1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007 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 3 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. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
65 /* VxWorks uses its own plt layout, filled in by the static linker. */
67 /* The standard VxWorks PLT entry. */
68 #define VXWORKS_PLT_ENTRY_SIZE 32
69 static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
94 /* The initial VxWorks PLT entry. */
95 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96 static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
108 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
121 /* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
124 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
125 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126 /* The number of relocations in the PLTResolve slot. */
127 #define VXWORKS_PLTRESOLVE_RELOCS 2
128 /* The number of relocations in the PLTResolve slot when when creating
130 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
132 /* Some instructions. */
133 #define ADDIS_11_11 0x3d6b0000
134 #define ADDIS_11_30 0x3d7e0000
135 #define ADDIS_12_12 0x3d8c0000
136 #define ADDI_11_11 0x396b0000
137 #define ADD_0_11_11 0x7c0b5a14
138 #define ADD_11_0_11 0x7d605a14
140 #define BCL_20_31 0x429f0005
141 #define BCTR 0x4e800420
142 #define LIS_11 0x3d600000
143 #define LIS_12 0x3d800000
144 #define LWZU_0_12 0x840c0000
145 #define LWZ_0_12 0x800c0000
146 #define LWZ_11_11 0x816b0000
147 #define LWZ_11_30 0x817e0000
148 #define LWZ_12_12 0x818c0000
149 #define MFLR_0 0x7c0802a6
150 #define MFLR_12 0x7d8802a6
151 #define MTCTR_0 0x7c0903a6
152 #define MTCTR_11 0x7d6903a6
153 #define MTLR_0 0x7c0803a6
154 #define NOP 0x60000000
155 #define SUB_11_11_12 0x7d6c5850
157 /* Offset of tp and dtp pointers from start of TLS block. */
158 #define TP_OFFSET 0x7000
159 #define DTP_OFFSET 0x8000
161 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
163 static reloc_howto_type ppc_elf_howto_raw[] = {
164 /* This reloc does nothing. */
165 HOWTO (R_PPC_NONE, /* type */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
169 FALSE, /* pc_relative */
171 complain_overflow_bitfield, /* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_PPC_NONE", /* name */
174 FALSE, /* partial_inplace */
177 FALSE), /* pcrel_offset */
179 /* A standard 32 bit relocation. */
180 HOWTO (R_PPC_ADDR32, /* type */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
184 FALSE, /* pc_relative */
186 complain_overflow_bitfield, /* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_PPC_ADDR32", /* name */
189 FALSE, /* partial_inplace */
191 0xffffffff, /* dst_mask */
192 FALSE), /* pcrel_offset */
194 /* An absolute 26 bit branch; the lower two bits must be zero.
195 FIXME: we don't check that, we just clear them. */
196 HOWTO (R_PPC_ADDR24, /* type */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
200 FALSE, /* pc_relative */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 bfd_elf_generic_reloc, /* special_function */
204 "R_PPC_ADDR24", /* name */
205 FALSE, /* partial_inplace */
207 0x3fffffc, /* dst_mask */
208 FALSE), /* pcrel_offset */
210 /* A standard 16 bit relocation. */
211 HOWTO (R_PPC_ADDR16, /* type */
213 1, /* size (0 = byte, 1 = short, 2 = long) */
215 FALSE, /* pc_relative */
217 complain_overflow_bitfield, /* complain_on_overflow */
218 bfd_elf_generic_reloc, /* special_function */
219 "R_PPC_ADDR16", /* name */
220 FALSE, /* partial_inplace */
222 0xffff, /* dst_mask */
223 FALSE), /* pcrel_offset */
225 /* A 16 bit relocation without overflow. */
226 HOWTO (R_PPC_ADDR16_LO, /* type */
228 1, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_dont,/* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR16_LO", /* name */
235 FALSE, /* partial_inplace */
237 0xffff, /* dst_mask */
238 FALSE), /* pcrel_offset */
240 /* The high order 16 bits of an address. */
241 HOWTO (R_PPC_ADDR16_HI, /* type */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE, /* pc_relative */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC_ADDR16_HI", /* name */
250 FALSE, /* partial_inplace */
252 0xffff, /* dst_mask */
253 FALSE), /* pcrel_offset */
255 /* The high order 16 bits of an address, plus 1 if the contents of
256 the low 16 bits, treated as a signed number, is negative. */
257 HOWTO (R_PPC_ADDR16_HA, /* type */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
261 FALSE, /* pc_relative */
263 complain_overflow_dont, /* complain_on_overflow */
264 ppc_elf_addr16_ha_reloc, /* special_function */
265 "R_PPC_ADDR16_HA", /* name */
266 FALSE, /* partial_inplace */
268 0xffff, /* dst_mask */
269 FALSE), /* pcrel_offset */
271 /* An absolute 16 bit branch; the lower two bits must be zero.
272 FIXME: we don't check that, we just clear them. */
273 HOWTO (R_PPC_ADDR14, /* type */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_bitfield, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC_ADDR14", /* name */
282 FALSE, /* partial_inplace */
284 0xfffc, /* dst_mask */
285 FALSE), /* pcrel_offset */
287 /* An absolute 16 bit branch, for which bit 10 should be set to
288 indicate that the branch is expected to be taken. The lower two
289 bits must be zero. */
290 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE, /* pc_relative */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC_ADDR14_BRTAKEN",/* name */
299 FALSE, /* partial_inplace */
301 0xfffc, /* dst_mask */
302 FALSE), /* pcrel_offset */
304 /* An absolute 16 bit branch, for which bit 10 should be set to
305 indicate that the branch is not expected to be taken. The lower
306 two bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE, /* pc_relative */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC_ADDR14_BRNTAKEN",/* name */
316 FALSE, /* partial_inplace */
318 0xfffc, /* dst_mask */
319 FALSE), /* pcrel_offset */
321 /* A relative 26 bit branch; the lower two bits must be zero. */
322 HOWTO (R_PPC_REL24, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 TRUE, /* pc_relative */
328 complain_overflow_signed, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_PPC_REL24", /* name */
331 FALSE, /* partial_inplace */
333 0x3fffffc, /* dst_mask */
334 TRUE), /* pcrel_offset */
336 /* A relative 16 bit branch; the lower two bits must be zero. */
337 HOWTO (R_PPC_REL14, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 TRUE, /* pc_relative */
343 complain_overflow_signed, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC_REL14", /* name */
346 FALSE, /* partial_inplace */
348 0xfffc, /* dst_mask */
349 TRUE), /* pcrel_offset */
351 /* A relative 16 bit branch. Bit 10 should be set to indicate that
352 the branch is expected to be taken. The lower two bits must be
354 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 TRUE, /* pc_relative */
360 complain_overflow_signed, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_PPC_REL14_BRTAKEN", /* name */
363 FALSE, /* partial_inplace */
365 0xfffc, /* dst_mask */
366 TRUE), /* pcrel_offset */
368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
369 the branch is not expected to be taken. The lower two bits must
371 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 TRUE, /* pc_relative */
377 complain_overflow_signed, /* complain_on_overflow */
378 bfd_elf_generic_reloc, /* special_function */
379 "R_PPC_REL14_BRNTAKEN",/* name */
380 FALSE, /* partial_inplace */
382 0xfffc, /* dst_mask */
383 TRUE), /* pcrel_offset */
385 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
387 HOWTO (R_PPC_GOT16, /* type */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
391 FALSE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_GOT16", /* name */
396 FALSE, /* partial_inplace */
398 0xffff, /* dst_mask */
399 FALSE), /* pcrel_offset */
401 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
403 HOWTO (R_PPC_GOT16_LO, /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE, /* pc_relative */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_PPC_GOT16_LO", /* name */
412 FALSE, /* partial_inplace */
414 0xffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
417 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
419 HOWTO (R_PPC_GOT16_HI, /* type */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_bitfield, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_PPC_GOT16_HI", /* name */
428 FALSE, /* partial_inplace */
430 0xffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
435 HOWTO (R_PPC_GOT16_HA, /* type */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
439 FALSE, /* pc_relative */
441 complain_overflow_bitfield, /* complain_on_overflow */
442 ppc_elf_addr16_ha_reloc, /* special_function */
443 "R_PPC_GOT16_HA", /* name */
444 FALSE, /* partial_inplace */
446 0xffff, /* dst_mask */
447 FALSE), /* pcrel_offset */
449 /* Like R_PPC_REL24, but referring to the procedure linkage table
450 entry for the symbol. */
451 HOWTO (R_PPC_PLTREL24, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 TRUE, /* pc_relative */
457 complain_overflow_signed, /* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_PPC_PLTREL24", /* name */
460 FALSE, /* partial_inplace */
462 0x3fffffc, /* dst_mask */
463 TRUE), /* pcrel_offset */
465 /* This is used only by the dynamic linker. The symbol should exist
466 both in the object being run and in some shared library. The
467 dynamic linker copies the data addressed by the symbol from the
468 shared library into the object, because the object being
469 run has to have the data at some particular address. */
470 HOWTO (R_PPC_COPY, /* type */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
474 FALSE, /* pc_relative */
476 complain_overflow_bitfield, /* complain_on_overflow */
477 bfd_elf_generic_reloc, /* special_function */
478 "R_PPC_COPY", /* name */
479 FALSE, /* partial_inplace */
482 FALSE), /* pcrel_offset */
484 /* Like R_PPC_ADDR32, but used when setting global offset table
486 HOWTO (R_PPC_GLOB_DAT, /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE, /* pc_relative */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_GLOB_DAT", /* name */
495 FALSE, /* partial_inplace */
497 0xffffffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
500 /* Marks a procedure linkage table entry for a symbol. */
501 HOWTO (R_PPC_JMP_SLOT, /* type */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE, /* pc_relative */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC_JMP_SLOT", /* name */
510 FALSE, /* partial_inplace */
513 FALSE), /* pcrel_offset */
515 /* Used only by the dynamic linker. When the object is run, this
516 longword is set to the load address of the object, plus the
518 HOWTO (R_PPC_RELATIVE, /* type */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
522 FALSE, /* pc_relative */
524 complain_overflow_bitfield, /* complain_on_overflow */
525 bfd_elf_generic_reloc, /* special_function */
526 "R_PPC_RELATIVE", /* name */
527 FALSE, /* partial_inplace */
529 0xffffffff, /* dst_mask */
530 FALSE), /* pcrel_offset */
532 /* Like R_PPC_REL24, but uses the value of the symbol within the
533 object rather than the final value. Normally used for
534 _GLOBAL_OFFSET_TABLE_. */
535 HOWTO (R_PPC_LOCAL24PC, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 TRUE, /* pc_relative */
541 complain_overflow_signed, /* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_PPC_LOCAL24PC", /* name */
544 FALSE, /* partial_inplace */
546 0x3fffffc, /* dst_mask */
547 TRUE), /* pcrel_offset */
549 /* Like R_PPC_ADDR32, but may be unaligned. */
550 HOWTO (R_PPC_UADDR32, /* type */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
554 FALSE, /* pc_relative */
556 complain_overflow_bitfield, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_PPC_UADDR32", /* name */
559 FALSE, /* partial_inplace */
561 0xffffffff, /* dst_mask */
562 FALSE), /* pcrel_offset */
564 /* Like R_PPC_ADDR16, but may be unaligned. */
565 HOWTO (R_PPC_UADDR16, /* type */
567 1, /* size (0 = byte, 1 = short, 2 = long) */
569 FALSE, /* pc_relative */
571 complain_overflow_bitfield, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC_UADDR16", /* name */
574 FALSE, /* partial_inplace */
576 0xffff, /* dst_mask */
577 FALSE), /* pcrel_offset */
579 /* 32-bit PC relative */
580 HOWTO (R_PPC_REL32, /* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 TRUE, /* pc_relative */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_REL32", /* name */
589 FALSE, /* partial_inplace */
591 0xffffffff, /* dst_mask */
592 TRUE), /* pcrel_offset */
594 /* 32-bit relocation to the symbol's procedure linkage table.
595 FIXME: not supported. */
596 HOWTO (R_PPC_PLT32, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC_PLT32", /* name */
605 FALSE, /* partial_inplace */
608 FALSE), /* pcrel_offset */
610 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
611 FIXME: not supported. */
612 HOWTO (R_PPC_PLTREL32, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 TRUE, /* pc_relative */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_PLTREL32", /* name */
621 FALSE, /* partial_inplace */
624 TRUE), /* pcrel_offset */
626 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
628 HOWTO (R_PPC_PLT16_LO, /* type */
630 1, /* size (0 = byte, 1 = short, 2 = long) */
632 FALSE, /* pc_relative */
634 complain_overflow_dont, /* complain_on_overflow */
635 bfd_elf_generic_reloc, /* special_function */
636 "R_PPC_PLT16_LO", /* name */
637 FALSE, /* partial_inplace */
639 0xffff, /* dst_mask */
640 FALSE), /* pcrel_offset */
642 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
644 HOWTO (R_PPC_PLT16_HI, /* type */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE, /* pc_relative */
650 complain_overflow_bitfield, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC_PLT16_HI", /* name */
653 FALSE, /* partial_inplace */
655 0xffff, /* dst_mask */
656 FALSE), /* pcrel_offset */
658 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
660 HOWTO (R_PPC_PLT16_HA, /* type */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE, /* pc_relative */
666 complain_overflow_bitfield, /* complain_on_overflow */
667 ppc_elf_addr16_ha_reloc, /* special_function */
668 "R_PPC_PLT16_HA", /* name */
669 FALSE, /* partial_inplace */
671 0xffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
674 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
676 HOWTO (R_PPC_SDAREL16, /* type */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE, /* pc_relative */
682 complain_overflow_signed, /* complain_on_overflow */
683 bfd_elf_generic_reloc, /* special_function */
684 "R_PPC_SDAREL16", /* name */
685 FALSE, /* partial_inplace */
687 0xffff, /* dst_mask */
688 FALSE), /* pcrel_offset */
690 /* 16-bit section relative relocation. */
691 HOWTO (R_PPC_SECTOFF, /* type */
693 1, /* size (0 = byte, 1 = short, 2 = long) */
695 FALSE, /* pc_relative */
697 complain_overflow_bitfield, /* complain_on_overflow */
698 bfd_elf_generic_reloc, /* special_function */
699 "R_PPC_SECTOFF", /* name */
700 FALSE, /* partial_inplace */
702 0xffff, /* dst_mask */
703 FALSE), /* pcrel_offset */
705 /* 16-bit lower half section relative relocation. */
706 HOWTO (R_PPC_SECTOFF_LO, /* type */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
710 FALSE, /* pc_relative */
712 complain_overflow_dont, /* complain_on_overflow */
713 bfd_elf_generic_reloc, /* special_function */
714 "R_PPC_SECTOFF_LO", /* name */
715 FALSE, /* partial_inplace */
717 0xffff, /* dst_mask */
718 FALSE), /* pcrel_offset */
720 /* 16-bit upper half section relative relocation. */
721 HOWTO (R_PPC_SECTOFF_HI, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE, /* pc_relative */
727 complain_overflow_bitfield, /* complain_on_overflow */
728 bfd_elf_generic_reloc, /* special_function */
729 "R_PPC_SECTOFF_HI", /* name */
730 FALSE, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
735 /* 16-bit upper half adjusted section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_HA, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_bitfield, /* complain_on_overflow */
743 ppc_elf_addr16_ha_reloc, /* special_function */
744 "R_PPC_SECTOFF_HA", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* Marker reloc for TLS. */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_dont, /* complain_on_overflow */
758 bfd_elf_generic_reloc, /* special_function */
759 "R_PPC_TLS", /* name */
760 FALSE, /* partial_inplace */
763 FALSE), /* pcrel_offset */
765 /* Computes the load module index of the load module that contains the
766 definition of its TLS sym. */
767 HOWTO (R_PPC_DTPMOD32,
769 2, /* size (0 = byte, 1 = short, 2 = long) */
771 FALSE, /* pc_relative */
773 complain_overflow_dont, /* complain_on_overflow */
774 ppc_elf_unhandled_reloc, /* special_function */
775 "R_PPC_DTPMOD32", /* name */
776 FALSE, /* partial_inplace */
778 0xffffffff, /* dst_mask */
779 FALSE), /* pcrel_offset */
781 /* Computes a dtv-relative displacement, the difference between the value
782 of sym+add and the base address of the thread-local storage block that
783 contains the definition of sym, minus 0x8000. */
784 HOWTO (R_PPC_DTPREL32,
786 2, /* size (0 = byte, 1 = short, 2 = long) */
788 FALSE, /* pc_relative */
790 complain_overflow_dont, /* complain_on_overflow */
791 ppc_elf_unhandled_reloc, /* special_function */
792 "R_PPC_DTPREL32", /* name */
793 FALSE, /* partial_inplace */
795 0xffffffff, /* dst_mask */
796 FALSE), /* pcrel_offset */
798 /* A 16 bit dtprel reloc. */
799 HOWTO (R_PPC_DTPREL16,
801 1, /* size (0 = byte, 1 = short, 2 = long) */
803 FALSE, /* pc_relative */
805 complain_overflow_signed, /* complain_on_overflow */
806 ppc_elf_unhandled_reloc, /* special_function */
807 "R_PPC_DTPREL16", /* name */
808 FALSE, /* partial_inplace */
810 0xffff, /* dst_mask */
811 FALSE), /* pcrel_offset */
813 /* Like DTPREL16, but no overflow. */
814 HOWTO (R_PPC_DTPREL16_LO,
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 FALSE, /* pc_relative */
820 complain_overflow_dont, /* complain_on_overflow */
821 ppc_elf_unhandled_reloc, /* special_function */
822 "R_PPC_DTPREL16_LO", /* name */
823 FALSE, /* partial_inplace */
825 0xffff, /* dst_mask */
826 FALSE), /* pcrel_offset */
828 /* Like DTPREL16_LO, but next higher group of 16 bits. */
829 HOWTO (R_PPC_DTPREL16_HI,
831 1, /* size (0 = byte, 1 = short, 2 = long) */
833 FALSE, /* pc_relative */
835 complain_overflow_dont, /* complain_on_overflow */
836 ppc_elf_unhandled_reloc, /* special_function */
837 "R_PPC_DTPREL16_HI", /* name */
838 FALSE, /* partial_inplace */
840 0xffff, /* dst_mask */
841 FALSE), /* pcrel_offset */
843 /* Like DTPREL16_HI, but adjust for low 16 bits. */
844 HOWTO (R_PPC_DTPREL16_HA,
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE, /* pc_relative */
850 complain_overflow_dont, /* complain_on_overflow */
851 ppc_elf_unhandled_reloc, /* special_function */
852 "R_PPC_DTPREL16_HA", /* name */
853 FALSE, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
858 /* Computes a tp-relative displacement, the difference between the value of
859 sym+add and the value of the thread pointer (r13). */
860 HOWTO (R_PPC_TPREL32,
862 2, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE, /* pc_relative */
866 complain_overflow_dont, /* complain_on_overflow */
867 ppc_elf_unhandled_reloc, /* special_function */
868 "R_PPC_TPREL32", /* name */
869 FALSE, /* partial_inplace */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
874 /* A 16 bit tprel reloc. */
875 HOWTO (R_PPC_TPREL16,
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE, /* pc_relative */
881 complain_overflow_signed, /* complain_on_overflow */
882 ppc_elf_unhandled_reloc, /* special_function */
883 "R_PPC_TPREL16", /* name */
884 FALSE, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
889 /* Like TPREL16, but no overflow. */
890 HOWTO (R_PPC_TPREL16_LO,
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 ppc_elf_unhandled_reloc, /* special_function */
898 "R_PPC_TPREL16_LO", /* name */
899 FALSE, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* Like TPREL16_LO, but next higher group of 16 bits. */
905 HOWTO (R_PPC_TPREL16_HI,
907 1, /* size (0 = byte, 1 = short, 2 = long) */
909 FALSE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 ppc_elf_unhandled_reloc, /* special_function */
913 "R_PPC_TPREL16_HI", /* name */
914 FALSE, /* partial_inplace */
916 0xffff, /* dst_mask */
917 FALSE), /* pcrel_offset */
919 /* Like TPREL16_HI, but adjust for low 16 bits. */
920 HOWTO (R_PPC_TPREL16_HA,
922 1, /* size (0 = byte, 1 = short, 2 = long) */
924 FALSE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc_elf_unhandled_reloc, /* special_function */
928 "R_PPC_TPREL16_HA", /* name */
929 FALSE, /* partial_inplace */
931 0xffff, /* dst_mask */
932 FALSE), /* pcrel_offset */
934 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
935 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
936 to the first entry. */
937 HOWTO (R_PPC_GOT_TLSGD16,
939 1, /* size (0 = byte, 1 = short, 2 = long) */
941 FALSE, /* pc_relative */
943 complain_overflow_signed, /* complain_on_overflow */
944 ppc_elf_unhandled_reloc, /* special_function */
945 "R_PPC_GOT_TLSGD16", /* name */
946 FALSE, /* partial_inplace */
948 0xffff, /* dst_mask */
949 FALSE), /* pcrel_offset */
951 /* Like GOT_TLSGD16, but no overflow. */
952 HOWTO (R_PPC_GOT_TLSGD16_LO,
954 1, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE, /* pc_relative */
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc_elf_unhandled_reloc, /* special_function */
960 "R_PPC_GOT_TLSGD16_LO", /* name */
961 FALSE, /* partial_inplace */
963 0xffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
966 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
967 HOWTO (R_PPC_GOT_TLSGD16_HI,
969 1, /* size (0 = byte, 1 = short, 2 = long) */
971 FALSE, /* pc_relative */
973 complain_overflow_dont, /* complain_on_overflow */
974 ppc_elf_unhandled_reloc, /* special_function */
975 "R_PPC_GOT_TLSGD16_HI", /* name */
976 FALSE, /* partial_inplace */
978 0xffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
981 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
982 HOWTO (R_PPC_GOT_TLSGD16_HA,
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE, /* pc_relative */
988 complain_overflow_dont, /* complain_on_overflow */
989 ppc_elf_unhandled_reloc, /* special_function */
990 "R_PPC_GOT_TLSGD16_HA", /* name */
991 FALSE, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE), /* pcrel_offset */
996 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
997 with values (sym+add)@dtpmod and zero, and computes the offset to the
999 HOWTO (R_PPC_GOT_TLSLD16,
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1003 FALSE, /* pc_relative */
1005 complain_overflow_signed, /* complain_on_overflow */
1006 ppc_elf_unhandled_reloc, /* special_function */
1007 "R_PPC_GOT_TLSLD16", /* name */
1008 FALSE, /* partial_inplace */
1010 0xffff, /* dst_mask */
1011 FALSE), /* pcrel_offset */
1013 /* Like GOT_TLSLD16, but no overflow. */
1014 HOWTO (R_PPC_GOT_TLSLD16_LO,
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1018 FALSE, /* pc_relative */
1020 complain_overflow_dont, /* complain_on_overflow */
1021 ppc_elf_unhandled_reloc, /* special_function */
1022 "R_PPC_GOT_TLSLD16_LO", /* name */
1023 FALSE, /* partial_inplace */
1025 0xffff, /* dst_mask */
1026 FALSE), /* pcrel_offset */
1028 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1029 HOWTO (R_PPC_GOT_TLSLD16_HI,
1030 16, /* rightshift */
1031 1, /* size (0 = byte, 1 = short, 2 = long) */
1033 FALSE, /* pc_relative */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 ppc_elf_unhandled_reloc, /* special_function */
1037 "R_PPC_GOT_TLSLD16_HI", /* name */
1038 FALSE, /* partial_inplace */
1040 0xffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1043 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1044 HOWTO (R_PPC_GOT_TLSLD16_HA,
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE, /* pc_relative */
1050 complain_overflow_dont, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc, /* special_function */
1052 "R_PPC_GOT_TLSLD16_HA", /* name */
1053 FALSE, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1058 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1059 the offset to the entry. */
1060 HOWTO (R_PPC_GOT_DTPREL16,
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE, /* pc_relative */
1066 complain_overflow_signed, /* complain_on_overflow */
1067 ppc_elf_unhandled_reloc, /* special_function */
1068 "R_PPC_GOT_DTPREL16", /* name */
1069 FALSE, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1074 /* Like GOT_DTPREL16, but no overflow. */
1075 HOWTO (R_PPC_GOT_DTPREL16_LO,
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE, /* pc_relative */
1081 complain_overflow_dont, /* complain_on_overflow */
1082 ppc_elf_unhandled_reloc, /* special_function */
1083 "R_PPC_GOT_DTPREL16_LO", /* name */
1084 FALSE, /* partial_inplace */
1086 0xffff, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1089 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1090 HOWTO (R_PPC_GOT_DTPREL16_HI,
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc_elf_unhandled_reloc, /* special_function */
1098 "R_PPC_GOT_DTPREL16_HI", /* name */
1099 FALSE, /* partial_inplace */
1101 0xffff, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1105 HOWTO (R_PPC_GOT_DTPREL16_HA,
1106 16, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE, /* pc_relative */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc_elf_unhandled_reloc, /* special_function */
1113 "R_PPC_GOT_DTPREL16_HA", /* name */
1114 FALSE, /* partial_inplace */
1116 0xffff, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1119 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1120 offset to the entry. */
1121 HOWTO (R_PPC_GOT_TPREL16,
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE, /* pc_relative */
1127 complain_overflow_signed, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc, /* special_function */
1129 "R_PPC_GOT_TPREL16", /* name */
1130 FALSE, /* partial_inplace */
1132 0xffff, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1135 /* Like GOT_TPREL16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TPREL16_LO,
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE, /* pc_relative */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc, /* special_function */
1144 "R_PPC_GOT_TPREL16_LO", /* name */
1145 FALSE, /* partial_inplace */
1147 0xffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1150 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TPREL16_HI,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE, /* pc_relative */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc, /* special_function */
1159 "R_PPC_GOT_TPREL16_HI", /* name */
1160 FALSE, /* partial_inplace */
1162 0xffff, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1165 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TPREL16_HA,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE, /* pc_relative */
1172 complain_overflow_dont, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc, /* special_function */
1174 "R_PPC_GOT_TPREL16_HA", /* name */
1175 FALSE, /* partial_inplace */
1177 0xffff, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1180 /* The remaining relocs are from the Embedded ELF ABI, and are not
1181 in the SVR4 ELF ABI. */
1183 /* 32 bit value resulting from the addend minus the symbol. */
