1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 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. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 /* RELA relocations are used here. */
40 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc_elf_unhandled_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 /* Branch prediction bit for branch taken relocs. */
46 #define BRANCH_PREDICT_BIT 0x200000
47 /* Mask to set RA in memory instructions. */
48 #define RA_REGISTER_MASK 0x001f0000
49 /* Value to shift register by to insert RA. */
50 #define RA_REGISTER_SHIFT 16
52 /* The name of the dynamic interpreter. This is put in the .interp
54 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56 /* For old-style PLT. */
57 /* The number of single-slot PLT entries (the rest use two slots). */
58 #define PLT_NUM_SINGLE_ENTRIES 8192
60 /* For new-style .glink and .plt. */
61 #define GLINK_PLTRESOLVE 16*4
62 #define GLINK_ENTRY_SIZE 4*4
64 /* VxWorks uses its own plt layout, filled in by the static linker. */
66 /* The standard VxWorks PLT entry. */
67 #define VXWORKS_PLT_ENTRY_SIZE 32
68 static const bfd_vma ppc_elf_vxworks_plt_entry
69 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 0x3d800000, /* lis r12,0 */
72 0x818c0000, /* lwz r12,0(r12) */
73 0x7d8903a6, /* mtctr r12 */
74 0x4e800420, /* bctr */
75 0x39600000, /* li r11,0 */
76 0x48000000, /* b 14 <.PLT0resolve+0x4> */
80 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
81 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 0x3d9e0000, /* addis r12,r30,0 */
84 0x818c0000, /* lwz r12,0(r12) */
85 0x7d8903a6, /* mtctr r12 */
86 0x4e800420, /* bctr */
87 0x39600000, /* li r11,0 */
88 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
93 /* The initial VxWorks PLT entry. */
94 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
95 static const bfd_vma ppc_elf_vxworks_plt0_entry
96 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 0x3d800000, /* lis r12,0 */
99 0x398c0000, /* addi r12,r12,0 */
100 0x800c0008, /* lwz r0,8(r12) */
101 0x7c0903a6, /* mtctr r0 */
102 0x818c0004, /* lwz r12,4(r12) */
103 0x4e800420, /* bctr */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
107 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
108 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 0x819e0008, /* lwz r12,8(r30) */
111 0x7d8903a6, /* mtctr r12 */
112 0x819e0004, /* lwz r12,4(r30) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
120 /* For executables, we have some additional relocations in
121 .rela.plt.unloaded, for the kernel loader. */
123 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
124 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
125 /* The number of relocations in the PLTResolve slot. */
126 #define VXWORKS_PLTRESOLVE_RELOCS 2
127 /* The number of relocations in the PLTResolve slot when when creating
129 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131 /* Some instructions. */
132 #define ADDIS_11_11 0x3d6b0000
133 #define ADDIS_11_30 0x3d7e0000
134 #define ADDIS_12_12 0x3d8c0000
135 #define ADDI_11_11 0x396b0000
136 #define ADD_0_11_11 0x7c0b5a14
137 #define ADD_11_0_11 0x7d605a14
139 #define BCL_20_31 0x429f0005
140 #define BCTR 0x4e800420
141 #define LIS_11 0x3d600000
142 #define LIS_12 0x3d800000
143 #define LWZU_0_12 0x840c0000
144 #define LWZ_0_12 0x800c0000
145 #define LWZ_11_11 0x816b0000
146 #define LWZ_11_30 0x817e0000
147 #define LWZ_12_12 0x818c0000
148 #define MFLR_0 0x7c0802a6
149 #define MFLR_12 0x7d8802a6
150 #define MTCTR_0 0x7c0903a6
151 #define MTCTR_11 0x7d6903a6
152 #define MTLR_0 0x7c0803a6
153 #define NOP 0x60000000
154 #define SUB_11_11_12 0x7d6c5850
156 /* Offset of tp and dtp pointers from start of TLS block. */
157 #define TP_OFFSET 0x7000
158 #define DTP_OFFSET 0x8000
160 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
162 static reloc_howto_type ppc_elf_howto_raw[] = {
163 /* This reloc does nothing. */
164 HOWTO (R_PPC_NONE, /* type */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
168 FALSE, /* pc_relative */
170 complain_overflow_bitfield, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_PPC_NONE", /* name */
173 FALSE, /* partial_inplace */
176 FALSE), /* pcrel_offset */
178 /* A standard 32 bit relocation. */
179 HOWTO (R_PPC_ADDR32, /* type */
181 2, /* size (0 = byte, 1 = short, 2 = long) */
183 FALSE, /* pc_relative */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC_ADDR32", /* name */
188 FALSE, /* partial_inplace */
190 0xffffffff, /* dst_mask */
191 FALSE), /* pcrel_offset */
193 /* An absolute 26 bit branch; the lower two bits must be zero.
194 FIXME: we don't check that, we just clear them. */
195 HOWTO (R_PPC_ADDR24, /* type */
197 2, /* size (0 = byte, 1 = short, 2 = long) */
199 FALSE, /* pc_relative */
201 complain_overflow_bitfield, /* complain_on_overflow */
202 bfd_elf_generic_reloc, /* special_function */
203 "R_PPC_ADDR24", /* name */
204 FALSE, /* partial_inplace */
206 0x3fffffc, /* dst_mask */
207 FALSE), /* pcrel_offset */
209 /* A standard 16 bit relocation. */
210 HOWTO (R_PPC_ADDR16, /* type */
212 1, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE, /* pc_relative */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR16", /* name */
219 FALSE, /* partial_inplace */
221 0xffff, /* dst_mask */
222 FALSE), /* pcrel_offset */
224 /* A 16 bit relocation without overflow. */
225 HOWTO (R_PPC_ADDR16_LO, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 FALSE, /* pc_relative */
231 complain_overflow_dont,/* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC_ADDR16_LO", /* name */
234 FALSE, /* partial_inplace */
236 0xffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
239 /* The high order 16 bits of an address. */
240 HOWTO (R_PPC_ADDR16_HI, /* type */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
244 FALSE, /* pc_relative */
246 complain_overflow_dont, /* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_PPC_ADDR16_HI", /* name */
249 FALSE, /* partial_inplace */
251 0xffff, /* dst_mask */
252 FALSE), /* pcrel_offset */
254 /* The high order 16 bits of an address, plus 1 if the contents of
255 the low 16 bits, treated as a signed number, is negative. */
256 HOWTO (R_PPC_ADDR16_HA, /* type */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE, /* pc_relative */
262 complain_overflow_dont, /* complain_on_overflow */
263 ppc_elf_addr16_ha_reloc, /* special_function */
264 "R_PPC_ADDR16_HA", /* name */
265 FALSE, /* partial_inplace */
267 0xffff, /* dst_mask */
268 FALSE), /* pcrel_offset */
270 /* An absolute 16 bit branch; the lower two bits must be zero.
271 FIXME: we don't check that, we just clear them. */
272 HOWTO (R_PPC_ADDR14, /* type */
274 2, /* size (0 = byte, 1 = short, 2 = long) */
276 FALSE, /* pc_relative */
278 complain_overflow_bitfield, /* complain_on_overflow */
279 bfd_elf_generic_reloc, /* special_function */
280 "R_PPC_ADDR14", /* name */
281 FALSE, /* partial_inplace */
283 0xfffc, /* dst_mask */
284 FALSE), /* pcrel_offset */
286 /* An absolute 16 bit branch, for which bit 10 should be set to
287 indicate that the branch is expected to be taken. The lower two
288 bits must be zero. */
289 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC_ADDR14_BRTAKEN",/* name */
298 FALSE, /* partial_inplace */
300 0xfffc, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 /* An absolute 16 bit branch, for which bit 10 should be set to
304 indicate that the branch is not expected to be taken. The lower
305 two bits must be zero. */
306 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_bitfield, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC_ADDR14_BRNTAKEN",/* name */
315 FALSE, /* partial_inplace */
317 0xfffc, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* A relative 26 bit branch; the lower two bits must be zero. */
321 HOWTO (R_PPC_REL24, /* type */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
325 TRUE, /* pc_relative */
327 complain_overflow_signed, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_PPC_REL24", /* name */
330 FALSE, /* partial_inplace */
332 0x3fffffc, /* dst_mask */
333 TRUE), /* pcrel_offset */
335 /* A relative 16 bit branch; the lower two bits must be zero. */
336 HOWTO (R_PPC_REL14, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 TRUE, /* pc_relative */
342 complain_overflow_signed, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_PPC_REL14", /* name */
345 FALSE, /* partial_inplace */
347 0xfffc, /* dst_mask */
348 TRUE), /* pcrel_offset */
350 /* A relative 16 bit branch. Bit 10 should be set to indicate that
351 the branch is expected to be taken. The lower two bits must be
353 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
357 TRUE, /* pc_relative */
359 complain_overflow_signed, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_PPC_REL14_BRTAKEN", /* name */
362 FALSE, /* partial_inplace */
364 0xfffc, /* dst_mask */
365 TRUE), /* pcrel_offset */
367 /* A relative 16 bit branch. Bit 10 should be set to indicate that
368 the branch is not expected to be taken. The lower two bits must
370 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
374 TRUE, /* pc_relative */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_PPC_REL14_BRNTAKEN",/* name */
379 FALSE, /* partial_inplace */
381 0xfffc, /* dst_mask */
382 TRUE), /* pcrel_offset */
384 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
386 HOWTO (R_PPC_GOT16, /* type */
388 1, /* size (0 = byte, 1 = short, 2 = long) */
390 FALSE, /* pc_relative */
392 complain_overflow_signed, /* complain_on_overflow */
393 bfd_elf_generic_reloc, /* special_function */
394 "R_PPC_GOT16", /* name */
395 FALSE, /* partial_inplace */
397 0xffff, /* dst_mask */
398 FALSE), /* pcrel_offset */
400 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
402 HOWTO (R_PPC_GOT16_LO, /* type */
404 1, /* size (0 = byte, 1 = short, 2 = long) */
406 FALSE, /* pc_relative */
408 complain_overflow_dont, /* complain_on_overflow */
409 bfd_elf_generic_reloc, /* special_function */
410 "R_PPC_GOT16_LO", /* name */
411 FALSE, /* partial_inplace */
413 0xffff, /* dst_mask */
414 FALSE), /* pcrel_offset */
416 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
418 HOWTO (R_PPC_GOT16_HI, /* type */
420 1, /* size (0 = byte, 1 = short, 2 = long) */
422 FALSE, /* pc_relative */
424 complain_overflow_bitfield, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 "R_PPC_GOT16_HI", /* name */
427 FALSE, /* partial_inplace */
429 0xffff, /* dst_mask */
430 FALSE), /* pcrel_offset */
432 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
434 HOWTO (R_PPC_GOT16_HA, /* type */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
438 FALSE, /* pc_relative */
440 complain_overflow_bitfield, /* complain_on_overflow */
441 ppc_elf_addr16_ha_reloc, /* special_function */
442 "R_PPC_GOT16_HA", /* name */
443 FALSE, /* partial_inplace */
445 0xffff, /* dst_mask */
446 FALSE), /* pcrel_offset */
448 /* Like R_PPC_REL24, but referring to the procedure linkage table
449 entry for the symbol. */
450 HOWTO (R_PPC_PLTREL24, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 TRUE, /* pc_relative */
456 complain_overflow_signed, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_PPC_PLTREL24", /* name */
459 FALSE, /* partial_inplace */
461 0x3fffffc, /* dst_mask */
462 TRUE), /* pcrel_offset */
464 /* This is used only by the dynamic linker. The symbol should exist
465 both in the object being run and in some shared library. The
466 dynamic linker copies the data addressed by the symbol from the
467 shared library into the object, because the object being
468 run has to have the data at some particular address. */
469 HOWTO (R_PPC_COPY, /* type */
471 2, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE, /* pc_relative */
475 complain_overflow_bitfield, /* complain_on_overflow */
476 bfd_elf_generic_reloc, /* special_function */
477 "R_PPC_COPY", /* name */
478 FALSE, /* partial_inplace */
481 FALSE), /* pcrel_offset */
483 /* Like R_PPC_ADDR32, but used when setting global offset table
485 HOWTO (R_PPC_GLOB_DAT, /* type */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_bitfield, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_PPC_GLOB_DAT", /* name */
494 FALSE, /* partial_inplace */
496 0xffffffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
499 /* Marks a procedure linkage table entry for a symbol. */
500 HOWTO (R_PPC_JMP_SLOT, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_bitfield, /* complain_on_overflow */
507 bfd_elf_generic_reloc, /* special_function */
508 "R_PPC_JMP_SLOT", /* name */
509 FALSE, /* partial_inplace */
512 FALSE), /* pcrel_offset */
514 /* Used only by the dynamic linker. When the object is run, this
515 longword is set to the load address of the object, plus the
517 HOWTO (R_PPC_RELATIVE, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE, /* pc_relative */
523 complain_overflow_bitfield, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC_RELATIVE", /* name */
526 FALSE, /* partial_inplace */
528 0xffffffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
531 /* Like R_PPC_REL24, but uses the value of the symbol within the
532 object rather than the final value. Normally used for
533 _GLOBAL_OFFSET_TABLE_. */
534 HOWTO (R_PPC_LOCAL24PC, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 TRUE, /* pc_relative */
540 complain_overflow_signed, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_PPC_LOCAL24PC", /* name */
543 FALSE, /* partial_inplace */
545 0x3fffffc, /* dst_mask */
546 TRUE), /* pcrel_offset */
548 /* Like R_PPC_ADDR32, but may be unaligned. */
549 HOWTO (R_PPC_UADDR32, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 FALSE, /* pc_relative */
555 complain_overflow_bitfield, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_PPC_UADDR32", /* name */
558 FALSE, /* partial_inplace */
560 0xffffffff, /* dst_mask */
561 FALSE), /* pcrel_offset */
563 /* Like R_PPC_ADDR16, but may be unaligned. */
564 HOWTO (R_PPC_UADDR16, /* type */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE, /* pc_relative */
570 complain_overflow_bitfield, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_UADDR16", /* name */
573 FALSE, /* partial_inplace */
575 0xffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* 32-bit PC relative */
579 HOWTO (R_PPC_REL32, /* type */
581 2, /* size (0 = byte, 1 = short, 2 = long) */
583 TRUE, /* pc_relative */
585 complain_overflow_bitfield, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
587 "R_PPC_REL32", /* name */
588 FALSE, /* partial_inplace */
590 0xffffffff, /* dst_mask */
591 TRUE), /* pcrel_offset */
593 /* 32-bit relocation to the symbol's procedure linkage table.
594 FIXME: not supported. */
595 HOWTO (R_PPC_PLT32, /* type */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE, /* pc_relative */
601 complain_overflow_bitfield, /* complain_on_overflow */
602 bfd_elf_generic_reloc, /* special_function */
603 "R_PPC_PLT32", /* name */
604 FALSE, /* partial_inplace */
607 FALSE), /* pcrel_offset */
609 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
610 FIXME: not supported. */
611 HOWTO (R_PPC_PLTREL32, /* type */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
615 TRUE, /* pc_relative */
617 complain_overflow_bitfield, /* complain_on_overflow */
618 bfd_elf_generic_reloc, /* special_function */
619 "R_PPC_PLTREL32", /* name */
620 FALSE, /* partial_inplace */
623 TRUE), /* pcrel_offset */
625 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
627 HOWTO (R_PPC_PLT16_LO, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_dont, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC_PLT16_LO", /* name */
636 FALSE, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
643 HOWTO (R_PPC_PLT16_HI, /* type */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE, /* pc_relative */
649 complain_overflow_bitfield, /* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_PPC_PLT16_HI", /* name */
652 FALSE, /* partial_inplace */
654 0xffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
657 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
659 HOWTO (R_PPC_PLT16_HA, /* type */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
663 FALSE, /* pc_relative */
665 complain_overflow_bitfield, /* complain_on_overflow */
666 ppc_elf_addr16_ha_reloc, /* special_function */
667 "R_PPC_PLT16_HA", /* name */
668 FALSE, /* partial_inplace */
670 0xffff, /* dst_mask */
671 FALSE), /* pcrel_offset */
673 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
675 HOWTO (R_PPC_SDAREL16, /* type */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
679 FALSE, /* pc_relative */
681 complain_overflow_signed, /* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_PPC_SDAREL16", /* name */
684 FALSE, /* partial_inplace */
686 0xffff, /* dst_mask */
687 FALSE), /* pcrel_offset */
689 /* 16-bit section relative relocation. */
690 HOWTO (R_PPC_SECTOFF, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE, /* pc_relative */
696 complain_overflow_bitfield, /* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_PPC_SECTOFF", /* name */
699 FALSE, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
704 /* 16-bit lower half section relative relocation. */
705 HOWTO (R_PPC_SECTOFF_LO, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_dont, /* complain_on_overflow */
712 bfd_elf_generic_reloc, /* special_function */
713 "R_PPC_SECTOFF_LO", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* 16-bit upper half section relative relocation. */
720 HOWTO (R_PPC_SECTOFF_HI, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_bitfield, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_SECTOFF_HI", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* 16-bit upper half adjusted section relative relocation. */
735 HOWTO (R_PPC_SECTOFF_HA, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 ppc_elf_addr16_ha_reloc, /* special_function */
743 "R_PPC_SECTOFF_HA", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* Marker reloc for TLS. */
752 2, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_dont, /* complain_on_overflow */
757 bfd_elf_generic_reloc, /* special_function */
758 "R_PPC_TLS", /* name */
759 FALSE, /* partial_inplace */
762 FALSE), /* pcrel_offset */
764 /* Computes the load module index of the load module that contains the
765 definition of its TLS sym. */
766 HOWTO (R_PPC_DTPMOD32,
768 2, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc_elf_unhandled_reloc, /* special_function */
774 "R_PPC_DTPMOD32", /* name */
775 FALSE, /* partial_inplace */
777 0xffffffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* Computes a dtv-relative displacement, the difference between the value
781 of sym+add and the base address of the thread-local storage block that
782 contains the definition of sym, minus 0x8000. */
783 HOWTO (R_PPC_DTPREL32,
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 FALSE, /* pc_relative */
789 complain_overflow_dont, /* complain_on_overflow */
790 ppc_elf_unhandled_reloc, /* special_function */
791 "R_PPC_DTPREL32", /* name */
792 FALSE, /* partial_inplace */
794 0xffffffff, /* dst_mask */
795 FALSE), /* pcrel_offset */
797 /* A 16 bit dtprel reloc. */
798 HOWTO (R_PPC_DTPREL16,
800 1, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE, /* pc_relative */
804 complain_overflow_signed, /* complain_on_overflow */
805 ppc_elf_unhandled_reloc, /* special_function */
806 "R_PPC_DTPREL16", /* name */
807 FALSE, /* partial_inplace */
809 0xffff, /* dst_mask */
810 FALSE), /* pcrel_offset */
812 /* Like DTPREL16, but no overflow. */
813 HOWTO (R_PPC_DTPREL16_LO,
815 1, /* size (0 = byte, 1 = short, 2 = long) */
817 FALSE, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 ppc_elf_unhandled_reloc, /* special_function */
821 "R_PPC_DTPREL16_LO", /* name */
822 FALSE, /* partial_inplace */
824 0xffff, /* dst_mask */
825 FALSE), /* pcrel_offset */
827 /* Like DTPREL16_LO, but next higher group of 16 bits. */
828 HOWTO (R_PPC_DTPREL16_HI,
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 ppc_elf_unhandled_reloc, /* special_function */
836 "R_PPC_DTPREL16_HI", /* name */
837 FALSE, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* Like DTPREL16_HI, but adjust for low 16 bits. */
843 HOWTO (R_PPC_DTPREL16_HA,
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE, /* pc_relative */
849 complain_overflow_dont, /* complain_on_overflow */
850 ppc_elf_unhandled_reloc, /* special_function */
851 "R_PPC_DTPREL16_HA", /* name */
852 FALSE, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
857 /* Computes a tp-relative displacement, the difference between the value of
858 sym+add and the value of the thread pointer (r13). */
859 HOWTO (R_PPC_TPREL32,
861 2, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 ppc_elf_unhandled_reloc, /* special_function */
867 "R_PPC_TPREL32", /* name */
868 FALSE, /* partial_inplace */
870 0xffffffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* A 16 bit tprel reloc. */
874 HOWTO (R_PPC_TPREL16,
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE, /* pc_relative */
880 complain_overflow_signed, /* complain_on_overflow */
881 ppc_elf_unhandled_reloc, /* special_function */
882 "R_PPC_TPREL16", /* name */
883 FALSE, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* Like TPREL16, but no overflow. */
889 HOWTO (R_PPC_TPREL16_LO,
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE, /* pc_relative */
895 complain_overflow_dont, /* complain_on_overflow */
896 ppc_elf_unhandled_reloc, /* special_function */
897 "R_PPC_TPREL16_LO", /* name */
898 FALSE, /* partial_inplace */
900 0xffff, /* dst_mask */
901 FALSE), /* pcrel_offset */
903 /* Like TPREL16_LO, but next higher group of 16 bits. */
904 HOWTO (R_PPC_TPREL16_HI,
906 1, /* size (0 = byte, 1 = short, 2 = long) */
908 FALSE, /* pc_relative */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc_elf_unhandled_reloc, /* special_function */
912 "R_PPC_TPREL16_HI", /* name */
913 FALSE, /* partial_inplace */
915 0xffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
918 /* Like TPREL16_HI, but adjust for low 16 bits. */
919 HOWTO (R_PPC_TPREL16_HA,
921 1, /* size (0 = byte, 1 = short, 2 = long) */
923 FALSE, /* pc_relative */
925 complain_overflow_dont, /* complain_on_overflow */
926 ppc_elf_unhandled_reloc, /* special_function */
927 "R_PPC_TPREL16_HA", /* name */
928 FALSE, /* partial_inplace */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
933 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
934 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
935 to the first entry. */
936 HOWTO (R_PPC_GOT_TLSGD16,
938 1, /* size (0 = byte, 1 = short, 2 = long) */
940 FALSE, /* pc_relative */
942 complain_overflow_signed, /* complain_on_overflow */
943 ppc_elf_unhandled_reloc, /* special_function */
944 "R_PPC_GOT_TLSGD16", /* name */
945 FALSE, /* partial_inplace */
947 0xffff, /* dst_mask */
948 FALSE), /* pcrel_offset */
950 /* Like GOT_TLSGD16, but no overflow. */
951 HOWTO (R_PPC_GOT_TLSGD16_LO,
953 1, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE, /* pc_relative */
957 complain_overflow_dont, /* complain_on_overflow */
958 ppc_elf_unhandled_reloc, /* special_function */
959 "R_PPC_GOT_TLSGD16_LO", /* name */
960 FALSE, /* partial_inplace */
962 0xffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
965 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
966 HOWTO (R_PPC_GOT_TLSGD16_HI,
968 1, /* size (0 = byte, 1 = short, 2 = long) */
970 FALSE, /* pc_relative */
972 complain_overflow_dont, /* complain_on_overflow */
973 ppc_elf_unhandled_reloc, /* special_function */
974 "R_PPC_GOT_TLSGD16_HI", /* name */
975 FALSE, /* partial_inplace */
977 0xffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
980 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
981 HOWTO (R_PPC_GOT_TLSGD16_HA,
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE, /* pc_relative */
987 complain_overflow_dont, /* complain_on_overflow */
988 ppc_elf_unhandled_reloc, /* special_function */
989 "R_PPC_GOT_TLSGD16_HA", /* name */
990 FALSE, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
995 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
996 with values (sym+add)@dtpmod and zero, and computes the offset to the
998 HOWTO (R_PPC_GOT_TLSLD16,
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE, /* pc_relative */
1004 complain_overflow_signed, /* complain_on_overflow */
1005 ppc_elf_unhandled_reloc, /* special_function */
1006 "R_PPC_GOT_TLSLD16", /* name */
1007 FALSE, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1012 /* Like GOT_TLSLD16, but no overflow. */
1013 HOWTO (R_PPC_GOT_TLSLD16_LO,
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 FALSE, /* pc_relative */
1019 complain_overflow_dont, /* complain_on_overflow */
1020 ppc_elf_unhandled_reloc, /* special_function */
1021 "R_PPC_GOT_TLSLD16_LO", /* name */
1022 FALSE, /* partial_inplace */
1024 0xffff, /* dst_mask */
1025 FALSE), /* pcrel_offset */
1027 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1028 HOWTO (R_PPC_GOT_TLSLD16_HI,
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 FALSE, /* pc_relative */
1034 complain_overflow_dont, /* complain_on_overflow */
1035 ppc_elf_unhandled_reloc, /* special_function */
1036 "R_PPC_GOT_TLSLD16_HI", /* name */
1037 FALSE, /* partial_inplace */
1039 0xffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1042 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1043 HOWTO (R_PPC_GOT_TLSLD16_HA,
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE, /* pc_relative */
1049 complain_overflow_dont, /* complain_on_overflow */
1050 ppc_elf_unhandled_reloc, /* special_function */
1051 "R_PPC_GOT_TLSLD16_HA", /* name */
1052 FALSE, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1057 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1058 the offset to the entry. */
1059 HOWTO (R_PPC_GOT_DTPREL16,
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE, /* pc_relative */
1065 complain_overflow_signed, /* complain_on_overflow */
1066 ppc_elf_unhandled_reloc, /* special_function */
1067 "R_PPC_GOT_DTPREL16", /* name */
1068 FALSE, /* partial_inplace */
1070 0xffff, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1073 /* Like GOT_DTPREL16, but no overflow. */
1074 HOWTO (R_PPC_GOT_DTPREL16_LO,
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont, /* complain_on_overflow */
1081 ppc_elf_unhandled_reloc, /* special_function */
1082 "R_PPC_GOT_DTPREL16_LO", /* name */
1083 FALSE, /* partial_inplace */
1085 0xffff, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1088 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1089 HOWTO (R_PPC_GOT_DTPREL16_HI,
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_dont, /* complain_on_overflow */
1096 ppc_elf_unhandled_reloc, /* special_function */
1097 "R_PPC_GOT_DTPREL16_HI", /* name */
1098 FALSE, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1104 HOWTO (R_PPC_GOT_DTPREL16_HA,
1105 16, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc, /* special_function */
1112 "R_PPC_GOT_DTPREL16_HA", /* name */
1113 FALSE, /* partial_inplace */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1119 offset to the entry. */
1120 HOWTO (R_PPC_GOT_TPREL16,
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE, /* pc_relative */
1126 complain_overflow_signed, /* complain_on_overflow */
1127 ppc_elf_unhandled_reloc, /* special_function */
1128 "R_PPC_GOT_TPREL16", /* name */
1129 FALSE, /* partial_inplace */
1131 0xffff, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1134 /* Like GOT_TPREL16, but no overflow. */
1135 HOWTO (R_PPC_GOT_TPREL16_LO,
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE, /* pc_relative */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc_elf_unhandled_reloc, /* special_function */
1143 "R_PPC_GOT_TPREL16_LO", /* name */
