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 static reloc_howto_type *
1582 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1588 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1590 if (ppc_elf_howto_raw[i].name != NULL
1591 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1592 return &ppc_elf_howto_raw[i];
1597 /* Set the howto pointer for a PowerPC ELF reloc. */
1600 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1602 Elf_Internal_Rela *dst)
1604 /* Initialize howto table if not already done. */
1605 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1606 ppc_elf_howto_init ();
1608 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1609 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1612 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1614 static bfd_reloc_status_type
1615 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1616 arelent *reloc_entry,
1618 void *data ATTRIBUTE_UNUSED,
1619 asection *input_section,
1621 char **error_message ATTRIBUTE_UNUSED)
1625 if (output_bfd != NULL)
1627 reloc_entry->address += input_section->output_offset;
1628 return bfd_reloc_ok;
1631 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1632 return bfd_reloc_outofrange;
1634 if (bfd_is_com_section (symbol->section))
1637 relocation = symbol->value;
1639 relocation += symbol->section->output_section->vma;
1640 relocation += symbol->section->output_offset;
1641 relocation += reloc_entry->addend;
1642 if (reloc_entry->howto->pc_relative)
1643 relocation -= reloc_entry->address;
1645 reloc_entry->addend += (relocation & 0x8000) << 1;
1647 return bfd_reloc_continue;
1650 static bfd_reloc_status_type
1651 ppc_elf_unhandled_reloc (bfd *abfd,
1652 arelent *reloc_entry,
1655 asection *input_section,
1657 char **error_message)
1659 /* If this is a relocatable link (output_bfd test tells us), just
1660 call the generic function. Any adjustment will be done at final
1662 if (output_bfd != NULL)
1663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1664 input_section, output_bfd, error_message);
1666 if (error_message != NULL)
1668 static char buf[60];
1669 sprintf (buf, _("generic linker can't handle %s"),
1670 reloc_entry->howto->name);
1671 *error_message = buf;
1673 return bfd_reloc_dangerous;
1676 /* Sections created by the linker. */
1678 typedef struct elf_linker_section
1680 /* Pointer to the bfd section. */
1684 /* Associated bss section name. */
1685 const char *bss_name;
1686 /* Associated symbol name. */
1687 const char *sym_name;
1688 /* Associated symbol. */
1689 struct elf_link_hash_entry *sym;
1690 } elf_linker_section_t;
1692 /* Linked list of allocated pointer entries. This hangs off of the
1693 symbol lists, and provides allows us to return different pointers,
1694 based on different addend's. */
1696 typedef struct elf_linker_section_pointers
1698 /* next allocated pointer for this symbol */
1699 struct elf_linker_section_pointers *next;
1700 /* offset of pointer from beginning of section */
1704 /* which linker section this is */
1705 elf_linker_section_t *lsect;
1706 } elf_linker_section_pointers_t;
1708 struct ppc_elf_obj_tdata
1710 struct elf_obj_tdata elf;
1712 /* A mapping from local symbols to offsets into the various linker
1713 sections added. This is index by the symbol index. */
1714 elf_linker_section_pointers_t **linker_section_pointers;
1717 #define ppc_elf_tdata(bfd) \
1718 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1720 #define elf_local_ptr_offsets(bfd) \
1721 (ppc_elf_tdata (bfd)->linker_section_pointers)
1723 /* Override the generic function because we store some extras. */
1726 ppc_elf_mkobject (bfd *abfd)
1728 if (abfd->tdata.any == NULL)
1730 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1731 abfd->tdata.any = bfd_zalloc (abfd, amt);
1732 if (abfd->tdata.any == NULL)
1735 return bfd_elf_mkobject (abfd);
1738 /* Fix bad default arch selected for a 32 bit input bfd when the
1739 default is 64 bit. */
1742 ppc_elf_object_p (bfd *abfd)
1744 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1746 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1748 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1750 /* Relies on arch after 64 bit default being 32 bit default. */
1751 abfd->arch_info = abfd->arch_info->next;
1752 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1758 /* Function to set whether a module needs the -mrelocatable bit set. */
1761 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1763 BFD_ASSERT (!elf_flags_init (abfd)
1764 || elf_elfheader (abfd)->e_flags == flags);
1766 elf_elfheader (abfd)->e_flags = flags;
1767 elf_flags_init (abfd) = TRUE;
1771 /* Support for core dump NOTE sections. */
1774 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1779 switch (note->descsz)
1784 case 268: /* Linux/PPC. */
1786 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1789 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1798 /* Make a ".reg/999" section. */
1799 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1800 size, note->descpos + offset);
