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 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1712 abfd->tdata.any = bfd_zalloc (abfd, amt);
1713 if (abfd->tdata.any == NULL)
1718 /* Fix bad default arch selected for a 32 bit input bfd when the
1719 default is 64 bit. */
1722 ppc_elf_object_p (bfd *abfd)
1724 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1726 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1728 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1730 /* Relies on arch after 64 bit default being 32 bit default. */
1731 abfd->arch_info = abfd->arch_info->next;
1732 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1738 /* Function to set whether a module needs the -mrelocatable bit set. */
1741 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1743 BFD_ASSERT (!elf_flags_init (abfd)
1744 || elf_elfheader (abfd)->e_flags == flags);
1746 elf_elfheader (abfd)->e_flags = flags;
1747 elf_flags_init (abfd) = TRUE;
1751 /* Support for core dump NOTE sections. */
1754 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1759 switch (note->descsz)
1764 case 268: /* Linux/PPC. */
1766 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1769 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1778 /* Make a ".reg/999" section. */
1779 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1780 size, note->descpos + offset);
1784 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1786 switch (note->descsz)
1791 case 128: /* Linux/PPC elf_prpsinfo. */
1792 elf_tdata (abfd)->core_program
1793 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1794 elf_tdata (abfd)->core_command
1795 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1798 /* Note that for some reason, a spurious space is tacked
1799 onto the end of the args in some (at least one anyway)
1800 implementations, so strip it off if it exists. */
1803 char *command = elf_tdata (abfd)->core_command;
1804 int n = strlen (command);
1806 if (0 < n && command[n - 1] == ' ')
1807 command[n - 1] = '\0';
1813 /* Return address for Ith PLT stub in section PLT, for relocation REL
1814 or (bfd_vma) -1 if it should not be included. */
1817 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1818 const asection *plt ATTRIBUTE_UNUSED,
1821 return rel->address;
1824 /* Handle a PowerPC specific section when reading an object file. This
1825 is called when bfd_section_from_shdr finds a section with an unknown
1829 ppc_elf_section_from_shdr (bfd *abfd,
1830 Elf_Internal_Shdr *hdr,
1837 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1840 newsect = hdr->bfd_section;
1841 flags = bfd_get_section_flags (abfd, newsect);
1842 if (hdr->sh_flags & SHF_EXCLUDE)
1843 flags |= SEC_EXCLUDE;
1845 if (hdr->sh_type == SHT_ORDERED)
1846 flags |= SEC_SORT_ENTRIES;
1848 bfd_set_section_flags (abfd, newsect, flags);
1852 /* Set up any other section flags and such that may be necessary. */
1855 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1856 Elf_Internal_Shdr *shdr,
1859 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1860 shdr->sh_flags |= SHF_EXCLUDE;
1862 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1863 shdr->sh_type = SHT_ORDERED;
1868 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1869 need to bump up the number of section headers. */
1872 ppc_elf_additional_program_headers (bfd *abfd)
1877 s = bfd_get_section_by_name (abfd, ".sbss2");
1878 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1881 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1882 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1888 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1889 .PPC.EMB.sbss0 a normal section, and not a bss section so
1890 that the linker doesn't crater when trying to make more than
1893 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1895 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1896 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1897 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1898 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1899 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1900 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1901 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1902 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1903 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1904 { NULL, 0, 0, 0, 0 }
1907 /* This is what we want for new plt/got. */
1908 static struct bfd_elf_special_section ppc_alt_plt =
1909 { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC };
1911 static const struct bfd_elf_special_section *
1912 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1914 const struct bfd_elf_special_section *ssect;
1916 /* See if this is one of the special sections. */
1917 if (sec->name == NULL)
1920 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1924 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1925 ssect = &ppc_alt_plt;
1929 return _bfd_elf_get_sec_type_attr (abfd, sec);
1932 /* Very simple linked list structure for recording apuinfo values. */
1933 typedef struct apuinfo_list
1935 struct apuinfo_list *next;
1936 unsigned long value;
1940 static apuinfo_list *head;
1944 apuinfo_list_init (void)
1950 apuinfo_list_add (unsigned long value)
1952 apuinfo_list *entry = head;
1954 while (entry != NULL)
1956 if (entry->value == value)
1958 entry = entry->next;
1961 entry = bfd_malloc (sizeof (* entry));
1965 entry->value = value;
1971 apuinfo_list_length (void)
1973 apuinfo_list *entry;
1974 unsigned long count;
1976 for (entry = head, count = 0;
1978 entry = entry->next)
1984 static inline unsigned long
1985 apuinfo_list_element (unsigned long number)
1987 apuinfo_list * entry;
1991 entry = entry->next)
1994 return entry ? entry->value : 0;
1998 apuinfo_list_finish (void)
2000 apuinfo_list *entry;
2002 for (entry = head; entry;)
2004 apuinfo_list *next = entry->next;
2012 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2013 #define APUINFO_LABEL "APUinfo"
2015 /* Scan the input BFDs and create a linked list of
2016 the APUinfo values that will need to be emitted. */
2019 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2024 unsigned num_input_sections;
2025 bfd_size_type output_section_size;
2027 unsigned num_entries;
2028 unsigned long offset;
2029 unsigned long length;
2030 const char *error_message = NULL;
2032 if (link_info == NULL)
2035 /* Scan the input bfds, looking for apuinfo sections. */
2036 num_input_sections = 0;
2037 output_section_size = 0;
2039 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2041 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2044 ++ num_input_sections;
2045 output_section_size += asec->size;
2049 /* We need at least one input sections
2050 in order to make merging worthwhile. */
2051 if (num_input_sections < 1)
2054 /* Just make sure that the output section exists as well. */
2055 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2059 /* Allocate a buffer for the contents of the input sections. */
2060 buffer = bfd_malloc (output_section_size);
2065 apuinfo_list_init ();
2067 /* Read in the input sections contents. */
2068 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2070 unsigned long datum;
2073 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2077 length = asec->size;
2080 error_message = _("corrupt or empty %s section in %B");
2084 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2085 || (bfd_bread (buffer + offset, length, ibfd) != length))
2087 error_message = _("unable to read in %s section from %B");
2091 /* Process the contents of the section. */
2092 ptr = buffer + offset;
2093 error_message = _("corrupt %s section in %B");
2095 /* Verify the contents of the header. Note - we have to
2096 extract the values this way in order to allow for a
2097 host whose endian-ness is different from the target. */
2098 datum = bfd_get_32 (ibfd, ptr);
2099 if (datum != sizeof APUINFO_LABEL)
2102 datum = bfd_get_32 (ibfd, ptr + 8);
2106 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2109 /* Get the number of bytes used for apuinfo entries. */
2110 datum = bfd_get_32 (ibfd, ptr + 4);
2111 if (datum + 20 != length)
2114 /* Make sure that we do not run off the end of the section. */
2115 if (offset + length > output_section_size)
2118 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2119 for (i = 0; i < datum; i += 4)
2120 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2122 /* Update the offset. */
2126 error_message = NULL;
2128 /* Compute the size of the output section. */
2129 num_entries = apuinfo_list_length ();
2130 output_section_size = 20 + num_entries * 4;
2132 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2134 if (! bfd_set_section_size (abfd, asec, output_section_size))
2136 error_message = _("warning: unable to set size of %s section in %B");
2142 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2145 /* Prevent the output section from accumulating the input sections'
2146 contents. We have already stored this in our linked list structure. */
2149 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2151 bfd_byte *contents ATTRIBUTE_UNUSED)
2153 return (apuinfo_list_length ()
2154 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2157 /* Finally we can generate the output section. */
2160 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2165 unsigned num_entries;
2166 bfd_size_type length;
2168 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2172 if (apuinfo_list_length () == 0)
2175 length = asec->size;
2179 buffer = bfd_malloc (length);
2182 (*_bfd_error_handler)
2183 (_("failed to allocate space for new APUinfo section."));
2187 /* Create the apuinfo header. */
2188 num_entries = apuinfo_list_length ();
2189 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2190 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2191 bfd_put_32 (abfd, 0x2, buffer + 8);
2192 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2195 for (i = 0; i < num_entries; i++)
2197 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2201 if (length != asec->size)
2202 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2204 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2205 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2209 apuinfo_list_finish ();
2212 /* The following functions are specific to the ELF linker, while
2213 functions above are used generally. They appear in this file more
2214 or less in the order in which they are called. eg.
2215 ppc_elf_check_relocs is called early in the link process,
2216 ppc_elf_finish_dynamic_sections is one of the last functions
2219 /* The PPC linker needs to keep track of the number of relocs that it
2220 decides to copy as dynamic relocs in check_relocs for each symbol.
2221 This is so that it can later discard them if they are found to be
2222 unnecessary. We store the information in a field extending the
2223 regular ELF linker hash table. */
2225 struct ppc_elf_dyn_relocs
2227 struct ppc_elf_dyn_relocs *next;
2229 /* The input section of the reloc. */
2232 /* Total number of relocs copied for the input section. */
2233 bfd_size_type count;
2235 /* Number of pc-relative relocs copied for the input section. */
2236 bfd_size_type pc_count;
2239 /* Track PLT entries needed for a given symbol. We might need more
2240 than one glink entry per symbol. */
2243 struct plt_entry *next;
2245 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2246 This field stores the offset into .got2 used to initialise the
2247 GOT pointer reg. It will always be at least 32768 (and for
2248 current gcc this is the only offset used). */
2251 /* The .got2 section. */
2254 /* PLT refcount or offset. */
2257 bfd_signed_vma refcount;
2261 /* .glink stub offset. */
2262 bfd_vma glink_offset;
2265 /* Of those relocs that might be copied as dynamic relocs, this macro
2266 selects those that must be copied when linking a shared library,
2267 even when the symbol is local. */
2269 #define MUST_BE_DYN_RELOC(RTYPE) \
2270 ((RTYPE) != R_PPC_REL24 \
2271 && (RTYPE) != R_PPC_REL14 \
2272 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2273 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2274 && (RTYPE) != R_PPC_REL32)
2276 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2277 copying dynamic variables from a shared lib into an app's dynbss
2278 section, and instead use a dynamic relocation to point into the
2280 #define ELIMINATE_COPY_RELOCS 1
2282 /* PPC ELF linker hash entry. */
2284 struct ppc_elf_link_hash_entry
2286 struct elf_link_hash_entry elf;
2288 /* If this symbol is used in the linker created sections, the processor
2289 specific backend uses this field to map the field into the offset
2290 from the beginning of the section. */
2291 elf_linker_section_pointers_t *linker_section_pointer;
2293 /* Track dynamic relocs copied for this symbol. */
2294 struct ppc_elf_dyn_relocs *dyn_relocs;
2296 /* Contexts in which symbol is used in the GOT (or TOC).
2297 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2298 corresponding relocs are encountered during check_relocs.
2299 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2300 indicate the corresponding GOT entry type is not needed. */
2301 #define TLS_GD 1 /* GD reloc. */
2302 #define TLS_LD 2 /* LD reloc. */
2303 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2304 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2305 #define TLS_TLS 16 /* Any TLS reloc. */
2306 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2309 /* Nonzero if we have seen a small data relocation referring to this
2311 unsigned char has_sda_refs;
2314 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2316 enum ppc_elf_plt_type {
2323 /* PPC ELF linker hash table. */
2325 struct ppc_elf_link_hash_table
2327 struct elf_link_hash_table elf;
2329 /* Short-cuts to get to dynamic linker sections. */
2339 elf_linker_section_t sdata[2];
2342 /* Shortcut to .__tls_get_addr. */
2343 struct elf_link_hash_entry *tls_get_addr;
2345 /* TLS local dynamic got entry handling. */
2347 bfd_signed_vma refcount;
2351 /* Offset of PltResolve function in glink. */
2352 bfd_vma glink_pltresolve;
2354 /* Size of reserved GOT entries. */
2355 unsigned int got_header_size;
2356 /* Non-zero if allocating the header left a gap. */
2357 unsigned int got_gap;
2359 /* The type of PLT we have chosen to use. */
2360 enum ppc_elf_plt_type plt_type;
2362 /* Whether we can use the new PLT layout. */
2363 unsigned int can_use_new_plt:1;
2365 /* Set if we should emit symbols for stubs. */
2366 unsigned int emit_stub_syms:1;
2368 /* Small local sym to section mapping cache. */
2369 struct sym_sec_cache sym_sec;
2371 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2374 /* The .got.plt section (VxWorks only)*/
2377 /* True if the target system is VxWorks. */
2380 /* The size of PLT entries. */
2382 /* The distance between adjacent PLT slots. */
2384 /* The size of the first PLT entry. */
2385 int plt_initial_entry_size;
2388 /* Get the PPC ELF linker hash table from a link_info structure. */
2390 #define ppc_elf_hash_table(p) \
2391 ((struct ppc_elf_link_hash_table *) (p)->hash)
2393 /* Create an entry in a PPC ELF linker hash table. */
2395 static struct bfd_hash_entry *
2396 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2397 struct bfd_hash_table *table,
2400 /* Allocate the structure if it has not already been allocated by a
2404 entry = bfd_hash_allocate (table,
2405 sizeof (struct ppc_elf_link_hash_entry));
2410 /* Call the allocation method of the superclass. */
2411 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2414 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2415 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2416 ppc_elf_hash_entry (entry)->tls_mask = 0;
2422 /* Create a PPC ELF linker hash table. */
2424 static struct bfd_link_hash_table *
2425 ppc_elf_link_hash_table_create (bfd *abfd)
2427 struct ppc_elf_link_hash_table *ret;
2429 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2433 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2434 ppc_elf_link_hash_newfunc,
2435 sizeof (struct ppc_elf_link_hash_entry)))
2441 ret->elf.init_plt_refcount.refcount = 0;
2442 ret->elf.init_plt_refcount.glist = NULL;
2443 ret->elf.init_plt_offset.offset = 0;
2444 ret->elf.init_plt_offset.glist = NULL;
2446 ret->sdata[0].name = ".sdata";
2447 ret->sdata[0].sym_name = "_SDA_BASE_";
2448 ret->sdata[0].bss_name = ".sbss";
2450 ret->sdata[1].name = ".sdata2";
2451 ret->sdata[1].sym_name = "_SDA2_BASE_";
2452 ret->sdata[1].bss_name = ".sbss2";
2454 ret->plt_entry_size = 12;
2455 ret->plt_slot_size = 8;
2456 ret->plt_initial_entry_size = 72;
2458 ret->is_vxworks = 0;
2460 return &ret->elf.root;
2463 /* Create .got and the related sections. */
2466 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2468 struct ppc_elf_link_hash_table *htab;
2472 if (!_bfd_elf_create_got_section (abfd, info))
2475 htab = ppc_elf_hash_table (info);
2476 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2480 if (htab->is_vxworks)
2482 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2488 /* The powerpc .got has a blrl instruction in it. Mark it
2490 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2491 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2492 if (!bfd_set_section_flags (abfd, s, flags))
2496 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2497 | SEC_LINKER_CREATED | SEC_READONLY);
2498 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2500 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2506 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2507 to output sections (just like _bfd_elf_create_dynamic_sections has
