;
6042 loc += (htab->relgot->reloc_count++
6043 * sizeof (Elf32_External_Rela));
6044 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6047 /* Init the .got section contents if we're not
6048 emitting a reloc. */
6051 bfd_vma value = relocation;
6053 if (tls_ty == (TLS_TLS | TLS_LD))
6055 else if (tls_ty != 0)
6057 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6058 if (tls_ty == (TLS_TLS | TLS_TPREL))
6059 value += DTP_OFFSET - TP_OFFSET;
6061 if (tls_ty == (TLS_TLS | TLS_GD))
6063 bfd_put_32 (output_bfd, value,
6064 htab->got->contents + off + 4);
6068 bfd_put_32 (output_bfd, value,
6069 htab->got->contents + off);
6073 if (tls_ty & (TLS_LD | TLS_GD))
6082 if (off >= (bfd_vma) -2)
6085 if ((tls_type & TLS_TLS) != 0)
6087 if (tls_type != (TLS_TLS | TLS_LD))
6089 if ((tls_mask & TLS_LD) != 0
6091 || !h->def_dynamic))
6093 if (tls_type != (TLS_TLS | TLS_GD))
6095 if ((tls_mask & TLS_GD) != 0)
6097 if (tls_type != (TLS_TLS | TLS_DTPREL))
6099 if ((tls_mask & TLS_DTPREL) != 0)
6106 relocation = htab->got->output_offset + off;
6107 relocation -= htab->elf.hgot->root.u.def.value;
6109 /* Addends on got relocations don't make much sense.
6110 x+off@got is actually x@got+off, and since the got is
6111 generated by a hash table traversal, the value in the
6112 got at entry m+n bears little relation to the entry m. */
6114 (*_bfd_error_handler)
6115 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6118 (long) rel->r_offset,
6124 /* Relocations that need no special processing. */
6125 case R_PPC_LOCAL24PC:
6126 /* It makes no sense to point a local relocation
6127 at a symbol not in this object. */
6128 if (unresolved_reloc)
6130 if (! (*info->callbacks->undefined_symbol) (info,
6131 h->root.root.string,
6141 case R_PPC_DTPREL16:
6142 case R_PPC_DTPREL16_LO:
6143 case R_PPC_DTPREL16_HI:
6144 case R_PPC_DTPREL16_HA:
6145 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6148 /* Relocations that may need to be propagated if this is a shared
6151 case R_PPC_TPREL16_LO:
6152 case R_PPC_TPREL16_HI:
6153 case R_PPC_TPREL16_HA:
6154 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6155 /* The TPREL16 relocs shouldn't really be used in shared
6156 libs as they will result in DT_TEXTREL being set, but
6157 support them anyway. */
6161 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6164 case R_PPC_DTPREL32:
6165 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6168 case R_PPC_DTPMOD32:
6174 case R_PPC_REL16_LO:
6175 case R_PPC_REL16_HI:
6176 case R_PPC_REL16_HA:
6182 case R_PPC_REL14_BRTAKEN:
6183 case R_PPC_REL14_BRNTAKEN:
6184 /* If these relocations are not to a named symbol, they can be
6185 handled right here, no need to bother the dynamic linker. */
6186 if (SYMBOL_REFERENCES_LOCAL (info, h)
6187 || h == htab->elf.hgot)
6191 /* Relocations that always need to be propagated if this is a shared
6196 case R_PPC_ADDR16_LO:
6197 case R_PPC_ADDR16_HI:
6198 case R_PPC_ADDR16_HA:
6200 case R_PPC_ADDR14_BRTAKEN:
6201 case R_PPC_ADDR14_BRNTAKEN:
6204 /* r_symndx will be zero only for relocs against symbols
6205 from removed linkonce sections, or sections discarded by
6212 if ((input_section->flags & SEC_ALLOC) == 0)
6218 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6219 || h->root.type != bfd_link_hash_undefweak)
6220 && (MUST_BE_DYN_RELOC (r_type)
6221 || !SYMBOL_CALLS_LOCAL (info, h)))
6222 || (ELIMINATE_COPY_RELOCS
6228 && !h->def_regular))
6233 fprintf (stderr, "ppc_elf_relocate_section needs to "
6234 "create relocation for %s\n",
6235 (h && h->root.root.string
6236 ? h->root.root.string : "<unknown>"));
6239 /* When generating a shared object, these relocations
6240 are copied into the output file to be resolved at run
6246 name = (bfd_elf_string_from_elf_section
6248 elf_elfheader (input_bfd)->e_shstrndx,
6249 elf_section_data (input_section)->rel_hdr.sh_name));
6253 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6254 && strcmp (bfd_get_section_name (input_bfd,
6258 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6259 BFD_ASSERT (sreloc != NULL);
6265 _bfd_elf_section_offset (output_bfd, info, input_section,
6267 if (outrel.r_offset == (bfd_vma) -1
6268 || outrel.r_offset == (bfd_vma) -2)
6269 skip = (int) outrel.r_offset;
6270 outrel.r_offset += (input_section->output_section->vma
