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 /* Value of symbol. */
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 *hgot, *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;
2737 /* Create a special linker section. */
2740 ppc_elf_create_linker_section (bfd *abfd,
2741 struct bfd_link_info *info,
2743 elf_linker_section_t *lsect)
2745 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2748 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2749 | SEC_LINKER_CREATED);
2751 /* Record the first bfd that needs the special sections. */
2752 if (!htab->elf.dynobj)
2753 htab->elf.dynobj = abfd;
2755 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2759 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2766 /* Find a linker generated pointer with a given addend and type. */
2768 static elf_linker_section_pointers_t *
2769 elf_find_pointer_linker_section
2770 (elf_linker_section_pointers_t *linker_pointers,
2772 elf_linker_section_t *lsect)
2774 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2775 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2776 return linker_pointers;
2781 /* Allocate a pointer to live in a linker created section. */
2784 elf_create_pointer_linker_section (bfd *abfd,
2785 elf_linker_section_t *lsect,
2786 struct elf_link_hash_entry *h,
2787 const Elf_Internal_Rela *rel)
2789 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2790 elf_linker_section_pointers_t *linker_section_ptr;
2791 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2794 BFD_ASSERT (lsect != NULL);
2796 /* Is this a global symbol? */
2799 struct ppc_elf_link_hash_entry *eh;
2801 /* Has this symbol already been allocated? If so, our work is done. */
2802 eh = (struct ppc_elf_link_hash_entry *) h;
2803 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2808 ptr_linker_section_ptr = &eh->linker_section_pointer;
2812 /* Allocation of a pointer to a local symbol. */
2813 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2815 /* Allocate a table to hold the local symbols if first time. */
2818 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2821 amt *= sizeof (elf_linker_section_pointers_t *);
2822 ptr = bfd_zalloc (abfd, amt);
2827 elf_local_ptr_offsets (abfd) = ptr;
2830 /* Has this symbol already been allocated? If so, our work is done. */
2831 if (elf_find_pointer_linker_section (ptr[r_symndx],
2836 ptr_linker_section_ptr = &ptr[r_symndx];
2839 /* Allocate space for a pointer in the linker section, and allocate
2840 a new pointer record from internal memory. */
2841 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2842 amt = sizeof (elf_linker_section_pointers_t);
2843 linker_section_ptr = bfd_alloc (abfd, amt);
2845 if (!linker_section_ptr)
2848 linker_section_ptr->next = *ptr_linker_section_ptr;
2849 linker_section_ptr->addend = rel->r_addend;
2850 linker_section_ptr->lsect = lsect;
2851 *ptr_linker_section_ptr = linker_section_ptr;
2853 linker_section_ptr->offset = lsect->section->size;
2854 lsect->section->size += 4;
2858 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2859 lsect->name, (long) linker_section_ptr->offset,
2860 (long) lsect->section->size);
2867 update_local_sym_info (bfd *abfd,
2868 Elf_Internal_Shdr *symtab_hdr,
2869 unsigned long r_symndx,
2872 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2873 char *local_got_tls_masks;
2875 if (local_got_refcounts == NULL)
2877 bfd_size_type size = symtab_hdr->sh_info;
2879 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2880 local_got_refcounts = bfd_zalloc (abfd, size);
2881 if (local_got_refcounts == NULL)
2883 elf_local_got_refcounts (abfd) = local_got_refcounts;
2886 local_got_refcounts[r_symndx] += 1;
2887 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2888 local_got_tls_masks[r_symndx] |= tls_type;
2893 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2894 asection *sec, bfd_vma addend)
2896 struct plt_entry *ent;
2900 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2901 if (ent->sec == sec && ent->addend == addend)
2905 bfd_size_type amt = sizeof (*ent);
2906 ent = bfd_alloc (abfd, amt);
2909 ent->next = h->plt.plist;
2911 ent->addend = addend;
2912 ent->plt.refcount = 0;
2915 ent->plt.refcount += 1;
2919 static struct plt_entry *
2920 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2922 struct plt_entry *ent;
2926 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2927 if (ent->sec == sec && ent->addend == addend)
2933 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2935 (*_bfd_error_handler)
2936 (_("%B: relocation %s cannot be used when making a shared object"),
2938 ppc_elf_howto_table[r_type]->name);
2939 bfd_set_error (bfd_error_bad_value);
2942 /* Look through the relocs for a section during the first phase, and
2943 allocate space in the global offset table or procedure linkage
2947 ppc_elf_check_relocs (bfd *abfd,
2948 struct bfd_link_info *info,
2950 const Elf_Internal_Rela *relocs)
2952 struct ppc_elf_link_hash_table *htab;
2953 Elf_Internal_Shdr *symtab_hdr;
2954 struct elf_link_hash_entry **sym_hashes;
2955 const Elf_Internal_Rela *rel;
2956 const Elf_Internal_Rela *rel_end;
2957 asection *got2, *sreloc;
2959 if (info->relocatable)
2962 /* Don't do anything special with non-loaded, non-alloced sections.
2963 In particular, any relocs in such sections should not affect GOT
2964 and PLT reference counting (ie. we don't allow them to create GOT
2965 or PLT entries), there's no possibility or desire to optimize TLS
2966 relocs, and there's not much point in propagating relocs to shared
2967 libs that the dynamic linker won't relocate. */
2968 if ((sec->flags & SEC_ALLOC) == 0)
2972 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2976 /* Initialize howto table if not already done. */
2977 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2978 ppc_elf_howto_init ();
2980 htab = ppc_elf_hash_table (info);
2981 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2982 sym_hashes = elf_sym_hashes (abfd);
2983 got2 = bfd_get_section_by_name (abfd, ".got2");
2986 rel_end = relocs + sec->reloc_count;
2987 for (rel = relocs; rel < rel_end; rel++)
2989 unsigned long r_symndx;
2990 enum elf_ppc_reloc_type r_type;
2991 struct elf_link_hash_entry *h;
2994 r_symndx = ELF32_R_SYM (rel->r_info);
2995 if (r_symndx < symtab_hdr->sh_info)
2999 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3000 while (h->root.type == bfd_link_hash_indirect
3001 || h->root.type == bfd_link_hash_warning)
3002 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3005 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3006 This shows up in particular in an R_PPC_ADDR32 in the eabi
3009 && htab->got == NULL
3010 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3012 if (htab->elf.dynobj == NULL)
3013 htab->elf.dynobj = abfd;
3014 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3016 BFD_ASSERT (h == htab->elf.hgot);
3019 r_type = ELF32_R_TYPE (rel->r_info);
3022 case R_PPC_GOT_TLSLD16:
3023 case R_PPC_GOT_TLSLD16_LO:
3024 case R_PPC_GOT_TLSLD16_HI:
3025 case R_PPC_GOT_TLSLD16_HA:
3026 htab->tlsld_got.refcount += 1;
3027 tls_type = TLS_TLS | TLS_LD;
3030 case R_PPC_GOT_TLSGD16:
3031 case R_PPC_GOT_TLSGD16_LO:
3032 case R_PPC_GOT_TLSGD16_HI:
3033 case R_PPC_GOT_TLSGD16_HA:
3034 tls_type = TLS_TLS | TLS_GD;
3037 case R_PPC_GOT_TPREL16:
3038 case R_PPC_GOT_TPREL16_LO:
3039 case R_PPC_GOT_TPREL16_HI:
3040 case R_PPC_GOT_TPREL16_HA:
3042 info->flags |= DF_STATIC_TLS;
3043 tls_type = TLS_TLS | TLS_TPREL;
3046 case R_PPC_GOT_DTPREL16:
3047 case R_PPC_GOT_DTPREL16_LO:
3048 case R_PPC_GOT_DTPREL16_HI:
3049 case R_PPC_GOT_DTPREL16_HA:
3050 tls_type = TLS_TLS | TLS_DTPREL;
3052 sec->has_tls_reloc = 1;
3055 /* GOT16 relocations */
3057 case R_PPC_GOT16_LO:
3058 case R_PPC_GOT16_HI:
3059 case R_PPC_GOT16_HA:
3060 /* This symbol requires a global offset table entry. */
3061 if (htab->got == NULL)
3063 if (htab->elf.dynobj == NULL)
3064 htab->elf.dynobj = abfd;
3065 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3070 h->got.refcount += 1;
3071 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3074 /* This is a global offset table entry for a local symbol. */
3075 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3079 /* Indirect .sdata relocation. */
3080 case R_PPC_EMB_SDAI16:
3083 bad_shared_reloc (abfd, r_type);
3086 if (htab->sdata[0].section == NULL
3087 && !ppc_elf_create_linker_section (abfd, info, 0,
3090 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3095 /* Indirect .sdata2 relocation. */
3096 case R_PPC_EMB_SDA2I16:
3099 bad_shared_reloc (abfd, r_type);
3102 if (htab->sdata[1].section == NULL
3103 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3106 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3111 case R_PPC_SDAREL16:
3112 case R_PPC_EMB_SDA2REL:
3113 case R_PPC_EMB_SDA21:
3114 case R_PPC_EMB_RELSDA:
3115 case R_PPC_EMB_NADDR32:
3116 case R_PPC_EMB_NADDR16:
3117 case R_PPC_EMB_NADDR16_LO:
3118 case R_PPC_EMB_NADDR16_HI:
3119 case R_PPC_EMB_NADDR16_HA:
3122 bad_shared_reloc (abfd, r_type);
3127 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3128 /* We may need a copy reloc. */
3129 h->non_got_ref = TRUE;
3134 case R_PPC_PLTREL24:
3135 case R_PPC_PLTREL32:
3136 case R_PPC_PLT16_LO:
3137 case R_PPC_PLT16_HI:
3138 case R_PPC_PLT16_HA:
3140 fprintf (stderr, "Reloc requires a PLT entry\n");
3142 /* This symbol requires a procedure linkage table entry. We
3143 actually build the entry in finish_dynamic_symbol,
3144 because this might be a case of linking PIC code without
3145 linking in any dynamic objects, in which case we don't
3146 need to generate a procedure linkage table after all. */
3150 /* It does not make sense to have a procedure linkage
3151 table entry for a local symbol. */
3152 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3156 (long) rel->r_offset,
3157 ppc_elf_howto_table[r_type]->name);
3158 bfd_set_error (bfd_error_bad_value);
3163 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3166 if (!update_plt_info (abfd, h, got2, addend))
3171 /* The following relocations don't need to propagate the
3172 relocation if linking a shared object since they are
3173 section relative. */
3175 case R_PPC_SECTOFF_LO:
3176 case R_PPC_SECTOFF_HI:
3177 case R_PPC_SECTOFF_HA:
3178 case R_PPC_DTPREL16:
3179 case R_PPC_DTPREL16_LO:
3180 case R_PPC_DTPREL16_HI:
3181 case R_PPC_DTPREL16_HA:
3186 case R_PPC_REL16_LO:
3187 case R_PPC_REL16_HI:
3188 case R_PPC_REL16_HA:
3192 /* These are just markers. */
3194 case R_PPC_EMB_MRKREF:
3199 /* These should only appear in dynamic objects. */
3201 case R_PPC_GLOB_DAT:
3202 case R_PPC_JMP_SLOT:
3203 case R_PPC_RELATIVE:
3206 /* These aren't handled yet. We'll report an error later. */
3208 case R_PPC_EMB_RELSEC16:
3209 case R_PPC_EMB_RELST_LO:
3210 case R_PPC_EMB_RELST_HI:
3211 case R_PPC_EMB_RELST_HA:
3212 case R_PPC_EMB_BIT_FLD:
3215 /* This refers only to functions defined in the shared library. */
3216 case R_PPC_LOCAL24PC:
3217 if (h && h == htab->elf.hgot)
3221 /* This relocation describes the C++ object vtable hierarchy.