2508 to create .dynbss and .rela.bss). */
2511 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2513 struct ppc_elf_link_hash_table *htab;
2517 htab = ppc_elf_hash_table (info);
2519 if (htab->got == NULL
2520 && !ppc_elf_create_got (abfd, info))
2523 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2526 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2527 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2529 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2532 || !bfd_set_section_alignment (abfd, s, 4))
2535 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2536 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2537 SEC_ALLOC | SEC_LINKER_CREATED);
2544 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2545 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2548 || ! bfd_set_section_alignment (abfd, s, 2))
2552 if (htab->is_vxworks
2553 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2556 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2557 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2561 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2562 if (htab->plt_type == PLT_VXWORKS)
2563 /* The VxWorks PLT is a loaded section with contents. */
2564 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2565 return bfd_set_section_flags (abfd, s, flags);
2568 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2571 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2572 struct elf_link_hash_entry *dir,
2573 struct elf_link_hash_entry *ind)
2575 struct ppc_elf_link_hash_entry *edir, *eind;
2577 edir = (struct ppc_elf_link_hash_entry *) dir;
2578 eind = (struct ppc_elf_link_hash_entry *) ind;
2580 if (eind->dyn_relocs != NULL)
2582 if (edir->dyn_relocs != NULL)
2584 struct ppc_elf_dyn_relocs **pp;
2585 struct ppc_elf_dyn_relocs *p;
2587 /* Add reloc counts against the indirect sym to the direct sym
2588 list. Merge any entries against the same section. */
2589 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2591 struct ppc_elf_dyn_relocs *q;
2593 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2594 if (q->sec == p->sec)
2596 q->pc_count += p->pc_count;
2597 q->count += p->count;
2604 *pp = edir->dyn_relocs;
2607 edir->dyn_relocs = eind->dyn_relocs;
2608 eind->dyn_relocs = NULL;
2611 edir->tls_mask |= eind->tls_mask;
2612 edir->has_sda_refs |= eind->has_sda_refs;
2614 /* If called to transfer flags for a weakdef during processing
2615 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2616 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2617 if (!(ELIMINATE_COPY_RELOCS
2618 && eind->elf.root.type != bfd_link_hash_indirect
2619 && edir->elf.dynamic_adjusted))
2620 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2622 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2623 edir->elf.ref_regular |= eind->elf.ref_regular;
2624 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2625 edir->elf.needs_plt |= eind->elf.needs_plt;
2627 /* If we were called to copy over info for a weak sym, that's all. */
2628 if (eind->elf.root.type != bfd_link_hash_indirect)
2631 /* Copy over the GOT refcount entries that we may have already seen to
2632 the symbol which just became indirect. */
2633 edir->elf.got.refcount += eind->elf.got.refcount;
2634 eind->elf.got.refcount = 0;
2636 /* And plt entries. */
2637 if (eind->elf.plt.plist != NULL)
2639 if (edir->elf.plt.plist != NULL)
2641 struct plt_entry **entp;
2642 struct plt_entry *ent;
2644 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2646 struct plt_entry *dent;
2648 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2649 if (dent->sec == ent->sec && dent->addend == ent->addend)
2651 dent->plt.refcount += ent->plt.refcount;
2658 *entp = edir->elf.plt.plist;
2661 edir->elf.plt.plist = eind->elf.plt.plist;
2662 eind->elf.plt.plist = NULL;
2665 if (eind->elf.dynindx != -1)
2667 if (edir->elf.dynindx != -1)
2668 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2669 edir->elf.dynstr_index);
2670 edir->elf.dynindx = eind->elf.dynindx;
2671 edir->elf.dynstr_index = eind->elf.dynstr_index;
2672 eind->elf.dynindx = -1;
2673 eind->elf.dynstr_index = 0;
2677 /* Return 1 if target is one of ours. */
2680 is_ppc_elf_target (const struct bfd_target *targ)
2682 extern const bfd_target bfd_elf32_powerpc_vec;
2683 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
2684 extern const bfd_target bfd_elf32_powerpcle_vec;
2686 return (targ == &bfd_elf32_powerpc_vec
2687 || targ == &bfd_elf32_powerpc_vxworks_vec
2688 || targ == &bfd_elf32_powerpcle_vec);
2691 /* Hook called by the linker routine which adds symbols from an object
2692 file. We use it to put .comm items in .sbss, and not .bss. */
2695 ppc_elf_add_symbol_hook (bfd *abfd,
2696 struct bfd_link_info *info,
2697 Elf_Internal_Sym *sym,
2698 const char **namep ATTRIBUTE_UNUSED,
2699 flagword *flagsp ATTRIBUTE_UNUSED,
2703 if (sym->st_shndx == SHN_COMMON
2704 && !info->relocatable
2705 && sym->st_size <= elf_gp_size (abfd)
2706 && is_ppc_elf_target (info->hash->creator))
2708 /* Common symbols less than or equal to -G nn bytes are automatically
2710 struct ppc_elf_link_hash_table *htab;
2712 htab = ppc_elf_hash_table (info);
2713 if (htab->sbss == NULL)
2715 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2717 if (!htab->elf.dynobj)
2718 htab->elf.dynobj = abfd;
2720 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2723 if (htab->sbss == NULL)
2728 *valp = sym->st_size;
2735 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2736 elf_linker_section_t *lsect)
2738 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2740 if (lsect->sym == NULL)
2742 if (lsect->sym->root.type == bfd_link_hash_new)
2743 lsect->sym->non_elf = 0;
2744 lsect->sym->ref_regular = 1;
2748 /* Create a special linker section. */
2751 ppc_elf_create_linker_section (bfd *abfd,
2752 struct bfd_link_info *info,
2754 elf_linker_section_t *lsect)
2756 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2759 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2760 | SEC_LINKER_CREATED);
2762 /* Record the first bfd that needs the special sections. */
2763 if (!htab->elf.dynobj)
2764 htab->elf.dynobj = abfd;
2766 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2770 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2774 return create_sdata_sym (htab, lsect);
2777 /* Find a linker generated pointer with a given addend and type. */
2779 static elf_linker_section_pointers_t *
2780 elf_find_pointer_linker_section
2781 (elf_linker_section_pointers_t *linker_pointers,
2783 elf_linker_section_t *lsect)
2785 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2786 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2787 return linker_pointers;
2792 /* Allocate a pointer to live in a linker created section. */
2795 elf_create_pointer_linker_section (bfd *abfd,
2796 elf_linker_section_t *lsect,
2797 struct elf_link_hash_entry *h,
2798 const Elf_Internal_Rela *rel)
2800 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2801 elf_linker_section_pointers_t *linker_section_ptr;
2802 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2805 BFD_ASSERT (lsect != NULL);
2807 /* Is this a global symbol? */
2810 struct ppc_elf_link_hash_entry *eh;
2812 /* Has this symbol already been allocated? If so, our work is done. */
2813 eh = (struct ppc_elf_link_hash_entry *) h;
2814 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2819 ptr_linker_section_ptr = &eh->linker_section_pointer;
2823 /* Allocation of a pointer to a local symbol. */
2824 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2826 /* Allocate a table to hold the local symbols if first time. */
2829 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2832 amt *= sizeof (elf_linker_section_pointers_t *);
2833 ptr = bfd_zalloc (abfd, amt);
2838 elf_local_ptr_offsets (abfd) = ptr;
2841 /* Has this symbol already been allocated? If so, our work is done. */
2842 if (elf_find_pointer_linker_section (ptr[r_symndx],
2847 ptr_linker_section_ptr = &ptr[r_symndx];
2850 /* Allocate space for a pointer in the linker section, and allocate
2851 a new pointer record from internal memory. */
2852 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2853 amt = sizeof (elf_linker_section_pointers_t);
2854 linker_section_ptr = bfd_alloc (abfd, amt);
2856 if (!linker_section_ptr)
2859 linker_section_ptr->next = *ptr_linker_section_ptr;
2860 linker_section_ptr->addend = rel->r_addend;
2861 linker_section_ptr->lsect = lsect;
2862 *ptr_linker_section_ptr = linker_section_ptr;
2864 linker_section_ptr->offset = lsect->section->size;
2865 lsect->section->size += 4;
2869 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2870 lsect->name, (long) linker_section_ptr->offset,
2871 (long) lsect->section->size);
2878 update_local_sym_info (bfd *abfd,
2879 Elf_Internal_Shdr *symtab_hdr,
2880 unsigned long r_symndx,
2883 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2884 char *local_got_tls_masks;
2886 if (local_got_refcounts == NULL)
2888 bfd_size_type size = symtab_hdr->sh_info;
2890 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2891 local_got_refcounts = bfd_zalloc (abfd, size);
2892 if (local_got_refcounts == NULL)
2894 elf_local_got_refcounts (abfd) = local_got_refcounts;
2897 local_got_refcounts[r_symndx] += 1;
2898 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2899 local_got_tls_masks[r_symndx] |= tls_type;
2904 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2905 asection *sec, bfd_vma addend)
2907 struct plt_entry *ent;
2911 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2912 if (ent->sec == sec && ent->addend == addend)
2916 bfd_size_type amt = sizeof (*ent);
2917 ent = bfd_alloc (abfd, amt);
2920 ent->next = h->plt.plist;
2922 ent->addend = addend;
2923 ent->plt.refcount = 0;
2926 ent->plt.refcount += 1;
2930 static struct plt_entry *
2931 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2933 struct plt_entry *ent;
2937 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2938 if (ent->sec == sec && ent->addend == addend)
2944 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2946 (*_bfd_error_handler)
2947 (_("%B: relocation %s cannot be used when making a shared object"),
2949 ppc_elf_howto_table[r_type]->name);
2950 bfd_set_error (bfd_error_bad_value);
2953 /* Look through the relocs for a section during the first phase, and
2954 allocate space in the global offset table or procedure linkage
2958 ppc_elf_check_relocs (bfd *abfd,
2959 struct bfd_link_info *info,
2961 const Elf_Internal_Rela *relocs)
2963 struct ppc_elf_link_hash_table *htab;
2964 Elf_Internal_Shdr *symtab_hdr;
2965 struct elf_link_hash_entry **sym_hashes;
2966 const Elf_Internal_Rela *rel;
2967 const Elf_Internal_Rela *rel_end;
2968 asection *got2, *sreloc;
2970 if (info->relocatable)
2973 /* Don't do anything special with non-loaded, non-alloced sections.
2974 In particular, any relocs in such sections should not affect GOT
2975 and PLT reference counting (ie. we don't allow them to create GOT
2976 or PLT entries), there's no possibility or desire to optimize TLS
2977 relocs, and there's not much point in propagating relocs to shared
2978 libs that the dynamic linker won't relocate. */
2979 if ((sec->flags & SEC_ALLOC) == 0)
2983 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2987 /* Initialize howto table if not already done. */
2988 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2989 ppc_elf_howto_init ();
2991 htab = ppc_elf_hash_table (info);
2992 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2993 sym_hashes = elf_sym_hashes (abfd);
2994 got2 = bfd_get_section_by_name (abfd, ".got2");
2997 rel_end = relocs + sec->reloc_count;
2998 for (rel = relocs; rel < rel_end; rel++)
3000 unsigned long r_symndx;
3001 enum elf_ppc_reloc_type r_type;
3002 struct elf_link_hash_entry *h;
3005 r_symndx = ELF32_R_SYM (rel->r_info);
3006 if (r_symndx < symtab_hdr->sh_info)
3010 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3011 while (h->root.type == bfd_link_hash_indirect
3012 || h->root.type == bfd_link_hash_warning)
3013 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3016 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3017 This shows up in particular in an R_PPC_ADDR32 in the eabi
3020 && htab->got == NULL
3021 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3023 if (htab->elf.dynobj == NULL)
3024 htab->elf.dynobj = abfd;
3025 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3027 BFD_ASSERT (h == htab->elf.hgot);
3030 r_type = ELF32_R_TYPE (rel->r_info);
3033 case R_PPC_GOT_TLSLD16:
3034 case R_PPC_GOT_TLSLD16_LO:
3035 case R_PPC_GOT_TLSLD16_HI:
3036 case R_PPC_GOT_TLSLD16_HA:
3037 htab->tlsld_got.refcount += 1;
3038 tls_type = TLS_TLS | TLS_LD;
3041 case R_PPC_GOT_TLSGD16:
3042 case R_PPC_GOT_TLSGD16_LO:
3043 case R_PPC_GOT_TLSGD16_HI:
3044 case R_PPC_GOT_TLSGD16_HA:
3045 tls_type = TLS_TLS | TLS_GD;
3048 case R_PPC_GOT_TPREL16:
3049 case R_PPC_GOT_TPREL16_LO:
3050 case R_PPC_GOT_TPREL16_HI:
3051 case R_PPC_GOT_TPREL16_HA:
3053 info->flags |= DF_STATIC_TLS;
3054 tls_type = TLS_TLS | TLS_TPREL;
3057 case R_PPC_GOT_DTPREL16:
3058 case R_PPC_GOT_DTPREL16_LO:
3059 case R_PPC_GOT_DTPREL16_HI:
3060 case R_PPC_GOT_DTPREL16_HA:
3061 tls_type = TLS_TLS | TLS_DTPREL;
3063 sec->has_tls_reloc = 1;
3066 /* GOT16 relocations */
3068 case R_PPC_GOT16_LO:
3069 case R_PPC_GOT16_HI:
3070 case R_PPC_GOT16_HA:
3071 /* This symbol requires a global offset table entry. */
3072 if (htab->got == NULL)
3074 if (htab->elf.dynobj == NULL)
3075 htab->elf.dynobj = abfd;
3076 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3081 h->got.refcount += 1;
3082 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3085 /* This is a global offset table entry for a local symbol. */
3086 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3090 /* Indirect .sdata relocation. */
3091 case R_PPC_EMB_SDAI16:
3094 bad_shared_reloc (abfd, r_type);
3097 if (htab->sdata[0].section == NULL
3098 && !ppc_elf_create_linker_section (abfd, info, 0,
3101 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3106 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3107 h->non_got_ref = TRUE;
3111 /* Indirect .sdata2 relocation. */
3112 case R_PPC_EMB_SDA2I16:
3115 bad_shared_reloc (abfd, r_type);
3118 if (htab->sdata[1].section == NULL
3119 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3122 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3127 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3128 h->non_got_ref = TRUE;
3132 case R_PPC_SDAREL16:
3135 bad_shared_reloc (abfd, r_type);
3138 if (htab->sdata[0].sym == NULL
3139 && !create_sdata_sym (htab, &htab->sdata[0]))
3143 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3144 h->non_got_ref = TRUE;
3148 case R_PPC_EMB_SDA2REL:
3151 bad_shared_reloc (abfd, r_type);
3154 if (htab->sdata[1].sym == NULL
3155 && !create_sdata_sym (htab, &htab->sdata[1]))
3159 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3160 h->non_got_ref = TRUE;
3164 case R_PPC_EMB_SDA21:
3165 case R_PPC_EMB_RELSDA:
3168 bad_shared_reloc (abfd, r_type);
3171 if (htab->sdata[0].sym == NULL
3172 && !create_sdata_sym (htab, &htab->sdata[0]))
3174 if (htab->sdata[1].sym == NULL
3175 && !create_sdata_sym (htab, &htab->sdata[1]))
3179 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3180 h->non_got_ref = TRUE;
3184 case R_PPC_EMB_NADDR32:
3185 case R_PPC_EMB_NADDR16:
3186 case R_PPC_EMB_NADDR16_LO:
3187 case R_PPC_EMB_NADDR16_HI:
3188 case R_PPC_EMB_NADDR16_HA:
3191 bad_shared_reloc (abfd, r_type);
3195 h->non_got_ref = TRUE;
3199 case R_PPC_PLTREL24:
3200 case R_PPC_PLTREL32:
3201 case R_PPC_PLT16_LO:
3202 case R_PPC_PLT16_HI:
3203 case R_PPC_PLT16_HA:
3205 fprintf (stderr, "Reloc requires a PLT entry\n");
3207 /* This symbol requires a procedure linkage table entry. We
3208 actually build the entry in finish_dynamic_symbol,
3209 because this might be a case of linking PIC code without
3210 linking in any dynamic objects, in which case we don't
3211 need to generate a procedure linkage table after all. */
3215 /* It does not make sense to have a procedure linkage
3216 table entry for a local symbol. */
3217 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3221 (long) rel->r_offset,
3222 ppc_elf_howto_table[r_type]->name);
3223 bfd_set_error (bfd_error_bad_value);
3228 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3231 if (!update_plt_info (abfd, h, got2, addend))
3236 /* The following relocations don't need to propagate the
3237 relocation if linking a shared object since they are
3238 section relative. */
3240 case R_PPC_SECTOFF_LO:
3241 case R_PPC_SECTOFF_HI:
3242 case R_PPC_SECTOFF_HA:
3243 case R_PPC_DTPREL16:
3244 case R_PPC_DTPREL16_LO:
3245 case R_PPC_DTPREL16_HI:
3246 case R_PPC_DTPREL16_HA:
3251 case R_PPC_REL16_LO:
3252 case R_PPC_REL16_HI:
3253 case R_PPC_REL16_HA:
3254 htab->can_use_new_plt = 1;
3257 /* These are just markers. */
3259 case R_PPC_EMB_MRKREF:
3264 /* These should only appear in dynamic objects. */
3266 case R_PPC_GLOB_DAT:
3267 case R_PPC_JMP_SLOT:
3268 case R_PPC_RELATIVE:
3271 /* These aren't handled yet. We'll report an error later. */
3273 case R_PPC_EMB_RELSEC16:
3274 case R_PPC_EMB_RELST_LO:
3275 case R_PPC_EMB_RELST_HI:
3276 case R_PPC_EMB_RELST_HA:
3277 case R_PPC_EMB_BIT_FLD:
3280 /* This refers only to functions defined in the shared library. */
3281 case R_PPC_LOCAL24PC:
3282 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3283 htab->plt_type = PLT_OLD;
3286 /* This relocation describes the C++ object vtable hierarchy.