1804 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1806 switch (note->descsz)
1811 case 128: /* Linux/PPC elf_prpsinfo. */
1812 elf_tdata (abfd)->core_program
1813 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1814 elf_tdata (abfd)->core_command
1815 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1818 /* Note that for some reason, a spurious space is tacked
1819 onto the end of the args in some (at least one anyway)
1820 implementations, so strip it off if it exists. */
1823 char *command = elf_tdata (abfd)->core_command;
1824 int n = strlen (command);
1826 if (0 < n && command[n - 1] == ' ')
1827 command[n - 1] = '\0';
1834 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1846 va_start (ap, note_type);
1847 memset (data, 0, 32);
1848 strncpy (data + 32, va_arg (ap, const char *), 16);
1849 strncpy (data + 48, va_arg (ap, const char *), 80);
1851 return elfcore_write_note (abfd, buf, bufsiz,
1852 "CORE", note_type, data, sizeof (data));
1863 va_start (ap, note_type);
1864 memset (data, 0, 72);
1865 pid = va_arg (ap, long);
1866 bfd_put_32 (abfd, pid, data + 24);
1867 cursig = va_arg (ap, int);
1868 bfd_put_16 (abfd, cursig, data + 12);
1869 greg = va_arg (ap, const void *);
1870 memcpy (data + 72, greg, 192);
1871 memset (data + 264, 0, 4);
1873 return elfcore_write_note (abfd, buf, bufsiz,
1874 "CORE", note_type, data, sizeof (data));
1879 /* Return address for Ith PLT stub in section PLT, for relocation REL
1880 or (bfd_vma) -1 if it should not be included. */
1883 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1884 const asection *plt ATTRIBUTE_UNUSED,
1887 return rel->address;
1890 /* Handle a PowerPC specific section when reading an object file. This
1891 is called when bfd_section_from_shdr finds a section with an unknown
1895 ppc_elf_section_from_shdr (bfd *abfd,
1896 Elf_Internal_Shdr *hdr,
1903 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1906 newsect = hdr->bfd_section;
1907 flags = bfd_get_section_flags (abfd, newsect);
1908 if (hdr->sh_flags & SHF_EXCLUDE)
1909 flags |= SEC_EXCLUDE;
1911 if (hdr->sh_type == SHT_ORDERED)
1912 flags |= SEC_SORT_ENTRIES;
1914 bfd_set_section_flags (abfd, newsect, flags);
1918 /* Set up any other section flags and such that may be necessary. */
1921 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1922 Elf_Internal_Shdr *shdr,
1925 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1926 shdr->sh_flags |= SHF_EXCLUDE;
1928 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1929 shdr->sh_type = SHT_ORDERED;
1934 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1935 need to bump up the number of section headers. */
1938 ppc_elf_additional_program_headers (bfd *abfd,
1939 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1944 s = bfd_get_section_by_name (abfd, ".sbss2");
1945 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1948 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1949 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1955 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1956 .PPC.EMB.sbss0 a normal section, and not a bss section so
1957 that the linker doesn't crater when trying to make more than
1960 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1962 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1963 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1964 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1965 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1966 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1967 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1968 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1969 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1970 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1971 { NULL, 0, 0, 0, 0 }
1974 /* This is what we want for new plt/got. */
1975 static struct bfd_elf_special_section ppc_alt_plt =
1976 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1978 static const struct bfd_elf_special_section *
1979 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1981 const struct bfd_elf_special_section *ssect;
1983 /* See if this is one of the special sections. */
1984 if (sec->name == NULL)
1987 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1991 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1992 ssect = &ppc_alt_plt;
1996 return _bfd_elf_get_sec_type_attr (abfd, sec);
1999 /* Very simple linked list structure for recording apuinfo values. */
2000 typedef struct apuinfo_list
2002 struct apuinfo_list *next;
2003 unsigned long value;
2007 static apuinfo_list *head;
2011 apuinfo_list_init (void)
2017 apuinfo_list_add (unsigned long value)
2019 apuinfo_list *entry = head;
2021 while (entry != NULL)
2023 if (entry->value == value)
2025 entry = entry->next;
2028 entry = bfd_malloc (sizeof (* entry));
2032 entry->value = value;
2038 apuinfo_list_length (void)
2040 apuinfo_list *entry;
2041 unsigned long count;
2043 for (entry = head, count = 0;
2045 entry = entry->next)
2051 static inline unsigned long
2052 apuinfo_list_element (unsigned long number)
2054 apuinfo_list * entry;
2058 entry = entry->next)