1144 FALSE, /* partial_inplace */
1146 0xffff, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1149 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1150 HOWTO (R_PPC_GOT_TPREL16_HI,
1151 16, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE, /* pc_relative */
1156 complain_overflow_dont, /* complain_on_overflow */
1157 ppc_elf_unhandled_reloc, /* special_function */
1158 "R_PPC_GOT_TPREL16_HI", /* name */
1159 FALSE, /* partial_inplace */
1161 0xffff, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1164 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1165 HOWTO (R_PPC_GOT_TPREL16_HA,
1166 16, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc_elf_unhandled_reloc, /* special_function */
1173 "R_PPC_GOT_TPREL16_HA", /* name */
1174 FALSE, /* partial_inplace */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* The remaining relocs are from the Embedded ELF ABI, and are not
1180 in the SVR4 ELF ABI. */
1182 /* 32 bit value resulting from the addend minus the symbol. */
1183 HOWTO (R_PPC_EMB_NADDR32, /* type */
1185 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE, /* pc_relative */
1189 complain_overflow_bitfield, /* complain_on_overflow */
1190 bfd_elf_generic_reloc, /* special_function */
1191 "R_PPC_EMB_NADDR32", /* name */
1192 FALSE, /* partial_inplace */
1194 0xffffffff, /* dst_mask */
1195 FALSE), /* pcrel_offset */
1197 /* 16 bit value resulting from the addend minus the symbol. */
1198 HOWTO (R_PPC_EMB_NADDR16, /* type */
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 FALSE, /* pc_relative */
1204 complain_overflow_bitfield, /* complain_on_overflow */
1205 bfd_elf_generic_reloc, /* special_function */
1206 "R_PPC_EMB_NADDR16", /* name */
1207 FALSE, /* partial_inplace */
1209 0xffff, /* dst_mask */
1210 FALSE), /* pcrel_offset */
1212 /* 16 bit value resulting from the addend minus the symbol. */
1213 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE, /* pc_relative */
1219 complain_overflow_dont,/* complain_on_overflow */
1220 bfd_elf_generic_reloc, /* special_function */
1221 "R_PPC_EMB_ADDR16_LO", /* name */
1222 FALSE, /* partial_inplace */
1224 0xffff, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1227 /* The high order 16 bits of the addend minus the symbol. */
1228 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1229 16, /* rightshift */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE, /* pc_relative */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 bfd_elf_generic_reloc, /* special_function */
1236 "R_PPC_EMB_NADDR16_HI", /* name */
1237 FALSE, /* partial_inplace */
1239 0xffff, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1242 /* The high order 16 bits of the result of the addend minus the address,
1243 plus 1 if the contents of the low 16 bits, treated as a signed number,
1245 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1246 16, /* rightshift */
1247 1, /* size (0 = byte, 1 = short, 2 = long) */
1249 FALSE, /* pc_relative */
1251 complain_overflow_dont, /* complain_on_overflow */
1252 ppc_elf_addr16_ha_reloc, /* special_function */
1253 "R_PPC_EMB_NADDR16_HA", /* name */
1254 FALSE, /* partial_inplace */
1256 0xffff, /* dst_mask */
1257 FALSE), /* pcrel_offset */
1259 /* 16 bit value resulting from allocating a 4 byte word to hold an
1260 address in the .sdata section, and returning the offset from
1261 _SDA_BASE_ for that relocation. */
1262 HOWTO (R_PPC_EMB_SDAI16, /* type */
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 FALSE, /* pc_relative */
1268 complain_overflow_bitfield, /* complain_on_overflow */
1269 bfd_elf_generic_reloc, /* special_function */
1270 "R_PPC_EMB_SDAI16", /* name */
1271 FALSE, /* partial_inplace */
1273 0xffff, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1276 /* 16 bit value resulting from allocating a 4 byte word to hold an
1277 address in the .sdata2 section, and returning the offset from
1278 _SDA2_BASE_ for that relocation. */
1279 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_bitfield, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC_EMB_SDA2I16", /* name */
1288 FALSE, /* partial_inplace */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1294 small data items. */
1295 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1297 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 FALSE, /* pc_relative */
1301 complain_overflow_signed, /* complain_on_overflow */
1302 bfd_elf_generic_reloc, /* special_function */
1303 "R_PPC_EMB_SDA2REL", /* name */
1304 FALSE, /* partial_inplace */
1306 0xffff, /* dst_mask */
1307 FALSE), /* pcrel_offset */
1309 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1310 signed offset from the appropriate base, and filling in the register
1311 field with the appropriate register (0, 2, or 13). */
1312 HOWTO (R_PPC_EMB_SDA21, /* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE, /* pc_relative */
1318 complain_overflow_signed, /* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_PPC_EMB_SDA21", /* name */
1321 FALSE, /* partial_inplace */
1323 0xffff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1326 /* Relocation not handled: R_PPC_EMB_MRKREF */
1327 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1328 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1331 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1333 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1334 in the 16 bit signed offset from the appropriate base, and filling in the
1335 register field with the appropriate register (0, 2, or 13). */
1336 HOWTO (R_PPC_EMB_RELSDA, /* type */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 TRUE, /* pc_relative */
1342 complain_overflow_signed, /* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_PPC_EMB_RELSDA", /* name */
1345 FALSE, /* partial_inplace */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1350 /* A 16 bit relative relocation. */
1351 HOWTO (R_PPC_REL16, /* type */
1353 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 TRUE, /* pc_relative */
1357 complain_overflow_bitfield, /* complain_on_overflow */
1358 bfd_elf_generic_reloc, /* special_function */
1359 "R_PPC_REL16", /* name */
1360 FALSE, /* partial_inplace */
1362 0xffff, /* dst_mask */
1363 TRUE), /* pcrel_offset */
1365 /* A 16 bit relative relocation without overflow. */
1366 HOWTO (R_PPC_REL16_LO, /* type */
1368 1, /* size (0 = byte, 1 = short, 2 = long) */
1370 TRUE, /* pc_relative */
1372 complain_overflow_dont,/* complain_on_overflow */
1373 bfd_elf_generic_reloc, /* special_function */
1374 "R_PPC_REL16_LO", /* name */
1375 FALSE, /* partial_inplace */
1377 0xffff, /* dst_mask */
1378 TRUE), /* pcrel_offset */
1380 /* The high order 16 bits of a relative address. */
1381 HOWTO (R_PPC_REL16_HI, /* type */
1382 16, /* rightshift */
1383 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 TRUE, /* pc_relative */
1387 complain_overflow_dont, /* complain_on_overflow */
1388 bfd_elf_generic_reloc, /* special_function */
1389 "R_PPC_REL16_HI", /* name */
1390 FALSE, /* partial_inplace */
1392 0xffff, /* dst_mask */
1393 TRUE), /* pcrel_offset */
1395 /* The high order 16 bits of a relative address, plus 1 if the contents of
1396 the low 16 bits, treated as a signed number, is negative. */
1397 HOWTO (R_PPC_REL16_HA, /* type */
1398 16, /* rightshift */
1399 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 TRUE, /* pc_relative */
1403 complain_overflow_dont, /* complain_on_overflow */
1404 ppc_elf_addr16_ha_reloc, /* special_function */
1405 "R_PPC_REL16_HA", /* name */
1406 FALSE, /* partial_inplace */
1408 0xffff, /* dst_mask */
1409 TRUE), /* pcrel_offset */
1411 /* GNU extension to record C++ vtable hierarchy. */
1412 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1414 0, /* size (0 = byte, 1 = short, 2 = long) */
1416 FALSE, /* pc_relative */
1418 complain_overflow_dont, /* complain_on_overflow */
1419 NULL, /* special_function */
1420 "R_PPC_GNU_VTINHERIT", /* name */
1421 FALSE, /* partial_inplace */
1424 FALSE), /* pcrel_offset */
1426 /* GNU extension to record C++ vtable member usage. */
1427 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1429 0, /* size (0 = byte, 1 = short, 2 = long) */
1431 FALSE, /* pc_relative */
1433 complain_overflow_dont, /* complain_on_overflow */
1434 NULL, /* special_function */
1435 "R_PPC_GNU_VTENTRY", /* name */
1436 FALSE, /* partial_inplace */
1439 FALSE), /* pcrel_offset */
1441 /* Phony reloc to handle AIX style TOC entries. */
1442 HOWTO (R_PPC_TOC16, /* type */
1444 1, /* size (0 = byte, 1 = short, 2 = long) */
1446 FALSE, /* pc_relative */
1448 complain_overflow_signed, /* complain_on_overflow */
1449 bfd_elf_generic_reloc, /* special_function */
1450 "R_PPC_TOC16", /* name */
1451 FALSE, /* partial_inplace */
1453 0xffff, /* dst_mask */
1454 FALSE), /* pcrel_offset */
1457 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1460 ppc_elf_howto_init (void)
1462 unsigned int i, type;
1465 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1468 type = ppc_elf_howto_raw[i].type;
1469 if (type >= (sizeof (ppc_elf_howto_table)
1470 / sizeof (ppc_elf_howto_table[0])))
1472 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1476 static reloc_howto_type *
1477 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1478 bfd_reloc_code_real_type code)
1480 enum elf_ppc_reloc_type r;
1482 /* Initialize howto table if not already done. */
1483 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1484 ppc_elf_howto_init ();
1491 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1492 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1493 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1494 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1495 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1496 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1497 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1498 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1499 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1500 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1501 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1502 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1503 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1504 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1505 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1506 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1507 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1508 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1509 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1510 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1511 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1512 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1513 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1514 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1515 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1516 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1517 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1518 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1519 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1520 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1521 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1522 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1523 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1524 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1525 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1526 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1527 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1528 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1529 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1530 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1531 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1532 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1533 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1534 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1535 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1536 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1537 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1554 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1559 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1560 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1561 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1562 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1563 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1564 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1565 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1568 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1569 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1570 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1571 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1572 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1573 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1574 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1575 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1578 return ppc_elf_howto_table[r];
1581 /* Set the howto pointer for a PowerPC ELF reloc. */
1584 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1586 Elf_Internal_Rela *dst)
1588 /* Initialize howto table if not already done. */
1589 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1590 ppc_elf_howto_init ();
1592 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1593 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1596 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1598 static bfd_reloc_status_type
1599 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1600 arelent *reloc_entry,
1602 void *data ATTRIBUTE_UNUSED,
1603 asection *input_section,
1605 char **error_message ATTRIBUTE_UNUSED)
1609 if (output_bfd != NULL)
1611 reloc_entry->address += input_section->output_offset;
1612 return bfd_reloc_ok;
1615 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1616 return bfd_reloc_outofrange;
1618 if (bfd_is_com_section (symbol->section))
1621 relocation = symbol->value;
1623 relocation += symbol->section->output_section->vma;
1624 relocation += symbol->section->output_offset;
1625 relocation += reloc_entry->addend;
1626 if (reloc_entry->howto->pc_relative)
1627 relocation -= reloc_entry->address;
1629 reloc_entry->addend += (relocation & 0x8000) << 1;
1631 return bfd_reloc_continue;
1634 static bfd_reloc_status_type
1635 ppc_elf_unhandled_reloc (bfd *abfd,
1636 arelent *reloc_entry,
1639 asection *input_section,
1641 char **error_message)
1643 /* If this is a relocatable link (output_bfd test tells us), just
1644 call the generic function. Any adjustment will be done at final
1646 if (output_bfd != NULL)
1647 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1648 input_section, output_bfd, error_message);
1650 if (error_message != NULL)
1652 static char buf[60];
1653 sprintf (buf, _("generic linker can't handle %s"),
1654 reloc_entry->howto->name);
1655 *error_message = buf;
1657 return bfd_reloc_dangerous;
1660 /* Sections created by the linker. */
1662 typedef struct elf_linker_section
1664 /* Pointer to the bfd section. */
1668 /* Associated bss section name. */
1669 const char *bss_name;
1670 /* Associated symbol name. */
1671 const char *sym_name;
1672 /* Associated symbol. */
1673 struct elf_link_hash_entry *sym;
1674 } elf_linker_section_t;
1676 /* Linked list of allocated pointer entries. This hangs off of the
1677 symbol lists, and provides allows us to return different pointers,
1678 based on different addend's. */
1680 typedef struct elf_linker_section_pointers
1682 /* next allocated pointer for this symbol */
1683 struct elf_linker_section_pointers *next;
1684 /* offset of pointer from beginning of section */
1688 /* which linker section this is */
1689 elf_linker_section_t *lsect;
1690 } elf_linker_section_pointers_t;
1692 struct ppc_elf_obj_tdata
1694 struct elf_obj_tdata elf;
1696 /* A mapping from local symbols to offsets into the various linker
1697 sections added. This is index by the symbol index. */
1698 elf_linker_section_pointers_t **linker_section_pointers;
1701 #define ppc_elf_tdata(bfd) \
1702 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1704 #define elf_local_ptr_offsets(bfd) \
1705 (ppc_elf_tdata (bfd)->linker_section_pointers)
1707 /* Override the generic function because we store some extras. */
1710 ppc_elf_mkobject (bfd *abfd)
1712 if (abfd->tdata.any == NULL)
1714 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1715 abfd->tdata.any = bfd_zalloc (abfd, amt);
1716 if (abfd->tdata.any == NULL)
1719 return bfd_elf_mkobject (abfd);
1722 /* Fix bad default arch selected for a 32 bit input bfd when the
1723 default is 64 bit. */
1726 ppc_elf_object_p (bfd *abfd)
1728 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1730 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1732 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1734 /* Relies on arch after 64 bit default being 32 bit default. */
1735 abfd->arch_info = abfd->arch_info->next;
1736 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1742 /* Function to set whether a module needs the -mrelocatable bit set. */
1745 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1747 BFD_ASSERT (!elf_flags_init (abfd)
1748 || elf_elfheader (abfd)->e_flags == flags);
1750 elf_elfheader (abfd)->e_flags = flags;
1751 elf_flags_init (abfd) = TRUE;
1755 /* Support for core dump NOTE sections. */
1758 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1763 switch (note->descsz)
1768 case 268: /* Linux/PPC. */
1770 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1773 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1782 /* Make a ".reg/999" section. */
1783 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1784 size, note->descpos + offset);
1788 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1790 switch (note->descsz)
1795 case 128: /* Linux/PPC elf_prpsinfo. */
1796 elf_tdata (abfd)->core_program
1797 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1798 elf_tdata (abfd)->core_command
1799 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1802 /* Note that for some reason, a spurious space is tacked
1803 onto the end of the args in some (at least one anyway)
1804 implementations, so strip it off if it exists. */
1807 char *command = elf_tdata (abfd)->core_command;
1808 int n = strlen (command);
1810 if (0 < n && command[n - 1] == ' ')
1811 command[n - 1] = '\0';
1818 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1830 va_start (ap, note_type);
1831 memset (data, 0, 32);
1832 strncpy (data + 32, va_arg (ap, const char *), 16);
1833 strncpy (data + 48, va_arg (ap, const char *), 80);
1835 return elfcore_write_note (abfd, buf, bufsiz,
1836 "CORE", note_type, data, sizeof (data));
1847 va_start (ap, note_type);
1848 memset (data, 0, 72);
1849 pid = va_arg (ap, long);
1850 bfd_put_32 (abfd, pid, data + 24);
1851 cursig = va_arg (ap, int);
1852 bfd_put_16 (abfd, cursig, data + 12);
1853 greg = va_arg (ap, const void *);
1854 memcpy (data + 72, greg, 192);
1855 memset (data + 264, 0, 4);
1857 return elfcore_write_note (abfd, buf, bufsiz,
1858 "CORE", note_type, data, sizeof (data));
1863 /* Return address for Ith PLT stub in section PLT, for relocation REL
1864 or (bfd_vma) -1 if it should not be included. */
1867 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1868 const asection *plt ATTRIBUTE_UNUSED,
1871 return rel->address;
1874 /* Handle a PowerPC specific section when reading an object file. This
1875 is called when bfd_section_from_shdr finds a section with an unknown
1879 ppc_elf_section_from_shdr (bfd *abfd,
1880 Elf_Internal_Shdr *hdr,
1887 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1890 newsect = hdr->bfd_section;
1891 flags = bfd_get_section_flags (abfd, newsect);
1892 if (hdr->sh_flags & SHF_EXCLUDE)
1893 flags |= SEC_EXCLUDE;
1895 if (hdr->sh_type == SHT_ORDERED)
1896 flags |= SEC_SORT_ENTRIES;
1898 bfd_set_section_flags (abfd, newsect, flags);
1902 /* Set up any other section flags and such that may be necessary. */
1905 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1906 Elf_Internal_Shdr *shdr,
1909 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1910 shdr->sh_flags |= SHF_EXCLUDE;
1912 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1913 shdr->sh_type = SHT_ORDERED;
1918 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1919 need to bump up the number of section headers. */
1922 ppc_elf_additional_program_headers (bfd *abfd,
1923 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1928 s = bfd_get_section_by_name (abfd, ".sbss2");
1929 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1932 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1933 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1939 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1940 .PPC.EMB.sbss0 a normal section, and not a bss section so
1941 that the linker doesn't crater when trying to make more than
1944 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1946 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1947 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1948 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1949 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1950 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1951 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1952 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1953 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1954 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1955 { NULL, 0, 0, 0, 0 }
1958 /* This is what we want for new plt/got. */
1959 static struct bfd_elf_special_section ppc_alt_plt =
1960 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1962 static const struct bfd_elf_special_section *
1963 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1965 const struct bfd_elf_special_section *ssect;
1967 /* See if this is one of the special sections. */
1968 if (sec->name == NULL)
1971 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1975 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1976 ssect = &ppc_alt_plt;
1980 return _bfd_elf_get_sec_type_attr (abfd, sec);
1983 /* Very simple linked list structure for recording apuinfo values. */
1984 typedef struct apuinfo_list
1986 struct apuinfo_list *next;
1987 unsigned long value;
1991 static apuinfo_list *head;
1995 apuinfo_list_init (void)
2001 apuinfo_list_add (unsigned long value)
2003 apuinfo_list *entry = head;
2005 while (entry != NULL)
2007 if (entry->value == value)
2009 entry = entry->next;
2012 entry = bfd_malloc (sizeof (* entry));
2016 entry->value = value;
2022 apuinfo_list_length (void)
2024 apuinfo_list *entry;
2025 unsigned long count;
2027 for (entry = head, count = 0;
2029 entry = entry->next)
2035 static inline unsigned long
2036 apuinfo_list_element (unsigned long number)
2038 apuinfo_list * entry;
2042 entry = entry->next)
2045 return entry ? entry->value : 0;
2049 apuinfo_list_finish (void)
2051 apuinfo_list *entry;
2053 for (entry = head; entry;)
2055 apuinfo_list *next = entry->next;
2063 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2064 #define APUINFO_LABEL "APUinfo"
2066 /* Scan the input BFDs and create a linked list of
2067 the APUinfo values that will need to be emitted. */
2070 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2075 unsigned num_input_sections;
2076 bfd_size_type output_section_size;
2078 unsigned num_entries;
2079 unsigned long offset;
2080 unsigned long length;
2081 const char *error_message = NULL;
2083 if (link_info == NULL)
2086 /* Scan the input bfds, looking for apuinfo sections. */
2087 num_input_sections = 0;
2088 output_section_size = 0;
2090 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2092 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2095 ++ num_input_sections;
2096 output_section_size += asec->size;
2100 /* We need at least one input sections
2101 in order to make merging worthwhile. */
2102 if (num_input_sections < 1)
2105 /* Just make sure that the output section exists as well. */
2106 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2110 /* Allocate a buffer for the contents of the input sections. */
2111 buffer = bfd_malloc (output_section_size);
2116 apuinfo_list_init ();
2118 /* Read in the input sections contents. */
2119 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2121 unsigned long datum;
2124 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2128 length = asec->size;
2131 error_message = _("corrupt or empty %s section in %B");
2135 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2136 || (bfd_bread (buffer + offset, length, ibfd) != length))
2138 error_message = _("unable to read in %s section from %B");
2142 /* Process the contents of the section. */
2143 ptr = buffer + offset;
2144 error_message = _("corrupt %s section in %B");
2146 /* Verify the contents of the header. Note - we have to
2147 extract the values this way in order to allow for a
2148 host whose endian-ness is different from the target. */
2149 datum = bfd_get_32 (ibfd, ptr);
2150 if (datum != sizeof APUINFO_LABEL)
2153 datum = bfd_get_32 (ibfd, ptr + 8);
2157 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2160 /* Get the number of bytes used for apuinfo entries. */
2161 datum = bfd_get_32 (ibfd, ptr + 4);
2162 if (datum + 20 != length)
2165 /* Make sure that we do not run off the end of the section. */
2166 if (offset + length > output_section_size)
2169 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2170 for (i = 0; i < datum; i += 4)
2171 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2173 /* Update the offset. */
2177 error_message = NULL;
2179 /* Compute the size of the output section. */
2180 num_entries = apuinfo_list_length ();
2181 output_section_size = 20 + num_entries * 4;
2183 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2185 if (! bfd_set_section_size (abfd, asec, output_section_size))
2187 error_message = _("warning: unable to set size of %s section in %B");
2193 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2196 /* Prevent the output section from accumulating the input sections'
2197 contents. We have already stored this in our linked list structure. */
2200 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2201 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2203 bfd_byte *contents ATTRIBUTE_UNUSED)
2205 return (apuinfo_list_length ()
2206 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2209 /* Finally we can generate the output section. */
2212 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2217 unsigned num_entries;
2218 bfd_size_type length;
2220 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2224 if (apuinfo_list_length () == 0)
2227 length = asec->size;
2231 buffer = bfd_malloc (length);
2234 (*_bfd_error_handler)
2235 (_("failed to allocate space for new APUinfo section."));
2239 /* Create the apuinfo header. */
2240 num_entries = apuinfo_list_length ();
2241 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2242 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2243 bfd_put_32 (abfd, 0x2, buffer + 8);
2244 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2247 for (i = 0; i < num_entries; i++)
2249 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2253 if (length != asec->size)
2254 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2256 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2257 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2261 apuinfo_list_finish ();
2264 /* The following functions are specific to the ELF linker, while
2265 functions above are used generally. They appear in this file more
2266 or less in the order in which they are called. eg.