1184 HOWTO (R_PPC_EMB_NADDR32, /* type */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 FALSE, /* pc_relative */
1190 complain_overflow_bitfield, /* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_PPC_EMB_NADDR32", /* name */
1193 FALSE, /* partial_inplace */
1195 0xffffffff, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1198 /* 16 bit value resulting from the addend minus the symbol. */
1199 HOWTO (R_PPC_EMB_NADDR16, /* type */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE, /* pc_relative */
1205 complain_overflow_bitfield, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_PPC_EMB_NADDR16", /* name */
1208 FALSE, /* partial_inplace */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1213 /* 16 bit value resulting from the addend minus the symbol. */
1214 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1216 1, /* size (0 = byte, 1 = short, 2 = long) */
1218 FALSE, /* pc_relative */
1220 complain_overflow_dont,/* complain_on_overflow */
1221 bfd_elf_generic_reloc, /* special_function */
1222 "R_PPC_EMB_ADDR16_LO", /* name */
1223 FALSE, /* partial_inplace */
1225 0xffff, /* dst_mask */
1226 FALSE), /* pcrel_offset */
1228 /* The high order 16 bits of the addend minus the symbol. */
1229 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1230 16, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1233 FALSE, /* pc_relative */
1235 complain_overflow_dont, /* complain_on_overflow */
1236 bfd_elf_generic_reloc, /* special_function */
1237 "R_PPC_EMB_NADDR16_HI", /* name */
1238 FALSE, /* partial_inplace */
1240 0xffff, /* dst_mask */
1241 FALSE), /* pcrel_offset */
1243 /* The high order 16 bits of the result of the addend minus the address,
1244 plus 1 if the contents of the low 16 bits, treated as a signed number,
1246 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1247 16, /* rightshift */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1250 FALSE, /* pc_relative */
1252 complain_overflow_dont, /* complain_on_overflow */
1253 ppc_elf_addr16_ha_reloc, /* special_function */
1254 "R_PPC_EMB_NADDR16_HA", /* name */
1255 FALSE, /* partial_inplace */
1257 0xffff, /* dst_mask */
1258 FALSE), /* pcrel_offset */
1260 /* 16 bit value resulting from allocating a 4 byte word to hold an
1261 address in the .sdata section, and returning the offset from
1262 _SDA_BASE_ for that relocation. */
1263 HOWTO (R_PPC_EMB_SDAI16, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_bitfield, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_SDAI16", /* name */
1272 FALSE, /* partial_inplace */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* 16 bit value resulting from allocating a 4 byte word to hold an
1278 address in the .sdata2 section, and returning the offset from
1279 _SDA2_BASE_ for that relocation. */
1280 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_bitfield, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_SDA2I16", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1295 small data items. */
1296 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE, /* pc_relative */
1302 complain_overflow_signed, /* complain_on_overflow */
1303 bfd_elf_generic_reloc, /* special_function */
1304 "R_PPC_EMB_SDA2REL", /* name */
1305 FALSE, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1310 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1311 signed offset from the appropriate base, and filling in the register
1312 field with the appropriate register (0, 2, or 13). */
1313 HOWTO (R_PPC_EMB_SDA21, /* type */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC_EMB_SDA21", /* name */
1322 FALSE, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1327 /* Relocation not handled: R_PPC_EMB_MRKREF */
1328 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1329 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1331 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1332 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1334 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1335 in the 16 bit signed offset from the appropriate base, and filling in the
1336 register field with the appropriate register (0, 2, or 13). */
1337 HOWTO (R_PPC_EMB_RELSDA, /* type */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 TRUE, /* pc_relative */
1343 complain_overflow_signed, /* complain_on_overflow */
1344 bfd_elf_generic_reloc, /* special_function */
1345 "R_PPC_EMB_RELSDA", /* name */
1346 FALSE, /* partial_inplace */
1348 0xffff, /* dst_mask */
1349 FALSE), /* pcrel_offset */
1351 /* A 16 bit relative relocation. */
1352 HOWTO (R_PPC_REL16, /* type */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 TRUE, /* pc_relative */
1358 complain_overflow_bitfield, /* complain_on_overflow */
1359 bfd_elf_generic_reloc, /* special_function */
1360 "R_PPC_REL16", /* name */
1361 FALSE, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 TRUE), /* pcrel_offset */
1366 /* A 16 bit relative relocation without overflow. */
1367 HOWTO (R_PPC_REL16_LO, /* type */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1371 TRUE, /* pc_relative */
1373 complain_overflow_dont,/* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_REL16_LO", /* name */
1376 FALSE, /* partial_inplace */
1378 0xffff, /* dst_mask */
1379 TRUE), /* pcrel_offset */
1381 /* The high order 16 bits of a relative address. */
1382 HOWTO (R_PPC_REL16_HI, /* type */
1383 16, /* rightshift */
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1386 TRUE, /* pc_relative */
1388 complain_overflow_dont, /* complain_on_overflow */
1389 bfd_elf_generic_reloc, /* special_function */
1390 "R_PPC_REL16_HI", /* name */
1391 FALSE, /* partial_inplace */
1393 0xffff, /* dst_mask */
1394 TRUE), /* pcrel_offset */
1396 /* The high order 16 bits of a relative address, plus 1 if the contents of
1397 the low 16 bits, treated as a signed number, is negative. */
1398 HOWTO (R_PPC_REL16_HA, /* type */
1399 16, /* rightshift */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 TRUE, /* pc_relative */
1404 complain_overflow_dont, /* complain_on_overflow */
1405 ppc_elf_addr16_ha_reloc, /* special_function */
1406 "R_PPC_REL16_HA", /* name */
1407 FALSE, /* partial_inplace */
1409 0xffff, /* dst_mask */
1410 TRUE), /* pcrel_offset */
1412 /* GNU extension to record C++ vtable hierarchy. */
1413 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1415 0, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE, /* pc_relative */
1419 complain_overflow_dont, /* complain_on_overflow */
1420 NULL, /* special_function */
1421 "R_PPC_GNU_VTINHERIT", /* name */
1422 FALSE, /* partial_inplace */
1425 FALSE), /* pcrel_offset */
1427 /* GNU extension to record C++ vtable member usage. */
1428 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1430 0, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE, /* pc_relative */
1434 complain_overflow_dont, /* complain_on_overflow */
1435 NULL, /* special_function */
1436 "R_PPC_GNU_VTENTRY", /* name */
1437 FALSE, /* partial_inplace */
1440 FALSE), /* pcrel_offset */
1442 /* Phony reloc to handle AIX style TOC entries. */
1443 HOWTO (R_PPC_TOC16, /* type */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE, /* pc_relative */
1449 complain_overflow_signed, /* complain_on_overflow */
1450 bfd_elf_generic_reloc, /* special_function */
1451 "R_PPC_TOC16", /* name */
1452 FALSE, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1458 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1461 ppc_elf_howto_init (void)
1463 unsigned int i, type;
1466 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1469 type = ppc_elf_howto_raw[i].type;
1470 if (type >= (sizeof (ppc_elf_howto_table)
1471 / sizeof (ppc_elf_howto_table[0])))
1473 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1477 static reloc_howto_type *
1478 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1479 bfd_reloc_code_real_type code)
1481 enum elf_ppc_reloc_type r;
1483 /* Initialize howto table if not already done. */
1484 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1485 ppc_elf_howto_init ();
1492 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1493 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1494 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1495 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1496 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1497 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1498 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1499 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1500 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1501 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1502 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1503 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1504 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1505 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1506 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1507 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1508 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1509 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1510 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1511 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1512 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1513 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1514 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1515 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1516 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1517 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1518 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1519 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1520 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1521 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1522 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1523 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1524 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1525 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1526 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1527 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1528 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1529 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1530 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1531 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1532 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1533 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1534 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1535 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1536 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1537 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1538 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1542 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1546 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1550 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1554 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1555 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1559 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1560 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1561 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1562 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1563 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1564 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1565 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1566 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1568 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1569 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1570 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1571 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1572 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1573 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1574 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1575 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1576 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1579 return ppc_elf_howto_table[r];
1582 static reloc_howto_type *
1583 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1589 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1591 if (ppc_elf_howto_raw[i].name != NULL
1592 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1593 return &ppc_elf_howto_raw[i];
1598 /* Set the howto pointer for a PowerPC ELF reloc. */
1601 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1603 Elf_Internal_Rela *dst)
1605 /* Initialize howto table if not already done. */
1606 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1607 ppc_elf_howto_init ();
1609 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1610 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1612 /* Just because the above assert didn't trigger doesn't mean that
1613 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1614 if (!cache_ptr->howto)
1616 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1617 abfd, ELF32_R_TYPE (dst->r_info));
1618 bfd_set_error (bfd_error_bad_value);
1620 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1624 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1626 static bfd_reloc_status_type
1627 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1628 arelent *reloc_entry,
1630 void *data ATTRIBUTE_UNUSED,
1631 asection *input_section,
1633 char **error_message ATTRIBUTE_UNUSED)
1637 if (output_bfd != NULL)
1639 reloc_entry->address += input_section->output_offset;
1640 return bfd_reloc_ok;
1643 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1644 return bfd_reloc_outofrange;
1646 if (bfd_is_com_section (symbol->section))
1649 relocation = symbol->value;
1651 relocation += symbol->section->output_section->vma;
1652 relocation += symbol->section->output_offset;
1653 relocation += reloc_entry->addend;
1654 if (reloc_entry->howto->pc_relative)
1655 relocation -= reloc_entry->address;
1657 reloc_entry->addend += (relocation & 0x8000) << 1;
1659 return bfd_reloc_continue;
1662 static bfd_reloc_status_type
1663 ppc_elf_unhandled_reloc (bfd *abfd,
1664 arelent *reloc_entry,
1667 asection *input_section,
1669 char **error_message)
1671 /* If this is a relocatable link (output_bfd test tells us), just
1672 call the generic function. Any adjustment will be done at final
1674 if (output_bfd != NULL)
1675 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1676 input_section, output_bfd, error_message);
1678 if (error_message != NULL)
1680 static char buf[60];
1681 sprintf (buf, _("generic linker can't handle %s"),
1682 reloc_entry->howto->name);
1683 *error_message = buf;
1685 return bfd_reloc_dangerous;
1688 /* Sections created by the linker. */
1690 typedef struct elf_linker_section
1692 /* Pointer to the bfd section. */
1696 /* Associated bss section name. */
1697 const char *bss_name;
1698 /* Associated symbol name. */
1699 const char *sym_name;
1700 /* Associated symbol. */
1701 struct elf_link_hash_entry *sym;
1702 } elf_linker_section_t;
1704 /* Linked list of allocated pointer entries. This hangs off of the
1705 symbol lists, and provides allows us to return different pointers,
1706 based on different addend's. */
1708 typedef struct elf_linker_section_pointers
1710 /* next allocated pointer for this symbol */
1711 struct elf_linker_section_pointers *next;
1712 /* offset of pointer from beginning of section */
1716 /* which linker section this is */
1717 elf_linker_section_t *lsect;
1718 } elf_linker_section_pointers_t;
1720 struct ppc_elf_obj_tdata
1722 struct elf_obj_tdata elf;
1724 /* A mapping from local symbols to offsets into the various linker
1725 sections added. This is index by the symbol index. */
1726 elf_linker_section_pointers_t **linker_section_pointers;
1728 /* Flags used to auto-detect plt type. */
1729 unsigned int makes_plt_call : 1;
1730 unsigned int has_rel16 : 1;
1733 #define ppc_elf_tdata(bfd) \
1734 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1736 #define elf_local_ptr_offsets(bfd) \
1737 (ppc_elf_tdata (bfd)->linker_section_pointers)
1739 /* Override the generic function because we store some extras. */
1742 ppc_elf_mkobject (bfd *abfd)
1744 if (abfd->tdata.any == NULL)
1746 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1747 abfd->tdata.any = bfd_zalloc (abfd, amt);
1748 if (abfd->tdata.any == NULL)
1751 return bfd_elf_mkobject (abfd);
1754 /* Fix bad default arch selected for a 32 bit input bfd when the
1755 default is 64 bit. */
1758 ppc_elf_object_p (bfd *abfd)
1760 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1762 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1764 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1766 /* Relies on arch after 64 bit default being 32 bit default. */
1767 abfd->arch_info = abfd->arch_info->next;
1768 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1774 /* Function to set whether a module needs the -mrelocatable bit set. */
1777 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1779 BFD_ASSERT (!elf_flags_init (abfd)
1780 || elf_elfheader (abfd)->e_flags == flags);
1782 elf_elfheader (abfd)->e_flags = flags;
1783 elf_flags_init (abfd) = TRUE;
1787 /* Support for core dump NOTE sections. */
1790 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1795 switch (note->descsz)
1800 case 268: /* Linux/PPC. */
1802 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1805 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1814 /* Make a ".reg/999" section. */
1815 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1816 size, note->descpos + offset);
1820 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1822 switch (note->descsz)
1827 case 128: /* Linux/PPC elf_prpsinfo. */
1828 elf_tdata (abfd)->core_program
1829 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1830 elf_tdata (abfd)->core_command
1831 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1834 /* Note that for some reason, a spurious space is tacked
1835 onto the end of the args in some (at least one anyway)
1836 implementations, so strip it off if it exists. */
1839 char *command = elf_tdata (abfd)->core_command;
1840 int n = strlen (command);
1842 if (0 < n && command[n - 1] == ' ')
1843 command[n - 1] = '\0';
1850 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1862 va_start (ap, note_type);
1863 memset (data, 0, 32);
1864 strncpy (data + 32, va_arg (ap, const char *), 16);
1865 strncpy (data + 48, va_arg (ap, const char *), 80);
1867 return elfcore_write_note (abfd, buf, bufsiz,
1868 "CORE", note_type, data, sizeof (data));
1879 va_start (ap, note_type);
1880 memset (data, 0, 72);
1881 pid = va_arg (ap, long);
1882 bfd_put_32 (abfd, pid, data + 24);
1883 cursig = va_arg (ap, int);
1884 bfd_put_16 (abfd, cursig, data + 12);
1885 greg = va_arg (ap, const void *);
1886 memcpy (data + 72, greg, 192);
1887 memset (data + 264, 0, 4);
1889 return elfcore_write_note (abfd, buf, bufsiz,
1890 "CORE", note_type, data, sizeof (data));
1895 /* Return address for Ith PLT stub in section PLT, for relocation REL
1896 or (bfd_vma) -1 if it should not be included. */
1899 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1900 const asection *plt ATTRIBUTE_UNUSED,
1903 return rel->address;
1906 /* Handle a PowerPC specific section when reading an object file. This
1907 is called when bfd_section_from_shdr finds a section with an unknown
1911 ppc_elf_section_from_shdr (bfd *abfd,
1912 Elf_Internal_Shdr *hdr,
1919 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1922 newsect = hdr->bfd_section;
1923 flags = bfd_get_section_flags (abfd, newsect);
1924 if (hdr->sh_flags & SHF_EXCLUDE)
1925 flags |= SEC_EXCLUDE;
1927 if (hdr->sh_type == SHT_ORDERED)
1928 flags |= SEC_SORT_ENTRIES;
1930 bfd_set_section_flags (abfd, newsect, flags);
1934 /* Set up any other section flags and such that may be necessary. */
1937 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1938 Elf_Internal_Shdr *shdr,
1941 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1942 shdr->sh_flags |= SHF_EXCLUDE;
1944 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1945 shdr->sh_type = SHT_ORDERED;
1950 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1951 need to bump up the number of section headers. */
1954 ppc_elf_additional_program_headers (bfd *abfd,
1955 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1960 s = bfd_get_section_by_name (abfd, ".sbss2");
1961 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1964 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1965 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1971 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1972 .PPC.EMB.sbss0 a normal section, and not a bss section so
1973 that the linker doesn't crater when trying to make more than
1976 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1978 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1979 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1980 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1981 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1982 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1983 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1984 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1985 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1986 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1987 { NULL, 0, 0, 0, 0 }
1990 /* This is what we want for new plt/got. */
1991 static struct bfd_elf_special_section ppc_alt_plt =
1992 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1994 static const struct bfd_elf_special_section *
1995 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1997 const struct bfd_elf_special_section *ssect;
1999 /* See if this is one of the special sections. */
2000 if (sec->name == NULL)
2003 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2007 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2008 ssect = &ppc_alt_plt;
2012 return _bfd_elf_get_sec_type_attr (abfd, sec);
2015 /* Very simple linked list structure for recording apuinfo values. */
2016 typedef struct apuinfo_list
2018 struct apuinfo_list *next;
2019 unsigned long value;
2023 static apuinfo_list *head;
2027 apuinfo_list_init (void)
2033 apuinfo_list_add (unsigned long value)
2035 apuinfo_list *entry = head;
2037 while (entry != NULL)
2039 if (entry->value == value)
2041 entry = entry->next;
2044 entry = bfd_malloc (sizeof (* entry));
2048 entry->value = value;
2054 apuinfo_list_length (void)
2056 apuinfo_list *entry;
2057 unsigned long count;
2059 for (entry = head, count = 0;
2061 entry = entry->next)
2067 static inline unsigned long
2068 apuinfo_list_element (unsigned long number)
2070 apuinfo_list * entry;
2074 entry = entry->next)
2077 return entry ? entry->value : 0;
2081 apuinfo_list_finish (void)
2083 apuinfo_list *entry;
2085 for (entry = head; entry;)
2087 apuinfo_list *next = entry->next;
2095 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2096 #define APUINFO_LABEL "APUinfo"
2098 /* Scan the input BFDs and create a linked list of
2099 the APUinfo values that will need to be emitted. */
2102 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2107 unsigned num_input_sections;
2108 bfd_size_type output_section_size;
2110 unsigned num_entries;
2111 unsigned long offset;
2112 unsigned long length;
2113 const char *error_message = NULL;
2115 if (link_info == NULL)
2118 /* Scan the input bfds, looking for apuinfo sections. */
2119 num_input_sections = 0;
2120 output_section_size = 0;
2122 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2124 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2127 ++ num_input_sections;
2128 output_section_size += asec->size;
2132 /* We need at least one input sections
2133 in order to make merging worthwhile. */
2134 if (num_input_sections < 1)
2137 /* Just make sure that the output section exists as well. */
2138 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2142 /* Allocate a buffer for the contents of the input sections. */
2143 buffer = bfd_malloc (output_section_size);
2148 apuinfo_list_init ();
2150 /* Read in the input sections contents. */
2151 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2153 unsigned long datum;
2156 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2160 length = asec->size;
2163 error_message = _("corrupt or empty %s section in %B");
2167 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2168 || (bfd_bread (buffer + offset, length, ibfd) != length))
2170 error_message = _("unable to read in %s section from %B");
2174 /* Process the contents of the section. */
2175 ptr = buffer + offset;
2176 error_message = _("corrupt %s section in %B");
2178 /* Verify the contents of the header. Note - we have to
2179 extract the values this way in order to allow for a
2180 host whose endian-ness is different from the target. */
2181 datum = bfd_get_32 (ibfd, ptr);
2182 if (datum != sizeof APUINFO_LABEL)
2185 datum = bfd_get_32 (ibfd, ptr + 8);
2189 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2192 /* Get the number of bytes used for apuinfo entries. */
2193 datum = bfd_get_32 (ibfd, ptr + 4);
2194 if (datum + 20 != length)
2197 /* Make sure that we do not run off the end of the section. */
2198 if (offset + length > output_section_size)
2201 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2202 for (i = 0; i < datum; i += 4)
2203 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2205 /* Update the offset. */
2209 error_message = NULL;
2211 /* Compute the size of the output section. */
2212 num_entries = apuinfo_list_length ();
2213 output_section_size = 20 + num_entries * 4;
2215 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2217 if (! bfd_set_section_size (abfd, asec, output_section_size))
2219 error_message = _("warning: unable to set size of %s section in %B");
2225 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2228 /* Prevent the output section from accumulating the input sections'
2229 contents. We have already stored this in our linked list structure. */
2232 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2233 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2235 bfd_byte *contents ATTRIBUTE_UNUSED)
2237 return (apuinfo_list_length ()
2238 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2241 /* Finally we can generate the output section. */
2244 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2249 unsigned num_entries;
2250 bfd_size_type length;
2252 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2256 if (apuinfo_list_length () == 0)
2259 length = asec->size;
2263 buffer = bfd_malloc (length);
2266 (*_bfd_error_handler)
2267 (_("failed to allocate space for new APUinfo section."));
2271 /* Create the apuinfo header. */
2272 num_entries = apuinfo_list_length ();
2273 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2274 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2275 bfd_put_32 (abfd, 0x2, buffer + 8);
2276 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2279 for (i = 0; i < num_entries; i++)
2281 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2285 if (length != asec->size)
2286 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2288 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2289 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2293 apuinfo_list_finish ();
2296 /* The following functions are specific to the ELF linker, while
2297 functions above are used generally. They appear in this file more
2298 or less in the order in which they are called. eg.