2061 return entry ? entry->value : 0;
2065 apuinfo_list_finish (void)
2067 apuinfo_list *entry;
2069 for (entry = head; entry;)
2071 apuinfo_list *next = entry->next;
2079 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2080 #define APUINFO_LABEL "APUinfo"
2082 /* Scan the input BFDs and create a linked list of
2083 the APUinfo values that will need to be emitted. */
2086 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2091 unsigned num_input_sections;
2092 bfd_size_type output_section_size;
2094 unsigned num_entries;
2095 unsigned long offset;
2096 unsigned long length;
2097 const char *error_message = NULL;
2099 if (link_info == NULL)
2102 /* Scan the input bfds, looking for apuinfo sections. */
2103 num_input_sections = 0;
2104 output_section_size = 0;
2106 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2108 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2111 ++ num_input_sections;
2112 output_section_size += asec->size;
2116 /* We need at least one input sections
2117 in order to make merging worthwhile. */
2118 if (num_input_sections < 1)
2121 /* Just make sure that the output section exists as well. */
2122 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2126 /* Allocate a buffer for the contents of the input sections. */
2127 buffer = bfd_malloc (output_section_size);
2132 apuinfo_list_init ();
2134 /* Read in the input sections contents. */
2135 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2137 unsigned long datum;
2140 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2144 length = asec->size;
2147 error_message = _("corrupt or empty %s section in %B");
2151 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2152 || (bfd_bread (buffer + offset, length, ibfd) != length))
2154 error_message = _("unable to read in %s section from %B");
2158 /* Process the contents of the section. */
2159 ptr = buffer + offset;
2160 error_message = _("corrupt %s section in %B");
2162 /* Verify the contents of the header. Note - we have to
2163 extract the values this way in order to allow for a
2164 host whose endian-ness is different from the target. */
2165 datum = bfd_get_32 (ibfd, ptr);
2166 if (datum != sizeof APUINFO_LABEL)
2169 datum = bfd_get_32 (ibfd, ptr + 8);
2173 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2176 /* Get the number of bytes used for apuinfo entries. */
2177 datum = bfd_get_32 (ibfd, ptr + 4);
2178 if (datum + 20 != length)
2181 /* Make sure that we do not run off the end of the section. */
2182 if (offset + length > output_section_size)
2185 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2186 for (i = 0; i < datum; i += 4)
2187 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2189 /* Update the offset. */
2193 error_message = NULL;
2195 /* Compute the size of the output section. */
2196 num_entries = apuinfo_list_length ();
2197 output_section_size = 20 + num_entries * 4;
2199 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2201 if (! bfd_set_section_size (abfd, asec, output_section_size))
2203 error_message = _("warning: unable to set size of %s section in %B");
2209 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2212 /* Prevent the output section from accumulating the input sections'
2213 contents. We have already stored this in our linked list structure. */
2216 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2217 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2219 bfd_byte *contents ATTRIBUTE_UNUSED)
2221 return (apuinfo_list_length ()
2222 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2225 /* Finally we can generate the output section. */
2228 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2233 unsigned num_entries;
2234 bfd_size_type length;
2236 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2240 if (apuinfo_list_length () == 0)
2243 length = asec->size;
2247 buffer = bfd_malloc (length);
2250 (*_bfd_error_handler)
2251 (_("failed to allocate space for new APUinfo section."));
2255 /* Create the apuinfo header. */
2256 num_entries = apuinfo_list_length ();
2257 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2258 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2259 bfd_put_32 (abfd, 0x2, buffer + 8);
2260 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2263 for (i = 0; i < num_entries; i++)
2265 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2269 if (length != asec->size)
2270 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2272 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2273 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2277 apuinfo_list_finish ();
2280 /* The following functions are specific to the ELF linker, while
2281 functions above are used generally. They appear in this file more
2282 or less in the order in which they are called. eg.
2283 ppc_elf_check_relocs is called early in the link process,
2284 ppc_elf_finish_dynamic_sections is one of the last functions
2287 /* The PPC linker needs to keep track of the number of relocs that it
2288 decides to copy as dynamic relocs in check_relocs for each symbol.