2267 ppc_elf_check_relocs is called early in the link process,
2268 ppc_elf_finish_dynamic_sections is one of the last functions
2271 /* The PPC linker needs to keep track of the number of relocs that it
2272 decides to copy as dynamic relocs in check_relocs for each symbol.
2273 This is so that it can later discard them if they are found to be
2274 unnecessary. We store the information in a field extending the
2275 regular ELF linker hash table. */
2277 struct ppc_elf_dyn_relocs
2279 struct ppc_elf_dyn_relocs *next;
2281 /* The input section of the reloc. */
2284 /* Total number of relocs copied for the input section. */
2285 bfd_size_type count;
2287 /* Number of pc-relative relocs copied for the input section. */
2288 bfd_size_type pc_count;
2291 /* Track PLT entries needed for a given symbol. We might need more
2292 than one glink entry per symbol. */
2295 struct plt_entry *next;
2297 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2298 This field stores the offset into .got2 used to initialise the
2299 GOT pointer reg. It will always be at least 32768 (and for
2300 current gcc this is the only offset used). */
2303 /* The .got2 section. */
2306 /* PLT refcount or offset. */
2309 bfd_signed_vma refcount;
2313 /* .glink stub offset. */
2314 bfd_vma glink_offset;
2317 /* Of those relocs that might be copied as dynamic relocs, this macro
2318 selects those that must be copied when linking a shared library,
2319 even when the symbol is local. */
2321 #define MUST_BE_DYN_RELOC(RTYPE) \
2322 ((RTYPE) != R_PPC_REL24 \
2323 && (RTYPE) != R_PPC_REL14 \
2324 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2325 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2326 && (RTYPE) != R_PPC_REL32)
2328 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2329 copying dynamic variables from a shared lib into an app's dynbss
2330 section, and instead use a dynamic relocation to point into the
2332 #define ELIMINATE_COPY_RELOCS 1
2334 /* PPC ELF linker hash entry. */
2336 struct ppc_elf_link_hash_entry
2338 struct elf_link_hash_entry elf;
2340 /* If this symbol is used in the linker created sections, the processor
2341 specific backend uses this field to map the field into the offset
2342 from the beginning of the section. */
2343 elf_linker_section_pointers_t *linker_section_pointer;
2345 /* Track dynamic relocs copied for this symbol. */
2346 struct ppc_elf_dyn_relocs *dyn_relocs;
2348 /* Contexts in which symbol is used in the GOT (or TOC).
2349 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2350 corresponding relocs are encountered during check_relocs.
2351 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2352 indicate the corresponding GOT entry type is not needed. */
2353 #define TLS_GD 1 /* GD reloc. */
2354 #define TLS_LD 2 /* LD reloc. */
2355 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2356 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2357 #define TLS_TLS 16 /* Any TLS reloc. */
2358 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2361 /* Nonzero if we have seen a small data relocation referring to this
2363 unsigned char has_sda_refs;
2366 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2368 enum ppc_elf_plt_type {
2375 /* PPC ELF linker hash table. */
2377 struct ppc_elf_link_hash_table
2379 struct elf_link_hash_table elf;
2381 /* Short-cuts to get to dynamic linker sections. */
2391 elf_linker_section_t sdata[2];
2394 /* Shortcut to .__tls_get_addr. */
2395 struct elf_link_hash_entry *tls_get_addr;
2397 /* TLS local dynamic got entry handling. */
2399 bfd_signed_vma refcount;
2403 /* Offset of PltResolve function in glink. */
2404 bfd_vma glink_pltresolve;
2406 /* Size of reserved GOT entries. */
2407 unsigned int got_header_size;
2408 /* Non-zero if allocating the header left a gap. */
2409 unsigned int got_gap;
2411 /* The type of PLT we have chosen to use. */
2412 enum ppc_elf_plt_type plt_type;
2414 /* Whether we can use the new PLT layout. */
2415 unsigned int can_use_new_plt:1;
2417 /* Set if we should emit symbols for stubs. */
2418 unsigned int emit_stub_syms:1;
2420 /* Small local sym to section mapping cache. */
2421 struct sym_sec_cache sym_sec;
2423 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2426 /* The .got.plt section (VxWorks only)*/
2429 /* True if the target system is VxWorks. */
2432 /* The size of PLT entries. */
2434 /* The distance between adjacent PLT slots. */
2436 /* The size of the first PLT entry. */
2437 int plt_initial_entry_size;
2440 /* Get the PPC ELF linker hash table from a link_info structure. */
2442 #define ppc_elf_hash_table(p) \
2443 ((struct ppc_elf_link_hash_table *) (p)->hash)
2445 /* Create an entry in a PPC ELF linker hash table. */
2447 static struct bfd_hash_entry *
2448 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2449 struct bfd_hash_table *table,
2452 /* Allocate the structure if it has not already been allocated by a
2456 entry = bfd_hash_allocate (table,
2457 sizeof (struct ppc_elf_link_hash_entry));
2462 /* Call the allocation method of the superclass. */
2463 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2466 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2467 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2468 ppc_elf_hash_entry (entry)->tls_mask = 0;
2474 /* Create a PPC ELF linker hash table. */
2476 static struct bfd_link_hash_table *
2477 ppc_elf_link_hash_table_create (bfd *abfd)
2479 struct ppc_elf_link_hash_table *ret;
2481 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2485 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2486 ppc_elf_link_hash_newfunc,
2487 sizeof (struct ppc_elf_link_hash_entry)))
2493 ret->elf.init_plt_refcount.refcount = 0;
2494 ret->elf.init_plt_refcount.glist = NULL;
2495 ret->elf.init_plt_offset.offset = 0;
2496 ret->elf.init_plt_offset.glist = NULL;
2498 ret->sdata[0].name = ".sdata";
2499 ret->sdata[0].sym_name = "_SDA_BASE_";
2500 ret->sdata[0].bss_name = ".sbss";
2502 ret->sdata[1].name = ".sdata2";
2503 ret->sdata[1].sym_name = "_SDA2_BASE_";
2504 ret->sdata[1].bss_name = ".sbss2";
2506 ret->plt_entry_size = 12;
2507 ret->plt_slot_size = 8;
2508 ret->plt_initial_entry_size = 72;
2510 ret->is_vxworks = 0;
2512 return &ret->elf.root;
2515 /* Create .got and the related sections. */
2518 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2520 struct ppc_elf_link_hash_table *htab;
2524 if (!_bfd_elf_create_got_section (abfd, info))
2527 htab = ppc_elf_hash_table (info);
2528 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2532 if (htab->is_vxworks)
2534 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2540 /* The powerpc .got has a blrl instruction in it. Mark it
2542 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2543 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2544 if (!bfd_set_section_flags (abfd, s, flags))
2548 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2549 | SEC_LINKER_CREATED | SEC_READONLY);
2550 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2552 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2558 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2559 to output sections (just like _bfd_elf_create_dynamic_sections has
2560 to create .dynbss and .rela.bss). */
2563 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2565 struct ppc_elf_link_hash_table *htab;
2569 htab = ppc_elf_hash_table (info);
2571 if (htab->got == NULL
2572 && !ppc_elf_create_got (abfd, info))
2575 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2578 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2579 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2581 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2584 || !bfd_set_section_alignment (abfd, s, 4))
2587 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2588 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2589 SEC_ALLOC | SEC_LINKER_CREATED);
2596 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2597 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2600 || ! bfd_set_section_alignment (abfd, s, 2))
2604 if (htab->is_vxworks
2605 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2608 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2609 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2613 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2614 if (htab->plt_type == PLT_VXWORKS)
2615 /* The VxWorks PLT is a loaded section with contents. */
2616 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2617 return bfd_set_section_flags (abfd, s, flags);
2620 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2623 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2624 struct elf_link_hash_entry *dir,
2625 struct elf_link_hash_entry *ind)
2627 struct ppc_elf_link_hash_entry *edir, *eind;
2629 edir = (struct ppc_elf_link_hash_entry *) dir;
2630 eind = (struct ppc_elf_link_hash_entry *) ind;
2632 if (eind->dyn_relocs != NULL)
2634 if (edir->dyn_relocs != NULL)
2636 struct ppc_elf_dyn_relocs **pp;
2637 struct ppc_elf_dyn_relocs *p;
2639 /* Add reloc counts against the indirect sym to the direct sym
2640 list. Merge any entries against the same section. */
2641 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2643 struct ppc_elf_dyn_relocs *q;
2645 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2646 if (q->sec == p->sec)
2648 q->pc_count += p->pc_count;
2649 q->count += p->count;
2656 *pp = edir->dyn_relocs;
2659 edir->dyn_relocs = eind->dyn_relocs;
2660 eind->dyn_relocs = NULL;
2663 edir->tls_mask |= eind->tls_mask;
2664 edir->has_sda_refs |= eind->has_sda_refs;
2666 /* If called to transfer flags for a weakdef during processing
2667 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2668 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2669 if (!(ELIMINATE_COPY_RELOCS
2670 && eind->elf.root.type != bfd_link_hash_indirect
2671 && edir->elf.dynamic_adjusted))
2672 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2674 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2675 edir->elf.ref_regular |= eind->elf.ref_regular;
2676 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2677 edir->elf.needs_plt |= eind->elf.needs_plt;
2679 /* If we were called to copy over info for a weak sym, that's all. */
2680 if (eind->elf.root.type != bfd_link_hash_indirect)
2683 /* Copy over the GOT refcount entries that we may have already seen to
2684 the symbol which just became indirect. */
2685 edir->elf.got.refcount += eind->elf.got.refcount;
2686 eind->elf.got.refcount = 0;
2688 /* And plt entries. */
2689 if (eind->elf.plt.plist != NULL)
2691 if (edir->elf.plt.plist != NULL)
2693 struct plt_entry **entp;
2694 struct plt_entry *ent;
2696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2698 struct plt_entry *dent;
2700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2701 if (dent->sec == ent->sec && dent->addend == ent->addend)
2703 dent->plt.refcount += ent->plt.refcount;
2710 *entp = edir->elf.plt.plist;
2713 edir->elf.plt.plist = eind->elf.plt.plist;
2714 eind->elf.plt.plist = NULL;
2717 if (eind->elf.dynindx != -1)
2719 if (edir->elf.dynindx != -1)
2720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2721 edir->elf.dynstr_index);
2722 edir->elf.dynindx = eind->elf.dynindx;
2723 edir->elf.dynstr_index = eind->elf.dynstr_index;
2724 eind->elf.dynindx = -1;
2725 eind->elf.dynstr_index = 0;
2729 /* Return 1 if target is one of ours. */
2732 is_ppc_elf_target (const struct bfd_target *targ)
2734 extern const bfd_target bfd_elf32_powerpc_vec;
2735 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
2736 extern const bfd_target bfd_elf32_powerpcle_vec;
2738 return (targ == &bfd_elf32_powerpc_vec
2739 || targ == &bfd_elf32_powerpc_vxworks_vec
2740 || targ == &bfd_elf32_powerpcle_vec);
2743 /* Hook called by the linker routine which adds symbols from an object
2744 file. We use it to put .comm items in .sbss, and not .bss. */
2747 ppc_elf_add_symbol_hook (bfd *abfd,
2748 struct bfd_link_info *info,
2749 Elf_Internal_Sym *sym,
2750 const char **namep ATTRIBUTE_UNUSED,
2751 flagword *flagsp ATTRIBUTE_UNUSED,
2755 if (sym->st_shndx == SHN_COMMON
2756 && !info->relocatable
2757 && sym->st_size <= elf_gp_size (abfd)
2758 && is_ppc_elf_target (info->hash->creator))
2760 /* Common symbols less than or equal to -G nn bytes are automatically
2762 struct ppc_elf_link_hash_table *htab;
2764 htab = ppc_elf_hash_table (info);
2765 if (htab->sbss == NULL)
2767 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2769 if (!htab->elf.dynobj)
2770 htab->elf.dynobj = abfd;
2772 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2775 if (htab->sbss == NULL)
2780 *valp = sym->st_size;
2787 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2788 elf_linker_section_t *lsect)
2790 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2792 if (lsect->sym == NULL)
2794 if (lsect->sym->root.type == bfd_link_hash_new)
2795 lsect->sym->non_elf = 0;
2796 lsect->sym->ref_regular = 1;
2800 /* Create a special linker section. */
2803 ppc_elf_create_linker_section (bfd *abfd,
2804 struct bfd_link_info *info,
2806 elf_linker_section_t *lsect)
2808 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2811 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2812 | SEC_LINKER_CREATED);
2814 /* Record the first bfd that needs the special sections. */
2815 if (!htab->elf.dynobj)
2816 htab->elf.dynobj = abfd;
2818 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2822 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2826 return create_sdata_sym (htab, lsect);
2829 /* Find a linker generated pointer with a given addend and type. */
2831 static elf_linker_section_pointers_t *
2832 elf_find_pointer_linker_section
2833 (elf_linker_section_pointers_t *linker_pointers,
2835 elf_linker_section_t *lsect)
2837 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2838 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2839 return linker_pointers;
2844 /* Allocate a pointer to live in a linker created section. */
2847 elf_create_pointer_linker_section (bfd *abfd,
2848 elf_linker_section_t *lsect,
2849 struct elf_link_hash_entry *h,
2850 const Elf_Internal_Rela *rel)
2852 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2853 elf_linker_section_pointers_t *linker_section_ptr;
2854 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2857 BFD_ASSERT (lsect != NULL);
2859 /* Is this a global symbol? */
2862 struct ppc_elf_link_hash_entry *eh;
2864 /* Has this symbol already been allocated? If so, our work is done. */
2865 eh = (struct ppc_elf_link_hash_entry *) h;
2866 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2871 ptr_linker_section_ptr = &eh->linker_section_pointer;
2875 /* Allocation of a pointer to a local symbol. */
2876 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2878 /* Allocate a table to hold the local symbols if first time. */
2881 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2884 amt *= sizeof (elf_linker_section_pointers_t *);
2885 ptr = bfd_zalloc (abfd, amt);
2890 elf_local_ptr_offsets (abfd) = ptr;
2893 /* Has this symbol already been allocated? If so, our work is done. */
2894 if (elf_find_pointer_linker_section (ptr[r_symndx],
2899 ptr_linker_section_ptr = &ptr[r_symndx];
2902 /* Allocate space for a pointer in the linker section, and allocate
2903 a new pointer record from internal memory. */
2904 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2905 amt = sizeof (elf_linker_section_pointers_t);
2906 linker_section_ptr = bfd_alloc (abfd, amt);
2908 if (!linker_section_ptr)
2911 linker_section_ptr->next = *ptr_linker_section_ptr;
2912 linker_section_ptr->addend = rel->r_addend;
2913 linker_section_ptr->lsect = lsect;
2914 *ptr_linker_section_ptr = linker_section_ptr;
2916 linker_section_ptr->offset = lsect->section->size;
2917 lsect->section->size += 4;
2921 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2922 lsect->name, (long) linker_section_ptr->offset,
2923 (long) lsect->section->size);
2930 update_local_sym_info (bfd *abfd,
2931 Elf_Internal_Shdr *symtab_hdr,
2932 unsigned long r_symndx,
2935 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2936 char *local_got_tls_masks;
2938 if (local_got_refcounts == NULL)
2940 bfd_size_type size = symtab_hdr->sh_info;
2942 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2943 local_got_refcounts = bfd_zalloc (abfd, size);
2944 if (local_got_refcounts == NULL)
2946 elf_local_got_refcounts (abfd) = local_got_refcounts;
2949 local_got_refcounts[r_symndx] += 1;
2950 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2951 local_got_tls_masks[r_symndx] |= tls_type;
2956 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2957 asection *sec, bfd_vma addend)
2959 struct plt_entry *ent;
2963 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2964 if (ent->sec == sec && ent->addend == addend)
2968 bfd_size_type amt = sizeof (*ent);
2969 ent = bfd_alloc (abfd, amt);
2972 ent->next = h->plt.plist;
2974 ent->addend = addend;
2975 ent->plt.refcount = 0;
2978 ent->plt.refcount += 1;
2982 static struct plt_entry *
2983 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2985 struct plt_entry *ent;
2989 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2990 if (ent->sec == sec && ent->addend == addend)
2996 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2998 (*_bfd_error_handler)
2999 (_("%B: relocation %s cannot be used when making a shared object"),
3001 ppc_elf_howto_table[r_type]->name);
3002 bfd_set_error (bfd_error_bad_value);
3005 /* Look through the relocs for a section during the first phase, and
3006 allocate space in the global offset table or procedure linkage
3010 ppc_elf_check_relocs (bfd *abfd,
3011 struct bfd_link_info *info,
3013 const Elf_Internal_Rela *relocs)
3015 struct ppc_elf_link_hash_table *htab;
3016 Elf_Internal_Shdr *symtab_hdr;
3017 struct elf_link_hash_entry **sym_hashes;
3018 const Elf_Internal_Rela *rel;
3019 const Elf_Internal_Rela *rel_end;
3020 asection *got2, *sreloc;
3022 if (info->relocatable)
3025 /* Don't do anything special with non-loaded, non-alloced sections.