2299 ppc_elf_check_relocs is called early in the link process,
2300 ppc_elf_finish_dynamic_sections is one of the last functions
2303 /* The PPC linker needs to keep track of the number of relocs that it
2304 decides to copy as dynamic relocs in check_relocs for each symbol.
2305 This is so that it can later discard them if they are found to be
2306 unnecessary. We store the information in a field extending the
2307 regular ELF linker hash table. */
2309 struct ppc_elf_dyn_relocs
2311 struct ppc_elf_dyn_relocs *next;
2313 /* The input section of the reloc. */
2316 /* Total number of relocs copied for the input section. */
2317 bfd_size_type count;
2319 /* Number of pc-relative relocs copied for the input section. */
2320 bfd_size_type pc_count;
2323 /* Track PLT entries needed for a given symbol. We might need more
2324 than one glink entry per symbol. */
2327 struct plt_entry *next;
2329 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2330 This field stores the offset into .got2 used to initialise the
2331 GOT pointer reg. It will always be at least 32768 (and for
2332 current gcc this is the only offset used). */
2335 /* The .got2 section. */
2338 /* PLT refcount or offset. */
2341 bfd_signed_vma refcount;
2345 /* .glink stub offset. */
2346 bfd_vma glink_offset;
2349 /* Of those relocs that might be copied as dynamic relocs, this macro
2350 selects those that must be copied when linking a shared library,
2351 even when the symbol is local. */
2353 #define MUST_BE_DYN_RELOC(RTYPE) \
2354 ((RTYPE) != R_PPC_REL24 \
2355 && (RTYPE) != R_PPC_REL14 \
2356 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2357 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2358 && (RTYPE) != R_PPC_REL32)
2360 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2361 copying dynamic variables from a shared lib into an app's dynbss
2362 section, and instead use a dynamic relocation to point into the
2364 #define ELIMINATE_COPY_RELOCS 1
2366 /* PPC ELF linker hash entry. */
2368 struct ppc_elf_link_hash_entry
2370 struct elf_link_hash_entry elf;
2372 /* If this symbol is used in the linker created sections, the processor
2373 specific backend uses this field to map the field into the offset
2374 from the beginning of the section. */
2375 elf_linker_section_pointers_t *linker_section_pointer;
2377 /* Track dynamic relocs copied for this symbol. */
2378 struct ppc_elf_dyn_relocs *dyn_relocs;
2380 /* Contexts in which symbol is used in the GOT (or TOC).
2381 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2382 corresponding relocs are encountered during check_relocs.
2383 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2384 indicate the corresponding GOT entry type is not needed. */
2385 #define TLS_GD 1 /* GD reloc. */
2386 #define TLS_LD 2 /* LD reloc. */
2387 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2388 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2389 #define TLS_TLS 16 /* Any TLS reloc. */
2390 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2393 /* Nonzero if we have seen a small data relocation referring to this
2395 unsigned char has_sda_refs;
2398 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2400 /* PPC ELF linker hash table. */
2402 struct ppc_elf_link_hash_table
2404 struct elf_link_hash_table elf;
2406 /* Short-cuts to get to dynamic linker sections. */
2416 elf_linker_section_t sdata[2];
2419 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2422 /* The .got.plt section (VxWorks only)*/
2425 /* Shortcut to .__tls_get_addr. */
2426 struct elf_link_hash_entry *tls_get_addr;
2428 /* The bfd that forced an old-style PLT. */
2431 /* TLS local dynamic got entry handling. */
2433 bfd_signed_vma refcount;
2437 /* Offset of PltResolve function in glink. */
2438 bfd_vma glink_pltresolve;
2440 /* Size of reserved GOT entries. */
2441 unsigned int got_header_size;
2442 /* Non-zero if allocating the header left a gap. */
2443 unsigned int got_gap;
2445 /* The type of PLT we have chosen to use. */
2446 enum ppc_elf_plt_type plt_type;
2448 /* Set if we should emit symbols for stubs. */
2449 unsigned int emit_stub_syms:1;
2451 /* True if the target system is VxWorks. */
2452 unsigned int is_vxworks:1;
2454 /* The size of PLT entries. */
2456 /* The distance between adjacent PLT slots. */
2458 /* The size of the first PLT entry. */
2459 int plt_initial_entry_size;
2461 /* Small local sym to section mapping cache. */
2462 struct sym_sec_cache sym_sec;
2465 /* Get the PPC ELF linker hash table from a link_info structure. */
2467 #define ppc_elf_hash_table(p) \
2468 ((struct ppc_elf_link_hash_table *) (p)->hash)
2470 /* Create an entry in a PPC ELF linker hash table. */
2472 static struct bfd_hash_entry *
2473 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2474 struct bfd_hash_table *table,
2477 /* Allocate the structure if it has not already been allocated by a
2481 entry = bfd_hash_allocate (table,
2482 sizeof (struct ppc_elf_link_hash_entry));
2487 /* Call the allocation method of the superclass. */
2488 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2491 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2492 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2493 ppc_elf_hash_entry (entry)->tls_mask = 0;
2499 /* Create a PPC ELF linker hash table. */
2501 static struct bfd_link_hash_table *
2502 ppc_elf_link_hash_table_create (bfd *abfd)
2504 struct ppc_elf_link_hash_table *ret;
2506 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2510 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2511 ppc_elf_link_hash_newfunc,
2512 sizeof (struct ppc_elf_link_hash_entry)))
2518 ret->elf.init_plt_refcount.refcount = 0;
2519 ret->elf.init_plt_refcount.glist = NULL;
2520 ret->elf.init_plt_offset.offset = 0;
2521 ret->elf.init_plt_offset.glist = NULL;
2523 ret->sdata[0].name = ".sdata";
2524 ret->sdata[0].sym_name = "_SDA_BASE_";
2525 ret->sdata[0].bss_name = ".sbss";
2527 ret->sdata[1].name = ".sdata2";
2528 ret->sdata[1].sym_name = "_SDA2_BASE_";
2529 ret->sdata[1].bss_name = ".sbss2";
2531 ret->plt_entry_size = 12;
2532 ret->plt_slot_size = 8;
2533 ret->plt_initial_entry_size = 72;
2535 return &ret->elf.root;
2538 /* Create .got and the related sections. */
2541 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2543 struct ppc_elf_link_hash_table *htab;
2547 if (!_bfd_elf_create_got_section (abfd, info))
2550 htab = ppc_elf_hash_table (info);
2551 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2555 if (htab->is_vxworks)
2557 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2563 /* The powerpc .got has a blrl instruction in it. Mark it
2565 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2566 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2567 if (!bfd_set_section_flags (abfd, s, flags))
2571 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2572 | SEC_LINKER_CREATED | SEC_READONLY);
2573 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2575 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2581 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2582 to output sections (just like _bfd_elf_create_dynamic_sections has
2583 to create .dynbss and .rela.bss). */
2586 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2588 struct ppc_elf_link_hash_table *htab;
2592 htab = ppc_elf_hash_table (info);
2594 if (htab->got == NULL
2595 && !ppc_elf_create_got (abfd, info))
2598 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2601 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2602 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2604 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2607 || !bfd_set_section_alignment (abfd, s, 4))
2610 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2611 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2612 SEC_ALLOC | SEC_LINKER_CREATED);
2619 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2620 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2623 || ! bfd_set_section_alignment (abfd, s, 2))
2627 if (htab->is_vxworks
2628 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2631 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2632 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2636 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2637 if (htab->plt_type == PLT_VXWORKS)
2638 /* The VxWorks PLT is a loaded section with contents. */
2639 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2640 return bfd_set_section_flags (abfd, s, flags);
2643 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2646 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2647 struct elf_link_hash_entry *dir,
2648 struct elf_link_hash_entry *ind)
2650 struct ppc_elf_link_hash_entry *edir, *eind;
2652 edir = (struct ppc_elf_link_hash_entry *) dir;
2653 eind = (struct ppc_elf_link_hash_entry *) ind;
2655 if (eind->dyn_relocs != NULL)
2657 if (edir->dyn_relocs != NULL)
2659 struct ppc_elf_dyn_relocs **pp;
2660 struct ppc_elf_dyn_relocs *p;
2662 /* Add reloc counts against the indirect sym to the direct sym
2663 list. Merge any entries against the same section. */
2664 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2666 struct ppc_elf_dyn_relocs *q;
2668 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2669 if (q->sec == p->sec)
2671 q->pc_count += p->pc_count;
2672 q->count += p->count;
2679 *pp = edir->dyn_relocs;
2682 edir->dyn_relocs = eind->dyn_relocs;
2683 eind->dyn_relocs = NULL;
2686 edir->tls_mask |= eind->tls_mask;
2687 edir->has_sda_refs |= eind->has_sda_refs;
2689 /* If called to transfer flags for a weakdef during processing
2690 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2691 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2692 if (!(ELIMINATE_COPY_RELOCS
2693 && eind->elf.root.type != bfd_link_hash_indirect
2694 && edir->elf.dynamic_adjusted))
2695 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2697 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2698 edir->elf.ref_regular |= eind->elf.ref_regular;
2699 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2700 edir->elf.needs_plt |= eind->elf.needs_plt;
2702 /* If we were called to copy over info for a weak sym, that's all. */
2703 if (eind->elf.root.type != bfd_link_hash_indirect)
2706 /* Copy over the GOT refcount entries that we may have already seen to
2707 the symbol which just became indirect. */
2708 edir->elf.got.refcount += eind->elf.got.refcount;
2709 eind->elf.got.refcount = 0;
2711 /* And plt entries. */
2712 if (eind->elf.plt.plist != NULL)
2714 if (edir->elf.plt.plist != NULL)
2716 struct plt_entry **entp;
2717 struct plt_entry *ent;
2719 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2721 struct plt_entry *dent;
2723 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2724 if (dent->sec == ent->sec && dent->addend == ent->addend)
2726 dent->plt.refcount += ent->plt.refcount;
2733 *entp = edir->elf.plt.plist;
2736 edir->elf.plt.plist = eind->elf.plt.plist;
2737 eind->elf.plt.plist = NULL;
2740 if (eind->elf.dynindx != -1)
2742 if (edir->elf.dynindx != -1)
2743 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2744 edir->elf.dynstr_index);
2745 edir->elf.dynindx = eind->elf.dynindx;
2746 edir->elf.dynstr_index = eind->elf.dynstr_index;
2747 eind->elf.dynindx = -1;
2748 eind->elf.dynstr_index = 0;
2752 /* Return 1 if target is one of ours. */
2755 is_ppc_elf_target (const struct bfd_target *targ)
2757 extern const bfd_target bfd_elf32_powerpc_vec;
2758 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
2759 extern const bfd_target bfd_elf32_powerpcle_vec;
2761 return (targ == &bfd_elf32_powerpc_vec
2762 || targ == &bfd_elf32_powerpc_vxworks_vec
2763 || targ == &bfd_elf32_powerpcle_vec);
2766 /* Hook called by the linker routine which adds symbols from an object
2767 file. We use it to put .comm items in .sbss, and not .bss. */
2770 ppc_elf_add_symbol_hook (bfd *abfd,
2771 struct bfd_link_info *info,
2772 Elf_Internal_Sym *sym,
2773 const char **namep ATTRIBUTE_UNUSED,
2774 flagword *flagsp ATTRIBUTE_UNUSED,
2778 if (sym->st_shndx == SHN_COMMON
2779 && !info->relocatable
2780 && sym->st_size <= elf_gp_size (abfd)
2781 && is_ppc_elf_target (info->hash->creator))
2783 /* Common symbols less than or equal to -G nn bytes are automatically
2785 struct ppc_elf_link_hash_table *htab;
2787 htab = ppc_elf_hash_table (info);
2788 if (htab->sbss == NULL)
2790 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2792 if (!htab->elf.dynobj)
2793 htab->elf.dynobj = abfd;
2795 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2798 if (htab->sbss == NULL)
2803 *valp = sym->st_size;
2810 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2811 elf_linker_section_t *lsect)
2813 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2815 if (lsect->sym == NULL)
2817 if (lsect->sym->root.type == bfd_link_hash_new)
2818 lsect->sym->non_elf = 0;
2819 lsect->sym->ref_regular = 1;
2823 /* Create a special linker section. */
2826 ppc_elf_create_linker_section (bfd *abfd,
2827 struct bfd_link_info *info,
2829 elf_linker_section_t *lsect)
2831 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2834 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2835 | SEC_LINKER_CREATED);
2837 /* Record the first bfd that needs the special sections. */
2838 if (!htab->elf.dynobj)
2839 htab->elf.dynobj = abfd;
2841 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2845 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2849 return create_sdata_sym (htab, lsect);
2852 /* Find a linker generated pointer with a given addend and type. */
2854 static elf_linker_section_pointers_t *
2855 elf_find_pointer_linker_section
2856 (elf_linker_section_pointers_t *linker_pointers,
2858 elf_linker_section_t *lsect)
2860 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2861 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2862 return linker_pointers;
2867 /* Allocate a pointer to live in a linker created section. */
2870 elf_create_pointer_linker_section (bfd *abfd,
2871 elf_linker_section_t *lsect,
2872 struct elf_link_hash_entry *h,
2873 const Elf_Internal_Rela *rel)
2875 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2876 elf_linker_section_pointers_t *linker_section_ptr;
2877 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2880 BFD_ASSERT (lsect != NULL);
2882 /* Is this a global symbol? */
2885 struct ppc_elf_link_hash_entry *eh;
2887 /* Has this symbol already been allocated? If so, our work is done. */
2888 eh = (struct ppc_elf_link_hash_entry *) h;
2889 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2894 ptr_linker_section_ptr = &eh->linker_section_pointer;
2898 /* Allocation of a pointer to a local symbol. */
2899 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2901 /* Allocate a table to hold the local symbols if first time. */
2904 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2907 amt *= sizeof (elf_linker_section_pointers_t *);
2908 ptr = bfd_zalloc (abfd, amt);
2913 elf_local_ptr_offsets (abfd) = ptr;
2916 /* Has this symbol already been allocated? If so, our work is done. */
2917 if (elf_find_pointer_linker_section (ptr[r_symndx],
2922 ptr_linker_section_ptr = &ptr[r_symndx];
2925 /* Allocate space for a pointer in the linker section, and allocate
2926 a new pointer record from internal memory. */
2927 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2928 amt = sizeof (elf_linker_section_pointers_t);
2929 linker_section_ptr = bfd_alloc (abfd, amt);
2931 if (!linker_section_ptr)
2934 linker_section_ptr->next = *ptr_linker_section_ptr;
2935 linker_section_ptr->addend = rel->r_addend;
2936 linker_section_ptr->lsect = lsect;
2937 *ptr_linker_section_ptr = linker_section_ptr;
2939 linker_section_ptr->offset = lsect->section->size;
2940 lsect->section->size += 4;
2944 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2945 lsect->name, (long) linker_section_ptr->offset,
2946 (long) lsect->section->size);
2953 update_local_sym_info (bfd *abfd,
2954 Elf_Internal_Shdr *symtab_hdr,
2955 unsigned long r_symndx,
2958 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2959 char *local_got_tls_masks;
2961 if (local_got_refcounts == NULL)
2963 bfd_size_type size = symtab_hdr->sh_info;
2965 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2966 local_got_refcounts = bfd_zalloc (abfd, size);
2967 if (local_got_refcounts == NULL)
2969 elf_local_got_refcounts (abfd) = local_got_refcounts;
2972 local_got_refcounts[r_symndx] += 1;
2973 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2974 local_got_tls_masks[r_symndx] |= tls_type;
2979 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2980 asection *sec, bfd_vma addend)
2982 struct plt_entry *ent;
2986 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2987 if (ent->sec == sec && ent->addend == addend)
2991 bfd_size_type amt = sizeof (*ent);
2992 ent = bfd_alloc (abfd, amt);
2995 ent->next = h->plt.plist;
2997 ent->addend = addend;
2998 ent->plt.refcount = 0;
3001 ent->plt.refcount += 1;
3005 static struct plt_entry *
3006 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3008 struct plt_entry *ent;
3012 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3013 if (ent->sec == sec && ent->addend == addend)
3019 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3021 (*_bfd_error_handler)
3022 (_("%B: relocation %s cannot be used when making a shared object"),
3024 ppc_elf_howto_table[r_type]->name);
3025 bfd_set_error (bfd_error_bad_value);
3028 /* Look through the relocs for a section during the first phase, and
3029 allocate space in the global offset table or procedure linkage
3033 ppc_elf_check_relocs (bfd *abfd,
3034 struct bfd_link_info *info,
3036 const Elf_Internal_Rela *relocs)
3038 struct ppc_elf_link_hash_table *htab;
3039 Elf_Internal_Shdr *symtab_hdr;
3040 struct elf_link_hash_entry **sym_hashes;
3041 const Elf_Internal_Rela *rel;
3042 const Elf_Internal_Rela *rel_end;
3043 asection *got2, *sreloc;
3045 if (info->relocatable)
3048 /* Don't do anything special with non-loaded, non-alloced sections.