3222 Reconstruct it for later use during GC. */
3223 case R_PPC_GNU_VTINHERIT:
3224 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3228 /* This relocation describes which C++ vtable entries are actually
3229 used. Record for later use during GC. */
3230 case R_PPC_GNU_VTENTRY:
3231 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3235 /* We shouldn't really be seeing these. */
3238 info->flags |= DF_STATIC_TLS;
3242 case R_PPC_DTPMOD32:
3243 case R_PPC_DTPREL32:
3247 case R_PPC_TPREL16_LO:
3248 case R_PPC_TPREL16_HI:
3249 case R_PPC_TPREL16_HA:
3251 info->flags |= DF_STATIC_TLS;
3257 && (sec->flags & SEC_CODE) != 0
3258 && (info->shared || info->pie)
3261 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3262 the start of a function, which assembles to a REL32
3263 reference to .got2. If we detect one of these, then
3264 force the old PLT layout because the linker cannot
3265 reliably deduce the GOT pointer value needed for
3269 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3278 case R_PPC_REL14_BRTAKEN:
3279 case R_PPC_REL14_BRNTAKEN:
3282 if (h == htab->elf.hgot)
3292 case R_PPC_ADDR16_LO:
3293 case R_PPC_ADDR16_HI:
3294 case R_PPC_ADDR16_HA:
3296 case R_PPC_ADDR14_BRTAKEN:
3297 case R_PPC_ADDR14_BRNTAKEN:
3300 if (h != NULL && !info->shared)
3302 /* We may need a plt entry if the symbol turns out to be
3303 a function defined in a dynamic object. */
3304 if (!update_plt_info (abfd, h, NULL, 0))
3307 /* We may need a copy reloc too. */
3312 /* If we are creating a shared library, and this is a reloc
3313 against a global symbol, or a non PC relative reloc
3314 against a local symbol, then we need to copy the reloc
3315 into the shared library. However, if we are linking with
3316 -Bsymbolic, we do not need to copy a reloc against a
3317 global symbol which is defined in an object we are
3318 including in the link (i.e., DEF_REGULAR is set). At
3319 this point we have not seen all the input files, so it is
3320 possible that DEF_REGULAR is not set now but will be set
3321 later (it is never cleared). In case of a weak definition,
3322 DEF_REGULAR may be cleared later by a strong definition in
3323 a shared library. We account for that possibility below by
3324 storing information in the dyn_relocs field of the hash
3325 table entry. A similar situation occurs when creating
3326 shared libraries and symbol visibility changes render the
3329 If on the other hand, we are creating an executable, we
3330 may need to keep relocations for symbols satisfied by a
3331 dynamic library if we manage to avoid copy relocs for the
3334 && (MUST_BE_DYN_RELOC (r_type)
3336 && (! info->symbolic
3337 || h->root.type == bfd_link_hash_defweak
3338 || !h->def_regular))))
3339 || (ELIMINATE_COPY_RELOCS
3342 && (h->root.type == bfd_link_hash_defweak
3343 || !h->def_regular)))
3345 struct ppc_elf_dyn_relocs *p;
3346 struct ppc_elf_dyn_relocs **head;
3350 "ppc_elf_check_relocs needs to "
3351 "create relocation for %s\n",
3352 (h && h->root.root.string
3353 ? h->root.root.string : "<unknown>"));
3359 name = (bfd_elf_string_from_elf_section
3361 elf_elfheader (abfd)->e_shstrndx,
3362 elf_section_data (sec)->rel_hdr.sh_name));
3366 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3367 && strcmp (bfd_get_section_name (abfd, sec),
3370 if (htab->elf.dynobj == NULL)
3371 htab->elf.dynobj = abfd;
3372 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3377 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3378 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3379 | SEC_ALLOC | SEC_LOAD);
3380 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3384 || ! bfd_set_section_alignment (htab->elf.dynobj,
3388 elf_section_data (sec)->sreloc = sreloc;
3391 /* If this is a global symbol, we count the number of
3392 relocations we need for this symbol. */
3395 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3399 /* Track dynamic relocs needed for local syms too.
3400 We really need local syms available to do this
3404 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3409 head = ((struct ppc_elf_dyn_relocs **)
3410 &elf_section_data (s)->local_dynrel);
3414 if (p == NULL || p->sec != sec)
3416 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3427 if (!MUST_BE_DYN_RELOC (r_type))
3438 /* Merge backend specific data from an object file to the output
3439 object file when linking. */
3442 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3448 if (!is_ppc_elf_target (ibfd->xvec)
3449 || !is_ppc_elf_target (obfd->xvec))
3452 /* Check if we have the same endianess. */
3453 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3456 new_flags = elf_elfheader (ibfd)->e_flags;
3457 old_flags = elf_elfheader (obfd)->e_flags;
3458 if (!elf_flags_init (obfd))
3460 /* First call, no flags set. */
3461 elf_flags_init (obfd) = TRUE;
3462 elf_elfheader (obfd)->e_flags = new_flags;
3465 /* Compatible flags are ok. */
3466 else if (new_flags == old_flags)
3469 /* Incompatible flags. */
3472 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3473 to be linked with either. */
3475 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3476 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3479 (*_bfd_error_handler)
3480 (_("%B: compiled with -mrelocatable and linked with "
3481 "modules compiled normally"), ibfd);
3483 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3484 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3487 (*_bfd_error_handler)
3488 (_("%B: compiled normally and linked with "
3489 "modules compiled with -mrelocatable"), ibfd);
3492 /* The output is -mrelocatable-lib iff both the input files are. */
3493 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3494 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3496 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3497 but each input file is either -mrelocatable or -mrelocatable-lib. */
3498 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3499 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3500 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3501 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3503 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3504 any module uses it. */
3505 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3507 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3508 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3510 /* Warn about any other mismatches. */
3511 if (new_flags != old_flags)
3514 (*_bfd_error_handler)
3515 (_("%B: uses different e_flags (0x%lx) fields "
3516 "than previous modules (0x%lx)"),
3517 ibfd, (long) new_flags, (long) old_flags);
3522 bfd_set_error (bfd_error_bad_value);
3530 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3531 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3533 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3534 struct bfd_link_info *info,
3537 struct ppc_elf_link_hash_table *htab;
3540 htab = ppc_elf_hash_table (info);
3541 if (force_old_plt || !htab->new_plt)
3544 if (htab->is_vxworks)
3546 /* The VxWorks PLT is a loaded section with contents. */
3547 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED
3548 | SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3550 if (htab->plt != NULL
3551 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3554 else if (!htab->old_plt)
3556 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3557 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3559 /* The new PLT is a loaded section. */
3560 if (htab->plt != NULL
3561 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3564 /* The new GOT is not executable. */
3565 if (htab->got != NULL
3566 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3571 /* Stop an unused .glink section from affecting .text alignment. */
3572 if (htab->glink != NULL
3573 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3576 return !htab->old_plt;
3579 /* Return the section that should be marked against GC for a given
3583 ppc_elf_gc_mark_hook (asection *sec,
3584 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3585 Elf_Internal_Rela *rel,
3586 struct elf_link_hash_entry *h,
3587 Elf_Internal_Sym *sym)
3591 switch (ELF32_R_TYPE (rel->r_info))
3593 case R_PPC_GNU_VTINHERIT:
3594 case R_PPC_GNU_VTENTRY:
3598 switch (h->root.type)
3600 case bfd_link_hash_defined:
3601 case bfd_link_hash_defweak:
3602 return h->root.u.def.section;
3604 case bfd_link_hash_common:
3605 return h->root.u.c.p->section;
3613 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3618 /* Update the got, plt and dynamic reloc reference counts for the
3619 section being removed. */
3622 ppc_elf_gc_sweep_hook (bfd *abfd,
3623 struct bfd_link_info *info,
3625 const Elf_Internal_Rela *relocs)
3627 struct ppc_elf_link_hash_table *htab;
3628 Elf_Internal_Shdr *symtab_hdr;
3629 struct elf_link_hash_entry **sym_hashes;
3630 bfd_signed_vma *local_got_refcounts;
3631 const Elf_Internal_Rela *rel, *relend;
3634 if ((sec->flags & SEC_ALLOC) == 0)
3637 elf_section_data (sec)->local_dynrel = NULL;
3639 htab = ppc_elf_hash_table (info);
3640 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3641 sym_hashes = elf_sym_hashes (abfd);
3642 local_got_refcounts = elf_local_got_refcounts (abfd);
3643 got2 = bfd_get_section_by_name (abfd, ".got2");
3645 relend = relocs + sec->reloc_count;
3646 for (rel = relocs; rel < relend; rel++)
3648 unsigned long r_symndx;
3649 enum elf_ppc_reloc_type r_type;
3650 struct elf_link_hash_entry *h = NULL;
3652 r_symndx = ELF32_R_SYM (rel->r_info);
3653 if (r_symndx >= symtab_hdr->sh_info)
3655 struct ppc_elf_dyn_relocs **pp, *p;
3656 struct ppc_elf_link_hash_entry *eh;
3658 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3659 while (h->root.type == bfd_link_hash_indirect
3660 || h->root.type == bfd_link_hash_warning)
3661 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3662 eh = (struct ppc_elf_link_hash_entry *) h;
3664 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3667 /* Everything must go for SEC. */
3673 r_type = ELF32_R_TYPE (rel->r_info);
3676 case R_PPC_GOT_TLSLD16:
3677 case R_PPC_GOT_TLSLD16_LO:
3678 case R_PPC_GOT_TLSLD16_HI:
3679 case R_PPC_GOT_TLSLD16_HA:
3680 htab->tlsld_got.refcount -= 1;
3683 case R_PPC_GOT_TLSGD16:
3684 case R_PPC_GOT_TLSGD16_LO:
3685 case R_PPC_GOT_TLSGD16_HI:
3686 case R_PPC_GOT_TLSGD16_HA:
3687 case R_PPC_GOT_TPREL16:
3688 case R_PPC_GOT_TPREL16_LO:
3689 case R_PPC_GOT_TPREL16_HI:
3690 case R_PPC_GOT_TPREL16_HA:
3691 case R_PPC_GOT_DTPREL16:
3692 case R_PPC_GOT_DTPREL16_LO:
3693 case R_PPC_GOT_DTPREL16_HI:
3694 case R_PPC_GOT_DTPREL16_HA:
3696 case R_PPC_GOT16_LO:
3697 case R_PPC_GOT16_HI:
3698 case R_PPC_GOT16_HA:
3701 if (h->got.refcount > 0)
3704 else if (local_got_refcounts != NULL)
3706 if (local_got_refcounts[r_symndx] > 0)
3707 local_got_refcounts[r_symndx]--;
3713 case R_PPC_REL14_BRTAKEN:
3714 case R_PPC_REL14_BRNTAKEN:
3716 if (h == NULL || h == htab->elf.hgot)
3723 case R_PPC_ADDR16_LO:
3724 case R_PPC_ADDR16_HI:
3725 case R_PPC_ADDR16_HA:
3727 case R_PPC_ADDR14_BRTAKEN:
3728 case R_PPC_ADDR14_BRNTAKEN:
3735 case R_PPC_PLTREL24:
3736 case R_PPC_PLTREL32:
3737 case R_PPC_PLT16_LO:
3738 case R_PPC_PLT16_HI:
3739 case R_PPC_PLT16_HA:
3742 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3743 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3744 if (ent->plt.refcount > 0)
3745 ent->plt.refcount -= 1;
3756 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3759 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3761 struct ppc_elf_link_hash_table *htab;
3763 htab = ppc_elf_hash_table (info);
3765 && htab->plt != NULL
3766 && htab->plt->output_section != NULL)
3768 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3769 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3772 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3773 FALSE, FALSE, TRUE);
3774 return _bfd_elf_tls_setup (obfd, info);
3777 /* Run through all the TLS relocs looking for optimization
3781 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3782 struct bfd_link_info *info)
3786 struct ppc_elf_link_hash_table *htab;
3788 if (info->relocatable || info->shared)
3791 htab = ppc_elf_hash_table (info);
3792 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3794 Elf_Internal_Sym *locsyms = NULL;
3795 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3797 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3798 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3800 Elf_Internal_Rela *relstart, *rel, *relend;
3801 int expecting_tls_get_addr;
3803 /* Read the relocations. */
3804 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3806 if (relstart == NULL)
3809 expecting_tls_get_addr = 0;
3810 relend = relstart + sec->reloc_count;
3811 for (rel = relstart; rel < relend; rel++)
3813 enum elf_ppc_reloc_type r_type;
3814 unsigned long r_symndx;
3815 struct elf_link_hash_entry *h = NULL;
3817 char tls_set, tls_clear;
3818 bfd_boolean is_local;
3820 r_symndx = ELF32_R_SYM (rel->r_info);
3821 if (r_symndx >= symtab_hdr->sh_info)
3823 struct elf_link_hash_entry **sym_hashes;
3825 sym_hashes = elf_sym_hashes (ibfd);
3826 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3827 while (h->root.type == bfd_link_hash_indirect
3828 || h->root.type == bfd_link_hash_warning)
3829 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3837 r_type = ELF32_R_TYPE (rel->r_info);
3840 case R_PPC_GOT_TLSLD16:
3841 case R_PPC_GOT_TLSLD16_LO:
3842 case R_PPC_GOT_TLSLD16_HI:
3843 case R_PPC_GOT_TLSLD16_HA:
3844 /* These relocs should never be against a symbol
3845 defined in a shared lib. Leave them alone if
3846 that turns out to be the case. */
3847 expecting_tls_get_addr = 0;
3848 htab->tlsld_got.refcount -= 1;
3855 expecting_tls_get_addr = 1;
3858 case R_PPC_GOT_TLSGD16:
3859 case R_PPC_GOT_TLSGD16_LO:
3860 case R_PPC_GOT_TLSGD16_HI:
3861 case R_PPC_GOT_TLSGD16_HA:
3867 tls_set = TLS_TLS | TLS_TPRELGD;
3869 expecting_tls_get_addr = 1;
3872 case R_PPC_GOT_TPREL16:
3873 case R_PPC_GOT_TPREL16_LO:
3874 case R_PPC_GOT_TPREL16_HI:
3875 case R_PPC_GOT_TPREL16_HA:
3876 expecting_tls_get_addr = 0;
3881 tls_clear = TLS_TPREL;
3888 case R_PPC_REL14_BRTAKEN:
3889 case R_PPC_REL14_BRNTAKEN:
3891 if (expecting_tls_get_addr
3893 && h == htab->tls_get_addr)
3895 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3896 if (ent != NULL && ent->plt.refcount > 0)
3897 ent->plt.refcount -= 1;
3899 expecting_tls_get_addr = 0;
3903 expecting_tls_get_addr = 0;
3911 /* We managed to get rid of a got entry. */
3912 if (h->got.refcount > 0)
3913 h->got.refcount -= 1;
3915 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3919 Elf_Internal_Sym *sym;
3920 bfd_signed_vma *lgot_refs;
3923 if (locsyms == NULL)
3925 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3926 if (locsyms == NULL)
3927 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3928 symtab_hdr->sh_info,
3929 0, NULL, NULL, NULL);
3930 if (locsyms == NULL)
3932 if (elf_section_data (sec)->relocs != relstart)
3937 sym = locsyms + r_symndx;
3938 lgot_refs = elf_local_got_refcounts (ibfd);
3939 if (lgot_refs == NULL)
3943 /* We managed to get rid of a got entry. */
3944 if (lgot_refs[r_symndx] > 0)
3945 lgot_refs[r_symndx] -= 1;
3947 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3948 tls_mask = &lgot_masks[r_symndx];
3951 *tls_mask |= tls_set;
3952 *tls_mask &= ~tls_clear;
3955 if (elf_section_data (sec)->relocs != relstart)
3960 && (symtab_hdr->contents != (unsigned char *) locsyms))
3962 if (!info->keep_memory)
3965 symtab_hdr->contents = (unsigned char *) locsyms;
3971 /* Adjust a symbol defined by a dynamic object and referenced by a
3972 regular object. The current definition is in some section of the
3973 dynamic object, but we're not including those sections. We have to
3974 change the definition to something the rest of the link can
3978 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3979 struct elf_link_hash_entry *h)
3981 struct ppc_elf_link_hash_table *htab;
3983 unsigned int power_of_two;
3986 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3987 h->root.root.string);
3990 /* Make sure we know what is going on here. */
3991 htab = ppc_elf_hash_table (info);
3992 BFD_ASSERT (htab->elf.dynobj != NULL
3994 || h->u.weakdef != NULL
3997 && !h->def_regular)));
3999 /* Deal with function syms. */
4000 if (h->type == STT_FUNC
4003 /* Clear procedure linkage table information for any symbol that
4004 won't need a .plt entry. */
4005 struct plt_entry *ent;
4006 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4007 if (ent->plt.refcount > 0)
4010 || SYMBOL_CALLS_LOCAL (info, h)
4011 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4012 && h->root.type == bfd_link_hash_undefweak))
4014 /* A PLT entry is not required/allowed when:
4016 1. We are not using ld.so; because then the PLT entry
4017 can't be set up, so we can't use one. In this case,
4018 ppc_elf_adjust_dynamic_symbol won't even be called.
