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, 2008 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 #define is_ppc_elf(bfd) \
1740 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1741 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1743 /* Override the generic function because we store some extras. */
1746 ppc_elf_mkobject (bfd *abfd)
1748 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1752 /* Fix bad default arch selected for a 32 bit input bfd when the
1753 default is 64 bit. */
1756 ppc_elf_object_p (bfd *abfd)
1758 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1760 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1762 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1764 /* Relies on arch after 64 bit default being 32 bit default. */
1765 abfd->arch_info = abfd->arch_info->next;
1766 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1772 /* Function to set whether a module needs the -mrelocatable bit set. */
1775 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1777 BFD_ASSERT (!elf_flags_init (abfd)
1778 || elf_elfheader (abfd)->e_flags == flags);
1780 elf_elfheader (abfd)->e_flags = flags;
1781 elf_flags_init (abfd) = TRUE;
1785 /* Support for core dump NOTE sections. */
1788 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1793 switch (note->descsz)
1798 case 268: /* Linux/PPC. */
1800 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1803 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1812 /* Make a ".reg/999" section. */
1813 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1814 size, note->descpos + offset);
1818 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1820 switch (note->descsz)
1825 case 128: /* Linux/PPC elf_prpsinfo. */
1826 elf_tdata (abfd)->core_program
1827 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1828 elf_tdata (abfd)->core_command
1829 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1832 /* Note that for some reason, a spurious space is tacked
1833 onto the end of the args in some (at least one anyway)
1834 implementations, so strip it off if it exists. */
1837 char *command = elf_tdata (abfd)->core_command;
1838 int n = strlen (command);
1840 if (0 < n && command[n - 1] == ' ')
1841 command[n - 1] = '\0';
1848 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1860 va_start (ap, note_type);
1861 memset (data, 0, 32);
1862 strncpy (data + 32, va_arg (ap, const char *), 16);
1863 strncpy (data + 48, va_arg (ap, const char *), 80);
1865 return elfcore_write_note (abfd, buf, bufsiz,
1866 "CORE", note_type, data, sizeof (data));
1877 va_start (ap, note_type);
1878 memset (data, 0, 72);
1879 pid = va_arg (ap, long);
1880 bfd_put_32 (abfd, pid, data + 24);
1881 cursig = va_arg (ap, int);
1882 bfd_put_16 (abfd, cursig, data + 12);
1883 greg = va_arg (ap, const void *);
1884 memcpy (data + 72, greg, 192);
1885 memset (data + 264, 0, 4);
1887 return elfcore_write_note (abfd, buf, bufsiz,
1888 "CORE", note_type, data, sizeof (data));
1893 /* Return address for Ith PLT stub in section PLT, for relocation REL
1894 or (bfd_vma) -1 if it should not be included. */
1897 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1898 const asection *plt ATTRIBUTE_UNUSED,
1901 return rel->address;
1904 /* Handle a PowerPC specific section when reading an object file. This
1905 is called when bfd_section_from_shdr finds a section with an unknown
1909 ppc_elf_section_from_shdr (bfd *abfd,
1910 Elf_Internal_Shdr *hdr,
1917 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1920 newsect = hdr->bfd_section;
1921 flags = bfd_get_section_flags (abfd, newsect);
1922 if (hdr->sh_flags & SHF_EXCLUDE)
1923 flags |= SEC_EXCLUDE;
1925 if (hdr->sh_type == SHT_ORDERED)
1926 flags |= SEC_SORT_ENTRIES;
1928 bfd_set_section_flags (abfd, newsect, flags);
1932 /* Set up any other section flags and such that may be necessary. */
1935 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1936 Elf_Internal_Shdr *shdr,
1939 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1940 shdr->sh_flags |= SHF_EXCLUDE;
1942 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1943 shdr->sh_type = SHT_ORDERED;
1948 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1949 need to bump up the number of section headers. */
1952 ppc_elf_additional_program_headers (bfd *abfd,
1953 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1958 s = bfd_get_section_by_name (abfd, ".sbss2");
1959 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1962 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1963 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1969 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1970 .PPC.EMB.sbss0 a normal section, and not a bss section so
1971 that the linker doesn't crater when trying to make more than
1974 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1976 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1977 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1978 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1979 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1980 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1981 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1982 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1983 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1984 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1985 { NULL, 0, 0, 0, 0 }
1988 /* This is what we want for new plt/got. */
1989 static struct bfd_elf_special_section ppc_alt_plt =
1990 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1992 static const struct bfd_elf_special_section *
1993 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1995 const struct bfd_elf_special_section *ssect;
1997 /* See if this is one of the special sections. */
1998 if (sec->name == NULL)
2001 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2005 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2006 ssect = &ppc_alt_plt;
2010 return _bfd_elf_get_sec_type_attr (abfd, sec);
2013 /* Very simple linked list structure for recording apuinfo values. */
2014 typedef struct apuinfo_list
2016 struct apuinfo_list *next;
2017 unsigned long value;
2021 static apuinfo_list *head;
2025 apuinfo_list_init (void)
2031 apuinfo_list_add (unsigned long value)
2033 apuinfo_list *entry = head;
2035 while (entry != NULL)
2037 if (entry->value == value)
2039 entry = entry->next;
2042 entry = bfd_malloc (sizeof (* entry));
2046 entry->value = value;
2052 apuinfo_list_length (void)
2054 apuinfo_list *entry;
2055 unsigned long count;
2057 for (entry = head, count = 0;
2059 entry = entry->next)
2065 static inline unsigned long
2066 apuinfo_list_element (unsigned long number)
2068 apuinfo_list * entry;
2072 entry = entry->next)
2075 return entry ? entry->value : 0;
2079 apuinfo_list_finish (void)
2081 apuinfo_list *entry;
2083 for (entry = head; entry;)
2085 apuinfo_list *next = entry->next;
2093 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2094 #define APUINFO_LABEL "APUinfo"
2096 /* Scan the input BFDs and create a linked list of
2097 the APUinfo values that will need to be emitted. */
2100 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2105 unsigned num_input_sections;
2106 bfd_size_type output_section_size;
2108 unsigned num_entries;
2109 unsigned long offset;
2110 unsigned long length;
2111 const char *error_message = NULL;
2113 if (link_info == NULL)
2116 /* Scan the input bfds, looking for apuinfo sections. */
2117 num_input_sections = 0;
2118 output_section_size = 0;
2120 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2122 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2125 ++ num_input_sections;
2126 output_section_size += asec->size;
2130 /* We need at least one input sections
2131 in order to make merging worthwhile. */
2132 if (num_input_sections < 1)
2135 /* Just make sure that the output section exists as well. */
2136 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2140 /* Allocate a buffer for the contents of the input sections. */
2141 buffer = bfd_malloc (output_section_size);
2146 apuinfo_list_init ();
2148 /* Read in the input sections contents. */
2149 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2151 unsigned long datum;
2154 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2158 length = asec->size;
2161 error_message = _("corrupt or empty %s section in %B");
2165 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2166 || (bfd_bread (buffer + offset, length, ibfd) != length))
2168 error_message = _("unable to read in %s section from %B");
2172 /* Process the contents of the section. */
2173 ptr = buffer + offset;
2174 error_message = _("corrupt %s section in %B");
2176 /* Verify the contents of the header. Note - we have to
2177 extract the values this way in order to allow for a
2178 host whose endian-ness is different from the target. */
2179 datum = bfd_get_32 (ibfd, ptr);
2180 if (datum != sizeof APUINFO_LABEL)
2183 datum = bfd_get_32 (ibfd, ptr + 8);
2187 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2190 /* Get the number of bytes used for apuinfo entries. */
2191 datum = bfd_get_32 (ibfd, ptr + 4);
2192 if (datum + 20 != length)
2195 /* Make sure that we do not run off the end of the section. */
2196 if (offset + length > output_section_size)
2199 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2200 for (i = 0; i < datum; i += 4)
2201 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2203 /* Update the offset. */
2207 error_message = NULL;
2209 /* Compute the size of the output section. */
2210 num_entries = apuinfo_list_length ();
2211 output_section_size = 20 + num_entries * 4;
2213 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2215 if (! bfd_set_section_size (abfd, asec, output_section_size))
2217 error_message = _("warning: unable to set size of %s section in %B");
2223 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2226 /* Prevent the output section from accumulating the input sections'
2227 contents. We have already stored this in our linked list structure. */
2230 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2231 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2233 bfd_byte *contents ATTRIBUTE_UNUSED)
2235 return (apuinfo_list_length ()
2236 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2239 /* Finally we can generate the output section. */
2242 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2247 unsigned num_entries;
2248 bfd_size_type length;
2250 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2254 if (apuinfo_list_length () == 0)
2257 length = asec->size;
2261 buffer = bfd_malloc (length);
2264 (*_bfd_error_handler)
2265 (_("failed to allocate space for new APUinfo section."));
2269 /* Create the apuinfo header. */
2270 num_entries = apuinfo_list_length ();
2271 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2272 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2273 bfd_put_32 (abfd, 0x2, buffer + 8);
2274 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2277 for (i = 0; i < num_entries; i++)
2279 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2283 if (length != asec->size)
2284 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2286 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2287 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2291 apuinfo_list_finish ();
2295 is_pic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2300 if (!bfd_get_section_contents (abfd, glink, buf, off, 16))
2303 insn = bfd_get_32 (abfd, buf);
2304 if ((insn & 0xffff0000) == LWZ_11_30
2305 && bfd_get_32 (abfd, buf + 4) == MTCTR_11
2306 && bfd_get_32 (abfd, buf + 8) == BCTR)
2309 if ((insn & 0xffff0000) == ADDIS_11_30
2310 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2311 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2312 && bfd_get_32 (abfd, buf + 12) == BCTR)
2318 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2320 bfd_vma vma = *(bfd_vma *) ptr;
2321 return ((section->flags & SEC_ALLOC) != 0
2322 && section->vma <= vma
2323 && vma < section->vma + section->size);
2327 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2328 long dynsymcount, asymbol **dynsyms,
2331 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2332 asection *plt, *relplt, *dynamic, *glink;
2333 bfd_vma glink_vma = 0;
2334 bfd_vma resolv_vma = 0;
2345 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2348 if (dynsymcount <= 0)
2351 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2355 plt = bfd_get_section_by_name (abfd, ".plt");
2359 /* Call common code to handle old-style executable PLTs. */
2360 if (elf_section_flags (plt) & SHF_EXECINSTR)
2361 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2362 dynsymcount, dynsyms, ret);
2364 /* If this object was prelinked, the prelinker stored the address
2365 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2366 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2367 if (dynamic != NULL)
2369 bfd_byte *dynbuf, *extdyn, *extdynend;
2371 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2373 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2376 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2377 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2380 extdynend = extdyn + dynamic->size;
2381 for (; extdyn < extdynend; extdyn += extdynsize)
2383 Elf_Internal_Dyn dyn;
2384 (*swap_dyn_in) (abfd, extdyn, &dyn);
2386 if (dyn.d_tag == DT_NULL)
2389 if (dyn.d_tag == DT_PPC_GOT)
2391 unsigned int g_o_t = dyn.d_un.d_val;
2392 asection *got = bfd_get_section_by_name (abfd, ".got");
2394 && bfd_get_section_contents (abfd, got, buf,
2395 g_o_t - got->vma + 4, 4))
2396 glink_vma = bfd_get_32 (abfd, buf);
2403 /* Otherwise we read the first plt entry. */
2406 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2407 glink_vma = bfd_get_32 (abfd, buf);
2413 /* The .glink section usually does not survive the final
2414 link; search for the section (usually .text) where the
2415 glink stubs now reside. */
2416 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2420 /* Determine glink PLT resolver by reading the relative branch
2421 from the first glink stub. */
2422 if (bfd_get_section_contents (abfd, glink, buf,
2423 glink_vma - glink->vma, 4))
2425 unsigned int insn = bfd_get_32 (abfd, buf);
2427 /* The first glink stub may either branch to the resolver ... */
2429 if ((insn & ~0x3fffffc) == 0)
2430 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2432 /* ... or fall through a bunch of NOPs. */
2433 else if ((insn ^ B ^ NOP) == 0)
2435 bfd_get_section_contents (abfd, glink, buf,
2436 glink_vma - glink->vma + i, 4);
2438 if (bfd_get_32 (abfd, buf) != NOP)
2440 resolv_vma = glink_vma + i;
2445 count = relplt->size / sizeof (Elf32_External_Rela);
2446 stub_vma = glink_vma - (bfd_vma) count * 16;
2447 /* If the stubs are those for -shared/-pie then we might have
2448 multiple stubs for each plt entry. If that is the case then
2449 there is no way to associate stubs with their plt entries short
2450 of figuring out the GOT pointer value used in the stub. */
2451 if (!bfd_get_section_contents (abfd, glink, buf,
2452 stub_vma - glink->vma, 4)
2453 || ((bfd_get_32 (abfd, buf) & 0xffff0000) != LIS_11
2454 && is_pic_glink_stub (abfd, glink, stub_vma - glink->vma - 16)))
2457 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2458 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2461 size = count * sizeof (asymbol);
2462 p = relplt->relocation;
2463 for (i = 0; i < count; i++, p++)
2464 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2466 size += sizeof (asymbol) + sizeof ("__glink");
2469 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2471 s = *ret = bfd_malloc (size);
2475 names = (char *) (s + count + 1 + (resolv_vma != 0));
2476 p = relplt->relocation;
2477 for (i = 0; i < count; i++, p++)
2481 *s = **p->sym_ptr_ptr;
2482 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2483 we are defining a symbol, ensure one of them is set. */
2484 if ((s->flags & BSF_LOCAL) == 0)
2485 s->flags |= BSF_GLOBAL;
2486 s->flags |= BSF_SYNTHETIC;
2488 s->value = stub_vma - glink->vma;
2491 len = strlen ((*p->sym_ptr_ptr)->name);
2492 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2494 memcpy (names, "@plt", sizeof ("@plt"));
2495 names += sizeof ("@plt");
2500 /* Add a symbol at the start of the glink branch table. */
2501 memset (s, 0, sizeof *s);
2503 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2505 s->value = glink_vma - glink->vma;
2507 memcpy (names, "__glink", sizeof ("__glink"));
2508 names += sizeof ("__glink");
2514 /* Add a symbol for the glink PLT resolver. */
2515 memset (s, 0, sizeof *s);
2517 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2519 s->value = resolv_vma - glink->vma;
2521 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2522 names += sizeof ("__glink_PLTresolve");
2530 /* The following functions are specific to the ELF linker, while
2531 functions above are used generally. They appear in this file more
2532 or less in the order in which they are called. eg.
2533 ppc_elf_check_relocs is called early in the link process,
2534 ppc_elf_finish_dynamic_sections is one of the last functions
2537 /* The PPC linker needs to keep track of the number of relocs that it
2538 decides to copy as dynamic relocs in check_relocs for each symbol.
2539 This is so that it can later discard them if they are found to be
2540 unnecessary. We store the information in a field extending the
2541 regular ELF linker hash table. */
2543 struct ppc_elf_dyn_relocs
2545 struct ppc_elf_dyn_relocs *next;
2547 /* The input section of the reloc. */
2550 /* Total number of relocs copied for the input section. */
2551 bfd_size_type count;
2553 /* Number of pc-relative relocs copied for the input section. */
2554 bfd_size_type pc_count;
2557 /* Track PLT entries needed for a given symbol. We might need more
2558 than one glink entry per symbol. */
2561 struct plt_entry *next;
2563 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2564 This field stores the offset into .got2 used to initialise the
2565 GOT pointer reg. It will always be at least 32768 (and for
2566 current gcc this is the only offset used). */
2569 /* The .got2 section. */
2572 /* PLT refcount or offset. */
2575 bfd_signed_vma refcount;
2579 /* .glink stub offset. */
2580 bfd_vma glink_offset;
2583 /* Of those relocs that might be copied as dynamic relocs, this function
2584 selects those that must be copied when linking a shared library,
2585 even when the symbol is local. */
2588 must_be_dyn_reloc (struct bfd_link_info *info,
2589 enum elf_ppc_reloc_type r_type)
2598 case R_PPC_REL14_BRTAKEN:
2599 case R_PPC_REL14_BRNTAKEN:
2605 case R_PPC_TPREL16_LO:
2606 case R_PPC_TPREL16_HI:
2607 case R_PPC_TPREL16_HA:
2608 return !info->executable;
2612 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2613 copying dynamic variables from a shared lib into an app's dynbss
2614 section, and instead use a dynamic relocation to point into the
2616 #define ELIMINATE_COPY_RELOCS 1
2618 /* PPC ELF linker hash entry. */
2620 struct ppc_elf_link_hash_entry
2622 struct elf_link_hash_entry elf;
2624 /* If this symbol is used in the linker created sections, the processor
2625 specific backend uses this field to map the field into the offset
2626 from the beginning of the section. */
2627 elf_linker_section_pointers_t *linker_section_pointer;
2629 /* Track dynamic relocs copied for this symbol. */
2630 struct ppc_elf_dyn_relocs *dyn_relocs;
2632 /* Contexts in which symbol is used in the GOT (or TOC).
2633 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2634 corresponding relocs are encountered during check_relocs.