6271 + input_section->output_offset);
6274 memset (&outrel, 0, sizeof outrel);
6275 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6277 unresolved_reloc = FALSE;
6278 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6279 outrel.r_addend = rel->r_addend;
6283 outrel.r_addend = relocation + rel->r_addend;
6285 if (r_type == R_PPC_ADDR32)
6286 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6291 if (bfd_is_abs_section (sec))
6293 else if (sec == NULL || sec->owner == NULL)
6295 bfd_set_error (bfd_error_bad_value);
6302 /* We are turning this relocation into one
6303 against a section symbol. It would be
6304 proper to subtract the symbol's value,
6305 osec->vma, from the emitted reloc addend,
6306 but ld.so expects buggy relocs. */
6307 osec = sec->output_section;
6308 indx = elf_section_data (osec)->dynindx;
6309 BFD_ASSERT (indx > 0);
6312 printf ("indx=%d section=%s flags=%08x name=%s\n",
6313 indx, osec->name, osec->flags,
6314 h->root.root.string);
6318 outrel.r_info = ELF32_R_INFO (indx, r_type);
6322 loc = sreloc->contents;
6323 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6324 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6329 /* This reloc will be computed at runtime. We clear the memory
6330 so that it contains predictable value. */
6332 && ((input_section->flags & SEC_ALLOC) != 0
6333 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6335 relocation = howto->pc_relative ? outrel.r_offset : 0;
6342 case R_PPC_RELAX32PC_PLT:
6343 case R_PPC_RELAX32_PLT:
6345 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6347 if (htab->plt_type == PLT_NEW)
6348 relocation = (htab->glink->output_section->vma
6349 + htab->glink->output_offset
6350 + ent->glink_offset);
6352 relocation = (htab->plt->output_section->vma
6353 + htab->plt->output_offset
6357 if (r_type == R_PPC_RELAX32_PLT)
6361 case R_PPC_RELAX32PC:
6362 relocation -= (input_section->output_section->vma
6363 + input_section->output_offset
6364 + rel->r_offset - 4);
6373 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6374 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6376 /* We're clearing the bits for R_PPC_ADDR16_HA
6377 and R_PPC_ADDR16_LO here. */
6381 /* t0 is HA, t1 is LO */
6382 relocation += addend;
6383 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6384 t1 |= relocation & 0xffff;
6386 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6387 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6391 /* Indirect .sdata relocation. */
6392 case R_PPC_EMB_SDAI16:
6393 BFD_ASSERT (htab->sdata[0].section != NULL);
6395 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6396 h, relocation, rel);
6399 /* Indirect .sdata2 relocation. */
6400 case R_PPC_EMB_SDA2I16:
6401 BFD_ASSERT (htab->sdata[1].section != NULL);
6403 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6404 h, relocation, rel);
6407 /* Handle the TOC16 reloc. We want to use the offset within the .got
6408 section, not the actual VMA. This is appropriate when generating
6409 an embedded ELF object, for which the .got section acts like the
6410 AIX .toc section. */
6411 case R_PPC_TOC16: /* phony GOT16 relocations */
6412 BFD_ASSERT (sec != NULL);
6413 BFD_ASSERT (bfd_is_und_section (sec)
6414 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6415 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6417 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6420 case R_PPC_PLTREL24:
6421 /* Relocation is to the entry for this symbol in the
6422 procedure linkage table. */
6424 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6428 || htab->plt == NULL)
6430 /* We didn't make a PLT entry for this symbol. This
6431 happens when statically linking PIC code, or when
6432 using -Bsymbolic. */
6436 unresolved_reloc = FALSE;
6437 if (htab->plt_type == PLT_NEW)
6438 relocation = (htab->glink->output_section->vma
6439 + htab->glink->output_offset
6440 + ent->glink_offset);
6442 relocation = (htab->plt->output_section->vma
6443 + htab->plt->output_offset
6448 /* Relocate against _SDA_BASE_. */
6449 case R_PPC_SDAREL16:
6452 struct elf_link_hash_entry *sh;
6454 BFD_ASSERT (sec != NULL);
6455 name = bfd_get_section_name (abfd, sec->output_section);
6456 if (! ((strncmp (name, ".sdata", 6) == 0
6457 && (name[6] == 0 || name[6] == '.'))
