1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
34 #include "elf32-ppc.h"
35 #include "elf-vxworks.h"
37 /* RELA relocations are used here. */
39 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc_elf_unhandled_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 /* Branch prediction bit for branch taken relocs. */
45 #define BRANCH_PREDICT_BIT 0x200000
46 /* Mask to set RA in memory instructions. */
47 #define RA_REGISTER_MASK 0x001f0000
48 /* Value to shift register by to insert RA. */
49 #define RA_REGISTER_SHIFT 16
51 /* The name of the dynamic interpreter. This is put in the .interp
53 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
55 /* For old-style PLT. */
56 /* The number of single-slot PLT entries (the rest use two slots). */
57 #define PLT_NUM_SINGLE_ENTRIES 8192
59 /* For new-style .glink and .plt. */
60 #define GLINK_PLTRESOLVE 16*4
61 #define GLINK_ENTRY_SIZE 4*4
63 /* VxWorks uses its own plt layout, filled in by the static linker. */
65 /* The standard VxWorks PLT entry. */
66 #define VXWORKS_PLT_ENTRY_SIZE 32
67 static const bfd_vma ppc_elf_vxworks_plt_entry
68 [VXWORKS_PLT_ENTRY_SIZE / 4] =
70 0x3d800000, /* lis r12,0 */
71 0x818c0000, /* lwz r12,0(r12) */
72 0x7d8903a6, /* mtctr r12 */
73 0x4e800420, /* bctr */
74 0x39600000, /* li r11,0 */
75 0x48000000, /* b 14 <.PLT0resolve+0x4> */
79 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
80 [VXWORKS_PLT_ENTRY_SIZE / 4] =
82 0x3d9e0000, /* addis r12,r30,0 */
83 0x818c0000, /* lwz r12,0(r12) */
84 0x7d8903a6, /* mtctr r12 */
85 0x4e800420, /* bctr */
86 0x39600000, /* li r11,0 */
87 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
92 /* The initial VxWorks PLT entry. */
93 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
94 static const bfd_vma ppc_elf_vxworks_plt0_entry
95 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
97 0x3d800000, /* lis r12,0 */
98 0x398c0000, /* addi r12,r12,0 */
99 0x800c0008, /* lwz r0,8(r12) */
100 0x7c0903a6, /* mtctr r0 */
101 0x818c0004, /* lwz r12,4(r12) */
102 0x4e800420, /* bctr */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
106 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
107 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
109 0x819e0008, /* lwz r12,8(r30) */
110 0x7d8903a6, /* mtctr r12 */
111 0x819e0004, /* lwz r12,4(r30) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
119 /* For executables, we have some additional relocations in
120 .rela.plt.unloaded, for the kernel loader. */
122 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
123 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
124 /* The number of relocations in the PLTResolve slot. */
125 #define VXWORKS_PLTRESOLVE_RELOCS 2
126 /* The number of relocations in the PLTResolve slot when when creating
128 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
130 /* Some instructions. */
131 #define ADDIS_11_11 0x3d6b0000
132 #define ADDIS_11_30 0x3d7e0000
133 #define ADDIS_12_12 0x3d8c0000
134 #define ADDI_11_11 0x396b0000
135 #define ADD_0_11_11 0x7c0b5a14
136 #define ADD_11_0_11 0x7d605a14
138 #define BCL_20_31 0x429f0005
139 #define BCTR 0x4e800420
140 #define LIS_11 0x3d600000
141 #define LIS_12 0x3d800000
142 #define LWZU_0_12 0x840c0000
143 #define LWZ_0_12 0x800c0000
144 #define LWZ_11_11 0x816b0000
145 #define LWZ_11_30 0x817e0000
146 #define LWZ_12_12 0x818c0000
147 #define MFLR_0 0x7c0802a6
148 #define MFLR_12 0x7d8802a6
149 #define MTCTR_0 0x7c0903a6
150 #define MTCTR_11 0x7d6903a6
151 #define MTLR_0 0x7c0803a6
152 #define NOP 0x60000000
153 #define SUB_11_11_12 0x7d6c5850
155 /* Offset of tp and dtp pointers from start of TLS block. */
156 #define TP_OFFSET 0x7000
157 #define DTP_OFFSET 0x8000
159 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
161 static reloc_howto_type ppc_elf_howto_raw[] = {
162 /* This reloc does nothing. */
163 HOWTO (R_PPC_NONE, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE, /* pc_relative */
169 complain_overflow_bitfield, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_PPC_NONE", /* name */
172 FALSE, /* partial_inplace */
175 FALSE), /* pcrel_offset */
177 /* A standard 32 bit relocation. */
178 HOWTO (R_PPC_ADDR32, /* type */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
182 FALSE, /* pc_relative */
184 complain_overflow_bitfield, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_PPC_ADDR32", /* name */
187 FALSE, /* partial_inplace */
189 0xffffffff, /* dst_mask */
190 FALSE), /* pcrel_offset */
192 /* An absolute 26 bit branch; the lower two bits must be zero.
193 FIXME: we don't check that, we just clear them. */
194 HOWTO (R_PPC_ADDR24, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR24", /* name */
203 FALSE, /* partial_inplace */
205 0x3fffffc, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 /* A standard 16 bit relocation. */
209 HOWTO (R_PPC_ADDR16, /* type */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
213 FALSE, /* pc_relative */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR16", /* name */
218 FALSE, /* partial_inplace */
220 0xffff, /* dst_mask */
221 FALSE), /* pcrel_offset */
223 /* A 16 bit relocation without overflow. */
224 HOWTO (R_PPC_ADDR16_LO, /* type */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE, /* pc_relative */
230 complain_overflow_dont,/* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR16_LO", /* name */
233 FALSE, /* partial_inplace */
235 0xffff, /* dst_mask */
236 FALSE), /* pcrel_offset */
238 /* The high order 16 bits of an address. */
239 HOWTO (R_PPC_ADDR16_HI, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE, /* pc_relative */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16_HI", /* name */
248 FALSE, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
253 /* The high order 16 bits of an address, plus 1 if the contents of
254 the low 16 bits, treated as a signed number, is negative. */
255 HOWTO (R_PPC_ADDR16_HA, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_dont, /* complain_on_overflow */
262 ppc_elf_addr16_ha_reloc, /* special_function */
263 "R_PPC_ADDR16_HA", /* name */
264 FALSE, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE), /* pcrel_offset */
269 /* An absolute 16 bit branch; the lower two bits must be zero.
270 FIXME: we don't check that, we just clear them. */
271 HOWTO (R_PPC_ADDR14, /* type */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_bitfield, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR14", /* name */
280 FALSE, /* partial_inplace */
282 0xfffc, /* dst_mask */
283 FALSE), /* pcrel_offset */
285 /* An absolute 16 bit branch, for which bit 10 should be set to
286 indicate that the branch is expected to be taken. The lower two
287 bits must be zero. */
288 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE, /* pc_relative */
294 complain_overflow_bitfield, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC_ADDR14_BRTAKEN",/* name */
297 FALSE, /* partial_inplace */
299 0xfffc, /* dst_mask */
300 FALSE), /* pcrel_offset */
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is not expected to be taken. The lower
304 two bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC_ADDR14_BRNTAKEN",/* name */
314 FALSE, /* partial_inplace */
316 0xfffc, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A relative 26 bit branch; the lower two bits must be zero. */
320 HOWTO (R_PPC_REL24, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 TRUE, /* pc_relative */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_REL24", /* name */
329 FALSE, /* partial_inplace */
331 0x3fffffc, /* dst_mask */
332 TRUE), /* pcrel_offset */
334 /* A relative 16 bit branch; the lower two bits must be zero. */
335 HOWTO (R_PPC_REL14, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 TRUE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_REL14", /* name */
344 FALSE, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 TRUE), /* pcrel_offset */
349 /* A relative 16 bit branch. Bit 10 should be set to indicate that
350 the branch is expected to be taken. The lower two bits must be
352 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 TRUE, /* pc_relative */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL14_BRTAKEN", /* name */
361 FALSE, /* partial_inplace */
363 0xfffc, /* dst_mask */
364 TRUE), /* pcrel_offset */
366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
367 the branch is not expected to be taken. The lower two bits must
369 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE, /* pc_relative */
375 complain_overflow_signed, /* complain_on_overflow */
376 bfd_elf_generic_reloc, /* special_function */
377 "R_PPC_REL14_BRNTAKEN",/* name */
378 FALSE, /* partial_inplace */
380 0xfffc, /* dst_mask */
381 TRUE), /* pcrel_offset */
383 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
385 HOWTO (R_PPC_GOT16, /* type */
387 1, /* size (0 = byte, 1 = short, 2 = long) */
389 FALSE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_GOT16", /* name */
394 FALSE, /* partial_inplace */
396 0xffff, /* dst_mask */
397 FALSE), /* pcrel_offset */
399 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
401 HOWTO (R_PPC_GOT16_LO, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16_LO", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_HI, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE, /* pc_relative */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_HI", /* name */
426 FALSE, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HA, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE, /* pc_relative */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 ppc_elf_addr16_ha_reloc, /* special_function */
441 "R_PPC_GOT16_HA", /* name */
442 FALSE, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
447 /* Like R_PPC_REL24, but referring to the procedure linkage table
448 entry for the symbol. */
449 HOWTO (R_PPC_PLTREL24, /* type */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
453 TRUE, /* pc_relative */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_PPC_PLTREL24", /* name */
458 FALSE, /* partial_inplace */
460 0x3fffffc, /* dst_mask */
461 TRUE), /* pcrel_offset */
463 /* This is used only by the dynamic linker. The symbol should exist
464 both in the object being run and in some shared library. The
465 dynamic linker copies the data addressed by the symbol from the
466 shared library into the object, because the object being
467 run has to have the data at some particular address. */
468 HOWTO (R_PPC_COPY, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_bitfield, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_PPC_COPY", /* name */
477 FALSE, /* partial_inplace */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC_ADDR32, but used when setting global offset table
484 HOWTO (R_PPC_GLOB_DAT, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_GLOB_DAT", /* name */
493 FALSE, /* partial_inplace */
495 0xffffffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Marks a procedure linkage table entry for a symbol. */
499 HOWTO (R_PPC_JMP_SLOT, /* type */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE, /* pc_relative */
505 complain_overflow_bitfield, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_PPC_JMP_SLOT", /* name */
508 FALSE, /* partial_inplace */
511 FALSE), /* pcrel_offset */
513 /* Used only by the dynamic linker. When the object is run, this
514 longword is set to the load address of the object, plus the
516 HOWTO (R_PPC_RELATIVE, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE, /* pc_relative */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_RELATIVE", /* name */
525 FALSE, /* partial_inplace */
527 0xffffffff, /* dst_mask */
528 FALSE), /* pcrel_offset */
530 /* Like R_PPC_REL24, but uses the value of the symbol within the
531 object rather than the final value. Normally used for
532 _GLOBAL_OFFSET_TABLE_. */
533 HOWTO (R_PPC_LOCAL24PC, /* type */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
537 TRUE, /* pc_relative */
539 complain_overflow_signed, /* complain_on_overflow */
540 bfd_elf_generic_reloc, /* special_function */
541 "R_PPC_LOCAL24PC", /* name */
542 FALSE, /* partial_inplace */
544 0x3fffffc, /* dst_mask */
545 TRUE), /* pcrel_offset */
547 /* Like R_PPC_ADDR32, but may be unaligned. */
548 HOWTO (R_PPC_UADDR32, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 FALSE, /* pc_relative */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_UADDR32", /* name */
557 FALSE, /* partial_inplace */
559 0xffffffff, /* dst_mask */
560 FALSE), /* pcrel_offset */
562 /* Like R_PPC_ADDR16, but may be unaligned. */
563 HOWTO (R_PPC_UADDR16, /* type */
565 1, /* size (0 = byte, 1 = short, 2 = long) */
567 FALSE, /* pc_relative */
569 complain_overflow_bitfield, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_UADDR16", /* name */
572 FALSE, /* partial_inplace */
574 0xffff, /* dst_mask */
575 FALSE), /* pcrel_offset */
577 /* 32-bit PC relative */
578 HOWTO (R_PPC_REL32, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 TRUE, /* pc_relative */
584 complain_overflow_bitfield, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_REL32", /* name */
587 FALSE, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 TRUE), /* pcrel_offset */
592 /* 32-bit relocation to the symbol's procedure linkage table.
593 FIXME: not supported. */
594 HOWTO (R_PPC_PLT32, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE, /* pc_relative */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_PLT32", /* name */
603 FALSE, /* partial_inplace */
606 FALSE), /* pcrel_offset */
608 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLTREL32, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 TRUE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLTREL32", /* name */
619 FALSE, /* partial_inplace */
622 TRUE), /* pcrel_offset */
624 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
626 HOWTO (R_PPC_PLT16_LO, /* type */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE, /* pc_relative */
632 complain_overflow_dont, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLT16_LO", /* name */
635 FALSE, /* partial_inplace */
637 0xffff, /* dst_mask */
638 FALSE), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_HI, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_HI", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HA, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE, /* pc_relative */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 ppc_elf_addr16_ha_reloc, /* special_function */
666 "R_PPC_PLT16_HA", /* name */
667 FALSE, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
672 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
674 HOWTO (R_PPC_SDAREL16, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE, /* pc_relative */
680 complain_overflow_signed, /* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_PPC_SDAREL16", /* name */
683 FALSE, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
688 /* 16-bit section relative relocation. */
689 HOWTO (R_PPC_SECTOFF, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_bitfield, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC_SECTOFF", /* name */
698 FALSE, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 /* 16-bit lower half section relative relocation. */
704 HOWTO (R_PPC_SECTOFF_LO, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC_SECTOFF_LO", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* 16-bit upper half section relative relocation. */
719 HOWTO (R_PPC_SECTOFF_HI, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE, /* pc_relative */
725 complain_overflow_bitfield, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC_SECTOFF_HI", /* name */
728 FALSE, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE), /* pcrel_offset */
733 /* 16-bit upper half adjusted section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_HA, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE, /* pc_relative */
740 complain_overflow_bitfield, /* complain_on_overflow */
741 ppc_elf_addr16_ha_reloc, /* special_function */
742 "R_PPC_SECTOFF_HA", /* name */
743 FALSE, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE), /* pcrel_offset */
748 /* Marker reloc for TLS. */
751 2, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE, /* pc_relative */
755 complain_overflow_dont, /* complain_on_overflow */
756 bfd_elf_generic_reloc, /* special_function */
757 "R_PPC_TLS", /* name */
758 FALSE, /* partial_inplace */
761 FALSE), /* pcrel_offset */
763 /* Computes the load module index of the load module that contains the
764 definition of its TLS sym. */
765 HOWTO (R_PPC_DTPMOD32,
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc, /* special_function */
773 "R_PPC_DTPMOD32", /* name */
774 FALSE, /* partial_inplace */
776 0xffffffff, /* dst_mask */
777 FALSE), /* pcrel_offset */
779 /* Computes a dtv-relative displacement, the difference between the value
780 of sym+add and the base address of the thread-local storage block that
781 contains the definition of sym, minus 0x8000. */
782 HOWTO (R_PPC_DTPREL32,
784 2, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE, /* pc_relative */
788 complain_overflow_dont, /* complain_on_overflow */
789 ppc_elf_unhandled_reloc, /* special_function */
790 "R_PPC_DTPREL32", /* name */
791 FALSE, /* partial_inplace */
793 0xffffffff, /* dst_mask */
794 FALSE), /* pcrel_offset */
796 /* A 16 bit dtprel reloc. */
797 HOWTO (R_PPC_DTPREL16,
799 1, /* size (0 = byte, 1 = short, 2 = long) */
801 FALSE, /* pc_relative */
803 complain_overflow_signed, /* complain_on_overflow */
804 ppc_elf_unhandled_reloc, /* special_function */
805 "R_PPC_DTPREL16", /* name */
806 FALSE, /* partial_inplace */
808 0xffff, /* dst_mask */
809 FALSE), /* pcrel_offset */
811 /* Like DTPREL16, but no overflow. */
812 HOWTO (R_PPC_DTPREL16_LO,
814 1, /* size (0 = byte, 1 = short, 2 = long) */
816 FALSE, /* pc_relative */
818 complain_overflow_dont, /* complain_on_overflow */
819 ppc_elf_unhandled_reloc, /* special_function */
820 "R_PPC_DTPREL16_LO", /* name */
821 FALSE, /* partial_inplace */
823 0xffff, /* dst_mask */
824 FALSE), /* pcrel_offset */
826 /* Like DTPREL16_LO, but next higher group of 16 bits. */
827 HOWTO (R_PPC_DTPREL16_HI,
829 1, /* size (0 = byte, 1 = short, 2 = long) */
831 FALSE, /* pc_relative */
833 complain_overflow_dont, /* complain_on_overflow */
834 ppc_elf_unhandled_reloc, /* special_function */
835 "R_PPC_DTPREL16_HI", /* name */
836 FALSE, /* partial_inplace */
838 0xffff, /* dst_mask */
839 FALSE), /* pcrel_offset */
841 /* Like DTPREL16_HI, but adjust for low 16 bits. */
842 HOWTO (R_PPC_DTPREL16_HA,
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE, /* pc_relative */
848 complain_overflow_dont, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc, /* special_function */
850 "R_PPC_DTPREL16_HA", /* name */
851 FALSE, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
856 /* Computes a tp-relative displacement, the difference between the value of
857 sym+add and the value of the thread pointer (r13). */
858 HOWTO (R_PPC_TPREL32,
860 2, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE, /* pc_relative */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc, /* special_function */
866 "R_PPC_TPREL32", /* name */
867 FALSE, /* partial_inplace */
869 0xffffffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
872 /* A 16 bit tprel reloc. */
873 HOWTO (R_PPC_TPREL16,
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE, /* pc_relative */
879 complain_overflow_signed, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_TPREL16", /* name */
882 FALSE, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Like TPREL16, but no overflow. */
888 HOWTO (R_PPC_TPREL16_LO,
890 1, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE, /* pc_relative */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_TPREL16_LO", /* name */
897 FALSE, /* partial_inplace */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
902 /* Like TPREL16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_TPREL16_HI,
905 1, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE, /* pc_relative */
909 complain_overflow_dont, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc, /* special_function */
911 "R_PPC_TPREL16_HI", /* name */
912 FALSE, /* partial_inplace */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
917 /* Like TPREL16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_TPREL16_HA,
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_TPREL16_HA", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
934 to the first entry. */
935 HOWTO (R_PPC_GOT_TLSGD16,
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_signed, /* complain_on_overflow */
942 ppc_elf_unhandled_reloc, /* special_function */
943 "R_PPC_GOT_TLSGD16", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* Like GOT_TLSGD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSGD16_LO,
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 FALSE, /* pc_relative */
956 complain_overflow_dont, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc, /* special_function */
958 "R_PPC_GOT_TLSGD16_LO", /* name */
959 FALSE, /* partial_inplace */
961 0xffff, /* dst_mask */
962 FALSE), /* pcrel_offset */
964 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSGD16_HI,
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE, /* pc_relative */
971 complain_overflow_dont, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc, /* special_function */
973 "R_PPC_GOT_TLSGD16_HI", /* name */
974 FALSE, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
979 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSGD16_HA,
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE, /* pc_relative */
986 complain_overflow_dont, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc, /* special_function */
988 "R_PPC_GOT_TLSGD16_HA", /* name */
989 FALSE, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
994 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
995 with values (sym+add)@dtpmod and zero, and computes the offset to the
997 HOWTO (R_PPC_GOT_TLSLD16,
999 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE, /* pc_relative */
1003 complain_overflow_signed, /* complain_on_overflow */
1004 ppc_elf_unhandled_reloc, /* special_function */
1005 "R_PPC_GOT_TLSLD16", /* name */
1006 FALSE, /* partial_inplace */
1008 0xffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1011 /* Like GOT_TLSLD16, but no overflow. */
1012 HOWTO (R_PPC_GOT_TLSLD16_LO,
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 FALSE, /* pc_relative */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc_elf_unhandled_reloc, /* special_function */
1020 "R_PPC_GOT_TLSLD16_LO", /* name */
1021 FALSE, /* partial_inplace */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1026 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1027 HOWTO (R_PPC_GOT_TLSLD16_HI,
1028 16, /* rightshift */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE, /* pc_relative */
1033 complain_overflow_dont, /* complain_on_overflow */
1034 ppc_elf_unhandled_reloc, /* special_function */
1035 "R_PPC_GOT_TLSLD16_HI", /* name */
1036 FALSE, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE), /* pcrel_offset */
1041 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1042 HOWTO (R_PPC_GOT_TLSLD16_HA,
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc_elf_unhandled_reloc, /* special_function */
1050 "R_PPC_GOT_TLSLD16_HA", /* name */
1051 FALSE, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1057 the offset to the entry. */
1058 HOWTO (R_PPC_GOT_DTPREL16,
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_signed, /* complain_on_overflow */
1065 ppc_elf_unhandled_reloc, /* special_function */
1066 "R_PPC_GOT_DTPREL16", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like GOT_DTPREL16, but no overflow. */
1073 HOWTO (R_PPC_GOT_DTPREL16_LO,
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc, /* special_function */
1081 "R_PPC_GOT_DTPREL16_LO", /* name */
1082 FALSE, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1088 HOWTO (R_PPC_GOT_DTPREL16_HI,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc, /* special_function */
1096 "R_PPC_GOT_DTPREL16_HI", /* name */
1097 FALSE, /* partial_inplace */
1099 0xffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1103 HOWTO (R_PPC_GOT_DTPREL16_HA,
1104 16, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc_elf_unhandled_reloc, /* special_function */
1111 "R_PPC_GOT_DTPREL16_HA", /* name */
1112 FALSE, /* partial_inplace */
1114 0xffff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1118 offset to the entry. */
1119 HOWTO (R_PPC_GOT_TPREL16,
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_signed, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc, /* special_function */
1127 "R_PPC_GOT_TPREL16", /* name */
1128 FALSE, /* partial_inplace */
1130 0xffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like GOT_TPREL16, but no overflow. */
1134 HOWTO (R_PPC_GOT_TPREL16_LO,
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_dont, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc, /* special_function */
1142 "R_PPC_GOT_TPREL16_LO", /* name */
1143 FALSE, /* partial_inplace */
1145 0xffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1149 HOWTO (R_PPC_GOT_TPREL16_HI,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc, /* special_function */
1157 "R_PPC_GOT_TPREL16_HI", /* name */
1158 FALSE, /* partial_inplace */
1160 0xffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1164 HOWTO (R_PPC_GOT_TPREL16_HA,
1165 16, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_dont, /* complain_on_overflow */
1171 ppc_elf_unhandled_reloc, /* special_function */
1172 "R_PPC_GOT_TPREL16_HA", /* name */
1173 FALSE, /* partial_inplace */
1175 0xffff, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* The remaining relocs are from the Embedded ELF ABI, and are not
1179 in the SVR4 ELF ABI. */