2635 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2636 indicate the corresponding GOT entry type is not needed. */
2637 #define TLS_GD 1 /* GD reloc. */
2638 #define TLS_LD 2 /* LD reloc. */
2639 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2640 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2641 #define TLS_TLS 16 /* Any TLS reloc. */
2642 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2645 /* Nonzero if we have seen a small data relocation referring to this
2647 unsigned char has_sda_refs;
2650 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2652 /* PPC ELF linker hash table. */
2654 struct ppc_elf_link_hash_table
2656 struct elf_link_hash_table elf;
2658 /* Short-cuts to get to dynamic linker sections. */
2668 elf_linker_section_t sdata[2];
2671 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2674 /* The .got.plt section (VxWorks only)*/
2677 /* Shortcut to __tls_get_addr. */
2678 struct elf_link_hash_entry *tls_get_addr;
2680 /* The bfd that forced an old-style PLT. */
2683 /* TLS local dynamic got entry handling. */
2685 bfd_signed_vma refcount;
2689 /* Offset of PltResolve function in glink. */
2690 bfd_vma glink_pltresolve;
2692 /* Size of reserved GOT entries. */
2693 unsigned int got_header_size;
2694 /* Non-zero if allocating the header left a gap. */
2695 unsigned int got_gap;
2697 /* The type of PLT we have chosen to use. */
2698 enum ppc_elf_plt_type plt_type;
2700 /* Set if we should emit symbols for stubs. */
2701 unsigned int emit_stub_syms:1;
2703 /* True if the target system is VxWorks. */
2704 unsigned int is_vxworks:1;
2706 /* The size of PLT entries. */
2708 /* The distance between adjacent PLT slots. */
2710 /* The size of the first PLT entry. */
2711 int plt_initial_entry_size;
2713 /* Small local sym to section mapping cache. */
2714 struct sym_sec_cache sym_sec;
2717 /* Get the PPC ELF linker hash table from a link_info structure. */
2719 #define ppc_elf_hash_table(p) \
2720 ((struct ppc_elf_link_hash_table *) (p)->hash)
2722 /* Create an entry in a PPC ELF linker hash table. */
2724 static struct bfd_hash_entry *
2725 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2726 struct bfd_hash_table *table,
2729 /* Allocate the structure if it has not already been allocated by a
2733 entry = bfd_hash_allocate (table,
2734 sizeof (struct ppc_elf_link_hash_entry));
2739 /* Call the allocation method of the superclass. */
2740 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2743 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2744 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2745 ppc_elf_hash_entry (entry)->tls_mask = 0;
2751 /* Create a PPC ELF linker hash table. */
2753 static struct bfd_link_hash_table *
2754 ppc_elf_link_hash_table_create (bfd *abfd)
2756 struct ppc_elf_link_hash_table *ret;
2758 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2762 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2763 ppc_elf_link_hash_newfunc,
2764 sizeof (struct ppc_elf_link_hash_entry)))
2770 ret->elf.init_plt_refcount.refcount = 0;
2771 ret->elf.init_plt_refcount.glist = NULL;
2772 ret->elf.init_plt_offset.offset = 0;
2773 ret->elf.init_plt_offset.glist = NULL;
2775 ret->sdata[0].name = ".sdata";
2776 ret->sdata[0].sym_name = "_SDA_BASE_";
2777 ret->sdata[0].bss_name = ".sbss";
2779 ret->sdata[1].name = ".sdata2";
2780 ret->sdata[1].sym_name = "_SDA2_BASE_";
2781 ret->sdata[1].bss_name = ".sbss2";
2783 ret->plt_entry_size = 12;
2784 ret->plt_slot_size = 8;
2785 ret->plt_initial_entry_size = 72;
2787 return &ret->elf.root;
2790 /* Create .got and the related sections. */
2793 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2795 struct ppc_elf_link_hash_table *htab;
2799 if (!_bfd_elf_create_got_section (abfd, info))
2802 htab = ppc_elf_hash_table (info);
2803 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2807 if (htab->is_vxworks)
2809 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2815 /* The powerpc .got has a blrl instruction in it. Mark it
2817 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2818 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2819 if (!bfd_set_section_flags (abfd, s, flags))
2823 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2824 | SEC_LINKER_CREATED | SEC_READONLY);
2825 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2827 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2833 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2834 to output sections (just like _bfd_elf_create_dynamic_sections has
2835 to create .dynbss and .rela.bss). */
2838 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2840 struct ppc_elf_link_hash_table *htab;
2844 htab = ppc_elf_hash_table (info);
2846 if (htab->got == NULL
2847 && !ppc_elf_create_got (abfd, info))
2850 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2853 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2854 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2856 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2859 || !bfd_set_section_alignment (abfd, s, 4))
2862 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2863 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2864 SEC_ALLOC | SEC_LINKER_CREATED);
2871 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2872 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2875 || ! bfd_set_section_alignment (abfd, s, 2))
2879 if (htab->is_vxworks
2880 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2883 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2884 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2888 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2889 if (htab->plt_type == PLT_VXWORKS)
2890 /* The VxWorks PLT is a loaded section with contents. */
2891 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2892 return bfd_set_section_flags (abfd, s, flags);
2895 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2898 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2899 struct elf_link_hash_entry *dir,
2900 struct elf_link_hash_entry *ind)
2902 struct ppc_elf_link_hash_entry *edir, *eind;
2904 edir = (struct ppc_elf_link_hash_entry *) dir;
2905 eind = (struct ppc_elf_link_hash_entry *) ind;
2907 if (eind->dyn_relocs != NULL)
2909 if (edir->dyn_relocs != NULL)
2911 struct ppc_elf_dyn_relocs **pp;
2912 struct ppc_elf_dyn_relocs *p;
2914 /* Add reloc counts against the indirect sym to the direct sym
2915 list. Merge any entries against the same section. */
2916 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2918 struct ppc_elf_dyn_relocs *q;
2920 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2921 if (q->sec == p->sec)
2923 q->pc_count += p->pc_count;
2924 q->count += p->count;
2931 *pp = edir->dyn_relocs;
2934 edir->dyn_relocs = eind->dyn_relocs;
2935 eind->dyn_relocs = NULL;
2938 edir->tls_mask |= eind->tls_mask;
2939 edir->has_sda_refs |= eind->has_sda_refs;
2941 /* If called to transfer flags for a weakdef during processing
2942 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2943 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2944 if (!(ELIMINATE_COPY_RELOCS
2945 && eind->elf.root.type != bfd_link_hash_indirect
2946 && edir->elf.dynamic_adjusted))
2947 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2949 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2950 edir->elf.ref_regular |= eind->elf.ref_regular;
2951 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2952 edir->elf.needs_plt |= eind->elf.needs_plt;
2953 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2955 /* If we were called to copy over info for a weak sym, that's all. */
2956 if (eind->elf.root.type != bfd_link_hash_indirect)
2959 /* Copy over the GOT refcount entries that we may have already seen to
2960 the symbol which just became indirect. */
2961 edir->elf.got.refcount += eind->elf.got.refcount;
2962 eind->elf.got.refcount = 0;
2964 /* And plt entries. */
2965 if (eind->elf.plt.plist != NULL)
2967 if (edir->elf.plt.plist != NULL)
2969 struct plt_entry **entp;
2970 struct plt_entry *ent;
2972 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2974 struct plt_entry *dent;
2976 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2977 if (dent->sec == ent->sec && dent->addend == ent->addend)
2979 dent->plt.refcount += ent->plt.refcount;
2986 *entp = edir->elf.plt.plist;
2989 edir->elf.plt.plist = eind->elf.plt.plist;
2990 eind->elf.plt.plist = NULL;
2993 if (eind->elf.dynindx != -1)
2995 if (edir->elf.dynindx != -1)
2996 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2997 edir->elf.dynstr_index);
2998 edir->elf.dynindx = eind->elf.dynindx;
2999 edir->elf.dynstr_index = eind->elf.dynstr_index;
3000 eind->elf.dynindx = -1;
3001 eind->elf.dynstr_index = 0;
3005 /* Hook called by the linker routine which adds symbols from an object
3006 file. We use it to put .comm items in .sbss, and not .bss. */
3009 ppc_elf_add_symbol_hook (bfd *abfd,
3010 struct bfd_link_info *info,
3011 Elf_Internal_Sym *sym,
3012 const char **namep ATTRIBUTE_UNUSED,
3013 flagword *flagsp ATTRIBUTE_UNUSED,
3017 if (sym->st_shndx == SHN_COMMON
3018 && !info->relocatable
3019 && is_ppc_elf (info->output_bfd)
3020 && sym->st_size <= elf_gp_size (abfd))
3022 /* Common symbols less than or equal to -G nn bytes are automatically
3024 struct ppc_elf_link_hash_table *htab;
3026 htab = ppc_elf_hash_table (info);
3027 if (htab->sbss == NULL)
3029 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3031 if (!htab->elf.dynobj)
3032 htab->elf.dynobj = abfd;
3034 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3037 if (htab->sbss == NULL)
3042 *valp = sym->st_size;
3049 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3050 elf_linker_section_t *lsect)
3052 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3054 if (lsect->sym == NULL)
3056 if (lsect->sym->root.type == bfd_link_hash_new)
3057 lsect->sym->non_elf = 0;
3058 lsect->sym->ref_regular = 1;
3062 /* Create a special linker section. */
3065 ppc_elf_create_linker_section (bfd *abfd,
3066 struct bfd_link_info *info,
3068 elf_linker_section_t *lsect)
3070 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3073 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3074 | SEC_LINKER_CREATED);
3076 /* Record the first bfd that needs the special sections. */
3077 if (!htab->elf.dynobj)
3078 htab->elf.dynobj = abfd;
3080 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3084 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3088 return create_sdata_sym (htab, lsect);
3091 /* Find a linker generated pointer with a given addend and type. */
3093 static elf_linker_section_pointers_t *
3094 elf_find_pointer_linker_section
3095 (elf_linker_section_pointers_t *linker_pointers,
3097 elf_linker_section_t *lsect)
3099 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3100 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3101 return linker_pointers;
3106 /* Allocate a pointer to live in a linker created section. */
3109 elf_create_pointer_linker_section (bfd *abfd,
3110 elf_linker_section_t *lsect,
3111 struct elf_link_hash_entry *h,
3112 const Elf_Internal_Rela *rel)
3114 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3115 elf_linker_section_pointers_t *linker_section_ptr;
3116 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3119 BFD_ASSERT (lsect != NULL);
3121 /* Is this a global symbol? */
3124 struct ppc_elf_link_hash_entry *eh;
3126 /* Has this symbol already been allocated? If so, our work is done. */
3127 eh = (struct ppc_elf_link_hash_entry *) h;
3128 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3133 ptr_linker_section_ptr = &eh->linker_section_pointer;
3137 BFD_ASSERT (is_ppc_elf (abfd));
3139 /* Allocation of a pointer to a local symbol. */
3140 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3142 /* Allocate a table to hold the local symbols if first time. */
3145 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3148 amt *= sizeof (elf_linker_section_pointers_t *);
3149 ptr = bfd_zalloc (abfd, amt);
3154 elf_local_ptr_offsets (abfd) = ptr;
3157 /* Has this symbol already been allocated? If so, our work is done. */
3158 if (elf_find_pointer_linker_section (ptr[r_symndx],
3163 ptr_linker_section_ptr = &ptr[r_symndx];
3166 /* Allocate space for a pointer in the linker section, and allocate
3167 a new pointer record from internal memory. */
3168 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3169 amt = sizeof (elf_linker_section_pointers_t);
3170 linker_section_ptr = bfd_alloc (abfd, amt);
3172 if (!linker_section_ptr)
3175 linker_section_ptr->next = *ptr_linker_section_ptr;
3176 linker_section_ptr->addend = rel->r_addend;
3177 linker_section_ptr->lsect = lsect;
3178 *ptr_linker_section_ptr = linker_section_ptr;
3180 linker_section_ptr->offset = lsect->section->size;
3181 lsect->section->size += 4;
3185 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3186 lsect->name, (long) linker_section_ptr->offset,
3187 (long) lsect->section->size);
3194 update_local_sym_info (bfd *abfd,
3195 Elf_Internal_Shdr *symtab_hdr,
3196 unsigned long r_symndx,
3199 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3200 char *local_got_tls_masks;
3202 if (local_got_refcounts == NULL)
3204 bfd_size_type size = symtab_hdr->sh_info;
3206 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3207 local_got_refcounts = bfd_zalloc (abfd, size);
3208 if (local_got_refcounts == NULL)
3210 elf_local_got_refcounts (abfd) = local_got_refcounts;
3213 local_got_refcounts[r_symndx] += 1;
3214 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3215 local_got_tls_masks[r_symndx] |= tls_type;
3220 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3221 asection *sec, bfd_vma addend)
3223 struct plt_entry *ent;
3227 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3228 if (ent->sec == sec && ent->addend == addend)
3232 bfd_size_type amt = sizeof (*ent);
3233 ent = bfd_alloc (abfd, amt);
3236 ent->next = h->plt.plist;
3238 ent->addend = addend;
3239 ent->plt.refcount = 0;
3242 ent->plt.refcount += 1;
3246 static struct plt_entry *
3247 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3249 struct plt_entry *ent;
3253 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3254 if (ent->sec == sec && ent->addend == addend)
3260 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3262 (*_bfd_error_handler)
3263 (_("%B: relocation %s cannot be used when making a shared object"),
3265 ppc_elf_howto_table[r_type]->name);
3266 bfd_set_error (bfd_error_bad_value);
3269 /* Look through the relocs for a section during the first phase, and
3270 allocate space in the global offset table or procedure linkage
3274 ppc_elf_check_relocs (bfd *abfd,
3275 struct bfd_link_info *info,
3277 const Elf_Internal_Rela *relocs)
3279 struct ppc_elf_link_hash_table *htab;
3280 Elf_Internal_Shdr *symtab_hdr;
3281 struct elf_link_hash_entry **sym_hashes;
3282 const Elf_Internal_Rela *rel;
3283 const Elf_Internal_Rela *rel_end;
3284 asection *got2, *sreloc;
3286 if (info->relocatable)
3289 /* Don't do anything special with non-loaded, non-alloced sections.
3290 In particular, any relocs in such sections should not affect GOT
3291 and PLT reference counting (ie. we don't allow them to create GOT
3292 or PLT entries), there's no possibility or desire to optimize TLS
3293 relocs, and there's not much point in propagating relocs to shared
3294 libs that the dynamic linker won't relocate. */
3295 if ((sec->flags & SEC_ALLOC) == 0)
3299 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3303 BFD_ASSERT (is_ppc_elf (abfd));
3305 /* Initialize howto table if not already done. */
3306 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3307 ppc_elf_howto_init ();
3309 htab = ppc_elf_hash_table (info);
3310 symtab_hdr = &elf_symtab_hdr (abfd);
3311 sym_hashes = elf_sym_hashes (abfd);
3312 got2 = bfd_get_section_by_name (abfd, ".got2");
3315 rel_end = relocs + sec->reloc_count;
3316 for (rel = relocs; rel < rel_end; rel++)
3318 unsigned long r_symndx;
3319 enum elf_ppc_reloc_type r_type;
3320 struct elf_link_hash_entry *h;
3323 r_symndx = ELF32_R_SYM (rel->r_info);
3324 if (r_symndx < symtab_hdr->sh_info)
3328 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3329 while (h->root.type == bfd_link_hash_indirect
3330 || h->root.type == bfd_link_hash_warning)
3331 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3334 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3335 This shows up in particular in an R_PPC_ADDR32 in the eabi
3338 && htab->got == NULL
3339 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3341 if (htab->elf.dynobj == NULL)
3342 htab->elf.dynobj = abfd;
3343 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3345 BFD_ASSERT (h == htab->elf.hgot);
3348 r_type = ELF32_R_TYPE (rel->r_info);
3351 case R_PPC_GOT_TLSLD16:
3352 case R_PPC_GOT_TLSLD16_LO:
3353 case R_PPC_GOT_TLSLD16_HI:
3354 case R_PPC_GOT_TLSLD16_HA:
3355 tls_type = TLS_TLS | TLS_LD;
3358 case R_PPC_GOT_TLSGD16:
3359 case R_PPC_GOT_TLSGD16_LO:
3360 case R_PPC_GOT_TLSGD16_HI:
3361 case R_PPC_GOT_TLSGD16_HA:
3362 tls_type = TLS_TLS | TLS_GD;
3365 case R_PPC_GOT_TPREL16:
3366 case R_PPC_GOT_TPREL16_LO:
3367 case R_PPC_GOT_TPREL16_HI:
3368 case R_PPC_GOT_TPREL16_HA:
3369 if (!info->executable)
3370 info->flags |= DF_STATIC_TLS;
3371 tls_type = TLS_TLS | TLS_TPREL;
3374 case R_PPC_GOT_DTPREL16:
3375 case R_PPC_GOT_DTPREL16_LO:
3376 case R_PPC_GOT_DTPREL16_HI:
3377 case R_PPC_GOT_DTPREL16_HA:
3378 tls_type = TLS_TLS | TLS_DTPREL;
3380 sec->has_tls_reloc = 1;
3383 /* GOT16 relocations */
3385 case R_PPC_GOT16_LO:
3386 case R_PPC_GOT16_HI:
3387 case R_PPC_GOT16_HA:
3388 /* This symbol requires a global offset table entry. */
3389 if (htab->got == NULL)
3391 if (htab->elf.dynobj == NULL)
3392 htab->elf.dynobj = abfd;
3393 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3398 h->got.refcount += 1;
3399 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3402 /* This is a global offset table entry for a local symbol. */
3403 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3407 /* Indirect .sdata relocation. */
3408 case R_PPC_EMB_SDAI16:
3411 bad_shared_reloc (abfd, r_type);
3414 if (htab->sdata[0].section == NULL
3415 && !ppc_elf_create_linker_section (abfd, info, 0,
3418 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3423 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3424 h->non_got_ref = TRUE;
3428 /* Indirect .sdata2 relocation. */
3429 case R_PPC_EMB_SDA2I16:
3432 bad_shared_reloc (abfd, r_type);
3435 if (htab->sdata[1].section == NULL
3436 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3439 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3444 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3445 h->non_got_ref = TRUE;
3449 case R_PPC_SDAREL16:
3452 bad_shared_reloc (abfd, r_type);
3455 if (htab->sdata[0].sym == NULL
3456 && !create_sdata_sym (htab, &htab->sdata[0]))
3460 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3461 h->non_got_ref = TRUE;
3465 case R_PPC_EMB_SDA2REL:
3468 bad_shared_reloc (abfd, r_type);
3471 if (htab->sdata[1].sym == NULL
3472 && !create_sdata_sym (htab, &htab->sdata[1]))
3476 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3477 h->non_got_ref = TRUE;
3481 case R_PPC_EMB_SDA21:
3482 case R_PPC_EMB_RELSDA:
3485 bad_shared_reloc (abfd, r_type);
3488 if (htab->sdata[0].sym == NULL
3489 && !create_sdata_sym (htab, &htab->sdata[0]))
3491 if (htab->sdata[1].sym == NULL
3492 && !create_sdata_sym (htab, &htab->sdata[1]))
3496 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3497 h->non_got_ref = TRUE;
3501 case R_PPC_EMB_NADDR32:
3502 case R_PPC_EMB_NADDR16:
3503 case R_PPC_EMB_NADDR16_LO:
3504 case R_PPC_EMB_NADDR16_HI:
3505 case R_PPC_EMB_NADDR16_HA:
3508 bad_shared_reloc (abfd, r_type);
3512 h->non_got_ref = TRUE;
3516 case R_PPC_PLTREL24:
3517 case R_PPC_PLTREL32:
3518 case R_PPC_PLT16_LO:
3519 case R_PPC_PLT16_HI:
3520 case R_PPC_PLT16_HA:
3522 fprintf (stderr, "Reloc requires a PLT entry\n");
3524 /* This symbol requires a procedure linkage table entry. We
3525 actually build the entry in finish_dynamic_symbol,
3526 because this might be a case of linking PIC code without
3527 linking in any dynamic objects, in which case we don't
3528 need to generate a procedure linkage table after all. */
3532 /* It does not make sense to have a procedure linkage
3533 table entry for a local symbol. */
3534 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3538 (long) rel->r_offset,
3539 ppc_elf_howto_table[r_type]->name);
3540 bfd_set_error (bfd_error_bad_value);
3547 if (r_type == R_PPC_PLTREL24)
3549 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3550 addend = rel->r_addend;
3553 if (!update_plt_info (abfd, h, got2, addend))
3558 /* The following relocations don't need to propagate the
3559 relocation if linking a shared object since they are
3560 section relative. */
3562 case R_PPC_SECTOFF_LO:
3563 case R_PPC_SECTOFF_HI:
3564 case R_PPC_SECTOFF_HA:
3565 case R_PPC_DTPREL16:
3566 case R_PPC_DTPREL16_LO:
3567 case R_PPC_DTPREL16_HI:
3568 case R_PPC_DTPREL16_HA:
3573 case R_PPC_REL16_LO:
3574 case R_PPC_REL16_HI:
3575 case R_PPC_REL16_HA:
3576 ppc_elf_tdata (abfd)->has_rel16 = 1;
3579 /* These are just markers. */
3581 case R_PPC_EMB_MRKREF:
3586 /* These should only appear in dynamic objects. */
3588 case R_PPC_GLOB_DAT:
3589 case R_PPC_JMP_SLOT:
3590 case R_PPC_RELATIVE:
3593 /* These aren't handled yet. We'll report an error later. */
3595 case R_PPC_EMB_RELSEC16:
3596 case R_PPC_EMB_RELST_LO:
3597 case R_PPC_EMB_RELST_HI:
3598 case R_PPC_EMB_RELST_HA:
3599 case R_PPC_EMB_BIT_FLD:
3602 /* This refers only to functions defined in the shared library. */
3603 case R_PPC_LOCAL24PC:
3604 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3606 htab->plt_type = PLT_OLD;
3607 htab->old_bfd = abfd;
3611 /* This relocation describes the C++ object vtable hierarchy.