3287 Reconstruct it for later use during GC. */
3288 case R_PPC_GNU_VTINHERIT:
3289 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3293 /* This relocation describes which C++ vtable entries are actually
3294 used. Record for later use during GC. */
3295 case R_PPC_GNU_VTENTRY:
3296 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3300 /* We shouldn't really be seeing these. */
3303 info->flags |= DF_STATIC_TLS;
3307 case R_PPC_DTPMOD32:
3308 case R_PPC_DTPREL32:
3312 case R_PPC_TPREL16_LO:
3313 case R_PPC_TPREL16_HI:
3314 case R_PPC_TPREL16_HA:
3316 info->flags |= DF_STATIC_TLS;
3322 && (sec->flags & SEC_CODE) != 0
3323 && (info->shared || info->pie)
3324 && htab->plt_type == PLT_UNSET)
3326 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3327 the start of a function, which assembles to a REL32
3328 reference to .got2. If we detect one of these, then
3329 force the old PLT layout because the linker cannot
3330 reliably deduce the GOT pointer value needed for
3334 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3337 htab->plt_type = PLT_OLD;
3339 if (h == NULL || h == htab->elf.hgot)
3345 case R_PPC_REL14_BRTAKEN:
3346 case R_PPC_REL14_BRNTAKEN:
3349 if (h == htab->elf.hgot)
3351 if (htab->plt_type == PLT_UNSET)
3352 htab->plt_type = PLT_OLD;
3360 case R_PPC_ADDR16_LO:
3361 case R_PPC_ADDR16_HI:
3362 case R_PPC_ADDR16_HA:
3364 case R_PPC_ADDR14_BRTAKEN:
3365 case R_PPC_ADDR14_BRNTAKEN:
3369 if (h != NULL && !info->shared)
3371 /* We may need a plt entry if the symbol turns out to be
3372 a function defined in a dynamic object. */
3373 if (!update_plt_info (abfd, h, NULL, 0))
3376 /* We may need a copy reloc too. */
3381 /* If we are creating a shared library, and this is a reloc
3382 against a global symbol, or a non PC relative reloc
3383 against a local symbol, then we need to copy the reloc
3384 into the shared library. However, if we are linking with
3385 -Bsymbolic, we do not need to copy a reloc against a
3386 global symbol which is defined in an object we are
3387 including in the link (i.e., DEF_REGULAR is set). At
3388 this point we have not seen all the input files, so it is
3389 possible that DEF_REGULAR is not set now but will be set
3390 later (it is never cleared). In case of a weak definition,
3391 DEF_REGULAR may be cleared later by a strong definition in
3392 a shared library. We account for that possibility below by
3393 storing information in the dyn_relocs field of the hash
3394 table entry. A similar situation occurs when creating
3395 shared libraries and symbol visibility changes render the
3398 If on the other hand, we are creating an executable, we
3399 may need to keep relocations for symbols satisfied by a
3400 dynamic library if we manage to avoid copy relocs for the
3403 && (MUST_BE_DYN_RELOC (r_type)
3405 && (! info->symbolic
3406 || h->root.type == bfd_link_hash_defweak
3407 || !h->def_regular))))
3408 || (ELIMINATE_COPY_RELOCS
3411 && (h->root.type == bfd_link_hash_defweak
3412 || !h->def_regular)))
3414 struct ppc_elf_dyn_relocs *p;
3415 struct ppc_elf_dyn_relocs **head;
3419 "ppc_elf_check_relocs needs to "
3420 "create relocation for %s\n",
3421 (h && h->root.root.string
3422 ? h->root.root.string : "<unknown>"));
3428 name = (bfd_elf_string_from_elf_section
3430 elf_elfheader (abfd)->e_shstrndx,
3431 elf_section_data (sec)->rel_hdr.sh_name));
3435 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3436 && strcmp (bfd_get_section_name (abfd, sec),
3439 if (htab->elf.dynobj == NULL)
3440 htab->elf.dynobj = abfd;
3441 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3446 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3447 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3448 | SEC_ALLOC | SEC_LOAD);
3449 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3453 || ! bfd_set_section_alignment (htab->elf.dynobj,
3457 elf_section_data (sec)->sreloc = sreloc;
3460 /* If this is a global symbol, we count the number of
3461 relocations we need for this symbol. */
3464 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3468 /* Track dynamic relocs needed for local syms too.
3469 We really need local syms available to do this
3475 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3480 vpp = &elf_section_data (s)->local_dynrel;
3481 head = (struct ppc_elf_dyn_relocs **) vpp;
3485 if (p == NULL || p->sec != sec)
3487 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3498 if (!MUST_BE_DYN_RELOC (r_type))
3509 /* Merge backend specific data from an object file to the output
3510 object file when linking. */
3513 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3519 if (!is_ppc_elf_target (ibfd->xvec)
3520 || !is_ppc_elf_target (obfd->xvec))
3523 /* Check if we have the same endianess. */
3524 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3527 new_flags = elf_elfheader (ibfd)->e_flags;
3528 old_flags = elf_elfheader (obfd)->e_flags;
3529 if (!elf_flags_init (obfd))
3531 /* First call, no flags set. */
3532 elf_flags_init (obfd) = TRUE;
3533 elf_elfheader (obfd)->e_flags = new_flags;
3536 /* Compatible flags are ok. */
3537 else if (new_flags == old_flags)
3540 /* Incompatible flags. */
3543 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3544 to be linked with either. */
3546 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3547 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3550 (*_bfd_error_handler)
3551 (_("%B: compiled with -mrelocatable and linked with "
3552 "modules compiled normally"), ibfd);
3554 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3555 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3558 (*_bfd_error_handler)
3559 (_("%B: compiled normally and linked with "
3560 "modules compiled with -mrelocatable"), ibfd);
3563 /* The output is -mrelocatable-lib iff both the input files are. */
3564 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3565 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3567 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3568 but each input file is either -mrelocatable or -mrelocatable-lib. */
3569 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3570 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3571 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3572 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3574 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3575 any module uses it. */
3576 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3578 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3579 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3581 /* Warn about any other mismatches. */
3582 if (new_flags != old_flags)
3585 (*_bfd_error_handler)
3586 (_("%B: uses different e_flags (0x%lx) fields "
3587 "than previous modules (0x%lx)"),
3588 ibfd, (long) new_flags, (long) old_flags);
3593 bfd_set_error (bfd_error_bad_value);
3601 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3602 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3604 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3605 struct bfd_link_info *info,
3609 struct ppc_elf_link_hash_table *htab;
3612 htab = ppc_elf_hash_table (info);
3614 if (htab->plt_type == PLT_UNSET)
3615 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3616 ? PLT_OLD : PLT_NEW);
3618 htab->emit_stub_syms = emit_stub_syms;
3620 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3622 if (htab->plt_type == PLT_NEW)
3624 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3625 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3627 /* The new PLT is a loaded section. */
3628 if (htab->plt != NULL
3629 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3632 /* The new GOT is not executable. */
3633 if (htab->got != NULL
3634 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3639 /* Stop an unused .glink section from affecting .text alignment. */
3640 if (htab->glink != NULL
3641 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3644 return htab->plt_type == PLT_NEW;
3647 /* Return the section that should be marked against GC for a given
3651 ppc_elf_gc_mark_hook (asection *sec,
3652 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3653 Elf_Internal_Rela *rel,
3654 struct elf_link_hash_entry *h,
3655 Elf_Internal_Sym *sym)
3659 switch (ELF32_R_TYPE (rel->r_info))
3661 case R_PPC_GNU_VTINHERIT:
3662 case R_PPC_GNU_VTENTRY:
3666 switch (h->root.type)
3668 case bfd_link_hash_defined:
3669 case bfd_link_hash_defweak:
3670 return h->root.u.def.section;
3672 case bfd_link_hash_common:
3673 return h->root.u.c.p->section;
3681 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3686 /* Update the got, plt and dynamic reloc reference counts for the
3687 section being removed. */
3690 ppc_elf_gc_sweep_hook (bfd *abfd,
3691 struct bfd_link_info *info,
3693 const Elf_Internal_Rela *relocs)
3695 struct ppc_elf_link_hash_table *htab;
3696 Elf_Internal_Shdr *symtab_hdr;
3697 struct elf_link_hash_entry **sym_hashes;
3698 bfd_signed_vma *local_got_refcounts;
3699 const Elf_Internal_Rela *rel, *relend;
3702 if ((sec->flags & SEC_ALLOC) == 0)
3705 elf_section_data (sec)->local_dynrel = NULL;
3707 htab = ppc_elf_hash_table (info);
3708 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3709 sym_hashes = elf_sym_hashes (abfd);
3710 local_got_refcounts = elf_local_got_refcounts (abfd);
3711 got2 = bfd_get_section_by_name (abfd, ".got2");
3713 relend = relocs + sec->reloc_count;
3714 for (rel = relocs; rel < relend; rel++)
3716 unsigned long r_symndx;
3717 enum elf_ppc_reloc_type r_type;
3718 struct elf_link_hash_entry *h = NULL;
3720 r_symndx = ELF32_R_SYM (rel->r_info);
3721 if (r_symndx >= symtab_hdr->sh_info)
3723 struct ppc_elf_dyn_relocs **pp, *p;
3724 struct ppc_elf_link_hash_entry *eh;
3726 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3727 while (h->root.type == bfd_link_hash_indirect
3728 || h->root.type == bfd_link_hash_warning)
3729 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3730 eh = (struct ppc_elf_link_hash_entry *) h;
3732 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3735 /* Everything must go for SEC. */
3741 r_type = ELF32_R_TYPE (rel->r_info);
3744 case R_PPC_GOT_TLSLD16:
3745 case R_PPC_GOT_TLSLD16_LO:
3746 case R_PPC_GOT_TLSLD16_HI:
3747 case R_PPC_GOT_TLSLD16_HA:
3748 htab->tlsld_got.refcount -= 1;
3751 case R_PPC_GOT_TLSGD16:
3752 case R_PPC_GOT_TLSGD16_LO:
3753 case R_PPC_GOT_TLSGD16_HI:
3754 case R_PPC_GOT_TLSGD16_HA:
3755 case R_PPC_GOT_TPREL16:
3756 case R_PPC_GOT_TPREL16_LO:
3757 case R_PPC_GOT_TPREL16_HI:
3758 case R_PPC_GOT_TPREL16_HA:
3759 case R_PPC_GOT_DTPREL16:
3760 case R_PPC_GOT_DTPREL16_LO:
3761 case R_PPC_GOT_DTPREL16_HI:
3762 case R_PPC_GOT_DTPREL16_HA:
3764 case R_PPC_GOT16_LO:
3765 case R_PPC_GOT16_HI:
3766 case R_PPC_GOT16_HA:
3769 if (h->got.refcount > 0)
3772 else if (local_got_refcounts != NULL)
3774 if (local_got_refcounts[r_symndx] > 0)
3775 local_got_refcounts[r_symndx]--;
3781 case R_PPC_REL14_BRTAKEN:
3782 case R_PPC_REL14_BRNTAKEN:
3784 if (h == NULL || h == htab->elf.hgot)
3791 case R_PPC_ADDR16_LO:
3792 case R_PPC_ADDR16_HI:
3793 case R_PPC_ADDR16_HA:
3795 case R_PPC_ADDR14_BRTAKEN:
3796 case R_PPC_ADDR14_BRNTAKEN:
3803 case R_PPC_PLTREL24:
3804 case R_PPC_PLTREL32:
3805 case R_PPC_PLT16_LO:
3806 case R_PPC_PLT16_HI:
3807 case R_PPC_PLT16_HA:
3810 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3811 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3812 if (ent->plt.refcount > 0)
3813 ent->plt.refcount -= 1;
3824 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3827 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3829 struct ppc_elf_link_hash_table *htab;
3831 htab = ppc_elf_hash_table (info);
3832 if (htab->plt_type == PLT_NEW
3833 && htab->plt != NULL
3834 && htab->plt->output_section != NULL)
3836 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3837 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3840 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3841 FALSE, FALSE, TRUE);
3842 return _bfd_elf_tls_setup (obfd, info);
3845 /* Run through all the TLS relocs looking for optimization
3849 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3850 struct bfd_link_info *info)
3854 struct ppc_elf_link_hash_table *htab;
3856 if (info->relocatable || info->shared)
3859 htab = ppc_elf_hash_table (info);
3860 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3862 Elf_Internal_Sym *locsyms = NULL;
3863 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3865 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3866 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3868 Elf_Internal_Rela *relstart, *rel, *relend;
3869 int expecting_tls_get_addr;
3871 /* Read the relocations. */
3872 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3874 if (relstart == NULL)
3877 expecting_tls_get_addr = 0;
3878 relend = relstart + sec->reloc_count;
3879 for (rel = relstart; rel < relend; rel++)
3881 enum elf_ppc_reloc_type r_type;
3882 unsigned long r_symndx;
3883 struct elf_link_hash_entry *h = NULL;
3885 char tls_set, tls_clear;
3886 bfd_boolean is_local;
3888 r_symndx = ELF32_R_SYM (rel->r_info);
3889 if (r_symndx >= symtab_hdr->sh_info)
3891 struct elf_link_hash_entry **sym_hashes;
3893 sym_hashes = elf_sym_hashes (ibfd);
3894 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3895 while (h->root.type == bfd_link_hash_indirect
3896 || h->root.type == bfd_link_hash_warning)
3897 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3905 r_type = ELF32_R_TYPE (rel->r_info);
3908 case R_PPC_GOT_TLSLD16:
3909 case R_PPC_GOT_TLSLD16_LO:
3910 case R_PPC_GOT_TLSLD16_HI:
3911 case R_PPC_GOT_TLSLD16_HA:
3912 /* These relocs should never be against a symbol
3913 defined in a shared lib. Leave them alone if
3914 that turns out to be the case. */
3915 expecting_tls_get_addr = 0;
3916 htab->tlsld_got.refcount -= 1;
3923 expecting_tls_get_addr = 1;
3926 case R_PPC_GOT_TLSGD16:
3927 case R_PPC_GOT_TLSGD16_LO:
3928 case R_PPC_GOT_TLSGD16_HI:
3929 case R_PPC_GOT_TLSGD16_HA:
3935 tls_set = TLS_TLS | TLS_TPRELGD;
3937 expecting_tls_get_addr = 1;
3940 case R_PPC_GOT_TPREL16:
3941 case R_PPC_GOT_TPREL16_LO:
3942 case R_PPC_GOT_TPREL16_HI:
3943 case R_PPC_GOT_TPREL16_HA:
3944 expecting_tls_get_addr = 0;
3949 tls_clear = TLS_TPREL;
3956 case R_PPC_REL14_BRTAKEN:
3957 case R_PPC_REL14_BRNTAKEN:
3959 if (expecting_tls_get_addr
3961 && h == htab->tls_get_addr)
3963 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3964 if (ent != NULL && ent->plt.refcount > 0)
3965 ent->plt.refcount -= 1;
3967 expecting_tls_get_addr = 0;
3971 expecting_tls_get_addr = 0;
3979 /* We managed to get rid of a got entry. */
3980 if (h->got.refcount > 0)
3981 h->got.refcount -= 1;
3983 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3987 Elf_Internal_Sym *sym;
3988 bfd_signed_vma *lgot_refs;
3991 if (locsyms == NULL)
3993 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3994 if (locsyms == NULL)
3995 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3996 symtab_hdr->sh_info,
3997 0, NULL, NULL, NULL);
3998 if (locsyms == NULL)
4000 if (elf_section_data (sec)->relocs != relstart)
4005 sym = locsyms + r_symndx;
4006 lgot_refs = elf_local_got_refcounts (ibfd);
4007 if (lgot_refs == NULL)
4011 /* We managed to get rid of a got entry. */
4012 if (lgot_refs[r_symndx] > 0)
4013 lgot_refs[r_symndx] -= 1;
4015 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4016 tls_mask = &lgot_masks[r_symndx];
4019 *tls_mask |= tls_set;
4020 *tls_mask &= ~tls_clear;
4023 if (elf_section_data (sec)->relocs != relstart)
4028 && (symtab_hdr->contents != (unsigned char *) locsyms))
4030 if (!info->keep_memory)
4033 symtab_hdr->contents = (unsigned char *) locsyms;
4039 /* Adjust a symbol defined by a dynamic object and referenced by a
4040 regular object. The current definition is in some section of the
4041 dynamic object, but we're not including those sections. We have to
4042 change the definition to something the rest of the link can
4046 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4047 struct elf_link_hash_entry *h)
4049 struct ppc_elf_link_hash_table *htab;
4051 unsigned int power_of_two;
4054 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4055 h->root.root.string);
4058 /* Make sure we know what is going on here. */
4059 htab = ppc_elf_hash_table (info);
4060 BFD_ASSERT (htab->elf.dynobj != NULL
4062 || h->u.weakdef != NULL
4065 && !h->def_regular)));
4067 /* Deal with function syms. */
4068 if (h->type == STT_FUNC
4071 /* Clear procedure linkage table information for any symbol that
4072 won't need a .plt entry. */
4073 struct plt_entry *ent;
4074 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4075 if (ent->plt.refcount > 0)
4078 || SYMBOL_CALLS_LOCAL (info, h)
4079 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4080 && h->root.type == bfd_link_hash_undefweak))
4082 /* A PLT entry is not required/allowed when:
4084 1. We are not using ld.so; because then the PLT entry
4085 can't be set up, so we can't use one. In this case,
4086 ppc_elf_adjust_dynamic_symbol won't even be called.