1181 /* 32 bit value resulting from the addend minus the symbol. */
1182 HOWTO (R_PPC_EMB_NADDR32, /* type */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE, /* pc_relative */
1188 complain_overflow_bitfield, /* complain_on_overflow */
1189 bfd_elf_generic_reloc, /* special_function */
1190 "R_PPC_EMB_NADDR32", /* name */
1191 FALSE, /* partial_inplace */
1193 0xffffffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1196 /* 16 bit value resulting from the addend minus the symbol. */
1197 HOWTO (R_PPC_EMB_NADDR16, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_bitfield, /* complain_on_overflow */
1204 bfd_elf_generic_reloc, /* special_function */
1205 "R_PPC_EMB_NADDR16", /* name */
1206 FALSE, /* partial_inplace */
1208 0xffff, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* 16 bit value resulting from the addend minus the symbol. */
1212 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE, /* pc_relative */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC_EMB_ADDR16_LO", /* name */
1221 FALSE, /* partial_inplace */
1223 0xffff, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1226 /* The high order 16 bits of the addend minus the symbol. */
1227 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1228 16, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 "R_PPC_EMB_NADDR16_HI", /* name */
1236 FALSE, /* partial_inplace */
1238 0xffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* The high order 16 bits of the result of the addend minus the address,
1242 plus 1 if the contents of the low 16 bits, treated as a signed number,
1244 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1245 16, /* rightshift */
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 FALSE, /* pc_relative */
1250 complain_overflow_dont, /* complain_on_overflow */
1251 ppc_elf_addr16_ha_reloc, /* special_function */
1252 "R_PPC_EMB_NADDR16_HA", /* name */
1253 FALSE, /* partial_inplace */
1255 0xffff, /* dst_mask */
1256 FALSE), /* pcrel_offset */
1258 /* 16 bit value resulting from allocating a 4 byte word to hold an
1259 address in the .sdata section, and returning the offset from
1260 _SDA_BASE_ for that relocation. */
1261 HOWTO (R_PPC_EMB_SDAI16, /* type */
1263 1, /* size (0 = byte, 1 = short, 2 = long) */
1265 FALSE, /* pc_relative */
1267 complain_overflow_bitfield, /* complain_on_overflow */
1268 bfd_elf_generic_reloc, /* special_function */
1269 "R_PPC_EMB_SDAI16", /* name */
1270 FALSE, /* partial_inplace */
1272 0xffff, /* dst_mask */
1273 FALSE), /* pcrel_offset */
1275 /* 16 bit value resulting from allocating a 4 byte word to hold an
1276 address in the .sdata2 section, and returning the offset from
1277 _SDA2_BASE_ for that relocation. */
1278 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE, /* pc_relative */
1284 complain_overflow_bitfield, /* complain_on_overflow */
1285 bfd_elf_generic_reloc, /* special_function */
1286 "R_PPC_EMB_SDA2I16", /* name */
1287 FALSE, /* partial_inplace */
1289 0xffff, /* dst_mask */
1290 FALSE), /* pcrel_offset */
1292 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1293 small data items. */
1294 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1296 1, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_signed, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC_EMB_SDA2REL", /* name */
1303 FALSE, /* partial_inplace */
1305 0xffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1308 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1309 signed offset from the appropriate base, and filling in the register
1310 field with the appropriate register (0, 2, or 13). */
1311 HOWTO (R_PPC_EMB_SDA21, /* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_signed, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_PPC_EMB_SDA21", /* name */
1320 FALSE, /* partial_inplace */
1322 0xffff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1325 /* Relocation not handled: R_PPC_EMB_MRKREF */
1326 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1327 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1328 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1330 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1332 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1333 in the 16 bit signed offset from the appropriate base, and filling in the
1334 register field with the appropriate register (0, 2, or 13). */
1335 HOWTO (R_PPC_EMB_RELSDA, /* type */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 TRUE, /* pc_relative */
1341 complain_overflow_signed, /* complain_on_overflow */
1342 bfd_elf_generic_reloc, /* special_function */
1343 "R_PPC_EMB_RELSDA", /* name */
1344 FALSE, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1349 /* A 16 bit relative relocation. */
1350 HOWTO (R_PPC_REL16, /* type */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 TRUE, /* pc_relative */
1356 complain_overflow_bitfield, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_REL16", /* name */
1359 FALSE, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 TRUE), /* pcrel_offset */
1364 /* A 16 bit relative relocation without overflow. */
1365 HOWTO (R_PPC_REL16_LO, /* type */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 TRUE, /* pc_relative */
1371 complain_overflow_dont,/* complain_on_overflow */
1372 bfd_elf_generic_reloc, /* special_function */
1373 "R_PPC_REL16_LO", /* name */
1374 FALSE, /* partial_inplace */
1376 0xffff, /* dst_mask */
1377 TRUE), /* pcrel_offset */
1379 /* The high order 16 bits of a relative address. */
1380 HOWTO (R_PPC_REL16_HI, /* type */
1381 16, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 TRUE, /* pc_relative */
1386 complain_overflow_dont, /* complain_on_overflow */
1387 bfd_elf_generic_reloc, /* special_function */
1388 "R_PPC_REL16_HI", /* name */
1389 FALSE, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 TRUE), /* pcrel_offset */
1394 /* The high order 16 bits of a relative address, plus 1 if the contents of
1395 the low 16 bits, treated as a signed number, is negative. */
1396 HOWTO (R_PPC_REL16_HA, /* type */
1397 16, /* rightshift */
1398 1, /* size (0 = byte, 1 = short, 2 = long) */
1400 TRUE, /* pc_relative */
1402 complain_overflow_dont, /* complain_on_overflow */
1403 ppc_elf_addr16_ha_reloc, /* special_function */
1404 "R_PPC_REL16_HA", /* name */
1405 FALSE, /* partial_inplace */
1407 0xffff, /* dst_mask */
1408 TRUE), /* pcrel_offset */
1410 /* GNU extension to record C++ vtable hierarchy. */
1411 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 NULL, /* special_function */
1419 "R_PPC_GNU_VTINHERIT", /* name */
1420 FALSE, /* partial_inplace */
1423 FALSE), /* pcrel_offset */
1425 /* GNU extension to record C++ vtable member usage. */
1426 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1428 0, /* size (0 = byte, 1 = short, 2 = long) */
1430 FALSE, /* pc_relative */
1432 complain_overflow_dont, /* complain_on_overflow */
1433 NULL, /* special_function */
1434 "R_PPC_GNU_VTENTRY", /* name */
1435 FALSE, /* partial_inplace */
1438 FALSE), /* pcrel_offset */
1440 /* Phony reloc to handle AIX style TOC entries. */
1441 HOWTO (R_PPC_TOC16, /* type */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 FALSE, /* pc_relative */
1447 complain_overflow_signed, /* complain_on_overflow */
1448 bfd_elf_generic_reloc, /* special_function */
1449 "R_PPC_TOC16", /* name */
1450 FALSE, /* partial_inplace */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1456 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1459 ppc_elf_howto_init (void)
1461 unsigned int i, type;
1464 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1467 type = ppc_elf_howto_raw[i].type;
1468 if (type >= (sizeof (ppc_elf_howto_table)
1469 / sizeof (ppc_elf_howto_table[0])))
1471 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1475 static reloc_howto_type *
1476 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1477 bfd_reloc_code_real_type code)
1479 enum elf_ppc_reloc_type r;
1481 /* Initialize howto table if not already done. */
1482 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1483 ppc_elf_howto_init ();
1490 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1491 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1492 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1493 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1494 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1495 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1496 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1497 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1498 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1499 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1500 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1501 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1502 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1503 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1504 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1505 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1506 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1507 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1508 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1509 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1510 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1511 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1512 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1513 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1514 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1515 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1516 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1517 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1518 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1519 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1520 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1521 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1522 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1523 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1524 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1525 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1526 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1527 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1528 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1529 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1530 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1531 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1532 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1533 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1534 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1535 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1536 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1537 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1541 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1545 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1549 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1553 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1554 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1558 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1559 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1560 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1561 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1562 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1563 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1564 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1565 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1567 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1568 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1569 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1570 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1571 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1572 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1573 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1574 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1577 return ppc_elf_howto_table[r];
1580 /* Set the howto pointer for a PowerPC ELF reloc. */
1583 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1585 Elf_Internal_Rela *dst)
1587 /* Initialize howto table if not already done. */
1588 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1589 ppc_elf_howto_init ();
1591 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1592 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1595 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1597 static bfd_reloc_status_type
1598 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1599 arelent *reloc_entry,
1601 void *data ATTRIBUTE_UNUSED,
1602 asection *input_section,
1604 char **error_message ATTRIBUTE_UNUSED)
1608 if (output_bfd != NULL)
1610 reloc_entry->address += input_section->output_offset;
1611 return bfd_reloc_ok;
1614 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1615 return bfd_reloc_outofrange;
1617 if (bfd_is_com_section (symbol->section))
1620 relocation = symbol->value;
1622 relocation += symbol->section->output_section->vma;
1623 relocation += symbol->section->output_offset;
1624 relocation += reloc_entry->addend;
1625 if (reloc_entry->howto->pc_relative)
1626 relocation -= reloc_entry->address;
1628 reloc_entry->addend += (relocation & 0x8000) << 1;
1630 return bfd_reloc_continue;
1633 static bfd_reloc_status_type
1634 ppc_elf_unhandled_reloc (bfd *abfd,
1635 arelent *reloc_entry,
1638 asection *input_section,
1640 char **error_message)
1642 /* If this is a relocatable link (output_bfd test tells us), just
1643 call the generic function. Any adjustment will be done at final
1645 if (output_bfd != NULL)
1646 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1647 input_section, output_bfd, error_message);
1649 if (error_message != NULL)
1651 static char buf[60];
1652 sprintf (buf, _("generic linker can't handle %s"),
1653 reloc_entry->howto->name);
1654 *error_message = buf;
1656 return bfd_reloc_dangerous;
1659 /* Sections created by the linker. */
1661 typedef struct elf_linker_section
1663 /* Pointer to the bfd section. */
1667 /* Associated bss section name. */
1668 const char *bss_name;
1669 /* Associated symbol name. */
1670 const char *sym_name;
1671 /* Associated symbol. */
1672 struct elf_link_hash_entry *sym;
1673 } elf_linker_section_t;
1675 /* Linked list of allocated pointer entries. This hangs off of the
1676 symbol lists, and provides allows us to return different pointers,
1677 based on different addend's. */
1679 typedef struct elf_linker_section_pointers
1681 /* next allocated pointer for this symbol */
1682 struct elf_linker_section_pointers *next;
1683 /* offset of pointer from beginning of section */
1687 /* which linker section this is */
1688 elf_linker_section_t *lsect;
1689 } elf_linker_section_pointers_t;
1691 struct ppc_elf_obj_tdata
1693 struct elf_obj_tdata elf;
1695 /* A mapping from local symbols to offsets into the various linker
1696 sections added. This is index by the symbol index. */
1697 elf_linker_section_pointers_t **linker_section_pointers;
1700 #define ppc_elf_tdata(bfd) \
1701 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1703 #define elf_local_ptr_offsets(bfd) \
1704 (ppc_elf_tdata (bfd)->linker_section_pointers)
1706 /* Override the generic function because we store some extras. */
1709 ppc_elf_mkobject (bfd *abfd)
1711 if (abfd->tdata.any == NULL)
1713 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1714 abfd->tdata.any = bfd_zalloc (abfd, amt);
1715 if (abfd->tdata.any == NULL)
1718 return bfd_elf_mkobject (abfd);
1721 /* Fix bad default arch selected for a 32 bit input bfd when the
1722 default is 64 bit. */
1725 ppc_elf_object_p (bfd *abfd)
1727 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1729 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1731 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1733 /* Relies on arch after 64 bit default being 32 bit default. */
1734 abfd->arch_info = abfd->arch_info->next;
1735 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1741 /* Function to set whether a module needs the -mrelocatable bit set. */
1744 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1746 BFD_ASSERT (!elf_flags_init (abfd)
1747 || elf_elfheader (abfd)->e_flags == flags);
1749 elf_elfheader (abfd)->e_flags = flags;
1750 elf_flags_init (abfd) = TRUE;
1754 /* Support for core dump NOTE sections. */
1757 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1762 switch (note->descsz)
1767 case 268: /* Linux/PPC. */
1769 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1772 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1781 /* Make a ".reg/999" section. */
1782 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1783 size, note->descpos + offset);
1787 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1789 switch (note->descsz)
1794 case 128: /* Linux/PPC elf_prpsinfo. */
1795 elf_tdata (abfd)->core_program
1796 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1797 elf_tdata (abfd)->core_command
1798 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1801 /* Note that for some reason, a spurious space is tacked
1802 onto the end of the args in some (at least one anyway)
1803 implementations, so strip it off if it exists. */
1806 char *command = elf_tdata (abfd)->core_command;
1807 int n = strlen (command);
1809 if (0 < n && command[n - 1] == ' ')
1810 command[n - 1] = '\0';
1816 /* Return address for Ith PLT stub in section PLT, for relocation REL
1817 or (bfd_vma) -1 if it should not be included. */
1820 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1821 const asection *plt ATTRIBUTE_UNUSED,
1824 return rel->address;
1827 /* Handle a PowerPC specific section when reading an object file. This
1828 is called when bfd_section_from_shdr finds a section with an unknown
1832 ppc_elf_section_from_shdr (bfd *abfd,
1833 Elf_Internal_Shdr *hdr,
1840 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1843 newsect = hdr->bfd_section;
1844 flags = bfd_get_section_flags (abfd, newsect);
1845 if (hdr->sh_flags & SHF_EXCLUDE)
1846 flags |= SEC_EXCLUDE;
1848 if (hdr->sh_type == SHT_ORDERED)
1849 flags |= SEC_SORT_ENTRIES;
1851 bfd_set_section_flags (abfd, newsect, flags);
1855 /* Set up any other section flags and such that may be necessary. */
1858 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1859 Elf_Internal_Shdr *shdr,
1862 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1863 shdr->sh_flags |= SHF_EXCLUDE;
1865 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1866 shdr->sh_type = SHT_ORDERED;
1871 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1872 need to bump up the number of section headers. */
1875 ppc_elf_additional_program_headers (bfd *abfd,
1876 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1881 s = bfd_get_section_by_name (abfd, ".sbss2");
1882 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1885 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1886 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1892 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1893 .PPC.EMB.sbss0 a normal section, and not a bss section so
1894 that the linker doesn't crater when trying to make more than
1897 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1899 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1900 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1901 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1902 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1903 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1904 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1905 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1906 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1907 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1908 { NULL, 0, 0, 0, 0 }
1911 /* This is what we want for new plt/got. */
1912 static struct bfd_elf_special_section ppc_alt_plt =
1913 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1915 static const struct bfd_elf_special_section *
1916 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1918 const struct bfd_elf_special_section *ssect;
1920 /* See if this is one of the special sections. */
1921 if (sec->name == NULL)
1924 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1928 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1929 ssect = &ppc_alt_plt;
1933 return _bfd_elf_get_sec_type_attr (abfd, sec);
1936 /* Very simple linked list structure for recording apuinfo values. */
1937 typedef struct apuinfo_list
1939 struct apuinfo_list *next;
1940 unsigned long value;
1944 static apuinfo_list *head;
1948 apuinfo_list_init (void)
1954 apuinfo_list_add (unsigned long value)
1956 apuinfo_list *entry = head;
1958 while (entry != NULL)
1960 if (entry->value == value)
1962 entry = entry->next;
1965 entry = bfd_malloc (sizeof (* entry));
1969 entry->value = value;
1975 apuinfo_list_length (void)
1977 apuinfo_list *entry;
1978 unsigned long count;
1980 for (entry = head, count = 0;
1982 entry = entry->next)
1988 static inline unsigned long
1989 apuinfo_list_element (unsigned long number)
1991 apuinfo_list * entry;
1995 entry = entry->next)
1998 return entry ? entry->value : 0;
2002 apuinfo_list_finish (void)
2004 apuinfo_list *entry;
2006 for (entry = head; entry;)
2008 apuinfo_list *next = entry->next;
2016 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2017 #define APUINFO_LABEL "APUinfo"
2019 /* Scan the input BFDs and create a linked list of
2020 the APUinfo values that will need to be emitted. */
2023 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2028 unsigned num_input_sections;
2029 bfd_size_type output_section_size;
2031 unsigned num_entries;
2032 unsigned long offset;
2033 unsigned long length;
2034 const char *error_message = NULL;
2036 if (link_info == NULL)
2039 /* Scan the input bfds, looking for apuinfo sections. */
2040 num_input_sections = 0;
2041 output_section_size = 0;
2043 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2045 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2048 ++ num_input_sections;
2049 output_section_size += asec->size;
2053 /* We need at least one input sections
2054 in order to make merging worthwhile. */
2055 if (num_input_sections < 1)
2058 /* Just make sure that the output section exists as well. */
2059 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2063 /* Allocate a buffer for the contents of the input sections. */
2064 buffer = bfd_malloc (output_section_size);
2069 apuinfo_list_init ();
2071 /* Read in the input sections contents. */
2072 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2074 unsigned long datum;
2077 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2081 length = asec->size;
2084 error_message = _("corrupt or empty %s section in %B");
2088 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2089 || (bfd_bread (buffer + offset, length, ibfd) != length))
2091 error_message = _("unable to read in %s section from %B");
2095 /* Process the contents of the section. */
2096 ptr = buffer + offset;
2097 error_message = _("corrupt %s section in %B");
2099 /* Verify the contents of the header. Note - we have to
2100 extract the values this way in order to allow for a
2101 host whose endian-ness is different from the target. */
2102 datum = bfd_get_32 (ibfd, ptr);
2103 if (datum != sizeof APUINFO_LABEL)
2106 datum = bfd_get_32 (ibfd, ptr + 8);
2110 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2113 /* Get the number of bytes used for apuinfo entries. */
2114 datum = bfd_get_32 (ibfd, ptr + 4);
2115 if (datum + 20 != length)
2118 /* Make sure that we do not run off the end of the section. */
2119 if (offset + length > output_section_size)
2122 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2123 for (i = 0; i < datum; i += 4)
2124 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2126 /* Update the offset. */
2130 error_message = NULL;
2132 /* Compute the size of the output section. */
2133 num_entries = apuinfo_list_length ();
2134 output_section_size = 20 + num_entries * 4;
2136 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2138 if (! bfd_set_section_size (abfd, asec, output_section_size))
2140 error_message = _("warning: unable to set size of %s section in %B");
2146 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2149 /* Prevent the output section from accumulating the input sections'
2150 contents. We have already stored this in our linked list structure. */
2153 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2155 bfd_byte *contents ATTRIBUTE_UNUSED)
2157 return (apuinfo_list_length ()
2158 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2161 /* Finally we can generate the output section. */
2164 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2169 unsigned num_entries;
2170 bfd_size_type length;
2172 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2176 if (apuinfo_list_length () == 0)
2179 length = asec->size;
2183 buffer = bfd_malloc (length);
2186 (*_bfd_error_handler)
2187 (_("failed to allocate space for new APUinfo section."));
2191 /* Create the apuinfo header. */
2192 num_entries = apuinfo_list_length ();
2193 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2194 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2195 bfd_put_32 (abfd, 0x2, buffer + 8);
2196 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2199 for (i = 0; i < num_entries; i++)
2201 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2205 if (length != asec->size)
2206 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2208 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2209 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2213 apuinfo_list_finish ();
2216 /* The following functions are specific to the ELF linker, while
2217 functions above are used generally. They appear in this file more
2218 or less in the order in which they are called. eg.