3612 Reconstruct it for later use during GC. */
3613 case R_PPC_GNU_VTINHERIT:
3614 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3618 /* This relocation describes which C++ vtable entries are actually
3619 used. Record for later use during GC. */
3620 case R_PPC_GNU_VTENTRY:
3621 BFD_ASSERT (h != NULL);
3623 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3627 /* We shouldn't really be seeing these. */
3630 case R_PPC_TPREL16_LO:
3631 case R_PPC_TPREL16_HI:
3632 case R_PPC_TPREL16_HA:
3633 if (!info->executable)
3634 info->flags |= DF_STATIC_TLS;
3638 case R_PPC_DTPMOD32:
3639 case R_PPC_DTPREL32:
3645 && (sec->flags & SEC_CODE) != 0
3646 && (info->shared || info->pie)
3647 && htab->plt_type == PLT_UNSET)
3649 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3650 the start of a function, which assembles to a REL32
3651 reference to .got2. If we detect one of these, then
3652 force the old PLT layout because the linker cannot
3653 reliably deduce the GOT pointer value needed for
3657 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3661 htab->plt_type = PLT_OLD;
3662 htab->old_bfd = abfd;
3665 if (h == NULL || h == htab->elf.hgot)
3671 case R_PPC_ADDR16_LO:
3672 case R_PPC_ADDR16_HI:
3673 case R_PPC_ADDR16_HA:
3676 if (h != NULL && !info->shared)
3678 /* We may need a plt entry if the symbol turns out to be
3679 a function defined in a dynamic object. */
3680 if (!update_plt_info (abfd, h, NULL, 0))
3683 /* We may need a copy reloc too. */
3685 h->pointer_equality_needed = 1;
3691 case R_PPC_REL14_BRTAKEN:
3692 case R_PPC_REL14_BRNTAKEN:
3695 if (h == htab->elf.hgot)
3697 if (htab->plt_type == PLT_UNSET)
3699 htab->plt_type = PLT_OLD;
3700 htab->old_bfd = abfd;
3708 case R_PPC_ADDR14_BRTAKEN:
3709 case R_PPC_ADDR14_BRNTAKEN:
3710 if (h != NULL && !info->shared)
3712 /* We may need a plt entry if the symbol turns out to be
3713 a function defined in a dynamic object. */
3714 if (!update_plt_info (abfd, h, NULL, 0))
3720 /* If we are creating a shared library, and this is a reloc
3721 against a global symbol, or a non PC relative reloc
3722 against a local symbol, then we need to copy the reloc
3723 into the shared library. However, if we are linking with
3724 -Bsymbolic, we do not need to copy a reloc against a
3725 global symbol which is defined in an object we are
3726 including in the link (i.e., DEF_REGULAR is set). At
3727 this point we have not seen all the input files, so it is
3728 possible that DEF_REGULAR is not set now but will be set
3729 later (it is never cleared). In case of a weak definition,
3730 DEF_REGULAR may be cleared later by a strong definition in
3731 a shared library. We account for that possibility below by
3732 storing information in the dyn_relocs field of the hash
3733 table entry. A similar situation occurs when creating
3734 shared libraries and symbol visibility changes render the
3737 If on the other hand, we are creating an executable, we
3738 may need to keep relocations for symbols satisfied by a
3739 dynamic library if we manage to avoid copy relocs for the
3742 && (must_be_dyn_reloc (info, r_type)
3744 && (! info->symbolic
3745 || h->root.type == bfd_link_hash_defweak
3746 || !h->def_regular))))
3747 || (ELIMINATE_COPY_RELOCS
3750 && (h->root.type == bfd_link_hash_defweak
3751 || !h->def_regular)))
3753 struct ppc_elf_dyn_relocs *p;
3754 struct ppc_elf_dyn_relocs **head;
3758 "ppc_elf_check_relocs needs to "
3759 "create relocation for %s\n",
3760 (h && h->root.root.string
3761 ? h->root.root.string : "<unknown>"));
3767 name = (bfd_elf_string_from_elf_section
3769 elf_elfheader (abfd)->e_shstrndx,
3770 elf_section_data (sec)->rel_hdr.sh_name));
3774 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3775 && strcmp (bfd_get_section_name (abfd, sec),
3778 if (htab->elf.dynobj == NULL)
3779 htab->elf.dynobj = abfd;
3780 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3785 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3786 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3787 | SEC_ALLOC | SEC_LOAD);
3788 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3792 || ! bfd_set_section_alignment (htab->elf.dynobj,
3796 elf_section_data (sec)->sreloc = sreloc;
3799 /* If this is a global symbol, we count the number of
3800 relocations we need for this symbol. */
3803 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3807 /* Track dynamic relocs needed for local syms too.
3808 We really need local syms available to do this
3814 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3819 vpp = &elf_section_data (s)->local_dynrel;
3820 head = (struct ppc_elf_dyn_relocs **) vpp;
3824 if (p == NULL || p->sec != sec)
3826 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3837 if (!must_be_dyn_reloc (info, r_type))
3849 /* Merge object attributes from IBFD into OBFD. Raise an error if
3850 there are conflicting attributes. */
3852 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3854 obj_attribute *in_attr, *in_attrs;
3855 obj_attribute *out_attr, *out_attrs;
3857 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3859 /* This is the first object. Copy the attributes. */
3860 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3862 /* Use the Tag_null value to indicate the attributes have been
3864 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3869 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3870 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3872 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3873 non-conflicting ones. */
3874 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3875 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3876 if (in_attr->i != out_attr->i)
3879 if (out_attr->i == 0)
3880 out_attr->i = in_attr->i;
3881 else if (in_attr->i == 0)
3883 else if (out_attr->i == 1 && in_attr->i == 2)
3885 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3886 else if (out_attr->i == 2 && in_attr->i == 1)
3888 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3889 else if (in_attr->i > 2)
3891 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
3895 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
3899 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3900 merge non-conflicting ones. */
3901 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3902 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3903 if (in_attr->i != out_attr->i)
3905 const char *in_abi = NULL, *out_abi = NULL;
3909 case 1: in_abi = "generic"; break;
3910 case 2: in_abi = "AltiVec"; break;
3911 case 3: in_abi = "SPE"; break;
3914 switch (out_attr->i)
3916 case 1: out_abi = "generic"; break;
3917 case 2: out_abi = "AltiVec"; break;
3918 case 3: out_abi = "SPE"; break;
3922 if (out_attr->i == 0)
3923 out_attr->i = in_attr->i;
3924 else if (in_attr->i == 0)
3926 /* For now, allow generic to transition to AltiVec or SPE
3927 without a warning. If GCC marked files with their stack
3928 alignment and used don't-care markings for files which are
3929 not affected by the vector ABI, we could warn about this
3931 else if (out_attr->i == 1)
3932 out_attr->i = in_attr->i;
3933 else if (in_attr->i == 1)
3935 else if (in_abi == NULL)
3937 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3939 else if (out_abi == NULL)
3941 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3945 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3946 ibfd, obfd, in_abi, out_abi);
3949 /* Merge Tag_compatibility attributes and any common GNU ones. */
3950 _bfd_elf_merge_object_attributes (ibfd, obfd);
3955 /* Merge backend specific data from an object file to the output
3956 object file when linking. */
3959 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3965 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
3968 /* Check if we have the same endianess. */
3969 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3972 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3975 new_flags = elf_elfheader (ibfd)->e_flags;
3976 old_flags = elf_elfheader (obfd)->e_flags;
3977 if (!elf_flags_init (obfd))
3979 /* First call, no flags set. */
3980 elf_flags_init (obfd) = TRUE;
3981 elf_elfheader (obfd)->e_flags = new_flags;
3984 /* Compatible flags are ok. */
3985 else if (new_flags == old_flags)
3988 /* Incompatible flags. */
3991 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3992 to be linked with either. */
3994 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3995 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3998 (*_bfd_error_handler)
3999 (_("%B: compiled with -mrelocatable and linked with "
4000 "modules compiled normally"), ibfd);
4002 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4003 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4006 (*_bfd_error_handler)
4007 (_("%B: compiled normally and linked with "
4008 "modules compiled with -mrelocatable"), ibfd);
4011 /* The output is -mrelocatable-lib iff both the input files are. */
4012 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4013 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4015 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4016 but each input file is either -mrelocatable or -mrelocatable-lib. */
4017 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4018 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4019 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4020 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4022 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4023 any module uses it. */
4024 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4026 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4027 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4029 /* Warn about any other mismatches. */
4030 if (new_flags != old_flags)
4033 (*_bfd_error_handler)
4034 (_("%B: uses different e_flags (0x%lx) fields "
4035 "than previous modules (0x%lx)"),
4036 ibfd, (long) new_flags, (long) old_flags);
4041 bfd_set_error (bfd_error_bad_value);
4049 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4050 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4052 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4053 struct bfd_link_info *info,
4054 enum ppc_elf_plt_type plt_style,
4057 struct ppc_elf_link_hash_table *htab;
4060 htab = ppc_elf_hash_table (info);
4062 if (htab->plt_type == PLT_UNSET)
4064 if (plt_style == PLT_OLD)
4065 htab->plt_type = PLT_OLD;
4069 enum ppc_elf_plt_type plt_type = plt_style;
4071 /* Look through the reloc flags left by ppc_elf_check_relocs.
4072 Use the old style bss plt if a file makes plt calls
4073 without using the new relocs, and if ld isn't given
4074 --secure-plt and we never see REL16 relocs. */
4075 if (plt_type == PLT_UNSET)
4077 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4078 if (is_ppc_elf (ibfd))
4080 if (ppc_elf_tdata (ibfd)->has_rel16)
4082 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4085 htab->old_bfd = ibfd;
4089 htab->plt_type = plt_type;
4092 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4093 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4095 htab->emit_stub_syms = emit_stub_syms;
4097 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4099 if (htab->plt_type == PLT_NEW)
4101 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4102 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4104 /* The new PLT is a loaded section. */
4105 if (htab->plt != NULL
4106 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4109 /* The new GOT is not executable. */
4110 if (htab->got != NULL
4111 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4116 /* Stop an unused .glink section from affecting .text alignment. */
4117 if (htab->glink != NULL
4118 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4121 return htab->plt_type == PLT_NEW;
4124 /* Return the section that should be marked against GC for a given
4128 ppc_elf_gc_mark_hook (asection *sec,
4129 struct bfd_link_info *info,
4130 Elf_Internal_Rela *rel,
4131 struct elf_link_hash_entry *h,
4132 Elf_Internal_Sym *sym)
4135 switch (ELF32_R_TYPE (rel->r_info))
4137 case R_PPC_GNU_VTINHERIT:
4138 case R_PPC_GNU_VTENTRY:
4142 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4145 /* Update the got, plt and dynamic reloc reference counts for the
4146 section being removed. */
4149 ppc_elf_gc_sweep_hook (bfd *abfd,
4150 struct bfd_link_info *info,
4152 const Elf_Internal_Rela *relocs)
4154 struct ppc_elf_link_hash_table *htab;
4155 Elf_Internal_Shdr *symtab_hdr;
4156 struct elf_link_hash_entry **sym_hashes;
4157 bfd_signed_vma *local_got_refcounts;
4158 const Elf_Internal_Rela *rel, *relend;
4161 if (info->relocatable)
4164 if ((sec->flags & SEC_ALLOC) == 0)
4167 elf_section_data (sec)->local_dynrel = NULL;
4169 htab = ppc_elf_hash_table (info);
4170 symtab_hdr = &elf_symtab_hdr (abfd);
4171 sym_hashes = elf_sym_hashes (abfd);
4172 local_got_refcounts = elf_local_got_refcounts (abfd);
4173 got2 = bfd_get_section_by_name (abfd, ".got2");
4175 relend = relocs + sec->reloc_count;
4176 for (rel = relocs; rel < relend; rel++)
4178 unsigned long r_symndx;
4179 enum elf_ppc_reloc_type r_type;
4180 struct elf_link_hash_entry *h = NULL;
4182 r_symndx = ELF32_R_SYM (rel->r_info);
4183 if (r_symndx >= symtab_hdr->sh_info)
4185 struct ppc_elf_dyn_relocs **pp, *p;
4186 struct ppc_elf_link_hash_entry *eh;
4188 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4189 while (h->root.type == bfd_link_hash_indirect
4190 || h->root.type == bfd_link_hash_warning)
4191 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4192 eh = (struct ppc_elf_link_hash_entry *) h;
4194 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4197 /* Everything must go for SEC. */
4203 r_type = ELF32_R_TYPE (rel->r_info);
4206 case R_PPC_GOT_TLSLD16:
4207 case R_PPC_GOT_TLSLD16_LO:
4208 case R_PPC_GOT_TLSLD16_HI:
4209 case R_PPC_GOT_TLSLD16_HA:
4210 case R_PPC_GOT_TLSGD16:
4211 case R_PPC_GOT_TLSGD16_LO:
4212 case R_PPC_GOT_TLSGD16_HI:
4213 case R_PPC_GOT_TLSGD16_HA:
4214 case R_PPC_GOT_TPREL16:
4215 case R_PPC_GOT_TPREL16_LO:
4216 case R_PPC_GOT_TPREL16_HI:
4217 case R_PPC_GOT_TPREL16_HA:
4218 case R_PPC_GOT_DTPREL16:
4219 case R_PPC_GOT_DTPREL16_LO:
4220 case R_PPC_GOT_DTPREL16_HI:
4221 case R_PPC_GOT_DTPREL16_HA:
4223 case R_PPC_GOT16_LO:
4224 case R_PPC_GOT16_HI:
4225 case R_PPC_GOT16_HA:
4228 if (h->got.refcount > 0)
4231 else if (local_got_refcounts != NULL)
4233 if (local_got_refcounts[r_symndx] > 0)
4234 local_got_refcounts[r_symndx]--;
4240 case R_PPC_REL14_BRTAKEN:
4241 case R_PPC_REL14_BRNTAKEN:
4243 if (h == NULL || h == htab->elf.hgot)
4250 case R_PPC_ADDR16_LO:
4251 case R_PPC_ADDR16_HI:
4252 case R_PPC_ADDR16_HA:
4254 case R_PPC_ADDR14_BRTAKEN:
4255 case R_PPC_ADDR14_BRNTAKEN:
4262 case R_PPC_PLTREL24:
4263 case R_PPC_PLTREL32:
4264 case R_PPC_PLT16_LO:
4265 case R_PPC_PLT16_HI:
4266 case R_PPC_PLT16_HA:
4269 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4270 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4271 if (ent->plt.refcount > 0)
4272 ent->plt.refcount -= 1;
4283 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4286 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4288 struct ppc_elf_link_hash_table *htab;
4290 htab = ppc_elf_hash_table (info);
4291 if (htab->plt_type == PLT_NEW
4292 && htab->plt != NULL
4293 && htab->plt->output_section != NULL)
4295 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4296 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4299 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4300 FALSE, FALSE, TRUE);
4301 return _bfd_elf_tls_setup (obfd, info);
4304 /* Run through all the TLS relocs looking for optimization
4308 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4309 struct bfd_link_info *info)
4313 struct ppc_elf_link_hash_table *htab;
4316 if (info->relocatable || !info->executable)
4319 htab = ppc_elf_hash_table (info);
4320 /* Make two passes through the relocs. First time check that tls
4321 relocs involved in setting up a tls_get_addr call are indeed
4322 followed by such a call. If they are not, exclude them from
4323 the optimizations done on the second pass. */
4324 for (pass = 0; pass < 2; ++pass)
4325 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4327 Elf_Internal_Sym *locsyms = NULL;
4328 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4330 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4331 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4333 Elf_Internal_Rela *relstart, *rel, *relend;
4335 /* Read the relocations. */
4336 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4338 if (relstart == NULL)