3049 In particular, any relocs in such sections should not affect GOT
3050 and PLT reference counting (ie. we don't allow them to create GOT
3051 or PLT entries), there's no possibility or desire to optimize TLS
3052 relocs, and there's not much point in propagating relocs to shared
3053 libs that the dynamic linker won't relocate. */
3054 if ((sec->flags & SEC_ALLOC) == 0)
3058 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3062 /* Initialize howto table if not already done. */
3063 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3064 ppc_elf_howto_init ();
3066 htab = ppc_elf_hash_table (info);
3067 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3068 sym_hashes = elf_sym_hashes (abfd);
3069 got2 = bfd_get_section_by_name (abfd, ".got2");
3072 rel_end = relocs + sec->reloc_count;
3073 for (rel = relocs; rel < rel_end; rel++)
3075 unsigned long r_symndx;
3076 enum elf_ppc_reloc_type r_type;
3077 struct elf_link_hash_entry *h;
3080 r_symndx = ELF32_R_SYM (rel->r_info);
3081 if (r_symndx < symtab_hdr->sh_info)
3085 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3086 while (h->root.type == bfd_link_hash_indirect
3087 || h->root.type == bfd_link_hash_warning)
3088 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3091 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3092 This shows up in particular in an R_PPC_ADDR32 in the eabi
3095 && htab->got == NULL
3096 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3098 if (htab->elf.dynobj == NULL)
3099 htab->elf.dynobj = abfd;
3100 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3102 BFD_ASSERT (h == htab->elf.hgot);
3105 r_type = ELF32_R_TYPE (rel->r_info);
3108 case R_PPC_GOT_TLSLD16:
3109 case R_PPC_GOT_TLSLD16_LO:
3110 case R_PPC_GOT_TLSLD16_HI:
3111 case R_PPC_GOT_TLSLD16_HA:
3112 tls_type = TLS_TLS | TLS_LD;
3115 case R_PPC_GOT_TLSGD16:
3116 case R_PPC_GOT_TLSGD16_LO:
3117 case R_PPC_GOT_TLSGD16_HI:
3118 case R_PPC_GOT_TLSGD16_HA:
3119 tls_type = TLS_TLS | TLS_GD;
3122 case R_PPC_GOT_TPREL16:
3123 case R_PPC_GOT_TPREL16_LO:
3124 case R_PPC_GOT_TPREL16_HI:
3125 case R_PPC_GOT_TPREL16_HA:
3127 info->flags |= DF_STATIC_TLS;
3128 tls_type = TLS_TLS | TLS_TPREL;
3131 case R_PPC_GOT_DTPREL16:
3132 case R_PPC_GOT_DTPREL16_LO:
3133 case R_PPC_GOT_DTPREL16_HI:
3134 case R_PPC_GOT_DTPREL16_HA:
3135 tls_type = TLS_TLS | TLS_DTPREL;
3137 sec->has_tls_reloc = 1;
3140 /* GOT16 relocations */
3142 case R_PPC_GOT16_LO:
3143 case R_PPC_GOT16_HI:
3144 case R_PPC_GOT16_HA:
3145 /* This symbol requires a global offset table entry. */
3146 if (htab->got == NULL)
3148 if (htab->elf.dynobj == NULL)
3149 htab->elf.dynobj = abfd;
3150 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3155 h->got.refcount += 1;
3156 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3159 /* This is a global offset table entry for a local symbol. */
3160 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3164 /* Indirect .sdata relocation. */
3165 case R_PPC_EMB_SDAI16:
3168 bad_shared_reloc (abfd, r_type);
3171 if (htab->sdata[0].section == NULL
3172 && !ppc_elf_create_linker_section (abfd, info, 0,
3175 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3180 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3181 h->non_got_ref = TRUE;
3185 /* Indirect .sdata2 relocation. */
3186 case R_PPC_EMB_SDA2I16:
3189 bad_shared_reloc (abfd, r_type);
3192 if (htab->sdata[1].section == NULL
3193 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3196 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3201 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3202 h->non_got_ref = TRUE;
3206 case R_PPC_SDAREL16:
3209 bad_shared_reloc (abfd, r_type);
3212 if (htab->sdata[0].sym == NULL
3213 && !create_sdata_sym (htab, &htab->sdata[0]))
3217 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3218 h->non_got_ref = TRUE;
3222 case R_PPC_EMB_SDA2REL:
3225 bad_shared_reloc (abfd, r_type);
3228 if (htab->sdata[1].sym == NULL
3229 && !create_sdata_sym (htab, &htab->sdata[1]))
3233 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3234 h->non_got_ref = TRUE;
3238 case R_PPC_EMB_SDA21:
3239 case R_PPC_EMB_RELSDA:
3242 bad_shared_reloc (abfd, r_type);
3245 if (htab->sdata[0].sym == NULL
3246 && !create_sdata_sym (htab, &htab->sdata[0]))
3248 if (htab->sdata[1].sym == NULL
3249 && !create_sdata_sym (htab, &htab->sdata[1]))
3253 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3254 h->non_got_ref = TRUE;
3258 case R_PPC_EMB_NADDR32:
3259 case R_PPC_EMB_NADDR16:
3260 case R_PPC_EMB_NADDR16_LO:
3261 case R_PPC_EMB_NADDR16_HI:
3262 case R_PPC_EMB_NADDR16_HA:
3265 bad_shared_reloc (abfd, r_type);
3269 h->non_got_ref = TRUE;
3273 case R_PPC_PLTREL24:
3274 case R_PPC_PLTREL32:
3275 case R_PPC_PLT16_LO:
3276 case R_PPC_PLT16_HI:
3277 case R_PPC_PLT16_HA:
3279 fprintf (stderr, "Reloc requires a PLT entry\n");
3281 /* This symbol requires a procedure linkage table entry. We
3282 actually build the entry in finish_dynamic_symbol,
3283 because this might be a case of linking PIC code without
3284 linking in any dynamic objects, in which case we don't
3285 need to generate a procedure linkage table after all. */
3289 /* It does not make sense to have a procedure linkage
3290 table entry for a local symbol. */
3291 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3295 (long) rel->r_offset,
3296 ppc_elf_howto_table[r_type]->name);
3297 bfd_set_error (bfd_error_bad_value);
3304 if (r_type == R_PPC_PLTREL24)
3306 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3307 addend = rel->r_addend;
3310 if (!update_plt_info (abfd, h, got2, addend))
3315 /* The following relocations don't need to propagate the
3316 relocation if linking a shared object since they are
3317 section relative. */
3319 case R_PPC_SECTOFF_LO:
3320 case R_PPC_SECTOFF_HI:
3321 case R_PPC_SECTOFF_HA:
3322 case R_PPC_DTPREL16:
3323 case R_PPC_DTPREL16_LO:
3324 case R_PPC_DTPREL16_HI:
3325 case R_PPC_DTPREL16_HA:
3330 case R_PPC_REL16_LO:
3331 case R_PPC_REL16_HI:
3332 case R_PPC_REL16_HA:
3333 ppc_elf_tdata (abfd)->has_rel16 = 1;
3336 /* These are just markers. */
3338 case R_PPC_EMB_MRKREF:
3343 /* These should only appear in dynamic objects. */
3345 case R_PPC_GLOB_DAT:
3346 case R_PPC_JMP_SLOT:
3347 case R_PPC_RELATIVE:
3350 /* These aren't handled yet. We'll report an error later. */
3352 case R_PPC_EMB_RELSEC16:
3353 case R_PPC_EMB_RELST_LO:
3354 case R_PPC_EMB_RELST_HI:
3355 case R_PPC_EMB_RELST_HA:
3356 case R_PPC_EMB_BIT_FLD:
3359 /* This refers only to functions defined in the shared library. */
3360 case R_PPC_LOCAL24PC:
3361 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3363 htab->plt_type = PLT_OLD;
3364 htab->old_bfd = abfd;
3368 /* This relocation describes the C++ object vtable hierarchy.
3369 Reconstruct it for later use during GC. */
3370 case R_PPC_GNU_VTINHERIT:
3371 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3375 /* This relocation describes which C++ vtable entries are actually
3376 used. Record for later use during GC. */
3377 case R_PPC_GNU_VTENTRY:
3378 BFD_ASSERT (h != NULL);
3380 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3384 /* We shouldn't really be seeing these. */
3387 info->flags |= DF_STATIC_TLS;
3391 case R_PPC_DTPMOD32:
3392 case R_PPC_DTPREL32:
3396 case R_PPC_TPREL16_LO:
3397 case R_PPC_TPREL16_HI:
3398 case R_PPC_TPREL16_HA:
3400 info->flags |= DF_STATIC_TLS;
3406 && (sec->flags & SEC_CODE) != 0
3407 && (info->shared || info->pie)
3408 && htab->plt_type == PLT_UNSET)
3410 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3411 the start of a function, which assembles to a REL32
3412 reference to .got2. If we detect one of these, then
3413 force the old PLT layout because the linker cannot
3414 reliably deduce the GOT pointer value needed for
3418 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3422 htab->plt_type = PLT_OLD;
3423 htab->old_bfd = abfd;
3426 if (h == NULL || h == htab->elf.hgot)
3432 case R_PPC_REL14_BRTAKEN:
3433 case R_PPC_REL14_BRNTAKEN:
3436 if (h == htab->elf.hgot)
3438 if (htab->plt_type == PLT_UNSET)
3440 htab->plt_type = PLT_OLD;
3441 htab->old_bfd = abfd;
3450 case R_PPC_ADDR16_LO:
3451 case R_PPC_ADDR16_HI:
3452 case R_PPC_ADDR16_HA:
3454 case R_PPC_ADDR14_BRTAKEN:
3455 case R_PPC_ADDR14_BRNTAKEN:
3459 if (h != NULL && !info->shared)
3461 /* We may need a plt entry if the symbol turns out to be
3462 a function defined in a dynamic object. */
3463 if (!update_plt_info (abfd, h, NULL, 0))
3466 /* We may need a copy reloc too. */
3471 /* If we are creating a shared library, and this is a reloc
3472 against a global symbol, or a non PC relative reloc
3473 against a local symbol, then we need to copy the reloc
3474 into the shared library. However, if we are linking with
3475 -Bsymbolic, we do not need to copy a reloc against a
3476 global symbol which is defined in an object we are
3477 including in the link (i.e., DEF_REGULAR is set). At
3478 this point we have not seen all the input files, so it is
3479 possible that DEF_REGULAR is not set now but will be set
3480 later (it is never cleared). In case of a weak definition,
3481 DEF_REGULAR may be cleared later by a strong definition in
3482 a shared library. We account for that possibility below by
3483 storing information in the dyn_relocs field of the hash
3484 table entry. A similar situation occurs when creating
3485 shared libraries and symbol visibility changes render the
3488 If on the other hand, we are creating an executable, we
3489 may need to keep relocations for symbols satisfied by a
3490 dynamic library if we manage to avoid copy relocs for the
3493 && (MUST_BE_DYN_RELOC (r_type)
3495 && (! info->symbolic
3496 || h->root.type == bfd_link_hash_defweak
3497 || !h->def_regular))))
3498 || (ELIMINATE_COPY_RELOCS
3501 && (h->root.type == bfd_link_hash_defweak
3502 || !h->def_regular)))
3504 struct ppc_elf_dyn_relocs *p;
3505 struct ppc_elf_dyn_relocs **head;
3509 "ppc_elf_check_relocs needs to "
3510 "create relocation for %s\n",
3511 (h && h->root.root.string
3512 ? h->root.root.string : "<unknown>"));
3518 name = (bfd_elf_string_from_elf_section
3520 elf_elfheader (abfd)->e_shstrndx,
3521 elf_section_data (sec)->rel_hdr.sh_name));
3525 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3526 && strcmp (bfd_get_section_name (abfd, sec),
3529 if (htab->elf.dynobj == NULL)
3530 htab->elf.dynobj = abfd;
3531 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3536 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3537 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3538 | SEC_ALLOC | SEC_LOAD);
3539 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3543 || ! bfd_set_section_alignment (htab->elf.dynobj,
3547 elf_section_data (sec)->sreloc = sreloc;
3550 /* If this is a global symbol, we count the number of
3551 relocations we need for this symbol. */
3554 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3558 /* Track dynamic relocs needed for local syms too.
3559 We really need local syms available to do this
3565 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3570 vpp = &elf_section_data (s)->local_dynrel;
3571 head = (struct ppc_elf_dyn_relocs **) vpp;
3575 if (p == NULL || p->sec != sec)
3577 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3588 if (!MUST_BE_DYN_RELOC (r_type))
3600 /* Merge object attributes from IBFD into OBFD. Raise an error if
3601 there are conflicting attributes. */
3603 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3605 obj_attribute *in_attr, *in_attrs;
3606 obj_attribute *out_attr, *out_attrs;
3608 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3610 /* This is the first object. Copy the attributes. */
3611 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3613 /* Use the Tag_null value to indicate the attributes have been
3615 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3620 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3621 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3623 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3624 non-conflicting ones. */
3625 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3626 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3627 if (in_attr->i != out_attr->i)
3630 if (out_attr->i == 0)
3631 out_attr->i = in_attr->i;
3632 else if (in_attr->i == 0)
3634 else if (out_attr->i == 1 && in_attr->i == 2)
3636 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3637 else if (out_attr->i == 2 && in_attr->i == 1)
3639 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3640 else if (in_attr->i > 2)
3642 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
3646 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
3650 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3651 merge non-conflicting ones. */
3652 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3653 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3654 if (in_attr->i != out_attr->i)
3656 const char *in_abi = NULL, *out_abi = NULL;
3660 case 1: in_abi = "generic"; break;
3661 case 2: in_abi = "AltiVec"; break;
3662 case 3: in_abi = "SPE"; break;
3665 switch (out_attr->i)
3667 case 1: out_abi = "generic"; break;
3668 case 2: out_abi = "AltiVec"; break;
3669 case 3: out_abi = "SPE"; break;
3673 if (out_attr->i == 0)
3674 out_attr->i = in_attr->i;
3675 else if (in_attr->i == 0)
3677 /* For now, allow generic to transition to AltiVec or SPE
3678 without a warning. If GCC marked files with their stack
3679 alignment and used don't-care markings for files which are
3680 not affected by the vector ABI, we could warn about this
3682 else if (out_attr->i == 1)
3683 out_attr->i = in_attr->i;
3684 else if (in_attr->i == 1)
3686 else if (in_abi == NULL)
3688 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3690 else if (out_abi == NULL)
3692 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3696 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3697 ibfd, obfd, in_abi, out_abi);
3700 /* Merge Tag_compatibility attributes and any common GNU ones. */
3701 _bfd_elf_merge_object_attributes (ibfd, obfd);
3706 /* Merge backend specific data from an object file to the output
3707 object file when linking. */
3710 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3716 if (!is_ppc_elf_target (ibfd->xvec)
3717 || !is_ppc_elf_target (obfd->xvec))
3720 /* Check if we have the same endianess. */
3721 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3724 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3727 new_flags = elf_elfheader (ibfd)->e_flags;
3728 old_flags = elf_elfheader (obfd)->e_flags;
3729 if (!elf_flags_init (obfd))
3731 /* First call, no flags set. */
3732 elf_flags_init (obfd) = TRUE;
3733 elf_elfheader (obfd)->e_flags = new_flags;
3736 /* Compatible flags are ok. */
3737 else if (new_flags == old_flags)
3740 /* Incompatible flags. */
3743 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3744 to be linked with either. */
3746 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3747 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3750 (*_bfd_error_handler)
3751 (_("%B: compiled with -mrelocatable and linked with "
3752 "modules compiled normally"), ibfd);
3754 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3755 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3758 (*_bfd_error_handler)
3759 (_("%B: compiled normally and linked with "
3760 "modules compiled with -mrelocatable"), ibfd);
3763 /* The output is -mrelocatable-lib iff both the input files are. */
3764 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3765 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3767 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3768 but each input file is either -mrelocatable or -mrelocatable-lib. */
3769 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3770 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3771 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3772 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3774 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3775 any module uses it. */
3776 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3778 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3779 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3781 /* Warn about any other mismatches. */
3782 if (new_flags != old_flags)
3785 (*_bfd_error_handler)
3786 (_("%B: uses different e_flags (0x%lx) fields "
3787 "than previous modules (0x%lx)"),
3788 ibfd, (long) new_flags, (long) old_flags);
3793 bfd_set_error (bfd_error_bad_value);
3801 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3802 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3804 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3805 struct bfd_link_info *info,
3806 enum ppc_elf_plt_type plt_style,
3809 struct ppc_elf_link_hash_table *htab;
3812 htab = ppc_elf_hash_table (info);
3814 if (htab->plt_type == PLT_UNSET)
3816 if (plt_style == PLT_OLD)
3817 htab->plt_type = PLT_OLD;
3821 enum ppc_elf_plt_type plt_type = plt_style;
3823 /* Look through the reloc flags left by ppc_elf_check_relocs.