4088 2. GC has rendered the entry unused.
4090 3. We know for certain that a call to this symbol
4091 will go to this object, or will remain undefined. */
4092 h->plt.plist = NULL;
4098 h->plt.plist = NULL;
4100 /* If this is a weak symbol, and there is a real definition, the
4101 processor independent code will have arranged for us to see the
4102 real definition first, and we can just use the same value. */
4103 if (h->u.weakdef != NULL)
4105 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4106 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4107 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4108 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4109 if (ELIMINATE_COPY_RELOCS)
4110 h->non_got_ref = h->u.weakdef->non_got_ref;
4114 /* This is a reference to a symbol defined by a dynamic object which
4115 is not a function. */
4117 /* If we are creating a shared library, we must presume that the
4118 only references to the symbol are via the global offset table.
4119 For such cases we need not do anything here; the relocations will
4120 be handled correctly by relocate_section. */
4124 /* If there are no references to this symbol that do not use the
4125 GOT, we don't need to generate a copy reloc. */
4126 if (!h->non_got_ref)
4129 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4130 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4131 do this if there are any small data relocations. */
4132 if (ELIMINATE_COPY_RELOCS
4133 && !ppc_elf_hash_entry (h)->has_sda_refs)
4135 struct ppc_elf_dyn_relocs *p;
4136 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4138 s = p->sec->output_section;
4139 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4152 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4153 h->root.root.string);
4157 /* We must allocate the symbol in our .dynbss section, which will
4158 become part of the .bss section of the executable. There will be
4159 an entry for this symbol in the .dynsym section. The dynamic
4160 object will contain position independent code, so all references
4161 from the dynamic object to this symbol will go through the global
4162 offset table. The dynamic linker will use the .dynsym entry to
4163 determine the address it must put in the global offset table, so
4164 both the dynamic object and the regular object will refer to the
4165 same memory location for the variable.
4167 Of course, if the symbol is referenced using SDAREL relocs, we
4168 must instead allocate it in .sbss. */
4170 if (ppc_elf_hash_entry (h)->has_sda_refs)
4174 BFD_ASSERT (s != NULL);
4176 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4177 copy the initial value out of the dynamic object and into the
4178 runtime process image. We need to remember the offset into the
4179 .rela.bss section we are going to use. */
4180 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4184 if (ppc_elf_hash_entry (h)->has_sda_refs)
4185 srel = htab->relsbss;
4187 srel = htab->relbss;
4188 BFD_ASSERT (srel != NULL);
4189 srel->size += sizeof (Elf32_External_Rela);
4193 /* We need to figure out the alignment required for this symbol. I
4194 have no idea how ELF linkers handle this. */
4195 power_of_two = bfd_log2 (h->size);
4196 if (power_of_two > 4)
4199 /* Apply the required alignment. */
4200 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4201 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4203 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4207 /* Define the symbol as being at this point in the section. */
4208 h->root.u.def.section = s;
4209 h->root.u.def.value = s->size;
4211 /* Increment the section size to make room for the symbol. */
4217 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4218 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4219 specifying the addend on the plt relocation. For -fpic code, the sym
4220 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4221 xxxxxxxx.got2.plt_pic32.<callee>. */
4224 add_stub_sym (struct plt_entry *ent,
4225 struct elf_link_hash_entry *h,
4226 struct bfd_link_info *info)
4228 struct elf_link_hash_entry *sh;
4229 size_t len1, len2, len3;
4232 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4234 if (info->shared || info->pie)
4235 stub = ".plt_pic32.";
4237 stub = ".plt_call32.";
4239 len1 = strlen (h->root.root.string);
4240 len2 = strlen (stub);
4243 len3 = strlen (ent->sec->name);
4244 name = bfd_malloc (len1 + len2 + len3 + 9);
4247 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4249 memcpy (name + 8, ent->sec->name, len3);
4250 memcpy (name + 8 + len3, stub, len2);
4251 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4252 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4255 if (sh->root.type == bfd_link_hash_new)
4257 sh->root.type = bfd_link_hash_defined;
4258 sh->root.u.def.section = htab->glink;
4259 sh->root.u.def.value = ent->glink_offset;
4260 sh->ref_regular = 1;
4261 sh->def_regular = 1;
4262 sh->ref_regular_nonweak = 1;
4263 sh->forced_local = 1;
4269 /* Allocate NEED contiguous space in .got, and return the offset.
4270 Handles allocation of the got header when crossing 32k. */
4273 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4276 unsigned int max_before_header;
4278 if (htab->plt_type == PLT_VXWORKS)
4280 where = htab->got->size;
4281 htab->got->size += need;
4285 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4286 if (need <= htab->got_gap)
4288 where = max_before_header - htab->got_gap;
4289 htab->got_gap -= need;
4293 if (htab->got->size + need > max_before_header
4294 && htab->got->size <= max_before_header)
4296 htab->got_gap = max_before_header - htab->got->size;
4297 htab->got->size = max_before_header + htab->got_header_size;
4299 where = htab->got->size;
4300 htab->got->size += need;
4306 /* Allocate space in associated reloc sections for dynamic relocs. */
4309 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4311 struct bfd_link_info *info = inf;
4312 struct ppc_elf_link_hash_entry *eh;
4313 struct ppc_elf_link_hash_table *htab;
4314 struct ppc_elf_dyn_relocs *p;
4316 if (h->root.type == bfd_link_hash_indirect)
4319 if (h->root.type == bfd_link_hash_warning)
4320 /* When warning symbols are created, they **replace** the "real"
4321 entry in the hash table, thus we never get to see the real
4322 symbol in a hash traversal. So look at it now. */
4323 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4325 htab = ppc_elf_hash_table (info);
4326 if (htab->elf.dynamic_sections_created)
4328 struct plt_entry *ent;
4329 bfd_boolean doneone = FALSE;
4330 bfd_vma plt_offset = 0, glink_offset = 0;
4332 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4333 if (ent->plt.refcount > 0)
4335 /* Make sure this symbol is output as a dynamic symbol. */
4336 if (h->dynindx == -1
4337 && !h->forced_local)
4339 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4344 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4346 asection *s = htab->plt;
4348 if (htab->plt_type == PLT_NEW)
4352 plt_offset = s->size;
4355 ent->plt.offset = plt_offset;
4358 if (!doneone || info->shared || info->pie)
4360 glink_offset = s->size;
4361 s->size += GLINK_ENTRY_SIZE;
4367 h->root.u.def.section = s;
4368 h->root.u.def.value = glink_offset;
4370 ent->glink_offset = glink_offset;
4372 if (htab->emit_stub_syms
4373 && !add_stub_sym (ent, h, info))
4380 /* If this is the first .plt entry, make room
4381 for the special first entry. */
4383 s->size += htab->plt_initial_entry_size;
4385 /* The PowerPC PLT is actually composed of two
4386 parts, the first part is 2 words (for a load
4387 and a jump), and then there is a remaining
4388 word available at the end. */
4389 plt_offset = (htab->plt_initial_entry_size
4390 + (htab->plt_slot_size
4392 - htab->plt_initial_entry_size)
4393 / htab->plt_entry_size)));
4395 /* If this symbol is not defined in a regular
4396 file, and we are not generating a shared
4397 library, then set the symbol to this location
4398 in the .plt. This is required to make
4399 function pointers compare as equal between
4400 the normal executable and the shared library. */
4404 h->root.u.def.section = s;
4405 h->root.u.def.value = plt_offset;
4408 /* Make room for this entry. */
4409 s->size += htab->plt_entry_size;
4410 /* After the 8192nd entry, room for two entries
4412 if (htab->plt_type == PLT_OLD
4413 && (s->size - htab->plt_initial_entry_size)
4414 / htab->plt_entry_size
4415 > PLT_NUM_SINGLE_ENTRIES)
4416 s->size += htab->plt_entry_size;
4418 ent->plt.offset = plt_offset;
4421 /* We also need to make an entry in the .rela.plt section. */
4424 htab->relplt->size += sizeof (Elf32_External_Rela);
4426 if (htab->plt_type == PLT_VXWORKS)
4428 /* Allocate space for the unloaded relocations. */
4432 == (bfd_vma) htab->plt_initial_entry_size)
4434 htab->srelplt2->size
4435 += sizeof (Elf32_External_Rela)
4436 * VXWORKS_PLTRESOLVE_RELOCS;
4439 htab->srelplt2->size
4440 += sizeof (Elf32_External_Rela)
4441 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4444 /* Every PLT entry has an associated GOT entry in
4446 htab->sgotplt->size += 4;
4452 ent->plt.offset = (bfd_vma) -1;
4456 h->plt.plist = NULL;
4463 h->plt.plist = NULL;
4467 eh = (struct ppc_elf_link_hash_entry *) h;
4468 if (eh->elf.got.refcount > 0)
4470 /* Make sure this symbol is output as a dynamic symbol. */
4471 if (eh->elf.dynindx == -1
4472 && !eh->elf.forced_local)
4474 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4478 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4479 && !eh->elf.def_dynamic)
4480 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4481 eh->elf.got.offset = (bfd_vma) -1;
4485 unsigned int need = 0;
4486 if ((eh->tls_mask & TLS_TLS) != 0)
4488 if ((eh->tls_mask & TLS_LD) != 0)
4490 if ((eh->tls_mask & TLS_GD) != 0)
4492 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4494 if ((eh->tls_mask & TLS_DTPREL) != 0)
4499 eh->elf.got.offset = allocate_got (htab, need);
4500 dyn = htab->elf.dynamic_sections_created;
4502 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4503 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4504 || eh->elf.root.type != bfd_link_hash_undefweak))
4506 /* All the entries we allocated need relocs.
4507 Except LD only needs one. */
4508 if ((eh->tls_mask & TLS_LD) != 0)
4510 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4515 eh->elf.got.offset = (bfd_vma) -1;
4517 if (eh->dyn_relocs == NULL)
4520 /* In the shared -Bsymbolic case, discard space allocated for
4521 dynamic pc-relative relocs against symbols which turn out to be
4522 defined in regular objects. For the normal shared case, discard
4523 space for relocs that have become local due to symbol visibility
4528 /* Relocs that use pc_count are those that appear on a call insn,
4529 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4530 generated via assembly. We want calls to protected symbols to
4531 resolve directly to the function rather than going via the plt.
4532 If people want function pointer comparisons to work as expected
4533 then they should avoid writing weird assembly. */
4534 if (SYMBOL_CALLS_LOCAL (info, h))
4536 struct ppc_elf_dyn_relocs **pp;
4538 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4540 p->count -= p->pc_count;
4549 /* Also discard relocs on undefined weak syms with non-default
4551 if (eh->dyn_relocs != NULL
4552 && h->root.type == bfd_link_hash_undefweak)
4554 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4555 eh->dyn_relocs = NULL;
4557 /* Make sure undefined weak symbols are output as a dynamic
4559 else if (h->dynindx == -1
4560 && !h->forced_local)
4562 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4567 else if (ELIMINATE_COPY_RELOCS)
4569 /* For the non-shared case, discard space for relocs against
4570 symbols which turn out to need copy relocs or are not
4577 /* Make sure this symbol is output as a dynamic symbol.
4578 Undefined weak syms won't yet be marked as dynamic. */
4579 if (h->dynindx == -1
4580 && !h->forced_local)
4582 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4586 /* If that succeeded, we know we'll be keeping all the
4588 if (h->dynindx != -1)
4592 eh->dyn_relocs = NULL;
4597 /* Finally, allocate space. */
4598 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4600 asection *sreloc = elf_section_data (p->sec)->sreloc;
4601 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4607 /* Find any dynamic relocs that apply to read-only sections. */
4610 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4612 struct ppc_elf_dyn_relocs *p;
4614 if (h->root.type == bfd_link_hash_indirect)
4617 if (h->root.type == bfd_link_hash_warning)
4618 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4620 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4622 asection *s = p->sec->output_section;
4625 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4626 == (SEC_READONLY | SEC_ALLOC)))
4628 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4630 /* Not an error, just cut short the traversal. */
4637 /* Set the sizes of the dynamic sections. */
4640 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4641 struct bfd_link_info *info)
4643 struct ppc_elf_link_hash_table *htab;
4649 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4652 htab = ppc_elf_hash_table (info);
4653 BFD_ASSERT (htab->elf.dynobj != NULL);
4655 if (elf_hash_table (info)->dynamic_sections_created)
4657 /* Set the contents of the .interp section to the interpreter. */
4658 if (info->executable)
4660 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4661 BFD_ASSERT (s != NULL);
4662 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4663 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4667 if (htab->plt_type == PLT_OLD)
4668 htab->got_header_size = 16;
4669 else if (htab->plt_type == PLT_NEW)
4670 htab->got_header_size = 12;
4672 /* Set up .got offsets for local syms, and space for local dynamic
4674 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4676 bfd_signed_vma *local_got;
4677 bfd_signed_vma *end_local_got;
4679 bfd_size_type locsymcount;
4680 Elf_Internal_Shdr *symtab_hdr;
4682 if (!is_ppc_elf_target (ibfd->xvec))
4685 for (s = ibfd->sections; s != NULL; s = s->next)
4687 struct ppc_elf_dyn_relocs *p;
4689 for (p = ((struct ppc_elf_dyn_relocs *)
4690 elf_section_data (s)->local_dynrel);
4694 if (!bfd_is_abs_section (p->sec)
4695 && bfd_is_abs_section (p->sec->output_section))
4697 /* Input section has been discarded, either because
4698 it is a copy of a linkonce section or due to
4699 linker script /DISCARD/, so we'll be discarding
4702 else if (p->count != 0)
4704 elf_section_data (p->sec)->sreloc->size
4705 += p->count * sizeof (Elf32_External_Rela);
4706 if ((p->sec->output_section->flags
4707 & (SEC_READONLY | SEC_ALLOC))
4708 == (SEC_READONLY | SEC_ALLOC))
4709 info->flags |= DF_TEXTREL;
4714 local_got = elf_local_got_refcounts (ibfd);
4718 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4719 locsymcount = symtab_hdr->sh_info;
4720 end_local_got = local_got + locsymcount;
4721 lgot_masks = (char *) end_local_got;
4722 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4725 if (*lgot_masks == (TLS_TLS | TLS_LD))
4727 /* If just an LD reloc, we'll just use
4728 htab->tlsld_got.offset. */
4729 htab->tlsld_got.refcount += 1;
4730 *local_got = (bfd_vma) -1;
4734 unsigned int need = 0;
4735 if ((*lgot_masks & TLS_TLS) != 0)
4737 if ((*lgot_masks & TLS_GD) != 0)
4739 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4741 if ((*lgot_masks & TLS_DTPREL) != 0)
4746 *local_got = allocate_got (htab, need);
4748 htab->relgot->size += (need
4749 * (sizeof (Elf32_External_Rela) / 4));
4753 *local_got = (bfd_vma) -1;
4756 if (htab->tlsld_got.refcount > 0)
4758 htab->tlsld_got.offset = allocate_got (htab, 8);
4760 htab->relgot->size += sizeof (Elf32_External_Rela);
4763 htab->tlsld_got.offset = (bfd_vma) -1;
4765 /* Allocate space for global sym dynamic relocs. */
4766 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4768 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
4770 unsigned int g_o_t = 32768;
4772 /* If we haven't allocated the header, do so now. When we get here,
4773 for old plt/got the got size will be 0 to 32764 (not allocated),
4774 or 32780 to 65536 (header allocated). For new plt/got, the
4775 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4776 if (htab->got->size <= 32768)
4778 g_o_t = htab->got->size;
4779 if (htab->plt_type == PLT_OLD)
4781 htab->got->size += htab->got_header_size;
4784 htab->elf.hgot->root.u.def.value = g_o_t;
4787 if (htab->glink != NULL && htab->glink->size != 0)
4789 htab->glink_pltresolve = htab->glink->size;
4790 /* Space for the branch table. */
4791 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4792 /* Pad out to align the start of PLTresolve. */
4793 htab->glink->size += -htab->glink->size & 15;
4794 htab->glink->size += GLINK_PLTRESOLVE;
4796 if (htab->emit_stub_syms)
4798 struct elf_link_hash_entry *sh;
4799 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4800 TRUE, FALSE, FALSE);
4803 if (sh->root.type == bfd_link_hash_new)
4805 sh->root.type = bfd_link_hash_defined;
4806 sh->root.u.def.section = htab->glink;
4807 sh->root.u.def.value = htab->glink_pltresolve;
4808 sh->ref_regular = 1;
4809 sh->def_regular = 1;
4810 sh->ref_regular_nonweak = 1;
4811 sh->forced_local = 1;
4814 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4815 TRUE, FALSE, FALSE);
4818 if (sh->root.type == bfd_link_hash_new)
4820 sh->root.type = bfd_link_hash_defined;
4821 sh->root.u.def.section = htab->glink;
4822 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4823 sh->ref_regular = 1;
4824 sh->def_regular = 1;
4825 sh->ref_regular_nonweak = 1;
4826 sh->forced_local = 1;
4832 /* We've now determined the sizes of the various dynamic sections.