3026 In particular, any relocs in such sections should not affect GOT
3027 and PLT reference counting (ie. we don't allow them to create GOT
3028 or PLT entries), there's no possibility or desire to optimize TLS
3029 relocs, and there's not much point in propagating relocs to shared
3030 libs that the dynamic linker won't relocate. */
3031 if ((sec->flags & SEC_ALLOC) == 0)
3035 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3039 /* Initialize howto table if not already done. */
3040 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3041 ppc_elf_howto_init ();
3043 htab = ppc_elf_hash_table (info);
3044 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3045 sym_hashes = elf_sym_hashes (abfd);
3046 got2 = bfd_get_section_by_name (abfd, ".got2");
3049 rel_end = relocs + sec->reloc_count;
3050 for (rel = relocs; rel < rel_end; rel++)
3052 unsigned long r_symndx;
3053 enum elf_ppc_reloc_type r_type;
3054 struct elf_link_hash_entry *h;
3057 r_symndx = ELF32_R_SYM (rel->r_info);
3058 if (r_symndx < symtab_hdr->sh_info)
3062 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3063 while (h->root.type == bfd_link_hash_indirect
3064 || h->root.type == bfd_link_hash_warning)
3065 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3068 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3069 This shows up in particular in an R_PPC_ADDR32 in the eabi
3072 && htab->got == NULL
3073 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3075 if (htab->elf.dynobj == NULL)
3076 htab->elf.dynobj = abfd;
3077 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3079 BFD_ASSERT (h == htab->elf.hgot);
3082 r_type = ELF32_R_TYPE (rel->r_info);
3085 case R_PPC_GOT_TLSLD16:
3086 case R_PPC_GOT_TLSLD16_LO:
3087 case R_PPC_GOT_TLSLD16_HI:
3088 case R_PPC_GOT_TLSLD16_HA:
3089 htab->tlsld_got.refcount += 1;
3090 tls_type = TLS_TLS | TLS_LD;
3093 case R_PPC_GOT_TLSGD16:
3094 case R_PPC_GOT_TLSGD16_LO:
3095 case R_PPC_GOT_TLSGD16_HI:
3096 case R_PPC_GOT_TLSGD16_HA:
3097 tls_type = TLS_TLS | TLS_GD;
3100 case R_PPC_GOT_TPREL16:
3101 case R_PPC_GOT_TPREL16_LO:
3102 case R_PPC_GOT_TPREL16_HI:
3103 case R_PPC_GOT_TPREL16_HA:
3105 info->flags |= DF_STATIC_TLS;
3106 tls_type = TLS_TLS | TLS_TPREL;
3109 case R_PPC_GOT_DTPREL16:
3110 case R_PPC_GOT_DTPREL16_LO:
3111 case R_PPC_GOT_DTPREL16_HI:
3112 case R_PPC_GOT_DTPREL16_HA:
3113 tls_type = TLS_TLS | TLS_DTPREL;
3115 sec->has_tls_reloc = 1;
3118 /* GOT16 relocations */
3120 case R_PPC_GOT16_LO:
3121 case R_PPC_GOT16_HI:
3122 case R_PPC_GOT16_HA:
3123 /* This symbol requires a global offset table entry. */
3124 if (htab->got == NULL)
3126 if (htab->elf.dynobj == NULL)
3127 htab->elf.dynobj = abfd;
3128 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3133 h->got.refcount += 1;
3134 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3137 /* This is a global offset table entry for a local symbol. */
3138 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3142 /* Indirect .sdata relocation. */
3143 case R_PPC_EMB_SDAI16:
3146 bad_shared_reloc (abfd, r_type);
3149 if (htab->sdata[0].section == NULL
3150 && !ppc_elf_create_linker_section (abfd, info, 0,
3153 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3158 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3159 h->non_got_ref = TRUE;
3163 /* Indirect .sdata2 relocation. */
3164 case R_PPC_EMB_SDA2I16:
3167 bad_shared_reloc (abfd, r_type);
3170 if (htab->sdata[1].section == NULL
3171 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3174 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3179 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3180 h->non_got_ref = TRUE;
3184 case R_PPC_SDAREL16:
3187 bad_shared_reloc (abfd, r_type);
3190 if (htab->sdata[0].sym == NULL
3191 && !create_sdata_sym (htab, &htab->sdata[0]))
3195 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3196 h->non_got_ref = TRUE;
3200 case R_PPC_EMB_SDA2REL:
3203 bad_shared_reloc (abfd, r_type);
3206 if (htab->sdata[1].sym == NULL
3207 && !create_sdata_sym (htab, &htab->sdata[1]))
3211 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3212 h->non_got_ref = TRUE;
3216 case R_PPC_EMB_SDA21:
3217 case R_PPC_EMB_RELSDA:
3220 bad_shared_reloc (abfd, r_type);
3223 if (htab->sdata[0].sym == NULL
3224 && !create_sdata_sym (htab, &htab->sdata[0]))
3226 if (htab->sdata[1].sym == NULL
3227 && !create_sdata_sym (htab, &htab->sdata[1]))
3231 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3232 h->non_got_ref = TRUE;
3236 case R_PPC_EMB_NADDR32:
3237 case R_PPC_EMB_NADDR16:
3238 case R_PPC_EMB_NADDR16_LO:
3239 case R_PPC_EMB_NADDR16_HI:
3240 case R_PPC_EMB_NADDR16_HA:
3243 bad_shared_reloc (abfd, r_type);
3247 h->non_got_ref = TRUE;
3251 case R_PPC_PLTREL24:
3252 case R_PPC_PLTREL32:
3253 case R_PPC_PLT16_LO:
3254 case R_PPC_PLT16_HI:
3255 case R_PPC_PLT16_HA:
3257 fprintf (stderr, "Reloc requires a PLT entry\n");
3259 /* This symbol requires a procedure linkage table entry. We
3260 actually build the entry in finish_dynamic_symbol,
3261 because this might be a case of linking PIC code without
3262 linking in any dynamic objects, in which case we don't
3263 need to generate a procedure linkage table after all. */
3267 /* It does not make sense to have a procedure linkage
3268 table entry for a local symbol. */
3269 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3273 (long) rel->r_offset,
3274 ppc_elf_howto_table[r_type]->name);
3275 bfd_set_error (bfd_error_bad_value);
3280 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3283 if (!update_plt_info (abfd, h, got2, addend))
3288 /* The following relocations don't need to propagate the
3289 relocation if linking a shared object since they are
3290 section relative. */
3292 case R_PPC_SECTOFF_LO:
3293 case R_PPC_SECTOFF_HI:
3294 case R_PPC_SECTOFF_HA:
3295 case R_PPC_DTPREL16:
3296 case R_PPC_DTPREL16_LO:
3297 case R_PPC_DTPREL16_HI:
3298 case R_PPC_DTPREL16_HA:
3303 case R_PPC_REL16_LO:
3304 case R_PPC_REL16_HI:
3305 case R_PPC_REL16_HA:
3306 htab->can_use_new_plt = 1;
3309 /* These are just markers. */
3311 case R_PPC_EMB_MRKREF:
3316 /* These should only appear in dynamic objects. */
3318 case R_PPC_GLOB_DAT:
3319 case R_PPC_JMP_SLOT:
3320 case R_PPC_RELATIVE:
3323 /* These aren't handled yet. We'll report an error later. */
3325 case R_PPC_EMB_RELSEC16:
3326 case R_PPC_EMB_RELST_LO:
3327 case R_PPC_EMB_RELST_HI:
3328 case R_PPC_EMB_RELST_HA:
3329 case R_PPC_EMB_BIT_FLD:
3332 /* This refers only to functions defined in the shared library. */
3333 case R_PPC_LOCAL24PC:
3334 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3335 htab->plt_type = PLT_OLD;
3338 /* This relocation describes the C++ object vtable hierarchy.
3339 Reconstruct it for later use during GC. */
3340 case R_PPC_GNU_VTINHERIT:
3341 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3345 /* This relocation describes which C++ vtable entries are actually
3346 used. Record for later use during GC. */
3347 case R_PPC_GNU_VTENTRY:
3348 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3352 /* We shouldn't really be seeing these. */
3355 info->flags |= DF_STATIC_TLS;
3359 case R_PPC_DTPMOD32:
3360 case R_PPC_DTPREL32:
3364 case R_PPC_TPREL16_LO:
3365 case R_PPC_TPREL16_HI:
3366 case R_PPC_TPREL16_HA:
3368 info->flags |= DF_STATIC_TLS;
3374 && (sec->flags & SEC_CODE) != 0
3375 && (info->shared || info->pie)
3376 && htab->plt_type == PLT_UNSET)
3378 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3379 the start of a function, which assembles to a REL32
3380 reference to .got2. If we detect one of these, then
3381 force the old PLT layout because the linker cannot
3382 reliably deduce the GOT pointer value needed for
3386 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3389 htab->plt_type = PLT_OLD;
3391 if (h == NULL || h == htab->elf.hgot)
3397 case R_PPC_REL14_BRTAKEN:
3398 case R_PPC_REL14_BRNTAKEN:
3401 if (h == htab->elf.hgot)
3403 if (htab->plt_type == PLT_UNSET)
3404 htab->plt_type = PLT_OLD;
3412 case R_PPC_ADDR16_LO:
3413 case R_PPC_ADDR16_HI:
3414 case R_PPC_ADDR16_HA:
3416 case R_PPC_ADDR14_BRTAKEN:
3417 case R_PPC_ADDR14_BRNTAKEN:
3421 if (h != NULL && !info->shared)
3423 /* We may need a plt entry if the symbol turns out to be
3424 a function defined in a dynamic object. */
3425 if (!update_plt_info (abfd, h, NULL, 0))
3428 /* We may need a copy reloc too. */
3433 /* If we are creating a shared library, and this is a reloc
3434 against a global symbol, or a non PC relative reloc
3435 against a local symbol, then we need to copy the reloc
3436 into the shared library. However, if we are linking with
3437 -Bsymbolic, we do not need to copy a reloc against a
3438 global symbol which is defined in an object we are
3439 including in the link (i.e., DEF_REGULAR is set). At
3440 this point we have not seen all the input files, so it is
3441 possible that DEF_REGULAR is not set now but will be set
3442 later (it is never cleared). In case of a weak definition,
3443 DEF_REGULAR may be cleared later by a strong definition in
3444 a shared library. We account for that possibility below by
3445 storing information in the dyn_relocs field of the hash
3446 table entry. A similar situation occurs when creating
3447 shared libraries and symbol visibility changes render the
3450 If on the other hand, we are creating an executable, we
3451 may need to keep relocations for symbols satisfied by a
3452 dynamic library if we manage to avoid copy relocs for the
3455 && (MUST_BE_DYN_RELOC (r_type)
3457 && (! info->symbolic
3458 || h->root.type == bfd_link_hash_defweak
3459 || !h->def_regular))))
3460 || (ELIMINATE_COPY_RELOCS
3463 && (h->root.type == bfd_link_hash_defweak
3464 || !h->def_regular)))
3466 struct ppc_elf_dyn_relocs *p;
3467 struct ppc_elf_dyn_relocs **head;
3471 "ppc_elf_check_relocs needs to "
3472 "create relocation for %s\n",
3473 (h && h->root.root.string
3474 ? h->root.root.string : "<unknown>"));
3480 name = (bfd_elf_string_from_elf_section
3482 elf_elfheader (abfd)->e_shstrndx,
3483 elf_section_data (sec)->rel_hdr.sh_name));
3487 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3488 && strcmp (bfd_get_section_name (abfd, sec),
3491 if (htab->elf.dynobj == NULL)
3492 htab->elf.dynobj = abfd;
3493 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3498 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3499 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3500 | SEC_ALLOC | SEC_LOAD);
3501 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3505 || ! bfd_set_section_alignment (htab->elf.dynobj,
3509 elf_section_data (sec)->sreloc = sreloc;
3512 /* If this is a global symbol, we count the number of
3513 relocations we need for this symbol. */
3516 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3520 /* Track dynamic relocs needed for local syms too.
3521 We really need local syms available to do this
3527 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3532 vpp = &elf_section_data (s)->local_dynrel;
3533 head = (struct ppc_elf_dyn_relocs **) vpp;
3537 if (p == NULL || p->sec != sec)
3539 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3550 if (!MUST_BE_DYN_RELOC (r_type))
3561 /* Merge backend specific data from an object file to the output
3562 object file when linking. */
3565 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3571 if (!is_ppc_elf_target (ibfd->xvec)
3572 || !is_ppc_elf_target (obfd->xvec))
3575 /* Check if we have the same endianess. */
3576 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3579 new_flags = elf_elfheader (ibfd)->e_flags;
3580 old_flags = elf_elfheader (obfd)->e_flags;
3581 if (!elf_flags_init (obfd))
3583 /* First call, no flags set. */
3584 elf_flags_init (obfd) = TRUE;
3585 elf_elfheader (obfd)->e_flags = new_flags;
3588 /* Compatible flags are ok. */
3589 else if (new_flags == old_flags)
3592 /* Incompatible flags. */
3595 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3596 to be linked with either. */
3598 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3599 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3602 (*_bfd_error_handler)
3603 (_("%B: compiled with -mrelocatable and linked with "
3604 "modules compiled normally"), ibfd);
3606 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3607 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3610 (*_bfd_error_handler)
3611 (_("%B: compiled normally and linked with "
3612 "modules compiled with -mrelocatable"), ibfd);
3615 /* The output is -mrelocatable-lib iff both the input files are. */
3616 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3617 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3619 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3620 but each input file is either -mrelocatable or -mrelocatable-lib. */
3621 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3622 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3623 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3624 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3626 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3627 any module uses it. */
3628 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3630 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3631 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3633 /* Warn about any other mismatches. */
3634 if (new_flags != old_flags)
3637 (*_bfd_error_handler)
3638 (_("%B: uses different e_flags (0x%lx) fields "
3639 "than previous modules (0x%lx)"),
3640 ibfd, (long) new_flags, (long) old_flags);
3645 bfd_set_error (bfd_error_bad_value);
3653 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3654 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3656 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3657 struct bfd_link_info *info,
3661 struct ppc_elf_link_hash_table *htab;
3664 htab = ppc_elf_hash_table (info);
3666 if (htab->plt_type == PLT_UNSET)
3667 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3668 ? PLT_OLD : PLT_NEW);
3670 htab->emit_stub_syms = emit_stub_syms;
3672 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3674 if (htab->plt_type == PLT_NEW)
3676 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3677 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3679 /* The new PLT is a loaded section. */
3680 if (htab->plt != NULL
3681 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3684 /* The new GOT is not executable. */
3685 if (htab->got != NULL
3686 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3691 /* Stop an unused .glink section from affecting .text alignment. */
3692 if (htab->glink != NULL
3693 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3696 return htab->plt_type == PLT_NEW;
3699 /* Return the section that should be marked against GC for a given
3703 ppc_elf_gc_mark_hook (asection *sec,
3704 struct bfd_link_info *info,
3705 Elf_Internal_Rela *rel,
3706 struct elf_link_hash_entry *h,
3707 Elf_Internal_Sym *sym)
3710 switch (ELF32_R_TYPE (rel->r_info))
3712 case R_PPC_GNU_VTINHERIT:
3713 case R_PPC_GNU_VTENTRY:
3717 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3720 /* Update the got, plt and dynamic reloc reference counts for the
3721 section being removed. */
3724 ppc_elf_gc_sweep_hook (bfd *abfd,
3725 struct bfd_link_info *info,
3727 const Elf_Internal_Rela *relocs)
3729 struct ppc_elf_link_hash_table *htab;
3730 Elf_Internal_Shdr *symtab_hdr;
3731 struct elf_link_hash_entry **sym_hashes;
3732 bfd_signed_vma *local_got_refcounts;
3733 const Elf_Internal_Rela *rel, *relend;
3736 if ((sec->flags & SEC_ALLOC) == 0)
3739 elf_section_data (sec)->local_dynrel = NULL;
3741 htab = ppc_elf_hash_table (info);
3742 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3743 sym_hashes = elf_sym_hashes (abfd);
3744 local_got_refcounts = elf_local_got_refcounts (abfd);
3745 got2 = bfd_get_section_by_name (abfd, ".got2");
3747 relend = relocs + sec->reloc_count;
3748 for (rel = relocs; rel < relend; rel++)
3750 unsigned long r_symndx;
3751 enum elf_ppc_reloc_type r_type;
3752 struct elf_link_hash_entry *h = NULL;
3754 r_symndx = ELF32_R_SYM (rel->r_info);
3755 if (r_symndx >= symtab_hdr->sh_info)
3757 struct ppc_elf_dyn_relocs **pp, *p;
3758 struct ppc_elf_link_hash_entry *eh;
3760 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3761 while (h->root.type == bfd_link_hash_indirect
3762 || h->root.type == bfd_link_hash_warning)
3763 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3764 eh = (struct ppc_elf_link_hash_entry *) h;
3766 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3769 /* Everything must go for SEC. */
3775 r_type = ELF32_R_TYPE (rel->r_info);
3778 case R_PPC_GOT_TLSLD16:
3779 case R_PPC_GOT_TLSLD16_LO:
3780 case R_PPC_GOT_TLSLD16_HI:
3781 case R_PPC_GOT_TLSLD16_HA:
3782 htab->tlsld_got.refcount -= 1;
3785 case R_PPC_GOT_TLSGD16:
3786 case R_PPC_GOT_TLSGD16_LO:
3787 case R_PPC_GOT_TLSGD16_HI:
3788 case R_PPC_GOT_TLSGD16_HA:
3789 case R_PPC_GOT_TPREL16:
3790 case R_PPC_GOT_TPREL16_LO:
3791 case R_PPC_GOT_TPREL16_HI:
3792 case R_PPC_GOT_TPREL16_HA:
3793 case R_PPC_GOT_DTPREL16:
3794 case R_PPC_GOT_DTPREL16_LO:
3795 case R_PPC_GOT_DTPREL16_HI:
3796 case R_PPC_GOT_DTPREL16_HA:
3798 case R_PPC_GOT16_LO:
3799 case R_PPC_GOT16_HI:
3800 case R_PPC_GOT16_HA:
3803 if (h->got.refcount > 0)
3806 else if (local_got_refcounts != NULL)
3808 if (local_got_refcounts[r_symndx] > 0)
3809 local_got_refcounts[r_symndx]--;
3815 case R_PPC_REL14_BRTAKEN:
3816 case R_PPC_REL14_BRNTAKEN:
3818 if (h == NULL || h == htab->elf.hgot)
3825 case R_PPC_ADDR16_LO:
3826 case R_PPC_ADDR16_HI:
3827 case R_PPC_ADDR16_HA:
3829 case R_PPC_ADDR14_BRTAKEN:
3830 case R_PPC_ADDR14_BRNTAKEN:
3837 case R_PPC_PLTREL24:
3838 case R_PPC_PLTREL32:
3839 case R_PPC_PLT16_LO:
3840 case R_PPC_PLT16_HI:
3841 case R_PPC_PLT16_HA:
3844 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3845 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3846 if (ent->plt.refcount > 0)
3847 ent->plt.refcount -= 1;
3858 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3861 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3863 struct ppc_elf_link_hash_table *htab;
3865 htab = ppc_elf_hash_table (info);
3866 if (htab->plt_type == PLT_NEW
3867 && htab->plt != NULL
3868 && htab->plt->output_section != NULL)
3870 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3871 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3874 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3875 FALSE, FALSE, TRUE);
3876 return _bfd_elf_tls_setup (obfd, info);
3879 /* Run through all the TLS relocs looking for optimization
3883 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3884 struct bfd_link_info *info)
3888 struct ppc_elf_link_hash_table *htab;
3890 if (info->relocatable || info->shared)
3893 htab = ppc_elf_hash_table (info);
3894 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3896 Elf_Internal_Sym *locsyms = NULL;
3897 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3899 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3900 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3902 Elf_Internal_Rela *relstart, *rel, *relend;
3903 int expecting_tls_get_addr;
3905 /* Read the relocations. */
3906 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3908 if (relstart == NULL)
3911 expecting_tls_get_addr = 0;
3912 relend = relstart + sec->reloc_count;
3913 for (rel = relstart; rel < relend; rel++)
3915 enum elf_ppc_reloc_type r_type;
3916 unsigned long r_symndx;
3917 struct elf_link_hash_entry *h = NULL;
3919 char tls_set, tls_clear;
3920 bfd_boolean is_local;
3922 r_symndx = ELF32_R_SYM (rel->r_info);
3923 if (r_symndx >= symtab_hdr->sh_info)
3925 struct elf_link_hash_entry **sym_hashes;
3927 sym_hashes = elf_sym_hashes (ibfd);
3928 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3929 while (h->root.type == bfd_link_hash_indirect
3930 || h->root.type == bfd_link_hash_warning)
3931 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3939 r_type = ELF32_R_TYPE (rel->r_info);
3942 case R_PPC_GOT_TLSLD16:
3943 case R_PPC_GOT_TLSLD16_LO:
3944 case R_PPC_GOT_TLSLD16_HI:
3945 case R_PPC_GOT_TLSLD16_HA:
3946 /* These relocs should never be against a symbol
3947 defined in a shared lib. Leave them alone if
3948 that turns out to be the case. */
3949 expecting_tls_get_addr = 0;
3950 htab->tlsld_got.refcount -= 1;
3957 expecting_tls_get_addr = 1;
3960 case R_PPC_GOT_TLSGD16:
3961 case R_PPC_GOT_TLSGD16_LO:
3962 case R_PPC_GOT_TLSGD16_HI:
3963 case R_PPC_GOT_TLSGD16_HA:
3969 tls_set = TLS_TLS | TLS_TPRELGD;
3971 expecting_tls_get_addr = 1;
3974 case R_PPC_GOT_TPREL16:
3975 case R_PPC_GOT_TPREL16_LO:
3976 case R_PPC_GOT_TPREL16_HI:
3977 case R_PPC_GOT_TPREL16_HA:
3978 expecting_tls_get_addr = 0;
3983 tls_clear = TLS_TPREL;
3990 case R_PPC_REL14_BRTAKEN:
3991 case R_PPC_REL14_BRNTAKEN:
3993 if (expecting_tls_get_addr
3995 && h == htab->tls_get_addr)
3997 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3998 if (ent != NULL && ent->plt.refcount > 0)
3999 ent->plt.refcount -= 1;
4001 expecting_tls_get_addr = 0;
4005 expecting_tls_get_addr = 0;
4013 /* We managed to get rid of a got entry. */
4014 if (h->got.refcount > 0)
4015 h->got.refcount -= 1;
4017 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4021 Elf_Internal_Sym *sym;
4022 bfd_signed_vma *lgot_refs;
4025 if (locsyms == NULL)
4027 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4028 if (locsyms == NULL)
4029 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4030 symtab_hdr->sh_info,
4031 0, NULL, NULL, NULL);
4032 if (locsyms == NULL)
4034 if (elf_section_data (sec)->relocs != relstart)
4039 sym = locsyms + r_symndx;
4040 lgot_refs = elf_local_got_refcounts (ibfd);
4041 if (lgot_refs == NULL)
4045 /* We managed to get rid of a got entry. */
4046 if (lgot_refs[r_symndx] > 0)
4047 lgot_refs[r_symndx] -= 1;
4049 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4050 tls_mask = &lgot_masks[r_symndx];
4053 *tls_mask |= tls_set;
4054 *tls_mask &= ~tls_clear;
4057 if (elf_section_data (sec)->relocs != relstart)
4062 && (symtab_hdr->contents != (unsigned char *) locsyms))
4064 if (!info->keep_memory)
4067 symtab_hdr->contents = (unsigned char *) locsyms;
4073 /* Adjust a symbol defined by a dynamic object and referenced by a
4074 regular object. The current definition is in some section of the
4075 dynamic object, but we're not including those sections. We have to
4076 change the definition to something the rest of the link can
4080 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4081 struct elf_link_hash_entry *h)
4083 struct ppc_elf_link_hash_table *htab;
4085 unsigned int power_of_two;
4088 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4089 h->root.root.string);
4092 /* Make sure we know what is going on here. */
4093 htab = ppc_elf_hash_table (info);
4094 BFD_ASSERT (htab->elf.dynobj != NULL
4096 || h->u.weakdef != NULL
4099 && !h->def_regular)));
4101 /* Deal with function syms. */
4102 if (h->type == STT_FUNC
4105 /* Clear procedure linkage table information for any symbol that
4106 won't need a .plt entry. */
4107 struct plt_entry *ent;
4108 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4109 if (ent->plt.refcount > 0)
4112 || SYMBOL_CALLS_LOCAL (info, h)
4113 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4114 && h->root.type == bfd_link_hash_undefweak))
4116 /* A PLT entry is not required/allowed when:
4118 1. We are not using ld.so; because then the PLT entry
4119 can't be set up, so we can't use one. In this case,
4120 ppc_elf_adjust_dynamic_symbol won't even be called.