2219 ppc_elf_check_relocs is called early in the link process,
2220 ppc_elf_finish_dynamic_sections is one of the last functions
2223 /* The PPC linker needs to keep track of the number of relocs that it
2224 decides to copy as dynamic relocs in check_relocs for each symbol.
2225 This is so that it can later discard them if they are found to be
2226 unnecessary. We store the information in a field extending the
2227 regular ELF linker hash table. */
2229 struct ppc_elf_dyn_relocs
2231 struct ppc_elf_dyn_relocs *next;
2233 /* The input section of the reloc. */
2236 /* Total number of relocs copied for the input section. */
2237 bfd_size_type count;
2239 /* Number of pc-relative relocs copied for the input section. */
2240 bfd_size_type pc_count;
2243 /* Track PLT entries needed for a given symbol. We might need more
2244 than one glink entry per symbol. */
2247 struct plt_entry *next;
2249 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2250 This field stores the offset into .got2 used to initialise the
2251 GOT pointer reg. It will always be at least 32768 (and for
2252 current gcc this is the only offset used). */
2255 /* The .got2 section. */
2258 /* PLT refcount or offset. */
2261 bfd_signed_vma refcount;
2265 /* .glink stub offset. */
2266 bfd_vma glink_offset;
2269 /* Of those relocs that might be copied as dynamic relocs, this macro
2270 selects those that must be copied when linking a shared library,
2271 even when the symbol is local. */
2273 #define MUST_BE_DYN_RELOC(RTYPE) \
2274 ((RTYPE) != R_PPC_REL24 \
2275 && (RTYPE) != R_PPC_REL14 \
2276 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2277 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2278 && (RTYPE) != R_PPC_REL32)
2280 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2281 copying dynamic variables from a shared lib into an app's dynbss
2282 section, and instead use a dynamic relocation to point into the
2284 #define ELIMINATE_COPY_RELOCS 1
2286 /* PPC ELF linker hash entry. */
2288 struct ppc_elf_link_hash_entry
2290 struct elf_link_hash_entry elf;
2292 /* If this symbol is used in the linker created sections, the processor
2293 specific backend uses this field to map the field into the offset
2294 from the beginning of the section. */
2295 elf_linker_section_pointers_t *linker_section_pointer;
2297 /* Track dynamic relocs copied for this symbol. */
2298 struct ppc_elf_dyn_relocs *dyn_relocs;
2300 /* Contexts in which symbol is used in the GOT (or TOC).
2301 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2302 corresponding relocs are encountered during check_relocs.
2303 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2304 indicate the corresponding GOT entry type is not needed. */
2305 #define TLS_GD 1 /* GD reloc. */
2306 #define TLS_LD 2 /* LD reloc. */
2307 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2308 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2309 #define TLS_TLS 16 /* Any TLS reloc. */
2310 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2313 /* Nonzero if we have seen a small data relocation referring to this
2315 unsigned char has_sda_refs;
2318 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2320 enum ppc_elf_plt_type {
2327 /* PPC ELF linker hash table. */
2329 struct ppc_elf_link_hash_table
2331 struct elf_link_hash_table elf;
2333 /* Short-cuts to get to dynamic linker sections. */
2343 elf_linker_section_t sdata[2];
2346 /* Shortcut to .__tls_get_addr. */
2347 struct elf_link_hash_entry *tls_get_addr;
2349 /* TLS local dynamic got entry handling. */
2351 bfd_signed_vma refcount;
2355 /* Offset of PltResolve function in glink. */
2356 bfd_vma glink_pltresolve;
2358 /* Size of reserved GOT entries. */
2359 unsigned int got_header_size;
2360 /* Non-zero if allocating the header left a gap. */
2361 unsigned int got_gap;
2363 /* The type of PLT we have chosen to use. */
2364 enum ppc_elf_plt_type plt_type;
2366 /* Whether we can use the new PLT layout. */
2367 unsigned int can_use_new_plt:1;
2369 /* Set if we should emit symbols for stubs. */
2370 unsigned int emit_stub_syms:1;
2372 /* Small local sym to section mapping cache. */
2373 struct sym_sec_cache sym_sec;
2375 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2378 /* The .got.plt section (VxWorks only)*/
2381 /* True if the target system is VxWorks. */
2384 /* The size of PLT entries. */
2386 /* The distance between adjacent PLT slots. */
2388 /* The size of the first PLT entry. */
2389 int plt_initial_entry_size;
2392 /* Get the PPC ELF linker hash table from a link_info structure. */
2394 #define ppc_elf_hash_table(p) \
2395 ((struct ppc_elf_link_hash_table *) (p)->hash)
2397 /* Create an entry in a PPC ELF linker hash table. */
2399 static struct bfd_hash_entry *
2400 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2401 struct bfd_hash_table *table,
2404 /* Allocate the structure if it has not already been allocated by a
2408 entry = bfd_hash_allocate (table,
2409 sizeof (struct ppc_elf_link_hash_entry));
2414 /* Call the allocation method of the superclass. */
2415 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2418 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2419 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2420 ppc_elf_hash_entry (entry)->tls_mask = 0;
2426 /* Create a PPC ELF linker hash table. */
2428 static struct bfd_link_hash_table *
2429 ppc_elf_link_hash_table_create (bfd *abfd)
2431 struct ppc_elf_link_hash_table *ret;
2433 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2437 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2438 ppc_elf_link_hash_newfunc,
2439 sizeof (struct ppc_elf_link_hash_entry)))
2445 ret->elf.init_plt_refcount.refcount = 0;
2446 ret->elf.init_plt_refcount.glist = NULL;
2447 ret->elf.init_plt_offset.offset = 0;
2448 ret->elf.init_plt_offset.glist = NULL;
2450 ret->sdata[0].name = ".sdata";
2451 ret->sdata[0].sym_name = "_SDA_BASE_";
2452 ret->sdata[0].bss_name = ".sbss";
2454 ret->sdata[1].name = ".sdata2";
2455 ret->sdata[1].sym_name = "_SDA2_BASE_";
2456 ret->sdata[1].bss_name = ".sbss2";
2458 ret->plt_entry_size = 12;
2459 ret->plt_slot_size = 8;
2460 ret->plt_initial_entry_size = 72;
2462 ret->is_vxworks = 0;
2464 return &ret->elf.root;
2467 /* Create .got and the related sections. */
2470 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2472 struct ppc_elf_link_hash_table *htab;
2476 if (!_bfd_elf_create_got_section (abfd, info))
2479 htab = ppc_elf_hash_table (info);
2480 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2484 if (htab->is_vxworks)
2486 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2492 /* The powerpc .got has a blrl instruction in it. Mark it
2494 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2495 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2496 if (!bfd_set_section_flags (abfd, s, flags))
2500 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2501 | SEC_LINKER_CREATED | SEC_READONLY);
2502 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2504 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2510 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2511 to output sections (just like _bfd_elf_create_dynamic_sections has
2512 to create .dynbss and .rela.bss). */
2515 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2517 struct ppc_elf_link_hash_table *htab;
2521 htab = ppc_elf_hash_table (info);
2523 if (htab->got == NULL
2524 && !ppc_elf_create_got (abfd, info))
2527 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2530 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2531 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2533 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2536 || !bfd_set_section_alignment (abfd, s, 4))
2539 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2540 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2541 SEC_ALLOC | SEC_LINKER_CREATED);
2548 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2549 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2552 || ! bfd_set_section_alignment (abfd, s, 2))
2556 if (htab->is_vxworks
2557 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2560 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2561 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2565 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2566 if (htab->plt_type == PLT_VXWORKS)
2567 /* The VxWorks PLT is a loaded section with contents. */
2568 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2569 return bfd_set_section_flags (abfd, s, flags);
2572 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2575 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2576 struct elf_link_hash_entry *dir,
2577 struct elf_link_hash_entry *ind)
2579 struct ppc_elf_link_hash_entry *edir, *eind;
2581 edir = (struct ppc_elf_link_hash_entry *) dir;
2582 eind = (struct ppc_elf_link_hash_entry *) ind;
2584 if (eind->dyn_relocs != NULL)
2586 if (edir->dyn_relocs != NULL)
2588 struct ppc_elf_dyn_relocs **pp;
2589 struct ppc_elf_dyn_relocs *p;
2591 /* Add reloc counts against the indirect sym to the direct sym
2592 list. Merge any entries against the same section. */
2593 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2595 struct ppc_elf_dyn_relocs *q;
2597 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2598 if (q->sec == p->sec)
2600 q->pc_count += p->pc_count;
2601 q->count += p->count;
2608 *pp = edir->dyn_relocs;
2611 edir->dyn_relocs = eind->dyn_relocs;
2612 eind->dyn_relocs = NULL;
2615 edir->tls_mask |= eind->tls_mask;
2616 edir->has_sda_refs |= eind->has_sda_refs;
2618 /* If called to transfer flags for a weakdef during processing
2619 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2620 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2621 if (!(ELIMINATE_COPY_RELOCS
2622 && eind->elf.root.type != bfd_link_hash_indirect
2623 && edir->elf.dynamic_adjusted))
2624 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2626 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2627 edir->elf.ref_regular |= eind->elf.ref_regular;
2628 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2629 edir->elf.needs_plt |= eind->elf.needs_plt;
2631 /* If we were called to copy over info for a weak sym, that's all. */
2632 if (eind->elf.root.type != bfd_link_hash_indirect)
2635 /* Copy over the GOT refcount entries that we may have already seen to
2636 the symbol which just became indirect. */
2637 edir->elf.got.refcount += eind->elf.got.refcount;
2638 eind->elf.got.refcount = 0;
2640 /* And plt entries. */
2641 if (eind->elf.plt.plist != NULL)
2643 if (edir->elf.plt.plist != NULL)
2645 struct plt_entry **entp;
2646 struct plt_entry *ent;
2648 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2650 struct plt_entry *dent;
2652 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2653 if (dent->sec == ent->sec && dent->addend == ent->addend)
2655 dent->plt.refcount += ent->plt.refcount;
2662 *entp = edir->elf.plt.plist;
2665 edir->elf.plt.plist = eind->elf.plt.plist;
2666 eind->elf.plt.plist = NULL;
2669 if (eind->elf.dynindx != -1)
2671 if (edir->elf.dynindx != -1)
2672 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2673 edir->elf.dynstr_index);
2674 edir->elf.dynindx = eind->elf.dynindx;
2675 edir->elf.dynstr_index = eind->elf.dynstr_index;
2676 eind->elf.dynindx = -1;
2677 eind->elf.dynstr_index = 0;
2681 /* Return 1 if target is one of ours. */
2684 is_ppc_elf_target (const struct bfd_target *targ)
2686 extern const bfd_target bfd_elf32_powerpc_vec;
2687 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
2688 extern const bfd_target bfd_elf32_powerpcle_vec;
2690 return (targ == &bfd_elf32_powerpc_vec
2691 || targ == &bfd_elf32_powerpc_vxworks_vec
2692 || targ == &bfd_elf32_powerpcle_vec);
2695 /* Hook called by the linker routine which adds symbols from an object
2696 file. We use it to put .comm items in .sbss, and not .bss. */
2699 ppc_elf_add_symbol_hook (bfd *abfd,
2700 struct bfd_link_info *info,
2701 Elf_Internal_Sym *sym,
2702 const char **namep ATTRIBUTE_UNUSED,
2703 flagword *flagsp ATTRIBUTE_UNUSED,
2707 if (sym->st_shndx == SHN_COMMON
2708 && !info->relocatable
2709 && sym->st_size <= elf_gp_size (abfd)
2710 && is_ppc_elf_target (info->hash->creator))
2712 /* Common symbols less than or equal to -G nn bytes are automatically
2714 struct ppc_elf_link_hash_table *htab;
2716 htab = ppc_elf_hash_table (info);
2717 if (htab->sbss == NULL)
2719 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2721 if (!htab->elf.dynobj)
2722 htab->elf.dynobj = abfd;
2724 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2727 if (htab->sbss == NULL)
2732 *valp = sym->st_size;
2739 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2740 elf_linker_section_t *lsect)
2742 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2744 if (lsect->sym == NULL)
2746 if (lsect->sym->root.type == bfd_link_hash_new)
2747 lsect->sym->non_elf = 0;
2748 lsect->sym->ref_regular = 1;
2752 /* Create a special linker section. */
2755 ppc_elf_create_linker_section (bfd *abfd,
2756 struct bfd_link_info *info,
2758 elf_linker_section_t *lsect)
2760 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2763 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2764 | SEC_LINKER_CREATED);
2766 /* Record the first bfd that needs the special sections. */
2767 if (!htab->elf.dynobj)
2768 htab->elf.dynobj = abfd;
2770 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2774 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2778 return create_sdata_sym (htab, lsect);
2781 /* Find a linker generated pointer with a given addend and type. */
2783 static elf_linker_section_pointers_t *
2784 elf_find_pointer_linker_section
2785 (elf_linker_section_pointers_t *linker_pointers,
2787 elf_linker_section_t *lsect)
2789 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2790 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2791 return linker_pointers;
2796 /* Allocate a pointer to live in a linker created section. */
2799 elf_create_pointer_linker_section (bfd *abfd,
2800 elf_linker_section_t *lsect,
2801 struct elf_link_hash_entry *h,
2802 const Elf_Internal_Rela *rel)
2804 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2805 elf_linker_section_pointers_t *linker_section_ptr;
2806 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2809 BFD_ASSERT (lsect != NULL);
2811 /* Is this a global symbol? */
2814 struct ppc_elf_link_hash_entry *eh;
2816 /* Has this symbol already been allocated? If so, our work is done. */
2817 eh = (struct ppc_elf_link_hash_entry *) h;
2818 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2823 ptr_linker_section_ptr = &eh->linker_section_pointer;
2827 /* Allocation of a pointer to a local symbol. */
2828 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2830 /* Allocate a table to hold the local symbols if first time. */
2833 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2836 amt *= sizeof (elf_linker_section_pointers_t *);
2837 ptr = bfd_zalloc (abfd, amt);
2842 elf_local_ptr_offsets (abfd) = ptr;
2845 /* Has this symbol already been allocated? If so, our work is done. */
2846 if (elf_find_pointer_linker_section (ptr[r_symndx],
2851 ptr_linker_section_ptr = &ptr[r_symndx];
2854 /* Allocate space for a pointer in the linker section, and allocate
2855 a new pointer record from internal memory. */
2856 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2857 amt = sizeof (elf_linker_section_pointers_t);
2858 linker_section_ptr = bfd_alloc (abfd, amt);
2860 if (!linker_section_ptr)
2863 linker_section_ptr->next = *ptr_linker_section_ptr;
2864 linker_section_ptr->addend = rel->r_addend;
2865 linker_section_ptr->lsect = lsect;
2866 *ptr_linker_section_ptr = linker_section_ptr;
2868 linker_section_ptr->offset = lsect->section->size;
2869 lsect->section->size += 4;
2873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2874 lsect->name, (long) linker_section_ptr->offset,
2875 (long) lsect->section->size);
2882 update_local_sym_info (bfd *abfd,
2883 Elf_Internal_Shdr *symtab_hdr,
2884 unsigned long r_symndx,
2887 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2888 char *local_got_tls_masks;
2890 if (local_got_refcounts == NULL)
2892 bfd_size_type size = symtab_hdr->sh_info;
2894 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2895 local_got_refcounts = bfd_zalloc (abfd, size);
2896 if (local_got_refcounts == NULL)
2898 elf_local_got_refcounts (abfd) = local_got_refcounts;
2901 local_got_refcounts[r_symndx] += 1;
2902 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2903 local_got_tls_masks[r_symndx] |= tls_type;
2908 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2909 asection *sec, bfd_vma addend)
2911 struct plt_entry *ent;
2915 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2916 if (ent->sec == sec && ent->addend == addend)
2920 bfd_size_type amt = sizeof (*ent);
2921 ent = bfd_alloc (abfd, amt);
2924 ent->next = h->plt.plist;
2926 ent->addend = addend;
2927 ent->plt.refcount = 0;
2930 ent->plt.refcount += 1;
2934 static struct plt_entry *
2935 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2937 struct plt_entry *ent;
2941 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2942 if (ent->sec == sec && ent->addend == addend)
2948 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2950 (*_bfd_error_handler)
2951 (_("%B: relocation %s cannot be used when making a shared object"),
2953 ppc_elf_howto_table[r_type]->name);
2954 bfd_set_error (bfd_error_bad_value);
2957 /* Look through the relocs for a section during the first phase, and
2958 allocate space in the global offset table or procedure linkage
2962 ppc_elf_check_relocs (bfd *abfd,
2963 struct bfd_link_info *info,
2965 const Elf_Internal_Rela *relocs)
2967 struct ppc_elf_link_hash_table *htab;
2968 Elf_Internal_Shdr *symtab_hdr;
2969 struct elf_link_hash_entry **sym_hashes;
2970 const Elf_Internal_Rela *rel;
2971 const Elf_Internal_Rela *rel_end;
2972 asection *got2, *sreloc;
2974 if (info->relocatable)
2977 /* Don't do anything special with non-loaded, non-alloced sections.