4833 Allocate memory for them. */
4835 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4837 bfd_boolean strip_section = TRUE;
4839 if ((s->flags & SEC_LINKER_CREATED) == 0)
4845 || s == htab->sgotplt
4847 || s == htab->dynbss
4848 || s == htab->dynsbss)
4850 /* We'd like to strip these sections if they aren't needed, but if
4851 we've exported dynamic symbols from them we must leave them.
4852 It's too late to tell BFD to get rid of the symbols. */
4853 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
4854 strip_section = FALSE;
4855 /* Strip this section if we don't need it; see the
4858 else if (s == htab->sdata[0].section
4859 || s == htab->sdata[1].section)
4861 /* Strip these too. */
4863 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4867 /* Remember whether there are any relocation sections. */
4870 /* We use the reloc_count field as a counter if we need
4871 to copy relocs into the output file. */
4877 /* It's not one of our sections, so don't allocate space. */
4881 if (s->size == 0 && strip_section)
4883 /* If we don't need this section, strip it from the
4884 output file. This is mostly to handle .rela.bss and
4885 .rela.plt. We must create both sections in
4886 create_dynamic_sections, because they must be created
4887 before the linker maps input sections to output
4888 sections. The linker does that before
4889 adjust_dynamic_symbol is called, and it is that
4890 function which decides whether anything needs to go
4891 into these sections. */
4892 s->flags |= SEC_EXCLUDE;
4896 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4899 /* Allocate memory for the section contents. */
4900 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4901 if (s->contents == NULL)
4905 if (htab->elf.dynamic_sections_created)
4907 /* Add some entries to the .dynamic section. We fill in the
4908 values later, in ppc_elf_finish_dynamic_sections, but we
4909 must add the entries now so that we get the correct size for
4910 the .dynamic section. The DT_DEBUG entry is filled in by the
4911 dynamic linker and used by the debugger. */
4912 #define add_dynamic_entry(TAG, VAL) \
4913 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4915 if (info->executable)
4917 if (!add_dynamic_entry (DT_DEBUG, 0))
4921 if (htab->plt != NULL && htab->plt->size != 0)
4923 if (!add_dynamic_entry (DT_PLTGOT, 0)
4924 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4925 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4926 || !add_dynamic_entry (DT_JMPREL, 0))
4930 if (htab->glink != NULL && htab->glink->size != 0)
4932 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4938 if (!add_dynamic_entry (DT_RELA, 0)
4939 || !add_dynamic_entry (DT_RELASZ, 0)
4940 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4944 /* If any dynamic relocs apply to a read-only section, then we
4945 need a DT_TEXTREL entry. */
4946 if ((info->flags & DF_TEXTREL) == 0)
4947 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4950 if ((info->flags & DF_TEXTREL) != 0)
4952 if (!add_dynamic_entry (DT_TEXTREL, 0))
4956 #undef add_dynamic_entry
4961 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4963 static const int shared_stub_entry[] =
4965 0x7c0802a6, /* mflr 0 */
4966 0x429f0005, /* bcl 20, 31, .Lxxx */
4967 0x7d6802a6, /* mflr 11 */
4968 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4969 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4970 0x7c0803a6, /* mtlr 0 */
4971 0x7d6903a6, /* mtctr 11 */
4972 0x4e800420, /* bctr */
4975 static const int stub_entry[] =
4977 0x3d600000, /* lis 11,xxx@ha */
4978 0x396b0000, /* addi 11,11,xxx@l */
4979 0x7d6903a6, /* mtctr 11 */
4980 0x4e800420, /* bctr */
4984 ppc_elf_relax_section (bfd *abfd,
4986 struct bfd_link_info *link_info,
4991 struct one_fixup *next;
4997 Elf_Internal_Shdr *symtab_hdr;
4998 bfd_byte *contents = NULL;
4999 Elf_Internal_Sym *isymbuf = NULL;
5000 Elf_Internal_Rela *internal_relocs = NULL;
5001 Elf_Internal_Rela *irel, *irelend;
5002 struct one_fixup *fixups = NULL;
5003 bfd_boolean changed;
5004 struct ppc_elf_link_hash_table *htab;
5005 bfd_size_type trampoff;
5010 /* Nothing to do if there are no relocations, and no need to do
5011 anything with non-alloc sections. */
5012 if ((isec->flags & SEC_ALLOC) == 0
5013 || (isec->flags & SEC_RELOC) == 0
5014 || isec->reloc_count == 0)
5017 trampoff = (isec->size + 3) & (bfd_vma) -4;
5018 /* Space for a branch around any trampolines. */
5021 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5023 /* Get a copy of the native relocations. */
5024 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5025 link_info->keep_memory);
5026 if (internal_relocs == NULL)
5029 htab = ppc_elf_hash_table (link_info);
5030 got2 = bfd_get_section_by_name (abfd, ".got2");
5032 irelend = internal_relocs + isec->reloc_count;
5033 for (irel = internal_relocs; irel < irelend; irel++)
5035 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5036 bfd_vma symaddr, reladdr, toff, roff;
5038 struct one_fixup *f;
5039 size_t insn_offset = 0;
5040 bfd_vma max_branch_offset, val;
5043 unsigned char sym_type;
5048 case R_PPC_LOCAL24PC:
5049 case R_PPC_PLTREL24:
5050 max_branch_offset = 1 << 25;
5054 case R_PPC_REL14_BRTAKEN:
5055 case R_PPC_REL14_BRNTAKEN:
5056 max_branch_offset = 1 << 15;
5063 /* Get the value of the symbol referred to by the reloc. */
5064 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5066 /* A local symbol. */
5067 Elf_Internal_Sym *isym;
5069 /* Read this BFD's local symbols. */
5070 if (isymbuf == NULL)
5072 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5073 if (isymbuf == NULL)
5074 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5075 symtab_hdr->sh_info, 0,
5080 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5081 if (isym->st_shndx == SHN_UNDEF)
5082 continue; /* We can't do anything with undefined symbols. */
5083 else if (isym->st_shndx == SHN_ABS)
5084 tsec = bfd_abs_section_ptr;
5085 else if (isym->st_shndx == SHN_COMMON)
5086 tsec = bfd_com_section_ptr;
5088 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5090 toff = isym->st_value;
5091 sym_type = ELF_ST_TYPE (isym->st_info);
5095 /* Global symbol handling. */
5097 struct elf_link_hash_entry *h;
5099 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5100 h = elf_sym_hashes (abfd)[indx];
5102 while (h->root.type == bfd_link_hash_indirect
5103 || h->root.type == bfd_link_hash_warning)
5104 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5108 if (r_type == R_PPC_PLTREL24
5109 && htab->plt != NULL)
5111 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5115 if (htab->plt_type == PLT_NEW)
5118 toff = ent->glink_offset;
5123 toff = ent->plt.offset;
5129 else if (h->root.type == bfd_link_hash_defined
5130 || h->root.type == bfd_link_hash_defweak)
5132 tsec = h->root.u.def.section;
5133 toff = h->root.u.def.value;
5141 /* If the branch and target are in the same section, you have
5142 no hope of adding stubs. We'll error out later should the
5147 /* There probably isn't any reason to handle symbols in
5148 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5149 attribute for a code section, and we are only looking at
5150 branches. However, implement it correctly here as a
5151 reference for other target relax_section functions. */
5152 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5154 /* At this stage in linking, no SEC_MERGE symbol has been
5155 adjusted, so all references to such symbols need to be
5156 passed through _bfd_merged_section_offset. (Later, in
5157 relocate_section, all SEC_MERGE symbols *except* for
5158 section symbols have been adjusted.)
5160 gas may reduce relocations against symbols in SEC_MERGE
5161 sections to a relocation against the section symbol when
5162 the original addend was zero. When the reloc is against
5163 a section symbol we should include the addend in the
5164 offset passed to _bfd_merged_section_offset, since the
5165 location of interest is the original symbol. On the
5166 other hand, an access to "sym+addend" where "sym" is not
5167 a section symbol should not include the addend; Such an
5168 access is presumed to be an offset from "sym"; The
5169 location of interest is just "sym". */
5170 if (sym_type == STT_SECTION)
5171 toff += irel->r_addend;
5173 toff = _bfd_merged_section_offset (abfd, &tsec,
5174 elf_section_data (tsec)->sec_info,
5177 if (sym_type != STT_SECTION)
5178 toff += irel->r_addend;
5180 /* PLTREL24 addends are special. */
5181 else if (r_type != R_PPC_PLTREL24)
5182 toff += irel->r_addend;
5184 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5186 roff = irel->r_offset;
5187 reladdr = isec->output_section->vma + isec->output_offset + roff;
5189 /* If the branch is in range, no need to do anything. */
5190 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5193 /* Look for an existing fixup to this address. */
5194 for (f = fixups; f ; f = f->next)
5195 if (f->tsec == tsec && f->toff == toff)
5201 unsigned long stub_rtype;
5203 val = trampoff - roff;
5204 if (val >= max_branch_offset)
5205 /* Oh dear, we can't reach a trampoline. Don't try to add
5206 one. We'll report an error later. */
5209 if (link_info->shared)
5211 size = 4 * ARRAY_SIZE (shared_stub_entry);
5213 stub_rtype = R_PPC_RELAX32PC;
5217 size = 4 * ARRAY_SIZE (stub_entry);
5219 stub_rtype = R_PPC_RELAX32;
5222 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5223 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5225 if (tsec == htab->plt
5226 || tsec == htab->glink)
5227 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5229 /* Hijack the old relocation. Since we need two
5230 relocations for this use a "composite" reloc. */
5231 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5233 irel->r_offset = trampoff + insn_offset;
5235 /* Record the fixup so we don't do it again this section. */
5236 f = bfd_malloc (sizeof (*f));
5240 f->trampoff = trampoff;
5247 val = f->trampoff - roff;
5248 if (val >= max_branch_offset)
5251 /* Nop out the reloc, since we're finalizing things here. */
5252 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5255 /* Get the section contents. */
5256 if (contents == NULL)
5258 /* Get cached copy if it exists. */
5259 if (elf_section_data (isec)->this_hdr.contents != NULL)
5260 contents = elf_section_data (isec)->this_hdr.contents;
5263 /* Go get them off disk. */
5264 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5269 /* Fix up the existing branch to hit the trampoline. */
5270 hit_addr = contents + roff;
5274 case R_PPC_LOCAL24PC:
5275 case R_PPC_PLTREL24:
5276 t0 = bfd_get_32 (abfd, hit_addr);
5278 t0 |= val & 0x3fffffc;
5279 bfd_put_32 (abfd, t0, hit_addr);
5283 case R_PPC_REL14_BRTAKEN:
5284 case R_PPC_REL14_BRNTAKEN:
5285 t0 = bfd_get_32 (abfd, hit_addr);
5288 bfd_put_32 (abfd, t0, hit_addr);
5293 /* Write out the trampolines. */
5294 changed = fixups != NULL;
5304 struct one_fixup *f = fixups;
5305 fixups = fixups->next;
5310 contents = bfd_realloc (contents, trampoff);
5311 if (contents == NULL)
5314 isec->size = (isec->size + 3) & (bfd_vma) -4;
5315 /* Branch around the trampolines. */
5316 val = trampoff - isec->size + 0x48000000;
5317 dest = contents + isec->size;
5318 isec->size = trampoff;
5319 bfd_put_32 (abfd, val, dest);
5322 if (link_info->shared)
5324 stub = shared_stub_entry;
5325 size = ARRAY_SIZE (shared_stub_entry);
5330 size = ARRAY_SIZE (stub_entry);
5334 while (dest < contents + trampoff)
5336 bfd_put_32 (abfd, stub[i], dest);
5342 BFD_ASSERT (i == 0);
5346 && symtab_hdr->contents != (unsigned char *) isymbuf)
5348 if (! link_info->keep_memory)
5352 /* Cache the symbols for elf_link_input_bfd. */
5353 symtab_hdr->contents = (unsigned char *) isymbuf;
5357 if (contents != NULL
5358 && elf_section_data (isec)->this_hdr.contents != contents)
5360 if (!changed && !link_info->keep_memory)
5364 /* Cache the section contents for elf_link_input_bfd. */
5365 elf_section_data (isec)->this_hdr.contents = contents;
5369 if (elf_section_data (isec)->relocs != internal_relocs)
5372 free (internal_relocs);
5374 elf_section_data (isec)->relocs = internal_relocs;
5381 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5383 if (contents != NULL
5384 && elf_section_data (isec)->this_hdr.contents != contents)
5386 if (internal_relocs != NULL
5387 && elf_section_data (isec)->relocs != internal_relocs)
5388 free (internal_relocs);
5392 /* What to do when ld finds relocations against symbols defined in
5393 discarded sections. */
5396 ppc_elf_action_discarded (asection *sec)
5398 if (strcmp (".fixup", sec->name) == 0)
5401 if (strcmp (".got2", sec->name) == 0)
5404 return _bfd_elf_default_action_discarded (sec);
5407 /* Fill in the address for a pointer generated in a linker section. */
5410 elf_finish_pointer_linker_section (bfd *input_bfd,
5411 elf_linker_section_t *lsect,
5412 struct elf_link_hash_entry *h,
5414 const Elf_Internal_Rela *rel)
5416 elf_linker_section_pointers_t *linker_section_ptr;
5418 BFD_ASSERT (lsect != NULL);
5422 /* Handle global symbol. */
5423 struct ppc_elf_link_hash_entry *eh;
5425 eh = (struct ppc_elf_link_hash_entry *) h;
5426 BFD_ASSERT (eh->elf.def_regular);
5427 linker_section_ptr = eh->linker_section_pointer;
5431 /* Handle local symbol. */
5432 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5434 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5435 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5438 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5441 BFD_ASSERT (linker_section_ptr != NULL);
5443 /* Offset will always be a multiple of four, so use the bottom bit
5444 as a "written" flag. */
5445 if ((linker_section_ptr->offset & 1) == 0)
5447 bfd_put_32 (lsect->section->owner,
5448 relocation + linker_section_ptr->addend,
5449 lsect->section->contents + linker_section_ptr->offset);
5450 linker_section_ptr->offset += 1;
5453 relocation = (lsect->section->output_offset
5454 + linker_section_ptr->offset - 1
5459 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5460 lsect->name, (long) relocation, (long) relocation);
5463 /* Subtract out the addend, because it will get added back in by the normal
5465 return relocation - linker_section_ptr->addend;
5468 /* The RELOCATE_SECTION function is called by the ELF backend linker
5469 to handle the relocations for a section.