4122 2. GC has rendered the entry unused.
4124 3. We know for certain that a call to this symbol
4125 will go to this object, or will remain undefined. */
4126 h->plt.plist = NULL;
4132 h->plt.plist = NULL;
4134 /* If this is a weak symbol, and there is a real definition, the
4135 processor independent code will have arranged for us to see the
4136 real definition first, and we can just use the same value. */
4137 if (h->u.weakdef != NULL)
4139 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4140 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4141 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4142 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4143 if (ELIMINATE_COPY_RELOCS)
4144 h->non_got_ref = h->u.weakdef->non_got_ref;
4148 /* This is a reference to a symbol defined by a dynamic object which
4149 is not a function. */
4151 /* If we are creating a shared library, we must presume that the
4152 only references to the symbol are via the global offset table.
4153 For such cases we need not do anything here; the relocations will
4154 be handled correctly by relocate_section. */
4158 /* If there are no references to this symbol that do not use the
4159 GOT, we don't need to generate a copy reloc. */
4160 if (!h->non_got_ref)
4163 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4164 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4165 do this if there are any small data relocations. */
4166 if (ELIMINATE_COPY_RELOCS
4167 && !ppc_elf_hash_entry (h)->has_sda_refs)
4169 struct ppc_elf_dyn_relocs *p;
4170 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4172 s = p->sec->output_section;
4173 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4186 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4187 h->root.root.string);
4191 /* We must allocate the symbol in our .dynbss section, which will
4192 become part of the .bss section of the executable. There will be
4193 an entry for this symbol in the .dynsym section. The dynamic
4194 object will contain position independent code, so all references
4195 from the dynamic object to this symbol will go through the global
4196 offset table. The dynamic linker will use the .dynsym entry to
4197 determine the address it must put in the global offset table, so
4198 both the dynamic object and the regular object will refer to the
4199 same memory location for the variable.
4201 Of course, if the symbol is referenced using SDAREL relocs, we
4202 must instead allocate it in .sbss. */
4204 if (ppc_elf_hash_entry (h)->has_sda_refs)
4208 BFD_ASSERT (s != NULL);
4210 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4211 copy the initial value out of the dynamic object and into the
4212 runtime process image. We need to remember the offset into the
4213 .rela.bss section we are going to use. */
4214 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4218 if (ppc_elf_hash_entry (h)->has_sda_refs)
4219 srel = htab->relsbss;
4221 srel = htab->relbss;
4222 BFD_ASSERT (srel != NULL);
4223 srel->size += sizeof (Elf32_External_Rela);
4227 /* We need to figure out the alignment required for this symbol. I
4228 have no idea how ELF linkers handle this. */
4229 power_of_two = bfd_log2 (h->size);
4230 if (power_of_two > 4)
4233 /* Apply the required alignment. */
4234 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4235 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4237 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4241 /* Define the symbol as being at this point in the section. */
4242 h->root.u.def.section = s;
4243 h->root.u.def.value = s->size;
4245 /* Increment the section size to make room for the symbol. */
4251 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4252 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4253 specifying the addend on the plt relocation. For -fpic code, the sym
4254 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4255 xxxxxxxx.got2.plt_pic32.<callee>. */
4258 add_stub_sym (struct plt_entry *ent,
4259 struct elf_link_hash_entry *h,
4260 struct bfd_link_info *info)
4262 struct elf_link_hash_entry *sh;
4263 size_t len1, len2, len3;
4266 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4268 if (info->shared || info->pie)
4269 stub = ".plt_pic32.";
4271 stub = ".plt_call32.";
4273 len1 = strlen (h->root.root.string);
4274 len2 = strlen (stub);
4277 len3 = strlen (ent->sec->name);
4278 name = bfd_malloc (len1 + len2 + len3 + 9);
4281 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4283 memcpy (name + 8, ent->sec->name, len3);
4284 memcpy (name + 8 + len3, stub, len2);
4285 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4286 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4289 if (sh->root.type == bfd_link_hash_new)
4291 sh->root.type = bfd_link_hash_defined;
4292 sh->root.u.def.section = htab->glink;
4293 sh->root.u.def.value = ent->glink_offset;
4294 sh->ref_regular = 1;
4295 sh->def_regular = 1;
4296 sh->ref_regular_nonweak = 1;
4297 sh->forced_local = 1;
4303 /* Allocate NEED contiguous space in .got, and return the offset.
4304 Handles allocation of the got header when crossing 32k. */
4307 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4310 unsigned int max_before_header;
4312 if (htab->plt_type == PLT_VXWORKS)
4314 where = htab->got->size;
4315 htab->got->size += need;
4319 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4320 if (need <= htab->got_gap)
4322 where = max_before_header - htab->got_gap;
4323 htab->got_gap -= need;
4327 if (htab->got->size + need > max_before_header
4328 && htab->got->size <= max_before_header)
4330 htab->got_gap = max_before_header - htab->got->size;
4331 htab->got->size = max_before_header + htab->got_header_size;
4333 where = htab->got->size;
4334 htab->got->size += need;
4340 /* Allocate space in associated reloc sections for dynamic relocs. */
4343 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4345 struct bfd_link_info *info = inf;
4346 struct ppc_elf_link_hash_entry *eh;
4347 struct ppc_elf_link_hash_table *htab;
4348 struct ppc_elf_dyn_relocs *p;
4350 if (h->root.type == bfd_link_hash_indirect)
4353 if (h->root.type == bfd_link_hash_warning)
4354 /* When warning symbols are created, they **replace** the "real"
4355 entry in the hash table, thus we never get to see the real
4356 symbol in a hash traversal. So look at it now. */
4357 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4359 htab = ppc_elf_hash_table (info);
4360 if (htab->elf.dynamic_sections_created)
4362 struct plt_entry *ent;
4363 bfd_boolean doneone = FALSE;
4364 bfd_vma plt_offset = 0, glink_offset = 0;
4366 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4367 if (ent->plt.refcount > 0)
4369 /* Make sure this symbol is output as a dynamic symbol. */
4370 if (h->dynindx == -1
4371 && !h->forced_local)
4373 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4378 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4380 asection *s = htab->plt;
4382 if (htab->plt_type == PLT_NEW)
4386 plt_offset = s->size;
4389 ent->plt.offset = plt_offset;
4392 if (!doneone || info->shared || info->pie)
4394 glink_offset = s->size;
4395 s->size += GLINK_ENTRY_SIZE;
4401 h->root.u.def.section = s;
4402 h->root.u.def.value = glink_offset;
4404 ent->glink_offset = glink_offset;
4406 if (htab->emit_stub_syms
4407 && !add_stub_sym (ent, h, info))
4414 /* If this is the first .plt entry, make room
4415 for the special first entry. */
4417 s->size += htab->plt_initial_entry_size;
4419 /* The PowerPC PLT is actually composed of two
4420 parts, the first part is 2 words (for a load
4421 and a jump), and then there is a remaining
4422 word available at the end. */
4423 plt_offset = (htab->plt_initial_entry_size
4424 + (htab->plt_slot_size
4426 - htab->plt_initial_entry_size)
4427 / htab->plt_entry_size)));
4429 /* If this symbol is not defined in a regular
4430 file, and we are not generating a shared
4431 library, then set the symbol to this location
4432 in the .plt. This is required to make
4433 function pointers compare as equal between
4434 the normal executable and the shared library. */
4438 h->root.u.def.section = s;
4439 h->root.u.def.value = plt_offset;
4442 /* Make room for this entry. */
4443 s->size += htab->plt_entry_size;
4444 /* After the 8192nd entry, room for two entries
4446 if (htab->plt_type == PLT_OLD
4447 && (s->size - htab->plt_initial_entry_size)
4448 / htab->plt_entry_size
4449 > PLT_NUM_SINGLE_ENTRIES)
4450 s->size += htab->plt_entry_size;
4452 ent->plt.offset = plt_offset;
4455 /* We also need to make an entry in the .rela.plt section. */
4458 htab->relplt->size += sizeof (Elf32_External_Rela);
4460 if (htab->plt_type == PLT_VXWORKS)
4462 /* Allocate space for the unloaded relocations. */
4466 == (bfd_vma) htab->plt_initial_entry_size)
4468 htab->srelplt2->size
4469 += sizeof (Elf32_External_Rela)
4470 * VXWORKS_PLTRESOLVE_RELOCS;
4473 htab->srelplt2->size
4474 += sizeof (Elf32_External_Rela)
4475 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4478 /* Every PLT entry has an associated GOT entry in
4480 htab->sgotplt->size += 4;
4486 ent->plt.offset = (bfd_vma) -1;
4490 h->plt.plist = NULL;
4497 h->plt.plist = NULL;
4501 eh = (struct ppc_elf_link_hash_entry *) h;
4502 if (eh->elf.got.refcount > 0)
4504 /* Make sure this symbol is output as a dynamic symbol. */
4505 if (eh->elf.dynindx == -1
4506 && !eh->elf.forced_local)
4508 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4512 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4513 && !eh->elf.def_dynamic)
4514 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4515 eh->elf.got.offset = (bfd_vma) -1;
4519 unsigned int need = 0;
4520 if ((eh->tls_mask & TLS_TLS) != 0)
4522 if ((eh->tls_mask & TLS_LD) != 0)
4524 if ((eh->tls_mask & TLS_GD) != 0)
4526 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4528 if ((eh->tls_mask & TLS_DTPREL) != 0)
4533 eh->elf.got.offset = allocate_got (htab, need);
4534 dyn = htab->elf.dynamic_sections_created;
4536 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4537 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4538 || eh->elf.root.type != bfd_link_hash_undefweak))
4540 /* All the entries we allocated need relocs.
4541 Except LD only needs one. */
4542 if ((eh->tls_mask & TLS_LD) != 0)
4544 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4549 eh->elf.got.offset = (bfd_vma) -1;
4551 if (eh->dyn_relocs == NULL)
4554 /* In the shared -Bsymbolic case, discard space allocated for
4555 dynamic pc-relative relocs against symbols which turn out to be
4556 defined in regular objects. For the normal shared case, discard
4557 space for relocs that have become local due to symbol visibility
4562 /* Relocs that use pc_count are those that appear on a call insn,
4563 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4564 generated via assembly. We want calls to protected symbols to
4565 resolve directly to the function rather than going via the plt.
4566 If people want function pointer comparisons to work as expected
4567 then they should avoid writing weird assembly. */
4568 if (SYMBOL_CALLS_LOCAL (info, h))
4570 struct ppc_elf_dyn_relocs **pp;
4572 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4574 p->count -= p->pc_count;
4583 /* Also discard relocs on undefined weak syms with non-default
4585 if (eh->dyn_relocs != NULL
4586 && h->root.type == bfd_link_hash_undefweak)
4588 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4589 eh->dyn_relocs = NULL;
4591 /* Make sure undefined weak symbols are output as a dynamic
4593 else if (h->dynindx == -1
4594 && !h->forced_local)
4596 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4601 else if (ELIMINATE_COPY_RELOCS)
4603 /* For the non-shared case, discard space for relocs against
4604 symbols which turn out to need copy relocs or are not
4611 /* Make sure this symbol is output as a dynamic symbol.
4612 Undefined weak syms won't yet be marked as dynamic. */
4613 if (h->dynindx == -1
4614 && !h->forced_local)
4616 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4620 /* If that succeeded, we know we'll be keeping all the
4622 if (h->dynindx != -1)
4626 eh->dyn_relocs = NULL;
4631 /* Finally, allocate space. */
4632 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4634 asection *sreloc = elf_section_data (p->sec)->sreloc;
4635 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4641 /* Find any dynamic relocs that apply to read-only sections. */
4644 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4646 struct ppc_elf_dyn_relocs *p;
4648 if (h->root.type == bfd_link_hash_indirect)
4651 if (h->root.type == bfd_link_hash_warning)
4652 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4654 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4656 asection *s = p->sec->output_section;
4659 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4660 == (SEC_READONLY | SEC_ALLOC)))
4662 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4664 /* Not an error, just cut short the traversal. */
4671 /* Set the sizes of the dynamic sections. */
4674 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4675 struct bfd_link_info *info)
4677 struct ppc_elf_link_hash_table *htab;
4683 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4686 htab = ppc_elf_hash_table (info);
4687 BFD_ASSERT (htab->elf.dynobj != NULL);
4689 if (elf_hash_table (info)->dynamic_sections_created)
4691 /* Set the contents of the .interp section to the interpreter. */
4692 if (info->executable)
4694 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4695 BFD_ASSERT (s != NULL);
4696 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4697 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4701 if (htab->plt_type == PLT_OLD)
4702 htab->got_header_size = 16;
4703 else if (htab->plt_type == PLT_NEW)
4704 htab->got_header_size = 12;
4706 /* Set up .got offsets for local syms, and space for local dynamic
4708 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4710 bfd_signed_vma *local_got;
4711 bfd_signed_vma *end_local_got;
4713 bfd_size_type locsymcount;
4714 Elf_Internal_Shdr *symtab_hdr;
4716 if (!is_ppc_elf_target (ibfd->xvec))
4719 for (s = ibfd->sections; s != NULL; s = s->next)
4721 struct ppc_elf_dyn_relocs *p;
4723 for (p = ((struct ppc_elf_dyn_relocs *)
4724 elf_section_data (s)->local_dynrel);
4728 if (!bfd_is_abs_section (p->sec)
4729 && bfd_is_abs_section (p->sec->output_section))
4731 /* Input section has been discarded, either because
4732 it is a copy of a linkonce section or due to
4733 linker script /DISCARD/, so we'll be discarding
4736 else if (p->count != 0)
4738 elf_section_data (p->sec)->sreloc->size
4739 += p->count * sizeof (Elf32_External_Rela);
4740 if ((p->sec->output_section->flags
4741 & (SEC_READONLY | SEC_ALLOC))
4742 == (SEC_READONLY | SEC_ALLOC))
4743 info->flags |= DF_TEXTREL;
4748 local_got = elf_local_got_refcounts (ibfd);
4752 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4753 locsymcount = symtab_hdr->sh_info;
4754 end_local_got = local_got + locsymcount;
4755 lgot_masks = (char *) end_local_got;
4756 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4759 if (*lgot_masks == (TLS_TLS | TLS_LD))
4761 /* If just an LD reloc, we'll just use
4762 htab->tlsld_got.offset. */
4763 htab->tlsld_got.refcount += 1;
4764 *local_got = (bfd_vma) -1;
4768 unsigned int need = 0;
4769 if ((*lgot_masks & TLS_TLS) != 0)
4771 if ((*lgot_masks & TLS_GD) != 0)
4773 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4775 if ((*lgot_masks & TLS_DTPREL) != 0)
4780 *local_got = allocate_got (htab, need);
4782 htab->relgot->size += (need
4783 * (sizeof (Elf32_External_Rela) / 4));
4787 *local_got = (bfd_vma) -1;
4790 if (htab->tlsld_got.refcount > 0)
4792 htab->tlsld_got.offset = allocate_got (htab, 8);
4794 htab->relgot->size += sizeof (Elf32_External_Rela);
4797 htab->tlsld_got.offset = (bfd_vma) -1;
4799 /* Allocate space for global sym dynamic relocs. */
4800 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4802 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
4804 unsigned int g_o_t = 32768;
4806 /* If we haven't allocated the header, do so now. When we get here,
4807 for old plt/got the got size will be 0 to 32764 (not allocated),
4808 or 32780 to 65536 (header allocated). For new plt/got, the
4809 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4810 if (htab->got->size <= 32768)
4812 g_o_t = htab->got->size;
4813 if (htab->plt_type == PLT_OLD)
4815 htab->got->size += htab->got_header_size;
4818 htab->elf.hgot->root.u.def.value = g_o_t;
4821 if (htab->glink != NULL && htab->glink->size != 0)
4823 htab->glink_pltresolve = htab->glink->size;
4824 /* Space for the branch table. */
4825 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4826 /* Pad out to align the start of PLTresolve. */
4827 htab->glink->size += -htab->glink->size & 15;
4828 htab->glink->size += GLINK_PLTRESOLVE;
4830 if (htab->emit_stub_syms)
4832 struct elf_link_hash_entry *sh;
4833 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4834 TRUE, FALSE, FALSE);
4837 if (sh->root.type == bfd_link_hash_new)
4839 sh->root.type = bfd_link_hash_defined;
4840 sh->root.u.def.section = htab->glink;
4841 sh->root.u.def.value = htab->glink_pltresolve;
4842 sh->ref_regular = 1;
4843 sh->def_regular = 1;
4844 sh->ref_regular_nonweak = 1;
4845 sh->forced_local = 1;
4848 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4849 TRUE, FALSE, FALSE);
4852 if (sh->root.type == bfd_link_hash_new)
4854 sh->root.type = bfd_link_hash_defined;
4855 sh->root.u.def.section = htab->glink;
4856 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4857 sh->ref_regular = 1;
4858 sh->def_regular = 1;
4859 sh->ref_regular_nonweak = 1;
4860 sh->forced_local = 1;
4866 /* We've now determined the sizes of the various dynamic sections.
