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_EXCLUDE) != 0)
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 /* PPC ELF linker hash table. */
2318 struct ppc_elf_link_hash_table
2320 struct elf_link_hash_table elf;
2322 /* Short-cuts to get to dynamic linker sections. */
2332 elf_linker_section_t sdata[2];
2335 /* Shortcut to .__tls_get_addr. */
2336 struct elf_link_hash_entry *tls_get_addr;
2338 /* TLS local dynamic got entry handling. */
2340 bfd_signed_vma refcount;
2344 /* Offset of PltResolve function in glink. */
2345 bfd_vma glink_pltresolve;
2347 /* Size of reserved GOT entries. */
2348 unsigned int got_header_size;
2349 /* Non-zero if allocating the header left a gap. */
2350 unsigned int got_gap;
2352 /* Whether to use new plt/got layout or not. */
2353 unsigned int new_plt:1;
2354 unsigned int old_plt:1;
2356 /* Small local sym to section mapping cache. */
2357 struct sym_sec_cache sym_sec;
2359 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2362 /* The .got.plt section (VxWorks only)*/
2365 /* Short-cuts to frequently used symbols on VxWorks targets. */
2366 struct elf_link_hash_entry *hplt;
2368 /* True if the target system is VxWorks. */
2371 /* The size of PLT entries. */
2373 /* The distance between adjacent PLT slots. */
2375 /* The size of the first PLT entry. */
2376 int plt_initial_entry_size;
2379 /* Get the PPC ELF linker hash table from a link_info structure. */
2381 #define ppc_elf_hash_table(p) \
2382 ((struct ppc_elf_link_hash_table *) (p)->hash)
2384 /* Create an entry in a PPC ELF linker hash table. */
2386 static struct bfd_hash_entry *
2387 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2388 struct bfd_hash_table *table,
2391 /* Allocate the structure if it has not already been allocated by a
2395 entry = bfd_hash_allocate (table,
2396 sizeof (struct ppc_elf_link_hash_entry));
2401 /* Call the allocation method of the superclass. */
2402 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2405 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2406 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2407 ppc_elf_hash_entry (entry)->tls_mask = 0;
2413 /* Create a PPC ELF linker hash table. */
2415 static struct bfd_link_hash_table *
2416 ppc_elf_link_hash_table_create (bfd *abfd)
2418 struct ppc_elf_link_hash_table *ret;
2420 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2424 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2425 ppc_elf_link_hash_newfunc))
2431 ret->elf.init_plt_refcount.refcount = 0;
2432 ret->elf.init_plt_refcount.glist = NULL;
2433 ret->elf.init_plt_offset.offset = 0;
2434 ret->elf.init_plt_offset.glist = NULL;
2436 ret->sdata[0].name = ".sdata";
2437 ret->sdata[0].sym_name = "_SDA_BASE_";
2438 ret->sdata[0].bss_name = ".sbss";
2440 ret->sdata[1].name = ".sdata2";
2441 ret->sdata[1].sym_name = "_SDA2_BASE_";
2442 ret->sdata[1].bss_name = ".sbss2";
2444 ret->plt_entry_size = 12;
2445 ret->plt_slot_size = 8;
2446 ret->plt_initial_entry_size = 72;
2448 ret->is_vxworks = 0;
2450 return &ret->elf.root;
2453 /* Create .got and the related sections. */
2456 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2458 struct ppc_elf_link_hash_table *htab;
2462 if (!_bfd_elf_create_got_section (abfd, info))
2465 htab = ppc_elf_hash_table (info);
2466 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2470 if (htab->is_vxworks)
2472 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2478 /* The powerpc .got has a blrl instruction in it. Mark it
2480 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2481 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2482 if (!bfd_set_section_flags (abfd, s, flags))
2486 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2487 | SEC_LINKER_CREATED | SEC_READONLY);
2488 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2490 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2496 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2497 to output sections (just like _bfd_elf_create_dynamic_sections has
2498 to create .dynbss and .rela.bss). */
2501 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2503 struct ppc_elf_link_hash_table *htab;
2507 htab = ppc_elf_hash_table (info);
2509 if (htab->got == NULL
2510 && !ppc_elf_create_got (abfd, info))
2513 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2516 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2517 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2519 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2522 || !bfd_set_section_alignment (abfd, s, 4))
2525 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2526 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2527 SEC_ALLOC | SEC_LINKER_CREATED);
2534 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2535 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2538 || ! bfd_set_section_alignment (abfd, s, 2))
2542 /* Create the section for VxWorks static plt relocations. */
2543 if (htab->is_vxworks && !info->shared)
2545 s = bfd_make_section (abfd, ".rela.plt.unloaded");
2546 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY
2547 | SEC_LINKER_CREATED);
2549 || ! bfd_set_section_flags (abfd, s, flags)
2550 || ! bfd_set_section_alignment (abfd, s,
2551 get_elf_backend_data (abfd)->s->log_file_align))
2556 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2557 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2561 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2562 return bfd_set_section_flags (abfd, s, flags);
2565 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2568 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
2569 struct elf_link_hash_entry *dir,
2570 struct elf_link_hash_entry *ind)
2572 struct ppc_elf_link_hash_entry *edir, *eind;
2575 edir = (struct ppc_elf_link_hash_entry *) dir;
2576 eind = (struct ppc_elf_link_hash_entry *) ind;
2578 if (eind->dyn_relocs != NULL)
2580 if (edir->dyn_relocs != NULL)
2582 struct ppc_elf_dyn_relocs **pp;
2583 struct ppc_elf_dyn_relocs *p;
2585 if (ind->root.type == bfd_link_hash_indirect)
2588 /* Add reloc counts against the weak sym to the strong sym
2589 list. Merge any entries against the same section. */
2590 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2592 struct ppc_elf_dyn_relocs *q;
2594 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2595 if (q->sec == p->sec)
2597 q->pc_count += p->pc_count;
2598 q->count += p->count;
2605 *pp = edir->dyn_relocs;
2608 edir->dyn_relocs = eind->dyn_relocs;
2609 eind->dyn_relocs = NULL;
2612 edir->tls_mask |= eind->tls_mask;
2613 edir->has_sda_refs |= eind->has_sda_refs;
2615 /* If called to transfer flags for a weakdef during processing
2616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2618 if (!(ELIMINATE_COPY_RELOCS
2619 && eind->elf.root.type != bfd_link_hash_indirect
2620 && edir->elf.dynamic_adjusted))
2621 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2623 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2624 edir->elf.ref_regular |= eind->elf.ref_regular;
2625 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2626 edir->elf.needs_plt |= eind->elf.needs_plt;
2628 /* If we were called to copy over info for a weak sym, that's all. */
2629 if (eind->elf.root.type != bfd_link_hash_indirect)
2632 /* Copy over the GOT refcount entries that we may have already seen to
2633 the symbol which just became indirect. */
2634 tmp = edir->elf.got.refcount;
2637 edir->elf.got.refcount = eind->elf.got.refcount;
2638 eind->elf.got.refcount = tmp;
2641 BFD_ASSERT (eind->elf.got.refcount < 1);
2643 /* And plt entries. */
2644 if (eind->elf.plt.plist != NULL)
2646 if (edir->elf.plt.plist != NULL)
2648 struct plt_entry **entp;
2649 struct plt_entry *ent;
2651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2653 struct plt_entry *dent;
2655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2656 if (dent->sec == ent->sec && dent->addend == ent->addend)
2658 dent->plt.refcount += ent->plt.refcount;
2665 *entp = edir->elf.plt.plist;
2668 edir->elf.plt.plist = eind->elf.plt.plist;
2669 eind->elf.plt.plist = NULL;
2672 if (edir->elf.dynindx == -1)
2674 edir->elf.dynindx = eind->elf.dynindx;
2675 edir->elf.dynstr_index = eind->elf.dynstr_index;
2676 eind->elf.dynindx = -1;
2677 eind->elf.dynstr_index = 0;
2680 BFD_ASSERT (eind->elf.dynindx == -1);
2683 /* Return 1 if target is one of ours. */
2686 is_ppc_elf_target (const struct bfd_target *targ)
2688 extern const bfd_target bfd_elf32_powerpc_vec;
2689 extern const bfd_target bfd_elf32_powerpcle_vec;
2691 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2694 /* Hook called by the linker routine which adds symbols from an object
2695 file. We use it to put .comm items in .sbss, and not .bss. */
2698 ppc_elf_add_symbol_hook (bfd *abfd,
2699 struct bfd_link_info *info,
2700 Elf_Internal_Sym *sym,
2701 const char **namep ATTRIBUTE_UNUSED,
2702 flagword *flagsp ATTRIBUTE_UNUSED,
2706 if (sym->st_shndx == SHN_COMMON
2707 && !info->relocatable
2708 && sym->st_size <= elf_gp_size (abfd)
2709 && is_ppc_elf_target (info->hash->creator))
2711 /* Common symbols less than or equal to -G nn bytes are automatically
2713 struct ppc_elf_link_hash_table *htab;
2715 htab = ppc_elf_hash_table (info);
2716 if (htab->sbss == NULL)
2718 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2720 if (!htab->elf.dynobj)
2721 htab->elf.dynobj = abfd;
2723 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2726 if (htab->sbss == NULL)
2731 *valp = sym->st_size;
2738 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2739 elf_linker_section_t *lsect)
2741 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2743 if (lsect->sym == NULL)
2745 if (lsect->sym->root.type == bfd_link_hash_new)
2746 lsect->sym->non_elf = 0;
2747 lsect->sym->ref_regular = 1;
2751 /* Create a special linker section. */
2754 ppc_elf_create_linker_section (bfd *abfd,
2755 struct bfd_link_info *info,
2757 elf_linker_section_t *lsect)
2759 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2762 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2763 | SEC_LINKER_CREATED);
2765 /* Record the first bfd that needs the special sections. */
2766 if (!htab->elf.dynobj)
2767 htab->elf.dynobj = abfd;
2769 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2773 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2777 return create_sdata_sym (htab, lsect);
2780 /* Find a linker generated pointer with a given addend and type. */
2782 static elf_linker_section_pointers_t *
2783 elf_find_pointer_linker_section
2784 (elf_linker_section_pointers_t *linker_pointers,
2786 elf_linker_section_t *lsect)
2788 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2789 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2790 return linker_pointers;
2795 /* Allocate a pointer to live in a linker created section. */
2798 elf_create_pointer_linker_section (bfd *abfd,
2799 elf_linker_section_t *lsect,
2800 struct elf_link_hash_entry *h,
2801 const Elf_Internal_Rela *rel)
2803 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2804 elf_linker_section_pointers_t *linker_section_ptr;
2805 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2808 BFD_ASSERT (lsect != NULL);
2810 /* Is this a global symbol? */
2813 struct ppc_elf_link_hash_entry *eh;
2815 /* Has this symbol already been allocated? If so, our work is done. */
2816 eh = (struct ppc_elf_link_hash_entry *) h;
2817 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2822 ptr_linker_section_ptr = &eh->linker_section_pointer;
2826 /* Allocation of a pointer to a local symbol. */
2827 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2829 /* Allocate a table to hold the local symbols if first time. */
2832 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2835 amt *= sizeof (elf_linker_section_pointers_t *);
2836 ptr = bfd_zalloc (abfd, amt);
2841 elf_local_ptr_offsets (abfd) = ptr;
2844 /* Has this symbol already been allocated? If so, our work is done. */
2845 if (elf_find_pointer_linker_section (ptr[r_symndx],
2850 ptr_linker_section_ptr = &ptr[r_symndx];
2853 /* Allocate space for a pointer in the linker section, and allocate
2854 a new pointer record from internal memory. */
2855 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2856 amt = sizeof (elf_linker_section_pointers_t);
2857 linker_section_ptr = bfd_alloc (abfd, amt);
2859 if (!linker_section_ptr)
2862 linker_section_ptr->next = *ptr_linker_section_ptr;
2863 linker_section_ptr->addend = rel->r_addend;
2864 linker_section_ptr->lsect = lsect;
2865 *ptr_linker_section_ptr = linker_section_ptr;
2867 linker_section_ptr->offset = lsect->section->size;
2868 lsect->section->size += 4;
2872 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2873 lsect->name, (long) linker_section_ptr->offset,
2874 (long) lsect->section->size);
2881 update_local_sym_info (bfd *abfd,
2882 Elf_Internal_Shdr *symtab_hdr,
2883 unsigned long r_symndx,
2886 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2887 char *local_got_tls_masks;
2889 if (local_got_refcounts == NULL)
2891 bfd_size_type size = symtab_hdr->sh_info;
2893 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2894 local_got_refcounts = bfd_zalloc (abfd, size);
2895 if (local_got_refcounts == NULL)
2897 elf_local_got_refcounts (abfd) = local_got_refcounts;
2900 local_got_refcounts[r_symndx] += 1;
2901 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2902 local_got_tls_masks[r_symndx] |= tls_type;
2907 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2908 asection *sec, bfd_vma addend)
2910 struct plt_entry *ent;
2914 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2915 if (ent->sec == sec && ent->addend == addend)
2919 bfd_size_type amt = sizeof (*ent);
2920 ent = bfd_alloc (abfd, amt);
2923 ent->next = h->plt.plist;
2925 ent->addend = addend;
2926 ent->plt.refcount = 0;
2929 ent->plt.refcount += 1;
2933 static struct plt_entry *
2934 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2936 struct plt_entry *ent;
2940 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2941 if (ent->sec == sec && ent->addend == addend)
2947 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2949 (*_bfd_error_handler)
2950 (_("%B: relocation %s cannot be used when making a shared object"),
2952 ppc_elf_howto_table[r_type]->name);
2953 bfd_set_error (bfd_error_bad_value);
2956 /* Look through the relocs for a section during the first phase, and
2957 allocate space in the global offset table or procedure linkage
2961 ppc_elf_check_relocs (bfd *abfd,
2962 struct bfd_link_info *info,
2964 const Elf_Internal_Rela *relocs)
2966 struct ppc_elf_link_hash_table *htab;
2967 Elf_Internal_Shdr *symtab_hdr;
2968 struct elf_link_hash_entry **sym_hashes;
2969 const Elf_Internal_Rela *rel;
2970 const Elf_Internal_Rela *rel_end;
2971 asection *got2, *sreloc;
2973 if (info->relocatable)
2976 /* Don't do anything special with non-loaded, non-alloced sections.