5471 The relocs are always passed as Rela structures; if the section
5472 actually uses Rel structures, the r_addend field will always be
5475 This function is responsible for adjust the section contents as
5476 necessary, and (if using Rela relocs and generating a
5477 relocatable output file) adjusting the reloc addend as
5480 This function does not have to worry about setting the reloc
5481 address or the reloc symbol index.
5483 LOCAL_SYMS is a pointer to the swapped in local symbols.
5485 LOCAL_SECTIONS is an array giving the section in the input file
5486 corresponding to the st_shndx field of each local symbol.
5488 The global hash table entry for the global symbols can be found
5489 via elf_sym_hashes (input_bfd).
5491 When generating relocatable output, this function must handle
5492 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5493 going to be the section symbol corresponding to the output
5494 section, which means that the addend must be adjusted
5498 ppc_elf_relocate_section (bfd *output_bfd,
5499 struct bfd_link_info *info,
5501 asection *input_section,
5503 Elf_Internal_Rela *relocs,
5504 Elf_Internal_Sym *local_syms,
5505 asection **local_sections)
5507 Elf_Internal_Shdr *symtab_hdr;
5508 struct elf_link_hash_entry **sym_hashes;
5509 struct ppc_elf_link_hash_table *htab;
5510 Elf_Internal_Rela *rel;
5511 Elf_Internal_Rela *relend;
5512 Elf_Internal_Rela outrel;
5514 asection *got2, *sreloc = NULL;
5515 bfd_vma *local_got_offsets;
5516 bfd_boolean ret = TRUE;
5519 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5520 "%ld relocations%s",
5521 input_bfd, input_section,
5522 (long) input_section->reloc_count,
5523 (info->relocatable) ? " (relocatable)" : "");
5526 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5528 if (info->relocatable)
5534 relend = relocs + input_section->reloc_count;
5535 for (; rel < relend; rel++)
5537 enum elf_ppc_reloc_type r_type;
5539 r_type = ELF32_R_TYPE (rel->r_info);
5540 if (r_type == R_PPC_PLTREL24
5541 && rel->r_addend >= 32768)
5543 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5544 addend specifies the GOT pointer offset within .got2. */
5545 rel->r_addend += got2->output_offset;
5551 /* Initialize howto table if not already done. */
5552 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5553 ppc_elf_howto_init ();
5555 htab = ppc_elf_hash_table (info);
5556 local_got_offsets = elf_local_got_offsets (input_bfd);
5557 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5558 sym_hashes = elf_sym_hashes (input_bfd);
5560 relend = relocs + input_section->reloc_count;
5561 for (; rel < relend; rel++)
5563 enum elf_ppc_reloc_type r_type;
5565 bfd_reloc_status_type r;
5566 Elf_Internal_Sym *sym;
5568 struct elf_link_hash_entry *h;
5569 const char *sym_name;
5570 reloc_howto_type *howto;
5571 unsigned long r_symndx;
5573 bfd_vma branch_bit, insn, from;
5574 bfd_boolean unresolved_reloc;
5576 unsigned int tls_type, tls_mask, tls_gd;
5578 r_type = ELF32_R_TYPE (rel->r_info);
5582 unresolved_reloc = FALSE;
5584 r_symndx = ELF32_R_SYM (rel->r_info);
5586 if (r_symndx < symtab_hdr->sh_info)
5588 sym = local_syms + r_symndx;
5589 sec = local_sections[r_symndx];
5590 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5592 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5596 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5597 r_symndx, symtab_hdr, sym_hashes,
5599 unresolved_reloc, warned);
5601 sym_name = h->root.root.string;
5604 /* TLS optimizations. Replace instruction sequences and relocs
5605 based on information we collected in tls_optimize. We edit
5606 RELOCS so that --emit-relocs will output something sensible
5607 for the final instruction stream. */
5610 if (IS_PPC_TLS_RELOC (r_type))
5613 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5614 else if (local_got_offsets != NULL)
5617 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5618 tls_mask = lgot_masks[r_symndx];
5622 /* Ensure reloc mapping code below stays sane. */
5623 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5624 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5625 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5626 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5627 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5628 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5629 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5630 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5637 case R_PPC_GOT_TPREL16:
5638 case R_PPC_GOT_TPREL16_LO:
5640 && (tls_mask & TLS_TPREL) == 0)
5643 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5645 insn |= 0x3c020000; /* addis 0,2,0 */
5646 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5647 r_type = R_PPC_TPREL16_HA;
5648 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5654 && (tls_mask & TLS_TPREL) == 0)
5657 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5658 if ((insn & ((31 << 26) | (31 << 11)))
5659 == ((31 << 26) | (2 << 11)))
5660 rtra = insn & ((1 << 26) - (1 << 16));
5661 else if ((insn & ((31 << 26) | (31 << 16)))
5662 == ((31 << 26) | (2 << 16)))
5663 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5666 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5669 else if ((insn & (31 << 1)) == 23 << 1
5670 && ((insn & (31 << 6)) < 14 << 6
5671 || ((insn & (31 << 6)) >= 16 << 6
5672 && (insn & (31 << 6)) < 24 << 6)))
5673 /* load and store indexed -> dform. */
5674 insn = (32 | ((insn >> 6) & 31)) << 26;
5675 else if ((insn & (31 << 1)) == 21 << 1
5676 && (insn & (0x1a << 6)) == 0)
5677 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5678 insn = (((58 | ((insn >> 6) & 4)) << 26)
5679 | ((insn >> 6) & 1));
5680 else if ((insn & (31 << 1)) == 21 << 1
5681 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5683 insn = (58 << 26) | 2;
5687 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5688 r_type = R_PPC_TPREL16_LO;
5689 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5690 /* Was PPC_TLS which sits on insn boundary, now
5691 PPC_TPREL16_LO which is at insn+2. */
5696 case R_PPC_GOT_TLSGD16_HI:
5697 case R_PPC_GOT_TLSGD16_HA:
5698 tls_gd = TLS_TPRELGD;
5699 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5703 case R_PPC_GOT_TLSLD16_HI:
5704 case R_PPC_GOT_TLSLD16_HA:
5705 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5708 if ((tls_mask & tls_gd) != 0)
5709 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5710 + R_PPC_GOT_TPREL16);
5713 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5715 r_type = R_PPC_NONE;
5717 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5721 case R_PPC_GOT_TLSGD16:
5722 case R_PPC_GOT_TLSGD16_LO:
5723 tls_gd = TLS_TPRELGD;
5724 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5725 goto tls_get_addr_check;
5728 case R_PPC_GOT_TLSLD16:
5729 case R_PPC_GOT_TLSLD16_LO:
5730 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5733 if (rel + 1 < relend)
5735 enum elf_ppc_reloc_type r_type2;
5736 unsigned long r_symndx2;
5737 struct elf_link_hash_entry *h2;
5738 bfd_vma insn1, insn2;
5741 /* The next instruction should be a call to
5742 __tls_get_addr. Peek at the reloc to be sure. */
5743 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5744 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5745 if (r_symndx2 < symtab_hdr->sh_info
5746 || (r_type2 != R_PPC_REL14
5747 && r_type2 != R_PPC_REL14_BRTAKEN
5748 && r_type2 != R_PPC_REL14_BRNTAKEN
5749 && r_type2 != R_PPC_REL24
5750 && r_type2 != R_PPC_PLTREL24))
5753 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5754 while (h2->root.type == bfd_link_hash_indirect
5755 || h2->root.type == bfd_link_hash_warning)
5756 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5757 if (h2 == NULL || h2 != htab->tls_get_addr)
5760 /* OK, it checks out. Replace the call. */
5761 offset = rel[1].r_offset;
5762 insn1 = bfd_get_32 (output_bfd,
5763 contents + rel->r_offset - 2);
5764 if ((tls_mask & tls_gd) != 0)
5767 insn1 &= (1 << 26) - 1;
5768 insn1 |= 32 << 26; /* lwz */
5769 insn2 = 0x7c631214; /* add 3,3,2 */
5770 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5771 rel[1].r_addend = 0;
5772 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5773 + R_PPC_GOT_TPREL16);
5774 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5779 insn1 = 0x3c620000; /* addis 3,2,0 */
5780 insn2 = 0x38630000; /* addi 3,3,0 */
5783 /* Was an LD reloc. */
5785 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5787 r_type = R_PPC_TPREL16_HA;
5788 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5789 rel[1].r_info = ELF32_R_INFO (r_symndx,
5791 rel[1].r_offset += 2;
5792 rel[1].r_addend = rel->r_addend;
5794 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5795 bfd_put_32 (output_bfd, insn2, contents + offset);
5798 /* We changed the symbol on an LD reloc. Start over
5799 in order to get h, sym, sec etc. right. */
5808 /* Handle other relocations that tweak non-addend part of insn. */
5815 /* Branch taken prediction relocations. */
5816 case R_PPC_ADDR14_BRTAKEN:
5817 case R_PPC_REL14_BRTAKEN:
5818 branch_bit = BRANCH_PREDICT_BIT;
5821 /* Branch not taken prediction relocations. */
5822 case R_PPC_ADDR14_BRNTAKEN:
5823 case R_PPC_REL14_BRNTAKEN:
5824 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5825 insn &= ~BRANCH_PREDICT_BIT;
5828 from = (rel->r_offset
5829 + input_section->output_offset
5830 + input_section->output_section->vma);
5832 /* Invert 'y' bit if not the default. */
5833 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5834 insn ^= BRANCH_PREDICT_BIT;
5836 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5840 addend = rel->r_addend;
5843 if (r_type < R_PPC_max)
5844 howto = ppc_elf_howto_table[r_type];
5848 (*_bfd_error_handler)
5849 (_("%B: unknown relocation type %d for symbol %s"),
5850 input_bfd, (int) r_type, sym_name);
5852 bfd_set_error (bfd_error_bad_value);
5858 case R_PPC_EMB_MRKREF:
5859 case R_PPC_GNU_VTINHERIT:
5860 case R_PPC_GNU_VTENTRY:
5863 /* GOT16 relocations. Like an ADDR16 using the symbol's
5864 address in the GOT as relocation value instead of the
5865 symbol's value itself. Also, create a GOT entry for the
5866 symbol and put the symbol value there. */
5867 case R_PPC_GOT_TLSGD16:
5868 case R_PPC_GOT_TLSGD16_LO:
5869 case R_PPC_GOT_TLSGD16_HI:
5870 case R_PPC_GOT_TLSGD16_HA:
5871 tls_type = TLS_TLS | TLS_GD;
5874 case R_PPC_GOT_TLSLD16:
5875 case R_PPC_GOT_TLSLD16_LO:
5876 case R_PPC_GOT_TLSLD16_HI:
5877 case R_PPC_GOT_TLSLD16_HA:
5878 tls_type = TLS_TLS | TLS_LD;
5881 case R_PPC_GOT_TPREL16:
5882 case R_PPC_GOT_TPREL16_LO:
5883 case R_PPC_GOT_TPREL16_HI:
5884 case R_PPC_GOT_TPREL16_HA:
5885 tls_type = TLS_TLS | TLS_TPREL;
5888 case R_PPC_GOT_DTPREL16:
5889 case R_PPC_GOT_DTPREL16_LO:
5890 case R_PPC_GOT_DTPREL16_HI:
5891 case R_PPC_GOT_DTPREL16_HA:
5892 tls_type = TLS_TLS | TLS_DTPREL;
5896 case R_PPC_GOT16_LO:
5897 case R_PPC_GOT16_HI:
5898 case R_PPC_GOT16_HA:
5901 /* Relocation is to the entry for this symbol in the global
5907 if (htab->got == NULL)
5911 if (tls_type == (TLS_TLS | TLS_LD)
5913 || !h->def_dynamic))
5914 offp = &htab->tlsld_got.offset;
5918 dyn = htab->elf.dynamic_sections_created;
5919 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5921 && SYMBOL_REFERENCES_LOCAL (info, h)))
5922 /* This is actually a static link, or it is a
5923 -Bsymbolic link and the symbol is defined
5924 locally, or the symbol was forced to be local
5925 because of a version file. */
5930 unresolved_reloc = FALSE;
5932 offp = &h->got.offset;
5936 if (local_got_offsets == NULL)
5938 offp = &local_got_offsets[r_symndx];
5941 /* The offset must always be a multiple of 4. We use the
5942 least significant bit to record whether we have already
5943 processed this entry. */
5949 unsigned int tls_m = (tls_mask
5950 & (TLS_LD | TLS_GD | TLS_DTPREL
5951 | TLS_TPREL | TLS_TPRELGD));
5953 if (offp == &htab->tlsld_got.offset)
5959 /* We might have multiple got entries for this sym.
5960 Initialize them all. */
5965 if ((tls_m & TLS_LD) != 0)
5967 tls_ty = TLS_TLS | TLS_LD;
5970 else if ((tls_m & TLS_GD) != 0)
5972 tls_ty = TLS_TLS | TLS_GD;
5975 else if ((tls_m & TLS_DTPREL) != 0)
5977 tls_ty = TLS_TLS | TLS_DTPREL;
5978 tls_m &= ~TLS_DTPREL;
5980 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5982 tls_ty = TLS_TLS | TLS_TPREL;
5986 /* Generate relocs for the dynamic linker. */
5987 if ((info->shared || indx != 0)
5989 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5990 || h->root.type != bfd_link_hash_undefweak))
5992 outrel.r_offset = (htab->got->output_section->vma
5993 + htab->got->output_offset
5995 outrel.r_addend = 0;
5996 if (tls_ty & (TLS_LD | TLS_GD))
5998 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5999 if (tls_ty == (TLS_TLS | TLS_GD))
6001 loc = htab->relgot->contents;
6002 loc += (htab->relgot->reloc_count++
6003 * sizeof (Elf32_External_Rela));
6004 bfd_elf32_swap_reloca_out (output_bfd,
6006 outrel.r_offset += 4;
6008 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6011 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6012 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6013 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6014 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6016 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6018 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6021 outrel.r_addend += relocation;
6022 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6023 outrel.r_addend -= htab->elf.tls_sec->vma;
6025 loc = htab->relgot->contents;
6026 loc += (htab->relgot->reloc_count++
6027 * sizeof (Elf32_External_Rela));
6028 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6031 /* Init the .got section contents if we're not
6032 emitting a reloc. */
6035 bfd_vma value = relocation;
6037 if (tls_ty == (TLS_TLS | TLS_LD))
6039 else if (tls_ty != 0)
6041 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6042 if (tls_ty == (TLS_TLS | TLS_TPREL))
6043 value += DTP_OFFSET - TP_OFFSET;
6045 if (tls_ty == (TLS_TLS | TLS_GD))
6047 bfd_put_32 (output_bfd, value,
6048 htab->got->contents + off + 4);
6052 bfd_put_32 (output_bfd, value,
6053 htab->got->contents + off);
6057 if (tls_ty & (TLS_LD | TLS_GD))
6066 if (off >= (bfd_vma) -2)
6069 if ((tls_type & TLS_TLS) != 0)
6071 if (tls_type != (TLS_TLS | TLS_LD))
6073 if ((tls_mask & TLS_LD) != 0
6075 || !h->def_dynamic))
6077 if (tls_type != (TLS_TLS | TLS_GD))
6079 if ((tls_mask & TLS_GD) != 0)
6081 if (tls_type != (TLS_TLS | TLS_DTPREL))
6083 if ((tls_mask & TLS_DTPREL) != 0)
6090 relocation = htab->got->output_offset + off;
6091 relocation -= htab->elf.hgot->root.u.def.value;
6093 /* Addends on got relocations don't make much sense.