6458 || (strncmp (name, ".sbss", 5) == 0
6459 && (name[5] == 0 || name[5] == '.'))))
6461 (*_bfd_error_handler)
6462 (_("%B: the target (%s) of a %s relocation is "
6463 "in the wrong output section (%s)"),
6469 sh = htab->sdata[0].sym;
6470 addend -= (sh->root.u.def.value
6471 + sh->root.u.def.section->output_offset
6472 + sh->root.u.def.section->output_section->vma);
6476 /* Relocate against _SDA2_BASE_. */
6477 case R_PPC_EMB_SDA2REL:
6480 struct elf_link_hash_entry *sh;
6482 BFD_ASSERT (sec != NULL);
6483 name = bfd_get_section_name (abfd, sec->output_section);
6484 if (! (strncmp (name, ".sdata2", 7) == 0
6485 || strncmp (name, ".sbss2", 6) == 0))
6487 (*_bfd_error_handler)
6488 (_("%B: the target (%s) of a %s relocation is "
6489 "in the wrong output section (%s)"),
6495 bfd_set_error (bfd_error_bad_value);
6499 sh = htab->sdata[1].sym;
6500 addend -= (sh->root.u.def.value
6501 + sh->root.u.def.section->output_offset
6502 + sh->root.u.def.section->output_section->vma);
6506 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6507 case R_PPC_EMB_SDA21:
6508 case R_PPC_EMB_RELSDA:
6512 struct elf_link_hash_entry *sh;
6514 BFD_ASSERT (sec != NULL);
6515 name = bfd_get_section_name (abfd, sec->output_section);
6516 if (((strncmp (name, ".sdata", 6) == 0
6517 && (name[6] == 0 || name[6] == '.'))
6518 || (strncmp (name, ".sbss", 5) == 0
6519 && (name[5] == 0 || name[5] == '.'))))
6522 sh = htab->sdata[0].sym;
6523 addend -= (sh->root.u.def.value
6524 + sh->root.u.def.section->output_offset
6525 + sh->root.u.def.section->output_section->vma);
6528 else if (strncmp (name, ".sdata2", 7) == 0
6529 || strncmp (name, ".sbss2", 6) == 0)
6532 sh = htab->sdata[1].sym;
6533 addend -= (sh->root.u.def.value
6534 + sh->root.u.def.section->output_offset
6535 + sh->root.u.def.section->output_section->vma);
6538 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6539 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6546 (*_bfd_error_handler)
6547 (_("%B: the target (%s) of a %s relocation is "
6548 "in the wrong output section (%s)"),
6554 bfd_set_error (bfd_error_bad_value);
6559 if (r_type == R_PPC_EMB_SDA21)
6560 { /* fill in register field */
6561 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6562 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6563 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6568 /* Relocate against the beginning of the section. */
6570 case R_PPC_SECTOFF_LO:
6571 case R_PPC_SECTOFF_HI:
6572 case R_PPC_SECTOFF_HA:
6573 BFD_ASSERT (sec != NULL);
6574 addend -= sec->output_section->vma;
6577 /* Negative relocations. */
6578 case R_PPC_EMB_NADDR32:
6579 case R_PPC_EMB_NADDR16:
6580 case R_PPC_EMB_NADDR16_LO:
6581 case R_PPC_EMB_NADDR16_HI:
6582 case R_PPC_EMB_NADDR16_HA:
6583 addend -= 2 * relocation;
6587 case R_PPC_GLOB_DAT:
6588 case R_PPC_JMP_SLOT:
6589 case R_PPC_RELATIVE:
6591 case R_PPC_PLTREL32:
6592 case R_PPC_PLT16_LO:
6593 case R_PPC_PLT16_HI:
6594 case R_PPC_PLT16_HA:
6596 case R_PPC_EMB_RELSEC16:
6597 case R_PPC_EMB_RELST_LO:
6598 case R_PPC_EMB_RELST_HI:
6599 case R_PPC_EMB_RELST_HA:
6600 case R_PPC_EMB_BIT_FLD:
6601 (*_bfd_error_handler)
6602 (_("%B: relocation %s is not yet supported for symbol %s."),
6607 bfd_set_error (bfd_error_invalid_operation);
6612 /* Do any further special processing. */
6618 case R_PPC_ADDR16_HA:
6619 case R_PPC_REL16_HA:
6620 case R_PPC_GOT16_HA:
6621 case R_PPC_PLT16_HA:
6622 case R_PPC_SECTOFF_HA:
6623 case R_PPC_TPREL16_HA:
6624 case R_PPC_DTPREL16_HA:
6625 case R_PPC_GOT_TLSGD16_HA:
6626 case R_PPC_GOT_TLSLD16_HA:
6627 case R_PPC_GOT_TPREL16_HA:
6628 case R_PPC_GOT_DTPREL16_HA:
6629 case R_PPC_EMB_NADDR16_HA:
6630 case R_PPC_EMB_RELST_HA:
6631 /* It's just possible that this symbol is a weak symbol
6632 that's not actually defined anywhere. In that case,
6633 'sec' would be NULL, and we should leave the symbol
6634 alone (it will be set to zero elsewhere in the link). */
6636 /* Add 0x10000 if sign bit in 0:15 is set.