4867 Allocate memory for them. */
4869 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4871 bfd_boolean strip_section = TRUE;
4873 if ((s->flags & SEC_LINKER_CREATED) == 0)
4879 || s == htab->sgotplt
4881 || s == htab->dynbss
4882 || s == htab->dynsbss)
4884 /* We'd like to strip these sections if they aren't needed, but if
4885 we've exported dynamic symbols from them we must leave them.
4886 It's too late to tell BFD to get rid of the symbols. */
4887 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
4888 strip_section = FALSE;
4889 /* Strip this section if we don't need it; see the
4892 else if (s == htab->sdata[0].section
4893 || s == htab->sdata[1].section)
4895 /* Strip these too. */
4897 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
4901 /* Remember whether there are any relocation sections. */
4904 /* We use the reloc_count field as a counter if we need
4905 to copy relocs into the output file. */
4911 /* It's not one of our sections, so don't allocate space. */
4915 if (s->size == 0 && strip_section)
4917 /* If we don't need this section, strip it from the
4918 output file. This is mostly to handle .rela.bss and
4919 .rela.plt. We must create both sections in
4920 create_dynamic_sections, because they must be created
4921 before the linker maps input sections to output
4922 sections. The linker does that before
4923 adjust_dynamic_symbol is called, and it is that
4924 function which decides whether anything needs to go
4925 into these sections. */
4926 s->flags |= SEC_EXCLUDE;
4930 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4933 /* Allocate memory for the section contents. */
4934 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4935 if (s->contents == NULL)
4939 if (htab->elf.dynamic_sections_created)
4941 /* Add some entries to the .dynamic section. We fill in the
4942 values later, in ppc_elf_finish_dynamic_sections, but we
4943 must add the entries now so that we get the correct size for
4944 the .dynamic section. The DT_DEBUG entry is filled in by the
4945 dynamic linker and used by the debugger. */
4946 #define add_dynamic_entry(TAG, VAL) \
4947 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4949 if (info->executable)
4951 if (!add_dynamic_entry (DT_DEBUG, 0))
4955 if (htab->plt != NULL && htab->plt->size != 0)
4957 if (!add_dynamic_entry (DT_PLTGOT, 0)
4958 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4959 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4960 || !add_dynamic_entry (DT_JMPREL, 0))
4964 if (htab->glink != NULL && htab->glink->size != 0)
4966 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4972 if (!add_dynamic_entry (DT_RELA, 0)
4973 || !add_dynamic_entry (DT_RELASZ, 0)
4974 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4978 /* If any dynamic relocs apply to a read-only section, then we
4979 need a DT_TEXTREL entry. */
4980 if ((info->flags & DF_TEXTREL) == 0)
4981 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4984 if ((info->flags & DF_TEXTREL) != 0)
4986 if (!add_dynamic_entry (DT_TEXTREL, 0))
4990 #undef add_dynamic_entry
4995 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4997 static const int shared_stub_entry[] =
4999 0x7c0802a6, /* mflr 0 */
5000 0x429f0005, /* bcl 20, 31, .Lxxx */
5001 0x7d6802a6, /* mflr 11 */
5002 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5003 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5004 0x7c0803a6, /* mtlr 0 */
5005 0x7d6903a6, /* mtctr 11 */
5006 0x4e800420, /* bctr */
5009 static const int stub_entry[] =
5011 0x3d600000, /* lis 11,xxx@ha */
5012 0x396b0000, /* addi 11,11,xxx@l */
5013 0x7d6903a6, /* mtctr 11 */
5014 0x4e800420, /* bctr */
5018 ppc_elf_relax_section (bfd *abfd,
5020 struct bfd_link_info *link_info,
5025 struct one_fixup *next;
5031 Elf_Internal_Shdr *symtab_hdr;
5032 bfd_byte *contents = NULL;
5033 Elf_Internal_Sym *isymbuf = NULL;
5034 Elf_Internal_Rela *internal_relocs = NULL;
5035 Elf_Internal_Rela *irel, *irelend;
5036 struct one_fixup *fixups = NULL;
5037 bfd_boolean changed;
5038 struct ppc_elf_link_hash_table *htab;
5039 bfd_size_type trampoff;
5044 /* Nothing to do if there are no relocations, and no need to do
5045 anything with non-alloc sections. */
5046 if ((isec->flags & SEC_ALLOC) == 0
5047 || (isec->flags & SEC_RELOC) == 0
5048 || isec->reloc_count == 0)
5051 trampoff = (isec->size + 3) & (bfd_vma) -4;
5052 /* Space for a branch around any trampolines. */
5055 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5057 /* Get a copy of the native relocations. */
5058 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5059 link_info->keep_memory);
5060 if (internal_relocs == NULL)
5063 htab = ppc_elf_hash_table (link_info);
5064 got2 = bfd_get_section_by_name (abfd, ".got2");
5066 irelend = internal_relocs + isec->reloc_count;
5067 for (irel = internal_relocs; irel < irelend; irel++)
5069 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5070 bfd_vma symaddr, reladdr, toff, roff;
5072 struct one_fixup *f;
5073 size_t insn_offset = 0;
5074 bfd_vma max_branch_offset, val;
5077 unsigned char sym_type;
5082 case R_PPC_LOCAL24PC:
5083 case R_PPC_PLTREL24:
5084 max_branch_offset = 1 << 25;
5088 case R_PPC_REL14_BRTAKEN:
5089 case R_PPC_REL14_BRNTAKEN:
5090 max_branch_offset = 1 << 15;
5097 /* Get the value of the symbol referred to by the reloc. */
5098 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5100 /* A local symbol. */
5101 Elf_Internal_Sym *isym;
5103 /* Read this BFD's local symbols. */
5104 if (isymbuf == NULL)
5106 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5107 if (isymbuf == NULL)
5108 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5109 symtab_hdr->sh_info, 0,
5114 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5115 if (isym->st_shndx == SHN_UNDEF)
5116 continue; /* We can't do anything with undefined symbols. */
5117 else if (isym->st_shndx == SHN_ABS)
5118 tsec = bfd_abs_section_ptr;
5119 else if (isym->st_shndx == SHN_COMMON)
5120 tsec = bfd_com_section_ptr;
5122 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5124 toff = isym->st_value;
5125 sym_type = ELF_ST_TYPE (isym->st_info);
5129 /* Global symbol handling. */
5131 struct elf_link_hash_entry *h;
5133 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5134 h = elf_sym_hashes (abfd)[indx];
5136 while (h->root.type == bfd_link_hash_indirect
5137 || h->root.type == bfd_link_hash_warning)
5138 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5142 if (r_type == R_PPC_PLTREL24
5143 && htab->plt != NULL)
5145 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5149 if (htab->plt_type == PLT_NEW)
5152 toff = ent->glink_offset;
5157 toff = ent->plt.offset;
5163 else if (h->root.type == bfd_link_hash_defined
5164 || h->root.type == bfd_link_hash_defweak)
5166 tsec = h->root.u.def.section;
5167 toff = h->root.u.def.value;
5175 /* If the branch and target are in the same section, you have
5176 no hope of adding stubs. We'll error out later should the
5181 /* There probably isn't any reason to handle symbols in
5182 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5183 attribute for a code section, and we are only looking at
5184 branches. However, implement it correctly here as a
5185 reference for other target relax_section functions. */
5186 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5188 /* At this stage in linking, no SEC_MERGE symbol has been
5189 adjusted, so all references to such symbols need to be
5190 passed through _bfd_merged_section_offset. (Later, in
5191 relocate_section, all SEC_MERGE symbols *except* for
5192 section symbols have been adjusted.)
5194 gas may reduce relocations against symbols in SEC_MERGE
5195 sections to a relocation against the section symbol when
5196 the original addend was zero. When the reloc is against
5197 a section symbol we should include the addend in the
5198 offset passed to _bfd_merged_section_offset, since the
5199 location of interest is the original symbol. On the
5200 other hand, an access to "sym+addend" where "sym" is not
5201 a section symbol should not include the addend; Such an
5202 access is presumed to be an offset from "sym"; The
5203 location of interest is just "sym". */
5204 if (sym_type == STT_SECTION)
5205 toff += irel->r_addend;
5207 toff = _bfd_merged_section_offset (abfd, &tsec,
5208 elf_section_data (tsec)->sec_info,
5211 if (sym_type != STT_SECTION)
5212 toff += irel->r_addend;
5214 /* PLTREL24 addends are special. */
5215 else if (r_type != R_PPC_PLTREL24)
5216 toff += irel->r_addend;
5218 /* Attempted -shared link of non-pic code loses. */
5219 if (tsec->output_section == NULL)
5222 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5224 roff = irel->r_offset;
5225 reladdr = isec->output_section->vma + isec->output_offset + roff;
5227 /* If the branch is in range, no need to do anything. */
5228 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5231 /* Look for an existing fixup to this address. */
5232 for (f = fixups; f ; f = f->next)
5233 if (f->tsec == tsec && f->toff == toff)
5239 unsigned long stub_rtype;
5241 val = trampoff - roff;
5242 if (val >= max_branch_offset)
5243 /* Oh dear, we can't reach a trampoline. Don't try to add
5244 one. We'll report an error later. */
5247 if (link_info->shared)
5249 size = 4 * ARRAY_SIZE (shared_stub_entry);
5251 stub_rtype = R_PPC_RELAX32PC;
5255 size = 4 * ARRAY_SIZE (stub_entry);
5257 stub_rtype = R_PPC_RELAX32;
5260 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5261 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5263 if (tsec == htab->plt
5264 || tsec == htab->glink)
5265 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5267 /* Hijack the old relocation. Since we need two
5268 relocations for this use a "composite" reloc. */
5269 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5271 irel->r_offset = trampoff + insn_offset;
5273 /* Record the fixup so we don't do it again this section. */
5274 f = bfd_malloc (sizeof (*f));
5278 f->trampoff = trampoff;
5285 val = f->trampoff - roff;
5286 if (val >= max_branch_offset)
5289 /* Nop out the reloc, since we're finalizing things here. */
5290 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5293 /* Get the section contents. */
5294 if (contents == NULL)
5296 /* Get cached copy if it exists. */
5297 if (elf_section_data (isec)->this_hdr.contents != NULL)
5298 contents = elf_section_data (isec)->this_hdr.contents;
5301 /* Go get them off disk. */
5302 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5307 /* Fix up the existing branch to hit the trampoline. */
5308 hit_addr = contents + roff;
5312 case R_PPC_LOCAL24PC:
5313 case R_PPC_PLTREL24:
5314 t0 = bfd_get_32 (abfd, hit_addr);
5316 t0 |= val & 0x3fffffc;
5317 bfd_put_32 (abfd, t0, hit_addr);
5321 case R_PPC_REL14_BRTAKEN:
5322 case R_PPC_REL14_BRNTAKEN:
5323 t0 = bfd_get_32 (abfd, hit_addr);
5326 bfd_put_32 (abfd, t0, hit_addr);
5331 /* Write out the trampolines. */
5332 changed = fixups != NULL;
5342 struct one_fixup *f = fixups;
5343 fixups = fixups->next;
5348 contents = bfd_realloc (contents, trampoff);
5349 if (contents == NULL)
5352 isec->size = (isec->size + 3) & (bfd_vma) -4;
5353 /* Branch around the trampolines. */
5354 val = trampoff - isec->size + 0x48000000;
5355 dest = contents + isec->size;
5356 isec->size = trampoff;
5357 bfd_put_32 (abfd, val, dest);
5360 if (link_info->shared)
5362 stub = shared_stub_entry;
5363 size = ARRAY_SIZE (shared_stub_entry);
5368 size = ARRAY_SIZE (stub_entry);
5372 while (dest < contents + trampoff)
5374 bfd_put_32 (abfd, stub[i], dest);
5380 BFD_ASSERT (i == 0);
5384 && symtab_hdr->contents != (unsigned char *) isymbuf)
5386 if (! link_info->keep_memory)
5390 /* Cache the symbols for elf_link_input_bfd. */
5391 symtab_hdr->contents = (unsigned char *) isymbuf;
5395 if (contents != NULL
5396 && elf_section_data (isec)->this_hdr.contents != contents)
5398 if (!changed && !link_info->keep_memory)
5402 /* Cache the section contents for elf_link_input_bfd. */
5403 elf_section_data (isec)->this_hdr.contents = contents;
5407 if (elf_section_data (isec)->relocs != internal_relocs)
5410 free (internal_relocs);
5412 elf_section_data (isec)->relocs = internal_relocs;
5419 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5421 if (contents != NULL
5422 && elf_section_data (isec)->this_hdr.contents != contents)
5424 if (internal_relocs != NULL
5425 && elf_section_data (isec)->relocs != internal_relocs)
5426 free (internal_relocs);
5430 /* What to do when ld finds relocations against symbols defined in
5431 discarded sections. */
5434 ppc_elf_action_discarded (asection *sec)
5436 if (strcmp (".fixup", sec->name) == 0)
5439 if (strcmp (".got2", sec->name) == 0)
5442 return _bfd_elf_default_action_discarded (sec);
5445 /* Fill in the address for a pointer generated in a linker section. */
5448 elf_finish_pointer_linker_section (bfd *input_bfd,
5449 elf_linker_section_t *lsect,
5450 struct elf_link_hash_entry *h,
5452 const Elf_Internal_Rela *rel)
5454 elf_linker_section_pointers_t *linker_section_ptr;
5456 BFD_ASSERT (lsect != NULL);
5460 /* Handle global symbol. */
5461 struct ppc_elf_link_hash_entry *eh;
5463 eh = (struct ppc_elf_link_hash_entry *) h;
5464 BFD_ASSERT (eh->elf.def_regular);
5465 linker_section_ptr = eh->linker_section_pointer;
5469 /* Handle local symbol. */
5470 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5472 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5473 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5476 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5479 BFD_ASSERT (linker_section_ptr != NULL);
5481 /* Offset will always be a multiple of four, so use the bottom bit
5482 as a "written" flag. */
5483 if ((linker_section_ptr->offset & 1) == 0)
5485 bfd_put_32 (lsect->section->owner,
5486 relocation + linker_section_ptr->addend,
5487 lsect->section->contents + linker_section_ptr->offset);
5488 linker_section_ptr->offset += 1;
5491 relocation = (lsect->section->output_offset
5492 + linker_section_ptr->offset - 1
5497 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5498 lsect->name, (long) relocation, (long) relocation);
5501 /* Subtract out the addend, because it will get added back in by the normal
5503 return relocation - linker_section_ptr->addend;
5506 /* The RELOCATE_SECTION function is called by the ELF backend linker
5507 to handle the relocations for a section.
5509 The relocs are always passed as Rela structures; if the section
5510 actually uses Rel structures, the r_addend field will always be
5513 This function is responsible for adjust the section contents as
5514 necessary, and (if using Rela relocs and generating a
5515 relocatable output file) adjusting the reloc addend as
5518 This function does not have to worry about setting the reloc
5519 address or the reloc symbol index.
5521 LOCAL_SYMS is a pointer to the swapped in local symbols.
5523 LOCAL_SECTIONS is an array giving the section in the input file
5524 corresponding to the st_shndx field of each local symbol.
5526 The global hash table entry for the global symbols can be found
5527 via elf_sym_hashes (input_bfd).