2977 In particular, any relocs in such sections should not affect GOT
2978 and PLT reference counting (ie. we don't allow them to create GOT
2979 or PLT entries), there's no possibility or desire to optimize TLS
2980 relocs, and there's not much point in propagating relocs to shared
2981 libs that the dynamic linker won't relocate. */
2982 if ((sec->flags & SEC_ALLOC) == 0)
2986 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2990 /* Initialize howto table if not already done. */
2991 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2992 ppc_elf_howto_init ();
2994 htab = ppc_elf_hash_table (info);
2995 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2996 sym_hashes = elf_sym_hashes (abfd);
2997 got2 = bfd_get_section_by_name (abfd, ".got2");
3000 rel_end = relocs + sec->reloc_count;
3001 for (rel = relocs; rel < rel_end; rel++)
3003 unsigned long r_symndx;
3004 enum elf_ppc_reloc_type r_type;
3005 struct elf_link_hash_entry *h;
3008 r_symndx = ELF32_R_SYM (rel->r_info);
3009 if (r_symndx < symtab_hdr->sh_info)
3013 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3014 while (h->root.type == bfd_link_hash_indirect
3015 || h->root.type == bfd_link_hash_warning)
3016 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3019 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3020 This shows up in particular in an R_PPC_ADDR32 in the eabi
3023 && htab->got == NULL
3024 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3026 if (htab->elf.dynobj == NULL)
3027 htab->elf.dynobj = abfd;
3028 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3030 BFD_ASSERT (h == htab->elf.hgot);
3033 r_type = ELF32_R_TYPE (rel->r_info);
3036 case R_PPC_GOT_TLSLD16:
3037 case R_PPC_GOT_TLSLD16_LO:
3038 case R_PPC_GOT_TLSLD16_HI:
3039 case R_PPC_GOT_TLSLD16_HA:
3040 htab->tlsld_got.refcount += 1;
3041 tls_type = TLS_TLS | TLS_LD;
3044 case R_PPC_GOT_TLSGD16:
3045 case R_PPC_GOT_TLSGD16_LO:
3046 case R_PPC_GOT_TLSGD16_HI:
3047 case R_PPC_GOT_TLSGD16_HA:
3048 tls_type = TLS_TLS | TLS_GD;
3051 case R_PPC_GOT_TPREL16:
3052 case R_PPC_GOT_TPREL16_LO:
3053 case R_PPC_GOT_TPREL16_HI:
3054 case R_PPC_GOT_TPREL16_HA:
3056 info->flags |= DF_STATIC_TLS;
3057 tls_type = TLS_TLS | TLS_TPREL;
3060 case R_PPC_GOT_DTPREL16:
3061 case R_PPC_GOT_DTPREL16_LO:
3062 case R_PPC_GOT_DTPREL16_HI:
3063 case R_PPC_GOT_DTPREL16_HA:
3064 tls_type = TLS_TLS | TLS_DTPREL;
3066 sec->has_tls_reloc = 1;
3069 /* GOT16 relocations */
3071 case R_PPC_GOT16_LO:
3072 case R_PPC_GOT16_HI:
3073 case R_PPC_GOT16_HA:
3074 /* This symbol requires a global offset table entry. */
3075 if (htab->got == NULL)
3077 if (htab->elf.dynobj == NULL)
3078 htab->elf.dynobj = abfd;
3079 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3084 h->got.refcount += 1;
3085 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3088 /* This is a global offset table entry for a local symbol. */
3089 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3093 /* Indirect .sdata relocation. */
3094 case R_PPC_EMB_SDAI16:
3097 bad_shared_reloc (abfd, r_type);
3100 if (htab->sdata[0].section == NULL
3101 && !ppc_elf_create_linker_section (abfd, info, 0,
3104 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3109 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3110 h->non_got_ref = TRUE;
3114 /* Indirect .sdata2 relocation. */
3115 case R_PPC_EMB_SDA2I16:
3118 bad_shared_reloc (abfd, r_type);
3121 if (htab->sdata[1].section == NULL
3122 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3125 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3130 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3131 h->non_got_ref = TRUE;
3135 case R_PPC_SDAREL16:
3138 bad_shared_reloc (abfd, r_type);
3141 if (htab->sdata[0].sym == NULL
3142 && !create_sdata_sym (htab, &htab->sdata[0]))
3146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3147 h->non_got_ref = TRUE;
3151 case R_PPC_EMB_SDA2REL:
3154 bad_shared_reloc (abfd, r_type);
3157 if (htab->sdata[1].sym == NULL
3158 && !create_sdata_sym (htab, &htab->sdata[1]))
3162 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3163 h->non_got_ref = TRUE;
3167 case R_PPC_EMB_SDA21:
3168 case R_PPC_EMB_RELSDA:
3171 bad_shared_reloc (abfd, r_type);
3174 if (htab->sdata[0].sym == NULL
3175 && !create_sdata_sym (htab, &htab->sdata[0]))
3177 if (htab->sdata[1].sym == NULL
3178 && !create_sdata_sym (htab, &htab->sdata[1]))
3182 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3183 h->non_got_ref = TRUE;
3187 case R_PPC_EMB_NADDR32:
3188 case R_PPC_EMB_NADDR16:
3189 case R_PPC_EMB_NADDR16_LO:
3190 case R_PPC_EMB_NADDR16_HI:
3191 case R_PPC_EMB_NADDR16_HA:
3194 bad_shared_reloc (abfd, r_type);
3198 h->non_got_ref = TRUE;
3202 case R_PPC_PLTREL24:
3203 case R_PPC_PLTREL32:
3204 case R_PPC_PLT16_LO:
3205 case R_PPC_PLT16_HI:
3206 case R_PPC_PLT16_HA:
3208 fprintf (stderr, "Reloc requires a PLT entry\n");
3210 /* This symbol requires a procedure linkage table entry. We
3211 actually build the entry in finish_dynamic_symbol,
3212 because this might be a case of linking PIC code without
3213 linking in any dynamic objects, in which case we don't
3214 need to generate a procedure linkage table after all. */
3218 /* It does not make sense to have a procedure linkage
3219 table entry for a local symbol. */
3220 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3224 (long) rel->r_offset,
3225 ppc_elf_howto_table[r_type]->name);
3226 bfd_set_error (bfd_error_bad_value);
3231 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3234 if (!update_plt_info (abfd, h, got2, addend))
3239 /* The following relocations don't need to propagate the
3240 relocation if linking a shared object since they are
3241 section relative. */
3243 case R_PPC_SECTOFF_LO:
3244 case R_PPC_SECTOFF_HI:
3245 case R_PPC_SECTOFF_HA:
3246 case R_PPC_DTPREL16:
3247 case R_PPC_DTPREL16_LO:
3248 case R_PPC_DTPREL16_HI:
3249 case R_PPC_DTPREL16_HA:
3254 case R_PPC_REL16_LO:
3255 case R_PPC_REL16_HI:
3256 case R_PPC_REL16_HA:
3260 /* These are just markers. */
3262 case R_PPC_EMB_MRKREF:
3267 /* These should only appear in dynamic objects. */
3269 case R_PPC_GLOB_DAT:
3270 case R_PPC_JMP_SLOT:
3271 case R_PPC_RELATIVE:
3274 /* These aren't handled yet. We'll report an error later. */
3276 case R_PPC_EMB_RELSEC16:
3277 case R_PPC_EMB_RELST_LO:
3278 case R_PPC_EMB_RELST_HI:
3279 case R_PPC_EMB_RELST_HA:
3280 case R_PPC_EMB_BIT_FLD:
3283 /* This refers only to functions defined in the shared library. */
3284 case R_PPC_LOCAL24PC:
3285 if (h && h == htab->elf.hgot)
3289 /* This relocation describes the C++ object vtable hierarchy.
3290 Reconstruct it for later use during GC. */
3291 case R_PPC_GNU_VTINHERIT:
3292 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3296 /* This relocation describes which C++ vtable entries are actually
3297 used. Record for later use during GC. */
3298 case R_PPC_GNU_VTENTRY:
3299 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3303 /* We shouldn't really be seeing these. */
3306 info->flags |= DF_STATIC_TLS;
3310 case R_PPC_DTPMOD32:
3311 case R_PPC_DTPREL32:
3315 case R_PPC_TPREL16_LO:
3316 case R_PPC_TPREL16_HI:
3317 case R_PPC_TPREL16_HA:
3319 info->flags |= DF_STATIC_TLS;
3325 && (sec->flags & SEC_CODE) != 0
3326 && (info->shared || info->pie)
3329 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3330 the start of a function, which assembles to a REL32
3331 reference to .got2. If we detect one of these, then
3332 force the old PLT layout because the linker cannot
3333 reliably deduce the GOT pointer value needed for
3337 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3346 case R_PPC_REL14_BRTAKEN:
3347 case R_PPC_REL14_BRNTAKEN:
3350 if (h == htab->elf.hgot)
3360 case R_PPC_ADDR16_LO:
3361 case R_PPC_ADDR16_HI:
3362 case R_PPC_ADDR16_HA:
3364 case R_PPC_ADDR14_BRTAKEN:
3365 case R_PPC_ADDR14_BRNTAKEN:
3368 if (h != NULL && !info->shared)
3370 /* We may need a plt entry if the symbol turns out to be
3371 a function defined in a dynamic object. */
3372 if (!update_plt_info (abfd, h, NULL, 0))
3375 /* We may need a copy reloc too. */
3380 /* If we are creating a shared library, and this is a reloc
3381 against a global symbol, or a non PC relative reloc
3382 against a local symbol, then we need to copy the reloc
3383 into the shared library. However, if we are linking with
3384 -Bsymbolic, we do not need to copy a reloc against a
3385 global symbol which is defined in an object we are
3386 including in the link (i.e., DEF_REGULAR is set). At
3387 this point we have not seen all the input files, so it is
3388 possible that DEF_REGULAR is not set now but will be set
3389 later (it is never cleared). In case of a weak definition,
3390 DEF_REGULAR may be cleared later by a strong definition in
3391 a shared library. We account for that possibility below by
3392 storing information in the dyn_relocs field of the hash
3393 table entry. A similar situation occurs when creating
3394 shared libraries and symbol visibility changes render the
3397 If on the other hand, we are creating an executable, we
3398 may need to keep relocations for symbols satisfied by a
3399 dynamic library if we manage to avoid copy relocs for the
3402 && (MUST_BE_DYN_RELOC (r_type)
3404 && (! info->symbolic
3405 || h->root.type == bfd_link_hash_defweak
3406 || !h->def_regular))))
3407 || (ELIMINATE_COPY_RELOCS
3410 && (h->root.type == bfd_link_hash_defweak
3411 || !h->def_regular)))
3413 struct ppc_elf_dyn_relocs *p;
3414 struct ppc_elf_dyn_relocs **head;
3418 "ppc_elf_check_relocs needs to "
3419 "create relocation for %s\n",
3420 (h && h->root.root.string
3421 ? h->root.root.string : "<unknown>"));
3427 name = (bfd_elf_string_from_elf_section
3429 elf_elfheader (abfd)->e_shstrndx,
3430 elf_section_data (sec)->rel_hdr.sh_name));
3434 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3435 && strcmp (bfd_get_section_name (abfd, sec),
3438 if (htab->elf.dynobj == NULL)
3439 htab->elf.dynobj = abfd;
3440 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3445 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3447 | SEC_ALLOC | SEC_LOAD);
3448 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3452 || ! bfd_set_section_alignment (htab->elf.dynobj,
3456 elf_section_data (sec)->sreloc = sreloc;
3459 /* If this is a global symbol, we count the number of
3460 relocations we need for this symbol. */
3463 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3467 /* Track dynamic relocs needed for local syms too.