6637 Bits 0:15 are not used. */
6643 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6644 "offset = %ld, addend = %ld\n",
6649 (long) rel->r_offset,
6653 if (unresolved_reloc
6654 && !((input_section->flags & SEC_DEBUGGING) != 0
6657 (*_bfd_error_handler)
6658 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6661 (long) rel->r_offset,
6667 r = _bfd_final_link_relocate (howto,
6675 if (r != bfd_reloc_ok)
6677 if (r == bfd_reloc_overflow)
6682 && h->root.type == bfd_link_hash_undefweak
6683 && howto->pc_relative)
6685 /* Assume this is a call protected by other code that
6686 detect the symbol is undefined. If this is the case,
6687 we can safely ignore the overflow. If not, the
6688 program is hosed anyway, and a little warning isn't
6694 if (! (*info->callbacks->reloc_overflow) (info,
6695 (h ? &h->root : NULL),
6706 (*_bfd_error_handler)
6707 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6708 input_bfd, input_section,
6709 (long) rel->r_offset, howto->name, sym_name, (int) r);
6716 fprintf (stderr, "\n");
6722 #define PPC_LO(v) ((v) & 0xffff)
6723 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6724 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6726 /* Finish up dynamic symbol handling. We set the contents of various
6727 dynamic sections here. */
6730 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6731 struct bfd_link_info *info,
6732 struct elf_link_hash_entry *h,
6733 Elf_Internal_Sym *sym)
6735 struct ppc_elf_link_hash_table *htab;
6736 struct plt_entry *ent;
6737 bfd_boolean doneone;
6740 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6741 h->root.root.string);
6744 htab = ppc_elf_hash_table (info);
6745 BFD_ASSERT (htab->elf.dynobj != NULL);
6748 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6749 if (ent->plt.offset != (bfd_vma) -1)
6753 Elf_Internal_Rela rela;
6755 bfd_vma reloc_index;
6757 if (htab->plt_type == PLT_NEW)
6758 reloc_index = ent->plt.offset / 4;
6761 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6762 / htab->plt_slot_size);
6763 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6764 && htab->plt_type == PLT_OLD)
6765 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6768 /* This symbol has an entry in the procedure linkage table.
6770 if (htab->plt_type == PLT_VXWORKS)
6773 const bfd_vma *plt_entry;
6775 /* The first three entries in .got.plt are reserved. */
6776 got_offset = (reloc_index + 3) * 4;
6778 /* Use the right PLT. */
6779 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6780 : ppc_elf_vxworks_plt_entry;
6782 /* Fill in the .plt on VxWorks. */
6785 bfd_vma got_offset_hi = (got_offset >> 16)
6786 + ((got_offset & 0x8000) >> 15);
6788 bfd_put_32 (output_bfd,
6789 plt_entry[0] | (got_offset_hi & 0xffff),
6790 htab->plt->contents + ent->plt.offset + 0);
6791 bfd_put_32 (output_bfd,
6792 plt_entry[1] | (got_offset & 0xffff),
6793 htab->plt->contents + ent->plt.offset + 4);
6799 + htab->elf.hgot->root.u.def.value
6800 + htab->elf.hgot->root.u.def.section->output_offset
6801 + htab->elf.hgot->root.u.def.section->output_section->vma);
6802 bfd_vma got_loc_hi = (got_loc >> 16)
6803 + ((got_loc & 0x8000) >> 15);
6805 bfd_put_32 (output_bfd,
6806 plt_entry[0] | (got_loc_hi & 0xffff),
6807 htab->plt->contents + ent->plt.offset + 0);
6808 bfd_put_32 (output_bfd,
6809 plt_entry[1] | (got_loc & 0xffff),
6810 htab->plt->contents + ent->plt.offset + 4);
6813 bfd_put_32 (output_bfd, plt_entry[2],
6814 htab->plt->contents + ent->plt.offset + 8);
6815 bfd_put_32 (output_bfd, plt_entry[3],
6816 htab->plt->contents + ent->plt.offset + 12);
6818 /* This instruction is an immediate load. The value loaded is
6819 the byte offset of the R_PPC_JMP_SLOT relocation from the
6820 start of the .rela.plt section. The value is stored in the
6821 low-order 16 bits of the load instruction. */
6822 /* NOTE: It appears that this is now an index rather than a
6823 prescaled offset. */
6824 bfd_put_32 (output_bfd,
6825 plt_entry[4] | reloc_index,
6826 htab->plt->contents + ent->plt.offset + 16);
6827 /* This instruction is a PC-relative branch whose target is
6828 the start of the PLT section. The address of this branch
6829 instruction is 20 bytes beyond the start of this PLT entry.