2978 In particular, any relocs in such sections should not affect GOT
2979 and PLT reference counting (ie. we don't allow them to create GOT
2980 or PLT entries), there's no possibility or desire to optimize TLS
2981 relocs, and there's not much point in propagating relocs to shared
2982 libs that the dynamic linker won't relocate. */
2983 if ((sec->flags & SEC_ALLOC) == 0)
2987 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2991 /* Initialize howto table if not already done. */
2992 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2993 ppc_elf_howto_init ();
2995 htab = ppc_elf_hash_table (info);
2996 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2997 sym_hashes = elf_sym_hashes (abfd);
2998 got2 = bfd_get_section_by_name (abfd, ".got2");
3001 rel_end = relocs + sec->reloc_count;
3002 for (rel = relocs; rel < rel_end; rel++)
3004 unsigned long r_symndx;
3005 enum elf_ppc_reloc_type r_type;
3006 struct elf_link_hash_entry *h;
3009 r_symndx = ELF32_R_SYM (rel->r_info);
3010 if (r_symndx < symtab_hdr->sh_info)
3014 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3015 while (h->root.type == bfd_link_hash_indirect
3016 || h->root.type == bfd_link_hash_warning)
3017 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3020 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3021 This shows up in particular in an R_PPC_ADDR32 in the eabi
3024 && htab->got == NULL
3025 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3027 if (htab->elf.dynobj == NULL)
3028 htab->elf.dynobj = abfd;
3029 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3031 BFD_ASSERT (h == htab->elf.hgot);
3034 r_type = ELF32_R_TYPE (rel->r_info);
3037 case R_PPC_GOT_TLSLD16:
3038 case R_PPC_GOT_TLSLD16_LO:
3039 case R_PPC_GOT_TLSLD16_HI:
3040 case R_PPC_GOT_TLSLD16_HA:
3041 htab->tlsld_got.refcount += 1;
3042 tls_type = TLS_TLS | TLS_LD;
3045 case R_PPC_GOT_TLSGD16:
3046 case R_PPC_GOT_TLSGD16_LO:
3047 case R_PPC_GOT_TLSGD16_HI:
3048 case R_PPC_GOT_TLSGD16_HA:
3049 tls_type = TLS_TLS | TLS_GD;
3052 case R_PPC_GOT_TPREL16:
3053 case R_PPC_GOT_TPREL16_LO:
3054 case R_PPC_GOT_TPREL16_HI:
3055 case R_PPC_GOT_TPREL16_HA:
3057 info->flags |= DF_STATIC_TLS;
3058 tls_type = TLS_TLS | TLS_TPREL;
3061 case R_PPC_GOT_DTPREL16:
3062 case R_PPC_GOT_DTPREL16_LO:
3063 case R_PPC_GOT_DTPREL16_HI:
3064 case R_PPC_GOT_DTPREL16_HA:
3065 tls_type = TLS_TLS | TLS_DTPREL;
3067 sec->has_tls_reloc = 1;
3070 /* GOT16 relocations */
3072 case R_PPC_GOT16_LO:
3073 case R_PPC_GOT16_HI:
3074 case R_PPC_GOT16_HA:
3075 /* This symbol requires a global offset table entry. */
3076 if (htab->got == NULL)
3078 if (htab->elf.dynobj == NULL)
3079 htab->elf.dynobj = abfd;
3080 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3085 h->got.refcount += 1;
3086 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3089 /* This is a global offset table entry for a local symbol. */
3090 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3094 /* Indirect .sdata relocation. */
3095 case R_PPC_EMB_SDAI16:
3098 bad_shared_reloc (abfd, r_type);
3101 if (htab->sdata[0].section == NULL
3102 && !ppc_elf_create_linker_section (abfd, info, 0,
3105 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3110 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3111 h->non_got_ref = TRUE;
3115 /* Indirect .sdata2 relocation. */
3116 case R_PPC_EMB_SDA2I16:
3119 bad_shared_reloc (abfd, r_type);
3122 if (htab->sdata[1].section == NULL
3123 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3126 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3131 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3132 h->non_got_ref = TRUE;
3136 case R_PPC_SDAREL16:
3139 bad_shared_reloc (abfd, r_type);
3142 if (htab->sdata[0].sym == NULL
3143 && !create_sdata_sym (htab, &htab->sdata[0]))
3147 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3148 h->non_got_ref = TRUE;
3152 case R_PPC_EMB_SDA2REL:
3155 bad_shared_reloc (abfd, r_type);
3158 if (htab->sdata[1].sym == NULL
3159 && !create_sdata_sym (htab, &htab->sdata[1]))
3163 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3164 h->non_got_ref = TRUE;
3168 case R_PPC_EMB_SDA21:
3169 case R_PPC_EMB_RELSDA:
3172 bad_shared_reloc (abfd, r_type);
3175 if (htab->sdata[0].sym == NULL
3176 && !create_sdata_sym (htab, &htab->sdata[0]))
3178 if (htab->sdata[1].sym == NULL
3179 && !create_sdata_sym (htab, &htab->sdata[1]))
3183 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3184 h->non_got_ref = TRUE;
3188 case R_PPC_EMB_NADDR32:
3189 case R_PPC_EMB_NADDR16:
3190 case R_PPC_EMB_NADDR16_LO:
3191 case R_PPC_EMB_NADDR16_HI:
3192 case R_PPC_EMB_NADDR16_HA:
3195 bad_shared_reloc (abfd, r_type);
3199 h->non_got_ref = TRUE;
3203 case R_PPC_PLTREL24:
3204 case R_PPC_PLTREL32:
3205 case R_PPC_PLT16_LO:
3206 case R_PPC_PLT16_HI:
3207 case R_PPC_PLT16_HA:
3209 fprintf (stderr, "Reloc requires a PLT entry\n");
3211 /* This symbol requires a procedure linkage table entry. We
3212 actually build the entry in finish_dynamic_symbol,
3213 because this might be a case of linking PIC code without
3214 linking in any dynamic objects, in which case we don't
3215 need to generate a procedure linkage table after all. */
3219 /* It does not make sense to have a procedure linkage
3220 table entry for a local symbol. */
3221 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3225 (long) rel->r_offset,
3226 ppc_elf_howto_table[r_type]->name);
3227 bfd_set_error (bfd_error_bad_value);
3232 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3235 if (!update_plt_info (abfd, h, got2, addend))
3240 /* The following relocations don't need to propagate the
3241 relocation if linking a shared object since they are
3242 section relative. */
3244 case R_PPC_SECTOFF_LO:
3245 case R_PPC_SECTOFF_HI:
3246 case R_PPC_SECTOFF_HA:
3247 case R_PPC_DTPREL16:
3248 case R_PPC_DTPREL16_LO:
3249 case R_PPC_DTPREL16_HI:
3250 case R_PPC_DTPREL16_HA:
3255 case R_PPC_REL16_LO:
3256 case R_PPC_REL16_HI:
3257 case R_PPC_REL16_HA:
3258 htab->can_use_new_plt = 1;
3261 /* These are just markers. */
3263 case R_PPC_EMB_MRKREF:
3268 /* These should only appear in dynamic objects. */
3270 case R_PPC_GLOB_DAT:
3271 case R_PPC_JMP_SLOT:
3272 case R_PPC_RELATIVE:
3275 /* These aren't handled yet. We'll report an error later. */
3277 case R_PPC_EMB_RELSEC16:
3278 case R_PPC_EMB_RELST_LO:
3279 case R_PPC_EMB_RELST_HI:
3280 case R_PPC_EMB_RELST_HA:
3281 case R_PPC_EMB_BIT_FLD:
3284 /* This refers only to functions defined in the shared library. */
3285 case R_PPC_LOCAL24PC:
3286 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3287 htab->plt_type = PLT_OLD;
3290 /* This relocation describes the C++ object vtable hierarchy.
3291 Reconstruct it for later use during GC. */
3292 case R_PPC_GNU_VTINHERIT:
3293 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3297 /* This relocation describes which C++ vtable entries are actually
3298 used. Record for later use during GC. */
3299 case R_PPC_GNU_VTENTRY:
3300 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3304 /* We shouldn't really be seeing these. */
3307 info->flags |= DF_STATIC_TLS;
3311 case R_PPC_DTPMOD32:
3312 case R_PPC_DTPREL32:
3316 case R_PPC_TPREL16_LO:
3317 case R_PPC_TPREL16_HI:
3318 case R_PPC_TPREL16_HA:
3320 info->flags |= DF_STATIC_TLS;
3326 && (sec->flags & SEC_CODE) != 0
3327 && (info->shared || info->pie)
3328 && htab->plt_type == PLT_UNSET)
3330 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3331 the start of a function, which assembles to a REL32
3332 reference to .got2. If we detect one of these, then
3333 force the old PLT layout because the linker cannot
3334 reliably deduce the GOT pointer value needed for
3338 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3341 htab->plt_type = PLT_OLD;
3343 if (h == NULL || h == htab->elf.hgot)
3349 case R_PPC_REL14_BRTAKEN:
3350 case R_PPC_REL14_BRNTAKEN:
3353 if (h == htab->elf.hgot)
3355 if (htab->plt_type == PLT_UNSET)
3356 htab->plt_type = PLT_OLD;
3364 case R_PPC_ADDR16_LO:
3365 case R_PPC_ADDR16_HI:
3366 case R_PPC_ADDR16_HA:
3368 case R_PPC_ADDR14_BRTAKEN:
3369 case R_PPC_ADDR14_BRNTAKEN:
3373 if (h != NULL && !info->shared)
3375 /* We may need a plt entry if the symbol turns out to be
3376 a function defined in a dynamic object. */
3377 if (!update_plt_info (abfd, h, NULL, 0))
3380 /* We may need a copy reloc too. */
3385 /* If we are creating a shared library, and this is a reloc
3386 against a global symbol, or a non PC relative reloc
3387 against a local symbol, then we need to copy the reloc
3388 into the shared library. However, if we are linking with
3389 -Bsymbolic, we do not need to copy a reloc against a
3390 global symbol which is defined in an object we are
3391 including in the link (i.e., DEF_REGULAR is set). At
3392 this point we have not seen all the input files, so it is
3393 possible that DEF_REGULAR is not set now but will be set
3394 later (it is never cleared). In case of a weak definition,
3395 DEF_REGULAR may be cleared later by a strong definition in
3396 a shared library. We account for that possibility below by
3397 storing information in the dyn_relocs field of the hash
3398 table entry. A similar situation occurs when creating
3399 shared libraries and symbol visibility changes render the
3402 If on the other hand, we are creating an executable, we
3403 may need to keep relocations for symbols satisfied by a
3404 dynamic library if we manage to avoid copy relocs for the
3407 && (MUST_BE_DYN_RELOC (r_type)
3409 && (! info->symbolic
3410 || h->root.type == bfd_link_hash_defweak
3411 || !h->def_regular))))
3412 || (ELIMINATE_COPY_RELOCS
3415 && (h->root.type == bfd_link_hash_defweak
3416 || !h->def_regular)))
3418 struct ppc_elf_dyn_relocs *p;
3419 struct ppc_elf_dyn_relocs **head;
3423 "ppc_elf_check_relocs needs to "
3424 "create relocation for %s\n",
3425 (h && h->root.root.string
3426 ? h->root.root.string : "<unknown>"));
3432 name = (bfd_elf_string_from_elf_section
3434 elf_elfheader (abfd)->e_shstrndx,
3435 elf_section_data (sec)->rel_hdr.sh_name));
3439 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3440 && strcmp (bfd_get_section_name (abfd, sec),
3443 if (htab->elf.dynobj == NULL)
3444 htab->elf.dynobj = abfd;
3445 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3450 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3451 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3452 | SEC_ALLOC | SEC_LOAD);
3453 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3457 || ! bfd_set_section_alignment (htab->elf.dynobj,
3461 elf_section_data (sec)->sreloc = sreloc;
3464 /* If this is a global symbol, we count the number of
3465 relocations we need for this symbol. */
3468 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3472 /* Track dynamic relocs needed for local syms too.
3473 We really need local syms available to do this
3479 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3484 vpp = &elf_section_data (s)->local_dynrel;
3485 head = (struct ppc_elf_dyn_relocs **) vpp;
3489 if (p == NULL || p->sec != sec)
3491 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3502 if (!MUST_BE_DYN_RELOC (r_type))
3513 /* Merge backend specific data from an object file to the output
3514 object file when linking. */
3517 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3523 if (!is_ppc_elf_target (ibfd->xvec)
3524 || !is_ppc_elf_target (obfd->xvec))
3527 /* Check if we have the same endianess. */
3528 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3531 new_flags = elf_elfheader (ibfd)->e_flags;
3532 old_flags = elf_elfheader (obfd)->e_flags;
3533 if (!elf_flags_init (obfd))
3535 /* First call, no flags set. */
3536 elf_flags_init (obfd) = TRUE;
3537 elf_elfheader (obfd)->e_flags = new_flags;
3540 /* Compatible flags are ok. */
3541 else if (new_flags == old_flags)
3544 /* Incompatible flags. */
3547 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3548 to be linked with either. */
3550 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3551 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3554 (*_bfd_error_handler)
3555 (_("%B: compiled with -mrelocatable and linked with "
3556 "modules compiled normally"), ibfd);
3558 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3559 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3562 (*_bfd_error_handler)
3563 (_("%B: compiled normally and linked with "
3564 "modules compiled with -mrelocatable"), ibfd);
3567 /* The output is -mrelocatable-lib iff both the input files are. */
3568 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3569 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3571 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3572 but each input file is either -mrelocatable or -mrelocatable-lib. */
3573 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3574 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3575 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3576 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3578 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3579 any module uses it. */
3580 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3582 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3583 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3585 /* Warn about any other mismatches. */
3586 if (new_flags != old_flags)
3589 (*_bfd_error_handler)
3590 (_("%B: uses different e_flags (0x%lx) fields "
3591 "than previous modules (0x%lx)"),
3592 ibfd, (long) new_flags, (long) old_flags);
3597 bfd_set_error (bfd_error_bad_value);
3605 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3606 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3608 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3609 struct bfd_link_info *info,
3613 struct ppc_elf_link_hash_table *htab;
3616 htab = ppc_elf_hash_table (info);
3618 if (htab->plt_type == PLT_UNSET)
3619 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3620 ? PLT_OLD : PLT_NEW);
3622 htab->emit_stub_syms = emit_stub_syms;
3624 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3626 if (htab->plt_type == PLT_NEW)
3628 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3629 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3631 /* The new PLT is a loaded section. */
3632 if (htab->plt != NULL
3633 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3636 /* The new GOT is not executable. */
3637 if (htab->got != NULL
3638 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3643 /* Stop an unused .glink section from affecting .text alignment. */
3644 if (htab->glink != NULL
3645 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3648 return htab->plt_type == PLT_NEW;
3651 /* Return the section that should be marked against GC for a given
3655 ppc_elf_gc_mark_hook (asection *sec,
3656 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3657 Elf_Internal_Rela *rel,
3658 struct elf_link_hash_entry *h,
3659 Elf_Internal_Sym *sym)
3663 switch (ELF32_R_TYPE (rel->r_info))
3665 case R_PPC_GNU_VTINHERIT:
3666 case R_PPC_GNU_VTENTRY:
3670 switch (h->root.type)
3672 case bfd_link_hash_defined:
3673 case bfd_link_hash_defweak:
3674 return h->root.u.def.section;
3676 case bfd_link_hash_common:
3677 return h->root.u.c.p->section;
3685 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3690 /* Update the got, plt and dynamic reloc reference counts for the
3691 section being removed. */
3694 ppc_elf_gc_sweep_hook (bfd *abfd,
3695 struct bfd_link_info *info,
3697 const Elf_Internal_Rela *relocs)
3699 struct ppc_elf_link_hash_table *htab;
3700 Elf_Internal_Shdr *symtab_hdr;
3701 struct elf_link_hash_entry **sym_hashes;
3702 bfd_signed_vma *local_got_refcounts;
3703 const Elf_Internal_Rela *rel, *relend;
3706 if ((sec->flags & SEC_ALLOC) == 0)
3709 elf_section_data (sec)->local_dynrel = NULL;
3711 htab = ppc_elf_hash_table (info);
3712 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3713 sym_hashes = elf_sym_hashes (abfd);
3714 local_got_refcounts = elf_local_got_refcounts (abfd);
3715 got2 = bfd_get_section_by_name (abfd, ".got2");
3717 relend = relocs + sec->reloc_count;
3718 for (rel = relocs; rel < relend; rel++)
3720 unsigned long r_symndx;
3721 enum elf_ppc_reloc_type r_type;
3722 struct elf_link_hash_entry *h = NULL;
3724 r_symndx = ELF32_R_SYM (rel->r_info);
3725 if (r_symndx >= symtab_hdr->sh_info)
3727 struct ppc_elf_dyn_relocs **pp, *p;
3728 struct ppc_elf_link_hash_entry *eh;
3730 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3731 while (h->root.type == bfd_link_hash_indirect
3732 || h->root.type == bfd_link_hash_warning)
3733 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3734 eh = (struct ppc_elf_link_hash_entry *) h;
3736 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3739 /* Everything must go for SEC. */
3745 r_type = ELF32_R_TYPE (rel->r_info);
3748 case R_PPC_GOT_TLSLD16:
3749 case R_PPC_GOT_TLSLD16_LO:
3750 case R_PPC_GOT_TLSLD16_HI:
3751 case R_PPC_GOT_TLSLD16_HA:
3752 htab->tlsld_got.refcount -= 1;
3755 case R_PPC_GOT_TLSGD16:
3756 case R_PPC_GOT_TLSGD16_LO:
3757 case R_PPC_GOT_TLSGD16_HI:
3758 case R_PPC_GOT_TLSGD16_HA:
3759 case R_PPC_GOT_TPREL16:
3760 case R_PPC_GOT_TPREL16_LO:
3761 case R_PPC_GOT_TPREL16_HI:
3762 case R_PPC_GOT_TPREL16_HA:
3763 case R_PPC_GOT_DTPREL16:
3764 case R_PPC_GOT_DTPREL16_LO:
3765 case R_PPC_GOT_DTPREL16_HI:
3766 case R_PPC_GOT_DTPREL16_HA:
3768 case R_PPC_GOT16_LO:
3769 case R_PPC_GOT16_HI:
3770 case R_PPC_GOT16_HA:
3773 if (h->got.refcount > 0)
3776 else if (local_got_refcounts != NULL)
3778 if (local_got_refcounts[r_symndx] > 0)
3779 local_got_refcounts[r_symndx]--;
3785 case R_PPC_REL14_BRTAKEN:
3786 case R_PPC_REL14_BRNTAKEN:
3788 if (h == NULL || h == htab->elf.hgot)
3795 case R_PPC_ADDR16_LO:
3796 case R_PPC_ADDR16_HI:
3797 case R_PPC_ADDR16_HA:
3799 case R_PPC_ADDR14_BRTAKEN:
3800 case R_PPC_ADDR14_BRNTAKEN:
3807 case R_PPC_PLTREL24:
3808 case R_PPC_PLTREL32:
3809 case R_PPC_PLT16_LO:
3810 case R_PPC_PLT16_HI:
3811 case R_PPC_PLT16_HA:
3814 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3815 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3816 if (ent->plt.refcount > 0)
3817 ent->plt.refcount -= 1;
3828 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3831 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3833 struct ppc_elf_link_hash_table *htab;
3835 htab = ppc_elf_hash_table (info);
3836 if (htab->plt_type == PLT_NEW
3837 && htab->plt != NULL
3838 && htab->plt->output_section != NULL)
3840 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3841 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3844 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3845 FALSE, FALSE, TRUE);
3846 return _bfd_elf_tls_setup (obfd, info);
3849 /* Run through all the TLS relocs looking for optimization
3853 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3854 struct bfd_link_info *info)
3858 struct ppc_elf_link_hash_table *htab;
3860 if (info->relocatable || info->shared)
3863 htab = ppc_elf_hash_table (info);
3864 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3866 Elf_Internal_Sym *locsyms = NULL;
3867 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3869 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3870 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3872 Elf_Internal_Rela *relstart, *rel, *relend;
3873 int expecting_tls_get_addr;
3875 /* Read the relocations. */
3876 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3878 if (relstart == NULL)
3881 expecting_tls_get_addr = 0;
3882 relend = relstart + sec->reloc_count;
3883 for (rel = relstart; rel < relend; rel++)
3885 enum elf_ppc_reloc_type r_type;
3886 unsigned long r_symndx;
3887 struct elf_link_hash_entry *h = NULL;
3889 char tls_set, tls_clear;
3890 bfd_boolean is_local;
3892 r_symndx = ELF32_R_SYM (rel->r_info);
3893 if (r_symndx >= symtab_hdr->sh_info)
3895 struct elf_link_hash_entry **sym_hashes;
3897 sym_hashes = elf_sym_hashes (ibfd);
3898 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3899 while (h->root.type == bfd_link_hash_indirect
3900 || h->root.type == bfd_link_hash_warning)
3901 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3909 r_type = ELF32_R_TYPE (rel->r_info);
3912 case R_PPC_GOT_TLSLD16:
3913 case R_PPC_GOT_TLSLD16_LO:
3914 case R_PPC_GOT_TLSLD16_HI:
3915 case R_PPC_GOT_TLSLD16_HA:
3916 /* These relocs should never be against a symbol
3917 defined in a shared lib. Leave them alone if
3918 that turns out to be the case. */
3919 expecting_tls_get_addr = 0;
3920 htab->tlsld_got.refcount -= 1;
3927 expecting_tls_get_addr = 1;
3930 case R_PPC_GOT_TLSGD16:
3931 case R_PPC_GOT_TLSGD16_LO:
3932 case R_PPC_GOT_TLSGD16_HI:
3933 case R_PPC_GOT_TLSGD16_HA:
3939 tls_set = TLS_TLS | TLS_TPRELGD;
3941 expecting_tls_get_addr = 1;
3944 case R_PPC_GOT_TPREL16:
3945 case R_PPC_GOT_TPREL16_LO:
3946 case R_PPC_GOT_TPREL16_HI:
3947 case R_PPC_GOT_TPREL16_HA:
3948 expecting_tls_get_addr = 0;
3953 tls_clear = TLS_TPREL;
3960 case R_PPC_REL14_BRTAKEN:
3961 case R_PPC_REL14_BRNTAKEN:
3963 if (expecting_tls_get_addr
3965 && h == htab->tls_get_addr)
3967 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3968 if (ent != NULL && ent->plt.refcount > 0)
3969 ent->plt.refcount -= 1;
3971 expecting_tls_get_addr = 0;
3975 expecting_tls_get_addr = 0;
3983 /* We managed to get rid of a got entry. */
3984 if (h->got.refcount > 0)
3985 h->got.refcount -= 1;
3987 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3991 Elf_Internal_Sym *sym;
3992 bfd_signed_vma *lgot_refs;
3995 if (locsyms == NULL)
3997 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3998 if (locsyms == NULL)
3999 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4000 symtab_hdr->sh_info,
4001 0, NULL, NULL, NULL);
4002 if (locsyms == NULL)
4004 if (elf_section_data (sec)->relocs != relstart)
4009 sym = locsyms + r_symndx;
4010 lgot_refs = elf_local_got_refcounts (ibfd);
4011 if (lgot_refs == NULL)
4015 /* We managed to get rid of a got entry. */
4016 if (lgot_refs[r_symndx] > 0)
4017 lgot_refs[r_symndx] -= 1;
4019 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4020 tls_mask = &lgot_masks[r_symndx];
4023 *tls_mask |= tls_set;
4024 *tls_mask &= ~tls_clear;
4027 if (elf_section_data (sec)->relocs != relstart)
4032 && (symtab_hdr->contents != (unsigned char *) locsyms))
4034 if (!info->keep_memory)
4037 symtab_hdr->contents = (unsigned char *) locsyms;
4043 /* Adjust a symbol defined by a dynamic object and referenced by a
4044 regular object. The current definition is in some section of the
4045 dynamic object, but we're not including those sections. We have to
4046 change the definition to something the rest of the link can
4050 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4051 struct elf_link_hash_entry *h)
4053 struct ppc_elf_link_hash_table *htab;
4055 unsigned int power_of_two;
4058 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4059 h->root.root.string);
4062 /* Make sure we know what is going on here. */
4063 htab = ppc_elf_hash_table (info);
4064 BFD_ASSERT (htab->elf.dynobj != NULL
4066 || h->u.weakdef != NULL
4069 && !h->def_regular)));
4071 /* Deal with function syms. */
4072 if (h->type == STT_FUNC
4075 /* Clear procedure linkage table information for any symbol that
4076 won't need a .plt entry. */
4077 struct plt_entry *ent;
4078 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4079 if (ent->plt.refcount > 0)
4082 || SYMBOL_CALLS_LOCAL (info, h)
4083 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4084 && h->root.type == bfd_link_hash_undefweak))
4086 /* A PLT entry is not required/allowed when:
4088 1. We are not using ld.so; because then the PLT entry
4089 can't be set up, so we can't use one. In this case,
4090 ppc_elf_adjust_dynamic_symbol won't even be called.