3468 We really need local syms available to do this
3474 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3479 vpp = &elf_section_data (s)->local_dynrel;
3480 head = (struct ppc_elf_dyn_relocs **) vpp;
3484 if (p == NULL || p->sec != sec)
3486 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3497 if (!MUST_BE_DYN_RELOC (r_type))
3508 /* Merge backend specific data from an object file to the output
3509 object file when linking. */
3512 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3518 if (!is_ppc_elf_target (ibfd->xvec)
3519 || !is_ppc_elf_target (obfd->xvec))
3522 /* Check if we have the same endianess. */
3523 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3526 new_flags = elf_elfheader (ibfd)->e_flags;
3527 old_flags = elf_elfheader (obfd)->e_flags;
3528 if (!elf_flags_init (obfd))
3530 /* First call, no flags set. */
3531 elf_flags_init (obfd) = TRUE;
3532 elf_elfheader (obfd)->e_flags = new_flags;
3535 /* Compatible flags are ok. */
3536 else if (new_flags == old_flags)
3539 /* Incompatible flags. */
3542 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3543 to be linked with either. */
3545 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3546 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3549 (*_bfd_error_handler)
3550 (_("%B: compiled with -mrelocatable and linked with "
3551 "modules compiled normally"), ibfd);
3553 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3554 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3557 (*_bfd_error_handler)
3558 (_("%B: compiled normally and linked with "
3559 "modules compiled with -mrelocatable"), ibfd);
3562 /* The output is -mrelocatable-lib iff both the input files are. */
3563 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3564 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3566 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3567 but each input file is either -mrelocatable or -mrelocatable-lib. */
3568 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3569 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3570 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3571 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3573 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3574 any module uses it. */
3575 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3577 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3578 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3580 /* Warn about any other mismatches. */
3581 if (new_flags != old_flags)
3584 (*_bfd_error_handler)
3585 (_("%B: uses different e_flags (0x%lx) fields "
3586 "than previous modules (0x%lx)"),
3587 ibfd, (long) new_flags, (long) old_flags);
3592 bfd_set_error (bfd_error_bad_value);
3600 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3601 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3603 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3604 struct bfd_link_info *info,
3607 struct ppc_elf_link_hash_table *htab;
3610 htab = ppc_elf_hash_table (info);
3611 if (force_old_plt || !htab->new_plt)
3614 if (htab->is_vxworks)
3616 /* The VxWorks PLT is a loaded section with contents. */
3617 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED
3618 | SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3620 if (htab->plt != NULL
3621 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3624 else if (!htab->old_plt)
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->old_plt;
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);
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 /* Allocate NEED contiguous space in .got, and return the offset.
4220 Handles allocation of the got header when crossing 32k. */
4223 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4226 unsigned int max_before_header = 32768;
4229 max_before_header = 32764;
4231 if (htab->is_vxworks)
4233 where = htab->got->size;
4234 htab->got->size += need;
4236 else if (need <= htab->got_gap)
4238 where = max_before_header - htab->got_gap;
4239 htab->got_gap -= need;
4243 if (htab->got->size + need > max_before_header
4244 && htab->got->size <= max_before_header)
4246 htab->got_gap = max_before_header - htab->got->size;
4247 htab->got->size = max_before_header + htab->got_header_size;
4249 where = htab->got->size;
4250 htab->got->size += need;
4255 /* Allocate space in associated reloc sections for dynamic relocs. */
4258 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4260 struct bfd_link_info *info = inf;
4261 struct ppc_elf_link_hash_entry *eh;
4262 struct ppc_elf_link_hash_table *htab;
4263 struct ppc_elf_dyn_relocs *p;
4265 if (h->root.type == bfd_link_hash_indirect)
4268 if (h->root.type == bfd_link_hash_warning)
4269 /* When warning symbols are created, they **replace** the "real"
4270 entry in the hash table, thus we never get to see the real
4271 symbol in a hash traversal. So look at it now. */
4272 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4274 htab = ppc_elf_hash_table (info);
4275 if (htab->elf.dynamic_sections_created)
4277 struct plt_entry *ent;
4278 bfd_boolean doneone = FALSE;
4279 bfd_vma plt_offset = 0, glink_offset = 0;
4281 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4282 if (ent->plt.refcount > 0)
4284 /* Make sure this symbol is output as a dynamic symbol. */
4285 if (h->dynindx == -1
4286 && !h->forced_local)
4288 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4293 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4295 asection *s = htab->plt;
4297 if (!(htab->old_plt || htab->is_vxworks))
4301 plt_offset = s->size;
4304 ent->plt.offset = plt_offset;
4307 if (!doneone || info->shared || info->pie)
4309 glink_offset = s->size;
4310 s->size += GLINK_ENTRY_SIZE;
4316 h->root.u.def.section = s;
4317 h->root.u.def.value = glink_offset;
4319 ent->glink_offset = glink_offset;
4325 /* If this is the first .plt entry, make room
4326 for the special first entry. */
4328 s->size += htab->plt_initial_entry_size;
4330 /* The PowerPC PLT is actually composed of two
4331 parts, the first part is 2 words (for a load
4332 and a jump), and then there is a remaining
4333 word available at the end. */
4334 plt_offset = (htab->plt_initial_entry_size
4335 + (htab->plt_slot_size
4337 - htab->plt_initial_entry_size)
4338 / htab->plt_entry_size)));
4340 /* If this symbol is not defined in a regular
4341 file, and we are not generating a shared
4342 library, then set the symbol to this location
4343 in the .plt. This is required to make
4344 function pointers compare as equal between
4345 the normal executable and the shared library. */
4349 h->root.u.def.section = s;
4350 h->root.u.def.value = plt_offset;
4353 /* Make room for this entry. */
4354 s->size += htab->plt_entry_size;
4355 /* After the 8192nd entry, room for two entries
4357 if (!htab->is_vxworks
4358 && (s->size - htab->plt_initial_entry_size)
4359 / htab->plt_entry_size
4360 > PLT_NUM_SINGLE_ENTRIES)
4361 s->size += htab->plt_entry_size;
4363 ent->plt.offset = plt_offset;
4366 /* We also need to make an entry in the .rela.plt section. */
4369 htab->relplt->size += sizeof (Elf32_External_Rela);
4371 if (htab->is_vxworks)
4373 /* Allocate space for the unloaded relocations. */
4377 == (bfd_vma) htab->plt_initial_entry_size)
4379 htab->srelplt2->size
4380 += sizeof (Elf32_External_Rela)
4381 * VXWORKS_PLTRESOLVE_RELOCS;
4384 htab->srelplt2->size
4385 += sizeof (Elf32_External_Rela)
4386 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4389 /* Every PLT entry has an associated GOT entry in
4391 htab->sgotplt->size += 4;
4397 ent->plt.offset = (bfd_vma) -1;
4401 h->plt.plist = NULL;
4408 h->plt.plist = NULL;
4412 eh = (struct ppc_elf_link_hash_entry *) h;
4413 if (eh->elf.got.refcount > 0)
4415 /* Make sure this symbol is output as a dynamic symbol. */
4416 if (eh->elf.dynindx == -1
4417 && !eh->elf.forced_local)
4419 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4423 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4424 && !eh->elf.def_dynamic)
4425 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4426 eh->elf.got.offset = (bfd_vma) -1;
4430 unsigned int need = 0;
4431 if ((eh->tls_mask & TLS_TLS) != 0)
4433 if ((eh->tls_mask & TLS_LD) != 0)
4435 if ((eh->tls_mask & TLS_GD) != 0)
4437 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4439 if ((eh->tls_mask & TLS_DTPREL) != 0)
4444 eh->elf.got.offset = allocate_got (htab, need);
4445 dyn = htab->elf.dynamic_sections_created;
4447 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4448 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4449 || eh->elf.root.type != bfd_link_hash_undefweak))
4451 /* All the entries we allocated need relocs.
4452 Except LD only needs one. */
4453 if ((eh->tls_mask & TLS_LD) != 0)
4455 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4460 eh->elf.got.offset = (bfd_vma) -1;
4462 if (eh->dyn_relocs == NULL)
4465 /* In the shared -Bsymbolic case, discard space allocated for
4466 dynamic pc-relative relocs against symbols which turn out to be
4467 defined in regular objects. For the normal shared case, discard
4468 space for relocs that have become local due to symbol visibility
4473 /* Relocs that use pc_count are those that appear on a call insn,
4474 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4475 generated via assembly. We want calls to protected symbols to
4476 resolve directly to the function rather than going via the plt.
4477 If people want function pointer comparisons to work as expected
4478 then they should avoid writing weird assembly. */
4479 if (SYMBOL_CALLS_LOCAL (info, h))
4481 struct ppc_elf_dyn_relocs **pp;
4483 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4485 p->count -= p->pc_count;
4494 /* Also discard relocs on undefined weak syms with non-default
4496 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4497 && h->root.type == bfd_link_hash_undefweak)
4498 eh->dyn_relocs = NULL;
4500 /* Make sure undefined weak symbols are output as a dynamic symbol
4503 && eh->dyn_relocs != NULL
4505 && h->root.type == bfd_link_hash_undefweak
4506 && !h->forced_local)
4508 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4512 else if (ELIMINATE_COPY_RELOCS)
4514 /* For the non-shared case, discard space for relocs against
4515 symbols which turn out to need copy relocs or are not
4522 /* Make sure this symbol is output as a dynamic symbol.
4523 Undefined weak syms won't yet be marked as dynamic. */
4524 if (h->dynindx == -1
4525 && !h->forced_local)
4527 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4531 /* If that succeeded, we know we'll be keeping all the
4533 if (h->dynindx != -1)
4537 eh->dyn_relocs = NULL;
4542 /* Finally, allocate space. */
4543 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4545 asection *sreloc = elf_section_data (p->sec)->sreloc;
4546 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4552 /* Find any dynamic relocs that apply to read-only sections. */
4555 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4557 struct ppc_elf_dyn_relocs *p;
4559 if (h->root.type == bfd_link_hash_indirect)
4562 if (h->root.type == bfd_link_hash_warning)
4563 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4565 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4567 asection *s = p->sec->output_section;
4570 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4571 == (SEC_READONLY | SEC_ALLOC)))
4573 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4575 /* Not an error, just cut short the traversal. */
4582 /* Set the sizes of the dynamic sections. */
4585 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4586 struct bfd_link_info *info)
4588 struct ppc_elf_link_hash_table *htab;
4594 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4597 htab = ppc_elf_hash_table (info);
4598 BFD_ASSERT (htab->elf.dynobj != NULL);
4600 if (elf_hash_table (info)->dynamic_sections_created)
4602 /* Set the contents of the .interp section to the interpreter. */
4603 if (info->executable)
4605 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4606 BFD_ASSERT (s != NULL);
4607 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4608 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4613 htab->got_header_size = 16;
4615 htab->got_header_size = 12;
4617 /* Set up .got offsets for local syms, and space for local dynamic
4619 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4621 bfd_signed_vma *local_got;
4622 bfd_signed_vma *end_local_got;
4624 bfd_size_type locsymcount;
4625 Elf_Internal_Shdr *symtab_hdr;
4627 if (!is_ppc_elf_target (ibfd->xvec))
4630 for (s = ibfd->sections; s != NULL; s = s->next)
4632 struct ppc_elf_dyn_relocs *p;
4634 for (p = ((struct ppc_elf_dyn_relocs *)
4635 elf_section_data (s)->local_dynrel);
4639 if (!bfd_is_abs_section (p->sec)
4640 && bfd_is_abs_section (p->sec->output_section))
4642 /* Input section has been discarded, either because
4643 it is a copy of a linkonce section or due to
4644 linker script /DISCARD/, so we'll be discarding
4647 else if (p->count != 0)
4649 elf_section_data (p->sec)->sreloc->size
4650 += p->count * sizeof (Elf32_External_Rela);
4651 if ((p->sec->output_section->flags
4652 & (SEC_READONLY | SEC_ALLOC))
4653 == (SEC_READONLY | SEC_ALLOC))
4654 info->flags |= DF_TEXTREL;
4659 local_got = elf_local_got_refcounts (ibfd);
4663 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4664 locsymcount = symtab_hdr->sh_info;
4665 end_local_got = local_got + locsymcount;
4666 lgot_masks = (char *) end_local_got;
4667 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4670 if (*lgot_masks == (TLS_TLS | TLS_LD))
4672 /* If just an LD reloc, we'll just use
4673 htab->tlsld_got.offset. */
4674 htab->tlsld_got.refcount += 1;
4675 *local_got = (bfd_vma) -1;
4679 unsigned int need = 0;
4680 if ((*lgot_masks & TLS_TLS) != 0)
4682 if ((*lgot_masks & TLS_GD) != 0)
4684 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4686 if ((*lgot_masks & TLS_DTPREL) != 0)
4691 *local_got = allocate_got (htab, need);
4693 htab->relgot->size += (need
4694 * (sizeof (Elf32_External_Rela) / 4));
4698 *local_got = (bfd_vma) -1;
4701 if (htab->tlsld_got.refcount > 0)
4703 htab->tlsld_got.offset = allocate_got (htab, 8);
4705 htab->relgot->size += sizeof (Elf32_External_Rela);
4708 htab->tlsld_got.offset = (bfd_vma) -1;
4710 if (htab->is_vxworks)
4712 /* Save the PLT symbol in the hash table for easy access.