5529 When generating relocatable output, this function must handle
5530 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5531 going to be the section symbol corresponding to the output
5532 section, which means that the addend must be adjusted
5536 ppc_elf_relocate_section (bfd *output_bfd,
5537 struct bfd_link_info *info,
5539 asection *input_section,
5541 Elf_Internal_Rela *relocs,
5542 Elf_Internal_Sym *local_syms,
5543 asection **local_sections)
5545 Elf_Internal_Shdr *symtab_hdr;
5546 struct elf_link_hash_entry **sym_hashes;
5547 struct ppc_elf_link_hash_table *htab;
5548 Elf_Internal_Rela *rel;
5549 Elf_Internal_Rela *relend;
5550 Elf_Internal_Rela outrel;
5552 asection *got2, *sreloc = NULL;
5553 bfd_vma *local_got_offsets;
5554 bfd_boolean ret = TRUE;
5555 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5558 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5559 "%ld relocations%s",
5560 input_bfd, input_section,
5561 (long) input_section->reloc_count,
5562 (info->relocatable) ? " (relocatable)" : "");
5565 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5567 /* Initialize howto table if not already done. */
5568 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5569 ppc_elf_howto_init ();
5571 htab = ppc_elf_hash_table (info);
5572 local_got_offsets = elf_local_got_offsets (input_bfd);
5573 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5574 sym_hashes = elf_sym_hashes (input_bfd);
5576 relend = relocs + input_section->reloc_count;
5577 for (; rel < relend; rel++)
5579 enum elf_ppc_reloc_type r_type;
5581 bfd_reloc_status_type r;
5582 Elf_Internal_Sym *sym;
5584 struct elf_link_hash_entry *h;
5585 const char *sym_name;
5586 reloc_howto_type *howto;
5587 unsigned long r_symndx;
5589 bfd_vma branch_bit, insn, from;
5590 bfd_boolean unresolved_reloc;
5592 unsigned int tls_type, tls_mask, tls_gd;
5594 r_type = ELF32_R_TYPE (rel->r_info);
5598 unresolved_reloc = FALSE;
5600 r_symndx = ELF32_R_SYM (rel->r_info);
5602 if (r_symndx < symtab_hdr->sh_info)
5604 sym = local_syms + r_symndx;
5605 sec = local_sections[r_symndx];
5606 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5608 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5612 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5613 r_symndx, symtab_hdr, sym_hashes,
5615 unresolved_reloc, warned);
5617 sym_name = h->root.root.string;
5620 if (sec != NULL && elf_discarded_section (sec))
5622 /* For relocs against symbols from removed linkonce sections,
5623 or sections discarded by a linker script, we just want the
5624 section contents zeroed. Avoid any special processing. */
5626 if (r_type < R_PPC_max)
5627 howto = ppc_elf_howto_table[r_type];
5628 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
5634 if (info->relocatable)
5637 && r_type == R_PPC_PLTREL24
5638 && rel->r_addend >= 32768)
5640 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5641 addend specifies the GOT pointer offset within .got2. */
5642 rel->r_addend += got2->output_offset;
5647 /* TLS optimizations. Replace instruction sequences and relocs
5648 based on information we collected in tls_optimize. We edit
5649 RELOCS so that --emit-relocs will output something sensible
5650 for the final instruction stream. */
5653 if (IS_PPC_TLS_RELOC (r_type))
5656 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5657 else if (local_got_offsets != NULL)
5660 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5661 tls_mask = lgot_masks[r_symndx];
5665 /* Ensure reloc mapping code below stays sane. */
5666 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5667 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5668 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5669 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5670 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5671 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5672 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5673 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5680 case R_PPC_GOT_TPREL16:
5681 case R_PPC_GOT_TPREL16_LO:
5683 && (tls_mask & TLS_TPREL) == 0)
5686 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
5688 insn |= 0x3c020000; /* addis 0,2,0 */
5689 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
5690 r_type = R_PPC_TPREL16_HA;
5691 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5697 && (tls_mask & TLS_TPREL) == 0)
5700 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5701 if ((insn & ((31 << 26) | (31 << 11)))
5702 == ((31 << 26) | (2 << 11)))
5703 rtra = insn & ((1 << 26) - (1 << 16));
5704 else if ((insn & ((31 << 26) | (31 << 16)))
5705 == ((31 << 26) | (2 << 16)))
5706 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5709 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5712 else if ((insn & (31 << 1)) == 23 << 1
5713 && ((insn & (31 << 6)) < 14 << 6
5714 || ((insn & (31 << 6)) >= 16 << 6
5715 && (insn & (31 << 6)) < 24 << 6)))
5716 /* load and store indexed -> dform. */
5717 insn = (32 | ((insn >> 6) & 31)) << 26;
5718 else if ((insn & (31 << 1)) == 21 << 1
5719 && (insn & (0x1a << 6)) == 0)
5720 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5721 insn = (((58 | ((insn >> 6) & 4)) << 26)
5722 | ((insn >> 6) & 1));
5723 else if ((insn & (31 << 1)) == 21 << 1
5724 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5726 insn = (58 << 26) | 2;
5730 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5731 r_type = R_PPC_TPREL16_LO;
5732 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5734 /* Was PPC_TLS which sits on insn boundary, now
5735 PPC_TPREL16_LO which is at low-order half-word. */
5736 rel->r_offset += d_offset;
5740 case R_PPC_GOT_TLSGD16_HI:
5741 case R_PPC_GOT_TLSGD16_HA:
5742 tls_gd = TLS_TPRELGD;
5743 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5747 case R_PPC_GOT_TLSLD16_HI:
5748 case R_PPC_GOT_TLSLD16_HA:
5749 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5752 if ((tls_mask & tls_gd) != 0)
5753 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5754 + R_PPC_GOT_TPREL16);
5757 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5758 rel->r_offset -= d_offset;
5759 r_type = R_PPC_NONE;
5761 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5765 case R_PPC_GOT_TLSGD16:
5766 case R_PPC_GOT_TLSGD16_LO:
5767 tls_gd = TLS_TPRELGD;
5768 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5769 goto tls_get_addr_check;
5772 case R_PPC_GOT_TLSLD16:
5773 case R_PPC_GOT_TLSLD16_LO:
5774 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5777 if (rel + 1 < relend)
5779 enum elf_ppc_reloc_type r_type2;
5780 unsigned long r_symndx2;
5781 struct elf_link_hash_entry *h2;
5782 bfd_vma insn1, insn2;
5785 /* The next instruction should be a call to
5786 __tls_get_addr. Peek at the reloc to be sure. */
5787 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5788 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5789 if (r_symndx2 < symtab_hdr->sh_info
5790 || (r_type2 != R_PPC_REL14
5791 && r_type2 != R_PPC_REL14_BRTAKEN
5792 && r_type2 != R_PPC_REL14_BRNTAKEN
5793 && r_type2 != R_PPC_REL24
5794 && r_type2 != R_PPC_PLTREL24))
5797 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5798 while (h2->root.type == bfd_link_hash_indirect
5799 || h2->root.type == bfd_link_hash_warning)
5800 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5801 if (h2 == NULL || h2 != htab->tls_get_addr)
5804 /* OK, it checks out. Replace the call. */
5805 offset = rel[1].r_offset;
5806 insn1 = bfd_get_32 (output_bfd,
5807 contents + rel->r_offset - d_offset);
5808 if ((tls_mask & tls_gd) != 0)
5811 insn1 &= (1 << 26) - 1;
5812 insn1 |= 32 << 26; /* lwz */
5813 insn2 = 0x7c631214; /* add 3,3,2 */
5814 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5815 rel[1].r_addend = 0;
5816 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5817 + R_PPC_GOT_TPREL16);
5818 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5823 insn1 = 0x3c620000; /* addis 3,2,0 */
5824 insn2 = 0x38630000; /* addi 3,3,0 */
5827 /* Was an LD reloc. */
5829 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5831 r_type = R_PPC_TPREL16_HA;
5832 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5833 rel[1].r_info = ELF32_R_INFO (r_symndx,
5835 rel[1].r_offset += d_offset;
5836 rel[1].r_addend = rel->r_addend;
5838 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
5839 bfd_put_32 (output_bfd, insn2, contents + offset);
5842 /* We changed the symbol on an LD reloc. Start over
5843 in order to get h, sym, sec etc. right. */
5852 /* Handle other relocations that tweak non-addend part of insn. */
5859 /* Branch taken prediction relocations. */
5860 case R_PPC_ADDR14_BRTAKEN:
5861 case R_PPC_REL14_BRTAKEN:
5862 branch_bit = BRANCH_PREDICT_BIT;
5865 /* Branch not taken prediction relocations. */
5866 case R_PPC_ADDR14_BRNTAKEN:
5867 case R_PPC_REL14_BRNTAKEN:
5868 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5869 insn &= ~BRANCH_PREDICT_BIT;
5872 from = (rel->r_offset
5873 + input_section->output_offset
5874 + input_section->output_section->vma);
5876 /* Invert 'y' bit if not the default. */
5877 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5878 insn ^= BRANCH_PREDICT_BIT;
5880 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5884 addend = rel->r_addend;
5887 if (r_type < R_PPC_max)
5888 howto = ppc_elf_howto_table[r_type];
5892 (*_bfd_error_handler)
5893 (_("%B: unknown relocation type %d for symbol %s"),
5894 input_bfd, (int) r_type, sym_name);
5896 bfd_set_error (bfd_error_bad_value);
5902 case R_PPC_EMB_MRKREF:
5903 case R_PPC_GNU_VTINHERIT:
5904 case R_PPC_GNU_VTENTRY:
5907 /* GOT16 relocations. Like an ADDR16 using the symbol's
5908 address in the GOT as relocation value instead of the
5909 symbol's value itself. Also, create a GOT entry for the
5910 symbol and put the symbol value there. */
5911 case R_PPC_GOT_TLSGD16:
5912 case R_PPC_GOT_TLSGD16_LO:
5913 case R_PPC_GOT_TLSGD16_HI:
5914 case R_PPC_GOT_TLSGD16_HA:
5915 tls_type = TLS_TLS | TLS_GD;
5918 case R_PPC_GOT_TLSLD16:
5919 case R_PPC_GOT_TLSLD16_LO:
5920 case R_PPC_GOT_TLSLD16_HI:
5921 case R_PPC_GOT_TLSLD16_HA:
5922 tls_type = TLS_TLS | TLS_LD;
5925 case R_PPC_GOT_TPREL16:
5926 case R_PPC_GOT_TPREL16_LO:
5927 case R_PPC_GOT_TPREL16_HI:
5928 case R_PPC_GOT_TPREL16_HA:
5929 tls_type = TLS_TLS | TLS_TPREL;
5932 case R_PPC_GOT_DTPREL16:
5933 case R_PPC_GOT_DTPREL16_LO:
5934 case R_PPC_GOT_DTPREL16_HI:
5935 case R_PPC_GOT_DTPREL16_HA:
5936 tls_type = TLS_TLS | TLS_DTPREL;
5940 case R_PPC_GOT16_LO:
5941 case R_PPC_GOT16_HI:
5942 case R_PPC_GOT16_HA:
5945 /* Relocation is to the entry for this symbol in the global
5951 if (htab->got == NULL)
5955 if (tls_type == (TLS_TLS | TLS_LD)
5957 || !h->def_dynamic))
5958 offp = &htab->tlsld_got.offset;
5962 dyn = htab->elf.dynamic_sections_created;
5963 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5965 && SYMBOL_REFERENCES_LOCAL (info, h)))
5966 /* This is actually a static link, or it is a
5967 -Bsymbolic link and the symbol is defined
5968 locally, or the symbol was forced to be local
5969 because of a version file. */
5974 unresolved_reloc = FALSE;
5976 offp = &h->got.offset;
5980 if (local_got_offsets == NULL)
5982 offp = &local_got_offsets[r_symndx];
5985 /* The offset must always be a multiple of 4. We use the
5986 least significant bit to record whether we have already
5987 processed this entry. */
5993 unsigned int tls_m = (tls_mask
5994 & (TLS_LD | TLS_GD | TLS_DTPREL
5995 | TLS_TPREL | TLS_TPRELGD));
5997 if (offp == &htab->tlsld_got.offset)
6003 /* We might have multiple got entries for this sym.
6004 Initialize them all. */
6009 if ((tls_m & TLS_LD) != 0)
6011 tls_ty = TLS_TLS | TLS_LD;
6014 else if ((tls_m & TLS_GD) != 0)
6016 tls_ty = TLS_TLS | TLS_GD;
6019 else if ((tls_m & TLS_DTPREL) != 0)
6021 tls_ty = TLS_TLS | TLS_DTPREL;
6022 tls_m &= ~TLS_DTPREL;
6024 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6026 tls_ty = TLS_TLS | TLS_TPREL;
6030 /* Generate relocs for the dynamic linker. */
6031 if ((info->shared || indx != 0)
6033 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6034 || h->root.type != bfd_link_hash_undefweak))
6036 outrel.r_offset = (htab->got->output_section->vma
6037 + htab->got->output_offset
6039 outrel.r_addend = 0;
6040 if (tls_ty & (TLS_LD | TLS_GD))
6042 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6043 if (tls_ty == (TLS_TLS | TLS_GD))
6045 loc = htab->relgot->contents;
6046 loc += (htab->relgot->reloc_count++
6047 * sizeof (Elf32_External_Rela));
6048 bfd_elf32_swap_reloca_out (output_bfd,
6050 outrel.r_offset += 4;
6052 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6055 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6056 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6057 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6058 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6060 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6062 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6065 outrel.r_addend += relocation;
6066 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6067 outrel.r_addend -= htab->elf.tls_sec->vma;
6069 loc = htab->relgot->contents;
6070 loc += (htab->relgot->reloc_count++
6071 * sizeof (Elf32_External_Rela));
6072 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6075 /* Init the .got section contents if we're not
6076 emitting a reloc. */
6079 bfd_vma value = relocation;
6081 if (tls_ty == (TLS_TLS | TLS_LD))
6083 else if (tls_ty != 0)
6085 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6086 if (tls_ty == (TLS_TLS | TLS_TPREL))
6087 value += DTP_OFFSET - TP_OFFSET;
6089 if (tls_ty == (TLS_TLS | TLS_GD))
6091 bfd_put_32 (output_bfd, value,
6092 htab->got->contents + off + 4);
6096 bfd_put_32 (output_bfd, value,
6097 htab->got->contents + off);
6101 if (tls_ty & (TLS_LD | TLS_GD))
6110 if (off >= (bfd_vma) -2)
6113 if ((tls_type & TLS_TLS) != 0)
6115 if (tls_type != (TLS_TLS | TLS_LD))
6117 if ((tls_mask & TLS_LD) != 0
6119 || !h->def_dynamic))
6121 if (tls_type != (TLS_TLS | TLS_GD))
6123 if ((tls_mask & TLS_GD) != 0)
6125 if (tls_type != (TLS_TLS | TLS_DTPREL))
6127 if ((tls_mask & TLS_DTPREL) != 0)
6134 relocation = htab->got->output_offset + off;
6135 relocation -= htab->elf.hgot->root.u.def.value;
6137 /* Addends on got relocations don't make much sense.
6138 x+off@got is actually x@got+off, and since the got is
6139 generated by a hash table traversal, the value in the
6140 got at entry m+n bears little relation to the entry m. */
6142 (*_bfd_error_handler)
6143 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6146 (long) rel->r_offset,
6152 /* Relocations that need no special processing. */
6153 case R_PPC_LOCAL24PC:
6154 /* It makes no sense to point a local relocation
6155 at a symbol not in this object. */
6156 if (unresolved_reloc)
6158 if (! (*info->callbacks->undefined_symbol) (info,
6159 h->root.root.string,
6169 case R_PPC_DTPREL16:
6170 case R_PPC_DTPREL16_LO:
6171 case R_PPC_DTPREL16_HI:
6172 case R_PPC_DTPREL16_HA:
6173 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6176 /* Relocations that may need to be propagated if this is a shared
6179 case R_PPC_TPREL16_LO:
6180 case R_PPC_TPREL16_HI:
6181 case R_PPC_TPREL16_HA:
6182 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6183 /* The TPREL16 relocs shouldn't really be used in shared
6184 libs as they will result in DT_TEXTREL being set, but
6185 support them anyway. */
6189 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6192 case R_PPC_DTPREL32:
6193 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6196 case R_PPC_DTPMOD32:
6202 case R_PPC_REL16_LO:
6203 case R_PPC_REL16_HI:
6204 case R_PPC_REL16_HA:
6210 case R_PPC_REL14_BRTAKEN:
6211 case R_PPC_REL14_BRNTAKEN:
6212 /* If these relocations are not to a named symbol, they can be
6213 handled right here, no need to bother the dynamic linker. */
6214 if (SYMBOL_REFERENCES_LOCAL (info, h)
6215 || h == htab->elf.hgot)
6219 /* Relocations that always need to be propagated if this is a shared
6224 case R_PPC_ADDR16_LO:
6225 case R_PPC_ADDR16_HI:
6226 case R_PPC_ADDR16_HA:
6228 case R_PPC_ADDR14_BRTAKEN:
6229 case R_PPC_ADDR14_BRNTAKEN:
6233 if ((input_section->flags & SEC_ALLOC) == 0)
6239 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6240 || h->root.type != bfd_link_hash_undefweak)
6241 && (MUST_BE_DYN_RELOC (r_type)
6242 || !SYMBOL_CALLS_LOCAL (info, h)))
6243 || (ELIMINATE_COPY_RELOCS
6249 && !h->def_regular))
6254 fprintf (stderr, "ppc_elf_relocate_section needs to "
6255 "create relocation for %s\n",
6256 (h && h->root.root.string
6257 ? h->root.root.string : "<unknown>"));
6260 /* When generating a shared object, these relocations
6261 are copied into the output file to be resolved at run
6267 name = (bfd_elf_string_from_elf_section
6269 elf_elfheader (input_bfd)->e_shstrndx,
6270 elf_section_data (input_section)->rel_hdr.sh_name));
6274 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
6275 && strcmp (bfd_get_section_name (input_bfd,
6279 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6280 BFD_ASSERT (sreloc != NULL);
6286 _bfd_elf_section_offset (output_bfd, info, input_section,
6288 if (outrel.r_offset == (bfd_vma) -1
6289 || outrel.r_offset == (bfd_vma) -2)
6290 skip = (int) outrel.r_offset;
6291 outrel.r_offset += (input_section->output_section->vma
6292 + input_section->output_offset);
6295 memset (&outrel, 0, sizeof outrel);
6296 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6298 unresolved_reloc = FALSE;
6299 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6300 outrel.r_addend = rel->r_addend;
6304 outrel.r_addend = relocation + rel->r_addend;
6306 if (r_type == R_PPC_ADDR32)
6307 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6312 if (bfd_is_abs_section (sec))
6314 else if (sec == NULL || sec->owner == NULL)
6316 bfd_set_error (bfd_error_bad_value);
6323 /* We are turning this relocation into one
6324 against a section symbol. It would be
6325 proper to subtract the symbol's value,
6326 osec->vma, from the emitted reloc addend,
6327 but ld.so expects buggy relocs. */
6328 osec = sec->output_section;
6329 indx = elf_section_data (osec)->dynindx;
6332 osec = htab->elf.text_index_section;
6333 indx = elf_section_data (osec)->dynindx;
6335 BFD_ASSERT (indx != 0);
6338 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6339 indx, osec->name, osec->flags,
6340 h->root.root.string);
6344 outrel.r_info = ELF32_R_INFO (indx, r_type);
6348 loc = sreloc->contents;
6349 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6350 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6355 /* This reloc will be computed at runtime. We clear the memory
6356 so that it contains predictable value. */
6358 && ((input_section->flags & SEC_ALLOC) != 0
6359 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6361 relocation = howto->pc_relative ? outrel.r_offset : 0;
6368 case R_PPC_RELAX32PC_PLT:
6369 case R_PPC_RELAX32_PLT:
6371 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6373 if (htab->plt_type == PLT_NEW)
6374 relocation = (htab->glink->output_section->vma
6375 + htab->glink->output_offset
6376 + ent->glink_offset);
6378 relocation = (htab->plt->output_section->vma
6379 + htab->plt->output_offset
6383 if (r_type == R_PPC_RELAX32_PLT)
6387 case R_PPC_RELAX32PC:
6388 relocation -= (input_section->output_section->vma
6389 + input_section->output_offset
6390 + rel->r_offset - 4);
6399 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6400 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6402 /* We're clearing the bits for R_PPC_ADDR16_HA
6403 and R_PPC_ADDR16_LO here. */
6407 /* t0 is HA, t1 is LO */
6408 relocation += addend;
6409 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6410 t1 |= relocation & 0xffff;
6412 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6413 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6417 /* Indirect .sdata relocation. */
6418 case R_PPC_EMB_SDAI16:
6419 BFD_ASSERT (htab->sdata[0].section != NULL);
6421 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6422 h, relocation, rel);
6425 /* Indirect .sdata2 relocation. */
6426 case R_PPC_EMB_SDA2I16:
6427 BFD_ASSERT (htab->sdata[1].section != NULL);
6429 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6430 h, relocation, rel);
6433 /* Handle the TOC16 reloc. We want to use the offset within the .got
6434 section, not the actual VMA. This is appropriate when generating
6435 an embedded ELF object, for which the .got section acts like the
6436 AIX .toc section. */
6437 case R_PPC_TOC16: /* phony GOT16 relocations */
6438 BFD_ASSERT (sec != NULL);
6439 BFD_ASSERT (bfd_is_und_section (sec)
6440 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6441 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6443 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6446 case R_PPC_PLTREL24:
6447 /* Relocation is to the entry for this symbol in the
6448 procedure linkage table. */
6450 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6454 || htab->plt == NULL)
6456 /* We didn't make a PLT entry for this symbol. This
6457 happens when statically linking PIC code, or when
6458 using -Bsymbolic. */
6462 unresolved_reloc = FALSE;
6463 if (htab->plt_type == PLT_NEW)
6464 relocation = (htab->glink->output_section->vma
6465 + htab->glink->output_offset
6466 + ent->glink_offset);
6468 relocation = (htab->plt->output_section->vma
6469 + htab->plt->output_offset
6474 /* Relocate against _SDA_BASE_. */
6475 case R_PPC_SDAREL16:
6478 struct elf_link_hash_entry *sh;
6480 BFD_ASSERT (sec != NULL);
6481 name = bfd_get_section_name (abfd, sec->output_section);
6482 if (! ((CONST_STRNEQ (name, ".sdata")
6483 && (name[6] == 0 || name[6] == '.'))
6484 || (CONST_STRNEQ (name, ".sbss")
6485 && (name[5] == 0 || name[5] == '.'))))
6487 (*_bfd_error_handler)
6488 (_("%B: the target (%s) of a %s relocation is "
6489 "in the wrong output section (%s)"),
6495 sh = htab->sdata[0].sym;
6496 addend -= (sh->root.u.def.value
6497 + sh->root.u.def.section->output_offset
6498 + sh->root.u.def.section->output_section->vma);
6502 /* Relocate against _SDA2_BASE_. */
6503 case R_PPC_EMB_SDA2REL:
6506 struct elf_link_hash_entry *sh;
6508 BFD_ASSERT (sec != NULL);
6509 name = bfd_get_section_name (abfd, sec->output_section);
6510 if (! (CONST_STRNEQ (name, ".sdata2")
6511 || CONST_STRNEQ (name, ".sbss2")))
6513 (*_bfd_error_handler)
6514 (_("%B: the target (%s) of a %s relocation is "
6515 "in the wrong output section (%s)"),
6521 bfd_set_error (bfd_error_bad_value);
6525 sh = htab->sdata[1].sym;
6526 addend -= (sh->root.u.def.value
6527 + sh->root.u.def.section->output_offset
6528 + sh->root.u.def.section->output_section->vma);
6532 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6533 case R_PPC_EMB_SDA21:
6534 case R_PPC_EMB_RELSDA:
6538 struct elf_link_hash_entry *sh;
6540 BFD_ASSERT (sec != NULL);
6541 name = bfd_get_section_name (abfd, sec->output_section);
6542 if (((CONST_STRNEQ (name, ".sdata")
6543 && (name[6] == 0 || name[6] == '.'))
6544 || (CONST_STRNEQ (name, ".sbss")
6545 && (name[5] == 0 || name[5] == '.'))))
6548 sh = htab->sdata[0].sym;
6549 addend -= (sh->root.u.def.value
6550 + sh->root.u.def.section->output_offset
6551 + sh->root.u.def.section->output_section->vma);
6554 else if (CONST_STRNEQ (name, ".sdata2")
6555 || CONST_STRNEQ (name, ".sbss2"))
6558 sh = htab->sdata[1].sym;
6559 addend -= (sh->root.u.def.value
6560 + sh->root.u.def.section->output_offset
6561 + sh->root.u.def.section->output_section->vma);
6564 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6565 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6572 (*_bfd_error_handler)
6573 (_("%B: the target (%s) of a %s relocation is "
6574 "in the wrong output section (%s)"),
6580 bfd_set_error (bfd_error_bad_value);
6585 if (r_type == R_PPC_EMB_SDA21)
6586 { /* fill in register field */
6587 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6588 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6589 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6594 /* Relocate against the beginning of the section. */
6596 case R_PPC_SECTOFF_LO:
6597 case R_PPC_SECTOFF_HI:
6598 case R_PPC_SECTOFF_HA:
6599 BFD_ASSERT (sec != NULL);
6600 addend -= sec->output_section->vma;
6603 /* Negative relocations. */
6604 case R_PPC_EMB_NADDR32:
6605 case R_PPC_EMB_NADDR16:
6606 case R_PPC_EMB_NADDR16_LO:
6607 case R_PPC_EMB_NADDR16_HI:
6608 case R_PPC_EMB_NADDR16_HA:
6609 addend -= 2 * relocation;
6613 case R_PPC_GLOB_DAT:
6614 case R_PPC_JMP_SLOT:
6615 case R_PPC_RELATIVE:
6617 case R_PPC_PLTREL32:
6618 case R_PPC_PLT16_LO:
6619 case R_PPC_PLT16_HI:
6620 case R_PPC_PLT16_HA:
6622 case R_PPC_EMB_RELSEC16:
6623 case R_PPC_EMB_RELST_LO:
6624 case R_PPC_EMB_RELST_HI:
6625 case R_PPC_EMB_RELST_HA:
6626 case R_PPC_EMB_BIT_FLD:
6627 (*_bfd_error_handler)
6628 (_("%B: relocation %s is not yet supported for symbol %s."),
6633 bfd_set_error (bfd_error_invalid_operation);
6638 /* Do any further special processing. */
6644 case R_PPC_ADDR16_HA:
6645 case R_PPC_REL16_HA:
6646 case R_PPC_SECTOFF_HA:
6647 case R_PPC_TPREL16_HA:
6648 case R_PPC_DTPREL16_HA:
6649 case R_PPC_EMB_NADDR16_HA:
6650 case R_PPC_EMB_RELST_HA:
6651 /* It's just possible that this symbol is a weak symbol
6652 that's not actually defined anywhere. In that case,
6653 'sec' would be NULL, and we should leave the symbol
6654 alone (it will be set to zero elsewhere in the link). */
6659 case R_PPC_PLT16_HA:
6660 case R_PPC_GOT16_HA:
6661 case R_PPC_GOT_TLSGD16_HA:
6662 case R_PPC_GOT_TLSLD16_HA:
6663 case R_PPC_GOT_TPREL16_HA:
6664 case R_PPC_GOT_DTPREL16_HA:
6665 /* Add 0x10000 if sign bit in 0:15 is set.