4092 2. GC has rendered the entry unused.
4094 3. We know for certain that a call to this symbol
4095 will go to this object, or will remain undefined. */
4096 h->plt.plist = NULL;
4102 h->plt.plist = NULL;
4104 /* If this is a weak symbol, and there is a real definition, the
4105 processor independent code will have arranged for us to see the
4106 real definition first, and we can just use the same value. */
4107 if (h->u.weakdef != NULL)
4109 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4110 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4111 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4112 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4113 if (ELIMINATE_COPY_RELOCS)
4114 h->non_got_ref = h->u.weakdef->non_got_ref;
4118 /* This is a reference to a symbol defined by a dynamic object which
4119 is not a function. */
4121 /* If we are creating a shared library, we must presume that the
4122 only references to the symbol are via the global offset table.
4123 For such cases we need not do anything here; the relocations will
4124 be handled correctly by relocate_section. */
4128 /* If there are no references to this symbol that do not use the
4129 GOT, we don't need to generate a copy reloc. */
4130 if (!h->non_got_ref)
4133 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4134 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4135 do this if there are any small data relocations. */
4136 if (ELIMINATE_COPY_RELOCS
4137 && !ppc_elf_hash_entry (h)->has_sda_refs)
4139 struct ppc_elf_dyn_relocs *p;
4140 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4142 s = p->sec->output_section;
4143 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4156 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4157 h->root.root.string);
4161 /* We must allocate the symbol in our .dynbss section, which will
4162 become part of the .bss section of the executable. There will be
4163 an entry for this symbol in the .dynsym section. The dynamic
4164 object will contain position independent code, so all references
4165 from the dynamic object to this symbol will go through the global
4166 offset table. The dynamic linker will use the .dynsym entry to
4167 determine the address it must put in the global offset table, so
4168 both the dynamic object and the regular object will refer to the
4169 same memory location for the variable.
4171 Of course, if the symbol is referenced using SDAREL relocs, we
4172 must instead allocate it in .sbss. */
4174 if (ppc_elf_hash_entry (h)->has_sda_refs)
4178 BFD_ASSERT (s != NULL);
4180 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4181 copy the initial value out of the dynamic object and into the
4182 runtime process image. We need to remember the offset into the
4183 .rela.bss section we are going to use. */
4184 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4188 if (ppc_elf_hash_entry (h)->has_sda_refs)
4189 srel = htab->relsbss;
4191 srel = htab->relbss;
4192 BFD_ASSERT (srel != NULL);
4193 srel->size += sizeof (Elf32_External_Rela);
4197 /* We need to figure out the alignment required for this symbol. I
4198 have no idea how ELF linkers handle this. */
4199 power_of_two = bfd_log2 (h->size);
4200 if (power_of_two > 4)
4203 /* Apply the required alignment. */
4204 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4205 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4207 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4211 /* Define the symbol as being at this point in the section. */
4212 h->root.u.def.section = s;
4213 h->root.u.def.value = s->size;
4215 /* Increment the section size to make room for the symbol. */
4221 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4222 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4223 specifying the addend on the plt relocation. For -fpic code, the sym
4224 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4225 xxxxxxxx.got2.plt_pic32.<callee>. */
4228 add_stub_sym (struct plt_entry *ent,
4229 struct elf_link_hash_entry *h,
4230 struct bfd_link_info *info)
4232 struct elf_link_hash_entry *sh;
4233 size_t len1, len2, len3;
4236 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4238 if (info->shared || info->pie)
4239 stub = ".plt_pic32.";
4241 stub = ".plt_call32.";
4243 len1 = strlen (h->root.root.string);
4244 len2 = strlen (stub);
4247 len3 = strlen (ent->sec->name);
4248 name = bfd_malloc (len1 + len2 + len3 + 9);
4251 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4253 memcpy (name + 8, ent->sec->name, len3);
4254 memcpy (name + 8 + len3, stub, len2);
4255 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4256 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4259 if (sh->root.type == bfd_link_hash_new)
4261 sh->root.type = bfd_link_hash_defined;
4262 sh->root.u.def.section = htab->glink;
4263 sh->root.u.def.value = ent->glink_offset;
4264 sh->ref_regular = 1;
4265 sh->def_regular = 1;
4266 sh->ref_regular_nonweak = 1;
4267 sh->forced_local = 1;
4273 /* Allocate NEED contiguous space in .got, and return the offset.
4274 Handles allocation of the got header when crossing 32k. */
4277 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4280 unsigned int max_before_header;
4282 if (htab->plt_type == PLT_VXWORKS)
4284 where = htab->got->size;
4285 htab->got->size += need;
4289 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4290 if (need <= htab->got_gap)
4292 where = max_before_header - htab->got_gap;
4293 htab->got_gap -= need;
4297 if (htab->got->size + need > max_before_header
4298 && htab->got->size <= max_before_header)
4300 htab->got_gap = max_before_header - htab->got->size;
4301 htab->got->size = max_before_header + htab->got_header_size;
4303 where = htab->got->size;
4304 htab->got->size += need;
4310 /* Allocate space in associated reloc sections for dynamic relocs. */
4313 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4315 struct bfd_link_info *info = inf;
4316 struct ppc_elf_link_hash_entry *eh;
4317 struct ppc_elf_link_hash_table *htab;
4318 struct ppc_elf_dyn_relocs *p;
4320 if (h->root.type == bfd_link_hash_indirect)
4323 if (h->root.type == bfd_link_hash_warning)
4324 /* When warning symbols are created, they **replace** the "real"
4325 entry in the hash table, thus we never get to see the real
4326 symbol in a hash traversal. So look at it now. */
4327 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4329 htab = ppc_elf_hash_table (info);
4330 if (htab->elf.dynamic_sections_created)
4332 struct plt_entry *ent;
4333 bfd_boolean doneone = FALSE;
4334 bfd_vma plt_offset = 0, glink_offset = 0;
4336 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4337 if (ent->plt.refcount > 0)
4339 /* Make sure this symbol is output as a dynamic symbol. */
4340 if (h->dynindx == -1
4341 && !h->forced_local)
4343 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4348 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4350 asection *s = htab->plt;
4352 if (htab->plt_type == PLT_NEW)
4356 plt_offset = s->size;
4359 ent->plt.offset = plt_offset;
4362 if (!doneone || info->shared || info->pie)
4364 glink_offset = s->size;
4365 s->size += GLINK_ENTRY_SIZE;
4371 h->root.u.def.section = s;
4372 h->root.u.def.value = glink_offset;
4374 ent->glink_offset = glink_offset;
4376 if (htab->emit_stub_syms
4377 && !add_stub_sym (ent, h, info))
4384 /* If this is the first .plt entry, make room
4385 for the special first entry. */
4387 s->size += htab->plt_initial_entry_size;
4389 /* The PowerPC PLT is actually composed of two
4390 parts, the first part is 2 words (for a load
4391 and a jump), and then there is a remaining
4392 word available at the end. */
4393 plt_offset = (htab->plt_initial_entry_size
4394 + (htab->plt_slot_size
4396 - htab->plt_initial_entry_size)
4397 / htab->plt_entry_size)));
4399 /* If this symbol is not defined in a regular
4400 file, and we are not generating a shared
4401 library, then set the symbol to this location
4402 in the .plt. This is required to make
4403 function pointers compare as equal between
4404 the normal executable and the shared library. */
4408 h->root.u.def.section = s;
4409 h->root.u.def.value = plt_offset;
4412 /* Make room for this entry. */
4413 s->size += htab->plt_entry_size;
4414 /* After the 8192nd entry, room for two entries
4416 if (htab->plt_type == PLT_OLD
4417 && (s->size - htab->plt_initial_entry_size)
4418 / htab->plt_entry_size
4419 > PLT_NUM_SINGLE_ENTRIES)
4420 s->size += htab->plt_entry_size;
4422 ent->plt.offset = plt_offset;
4425 /* We also need to make an entry in the .rela.plt section. */
4428 htab->relplt->size += sizeof (Elf32_External_Rela);
4430 if (htab->plt_type == PLT_VXWORKS)
4432 /* Allocate space for the unloaded relocations. */
4436 == (bfd_vma) htab->plt_initial_entry_size)
4438 htab->srelplt2->size
4439 += sizeof (Elf32_External_Rela)
4440 * VXWORKS_PLTRESOLVE_RELOCS;
4443 htab->srelplt2->size
4444 += sizeof (Elf32_External_Rela)
4445 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4448 /* Every PLT entry has an associated GOT entry in
4450 htab->sgotplt->size += 4;
4456 ent->plt.offset = (bfd_vma) -1;
4460 h->plt.plist = NULL;
4467 h->plt.plist = NULL;
4471 eh = (struct ppc_elf_link_hash_entry *) h;
4472 if (eh->elf.got.refcount > 0)
4474 /* Make sure this symbol is output as a dynamic symbol. */
4475 if (eh->elf.dynindx == -1
4476 && !eh->elf.forced_local)
4478 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4482 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4483 && !eh->elf.def_dynamic)
4484 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4485 eh->elf.got.offset = (bfd_vma) -1;
4489 unsigned int need = 0;
4490 if ((eh->tls_mask & TLS_TLS) != 0)
4492 if ((eh->tls_mask & TLS_LD) != 0)
4494 if ((eh->tls_mask & TLS_GD) != 0)
4496 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4498 if ((eh->tls_mask & TLS_DTPREL) != 0)
4503 eh->elf.got.offset = allocate_got (htab, need);
4504 dyn = htab->elf.dynamic_sections_created;
4506 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4507 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4508 || eh->elf.root.type != bfd_link_hash_undefweak))
4510 /* All the entries we allocated need relocs.
4511 Except LD only needs one. */
4512 if ((eh->tls_mask & TLS_LD) != 0)
4514 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4519 eh->elf.got.offset = (bfd_vma) -1;
4521 if (eh->dyn_relocs == NULL)
4524 /* In the shared -Bsymbolic case, discard space allocated for
4525 dynamic pc-relative relocs against symbols which turn out to be
4526 defined in regular objects. For the normal shared case, discard
4527 space for relocs that have become local due to symbol visibility
4532 /* Relocs that use pc_count are those that appear on a call insn,
4533 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4534 generated via assembly. We want calls to protected symbols to
4535 resolve directly to the function rather than going via the plt.
4536 If people want function pointer comparisons to work as expected
4537 then they should avoid writing weird assembly. */
4538 if (SYMBOL_CALLS_LOCAL (info, h))
4540 struct ppc_elf_dyn_relocs **pp;
4542 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4544 p->count -= p->pc_count;
4553 /* Also discard relocs on undefined weak syms with non-default
4555 if (eh->dyn_relocs != NULL
4556 && h->root.type == bfd_link_hash_undefweak)
4558 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4559 eh->dyn_relocs = NULL;
4561 /* Make sure undefined weak symbols are output as a dynamic
4563 else if (h->dynindx == -1
4564 && !h->forced_local)
4566 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4571 else if (ELIMINATE_COPY_RELOCS)
4573 /* For the non-shared case, discard space for relocs against
4574 symbols which turn out to need copy relocs or are not
4581 /* Make sure this symbol is output as a dynamic symbol.
4582 Undefined weak syms won't yet be marked as dynamic. */
4583 if (h->dynindx == -1
4584 && !h->forced_local)
4586 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4590 /* If that succeeded, we know we'll be keeping all the
4592 if (h->dynindx != -1)
4596 eh->dyn_relocs = NULL;
4601 /* Finally, allocate space. */
4602 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4604 asection *sreloc = elf_section_data (p->sec)->sreloc;
4605 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4611 /* Find any dynamic relocs that apply to read-only sections. */
4614 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4616 struct ppc_elf_dyn_relocs *p;
4618 if (h->root.type == bfd_link_hash_indirect)
4621 if (h->root.type == bfd_link_hash_warning)
4622 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4624 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4626 asection *s = p->sec->output_section;
4629 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4630 == (SEC_READONLY | SEC_ALLOC)))
4632 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4634 /* Not an error, just cut short the traversal. */
4641 /* Set the sizes of the dynamic sections. */
4644 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4645 struct bfd_link_info *info)
4647 struct ppc_elf_link_hash_table *htab;
4653 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4656 htab = ppc_elf_hash_table (info);
4657 BFD_ASSERT (htab->elf.dynobj != NULL);
4659 if (elf_hash_table (info)->dynamic_sections_created)
4661 /* Set the contents of the .interp section to the interpreter. */
4662 if (info->executable)
4664 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4665 BFD_ASSERT (s != NULL);
4666 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4667 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4671 if (htab->plt_type == PLT_OLD)
4672 htab->got_header_size = 16;
4673 else if (htab->plt_type == PLT_NEW)
4674 htab->got_header_size = 12;
4676 /* Set up .got offsets for local syms, and space for local dynamic
4678 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4680 bfd_signed_vma *local_got;
4681 bfd_signed_vma *end_local_got;
4683 bfd_size_type locsymcount;
4684 Elf_Internal_Shdr *symtab_hdr;
4686 if (!is_ppc_elf_target (ibfd->xvec))
4689 for (s = ibfd->sections; s != NULL; s = s->next)
4691 struct ppc_elf_dyn_relocs *p;
4693 for (p = ((struct ppc_elf_dyn_relocs *)
4694 elf_section_data (s)->local_dynrel);
4698 if (!bfd_is_abs_section (p->sec)
4699 && bfd_is_abs_section (p->sec->output_section))
4701 /* Input section has been discarded, either because
4702 it is a copy of a linkonce section or due to
4703 linker script /DISCARD/, so we'll be discarding
4706 else if (p->count != 0)
4708 elf_section_data (p->sec)->sreloc->size
4709 += p->count * sizeof (Elf32_External_Rela);
4710 if ((p->sec->output_section->flags
4711 & (SEC_READONLY | SEC_ALLOC))
4712 == (SEC_READONLY | SEC_ALLOC))
4713 info->flags |= DF_TEXTREL;
4718 local_got = elf_local_got_refcounts (ibfd);
4722 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4723 locsymcount = symtab_hdr->sh_info;
4724 end_local_got = local_got + locsymcount;
4725 lgot_masks = (char *) end_local_got;
4726 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4729 if (*lgot_masks == (TLS_TLS | TLS_LD))
4731 /* If just an LD reloc, we'll just use
4732 htab->tlsld_got.offset. */
4733 htab->tlsld_got.refcount += 1;
4734 *local_got = (bfd_vma) -1;
4738 unsigned int need = 0;
4739 if ((*lgot_masks & TLS_TLS) != 0)
4741 if ((*lgot_masks & TLS_GD) != 0)
4743 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4745 if ((*lgot_masks & TLS_DTPREL) != 0)
4750 *local_got = allocate_got (htab, need);
4752 htab->relgot->size += (need
4753 * (sizeof (Elf32_External_Rela) / 4));
4757 *local_got = (bfd_vma) -1;
4760 if (htab->tlsld_got.refcount > 0)
4762 htab->tlsld_got.offset = allocate_got (htab, 8);
4764 htab->relgot->size += sizeof (Elf32_External_Rela);
4767 htab->tlsld_got.offset = (bfd_vma) -1;
4769 /* Allocate space for global sym dynamic relocs. */
4770 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4772 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
4774 unsigned int g_o_t = 32768;
4776 /* If we haven't allocated the header, do so now. When we get here,
4777 for old plt/got the got size will be 0 to 32764 (not allocated),
4778 or 32780 to 65536 (header allocated). For new plt/got, the
4779 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4780 if (htab->got->size <= 32768)
4782 g_o_t = htab->got->size;
4783 if (htab->plt_type == PLT_OLD)
4785 htab->got->size += htab->got_header_size;
4788 htab->elf.hgot->root.u.def.value = g_o_t;
4791 if (htab->glink != NULL && htab->glink->size != 0)
4793 htab->glink_pltresolve = htab->glink->size;
4794 /* Space for the branch table. */
4795 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4796 /* Pad out to align the start of PLTresolve. */
4797 htab->glink->size += -htab->glink->size & 15;
4798 htab->glink->size += GLINK_PLTRESOLVE;
4800 if (htab->emit_stub_syms)
4802 struct elf_link_hash_entry *sh;
4803 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4804 TRUE, FALSE, FALSE);
4807 if (sh->root.type == bfd_link_hash_new)
4809 sh->root.type = bfd_link_hash_defined;
4810 sh->root.u.def.section = htab->glink;
4811 sh->root.u.def.value = htab->glink_pltresolve;
4812 sh->ref_regular = 1;
4813 sh->def_regular = 1;
4814 sh->ref_regular_nonweak = 1;
4815 sh->forced_local = 1;
4818 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4819 TRUE, FALSE, FALSE);
4822 if (sh->root.type == bfd_link_hash_new)
4824 sh->root.type = bfd_link_hash_defined;
4825 sh->root.u.def.section = htab->glink;
4826 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4827 sh->ref_regular = 1;
4828 sh->def_regular = 1;
4829 sh->ref_regular_nonweak = 1;
4830 sh->forced_local = 1;
4836 /* We've now determined the sizes of the various dynamic sections.
4837 Allocate memory for them. */
4839 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4841 bfd_boolean strip_section = TRUE;
4843 if ((s->flags & SEC_LINKER_CREATED) == 0)
4849 || s == htab->sgotplt
4851 || s == htab->dynbss
4852 || s == htab->dynsbss)
4854 /* We'd like to strip these sections if they aren't needed, but if
4855 we've exported dynamic symbols from them we must leave them.