4713 Mark GOT and PLT syms as having relocations; they might not,
4714 but we won't know for sure until we build the GOT in
4715 finish_dynamic_symbol. */
4718 htab->elf.hgot->indx = -2;
4719 htab->hplt = elf_link_hash_lookup (elf_hash_table (info),
4720 "_PROCEDURE_LINKAGE_TABLE_",
4721 FALSE, FALSE, FALSE);
4723 htab->hplt->indx = -2;
4724 /* If the PLT is executable then give the symbol function type. */
4725 if (htab->hplt && htab->plt->flags & SEC_CODE)
4726 htab->hplt->type = STT_FUNC;
4729 /* Allocate space for global sym dynamic relocs. */
4730 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4732 if (htab->got != NULL && !htab->is_vxworks)
4734 unsigned int g_o_t = 32768;
4736 /* If we haven't allocated the header, do so now. When we get here,
4737 for old plt/got the got size will be 0 to 32764 (not allocated),
4738 or 32780 to 65536 (header allocated). For new plt/got, the
4739 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4740 if (htab->got->size <= 32768)
4742 g_o_t = htab->got->size;
4745 htab->got->size += htab->got_header_size;
4748 htab->elf.hgot->root.u.def.value = g_o_t;
4751 if (htab->glink != NULL && htab->glink->size != 0)
4753 htab->glink_pltresolve = htab->glink->size;
4754 /* Space for the branch table. */
4755 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4756 /* Pad out to align the start of PLTresolve. */
4757 htab->glink->size += -htab->glink->size & 15;
4758 htab->glink->size += GLINK_PLTRESOLVE;
4761 /* We've now determined the sizes of the various dynamic sections.
4762 Allocate memory for them. */
4764 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4766 bfd_boolean strip_section = TRUE;
4768 if ((s->flags & SEC_LINKER_CREATED) == 0)
4774 || s == htab->sgotplt
4776 || s == htab->dynbss
4777 || s == htab->dynsbss)
4779 /* We'd like to strip these sections if they aren't needed, but if
4780 we've exported dynamic symbols from them we must leave them.
4781 It's too late to tell BFD to get rid of the symbols. */
4782 if ((s == htab->plt || s == htab->got) && htab->hplt != NULL)
4783 strip_section = FALSE;
4784 /* Strip this section if we don't need it; see the
4787 else if (s == htab->sdata[0].section
4788 || s == htab->sdata[1].section)
4790 /* Strip these too. */
4792 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4796 /* Remember whether there are any relocation sections. */
4799 /* We use the reloc_count field as a counter if we need
4800 to copy relocs into the output file. */
4806 /* It's not one of our sections, so don't allocate space. */
4810 if (s->size == 0 && strip_section)
4812 /* If we don't need this section, strip it from the
4813 output file. This is mostly to handle .rela.bss and
4814 .rela.plt. We must create both sections in
4815 create_dynamic_sections, because they must be created
4816 before the linker maps input sections to output
4817 sections. The linker does that before
4818 adjust_dynamic_symbol is called, and it is that
4819 function which decides whether anything needs to go
4820 into these sections. */
4821 s->flags |= SEC_EXCLUDE;
4825 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4828 /* Allocate memory for the section contents. */
4829 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4830 if (s->contents == NULL)
4834 if (htab->elf.dynamic_sections_created)
4836 /* Add some entries to the .dynamic section. We fill in the
4837 values later, in ppc_elf_finish_dynamic_sections, but we
4838 must add the entries now so that we get the correct size for
4839 the .dynamic section. The DT_DEBUG entry is filled in by the
4840 dynamic linker and used by the debugger. */
4841 #define add_dynamic_entry(TAG, VAL) \
4842 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4844 if (info->executable)
4846 if (!add_dynamic_entry (DT_DEBUG, 0))
4850 if (htab->plt != NULL && htab->plt->size != 0)
4852 if (!add_dynamic_entry (DT_PLTGOT, 0)
4853 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4854 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4855 || !add_dynamic_entry (DT_JMPREL, 0))
4859 if (htab->glink != NULL && htab->glink->size != 0)
4861 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4867 if (!add_dynamic_entry (DT_RELA, 0)
4868 || !add_dynamic_entry (DT_RELASZ, 0)
4869 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4873 /* If any dynamic relocs apply to a read-only section, then we
4874 need a DT_TEXTREL entry. */
4875 if ((info->flags & DF_TEXTREL) == 0)
4876 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4879 if ((info->flags & DF_TEXTREL) != 0)
4881 if (!add_dynamic_entry (DT_TEXTREL, 0))
4885 #undef add_dynamic_entry
4890 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4892 static const int shared_stub_entry[] =
4894 0x7c0802a6, /* mflr 0 */
4895 0x429f0005, /* bcl 20, 31, .Lxxx */
4896 0x7d6802a6, /* mflr 11 */
4897 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4898 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4899 0x7c0803a6, /* mtlr 0 */
4900 0x7d6903a6, /* mtctr 11 */
4901 0x4e800420, /* bctr */
4904 static const int stub_entry[] =
4906 0x3d600000, /* lis 11,xxx@ha */
4907 0x396b0000, /* addi 11,11,xxx@l */
4908 0x7d6903a6, /* mtctr 11 */
4909 0x4e800420, /* bctr */
4913 ppc_elf_relax_section (bfd *abfd,
4915 struct bfd_link_info *link_info,
4920 struct one_fixup *next;
4926 Elf_Internal_Shdr *symtab_hdr;
4927 bfd_byte *contents = NULL;
4928 Elf_Internal_Sym *isymbuf = NULL;
4929 Elf_Internal_Rela *internal_relocs = NULL;
4930 Elf_Internal_Rela *irel, *irelend;
4931 struct one_fixup *fixups = NULL;
4932 bfd_boolean changed;
4933 struct ppc_elf_link_hash_table *htab;
4934 bfd_size_type trampoff;
4939 /* Nothing to do if there are no relocations, and no need to do
4940 anything with non-alloc sections. */
4941 if ((isec->flags & SEC_ALLOC) == 0
4942 || (isec->flags & SEC_RELOC) == 0
4943 || isec->reloc_count == 0)
4946 trampoff = (isec->size + 3) & (bfd_vma) -4;
4947 /* Space for a branch around any trampolines. */
4950 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4952 /* Get a copy of the native relocations. */
4953 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4954 link_info->keep_memory);
4955 if (internal_relocs == NULL)
4958 htab = ppc_elf_hash_table (link_info);
4959 got2 = bfd_get_section_by_name (abfd, ".got2");
4961 irelend = internal_relocs + isec->reloc_count;
4962 for (irel = internal_relocs; irel < irelend; irel++)
4964 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4965 bfd_vma symaddr, reladdr, toff, roff;
4967 struct one_fixup *f;
4968 size_t insn_offset = 0;
4969 bfd_vma max_branch_offset, val;
4972 unsigned char sym_type;
4977 case R_PPC_LOCAL24PC:
4978 case R_PPC_PLTREL24:
4979 max_branch_offset = 1 << 25;
4983 case R_PPC_REL14_BRTAKEN:
4984 case R_PPC_REL14_BRNTAKEN:
4985 max_branch_offset = 1 << 15;
4992 /* Get the value of the symbol referred to by the reloc. */
4993 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4995 /* A local symbol. */
4996 Elf_Internal_Sym *isym;
4998 /* Read this BFD's local symbols. */
4999 if (isymbuf == NULL)
5001 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5002 if (isymbuf == NULL)
5003 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5004 symtab_hdr->sh_info, 0,
5009 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5010 if (isym->st_shndx == SHN_UNDEF)
5011 continue; /* We can't do anything with undefined symbols. */
5012 else if (isym->st_shndx == SHN_ABS)
5013 tsec = bfd_abs_section_ptr;
5014 else if (isym->st_shndx == SHN_COMMON)
5015 tsec = bfd_com_section_ptr;
5017 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5019 toff = isym->st_value;
5020 sym_type = ELF_ST_TYPE (isym->st_info);
5024 /* Global symbol handling. */
5026 struct elf_link_hash_entry *h;
5028 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5029 h = elf_sym_hashes (abfd)[indx];
5031 while (h->root.type == bfd_link_hash_indirect
5032 || h->root.type == bfd_link_hash_warning)
5033 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5037 if (r_type == R_PPC_PLTREL24
5038 && htab->plt != NULL)
5040 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5047 toff = ent->glink_offset;
5052 toff = ent->plt.offset;
5058 else if (h->root.type == bfd_link_hash_defined
5059 || h->root.type == bfd_link_hash_defweak)
5061 tsec = h->root.u.def.section;
5062 toff = h->root.u.def.value;
5070 /* If the branch and target are in the same section, you have
5071 no hope of adding stubs. We'll error out later should the
5076 /* There probably isn't any reason to handle symbols in
5077 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5078 attribute for a code section, and we are only looking at
5079 branches. However, implement it correctly here as a
5080 reference for other target relax_section functions. */
5081 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5083 /* At this stage in linking, no SEC_MERGE symbol has been
5084 adjusted, so all references to such symbols need to be
5085 passed through _bfd_merged_section_offset. (Later, in
5086 relocate_section, all SEC_MERGE symbols *except* for
5087 section symbols have been adjusted.)
5089 gas may reduce relocations against symbols in SEC_MERGE
5090 sections to a relocation against the section symbol when
5091 the original addend was zero. When the reloc is against
5092 a section symbol we should include the addend in the
5093 offset passed to _bfd_merged_section_offset, since the
5094 location of interest is the original symbol. On the
5095 other hand, an access to "sym+addend" where "sym" is not
5096 a section symbol should not include the addend; Such an
5097 access is presumed to be an offset from "sym"; The
5098 location of interest is just "sym". */
5099 if (sym_type == STT_SECTION)
5100 toff += irel->r_addend;
5102 toff = _bfd_merged_section_offset (abfd, &tsec,
5103 elf_section_data (tsec)->sec_info,
5106 if (sym_type != STT_SECTION)
5107 toff += irel->r_addend;
5109 /* PLTREL24 addends are special. */
5110 else if (r_type != R_PPC_PLTREL24)
5111 toff += irel->r_addend;
5113 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5115 roff = irel->r_offset;
5116 reladdr = isec->output_section->vma + isec->output_offset + roff;
5118 /* If the branch is in range, no need to do anything. */
5119 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5122 /* Look for an existing fixup to this address. */
5123 for (f = fixups; f ; f = f->next)
5124 if (f->tsec == tsec && f->toff == toff)
5130 unsigned long stub_rtype;
5132 val = trampoff - roff;
5133 if (val >= max_branch_offset)
5134 /* Oh dear, we can't reach a trampoline. Don't try to add
5135 one. We'll report an error later. */
5138 if (link_info->shared)
5140 size = 4 * ARRAY_SIZE (shared_stub_entry);
5142 stub_rtype = R_PPC_RELAX32PC;
5146 size = 4 * ARRAY_SIZE (stub_entry);
5148 stub_rtype = R_PPC_RELAX32;
5151 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5152 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5154 if (tsec == htab->plt
5155 || tsec == htab->glink)
5156 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5158 /* Hijack the old relocation. Since we need two
5159 relocations for this use a "composite" reloc. */
5160 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5162 irel->r_offset = trampoff + insn_offset;
5164 /* Record the fixup so we don't do it again this section. */
5165 f = bfd_malloc (sizeof (*f));
5169 f->trampoff = trampoff;
5176 val = f->trampoff - roff;
5177 if (val >= max_branch_offset)
5180 /* Nop out the reloc, since we're finalizing things here. */
5181 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5184 /* Get the section contents. */
5185 if (contents == NULL)
5187 /* Get cached copy if it exists. */
5188 if (elf_section_data (isec)->this_hdr.contents != NULL)
5189 contents = elf_section_data (isec)->this_hdr.contents;
5192 /* Go get them off disk. */
5193 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5198 /* Fix up the existing branch to hit the trampoline. */
5199 hit_addr = contents + roff;
5203 case R_PPC_LOCAL24PC:
5204 case R_PPC_PLTREL24:
5205 t0 = bfd_get_32 (abfd, hit_addr);
5207 t0 |= val & 0x3fffffc;
5208 bfd_put_32 (abfd, t0, hit_addr);
5212 case R_PPC_REL14_BRTAKEN:
5213 case R_PPC_REL14_BRNTAKEN:
5214 t0 = bfd_get_32 (abfd, hit_addr);
5217 bfd_put_32 (abfd, t0, hit_addr);
5222 /* Write out the trampolines. */
5223 changed = fixups != NULL;
5233 struct one_fixup *f = fixups;
5234 fixups = fixups->next;
5239 contents = bfd_realloc (contents, trampoff);
5240 if (contents == NULL)
5243 isec->size = (isec->size + 3) & (bfd_vma) -4;
5244 /* Branch around the trampolines. */
5245 val = trampoff - isec->size + 0x48000000;
5246 dest = contents + isec->size;
5247 isec->size = trampoff;
5248 bfd_put_32 (abfd, val, dest);
5251 if (link_info->shared)
5253 stub = shared_stub_entry;
5254 size = ARRAY_SIZE (shared_stub_entry);
5259 size = ARRAY_SIZE (stub_entry);
5263 while (dest < contents + trampoff)
5265 bfd_put_32 (abfd, stub[i], dest);
5271 BFD_ASSERT (i == 0);
5275 && symtab_hdr->contents != (unsigned char *) isymbuf)
5277 if (! link_info->keep_memory)
5281 /* Cache the symbols for elf_link_input_bfd. */
5282 symtab_hdr->contents = (unsigned char *) isymbuf;
5286 if (contents != NULL
5287 && elf_section_data (isec)->this_hdr.contents != contents)
5289 if (!changed && !link_info->keep_memory)
5293 /* Cache the section contents for elf_link_input_bfd. */
5294 elf_section_data (isec)->this_hdr.contents = contents;
5298 if (elf_section_data (isec)->relocs != internal_relocs)
5301 free (internal_relocs);
5303 elf_section_data (isec)->relocs = internal_relocs;
5310 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5312 if (contents != NULL
5313 && elf_section_data (isec)->this_hdr.contents != contents)
5315 if (internal_relocs != NULL
5316 && elf_section_data (isec)->relocs != internal_relocs)
5317 free (internal_relocs);
5321 /* What to do when ld finds relocations against symbols defined in
5322 discarded sections. */
5325 ppc_elf_action_discarded (asection *sec)
5327 if (strcmp (".fixup", sec->name) == 0)
5330 if (strcmp (".got2", sec->name) == 0)
5333 return _bfd_elf_default_action_discarded (sec);
5336 /* Fill in the address for a pointer generated in a linker section. */
5339 elf_finish_pointer_linker_section (bfd *input_bfd,
5340 elf_linker_section_t *lsect,
5341 struct elf_link_hash_entry *h,
5343 const Elf_Internal_Rela *rel)
5345 elf_linker_section_pointers_t *linker_section_ptr;
5347 BFD_ASSERT (lsect != NULL);
5351 /* Handle global symbol. */
5352 struct ppc_elf_link_hash_entry *eh;
5354 eh = (struct ppc_elf_link_hash_entry *) h;
5355 BFD_ASSERT (eh->elf.def_regular);
5356 linker_section_ptr = eh->linker_section_pointer;
5360 /* Handle local symbol. */
5361 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5363 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5364 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5367 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5370 BFD_ASSERT (linker_section_ptr != NULL);
5372 /* Offset will always be a multiple of four, so use the bottom bit
5373 as a "written" flag. */
5374 if ((linker_section_ptr->offset & 1) == 0)
5376 bfd_put_32 (lsect->section->owner,
5377 relocation + linker_section_ptr->addend,
5378 lsect->section->contents + linker_section_ptr->offset);
5379 linker_section_ptr->offset += 1;
5382 relocation = (lsect->section->output_offset
5383 + linker_section_ptr->offset - 1
5388 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5389 lsect->name, (long) relocation, (long) relocation);
5392 /* Subtract out the addend, because it will get added back in by the normal
5394 return relocation - linker_section_ptr->addend;
5397 /* The RELOCATE_SECTION function is called by the ELF backend linker
5398 to handle the relocations for a section.