4020 2. GC has rendered the entry unused.
4022 3. We know for certain that a call to this symbol
4023 will go to this object, or will remain undefined. */
4024 h->plt.plist = NULL;
4030 h->plt.plist = NULL;
4032 /* If this is a weak symbol, and there is a real definition, the
4033 processor independent code will have arranged for us to see the
4034 real definition first, and we can just use the same value. */
4035 if (h->u.weakdef != NULL)
4037 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4038 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4039 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4040 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4041 if (ELIMINATE_COPY_RELOCS)
4042 h->non_got_ref = h->u.weakdef->non_got_ref;
4046 /* This is a reference to a symbol defined by a dynamic object which
4047 is not a function. */
4049 /* First, a fudge for old shared libs that export some symbols they
4052 && (strcmp (h->root.root.string, "_SDA_BASE_") == 0
4053 || strcmp (h->root.root.string, "_SDA2_BASE_") == 0))
4055 /* These symbols will be defined later, as if they were defined in
4056 a linker script. We don't want to use a definition in a shared
4058 const struct elf_backend_data *bed;
4060 bed = get_elf_backend_data (htab->elf.dynobj);
4061 (*bed->elf_backend_hide_symbol) (info, h, TRUE);
4062 h->root.type = bfd_link_hash_undefined;
4063 h->root.u.undef.abfd = htab->elf.dynobj;
4067 /* If we are creating a shared library, we must presume that the
4068 only references to the symbol are via the global offset table.
4069 For such cases we need not do anything here; the relocations will
4070 be handled correctly by relocate_section. */
4074 /* If there are no references to this symbol that do not use the
4075 GOT, we don't need to generate a copy reloc. */
4076 if (!h->non_got_ref)
4079 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4080 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4081 do this if there are any small data relocations. */
4082 if (ELIMINATE_COPY_RELOCS
4083 && !ppc_elf_hash_entry (h)->has_sda_refs)
4085 struct ppc_elf_dyn_relocs *p;
4086 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4088 s = p->sec->output_section;
4089 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4100 /* We must allocate the symbol in our .dynbss section, which will
4101 become part of the .bss section of the executable. There will be
4102 an entry for this symbol in the .dynsym section. The dynamic
4103 object will contain position independent code, so all references
4104 from the dynamic object to this symbol will go through the global
4105 offset table. The dynamic linker will use the .dynsym entry to
4106 determine the address it must put in the global offset table, so
4107 both the dynamic object and the regular object will refer to the
4108 same memory location for the variable.
4110 Of course, if the symbol is referenced using SDAREL relocs, we
4111 must instead allocate it in .sbss. */
4113 if (ppc_elf_hash_entry (h)->has_sda_refs)
4117 BFD_ASSERT (s != NULL);
4119 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4120 copy the initial value out of the dynamic object and into the
4121 runtime process image. We need to remember the offset into the
4122 .rela.bss section we are going to use. */
4123 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4127 if (ppc_elf_hash_entry (h)->has_sda_refs)
4128 srel = htab->relsbss;
4130 srel = htab->relbss;
4131 BFD_ASSERT (srel != NULL);
4132 srel->size += sizeof (Elf32_External_Rela);
4136 /* We need to figure out the alignment required for this symbol. I
4137 have no idea how ELF linkers handle this. */
4138 power_of_two = bfd_log2 (h->size);
4139 if (power_of_two > 4)
4142 /* Apply the required alignment. */
4143 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4144 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4146 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4150 /* Define the symbol as being at this point in the section. */
4151 h->root.u.def.section = s;
4152 h->root.u.def.value = s->size;
4154 /* Increment the section size to make room for the symbol. */
4160 /* Allocate NEED contiguous space in .got, and return the offset.
4161 Handles allocation of the got header when crossing 32k. */
4164 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4167 unsigned int max_before_header = 32768;
4170 max_before_header = 32764;
4172 if (htab->is_vxworks)
4174 where = htab->got->size;
4175 htab->got->size += need;
4177 else if (need <= htab->got_gap)
4179 where = max_before_header - htab->got_gap;
4180 htab->got_gap -= need;
4184 if (htab->got->size + need > max_before_header
4185 && htab->got->size <= max_before_header)
4187 htab->got_gap = max_before_header - htab->got->size;
4188 htab->got->size = max_before_header + htab->got_header_size;
4190 where = htab->got->size;
4191 htab->got->size += need;
4196 /* Allocate space in associated reloc sections for dynamic relocs. */
4199 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4201 struct bfd_link_info *info = inf;
4202 struct ppc_elf_link_hash_entry *eh;
4203 struct ppc_elf_link_hash_table *htab;
4204 struct ppc_elf_dyn_relocs *p;
4206 if (h->root.type == bfd_link_hash_indirect)
4209 if (h->root.type == bfd_link_hash_warning)
4210 /* When warning symbols are created, they **replace** the "real"
4211 entry in the hash table, thus we never get to see the real
4212 symbol in a hash traversal. So look at it now. */
4213 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4215 htab = ppc_elf_hash_table (info);
4216 if (htab->elf.dynamic_sections_created)
4218 struct plt_entry *ent;
4219 bfd_boolean doneone = FALSE;
4220 bfd_vma plt_offset = 0, glink_offset = 0;
4222 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4223 if (ent->plt.refcount > 0)
4225 /* Make sure this symbol is output as a dynamic symbol. */
4226 if (h->dynindx == -1
4227 && !h->forced_local)
4229 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4234 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4236 asection *s = htab->plt;
4238 if (!(htab->old_plt || htab->is_vxworks))
4242 plt_offset = s->size;
4245 ent->plt.offset = plt_offset;
4248 if (!doneone || info->shared || info->pie)
4250 glink_offset = s->size;
4251 s->size += GLINK_ENTRY_SIZE;
4257 h->root.u.def.section = s;
4258 h->root.u.def.value = glink_offset;
4260 ent->glink_offset = glink_offset;
4266 /* If this is the first .plt entry, make room
4267 for the special first entry. */
4269 s->size += htab->plt_initial_entry_size;
4271 /* The PowerPC PLT is actually composed of two
4272 parts, the first part is 2 words (for a load
4273 and a jump), and then there is a remaining
4274 word available at the end. */
4275 plt_offset = (htab->plt_initial_entry_size
4276 + (htab->plt_slot_size
4278 - htab->plt_initial_entry_size)
4279 / htab->plt_entry_size)));
4281 /* If this symbol is not defined in a regular
4282 file, and we are not generating a shared
4283 library, then set the symbol to this location
4284 in the .plt. This is required to make
4285 function pointers compare as equal between
4286 the normal executable and the shared library. */
4290 h->root.u.def.section = s;
4291 h->root.u.def.value = plt_offset;
4294 /* Make room for this entry. */
4295 s->size += htab->plt_entry_size;
4296 /* After the 8192nd entry, room for two entries
4298 if (!htab->is_vxworks
4299 && (s->size - htab->plt_initial_entry_size)
4300 / htab->plt_entry_size
4301 > PLT_NUM_SINGLE_ENTRIES)
4302 s->size += htab->plt_entry_size;
4304 ent->plt.offset = plt_offset;
4307 /* We also need to make an entry in the .rela.plt section. */
4310 htab->relplt->size += sizeof (Elf32_External_Rela);
4312 if (htab->is_vxworks)
4314 /* Allocate space for the unloaded relocations. */
4318 == (bfd_vma) htab->plt_initial_entry_size)
4320 htab->srelplt2->size
4321 += sizeof (Elf32_External_Rela)
4322 * VXWORKS_PLTRESOLVE_RELOCS;
4325 htab->srelplt2->size
4326 += sizeof (Elf32_External_Rela)
4327 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4330 /* Every PLT entry has an associated GOT entry in
4332 htab->sgotplt->size += 4;
4338 ent->plt.offset = (bfd_vma) -1;
4342 h->plt.plist = NULL;
4349 h->plt.plist = NULL;
4353 eh = (struct ppc_elf_link_hash_entry *) h;
4354 if (eh->elf.got.refcount > 0)
4356 /* Make sure this symbol is output as a dynamic symbol. */
4357 if (eh->elf.dynindx == -1
4358 && !eh->elf.forced_local)
4360 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4364 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4365 && !eh->elf.def_dynamic)
4366 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4367 eh->elf.got.offset = (bfd_vma) -1;
4371 unsigned int need = 0;
4372 if ((eh->tls_mask & TLS_TLS) != 0)
4374 if ((eh->tls_mask & TLS_LD) != 0)
4376 if ((eh->tls_mask & TLS_GD) != 0)
4378 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4380 if ((eh->tls_mask & TLS_DTPREL) != 0)
4385 eh->elf.got.offset = allocate_got (htab, need);
4386 dyn = htab->elf.dynamic_sections_created;
4388 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4389 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4390 || eh->elf.root.type != bfd_link_hash_undefweak))
4392 /* All the entries we allocated need relocs.
4393 Except LD only needs one. */
4394 if ((eh->tls_mask & TLS_LD) != 0)
4396 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4401 eh->elf.got.offset = (bfd_vma) -1;
4403 if (eh->dyn_relocs == NULL)
4406 /* In the shared -Bsymbolic case, discard space allocated for
4407 dynamic pc-relative relocs against symbols which turn out to be
4408 defined in regular objects. For the normal shared case, discard
4409 space for relocs that have become local due to symbol visibility
4414 /* Relocs that use pc_count are those that appear on a call insn,
4415 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4416 generated via assembly. We want calls to protected symbols to
4417 resolve directly to the function rather than going via the plt.
4418 If people want function pointer comparisons to work as expected
4419 then they should avoid writing weird assembly. */
4420 if (SYMBOL_CALLS_LOCAL (info, h))
4422 struct ppc_elf_dyn_relocs **pp;
4424 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4426 p->count -= p->pc_count;
4435 /* Also discard relocs on undefined weak syms with non-default
4437 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4438 && h->root.type == bfd_link_hash_undefweak)
4439 eh->dyn_relocs = NULL;
4441 /* Make sure undefined weak symbols are output as a dynamic symbol
4444 && eh->dyn_relocs != NULL
4446 && h->root.type == bfd_link_hash_undefweak
4447 && !h->forced_local)
4449 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4453 else if (ELIMINATE_COPY_RELOCS)
4455 /* For the non-shared case, discard space for relocs against
4456 symbols which turn out to need copy relocs or are not
4463 /* Make sure this symbol is output as a dynamic symbol.