3824 Use the old style bss plt if a file makes plt calls
3825 without using the new relocs, and if ld isn't given
3826 --secure-plt and we never see REL16 relocs. */
3827 if (plt_type == PLT_UNSET)
3829 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
3830 if (is_ppc_elf_target (ibfd->xvec))
3832 if (ppc_elf_tdata (ibfd)->has_rel16)
3834 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
3837 htab->old_bfd = ibfd;
3841 htab->plt_type = plt_type;
3844 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
3845 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
3847 htab->emit_stub_syms = emit_stub_syms;
3849 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3851 if (htab->plt_type == PLT_NEW)
3853 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3854 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3856 /* The new PLT is a loaded section. */
3857 if (htab->plt != NULL
3858 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3861 /* The new GOT is not executable. */
3862 if (htab->got != NULL
3863 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3868 /* Stop an unused .glink section from affecting .text alignment. */
3869 if (htab->glink != NULL
3870 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3873 return htab->plt_type == PLT_NEW;
3876 /* Return the section that should be marked against GC for a given
3880 ppc_elf_gc_mark_hook (asection *sec,
3881 struct bfd_link_info *info,
3882 Elf_Internal_Rela *rel,
3883 struct elf_link_hash_entry *h,
3884 Elf_Internal_Sym *sym)
3887 switch (ELF32_R_TYPE (rel->r_info))
3889 case R_PPC_GNU_VTINHERIT:
3890 case R_PPC_GNU_VTENTRY:
3894 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3897 /* Update the got, plt and dynamic reloc reference counts for the
3898 section being removed. */
3901 ppc_elf_gc_sweep_hook (bfd *abfd,
3902 struct bfd_link_info *info,
3904 const Elf_Internal_Rela *relocs)
3906 struct ppc_elf_link_hash_table *htab;
3907 Elf_Internal_Shdr *symtab_hdr;
3908 struct elf_link_hash_entry **sym_hashes;
3909 bfd_signed_vma *local_got_refcounts;
3910 const Elf_Internal_Rela *rel, *relend;
3913 if (info->relocatable)
3916 if ((sec->flags & SEC_ALLOC) == 0)
3919 elf_section_data (sec)->local_dynrel = NULL;
3921 htab = ppc_elf_hash_table (info);
3922 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3923 sym_hashes = elf_sym_hashes (abfd);
3924 local_got_refcounts = elf_local_got_refcounts (abfd);
3925 got2 = bfd_get_section_by_name (abfd, ".got2");
3927 relend = relocs + sec->reloc_count;
3928 for (rel = relocs; rel < relend; rel++)
3930 unsigned long r_symndx;
3931 enum elf_ppc_reloc_type r_type;
3932 struct elf_link_hash_entry *h = NULL;
3934 r_symndx = ELF32_R_SYM (rel->r_info);
3935 if (r_symndx >= symtab_hdr->sh_info)
3937 struct ppc_elf_dyn_relocs **pp, *p;
3938 struct ppc_elf_link_hash_entry *eh;
3940 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3941 while (h->root.type == bfd_link_hash_indirect
3942 || h->root.type == bfd_link_hash_warning)
3943 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3944 eh = (struct ppc_elf_link_hash_entry *) h;
3946 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3949 /* Everything must go for SEC. */
3955 r_type = ELF32_R_TYPE (rel->r_info);
3958 case R_PPC_GOT_TLSLD16:
3959 case R_PPC_GOT_TLSLD16_LO:
3960 case R_PPC_GOT_TLSLD16_HI:
3961 case R_PPC_GOT_TLSLD16_HA:
3962 case R_PPC_GOT_TLSGD16:
3963 case R_PPC_GOT_TLSGD16_LO:
3964 case R_PPC_GOT_TLSGD16_HI:
3965 case R_PPC_GOT_TLSGD16_HA:
3966 case R_PPC_GOT_TPREL16:
3967 case R_PPC_GOT_TPREL16_LO:
3968 case R_PPC_GOT_TPREL16_HI:
3969 case R_PPC_GOT_TPREL16_HA:
3970 case R_PPC_GOT_DTPREL16:
3971 case R_PPC_GOT_DTPREL16_LO:
3972 case R_PPC_GOT_DTPREL16_HI:
3973 case R_PPC_GOT_DTPREL16_HA:
3975 case R_PPC_GOT16_LO:
3976 case R_PPC_GOT16_HI:
3977 case R_PPC_GOT16_HA:
3980 if (h->got.refcount > 0)
3983 else if (local_got_refcounts != NULL)
3985 if (local_got_refcounts[r_symndx] > 0)
3986 local_got_refcounts[r_symndx]--;
3992 case R_PPC_REL14_BRTAKEN:
3993 case R_PPC_REL14_BRNTAKEN:
3995 if (h == NULL || h == htab->elf.hgot)
4002 case R_PPC_ADDR16_LO:
4003 case R_PPC_ADDR16_HI:
4004 case R_PPC_ADDR16_HA:
4006 case R_PPC_ADDR14_BRTAKEN:
4007 case R_PPC_ADDR14_BRNTAKEN:
4014 case R_PPC_PLTREL24:
4015 case R_PPC_PLTREL32:
4016 case R_PPC_PLT16_LO:
4017 case R_PPC_PLT16_HI:
4018 case R_PPC_PLT16_HA:
4021 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4022 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4023 if (ent->plt.refcount > 0)
4024 ent->plt.refcount -= 1;
4035 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4038 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4040 struct ppc_elf_link_hash_table *htab;
4042 htab = ppc_elf_hash_table (info);
4043 if (htab->plt_type == PLT_NEW
4044 && htab->plt != NULL
4045 && htab->plt->output_section != NULL)
4047 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4048 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4051 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4052 FALSE, FALSE, TRUE);
4053 return _bfd_elf_tls_setup (obfd, info);
4056 /* Run through all the TLS relocs looking for optimization
4060 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4061 struct bfd_link_info *info)
4065 struct ppc_elf_link_hash_table *htab;
4068 if (info->relocatable || info->shared)
4071 htab = ppc_elf_hash_table (info);
4072 /* Make two passes through the relocs. First time check that tls
4073 relocs involved in setting up a tls_get_addr call are indeed
4074 followed by such a call. If they are not, exclude them from
4075 the optimizations done on the second pass. */
4076 for (pass = 0; pass < 2; ++pass)
4077 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4079 Elf_Internal_Sym *locsyms = NULL;
4080 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4082 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4083 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4085 Elf_Internal_Rela *relstart, *rel, *relend;
4087 /* Read the relocations. */
4088 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4090 if (relstart == NULL)
4093 relend = relstart + sec->reloc_count;
4094 for (rel = relstart; rel < relend; rel++)
4096 enum elf_ppc_reloc_type r_type;
4097 unsigned long r_symndx;
4098 struct elf_link_hash_entry *h = NULL;
4100 char tls_set, tls_clear;
4101 bfd_boolean is_local;
4102 int expecting_tls_get_addr;
4103 bfd_signed_vma *got_count;
4105 r_symndx = ELF32_R_SYM (rel->r_info);
4106 if (r_symndx >= symtab_hdr->sh_info)
4108 struct elf_link_hash_entry **sym_hashes;
4110 sym_hashes = elf_sym_hashes (ibfd);
4111 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4112 while (h->root.type == bfd_link_hash_indirect
4113 || h->root.type == bfd_link_hash_warning)
4114 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4117 expecting_tls_get_addr = 0;
4123 r_type = ELF32_R_TYPE (rel->r_info);
4126 case R_PPC_GOT_TLSLD16:
4127 case R_PPC_GOT_TLSLD16_LO:
4128 expecting_tls_get_addr = 1;
4131 case R_PPC_GOT_TLSLD16_HI:
4132 case R_PPC_GOT_TLSLD16_HA:
4133 /* These relocs should never be against a symbol
4134 defined in a shared lib. Leave them alone if
4135 that turns out to be the case. */
4144 case R_PPC_GOT_TLSGD16:
4145 case R_PPC_GOT_TLSGD16_LO:
4146 expecting_tls_get_addr = 1;
4149 case R_PPC_GOT_TLSGD16_HI:
4150 case R_PPC_GOT_TLSGD16_HA:
4156 tls_set = TLS_TLS | TLS_TPRELGD;
4160 case R_PPC_GOT_TPREL16:
4161 case R_PPC_GOT_TPREL16_LO:
4162 case R_PPC_GOT_TPREL16_HI:
4163 case R_PPC_GOT_TPREL16_HA:
4168 tls_clear = TLS_TPREL;
4180 if (!expecting_tls_get_addr)
4183 if (rel + 1 < relend)
4185 enum elf_ppc_reloc_type r_type2;
4186 unsigned long r_symndx2;
4187 struct elf_link_hash_entry *h2;
4189 /* The next instruction should be a call to
4190 __tls_get_addr. Peek at the reloc to be sure. */
4191 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4192 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4193 if (r_symndx2 >= symtab_hdr->sh_info
4194 && (r_type2 == R_PPC_REL14
4195 || r_type2 == R_PPC_REL14_BRTAKEN
4196 || r_type2 == R_PPC_REL14_BRNTAKEN
4197 || r_type2 == R_PPC_REL24
4198 || r_type2 == R_PPC_PLTREL24))
4200 struct elf_link_hash_entry **sym_hashes;
4202 sym_hashes = elf_sym_hashes (ibfd);
4203 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4204 while (h2->root.type == bfd_link_hash_indirect
4205 || h2->root.type == bfd_link_hash_warning)
4206 h2 = ((struct elf_link_hash_entry *)
4208 if (h2 == htab->tls_get_addr)
4213 /* Uh oh, we didn't find the expected call. We
4214 could just mark this symbol to exclude it
4215 from tls optimization but it's safer to skip
4216 the entire section. */
4217 sec->has_tls_reloc = 0;
4223 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4224 got_count = &h->got.refcount;
4228 Elf_Internal_Sym *sym;
4229 bfd_signed_vma *lgot_refs;
4232 if (locsyms == NULL)
4234 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4235 if (locsyms == NULL)
4236 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4237 symtab_hdr->sh_info,
4238 0, NULL, NULL, NULL);
4239 if (locsyms == NULL)
4241 if (elf_section_data (sec)->relocs != relstart)
4246 sym = locsyms + r_symndx;
4247 lgot_refs = elf_local_got_refcounts (ibfd);
4248 if (lgot_refs == NULL)
4250 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4251 tls_mask = &lgot_masks[r_symndx];
4252 got_count = &lgot_refs[r_symndx];
4257 /* We managed to get rid of a got entry. */
4262 if (expecting_tls_get_addr)
4264 struct plt_entry *ent;
4266 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4267 if (ent != NULL && ent->plt.refcount > 0)
4268 ent->plt.refcount -= 1;
4271 *tls_mask |= tls_set;
4272 *tls_mask &= ~tls_clear;
4275 if (elf_section_data (sec)->relocs != relstart)
4280 && (symtab_hdr->contents != (unsigned char *) locsyms))
4282 if (!info->keep_memory)
4285 symtab_hdr->contents = (unsigned char *) locsyms;
4291 /* Adjust a symbol defined by a dynamic object and referenced by a
4292 regular object. The current definition is in some section of the
4293 dynamic object, but we're not including those sections. We have to
4294 change the definition to something the rest of the link can
4298 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4299 struct elf_link_hash_entry *h)
4301 struct ppc_elf_link_hash_table *htab;
4305 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4306 h->root.root.string);
4309 /* Make sure we know what is going on here. */
4310 htab = ppc_elf_hash_table (info);
4311 BFD_ASSERT (htab->elf.dynobj != NULL
4313 || h->u.weakdef != NULL
4316 && !h->def_regular)));
4318 /* Deal with function syms. */
4319 if (h->type == STT_FUNC
4322 /* Clear procedure linkage table information for any symbol that
4323 won't need a .plt entry. */
4324 struct plt_entry *ent;
4325 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4326 if (ent->plt.refcount > 0)
4329 || SYMBOL_CALLS_LOCAL (info, h)
4330 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4331 && h->root.type == bfd_link_hash_undefweak))
4333 /* A PLT entry is not required/allowed when:
4335 1. We are not using ld.so; because then the PLT entry
4336 can't be set up, so we can't use one. In this case,
4337 ppc_elf_adjust_dynamic_symbol won't even be called.
4339 2. GC has rendered the entry unused.
4341 3. We know for certain that a call to this symbol
4342 will go to this object, or will remain undefined. */
4343 h->plt.plist = NULL;
4349 h->plt.plist = NULL;
4351 /* If this is a weak symbol, and there is a real definition, the
4352 processor independent code will have arranged for us to see the
4353 real definition first, and we can just use the same value. */
4354 if (h->u.weakdef != NULL)
4356 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4357 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4358 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4359 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4360 if (ELIMINATE_COPY_RELOCS)
4361 h->non_got_ref = h->u.weakdef->non_got_ref;
4365 /* This is a reference to a symbol defined by a dynamic object which
4366 is not a function. */
4368 /* If we are creating a shared library, we must presume that the
4369 only references to the symbol are via the global offset table.
4370 For such cases we need not do anything here; the relocations will
4371 be handled correctly by relocate_section. */
4375 /* If there are no references to this symbol that do not use the
4376 GOT, we don't need to generate a copy reloc. */
4377 if (!h->non_got_ref)
4380 /* If we didn't find any dynamic relocs in read-only sections, then
4381 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4382 We can't do this if there are any small data relocations. This
4383 doesn't work on VxWorks, where we can not have dynamic
4384 relocations (other than copy and jump slot relocations) in an
4386 if (ELIMINATE_COPY_RELOCS
4387 && !ppc_elf_hash_entry (h)->has_sda_refs
4388 && !htab->is_vxworks)
4390 struct ppc_elf_dyn_relocs *p;
4391 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4393 s = p->sec->output_section;
4394 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4407 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4408 h->root.root.string);
4412 /* We must allocate the symbol in our .dynbss section, which will
4413 become part of the .bss section of the executable. There will be
4414 an entry for this symbol in the .dynsym section. The dynamic
4415 object will contain position independent code, so all references
4416 from the dynamic object to this symbol will go through the global
4417 offset table. The dynamic linker will use the .dynsym entry to
4418 determine the address it must put in the global offset table, so
4419 both the dynamic object and the regular object will refer to the
4420 same memory location for the variable.
4422 Of course, if the symbol is referenced using SDAREL relocs, we
4423 must instead allocate it in .sbss. */
4425 if (ppc_elf_hash_entry (h)->has_sda_refs)
4429 BFD_ASSERT (s != NULL);
4431 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4432 copy the initial value out of the dynamic object and into the
4433 runtime process image. We need to remember the offset into the
4434 .rela.bss section we are going to use. */
4435 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4439 if (ppc_elf_hash_entry (h)->has_sda_refs)
4440 srel = htab->relsbss;
4442 srel = htab->relbss;
4443 BFD_ASSERT (srel != NULL);
4444 srel->size += sizeof (Elf32_External_Rela);
4448 return _bfd_elf_adjust_dynamic_copy (h, s);
4451 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4452 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4453 specifying the addend on the plt relocation. For -fpic code, the sym
4454 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4455 xxxxxxxx.got2.plt_pic32.<callee>. */
4458 add_stub_sym (struct plt_entry *ent,
4459 struct elf_link_hash_entry *h,
4460 struct bfd_link_info *info)
4462 struct elf_link_hash_entry *sh;
4463 size_t len1, len2, len3;
4466 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4468 if (info->shared || info->pie)
4469 stub = ".plt_pic32.";
4471 stub = ".plt_call32.";
4473 len1 = strlen (h->root.root.string);
4474 len2 = strlen (stub);
4477 len3 = strlen (ent->sec->name);
4478 name = bfd_malloc (len1 + len2 + len3 + 9);
4481 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4483 memcpy (name + 8, ent->sec->name, len3);
4484 memcpy (name + 8 + len3, stub, len2);
4485 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4486 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4489 if (sh->root.type == bfd_link_hash_new)
4491 sh->root.type = bfd_link_hash_defined;
4492 sh->root.u.def.section = htab->glink;
4493 sh->root.u.def.value = ent->glink_offset;
4494 sh->ref_regular = 1;
4495 sh->def_regular = 1;
4496 sh->ref_regular_nonweak = 1;
4497 sh->forced_local = 1;
4503 /* Allocate NEED contiguous space in .got, and return the offset.
4504 Handles allocation of the got header when crossing 32k. */
4507 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4510 unsigned int max_before_header;
4512 if (htab->plt_type == PLT_VXWORKS)
4514 where = htab->got->size;
4515 htab->got->size += need;
4519 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4520 if (need <= htab->got_gap)
4522 where = max_before_header - htab->got_gap;
4523 htab->got_gap -= need;
4527 if (htab->got->size + need > max_before_header
4528 && htab->got->size <= max_before_header)
4530 htab->got_gap = max_before_header - htab->got->size;
4531 htab->got->size = max_before_header + htab->got_header_size;
4533 where = htab->got->size;
4534 htab->got->size += need;
4540 /* Allocate space in associated reloc sections for dynamic relocs. */
4543 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4545 struct bfd_link_info *info = inf;
4546 struct ppc_elf_link_hash_entry *eh;
4547 struct ppc_elf_link_hash_table *htab;
4548 struct ppc_elf_dyn_relocs *p;
4550 if (h->root.type == bfd_link_hash_indirect)
4553 if (h->root.type == bfd_link_hash_warning)
4554 /* When warning symbols are created, they **replace** the "real"
4555 entry in the hash table, thus we never get to see the real
4556 symbol in a hash traversal. So look at it now. */
4557 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4559 htab = ppc_elf_hash_table (info);
4560 if (htab->elf.dynamic_sections_created)
4562 struct plt_entry *ent;
4563 bfd_boolean doneone = FALSE;
4564 bfd_vma plt_offset = 0, glink_offset = 0;
4566 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4567 if (ent->plt.refcount > 0)
4569 /* Make sure this symbol is output as a dynamic symbol. */
4570 if (h->dynindx == -1
4571 && !h->forced_local)
4573 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4578 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4580 asection *s = htab->plt;
4582 if (htab->plt_type == PLT_NEW)
4586 plt_offset = s->size;
4589 ent->plt.offset = plt_offset;
4592 if (!doneone || info->shared || info->pie)
4594 glink_offset = s->size;
4595 s->size += GLINK_ENTRY_SIZE;
4601 h->root.u.def.section = s;
4602 h->root.u.def.value = glink_offset;
4604 ent->glink_offset = glink_offset;
4606 if (htab->emit_stub_syms
4607 && !add_stub_sym (ent, h, info))
4614 /* If this is the first .plt entry, make room
4615 for the special first entry. */
4617 s->size += htab->plt_initial_entry_size;
4619 /* The PowerPC PLT is actually composed of two
4620 parts, the first part is 2 words (for a load
4621 and a jump), and then there is a remaining
4622 word available at the end. */
4623 plt_offset = (htab->plt_initial_entry_size
4624 + (htab->plt_slot_size
4626 - htab->plt_initial_entry_size)
4627 / htab->plt_entry_size)));
4629 /* If this symbol is not defined in a regular
4630 file, and we are not generating a shared
4631 library, then set the symbol to this location
4632 in the .plt. This is required to make
4633 function pointers compare as equal between
4634 the normal executable and the shared library. */
4638 h->root.u.def.section = s;
4639 h->root.u.def.value = plt_offset;
4642 /* Make room for this entry. */
4643 s->size += htab->plt_entry_size;
4644 /* After the 8192nd entry, room for two entries
4646 if (htab->plt_type == PLT_OLD
4647 && (s->size - htab->plt_initial_entry_size)
4648 / htab->plt_entry_size
4649 > PLT_NUM_SINGLE_ENTRIES)
4650 s->size += htab->plt_entry_size;
4652 ent->plt.offset = plt_offset;
4655 /* We also need to make an entry in the .rela.plt section. */
4658 htab->relplt->size += sizeof (Elf32_External_Rela);
4660 if (htab->plt_type == PLT_VXWORKS)
4662 /* Allocate space for the unloaded relocations. */
4666 == (bfd_vma) htab->plt_initial_entry_size)
4668 htab->srelplt2->size
4669 += sizeof (Elf32_External_Rela)
4670 * VXWORKS_PLTRESOLVE_RELOCS;
4673 htab->srelplt2->size
4674 += sizeof (Elf32_External_Rela)
4675 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4678 /* Every PLT entry has an associated GOT entry in
4680 htab->sgotplt->size += 4;
4686 ent->plt.offset = (bfd_vma) -1;
4689 ent->plt.offset = (bfd_vma) -1;
4693 h->plt.plist = NULL;
4699 h->plt.plist = NULL;
4703 eh = (struct ppc_elf_link_hash_entry *) h;
4704 if (eh->elf.got.refcount > 0)
4706 /* Make sure this symbol is output as a dynamic symbol. */
4707 if (eh->elf.dynindx == -1
4708 && !eh->elf.forced_local)
4710 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4714 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4715 && !eh->elf.def_dynamic)
4717 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4718 htab->tlsld_got.refcount += 1;
4719 eh->elf.got.offset = (bfd_vma) -1;
4724 unsigned int need = 0;
4725 if ((eh->tls_mask & TLS_TLS) != 0)
4727 if ((eh->tls_mask & TLS_LD) != 0)
4729 if ((eh->tls_mask & TLS_GD) != 0)
4731 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4733 if ((eh->tls_mask & TLS_DTPREL) != 0)
4738 eh->elf.got.offset = allocate_got (htab, need);
4739 dyn = htab->elf.dynamic_sections_created;
4741 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4742 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4743 || eh->elf.root.type != bfd_link_hash_undefweak))
4745 /* All the entries we allocated need relocs.
4746 Except LD only needs one. */
4747 if ((eh->tls_mask & TLS_LD) != 0)
4749 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4754 eh->elf.got.offset = (bfd_vma) -1;
4756 if (eh->dyn_relocs == NULL)
4759 /* In the shared -Bsymbolic case, discard space allocated for
4760 dynamic pc-relative relocs against symbols which turn out to be
4761 defined in regular objects. For the normal shared case, discard
4762 space for relocs that have become local due to symbol visibility
4767 /* Relocs that use pc_count are those that appear on a call insn,
4768 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4769 generated via assembly. We want calls to protected symbols to
4770 resolve directly to the function rather than going via the plt.
4771 If people want function pointer comparisons to work as expected
4772 then they should avoid writing weird assembly. */
4773 if (SYMBOL_CALLS_LOCAL (info, h))
4775 struct ppc_elf_dyn_relocs **pp;
4777 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4779 p->count -= p->pc_count;
4788 /* Also discard relocs on undefined weak syms with non-default
4790 if (eh->dyn_relocs != NULL
4791 && h->root.type == bfd_link_hash_undefweak)
4793 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4794 eh->dyn_relocs = NULL;
4796 /* Make sure undefined weak symbols are output as a dynamic
4798 else if (h->dynindx == -1
4799 && !h->forced_local)
4801 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4806 else if (ELIMINATE_COPY_RELOCS)
4808 /* For the non-shared case, discard space for relocs against
4809 symbols which turn out to need copy relocs or are not
4816 /* Make sure this symbol is output as a dynamic symbol.
4817 Undefined weak syms won't yet be marked as dynamic. */
4818 if (h->dynindx == -1
4819 && !h->forced_local)
4821 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4825 /* If that succeeded, we know we'll be keeping all the
4827 if (h->dynindx != -1)
4831 eh->dyn_relocs = NULL;
4836 /* Finally, allocate space. */
4837 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4839 asection *sreloc = elf_section_data (p->sec)->sreloc;
4840 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4846 /* Find any dynamic relocs that apply to read-only sections. */
4849 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4851 struct ppc_elf_dyn_relocs *p;
4853 if (h->root.type == bfd_link_hash_indirect)
4856 if (h->root.type == bfd_link_hash_warning)
4857 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4859 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4861 asection *s = p->sec->output_section;
4864 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4865 == (SEC_READONLY | SEC_ALLOC)))
4867 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4869 /* Not an error, just cut short the traversal. */
4876 /* Set the sizes of the dynamic sections. */
4879 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4880 struct bfd_link_info *info)
4882 struct ppc_elf_link_hash_table *htab;
4888 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4891 htab = ppc_elf_hash_table (info);
4892 BFD_ASSERT (htab->elf.dynobj != NULL);
4894 if (elf_hash_table (info)->dynamic_sections_created)
4896 /* Set the contents of the .interp section to the interpreter. */
4897 if (info->executable)
4899 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4900 BFD_ASSERT (s != NULL);
4901 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4902 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4906 if (htab->plt_type == PLT_OLD)
4907 htab->got_header_size = 16;
4908 else if (htab->plt_type == PLT_NEW)
4909 htab->got_header_size = 12;
4911 /* Set up .got offsets for local syms, and space for local dynamic
4913 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4915 bfd_signed_vma *local_got;
4916 bfd_signed_vma *end_local_got;
4918 bfd_size_type locsymcount;
4919 Elf_Internal_Shdr *symtab_hdr;
4921 if (!is_ppc_elf_target (ibfd->xvec))
4924 for (s = ibfd->sections; s != NULL; s = s->next)
4926 struct ppc_elf_dyn_relocs *p;
4928 for (p = ((struct ppc_elf_dyn_relocs *)
4929 elf_section_data (s)->local_dynrel);
4933 if (!bfd_is_abs_section (p->sec)
4934 && bfd_is_abs_section (p->sec->output_section))
4936 /* Input section has been discarded, either because
4937 it is a copy of a linkonce section or due to
4938 linker script /DISCARD/, so we'll be discarding
4941 else if (p->count != 0)
4943 elf_section_data (p->sec)->sreloc->size
4944 += p->count * sizeof (Elf32_External_Rela);
4945 if ((p->sec->output_section->flags
4946 & (SEC_READONLY | SEC_ALLOC))
4947 == (SEC_READONLY | SEC_ALLOC))
4948 info->flags |= DF_TEXTREL;
4953 local_got = elf_local_got_refcounts (ibfd);
4957 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4958 locsymcount = symtab_hdr->sh_info;
4959 end_local_got = local_got + locsymcount;
4960 lgot_masks = (char *) end_local_got;
4961 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4964 if (*lgot_masks == (TLS_TLS | TLS_LD))
4966 /* If just an LD reloc, we'll just use
4967 htab->tlsld_got.offset. */
4968 htab->tlsld_got.refcount += 1;
4969 *local_got = (bfd_vma) -1;
4973 unsigned int need = 0;
4974 if ((*lgot_masks & TLS_TLS) != 0)
4976 if ((*lgot_masks & TLS_GD) != 0)
4978 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4980 if ((*lgot_masks & TLS_DTPREL) != 0)
4985 *local_got = allocate_got (htab, need);
4987 htab->relgot->size += (need
4988 * (sizeof (Elf32_External_Rela) / 4));
4992 *local_got = (bfd_vma) -1;
4995 /* Allocate space for global sym dynamic relocs. */
4996 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4998 if (htab->tlsld_got.refcount > 0)
5000 htab->tlsld_got.offset = allocate_got (htab, 8);
5002 htab->relgot->size += sizeof (Elf32_External_Rela);
5005 htab->tlsld_got.offset = (bfd_vma) -1;
5007 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5009 unsigned int g_o_t = 32768;
5011 /* If we haven't allocated the header, do so now. When we get here,
5012 for old plt/got the got size will be 0 to 32764 (not allocated),
5013 or 32780 to 65536 (header allocated). For new plt/got, the
5014 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5015 if (htab->got->size <= 32768)
5017 g_o_t = htab->got->size;
5018 if (htab->plt_type == PLT_OLD)
5020 htab->got->size += htab->got_header_size;
5023 htab->elf.hgot->root.u.def.value = g_o_t;
5026 if (htab->glink != NULL && htab->glink->size != 0)
5028 htab->glink_pltresolve = htab->glink->size;
5029 /* Space for the branch table. */
5030 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5031 /* Pad out to align the start of PLTresolve. */
5032 htab->glink->size += -htab->glink->size & 15;
5033 htab->glink->size += GLINK_PLTRESOLVE;
5035 if (htab->emit_stub_syms)
5037 struct elf_link_hash_entry *sh;
5038 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5039 TRUE, FALSE, FALSE);
5042 if (sh->root.type == bfd_link_hash_new)
5044 sh->root.type = bfd_link_hash_defined;
5045 sh->root.u.def.section = htab->glink;
5046 sh->root.u.def.value = htab->glink_pltresolve;
5047 sh->ref_regular = 1;
5048 sh->def_regular = 1;
5049 sh->ref_regular_nonweak = 1;
5050 sh->forced_local = 1;
5053 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5054 TRUE, FALSE, FALSE);
5057 if (sh->root.type == bfd_link_hash_new)
5059 sh->root.type = bfd_link_hash_defined;
5060 sh->root.u.def.section = htab->glink;
5061 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5062 sh->ref_regular = 1;
5063 sh->def_regular = 1;
5064 sh->ref_regular_nonweak = 1;
5065 sh->forced_local = 1;
5071 /* We've now determined the sizes of the various dynamic sections.