5400 The relocs are always passed as Rela structures; if the section
5401 actually uses Rel structures, the r_addend field will always be
5404 This function is responsible for adjust the section contents as
5405 necessary, and (if using Rela relocs and generating a
5406 relocatable output file) adjusting the reloc addend as
5409 This function does not have to worry about setting the reloc
5410 address or the reloc symbol index.
5412 LOCAL_SYMS is a pointer to the swapped in local symbols.
5414 LOCAL_SECTIONS is an array giving the section in the input file
5415 corresponding to the st_shndx field of each local symbol.
5417 The global hash table entry for the global symbols can be found
5418 via elf_sym_hashes (input_bfd).
5420 When generating relocatable output, this function must handle
5421 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5422 going to be the section symbol corresponding to the output
5423 section, which means that the addend must be adjusted
5427 ppc_elf_relocate_section (bfd *output_bfd,
5428 struct bfd_link_info *info,
5430 asection *input_section,
5432 Elf_Internal_Rela *relocs,
5433 Elf_Internal_Sym *local_syms,
5434 asection **local_sections)
5436 Elf_Internal_Shdr *symtab_hdr;
5437 struct elf_link_hash_entry **sym_hashes;
5438 struct ppc_elf_link_hash_table *htab;
5439 Elf_Internal_Rela *rel;
5440 Elf_Internal_Rela *relend;
5441 Elf_Internal_Rela outrel;
5443 asection *got2, *sreloc = NULL;
5444 bfd_vma *local_got_offsets;
5445 bfd_boolean ret = TRUE;
5448 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5449 "%ld relocations%s",
5450 input_bfd, input_section,
5451 (long) input_section->reloc_count,
5452 (info->relocatable) ? " (relocatable)" : "");
5455 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5457 if (info->relocatable)
5463 relend = relocs + input_section->reloc_count;
5464 for (; rel < relend; rel++)
5466 enum elf_ppc_reloc_type r_type;
5468 r_type = ELF32_R_TYPE (rel->r_info);
5469 if (r_type == R_PPC_PLTREL24
5470 && rel->r_addend >= 32768)
5472 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5473 addend specifies the GOT pointer offset within .got2. */
5474 rel->r_addend += got2->output_offset;
5480 /* Initialize howto table if not already done. */
5481 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5482 ppc_elf_howto_init ();
5484 htab = ppc_elf_hash_table (info);
5485 local_got_offsets = elf_local_got_offsets (input_bfd);
5486 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5487 sym_hashes = elf_sym_hashes (input_bfd);
5489 relend = relocs + input_section->reloc_count;
5490 for (; rel < relend; rel++)
5492 enum elf_ppc_reloc_type r_type;
5494 bfd_reloc_status_type r;
5495 Elf_Internal_Sym *sym;
5497 struct elf_link_hash_entry *h;
5498 const char *sym_name;
5499 reloc_howto_type *howto;
5500 unsigned long r_symndx;
5502 bfd_vma branch_bit, insn, from;
5503 bfd_boolean unresolved_reloc;
5505 unsigned int tls_type, tls_mask, tls_gd;
5507 r_type = ELF32_R_TYPE (rel->r_info);
5511 unresolved_reloc = FALSE;
5513 r_symndx = ELF32_R_SYM (rel->r_info);
5515 if (r_symndx < symtab_hdr->sh_info)
5517 sym = local_syms + r_symndx;
5518 sec = local_sections[r_symndx];
5519 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5521 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5525 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5526 r_symndx, symtab_hdr, sym_hashes,
5528 unresolved_reloc, warned);
5530 sym_name = h->root.root.string;
5533 /* TLS optimizations. Replace instruction sequences and relocs
5534 based on information we collected in tls_optimize. We edit
5535 RELOCS so that --emit-relocs will output something sensible
5536 for the final instruction stream. */
5539 if (IS_PPC_TLS_RELOC (r_type))
5542 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5543 else if (local_got_offsets != NULL)
5546 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5547 tls_mask = lgot_masks[r_symndx];
5551 /* Ensure reloc mapping code below stays sane. */
5552 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5553 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5554 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5555 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5556 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5557 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5558 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5559 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5566 case R_PPC_GOT_TPREL16:
5567 case R_PPC_GOT_TPREL16_LO:
5569 && (tls_mask & TLS_TPREL) == 0)
5572 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5574 insn |= 0x3c020000; /* addis 0,2,0 */
5575 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5576 r_type = R_PPC_TPREL16_HA;
5577 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5583 && (tls_mask & TLS_TPREL) == 0)
5586 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5587 if ((insn & ((31 << 26) | (31 << 11)))
5588 == ((31 << 26) | (2 << 11)))
5589 rtra = insn & ((1 << 26) - (1 << 16));
5590 else if ((insn & ((31 << 26) | (31 << 16)))
5591 == ((31 << 26) | (2 << 16)))
5592 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5595 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5598 else if ((insn & (31 << 1)) == 23 << 1
5599 && ((insn & (31 << 6)) < 14 << 6
5600 || ((insn & (31 << 6)) >= 16 << 6
5601 && (insn & (31 << 6)) < 24 << 6)))
5602 /* load and store indexed -> dform. */
5603 insn = (32 | ((insn >> 6) & 31)) << 26;
5604 else if ((insn & (31 << 1)) == 21 << 1
5605 && (insn & (0x1a << 6)) == 0)
5606 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5607 insn = (((58 | ((insn >> 6) & 4)) << 26)
5608 | ((insn >> 6) & 1));
5609 else if ((insn & (31 << 1)) == 21 << 1
5610 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5612 insn = (58 << 26) | 2;
5616 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5617 r_type = R_PPC_TPREL16_LO;
5618 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5619 /* Was PPC_TLS which sits on insn boundary, now
5620 PPC_TPREL16_LO which is at insn+2. */
5625 case R_PPC_GOT_TLSGD16_HI:
5626 case R_PPC_GOT_TLSGD16_HA:
5627 tls_gd = TLS_TPRELGD;
5628 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5632 case R_PPC_GOT_TLSLD16_HI:
5633 case R_PPC_GOT_TLSLD16_HA:
5634 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5637 if ((tls_mask & tls_gd) != 0)
5638 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5639 + R_PPC_GOT_TPREL16);
5642 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5644 r_type = R_PPC_NONE;
5646 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5650 case R_PPC_GOT_TLSGD16:
5651 case R_PPC_GOT_TLSGD16_LO:
5652 tls_gd = TLS_TPRELGD;
5653 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5654 goto tls_get_addr_check;
5657 case R_PPC_GOT_TLSLD16:
5658 case R_PPC_GOT_TLSLD16_LO:
5659 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5662 if (rel + 1 < relend)
5664 enum elf_ppc_reloc_type r_type2;
5665 unsigned long r_symndx2;
5666 struct elf_link_hash_entry *h2;
5667 bfd_vma insn1, insn2;
5670 /* The next instruction should be a call to
5671 __tls_get_addr. Peek at the reloc to be sure. */
5672 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5673 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5674 if (r_symndx2 < symtab_hdr->sh_info
5675 || (r_type2 != R_PPC_REL14
5676 && r_type2 != R_PPC_REL14_BRTAKEN
5677 && r_type2 != R_PPC_REL14_BRNTAKEN
5678 && r_type2 != R_PPC_REL24
5679 && r_type2 != R_PPC_PLTREL24))
5682 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5683 while (h2->root.type == bfd_link_hash_indirect
5684 || h2->root.type == bfd_link_hash_warning)
5685 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5686 if (h2 == NULL || h2 != htab->tls_get_addr)
5689 /* OK, it checks out. Replace the call. */
5690 offset = rel[1].r_offset;
5691 insn1 = bfd_get_32 (output_bfd,
5692 contents + rel->r_offset - 2);
5693 if ((tls_mask & tls_gd) != 0)
5696 insn1 &= (1 << 26) - 1;
5697 insn1 |= 32 << 26; /* lwz */
5698 insn2 = 0x7c631214; /* add 3,3,2 */
5699 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5700 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5701 + R_PPC_GOT_TPREL16);
5702 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5707 insn1 = 0x3c620000; /* addis 3,2,0 */
5708 insn2 = 0x38630000; /* addi 3,3,0 */
5711 /* Was an LD reloc. */
5713 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5714 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5716 r_type = R_PPC_TPREL16_HA;
5717 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5718 rel[1].r_info = ELF32_R_INFO (r_symndx,
5720 rel[1].r_offset += 2;
5722 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5723 bfd_put_32 (output_bfd, insn2, contents + offset);
5726 /* We changed the symbol on an LD reloc. Start over
5727 in order to get h, sym, sec etc. right. */
5736 /* Handle other relocations that tweak non-addend part of insn. */
5743 /* Branch taken prediction relocations. */
5744 case R_PPC_ADDR14_BRTAKEN:
5745 case R_PPC_REL14_BRTAKEN:
5746 branch_bit = BRANCH_PREDICT_BIT;
5749 /* Branch not taken prediction relocations. */
5750 case R_PPC_ADDR14_BRNTAKEN:
5751 case R_PPC_REL14_BRNTAKEN:
5752 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5753 insn &= ~BRANCH_PREDICT_BIT;
5756 from = (rel->r_offset
5757 + input_section->output_offset
5758 + input_section->output_section->vma);
5760 /* Invert 'y' bit if not the default. */
5761 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5762 insn ^= BRANCH_PREDICT_BIT;
5764 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5768 addend = rel->r_addend;
5771 if (r_type < R_PPC_max)
5772 howto = ppc_elf_howto_table[r_type];
5776 (*_bfd_error_handler)
5777 (_("%B: unknown relocation type %d for symbol %s"),
5778 input_bfd, (int) r_type, sym_name);
5780 bfd_set_error (bfd_error_bad_value);
5786 case R_PPC_EMB_MRKREF:
5787 case R_PPC_GNU_VTINHERIT:
5788 case R_PPC_GNU_VTENTRY:
5791 /* GOT16 relocations. Like an ADDR16 using the symbol's
5792 address in the GOT as relocation value instead of the
5793 symbol's value itself. Also, create a GOT entry for the
5794 symbol and put the symbol value there. */
5795 case R_PPC_GOT_TLSGD16:
5796 case R_PPC_GOT_TLSGD16_LO:
5797 case R_PPC_GOT_TLSGD16_HI:
5798 case R_PPC_GOT_TLSGD16_HA:
5799 tls_type = TLS_TLS | TLS_GD;
5802 case R_PPC_GOT_TLSLD16:
5803 case R_PPC_GOT_TLSLD16_LO:
5804 case R_PPC_GOT_TLSLD16_HI:
5805 case R_PPC_GOT_TLSLD16_HA:
5806 tls_type = TLS_TLS | TLS_LD;
5809 case R_PPC_GOT_TPREL16:
5810 case R_PPC_GOT_TPREL16_LO:
5811 case R_PPC_GOT_TPREL16_HI:
5812 case R_PPC_GOT_TPREL16_HA:
5813 tls_type = TLS_TLS | TLS_TPREL;
5816 case R_PPC_GOT_DTPREL16:
5817 case R_PPC_GOT_DTPREL16_LO:
5818 case R_PPC_GOT_DTPREL16_HI:
5819 case R_PPC_GOT_DTPREL16_HA:
5820 tls_type = TLS_TLS | TLS_DTPREL;
5824 case R_PPC_GOT16_LO:
5825 case R_PPC_GOT16_HI:
5826 case R_PPC_GOT16_HA:
5829 /* Relocation is to the entry for this symbol in the global
5835 if (htab->got == NULL)
5839 if (tls_type == (TLS_TLS | TLS_LD)
5841 || !h->def_dynamic))
5842 offp = &htab->tlsld_got.offset;
5846 dyn = htab->elf.dynamic_sections_created;
5847 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5849 && SYMBOL_REFERENCES_LOCAL (info, h)))
5850 /* This is actually a static link, or it is a
5851 -Bsymbolic link and the symbol is defined
5852 locally, or the symbol was forced to be local
5853 because of a version file. */
5858 unresolved_reloc = FALSE;
5860 offp = &h->got.offset;
5864 if (local_got_offsets == NULL)
5866 offp = &local_got_offsets[r_symndx];
5869 /* The offset must always be a multiple of 4. We use the
5870 least significant bit to record whether we have already
5871 processed this entry. */
5877 unsigned int tls_m = (tls_mask
5878 & (TLS_LD | TLS_GD | TLS_DTPREL
5879 | TLS_TPREL | TLS_TPRELGD));
5881 if (offp == &htab->tlsld_got.offset)
5887 /* We might have multiple got entries for this sym.