6830 The address is encoded in bits 6-29, inclusive. The value
6831 stored is right-shifted by two bits, permitting a 26-bit
6833 bfd_put_32 (output_bfd,
6835 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6836 htab->plt->contents + ent->plt.offset + 20);
6837 bfd_put_32 (output_bfd, plt_entry[6],
6838 htab->plt->contents + ent->plt.offset + 24);
6839 bfd_put_32 (output_bfd, plt_entry[7],
6840 htab->plt->contents + ent->plt.offset + 28);
6842 /* Fill in the GOT entry corresponding to this PLT slot with
6843 the address immediately after the the "bctr" instruction
6844 in this PLT entry. */
6845 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6846 + htab->plt->output_offset
6847 + ent->plt.offset + 16),
6848 htab->sgotplt->contents + got_offset);
6852 /* Fill in a couple of entries in .rela.plt.unloaded. */
6853 loc = htab->srelplt2->contents
6854 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6855 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6856 * sizeof (Elf32_External_Rela));
6858 /* Provide the @ha relocation for the first instruction. */
6859 rela.r_offset = (htab->plt->output_section->vma
6860 + htab->plt->output_offset
6861 + ent->plt.offset + 2);
6862 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6864 rela.r_addend = got_offset;
6865 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6866 loc += sizeof (Elf32_External_Rela);
6868 /* Provide the @l relocation for the second instruction. */
6869 rela.r_offset = (htab->plt->output_section->vma
6870 + htab->plt->output_offset
6871 + ent->plt.offset + 6);
6872 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6874 rela.r_addend = got_offset;
6875 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6876 loc += sizeof (Elf32_External_Rela);
6878 /* Provide a relocation for the GOT entry corresponding to this
6879 PLT slot. Point it at the middle of the .plt entry. */
6880 rela.r_offset = (htab->sgotplt->output_section->vma
6881 + htab->sgotplt->output_offset
6883 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
6885 rela.r_addend = ent->plt.offset + 16;
6886 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6889 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6890 In particular, the offset for the relocation is not the
6891 address of the PLT entry for this function, as specified
6892 by the ABI. Instead, the offset is set to the address of
6893 the GOT slot for this function. See EABI 4.4.4.1. */
6894 rela.r_offset = (htab->sgotplt->output_section->vma
6895 + htab->sgotplt->output_offset
6901 rela.r_offset = (htab->plt->output_section->vma
6902 + htab->plt->output_offset
6904 if (htab->plt_type == PLT_OLD)
6906 /* We don't need to fill in the .plt. The ppc dynamic
6907 linker will fill it in. */
6911 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6912 + htab->glink->output_section->vma
6913 + htab->glink->output_offset);
6914 bfd_put_32 (output_bfd, val,
6915 htab->plt->contents + ent->plt.offset);
6919 /* Fill in the entry in the .rela.plt section. */
6920 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6923 loc = (htab->relplt->contents
6924 + reloc_index * sizeof (Elf32_External_Rela));
6925 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6927 if (!h->def_regular)
6929 /* Mark the symbol as undefined, rather than as defined in
6930 the .plt section. Leave the value alone. */
6931 sym->st_shndx = SHN_UNDEF;
6932 /* If the symbol is weak, we do need to clear the value.