5072 Allocate memory for them. */
5074 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5076 bfd_boolean strip_section = TRUE;
5078 if ((s->flags & SEC_LINKER_CREATED) == 0)
5084 || s == htab->sgotplt
5086 || s == htab->dynbss
5087 || s == htab->dynsbss)
5089 /* We'd like to strip these sections if they aren't needed, but if
5090 we've exported dynamic symbols from them we must leave them.
5091 It's too late to tell BFD to get rid of the symbols. */
5092 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5093 strip_section = FALSE;
5094 /* Strip this section if we don't need it; see the
5097 else if (s == htab->sdata[0].section
5098 || s == htab->sdata[1].section)
5100 /* Strip these too. */
5102 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5106 /* Remember whether there are any relocation sections. */
5109 /* We use the reloc_count field as a counter if we need
5110 to copy relocs into the output file. */
5116 /* It's not one of our sections, so don't allocate space. */
5120 if (s->size == 0 && strip_section)
5122 /* If we don't need this section, strip it from the
5123 output file. This is mostly to handle .rela.bss and
5124 .rela.plt. We must create both sections in
5125 create_dynamic_sections, because they must be created
5126 before the linker maps input sections to output
5127 sections. The linker does that before
5128 adjust_dynamic_symbol is called, and it is that
5129 function which decides whether anything needs to go
5130 into these sections. */
5131 s->flags |= SEC_EXCLUDE;
5135 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5138 /* Allocate memory for the section contents. */
5139 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5140 if (s->contents == NULL)
5144 if (htab->elf.dynamic_sections_created)
5146 /* Add some entries to the .dynamic section. We fill in the
5147 values later, in ppc_elf_finish_dynamic_sections, but we
5148 must add the entries now so that we get the correct size for
5149 the .dynamic section. The DT_DEBUG entry is filled in by the
5150 dynamic linker and used by the debugger. */
5151 #define add_dynamic_entry(TAG, VAL) \
5152 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5154 if (info->executable)
5156 if (!add_dynamic_entry (DT_DEBUG, 0))
5160 if (htab->plt != NULL && htab->plt->size != 0)
5162 if (!add_dynamic_entry (DT_PLTGOT, 0)
5163 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5164 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5165 || !add_dynamic_entry (DT_JMPREL, 0))
5169 if (htab->glink != NULL && htab->glink->size != 0)
5171 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5177 if (!add_dynamic_entry (DT_RELA, 0)
5178 || !add_dynamic_entry (DT_RELASZ, 0)
5179 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5183 /* If any dynamic relocs apply to a read-only section, then we
5184 need a DT_TEXTREL entry. */
5185 if ((info->flags & DF_TEXTREL) == 0)
5186 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
5189 if ((info->flags & DF_TEXTREL) != 0)
5191 if (!add_dynamic_entry (DT_TEXTREL, 0))
5194 if (htab->is_vxworks
5195 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5198 #undef add_dynamic_entry
5203 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5205 static const int shared_stub_entry[] =
5207 0x7c0802a6, /* mflr 0 */
5208 0x429f0005, /* bcl 20, 31, .Lxxx */
5209 0x7d6802a6, /* mflr 11 */
5210 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5211 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5212 0x7c0803a6, /* mtlr 0 */
5213 0x7d6903a6, /* mtctr 11 */
5214 0x4e800420, /* bctr */
5217 static const int stub_entry[] =
5219 0x3d600000, /* lis 11,xxx@ha */
5220 0x396b0000, /* addi 11,11,xxx@l */
5221 0x7d6903a6, /* mtctr 11 */
5222 0x4e800420, /* bctr */
5226 ppc_elf_relax_section (bfd *abfd,
5228 struct bfd_link_info *link_info,
5233 struct one_fixup *next;
5239 Elf_Internal_Shdr *symtab_hdr;
5240 bfd_byte *contents = NULL;
5241 Elf_Internal_Sym *isymbuf = NULL;
5242 Elf_Internal_Rela *internal_relocs = NULL;
5243 Elf_Internal_Rela *irel, *irelend;
5244 struct one_fixup *fixups = NULL;
5245 bfd_boolean changed;
5246 struct ppc_elf_link_hash_table *htab;
5247 bfd_size_type trampoff;
5252 /* Nothing to do if there are no relocations, and no need to do
5253 anything with non-alloc sections. */
5254 if ((isec->flags & SEC_ALLOC) == 0
5255 || (isec->flags & SEC_RELOC) == 0
5256 || isec->reloc_count == 0)
5259 trampoff = (isec->size + 3) & (bfd_vma) -4;
5260 /* Space for a branch around any trampolines. */
5263 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5265 /* Get a copy of the native relocations. */
5266 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5267 link_info->keep_memory);
5268 if (internal_relocs == NULL)
5271 htab = ppc_elf_hash_table (link_info);
5272 got2 = bfd_get_section_by_name (abfd, ".got2");
5274 irelend = internal_relocs + isec->reloc_count;
5275 for (irel = internal_relocs; irel < irelend; irel++)
5277 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5278 bfd_vma symaddr, reladdr, toff, roff;
5280 struct one_fixup *f;
5281 size_t insn_offset = 0;
5282 bfd_vma max_branch_offset, val;
5285 unsigned char sym_type;
5290 case R_PPC_LOCAL24PC:
5291 case R_PPC_PLTREL24:
5292 max_branch_offset = 1 << 25;
5296 case R_PPC_REL14_BRTAKEN:
5297 case R_PPC_REL14_BRNTAKEN:
5298 max_branch_offset = 1 << 15;
5305 /* Get the value of the symbol referred to by the reloc. */
5306 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5308 /* A local symbol. */
5309 Elf_Internal_Sym *isym;
5311 /* Read this BFD's local symbols. */
5312 if (isymbuf == NULL)
5314 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5315 if (isymbuf == NULL)
5316 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5317 symtab_hdr->sh_info, 0,
5322 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5323 if (isym->st_shndx == SHN_UNDEF)
5324 continue; /* We can't do anything with undefined symbols. */
5325 else if (isym->st_shndx == SHN_ABS)
5326 tsec = bfd_abs_section_ptr;
5327 else if (isym->st_shndx == SHN_COMMON)
5328 tsec = bfd_com_section_ptr;
5330 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5332 toff = isym->st_value;
5333 sym_type = ELF_ST_TYPE (isym->st_info);
5337 /* Global symbol handling. */
5339 struct elf_link_hash_entry *h;
5341 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5342 h = elf_sym_hashes (abfd)[indx];
5344 while (h->root.type == bfd_link_hash_indirect
5345 || h->root.type == bfd_link_hash_warning)
5346 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5350 if (r_type == R_PPC_PLTREL24
5351 && htab->plt != NULL)
5353 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5357 if (htab->plt_type == PLT_NEW)
5360 toff = ent->glink_offset;
5365 toff = ent->plt.offset;
5371 else if (h->root.type == bfd_link_hash_defined
5372 || h->root.type == bfd_link_hash_defweak)
5374 tsec = h->root.u.def.section;
5375 toff = h->root.u.def.value;
5383 /* If the branch and target are in the same section, you have
5384 no hope of adding stubs. We'll error out later should the
5389 /* There probably isn't any reason to handle symbols in
5390 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5391 attribute for a code section, and we are only looking at
5392 branches. However, implement it correctly here as a
5393 reference for other target relax_section functions. */
5394 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5396 /* At this stage in linking, no SEC_MERGE symbol has been
5397 adjusted, so all references to such symbols need to be
5398 passed through _bfd_merged_section_offset. (Later, in
5399 relocate_section, all SEC_MERGE symbols *except* for
5400 section symbols have been adjusted.)
5402 gas may reduce relocations against symbols in SEC_MERGE
5403 sections to a relocation against the section symbol when
5404 the original addend was zero. When the reloc is against
5405 a section symbol we should include the addend in the
5406 offset passed to _bfd_merged_section_offset, since the
5407 location of interest is the original symbol. On the
5408 other hand, an access to "sym+addend" where "sym" is not
5409 a section symbol should not include the addend; Such an
5410 access is presumed to be an offset from "sym"; The
5411 location of interest is just "sym". */
5412 if (sym_type == STT_SECTION)
5413 toff += irel->r_addend;
5415 toff = _bfd_merged_section_offset (abfd, &tsec,
5416 elf_section_data (tsec)->sec_info,
5419 if (sym_type != STT_SECTION)
5420 toff += irel->r_addend;
5422 /* PLTREL24 addends are special. */
5423 else if (r_type != R_PPC_PLTREL24)
5424 toff += irel->r_addend;
5426 /* Attempted -shared link of non-pic code loses. */
5427 if (tsec->output_section == NULL)
5430 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5432 roff = irel->r_offset;
5433 reladdr = isec->output_section->vma + isec->output_offset + roff;
5435 /* If the branch is in range, no need to do anything. */
5436 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5439 /* Look for an existing fixup to this address. */
5440 for (f = fixups; f ; f = f->next)
5441 if (f->tsec == tsec && f->toff == toff)
5447 unsigned long stub_rtype;
5449 val = trampoff - roff;
5450 if (val >= max_branch_offset)
5451 /* Oh dear, we can't reach a trampoline. Don't try to add
5452 one. We'll report an error later. */
5455 if (link_info->shared)
5457 size = 4 * ARRAY_SIZE (shared_stub_entry);
5459 stub_rtype = R_PPC_RELAX32PC;
5463 size = 4 * ARRAY_SIZE (stub_entry);
5465 stub_rtype = R_PPC_RELAX32;
5468 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5469 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5471 if (tsec == htab->plt
5472 || tsec == htab->glink)
5473 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5475 /* Hijack the old relocation. Since we need two
5476 relocations for this use a "composite" reloc. */
5477 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5479 irel->r_offset = trampoff + insn_offset;
5481 /* Record the fixup so we don't do it again this section. */
5482 f = bfd_malloc (sizeof (*f));
5486 f->trampoff = trampoff;
5493 val = f->trampoff - roff;
5494 if (val >= max_branch_offset)
5497 /* Nop out the reloc, since we're finalizing things here. */
5498 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5501 /* Get the section contents. */
5502 if (contents == NULL)
5504 /* Get cached copy if it exists. */
5505 if (elf_section_data (isec)->this_hdr.contents != NULL)
5506 contents = elf_section_data (isec)->this_hdr.contents;
5509 /* Go get them off disk. */
5510 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5515 /* Fix up the existing branch to hit the trampoline. */
5516 hit_addr = contents + roff;
5520 case R_PPC_LOCAL24PC:
5521 case R_PPC_PLTREL24:
5522 t0 = bfd_get_32 (abfd, hit_addr);
5524 t0 |= val & 0x3fffffc;
5525 bfd_put_32 (abfd, t0, hit_addr);
5529 case R_PPC_REL14_BRTAKEN:
5530 case R_PPC_REL14_BRNTAKEN:
5531 t0 = bfd_get_32 (abfd, hit_addr);
5534 bfd_put_32 (abfd, t0, hit_addr);
5539 /* Write out the trampolines. */
5540 changed = fixups != NULL;
5550 struct one_fixup *f = fixups;
5551 fixups = fixups->next;
5556 contents = bfd_realloc (contents, trampoff);
5557 if (contents == NULL)
5560 isec->size = (isec->size + 3) & (bfd_vma) -4;
5561 /* Branch around the trampolines. */
5562 val = trampoff - isec->size + 0x48000000;
5563 dest = contents + isec->size;
5564 isec->size = trampoff;
5565 bfd_put_32 (abfd, val, dest);
5568 if (link_info->shared)
5570 stub = shared_stub_entry;
5571 size = ARRAY_SIZE (shared_stub_entry);
5576 size = ARRAY_SIZE (stub_entry);
5580 while (dest < contents + trampoff)
5582 bfd_put_32 (abfd, stub[i], dest);
5588 BFD_ASSERT (i == 0);
5592 && symtab_hdr->contents != (unsigned char *) isymbuf)
5594 if (! link_info->keep_memory)
5598 /* Cache the symbols for elf_link_input_bfd. */
5599 symtab_hdr->contents = (unsigned char *) isymbuf;
5603 if (contents != NULL
5604 && elf_section_data (isec)->this_hdr.contents != contents)
5606 if (!changed && !link_info->keep_memory)
5610 /* Cache the section contents for elf_link_input_bfd. */
5611 elf_section_data (isec)->this_hdr.contents = contents;
5615 if (elf_section_data (isec)->relocs != internal_relocs)
5618 free (internal_relocs);
5620 elf_section_data (isec)->relocs = internal_relocs;
5627 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5629 if (contents != NULL
5630 && elf_section_data (isec)->this_hdr.contents != contents)
5632 if (internal_relocs != NULL
5633 && elf_section_data (isec)->relocs != internal_relocs)
5634 free (internal_relocs);
5638 /* What to do when ld finds relocations against symbols defined in
5639 discarded sections. */
5642 ppc_elf_action_discarded (asection *sec)
5644 if (strcmp (".fixup", sec->name) == 0)
5647 if (strcmp (".got2", sec->name) == 0)
5650 return _bfd_elf_default_action_discarded (sec);
5653 /* Fill in the address for a pointer generated in a linker section. */
5656 elf_finish_pointer_linker_section (bfd *input_bfd,
5657 elf_linker_section_t *lsect,
5658 struct elf_link_hash_entry *h,
5660 const Elf_Internal_Rela *rel)
5662 elf_linker_section_pointers_t *linker_section_ptr;
5664 BFD_ASSERT (lsect != NULL);
5668 /* Handle global symbol. */
5669 struct ppc_elf_link_hash_entry *eh;
5671 eh = (struct ppc_elf_link_hash_entry *) h;
5672 BFD_ASSERT (eh->elf.def_regular);
5673 linker_section_ptr = eh->linker_section_pointer;
5677 /* Handle local symbol. */
5678 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5680 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5681 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5684 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5687 BFD_ASSERT (linker_section_ptr != NULL);
5689 /* Offset will always be a multiple of four, so use the bottom bit
5690 as a "written" flag. */
5691 if ((linker_section_ptr->offset & 1) == 0)
5693 bfd_put_32 (lsect->section->owner,
5694 relocation + linker_section_ptr->addend,
5695 lsect->section->contents + linker_section_ptr->offset);
5696 linker_section_ptr->offset += 1;
5699 relocation = (lsect->section->output_offset
5700 + linker_section_ptr->offset - 1
5705 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5706 lsect->name, (long) relocation, (long) relocation);
5709 /* Subtract out the addend, because it will get added back in by the normal
5711 return relocation - linker_section_ptr->addend;
5714 /* The RELOCATE_SECTION function is called by the ELF backend linker
5715 to handle the relocations for a section.
5717 The relocs are always passed as Rela structures; if the section
5718 actually uses Rel structures, the r_addend field will always be
5721 This function is responsible for adjust the section contents as
5722 necessary, and (if using Rela relocs and generating a
5723 relocatable output file) adjusting the reloc addend as
5726 This function does not have to worry about setting the reloc
5727 address or the reloc symbol index.
5729 LOCAL_SYMS is a pointer to the swapped in local symbols.
5731 LOCAL_SECTIONS is an array giving the section in the input file
5732 corresponding to the st_shndx field of each local symbol.
5734 The global hash table entry for the global symbols can be found
5735 via elf_sym_hashes (input_bfd).