5888 Initialize them all. */
5893 if ((tls_m & TLS_LD) != 0)
5895 tls_ty = TLS_TLS | TLS_LD;
5898 else if ((tls_m & TLS_GD) != 0)
5900 tls_ty = TLS_TLS | TLS_GD;
5903 else if ((tls_m & TLS_DTPREL) != 0)
5905 tls_ty = TLS_TLS | TLS_DTPREL;
5906 tls_m &= ~TLS_DTPREL;
5908 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5910 tls_ty = TLS_TLS | TLS_TPREL;
5914 /* Generate relocs for the dynamic linker. */
5915 if ((info->shared || indx != 0)
5917 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5918 || h->root.type != bfd_link_hash_undefweak))
5920 outrel.r_offset = (htab->got->output_section->vma
5921 + htab->got->output_offset
5923 outrel.r_addend = 0;
5924 if (tls_ty & (TLS_LD | TLS_GD))
5926 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5927 if (tls_ty == (TLS_TLS | TLS_GD))
5929 loc = htab->relgot->contents;
5930 loc += (htab->relgot->reloc_count++
5931 * sizeof (Elf32_External_Rela));
5932 bfd_elf32_swap_reloca_out (output_bfd,
5934 outrel.r_offset += 4;
5936 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5939 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5940 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5941 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5942 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5944 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5946 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5949 outrel.r_addend += relocation;
5950 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5951 outrel.r_addend -= htab->elf.tls_sec->vma;
5953 loc = htab->relgot->contents;
5954 loc += (htab->relgot->reloc_count++
5955 * sizeof (Elf32_External_Rela));
5956 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5959 /* Init the .got section contents if we're not
5960 emitting a reloc. */
5963 bfd_vma value = relocation;
5965 if (tls_ty == (TLS_TLS | TLS_LD))
5967 else if (tls_ty != 0)
5969 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5970 if (tls_ty == (TLS_TLS | TLS_TPREL))
5971 value += DTP_OFFSET - TP_OFFSET;
5973 if (tls_ty == (TLS_TLS | TLS_GD))
5975 bfd_put_32 (output_bfd, value,
5976 htab->got->contents + off + 4);
5980 bfd_put_32 (output_bfd, value,
5981 htab->got->contents + off);
5985 if (tls_ty & (TLS_LD | TLS_GD))
5994 if (off >= (bfd_vma) -2)
5997 if ((tls_type & TLS_TLS) != 0)
5999 if (tls_type != (TLS_TLS | TLS_LD))
6001 if ((tls_mask & TLS_LD) != 0
6003 || !h->def_dynamic))
6005 if (tls_type != (TLS_TLS | TLS_GD))
6007 if ((tls_mask & TLS_GD) != 0)
6009 if (tls_type != (TLS_TLS | TLS_DTPREL))
6011 if ((tls_mask & TLS_DTPREL) != 0)
6018 relocation = htab->got->output_offset + off;
6019 relocation -= htab->elf.hgot->root.u.def.value;
6021 /* Addends on got relocations don't make much sense.
6022 x+off@got is actually x@got+off, and since the got is
6023 generated by a hash table traversal, the value in the
6024 got at entry m+n bears little relation to the entry m. */
6026 (*_bfd_error_handler)
6027 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6030 (long) rel->r_offset,
6036 /* Relocations that need no special processing. */
6037 case R_PPC_LOCAL24PC:
6038 /* It makes no sense to point a local relocation
6039 at a symbol not in this object. */
6040 if (unresolved_reloc)
6042 if (! (*info->callbacks->undefined_symbol) (info,
6043 h->root.root.string,
6053 case R_PPC_DTPREL16:
6054 case R_PPC_DTPREL16_LO:
6055 case R_PPC_DTPREL16_HI:
6056 case R_PPC_DTPREL16_HA:
6057 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6060 /* Relocations that may need to be propagated if this is a shared
6063 case R_PPC_TPREL16_LO:
6064 case R_PPC_TPREL16_HI:
6065 case R_PPC_TPREL16_HA:
6066 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6067 /* The TPREL16 relocs shouldn't really be used in shared
6068 libs as they will result in DT_TEXTREL being set, but
6069 support them anyway. */
6073 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6076 case R_PPC_DTPREL32:
6077 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6080 case R_PPC_DTPMOD32:
6086 case R_PPC_REL16_LO:
6087 case R_PPC_REL16_HI:
6088 case R_PPC_REL16_HA:
6094 case R_PPC_REL14_BRTAKEN:
6095 case R_PPC_REL14_BRNTAKEN:
6096 /* If these relocations are not to a named symbol, they can be
6097 handled right here, no need to bother the dynamic linker. */
6098 if (SYMBOL_REFERENCES_LOCAL (info, h)
6099 || h == htab->elf.hgot)
6103 /* Relocations that always need to be propagated if this is a shared
6108 case R_PPC_ADDR16_LO:
6109 case R_PPC_ADDR16_HI:
6110 case R_PPC_ADDR16_HA:
6112 case R_PPC_ADDR14_BRTAKEN:
6113 case R_PPC_ADDR14_BRNTAKEN:
6116 /* r_symndx will be zero only for relocs against symbols
6117 from removed linkonce sections, or sections discarded by
6124 if ((input_section->flags & SEC_ALLOC) == 0)
6130 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6131 || h->root.type != bfd_link_hash_undefweak)
6132 && (MUST_BE_DYN_RELOC (r_type)
6133 || !SYMBOL_CALLS_LOCAL (info, h)))
6134 || (ELIMINATE_COPY_RELOCS
6140 && !h->def_regular))
6145 fprintf (stderr, "ppc_elf_relocate_section needs to "
6146 "create relocation for %s\n",
6147 (h && h->root.root.string
6148 ? h->root.root.string : "<unknown>"));
6151 /* When generating a shared object, these relocations
6152 are copied into the output file to be resolved at run
6158 name = (bfd_elf_string_from_elf_section
6160 elf_elfheader (input_bfd)->e_shstrndx,
6161 elf_section_data (input_section)->rel_hdr.sh_name));
6165 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6166 && strcmp (bfd_get_section_name (input_bfd,
6170 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6171 BFD_ASSERT (sreloc != NULL);
6177 _bfd_elf_section_offset (output_bfd, info, input_section,
6179 if (outrel.r_offset == (bfd_vma) -1
6180 || outrel.r_offset == (bfd_vma) -2)
6181 skip = (int) outrel.r_offset;
6182 outrel.r_offset += (input_section->output_section->vma
6183 + input_section->output_offset);
6186 memset (&outrel, 0, sizeof outrel);
6187 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6189 unresolved_reloc = FALSE;
6190 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6191 outrel.r_addend = rel->r_addend;
6195 outrel.r_addend = relocation + rel->r_addend;
6197 if (r_type == R_PPC_ADDR32)
6198 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6203 if (bfd_is_abs_section (sec))
6205 else if (sec == NULL || sec->owner == NULL)
6207 bfd_set_error (bfd_error_bad_value);
6214 /* We are turning this relocation into one
6215 against a section symbol. It would be
6216 proper to subtract the symbol's value,
6217 osec->vma, from the emitted reloc addend,
6218 but ld.so expects buggy relocs. */
6219 osec = sec->output_section;
6220 indx = elf_section_data (osec)->dynindx;
6221 BFD_ASSERT (indx > 0);
6224 printf ("indx=%d section=%s flags=%08x name=%s\n",
6225 indx, osec->name, osec->flags,
6226 h->root.root.string);
6230 outrel.r_info = ELF32_R_INFO (indx, r_type);
6234 loc = sreloc->contents;
6235 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6236 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6241 /* This reloc will be computed at runtime. We clear the memory
6242 so that it contains predictable value. */
6244 && ((input_section->flags & SEC_ALLOC) != 0
6245 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6247 relocation = howto->pc_relative ? outrel.r_offset : 0;
6254 case R_PPC_RELAX32PC_PLT:
6255 case R_PPC_RELAX32_PLT:
6257 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6260 relocation = (htab->glink->output_section->vma
6261 + htab->glink->output_offset
6262 + ent->glink_offset);
6264 relocation = (htab->plt->output_section->vma
6265 + htab->plt->output_offset
6269 if (r_type == R_PPC_RELAX32_PLT)
6273 case R_PPC_RELAX32PC:
6274 relocation -= (input_section->output_section->vma
6275 + input_section->output_offset
6276 + rel->r_offset - 4);
6285 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6286 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6288 /* We're clearing the bits for R_PPC_ADDR16_HA
6289 and R_PPC_ADDR16_LO here. */
6293 /* t0 is HA, t1 is LO */
6294 relocation += addend;
6295 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6296 t1 |= relocation & 0xffff;
6298 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6299 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6303 /* Indirect .sdata relocation. */
6304 case R_PPC_EMB_SDAI16:
6305 BFD_ASSERT (htab->sdata[0].section != NULL);
6307 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6308 h, relocation, rel);
6311 /* Indirect .sdata2 relocation. */
6312 case R_PPC_EMB_SDA2I16:
6313 BFD_ASSERT (htab->sdata[1].section != NULL);
6315 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6316 h, relocation, rel);
6319 /* Handle the TOC16 reloc. We want to use the offset within the .got
6320 section, not the actual VMA. This is appropriate when generating
6321 an embedded ELF object, for which the .got section acts like the
6322 AIX .toc section. */
6323 case R_PPC_TOC16: /* phony GOT16 relocations */
6324 BFD_ASSERT (sec != NULL);
6325 BFD_ASSERT (bfd_is_und_section (sec)
6326 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6327 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6329 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6332 case R_PPC_PLTREL24:
6333 /* Relocation is to the entry for this symbol in the
6334 procedure linkage table. */
6336 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6340 || htab->plt == NULL)
6342 /* We didn't make a PLT entry for this symbol. This
6343 happens when statically linking PIC code, or when
6344 using -Bsymbolic. */
6348 unresolved_reloc = FALSE;
6350 relocation = (htab->glink->output_section->vma
6351 + htab->glink->output_offset
6352 + ent->glink_offset);
6354 relocation = (htab->plt->output_section->vma
6355 + htab->plt->output_offset
6360 /* Relocate against _SDA_BASE_. */
6361 case R_PPC_SDAREL16:
6364 struct elf_link_hash_entry *sh;
6366 BFD_ASSERT (sec != NULL);
6367 name = bfd_get_section_name (abfd, sec->output_section);
6368 if (! ((strncmp (name, ".sdata", 6) == 0
6369 && (name[6] == 0 || name[6] == '.'))
6370 || (strncmp (name, ".sbss", 5) == 0
6371 && (name[5] == 0 || name[5] == '.'))))