6933 Otherwise, the PLT entry would provide a definition for
6934 the symbol even if the symbol wasn't defined anywhere,
6935 and so the symbol would never be NULL. */
6936 if (!h->ref_regular_nonweak)
6942 if (htab->plt_type == PLT_NEW)
6947 plt = (ent->plt.offset
6948 + htab->plt->output_section->vma
6949 + htab->plt->output_offset);
6950 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6952 if (info->shared || info->pie)
6956 if (ent->addend >= 32768)
6958 + ent->sec->output_section->vma
6959 + ent->sec->output_offset);
6960 else if (htab->elf.hgot != NULL)
6961 got = (htab->elf.hgot->root.u.def.value
6962 + htab->elf.hgot->root.u.def.section->output_section->vma
6963 + htab->elf.hgot->root.u.def.section->output_offset);
6967 if (plt + 0x8000 < 0x10000)
6969 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6971 bfd_put_32 (output_bfd, MTCTR_11, p);
6973 bfd_put_32 (output_bfd, BCTR, p);
6975 bfd_put_32 (output_bfd, NOP, p);
6980 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6982 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6984 bfd_put_32 (output_bfd, MTCTR_11, p);
6986 bfd_put_32 (output_bfd, BCTR, p);
6992 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6994 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6996 bfd_put_32 (output_bfd, MTCTR_11, p);
6998 bfd_put_32 (output_bfd, BCTR, p);
7001 /* We only need one non-PIC glink stub. */
7012 Elf_Internal_Rela rela;
7015 /* This symbols needs a copy reloc. Set it up. */
7018 fprintf (stderr, ", copy");
7021 BFD_ASSERT (h->dynindx != -1);
7023 if (ppc_elf_hash_entry (h)->has_sda_refs)
7027 BFD_ASSERT (s != NULL);
7029 rela.r_offset = (h->root.u.def.value
7030 + h->root.u.def.section->output_section->vma
7031 + h->root.u.def.section->output_offset);
7032 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7034 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7035 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7039 fprintf (stderr, "\n");
7042 /* Mark some specially defined symbols as absolute. */
7043 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7044 || (!htab->is_vxworks
7045 && (h == htab->elf.hgot
7046 || strcmp (h->root.root.string,
7047 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7048 sym->st_shndx = SHN_ABS;
7053 static enum elf_reloc_type_class
7054 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7056 switch (ELF32_R_TYPE (rela->r_info))
7058 case R_PPC_RELATIVE:
7059 return reloc_class_relative;
7062 case R_PPC_JMP_SLOT:
7063 return reloc_class_plt;
7065 return reloc_class_copy;
7067 return reloc_class_normal;
7071 /* Finish up the dynamic sections. */
7074 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7075 struct bfd_link_info *info)
7079 struct ppc_elf_link_hash_table *htab;
7084 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7087 htab = ppc_elf_hash_table (info);
7088 dynobj = elf_hash_table (info)->dynobj;
7089 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7090 if (htab->is_vxworks)
7091 splt = bfd_get_section_by_name (dynobj, ".plt");
7096 if (htab->elf.hgot != NULL)
7097 got = (htab->elf.hgot->root.u.def.value
7098 + htab->elf.hgot->root.u.def.section->output_section->vma
7099 + htab->elf.hgot->root.u.def.section->output_offset);
7101 if (htab->elf.dynamic_sections_created)
7103 Elf32_External_Dyn *dyncon, *dynconend;
7105 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7107 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7108 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7109 for (; dyncon < dynconend; dyncon++)
7111 Elf_Internal_Dyn dyn;
7114 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7119 if (htab->is_vxworks)
7123 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7127 dyn.d_un.d_val = htab->relplt->size;
7132 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7136 dyn.d_un.d_ptr = got;
7140 if (htab->is_vxworks)
7143 dyn.d_un.d_ptr -= htab->relplt->size;
7152 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7156 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7157 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7158 if (htab->got != NULL)
7160 unsigned char *p = htab->got->contents;
7163 p += htab->elf.hgot->root.u.def.value;
7164 if (htab->plt_type == PLT_OLD)
7165 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7169 val = sdyn->output_section->vma + sdyn->output_offset;
7170 bfd_put_32 (output_bfd, val, p);
7172 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7175 /* Fill in the first entry in the VxWorks procedure linkage table. */
7176 if (splt && splt->size > 0)
7178 /* Use the right PLT. */
7179 static const bfd_vma *plt_entry = NULL;
7180 plt_entry = info->shared ?