4341 relend = relstart + sec->reloc_count;
4342 for (rel = relstart; rel < relend; rel++)
4344 enum elf_ppc_reloc_type r_type;
4345 unsigned long r_symndx;
4346 struct elf_link_hash_entry *h = NULL;
4348 char tls_set, tls_clear;
4349 bfd_boolean is_local;
4350 int expecting_tls_get_addr;
4351 bfd_signed_vma *got_count;
4353 r_symndx = ELF32_R_SYM (rel->r_info);
4354 if (r_symndx >= symtab_hdr->sh_info)
4356 struct elf_link_hash_entry **sym_hashes;
4358 sym_hashes = elf_sym_hashes (ibfd);
4359 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4360 while (h->root.type == bfd_link_hash_indirect
4361 || h->root.type == bfd_link_hash_warning)
4362 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4365 expecting_tls_get_addr = 0;
4371 r_type = ELF32_R_TYPE (rel->r_info);
4374 case R_PPC_GOT_TLSLD16:
4375 case R_PPC_GOT_TLSLD16_LO:
4376 expecting_tls_get_addr = 1;
4379 case R_PPC_GOT_TLSLD16_HI:
4380 case R_PPC_GOT_TLSLD16_HA:
4381 /* These relocs should never be against a symbol
4382 defined in a shared lib. Leave them alone if
4383 that turns out to be the case. */
4392 case R_PPC_GOT_TLSGD16:
4393 case R_PPC_GOT_TLSGD16_LO:
4394 expecting_tls_get_addr = 1;
4397 case R_PPC_GOT_TLSGD16_HI:
4398 case R_PPC_GOT_TLSGD16_HA:
4404 tls_set = TLS_TLS | TLS_TPRELGD;
4408 case R_PPC_GOT_TPREL16:
4409 case R_PPC_GOT_TPREL16_LO:
4410 case R_PPC_GOT_TPREL16_HI:
4411 case R_PPC_GOT_TPREL16_HA:
4416 tls_clear = TLS_TPREL;
4428 if (!expecting_tls_get_addr)
4431 if (rel + 1 < relend)
4433 enum elf_ppc_reloc_type r_type2;
4434 unsigned long r_symndx2;
4435 struct elf_link_hash_entry *h2;
4437 /* The next instruction should be a call to
4438 __tls_get_addr. Peek at the reloc to be sure. */
4439 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4440 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4441 if (r_symndx2 >= symtab_hdr->sh_info
4442 && (r_type2 == R_PPC_REL14
4443 || r_type2 == R_PPC_REL14_BRTAKEN
4444 || r_type2 == R_PPC_REL14_BRNTAKEN
4445 || r_type2 == R_PPC_REL24
4446 || r_type2 == R_PPC_PLTREL24))
4448 struct elf_link_hash_entry **sym_hashes;
4450 sym_hashes = elf_sym_hashes (ibfd);
4451 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4452 while (h2->root.type == bfd_link_hash_indirect
4453 || h2->root.type == bfd_link_hash_warning)
4454 h2 = ((struct elf_link_hash_entry *)
4456 if (h2 == htab->tls_get_addr)
4461 /* Uh oh, we didn't find the expected call. We
4462 could just mark this symbol to exclude it
4463 from tls optimization but it's safer to skip
4464 the entire section. */
4465 sec->has_tls_reloc = 0;
4471 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4472 got_count = &h->got.refcount;
4476 Elf_Internal_Sym *sym;
4477 bfd_signed_vma *lgot_refs;
4480 if (locsyms == NULL)
4482 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4483 if (locsyms == NULL)
4484 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4485 symtab_hdr->sh_info,
4486 0, NULL, NULL, NULL);
4487 if (locsyms == NULL)
4489 if (elf_section_data (sec)->relocs != relstart)
4494 sym = locsyms + r_symndx;
4495 lgot_refs = elf_local_got_refcounts (ibfd);
4496 if (lgot_refs == NULL)
4498 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4499 tls_mask = &lgot_masks[r_symndx];
4500 got_count = &lgot_refs[r_symndx];
4505 /* We managed to get rid of a got entry. */
4510 if (expecting_tls_get_addr)
4512 struct plt_entry *ent;
4514 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4515 if (ent != NULL && ent->plt.refcount > 0)
4516 ent->plt.refcount -= 1;
4519 *tls_mask |= tls_set;
4520 *tls_mask &= ~tls_clear;
4523 if (elf_section_data (sec)->relocs != relstart)
4528 && (symtab_hdr->contents != (unsigned char *) locsyms))
4530 if (!info->keep_memory)
4533 symtab_hdr->contents = (unsigned char *) locsyms;
4539 /* Return true if we have dynamic relocs that apply to read-only sections. */
4542 readonly_dynrelocs (struct elf_link_hash_entry *h)
4544 struct ppc_elf_dyn_relocs *p;
4546 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4548 asection *s = p->sec->output_section;
4551 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4552 == (SEC_READONLY | SEC_ALLOC)))
4558 /* Adjust a symbol defined by a dynamic object and referenced by a
4559 regular object. The current definition is in some section of the
4560 dynamic object, but we're not including those sections. We have to
4561 change the definition to something the rest of the link can
4565 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4566 struct elf_link_hash_entry *h)
4568 struct ppc_elf_link_hash_table *htab;
4572 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4573 h->root.root.string);
4576 /* Make sure we know what is going on here. */
4577 htab = ppc_elf_hash_table (info);
4578 BFD_ASSERT (htab->elf.dynobj != NULL
4580 || h->u.weakdef != NULL
4583 && !h->def_regular)));
4585 /* Deal with function syms. */
4586 if (h->type == STT_FUNC
4589 /* Clear procedure linkage table information for any symbol that
4590 won't need a .plt entry. */
4591 struct plt_entry *ent;
4592 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4593 if (ent->plt.refcount > 0)
4596 || SYMBOL_CALLS_LOCAL (info, h)
4597 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4598 && h->root.type == bfd_link_hash_undefweak))
4600 /* A PLT entry is not required/allowed when:
4602 1. We are not using ld.so; because then the PLT entry
4603 can't be set up, so we can't use one. In this case,
4604 ppc_elf_adjust_dynamic_symbol won't even be called.
4606 2. GC has rendered the entry unused.
4608 3. We know for certain that a call to this symbol
4609 will go to this object, or will remain undefined. */
4610 h->plt.plist = NULL;
4615 /* After adjust_dynamic_symbol, non_got_ref set means that
4616 dyn_relocs for this symbol should be discarded.
4617 If we get here we know we are making a PLT entry for this
4618 symbol, and in an executable we'd normally resolve
4619 relocations against this symbol to the PLT entry. Allow
4620 dynamic relocs if the reference is weak, and the dynamic
4621 relocs will not cause text relocation. */
4622 if (!h->ref_regular_nonweak
4624 && !htab->is_vxworks
4625 && !ppc_elf_hash_entry (h)->has_sda_refs
4626 && !readonly_dynrelocs (h))
4632 h->plt.plist = NULL;
4634 /* If this is a weak symbol, and there is a real definition, the
4635 processor independent code will have arranged for us to see the
4636 real definition first, and we can just use the same value. */
4637 if (h->u.weakdef != NULL)
4639 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4640 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4641 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4642 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4643 if (ELIMINATE_COPY_RELOCS)
4644 h->non_got_ref = h->u.weakdef->non_got_ref;
4648 /* This is a reference to a symbol defined by a dynamic object which
4649 is not a function. */
4651 /* If we are creating a shared library, we must presume that the
4652 only references to the symbol are via the global offset table.
4653 For such cases we need not do anything here; the relocations will
4654 be handled correctly by relocate_section. */
4658 /* If there are no references to this symbol that do not use the
4659 GOT, we don't need to generate a copy reloc. */
4660 if (!h->non_got_ref)
4663 /* If we didn't find any dynamic relocs in read-only sections, then
4664 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4665 We can't do this if there are any small data relocations. This
4666 doesn't work on VxWorks, where we can not have dynamic
4667 relocations (other than copy and jump slot relocations) in an
4669 if (ELIMINATE_COPY_RELOCS
4670 && !ppc_elf_hash_entry (h)->has_sda_refs
4671 && !htab->is_vxworks
4673 && !readonly_dynrelocs (h))
4681 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4682 h->root.root.string);
4686 /* We must allocate the symbol in our .dynbss section, which will
4687 become part of the .bss section of the executable. There will be
4688 an entry for this symbol in the .dynsym section. The dynamic
4689 object will contain position independent code, so all references
4690 from the dynamic object to this symbol will go through the global
4691 offset table. The dynamic linker will use the .dynsym entry to
4692 determine the address it must put in the global offset table, so
4693 both the dynamic object and the regular object will refer to the
4694 same memory location for the variable.
4696 Of course, if the symbol is referenced using SDAREL relocs, we
4697 must instead allocate it in .sbss. */
4699 if (ppc_elf_hash_entry (h)->has_sda_refs)
4703 BFD_ASSERT (s != NULL);
4705 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4706 copy the initial value out of the dynamic object and into the
4707 runtime process image. We need to remember the offset into the
4708 .rela.bss section we are going to use. */
4709 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4713 if (ppc_elf_hash_entry (h)->has_sda_refs)
4714 srel = htab->relsbss;
4716 srel = htab->relbss;
4717 BFD_ASSERT (srel != NULL);
4718 srel->size += sizeof (Elf32_External_Rela);
4722 return _bfd_elf_adjust_dynamic_copy (h, s);
4725 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4726 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4727 specifying the addend on the plt relocation. For -fpic code, the sym
4728 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4729 xxxxxxxx.got2.plt_pic32.<callee>. */
4732 add_stub_sym (struct plt_entry *ent,
4733 struct elf_link_hash_entry *h,
4734 struct bfd_link_info *info)
4736 struct elf_link_hash_entry *sh;
4737 size_t len1, len2, len3;
4740 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4742 if (info->shared || info->pie)
4743 stub = ".plt_pic32.";
4745 stub = ".plt_call32.";
4747 len1 = strlen (h->root.root.string);
4748 len2 = strlen (stub);
4751 len3 = strlen (ent->sec->name);
4752 name = bfd_malloc (len1 + len2 + len3 + 9);
4755 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4757 memcpy (name + 8, ent->sec->name, len3);
4758 memcpy (name + 8 + len3, stub, len2);
4759 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4760 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4763 if (sh->root.type == bfd_link_hash_new)
4765 sh->root.type = bfd_link_hash_defined;
4766 sh->root.u.def.section = htab->glink;
4767 sh->root.u.def.value = ent->glink_offset;
4768 sh->ref_regular = 1;
4769 sh->def_regular = 1;
4770 sh->ref_regular_nonweak = 1;
4771 sh->forced_local = 1;
4777 /* Allocate NEED contiguous space in .got, and return the offset.
4778 Handles allocation of the got header when crossing 32k. */
4781 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4784 unsigned int max_before_header;
4786 if (htab->plt_type == PLT_VXWORKS)
4788 where = htab->got->size;
4789 htab->got->size += need;
4793 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4794 if (need <= htab->got_gap)
4796 where = max_before_header - htab->got_gap;
4797 htab->got_gap -= need;
4801 if (htab->got->size + need > max_before_header
4802 && htab->got->size <= max_before_header)
4804 htab->got_gap = max_before_header - htab->got->size;
4805 htab->got->size = max_before_header + htab->got_header_size;
4807 where = htab->got->size;
4808 htab->got->size += need;
4814 /* Allocate space in associated reloc sections for dynamic relocs. */
4817 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4819 struct bfd_link_info *info = inf;
4820 struct ppc_elf_link_hash_entry *eh;
4821 struct ppc_elf_link_hash_table *htab;
4822 struct ppc_elf_dyn_relocs *p;
4824 if (h->root.type == bfd_link_hash_indirect)
4827 if (h->root.type == bfd_link_hash_warning)
4828 /* When warning symbols are created, they **replace** the "real"
4829 entry in the hash table, thus we never get to see the real
4830 symbol in a hash traversal. So look at it now. */
4831 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4833 htab = ppc_elf_hash_table (info);
4834 if (htab->elf.dynamic_sections_created)
4836 struct plt_entry *ent;
4837 bfd_boolean doneone = FALSE;
4838 bfd_vma plt_offset = 0, glink_offset = 0;
4840 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4841 if (ent->plt.refcount > 0)
4843 /* Make sure this symbol is output as a dynamic symbol. */
4844 if (h->dynindx == -1
4845 && !h->forced_local)
4847 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4852 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4854 asection *s = htab->plt;
4856 if (htab->plt_type == PLT_NEW)
4860 plt_offset = s->size;
4863 ent->plt.offset = plt_offset;
4866 if (!doneone || info->shared || info->pie)
4868 glink_offset = s->size;
4869 s->size += GLINK_ENTRY_SIZE;
4876 h->root.u.def.section = s;
4877 h->root.u.def.value = glink_offset;
4879 ent->glink_offset = glink_offset;
4881 if (htab->emit_stub_syms
4882 && !add_stub_sym (ent, h, info))
4889 /* If this is the first .plt entry, make room
4890 for the special first entry. */
4892 s->size += htab->plt_initial_entry_size;
4894 /* The PowerPC PLT is actually composed of two
4895 parts, the first part is 2 words (for a load
4896 and a jump), and then there is a remaining
4897 word available at the end. */
4898 plt_offset = (htab->plt_initial_entry_size
4899 + (htab->plt_slot_size
4901 - htab->plt_initial_entry_size)
4902 / htab->plt_entry_size)));
4904 /* If this symbol is not defined in a regular
4905 file, and we are not generating a shared
4906 library, then set the symbol to this location
4907 in the .plt. This is required to make
4908 function pointers compare as equal between
4909 the normal executable and the shared library. */
4914 h->root.u.def.section = s;
4915 h->root.u.def.value = plt_offset;
4918 /* Make room for this entry. */
4919 s->size += htab->plt_entry_size;
4920 /* After the 8192nd entry, room for two entries
4922 if (htab->plt_type == PLT_OLD
4923 && (s->size - htab->plt_initial_entry_size)
4924 / htab->plt_entry_size
4925 > PLT_NUM_SINGLE_ENTRIES)
4926 s->size += htab->plt_entry_size;
4928 ent->plt.offset = plt_offset;
4931 /* We also need to make an entry in the .rela.plt section. */
4934 htab->relplt->size += sizeof (Elf32_External_Rela);
4936 if (htab->plt_type == PLT_VXWORKS)
4938 /* Allocate space for the unloaded relocations. */
4942 == (bfd_vma) htab->plt_initial_entry_size)
4944 htab->srelplt2->size
4945 += sizeof (Elf32_External_Rela)
4946 * VXWORKS_PLTRESOLVE_RELOCS;
4949 htab->srelplt2->size
4950 += sizeof (Elf32_External_Rela)
4951 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4954 /* Every PLT entry has an associated GOT entry in
4956 htab->sgotplt->size += 4;
4962 ent->plt.offset = (bfd_vma) -1;
4965 ent->plt.offset = (bfd_vma) -1;
4969 h->plt.plist = NULL;
4975 h->plt.plist = NULL;
4979 eh = (struct ppc_elf_link_hash_entry *) h;
4980 if (eh->elf.got.refcount > 0)
4982 /* Make sure this symbol is output as a dynamic symbol. */
4983 if (eh->elf.dynindx == -1
4984 && !eh->elf.forced_local)
4986 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4990 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4991 && !eh->elf.def_dynamic)
4993 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4994 htab->tlsld_got.refcount += 1;
4995 eh->elf.got.offset = (bfd_vma) -1;
5000 unsigned int need = 0;
5001 if ((eh->tls_mask & TLS_TLS) != 0)
5003 if ((eh->tls_mask & TLS_LD) != 0)
5005 if ((eh->tls_mask & TLS_GD) != 0)
5007 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5009 if ((eh->tls_mask & TLS_DTPREL) != 0)
5014 eh->elf.got.offset = allocate_got (htab, need);
5015 dyn = htab->elf.dynamic_sections_created;
5017 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5018 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5019 || eh->elf.root.type != bfd_link_hash_undefweak))
5021 /* All the entries we allocated need relocs.
5022 Except LD only needs one. */
5023 if ((eh->tls_mask & TLS_LD) != 0)
5025 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
5030 eh->elf.got.offset = (bfd_vma) -1;
5032 if (eh->dyn_relocs == NULL)
5035 /* In the shared -Bsymbolic case, discard space allocated for
5036 dynamic pc-relative relocs against symbols which turn out to be
5037 defined in regular objects. For the normal shared case, discard
5038 space for relocs that have become local due to symbol visibility
5043 /* Relocs that use pc_count are those that appear on a call insn,
5044 or certain REL relocs (see must_be_dyn_reloc) that can be
5045 generated via assembly. We want calls to protected symbols to
5046 resolve directly to the function rather than going via the plt.