2289 This is so that it can later discard them if they are found to be
2290 unnecessary. We store the information in a field extending the
2291 regular ELF linker hash table. */
2293 struct ppc_elf_dyn_relocs
2295 struct ppc_elf_dyn_relocs *next;
2297 /* The input section of the reloc. */
2300 /* Total number of relocs copied for the input section. */
2301 bfd_size_type count;
2303 /* Number of pc-relative relocs copied for the input section. */
2304 bfd_size_type pc_count;
2307 /* Track PLT entries needed for a given symbol. We might need more
2308 than one glink entry per symbol. */
2311 struct plt_entry *next;
2313 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2314 This field stores the offset into .got2 used to initialise the
2315 GOT pointer reg. It will always be at least 32768 (and for
2316 current gcc this is the only offset used). */
2319 /* The .got2 section. */
2322 /* PLT refcount or offset. */
2325 bfd_signed_vma refcount;
2329 /* .glink stub offset. */
2330 bfd_vma glink_offset;
2333 /* Of those relocs that might be copied as dynamic relocs, this macro
2334 selects those that must be copied when linking a shared library,
2335 even when the symbol is local. */
2337 #define MUST_BE_DYN_RELOC(RTYPE) \
2338 ((RTYPE) != R_PPC_REL24 \
2339 && (RTYPE) != R_PPC_REL14 \
2340 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2341 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2342 && (RTYPE) != R_PPC_REL32)
2344 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2345 copying dynamic variables from a shared lib into an app's dynbss
2346 section, and instead use a dynamic relocation to point into the
2348 #define ELIMINATE_COPY_RELOCS 1
2350 /* PPC ELF linker hash entry. */
2352 struct ppc_elf_link_hash_entry
2354 struct elf_link_hash_entry elf;
2356 /* If this symbol is used in the linker created sections, the processor
2357 specific backend uses this field to map the field into the offset
2358 from the beginning of the section. */
2359 elf_linker_section_pointers_t *linker_section_pointer;
2361 /* Track dynamic relocs copied for this symbol. */
2362 struct ppc_elf_dyn_relocs *dyn_relocs;
2364 /* Contexts in which symbol is used in the GOT (or TOC).
2365 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2366 corresponding relocs are encountered during check_relocs.
2367 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2368 indicate the corresponding GOT entry type is not needed. */
2369 #define TLS_GD 1 /* GD reloc. */
2370 #define TLS_LD 2 /* LD reloc. */
2371 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2372 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2373 #define TLS_TLS 16 /* Any TLS reloc. */
2374 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2377 /* Nonzero if we have seen a small data relocation referring to this
2379 unsigned char has_sda_refs;
2382 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2384 enum ppc_elf_plt_type {
2391 /* PPC ELF linker hash table. */
2393 struct ppc_elf_link_hash_table
2395 struct elf_link_hash_table elf;
2397 /* Short-cuts to get to dynamic linker sections. */
2407 elf_linker_section_t sdata[2];
2410 /* Shortcut to .__tls_get_addr. */
2411 struct elf_link_hash_entry *tls_get_addr;
2413 /* TLS local dynamic got entry handling. */
2415 bfd_signed_vma refcount;
2419 /* Offset of PltResolve function in glink. */
2420 bfd_vma glink_pltresolve;
2422 /* Size of reserved GOT entries. */
2423 unsigned int got_header_size;
2424 /* Non-zero if allocating the header left a gap. */
2425 unsigned int got_gap;
2427 /* The type of PLT we have chosen to use. */
2428 enum ppc_elf_plt_type plt_type;
2430 /* Whether we can use the new PLT layout. */
2431 unsigned int can_use_new_plt:1;
2433 /* Set if we should emit symbols for stubs. */
2434 unsigned int emit_stub_syms:1;
2436 /* Small local sym to section mapping cache. */
2437 struct sym_sec_cache sym_sec;
2439 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2442 /* The .got.plt section (VxWorks only)*/
2445 /* True if the target system is VxWorks. */
2448 /* The size of PLT entries. */
2450 /* The distance between adjacent PLT slots. */
2452 /* The size of the first PLT entry. */
2453 int plt_initial_entry_size;
2456 /* Get the PPC ELF linker hash table from a link_info structure. */
2458 #define ppc_elf_hash_table(p) \
2459 ((struct ppc_elf_link_hash_table *) (p)->hash)
2461 /* Create an entry in a PPC ELF linker hash table. */
2463 static struct bfd_hash_entry *
2464 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2465 struct bfd_hash_table *table,
2468 /* Allocate the structure if it has not already been allocated by a
2472 entry = bfd_hash_allocate (table,