5737 When generating relocatable output, this function must handle
5738 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5739 going to be the section symbol corresponding to the output
5740 section, which means that the addend must be adjusted
5744 ppc_elf_relocate_section (bfd *output_bfd,
5745 struct bfd_link_info *info,
5747 asection *input_section,
5749 Elf_Internal_Rela *relocs,
5750 Elf_Internal_Sym *local_syms,
5751 asection **local_sections)
5753 Elf_Internal_Shdr *symtab_hdr;
5754 struct elf_link_hash_entry **sym_hashes;
5755 struct ppc_elf_link_hash_table *htab;
5756 Elf_Internal_Rela *rel;
5757 Elf_Internal_Rela *relend;
5758 Elf_Internal_Rela outrel;
5760 asection *got2, *sreloc = NULL;
5761 bfd_vma *local_got_offsets;
5762 bfd_boolean ret = TRUE;
5763 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5766 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5767 "%ld relocations%s",
5768 input_bfd, input_section,
5769 (long) input_section->reloc_count,
5770 (info->relocatable) ? " (relocatable)" : "");
5773 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5775 /* Initialize howto table if not already done. */
5776 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5777 ppc_elf_howto_init ();
5779 htab = ppc_elf_hash_table (info);
5780 local_got_offsets = elf_local_got_offsets (input_bfd);
5781 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5782 sym_hashes = elf_sym_hashes (input_bfd);
5784 relend = relocs + input_section->reloc_count;
5785 for (; rel < relend; rel++)
5787 enum elf_ppc_reloc_type r_type;
5789 bfd_reloc_status_type r;
5790 Elf_Internal_Sym *sym;
5792 struct elf_link_hash_entry *h;
5793 const char *sym_name;
5794 reloc_howto_type *howto;
5795 unsigned long r_symndx;
5797 bfd_vma branch_bit, insn, from;
5798 bfd_boolean unresolved_reloc;
5800 unsigned int tls_type, tls_mask, tls_gd;
5802 r_type = ELF32_R_TYPE (rel->r_info);
5806 unresolved_reloc = FALSE;
5808 r_symndx = ELF32_R_SYM (rel->r_info);
5810 if (r_symndx < symtab_hdr->sh_info)
5812 sym = local_syms + r_symndx;
5813 sec = local_sections[r_symndx];
5814 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5816 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5820 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5821 r_symndx, symtab_hdr, sym_hashes,
5823 unresolved_reloc, warned);
5825 sym_name = h->root.root.string;
5828 if (sec != NULL && elf_discarded_section (sec))
5830 /* For relocs against symbols from removed linkonce sections,
5831 or sections discarded by a linker script, we just want the
5832 section contents zeroed. Avoid any special processing. */
5834 if (r_type < R_PPC_max)
5835 howto = ppc_elf_howto_table[r_type];
5836 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
5842 if (info->relocatable)
5845 && r_type == R_PPC_PLTREL24
5846 && rel->r_addend >= 32768)
5848 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5849 addend specifies the GOT pointer offset within .got2. */
5850 rel->r_addend += got2->output_offset;
5855 /* TLS optimizations. Replace instruction sequences and relocs
5856 based on information we collected in tls_optimize. We edit
5857 RELOCS so that --emit-relocs will output something sensible
5858 for the final instruction stream. */
5861 if (IS_PPC_TLS_RELOC (r_type))
5864 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5865 else if (local_got_offsets != NULL)
5868 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5869 tls_mask = lgot_masks[r_symndx];
5873 /* Ensure reloc mapping code below stays sane. */
5874 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5875 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5876 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5877 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5878 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5879 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5880 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5881 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5888 case R_PPC_GOT_TPREL16:
5889 case R_PPC_GOT_TPREL16_LO:
5891 && (tls_mask & TLS_TPREL) == 0)
5894 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
5896 insn |= 0x3c020000; /* addis 0,2,0 */
5897 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
5898 r_type = R_PPC_TPREL16_HA;
5899 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5905 && (tls_mask & TLS_TPREL) == 0)
5908 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5909 if ((insn & ((31 << 26) | (31 << 11)))
5910 == ((31 << 26) | (2 << 11)))
5911 rtra = insn & ((1 << 26) - (1 << 16));
5912 else if ((insn & ((31 << 26) | (31 << 16)))
5913 == ((31 << 26) | (2 << 16)))
5914 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5917 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5920 else if ((insn & (31 << 1)) == 23 << 1
5921 && ((insn & (31 << 6)) < 14 << 6
5922 || ((insn & (31 << 6)) >= 16 << 6
5923 && (insn & (31 << 6)) < 24 << 6)))
5924 /* load and store indexed -> dform. */
5925 insn = (32 | ((insn >> 6) & 31)) << 26;
5926 else if ((insn & (31 << 1)) == 21 << 1
5927 && (insn & (0x1a << 6)) == 0)
5928 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5929 insn = (((58 | ((insn >> 6) & 4)) << 26)
5930 | ((insn >> 6) & 1));
5931 else if ((insn & (31 << 1)) == 21 << 1
5932 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5934 insn = (58 << 26) | 2;
5938 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5939 r_type = R_PPC_TPREL16_LO;
5940 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5942 /* Was PPC_TLS which sits on insn boundary, now
5943 PPC_TPREL16_LO which is at low-order half-word. */
5944 rel->r_offset += d_offset;
5948 case R_PPC_GOT_TLSGD16_HI:
5949 case R_PPC_GOT_TLSGD16_HA:
5950 tls_gd = TLS_TPRELGD;
5951 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5955 case R_PPC_GOT_TLSLD16_HI:
5956 case R_PPC_GOT_TLSLD16_HA:
5957 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5960 if ((tls_mask & tls_gd) != 0)
5961 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5962 + R_PPC_GOT_TPREL16);
5965 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5966 rel->r_offset -= d_offset;
5967 r_type = R_PPC_NONE;
5969 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5973 case R_PPC_GOT_TLSGD16:
5974 case R_PPC_GOT_TLSGD16_LO:
5975 tls_gd = TLS_TPRELGD;
5976 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5980 case R_PPC_GOT_TLSLD16:
5981 case R_PPC_GOT_TLSLD16_LO:
5982 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5984 bfd_vma insn1, insn2;
5988 offset = rel[1].r_offset;
5989 insn1 = bfd_get_32 (output_bfd,
5990 contents + rel->r_offset - d_offset);
5991 if ((tls_mask & tls_gd) != 0)
5994 insn1 &= (1 << 26) - 1;
5995 insn1 |= 32 << 26; /* lwz */
5996 insn2 = 0x7c631214; /* add 3,3,2 */
5998 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
5999 rel[1].r_addend = 0;
6000 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6001 + R_PPC_GOT_TPREL16);
6002 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6007 insn1 = 0x3c620000; /* addis 3,2,0 */
6008 insn2 = 0x38630000; /* addi 3,3,0 */
6011 /* Was an LD reloc. */
6013 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6015 r_type = R_PPC_TPREL16_HA;
6016 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6017 rel[1].r_info = ELF32_R_INFO (r_symndx,
6019 rel[1].r_offset += d_offset;
6020 rel[1].r_addend = rel->r_addend;
6022 bfd_put_32 (output_bfd, insn1,
6023 contents + rel->r_offset - d_offset);
6024 bfd_put_32 (output_bfd, insn2, contents + offset);
6027 /* We changed the symbol on an LD reloc. Start over
6028 in order to get h, sym, sec etc. right. */
6036 /* Handle other relocations that tweak non-addend part of insn. */
6043 /* Branch taken prediction relocations. */
6044 case R_PPC_ADDR14_BRTAKEN:
6045 case R_PPC_REL14_BRTAKEN:
6046 branch_bit = BRANCH_PREDICT_BIT;
6049 /* Branch not taken prediction relocations. */
6050 case R_PPC_ADDR14_BRNTAKEN:
6051 case R_PPC_REL14_BRNTAKEN:
6052 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6053 insn &= ~BRANCH_PREDICT_BIT;
6056 from = (rel->r_offset
6057 + input_section->output_offset
6058 + input_section->output_section->vma);
6060 /* Invert 'y' bit if not the default. */
6061 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6062 insn ^= BRANCH_PREDICT_BIT;
6064 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6068 addend = rel->r_addend;
6071 if (r_type < R_PPC_max)
6072 howto = ppc_elf_howto_table[r_type];
6076 (*_bfd_error_handler)
6077 (_("%B: unknown relocation type %d for symbol %s"),
6078 input_bfd, (int) r_type, sym_name);
6080 bfd_set_error (bfd_error_bad_value);
6086 case R_PPC_EMB_MRKREF:
6087 case R_PPC_GNU_VTINHERIT:
6088 case R_PPC_GNU_VTENTRY:
6091 /* GOT16 relocations. Like an ADDR16 using the symbol's
6092 address in the GOT as relocation value instead of the
6093 symbol's value itself. Also, create a GOT entry for the
6094 symbol and put the symbol value there. */
6095 case R_PPC_GOT_TLSGD16:
6096 case R_PPC_GOT_TLSGD16_LO:
6097 case R_PPC_GOT_TLSGD16_HI:
6098 case R_PPC_GOT_TLSGD16_HA:
6099 tls_type = TLS_TLS | TLS_GD;
6102 case R_PPC_GOT_TLSLD16:
6103 case R_PPC_GOT_TLSLD16_LO:
6104 case R_PPC_GOT_TLSLD16_HI:
6105 case R_PPC_GOT_TLSLD16_HA:
6106 tls_type = TLS_TLS | TLS_LD;
6109 case R_PPC_GOT_TPREL16:
6110 case R_PPC_GOT_TPREL16_LO:
6111 case R_PPC_GOT_TPREL16_HI:
6112 case R_PPC_GOT_TPREL16_HA:
6113 tls_type = TLS_TLS | TLS_TPREL;
6116 case R_PPC_GOT_DTPREL16:
6117 case R_PPC_GOT_DTPREL16_LO:
6118 case R_PPC_GOT_DTPREL16_HI:
6119 case R_PPC_GOT_DTPREL16_HA:
6120 tls_type = TLS_TLS | TLS_DTPREL;
6124 case R_PPC_GOT16_LO:
6125 case R_PPC_GOT16_HI:
6126 case R_PPC_GOT16_HA:
6129 /* Relocation is to the entry for this symbol in the global
6135 if (htab->got == NULL)
6139 if (tls_type == (TLS_TLS | TLS_LD)
6141 || !h->def_dynamic))
6142 offp = &htab->tlsld_got.offset;
6146 dyn = htab->elf.dynamic_sections_created;
6147 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6149 && SYMBOL_REFERENCES_LOCAL (info, h)))
6150 /* This is actually a static link, or it is a
6151 -Bsymbolic link and the symbol is defined
6152 locally, or the symbol was forced to be local
6153 because of a version file. */
6158 unresolved_reloc = FALSE;
6160 offp = &h->got.offset;
6164 if (local_got_offsets == NULL)
6166 offp = &local_got_offsets[r_symndx];
6169 /* The offset must always be a multiple of 4. We use the
6170 least significant bit to record whether we have already
6171 processed this entry. */
6177 unsigned int tls_m = (tls_mask
6178 & (TLS_LD | TLS_GD | TLS_DTPREL
6179 | TLS_TPREL | TLS_TPRELGD));
6181 if (offp == &htab->tlsld_got.offset)
6187 /* We might have multiple got entries for this sym.
6188 Initialize them all. */
6193 if ((tls_m & TLS_LD) != 0)
6195 tls_ty = TLS_TLS | TLS_LD;
6198 else if ((tls_m & TLS_GD) != 0)
6200 tls_ty = TLS_TLS | TLS_GD;
6203 else if ((tls_m & TLS_DTPREL) != 0)
6205 tls_ty = TLS_TLS | TLS_DTPREL;
6206 tls_m &= ~TLS_DTPREL;
6208 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6210 tls_ty = TLS_TLS | TLS_TPREL;
6214 /* Generate relocs for the dynamic linker. */
6215 if ((info->shared || indx != 0)
6217 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6218 || h->root.type != bfd_link_hash_undefweak))
6220 outrel.r_offset = (htab->got->output_section->vma
6221 + htab->got->output_offset
6223 outrel.r_addend = 0;
6224 if (tls_ty & (TLS_LD | TLS_GD))
6226 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6227 if (tls_ty == (TLS_TLS | TLS_GD))
6229 loc = htab->relgot->contents;
6230 loc += (htab->relgot->reloc_count++
6231 * sizeof (Elf32_External_Rela));
6232 bfd_elf32_swap_reloca_out (output_bfd,
6234 outrel.r_offset += 4;
6236 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6239 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6240 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6241 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6242 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6244 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6246 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6249 outrel.r_addend += relocation;
6250 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6251 outrel.r_addend -= htab->elf.tls_sec->vma;
6253 loc = htab->relgot->contents;
6254 loc += (htab->relgot->reloc_count++
6255 * sizeof (Elf32_External_Rela));
6256 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6259 /* Init the .got section contents if we're not
6260 emitting a reloc. */
6263 bfd_vma value = relocation;
6265 if (tls_ty == (TLS_TLS | TLS_LD))
6267 else if (tls_ty != 0)
6269 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6270 if (tls_ty == (TLS_TLS | TLS_TPREL))
6271 value += DTP_OFFSET - TP_OFFSET;
6273 if (tls_ty == (TLS_TLS | TLS_GD))
6275 bfd_put_32 (output_bfd, value,
6276 htab->got->contents + off + 4);
6280 bfd_put_32 (output_bfd, value,
6281 htab->got->contents + off);
6285 if (tls_ty & (TLS_LD | TLS_GD))
6294 if (off >= (bfd_vma) -2)
6297 if ((tls_type & TLS_TLS) != 0)
6299 if (tls_type != (TLS_TLS | TLS_LD))
6301 if ((tls_mask & TLS_LD) != 0
6303 || !h->def_dynamic))
6305 if (tls_type != (TLS_TLS | TLS_GD))
6307 if ((tls_mask & TLS_GD) != 0)
6309 if (tls_type != (TLS_TLS | TLS_DTPREL))
6311 if ((tls_mask & TLS_DTPREL) != 0)
6318 relocation = htab->got->output_offset + off;
6319 relocation -= htab->elf.hgot->root.u.def.value;
6321 /* Addends on got relocations don't make much sense.
6322 x+off@got is actually x@got+off, and since the got is
6323 generated by a hash table traversal, the value in the
6324 got at entry m+n bears little relation to the entry m. */
6326 (*_bfd_error_handler)
6327 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6330 (long) rel->r_offset,
6336 /* Relocations that need no special processing. */
6337 case R_PPC_LOCAL24PC:
6338 /* It makes no sense to point a local relocation
6339 at a symbol not in this object. */
6340 if (unresolved_reloc)
6342 if (! (*info->callbacks->undefined_symbol) (info,
6343 h->root.root.string,
6353 case R_PPC_DTPREL16:
6354 case R_PPC_DTPREL16_LO:
6355 case R_PPC_DTPREL16_HI:
6356 case R_PPC_DTPREL16_HA:
6357 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6360 /* Relocations that may need to be propagated if this is a shared
6363 case R_PPC_TPREL16_LO:
6364 case R_PPC_TPREL16_HI:
6365 case R_PPC_TPREL16_HA:
6366 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6367 /* The TPREL16 relocs shouldn't really be used in shared
6368 libs as they will result in DT_TEXTREL being set, but
6369 support them anyway. */
6373 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6376 case R_PPC_DTPREL32:
6377 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6380 case R_PPC_DTPMOD32:
6386 case R_PPC_REL16_LO:
6387 case R_PPC_REL16_HI:
6388 case R_PPC_REL16_HA:
6394 case R_PPC_REL14_BRTAKEN:
6395 case R_PPC_REL14_BRNTAKEN:
6396 /* If these relocations are not to a named symbol, they can be
6397 handled right here, no need to bother the dynamic linker. */
6398 if (SYMBOL_REFERENCES_LOCAL (info, h)
6399 || h == htab->elf.hgot)
6403 /* Relocations that always need to be propagated if this is a shared
6408 case R_PPC_ADDR16_LO:
6409 case R_PPC_ADDR16_HI:
6410 case R_PPC_ADDR16_HA:
6412 case R_PPC_ADDR14_BRTAKEN:
6413 case R_PPC_ADDR14_BRNTAKEN:
6417 if ((input_section->flags & SEC_ALLOC) == 0)
6423 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6424 || h->root.type != bfd_link_hash_undefweak)
6425 && (MUST_BE_DYN_RELOC (r_type)
6426 || !SYMBOL_CALLS_LOCAL (info, h)))
6427 || (ELIMINATE_COPY_RELOCS
6433 && !h->def_regular))
6438 fprintf (stderr, "ppc_elf_relocate_section needs to "
6439 "create relocation for %s\n",
6440 (h && h->root.root.string
6441 ? h->root.root.string : "<unknown>"));
6444 /* When generating a shared object, these relocations
6445 are copied into the output file to be resolved at run
6451 name = (bfd_elf_string_from_elf_section
6453 elf_elfheader (input_bfd)->e_shstrndx,
6454 elf_section_data (input_section)->rel_hdr.sh_name));
6458 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
6459 && strcmp (bfd_get_section_name (input_bfd,
6463 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6464 BFD_ASSERT (sreloc != NULL);
6470 _bfd_elf_section_offset (output_bfd, info, input_section,
6472 if (outrel.r_offset == (bfd_vma) -1
6473 || outrel.r_offset == (bfd_vma) -2)
6474 skip = (int) outrel.r_offset;
6475 outrel.r_offset += (input_section->output_section->vma
6476 + input_section->output_offset);
6479 memset (&outrel, 0, sizeof outrel);
6480 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6482 unresolved_reloc = FALSE;
6483 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6484 outrel.r_addend = rel->r_addend;
6488 outrel.r_addend = relocation + rel->r_addend;
6490 if (r_type == R_PPC_ADDR32)
6491 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6496 if (bfd_is_abs_section (sec))
6498 else if (sec == NULL || sec->owner == NULL)
6500 bfd_set_error (bfd_error_bad_value);
6507 /* We are turning this relocation into one
6508 against a section symbol. It would be
6509 proper to subtract the symbol's value,
6510 osec->vma, from the emitted reloc addend,
6511 but ld.so expects buggy relocs. */
6512 osec = sec->output_section;
6513 indx = elf_section_data (osec)->dynindx;
6516 osec = htab->elf.text_index_section;
6517 indx = elf_section_data (osec)->dynindx;
6519 BFD_ASSERT (indx != 0);
6522 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6523 indx, osec->name, osec->flags,
6524 h->root.root.string);
6528 outrel.r_info = ELF32_R_INFO (indx, r_type);
6532 loc = sreloc->contents;
6533 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6534 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6539 /* This reloc will be computed at runtime. We clear the memory
6540 so that it contains predictable value. */
6542 && ((input_section->flags & SEC_ALLOC) != 0
6543 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6545 relocation = howto->pc_relative ? outrel.r_offset : 0;
6552 case R_PPC_RELAX32PC_PLT:
6553 case R_PPC_RELAX32_PLT:
6555 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6557 if (htab->plt_type == PLT_NEW)
6558 relocation = (htab->glink->output_section->vma
6559 + htab->glink->output_offset
6560 + ent->glink_offset);
6562 relocation = (htab->plt->output_section->vma
6563 + htab->plt->output_offset
6567 if (r_type == R_PPC_RELAX32_PLT)
6571 case R_PPC_RELAX32PC:
6572 relocation -= (input_section->output_section->vma
6573 + input_section->output_offset
6574 + rel->r_offset - 4);
6583 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6584 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6586 /* We're clearing the bits for R_PPC_ADDR16_HA
6587 and R_PPC_ADDR16_LO here. */
6591 /* t0 is HA, t1 is LO */
6592 relocation += addend;
6593 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6594 t1 |= relocation & 0xffff;
6596 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6597 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6601 /* Indirect .sdata relocation. */
6602 case R_PPC_EMB_SDAI16:
6603 BFD_ASSERT (htab->sdata[0].section != NULL);
6605 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6606 h, relocation, rel);
6609 /* Indirect .sdata2 relocation. */
6610 case R_PPC_EMB_SDA2I16:
6611 BFD_ASSERT (htab->sdata[1].section != NULL);
6613 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6614 h, relocation, rel);
6617 /* Handle the TOC16 reloc. We want to use the offset within the .got
6618 section, not the actual VMA. This is appropriate when generating
6619 an embedded ELF object, for which the .got section acts like the
6620 AIX .toc section. */
6621 case R_PPC_TOC16: /* phony GOT16 relocations */
6622 BFD_ASSERT (sec != NULL);
6623 BFD_ASSERT (bfd_is_und_section (sec)
6624 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6625 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6627 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6630 case R_PPC_PLTREL24:
6631 /* Relocation is to the entry for this symbol in the
6632 procedure linkage table. */
6634 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6638 || htab->plt == NULL)
6640 /* We didn't make a PLT entry for this symbol. This
6641 happens when statically linking PIC code, or when
6642 using -Bsymbolic. */
6646 unresolved_reloc = FALSE;
6647 if (htab->plt_type == PLT_NEW)
6648 relocation = (htab->glink->output_section->vma
6649 + htab->glink->output_offset
6650 + ent->glink_offset);
6652 relocation = (htab->plt->output_section->vma
6653 + htab->plt->output_offset
6658 /* Relocate against _SDA_BASE_. */
6659 case R_PPC_SDAREL16:
6662 struct elf_link_hash_entry *sh;
6664 BFD_ASSERT (sec != NULL);
6665 name = bfd_get_section_name (abfd, sec->output_section);
6666 if (! ((CONST_STRNEQ (name, ".sdata")
6667 && (name[6] == 0 || name[6] == '.'))
6668 || (CONST_STRNEQ (name, ".sbss")
6669 && (name[5] == 0 || name[5] == '.'))))
6671 (*_bfd_error_handler)
6672 (_("%B: the target (%s) of a %s relocation is "
6673 "in the wrong output section (%s)"),
6679 sh = htab->sdata[0].sym;
6680 addend -= (sh->root.u.def.value
6681 + sh->root.u.def.section->output_offset
6682 + sh->root.u.def.section->output_section->vma);
6686 /* Relocate against _SDA2_BASE_. */
6687 case R_PPC_EMB_SDA2REL:
6690 struct elf_link_hash_entry *sh;
6692 BFD_ASSERT (sec != NULL);
6693 name = bfd_get_section_name (abfd, sec->output_section);
6694 if (! (CONST_STRNEQ (name, ".sdata2")
6695 || CONST_STRNEQ (name, ".sbss2")))
6697 (*_bfd_error_handler)
6698 (_("%B: the target (%s) of a %s relocation is "
6699 "in the wrong output section (%s)"),
6705 bfd_set_error (bfd_error_bad_value);
6709 sh = htab->sdata[1].sym;
6710 addend -= (sh->root.u.def.value
6711 + sh->root.u.def.section->output_offset
6712 + sh->root.u.def.section->output_section->vma);
6716 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6717 case R_PPC_EMB_SDA21:
6718 case R_PPC_EMB_RELSDA:
6722 struct elf_link_hash_entry *sh;
6724 BFD_ASSERT (sec != NULL);
6725 name = bfd_get_section_name (abfd, sec->output_section);
6726 if (((CONST_STRNEQ (name, ".sdata")
6727 && (name[6] == 0 || name[6] == '.'))
6728 || (CONST_STRNEQ (name, ".sbss")
6729 && (name[5] == 0 || name[5] == '.'))))
6732 sh = htab->sdata[0].sym;
6733 addend -= (sh->root.u.def.value
6734 + sh->root.u.def.section->output_offset
6735 + sh->root.u.def.section->output_section->vma);
6738 else if (CONST_STRNEQ (name, ".sdata2")
6739 || CONST_STRNEQ (name, ".sbss2"))
6742 sh = htab->sdata[1].sym;
6743 addend -= (sh->root.u.def.value
6744 + sh->root.u.def.section->output_offset
6745 + sh->root.u.def.section->output_section->vma);
6748 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6749 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6756 (*_bfd_error_handler)
6757 (_("%B: the target (%s) of a %s relocation is "
6758 "in the wrong output section (%s)"),
6764 bfd_set_error (bfd_error_bad_value);
6769 if (r_type == R_PPC_EMB_SDA21)
6770 { /* fill in register field */
6771 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6772 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6773 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6778 /* Relocate against the beginning of the section. */
6780 case R_PPC_SECTOFF_LO:
6781 case R_PPC_SECTOFF_HI:
6782 case R_PPC_SECTOFF_HA:
6783 BFD_ASSERT (sec != NULL);
6784 addend -= sec->output_section->vma;
6787 /* Negative relocations. */
6788 case R_PPC_EMB_NADDR32:
6789 case R_PPC_EMB_NADDR16:
6790 case R_PPC_EMB_NADDR16_LO:
6791 case R_PPC_EMB_NADDR16_HI:
6792 case R_PPC_EMB_NADDR16_HA:
6793 addend -= 2 * relocation;
6797 case R_PPC_GLOB_DAT:
6798 case R_PPC_JMP_SLOT:
6799 case R_PPC_RELATIVE:
6801 case R_PPC_PLTREL32:
6802 case R_PPC_PLT16_LO:
6803 case R_PPC_PLT16_HI:
6804 case R_PPC_PLT16_HA:
6806 case R_PPC_EMB_RELSEC16:
6807 case R_PPC_EMB_RELST_LO:
6808 case R_PPC_EMB_RELST_HI:
6809 case R_PPC_EMB_RELST_HA:
6810 case R_PPC_EMB_BIT_FLD:
6811 (*_bfd_error_handler)
6812 (_("%B: relocation %s is not yet supported for symbol %s."),
6817 bfd_set_error (bfd_error_invalid_operation);
6822 /* Do any further special processing. */
6828 case R_PPC_ADDR16_HA:
6829 case R_PPC_REL16_HA:
6830 case R_PPC_SECTOFF_HA:
6831 case R_PPC_TPREL16_HA:
6832 case R_PPC_DTPREL16_HA:
6833 case R_PPC_EMB_NADDR16_HA:
6834 case R_PPC_EMB_RELST_HA:
6835 /* It's just possible that this symbol is a weak symbol
6836 that's not actually defined anywhere. In that case,
6837 'sec' would be NULL, and we should leave the symbol
6838 alone (it will be set to zero elsewhere in the link). */
6843 case R_PPC_PLT16_HA:
6844 case R_PPC_GOT16_HA:
6845 case R_PPC_GOT_TLSGD16_HA:
6846 case R_PPC_GOT_TLSLD16_HA:
6847 case R_PPC_GOT_TPREL16_HA:
6848 case R_PPC_GOT_DTPREL16_HA:
6849 /* Add 0x10000 if sign bit in 0:15 is set.