4464 Undefined weak syms won't yet be marked as dynamic. */
4465 if (h->dynindx == -1
4466 && !h->forced_local)
4468 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4472 /* If that succeeded, we know we'll be keeping all the
4474 if (h->dynindx != -1)
4478 eh->dyn_relocs = NULL;
4483 /* Finally, allocate space. */
4484 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4486 asection *sreloc = elf_section_data (p->sec)->sreloc;
4487 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4493 /* Find any dynamic relocs that apply to read-only sections. */
4496 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4498 struct ppc_elf_dyn_relocs *p;
4500 if (h->root.type == bfd_link_hash_indirect)
4503 if (h->root.type == bfd_link_hash_warning)
4504 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4506 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4508 asection *s = p->sec->output_section;
4511 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4512 == (SEC_READONLY | SEC_ALLOC)))
4514 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4516 /* Not an error, just cut short the traversal. */
4523 /* Set the sizes of the dynamic sections. */
4526 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4527 struct bfd_link_info *info)
4529 struct ppc_elf_link_hash_table *htab;
4535 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4538 htab = ppc_elf_hash_table (info);
4539 BFD_ASSERT (htab->elf.dynobj != NULL);
4541 if (elf_hash_table (info)->dynamic_sections_created)
4543 /* Set the contents of the .interp section to the interpreter. */
4544 if (info->executable)
4546 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4547 BFD_ASSERT (s != NULL);
4548 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4549 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4554 htab->got_header_size = 16;
4556 htab->got_header_size = 12;
4558 /* Set up .got offsets for local syms, and space for local dynamic
4560 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4562 bfd_signed_vma *local_got;
4563 bfd_signed_vma *end_local_got;
4565 bfd_size_type locsymcount;
4566 Elf_Internal_Shdr *symtab_hdr;
4568 if (!is_ppc_elf_target (ibfd->xvec))
4571 for (s = ibfd->sections; s != NULL; s = s->next)
4573 struct ppc_elf_dyn_relocs *p;
4575 for (p = ((struct ppc_elf_dyn_relocs *)
4576 elf_section_data (s)->local_dynrel);
4580 if (!bfd_is_abs_section (p->sec)
4581 && bfd_is_abs_section (p->sec->output_section))
4583 /* Input section has been discarded, either because
4584 it is a copy of a linkonce section or due to
4585 linker script /DISCARD/, so we'll be discarding
4588 else if (p->count != 0)
4590 elf_section_data (p->sec)->sreloc->size
4591 += p->count * sizeof (Elf32_External_Rela);
4592 if ((p->sec->output_section->flags
4593 & (SEC_READONLY | SEC_ALLOC))
4594 == (SEC_READONLY | SEC_ALLOC))
4595 info->flags |= DF_TEXTREL;
4600 local_got = elf_local_got_refcounts (ibfd);
4604 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4605 locsymcount = symtab_hdr->sh_info;
4606 end_local_got = local_got + locsymcount;
4607 lgot_masks = (char *) end_local_got;
4608 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4611 if (*lgot_masks == (TLS_TLS | TLS_LD))
4613 /* If just an LD reloc, we'll just use
4614 htab->tlsld_got.offset. */
4615 htab->tlsld_got.refcount += 1;
4616 *local_got = (bfd_vma) -1;
4620 unsigned int need = 0;
4621 if ((*lgot_masks & TLS_TLS) != 0)
4623 if ((*lgot_masks & TLS_GD) != 0)
4625 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4627 if ((*lgot_masks & TLS_DTPREL) != 0)
4632 *local_got = allocate_got (htab, need);
4634 htab->relgot->size += (need
4635 * (sizeof (Elf32_External_Rela) / 4));
4639 *local_got = (bfd_vma) -1;
4642 if (htab->tlsld_got.refcount > 0)
4644 htab->tlsld_got.offset = allocate_got (htab, 8);
4646 htab->relgot->size += sizeof (Elf32_External_Rela);
4649 htab->tlsld_got.offset = (bfd_vma) -1;
4651 if (htab->is_vxworks)
4653 /* Save the GOT and PLT symbols in the hash table for easy access.
4654 Mark them as having relocations; they might not, but we won't
4655 know for sure until we build the GOT in finish_dynamic_symbol. */
4657 htab->hgot = elf_link_hash_lookup (elf_hash_table (info),
4658 "_GLOBAL_OFFSET_TABLE_",
4659 FALSE, FALSE, FALSE);
4661 htab->hgot->indx = -2;
4662 htab->hplt = elf_link_hash_lookup (elf_hash_table (info),
4663 "_PROCEDURE_LINKAGE_TABLE_",
4664 FALSE, FALSE, FALSE);
4666 htab->hplt->indx = -2;
4667 /* If the PLT is executable then give the symbol function type. */
4668 if (htab->hplt && htab->plt->flags & SEC_CODE)
4669 htab->hplt->type = STT_FUNC;
4672 /* Allocate space for global sym dynamic relocs. */
4673 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4675 if (htab->got != NULL && !htab->is_vxworks)
4677 unsigned int g_o_t = 32768;
4679 /* If we haven't allocated the header, do so now. When we get here,
4680 for old plt/got the got size will be 0 to 32764 (not allocated),
4681 or 32780 to 65536 (header allocated). For new plt/got, the
4682 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4683 if (htab->got->size <= 32768)
4685 g_o_t = htab->got->size;
4688 htab->got->size += htab->got_header_size;
4691 htab->elf.hgot->root.u.def.value = g_o_t;
4694 if (htab->glink != NULL && htab->glink->size != 0)
4696 htab->glink_pltresolve = htab->glink->size;
4697 /* Space for the branch table. */
4698 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4699 /* Pad out to align the start of PLTresolve. */
4700 htab->glink->size += -htab->glink->size & 15;
4701 htab->glink->size += GLINK_PLTRESOLVE;
4704 /* We've now determined the sizes of the various dynamic sections.
4705 Allocate memory for them. */
4707 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4709 bfd_boolean strip_section = TRUE;
4711 if ((s->flags & SEC_LINKER_CREATED) == 0)
4717 || s == htab->sgotplt
4719 || s == htab->dynbss
4720 || s == htab->dynsbss)
4722 /* We'd like to strip these sections if they aren't needed, but if
4723 we've exported dynamic symbols from them we must leave them.
4724 It's too late to tell BFD to get rid of the symbols. */
4725 if ((s == htab->plt || s == htab->got) && htab->hplt != NULL)
4726 strip_section = FALSE;
4727 /* Strip this section if we don't need it; see the
4730 else if (s == htab->sdata[0].section
4731 || s == htab->sdata[1].section)
4733 /* Strip these too. */
4735 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4739 /* Remember whether there are any relocation sections. */
4742 /* We use the reloc_count field as a counter if we need
4743 to copy relocs into the output file. */
4749 /* It's not one of our sections, so don't allocate space. */
4753 if (s->size == 0 && strip_section)
4755 /* If we don't need this section, strip it from the
4756 output file. This is mostly to handle .rela.bss and
4757 .rela.plt. We must create both sections in
4758 create_dynamic_sections, because they must be created
4759 before the linker maps input sections to output
4760 sections. The linker does that before
4761 adjust_dynamic_symbol is called, and it is that
4762 function which decides whether anything needs to go
4763 into these sections. */
4764 s->flags |= SEC_EXCLUDE;
4768 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4771 /* Allocate memory for the section contents. */
4772 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4773 if (s->contents == NULL)
4777 if (htab->elf.dynamic_sections_created)
4779 /* Add some entries to the .dynamic section. We fill in the
4780 values later, in ppc_elf_finish_dynamic_sections, but we
4781 must add the entries now so that we get the correct size for
4782 the .dynamic section. The DT_DEBUG entry is filled in by the
4783 dynamic linker and used by the debugger. */
4784 #define add_dynamic_entry(TAG, VAL) \
4785 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4787 if (info->executable)
4789 if (!add_dynamic_entry (DT_DEBUG, 0))
4793 if (htab->plt != NULL && htab->plt->size != 0)
4795 if (!add_dynamic_entry (DT_PLTGOT, 0)
4796 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4797 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4798 || !add_dynamic_entry (DT_JMPREL, 0))
4802 if (htab->glink != NULL && htab->glink->size != 0)
4804 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4810 if (!add_dynamic_entry (DT_RELA, 0)
4811 || !add_dynamic_entry (DT_RELASZ, 0)
4812 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4816 /* If any dynamic relocs apply to a read-only section, then we
4817 need a DT_TEXTREL entry. */
4818 if ((info->flags & DF_TEXTREL) == 0)
4819 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4822 if ((info->flags & DF_TEXTREL) != 0)
4824 if (!add_dynamic_entry (DT_TEXTREL, 0))
4828 #undef add_dynamic_entry
4833 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4835 static const int shared_stub_entry[] =
4837 0x7c0802a6, /* mflr 0 */
4838 0x429f0005, /* bcl 20, 31, .Lxxx */
4839 0x7d6802a6, /* mflr 11 */
4840 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4841 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4842 0x7c0803a6, /* mtlr 0 */
4843 0x7d6903a6, /* mtctr 11 */
4844 0x4e800420, /* bctr */
4847 static const int stub_entry[] =
4849 0x3d600000, /* lis 11,xxx@ha */
4850 0x396b0000, /* addi 11,11,xxx@l */
4851 0x7d6903a6, /* mtctr 11 */
4852 0x4e800420, /* bctr */
4856 ppc_elf_relax_section (bfd *abfd,
4858 struct bfd_link_info *link_info,
4863 struct one_fixup *next;
4869 Elf_Internal_Shdr *symtab_hdr;
4870 bfd_byte *contents = NULL;
4871 Elf_Internal_Sym *isymbuf = NULL;
4872 Elf_Internal_Rela *internal_relocs = NULL;
4873 Elf_Internal_Rela *irel, *irelend;
4874 struct one_fixup *fixups = NULL;
4875 bfd_boolean changed;
4876 struct ppc_elf_link_hash_table *htab;
4877 bfd_size_type trampoff;
4882 /* Nothing to do if there are no relocations, and no need to do
4883 anything with non-alloc sections. */
4884 if ((isec->flags & SEC_ALLOC) == 0
4885 || (isec->flags & SEC_RELOC) == 0
4886 || isec->reloc_count == 0)
4889 trampoff = (isec->size + 3) & (bfd_vma) -4;
4890 /* Space for a branch around any trampolines. */
4893 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4895 /* Get a copy of the native relocations. */
4896 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4897 link_info->keep_memory);
4898 if (internal_relocs == NULL)
4901 htab = ppc_elf_hash_table (link_info);
4902 got2 = bfd_get_section_by_name (abfd, ".got2");
4904 irelend = internal_relocs + isec->reloc_count;
4905 for (irel = internal_relocs; irel < irelend; irel++)
4907 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4908 bfd_vma symaddr, reladdr, toff, roff;
4910 struct one_fixup *f;
4911 size_t insn_offset = 0;
4912 bfd_vma max_branch_offset, val;
4915 unsigned char sym_type;
4920 case R_PPC_LOCAL24PC:
4921 case R_PPC_PLTREL24:
4922 max_branch_offset = 1 << 25;
4926 case R_PPC_REL14_BRTAKEN:
4927 case R_PPC_REL14_BRNTAKEN:
4928 max_branch_offset = 1 << 15;
4935 /* Get the value of the symbol referred to by the reloc. */
4936 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4938 /* A local symbol. */
4939 Elf_Internal_Sym *isym;
4941 /* Read this BFD's local symbols. */
4942 if (isymbuf == NULL)
4944 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4945 if (isymbuf == NULL)
4946 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4947 symtab_hdr->sh_info, 0,
4952 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4953 if (isym->st_shndx == SHN_UNDEF)
4954 continue; /* We can't do anything with undefined symbols. */
4955 else if (isym->st_shndx == SHN_ABS)
4956 tsec = bfd_abs_section_ptr;
4957 else if (isym->st_shndx == SHN_COMMON)
4958 tsec = bfd_com_section_ptr;
4960 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4962 toff = isym->st_value;
4963 sym_type = ELF_ST_TYPE (isym->st_info);
4967 /* Global symbol handling. */
4969 struct elf_link_hash_entry *h;
4971 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4972 h = elf_sym_hashes (abfd)[indx];
4974 while (h->root.type == bfd_link_hash_indirect
4975 || h->root.type == bfd_link_hash_warning)
4976 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4980 if (r_type == R_PPC_PLTREL24
4981 && htab->plt != NULL)
4983 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4990 toff = ent->glink_offset;
4995 toff = ent->plt.offset;
5001 else if (h->root.type == bfd_link_hash_defined
5002 || h->root.type == bfd_link_hash_defweak)
5004 tsec = h->root.u.def.section;
5005 toff = h->root.u.def.value;
5013 /* If the branch and target are in the same section, you have
5014 no hope of adding stubs. We'll error out later should the
5019 /* There probably isn't any reason to handle symbols in
5020 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5021 attribute for a code section, and we are only looking at
5022 branches. However, implement it correctly here as a
5023 reference for other target relax_section functions. */
5024 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5026 /* At this stage in linking, no SEC_MERGE symbol has been
5027 adjusted, so all references to such symbols need to be
5028 passed through _bfd_merged_section_offset. (Later, in
5029 relocate_section, all SEC_MERGE symbols *except* for
5030 section symbols have been adjusted.)