4856 It's too late to tell BFD to get rid of the symbols. */
4857 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
4858 strip_section = FALSE;
4859 /* Strip this section if we don't need it; see the
4862 else if (s == htab->sdata[0].section
4863 || s == htab->sdata[1].section)
4865 /* Strip these too. */
4867 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
4871 /* Remember whether there are any relocation sections. */
4874 /* We use the reloc_count field as a counter if we need
4875 to copy relocs into the output file. */
4881 /* It's not one of our sections, so don't allocate space. */
4885 if (s->size == 0 && strip_section)
4887 /* If we don't need this section, strip it from the
4888 output file. This is mostly to handle .rela.bss and
4889 .rela.plt. We must create both sections in
4890 create_dynamic_sections, because they must be created
4891 before the linker maps input sections to output
4892 sections. The linker does that before
4893 adjust_dynamic_symbol is called, and it is that
4894 function which decides whether anything needs to go
4895 into these sections. */
4896 s->flags |= SEC_EXCLUDE;
4900 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4903 /* Allocate memory for the section contents. */
4904 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4905 if (s->contents == NULL)
4909 if (htab->elf.dynamic_sections_created)
4911 /* Add some entries to the .dynamic section. We fill in the
4912 values later, in ppc_elf_finish_dynamic_sections, but we
4913 must add the entries now so that we get the correct size for
4914 the .dynamic section. The DT_DEBUG entry is filled in by the
4915 dynamic linker and used by the debugger. */
4916 #define add_dynamic_entry(TAG, VAL) \
4917 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4919 if (info->executable)
4921 if (!add_dynamic_entry (DT_DEBUG, 0))
4925 if (htab->plt != NULL && htab->plt->size != 0)
4927 if (!add_dynamic_entry (DT_PLTGOT, 0)
4928 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4929 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4930 || !add_dynamic_entry (DT_JMPREL, 0))
4934 if (htab->glink != NULL && htab->glink->size != 0)
4936 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4942 if (!add_dynamic_entry (DT_RELA, 0)
4943 || !add_dynamic_entry (DT_RELASZ, 0)
4944 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4948 /* If any dynamic relocs apply to a read-only section, then we
4949 need a DT_TEXTREL entry. */
4950 if ((info->flags & DF_TEXTREL) == 0)
4951 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4954 if ((info->flags & DF_TEXTREL) != 0)
4956 if (!add_dynamic_entry (DT_TEXTREL, 0))
4960 #undef add_dynamic_entry
4965 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4967 static const int shared_stub_entry[] =
4969 0x7c0802a6, /* mflr 0 */
4970 0x429f0005, /* bcl 20, 31, .Lxxx */
4971 0x7d6802a6, /* mflr 11 */
4972 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4973 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4974 0x7c0803a6, /* mtlr 0 */
4975 0x7d6903a6, /* mtctr 11 */
4976 0x4e800420, /* bctr */
4979 static const int stub_entry[] =
4981 0x3d600000, /* lis 11,xxx@ha */
4982 0x396b0000, /* addi 11,11,xxx@l */
4983 0x7d6903a6, /* mtctr 11 */
4984 0x4e800420, /* bctr */
4988 ppc_elf_relax_section (bfd *abfd,
4990 struct bfd_link_info *link_info,
4995 struct one_fixup *next;
5001 Elf_Internal_Shdr *symtab_hdr;
5002 bfd_byte *contents = NULL;
5003 Elf_Internal_Sym *isymbuf = NULL;
5004 Elf_Internal_Rela *internal_relocs = NULL;
5005 Elf_Internal_Rela *irel, *irelend;
5006 struct one_fixup *fixups = NULL;
5007 bfd_boolean changed;
5008 struct ppc_elf_link_hash_table *htab;
5009 bfd_size_type trampoff;
5014 /* Nothing to do if there are no relocations, and no need to do
5015 anything with non-alloc sections. */
5016 if ((isec->flags & SEC_ALLOC) == 0
5017 || (isec->flags & SEC_RELOC) == 0
5018 || isec->reloc_count == 0)
5021 trampoff = (isec->size + 3) & (bfd_vma) -4;
5022 /* Space for a branch around any trampolines. */
5025 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5027 /* Get a copy of the native relocations. */
5028 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5029 link_info->keep_memory);
5030 if (internal_relocs == NULL)
5033 htab = ppc_elf_hash_table (link_info);
5034 got2 = bfd_get_section_by_name (abfd, ".got2");
5036 irelend = internal_relocs + isec->reloc_count;
5037 for (irel = internal_relocs; irel < irelend; irel++)
5039 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5040 bfd_vma symaddr, reladdr, toff, roff;
5042 struct one_fixup *f;
5043 size_t insn_offset = 0;
5044 bfd_vma max_branch_offset, val;
5047 unsigned char sym_type;
5052 case R_PPC_LOCAL24PC:
5053 case R_PPC_PLTREL24:
5054 max_branch_offset = 1 << 25;
5058 case R_PPC_REL14_BRTAKEN:
5059 case R_PPC_REL14_BRNTAKEN:
5060 max_branch_offset = 1 << 15;
5067 /* Get the value of the symbol referred to by the reloc. */
5068 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5070 /* A local symbol. */
5071 Elf_Internal_Sym *isym;
5073 /* Read this BFD's local symbols. */
5074 if (isymbuf == NULL)
5076 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5077 if (isymbuf == NULL)
5078 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5079 symtab_hdr->sh_info, 0,
5084 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5085 if (isym->st_shndx == SHN_UNDEF)
5086 continue; /* We can't do anything with undefined symbols. */
5087 else if (isym->st_shndx == SHN_ABS)
5088 tsec = bfd_abs_section_ptr;
5089 else if (isym->st_shndx == SHN_COMMON)
5090 tsec = bfd_com_section_ptr;
5092 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5094 toff = isym->st_value;
5095 sym_type = ELF_ST_TYPE (isym->st_info);
5099 /* Global symbol handling. */
5101 struct elf_link_hash_entry *h;
5103 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5104 h = elf_sym_hashes (abfd)[indx];
5106 while (h->root.type == bfd_link_hash_indirect
5107 || h->root.type == bfd_link_hash_warning)
5108 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5112 if (r_type == R_PPC_PLTREL24
5113 && htab->plt != NULL)
5115 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5119 if (htab->plt_type == PLT_NEW)
5122 toff = ent->glink_offset;
5127 toff = ent->plt.offset;
5133 else if (h->root.type == bfd_link_hash_defined
5134 || h->root.type == bfd_link_hash_defweak)
5136 tsec = h->root.u.def.section;
5137 toff = h->root.u.def.value;
5145 /* If the branch and target are in the same section, you have
5146 no hope of adding stubs. We'll error out later should the
5151 /* There probably isn't any reason to handle symbols in
5152 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5153 attribute for a code section, and we are only looking at
5154 branches. However, implement it correctly here as a
5155 reference for other target relax_section functions. */
5156 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5158 /* At this stage in linking, no SEC_MERGE symbol has been
5159 adjusted, so all references to such symbols need to be
5160 passed through _bfd_merged_section_offset. (Later, in
5161 relocate_section, all SEC_MERGE symbols *except* for
5162 section symbols have been adjusted.)
5164 gas may reduce relocations against symbols in SEC_MERGE
5165 sections to a relocation against the section symbol when
5166 the original addend was zero. When the reloc is against
5167 a section symbol we should include the addend in the
5168 offset passed to _bfd_merged_section_offset, since the
5169 location of interest is the original symbol. On the
5170 other hand, an access to "sym+addend" where "sym" is not
5171 a section symbol should not include the addend; Such an
5172 access is presumed to be an offset from "sym"; The
5173 location of interest is just "sym". */
5174 if (sym_type == STT_SECTION)
5175 toff += irel->r_addend;
5177 toff = _bfd_merged_section_offset (abfd, &tsec,
5178 elf_section_data (tsec)->sec_info,
5181 if (sym_type != STT_SECTION)
5182 toff += irel->r_addend;
5184 /* PLTREL24 addends are special. */
5185 else if (r_type != R_PPC_PLTREL24)
5186 toff += irel->r_addend;
5188 /* Attempted -shared link of non-pic code loses. */
5189 if (tsec->output_section == NULL)
5192 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5194 roff = irel->r_offset;
5195 reladdr = isec->output_section->vma + isec->output_offset + roff;
5197 /* If the branch is in range, no need to do anything. */
5198 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5201 /* Look for an existing fixup to this address. */
5202 for (f = fixups; f ; f = f->next)
5203 if (f->tsec == tsec && f->toff == toff)
5209 unsigned long stub_rtype;
5211 val = trampoff - roff;
5212 if (val >= max_branch_offset)
5213 /* Oh dear, we can't reach a trampoline. Don't try to add
5214 one. We'll report an error later. */
5217 if (link_info->shared)
5219 size = 4 * ARRAY_SIZE (shared_stub_entry);
5221 stub_rtype = R_PPC_RELAX32PC;
5225 size = 4 * ARRAY_SIZE (stub_entry);
5227 stub_rtype = R_PPC_RELAX32;
5230 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5231 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5233 if (tsec == htab->plt
5234 || tsec == htab->glink)
5235 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5237 /* Hijack the old relocation. Since we need two
5238 relocations for this use a "composite" reloc. */
5239 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5241 irel->r_offset = trampoff + insn_offset;
5243 /* Record the fixup so we don't do it again this section. */
5244 f = bfd_malloc (sizeof (*f));
5248 f->trampoff = trampoff;
5255 val = f->trampoff - roff;
5256 if (val >= max_branch_offset)
5259 /* Nop out the reloc, since we're finalizing things here. */
5260 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5263 /* Get the section contents. */
5264 if (contents == NULL)
5266 /* Get cached copy if it exists. */
5267 if (elf_section_data (isec)->this_hdr.contents != NULL)
5268 contents = elf_section_data (isec)->this_hdr.contents;
5271 /* Go get them off disk. */
5272 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5277 /* Fix up the existing branch to hit the trampoline. */
5278 hit_addr = contents + roff;
5282 case R_PPC_LOCAL24PC:
5283 case R_PPC_PLTREL24:
5284 t0 = bfd_get_32 (abfd, hit_addr);
5286 t0 |= val & 0x3fffffc;
5287 bfd_put_32 (abfd, t0, hit_addr);
5291 case R_PPC_REL14_BRTAKEN:
5292 case R_PPC_REL14_BRNTAKEN:
5293 t0 = bfd_get_32 (abfd, hit_addr);
5296 bfd_put_32 (abfd, t0, hit_addr);
5301 /* Write out the trampolines. */
5302 changed = fixups != NULL;
5312 struct one_fixup *f = fixups;
5313 fixups = fixups->next;
5318 contents = bfd_realloc (contents, trampoff);
5319 if (contents == NULL)
5322 isec->size = (isec->size + 3) & (bfd_vma) -4;
5323 /* Branch around the trampolines. */
5324 val = trampoff - isec->size + 0x48000000;
5325 dest = contents + isec->size;
5326 isec->size = trampoff;
5327 bfd_put_32 (abfd, val, dest);
5330 if (link_info->shared)
5332 stub = shared_stub_entry;
5333 size = ARRAY_SIZE (shared_stub_entry);
5338 size = ARRAY_SIZE (stub_entry);
5342 while (dest < contents + trampoff)
5344 bfd_put_32 (abfd, stub[i], dest);
5350 BFD_ASSERT (i == 0);
5354 && symtab_hdr->contents != (unsigned char *) isymbuf)
5356 if (! link_info->keep_memory)
5360 /* Cache the symbols for elf_link_input_bfd. */
5361 symtab_hdr->contents = (unsigned char *) isymbuf;
5365 if (contents != NULL
5366 && elf_section_data (isec)->this_hdr.contents != contents)
5368 if (!changed && !link_info->keep_memory)
5372 /* Cache the section contents for elf_link_input_bfd. */
5373 elf_section_data (isec)->this_hdr.contents = contents;
5377 if (elf_section_data (isec)->relocs != internal_relocs)
5380 free (internal_relocs);
5382 elf_section_data (isec)->relocs = internal_relocs;
5389 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5391 if (contents != NULL
5392 && elf_section_data (isec)->this_hdr.contents != contents)
5394 if (internal_relocs != NULL
5395 && elf_section_data (isec)->relocs != internal_relocs)
5396 free (internal_relocs);
5400 /* What to do when ld finds relocations against symbols defined in
5401 discarded sections. */
5404 ppc_elf_action_discarded (asection *sec)
5406 if (strcmp (".fixup", sec->name) == 0)
5409 if (strcmp (".got2", sec->name) == 0)
5412 return _bfd_elf_default_action_discarded (sec);
5415 /* Fill in the address for a pointer generated in a linker section. */
5418 elf_finish_pointer_linker_section (bfd *input_bfd,
5419 elf_linker_section_t *lsect,
5420 struct elf_link_hash_entry *h,
5422 const Elf_Internal_Rela *rel)
5424 elf_linker_section_pointers_t *linker_section_ptr;
5426 BFD_ASSERT (lsect != NULL);
5430 /* Handle global symbol. */
5431 struct ppc_elf_link_hash_entry *eh;
5433 eh = (struct ppc_elf_link_hash_entry *) h;
5434 BFD_ASSERT (eh->elf.def_regular);
5435 linker_section_ptr = eh->linker_section_pointer;
5439 /* Handle local symbol. */
5440 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5442 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5443 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5446 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5449 BFD_ASSERT (linker_section_ptr != NULL);
5451 /* Offset will always be a multiple of four, so use the bottom bit
5452 as a "written" flag. */
5453 if ((linker_section_ptr->offset & 1) == 0)
5455 bfd_put_32 (lsect->section->owner,
5456 relocation + linker_section_ptr->addend,
5457 lsect->section->contents + linker_section_ptr->offset);
5458 linker_section_ptr->offset += 1;
5461 relocation = (lsect->section->output_offset
5462 + linker_section_ptr->offset - 1
5467 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5468 lsect->name, (long) relocation, (long) relocation);
5471 /* Subtract out the addend, because it will get added back in by the normal
5473 return relocation - linker_section_ptr->addend;
5476 /* The RELOCATE_SECTION function is called by the ELF backend linker
5477 to handle the relocations for a section.
5479 The relocs are always passed as Rela structures; if the section
5480 actually uses Rel structures, the r_addend field will always be
5483 This function is responsible for adjust the section contents as
5484 necessary, and (if using Rela relocs and generating a
5485 relocatable output file) adjusting the reloc addend as
5488 This function does not have to worry about setting the reloc
5489 address or the reloc symbol index.
5491 LOCAL_SYMS is a pointer to the swapped in local symbols.
5493 LOCAL_SECTIONS is an array giving the section in the input file
5494 corresponding to the st_shndx field of each local symbol.
5496 The global hash table entry for the global symbols can be found
5497 via elf_sym_hashes (input_bfd).
5499 When generating relocatable output, this function must handle
5500 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5501 going to be the section symbol corresponding to the output
5502 section, which means that the addend must be adjusted
5506 ppc_elf_relocate_section (bfd *output_bfd,
5507 struct bfd_link_info *info,
5509 asection *input_section,
5511 Elf_Internal_Rela *relocs,
5512 Elf_Internal_Sym *local_syms,
5513 asection **local_sections)
5515 Elf_Internal_Shdr *symtab_hdr;
5516 struct elf_link_hash_entry **sym_hashes;
5517 struct ppc_elf_link_hash_table *htab;
5518 Elf_Internal_Rela *rel;
5519 Elf_Internal_Rela *relend;
5520 Elf_Internal_Rela outrel;
5522 asection *got2, *sreloc = NULL;
5523 bfd_vma *local_got_offsets;
5524 bfd_boolean ret = TRUE;
5527 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5528 "%ld relocations%s",
5529 input_bfd, input_section,
5530 (long) input_section->reloc_count,
5531 (info->relocatable) ? " (relocatable)" : "");
5534 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5536 if (info->relocatable)
5542 relend = relocs + input_section->reloc_count;
5543 for (; rel < relend; rel++)
5545 enum elf_ppc_reloc_type r_type;
5547 r_type = ELF32_R_TYPE (rel->r_info);
5548 if (r_type == R_PPC_PLTREL24
5549 && rel->r_addend >= 32768)
5551 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5552 addend specifies the GOT pointer offset within .got2. */
5553 rel->r_addend += got2->output_offset;
5559 /* Initialize howto table if not already done. */
5560 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5561 ppc_elf_howto_init ();
5563 htab = ppc_elf_hash_table (info);
5564 local_got_offsets = elf_local_got_offsets (input_bfd);
5565 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5566 sym_hashes = elf_sym_hashes (input_bfd);
5568 relend = relocs + input_section->reloc_count;
5569 for (; rel < relend; rel++)
5571 enum elf_ppc_reloc_type r_type;
5573 bfd_reloc_status_type r;
5574 Elf_Internal_Sym *sym;
5576 struct elf_link_hash_entry *h;
5577 const char *sym_name;
5578 reloc_howto_type *howto;
5579 unsigned long r_symndx;
5581 bfd_vma branch_bit, insn, from;
5582 bfd_boolean unresolved_reloc;
5584 unsigned int tls_type, tls_mask, tls_gd;
5586 r_type = ELF32_R_TYPE (rel->r_info);
5590 unresolved_reloc = FALSE;
5592 r_symndx = ELF32_R_SYM (rel->r_info);
5594 if (r_symndx < symtab_hdr->sh_info)
5596 sym = local_syms + r_symndx;
5597 sec = local_sections[r_symndx];
5598 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5600 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5604 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5605 r_symndx, symtab_hdr, sym_hashes,
5607 unresolved_reloc, warned);
5609 sym_name = h->root.root.string;
5612 /* TLS optimizations. Replace instruction sequences and relocs
5613 based on information we collected in tls_optimize. We edit
5614 RELOCS so that --emit-relocs will output something sensible
5615 for the final instruction stream. */
5618 if (IS_PPC_TLS_RELOC (r_type))
5621 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5622 else if (local_got_offsets != NULL)
5625 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5626 tls_mask = lgot_masks[r_symndx];
5630 /* Ensure reloc mapping code below stays sane. */
5631 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5632 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5633 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5634 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5635 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5636 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5637 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5638 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5645 case R_PPC_GOT_TPREL16:
5646 case R_PPC_GOT_TPREL16_LO:
5648 && (tls_mask & TLS_TPREL) == 0)
5651 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5653 insn |= 0x3c020000; /* addis 0,2,0 */
5654 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5655 r_type = R_PPC_TPREL16_HA;
5656 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5662 && (tls_mask & TLS_TPREL) == 0)
5665 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5666 if ((insn & ((31 << 26) | (31 << 11)))
5667 == ((31 << 26) | (2 << 11)))
5668 rtra = insn & ((1 << 26) - (1 << 16));
5669 else if ((insn & ((31 << 26) | (31 << 16)))
5670 == ((31 << 26) | (2 << 16)))
5671 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5674 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5677 else if ((insn & (31 << 1)) == 23 << 1
5678 && ((insn & (31 << 6)) < 14 << 6
5679 || ((insn & (31 << 6)) >= 16 << 6
5680 && (insn & (31 << 6)) < 24 << 6)))
5681 /* load and store indexed -> dform. */
5682 insn = (32 | ((insn >> 6) & 31)) << 26;
5683 else if ((insn & (31 << 1)) == 21 << 1
5684 && (insn & (0x1a << 6)) == 0)
5685 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5686 insn = (((58 | ((insn >> 6) & 4)) << 26)
5687 | ((insn >> 6) & 1));
5688 else if ((insn & (31 << 1)) == 21 << 1
5689 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5691 insn = (58 << 26) | 2;
5695 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5696 r_type = R_PPC_TPREL16_LO;
5697 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5698 /* Was PPC_TLS which sits on insn boundary, now
5699 PPC_TPREL16_LO which is at insn+2. */
5704 case R_PPC_GOT_TLSGD16_HI:
5705 case R_PPC_GOT_TLSGD16_HA:
5706 tls_gd = TLS_TPRELGD;
5707 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5711 case R_PPC_GOT_TLSLD16_HI:
5712 case R_PPC_GOT_TLSLD16_HA:
5713 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5716 if ((tls_mask & tls_gd) != 0)
5717 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5718 + R_PPC_GOT_TPREL16);
5721 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5723 r_type = R_PPC_NONE;
5725 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5729 case R_PPC_GOT_TLSGD16:
5730 case R_PPC_GOT_TLSGD16_LO:
5731 tls_gd = TLS_TPRELGD;
5732 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5733 goto tls_get_addr_check;
5736 case R_PPC_GOT_TLSLD16:
5737 case R_PPC_GOT_TLSLD16_LO:
5738 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5741 if (rel + 1 < relend)
5743 enum elf_ppc_reloc_type r_type2;
5744 unsigned long r_symndx2;
5745 struct elf_link_hash_entry *h2;
5746 bfd_vma insn1, insn2;
5749 /* The next instruction should be a call to
5750 __tls_get_addr. Peek at the reloc to be sure. */
5751 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5752 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5753 if (r_symndx2 < symtab_hdr->sh_info
5754 || (r_type2 != R_PPC_REL14
5755 && r_type2 != R_PPC_REL14_BRTAKEN
5756 && r_type2 != R_PPC_REL14_BRNTAKEN
5757 && r_type2 != R_PPC_REL24
5758 && r_type2 != R_PPC_PLTREL24))
5761 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5762 while (h2->root.type == bfd_link_hash_indirect
5763 || h2->root.type == bfd_link_hash_warning)
5764 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5765 if (h2 == NULL || h2 != htab->tls_get_addr)
5768 /* OK, it checks out. Replace the call. */
5769 offset = rel[1].r_offset;
5770 insn1 = bfd_get_32 (output_bfd,
5771 contents + rel->r_offset - 2);
5772 if ((tls_mask & tls_gd) != 0)
5775 insn1 &= (1 << 26) - 1;
5776 insn1 |= 32 << 26; /* lwz */
5777 insn2 = 0x7c631214; /* add 3,3,2 */
5778 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5779 rel[1].r_addend = 0;
5780 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5781 + R_PPC_GOT_TPREL16);
5782 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5787 insn1 = 0x3c620000; /* addis 3,2,0 */
5788 insn2 = 0x38630000; /* addi 3,3,0 */
5791 /* Was an LD reloc. */
5793 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5795 r_type = R_PPC_TPREL16_HA;
5796 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5797 rel[1].r_info = ELF32_R_INFO (r_symndx,
5799 rel[1].r_offset += 2;
5800 rel[1].r_addend = rel->r_addend;
5802 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5803 bfd_put_32 (output_bfd, insn2, contents + offset);
5806 /* We changed the symbol on an LD reloc. Start over
5807 in order to get h, sym, sec etc. right. */
5816 /* Handle other relocations that tweak non-addend part of insn. */
5823 /* Branch taken prediction relocations. */
5824 case R_PPC_ADDR14_BRTAKEN:
5825 case R_PPC_REL14_BRTAKEN:
5826 branch_bit = BRANCH_PREDICT_BIT;
5829 /* Branch not taken prediction relocations. */
5830 case R_PPC_ADDR14_BRNTAKEN:
5831 case R_PPC_REL14_BRNTAKEN:
5832 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5833 insn &= ~BRANCH_PREDICT_BIT;
5836 from = (rel->r_offset
5837 + input_section->output_offset
5838 + input_section->output_section->vma);
5840 /* Invert 'y' bit if not the default. */
5841 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5842 insn ^= BRANCH_PREDICT_BIT;
5844 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5848 addend = rel->r_addend;
5851 if (r_type < R_PPC_max)
5852 howto = ppc_elf_howto_table[r_type];
5856 (*_bfd_error_handler)
5857 (_("%B: unknown relocation type %d for symbol %s"),
5858 input_bfd, (int) r_type, sym_name);
5860 bfd_set_error (bfd_error_bad_value);
5866 case R_PPC_EMB_MRKREF:
5867 case R_PPC_GNU_VTINHERIT:
5868 case R_PPC_GNU_VTENTRY:
5871 /* GOT16 relocations. Like an ADDR16 using the symbol's
5872 address in the GOT as relocation value instead of the
5873 symbol's value itself. Also, create a GOT entry for the
5874 symbol and put the symbol value there. */
5875 case R_PPC_GOT_TLSGD16:
5876 case R_PPC_GOT_TLSGD16_LO:
5877 case R_PPC_GOT_TLSGD16_HI:
5878 case R_PPC_GOT_TLSGD16_HA:
5879 tls_type = TLS_TLS | TLS_GD;
5882 case R_PPC_GOT_TLSLD16:
5883 case R_PPC_GOT_TLSLD16_LO:
5884 case R_PPC_GOT_TLSLD16_HI:
5885 case R_PPC_GOT_TLSLD16_HA:
5886 tls_type = TLS_TLS | TLS_LD;
5889 case R_PPC_GOT_TPREL16:
5890 case R_PPC_GOT_TPREL16_LO:
5891 case R_PPC_GOT_TPREL16_HI:
5892 case R_PPC_GOT_TPREL16_HA:
5893 tls_type = TLS_TLS | TLS_TPREL;
5896 case R_PPC_GOT_DTPREL16:
5897 case R_PPC_GOT_DTPREL16_LO:
5898 case R_PPC_GOT_DTPREL16_HI:
5899 case R_PPC_GOT_DTPREL16_HA:
5900 tls_type = TLS_TLS | TLS_DTPREL;
5904 case R_PPC_GOT16_LO:
5905 case R_PPC_GOT16_HI:
5906 case R_PPC_GOT16_HA:
5909 /* Relocation is to the entry for this symbol in the global
5915 if (htab->got == NULL)
5919 if (tls_type == (TLS_TLS | TLS_LD)
5921 || !h->def_dynamic))
5922 offp = &htab->tlsld_got.offset;
5926 dyn = htab->elf.dynamic_sections_created;
5927 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5929 && SYMBOL_REFERENCES_LOCAL (info, h)))
5930 /* This is actually a static link, or it is a
5931 -Bsymbolic link and the symbol is defined
5932 locally, or the symbol was forced to be local
5933 because of a version file. */
5938 unresolved_reloc = FALSE;
5940 offp = &h->got.offset;
5944 if (local_got_offsets == NULL)
5946 offp = &local_got_offsets[r_symndx];
5949 /* The offset must always be a multiple of 4. We use the
5950 least significant bit to record whether we have already
5951 processed this entry. */
5957 unsigned int tls_m = (tls_mask
5958 & (TLS_LD | TLS_GD | TLS_DTPREL
5959 | TLS_TPREL | TLS_TPRELGD));
5961 if (offp == &htab->tlsld_got.offset)
5967 /* We might have multiple got entries for this sym.