6850 Bits 0:15 are not used. */
6856 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6857 "offset = %ld, addend = %ld\n",
6862 (long) rel->r_offset,
6866 if (unresolved_reloc
6867 && !((input_section->flags & SEC_DEBUGGING) != 0
6870 (*_bfd_error_handler)
6871 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6874 (long) rel->r_offset,
6880 r = _bfd_final_link_relocate (howto,
6888 if (r != bfd_reloc_ok)
6890 if (r == bfd_reloc_overflow)
6895 && h->root.type == bfd_link_hash_undefweak
6896 && howto->pc_relative)
6898 /* Assume this is a call protected by other code that
6899 detect the symbol is undefined. If this is the case,
6900 we can safely ignore the overflow. If not, the
6901 program is hosed anyway, and a little warning isn't
6907 if (! (*info->callbacks->reloc_overflow) (info,
6908 (h ? &h->root : NULL),
6919 (*_bfd_error_handler)
6920 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6921 input_bfd, input_section,
6922 (long) rel->r_offset, howto->name, sym_name, (int) r);
6929 fprintf (stderr, "\n");
6935 #define PPC_LO(v) ((v) & 0xffff)
6936 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6937 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6939 /* Finish up dynamic symbol handling. We set the contents of various
6940 dynamic sections here. */
6943 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6944 struct bfd_link_info *info,
6945 struct elf_link_hash_entry *h,
6946 Elf_Internal_Sym *sym)
6948 struct ppc_elf_link_hash_table *htab;
6949 struct plt_entry *ent;
6950 bfd_boolean doneone;
6953 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6954 h->root.root.string);
6957 htab = ppc_elf_hash_table (info);
6958 BFD_ASSERT (htab->elf.dynobj != NULL);
6961 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6962 if (ent->plt.offset != (bfd_vma) -1)
6966 Elf_Internal_Rela rela;
6968 bfd_vma reloc_index;
6970 if (htab->plt_type == PLT_NEW)
6971 reloc_index = ent->plt.offset / 4;
6974 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6975 / htab->plt_slot_size);
6976 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6977 && htab->plt_type == PLT_OLD)
6978 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6981 /* This symbol has an entry in the procedure linkage table.
6983 if (htab->plt_type == PLT_VXWORKS)
6986 const bfd_vma *plt_entry;
6988 /* The first three entries in .got.plt are reserved. */
6989 got_offset = (reloc_index + 3) * 4;
6991 /* Use the right PLT. */
6992 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6993 : ppc_elf_vxworks_plt_entry;
6995 /* Fill in the .plt on VxWorks. */
6998 bfd_vma got_offset_hi = (got_offset >> 16)
6999 + ((got_offset & 0x8000) >> 15);
7001 bfd_put_32 (output_bfd,
7002 plt_entry[0] | (got_offset_hi & 0xffff),
7003 htab->plt->contents + ent->plt.offset + 0);
7004 bfd_put_32 (output_bfd,
7005 plt_entry[1] | (got_offset & 0xffff),
7006 htab->plt->contents + ent->plt.offset + 4);
7012 + htab->elf.hgot->root.u.def.value
7013 + htab->elf.hgot->root.u.def.section->output_offset
7014 + htab->elf.hgot->root.u.def.section->output_section->vma);
7015 bfd_vma got_loc_hi = (got_loc >> 16)
7016 + ((got_loc & 0x8000) >> 15);
7018 bfd_put_32 (output_bfd,
7019 plt_entry[0] | (got_loc_hi & 0xffff),
7020 htab->plt->contents + ent->plt.offset + 0);
7021 bfd_put_32 (output_bfd,
7022 plt_entry[1] | (got_loc & 0xffff),
7023 htab->plt->contents + ent->plt.offset + 4);
7026 bfd_put_32 (output_bfd, plt_entry[2],
7027 htab->plt->contents + ent->plt.offset + 8);
7028 bfd_put_32 (output_bfd, plt_entry[3],
7029 htab->plt->contents + ent->plt.offset + 12);
7031 /* This instruction is an immediate load. The value loaded is
7032 the byte offset of the R_PPC_JMP_SLOT relocation from the
7033 start of the .rela.plt section. The value is stored in the
7034 low-order 16 bits of the load instruction. */
7035 /* NOTE: It appears that this is now an index rather than a
7036 prescaled offset. */
7037 bfd_put_32 (output_bfd,
7038 plt_entry[4] | reloc_index,
7039 htab->plt->contents + ent->plt.offset + 16);
7040 /* This instruction is a PC-relative branch whose target is
7041 the start of the PLT section. The address of this branch
7042 instruction is 20 bytes beyond the start of this PLT entry.
7043 The address is encoded in bits 6-29, inclusive. The value
7044 stored is right-shifted by two bits, permitting a 26-bit
7046 bfd_put_32 (output_bfd,
7048 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7049 htab->plt->contents + ent->plt.offset + 20);
7050 bfd_put_32 (output_bfd, plt_entry[6],
7051 htab->plt->contents + ent->plt.offset + 24);
7052 bfd_put_32 (output_bfd, plt_entry[7],
7053 htab->plt->contents + ent->plt.offset + 28);
7055 /* Fill in the GOT entry corresponding to this PLT slot with
7056 the address immediately after the the "bctr" instruction
7057 in this PLT entry. */
7058 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7059 + htab->plt->output_offset
7060 + ent->plt.offset + 16),
7061 htab->sgotplt->contents + got_offset);
7065 /* Fill in a couple of entries in .rela.plt.unloaded. */
7066 loc = htab->srelplt2->contents
7067 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7068 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7069 * sizeof (Elf32_External_Rela));
7071 /* Provide the @ha relocation for the first instruction. */
7072 rela.r_offset = (htab->plt->output_section->vma
7073 + htab->plt->output_offset
7074 + ent->plt.offset + 2);
7075 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7077 rela.r_addend = got_offset;
7078 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7079 loc += sizeof (Elf32_External_Rela);
7081 /* Provide the @l relocation for the second instruction. */
7082 rela.r_offset = (htab->plt->output_section->vma
7083 + htab->plt->output_offset
7084 + ent->plt.offset + 6);
7085 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7087 rela.r_addend = got_offset;
7088 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7089 loc += sizeof (Elf32_External_Rela);
7091 /* Provide a relocation for the GOT entry corresponding to this
7092 PLT slot. Point it at the middle of the .plt entry. */
7093 rela.r_offset = (htab->sgotplt->output_section->vma
7094 + htab->sgotplt->output_offset
7096 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
7098 rela.r_addend = ent->plt.offset + 16;
7099 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7102 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7103 In particular, the offset for the relocation is not the
7104 address of the PLT entry for this function, as specified
7105 by the ABI. Instead, the offset is set to the address of
7106 the GOT slot for this function. See EABI 4.4.4.1. */
7107 rela.r_offset = (htab->sgotplt->output_section->vma
7108 + htab->sgotplt->output_offset
7114 rela.r_offset = (htab->plt->output_section->vma
7115 + htab->plt->output_offset
7117 if (htab->plt_type == PLT_OLD)
7119 /* We don't need to fill in the .plt. The ppc dynamic
7120 linker will fill it in. */
7124 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7125 + htab->glink->output_section->vma
7126 + htab->glink->output_offset);
7127 bfd_put_32 (output_bfd, val,
7128 htab->plt->contents + ent->plt.offset);
7132 /* Fill in the entry in the .rela.plt section. */
7133 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7136 loc = (htab->relplt->contents
7137 + reloc_index * sizeof (Elf32_External_Rela));
7138 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7140 if (!h->def_regular)
7142 /* Mark the symbol as undefined, rather than as defined in
7143 the .plt section. Leave the value alone. */
7144 sym->st_shndx = SHN_UNDEF;
7145 /* If the symbol is weak, we do need to clear the value.
7146 Otherwise, the PLT entry would provide a definition for
7147 the symbol even if the symbol wasn't defined anywhere,
7148 and so the symbol would never be NULL. */
7149 if (!h->ref_regular_nonweak)
7155 if (htab->plt_type == PLT_NEW)
7160 plt = (ent->plt.offset
7161 + htab->plt->output_section->vma
7162 + htab->plt->output_offset);
7163 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
7165 if (info->shared || info->pie)
7169 if (ent->addend >= 32768)
7171 + ent->sec->output_section->vma
7172 + ent->sec->output_offset);
7173 else if (htab->elf.hgot != NULL)
7174 got = (htab->elf.hgot->root.u.def.value
7175 + htab->elf.hgot->root.u.def.section->output_section->vma
7176 + htab->elf.hgot->root.u.def.section->output_offset);
7180 if (plt + 0x8000 < 0x10000)
7182 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7184 bfd_put_32 (output_bfd, MTCTR_11, p);
7186 bfd_put_32 (output_bfd, BCTR, p);
7188 bfd_put_32 (output_bfd, NOP, p);
7193 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7195 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7197 bfd_put_32 (output_bfd, MTCTR_11, p);
7199 bfd_put_32 (output_bfd, BCTR, p);
7205 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7207 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7209 bfd_put_32 (output_bfd, MTCTR_11, p);
7211 bfd_put_32 (output_bfd, BCTR, p);
7214 /* We only need one non-PIC glink stub. */
7225 Elf_Internal_Rela rela;
7228 /* This symbols needs a copy reloc. Set it up. */
7231 fprintf (stderr, ", copy");
7234 BFD_ASSERT (h->dynindx != -1);
7236 if (ppc_elf_hash_entry (h)->has_sda_refs)
7240 BFD_ASSERT (s != NULL);
7242 rela.r_offset = (h->root.u.def.value
7243 + h->root.u.def.section->output_section->vma
7244 + h->root.u.def.section->output_offset);
7245 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7247 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7248 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7252 fprintf (stderr, "\n");
7255 /* Mark some specially defined symbols as absolute. */
7256 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7257 || (!htab->is_vxworks
7258 && (h == htab->elf.hgot
7259 || strcmp (h->root.root.string,
7260 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7261 sym->st_shndx = SHN_ABS;
7266 static enum elf_reloc_type_class
7267 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7269 switch (ELF32_R_TYPE (rela->r_info))
7271 case R_PPC_RELATIVE:
7272 return reloc_class_relative;
7275 case R_PPC_JMP_SLOT:
7276 return reloc_class_plt;
7278 return reloc_class_copy;
7280 return reloc_class_normal;
7284 /* Finish up the dynamic sections. */
7287 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7288 struct bfd_link_info *info)
7292 struct ppc_elf_link_hash_table *htab;
7297 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7300 htab = ppc_elf_hash_table (info);
7301 dynobj = elf_hash_table (info)->dynobj;
7302 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7303 if (htab->is_vxworks)
7304 splt = bfd_get_section_by_name (dynobj, ".plt");
7309 if (htab->elf.hgot != NULL)
7310 got = (htab->elf.hgot->root.u.def.value
7311 + htab->elf.hgot->root.u.def.section->output_section->vma
7312 + htab->elf.hgot->root.u.def.section->output_offset);
7314 if (htab->elf.dynamic_sections_created)
7316 Elf32_External_Dyn *dyncon, *dynconend;
7318 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7320 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7321 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7322 for (; dyncon < dynconend; dyncon++)
7324 Elf_Internal_Dyn dyn;
7327 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7332 if (htab->is_vxworks)
7336 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7340 dyn.d_un.d_val = htab->relplt->size;
7345 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7349 dyn.d_un.d_ptr = got;
7353 if (htab->is_vxworks)
7356 dyn.d_un.d_ptr -= htab->relplt->size;
7362 if (htab->is_vxworks
7363 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7368 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7372 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7373 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7374 if (htab->got != NULL)
7376 unsigned char *p = htab->got->contents;
7379 p += htab->elf.hgot->root.u.def.value;
7380 if (htab->plt_type == PLT_OLD)
7381 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7385 val = sdyn->output_section->vma + sdyn->output_offset;
7386 bfd_put_32 (output_bfd, val, p);
7388 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7391 /* Fill in the first entry in the VxWorks procedure linkage table. */
7392 if (splt && splt->size > 0)
7394 /* Use the right PLT. */
7395 static const bfd_vma *plt_entry = NULL;
7396 plt_entry = info->shared ?
7397 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7402 (htab->elf.hgot->root.u.def.section->output_section->vma
7403 + htab->elf.hgot->root.u.def.section->output_offset
7404 + htab->elf.hgot->root.u.def.value);
7405 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7407 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7408 splt->contents + 0);
7409 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7410 splt->contents + 4);
7414 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7415 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7417 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7418 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7419 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7420 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7421 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7422 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7426 Elf_Internal_Rela rela;
7429 loc = htab->srelplt2->contents;
7431 /* Output the @ha relocation for the first instruction. */
7432 rela.r_offset = (htab->plt->output_section->vma
7433 + htab->plt->output_offset
7435 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7437 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7438 loc += sizeof (Elf32_External_Rela);
7440 /* Output the @l relocation for the second instruction. */
7441 rela.r_offset = (htab->plt->output_section->vma
7442 + htab->plt->output_offset
7444 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7446 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7447 loc += sizeof (Elf32_External_Rela);
7449 /* Fix up the remaining relocations. They may have the wrong
7450 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7451 in which symbols were output. */
7452 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7454 Elf_Internal_Rela rel;
7456 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7457 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7458 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7459 loc += sizeof (Elf32_External_Rela);
7461 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7462 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7463 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7464 loc += sizeof (Elf32_External_Rela);
7466 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7467 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7468 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7469 loc += sizeof (Elf32_External_Rela);
7474 if (htab->glink != NULL && htab->glink->contents != NULL)
7477 unsigned char *endp;
7482 * PIC glink code is the following:
7484 * # ith PLT code stub.
7485 * addis 11,30,(plt+(i-1)*4-got)@ha
7486 * lwz 11,(plt+(i-1)*4-got)@l(11)
7490 * # A table of branches, one for each plt entry.
7491 * # The idea is that the plt call stub loads ctr (and r11) with these
7492 * # addresses, so (r11 - res_0) gives the plt index * 4.
7493 * res_0: b PLTresolve
7494 * res_1: b PLTresolve
7496 * # Some number of entries towards the end can be nops
7502 * addis 11,11,(1f-res_0)@ha
7505 * 1: addi 11,11,(1b-res_0)@l
7508 * sub 11,11,12 # r11 = index * 4
7509 * addis 12,12,(got+4-1b)@ha
7510 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7511 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7514 * add 11,0,11 # r11 = index * 12 = reloc offset.
7517 static const unsigned int pic_plt_resolve[] =
7537 static const unsigned int plt_resolve[] =
7557 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7559 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7562 /* Build the branch table, one for each plt entry (less one),
7563 and perhaps some padding. */
7564 p = htab->glink->contents;
7565 p += htab->glink_pltresolve;
7566 endp = htab->glink->contents;
7567 endp += htab->glink->size - GLINK_PLTRESOLVE;
7568 while (p < endp - 8 * 4)
7570 bfd_put_32 (output_bfd, B + endp - p, p);
7575 bfd_put_32 (output_bfd, NOP, p);
7579 res0 = (htab->glink_pltresolve
7580 + htab->glink->output_section->vma
7581 + htab->glink->output_offset);
7583 /* Last comes the PLTresolve stub. */
7584 if (info->shared || info->pie)
7588 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7590 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7593 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7595 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7596 + htab->glink->output_section->vma
7597 + htab->glink->output_offset);
7599 bfd_put_32 (output_bfd,
7600 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7601 bfd_put_32 (output_bfd,
7602 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7603 bfd_put_32 (output_bfd,
7604 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7605 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7607 bfd_put_32 (output_bfd,
7608 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7609 bfd_put_32 (output_bfd,
7610 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7614 bfd_put_32 (output_bfd,
7615 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7616 bfd_put_32 (output_bfd,
7617 LWZ_12_12 + 4, p + 9*4);
7622 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7624 bfd_put_32 (output_bfd, plt_resolve[i], p);
7627 p -= 4 * ARRAY_SIZE (plt_resolve);
7629 bfd_put_32 (output_bfd,
7630 LIS_12 + PPC_HA (got + 4), p + 0*4);
7631 bfd_put_32 (output_bfd,
7632 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7633 bfd_put_32 (output_bfd,
7634 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7635 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7637 bfd_put_32 (output_bfd,
7638 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7639 bfd_put_32 (output_bfd,
7640 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7644 bfd_put_32 (output_bfd,
7645 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7646 bfd_put_32 (output_bfd,
7647 LWZ_12_12 + 4, p + 6*4);
7655 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7656 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7657 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7658 #define TARGET_BIG_NAME "elf32-powerpc"
7659 #define ELF_ARCH bfd_arch_powerpc
7660 #define ELF_MACHINE_CODE EM_PPC
7661 #ifdef __QNXTARGET__
7662 #define ELF_MAXPAGESIZE 0x1000
7664 #define ELF_MAXPAGESIZE 0x10000
7666 #define ELF_MINPAGESIZE 0x1000
7667 #define ELF_COMMONPAGESIZE 0x1000
7668 #define elf_info_to_howto ppc_elf_info_to_howto
7670 #ifdef EM_CYGNUS_POWERPC
7671 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7675 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7678 #define elf_backend_plt_not_loaded 1
7679 #define elf_backend_can_gc_sections 1
7680 #define elf_backend_can_refcount 1
7681 #define elf_backend_rela_normal 1
7683 #define bfd_elf32_mkobject ppc_elf_mkobject
7684 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7685 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7686 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7687 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
7688 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7689 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7691 #define elf_backend_object_p ppc_elf_object_p
7692 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7693 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7694 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7695 #define elf_backend_relocate_section ppc_elf_relocate_section
7696 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7697 #define elf_backend_check_relocs ppc_elf_check_relocs
7698 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7699 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7700 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7701 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7702 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7703 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7704 #define elf_backend_fake_sections ppc_elf_fake_sections
7705 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7706 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7707 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7708 #define elf_backend_write_core_note ppc_elf_write_core_note
7709 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7710 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7711 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7712 #define elf_backend_write_section ppc_elf_write_section
7713 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7714 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7715 #define elf_backend_action_discarded ppc_elf_action_discarded
7716 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7718 #include "elf32-target.h"
7720 /* VxWorks Target */
7722 #undef TARGET_LITTLE_SYM
7723 #undef TARGET_LITTLE_NAME
7725 #undef TARGET_BIG_SYM
7726 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7727 #undef TARGET_BIG_NAME
7728 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7730 /* VxWorks uses the elf default section flags for .plt. */
7731 static const struct bfd_elf_special_section *
7732 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7734 if (sec->name == NULL)
7737 if (strcmp (sec->name, ".plt") == 0)
7738 return _bfd_elf_get_sec_type_attr (abfd, sec);
7740 return ppc_elf_get_sec_type_attr (abfd, sec);
7743 /* Like ppc_elf_link_hash_table_create, but overrides
7744 appropriately for VxWorks. */
7745 static struct bfd_link_hash_table *
7746 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7748 struct bfd_link_hash_table *ret;
7750 ret = ppc_elf_link_hash_table_create (abfd);
7753 struct ppc_elf_link_hash_table *htab
7754 = (struct ppc_elf_link_hash_table *)ret;
7755 htab->is_vxworks = 1;
7756 htab->plt_type = PLT_VXWORKS;
7757 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7758 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7759 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7764 /* Tweak magic VxWorks symbols as they are loaded. */
7766 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7767 struct bfd_link_info *info,
7768 Elf_Internal_Sym *sym,
7769 const char **namep ATTRIBUTE_UNUSED,
7770 flagword *flagsp ATTRIBUTE_UNUSED,
7774 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7778 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7782 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7784 ppc_elf_final_write_processing(abfd, linker);
7785 elf_vxworks_final_write_processing(abfd, linker);
7788 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7790 #undef elf_backend_want_plt_sym
7791 #define elf_backend_want_plt_sym 1
7792 #undef elf_backend_want_got_plt
7793 #define elf_backend_want_got_plt 1
7794 #undef elf_backend_got_symbol_offset
7795 #define elf_backend_got_symbol_offset 0
7796 #undef elf_backend_plt_not_loaded
7797 #define elf_backend_plt_not_loaded 0
7798 #undef elf_backend_plt_readonly
7799 #define elf_backend_plt_readonly 1
7800 #undef elf_backend_got_header_size
7801 #define elf_backend_got_header_size 12
7803 #undef bfd_elf32_bfd_link_hash_table_create
7804 #define bfd_elf32_bfd_link_hash_table_create \
7805 ppc_elf_vxworks_link_hash_table_create
7806 #undef elf_backend_add_symbol_hook
7807 #define elf_backend_add_symbol_hook \
7808 ppc_elf_vxworks_add_symbol_hook
7809 #undef elf_backend_link_output_symbol_hook
7810 #define elf_backend_link_output_symbol_hook \
7811 elf_vxworks_link_output_symbol_hook
7812 #undef elf_backend_final_write_processing
7813 #define elf_backend_final_write_processing \
7814 ppc_elf_vxworks_final_write_processing
7815 #undef elf_backend_get_sec_type_attr
7816 #define elf_backend_get_sec_type_attr \
7817 ppc_elf_vxworks_get_sec_type_attr
7818 #undef elf_backend_emit_relocs
7819 #define elf_backend_emit_relocs \
7820 elf_vxworks_emit_relocs
7823 #define elf32_bed ppc_elf_vxworks_bed
7825 #include "elf32-target.h"
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