6373 (*_bfd_error_handler)
6374 (_("%B: the target (%s) of a %s relocation is "
6375 "in the wrong output section (%s)"),
6381 sh = htab->sdata[0].sym;
6382 addend -= (sh->root.u.def.value
6383 + sh->root.u.def.section->output_offset
6384 + sh->root.u.def.section->output_section->vma);
6388 /* Relocate against _SDA2_BASE_. */
6389 case R_PPC_EMB_SDA2REL:
6392 struct elf_link_hash_entry *sh;
6394 BFD_ASSERT (sec != NULL);
6395 name = bfd_get_section_name (abfd, sec->output_section);
6396 if (! (strncmp (name, ".sdata2", 7) == 0
6397 || strncmp (name, ".sbss2", 6) == 0))
6399 (*_bfd_error_handler)
6400 (_("%B: the target (%s) of a %s relocation is "
6401 "in the wrong output section (%s)"),
6407 bfd_set_error (bfd_error_bad_value);
6411 sh = htab->sdata[1].sym;
6412 addend -= (sh->root.u.def.value
6413 + sh->root.u.def.section->output_offset
6414 + sh->root.u.def.section->output_section->vma);
6418 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6419 case R_PPC_EMB_SDA21:
6420 case R_PPC_EMB_RELSDA:
6424 struct elf_link_hash_entry *sh;
6426 BFD_ASSERT (sec != NULL);
6427 name = bfd_get_section_name (abfd, sec->output_section);
6428 if (((strncmp (name, ".sdata", 6) == 0
6429 && (name[6] == 0 || name[6] == '.'))
6430 || (strncmp (name, ".sbss", 5) == 0
6431 && (name[5] == 0 || name[5] == '.'))))
6434 sh = htab->sdata[0].sym;
6435 addend -= (sh->root.u.def.value
6436 + sh->root.u.def.section->output_offset
6437 + sh->root.u.def.section->output_section->vma);
6440 else if (strncmp (name, ".sdata2", 7) == 0
6441 || strncmp (name, ".sbss2", 6) == 0)
6444 sh = htab->sdata[1].sym;
6445 addend -= (sh->root.u.def.value
6446 + sh->root.u.def.section->output_offset
6447 + sh->root.u.def.section->output_section->vma);
6450 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6451 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6458 (*_bfd_error_handler)
6459 (_("%B: the target (%s) of a %s relocation is "
6460 "in the wrong output section (%s)"),
6466 bfd_set_error (bfd_error_bad_value);
6471 if (r_type == R_PPC_EMB_SDA21)
6472 { /* fill in register field */
6473 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6474 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6475 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6480 /* Relocate against the beginning of the section. */
6482 case R_PPC_SECTOFF_LO:
6483 case R_PPC_SECTOFF_HI:
6484 case R_PPC_SECTOFF_HA:
6485 BFD_ASSERT (sec != NULL);
6486 addend -= sec->output_section->vma;
6489 /* Negative relocations. */
6490 case R_PPC_EMB_NADDR32:
6491 case R_PPC_EMB_NADDR16:
6492 case R_PPC_EMB_NADDR16_LO:
6493 case R_PPC_EMB_NADDR16_HI:
6494 case R_PPC_EMB_NADDR16_HA:
6495 addend -= 2 * relocation;
6499 case R_PPC_GLOB_DAT:
6500 case R_PPC_JMP_SLOT:
6501 case R_PPC_RELATIVE:
6503 case R_PPC_PLTREL32:
6504 case R_PPC_PLT16_LO:
6505 case R_PPC_PLT16_HI:
6506 case R_PPC_PLT16_HA:
6508 case R_PPC_EMB_RELSEC16:
6509 case R_PPC_EMB_RELST_LO:
6510 case R_PPC_EMB_RELST_HI:
6511 case R_PPC_EMB_RELST_HA:
6512 case R_PPC_EMB_BIT_FLD:
6513 (*_bfd_error_handler)
6514 (_("%B: relocation %s is not yet supported for symbol %s."),
6519 bfd_set_error (bfd_error_invalid_operation);
6524 /* Do any further special processing. */
6530 case R_PPC_ADDR16_HA:
6531 case R_PPC_REL16_HA:
6532 case R_PPC_GOT16_HA:
6533 case R_PPC_PLT16_HA:
6534 case R_PPC_SECTOFF_HA:
6535 case R_PPC_TPREL16_HA:
6536 case R_PPC_DTPREL16_HA:
6537 case R_PPC_GOT_TLSGD16_HA:
6538 case R_PPC_GOT_TLSLD16_HA:
6539 case R_PPC_GOT_TPREL16_HA:
6540 case R_PPC_GOT_DTPREL16_HA:
6541 case R_PPC_EMB_NADDR16_HA:
6542 case R_PPC_EMB_RELST_HA:
6543 /* It's just possible that this symbol is a weak symbol
6544 that's not actually defined anywhere. In that case,
6545 'sec' would be NULL, and we should leave the symbol
6546 alone (it will be set to zero elsewhere in the link). */
6548 /* Add 0x10000 if sign bit in 0:15 is set.
6549 Bits 0:15 are not used. */
6555 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6556 "offset = %ld, addend = %ld\n",
6561 (long) rel->r_offset,
6565 if (unresolved_reloc
6566 && !((input_section->flags & SEC_DEBUGGING) != 0
6569 (*_bfd_error_handler)
6570 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6573 (long) rel->r_offset,
6579 r = _bfd_final_link_relocate (howto,
6587 if (r != bfd_reloc_ok)
6589 if (r == bfd_reloc_overflow)
6594 && h->root.type == bfd_link_hash_undefweak
6595 && howto->pc_relative)
6597 /* Assume this is a call protected by other code that
6598 detect the symbol is undefined. If this is the case,
6599 we can safely ignore the overflow. If not, the
6600 program is hosed anyway, and a little warning isn't
6606 if (! (*info->callbacks->reloc_overflow) (info,
6607 (h ? &h->root : NULL),
6618 (*_bfd_error_handler)
6619 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6620 input_bfd, input_section,
6621 (long) rel->r_offset, howto->name, sym_name, (int) r);
6628 fprintf (stderr, "\n");
6634 #define PPC_LO(v) ((v) & 0xffff)
6635 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6636 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6638 /* Finish up dynamic symbol handling. We set the contents of various
6639 dynamic sections here. */
6642 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6643 struct bfd_link_info *info,
6644 struct elf_link_hash_entry *h,
6645 Elf_Internal_Sym *sym)
6647 struct ppc_elf_link_hash_table *htab;
6648 struct plt_entry *ent;
6649 bfd_boolean doneone;
6652 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6653 h->root.root.string);
6656 htab = ppc_elf_hash_table (info);
6657 BFD_ASSERT (htab->elf.dynobj != NULL);
6660 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6661 if (ent->plt.offset != (bfd_vma) -1)
6665 Elf_Internal_Rela rela;
6667 bfd_vma reloc_index;
6669 if (!(htab->old_plt || htab->is_vxworks))
6670 reloc_index = ent->plt.offset / 4;
6673 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6674 / htab->plt_slot_size);
6675 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6676 && !htab->is_vxworks)
6677 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6680 /* This symbol has an entry in the procedure linkage table.
6682 if (htab->is_vxworks)
6685 const bfd_vma *plt_entry;
6687 /* The first three entries in .got.plt are reserved. */
6688 got_offset = (reloc_index + 3) * 4;
6690 /* Use the right PLT. */
6691 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6692 : ppc_elf_vxworks_plt_entry;
6694 /* Fill in the .plt on VxWorks. */
6697 bfd_vma got_offset_hi = (got_offset >> 16)
6698 + ((got_offset & 0x8000) >> 15);
6700 bfd_put_32 (output_bfd,
6701 plt_entry[0] | (got_offset_hi & 0xffff),
6702 htab->plt->contents + ent->plt.offset + 0);
6703 bfd_put_32 (output_bfd,
6704 plt_entry[1] | (got_offset & 0xffff),
6705 htab->plt->contents + ent->plt.offset + 4);
6711 + htab->elf.hgot->root.u.def.value
6712 + htab->elf.hgot->root.u.def.section->output_offset
6713 + htab->elf.hgot->root.u.def.section->output_section->vma);
6714 bfd_vma got_loc_hi = (got_loc >> 16)
6715 + ((got_loc & 0x8000) >> 15);
6717 bfd_put_32 (output_bfd,
6718 plt_entry[0] | (got_loc_hi & 0xffff),
6719 htab->plt->contents + ent->plt.offset + 0);
6720 bfd_put_32 (output_bfd,
6721 plt_entry[1] | (got_loc & 0xffff),
6722 htab->plt->contents + ent->plt.offset + 4);
6725 bfd_put_32 (output_bfd, plt_entry[2],
6726 htab->plt->contents + ent->plt.offset + 8);
6727 bfd_put_32 (output_bfd, plt_entry[3],
6728 htab->plt->contents + ent->plt.offset + 12);
6730 /* This instruction is an immediate load. The value loaded is
6731 the byte offset of the R_PPC_JMP_SLOT relocation from the
6732 start of the .rela.plt section. The value is stored in the
6733 low-order 16 bits of the load instruction. */
6734 /* NOTE: It appears that this is now an index rather than a
6735 prescaled offset. */
6736 bfd_put_32 (output_bfd,
6737 plt_entry[4] | reloc_index,
6738 htab->plt->contents + ent->plt.offset + 16);
6739 /* This instruction is a PC-relative branch whose target is
6740 the start of the PLT section. The address of this branch
6741 instruction is 20 bytes beyond the start of this PLT entry.
6742 The address is encoded in bits 6-29, inclusive. The value
6743 stored is right-shifted by two bits, permitting a 26-bit
6745 bfd_put_32 (output_bfd,
6747 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6748 htab->plt->contents + ent->plt.offset + 20);
6749 bfd_put_32 (output_bfd, plt_entry[6],
6750 htab->plt->contents + ent->plt.offset + 24);
6751 bfd_put_32 (output_bfd, plt_entry[7],
6752 htab->plt->contents + ent->plt.offset + 28);
6754 /* Fill in the GOT entry corresponding to this PLT slot with
6755 the address immediately after the the "bctr" instruction
6756 in this PLT entry. */
6757 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6758 + htab->plt->output_offset
6759 + ent->plt.offset + 16),
6760 htab->sgotplt->contents + got_offset);
6764 /* Fill in a couple of entries in .rela.plt.unloaded. */
6765 loc = htab->srelplt2->contents
6766 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6767 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6768 * sizeof (Elf32_External_Rela));
6770 /* Provide the @ha relocation for the first instruction. */
6771 rela.r_offset = (htab->plt->output_section->vma
6772 + htab->plt->output_offset
6773 + ent->plt.offset + 2);
6774 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6776 rela.r_addend = got_offset;
6777 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6778 loc += sizeof (Elf32_External_Rela);
6780 /* Provide the @l relocation for the second instruction. */
6781 rela.r_offset = (htab->plt->output_section->vma
6782 + htab->plt->output_offset
6783 + ent->plt.offset + 6);
6784 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6786 rela.r_addend = got_offset;
6787 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6788 loc += sizeof (Elf32_External_Rela);
6790 /* Provide a relocation for the GOT entry corresponding to this
6791 PLT slot. Point it at the middle of the .plt entry. */
6792 rela.r_offset = (htab->sgotplt->output_section->vma
6793 + htab->sgotplt->output_offset
6795 rela.r_info = ELF32_R_INFO (htab->hplt->indx,
6797 rela.r_addend = ent->plt.offset + 16;
6798 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6801 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6802 In particular, the offset for the relocation is not the
6803 address of the PLT entry for this function, as specified
6804 by the ABI. Instead, the offset is set to the address of
6805 the GOT slot for this function. See EABI 4.4.4.1. */
6806 rela.r_offset = (htab->sgotplt->output_section->vma
6807 + htab->sgotplt->output_offset
6813 rela.r_offset = (htab->plt->output_section->vma
6814 + htab->plt->output_offset
6818 /* We don't need to fill in the .plt. The ppc dynamic
6819 linker will fill it in. */
6823 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6824 + htab->glink->output_section->vma
6825 + htab->glink->output_offset);
6826 bfd_put_32 (output_bfd, val,
6827 htab->plt->contents + ent->plt.offset);
6831 /* Fill in the entry in the .rela.plt section. */
6832 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6835 loc = (htab->relplt->contents
6836 + reloc_index * sizeof (Elf32_External_Rela));
6837 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6839 if (!h->def_regular)
6841 /* Mark the symbol as undefined, rather than as defined in
6842 the .plt section. Leave the value alone. */
6843 sym->st_shndx = SHN_UNDEF;
6844 /* If the symbol is weak, we do need to clear the value.