6094 x+off@got is actually x@got+off, and since the got is
6095 generated by a hash table traversal, the value in the
6096 got at entry m+n bears little relation to the entry m. */
6098 (*_bfd_error_handler)
6099 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6102 (long) rel->r_offset,
6108 /* Relocations that need no special processing. */
6109 case R_PPC_LOCAL24PC:
6110 /* It makes no sense to point a local relocation
6111 at a symbol not in this object. */
6112 if (unresolved_reloc)
6114 if (! (*info->callbacks->undefined_symbol) (info,
6115 h->root.root.string,
6125 case R_PPC_DTPREL16:
6126 case R_PPC_DTPREL16_LO:
6127 case R_PPC_DTPREL16_HI:
6128 case R_PPC_DTPREL16_HA:
6129 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6132 /* Relocations that may need to be propagated if this is a shared
6135 case R_PPC_TPREL16_LO:
6136 case R_PPC_TPREL16_HI:
6137 case R_PPC_TPREL16_HA:
6138 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6139 /* The TPREL16 relocs shouldn't really be used in shared
6140 libs as they will result in DT_TEXTREL being set, but
6141 support them anyway. */
6145 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6148 case R_PPC_DTPREL32:
6149 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6152 case R_PPC_DTPMOD32:
6158 case R_PPC_REL16_LO:
6159 case R_PPC_REL16_HI:
6160 case R_PPC_REL16_HA:
6166 case R_PPC_REL14_BRTAKEN:
6167 case R_PPC_REL14_BRNTAKEN:
6168 /* If these relocations are not to a named symbol, they can be
6169 handled right here, no need to bother the dynamic linker. */
6170 if (SYMBOL_REFERENCES_LOCAL (info, h)
6171 || h == htab->elf.hgot)
6175 /* Relocations that always need to be propagated if this is a shared
6180 case R_PPC_ADDR16_LO:
6181 case R_PPC_ADDR16_HI:
6182 case R_PPC_ADDR16_HA:
6184 case R_PPC_ADDR14_BRTAKEN:
6185 case R_PPC_ADDR14_BRNTAKEN:
6188 /* r_symndx will be zero only for relocs against symbols
6189 from removed linkonce sections, or sections discarded by
6196 if ((input_section->flags & SEC_ALLOC) == 0)
6202 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6203 || h->root.type != bfd_link_hash_undefweak)
6204 && (MUST_BE_DYN_RELOC (r_type)
6205 || !SYMBOL_CALLS_LOCAL (info, h)))
6206 || (ELIMINATE_COPY_RELOCS
6212 && !h->def_regular))
6217 fprintf (stderr, "ppc_elf_relocate_section needs to "
6218 "create relocation for %s\n",
6219 (h && h->root.root.string
6220 ? h->root.root.string : "<unknown>"));
6223 /* When generating a shared object, these relocations
6224 are copied into the output file to be resolved at run
6230 name = (bfd_elf_string_from_elf_section
6232 elf_elfheader (input_bfd)->e_shstrndx,
6233 elf_section_data (input_section)->rel_hdr.sh_name));
6237 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6238 && strcmp (bfd_get_section_name (input_bfd,
6242 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6243 BFD_ASSERT (sreloc != NULL);
6249 _bfd_elf_section_offset (output_bfd, info, input_section,
6251 if (outrel.r_offset == (bfd_vma) -1
6252 || outrel.r_offset == (bfd_vma) -2)
6253 skip = (int) outrel.r_offset;
6254 outrel.r_offset += (input_section->output_section->vma
6255 + input_section->output_offset);
6258 memset (&outrel, 0, sizeof outrel);
6259 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6261 unresolved_reloc = FALSE;
6262 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6263 outrel.r_addend = rel->r_addend;
6267 outrel.r_addend = relocation + rel->r_addend;
6269 if (r_type == R_PPC_ADDR32)
6270 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6275 if (bfd_is_abs_section (sec))
6277 else if (sec == NULL || sec->owner == NULL)
6279 bfd_set_error (bfd_error_bad_value);
6286 /* We are turning this relocation into one
6287 against a section symbol. It would be
6288 proper to subtract the symbol's value,
6289 osec->vma, from the emitted reloc addend,
6290 but ld.so expects buggy relocs. */
6291 osec = sec->output_section;
6292 indx = elf_section_data (osec)->dynindx;
6293 BFD_ASSERT (indx > 0);
6296 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6297 indx, osec->name, osec->flags,
6298 h->root.root.string);
6302 outrel.r_info = ELF32_R_INFO (indx, r_type);
6306 loc = sreloc->contents;
6307 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6308 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6313 /* This reloc will be computed at runtime. We clear the memory
6314 so that it contains predictable value. */
6316 && ((input_section->flags & SEC_ALLOC) != 0
6317 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6319 relocation = howto->pc_relative ? outrel.r_offset : 0;
6326 case R_PPC_RELAX32PC_PLT:
6327 case R_PPC_RELAX32_PLT:
6329 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6331 if (htab->plt_type == PLT_NEW)
6332 relocation = (htab->glink->output_section->vma
6333 + htab->glink->output_offset
6334 + ent->glink_offset);
6336 relocation = (htab->plt->output_section->vma
6337 + htab->plt->output_offset
6341 if (r_type == R_PPC_RELAX32_PLT)
6345 case R_PPC_RELAX32PC:
6346 relocation -= (input_section->output_section->vma
6347 + input_section->output_offset
6348 + rel->r_offset - 4);
6357 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6358 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6360 /* We're clearing the bits for R_PPC_ADDR16_HA
6361 and R_PPC_ADDR16_LO here. */
6365 /* t0 is HA, t1 is LO */
6366 relocation += addend;
6367 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6368 t1 |= relocation & 0xffff;
6370 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6371 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6375 /* Indirect .sdata relocation. */
6376 case R_PPC_EMB_SDAI16:
6377 BFD_ASSERT (htab->sdata[0].section != NULL);
6379 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6380 h, relocation, rel);
6383 /* Indirect .sdata2 relocation. */
6384 case R_PPC_EMB_SDA2I16:
6385 BFD_ASSERT (htab->sdata[1].section != NULL);
6387 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6388 h, relocation, rel);
6391 /* Handle the TOC16 reloc. We want to use the offset within the .got
6392 section, not the actual VMA. This is appropriate when generating
6393 an embedded ELF object, for which the .got section acts like the
6394 AIX .toc section. */
6395 case R_PPC_TOC16: /* phony GOT16 relocations */
6396 BFD_ASSERT (sec != NULL);
6397 BFD_ASSERT (bfd_is_und_section (sec)
6398 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6399 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6401 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6404 case R_PPC_PLTREL24:
6405 /* Relocation is to the entry for this symbol in the
6406 procedure linkage table. */
6408 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6412 || htab->plt == NULL)
6414 /* We didn't make a PLT entry for this symbol. This
6415 happens when statically linking PIC code, or when
6416 using -Bsymbolic. */
6420 unresolved_reloc = FALSE;
6421 if (htab->plt_type == PLT_NEW)
6422 relocation = (htab->glink->output_section->vma
6423 + htab->glink->output_offset
6424 + ent->glink_offset);
6426 relocation = (htab->plt->output_section->vma
6427 + htab->plt->output_offset
6432 /* Relocate against _SDA_BASE_. */
6433 case R_PPC_SDAREL16:
6436 struct elf_link_hash_entry *sh;
6438 BFD_ASSERT (sec != NULL);
6439 name = bfd_get_section_name (abfd, sec->output_section);
6440 if (! ((strncmp (name, ".sdata", 6) == 0
6441 && (name[6] == 0 || name[6] == '.'))
6442 || (strncmp (name, ".sbss", 5) == 0
6443 && (name[5] == 0 || name[5] == '.'))))
6445 (*_bfd_error_handler)
6446 (_("%B: the target (%s) of a %s relocation is "
6447 "in the wrong output section (%s)"),
6453 sh = htab->sdata[0].sym;
6454 addend -= (sh->root.u.def.value
6455 + sh->root.u.def.section->output_offset
6456 + sh->root.u.def.section->output_section->vma);
6460 /* Relocate against _SDA2_BASE_. */
6461 case R_PPC_EMB_SDA2REL:
6464 struct elf_link_hash_entry *sh;
6466 BFD_ASSERT (sec != NULL);
6467 name = bfd_get_section_name (abfd, sec->output_section);
6468 if (! (strncmp (name, ".sdata2", 7) == 0
6469 || strncmp (name, ".sbss2", 6) == 0))
6471 (*_bfd_error_handler)
6472 (_("%B: the target (%s) of a %s relocation is "
6473 "in the wrong output section (%s)"),
6479 bfd_set_error (bfd_error_bad_value);
6483 sh = htab->sdata[1].sym;
6484 addend -= (sh->root.u.def.value
6485 + sh->root.u.def.section->output_offset
6486 + sh->root.u.def.section->output_section->vma);
6490 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6491 case R_PPC_EMB_SDA21:
6492 case R_PPC_EMB_RELSDA:
6496 struct elf_link_hash_entry *sh;
6498 BFD_ASSERT (sec != NULL);
6499 name = bfd_get_section_name (abfd, sec->output_section);
6500 if (((strncmp (name, ".sdata", 6) == 0
6501 && (name[6] == 0 || name[6] == '.'))
6502 || (strncmp (name, ".sbss", 5) == 0
6503 && (name[5] == 0 || name[5] == '.'))))
6506 sh = htab->sdata[0].sym;
6507 addend -= (sh->root.u.def.value
6508 + sh->root.u.def.section->output_offset
6509 + sh->root.u.def.section->output_section->vma);
6512 else if (strncmp (name, ".sdata2", 7) == 0
6513 || strncmp (name, ".sbss2", 6) == 0)
6516 sh = htab->sdata[1].sym;
6517 addend -= (sh->root.u.def.value
6518 + sh->root.u.def.section->output_offset
6519 + sh->root.u.def.section->output_section->vma);
6522 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6523 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6530 (*_bfd_error_handler)
6531 (_("%B: the target (%s) of a %s relocation is "
6532 "in the wrong output section (%s)"),
6538 bfd_set_error (bfd_error_bad_value);
6543 if (r_type == R_PPC_EMB_SDA21)
6544 { /* fill in register field */
6545 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6546 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6547 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6552 /* Relocate against the beginning of the section. */
6554 case R_PPC_SECTOFF_LO:
6555 case R_PPC_SECTOFF_HI:
6556 case R_PPC_SECTOFF_HA:
6557 BFD_ASSERT (sec != NULL);
6558 addend -= sec->output_section->vma;
6561 /* Negative relocations. */
6562 case R_PPC_EMB_NADDR32:
6563 case R_PPC_EMB_NADDR16:
6564 case R_PPC_EMB_NADDR16_LO:
6565 case R_PPC_EMB_NADDR16_HI:
6566 case R_PPC_EMB_NADDR16_HA:
6567 addend -= 2 * relocation;
6571 case R_PPC_GLOB_DAT:
6572 case R_PPC_JMP_SLOT:
6573 case R_PPC_RELATIVE:
6575 case R_PPC_PLTREL32:
6576 case R_PPC_PLT16_LO:
6577 case R_PPC_PLT16_HI:
6578 case R_PPC_PLT16_HA:
6580 case R_PPC_EMB_RELSEC16:
6581 case R_PPC_EMB_RELST_LO:
6582 case R_PPC_EMB_RELST_HI:
6583 case R_PPC_EMB_RELST_HA:
6584 case R_PPC_EMB_BIT_FLD:
6585 (*_bfd_error_handler)
6586 (_("%B: relocation %s is not yet supported for symbol %s."),
6591 bfd_set_error (bfd_error_invalid_operation);
6596 /* Do any further special processing. */
6602 case R_PPC_ADDR16_HA:
6603 case R_PPC_REL16_HA:
6604 case R_PPC_GOT16_HA:
6605 case R_PPC_PLT16_HA:
6606 case R_PPC_SECTOFF_HA:
6607 case R_PPC_TPREL16_HA:
6608 case R_PPC_DTPREL16_HA:
6609 case R_PPC_GOT_TLSGD16_HA:
6610 case R_PPC_GOT_TLSLD16_HA:
6611 case R_PPC_GOT_TPREL16_HA:
6612 case R_PPC_GOT_DTPREL16_HA:
6613 case R_PPC_EMB_NADDR16_HA:
6614 case R_PPC_EMB_RELST_HA:
6615 /* It's just possible that this symbol is a weak symbol
6616 that's not actually defined anywhere. In that case,
6617 'sec' would be NULL, and we should leave the symbol
6618 alone (it will be set to zero elsewhere in the link). */
6620 /* Add 0x10000 if sign bit in 0:15 is set.
6621 Bits 0:15 are not used. */
6627 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6628 "offset = %ld, addend = %ld\n",
6633 (long) rel->r_offset,
6637 if (unresolved_reloc
6638 && !((input_section->flags & SEC_DEBUGGING) != 0
6641 (*_bfd_error_handler)
6642 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6645 (long) rel->r_offset,
6651 r = _bfd_final_link_relocate (howto,
6659 if (r != bfd_reloc_ok)
6661 if (r == bfd_reloc_overflow)
6666 && h->root.type == bfd_link_hash_undefweak
6667 && howto->pc_relative)
6669 /* Assume this is a call protected by other code that
6670 detect the symbol is undefined. If this is the case,
6671 we can safely ignore the overflow. If not, the
6672 program is hosed anyway, and a little warning isn't
6678 if (! (*info->callbacks->reloc_overflow) (info,
6679 (h ? &h->root : NULL),
6690 (*_bfd_error_handler)
6691 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6692 input_bfd, input_section,
6693 (long) rel->r_offset, howto->name, sym_name, (int) r);
6700 fprintf (stderr, "\n");
6706 #define PPC_LO(v) ((v) & 0xffff)
6707 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6708 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6710 /* Finish up dynamic symbol handling. We set the contents of various
6711 dynamic sections here. */
6714 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6715 struct bfd_link_info *info,
6716 struct elf_link_hash_entry *h,
6717 Elf_Internal_Sym *sym)
6719 struct ppc_elf_link_hash_table *htab;
6720 struct plt_entry *ent;
6721 bfd_boolean doneone;
6724 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6725 h->root.root.string);
6728 htab = ppc_elf_hash_table (info);
6729 BFD_ASSERT (htab->elf.dynobj != NULL);
6732 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6733 if (ent->plt.offset != (bfd_vma) -1)
6737 Elf_Internal_Rela rela;
6739 bfd_vma reloc_index;
6741 if (htab->plt_type == PLT_NEW)
6742 reloc_index = ent->plt.offset / 4;
6745 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6746 / htab->plt_slot_size);
6747 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6748 && htab->plt_type == PLT_OLD)
6749 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6752 /* This symbol has an entry in the procedure linkage table.
6754 if (htab->plt_type == PLT_VXWORKS)
6757 const bfd_vma *plt_entry;
6759 /* The first three entries in .got.plt are reserved. */
6760 got_offset = (reloc_index + 3) * 4;
6762 /* Use the right PLT. */
6763 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6764 : ppc_elf_vxworks_plt_entry;
6766 /* Fill in the .plt on VxWorks. */
6769 bfd_vma got_offset_hi = (got_offset >> 16)
6770 + ((got_offset & 0x8000) >> 15);
6772 bfd_put_32 (output_bfd,
6773 plt_entry[0] | (got_offset_hi & 0xffff),
6774 htab->plt->contents + ent->plt.offset + 0);
6775 bfd_put_32 (output_bfd,
6776 plt_entry[1] | (got_offset & 0xffff),
6777 htab->plt->contents + ent->plt.offset + 4);
6783 + htab->elf.hgot->root.u.def.value
6784 + htab->elf.hgot->root.u.def.section->output_offset
6785 + htab->elf.hgot->root.u.def.section->output_section->vma);
6786 bfd_vma got_loc_hi = (got_loc >> 16)
6787 + ((got_loc & 0x8000) >> 15);
6789 bfd_put_32 (output_bfd,
6790 plt_entry[0] | (got_loc_hi & 0xffff),
6791 htab->plt->contents + ent->plt.offset + 0);
6792 bfd_put_32 (output_bfd,
6793 plt_entry[1] | (got_loc & 0xffff),
6794 htab->plt->contents + ent->plt.offset + 4);
6797 bfd_put_32 (output_bfd, plt_entry[2],
6798 htab->plt->contents + ent->plt.offset + 8);
6799 bfd_put_32 (output_bfd, plt_entry[3],
6800 htab->plt->contents + ent->plt.offset + 12);
6802 /* This instruction is an immediate load. The value loaded is
6803 the byte offset of the R_PPC_JMP_SLOT relocation from the
6804 start of the .rela.plt section. The value is stored in the
6805 low-order 16 bits of the load instruction. */
6806 /* NOTE: It appears that this is now an index rather than a
6807 prescaled offset. */
6808 bfd_put_32 (output_bfd,
6809 plt_entry[4] | reloc_index,
6810 htab->plt->contents + ent->plt.offset + 16);
6811 /* This instruction is a PC-relative branch whose target is
6812 the start of the PLT section. The address of this branch
6813 instruction is 20 bytes beyond the start of this PLT entry.