5047 If people want function pointer comparisons to work as expected
5048 then they should avoid writing weird assembly. */
5049 if (SYMBOL_CALLS_LOCAL (info, h))
5051 struct ppc_elf_dyn_relocs **pp;
5053 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5055 p->count -= p->pc_count;
5064 if (htab->is_vxworks)
5066 struct ppc_elf_dyn_relocs **pp;
5068 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5070 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5077 /* Discard relocs on undefined symbols that must be local. */
5078 if (eh->dyn_relocs != NULL
5079 && h->root.type == bfd_link_hash_undefined
5080 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5081 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5082 eh->dyn_relocs = NULL;
5084 /* Also discard relocs on undefined weak syms with non-default
5086 if (eh->dyn_relocs != NULL
5087 && h->root.type == bfd_link_hash_undefweak)
5089 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5090 eh->dyn_relocs = NULL;
5092 /* Make sure undefined weak symbols are output as a dynamic
5094 else if (h->dynindx == -1
5095 && !h->forced_local)
5097 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5102 else if (ELIMINATE_COPY_RELOCS)
5104 /* For the non-shared case, discard space for relocs against
5105 symbols which turn out to need copy relocs or are not
5111 /* Make sure this symbol is output as a dynamic symbol.
5112 Undefined weak syms won't yet be marked as dynamic. */
5113 if (h->dynindx == -1
5114 && !h->forced_local)
5116 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5120 /* If that succeeded, we know we'll be keeping all the
5122 if (h->dynindx != -1)
5126 eh->dyn_relocs = NULL;
5131 /* Finally, allocate space. */
5132 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5134 asection *sreloc = elf_section_data (p->sec)->sreloc;
5135 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5141 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5142 read-only sections. */
5145 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5147 if (h->root.type == bfd_link_hash_indirect)
5150 if (h->root.type == bfd_link_hash_warning)
5151 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5153 if (readonly_dynrelocs (h))
5155 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5157 /* Not an error, just cut short the traversal. */
5163 /* Set the sizes of the dynamic sections. */
5166 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5167 struct bfd_link_info *info)
5169 struct ppc_elf_link_hash_table *htab;
5175 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5178 htab = ppc_elf_hash_table (info);
5179 BFD_ASSERT (htab->elf.dynobj != NULL);
5181 if (elf_hash_table (info)->dynamic_sections_created)
5183 /* Set the contents of the .interp section to the interpreter. */
5184 if (info->executable)
5186 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5187 BFD_ASSERT (s != NULL);
5188 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5189 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5193 if (htab->plt_type == PLT_OLD)
5194 htab->got_header_size = 16;
5195 else if (htab->plt_type == PLT_NEW)
5196 htab->got_header_size = 12;
5198 /* Set up .got offsets for local syms, and space for local dynamic
5200 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5202 bfd_signed_vma *local_got;
5203 bfd_signed_vma *end_local_got;
5205 bfd_size_type locsymcount;
5206 Elf_Internal_Shdr *symtab_hdr;
5208 if (!is_ppc_elf (ibfd))
5211 for (s = ibfd->sections; s != NULL; s = s->next)
5213 struct ppc_elf_dyn_relocs *p;
5215 for (p = ((struct ppc_elf_dyn_relocs *)
5216 elf_section_data (s)->local_dynrel);
5220 if (!bfd_is_abs_section (p->sec)
5221 && bfd_is_abs_section (p->sec->output_section))
5223 /* Input section has been discarded, either because
5224 it is a copy of a linkonce section or due to
5225 linker script /DISCARD/, so we'll be discarding
5228 else if (htab->is_vxworks
5229 && strcmp (p->sec->output_section->name,
5232 /* Relocations in vxworks .tls_vars sections are
5233 handled specially by the loader. */
5235 else if (p->count != 0)
5237 elf_section_data (p->sec)->sreloc->size
5238 += p->count * sizeof (Elf32_External_Rela);
5239 if ((p->sec->output_section->flags
5240 & (SEC_READONLY | SEC_ALLOC))
5241 == (SEC_READONLY | SEC_ALLOC))
5242 info->flags |= DF_TEXTREL;
5247 local_got = elf_local_got_refcounts (ibfd);
5251 symtab_hdr = &elf_symtab_hdr (ibfd);
5252 locsymcount = symtab_hdr->sh_info;
5253 end_local_got = local_got + locsymcount;
5254 lgot_masks = (char *) end_local_got;
5255 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5258 if (*lgot_masks == (TLS_TLS | TLS_LD))
5260 /* If just an LD reloc, we'll just use
5261 htab->tlsld_got.offset. */
5262 htab->tlsld_got.refcount += 1;
5263 *local_got = (bfd_vma) -1;
5267 unsigned int need = 0;
5268 if ((*lgot_masks & TLS_TLS) != 0)
5270 if ((*lgot_masks & TLS_GD) != 0)
5272 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5274 if ((*lgot_masks & TLS_DTPREL) != 0)
5279 *local_got = allocate_got (htab, need);
5281 htab->relgot->size += (need
5282 * (sizeof (Elf32_External_Rela) / 4));
5286 *local_got = (bfd_vma) -1;
5289 /* Allocate space for global sym dynamic relocs. */
5290 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5292 if (htab->tlsld_got.refcount > 0)
5294 htab->tlsld_got.offset = allocate_got (htab, 8);
5296 htab->relgot->size += sizeof (Elf32_External_Rela);
5299 htab->tlsld_got.offset = (bfd_vma) -1;
5301 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5303 unsigned int g_o_t = 32768;
5305 /* If we haven't allocated the header, do so now. When we get here,
5306 for old plt/got the got size will be 0 to 32764 (not allocated),
5307 or 32780 to 65536 (header allocated). For new plt/got, the
5308 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5309 if (htab->got->size <= 32768)
5311 g_o_t = htab->got->size;
5312 if (htab->plt_type == PLT_OLD)
5314 htab->got->size += htab->got_header_size;
5317 htab->elf.hgot->root.u.def.value = g_o_t;
5320 if (htab->glink != NULL && htab->glink->size != 0)
5322 htab->glink_pltresolve = htab->glink->size;
5323 /* Space for the branch table. */
5324 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5325 /* Pad out to align the start of PLTresolve. */
5326 htab->glink->size += -htab->glink->size & 15;
5327 htab->glink->size += GLINK_PLTRESOLVE;
5329 if (htab->emit_stub_syms)
5331 struct elf_link_hash_entry *sh;
5332 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5333 TRUE, FALSE, FALSE);
5336 if (sh->root.type == bfd_link_hash_new)
5338 sh->root.type = bfd_link_hash_defined;
5339 sh->root.u.def.section = htab->glink;
5340 sh->root.u.def.value = htab->glink_pltresolve;
5341 sh->ref_regular = 1;
5342 sh->def_regular = 1;
5343 sh->ref_regular_nonweak = 1;
5344 sh->forced_local = 1;
5347 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5348 TRUE, FALSE, FALSE);
5351 if (sh->root.type == bfd_link_hash_new)
5353 sh->root.type = bfd_link_hash_defined;
5354 sh->root.u.def.section = htab->glink;
5355 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5356 sh->ref_regular = 1;
5357 sh->def_regular = 1;
5358 sh->ref_regular_nonweak = 1;
5359 sh->forced_local = 1;
5365 /* We've now determined the sizes of the various dynamic sections.
5366 Allocate memory for them. */
5368 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5370 bfd_boolean strip_section = TRUE;
5372 if ((s->flags & SEC_LINKER_CREATED) == 0)
5378 || s == htab->sgotplt
5380 || s == htab->dynbss
5381 || s == htab->dynsbss)
5383 /* We'd like to strip these sections if they aren't needed, but if
5384 we've exported dynamic symbols from them we must leave them.
5385 It's too late to tell BFD to get rid of the symbols. */
5386 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5387 strip_section = FALSE;
5388 /* Strip this section if we don't need it; see the
5391 else if (s == htab->sdata[0].section
5392 || s == htab->sdata[1].section)
5394 /* Strip these too. */
5396 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5400 /* Remember whether there are any relocation sections. */
5403 /* We use the reloc_count field as a counter if we need
5404 to copy relocs into the output file. */
5410 /* It's not one of our sections, so don't allocate space. */
5414 if (s->size == 0 && strip_section)
5416 /* If we don't need this section, strip it from the
5417 output file. This is mostly to handle .rela.bss and
5418 .rela.plt. We must create both sections in
5419 create_dynamic_sections, because they must be created
5420 before the linker maps input sections to output
5421 sections. The linker does that before
5422 adjust_dynamic_symbol is called, and it is that
5423 function which decides whether anything needs to go
5424 into these sections. */
5425 s->flags |= SEC_EXCLUDE;
5429 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5432 /* Allocate memory for the section contents. */
5433 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5434 if (s->contents == NULL)
5438 if (htab->elf.dynamic_sections_created)
5440 /* Add some entries to the .dynamic section. We fill in the
5441 values later, in ppc_elf_finish_dynamic_sections, but we
5442 must add the entries now so that we get the correct size for
5443 the .dynamic section. The DT_DEBUG entry is filled in by the
5444 dynamic linker and used by the debugger. */
5445 #define add_dynamic_entry(TAG, VAL) \
5446 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5448 if (info->executable)
5450 if (!add_dynamic_entry (DT_DEBUG, 0))
5454 if (htab->plt != NULL && htab->plt->size != 0)
5456 if (!add_dynamic_entry (DT_PLTGOT, 0)
5457 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5458 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5459 || !add_dynamic_entry (DT_JMPREL, 0))
5463 if (htab->glink != NULL && htab->glink->size != 0)
5465 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5471 if (!add_dynamic_entry (DT_RELA, 0)
5472 || !add_dynamic_entry (DT_RELASZ, 0)
5473 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5477 /* If any dynamic relocs apply to a read-only section, then we
5478 need a DT_TEXTREL entry. */
5479 if ((info->flags & DF_TEXTREL) == 0)
5480 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5483 if ((info->flags & DF_TEXTREL) != 0)
5485 if (!add_dynamic_entry (DT_TEXTREL, 0))
5488 if (htab->is_vxworks
5489 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5492 #undef add_dynamic_entry
5497 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5500 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5502 if (h->plt.plist != NULL
5504 && (!h->pointer_equality_needed
5505 || !h->ref_regular_nonweak))
5508 return _bfd_elf_hash_symbol (h);
5511 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5513 static const int shared_stub_entry[] =
5515 0x7c0802a6, /* mflr 0 */
5516 0x429f0005, /* bcl 20, 31, .Lxxx */
5517 0x7d6802a6, /* mflr 11 */
5518 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5519 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5520 0x7c0803a6, /* mtlr 0 */
5521 0x7d6903a6, /* mtctr 11 */
5522 0x4e800420, /* bctr */
5525 static const int stub_entry[] =
5527 0x3d600000, /* lis 11,xxx@ha */
5528 0x396b0000, /* addi 11,11,xxx@l */
5529 0x7d6903a6, /* mtctr 11 */
5530 0x4e800420, /* bctr */
5534 ppc_elf_relax_section (bfd *abfd,
5536 struct bfd_link_info *link_info,
5541 struct one_fixup *next;
5547 Elf_Internal_Shdr *symtab_hdr;
5548 bfd_byte *contents = NULL;
5549 Elf_Internal_Sym *isymbuf = NULL;
5550 Elf_Internal_Rela *internal_relocs = NULL;
5551 Elf_Internal_Rela *irel, *irelend;
5552 struct one_fixup *fixups = NULL;
5553 bfd_boolean changed;
5554 struct ppc_elf_link_hash_table *htab;
5555 bfd_size_type trampoff;
5560 /* Nothing to do if there are no relocations, and no need to do
5561 anything with non-alloc sections. */
5562 if ((isec->flags & SEC_ALLOC) == 0
5563 || (isec->flags & SEC_RELOC) == 0
5564 || isec->reloc_count == 0)
5567 trampoff = (isec->size + 3) & (bfd_vma) -4;
5568 /* Space for a branch around any trampolines. */
5571 symtab_hdr = &elf_symtab_hdr (abfd);
5573 /* Get a copy of the native relocations. */
5574 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5575 link_info->keep_memory);
5576 if (internal_relocs == NULL)
5579 htab = ppc_elf_hash_table (link_info);
5580 got2 = bfd_get_section_by_name (abfd, ".got2");
5582 irelend = internal_relocs + isec->reloc_count;
5583 for (irel = internal_relocs; irel < irelend; irel++)
5585 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5586 bfd_vma symaddr, reladdr, toff, roff;
5588 struct one_fixup *f;
5589 size_t insn_offset = 0;
5590 bfd_vma max_branch_offset, val;
5593 unsigned char sym_type;
5598 case R_PPC_LOCAL24PC:
5599 case R_PPC_PLTREL24:
5600 max_branch_offset = 1 << 25;
5604 case R_PPC_REL14_BRTAKEN:
5605 case R_PPC_REL14_BRNTAKEN:
5606 max_branch_offset = 1 << 15;
5613 /* Get the value of the symbol referred to by the reloc. */
5614 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5616 /* A local symbol. */
5617 Elf_Internal_Sym *isym;
5619 /* Read this BFD's local symbols. */
5620 if (isymbuf == NULL)
5622 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5623 if (isymbuf == NULL)
5624 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5625 symtab_hdr->sh_info, 0,
5630 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5631 if (isym->st_shndx == SHN_UNDEF)
5632 continue; /* We can't do anything with undefined symbols. */
5633 else if (isym->st_shndx == SHN_ABS)
5634 tsec = bfd_abs_section_ptr;
5635 else if (isym->st_shndx == SHN_COMMON)
5636 tsec = bfd_com_section_ptr;
5638 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5640 toff = isym->st_value;
5641 sym_type = ELF_ST_TYPE (isym->st_info);
5645 /* Global symbol handling. */
5647 struct elf_link_hash_entry *h;
5649 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5650 h = elf_sym_hashes (abfd)[indx];
5652 while (h->root.type == bfd_link_hash_indirect
5653 || h->root.type == bfd_link_hash_warning)
5654 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5658 if (r_type == R_PPC_PLTREL24
5659 && htab->plt != NULL)
5661 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5665 if (htab->plt_type == PLT_NEW)
5668 toff = ent->glink_offset;
5673 toff = ent->plt.offset;
5679 else if (h->root.type == bfd_link_hash_defined
5680 || h->root.type == bfd_link_hash_defweak)
5682 tsec = h->root.u.def.section;
5683 toff = h->root.u.def.value;
5691 /* If the branch and target are in the same section, you have
5692 no hope of adding stubs. We'll error out later should the
5697 /* There probably isn't any reason to handle symbols in
5698 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5699 attribute for a code section, and we are only looking at
5700 branches. However, implement it correctly here as a
5701 reference for other target relax_section functions. */
5702 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5704 /* At this stage in linking, no SEC_MERGE symbol has been
5705 adjusted, so all references to such symbols need to be
5706 passed through _bfd_merged_section_offset. (Later, in
5707 relocate_section, all SEC_MERGE symbols *except* for
5708 section symbols have been adjusted.)