5968 Initialize them all. */
5973 if ((tls_m & TLS_LD) != 0)
5975 tls_ty = TLS_TLS | TLS_LD;
5978 else if ((tls_m & TLS_GD) != 0)
5980 tls_ty = TLS_TLS | TLS_GD;
5983 else if ((tls_m & TLS_DTPREL) != 0)
5985 tls_ty = TLS_TLS | TLS_DTPREL;
5986 tls_m &= ~TLS_DTPREL;
5988 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5990 tls_ty = TLS_TLS | TLS_TPREL;
5994 /* Generate relocs for the dynamic linker. */
5995 if ((info->shared || indx != 0)
5997 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5998 || h->root.type != bfd_link_hash_undefweak))
6000 outrel.r_offset = (htab->got->output_section->vma
6001 + htab->got->output_offset
6003 outrel.r_addend = 0;
6004 if (tls_ty & (TLS_LD | TLS_GD))
6006 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6007 if (tls_ty == (TLS_TLS | TLS_GD))
6009 loc = htab->relgot->contents;
6010 loc += (htab->relgot->reloc_count++
6011 * sizeof (Elf32_External_Rela));
6012 bfd_elf32_swap_reloca_out (output_bfd,
6014 outrel.r_offset += 4;
6016 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6019 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6020 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6021 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6022 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6024 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6026 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6029 outrel.r_addend += relocation;
6030 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6031 outrel.r_addend -= htab->elf.tls_sec->vma;
6033 loc = htab->relgot->contents;
6034 loc += (htab->relgot->reloc_count++
6035 * sizeof (Elf32_External_Rela));
6036 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6039 /* Init the .got section contents if we're not
6040 emitting a reloc. */
6043 bfd_vma value = relocation;
6045 if (tls_ty == (TLS_TLS | TLS_LD))
6047 else if (tls_ty != 0)
6049 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6050 if (tls_ty == (TLS_TLS | TLS_TPREL))
6051 value += DTP_OFFSET - TP_OFFSET;
6053 if (tls_ty == (TLS_TLS | TLS_GD))
6055 bfd_put_32 (output_bfd, value,
6056 htab->got->contents + off + 4);
6060 bfd_put_32 (output_bfd, value,
6061 htab->got->contents + off);
6065 if (tls_ty & (TLS_LD | TLS_GD))
6074 if (off >= (bfd_vma) -2)
6077 if ((tls_type & TLS_TLS) != 0)
6079 if (tls_type != (TLS_TLS | TLS_LD))
6081 if ((tls_mask & TLS_LD) != 0
6083 || !h->def_dynamic))
6085 if (tls_type != (TLS_TLS | TLS_GD))
6087 if ((tls_mask & TLS_GD) != 0)
6089 if (tls_type != (TLS_TLS | TLS_DTPREL))
6091 if ((tls_mask & TLS_DTPREL) != 0)
6098 relocation = htab->got->output_offset + off;
6099 relocation -= htab->elf.hgot->root.u.def.value;
6101 /* Addends on got relocations don't make much sense.
6102 x+off@got is actually x@got+off, and since the got is
6103 generated by a hash table traversal, the value in the
6104 got at entry m+n bears little relation to the entry m. */
6106 (*_bfd_error_handler)
6107 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6110 (long) rel->r_offset,
6116 /* Relocations that need no special processing. */
6117 case R_PPC_LOCAL24PC:
6118 /* It makes no sense to point a local relocation
6119 at a symbol not in this object. */
6120 if (unresolved_reloc)
6122 if (! (*info->callbacks->undefined_symbol) (info,
6123 h->root.root.string,
6133 case R_PPC_DTPREL16:
6134 case R_PPC_DTPREL16_LO:
6135 case R_PPC_DTPREL16_HI:
6136 case R_PPC_DTPREL16_HA:
6137 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6140 /* Relocations that may need to be propagated if this is a shared
6143 case R_PPC_TPREL16_LO:
6144 case R_PPC_TPREL16_HI:
6145 case R_PPC_TPREL16_HA:
6146 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6147 /* The TPREL16 relocs shouldn't really be used in shared
6148 libs as they will result in DT_TEXTREL being set, but
6149 support them anyway. */
6153 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6156 case R_PPC_DTPREL32:
6157 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6160 case R_PPC_DTPMOD32:
6166 case R_PPC_REL16_LO:
6167 case R_PPC_REL16_HI:
6168 case R_PPC_REL16_HA:
6174 case R_PPC_REL14_BRTAKEN:
6175 case R_PPC_REL14_BRNTAKEN:
6176 /* If these relocations are not to a named symbol, they can be
6177 handled right here, no need to bother the dynamic linker. */
6178 if (SYMBOL_REFERENCES_LOCAL (info, h)
6179 || h == htab->elf.hgot)
6183 /* Relocations that always need to be propagated if this is a shared
6188 case R_PPC_ADDR16_LO:
6189 case R_PPC_ADDR16_HI:
6190 case R_PPC_ADDR16_HA:
6192 case R_PPC_ADDR14_BRTAKEN:
6193 case R_PPC_ADDR14_BRNTAKEN:
6196 /* r_symndx will be zero only for relocs against symbols
6197 from removed linkonce sections, or sections discarded by
6204 if ((input_section->flags & SEC_ALLOC) == 0)
6210 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6211 || h->root.type != bfd_link_hash_undefweak)
6212 && (MUST_BE_DYN_RELOC (r_type)
6213 || !SYMBOL_CALLS_LOCAL (info, h)))
6214 || (ELIMINATE_COPY_RELOCS
6220 && !h->def_regular))
6225 fprintf (stderr, "ppc_elf_relocate_section needs to "
6226 "create relocation for %s\n",
6227 (h && h->root.root.string
6228 ? h->root.root.string : "<unknown>"));
6231 /* When generating a shared object, these relocations
6232 are copied into the output file to be resolved at run
6238 name = (bfd_elf_string_from_elf_section
6240 elf_elfheader (input_bfd)->e_shstrndx,
6241 elf_section_data (input_section)->rel_hdr.sh_name));
6245 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
6246 && strcmp (bfd_get_section_name (input_bfd,
6250 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6251 BFD_ASSERT (sreloc != NULL);
6257 _bfd_elf_section_offset (output_bfd, info, input_section,
6259 if (outrel.r_offset == (bfd_vma) -1
6260 || outrel.r_offset == (bfd_vma) -2)
6261 skip = (int) outrel.r_offset;
6262 outrel.r_offset += (input_section->output_section->vma
6263 + input_section->output_offset);
6266 memset (&outrel, 0, sizeof outrel);
6267 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6269 unresolved_reloc = FALSE;
6270 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6271 outrel.r_addend = rel->r_addend;
6275 outrel.r_addend = relocation + rel->r_addend;
6277 if (r_type == R_PPC_ADDR32)
6278 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6283 if (bfd_is_abs_section (sec))
6285 else if (sec == NULL || sec->owner == NULL)
6287 bfd_set_error (bfd_error_bad_value);
6294 /* We are turning this relocation into one
6295 against a section symbol. It would be
6296 proper to subtract the symbol's value,
6297 osec->vma, from the emitted reloc addend,
6298 but ld.so expects buggy relocs. */
6299 osec = sec->output_section;
6300 indx = elf_section_data (osec)->dynindx;
6301 BFD_ASSERT (indx > 0);
6304 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6305 indx, osec->name, osec->flags,
6306 h->root.root.string);
6310 outrel.r_info = ELF32_R_INFO (indx, r_type);
6314 loc = sreloc->contents;
6315 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6316 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6321 /* This reloc will be computed at runtime. We clear the memory
6322 so that it contains predictable value. */
6324 && ((input_section->flags & SEC_ALLOC) != 0
6325 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6327 relocation = howto->pc_relative ? outrel.r_offset : 0;
6334 case R_PPC_RELAX32PC_PLT:
6335 case R_PPC_RELAX32_PLT:
6337 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6339 if (htab->plt_type == PLT_NEW)
6340 relocation = (htab->glink->output_section->vma
6341 + htab->glink->output_offset
6342 + ent->glink_offset);
6344 relocation = (htab->plt->output_section->vma
6345 + htab->plt->output_offset
6349 if (r_type == R_PPC_RELAX32_PLT)
6353 case R_PPC_RELAX32PC:
6354 relocation -= (input_section->output_section->vma
6355 + input_section->output_offset
6356 + rel->r_offset - 4);
6365 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6366 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6368 /* We're clearing the bits for R_PPC_ADDR16_HA
6369 and R_PPC_ADDR16_LO here. */
6373 /* t0 is HA, t1 is LO */
6374 relocation += addend;
6375 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6376 t1 |= relocation & 0xffff;
6378 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6379 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6383 /* Indirect .sdata relocation. */
6384 case R_PPC_EMB_SDAI16:
6385 BFD_ASSERT (htab->sdata[0].section != NULL);
6387 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6388 h, relocation, rel);
6391 /* Indirect .sdata2 relocation. */
6392 case R_PPC_EMB_SDA2I16:
6393 BFD_ASSERT (htab->sdata[1].section != NULL);
6395 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6396 h, relocation, rel);
6399 /* Handle the TOC16 reloc. We want to use the offset within the .got
6400 section, not the actual VMA. This is appropriate when generating
6401 an embedded ELF object, for which the .got section acts like the
6402 AIX .toc section. */
6403 case R_PPC_TOC16: /* phony GOT16 relocations */
6404 BFD_ASSERT (sec != NULL);
6405 BFD_ASSERT (bfd_is_und_section (sec)
6406 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6407 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6409 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6412 case R_PPC_PLTREL24:
6413 /* Relocation is to the entry for this symbol in the
6414 procedure linkage table. */
6416 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6420 || htab->plt == NULL)
6422 /* We didn't make a PLT entry for this symbol. This
6423 happens when statically linking PIC code, or when
6424 using -Bsymbolic. */
6428 unresolved_reloc = FALSE;
6429 if (htab->plt_type == PLT_NEW)
6430 relocation = (htab->glink->output_section->vma
6431 + htab->glink->output_offset
6432 + ent->glink_offset);
6434 relocation = (htab->plt->output_section->vma
6435 + htab->plt->output_offset
6440 /* Relocate against _SDA_BASE_. */
6441 case R_PPC_SDAREL16:
6444 struct elf_link_hash_entry *sh;
6446 BFD_ASSERT (sec != NULL);
6447 name = bfd_get_section_name (abfd, sec->output_section);
6448 if (! ((CONST_STRNEQ (name, ".sdata")
6449 && (name[6] == 0 || name[6] == '.'))
6450 || (CONST_STRNEQ (name, ".sbss")
6451 && (name[5] == 0 || name[5] == '.'))))
6453 (*_bfd_error_handler)
6454 (_("%B: the target (%s) of a %s relocation is "
6455 "in the wrong output section (%s)"),
6461 sh = htab->sdata[0].sym;
6462 addend -= (sh->root.u.def.value
6463 + sh->root.u.def.section->output_offset
6464 + sh->root.u.def.section->output_section->vma);
6468 /* Relocate against _SDA2_BASE_. */
6469 case R_PPC_EMB_SDA2REL:
6472 struct elf_link_hash_entry *sh;
6474 BFD_ASSERT (sec != NULL);
6475 name = bfd_get_section_name (abfd, sec->output_section);
6476 if (! (CONST_STRNEQ (name, ".sdata2")
6477 || CONST_STRNEQ (name, ".sbss2")))
6479 (*_bfd_error_handler)
6480 (_("%B: the target (%s) of a %s relocation is "
6481 "in the wrong output section (%s)"),
6487 bfd_set_error (bfd_error_bad_value);
6491 sh = htab->sdata[1].sym;
6492 addend -= (sh->root.u.def.value
6493 + sh->root.u.def.section->output_offset
6494 + sh->root.u.def.section->output_section->vma);
6498 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6499 case R_PPC_EMB_SDA21:
6500 case R_PPC_EMB_RELSDA:
6504 struct elf_link_hash_entry *sh;
6506 BFD_ASSERT (sec != NULL);
6507 name = bfd_get_section_name (abfd, sec->output_section);
6508 if (((CONST_STRNEQ (name, ".sdata")
6509 && (name[6] == 0 || name[6] == '.'))
6510 || (CONST_STRNEQ (name, ".sbss")
6511 && (name[5] == 0 || name[5] == '.'))))
6514 sh = htab->sdata[0].sym;
6515 addend -= (sh->root.u.def.value
6516 + sh->root.u.def.section->output_offset
6517 + sh->root.u.def.section->output_section->vma);
6520 else if (CONST_STRNEQ (name, ".sdata2")
6521 || CONST_STRNEQ (name, ".sbss2"))
6524 sh = htab->sdata[1].sym;
6525 addend -= (sh->root.u.def.value
6526 + sh->root.u.def.section->output_offset
6527 + sh->root.u.def.section->output_section->vma);
6530 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6531 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6538 (*_bfd_error_handler)
6539 (_("%B: the target (%s) of a %s relocation is "
6540 "in the wrong output section (%s)"),
6546 bfd_set_error (bfd_error_bad_value);
6551 if (r_type == R_PPC_EMB_SDA21)
6552 { /* fill in register field */
6553 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6554 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6555 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6560 /* Relocate against the beginning of the section. */
6562 case R_PPC_SECTOFF_LO:
6563 case R_PPC_SECTOFF_HI:
6564 case R_PPC_SECTOFF_HA:
6565 BFD_ASSERT (sec != NULL);
6566 addend -= sec->output_section->vma;
6569 /* Negative relocations. */
6570 case R_PPC_EMB_NADDR32:
6571 case R_PPC_EMB_NADDR16:
6572 case R_PPC_EMB_NADDR16_LO:
6573 case R_PPC_EMB_NADDR16_HI:
6574 case R_PPC_EMB_NADDR16_HA:
6575 addend -= 2 * relocation;
6579 case R_PPC_GLOB_DAT:
6580 case R_PPC_JMP_SLOT:
6581 case R_PPC_RELATIVE:
6583 case R_PPC_PLTREL32:
6584 case R_PPC_PLT16_LO:
6585 case R_PPC_PLT16_HI:
6586 case R_PPC_PLT16_HA:
6588 case R_PPC_EMB_RELSEC16:
6589 case R_PPC_EMB_RELST_LO:
6590 case R_PPC_EMB_RELST_HI:
6591 case R_PPC_EMB_RELST_HA:
6592 case R_PPC_EMB_BIT_FLD:
6593 (*_bfd_error_handler)
6594 (_("%B: relocation %s is not yet supported for symbol %s."),
6599 bfd_set_error (bfd_error_invalid_operation);
6604 /* Do any further special processing. */
6610 case R_PPC_ADDR16_HA:
6611 case R_PPC_REL16_HA:
6612 case R_PPC_SECTOFF_HA:
6613 case R_PPC_TPREL16_HA:
6614 case R_PPC_DTPREL16_HA:
6615 case R_PPC_EMB_NADDR16_HA:
6616 case R_PPC_EMB_RELST_HA:
6617 /* It's just possible that this symbol is a weak symbol
6618 that's not actually defined anywhere. In that case,
6619 'sec' would be NULL, and we should leave the symbol
6620 alone (it will be set to zero elsewhere in the link). */
6625 case R_PPC_PLT16_HA:
6626 case R_PPC_GOT16_HA:
6627 case R_PPC_GOT_TLSGD16_HA:
6628 case R_PPC_GOT_TLSLD16_HA:
6629 case R_PPC_GOT_TPREL16_HA:
6630 case R_PPC_GOT_DTPREL16_HA:
6631 /* Add 0x10000 if sign bit in 0:15 is set.