6814 The address is encoded in bits 6-29, inclusive. The value
6815 stored is right-shifted by two bits, permitting a 26-bit
6817 bfd_put_32 (output_bfd,
6819 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6820 htab->plt->contents + ent->plt.offset + 20);
6821 bfd_put_32 (output_bfd, plt_entry[6],
6822 htab->plt->contents + ent->plt.offset + 24);
6823 bfd_put_32 (output_bfd, plt_entry[7],
6824 htab->plt->contents + ent->plt.offset + 28);
6826 /* Fill in the GOT entry corresponding to this PLT slot with
6827 the address immediately after the the "bctr" instruction
6828 in this PLT entry. */
6829 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6830 + htab->plt->output_offset
6831 + ent->plt.offset + 16),
6832 htab->sgotplt->contents + got_offset);
6836 /* Fill in a couple of entries in .rela.plt.unloaded. */
6837 loc = htab->srelplt2->contents
6838 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6839 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6840 * sizeof (Elf32_External_Rela));
6842 /* Provide the @ha relocation for the first instruction. */
6843 rela.r_offset = (htab->plt->output_section->vma
6844 + htab->plt->output_offset
6845 + ent->plt.offset + 2);
6846 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6848 rela.r_addend = got_offset;
6849 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6850 loc += sizeof (Elf32_External_Rela);
6852 /* Provide the @l relocation for the second instruction. */
6853 rela.r_offset = (htab->plt->output_section->vma
6854 + htab->plt->output_offset
6855 + ent->plt.offset + 6);
6856 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6858 rela.r_addend = got_offset;
6859 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6860 loc += sizeof (Elf32_External_Rela);
6862 /* Provide a relocation for the GOT entry corresponding to this
6863 PLT slot. Point it at the middle of the .plt entry. */
6864 rela.r_offset = (htab->sgotplt->output_section->vma
6865 + htab->sgotplt->output_offset
6867 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
6869 rela.r_addend = ent->plt.offset + 16;
6870 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6873 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6874 In particular, the offset for the relocation is not the
6875 address of the PLT entry for this function, as specified
6876 by the ABI. Instead, the offset is set to the address of
6877 the GOT slot for this function. See EABI 4.4.4.1. */
6878 rela.r_offset = (htab->sgotplt->output_section->vma
6879 + htab->sgotplt->output_offset
6885 rela.r_offset = (htab->plt->output_section->vma
6886 + htab->plt->output_offset
6888 if (htab->plt_type == PLT_OLD)
6890 /* We don't need to fill in the .plt. The ppc dynamic
6891 linker will fill it in. */
6895 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6896 + htab->glink->output_section->vma
6897 + htab->glink->output_offset);
6898 bfd_put_32 (output_bfd, val,
6899 htab->plt->contents + ent->plt.offset);
6903 /* Fill in the entry in the .rela.plt section. */
6904 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6907 loc = (htab->relplt->contents
6908 + reloc_index * sizeof (Elf32_External_Rela));
6909 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6911 if (!h->def_regular)
6913 /* Mark the symbol as undefined, rather than as defined in
6914 the .plt section. Leave the value alone. */
6915 sym->st_shndx = SHN_UNDEF;
6916 /* If the symbol is weak, we do need to clear the value.
6917 Otherwise, the PLT entry would provide a definition for
6918 the symbol even if the symbol wasn't defined anywhere,
6919 and so the symbol would never be NULL. */
6920 if (!h->ref_regular_nonweak)
6926 if (htab->plt_type == PLT_NEW)
6931 plt = (ent->plt.offset
6932 + htab->plt->output_section->vma
6933 + htab->plt->output_offset);
6934 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6936 if (info->shared || info->pie)
6940 if (ent->addend >= 32768)
6942 + ent->sec->output_section->vma
6943 + ent->sec->output_offset);
6944 else if (htab->elf.hgot != NULL)
6945 got = (htab->elf.hgot->root.u.def.value
6946 + htab->elf.hgot->root.u.def.section->output_section->vma
6947 + htab->elf.hgot->root.u.def.section->output_offset);
6951 if (plt + 0x8000 < 0x10000)
6953 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6955 bfd_put_32 (output_bfd, MTCTR_11, p);
6957 bfd_put_32 (output_bfd, BCTR, p);
6959 bfd_put_32 (output_bfd, NOP, p);
6964 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6966 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6968 bfd_put_32 (output_bfd, MTCTR_11, p);
6970 bfd_put_32 (output_bfd, BCTR, p);
6976 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6978 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6980 bfd_put_32 (output_bfd, MTCTR_11, p);
6982 bfd_put_32 (output_bfd, BCTR, p);
6985 /* We only need one non-PIC glink stub. */
6996 Elf_Internal_Rela rela;
6999 /* This symbols needs a copy reloc. Set it up. */
7002 fprintf (stderr, ", copy");
7005 BFD_ASSERT (h->dynindx != -1);
7007 if (ppc_elf_hash_entry (h)->has_sda_refs)
7011 BFD_ASSERT (s != NULL);
7013 rela.r_offset = (h->root.u.def.value
7014 + h->root.u.def.section->output_section->vma
7015 + h->root.u.def.section->output_offset);
7016 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7018 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7019 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7023 fprintf (stderr, "\n");
7026 /* Mark some specially defined symbols as absolute. */
7027 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7028 || (!htab->is_vxworks
7029 && (h == htab->elf.hgot
7030 || strcmp (h->root.root.string,
7031 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7032 sym->st_shndx = SHN_ABS;
7037 static enum elf_reloc_type_class
7038 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7040 switch (ELF32_R_TYPE (rela->r_info))
7042 case R_PPC_RELATIVE:
7043 return reloc_class_relative;
7046 case R_PPC_JMP_SLOT:
7047 return reloc_class_plt;
7049 return reloc_class_copy;
7051 return reloc_class_normal;
7055 /* Finish up the dynamic sections. */
7058 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7059 struct bfd_link_info *info)
7063 struct ppc_elf_link_hash_table *htab;
7068 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7071 htab = ppc_elf_hash_table (info);
7072 dynobj = elf_hash_table (info)->dynobj;
7073 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7074 if (htab->is_vxworks)
7075 splt = bfd_get_section_by_name (dynobj, ".plt");
7080 if (htab->elf.hgot != NULL)
7081 got = (htab->elf.hgot->root.u.def.value
7082 + htab->elf.hgot->root.u.def.section->output_section->vma
7083 + htab->elf.hgot->root.u.def.section->output_offset);
7085 if (htab->elf.dynamic_sections_created)
7087 Elf32_External_Dyn *dyncon, *dynconend;
7089 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7091 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7092 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7093 for (; dyncon < dynconend; dyncon++)
7095 Elf_Internal_Dyn dyn;
7098 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7103 if (htab->is_vxworks)
7107 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7111 dyn.d_un.d_val = htab->relplt->size;
7116 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7120 dyn.d_un.d_ptr = got;
7124 if (htab->is_vxworks)
7127 dyn.d_un.d_ptr -= htab->relplt->size;
7136 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7140 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7141 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7142 if (htab->got != NULL)
7144 unsigned char *p = htab->got->contents;
7147 p += htab->elf.hgot->root.u.def.value;
7148 if (htab->plt_type == PLT_OLD)
7149 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7153 val = sdyn->output_section->vma + sdyn->output_offset;
7154 bfd_put_32 (output_bfd, val, p);
7156 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7159 /* Fill in the first entry in the VxWorks procedure linkage table. */
7160 if (splt && splt->size > 0)
7162 /* Use the right PLT. */
7163 static const bfd_vma *plt_entry = NULL;
7164 plt_entry = info->shared ?
7165 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7170 (htab->elf.hgot->root.u.def.section->output_section->vma
7171 + htab->elf.hgot->root.u.def.section->output_offset
7172 + htab->elf.hgot->root.u.def.value);
7173 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7175 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7176 splt->contents + 0);
7177 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7178 splt->contents + 4);
7182 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7183 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7185 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7186 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7187 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7188 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7189 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7190 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7194 Elf_Internal_Rela rela;
7197 loc = htab->srelplt2->contents;
7199 /* Output the @ha relocation for the first instruction. */
7200 rela.r_offset = (htab->plt->output_section->vma
7201 + htab->plt->output_offset
7203 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7205 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7206 loc += sizeof (Elf32_External_Rela);
7208 /* Output the @l relocation for the second instruction. */
7209 rela.r_offset = (htab->plt->output_section->vma
7210 + htab->plt->output_offset
7212 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7214 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7215 loc += sizeof (Elf32_External_Rela);
7217 /* Fix up the remaining relocations. They may have the wrong
7218 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7219 in which symbols were output. */
7220 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7222 Elf_Internal_Rela rel;
7224 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7225 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7226 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7227 loc += sizeof (Elf32_External_Rela);
7229 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7230 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7231 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7232 loc += sizeof (Elf32_External_Rela);
7234 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7235 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7236 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7237 loc += sizeof (Elf32_External_Rela);
7242 if (htab->glink != NULL && htab->glink->contents != NULL)
7245 unsigned char *endp;
7250 * PIC glink code is the following:
7252 * # ith PLT code stub.
7253 * addis 11,30,(plt+(i-1)*4-got)@ha
7254 * lwz 11,(plt+(i-1)*4-got)@l(11)
7258 * # A table of branches, one for each plt entry.
7259 * # The idea is that the plt call stub loads ctr (and r11) with these
7260 * # addresses, so (r11 - res_0) gives the plt index * 4.
7261 * res_0: b PLTresolve
7262 * res_1: b PLTresolve
7264 * # Some number of entries towards the end can be nops
7270 * addis 11,11,(1f-res_0)@ha
7273 * 1: addi 11,11,(1b-res_0)@l
7276 * sub 11,11,12 # r11 = index * 4
7277 * addis 12,12,(got+4-1b)@ha
7278 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7279 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7282 * add 11,0,11 # r11 = index * 12 = reloc offset.
7285 static const unsigned int pic_plt_resolve[] =
7305 static const unsigned int plt_resolve[] =
7325 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7327 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7330 /* Build the branch table, one for each plt entry (less one),
7331 and perhaps some padding. */
7332 p = htab->glink->contents;
7333 p += htab->glink_pltresolve;
7334 endp = htab->glink->contents;
7335 endp += htab->glink->size - GLINK_PLTRESOLVE;
7336 while (p < endp - 8 * 4)
7338 bfd_put_32 (output_bfd, B + endp - p, p);
7343 bfd_put_32 (output_bfd, NOP, p);
7347 res0 = (htab->glink_pltresolve
7348 + htab->glink->output_section->vma
7349 + htab->glink->output_offset);
7351 /* Last comes the PLTresolve stub. */
7352 if (info->shared || info->pie)
7356 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7358 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7361 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7363 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7364 + htab->glink->output_section->vma
7365 + htab->glink->output_offset);
7367 bfd_put_32 (output_bfd,
7368 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7369 bfd_put_32 (output_bfd,
7370 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7371 bfd_put_32 (output_bfd,
7372 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7373 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7375 bfd_put_32 (output_bfd,
7376 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7377 bfd_put_32 (output_bfd,
7378 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7382 bfd_put_32 (output_bfd,
7383 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7384 bfd_put_32 (output_bfd,
7385 LWZ_12_12 + 4, p + 9*4);
7390 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7392 bfd_put_32 (output_bfd, plt_resolve[i], p);
7395 p -= 4 * ARRAY_SIZE (plt_resolve);
7397 bfd_put_32 (output_bfd,
7398 LIS_12 + PPC_HA (got + 4), p + 0*4);
7399 bfd_put_32 (output_bfd,
7400 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7401 bfd_put_32 (output_bfd,
7402 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7403 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7405 bfd_put_32 (output_bfd,
7406 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7407 bfd_put_32 (output_bfd,
7408 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7412 bfd_put_32 (output_bfd,
7413 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7414 bfd_put_32 (output_bfd,
7415 LWZ_12_12 + 4, p + 6*4);
7423 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7424 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7425 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7426 #define TARGET_BIG_NAME "elf32-powerpc"
7427 #define ELF_ARCH bfd_arch_powerpc
7428 #define ELF_MACHINE_CODE EM_PPC
7429 #ifdef __QNXTARGET__
7430 #define ELF_MAXPAGESIZE 0x1000
7432 #define ELF_MAXPAGESIZE 0x10000
7434 #define ELF_MINPAGESIZE 0x1000
7435 #define elf_info_to_howto ppc_elf_info_to_howto
7437 #ifdef EM_CYGNUS_POWERPC
7438 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7442 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7445 #define elf_backend_plt_not_loaded 1
7446 #define elf_backend_can_gc_sections 1
7447 #define elf_backend_can_refcount 1
7448 #define elf_backend_rela_normal 1
7450 #define bfd_elf32_mkobject ppc_elf_mkobject
7451 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7452 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7453 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7454 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7455 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7457 #define elf_backend_object_p ppc_elf_object_p
7458 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7459 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7460 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7461 #define elf_backend_relocate_section ppc_elf_relocate_section
7462 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7463 #define elf_backend_check_relocs ppc_elf_check_relocs
7464 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7465 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7466 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7467 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7468 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7469 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7470 #define elf_backend_fake_sections ppc_elf_fake_sections
7471 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7472 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7473 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7474 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7475 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7476 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7477 #define elf_backend_write_section ppc_elf_write_section
7478 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7479 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7480 #define elf_backend_action_discarded ppc_elf_action_discarded
7482 #include "elf32-target.h"
7484 /* VxWorks Target */
7486 #undef TARGET_LITTLE_SYM
7487 #undef TARGET_LITTLE_NAME
7489 #undef TARGET_BIG_SYM
7490 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7491 #undef TARGET_BIG_NAME
7492 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7494 /* VxWorks uses the elf default section flags for .plt. */
7495 static const struct bfd_elf_special_section *
7496 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7498 if (sec->name == NULL)
7501 if (strcmp (sec->name, ".plt") == 0)
7502 return _bfd_elf_get_sec_type_attr (abfd, sec);
7504 return ppc_elf_get_sec_type_attr (abfd, sec);
7507 /* Like ppc_elf_link_hash_table_create, but overrides
7508 appropriately for VxWorks. */
7509 static struct bfd_link_hash_table *
7510 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7512 struct bfd_link_hash_table *ret;
7514 ret = ppc_elf_link_hash_table_create (abfd);
7517 struct ppc_elf_link_hash_table *htab
7518 = (struct ppc_elf_link_hash_table *)ret;
7519 htab->is_vxworks = 1;
7520 htab->plt_type = PLT_VXWORKS;
7521 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7522 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7523 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7528 /* Tweak magic VxWorks symbols as they are loaded. */
7530 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7531 struct bfd_link_info *info,
7532 Elf_Internal_Sym *sym,
7533 const char **namep ATTRIBUTE_UNUSED,
7534 flagword *flagsp ATTRIBUTE_UNUSED,
7538 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7542 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7546 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7548 ppc_elf_final_write_processing(abfd, linker);
7549 elf_vxworks_final_write_processing(abfd, linker);
7552 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7554 #undef elf_backend_want_plt_sym
7555 #define elf_backend_want_plt_sym 1
7556 #undef elf_backend_want_got_plt
7557 #define elf_backend_want_got_plt 1
7558 #undef elf_backend_got_symbol_offset
7559 #define elf_backend_got_symbol_offset 0
7560 #undef elf_backend_plt_not_loaded
7561 #define elf_backend_plt_not_loaded 0
7562 #undef elf_backend_plt_readonly
7563 #define elf_backend_plt_readonly 1
7564 #undef elf_backend_got_header_size
7565 #define elf_backend_got_header_size 12
7567 #undef bfd_elf32_bfd_link_hash_table_create
7568 #define bfd_elf32_bfd_link_hash_table_create \
7569 ppc_elf_vxworks_link_hash_table_create
7570 #undef elf_backend_add_symbol_hook
7571 #define elf_backend_add_symbol_hook \
7572 ppc_elf_vxworks_add_symbol_hook
7573 #undef elf_backend_link_output_symbol_hook
7574 #define elf_backend_link_output_symbol_hook \
7575 elf_vxworks_link_output_symbol_hook
7576 #undef elf_backend_final_write_processing
7577 #define elf_backend_final_write_processing \
7578 ppc_elf_vxworks_final_write_processing
7579 #undef elf_backend_get_sec_type_attr
7580 #define elf_backend_get_sec_type_attr \
7581 ppc_elf_vxworks_get_sec_type_attr
7582 #undef elf_backend_emit_relocs
7583 #define elf_backend_emit_relocs \
7584 elf_vxworks_emit_relocs
7587 #define elf32_bed ppc_elf_vxworks_bed
7589 #include "elf32-target.h"
projects / platform / upstream / binutils.git / blob