5710 gas may reduce relocations against symbols in SEC_MERGE
5711 sections to a relocation against the section symbol when
5712 the original addend was zero. When the reloc is against
5713 a section symbol we should include the addend in the
5714 offset passed to _bfd_merged_section_offset, since the
5715 location of interest is the original symbol. On the
5716 other hand, an access to "sym+addend" where "sym" is not
5717 a section symbol should not include the addend; Such an
5718 access is presumed to be an offset from "sym"; The
5719 location of interest is just "sym". */
5720 if (sym_type == STT_SECTION)
5721 toff += irel->r_addend;
5723 toff = _bfd_merged_section_offset (abfd, &tsec,
5724 elf_section_data (tsec)->sec_info,
5727 if (sym_type != STT_SECTION)
5728 toff += irel->r_addend;
5730 /* PLTREL24 addends are special. */
5731 else if (r_type != R_PPC_PLTREL24)
5732 toff += irel->r_addend;
5734 /* Attempted -shared link of non-pic code loses. */
5735 if (tsec->output_section == NULL)
5738 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5740 roff = irel->r_offset;
5741 reladdr = isec->output_section->vma + isec->output_offset + roff;
5743 /* If the branch is in range, no need to do anything. */
5744 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5747 /* Look for an existing fixup to this address. */
5748 for (f = fixups; f ; f = f->next)
5749 if (f->tsec == tsec && f->toff == toff)
5755 unsigned long stub_rtype;
5757 val = trampoff - roff;
5758 if (val >= max_branch_offset)
5759 /* Oh dear, we can't reach a trampoline. Don't try to add
5760 one. We'll report an error later. */
5763 if (link_info->shared)
5765 size = 4 * ARRAY_SIZE (shared_stub_entry);
5767 stub_rtype = R_PPC_RELAX32PC;
5771 size = 4 * ARRAY_SIZE (stub_entry);
5773 stub_rtype = R_PPC_RELAX32;
5776 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5777 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5779 if (tsec == htab->plt
5780 || tsec == htab->glink)
5781 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5783 /* Hijack the old relocation. Since we need two
5784 relocations for this use a "composite" reloc. */
5785 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5787 irel->r_offset = trampoff + insn_offset;
5789 /* Record the fixup so we don't do it again this section. */
5790 f = bfd_malloc (sizeof (*f));
5794 f->trampoff = trampoff;
5801 val = f->trampoff - roff;
5802 if (val >= max_branch_offset)
5805 /* Nop out the reloc, since we're finalizing things here. */
5806 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5809 /* Get the section contents. */
5810 if (contents == NULL)
5812 /* Get cached copy if it exists. */
5813 if (elf_section_data (isec)->this_hdr.contents != NULL)
5814 contents = elf_section_data (isec)->this_hdr.contents;
5817 /* Go get them off disk. */
5818 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5823 /* Fix up the existing branch to hit the trampoline. */
5824 hit_addr = contents + roff;
5828 case R_PPC_LOCAL24PC:
5829 case R_PPC_PLTREL24:
5830 t0 = bfd_get_32 (abfd, hit_addr);
5832 t0 |= val & 0x3fffffc;
5833 bfd_put_32 (abfd, t0, hit_addr);
5837 case R_PPC_REL14_BRTAKEN:
5838 case R_PPC_REL14_BRNTAKEN:
5839 t0 = bfd_get_32 (abfd, hit_addr);
5842 bfd_put_32 (abfd, t0, hit_addr);
5847 /* Write out the trampolines. */
5848 changed = fixups != NULL;
5858 struct one_fixup *f = fixups;
5859 fixups = fixups->next;
5864 contents = bfd_realloc_or_free (contents, trampoff);
5865 if (contents == NULL)
5868 isec->size = (isec->size + 3) & (bfd_vma) -4;
5869 /* Branch around the trampolines. */
5870 val = trampoff - isec->size + 0x48000000;
5871 dest = contents + isec->size;
5872 isec->size = trampoff;
5873 bfd_put_32 (abfd, val, dest);
5876 if (link_info->shared)
5878 stub = shared_stub_entry;
5879 size = ARRAY_SIZE (shared_stub_entry);
5884 size = ARRAY_SIZE (stub_entry);
5888 while (dest < contents + trampoff)
5890 bfd_put_32 (abfd, stub[i], dest);
5896 BFD_ASSERT (i == 0);
5900 && symtab_hdr->contents != (unsigned char *) isymbuf)
5902 if (! link_info->keep_memory)
5906 /* Cache the symbols for elf_link_input_bfd. */
5907 symtab_hdr->contents = (unsigned char *) isymbuf;
5911 if (contents != NULL
5912 && elf_section_data (isec)->this_hdr.contents != contents)
5914 if (!changed && !link_info->keep_memory)
5918 /* Cache the section contents for elf_link_input_bfd. */
5919 elf_section_data (isec)->this_hdr.contents = contents;
5923 if (elf_section_data (isec)->relocs != internal_relocs)
5926 free (internal_relocs);
5928 elf_section_data (isec)->relocs = internal_relocs;
5935 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5937 if (contents != NULL
5938 && elf_section_data (isec)->this_hdr.contents != contents)
5940 if (internal_relocs != NULL
5941 && elf_section_data (isec)->relocs != internal_relocs)
5942 free (internal_relocs);
5946 /* What to do when ld finds relocations against symbols defined in
5947 discarded sections. */
5950 ppc_elf_action_discarded (asection *sec)
5952 if (strcmp (".fixup", sec->name) == 0)
5955 if (strcmp (".got2", sec->name) == 0)
5958 return _bfd_elf_default_action_discarded (sec);
5961 /* Fill in the address for a pointer generated in a linker section. */
5964 elf_finish_pointer_linker_section (bfd *input_bfd,
5965 elf_linker_section_t *lsect,
5966 struct elf_link_hash_entry *h,
5968 const Elf_Internal_Rela *rel)
5970 elf_linker_section_pointers_t *linker_section_ptr;
5972 BFD_ASSERT (lsect != NULL);
5976 /* Handle global symbol. */
5977 struct ppc_elf_link_hash_entry *eh;
5979 eh = (struct ppc_elf_link_hash_entry *) h;
5980 BFD_ASSERT (eh->elf.def_regular);
5981 linker_section_ptr = eh->linker_section_pointer;
5985 /* Handle local symbol. */
5986 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5988 BFD_ASSERT (is_ppc_elf (input_bfd));
5989 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5990 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5993 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5996 BFD_ASSERT (linker_section_ptr != NULL);
5998 /* Offset will always be a multiple of four, so use the bottom bit
5999 as a "written" flag. */
6000 if ((linker_section_ptr->offset & 1) == 0)
6002 bfd_put_32 (lsect->section->owner,
6003 relocation + linker_section_ptr->addend,
6004 lsect->section->contents + linker_section_ptr->offset);
6005 linker_section_ptr->offset += 1;
6008 relocation = (lsect->section->output_offset
6009 + linker_section_ptr->offset - 1
6014 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6015 lsect->name, (long) relocation, (long) relocation);
6018 /* Subtract out the addend, because it will get added back in by the normal
6020 return relocation - linker_section_ptr->addend;
6023 /* The RELOCATE_SECTION function is called by the ELF backend linker
6024 to handle the relocations for a section.
6026 The relocs are always passed as Rela structures; if the section
6027 actually uses Rel structures, the r_addend field will always be
6030 This function is responsible for adjust the section contents as
6031 necessary, and (if using Rela relocs and generating a
6032 relocatable output file) adjusting the reloc addend as
6035 This function does not have to worry about setting the reloc
6036 address or the reloc symbol index.
6038 LOCAL_SYMS is a pointer to the swapped in local symbols.
6040 LOCAL_SECTIONS is an array giving the section in the input file
6041 corresponding to the st_shndx field of each local symbol.
6043 The global hash table entry for the global symbols can be found
6044 via elf_sym_hashes (input_bfd).
6046 When generating relocatable output, this function must handle
6047 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6048 going to be the section symbol corresponding to the output
6049 section, which means that the addend must be adjusted
6053 ppc_elf_relocate_section (bfd *output_bfd,
6054 struct bfd_link_info *info,
6056 asection *input_section,
6058 Elf_Internal_Rela *relocs,
6059 Elf_Internal_Sym *local_syms,
6060 asection **local_sections)
6062 Elf_Internal_Shdr *symtab_hdr;
6063 struct elf_link_hash_entry **sym_hashes;
6064 struct ppc_elf_link_hash_table *htab;
6065 Elf_Internal_Rela *rel;
6066 Elf_Internal_Rela *relend;
6067 Elf_Internal_Rela outrel;
6069 asection *got2, *sreloc = NULL;
6070 bfd_vma *local_got_offsets;
6071 bfd_boolean ret = TRUE;
6072 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6073 bfd_boolean is_vxworks_tls;
6076 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6077 "%ld relocations%s",
6078 input_bfd, input_section,
6079 (long) input_section->reloc_count,
6080 (info->relocatable) ? " (relocatable)" : "");
6083 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6085 /* Initialize howto table if not already done. */
6086 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6087 ppc_elf_howto_init ();
6089 htab = ppc_elf_hash_table (info);
6090 local_got_offsets = elf_local_got_offsets (input_bfd);
6091 symtab_hdr = &elf_symtab_hdr (input_bfd);
6092 sym_hashes = elf_sym_hashes (input_bfd);
6093 /* We have to handle relocations in vxworks .tls_vars sections
6094 specially, because the dynamic loader is 'weird'. */
6095 is_vxworks_tls = (htab->is_vxworks && info->shared
6096 && !strcmp (input_section->output_section->name,
6099 relend = relocs + input_section->reloc_count;
6100 for (; rel < relend; rel++)
6102 enum elf_ppc_reloc_type r_type;
6104 bfd_reloc_status_type r;
6105 Elf_Internal_Sym *sym;
6107 struct elf_link_hash_entry *h;
6108 const char *sym_name;
6109 reloc_howto_type *howto;
6110 unsigned long r_symndx;
6112 bfd_vma branch_bit, insn, from;
6113 bfd_boolean unresolved_reloc;
6115 unsigned int tls_type, tls_mask, tls_gd;
6117 r_type = ELF32_R_TYPE (rel->r_info);
6121 unresolved_reloc = FALSE;
6123 r_symndx = ELF32_R_SYM (rel->r_info);
6125 if (r_symndx < symtab_hdr->sh_info)
6127 sym = local_syms + r_symndx;
6128 sec = local_sections[r_symndx];
6129 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6131 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6135 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6136 r_symndx, symtab_hdr, sym_hashes,
6138 unresolved_reloc, warned);
6140 sym_name = h->root.root.string;
6143 if (sec != NULL && elf_discarded_section (sec))
6145 /* For relocs against symbols from removed linkonce sections,
6146 or sections discarded by a linker script, we just want the
6147 section contents zeroed. Avoid any special processing. */
6149 if (r_type < R_PPC_max)
6150 howto = ppc_elf_howto_table[r_type];
6151 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6157 if (info->relocatable)
6160 && r_type == R_PPC_PLTREL24
6161 && rel->r_addend >= 32768)
6163 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6164 addend specifies the GOT pointer offset within .got2. */
6165 rel->r_addend += got2->output_offset;
6170 /* TLS optimizations. Replace instruction sequences and relocs
6171 based on information we collected in tls_optimize. We edit
6172 RELOCS so that --emit-relocs will output something sensible
6173 for the final instruction stream. */
6176 if (IS_PPC_TLS_RELOC (r_type))
6179 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6180 else if (local_got_offsets != NULL)
6183 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6184 tls_mask = lgot_masks[r_symndx];
6188 /* Ensure reloc mapping code below stays sane. */
6189 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6190 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6191 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6192 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6193 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6194 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6195 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6196 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6203 case R_PPC_GOT_TPREL16:
6204 case R_PPC_GOT_TPREL16_LO:
6206 && (tls_mask & TLS_TPREL) == 0)
6209 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6211 insn |= 0x3c020000; /* addis 0,2,0 */
6212 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6213 r_type = R_PPC_TPREL16_HA;
6214 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6220 && (tls_mask & TLS_TPREL) == 0)
6223 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6224 if ((insn & ((31 << 26) | (31 << 11)))
6225 == ((31 << 26) | (2 << 11)))
6226 rtra = insn & ((1 << 26) - (1 << 16));
6227 else if ((insn & ((31 << 26) | (31 << 16)))
6228 == ((31 << 26) | (2 << 16)))
6229 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6232 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6235 else if ((insn & (31 << 1)) == 23 << 1
6236 && ((insn & (31 << 6)) < 14 << 6
6237 || ((insn & (31 << 6)) >= 16 << 6
6238 && (insn & (31 << 6)) < 24 << 6)))
6239 /* load and store indexed -> dform. */
6240 insn = (32 | ((insn >> 6) & 31)) << 26;
6241 else if ((insn & (31 << 1)) == 21 << 1
6242 && (insn & (0x1a << 6)) == 0)
6243 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6244 insn = (((58 | ((insn >> 6) & 4)) << 26)
6245 | ((insn >> 6) & 1));
6246 else if ((insn & (31 << 1)) == 21 << 1
6247 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6249 insn = (58 << 26) | 2;
6253 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6254 r_type = R_PPC_TPREL16_LO;
6255 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6257 /* Was PPC_TLS which sits on insn boundary, now
6258 PPC_TPREL16_LO which is at low-order half-word. */
6259 rel->r_offset += d_offset;
6263 case R_PPC_GOT_TLSGD16_HI:
6264 case R_PPC_GOT_TLSGD16_HA:
6265 tls_gd = TLS_TPRELGD;
6266 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6270 case R_PPC_GOT_TLSLD16_HI:
6271 case R_PPC_GOT_TLSLD16_HA:
6272 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6275 if ((tls_mask & tls_gd) != 0)
6276 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6277 + R_PPC_GOT_TPREL16);
6280 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6281 rel->r_offset -= d_offset;
6282 r_type = R_PPC_NONE;
6284 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6288 case R_PPC_GOT_TLSGD16:
6289 case R_PPC_GOT_TLSGD16_LO:
6290 tls_gd = TLS_TPRELGD;
6291 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6295 case R_PPC_GOT_TLSLD16:
6296 case R_PPC_GOT_TLSLD16_LO:
6297 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6299 bfd_vma insn1, insn2;
6303 offset = rel[1].r_offset;
6304 insn1 = bfd_get_32 (output_bfd,
6305 contents + rel->r_offset - d_offset);
6306 if ((tls_mask & tls_gd) != 0)
6309 insn1 &= (1 << 26) - 1;
6310 insn1 |= 32 << 26; /* lwz */
6311 insn2 = 0x7c631214; /* add 3,3,2 */
6313 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6314 rel[1].r_addend = 0;
6315 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6316 + R_PPC_GOT_TPREL16);
6317 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6322 insn1 = 0x3c620000; /* addis 3,2,0 */
6323 insn2 = 0x38630000; /* addi 3,3,0 */
6326 /* Was an LD reloc. */
6328 r_symndx < symtab_hdr->sh_info;
6330 if (local_sections[r_symndx] == sec)
6332 if (r_symndx >= symtab_hdr->sh_info)
6334 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6336 rel->r_addend -= (local_syms[r_symndx].st_value
6337 + sec->output_offset
6338 + sec->output_section->vma);
6340 r_type = R_PPC_TPREL16_HA;
6341 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6342 rel[1].r_info = ELF32_R_INFO (r_symndx,
6344 rel[1].r_offset += d_offset;
6345 rel[1].r_addend = rel->r_addend;
6347 bfd_put_32 (output_bfd, insn1,
6348 contents + rel->r_offset - d_offset);
6349 bfd_put_32 (output_bfd, insn2, contents + offset);
6352 /* We changed the symbol on an LD reloc. Start over
6353 in order to get h, sym, sec etc. right. */
6361 /* Handle other relocations that tweak non-addend part of insn. */
6368 /* Branch taken prediction relocations. */
6369 case R_PPC_ADDR14_BRTAKEN:
6370 case R_PPC_REL14_BRTAKEN:
6371 branch_bit = BRANCH_PREDICT_BIT;
6374 /* Branch not taken prediction relocations. */
6375 case R_PPC_ADDR14_BRNTAKEN:
6376 case R_PPC_REL14_BRNTAKEN:
6377 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6378 insn &= ~BRANCH_PREDICT_BIT;
6381 from = (rel->r_offset
6382 + input_section->output_offset
6383 + input_section->output_section->vma);
6385 /* Invert 'y' bit if not the default. */
6386 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6387 insn ^= BRANCH_PREDICT_BIT;
6389 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6393 addend = rel->r_addend;
6396 if (r_type < R_PPC_max)
6397 howto = ppc_elf_howto_table[r_type];
6401 (*_bfd_error_handler)
6402 (_("%B: unknown relocation type %d for symbol %s"),
6403 input_bfd, (int) r_type, sym_name);
6405 bfd_set_error (bfd_error_bad_value);
6411 case R_PPC_EMB_MRKREF:
6412 case R_PPC_GNU_VTINHERIT:
6413 case R_PPC_GNU_VTENTRY:
6416 /* GOT16 relocations. Like an ADDR16 using the symbol's
6417 address in the GOT as relocation value instead of the
6418 symbol's value itself. Also, create a GOT entry for the
6419 symbol and put the symbol value there. */
6420 case R_PPC_GOT_TLSGD16:
6421 case R_PPC_GOT_TLSGD16_LO:
6422 case R_PPC_GOT_TLSGD16_HI:
6423 case R_PPC_GOT_TLSGD16_HA:
6424 tls_type = TLS_TLS | TLS_GD;
6427 case R_PPC_GOT_TLSLD16:
6428 case R_PPC_GOT_TLSLD16_LO:
6429 case R_PPC_GOT_TLSLD16_HI:
6430 case R_PPC_GOT_TLSLD16_HA:
6431 tls_type = TLS_TLS | TLS_LD;
6434 case R_PPC_GOT_TPREL16:
6435 case R_PPC_GOT_TPREL16_LO:
6436 case R_PPC_GOT_TPREL16_HI:
6437 case R_PPC_GOT_TPREL16_HA:
6438 tls_type = TLS_TLS | TLS_TPREL;
6441 case R_PPC_GOT_DTPREL16:
6442 case R_PPC_GOT_DTPREL16_LO:
6443 case R_PPC_GOT_DTPREL16_HI:
6444 case R_PPC_GOT_DTPREL16_HA:
6445 tls_type = TLS_TLS | TLS_DTPREL;
6449 case R_PPC_GOT16_LO:
6450 case R_PPC_GOT16_HI:
6451 case R_PPC_GOT16_HA:
6454 /* Relocation is to the entry for this symbol in the global
6460 if (htab->got == NULL)
6464 if (tls_type == (TLS_TLS | TLS_LD)
6466 || !h->def_dynamic))
6467 offp = &htab->tlsld_got.offset;
6471 dyn = htab->elf.dynamic_sections_created;
6472 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6474 && SYMBOL_REFERENCES_LOCAL (info, h)))
6475 /* This is actually a static link, or it is a
6476 -Bsymbolic link and the symbol is defined
6477 locally, or the symbol was forced to be local
6478 because of a version file. */
6483 unresolved_reloc = FALSE;
6485 offp = &h->got.offset;
6489 if (local_got_offsets == NULL)
6491 offp = &local_got_offsets[r_symndx];
6494 /* The offset must always be a multiple of 4. We use the
6495 least significant bit to record whether we have already
6496 processed this entry. */
6502 unsigned int tls_m = (tls_mask
6503 & (TLS_LD | TLS_GD | TLS_DTPREL
6504 | TLS_TPREL | TLS_TPRELGD));
6506 if (offp == &htab->tlsld_got.offset)
6512 /* We might have multiple got entries for this sym.
6513 Initialize them all. */
6518 if ((tls_m & TLS_LD) != 0)
6520 tls_ty = TLS_TLS | TLS_LD;
6523 else if ((tls_m & TLS_GD) != 0)
6525 tls_ty = TLS_TLS | TLS_GD;
6528 else if ((tls_m & TLS_DTPREL) != 0)
6530 tls_ty = TLS_TLS | TLS_DTPREL;
6531 tls_m &= ~TLS_DTPREL;
6533 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6535 tls_ty = TLS_TLS | TLS_TPREL;
6539 /* Generate relocs for the dynamic linker. */
6540 if ((info->shared || indx != 0)
6542 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6543 || h->root.type != bfd_link_hash_undefweak))
6545 outrel.r_offset = (htab->got->output_section->vma
6546 + htab->got->output_offset
6548 outrel.r_addend = 0;
6549 if (tls_ty & (TLS_LD | TLS_GD))
6551 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6552 if (tls_ty == (TLS_TLS | TLS_GD))
6554 loc = htab->relgot->contents;
6555 loc += (htab->relgot->reloc_count++
6556 * sizeof (Elf32_External_Rela));
6557 bfd_elf32_swap_reloca_out (output_bfd,
6559 outrel.r_offset += 4;
6561 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6564 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6565 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6566 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6567 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6569 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6571 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6574 outrel.r_addend += relocation;
6575 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6576 outrel.r_addend -= htab->elf.tls_sec->vma;
6578 loc = htab->relgot->contents;
6579 loc += (htab->relgot->reloc_count++
6580 * sizeof (Elf32_External_Rela));
6581 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6584 /* Init the .got section contents if we're not
6585 emitting a reloc. */
6588 bfd_vma value = relocation;
6590 if (tls_ty == (TLS_TLS | TLS_LD))
6592 else if (tls_ty != 0)
6594 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6595 if (tls_ty == (TLS_TLS | TLS_TPREL))
6596 value += DTP_OFFSET - TP_OFFSET;
6598 if (tls_ty == (TLS_TLS | TLS_GD))
6600 bfd_put_32 (output_bfd, value,
6601 htab->got->contents + off + 4);
6605 bfd_put_32 (output_bfd, value,
6606 htab->got->contents + off);
6610 if (tls_ty & (TLS_LD | TLS_GD))
6619 if (off >= (bfd_vma) -2)
6622 if ((tls_type & TLS_TLS) != 0)
6624 if (tls_type != (TLS_TLS | TLS_LD))
6626 if ((tls_mask & TLS_LD) != 0
6628 || !h->def_dynamic))
6630 if (tls_type != (TLS_TLS | TLS_GD))
6632 if ((tls_mask & TLS_GD) != 0)
6634 if (tls_type != (TLS_TLS | TLS_DTPREL))
6636 if ((tls_mask & TLS_DTPREL) != 0)
6643 relocation = htab->got->output_offset + off;
6644 relocation -= htab->elf.hgot->root.u.def.value;
6646 /* Addends on got relocations don't make much sense.