2473 sizeof (struct ppc_elf_link_hash_entry));
2478 /* Call the allocation method of the superclass. */
2479 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2482 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2483 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2484 ppc_elf_hash_entry (entry)->tls_mask = 0;
2490 /* Create a PPC ELF linker hash table. */
2492 static struct bfd_link_hash_table *
2493 ppc_elf_link_hash_table_create (bfd *abfd)
2495 struct ppc_elf_link_hash_table *ret;
2497 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2501 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2502 ppc_elf_link_hash_newfunc,
2503 sizeof (struct ppc_elf_link_hash_entry)))
2509 ret->elf.init_plt_refcount.refcount = 0;
2510 ret->elf.init_plt_refcount.glist = NULL;
2511 ret->elf.init_plt_offset.offset = 0;
2512 ret->elf.init_plt_offset.glist = NULL;
2514 ret->sdata[0].name = ".sdata";
2515 ret->sdata[0].sym_name = "_SDA_BASE_";
2516 ret->sdata[0].bss_name = ".sbss";
2518 ret->sdata[1].name = ".sdata2";
2519 ret->sdata[1].sym_name = "_SDA2_BASE_";
2520 ret->sdata[1].bss_name = ".sbss2";
2522 ret->plt_entry_size = 12;
2523 ret->plt_slot_size = 8;
2524 ret->plt_initial_entry_size = 72;
2526 ret->is_vxworks = 0;
2528 return &ret->elf.root;
2531 /* Create .got and the related sections. */
2534 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2536 struct ppc_elf_link_hash_table *htab;
2540 if (!_bfd_elf_create_got_section (abfd, info))
2543 htab = ppc_elf_hash_table (info);
2544 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2548 if (htab->is_vxworks)
2550 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2556 /* The powerpc .got has a blrl instruction in it. Mark it
2558 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2559 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2560 if (!bfd_set_section_flags (abfd, s, flags))
2564 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2565 | SEC_LINKER_CREATED | SEC_READONLY);
2566 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2568 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2574 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2575 to output sections (just like _bfd_elf_create_dynamic_sections has
2576 to create .dynbss and .rela.bss). */
2579 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2581 struct ppc_elf_link_hash_table *htab;
2585 htab = ppc_elf_hash_table (info);
2587 if (htab->got == NULL
2588 && !ppc_elf_create_got (abfd, info))
2591 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2594 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2595 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2597 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2600 || !bfd_set_section_alignment (abfd, s, 4))
2603 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2604 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2605 SEC_ALLOC | SEC_LINKER_CREATED);
2612 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2613 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2616 || ! bfd_set_section_alignment (abfd, s, 2))
2620 if (htab->is_vxworks
2621 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2624 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2625 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2629 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2630 if (htab->plt_type == PLT_VXWORKS)
2631 /* The VxWorks PLT is a loaded section with contents. */
2632 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2633 return bfd_set_section_flags (abfd, s, flags);
2636 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2639 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2640 struct elf_link_hash_entry *dir,
2641 struct elf_link_hash_entry *ind)
2643 struct ppc_elf_link_hash_entry *edir, *eind;
2645 edir = (struct ppc_elf_link_hash_entry *) dir;
2646 eind = (struct ppc_elf_link_hash_entry *) ind;
2648 if (eind->dyn_relocs != NULL)
2650 if (edir->dyn_relocs != NULL)
2652 struct ppc_elf_dyn_relocs **pp;
2653 struct ppc_elf_dyn_relocs *p;
2655 /* Add reloc counts against the indirect sym to the direct sym
2656 list. Merge any entries against the same section. */
2657 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2659 struct ppc_elf_dyn_relocs *q;
2661 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2662 if (q->sec == p->sec)
2664 q->pc_count += p->pc_count;
2665 q->count += p->count;
2672 *pp = edir->dyn_relocs;
2675 edir->dyn_relocs = eind->dyn_relocs;
2676 eind->dyn_relocs = NULL;
2679 edir->tls_mask |= eind->tls_mask;
2680 edir->has_sda_refs |= eind->has_sda_refs;
2682 /* If called to transfer flags for a weakdef during processing