5032 gas may reduce relocations against symbols in SEC_MERGE
5033 sections to a relocation against the section symbol when
5034 the original addend was zero. When the reloc is against
5035 a section symbol we should include the addend in the
5036 offset passed to _bfd_merged_section_offset, since the
5037 location of interest is the original symbol. On the
5038 other hand, an access to "sym+addend" where "sym" is not
5039 a section symbol should not include the addend; Such an
5040 access is presumed to be an offset from "sym"; The
5041 location of interest is just "sym". */
5042 if (sym_type == STT_SECTION)
5043 toff += irel->r_addend;
5045 toff = _bfd_merged_section_offset (abfd, &tsec,
5046 elf_section_data (tsec)->sec_info,
5049 if (sym_type != STT_SECTION)
5050 toff += irel->r_addend;
5052 /* PLTREL24 addends are special. */
5053 else if (r_type != R_PPC_PLTREL24)
5054 toff += irel->r_addend;
5056 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5058 roff = irel->r_offset;
5059 reladdr = isec->output_section->vma + isec->output_offset + roff;
5061 /* If the branch is in range, no need to do anything. */
5062 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5065 /* Look for an existing fixup to this address. */
5066 for (f = fixups; f ; f = f->next)
5067 if (f->tsec == tsec && f->toff == toff)
5073 unsigned long stub_rtype;
5075 val = trampoff - roff;
5076 if (val >= max_branch_offset)
5077 /* Oh dear, we can't reach a trampoline. Don't try to add
5078 one. We'll report an error later. */
5081 if (link_info->shared)
5083 size = 4 * ARRAY_SIZE (shared_stub_entry);
5085 stub_rtype = R_PPC_RELAX32PC;
5089 size = 4 * ARRAY_SIZE (stub_entry);
5091 stub_rtype = R_PPC_RELAX32;
5094 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5095 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5097 if (tsec == htab->plt
5098 || tsec == htab->glink)
5099 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5101 /* Hijack the old relocation. Since we need two
5102 relocations for this use a "composite" reloc. */
5103 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5105 irel->r_offset = trampoff + insn_offset;
5107 /* Record the fixup so we don't do it again this section. */
5108 f = bfd_malloc (sizeof (*f));
5112 f->trampoff = trampoff;
5119 val = f->trampoff - roff;
5120 if (val >= max_branch_offset)
5123 /* Nop out the reloc, since we're finalizing things here. */
5124 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5127 /* Get the section contents. */
5128 if (contents == NULL)
5130 /* Get cached copy if it exists. */
5131 if (elf_section_data (isec)->this_hdr.contents != NULL)
5132 contents = elf_section_data (isec)->this_hdr.contents;
5135 /* Go get them off disk. */
5136 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5141 /* Fix up the existing branch to hit the trampoline. */
5142 hit_addr = contents + roff;
5146 case R_PPC_LOCAL24PC:
5147 case R_PPC_PLTREL24:
5148 t0 = bfd_get_32 (abfd, hit_addr);
5150 t0 |= val & 0x3fffffc;
5151 bfd_put_32 (abfd, t0, hit_addr);
5155 case R_PPC_REL14_BRTAKEN:
5156 case R_PPC_REL14_BRNTAKEN:
5157 t0 = bfd_get_32 (abfd, hit_addr);
5160 bfd_put_32 (abfd, t0, hit_addr);
5165 /* Write out the trampolines. */
5166 changed = fixups != NULL;
5176 struct one_fixup *f = fixups;
5177 fixups = fixups->next;
5182 contents = bfd_realloc (contents, trampoff);
5183 if (contents == NULL)
5186 isec->size = (isec->size + 3) & (bfd_vma) -4;
5187 /* Branch around the trampolines. */
5188 val = trampoff - isec->size + 0x48000000;
5189 dest = contents + isec->size;
5190 isec->size = trampoff;
5191 bfd_put_32 (abfd, val, dest);
5194 if (link_info->shared)
5196 stub = shared_stub_entry;
5197 size = ARRAY_SIZE (shared_stub_entry);
5202 size = ARRAY_SIZE (stub_entry);
5206 while (dest < contents + trampoff)
5208 bfd_put_32 (abfd, stub[i], dest);
5214 BFD_ASSERT (i == 0);
5218 && symtab_hdr->contents != (unsigned char *) isymbuf)
5220 if (! link_info->keep_memory)
5224 /* Cache the symbols for elf_link_input_bfd. */
5225 symtab_hdr->contents = (unsigned char *) isymbuf;
5229 if (contents != NULL
5230 && elf_section_data (isec)->this_hdr.contents != contents)
5232 if (!changed && !link_info->keep_memory)
5236 /* Cache the section contents for elf_link_input_bfd. */
5237 elf_section_data (isec)->this_hdr.contents = contents;
5241 if (elf_section_data (isec)->relocs != internal_relocs)
5244 free (internal_relocs);
5246 elf_section_data (isec)->relocs = internal_relocs;
5253 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5255 if (contents != NULL
5256 && elf_section_data (isec)->this_hdr.contents != contents)
5258 if (internal_relocs != NULL
5259 && elf_section_data (isec)->relocs != internal_relocs)
5260 free (internal_relocs);
5264 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5265 set here rather than via PROVIDE in the default linker script,
5266 because using PROVIDE inside an output section statement results in
5267 unnecessary output sections. Using PROVIDE outside an output section
5268 statement runs the risk of section alignment affecting where the
5272 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5274 struct ppc_elf_link_hash_table *htab;
5279 htab = ppc_elf_hash_table (info);
5281 for (i = 0; i < 2; i++)
5283 elf_linker_section_t *lsect = &htab->sdata[i];
5287 s = s->output_section;
5289 s = bfd_get_section_by_name (obfd, lsect->name);
5291 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5295 /* VxWorks executables are relocatable, so the sdata base symbols
5296 must be section-relative. */
5298 lsect->sym_val = val + s->vma;
5306 _bfd_elf_provide_symbol (info, lsect->sym_name, val, s);
5310 /* What to do when ld finds relocations against symbols defined in
5311 discarded sections. */
5314 ppc_elf_action_discarded (asection *sec)
5316 if (strcmp (".fixup", sec->name) == 0)
5319 if (strcmp (".got2", sec->name) == 0)
5322 return _bfd_elf_default_action_discarded (sec);
5325 /* Fill in the address for a pointer generated in a linker section. */
5328 elf_finish_pointer_linker_section (bfd *input_bfd,
5329 elf_linker_section_t *lsect,
5330 struct elf_link_hash_entry *h,
5332 const Elf_Internal_Rela *rel)
5334 elf_linker_section_pointers_t *linker_section_ptr;
5336 BFD_ASSERT (lsect != NULL);
5340 /* Handle global symbol. */
5341 struct ppc_elf_link_hash_entry *eh;
5343 eh = (struct ppc_elf_link_hash_entry *) h;
5344 BFD_ASSERT (eh->elf.def_regular);
5345 linker_section_ptr = eh->linker_section_pointer;
5349 /* Handle local symbol. */
5350 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5352 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5353 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5356 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5359 BFD_ASSERT (linker_section_ptr != NULL);
5361 /* Offset will always be a multiple of four, so use the bottom bit
5362 as a "written" flag. */
5363 if ((linker_section_ptr->offset & 1) == 0)
5365 bfd_put_32 (lsect->section->owner,
5366 relocation + linker_section_ptr->addend,
5367 lsect->section->contents + linker_section_ptr->offset);
5368 linker_section_ptr->offset += 1;
5371 relocation = (lsect->section->output_offset
5372 + linker_section_ptr->offset - 1
5377 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5378 lsect->name, (long) relocation, (long) relocation);
5381 /* Subtract out the addend, because it will get added back in by the normal
5383 return relocation - linker_section_ptr->addend;
5386 /* The RELOCATE_SECTION function is called by the ELF backend linker
5387 to handle the relocations for a section.
5389 The relocs are always passed as Rela structures; if the section
5390 actually uses Rel structures, the r_addend field will always be
5393 This function is responsible for adjust the section contents as
5394 necessary, and (if using Rela relocs and generating a
5395 relocatable output file) adjusting the reloc addend as
5398 This function does not have to worry about setting the reloc
5399 address or the reloc symbol index.
5401 LOCAL_SYMS is a pointer to the swapped in local symbols.
5403 LOCAL_SECTIONS is an array giving the section in the input file
5404 corresponding to the st_shndx field of each local symbol.
5406 The global hash table entry for the global symbols can be found
5407 via elf_sym_hashes (input_bfd).
5409 When generating relocatable output, this function must handle
5410 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5411 going to be the section symbol corresponding to the output
5412 section, which means that the addend must be adjusted
5416 ppc_elf_relocate_section (bfd *output_bfd,
5417 struct bfd_link_info *info,
5419 asection *input_section,
5421 Elf_Internal_Rela *relocs,
5422 Elf_Internal_Sym *local_syms,
5423 asection **local_sections)
5425 Elf_Internal_Shdr *symtab_hdr;
5426 struct elf_link_hash_entry **sym_hashes;
5427 struct ppc_elf_link_hash_table *htab;
5428 Elf_Internal_Rela *rel;
5429 Elf_Internal_Rela *relend;
5430 Elf_Internal_Rela outrel;
5432 asection *got2, *sreloc = NULL;
5433 bfd_vma *local_got_offsets;
5434 bfd_boolean ret = TRUE;
5437 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5438 "%ld relocations%s",
5439 input_bfd, input_section,
5440 (long) input_section->reloc_count,
5441 (info->relocatable) ? " (relocatable)" : "");
5444 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5446 if (info->relocatable)
5452 relend = relocs + input_section->reloc_count;
5453 for (; rel < relend; rel++)
5455 enum elf_ppc_reloc_type r_type;
5457 r_type = ELF32_R_TYPE (rel->r_info);
5458 if (r_type == R_PPC_PLTREL24
5459 && rel->r_addend >= 32768)
5461 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5462 addend specifies the GOT pointer offset within .got2. */
5463 rel->r_addend += got2->output_offset;
5469 /* Initialize howto table if not already done. */
5470 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5471 ppc_elf_howto_init ();
5473 htab = ppc_elf_hash_table (info);
5474 local_got_offsets = elf_local_got_offsets (input_bfd);
5475 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5476 sym_hashes = elf_sym_hashes (input_bfd);
5478 relend = relocs + input_section->reloc_count;
5479 for (; rel < relend; rel++)
5481 enum elf_ppc_reloc_type r_type;
5483 bfd_reloc_status_type r;
5484 Elf_Internal_Sym *sym;
5486 struct elf_link_hash_entry *h;
5487 const char *sym_name;
5488 reloc_howto_type *howto;
5489 unsigned long r_symndx;
5491 bfd_vma branch_bit, insn, from;
5492 bfd_boolean unresolved_reloc;
5494 unsigned int tls_type, tls_mask, tls_gd;
5496 r_type = ELF32_R_TYPE (rel->r_info);
5500 unresolved_reloc = FALSE;
5502 r_symndx = ELF32_R_SYM (rel->r_info);
5504 if (r_symndx < symtab_hdr->sh_info)
5506 sym = local_syms + r_symndx;
5507 sec = local_sections[r_symndx];
5508 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5510 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5514 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5515 r_symndx, symtab_hdr, sym_hashes,
5517 unresolved_reloc, warned);
5519 sym_name = h->root.root.string;
5522 /* TLS optimizations. Replace instruction sequences and relocs
5523 based on information we collected in tls_optimize. We edit
5524 RELOCS so that --emit-relocs will output something sensible
5525 for the final instruction stream. */
5528 if (IS_PPC_TLS_RELOC (r_type))
5531 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5532 else if (local_got_offsets != NULL)
5535 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5536 tls_mask = lgot_masks[r_symndx];
5540 /* Ensure reloc mapping code below stays sane. */
5541 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5542 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5543 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5544 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5545 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5546 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5547 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5548 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5555 case R_PPC_GOT_TPREL16:
5556 case R_PPC_GOT_TPREL16_LO:
5558 && (tls_mask & TLS_TPREL) == 0)
5561 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5563 insn |= 0x3c020000; /* addis 0,2,0 */
5564 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5565 r_type = R_PPC_TPREL16_HA;
5566 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5572 && (tls_mask & TLS_TPREL) == 0)
5575 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5576 if ((insn & ((31 << 26) | (31 << 11)))
5577 == ((31 << 26) | (2 << 11)))
5578 rtra = insn & ((1 << 26) - (1 << 16));
5579 else if ((insn & ((31 << 26) | (31 << 16)))
5580 == ((31 << 26) | (2 << 16)))
5581 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5584 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5587 else if ((insn & (31 << 1)) == 23 << 1
5588 && ((insn & (31 << 6)) < 14 << 6
5589 || ((insn & (31 << 6)) >= 16 << 6
5590 && (insn & (31 << 6)) < 24 << 6)))
5591 /* load and store indexed -> dform. */
5592 insn = (32 | ((insn >> 6) & 31)) << 26;
5593 else if ((insn & (31 << 1)) == 21 << 1
5594 && (insn & (0x1a << 6)) == 0)
5595 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5596 insn = (((58 | ((insn >> 6) & 4)) << 26)
5597 | ((insn >> 6) & 1));
5598 else if ((insn & (31 << 1)) == 21 << 1
5599 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5601 insn = (58 << 26) | 2;
5605 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5606 r_type = R_PPC_TPREL16_LO;
5607 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5608 /* Was PPC_TLS which sits on insn boundary, now
5609 PPC_TPREL16_LO which is at insn+2. */
5614 case R_PPC_GOT_TLSGD16_HI:
5615 case R_PPC_GOT_TLSGD16_HA:
5616 tls_gd = TLS_TPRELGD;
5617 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5621 case R_PPC_GOT_TLSLD16_HI:
5622 case R_PPC_GOT_TLSLD16_HA:
5623 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5626 if ((tls_mask & tls_gd) != 0)
5627 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5628 + R_PPC_GOT_TPREL16);
5631 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5633 r_type = R_PPC_NONE;
5635 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5639 case R_PPC_GOT_TLSGD16:
5640 case R_PPC_GOT_TLSGD16_LO:
5641 tls_gd = TLS_TPRELGD;
5642 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5643 goto tls_get_addr_check;
5646 case R_PPC_GOT_TLSLD16:
5647 case R_PPC_GOT_TLSLD16_LO:
5648 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5651 if (rel + 1 < relend)
5653 enum elf_ppc_reloc_type r_type2;
5654 unsigned long r_symndx2;
5655 struct elf_link_hash_entry *h2;
5656 bfd_vma insn1, insn2;
5659 /* The next instruction should be a call to
5660 __tls_get_addr. Peek at the reloc to be sure. */