6647 x+off@got is actually x@got+off, and since the got is
6648 generated by a hash table traversal, the value in the
6649 got at entry m+n bears little relation to the entry m. */
6651 (*_bfd_error_handler)
6652 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6655 (long) rel->r_offset,
6661 /* Relocations that need no special processing. */
6662 case R_PPC_LOCAL24PC:
6663 /* It makes no sense to point a local relocation
6664 at a symbol not in this object. */
6665 if (unresolved_reloc)
6667 if (! (*info->callbacks->undefined_symbol) (info,
6668 h->root.root.string,
6678 case R_PPC_DTPREL16:
6679 case R_PPC_DTPREL16_LO:
6680 case R_PPC_DTPREL16_HI:
6681 case R_PPC_DTPREL16_HA:
6682 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6685 /* Relocations that may need to be propagated if this is a shared
6688 case R_PPC_TPREL16_LO:
6689 case R_PPC_TPREL16_HI:
6690 case R_PPC_TPREL16_HA:
6691 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6692 /* The TPREL16 relocs shouldn't really be used in shared
6693 libs as they will result in DT_TEXTREL being set, but
6694 support them anyway. */
6698 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6701 case R_PPC_DTPREL32:
6702 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6705 case R_PPC_DTPMOD32:
6711 case R_PPC_REL16_LO:
6712 case R_PPC_REL16_HI:
6713 case R_PPC_REL16_HA:
6717 if (h == NULL || h == htab->elf.hgot)
6723 case R_PPC_ADDR16_LO:
6724 case R_PPC_ADDR16_HI:
6725 case R_PPC_ADDR16_HA:
6732 case R_PPC_REL14_BRTAKEN:
6733 case R_PPC_REL14_BRNTAKEN:
6734 /* If these relocations are not to a named symbol, they can be
6735 handled right here, no need to bother the dynamic linker. */
6736 if (SYMBOL_CALLS_LOCAL (info, h)
6737 || h == htab->elf.hgot)
6743 case R_PPC_ADDR14_BRTAKEN:
6744 case R_PPC_ADDR14_BRNTAKEN:
6745 if (h != NULL && !info->shared)
6750 if ((input_section->flags & SEC_ALLOC) == 0
6756 && ((h->root.type == bfd_link_hash_undefined
6757 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6758 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6759 || (h->root.type == bfd_link_hash_undefweak
6760 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
6761 && (must_be_dyn_reloc (info, r_type)
6762 || !SYMBOL_CALLS_LOCAL (info, h)))
6763 || (ELIMINATE_COPY_RELOCS
6768 && !h->def_regular))
6773 fprintf (stderr, "ppc_elf_relocate_section needs to "
6774 "create relocation for %s\n",
6775 (h && h->root.root.string
6776 ? h->root.root.string : "<unknown>"));
6779 /* When generating a shared object, these relocations
6780 are copied into the output file to be resolved at run
6786 name = (bfd_elf_string_from_elf_section
6788 elf_elfheader (input_bfd)->e_shstrndx,
6789 elf_section_data (input_section)->rel_hdr.sh_name));
6793 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
6794 && strcmp (bfd_get_section_name (input_bfd,
6798 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6799 BFD_ASSERT (sreloc != NULL);
6804 _bfd_elf_section_offset (output_bfd, info, input_section,
6806 if (outrel.r_offset == (bfd_vma) -1
6807 || outrel.r_offset == (bfd_vma) -2)
6808 skip = (int) outrel.r_offset;
6809 outrel.r_offset += (input_section->output_section->vma
6810 + input_section->output_offset);
6813 memset (&outrel, 0, sizeof outrel);
6815 && (h->root.type == bfd_link_hash_undefined
6816 || h->root.type == bfd_link_hash_undefweak))
6817 || !SYMBOL_REFERENCES_LOCAL (info, h))
6819 unresolved_reloc = FALSE;
6820 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6821 outrel.r_addend = rel->r_addend;
6825 outrel.r_addend = relocation + rel->r_addend;
6827 if (r_type == R_PPC_ADDR32)
6828 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6833 if (r_symndx == 0 || bfd_is_abs_section (sec))
6835 else if (sec == NULL || sec->owner == NULL)
6837 bfd_set_error (bfd_error_bad_value);
6844 /* We are turning this relocation into one
6845 against a section symbol. It would be
6846 proper to subtract the symbol's value,
6847 osec->vma, from the emitted reloc addend,
6848 but ld.so expects buggy relocs. */
6849 osec = sec->output_section;
6850 indx = elf_section_data (osec)->dynindx;
6853 osec = htab->elf.text_index_section;
6854 indx = elf_section_data (osec)->dynindx;
6856 BFD_ASSERT (indx != 0);
6859 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6860 indx, osec->name, osec->flags,
6861 h->root.root.string);
6865 outrel.r_info = ELF32_R_INFO (indx, r_type);
6869 loc = sreloc->contents;
6870 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6871 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6876 /* This reloc will be computed at runtime. We clear the memory
6877 so that it contains predictable value. */
6879 && ((input_section->flags & SEC_ALLOC) != 0
6880 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6882 relocation = howto->pc_relative ? outrel.r_offset : 0;
6889 case R_PPC_RELAX32PC_PLT:
6890 case R_PPC_RELAX32_PLT:
6892 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6894 if (htab->plt_type == PLT_NEW)
6895 relocation = (htab->glink->output_section->vma
6896 + htab->glink->output_offset
6897 + ent->glink_offset);
6899 relocation = (htab->plt->output_section->vma
6900 + htab->plt->output_offset
6904 if (r_type == R_PPC_RELAX32_PLT)
6908 case R_PPC_RELAX32PC:
6909 relocation -= (input_section->output_section->vma
6910 + input_section->output_offset
6911 + rel->r_offset - 4);
6920 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6921 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6923 /* We're clearing the bits for R_PPC_ADDR16_HA
6924 and R_PPC_ADDR16_LO here. */
6928 /* t0 is HA, t1 is LO */
6929 relocation += addend;
6930 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6931 t1 |= relocation & 0xffff;
6933 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6934 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6938 /* Indirect .sdata relocation. */
6939 case R_PPC_EMB_SDAI16:
6940 BFD_ASSERT (htab->sdata[0].section != NULL);
6942 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6943 h, relocation, rel);
6946 /* Indirect .sdata2 relocation. */
6947 case R_PPC_EMB_SDA2I16:
6948 BFD_ASSERT (htab->sdata[1].section != NULL);
6950 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6951 h, relocation, rel);
6954 /* Handle the TOC16 reloc. We want to use the offset within the .got
6955 section, not the actual VMA. This is appropriate when generating
6956 an embedded ELF object, for which the .got section acts like the
6957 AIX .toc section. */
6958 case R_PPC_TOC16: /* phony GOT16 relocations */
6959 BFD_ASSERT (sec != NULL);
6960 BFD_ASSERT (bfd_is_und_section (sec)
6961 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6962 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6964 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6967 case R_PPC_PLTREL24:
6968 /* Relocation is to the entry for this symbol in the
6969 procedure linkage table. */
6971 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6975 || htab->plt == NULL)
6977 /* We didn't make a PLT entry for this symbol. This
6978 happens when statically linking PIC code, or when
6979 using -Bsymbolic. */
6983 unresolved_reloc = FALSE;
6984 if (htab->plt_type == PLT_NEW)
6985 relocation = (htab->glink->output_section->vma
6986 + htab->glink->output_offset
6987 + ent->glink_offset);
6989 relocation = (htab->plt->output_section->vma
6990 + htab->plt->output_offset
6995 /* Relocate against _SDA_BASE_. */
6996 case R_PPC_SDAREL16:
6999 struct elf_link_hash_entry *sh;
7001 BFD_ASSERT (sec != NULL);
7002 name = bfd_get_section_name (abfd, sec->output_section);
7003 if (! ((CONST_STRNEQ (name, ".sdata")
7004 && (name[6] == 0 || name[6] == '.'))
7005 || (CONST_STRNEQ (name, ".sbss")
7006 && (name[5] == 0 || name[5] == '.'))))
7008 (*_bfd_error_handler)
7009 (_("%B: the target (%s) of a %s relocation is "
7010 "in the wrong output section (%s)"),
7016 sh = htab->sdata[0].sym;
7017 addend -= (sh->root.u.def.value
7018 + sh->root.u.def.section->output_offset
7019 + sh->root.u.def.section->output_section->vma);
7023 /* Relocate against _SDA2_BASE_. */
7024 case R_PPC_EMB_SDA2REL:
7027 struct elf_link_hash_entry *sh;
7029 BFD_ASSERT (sec != NULL);
7030 name = bfd_get_section_name (abfd, sec->output_section);
7031 if (! (CONST_STRNEQ (name, ".sdata2")
7032 || CONST_STRNEQ (name, ".sbss2")))
7034 (*_bfd_error_handler)
7035 (_("%B: the target (%s) of a %s relocation is "
7036 "in the wrong output section (%s)"),
7042 bfd_set_error (bfd_error_bad_value);
7046 sh = htab->sdata[1].sym;
7047 addend -= (sh->root.u.def.value
7048 + sh->root.u.def.section->output_offset
7049 + sh->root.u.def.section->output_section->vma);
7053 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7054 case R_PPC_EMB_SDA21:
7055 case R_PPC_EMB_RELSDA:
7059 struct elf_link_hash_entry *sh;
7061 BFD_ASSERT (sec != NULL);
7062 name = bfd_get_section_name (abfd, sec->output_section);
7063 if (((CONST_STRNEQ (name, ".sdata")
7064 && (name[6] == 0 || name[6] == '.'))
7065 || (CONST_STRNEQ (name, ".sbss")
7066 && (name[5] == 0 || name[5] == '.'))))
7069 sh = htab->sdata[0].sym;
7070 addend -= (sh->root.u.def.value
7071 + sh->root.u.def.section->output_offset
7072 + sh->root.u.def.section->output_section->vma);
7075 else if (CONST_STRNEQ (name, ".sdata2")
7076 || CONST_STRNEQ (name, ".sbss2"))
7079 sh = htab->sdata[1].sym;
7080 addend -= (sh->root.u.def.value
7081 + sh->root.u.def.section->output_offset
7082 + sh->root.u.def.section->output_section->vma);
7085 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7086 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7093 (*_bfd_error_handler)
7094 (_("%B: the target (%s) of a %s relocation is "
7095 "in the wrong output section (%s)"),
7101 bfd_set_error (bfd_error_bad_value);
7106 if (r_type == R_PPC_EMB_SDA21)
7107 { /* fill in register field */
7108 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7109 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7110 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7115 /* Relocate against the beginning of the section. */
7117 case R_PPC_SECTOFF_LO:
7118 case R_PPC_SECTOFF_HI:
7119 case R_PPC_SECTOFF_HA:
7120 BFD_ASSERT (sec != NULL);
7121 addend -= sec->output_section->vma;
7124 /* Negative relocations. */
7125 case R_PPC_EMB_NADDR32:
7126 case R_PPC_EMB_NADDR16:
7127 case R_PPC_EMB_NADDR16_LO:
7128 case R_PPC_EMB_NADDR16_HI:
7129 case R_PPC_EMB_NADDR16_HA:
7130 addend -= 2 * relocation;
7134 case R_PPC_GLOB_DAT:
7135 case R_PPC_JMP_SLOT:
7136 case R_PPC_RELATIVE:
7138 case R_PPC_PLTREL32:
7139 case R_PPC_PLT16_LO:
7140 case R_PPC_PLT16_HI:
7141 case R_PPC_PLT16_HA:
7143 case R_PPC_EMB_RELSEC16:
7144 case R_PPC_EMB_RELST_LO:
7145 case R_PPC_EMB_RELST_HI:
7146 case R_PPC_EMB_RELST_HA:
7147 case R_PPC_EMB_BIT_FLD:
7148 (*_bfd_error_handler)
7149 (_("%B: relocation %s is not yet supported for symbol %s."),
7154 bfd_set_error (bfd_error_invalid_operation);
7159 /* Do any further special processing. */
7165 case R_PPC_ADDR16_HA:
7166 case R_PPC_REL16_HA:
7167 case R_PPC_SECTOFF_HA:
7168 case R_PPC_TPREL16_HA:
7169 case R_PPC_DTPREL16_HA:
7170 case R_PPC_EMB_NADDR16_HA:
7171 case R_PPC_EMB_RELST_HA:
7172 /* It's just possible that this symbol is a weak symbol
7173 that's not actually defined anywhere. In that case,
7174 'sec' would be NULL, and we should leave the symbol
7175 alone (it will be set to zero elsewhere in the link). */
7180 case R_PPC_PLT16_HA:
7181 case R_PPC_GOT16_HA:
7182 case R_PPC_GOT_TLSGD16_HA:
7183 case R_PPC_GOT_TLSLD16_HA:
7184 case R_PPC_GOT_TPREL16_HA:
7185 case R_PPC_GOT_DTPREL16_HA:
7186 /* Add 0x10000 if sign bit in 0:15 is set.
7187 Bits 0:15 are not used. */
7193 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7194 "offset = %ld, addend = %ld\n",
7199 (long) rel->r_offset,
7203 if (unresolved_reloc
7204 && !((input_section->flags & SEC_DEBUGGING) != 0
7207 (*_bfd_error_handler)
7208 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7211 (long) rel->r_offset,
7217 r = _bfd_final_link_relocate (howto,
7225 if (r != bfd_reloc_ok)
7227 if (r == bfd_reloc_overflow)
7232 && h->root.type == bfd_link_hash_undefweak
7233 && howto->pc_relative)
7235 /* Assume this is a call protected by other code that
7236 detect the symbol is undefined. If this is the case,
7237 we can safely ignore the overflow. If not, the
7238 program is hosed anyway, and a little warning isn't
7244 if (! (*info->callbacks->reloc_overflow) (info,
7245 (h ? &h->root : NULL),
7256 (*_bfd_error_handler)
7257 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7258 input_bfd, input_section,
7259 (long) rel->r_offset, howto->name, sym_name, (int) r);
7266 fprintf (stderr, "\n");
7272 #define PPC_LO(v) ((v) & 0xffff)
7273 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7274 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7276 /* Finish up dynamic symbol handling. We set the contents of various
7277 dynamic sections here. */
7280 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7281 struct bfd_link_info *info,
7282 struct elf_link_hash_entry *h,
7283 Elf_Internal_Sym *sym)
7285 struct ppc_elf_link_hash_table *htab;
7286 struct plt_entry *ent;
7287 bfd_boolean doneone;
7290 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7291 h->root.root.string);
7294 htab = ppc_elf_hash_table (info);
7295 BFD_ASSERT (htab->elf.dynobj != NULL);
7298 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7299 if (ent->plt.offset != (bfd_vma) -1)
7303 Elf_Internal_Rela rela;
7305 bfd_vma reloc_index;
7307 if (htab->plt_type == PLT_NEW)
7308 reloc_index = ent->plt.offset / 4;
7311 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7312 / htab->plt_slot_size);
7313 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
7314 && htab->plt_type == PLT_OLD)
7315 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7318 /* This symbol has an entry in the procedure linkage table.
7320 if (htab->plt_type == PLT_VXWORKS)
7323 const bfd_vma *plt_entry;
7325 /* The first three entries in .got.plt are reserved. */
7326 got_offset = (reloc_index + 3) * 4;
7328 /* Use the right PLT. */
7329 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7330 : ppc_elf_vxworks_plt_entry;
7332 /* Fill in the .plt on VxWorks. */
7335 bfd_vma got_offset_hi = (got_offset >> 16)
7336 + ((got_offset & 0x8000) >> 15);
7338 bfd_put_32 (output_bfd,
7339 plt_entry[0] | (got_offset_hi & 0xffff),
7340 htab->plt->contents + ent->plt.offset + 0);
7341 bfd_put_32 (output_bfd,
7342 plt_entry[1] | (got_offset & 0xffff),
7343 htab->plt->contents + ent->plt.offset + 4);
7349 + htab->elf.hgot->root.u.def.value
7350 + htab->elf.hgot->root.u.def.section->output_offset
7351 + htab->elf.hgot->root.u.def.section->output_section->vma);
7352 bfd_vma got_loc_hi = (got_loc >> 16)
7353 + ((got_loc & 0x8000) >> 15);
7355 bfd_put_32 (output_bfd,
7356 plt_entry[0] | (got_loc_hi & 0xffff),
7357 htab->plt->contents + ent->plt.offset + 0);
7358 bfd_put_32 (output_bfd,
7359 plt_entry[1] | (got_loc & 0xffff),
7360 htab->plt->contents + ent->plt.offset + 4);
7363 bfd_put_32 (output_bfd, plt_entry[2],
7364 htab->plt->contents + ent->plt.offset + 8);
7365 bfd_put_32 (output_bfd, plt_entry[3],
7366 htab->plt->contents + ent->plt.offset + 12);
7368 /* This instruction is an immediate load. The value loaded is
7369 the byte offset of the R_PPC_JMP_SLOT relocation from the
7370 start of the .rela.plt section. The value is stored in the
7371 low-order 16 bits of the load instruction. */
7372 /* NOTE: It appears that this is now an index rather than a
7373 prescaled offset. */
7374 bfd_put_32 (output_bfd,
7375 plt_entry[4] | reloc_index,
7376 htab->plt->contents + ent->plt.offset + 16);
7377 /* This instruction is a PC-relative branch whose target is
7378 the start of the PLT section. The address of this branch
7379 instruction is 20 bytes beyond the start of this PLT entry.