6666 Bits 0:15 are not used. */
6672 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6673 "offset = %ld, addend = %ld\n",
6678 (long) rel->r_offset,
6682 if (unresolved_reloc
6683 && !((input_section->flags & SEC_DEBUGGING) != 0
6686 (*_bfd_error_handler)
6687 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6690 (long) rel->r_offset,
6696 r = _bfd_final_link_relocate (howto,
6704 if (r != bfd_reloc_ok)
6706 if (r == bfd_reloc_overflow)
6711 && h->root.type == bfd_link_hash_undefweak
6712 && howto->pc_relative)
6714 /* Assume this is a call protected by other code that
6715 detect the symbol is undefined. If this is the case,
6716 we can safely ignore the overflow. If not, the
6717 program is hosed anyway, and a little warning isn't
6723 if (! (*info->callbacks->reloc_overflow) (info,
6724 (h ? &h->root : NULL),
6735 (*_bfd_error_handler)
6736 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6737 input_bfd, input_section,
6738 (long) rel->r_offset, howto->name, sym_name, (int) r);
6745 fprintf (stderr, "\n");
6751 #define PPC_LO(v) ((v) & 0xffff)
6752 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6753 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6755 /* Finish up dynamic symbol handling. We set the contents of various
6756 dynamic sections here. */
6759 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6760 struct bfd_link_info *info,
6761 struct elf_link_hash_entry *h,
6762 Elf_Internal_Sym *sym)
6764 struct ppc_elf_link_hash_table *htab;
6765 struct plt_entry *ent;
6766 bfd_boolean doneone;
6769 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6770 h->root.root.string);
6773 htab = ppc_elf_hash_table (info);
6774 BFD_ASSERT (htab->elf.dynobj != NULL);
6777 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6778 if (ent->plt.offset != (bfd_vma) -1)
6782 Elf_Internal_Rela rela;
6784 bfd_vma reloc_index;
6786 if (htab->plt_type == PLT_NEW)
6787 reloc_index = ent->plt.offset / 4;
6790 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6791 / htab->plt_slot_size);
6792 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6793 && htab->plt_type == PLT_OLD)
6794 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6797 /* This symbol has an entry in the procedure linkage table.
6799 if (htab->plt_type == PLT_VXWORKS)
6802 const bfd_vma *plt_entry;
6804 /* The first three entries in .got.plt are reserved. */
6805 got_offset = (reloc_index + 3) * 4;
6807 /* Use the right PLT. */
6808 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6809 : ppc_elf_vxworks_plt_entry;
6811 /* Fill in the .plt on VxWorks. */
6814 bfd_vma got_offset_hi = (got_offset >> 16)
6815 + ((got_offset & 0x8000) >> 15);
6817 bfd_put_32 (output_bfd,
6818 plt_entry[0] | (got_offset_hi & 0xffff),
6819 htab->plt->contents + ent->plt.offset + 0);
6820 bfd_put_32 (output_bfd,
6821 plt_entry[1] | (got_offset & 0xffff),
6822 htab->plt->contents + ent->plt.offset + 4);
6828 + htab->elf.hgot->root.u.def.value
6829 + htab->elf.hgot->root.u.def.section->output_offset
6830 + htab->elf.hgot->root.u.def.section->output_section->vma);
6831 bfd_vma got_loc_hi = (got_loc >> 16)
6832 + ((got_loc & 0x8000) >> 15);
6834 bfd_put_32 (output_bfd,
6835 plt_entry[0] | (got_loc_hi & 0xffff),
6836 htab->plt->contents + ent->plt.offset + 0);
6837 bfd_put_32 (output_bfd,
6838 plt_entry[1] | (got_loc & 0xffff),
6839 htab->plt->contents + ent->plt.offset + 4);
6842 bfd_put_32 (output_bfd, plt_entry[2],
6843 htab->plt->contents + ent->plt.offset + 8);
6844 bfd_put_32 (output_bfd, plt_entry[3],
6845 htab->plt->contents + ent->plt.offset + 12);
6847 /* This instruction is an immediate load. The value loaded is
6848 the byte offset of the R_PPC_JMP_SLOT relocation from the
6849 start of the .rela.plt section. The value is stored in the
6850 low-order 16 bits of the load instruction. */
6851 /* NOTE: It appears that this is now an index rather than a
6852 prescaled offset. */
6853 bfd_put_32 (output_bfd,
6854 plt_entry[4] | reloc_index,
6855 htab->plt->contents + ent->plt.offset + 16);
6856 /* This instruction is a PC-relative branch whose target is
6857 the start of the PLT section. The address of this branch
6858 instruction is 20 bytes beyond the start of this PLT entry.
6859 The address is encoded in bits 6-29, inclusive. The value
6860 stored is right-shifted by two bits, permitting a 26-bit
6862 bfd_put_32 (output_bfd,
6864 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6865 htab->plt->contents + ent->plt.offset + 20);
6866 bfd_put_32 (output_bfd, plt_entry[6],
6867 htab->plt->contents + ent->plt.offset + 24);
6868 bfd_put_32 (output_bfd, plt_entry[7],
6869 htab->plt->contents + ent->plt.offset + 28);
6871 /* Fill in the GOT entry corresponding to this PLT slot with
6872 the address immediately after the the "bctr" instruction
6873 in this PLT entry. */
6874 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6875 + htab->plt->output_offset
6876 + ent->plt.offset + 16),
6877 htab->sgotplt->contents + got_offset);
6881 /* Fill in a couple of entries in .rela.plt.unloaded. */
6882 loc = htab->srelplt2->contents
6883 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6884 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6885 * sizeof (Elf32_External_Rela));
6887 /* Provide the @ha relocation for the first instruction. */
6888 rela.r_offset = (htab->plt->output_section->vma
6889 + htab->plt->output_offset
6890 + ent->plt.offset + 2);
6891 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6893 rela.r_addend = got_offset;
6894 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6895 loc += sizeof (Elf32_External_Rela);
6897 /* Provide the @l relocation for the second instruction. */
6898 rela.r_offset = (htab->plt->output_section->vma
6899 + htab->plt->output_offset
6900 + ent->plt.offset + 6);
6901 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6903 rela.r_addend = got_offset;
6904 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6905 loc += sizeof (Elf32_External_Rela);
6907 /* Provide a relocation for the GOT entry corresponding to this
6908 PLT slot. Point it at the middle of the .plt entry. */
6909 rela.r_offset = (htab->sgotplt->output_section->vma
6910 + htab->sgotplt->output_offset
6912 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
6914 rela.r_addend = ent->plt.offset + 16;
6915 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6918 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6919 In particular, the offset for the relocation is not the
6920 address of the PLT entry for this function, as specified
6921 by the ABI. Instead, the offset is set to the address of
6922 the GOT slot for this function. See EABI 4.4.4.1. */
6923 rela.r_offset = (htab->sgotplt->output_section->vma
6924 + htab->sgotplt->output_offset
6930 rela.r_offset = (htab->plt->output_section->vma
6931 + htab->plt->output_offset
6933 if (htab->plt_type == PLT_OLD)
6935 /* We don't need to fill in the .plt. The ppc dynamic
6936 linker will fill it in. */
6940 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6941 + htab->glink->output_section->vma
6942 + htab->glink->output_offset);
6943 bfd_put_32 (output_bfd, val,
6944 htab->plt->contents + ent->plt.offset);
6948 /* Fill in the entry in the .rela.plt section. */
6949 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6952 loc = (htab->relplt->contents
6953 + reloc_index * sizeof (Elf32_External_Rela));
6954 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6956 if (!h->def_regular)
6958 /* Mark the symbol as undefined, rather than as defined in
6959 the .plt section. Leave the value alone. */
6960 sym->st_shndx = SHN_UNDEF;
6961 /* If the symbol is weak, we do need to clear the value.
6962 Otherwise, the PLT entry would provide a definition for
6963 the symbol even if the symbol wasn't defined anywhere,
6964 and so the symbol would never be NULL. */
6965 if (!h->ref_regular_nonweak)
6971 if (htab->plt_type == PLT_NEW)
6976 plt = (ent->plt.offset
6977 + htab->plt->output_section->vma
6978 + htab->plt->output_offset);
6979 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6981 if (info->shared || info->pie)
6985 if (ent->addend >= 32768)
6987 + ent->sec->output_section->vma
6988 + ent->sec->output_offset);
6989 else if (htab->elf.hgot != NULL)
6990 got = (htab->elf.hgot->root.u.def.value
6991 + htab->elf.hgot->root.u.def.section->output_section->vma
6992 + htab->elf.hgot->root.u.def.section->output_offset);
6996 if (plt + 0x8000 < 0x10000)
6998 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7000 bfd_put_32 (output_bfd, MTCTR_11, p);
7002 bfd_put_32 (output_bfd, BCTR, p);
7004 bfd_put_32 (output_bfd, NOP, p);
7009 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7011 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7013 bfd_put_32 (output_bfd, MTCTR_11, p);
7015 bfd_put_32 (output_bfd, BCTR, p);
7021 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7023 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7025 bfd_put_32 (output_bfd, MTCTR_11, p);
7027 bfd_put_32 (output_bfd, BCTR, p);
7030 /* We only need one non-PIC glink stub. */
7041 Elf_Internal_Rela rela;
7044 /* This symbols needs a copy reloc. Set it up. */
7047 fprintf (stderr, ", copy");
7050 BFD_ASSERT (h->dynindx != -1);
7052 if (ppc_elf_hash_entry (h)->has_sda_refs)
7056 BFD_ASSERT (s != NULL);
7058 rela.r_offset = (h->root.u.def.value
7059 + h->root.u.def.section->output_section->vma
7060 + h->root.u.def.section->output_offset);
7061 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7063 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7064 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7068 fprintf (stderr, "\n");
7071 /* Mark some specially defined symbols as absolute. */
7072 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7073 || (!htab->is_vxworks
7074 && (h == htab->elf.hgot
7075 || strcmp (h->root.root.string,
7076 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7077 sym->st_shndx = SHN_ABS;
7082 static enum elf_reloc_type_class
7083 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7085 switch (ELF32_R_TYPE (rela->r_info))
7087 case R_PPC_RELATIVE:
7088 return reloc_class_relative;
7091 case R_PPC_JMP_SLOT:
7092 return reloc_class_plt;
7094 return reloc_class_copy;
7096 return reloc_class_normal;
7100 /* Finish up the dynamic sections. */
7103 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7104 struct bfd_link_info *info)
7108 struct ppc_elf_link_hash_table *htab;
7113 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7116 htab = ppc_elf_hash_table (info);
7117 dynobj = elf_hash_table (info)->dynobj;
7118 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7119 if (htab->is_vxworks)
7120 splt = bfd_get_section_by_name (dynobj, ".plt");
7125 if (htab->elf.hgot != NULL)
7126 got = (htab->elf.hgot->root.u.def.value
7127 + htab->elf.hgot->root.u.def.section->output_section->vma
7128 + htab->elf.hgot->root.u.def.section->output_offset);
7130 if (htab->elf.dynamic_sections_created)
7132 Elf32_External_Dyn *dyncon, *dynconend;
7134 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7136 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7137 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7138 for (; dyncon < dynconend; dyncon++)
7140 Elf_Internal_Dyn dyn;
7143 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7148 if (htab->is_vxworks)
7152 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7156 dyn.d_un.d_val = htab->relplt->size;
7161 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7165 dyn.d_un.d_ptr = got;
7169 if (htab->is_vxworks)
7172 dyn.d_un.d_ptr -= htab->relplt->size;
7181 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7185 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7186 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7187 if (htab->got != NULL)
7189 unsigned char *p = htab->got->contents;
7192 p += htab->elf.hgot->root.u.def.value;
7193 if (htab->plt_type == PLT_OLD)
7194 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7198 val = sdyn->output_section->vma + sdyn->output_offset;
7199 bfd_put_32 (output_bfd, val, p);
7201 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7204 /* Fill in the first entry in the VxWorks procedure linkage table. */
7205 if (splt && splt->size > 0)
7207 /* Use the right PLT. */
7208 static const bfd_vma *plt_entry = NULL;
7209 plt_entry = info->shared ?
7210 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7215 (htab->elf.hgot->root.u.def.section->output_section->vma
7216 + htab->elf.hgot->root.u.def.section->output_offset
7217 + htab->elf.hgot->root.u.def.value);
7218 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7220 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7221 splt->contents + 0);
7222 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7223 splt->contents + 4);
7227 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7228 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7230 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7231 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7232 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7233 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7234 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7235 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7239 Elf_Internal_Rela rela;
7242 loc = htab->srelplt2->contents;
7244 /* Output the @ha relocation for the first instruction. */
7245 rela.r_offset = (htab->plt->output_section->vma
7246 + htab->plt->output_offset
7248 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7250 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7251 loc += sizeof (Elf32_External_Rela);
7253 /* Output the @l relocation for the second instruction. */
7254 rela.r_offset = (htab->plt->output_section->vma
7255 + htab->plt->output_offset
7257 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7259 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7260 loc += sizeof (Elf32_External_Rela);
7262 /* Fix up the remaining relocations. They may have the wrong
7263 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7264 in which symbols were output. */
7265 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7267 Elf_Internal_Rela rel;
7269 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7270 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7271 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7272 loc += sizeof (Elf32_External_Rela);
7274 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7275 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7276 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7277 loc += sizeof (Elf32_External_Rela);
7279 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7280 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7281 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7282 loc += sizeof (Elf32_External_Rela);
7287 if (htab->glink != NULL && htab->glink->contents != NULL)
7290 unsigned char *endp;
7295 * PIC glink code is the following:
7297 * # ith PLT code stub.
7298 * addis 11,30,(plt+(i-1)*4-got)@ha
7299 * lwz 11,(plt+(i-1)*4-got)@l(11)
7303 * # A table of branches, one for each plt entry.
7304 * # The idea is that the plt call stub loads ctr (and r11) with these
7305 * # addresses, so (r11 - res_0) gives the plt index * 4.
7306 * res_0: b PLTresolve
7307 * res_1: b PLTresolve
7309 * # Some number of entries towards the end can be nops
7315 * addis 11,11,(1f-res_0)@ha
7318 * 1: addi 11,11,(1b-res_0)@l
7321 * sub 11,11,12 # r11 = index * 4
7322 * addis 12,12,(got+4-1b)@ha
7323 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7324 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7327 * add 11,0,11 # r11 = index * 12 = reloc offset.
7330 static const unsigned int pic_plt_resolve[] =
7350 static const unsigned int plt_resolve[] =
7370 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7372 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7375 /* Build the branch table, one for each plt entry (less one),
7376 and perhaps some padding. */
7377 p = htab->glink->contents;
7378 p += htab->glink_pltresolve;
7379 endp = htab->glink->contents;
7380 endp += htab->glink->size - GLINK_PLTRESOLVE;
7381 while (p < endp - 8 * 4)
7383 bfd_put_32 (output_bfd, B + endp - p, p);
7388 bfd_put_32 (output_bfd, NOP, p);
7392 res0 = (htab->glink_pltresolve
7393 + htab->glink->output_section->vma
7394 + htab->glink->output_offset);
7396 /* Last comes the PLTresolve stub. */
7397 if (info->shared || info->pie)
7401 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7403 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7406 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7408 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7409 + htab->glink->output_section->vma
7410 + htab->glink->output_offset);
7412 bfd_put_32 (output_bfd,
7413 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7414 bfd_put_32 (output_bfd,
7415 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7416 bfd_put_32 (output_bfd,
7417 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7418 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7420 bfd_put_32 (output_bfd,
7421 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7422 bfd_put_32 (output_bfd,
7423 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7427 bfd_put_32 (output_bfd,
7428 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7429 bfd_put_32 (output_bfd,
7430 LWZ_12_12 + 4, p + 9*4);
7435 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7437 bfd_put_32 (output_bfd, plt_resolve[i], p);
7440 p -= 4 * ARRAY_SIZE (plt_resolve);
7442 bfd_put_32 (output_bfd,
7443 LIS_12 + PPC_HA (got + 4), p + 0*4);
7444 bfd_put_32 (output_bfd,
7445 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7446 bfd_put_32 (output_bfd,
7447 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7448 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7450 bfd_put_32 (output_bfd,
7451 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7452 bfd_put_32 (output_bfd,
7453 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7457 bfd_put_32 (output_bfd,
7458 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7459 bfd_put_32 (output_bfd,
7460 LWZ_12_12 + 4, p + 6*4);
7468 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7469 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7470 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7471 #define TARGET_BIG_NAME "elf32-powerpc"
7472 #define ELF_ARCH bfd_arch_powerpc
7473 #define ELF_MACHINE_CODE EM_PPC
7474 #ifdef __QNXTARGET__
7475 #define ELF_MAXPAGESIZE 0x1000
7477 #define ELF_MAXPAGESIZE 0x10000
7479 #define ELF_MINPAGESIZE 0x1000
7480 #define ELF_COMMONPAGESIZE 0x1000
7481 #define elf_info_to_howto ppc_elf_info_to_howto
7483 #ifdef EM_CYGNUS_POWERPC
7484 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7488 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7491 #define elf_backend_plt_not_loaded 1
7492 #define elf_backend_can_gc_sections 1
7493 #define elf_backend_can_refcount 1
7494 #define elf_backend_rela_normal 1
7496 #define bfd_elf32_mkobject ppc_elf_mkobject
7497 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7498 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7499 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7500 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7501 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7503 #define elf_backend_object_p ppc_elf_object_p
7504 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7505 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7506 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7507 #define elf_backend_relocate_section ppc_elf_relocate_section
7508 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7509 #define elf_backend_check_relocs ppc_elf_check_relocs
7510 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7511 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7512 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7513 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7514 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7515 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7516 #define elf_backend_fake_sections ppc_elf_fake_sections
7517 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7518 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7519 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7520 #define elf_backend_write_core_note ppc_elf_write_core_note
7521 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7522 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7523 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7524 #define elf_backend_write_section ppc_elf_write_section
7525 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7526 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7527 #define elf_backend_action_discarded ppc_elf_action_discarded
7528 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7530 #include "elf32-target.h"
7532 /* VxWorks Target */
7534 #undef TARGET_LITTLE_SYM
7535 #undef TARGET_LITTLE_NAME
7537 #undef TARGET_BIG_SYM
7538 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7539 #undef TARGET_BIG_NAME
7540 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7542 /* VxWorks uses the elf default section flags for .plt. */
7543 static const struct bfd_elf_special_section *
7544 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7546 if (sec->name == NULL)
7549 if (strcmp (sec->name, ".plt") == 0)
7550 return _bfd_elf_get_sec_type_attr (abfd, sec);
7552 return ppc_elf_get_sec_type_attr (abfd, sec);
7555 /* Like ppc_elf_link_hash_table_create, but overrides
7556 appropriately for VxWorks. */
7557 static struct bfd_link_hash_table *
7558 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7560 struct bfd_link_hash_table *ret;
7562 ret = ppc_elf_link_hash_table_create (abfd);
7565 struct ppc_elf_link_hash_table *htab
7566 = (struct ppc_elf_link_hash_table *)ret;
7567 htab->is_vxworks = 1;
7568 htab->plt_type = PLT_VXWORKS;
7569 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7570 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7571 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7576 /* Tweak magic VxWorks symbols as they are loaded. */
7578 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7579 struct bfd_link_info *info,
7580 Elf_Internal_Sym *sym,
7581 const char **namep ATTRIBUTE_UNUSED,
7582 flagword *flagsp ATTRIBUTE_UNUSED,
7586 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7590 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7594 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7596 ppc_elf_final_write_processing(abfd, linker);
7597 elf_vxworks_final_write_processing(abfd, linker);
7600 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7602 #undef elf_backend_want_plt_sym
7603 #define elf_backend_want_plt_sym 1
7604 #undef elf_backend_want_got_plt
7605 #define elf_backend_want_got_plt 1
7606 #undef elf_backend_got_symbol_offset
7607 #define elf_backend_got_symbol_offset 0
7608 #undef elf_backend_plt_not_loaded
7609 #define elf_backend_plt_not_loaded 0
7610 #undef elf_backend_plt_readonly
7611 #define elf_backend_plt_readonly 1
7612 #undef elf_backend_got_header_size
7613 #define elf_backend_got_header_size 12
7615 #undef bfd_elf32_bfd_link_hash_table_create
7616 #define bfd_elf32_bfd_link_hash_table_create \
7617 ppc_elf_vxworks_link_hash_table_create
7618 #undef elf_backend_add_symbol_hook
7619 #define elf_backend_add_symbol_hook \
7620 ppc_elf_vxworks_add_symbol_hook
7621 #undef elf_backend_link_output_symbol_hook
7622 #define elf_backend_link_output_symbol_hook \
7623 elf_vxworks_link_output_symbol_hook
7624 #undef elf_backend_final_write_processing
7625 #define elf_backend_final_write_processing \
7626 ppc_elf_vxworks_final_write_processing
7627 #undef elf_backend_get_sec_type_attr
7628 #define elf_backend_get_sec_type_attr \
7629 ppc_elf_vxworks_get_sec_type_attr
7630 #undef elf_backend_emit_relocs
7631 #define elf_backend_emit_relocs \
7632 elf_vxworks_emit_relocs
7635 #define elf32_bed ppc_elf_vxworks_bed
7637 #include "elf32-target.h"
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