2683 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2684 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2685 if (!(ELIMINATE_COPY_RELOCS
2686 && eind->elf.root.type != bfd_link_hash_indirect
2687 && edir->elf.dynamic_adjusted))
2688 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2690 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2691 edir->elf.ref_regular |= eind->elf.ref_regular;
2692 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2693 edir->elf.needs_plt |= eind->elf.needs_plt;
2695 /* If we were called to copy over info for a weak sym, that's all. */
2696 if (eind->elf.root.type != bfd_link_hash_indirect)
2699 /* Copy over the GOT refcount entries that we may have already seen to
2700 the symbol which just became indirect. */
2701 edir->elf.got.refcount += eind->elf.got.refcount;
2702 eind->elf.got.refcount = 0;
2704 /* And plt entries. */
2705 if (eind->elf.plt.plist != NULL)
2707 if (edir->elf.plt.plist != NULL)
2709 struct plt_entry **entp;
2710 struct plt_entry *ent;
2712 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2714 struct plt_entry *dent;
2716 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2717 if (dent->sec == ent->sec && dent->addend == ent->addend)
2719 dent->plt.refcount += ent->plt.refcount;
2726 *entp = edir->elf.plt.plist;
2729 edir->elf.plt.plist = eind->elf.plt.plist;
2730 eind->elf.plt.plist = NULL;
2733 if (eind->elf.dynindx != -1)
2735 if (edir->elf.dynindx != -1)
2736 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2737 edir->elf.dynstr_index);
2738 edir->elf.dynindx = eind->elf.dynindx;
2739 edir->elf.dynstr_index = eind->elf.dynstr_index;
2740 eind->elf.dynindx = -1;
2741 eind->elf.dynstr_index = 0;
2745 /* Return 1 if target is one of ours. */
2748 is_ppc_elf_target (const struct bfd_target *targ)
2750 extern const bfd_target bfd_elf32_powerpc_vec;
2751 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
2752 extern const bfd_target bfd_elf32_powerpcle_vec;
2754 return (targ == &bfd_elf32_powerpc_vec
2755 || targ == &bfd_elf32_powerpc_vxworks_vec
2756 || targ == &bfd_elf32_powerpcle_vec);
2759 /* Hook called by the linker routine which adds symbols from an object
2760 file. We use it to put .comm items in .sbss, and not .bss. */
2763 ppc_elf_add_symbol_hook (bfd *abfd,
2764 struct bfd_link_info *info,
2765 Elf_Internal_Sym *sym,
2766 const char **namep ATTRIBUTE_UNUSED,
2767 flagword *flagsp ATTRIBUTE_UNUSED,
2771 if (sym->st_shndx == SHN_COMMON
2772 && !info->relocatable
2773 && sym->st_size <= elf_gp_size (abfd)
2774 && is_ppc_elf_target (info->hash->creator))
2776 /* Common symbols less than or equal to -G nn bytes are automatically
2778 struct ppc_elf_link_hash_table *htab;
2780 htab = ppc_elf_hash_table (info);
2781 if (htab->sbss == NULL)
2783 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2785 if (!htab->elf.dynobj)
2786 htab->elf.dynobj = abfd;
2788 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2791 if (htab->sbss == NULL)
2796 *valp = sym->st_size;
2803 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2804 elf_linker_section_t *lsect)
2806 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2808 if (lsect->sym == NULL)
2810 if (lsect->sym->root.type == bfd_link_hash_new)
2811 lsect->sym->non_elf = 0;
2812 lsect->sym->ref_regular = 1;
2816 /* Create a special linker section. */
2819 ppc_elf_create_linker_section (bfd *abfd,
2820 struct bfd_link_info *info,
2822 elf_linker_section_t *lsect)
2824 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2827 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2828 | SEC_LINKER_CREATED);
2830 /* Record the first bfd that needs the special sections. */
2831 if (!htab->elf.dynobj)
2832 htab->elf.dynobj = abfd;
2834 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2838 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2842 return create_sdata_sym (htab, lsect);
2845 /* Find a linker generated pointer with a given addend and type. */
2847 static elf_linker_section_pointers_t *
2848 elf_find_pointer_linker_section
2849 (elf_linker_section_pointers_t *linker_pointers,
2851 elf_linker_section_t *lsect)
2853 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2854 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2855 return linker_pointers;
2860 /* Allocate a pointer to live in a linker created section. */
2863 elf_create_pointer_linker_section (bfd *abfd,
2864 elf_linker_section_t *lsect,
2865 struct elf_link_hash_entry *h,
2866 const Elf_Internal_Rela *rel)
2868 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2869 elf_linker_section_pointers_t *linker_section_ptr;
2870 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2873 BFD_ASSERT (lsect != NULL);
2875 /* Is this a global symbol? */