6845 Otherwise, the PLT entry would provide a definition for
6846 the symbol even if the symbol wasn't defined anywhere,
6847 and so the symbol would never be NULL. */
6848 if (!h->ref_regular_nonweak)
6859 plt = (ent->plt.offset
6860 + htab->plt->output_section->vma
6861 + htab->plt->output_offset);
6862 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6864 if (info->shared || info->pie)
6868 if (ent->addend >= 32768)
6870 + ent->sec->output_section->vma
6871 + ent->sec->output_offset);
6872 else if (htab->elf.hgot != NULL)
6873 got = (htab->elf.hgot->root.u.def.value
6874 + htab->elf.hgot->root.u.def.section->output_section->vma
6875 + htab->elf.hgot->root.u.def.section->output_offset);
6879 if (plt + 0x8000 < 0x10000)
6881 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6883 bfd_put_32 (output_bfd, MTCTR_11, p);
6885 bfd_put_32 (output_bfd, BCTR, p);
6887 bfd_put_32 (output_bfd, NOP, p);
6892 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6894 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6896 bfd_put_32 (output_bfd, MTCTR_11, p);
6898 bfd_put_32 (output_bfd, BCTR, p);
6904 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6906 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6908 bfd_put_32 (output_bfd, MTCTR_11, p);
6910 bfd_put_32 (output_bfd, BCTR, p);
6913 /* We only need one non-PIC glink stub. */
6924 Elf_Internal_Rela rela;
6927 /* This symbols needs a copy reloc. Set it up. */
6930 fprintf (stderr, ", copy");
6933 BFD_ASSERT (h->dynindx != -1);
6935 if (ppc_elf_hash_entry (h)->has_sda_refs)
6939 BFD_ASSERT (s != NULL);
6941 rela.r_offset = (h->root.u.def.value
6942 + h->root.u.def.section->output_section->vma
6943 + h->root.u.def.section->output_offset);
6944 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6946 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6947 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6951 fprintf (stderr, "\n");
6954 /* Mark some specially defined symbols as absolute. */
6955 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6956 || (!htab->is_vxworks
6957 && (h == htab->elf.hgot
6958 || strcmp (h->root.root.string,
6959 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
6960 sym->st_shndx = SHN_ABS;
6965 static enum elf_reloc_type_class
6966 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6968 switch (ELF32_R_TYPE (rela->r_info))
6970 case R_PPC_RELATIVE:
6971 return reloc_class_relative;
6974 case R_PPC_JMP_SLOT:
6975 return reloc_class_plt;
6977 return reloc_class_copy;
6979 return reloc_class_normal;
6983 /* Finish up the dynamic sections. */
6986 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6987 struct bfd_link_info *info)
6991 struct ppc_elf_link_hash_table *htab;
6996 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6999 htab = ppc_elf_hash_table (info);
7000 dynobj = elf_hash_table (info)->dynobj;
7001 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7002 if (htab->is_vxworks)
7003 splt = bfd_get_section_by_name (dynobj, ".plt");
7008 if (htab->elf.hgot != NULL)
7009 got = (htab->elf.hgot->root.u.def.value
7010 + htab->elf.hgot->root.u.def.section->output_section->vma
7011 + htab->elf.hgot->root.u.def.section->output_offset);
7013 if (htab->elf.dynamic_sections_created)
7015 Elf32_External_Dyn *dyncon, *dynconend;
7017 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7019 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7020 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7021 for (; dyncon < dynconend; dyncon++)
7023 Elf_Internal_Dyn dyn;
7026 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7031 if (htab->is_vxworks)
7035 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7039 dyn.d_un.d_val = htab->relplt->size;
7044 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7048 dyn.d_un.d_ptr = got;
7052 if (htab->is_vxworks)
7055 dyn.d_un.d_ptr -= htab->relplt->size;
7064 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7068 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7069 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7070 if (htab->got != NULL)
7072 unsigned char *p = htab->got->contents;
7075 p += htab->elf.hgot->root.u.def.value;
7076 if (htab->old_plt && !htab->is_vxworks)
7077 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7081 val = sdyn->output_section->vma + sdyn->output_offset;
7082 bfd_put_32 (output_bfd, val, p);
7084 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7087 /* Fill in the first entry in the VxWorks procedure linkage table. */
7088 if (splt && splt->size > 0)
7090 /* Use the right PLT. */
7091 static const bfd_vma *plt_entry = NULL;
7092 plt_entry = info->shared ?
7093 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7098 (htab->elf.hgot->root.u.def.section->output_section->vma
7099 + htab->elf.hgot->root.u.def.section->output_offset
7100 + htab->elf.hgot->root.u.def.value);
7101 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7103 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7104 splt->contents + 0);
7105 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7106 splt->contents + 4);
7110 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7111 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7113 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7114 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7115 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7116 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7117 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7118 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7122 Elf_Internal_Rela rela;
7125 loc = htab->srelplt2->contents;
7127 /* Output the @ha relocation for the first instruction. */
7128 rela.r_offset = (htab->plt->output_section->vma
7129 + htab->plt->output_offset
7131 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7133 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7134 loc += sizeof (Elf32_External_Rela);
7136 /* Output the @l relocation for the second instruction. */
7137 rela.r_offset = (htab->plt->output_section->vma
7138 + htab->plt->output_offset
7140 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7142 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7143 loc += sizeof (Elf32_External_Rela);
7145 /* Fix up the remaining relocations. They may have the wrong
7146 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7147 in which symbols were output. */
7148 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7150 Elf_Internal_Rela rel;
7152 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7153 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7154 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7155 loc += sizeof (Elf32_External_Rela);
7157 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7158 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7159 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7160 loc += sizeof (Elf32_External_Rela);
7162 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7163 rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_PPC_ADDR32);
7164 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7165 loc += sizeof (Elf32_External_Rela);
7170 if (htab->glink != NULL && htab->glink->contents != NULL)
7173 unsigned char *endp;
7178 * PIC glink code is the following:
7180 * # ith PLT code stub.
7181 * addis 11,30,(plt+(i-1)*4-got)@ha
7182 * lwz 11,(plt+(i-1)*4-got)@l(11)
7186 * # A table of branches, one for each plt entry.
7187 * # The idea is that the plt call stub loads ctr (and r11) with these
7188 * # addresses, so (r11 - res_0) gives the plt index * 4.
7189 * res_0: b PLTresolve
7190 * res_1: b PLTresolve
7192 * # Some number of entries towards the end can be nops
7198 * addis 11,11,(1f-res_0)@ha
7201 * 1: addi 11,11,(1b-res_0)@l
7204 * sub 11,11,12 # r11 = index * 4
7205 * addis 12,12,(got+4-1b)@ha
7206 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7207 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7210 * add 11,0,11 # r11 = index * 12 = reloc offset.
7213 static const unsigned int pic_plt_resolve[] =
7233 static const unsigned int plt_resolve[] =
7253 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7255 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7258 /* Build the branch table, one for each plt entry (less one),
7259 and perhaps some padding. */
7260 p = htab->glink->contents;
7261 p += htab->glink_pltresolve;
7262 endp = htab->glink->contents;
7263 endp += htab->glink->size - GLINK_PLTRESOLVE;
7264 while (p < endp - 8 * 4)
7266 bfd_put_32 (output_bfd, B + endp - p, p);
7271 bfd_put_32 (output_bfd, NOP, p);
7275 res0 = (htab->glink_pltresolve
7276 + htab->glink->output_section->vma
7277 + htab->glink->output_offset);
7279 /* Last comes the PLTresolve stub. */
7280 if (info->shared || info->pie)
7284 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7286 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7289 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7291 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7292 + htab->glink->output_section->vma
7293 + htab->glink->output_offset);
7295 bfd_put_32 (output_bfd,
7296 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7297 bfd_put_32 (output_bfd,
7298 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7299 bfd_put_32 (output_bfd,
7300 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7301 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7303 bfd_put_32 (output_bfd,
7304 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7305 bfd_put_32 (output_bfd,
7306 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7310 bfd_put_32 (output_bfd,
7311 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7312 bfd_put_32 (output_bfd,
7313 LWZ_12_12 + 4, p + 9*4);
7318 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7320 bfd_put_32 (output_bfd, plt_resolve[i], p);
7323 p -= 4 * ARRAY_SIZE (plt_resolve);
7325 bfd_put_32 (output_bfd,
7326 LIS_12 + PPC_HA (got + 4), p + 0*4);
7327 bfd_put_32 (output_bfd,
7328 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7329 bfd_put_32 (output_bfd,
7330 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7331 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7333 bfd_put_32 (output_bfd,
7334 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7335 bfd_put_32 (output_bfd,
7336 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7340 bfd_put_32 (output_bfd,
7341 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7342 bfd_put_32 (output_bfd,
7343 LWZ_12_12 + 4, p + 6*4);
7351 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7352 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7353 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7354 #define TARGET_BIG_NAME "elf32-powerpc"
7355 #define ELF_ARCH bfd_arch_powerpc
7356 #define ELF_MACHINE_CODE EM_PPC
7357 #ifdef __QNXTARGET__
7358 #define ELF_MAXPAGESIZE 0x1000
7360 #define ELF_MAXPAGESIZE 0x10000
7362 #define ELF_MINPAGESIZE 0x1000
7363 #define elf_info_to_howto ppc_elf_info_to_howto
7365 #ifdef EM_CYGNUS_POWERPC
7366 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7370 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7373 #define elf_backend_plt_not_loaded 1
7374 #define elf_backend_can_gc_sections 1
7375 #define elf_backend_can_refcount 1
7376 #define elf_backend_rela_normal 1
7378 #define bfd_elf32_mkobject ppc_elf_mkobject
7379 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7380 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7381 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7382 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7383 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7385 #define elf_backend_object_p ppc_elf_object_p
7386 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7387 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7388 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7389 #define elf_backend_relocate_section ppc_elf_relocate_section
7390 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7391 #define elf_backend_check_relocs ppc_elf_check_relocs
7392 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7393 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7394 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7395 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7396 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7397 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7398 #define elf_backend_fake_sections ppc_elf_fake_sections
7399 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7400 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7401 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7402 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7403 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7404 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7405 #define elf_backend_write_section ppc_elf_write_section
7406 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7407 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7408 #define elf_backend_action_discarded ppc_elf_action_discarded
7410 #include "elf32-target.h"
7412 /* VxWorks Target */
7414 #undef TARGET_LITTLE_SYM
7415 #undef TARGET_LITTLE_NAME
7417 #undef TARGET_BIG_SYM
7418 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7419 #undef TARGET_BIG_NAME
7420 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7422 /* VxWorks uses the elf default section flags for .plt. */
7423 static const struct bfd_elf_special_section *
7424 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7426 if (sec->name == NULL)
7429 if (strcmp (sec->name, ".plt") == 0)
7430 return _bfd_elf_get_sec_type_attr (abfd, sec);
7432 return ppc_elf_get_sec_type_attr (abfd, sec);
7435 /* Like ppc_elf_link_hash_table_create, but overrides
7436 appropriately for VxWorks. */
7437 static struct bfd_link_hash_table *
7438 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7440 struct bfd_link_hash_table *ret;
7442 ret = ppc_elf_link_hash_table_create (abfd);
7445 struct ppc_elf_link_hash_table *htab
7446 = (struct ppc_elf_link_hash_table *)ret;
7447 htab->is_vxworks = 1;
7448 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7449 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7450 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7455 /* Tweak magic VxWorks symbols as they are loaded. */
7457 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7458 struct bfd_link_info *info,
7459 Elf_Internal_Sym *sym,
7460 const char **namep ATTRIBUTE_UNUSED,
7461 flagword *flagsp ATTRIBUTE_UNUSED,
7465 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7469 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7472 /* Tweak magic VxWorks symbols as they are written to the output file. */
7474 elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info
7477 Elf_Internal_Sym *sym,
7478 asection *input_sec ATTRIBUTE_UNUSED,
7479 struct elf_link_hash_entry *h
7482 /* Ignore the first dummy symbol. */
7486 return elf_vxworks_link_output_symbol_hook (name, sym);
7490 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7492 ppc_elf_final_write_processing(abfd, linker);
7493 elf_vxworks_final_write_processing(abfd, linker);
7496 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7498 #undef elf_backend_want_plt_sym
7499 #define elf_backend_want_plt_sym 1
7500 #undef elf_backend_want_got_plt
7501 #define elf_backend_want_got_plt 1
7502 #undef elf_backend_got_symbol_offset
7503 #define elf_backend_got_symbol_offset 0
7504 #undef elf_backend_plt_not_loaded
7505 #define elf_backend_plt_not_loaded 0
7506 #undef elf_backend_plt_readonly
7507 #define elf_backend_plt_readonly 1
7508 #undef elf_backend_got_header_size
7509 #define elf_backend_got_header_size 12
7511 #undef bfd_elf32_bfd_link_hash_table_create
7512 #define bfd_elf32_bfd_link_hash_table_create \
7513 ppc_elf_vxworks_link_hash_table_create
7514 #undef elf_backend_add_symbol_hook
7515 #define elf_backend_add_symbol_hook \
7516 ppc_elf_vxworks_add_symbol_hook
7517 #undef elf_backend_link_output_symbol_hook
7518 #define elf_backend_link_output_symbol_hook \
7519 elf_i386_vxworks_link_output_symbol_hook
7520 #undef elf_backend_final_write_processing
7521 #define elf_backend_final_write_processing \
7522 ppc_elf_vxworks_final_write_processing
7523 #undef elf_backend_get_sec_type_attr
7524 #define elf_backend_get_sec_type_attr \
7525 ppc_elf_vxworks_get_sec_type_attr
7526 #undef elf_backend_emit_relocs
7527 #define elf_backend_emit_relocs \
7528 elf_vxworks_emit_relocs
7531 #define elf32_bed ppc_elf_vxworks_bed
7533 #include "elf32-target.h"
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