7181 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7186 (htab->elf.hgot->root.u.def.section->output_section->vma
7187 + htab->elf.hgot->root.u.def.section->output_offset
7188 + htab->elf.hgot->root.u.def.value);
7189 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7191 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7192 splt->contents + 0);
7193 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7194 splt->contents + 4);
7198 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7199 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7201 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7202 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7203 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7204 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7205 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7206 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7210 Elf_Internal_Rela rela;
7213 loc = htab->srelplt2->contents;
7215 /* Output the @ha relocation for the first instruction. */
7216 rela.r_offset = (htab->plt->output_section->vma
7217 + htab->plt->output_offset
7219 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7221 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7222 loc += sizeof (Elf32_External_Rela);
7224 /* Output the @l relocation for the second instruction. */
7225 rela.r_offset = (htab->plt->output_section->vma
7226 + htab->plt->output_offset
7228 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7230 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7231 loc += sizeof (Elf32_External_Rela);
7233 /* Fix up the remaining relocations. They may have the wrong
7234 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7235 in which symbols were output. */
7236 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7238 Elf_Internal_Rela rel;
7240 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7241 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7242 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7243 loc += sizeof (Elf32_External_Rela);
7245 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7246 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7247 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7248 loc += sizeof (Elf32_External_Rela);
7250 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7251 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7252 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7253 loc += sizeof (Elf32_External_Rela);
7258 if (htab->glink != NULL && htab->glink->contents != NULL)
7261 unsigned char *endp;
7266 * PIC glink code is the following:
7268 * # ith PLT code stub.
7269 * addis 11,30,(plt+(i-1)*4-got)@ha
7270 * lwz 11,(plt+(i-1)*4-got)@l(11)
7274 * # A table of branches, one for each plt entry.
7275 * # The idea is that the plt call stub loads ctr (and r11) with these
7276 * # addresses, so (r11 - res_0) gives the plt index * 4.
7277 * res_0: b PLTresolve
7278 * res_1: b PLTresolve
7280 * # Some number of entries towards the end can be nops
7286 * addis 11,11,(1f-res_0)@ha
7289 * 1: addi 11,11,(1b-res_0)@l
7292 * sub 11,11,12 # r11 = index * 4
7293 * addis 12,12,(got+4-1b)@ha
7294 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7295 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7298 * add 11,0,11 # r11 = index * 12 = reloc offset.
7301 static const unsigned int pic_plt_resolve[] =
7321 static const unsigned int plt_resolve[] =
7341 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7343 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7346 /* Build the branch table, one for each plt entry (less one),
7347 and perhaps some padding. */
7348 p = htab->glink->contents;
7349 p += htab->glink_pltresolve;
7350 endp = htab->glink->contents;
7351 endp += htab->glink->size - GLINK_PLTRESOLVE;
7352 while (p < endp - 8 * 4)
7354 bfd_put_32 (output_bfd, B + endp - p, p);
7359 bfd_put_32 (output_bfd, NOP, p);
7363 res0 = (htab->glink_pltresolve
7364 + htab->glink->output_section->vma
7365 + htab->glink->output_offset);
7367 /* Last comes the PLTresolve stub. */
7368 if (info->shared || info->pie)
7372 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7374 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7377 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7379 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7380 + htab->glink->output_section->vma
7381 + htab->glink->output_offset);
7383 bfd_put_32 (output_bfd,
7384 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7385 bfd_put_32 (output_bfd,
7386 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7387 bfd_put_32 (output_bfd,
7388 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7389 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7391 bfd_put_32 (output_bfd,
7392 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7393 bfd_put_32 (output_bfd,
7394 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7398 bfd_put_32 (output_bfd,
7399 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7400 bfd_put_32 (output_bfd,
7401 LWZ_12_12 + 4, p + 9*4);
7406 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7408 bfd_put_32 (output_bfd, plt_resolve[i], p);
7411 p -= 4 * ARRAY_SIZE (plt_resolve);
7413 bfd_put_32 (output_bfd,
7414 LIS_12 + PPC_HA (got + 4), p + 0*4);
7415 bfd_put_32 (output_bfd,
7416 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7417 bfd_put_32 (output_bfd,
7418 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7419 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7421 bfd_put_32 (output_bfd,
7422 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7423 bfd_put_32 (output_bfd,
7424 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7428 bfd_put_32 (output_bfd,
7429 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7430 bfd_put_32 (output_bfd,