2878 struct ppc_elf_link_hash_entry *eh;
2880 /* Has this symbol already been allocated? If so, our work is done. */
2881 eh = (struct ppc_elf_link_hash_entry *) h;
2882 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2887 ptr_linker_section_ptr = &eh->linker_section_pointer;
2891 /* Allocation of a pointer to a local symbol. */
2892 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2894 /* Allocate a table to hold the local symbols if first time. */
2897 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2900 amt *= sizeof (elf_linker_section_pointers_t *);
2901 ptr = bfd_zalloc (abfd, amt);
2906 elf_local_ptr_offsets (abfd) = ptr;
2909 /* Has this symbol already been allocated? If so, our work is done. */
2910 if (elf_find_pointer_linker_section (ptr[r_symndx],
2915 ptr_linker_section_ptr = &ptr[r_symndx];
2918 /* Allocate space for a pointer in the linker section, and allocate
2919 a new pointer record from internal memory. */
2920 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2921 amt = sizeof (elf_linker_section_pointers_t);
2922 linker_section_ptr = bfd_alloc (abfd, amt);
2924 if (!linker_section_ptr)
2927 linker_section_ptr->next = *ptr_linker_section_ptr;
2928 linker_section_ptr->addend = rel->r_addend;
2929 linker_section_ptr->lsect = lsect;
2930 *ptr_linker_section_ptr = linker_section_ptr;
2932 linker_section_ptr->offset = lsect->section->size;
2933 lsect->section->size += 4;
2937 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2938 lsect->name, (long) linker_section_ptr->offset,
2939 (long) lsect->section->size);
2946 update_local_sym_info (bfd *abfd,
2947 Elf_Internal_Shdr *symtab_hdr,
2948 unsigned long r_symndx,
2951 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2952 char *local_got_tls_masks;
2954 if (local_got_refcounts == NULL)
2956 bfd_size_type size = symtab_hdr->sh_info;
2958 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2959 local_got_refcounts = bfd_zalloc (abfd, size);
2960 if (local_got_refcounts == NULL)
2962 elf_local_got_refcounts (abfd) = local_got_refcounts;
2965 local_got_refcounts[r_symndx] += 1;
2966 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2967 local_got_tls_masks[r_symndx] |= tls_type;
2972 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2973 asection *sec, bfd_vma addend)
2975 struct plt_entry *ent;
2979 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2980 if (ent->sec == sec && ent->addend == addend)
2984 bfd_size_type amt = sizeof (*ent);
2985 ent = bfd_alloc (abfd, amt);
2988 ent->next = h->plt.plist;
2990 ent->addend = addend;
2991 ent->plt.refcount = 0;
2994 ent->plt.refcount += 1;
2998 static struct plt_entry *
2999 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3001 struct plt_entry *ent;
3005 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3006 if (ent->sec == sec && ent->addend == addend)
3012 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3014 (*_bfd_error_handler)
3015 (_("%B: relocation %s cannot be used when making a shared object"),
3017 ppc_elf_howto_table[r_type]->name);
3018 bfd_set_error (bfd_error_bad_value);
3021 /* Look through the relocs for a section during the first phase, and
3022 allocate space in the global offset table or procedure linkage
3026 ppc_elf_check_relocs (bfd *abfd,
3027 struct bfd_link_info *info,
3029 const Elf_Internal_Rela *relocs)
3031 struct ppc_elf_link_hash_table *htab;
3032 Elf_Internal_Shdr *symtab_hdr;
3033 struct elf_link_hash_entry **sym_hashes;
3034 const Elf_Internal_Rela *rel;
3035 const Elf_Internal_Rela *rel_end;
3036 asection *got2, *sreloc;
3038 if (info->relocatable)
3041 /* Don't do anything special with non-loaded, non-alloced sections.
3042 In particular, any relocs in such sections should not affect GOT
3043 and PLT reference counting (ie. we don't allow them to create GOT
3044 or PLT entries), there's no possibility or desire to optimize TLS
3045 relocs, and there's not much point in propagating relocs to shared
3046 libs that the dynamic linker won't relocate. */
3047 if ((sec->flags & SEC_ALLOC) == 0)
3051 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3055 /* Initialize howto table if not already done. */
3056 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3057 ppc_elf_howto_init ();
3059 htab = ppc_elf_hash_table (info);
3060 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3061 sym_hashes = elf_sym_hashes (abfd);
3062 got2 = bfd_get_section_by_name (abfd, ".got2");
3065 rel_end = relocs + sec->reloc_count;
3066 for (rel = relocs; rel < rel_end; rel++)
3068 unsigned long r_symndx;
3069 enum elf_ppc_reloc_type r_type;
3070 struct elf_link_hash_entry *h;
3073 r_symndx = ELF32_R_SYM (rel->r_info);
3074 if (r_symndx < symtab_hdr->sh_info)