5661 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5662 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5663 if (r_symndx2 < symtab_hdr->sh_info
5664 || (r_type2 != R_PPC_REL14
5665 && r_type2 != R_PPC_REL14_BRTAKEN
5666 && r_type2 != R_PPC_REL14_BRNTAKEN
5667 && r_type2 != R_PPC_REL24
5668 && r_type2 != R_PPC_PLTREL24))
5671 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5672 while (h2->root.type == bfd_link_hash_indirect
5673 || h2->root.type == bfd_link_hash_warning)
5674 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5675 if (h2 == NULL || h2 != htab->tls_get_addr)
5678 /* OK, it checks out. Replace the call. */
5679 offset = rel[1].r_offset;
5680 insn1 = bfd_get_32 (output_bfd,
5681 contents + rel->r_offset - 2);
5682 if ((tls_mask & tls_gd) != 0)
5685 insn1 &= (1 << 26) - 1;
5686 insn1 |= 32 << 26; /* lwz */
5687 insn2 = 0x7c631214; /* add 3,3,2 */
5688 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5689 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5690 + R_PPC_GOT_TPREL16);
5691 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5696 insn1 = 0x3c620000; /* addis 3,2,0 */
5697 insn2 = 0x38630000; /* addi 3,3,0 */
5700 /* Was an LD reloc. */
5702 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5703 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5705 r_type = R_PPC_TPREL16_HA;
5706 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5707 rel[1].r_info = ELF32_R_INFO (r_symndx,
5709 rel[1].r_offset += 2;
5711 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5712 bfd_put_32 (output_bfd, insn2, contents + offset);
5715 /* We changed the symbol on an LD reloc. Start over
5716 in order to get h, sym, sec etc. right. */
5725 /* Handle other relocations that tweak non-addend part of insn. */
5732 /* Branch taken prediction relocations. */
5733 case R_PPC_ADDR14_BRTAKEN:
5734 case R_PPC_REL14_BRTAKEN:
5735 branch_bit = BRANCH_PREDICT_BIT;
5738 /* Branch not taken prediction relocations. */
5739 case R_PPC_ADDR14_BRNTAKEN:
5740 case R_PPC_REL14_BRNTAKEN:
5741 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5742 insn &= ~BRANCH_PREDICT_BIT;
5745 from = (rel->r_offset
5746 + input_section->output_offset
5747 + input_section->output_section->vma);
5749 /* Invert 'y' bit if not the default. */
5750 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5751 insn ^= BRANCH_PREDICT_BIT;
5753 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5757 addend = rel->r_addend;
5760 if (r_type < R_PPC_max)
5761 howto = ppc_elf_howto_table[r_type];
5765 (*_bfd_error_handler)
5766 (_("%B: unknown relocation type %d for symbol %s"),
5767 input_bfd, (int) r_type, sym_name);
5769 bfd_set_error (bfd_error_bad_value);
5775 case R_PPC_EMB_MRKREF:
5776 case R_PPC_GNU_VTINHERIT:
5777 case R_PPC_GNU_VTENTRY:
5780 /* GOT16 relocations. Like an ADDR16 using the symbol's
5781 address in the GOT as relocation value instead of the
5782 symbol's value itself. Also, create a GOT entry for the
5783 symbol and put the symbol value there. */
5784 case R_PPC_GOT_TLSGD16:
5785 case R_PPC_GOT_TLSGD16_LO:
5786 case R_PPC_GOT_TLSGD16_HI:
5787 case R_PPC_GOT_TLSGD16_HA:
5788 tls_type = TLS_TLS | TLS_GD;
5791 case R_PPC_GOT_TLSLD16:
5792 case R_PPC_GOT_TLSLD16_LO:
5793 case R_PPC_GOT_TLSLD16_HI:
5794 case R_PPC_GOT_TLSLD16_HA:
5795 tls_type = TLS_TLS | TLS_LD;
5798 case R_PPC_GOT_TPREL16:
5799 case R_PPC_GOT_TPREL16_LO:
5800 case R_PPC_GOT_TPREL16_HI:
5801 case R_PPC_GOT_TPREL16_HA:
5802 tls_type = TLS_TLS | TLS_TPREL;
5805 case R_PPC_GOT_DTPREL16:
5806 case R_PPC_GOT_DTPREL16_LO:
5807 case R_PPC_GOT_DTPREL16_HI:
5808 case R_PPC_GOT_DTPREL16_HA:
5809 tls_type = TLS_TLS | TLS_DTPREL;
5813 case R_PPC_GOT16_LO:
5814 case R_PPC_GOT16_HI:
5815 case R_PPC_GOT16_HA:
5818 /* Relocation is to the entry for this symbol in the global
5824 if (htab->got == NULL)
5828 if (tls_type == (TLS_TLS | TLS_LD)
5830 || !h->def_dynamic))
5831 offp = &htab->tlsld_got.offset;
5835 dyn = htab->elf.dynamic_sections_created;
5836 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5838 && SYMBOL_REFERENCES_LOCAL (info, h)))
5839 /* This is actually a static link, or it is a
5840 -Bsymbolic link and the symbol is defined
5841 locally, or the symbol was forced to be local
5842 because of a version file. */
5847 unresolved_reloc = FALSE;
5849 offp = &h->got.offset;
5853 if (local_got_offsets == NULL)
5855 offp = &local_got_offsets[r_symndx];
5858 /* The offset must always be a multiple of 4. We use the
5859 least significant bit to record whether we have already
5860 processed this entry. */
5866 unsigned int tls_m = (tls_mask
5867 & (TLS_LD | TLS_GD | TLS_DTPREL
5868 | TLS_TPREL | TLS_TPRELGD));
5870 if (offp == &htab->tlsld_got.offset)
5876 /* We might have multiple got entries for this sym.
5877 Initialize them all. */
5882 if ((tls_m & TLS_LD) != 0)
5884 tls_ty = TLS_TLS | TLS_LD;
5887 else if ((tls_m & TLS_GD) != 0)
5889 tls_ty = TLS_TLS | TLS_GD;
5892 else if ((tls_m & TLS_DTPREL) != 0)
5894 tls_ty = TLS_TLS | TLS_DTPREL;
5895 tls_m &= ~TLS_DTPREL;
5897 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5899 tls_ty = TLS_TLS | TLS_TPREL;
5903 /* Generate relocs for the dynamic linker. */
5904 if ((info->shared || indx != 0)
5906 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5907 || h->root.type != bfd_link_hash_undefweak))
5909 outrel.r_offset = (htab->got->output_section->vma
5910 + htab->got->output_offset
5912 outrel.r_addend = 0;
5913 if (tls_ty & (TLS_LD | TLS_GD))
5915 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5916 if (tls_ty == (TLS_TLS | TLS_GD))
5918 loc = htab->relgot->contents;
5919 loc += (htab->relgot->reloc_count++
5920 * sizeof (Elf32_External_Rela));
5921 bfd_elf32_swap_reloca_out (output_bfd,
5923 outrel.r_offset += 4;
5925 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5928 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5929 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5930 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5931 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5933 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5935 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5938 outrel.r_addend += relocation;
5939 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5940 outrel.r_addend -= htab->elf.tls_sec->vma;
5942 loc = htab->relgot->contents;
5943 loc += (htab->relgot->reloc_count++
5944 * sizeof (Elf32_External_Rela));
5945 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5948 /* Init the .got section contents if we're not
5949 emitting a reloc. */
5952 bfd_vma value = relocation;
5954 if (tls_ty == (TLS_TLS | TLS_LD))
5956 else if (tls_ty != 0)
5958 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5959 if (tls_ty == (TLS_TLS | TLS_TPREL))
5960 value += DTP_OFFSET - TP_OFFSET;
5962 if (tls_ty == (TLS_TLS | TLS_GD))
5964 bfd_put_32 (output_bfd, value,
5965 htab->got->contents + off + 4);
5969 bfd_put_32 (output_bfd, value,
5970 htab->got->contents + off);
5974 if (tls_ty & (TLS_LD | TLS_GD))
5983 if (off >= (bfd_vma) -2)
5986 if ((tls_type & TLS_TLS) != 0)
5988 if (tls_type != (TLS_TLS | TLS_LD))
5990 if ((tls_mask & TLS_LD) != 0
5992 || !h->def_dynamic))
5994 if (tls_type != (TLS_TLS | TLS_GD))
5996 if ((tls_mask & TLS_GD) != 0)
5998 if (tls_type != (TLS_TLS | TLS_DTPREL))
6000 if ((tls_mask & TLS_DTPREL) != 0)
6007 relocation = htab->got->output_offset + off;
6008 relocation -= htab->elf.hgot->root.u.def.value;
6010 /* Addends on got relocations don't make much sense.
6011 x+off@got is actually x@got+off, and since the got is
6012 generated by a hash table traversal, the value in the
6013 got at entry m+n bears little relation to the entry m. */
6015 (*_bfd_error_handler)
6016 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6019 (long) rel->r_offset,
6025 /* Relocations that need no special processing. */
6026 case R_PPC_LOCAL24PC:
6027 /* It makes no sense to point a local relocation
6028 at a symbol not in this object. */
6029 if (unresolved_reloc)
6031 if (! (*info->callbacks->undefined_symbol) (info,
6032 h->root.root.string,
6042 case R_PPC_DTPREL16:
6043 case R_PPC_DTPREL16_LO:
6044 case R_PPC_DTPREL16_HI:
6045 case R_PPC_DTPREL16_HA:
6046 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6049 /* Relocations that may need to be propagated if this is a shared
6052 case R_PPC_TPREL16_LO:
6053 case R_PPC_TPREL16_HI:
6054 case R_PPC_TPREL16_HA:
6055 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6056 /* The TPREL16 relocs shouldn't really be used in shared
6057 libs as they will result in DT_TEXTREL being set, but
6058 support them anyway. */
6062 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6065 case R_PPC_DTPREL32:
6066 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6069 case R_PPC_DTPMOD32:
6075 case R_PPC_REL16_LO:
6076 case R_PPC_REL16_HI:
6077 case R_PPC_REL16_HA:
6083 case R_PPC_REL14_BRTAKEN:
6084 case R_PPC_REL14_BRNTAKEN:
6085 /* If these relocations are not to a named symbol, they can be
6086 handled right here, no need to bother the dynamic linker. */
6087 if (SYMBOL_REFERENCES_LOCAL (info, h)
6088 || h == htab->elf.hgot)
6092 /* Relocations that always need to be propagated if this is a shared
6097 case R_PPC_ADDR16_LO:
6098 case R_PPC_ADDR16_HI:
6099 case R_PPC_ADDR16_HA:
6101 case R_PPC_ADDR14_BRTAKEN:
6102 case R_PPC_ADDR14_BRNTAKEN:
6105 /* r_symndx will be zero only for relocs against symbols
6106 from removed linkonce sections, or sections discarded by
6113 if ((input_section->flags & SEC_ALLOC) == 0)
6119 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6120 || h->root.type != bfd_link_hash_undefweak)
6121 && (MUST_BE_DYN_RELOC (r_type)
6122 || !SYMBOL_CALLS_LOCAL (info, h)))
6123 || (ELIMINATE_COPY_RELOCS
6129 && !h->def_regular))
6134 fprintf (stderr, "ppc_elf_relocate_section needs to "
6135 "create relocation for %s\n",
6136 (h && h->root.root.string
6137 ? h->root.root.string : "<unknown>"));
6140 /* When generating a shared object, these relocations
6141 are copied into the output file to be resolved at run
6147 name = (bfd_elf_string_from_elf_section
6149 elf_elfheader (input_bfd)->e_shstrndx,
6150 elf_section_data (input_section)->rel_hdr.sh_name));
6154 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6155 && strcmp (bfd_get_section_name (input_bfd,
6159 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6160 BFD_ASSERT (sreloc != NULL);
6166 _bfd_elf_section_offset (output_bfd, info, input_section,
6168 if (outrel.r_offset == (bfd_vma) -1
6169 || outrel.r_offset == (bfd_vma) -2)
6170 skip = (int) outrel.r_offset;
6171 outrel.r_offset += (input_section->output_section->vma
6172 + input_section->output_offset);
6175 memset (&outrel, 0, sizeof outrel);
6176 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6178 unresolved_reloc = FALSE;
6179 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6180 outrel.r_addend = rel->r_addend;
6184 outrel.r_addend = relocation + rel->r_addend;
6186 if (r_type == R_PPC_ADDR32)
6187 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6192 if (bfd_is_abs_section (sec))
6194 else if (sec == NULL || sec->owner == NULL)
6196 bfd_set_error (bfd_error_bad_value);
6203 /* We are turning this relocation into one
6204 against a section symbol. It would be
6205 proper to subtract the symbol's value,
6206 osec->vma, from the emitted reloc addend,
6207 but ld.so expects buggy relocs. */
6208 osec = sec->output_section;
6209 indx = elf_section_data (osec)->dynindx;
6210 BFD_ASSERT (indx > 0);
6213 printf ("indx=%d section=%s flags=%08x name=%s\n",
6214 indx, osec->name, osec->flags,
6215 h->root.root.string);
6219 outrel.r_info = ELF32_R_INFO (indx, r_type);
6223 loc = sreloc->contents;
6224 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6225 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6230 /* This reloc will be computed at runtime. We clear the memory
6231 so that it contains predictable value. */
6233 && ((input_section->flags & SEC_ALLOC) != 0
6234 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6236 relocation = howto->pc_relative ? outrel.r_offset : 0;
6243 case R_PPC_RELAX32PC_PLT:
6244 case R_PPC_RELAX32_PLT:
6246 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6249 relocation = (htab->glink->output_section->vma
6250 + htab->glink->output_offset
6251 + ent->glink_offset);
6253 relocation = (htab->plt->output_section->vma
6254 + htab->plt->output_offset
6258 if (r_type == R_PPC_RELAX32_PLT)
6262 case R_PPC_RELAX32PC:
6263 relocation -= (input_section->output_section->vma
6264 + input_section->output_offset
6265 + rel->r_offset - 4);
6274 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6275 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6277 /* We're clearing the bits for R_PPC_ADDR16_HA
6278 and R_PPC_ADDR16_LO here. */
6282 /* t0 is HA, t1 is LO */
6283 relocation += addend;
6284 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6285 t1 |= relocation & 0xffff;
6287 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6288 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6292 /* Indirect .sdata relocation. */
6293 case R_PPC_EMB_SDAI16:
6294 BFD_ASSERT (htab->sdata[0].section != NULL);
6296 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6297 h, relocation, rel);
6300 /* Indirect .sdata2 relocation. */
6301 case R_PPC_EMB_SDA2I16:
6302 BFD_ASSERT (htab->sdata[1].section != NULL);
6304 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6305 h, relocation, rel);
6308 /* Handle the TOC16 reloc. We want to use the offset within the .got
6309 section, not the actual VMA. This is appropriate when generating
6310 an embedded ELF object, for which the .got section acts like the
6311 AIX .toc section. */
6312 case R_PPC_TOC16: /* phony GOT16 relocations */
6313 BFD_ASSERT (sec != NULL);
6314 BFD_ASSERT (bfd_is_und_section (sec)
6315 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6316 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6318 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6321 case R_PPC_PLTREL24:
6322 /* Relocation is to the entry for this symbol in the
6323 procedure linkage table. */
6325 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6329 || htab->plt == NULL)
6331 /* We didn't make a PLT entry for this symbol. This
6332 happens when statically linking PIC code, or when
6333 using -Bsymbolic. */
6337 unresolved_reloc = FALSE;
6339 relocation = (htab->glink->output_section->vma
6340 + htab->glink->output_offset
6341 + ent->glink_offset);
6343 relocation = (htab->plt->output_section->vma
6344 + htab->plt->output_offset
6349 /* Relocate against _SDA_BASE_. */
6350 case R_PPC_SDAREL16:
6354 BFD_ASSERT (sec != NULL);
6355 name = bfd_get_section_name (abfd, sec->output_section);
6356 if (! ((strncmp (name, ".sdata", 6) == 0
6357 && (name[6] == 0 || name[6] == '.'))