7431 LWZ_12_12 + 4, p + 6*4);
7439 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7440 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7441 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7442 #define TARGET_BIG_NAME "elf32-powerpc"
7443 #define ELF_ARCH bfd_arch_powerpc
7444 #define ELF_MACHINE_CODE EM_PPC
7445 #ifdef __QNXTARGET__
7446 #define ELF_MAXPAGESIZE 0x1000
7448 #define ELF_MAXPAGESIZE 0x10000
7450 #define ELF_MINPAGESIZE 0x1000
7451 #define elf_info_to_howto ppc_elf_info_to_howto
7453 #ifdef EM_CYGNUS_POWERPC
7454 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7458 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7461 #define elf_backend_plt_not_loaded 1
7462 #define elf_backend_can_gc_sections 1
7463 #define elf_backend_can_refcount 1
7464 #define elf_backend_rela_normal 1
7466 #define bfd_elf32_mkobject ppc_elf_mkobject
7467 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7468 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7469 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7470 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7471 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7473 #define elf_backend_object_p ppc_elf_object_p
7474 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7475 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7476 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7477 #define elf_backend_relocate_section ppc_elf_relocate_section
7478 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7479 #define elf_backend_check_relocs ppc_elf_check_relocs
7480 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7481 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7482 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7483 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7484 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7485 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7486 #define elf_backend_fake_sections ppc_elf_fake_sections
7487 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7488 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7489 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7490 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7491 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7492 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7493 #define elf_backend_write_section ppc_elf_write_section
7494 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7495 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7496 #define elf_backend_action_discarded ppc_elf_action_discarded
7498 #include "elf32-target.h"
7500 /* VxWorks Target */
7502 #undef TARGET_LITTLE_SYM
7503 #undef TARGET_LITTLE_NAME
7505 #undef TARGET_BIG_SYM
7506 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7507 #undef TARGET_BIG_NAME
7508 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7510 /* VxWorks uses the elf default section flags for .plt. */
7511 static const struct bfd_elf_special_section *
7512 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7514 if (sec->name == NULL)
7517 if (strcmp (sec->name, ".plt") == 0)
7518 return _bfd_elf_get_sec_type_attr (abfd, sec);
7520 return ppc_elf_get_sec_type_attr (abfd, sec);
7523 /* Like ppc_elf_link_hash_table_create, but overrides
7524 appropriately for VxWorks. */
7525 static struct bfd_link_hash_table *
7526 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7528 struct bfd_link_hash_table *ret;
7530 ret = ppc_elf_link_hash_table_create (abfd);
7533 struct ppc_elf_link_hash_table *htab
7534 = (struct ppc_elf_link_hash_table *)ret;
7535 htab->is_vxworks = 1;
7536 htab->plt_type = PLT_VXWORKS;
7537 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7538 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7539 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7544 /* Tweak magic VxWorks symbols as they are loaded. */
7546 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7547 struct bfd_link_info *info,
7548 Elf_Internal_Sym *sym,
7549 const char **namep ATTRIBUTE_UNUSED,
7550 flagword *flagsp ATTRIBUTE_UNUSED,
7554 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7558 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7562 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7564 ppc_elf_final_write_processing(abfd, linker);
7565 elf_vxworks_final_write_processing(abfd, linker);
7568 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7570 #undef elf_backend_want_plt_sym
7571 #define elf_backend_want_plt_sym 1
7572 #undef elf_backend_want_got_plt
7573 #define elf_backend_want_got_plt 1
7574 #undef elf_backend_got_symbol_offset
7575 #define elf_backend_got_symbol_offset 0
7576 #undef elf_backend_plt_not_loaded
7577 #define elf_backend_plt_not_loaded 0
7578 #undef elf_backend_plt_readonly
7579 #define elf_backend_plt_readonly 1
7580 #undef elf_backend_got_header_size
7581 #define elf_backend_got_header_size 12
7583 #undef bfd_elf32_bfd_link_hash_table_create
7584 #define bfd_elf32_bfd_link_hash_table_create \
7585 ppc_elf_vxworks_link_hash_table_create
7586 #undef elf_backend_add_symbol_hook
7587 #define elf_backend_add_symbol_hook \
7588 ppc_elf_vxworks_add_symbol_hook
7589 #undef elf_backend_link_output_symbol_hook
7590 #define elf_backend_link_output_symbol_hook \
7591 elf_vxworks_link_output_symbol_hook
7592 #undef elf_backend_final_write_processing
7593 #define elf_backend_final_write_processing \
7594 ppc_elf_vxworks_final_write_processing
7595 #undef elf_backend_get_sec_type_attr
7596 #define elf_backend_get_sec_type_attr \
7597 ppc_elf_vxworks_get_sec_type_attr
7598 #undef elf_backend_emit_relocs
7599 #define elf_backend_emit_relocs \
7600 elf_vxworks_emit_relocs
7603 #define elf32_bed ppc_elf_vxworks_bed
7605 #include "elf32-target.h"
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