7380 The address is encoded in bits 6-29, inclusive. The value
7381 stored is right-shifted by two bits, permitting a 26-bit
7383 bfd_put_32 (output_bfd,
7385 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7386 htab->plt->contents + ent->plt.offset + 20);
7387 bfd_put_32 (output_bfd, plt_entry[6],
7388 htab->plt->contents + ent->plt.offset + 24);
7389 bfd_put_32 (output_bfd, plt_entry[7],
7390 htab->plt->contents + ent->plt.offset + 28);
7392 /* Fill in the GOT entry corresponding to this PLT slot with
7393 the address immediately after the the "bctr" instruction
7394 in this PLT entry. */
7395 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7396 + htab->plt->output_offset
7397 + ent->plt.offset + 16),
7398 htab->sgotplt->contents + got_offset);
7402 /* Fill in a couple of entries in .rela.plt.unloaded. */
7403 loc = htab->srelplt2->contents
7404 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7405 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7406 * sizeof (Elf32_External_Rela));
7408 /* Provide the @ha relocation for the first instruction. */
7409 rela.r_offset = (htab->plt->output_section->vma
7410 + htab->plt->output_offset
7411 + ent->plt.offset + 2);
7412 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7414 rela.r_addend = got_offset;
7415 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7416 loc += sizeof (Elf32_External_Rela);
7418 /* Provide the @l relocation for the second instruction. */
7419 rela.r_offset = (htab->plt->output_section->vma
7420 + htab->plt->output_offset
7421 + ent->plt.offset + 6);
7422 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7424 rela.r_addend = got_offset;
7425 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7426 loc += sizeof (Elf32_External_Rela);
7428 /* Provide a relocation for the GOT entry corresponding to this
7429 PLT slot. Point it at the middle of the .plt entry. */
7430 rela.r_offset = (htab->sgotplt->output_section->vma
7431 + htab->sgotplt->output_offset
7433 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
7435 rela.r_addend = ent->plt.offset + 16;
7436 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7439 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7440 In particular, the offset for the relocation is not the
7441 address of the PLT entry for this function, as specified
7442 by the ABI. Instead, the offset is set to the address of
7443 the GOT slot for this function. See EABI 4.4.4.1. */
7444 rela.r_offset = (htab->sgotplt->output_section->vma
7445 + htab->sgotplt->output_offset
7451 rela.r_offset = (htab->plt->output_section->vma
7452 + htab->plt->output_offset
7454 if (htab->plt_type == PLT_OLD)
7456 /* We don't need to fill in the .plt. The ppc dynamic
7457 linker will fill it in. */
7461 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7462 + htab->glink->output_section->vma
7463 + htab->glink->output_offset);
7464 bfd_put_32 (output_bfd, val,
7465 htab->plt->contents + ent->plt.offset);
7469 /* Fill in the entry in the .rela.plt section. */
7470 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7473 loc = (htab->relplt->contents
7474 + reloc_index * sizeof (Elf32_External_Rela));
7475 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7477 if (!h->def_regular)
7479 /* Mark the symbol as undefined, rather than as
7480 defined in the .plt section. Leave the value if
7481 there were any relocations where pointer equality
7482 matters (this is a clue for the dynamic linker, to
7483 make function pointer comparisons work between an
7484 application and shared library), otherwise set it
7486 sym->st_shndx = SHN_UNDEF;
7487 if (!h->pointer_equality_needed)
7489 else if (!h->ref_regular_nonweak)
7491 /* This breaks function pointer comparisons, but
7492 that is better than breaking tests for a NULL
7493 function pointer. */
7500 if (htab->plt_type == PLT_NEW)
7505 plt = (ent->plt.offset
7506 + htab->plt->output_section->vma
7507 + htab->plt->output_offset);
7508 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
7510 if (info->shared || info->pie)
7514 if (ent->addend >= 32768)
7516 + ent->sec->output_section->vma
7517 + ent->sec->output_offset);
7518 else if (htab->elf.hgot != NULL)
7519 got = (htab->elf.hgot->root.u.def.value
7520 + htab->elf.hgot->root.u.def.section->output_section->vma
7521 + htab->elf.hgot->root.u.def.section->output_offset);
7525 if (plt + 0x8000 < 0x10000)
7527 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7529 bfd_put_32 (output_bfd, MTCTR_11, p);
7531 bfd_put_32 (output_bfd, BCTR, p);
7533 bfd_put_32 (output_bfd, NOP, p);
7538 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7540 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7542 bfd_put_32 (output_bfd, MTCTR_11, p);
7544 bfd_put_32 (output_bfd, BCTR, p);
7550 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7552 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7554 bfd_put_32 (output_bfd, MTCTR_11, p);
7556 bfd_put_32 (output_bfd, BCTR, p);
7559 /* We only need one non-PIC glink stub. */
7570 Elf_Internal_Rela rela;
7573 /* This symbols needs a copy reloc. Set it up. */
7576 fprintf (stderr, ", copy");
7579 BFD_ASSERT (h->dynindx != -1);
7581 if (ppc_elf_hash_entry (h)->has_sda_refs)
7585 BFD_ASSERT (s != NULL);
7587 rela.r_offset = (h->root.u.def.value
7588 + h->root.u.def.section->output_section->vma
7589 + h->root.u.def.section->output_offset);
7590 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7592 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7593 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7597 fprintf (stderr, "\n");
7600 /* Mark some specially defined symbols as absolute. */
7601 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7602 || (!htab->is_vxworks
7603 && (h == htab->elf.hgot
7604 || strcmp (h->root.root.string,
7605 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7606 sym->st_shndx = SHN_ABS;
7611 static enum elf_reloc_type_class
7612 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7614 switch (ELF32_R_TYPE (rela->r_info))
7616 case R_PPC_RELATIVE:
7617 return reloc_class_relative;
7620 case R_PPC_JMP_SLOT:
7621 return reloc_class_plt;
7623 return reloc_class_copy;
7625 return reloc_class_normal;
7629 /* Finish up the dynamic sections. */
7632 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7633 struct bfd_link_info *info)
7637 struct ppc_elf_link_hash_table *htab;
7642 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7645 htab = ppc_elf_hash_table (info);
7646 dynobj = elf_hash_table (info)->dynobj;
7647 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7648 if (htab->is_vxworks)
7649 splt = bfd_get_section_by_name (dynobj, ".plt");
7654 if (htab->elf.hgot != NULL)
7655 got = (htab->elf.hgot->root.u.def.value
7656 + htab->elf.hgot->root.u.def.section->output_section->vma
7657 + htab->elf.hgot->root.u.def.section->output_offset);
7659 if (htab->elf.dynamic_sections_created)
7661 Elf32_External_Dyn *dyncon, *dynconend;
7663 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7665 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7666 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7667 for (; dyncon < dynconend; dyncon++)
7669 Elf_Internal_Dyn dyn;
7672 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7677 if (htab->is_vxworks)
7681 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7685 dyn.d_un.d_val = htab->relplt->size;
7690 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7694 dyn.d_un.d_ptr = got;
7698 if (htab->is_vxworks)
7701 dyn.d_un.d_ptr -= htab->relplt->size;
7707 if (htab->is_vxworks
7708 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7713 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7717 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7718 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7719 if (htab->got != NULL)
7721 unsigned char *p = htab->got->contents;
7724 p += htab->elf.hgot->root.u.def.value;
7725 if (htab->plt_type == PLT_OLD)
7726 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7730 val = sdyn->output_section->vma + sdyn->output_offset;
7731 bfd_put_32 (output_bfd, val, p);
7733 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7736 /* Fill in the first entry in the VxWorks procedure linkage table. */
7737 if (splt && splt->size > 0)
7739 /* Use the right PLT. */
7740 static const bfd_vma *plt_entry = NULL;
7741 plt_entry = info->shared ?
7742 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7747 (htab->elf.hgot->root.u.def.section->output_section->vma
7748 + htab->elf.hgot->root.u.def.section->output_offset
7749 + htab->elf.hgot->root.u.def.value);
7750 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7752 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7753 splt->contents + 0);
7754 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7755 splt->contents + 4);
7759 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7760 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7762 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7763 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7764 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7765 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7766 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7767 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7771 Elf_Internal_Rela rela;
7774 loc = htab->srelplt2->contents;
7776 /* Output the @ha relocation for the first instruction. */
7777 rela.r_offset = (htab->plt->output_section->vma
7778 + htab->plt->output_offset
7780 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7782 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7783 loc += sizeof (Elf32_External_Rela);
7785 /* Output the @l relocation for the second instruction. */
7786 rela.r_offset = (htab->plt->output_section->vma
7787 + htab->plt->output_offset
7789 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7791 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7792 loc += sizeof (Elf32_External_Rela);
7794 /* Fix up the remaining relocations. They may have the wrong
7795 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7796 in which symbols were output. */
7797 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7799 Elf_Internal_Rela rel;
7801 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7802 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7803 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7804 loc += sizeof (Elf32_External_Rela);
7806 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7807 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7808 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7809 loc += sizeof (Elf32_External_Rela);
7811 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7812 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7813 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7814 loc += sizeof (Elf32_External_Rela);
7819 if (htab->glink != NULL && htab->glink->contents != NULL)
7822 unsigned char *endp;
7827 * PIC glink code is the following:
7829 * # ith PLT code stub.
7830 * addis 11,30,(plt+(i-1)*4-got)@ha
7831 * lwz 11,(plt+(i-1)*4-got)@l(11)
7835 * # A table of branches, one for each plt entry.
7836 * # The idea is that the plt call stub loads ctr and r11 with these
7837 * # addresses, so (r11 - res_0) gives the plt index * 4.
7838 * res_0: b PLTresolve
7839 * res_1: b PLTresolve
7841 * # Some number of entries towards the end can be nops
7847 * addis 11,11,(1f-res_0)@ha
7850 * 1: addi 11,11,(1b-res_0)@l
7853 * sub 11,11,12 # r11 = index * 4
7854 * addis 12,12,(got+4-1b)@ha
7855 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7856 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7859 * add 11,0,11 # r11 = index * 12 = reloc offset.
7862 static const unsigned int pic_plt_resolve[] =
7883 * Non-PIC glink code is a little simpler.
7885 * # ith PLT code stub.
7886 * lis 11,(plt+(i-1)*4)@ha
7887 * lwz 11,(plt+(i-1)*4)@l(11)
7891 * The branch table is the same, then comes
7895 * addis 11,11,(-res_0)@ha
7896 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7897 * addi 11,11,(-res_0)@l # r11 = index * 4
7900 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7901 * add 11,0,11 # r11 = index * 12 = reloc offset.
7904 static const unsigned int plt_resolve[] =
7924 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7926 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7929 /* Build the branch table, one for each plt entry (less one),
7930 and perhaps some padding. */
7931 p = htab->glink->contents;
7932 p += htab->glink_pltresolve;
7933 endp = htab->glink->contents;
7934 endp += htab->glink->size - GLINK_PLTRESOLVE;
7935 while (p < endp - 8 * 4)
7937 bfd_put_32 (output_bfd, B + endp - p, p);
7942 bfd_put_32 (output_bfd, NOP, p);
7946 res0 = (htab->glink_pltresolve
7947 + htab->glink->output_section->vma
7948 + htab->glink->output_offset);
7950 /* Last comes the PLTresolve stub. */
7951 if (info->shared || info->pie)
7955 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7957 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7960 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7962 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7963 + htab->glink->output_section->vma
7964 + htab->glink->output_offset);
7966 bfd_put_32 (output_bfd,
7967 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7968 bfd_put_32 (output_bfd,
7969 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7970 bfd_put_32 (output_bfd,
7971 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7972 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7974 bfd_put_32 (output_bfd,
7975 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7976 bfd_put_32 (output_bfd,
7977 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7981 bfd_put_32 (output_bfd,
7982 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7983 bfd_put_32 (output_bfd,
7984 LWZ_12_12 + 4, p + 9*4);
7989 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7991 bfd_put_32 (output_bfd, plt_resolve[i], p);
7994 p -= 4 * ARRAY_SIZE (plt_resolve);
7996 bfd_put_32 (output_bfd,
7997 LIS_12 + PPC_HA (got + 4), p + 0*4);
7998 bfd_put_32 (output_bfd,
7999 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8000 bfd_put_32 (output_bfd,
8001 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8002 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8004 bfd_put_32 (output_bfd,
8005 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8006 bfd_put_32 (output_bfd,
8007 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8011 bfd_put_32 (output_bfd,
8012 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8013 bfd_put_32 (output_bfd,
8014 LWZ_12_12 + 4, p + 6*4);
8022 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8023 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8024 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8025 #define TARGET_BIG_NAME "elf32-powerpc"
8026 #define ELF_ARCH bfd_arch_powerpc
8027 #define ELF_MACHINE_CODE EM_PPC
8028 #ifdef __QNXTARGET__
8029 #define ELF_MAXPAGESIZE 0x1000
8031 #define ELF_MAXPAGESIZE 0x10000
8033 #define ELF_MINPAGESIZE 0x1000
8034 #define ELF_COMMONPAGESIZE 0x1000
8035 #define elf_info_to_howto ppc_elf_info_to_howto
8037 #ifdef EM_CYGNUS_POWERPC
8038 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8042 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8045 #define elf_backend_plt_not_loaded 1
8046 #define elf_backend_can_gc_sections 1
8047 #define elf_backend_can_refcount 1
8048 #define elf_backend_rela_normal 1
8050 #define bfd_elf32_mkobject ppc_elf_mkobject
8051 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8052 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8053 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8054 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8055 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8056 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8057 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8059 #define elf_backend_object_p ppc_elf_object_p
8060 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8061 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8062 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8063 #define elf_backend_relocate_section ppc_elf_relocate_section
8064 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8065 #define elf_backend_check_relocs ppc_elf_check_relocs
8066 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8067 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8068 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8069 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8070 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8071 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8072 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8073 #define elf_backend_fake_sections ppc_elf_fake_sections
8074 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8075 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8076 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8077 #define elf_backend_write_core_note ppc_elf_write_core_note
8078 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8079 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8080 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8081 #define elf_backend_write_section ppc_elf_write_section
8082 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8083 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8084 #define elf_backend_action_discarded ppc_elf_action_discarded
8085 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8087 #include "elf32-target.h"
8089 /* VxWorks Target */
8091 #undef TARGET_LITTLE_SYM
8092 #undef TARGET_LITTLE_NAME
8094 #undef TARGET_BIG_SYM
8095 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8096 #undef TARGET_BIG_NAME
8097 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8099 /* VxWorks uses the elf default section flags for .plt. */
8100 static const struct bfd_elf_special_section *
8101 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8103 if (sec->name == NULL)
8106 if (strcmp (sec->name, ".plt") == 0)
8107 return _bfd_elf_get_sec_type_attr (abfd, sec);
8109 return ppc_elf_get_sec_type_attr (abfd, sec);
8112 /* Like ppc_elf_link_hash_table_create, but overrides
8113 appropriately for VxWorks. */
8114 static struct bfd_link_hash_table *
8115 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8117 struct bfd_link_hash_table *ret;
8119 ret = ppc_elf_link_hash_table_create (abfd);
8122 struct ppc_elf_link_hash_table *htab
8123 = (struct ppc_elf_link_hash_table *)ret;
8124 htab->is_vxworks = 1;
8125 htab->plt_type = PLT_VXWORKS;
8126 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8127 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8128 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8133 /* Tweak magic VxWorks symbols as they are loaded. */
8135 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8136 struct bfd_link_info *info,
8137 Elf_Internal_Sym *sym,
8138 const char **namep ATTRIBUTE_UNUSED,
8139 flagword *flagsp ATTRIBUTE_UNUSED,
8143 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8147 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8151 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8153 ppc_elf_final_write_processing(abfd, linker);
8154 elf_vxworks_final_write_processing(abfd, linker);
8157 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8159 #undef elf_backend_want_plt_sym
8160 #define elf_backend_want_plt_sym 1
8161 #undef elf_backend_want_got_plt
8162 #define elf_backend_want_got_plt 1
8163 #undef elf_backend_got_symbol_offset
8164 #define elf_backend_got_symbol_offset 0
8165 #undef elf_backend_plt_not_loaded
8166 #define elf_backend_plt_not_loaded 0
8167 #undef elf_backend_plt_readonly
8168 #define elf_backend_plt_readonly 1
8169 #undef elf_backend_got_header_size
8170 #define elf_backend_got_header_size 12
8172 #undef bfd_elf32_get_synthetic_symtab
8174 #undef bfd_elf32_bfd_link_hash_table_create
8175 #define bfd_elf32_bfd_link_hash_table_create \
8176 ppc_elf_vxworks_link_hash_table_create
8177 #undef elf_backend_add_symbol_hook
8178 #define elf_backend_add_symbol_hook \
8179 ppc_elf_vxworks_add_symbol_hook
8180 #undef elf_backend_link_output_symbol_hook
8181 #define elf_backend_link_output_symbol_hook \
8182 elf_vxworks_link_output_symbol_hook
8183 #undef elf_backend_final_write_processing
8184 #define elf_backend_final_write_processing \
8185 ppc_elf_vxworks_final_write_processing
8186 #undef elf_backend_get_sec_type_attr
8187 #define elf_backend_get_sec_type_attr \
8188 ppc_elf_vxworks_get_sec_type_attr
8189 #undef elf_backend_emit_relocs
8190 #define elf_backend_emit_relocs \
8191 elf_vxworks_emit_relocs
8194 #define elf32_bed ppc_elf_vxworks_bed
8196 #include "elf32-target.h"
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