6358 || (strncmp (name, ".sbss", 5) == 0
6359 && (name[5] == 0 || name[5] == '.'))))
6361 (*_bfd_error_handler)
6362 (_("%B: the target (%s) of a %s relocation is "
6363 "in the wrong output section (%s)"),
6369 addend -= htab->sdata[0].sym_val;
6373 /* Relocate against _SDA2_BASE_. */
6374 case R_PPC_EMB_SDA2REL:
6378 BFD_ASSERT (sec != NULL);
6379 name = bfd_get_section_name (abfd, sec->output_section);
6380 if (! (strncmp (name, ".sdata2", 7) == 0
6381 || strncmp (name, ".sbss2", 6) == 0))
6383 (*_bfd_error_handler)
6384 (_("%B: the target (%s) of a %s relocation is "
6385 "in the wrong output section (%s)"),
6391 bfd_set_error (bfd_error_bad_value);
6395 addend -= htab->sdata[1].sym_val;
6399 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6400 case R_PPC_EMB_SDA21:
6401 case R_PPC_EMB_RELSDA:
6406 BFD_ASSERT (sec != NULL);
6407 name = bfd_get_section_name (abfd, sec->output_section);
6408 if (((strncmp (name, ".sdata", 6) == 0
6409 && (name[6] == 0 || name[6] == '.'))
6410 || (strncmp (name, ".sbss", 5) == 0
6411 && (name[5] == 0 || name[5] == '.'))))
6414 addend -= htab->sdata[0].sym_val;
6417 else if (strncmp (name, ".sdata2", 7) == 0
6418 || strncmp (name, ".sbss2", 6) == 0)
6421 addend -= htab->sdata[1].sym_val;
6424 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6425 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6432 (*_bfd_error_handler)
6433 (_("%B: the target (%s) of a %s relocation is "
6434 "in the wrong output section (%s)"),
6440 bfd_set_error (bfd_error_bad_value);
6445 if (r_type == R_PPC_EMB_SDA21)
6446 { /* fill in register field */
6447 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6448 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6449 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6454 /* Relocate against the beginning of the section. */
6456 case R_PPC_SECTOFF_LO:
6457 case R_PPC_SECTOFF_HI:
6458 case R_PPC_SECTOFF_HA:
6459 BFD_ASSERT (sec != NULL);
6460 addend -= sec->output_section->vma;
6463 /* Negative relocations. */
6464 case R_PPC_EMB_NADDR32:
6465 case R_PPC_EMB_NADDR16:
6466 case R_PPC_EMB_NADDR16_LO:
6467 case R_PPC_EMB_NADDR16_HI:
6468 case R_PPC_EMB_NADDR16_HA:
6469 addend -= 2 * relocation;
6473 case R_PPC_GLOB_DAT:
6474 case R_PPC_JMP_SLOT:
6475 case R_PPC_RELATIVE:
6477 case R_PPC_PLTREL32:
6478 case R_PPC_PLT16_LO:
6479 case R_PPC_PLT16_HI:
6480 case R_PPC_PLT16_HA:
6482 case R_PPC_EMB_RELSEC16:
6483 case R_PPC_EMB_RELST_LO:
6484 case R_PPC_EMB_RELST_HI:
6485 case R_PPC_EMB_RELST_HA:
6486 case R_PPC_EMB_BIT_FLD:
6487 (*_bfd_error_handler)
6488 (_("%B: relocation %s is not yet supported for symbol %s."),
6493 bfd_set_error (bfd_error_invalid_operation);
6498 /* Do any further special processing. */
6504 case R_PPC_ADDR16_HA:
6505 case R_PPC_REL16_HA:
6506 case R_PPC_GOT16_HA:
6507 case R_PPC_PLT16_HA:
6508 case R_PPC_SECTOFF_HA:
6509 case R_PPC_TPREL16_HA:
6510 case R_PPC_DTPREL16_HA:
6511 case R_PPC_GOT_TLSGD16_HA:
6512 case R_PPC_GOT_TLSLD16_HA:
6513 case R_PPC_GOT_TPREL16_HA:
6514 case R_PPC_GOT_DTPREL16_HA:
6515 case R_PPC_EMB_NADDR16_HA:
6516 case R_PPC_EMB_RELST_HA:
6517 /* It's just possible that this symbol is a weak symbol
6518 that's not actually defined anywhere. In that case,
6519 'sec' would be NULL, and we should leave the symbol
6520 alone (it will be set to zero elsewhere in the link). */
6522 /* Add 0x10000 if sign bit in 0:15 is set.
6523 Bits 0:15 are not used. */
6529 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6530 "offset = %ld, addend = %ld\n",
6535 (long) rel->r_offset,
6539 if (unresolved_reloc
6540 && !((input_section->flags & SEC_DEBUGGING) != 0
6543 (*_bfd_error_handler)
6544 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6547 (long) rel->r_offset,
6553 r = _bfd_final_link_relocate (howto,
6561 if (r != bfd_reloc_ok)
6563 if (r == bfd_reloc_overflow)
6568 && h->root.type == bfd_link_hash_undefweak
6569 && howto->pc_relative)
6571 /* Assume this is a call protected by other code that
6572 detect the symbol is undefined. If this is the case,
6573 we can safely ignore the overflow. If not, the
6574 program is hosed anyway, and a little warning isn't
6580 if (! (*info->callbacks->reloc_overflow) (info,
6581 (h ? &h->root : NULL),
6592 (*_bfd_error_handler)
6593 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6594 input_bfd, input_section,
6595 (long) rel->r_offset, howto->name, sym_name, (int) r);
6602 fprintf (stderr, "\n");
6608 #define PPC_LO(v) ((v) & 0xffff)
6609 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6610 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6612 /* Finish up dynamic symbol handling. We set the contents of various
6613 dynamic sections here. */
6616 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6617 struct bfd_link_info *info,
6618 struct elf_link_hash_entry *h,
6619 Elf_Internal_Sym *sym)
6621 struct ppc_elf_link_hash_table *htab;
6622 struct plt_entry *ent;
6623 bfd_boolean doneone;
6626 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6627 h->root.root.string);
6630 htab = ppc_elf_hash_table (info);
6631 BFD_ASSERT (htab->elf.dynobj != NULL);
6634 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6635 if (ent->plt.offset != (bfd_vma) -1)
6639 Elf_Internal_Rela rela;
6641 bfd_vma reloc_index;
6643 if (!(htab->old_plt || htab->is_vxworks))
6644 reloc_index = ent->plt.offset / 4;
6647 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6648 / htab->plt_slot_size);
6649 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6650 && !htab->is_vxworks)
6651 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6654 /* This symbol has an entry in the procedure linkage table.
6656 if (htab->is_vxworks)
6659 const bfd_vma *plt_entry;
6661 /* The first three entries in .got.plt are reserved. */
6662 got_offset = (reloc_index + 3) * 4;
6664 /* Use the right PLT. */
6665 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6666 : ppc_elf_vxworks_plt_entry;
6668 /* Fill in the .plt on VxWorks. */
6671 bfd_vma got_offset_hi = (got_offset >> 16)
6672 + ((got_offset & 0x8000) >> 15);
6674 bfd_put_32 (output_bfd,
6675 plt_entry[0] | (got_offset_hi & 0xffff),
6676 htab->plt->contents + ent->plt.offset + 0);
6677 bfd_put_32 (output_bfd,
6678 plt_entry[1] | (got_offset & 0xffff),
6679 htab->plt->contents + ent->plt.offset + 4);
6683 bfd_vma got_loc = (got_offset
6684 + htab->hgot->root.u.def.value
6685 + htab->hgot->root.u.def.section->output_offset
6686 + htab->hgot->root.u.def.section->output_section->vma);
6687 bfd_vma got_loc_hi = (got_loc >> 16)
6688 + ((got_loc & 0x8000) >> 15);
6690 bfd_put_32 (output_bfd,
6691 plt_entry[0] | (got_loc_hi & 0xffff),
6692 htab->plt->contents + ent->plt.offset + 0);
6693 bfd_put_32 (output_bfd,
6694 plt_entry[1] | (got_loc & 0xffff),
6695 htab->plt->contents + ent->plt.offset + 4);
6698 bfd_put_32 (output_bfd, plt_entry[2],
6699 htab->plt->contents + ent->plt.offset + 8);
6700 bfd_put_32 (output_bfd, plt_entry[3],
6701 htab->plt->contents + ent->plt.offset + 12);
6703 /* This instruction is an immediate load. The value loaded is
6704 the byte offset of the R_PPC_JMP_SLOT relocation from the
6705 start of the .rela.plt section. The value is stored in the
6706 low-order 16 bits of the load instruction. */
6707 /* NOTE: It appears that this is now an index rather than a
6708 prescaled offset. */
6709 bfd_put_32 (output_bfd,
6710 plt_entry[4] | reloc_index,
6711 htab->plt->contents + ent->plt.offset + 16);
6712 /* This instruction is a PC-relative branch whose target is
6713 the start of the PLT section. The address of this branch
6714 instruction is 20 bytes beyond the start of this PLT entry.
6715 The address is encoded in bits 6-29, inclusive. The value
6716 stored is right-shifted by two bits, permitting a 26-bit
6718 bfd_put_32 (output_bfd,
6720 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6721 htab->plt->contents + ent->plt.offset + 20);
6722 bfd_put_32 (output_bfd, plt_entry[6],
6723 htab->plt->contents + ent->plt.offset + 24);
6724 bfd_put_32 (output_bfd, plt_entry[7],
6725 htab->plt->contents + ent->plt.offset + 28);
6727 /* Fill in the GOT entry corresponding to this PLT slot with
6728 the address immediately after the the "bctr" instruction
6729 in this PLT entry. */
6730 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6731 + htab->plt->output_offset
6732 + ent->plt.offset + 16),
6733 htab->sgotplt->contents + got_offset);
6737 /* Fill in a couple of entries in .rela.plt.unloaded. */
6738 loc = htab->srelplt2->contents
6739 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6740 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6741 * sizeof (Elf32_External_Rela));
6743 /* Provide the @ha relocation for the first instruction. */
6744 rela.r_offset = (htab->plt->output_section->vma
6745 + htab->plt->output_offset
6746 + ent->plt.offset + 2);
6747 rela.r_info = ELF32_R_INFO (htab->hgot->indx,
6749 rela.r_addend = got_offset;
6750 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6751 loc += sizeof (Elf32_External_Rela);
6753 /* Provide the @l relocation for the second instruction. */
6754 rela.r_offset = (htab->plt->output_section->vma
6755 + htab->plt->output_offset
6756 + ent->plt.offset + 6);
6757 rela.r_info = ELF32_R_INFO (htab->hgot->indx,
6759 rela.r_addend = got_offset;
6760 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6761 loc += sizeof (Elf32_External_Rela);
6763 /* Provide a relocation for the GOT entry corresponding to this
6764 PLT slot. Point it at the middle of the .plt entry. */
6765 rela.r_offset = (htab->sgotplt->output_section->vma
6766 + htab->sgotplt->output_offset
6768 rela.r_info = ELF32_R_INFO (htab->hplt->indx,
6770 rela.r_addend = ent->plt.offset + 16;
6771 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6774 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6775 In particular, the offset for the relocation is not the
6776 address of the PLT entry for this function, as specified
6777 by the ABI. Instead, the offset is set to the address of
6778 the GOT slot for this function. See EABI 4.4.4.1. */
6779 rela.r_offset = (htab->sgotplt->output_section->vma
6780 + htab->sgotplt->output_offset
6786 rela.r_offset = (htab->plt->output_section->vma
6787 + htab->plt->output_offset
6791 /* We don't need to fill in the .plt. The ppc dynamic
6792 linker will fill it in. */
6796 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6797 + htab->glink->output_section->vma
6798 + htab->glink->output_offset);
6799 bfd_put_32 (output_bfd, val,
6800 htab->plt->contents + ent->plt.offset);
6804 /* Fill in the entry in the .rela.plt section. */
6805 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6808 loc = (htab->relplt->contents
6809 + reloc_index * sizeof (Elf32_External_Rela));
6810 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6812 if (!h->def_regular)
6814 /* Mark the symbol as undefined, rather than as defined in
6815 the .plt section. Leave the value alone. */
6816 sym->st_shndx = SHN_UNDEF;
6817 /* If the symbol is weak, we do need to clear the value.