6632 Bits 0:15 are not used. */
6638 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6639 "offset = %ld, addend = %ld\n",
6644 (long) rel->r_offset,
6648 if (unresolved_reloc
6649 && !((input_section->flags & SEC_DEBUGGING) != 0
6652 (*_bfd_error_handler)
6653 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6656 (long) rel->r_offset,
6662 r = _bfd_final_link_relocate (howto,
6670 if (r != bfd_reloc_ok)
6672 if (r == bfd_reloc_overflow)
6677 && h->root.type == bfd_link_hash_undefweak
6678 && howto->pc_relative)
6680 /* Assume this is a call protected by other code that
6681 detect the symbol is undefined. If this is the case,
6682 we can safely ignore the overflow. If not, the
6683 program is hosed anyway, and a little warning isn't
6689 if (! (*info->callbacks->reloc_overflow) (info,
6690 (h ? &h->root : NULL),
6701 (*_bfd_error_handler)
6702 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6703 input_bfd, input_section,
6704 (long) rel->r_offset, howto->name, sym_name, (int) r);
6711 fprintf (stderr, "\n");
6717 #define PPC_LO(v) ((v) & 0xffff)
6718 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6719 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6721 /* Finish up dynamic symbol handling. We set the contents of various
6722 dynamic sections here. */
6725 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6726 struct bfd_link_info *info,
6727 struct elf_link_hash_entry *h,
6728 Elf_Internal_Sym *sym)
6730 struct ppc_elf_link_hash_table *htab;
6731 struct plt_entry *ent;
6732 bfd_boolean doneone;
6735 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6736 h->root.root.string);
6739 htab = ppc_elf_hash_table (info);
6740 BFD_ASSERT (htab->elf.dynobj != NULL);
6743 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6744 if (ent->plt.offset != (bfd_vma) -1)
6748 Elf_Internal_Rela rela;
6750 bfd_vma reloc_index;
6752 if (htab->plt_type == PLT_NEW)
6753 reloc_index = ent->plt.offset / 4;
6756 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6757 / htab->plt_slot_size);
6758 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6759 && htab->plt_type == PLT_OLD)
6760 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6763 /* This symbol has an entry in the procedure linkage table.
6765 if (htab->plt_type == PLT_VXWORKS)
6768 const bfd_vma *plt_entry;
6770 /* The first three entries in .got.plt are reserved. */
6771 got_offset = (reloc_index + 3) * 4;
6773 /* Use the right PLT. */
6774 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6775 : ppc_elf_vxworks_plt_entry;
6777 /* Fill in the .plt on VxWorks. */
6780 bfd_vma got_offset_hi = (got_offset >> 16)
6781 + ((got_offset & 0x8000) >> 15);
6783 bfd_put_32 (output_bfd,
6784 plt_entry[0] | (got_offset_hi & 0xffff),
6785 htab->plt->contents + ent->plt.offset + 0);
6786 bfd_put_32 (output_bfd,
6787 plt_entry[1] | (got_offset & 0xffff),
6788 htab->plt->contents + ent->plt.offset + 4);
6794 + htab->elf.hgot->root.u.def.value
6795 + htab->elf.hgot->root.u.def.section->output_offset
6796 + htab->elf.hgot->root.u.def.section->output_section->vma);
6797 bfd_vma got_loc_hi = (got_loc >> 16)
6798 + ((got_loc & 0x8000) >> 15);
6800 bfd_put_32 (output_bfd,
6801 plt_entry[0] | (got_loc_hi & 0xffff),
6802 htab->plt->contents + ent->plt.offset + 0);
6803 bfd_put_32 (output_bfd,
6804 plt_entry[1] | (got_loc & 0xffff),
6805 htab->plt->contents + ent->plt.offset + 4);
6808 bfd_put_32 (output_bfd, plt_entry[2],
6809 htab->plt->contents + ent->plt.offset + 8);
6810 bfd_put_32 (output_bfd, plt_entry[3],
6811 htab->plt->contents + ent->plt.offset + 12);
6813 /* This instruction is an immediate load. The value loaded is
6814 the byte offset of the R_PPC_JMP_SLOT relocation from the
6815 start of the .rela.plt section. The value is stored in the
6816 low-order 16 bits of the load instruction. */
6817 /* NOTE: It appears that this is now an index rather than a
6818 prescaled offset. */
6819 bfd_put_32 (output_bfd,
6820 plt_entry[4] | reloc_index,
6821 htab->plt->contents + ent->plt.offset + 16);
6822 /* This instruction is a PC-relative branch whose target is
6823 the start of the PLT section. The address of this branch
6824 instruction is 20 bytes beyond the start of this PLT entry.
6825 The address is encoded in bits 6-29, inclusive. The value
6826 stored is right-shifted by two bits, permitting a 26-bit
6828 bfd_put_32 (output_bfd,
6830 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6831 htab->plt->contents + ent->plt.offset + 20);
6832 bfd_put_32 (output_bfd, plt_entry[6],
6833 htab->plt->contents + ent->plt.offset + 24);
6834 bfd_put_32 (output_bfd, plt_entry[7],
6835 htab->plt->contents + ent->plt.offset + 28);
6837 /* Fill in the GOT entry corresponding to this PLT slot with
6838 the address immediately after the the "bctr" instruction
6839 in this PLT entry. */
6840 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6841 + htab->plt->output_offset
6842 + ent->plt.offset + 16),
6843 htab->sgotplt->contents + got_offset);
6847 /* Fill in a couple of entries in .rela.plt.unloaded. */
6848 loc = htab->srelplt2->contents
6849 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6850 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6851 * sizeof (Elf32_External_Rela));
6853 /* Provide the @ha relocation for the first instruction. */
6854 rela.r_offset = (htab->plt->output_section->vma
6855 + htab->plt->output_offset
6856 + ent->plt.offset + 2);
6857 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6859 rela.r_addend = got_offset;
6860 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6861 loc += sizeof (Elf32_External_Rela);
6863 /* Provide the @l relocation for the second instruction. */
6864 rela.r_offset = (htab->plt->output_section->vma
6865 + htab->plt->output_offset
6866 + ent->plt.offset + 6);
6867 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6869 rela.r_addend = got_offset;
6870 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6871 loc += sizeof (Elf32_External_Rela);
6873 /* Provide a relocation for the GOT entry corresponding to this
6874 PLT slot. Point it at the middle of the .plt entry. */
6875 rela.r_offset = (htab->sgotplt->output_section->vma
6876 + htab->sgotplt->output_offset
6878 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
6880 rela.r_addend = ent->plt.offset + 16;
6881 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6884 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6885 In particular, the offset for the relocation is not the
6886 address of the PLT entry for this function, as specified
6887 by the ABI. Instead, the offset is set to the address of
6888 the GOT slot for this function. See EABI 4.4.4.1. */
6889 rela.r_offset = (htab->sgotplt->output_section->vma
6890 + htab->sgotplt->output_offset
6896 rela.r_offset = (htab->plt->output_section->vma
6897 + htab->plt->output_offset
6899 if (htab->plt_type == PLT_OLD)
6901 /* We don't need to fill in the .plt. The ppc dynamic
6902 linker will fill it in. */
6906 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6907 + htab->glink->output_section->vma
6908 + htab->glink->output_offset);
6909 bfd_put_32 (output_bfd, val,
6910 htab->plt->contents + ent->plt.offset);
6914 /* Fill in the entry in the .rela.plt section. */
6915 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6918 loc = (htab->relplt->contents
6919 + reloc_index * sizeof (Elf32_External_Rela));
6920 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6922 if (!h->def_regular)
6924 /* Mark the symbol as undefined, rather than as defined in
6925 the .plt section. Leave the value alone. */
6926 sym->st_shndx = SHN_UNDEF;
6927 /* If the symbol is weak, we do need to clear the value.
6928 Otherwise, the PLT entry would provide a definition for
6929 the symbol even if the symbol wasn't defined anywhere,
6930 and so the symbol would never be NULL. */
6931 if (!h->ref_regular_nonweak)
6937 if (htab->plt_type == PLT_NEW)
6942 plt = (ent->plt.offset
6943 + htab->plt->output_section->vma
6944 + htab->plt->output_offset);
6945 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6947 if (info->shared || info->pie)
6951 if (ent->addend >= 32768)
6953 + ent->sec->output_section->vma
6954 + ent->sec->output_offset);
6955 else if (htab->elf.hgot != NULL)
6956 got = (htab->elf.hgot->root.u.def.value
6957 + htab->elf.hgot->root.u.def.section->output_section->vma
6958 + htab->elf.hgot->root.u.def.section->output_offset);
6962 if (plt + 0x8000 < 0x10000)
6964 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6966 bfd_put_32 (output_bfd, MTCTR_11, p);
6968 bfd_put_32 (output_bfd, BCTR, p);
6970 bfd_put_32 (output_bfd, NOP, p);
6975 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6977 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6979 bfd_put_32 (output_bfd, MTCTR_11, p);
6981 bfd_put_32 (output_bfd, BCTR, p);
6987 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6989 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6991 bfd_put_32 (output_bfd, MTCTR_11, p);
6993 bfd_put_32 (output_bfd, BCTR, p);
6996 /* We only need one non-PIC glink stub. */
7007 Elf_Internal_Rela rela;
7010 /* This symbols needs a copy reloc. Set it up. */
7013 fprintf (stderr, ", copy");
7016 BFD_ASSERT (h->dynindx != -1);
7018 if (ppc_elf_hash_entry (h)->has_sda_refs)
7022 BFD_ASSERT (s != NULL);
7024 rela.r_offset = (h->root.u.def.value
7025 + h->root.u.def.section->output_section->vma
7026 + h->root.u.def.section->output_offset);
7027 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7029 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7030 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7034 fprintf (stderr, "\n");
7037 /* Mark some specially defined symbols as absolute. */
7038 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7039 || (!htab->is_vxworks
7040 && (h == htab->elf.hgot
7041 || strcmp (h->root.root.string,
7042 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7043 sym->st_shndx = SHN_ABS;
7048 static enum elf_reloc_type_class
7049 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7051 switch (ELF32_R_TYPE (rela->r_info))
7053 case R_PPC_RELATIVE:
7054 return reloc_class_relative;
7057 case R_PPC_JMP_SLOT:
7058 return reloc_class_plt;
7060 return reloc_class_copy;
7062 return reloc_class_normal;
7066 /* Finish up the dynamic sections. */
7069 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7070 struct bfd_link_info *info)
7074 struct ppc_elf_link_hash_table *htab;
7079 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7082 htab = ppc_elf_hash_table (info);
7083 dynobj = elf_hash_table (info)->dynobj;
7084 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7085 if (htab->is_vxworks)
7086 splt = bfd_get_section_by_name (dynobj, ".plt");
7091 if (htab->elf.hgot != NULL)
7092 got = (htab->elf.hgot->root.u.def.value
7093 + htab->elf.hgot->root.u.def.section->output_section->vma
7094 + htab->elf.hgot->root.u.def.section->output_offset);
7096 if (htab->elf.dynamic_sections_created)
7098 Elf32_External_Dyn *dyncon, *dynconend;
7100 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7102 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7103 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7104 for (; dyncon < dynconend; dyncon++)
7106 Elf_Internal_Dyn dyn;
7109 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7114 if (htab->is_vxworks)
7118 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7122 dyn.d_un.d_val = htab->relplt->size;
7127 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7131 dyn.d_un.d_ptr = got;
7135 if (htab->is_vxworks)
7138 dyn.d_un.d_ptr -= htab->relplt->size;
7147 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7151 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7152 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7153 if (htab->got != NULL)
7155 unsigned char *p = htab->got->contents;
7158 p += htab->elf.hgot->root.u.def.value;
7159 if (htab->plt_type == PLT_OLD)
7160 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7164 val = sdyn->output_section->vma + sdyn->output_offset;
7165 bfd_put_32 (output_bfd, val, p);
7167 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7170 /* Fill in the first entry in the VxWorks procedure linkage table. */
7171 if (splt && splt->size > 0)
7173 /* Use the right PLT. */
7174 static const bfd_vma *plt_entry = NULL;
7175 plt_entry = info->shared ?
7176 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7181 (htab->elf.hgot->root.u.def.section->output_section->vma
7182 + htab->elf.hgot->root.u.def.section->output_offset
7183 + htab->elf.hgot->root.u.def.value);
7184 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7186 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7187 splt->contents + 0);
7188 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7189 splt->contents + 4);
7193 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7194 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7196 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7197 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7198 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7199 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7200 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7201 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7205 Elf_Internal_Rela rela;
7208 loc = htab->srelplt2->contents;
7210 /* Output the @ha relocation for the first instruction. */
7211 rela.r_offset = (htab->plt->output_section->vma
7212 + htab->plt->output_offset
7214 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7216 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7217 loc += sizeof (Elf32_External_Rela);
7219 /* Output the @l relocation for the second instruction. */
7220 rela.r_offset = (htab->plt->output_section->vma
7221 + htab->plt->output_offset
7223 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7225 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7226 loc += sizeof (Elf32_External_Rela);
7228 /* Fix up the remaining relocations. They may have the wrong
7229 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7230 in which symbols were output. */
7231 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7233 Elf_Internal_Rela rel;
7235 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7236 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7237 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7238 loc += sizeof (Elf32_External_Rela);
7240 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7241 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7242 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7243 loc += sizeof (Elf32_External_Rela);
7245 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7246 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7247 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7248 loc += sizeof (Elf32_External_Rela);
7253 if (htab->glink != NULL && htab->glink->contents != NULL)
7256 unsigned char *endp;
7261 * PIC glink code is the following:
7263 * # ith PLT code stub.
7264 * addis 11,30,(plt+(i-1)*4-got)@ha
7265 * lwz 11,(plt+(i-1)*4-got)@l(11)
7269 * # A table of branches, one for each plt entry.
7270 * # The idea is that the plt call stub loads ctr (and r11) with these
7271 * # addresses, so (r11 - res_0) gives the plt index * 4.
7272 * res_0: b PLTresolve
7273 * res_1: b PLTresolve
7275 * # Some number of entries towards the end can be nops
7281 * addis 11,11,(1f-res_0)@ha
7284 * 1: addi 11,11,(1b-res_0)@l
7287 * sub 11,11,12 # r11 = index * 4
7288 * addis 12,12,(got+4-1b)@ha
7289 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7290 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7293 * add 11,0,11 # r11 = index * 12 = reloc offset.
7296 static const unsigned int pic_plt_resolve[] =
7316 static const unsigned int plt_resolve[] =
7336 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7338 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7341 /* Build the branch table, one for each plt entry (less one),
7342 and perhaps some padding. */
7343 p = htab->glink->contents;
7344 p += htab->glink_pltresolve;
7345 endp = htab->glink->contents;
7346 endp += htab->glink->size - GLINK_PLTRESOLVE;
7347 while (p < endp - 8 * 4)
7349 bfd_put_32 (output_bfd, B + endp - p, p);
7354 bfd_put_32 (output_bfd, NOP, p);
7358 res0 = (htab->glink_pltresolve
7359 + htab->glink->output_section->vma
7360 + htab->glink->output_offset);
7362 /* Last comes the PLTresolve stub. */
7363 if (info->shared || info->pie)
7367 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7369 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7372 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7374 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7375 + htab->glink->output_section->vma
7376 + htab->glink->output_offset);
7378 bfd_put_32 (output_bfd,
7379 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7380 bfd_put_32 (output_bfd,
7381 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7382 bfd_put_32 (output_bfd,
7383 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7384 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7386 bfd_put_32 (output_bfd,
7387 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7388 bfd_put_32 (output_bfd,
7389 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7393 bfd_put_32 (output_bfd,
7394 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7395 bfd_put_32 (output_bfd,
7396 LWZ_12_12 + 4, p + 9*4);
7401 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7403 bfd_put_32 (output_bfd, plt_resolve[i], p);
7406 p -= 4 * ARRAY_SIZE (plt_resolve);
7408 bfd_put_32 (output_bfd,
7409 LIS_12 + PPC_HA (got + 4), p + 0*4);
7410 bfd_put_32 (output_bfd,
7411 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7412 bfd_put_32 (output_bfd,
7413 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7414 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7416 bfd_put_32 (output_bfd,
7417 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7418 bfd_put_32 (output_bfd,
7419 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7423 bfd_put_32 (output_bfd,
7424 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7425 bfd_put_32 (output_bfd,
7426 LWZ_12_12 + 4, p + 6*4);
7434 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7435 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7436 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7437 #define TARGET_BIG_NAME "elf32-powerpc"
7438 #define ELF_ARCH bfd_arch_powerpc
7439 #define ELF_MACHINE_CODE EM_PPC
7440 #ifdef __QNXTARGET__
7441 #define ELF_MAXPAGESIZE 0x1000
7443 #define ELF_MAXPAGESIZE 0x10000
7445 #define ELF_MINPAGESIZE 0x1000
7446 #define ELF_COMMONPAGESIZE 0x1000
7447 #define elf_info_to_howto ppc_elf_info_to_howto
7449 #ifdef EM_CYGNUS_POWERPC
7450 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7454 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7457 #define elf_backend_plt_not_loaded 1
7458 #define elf_backend_can_gc_sections 1
7459 #define elf_backend_can_refcount 1
7460 #define elf_backend_rela_normal 1
7462 #define bfd_elf32_mkobject ppc_elf_mkobject
7463 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7464 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7465 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7466 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7467 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7469 #define elf_backend_object_p ppc_elf_object_p
7470 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7471 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7472 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7473 #define elf_backend_relocate_section ppc_elf_relocate_section
7474 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7475 #define elf_backend_check_relocs ppc_elf_check_relocs
7476 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7477 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7478 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7479 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7480 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7481 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7482 #define elf_backend_fake_sections ppc_elf_fake_sections
7483 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7484 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7485 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7486 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7487 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7488 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7489 #define elf_backend_write_section ppc_elf_write_section
7490 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7491 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7492 #define elf_backend_action_discarded ppc_elf_action_discarded
7494 #include "elf32-target.h"
7496 /* VxWorks Target */
7498 #undef TARGET_LITTLE_SYM
7499 #undef TARGET_LITTLE_NAME
7501 #undef TARGET_BIG_SYM
7502 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7503 #undef TARGET_BIG_NAME
7504 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7506 /* VxWorks uses the elf default section flags for .plt. */
7507 static const struct bfd_elf_special_section *
7508 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7510 if (sec->name == NULL)
7513 if (strcmp (sec->name, ".plt") == 0)
7514 return _bfd_elf_get_sec_type_attr (abfd, sec);
7516 return ppc_elf_get_sec_type_attr (abfd, sec);
7519 /* Like ppc_elf_link_hash_table_create, but overrides
7520 appropriately for VxWorks. */
7521 static struct bfd_link_hash_table *
7522 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7524 struct bfd_link_hash_table *ret;
7526 ret = ppc_elf_link_hash_table_create (abfd);
7529 struct ppc_elf_link_hash_table *htab
7530 = (struct ppc_elf_link_hash_table *)ret;
7531 htab->is_vxworks = 1;
7532 htab->plt_type = PLT_VXWORKS;
7533 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7534 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7535 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7540 /* Tweak magic VxWorks symbols as they are loaded. */
7542 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7543 struct bfd_link_info *info,
7544 Elf_Internal_Sym *sym,
7545 const char **namep ATTRIBUTE_UNUSED,
7546 flagword *flagsp ATTRIBUTE_UNUSED,
7550 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7554 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7558 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7560 ppc_elf_final_write_processing(abfd, linker);
7561 elf_vxworks_final_write_processing(abfd, linker);
7564 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7566 #undef elf_backend_want_plt_sym
7567 #define elf_backend_want_plt_sym 1
7568 #undef elf_backend_want_got_plt
7569 #define elf_backend_want_got_plt 1
7570 #undef elf_backend_got_symbol_offset
7571 #define elf_backend_got_symbol_offset 0
7572 #undef elf_backend_plt_not_loaded
7573 #define elf_backend_plt_not_loaded 0
7574 #undef elf_backend_plt_readonly
7575 #define elf_backend_plt_readonly 1
7576 #undef elf_backend_got_header_size
7577 #define elf_backend_got_header_size 12
7579 #undef bfd_elf32_bfd_link_hash_table_create
7580 #define bfd_elf32_bfd_link_hash_table_create \
7581 ppc_elf_vxworks_link_hash_table_create
7582 #undef elf_backend_add_symbol_hook
7583 #define elf_backend_add_symbol_hook \
7584 ppc_elf_vxworks_add_symbol_hook
7585 #undef elf_backend_link_output_symbol_hook
7586 #define elf_backend_link_output_symbol_hook \
7587 elf_vxworks_link_output_symbol_hook
7588 #undef elf_backend_final_write_processing
7589 #define elf_backend_final_write_processing \
7590 ppc_elf_vxworks_final_write_processing
7591 #undef elf_backend_get_sec_type_attr
7592 #define elf_backend_get_sec_type_attr \
7593 ppc_elf_vxworks_get_sec_type_attr
7594 #undef elf_backend_emit_relocs
7595 #define elf_backend_emit_relocs \
7596 elf_vxworks_emit_relocs
7599 #define elf32_bed ppc_elf_vxworks_bed
7601 #include "elf32-target.h"
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