6818 Otherwise, the PLT entry would provide a definition for
6819 the symbol even if the symbol wasn't defined anywhere,
6820 and so the symbol would never be NULL. */
6821 if (!h->ref_regular_nonweak)
6832 plt = (ent->plt.offset
6833 + htab->plt->output_section->vma
6834 + htab->plt->output_offset);
6835 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6837 if (info->shared || info->pie)
6841 if (ent->addend >= 32768)
6843 + ent->sec->output_section->vma
6844 + ent->sec->output_offset);
6845 else if (htab->elf.hgot != NULL)
6846 got = (htab->elf.hgot->root.u.def.value
6847 + htab->elf.hgot->root.u.def.section->output_section->vma
6848 + htab->elf.hgot->root.u.def.section->output_offset);
6852 if (plt + 0x8000 < 0x10000)
6854 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6856 bfd_put_32 (output_bfd, MTCTR_11, p);
6858 bfd_put_32 (output_bfd, BCTR, p);
6860 bfd_put_32 (output_bfd, NOP, p);
6865 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6867 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6869 bfd_put_32 (output_bfd, MTCTR_11, p);
6871 bfd_put_32 (output_bfd, BCTR, p);
6877 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6879 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6881 bfd_put_32 (output_bfd, MTCTR_11, p);
6883 bfd_put_32 (output_bfd, BCTR, p);
6886 /* We only need one non-PIC glink stub. */
6897 Elf_Internal_Rela rela;
6900 /* This symbols needs a copy reloc. Set it up. */
6903 fprintf (stderr, ", copy");
6906 BFD_ASSERT (h->dynindx != -1);
6908 if (ppc_elf_hash_entry (h)->has_sda_refs)
6912 BFD_ASSERT (s != NULL);
6914 rela.r_offset = (h->root.u.def.value
6915 + h->root.u.def.section->output_section->vma
6916 + h->root.u.def.section->output_offset);
6917 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6919 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6920 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6924 fprintf (stderr, "\n");
6927 /* Mark some specially defined symbols as absolute. */
6928 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6929 || (!htab->is_vxworks
6930 && (h == htab->elf.hgot
6931 || strcmp (h->root.root.string,
6932 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
6933 sym->st_shndx = SHN_ABS;
6938 static enum elf_reloc_type_class
6939 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6941 switch (ELF32_R_TYPE (rela->r_info))
6943 case R_PPC_RELATIVE:
6944 return reloc_class_relative;
6947 case R_PPC_JMP_SLOT:
6948 return reloc_class_plt;
6950 return reloc_class_copy;
6952 return reloc_class_normal;
6956 /* Finish up the dynamic sections. */
6959 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6960 struct bfd_link_info *info)
6964 struct ppc_elf_link_hash_table *htab;
6969 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6972 htab = ppc_elf_hash_table (info);
6973 dynobj = elf_hash_table (info)->dynobj;
6974 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6975 if (htab->is_vxworks)
6976 splt = bfd_get_section_by_name (dynobj, ".plt");
6981 if (htab->elf.hgot != NULL)
6982 got = (htab->elf.hgot->root.u.def.value
6983 + htab->elf.hgot->root.u.def.section->output_section->vma
6984 + htab->elf.hgot->root.u.def.section->output_offset);
6986 if (htab->elf.dynamic_sections_created)
6988 Elf32_External_Dyn *dyncon, *dynconend;
6990 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6992 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6993 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6994 for (; dyncon < dynconend; dyncon++)
6996 Elf_Internal_Dyn dyn;
6999 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7004 if (htab->is_vxworks)
7008 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7012 dyn.d_un.d_val = htab->relplt->size;
7017 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7021 dyn.d_un.d_ptr = got;
7025 if (htab->is_vxworks)
7028 dyn.d_un.d_ptr -= htab->relplt->size;
7037 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7041 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7042 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7043 if (htab->got != NULL)
7045 unsigned char *p = htab->got->contents;
7048 p += elf_hash_table (info)->hgot->root.u.def.value;
7049 if (htab->old_plt && !htab->is_vxworks)
7050 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7054 val = sdyn->output_section->vma + sdyn->output_offset;
7055 bfd_put_32 (output_bfd, val, p);
7057 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7060 /* Fill in the first entry in the VxWorks procedure linkage table. */
7061 if (splt && splt->size > 0)
7063 /* Use the right PLT. */
7064 static const bfd_vma *plt_entry = NULL;
7065 plt_entry = info->shared ?
7066 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7071 (htab->hgot->root.u.def.section->output_section->vma
7072 + htab->hgot->root.u.def.section->output_offset
7073 + htab->hgot->root.u.def.value);
7074 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7076 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7077 splt->contents + 0);
7078 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7079 splt->contents + 4);
7083 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7084 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7086 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7087 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7088 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7089 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7090 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7091 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7095 Elf_Internal_Rela rela;
7098 loc = htab->srelplt2->contents;
7100 /* Output the @ha relocation for the first instruction. */
7101 rela.r_offset = (htab->plt->output_section->vma
7102 + htab->plt->output_offset
7104 rela.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_HA);
7106 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7107 loc += sizeof (Elf32_External_Rela);
7109 /* Output the @l relocation for the second instruction. */
7110 rela.r_offset = (htab->plt->output_section->vma
7111 + htab->plt->output_offset
7113 rela.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_LO);
7115 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7116 loc += sizeof (Elf32_External_Rela);
7118 /* Fix up the remaining relocations. They may have the wrong
7119 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7120 in which symbols were output. */
7121 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7123 Elf_Internal_Rela rel;
7125 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7126 rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_HA);
7127 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7128 loc += sizeof (Elf32_External_Rela);
7130 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7131 rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_LO);
7132 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7133 loc += sizeof (Elf32_External_Rela);
7135 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7136 rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_PPC_ADDR32);
7137 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7138 loc += sizeof (Elf32_External_Rela);
7143 if (htab->glink != NULL && htab->glink->contents != NULL)
7146 unsigned char *endp;
7151 * PIC glink code is the following:
7153 * # ith PLT code stub.
7154 * addis 11,30,(plt+(i-1)*4-got)@ha
7155 * lwz 11,(plt+(i-1)*4-got)@l(11)
7159 * # A table of branches, one for each plt entry.
7160 * # The idea is that the plt call stub loads ctr (and r11) with these
7161 * # addresses, so (r11 - res_0) gives the plt index * 4.
7162 * res_0: b PLTresolve
7163 * res_1: b PLTresolve
7165 * # Some number of entries towards the end can be nops
7171 * addis 11,11,(1f-res_0)@ha
7174 * 1: addi 11,11,(1b-res_0)@l
7177 * sub 11,11,12 # r11 = index * 4
7178 * addis 12,12,(got+4-1b)@ha
7179 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7180 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7183 * add 11,0,11 # r11 = index * 12 = reloc offset.
7186 static const unsigned int pic_plt_resolve[] =
7206 static const unsigned int plt_resolve[] =
7226 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7228 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7231 /* Build the branch table, one for each plt entry (less one),
7232 and perhaps some padding. */
7233 p = htab->glink->contents;
7234 p += htab->glink_pltresolve;
7235 endp = htab->glink->contents;
7236 endp += htab->glink->size - GLINK_PLTRESOLVE;
7237 while (p < endp - 8 * 4)
7239 bfd_put_32 (output_bfd, B + endp - p, p);
7244 bfd_put_32 (output_bfd, NOP, p);
7248 res0 = (htab->glink_pltresolve
7249 + htab->glink->output_section->vma
7250 + htab->glink->output_offset);
7252 /* Last comes the PLTresolve stub. */
7253 if (info->shared || info->pie)
7257 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7259 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7262 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7264 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7265 + htab->glink->output_section->vma
7266 + htab->glink->output_offset);
7268 bfd_put_32 (output_bfd,
7269 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7270 bfd_put_32 (output_bfd,
7271 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7272 bfd_put_32 (output_bfd,
7273 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7274 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7276 bfd_put_32 (output_bfd,
7277 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7278 bfd_put_32 (output_bfd,
7279 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7283 bfd_put_32 (output_bfd,
7284 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7285 bfd_put_32 (output_bfd,
7286 LWZ_12_12 + 4, p + 9*4);
7291 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7293 bfd_put_32 (output_bfd, plt_resolve[i], p);
7296 p -= 4 * ARRAY_SIZE (plt_resolve);
7298 bfd_put_32 (output_bfd,
7299 LIS_12 + PPC_HA (got + 4), p + 0*4);
7300 bfd_put_32 (output_bfd,
7301 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7302 bfd_put_32 (output_bfd,
7303 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7304 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7306 bfd_put_32 (output_bfd,
7307 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7308 bfd_put_32 (output_bfd,
7309 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7313 bfd_put_32 (output_bfd,
7314 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7315 bfd_put_32 (output_bfd,
7316 LWZ_12_12 + 4, p + 6*4);
7324 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7325 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7326 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7327 #define TARGET_BIG_NAME "elf32-powerpc"
7328 #define ELF_ARCH bfd_arch_powerpc
7329 #define ELF_MACHINE_CODE EM_PPC
7330 #ifdef __QNXTARGET__
7331 #define ELF_MAXPAGESIZE 0x1000
7333 #define ELF_MAXPAGESIZE 0x10000
7335 #define ELF_MINPAGESIZE 0x1000
7336 #define elf_info_to_howto ppc_elf_info_to_howto
7338 #ifdef EM_CYGNUS_POWERPC
7339 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7343 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7346 #define elf_backend_plt_not_loaded 1
7347 #define elf_backend_can_gc_sections 1
7348 #define elf_backend_can_refcount 1
7349 #define elf_backend_rela_normal 1
7351 #define bfd_elf32_mkobject ppc_elf_mkobject
7352 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7353 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7354 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7355 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7356 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7358 #define elf_backend_object_p ppc_elf_object_p
7359 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7360 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7361 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7362 #define elf_backend_relocate_section ppc_elf_relocate_section
7363 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7364 #define elf_backend_check_relocs ppc_elf_check_relocs
7365 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7366 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7367 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7368 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7369 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7370 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7371 #define elf_backend_fake_sections ppc_elf_fake_sections
7372 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7373 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7374 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7375 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7376 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7377 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7378 #define elf_backend_write_section ppc_elf_write_section
7379 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7380 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7381 #define elf_backend_action_discarded ppc_elf_action_discarded
7383 #include "elf32-target.h"
7385 /* VxWorks Target */
7387 #undef TARGET_LITTLE_SYM
7388 #undef TARGET_LITTLE_NAME
7390 #undef TARGET_BIG_SYM
7391 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7392 #undef TARGET_BIG_NAME
7393 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7395 /* VxWorks uses the elf default section flags for .plt. */
7396 static const struct bfd_elf_special_section *
7397 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7399 if (sec->name == NULL)
7402 if (strcmp (sec->name, ".plt") == 0)
7403 return _bfd_elf_get_sec_type_attr (abfd, sec);
7405 return ppc_elf_get_sec_type_attr (abfd, sec);
7408 /* Like ppc_elf_link_hash_table_create, but overrides
7409 appropriately for VxWorks. */
7410 static struct bfd_link_hash_table *
7411 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7413 struct bfd_link_hash_table *ret;
7415 ret = ppc_elf_link_hash_table_create (abfd);
7418 struct ppc_elf_link_hash_table *htab
7419 = (struct ppc_elf_link_hash_table *)ret;
7420 htab->is_vxworks = 1;
7421 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7422 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7423 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7428 /* Tweak magic VxWorks symbols as they are loaded. */
7430 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7431 struct bfd_link_info *info,
7432 Elf_Internal_Sym *sym,
7433 const char **namep ATTRIBUTE_UNUSED,
7434 flagword *flagsp ATTRIBUTE_UNUSED,
7438 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7442 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7445 /* Tweak magic VxWorks symbols as they are written to the output file. */
7447 elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info
7450 Elf_Internal_Sym *sym,
7451 asection *input_sec ATTRIBUTE_UNUSED,
7452 struct elf_link_hash_entry *h
7455 /* Ignore the first dummy symbol. */
7459 return elf_vxworks_link_output_symbol_hook (name, sym);
7463 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7465 ppc_elf_final_write_processing(abfd, linker);
7466 elf_vxworks_final_write_processing(abfd, linker);
7469 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7471 #undef elf_backend_want_plt_sym
7472 #define elf_backend_want_plt_sym 1
7473 #undef elf_backend_want_got_plt
7474 #define elf_backend_want_got_plt 1
7475 #undef elf_backend_got_symbol_offset
7476 #define elf_backend_got_symbol_offset 0
7477 #undef elf_backend_plt_not_loaded
7478 #define elf_backend_plt_not_loaded 0
7479 #undef elf_backend_plt_readonly
7480 #define elf_backend_plt_readonly 1
7481 #undef elf_backend_got_header_size
7482 #define elf_backend_got_header_size 12
7484 #undef bfd_elf32_bfd_link_hash_table_create
7485 #define bfd_elf32_bfd_link_hash_table_create \
7486 ppc_elf_vxworks_link_hash_table_create
7487 #undef elf_backend_add_symbol_hook
7488 #define elf_backend_add_symbol_hook \
7489 ppc_elf_vxworks_add_symbol_hook
7490 #undef elf_backend_link_output_symbol_hook
7491 #define elf_backend_link_output_symbol_hook \
7492 elf_i386_vxworks_link_output_symbol_hook
7493 #undef elf_backend_final_write_processing
7494 #define elf_backend_final_write_processing \
7495 ppc_elf_vxworks_final_write_processing
7496 #undef elf_backend_get_sec_type_attr
7497 #define elf_backend_get_sec_type_attr \
7498 ppc_elf_vxworks_get_sec_type_attr
7499 #undef elf_backend_emit_relocs
7500 #define elf_backend_emit_relocs \
7501 elf_vxworks_emit_relocs
7504 #define elf32_bed ppc_elf_vxworks_bed
7506 #include "elf32-target.h"
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