3078 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3079 while (h->root.type == bfd_link_hash_indirect
3080 || h->root.type == bfd_link_hash_warning)
3081 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3084 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3085 This shows up in particular in an R_PPC_ADDR32 in the eabi
3088 && htab->got == NULL
3089 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3091 if (htab->elf.dynobj == NULL)
3092 htab->elf.dynobj = abfd;
3093 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3095 BFD_ASSERT (h == htab->elf.hgot);
3098 r_type = ELF32_R_TYPE (rel->r_info);
3101 case R_PPC_GOT_TLSLD16:
3102 case R_PPC_GOT_TLSLD16_LO:
3103 case R_PPC_GOT_TLSLD16_HI:
3104 case R_PPC_GOT_TLSLD16_HA:
3105 htab->tlsld_got.refcount += 1;
3106 tls_type = TLS_TLS | TLS_LD;
3109 case R_PPC_GOT_TLSGD16:
3110 case R_PPC_GOT_TLSGD16_LO:
3111 case R_PPC_GOT_TLSGD16_HI:
3112 case R_PPC_GOT_TLSGD16_HA:
3113 tls_type = TLS_TLS | TLS_GD;
3116 case R_PPC_GOT_TPREL16:
3117 case R_PPC_GOT_TPREL16_LO:
3118 case R_PPC_GOT_TPREL16_HI:
3119 case R_PPC_GOT_TPREL16_HA:
3121 info->flags |= DF_STATIC_TLS;
3122 tls_type = TLS_TLS | TLS_TPREL;
3125 case R_PPC_GOT_DTPREL16:
3126 case R_PPC_GOT_DTPREL16_LO:
3127 case R_PPC_GOT_DTPREL16_HI:
3128 case R_PPC_GOT_DTPREL16_HA:
3129 tls_type = TLS_TLS | TLS_DTPREL;
3131 sec->has_tls_reloc = 1;
3134 /* GOT16 relocations */
3136 case R_PPC_GOT16_LO:
3137 case R_PPC_GOT16_HI:
3138 case R_PPC_GOT16_HA:
3139 /* This symbol requires a global offset table entry. */
3140 if (htab->got == NULL)
3142 if (htab->elf.dynobj == NULL)
3143 htab->elf.dynobj = abfd;
3144 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3149 h->got.refcount += 1;
3150 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3153 /* This is a global offset table entry for a local symbol. */
3154 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3158 /* Indirect .sdata relocation. */
3159 case R_PPC_EMB_SDAI16:
3162 bad_shared_reloc (abfd, r_type);
3165 if (htab->sdata[0].section == NULL
3166 && !ppc_elf_create_linker_section (abfd, info, 0,
3169 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3174 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3175 h->non_got_ref = TRUE;
3179 /* Indirect .sdata2 relocation. */
3180 case R_PPC_EMB_SDA2I16:
3183 bad_shared_reloc (abfd, r_type);
3186 if (htab->sdata[1].section == NULL
3187 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3190 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3195 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3196 h->non_got_ref = TRUE;
3200 case R_PPC_SDAREL16:
3203 bad_shared_reloc (abfd, r_type);
3206 if (htab->sdata[0].sym == NULL
3207 && !create_sdata_sym (htab, &htab->sdata[0]))
3211 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3212 h->non_got_ref = TRUE;
3216 case R_PPC_EMB_SDA2REL:
3219 bad_shared_reloc (abfd, r_type);
3222 if (htab->sdata[1].sym == NULL
3223 && !create_sdata_sym (htab, &htab->sdata[1]))
3227 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3228 h->non_got_ref = TRUE;
3232 case R_PPC_EMB_SDA21:
3233 case R_PPC_EMB_RELSDA:
3236 bad_shared_reloc (abfd, r_type);
3239 if (htab->sdata[0].sym == NULL
3240 && !create_sdata_sym (htab, &htab->sdata[0]))
3242 if (htab->sdata[1].sym == NULL
3243 && !create_sdata_sym (htab, &htab->sdata[1]))
3247 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3248 h->non_got_ref = TRUE;
3252 case R_PPC_EMB_NADDR32:
3253 case R_PPC_EMB_NADDR16:
3254 case R_PPC_EMB_NADDR16_LO:
3255 case R_PPC_EMB_NADDR16_HI:
3256 case R_PPC_EMB_NADDR16_HA:
3259 bad_shared_reloc (abfd, r_type);
3263 h->non_got_ref = TRUE;
3267 case R_PPC_PLTREL24:
3268 case R_PPC_PLTREL32:
3269 case R_PPC_PLT16_LO:
3270 case R_PPC_PLT16_HI:
3271 case R_PPC_PLT16_HA:
3273 fprintf (stderr, "Reloc requires a PLT entry\n");
3275 /* This symbol requires a procedure linkage table entry. We
3276 actually build the entry in finish_dynamic_symbol,
3277 because this might be a case of linking PIC code without
3278 linking in any dynamic objects, in which case we don't
3279 need to generate a procedure linkage table after all. */
3283 /* It does not make sense to have a procedure linkage
3284 table entry for a local symbol. */
3285 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3289 (long) rel->r_offset,
3290 ppc_elf_howto_table[r_type]->name);
3291 bfd_set_error (bfd_error_bad_value);
3296 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3299 if (!update_plt_info (abfd, h, got2, addend))
3304 /* The following relocations don't need to propagate the
3305 relocation if linking a shared object since they are
3306 section relative. */
3308 case R_PPC_SECTOFF_LO:
3309 case R_PPC_SECTOFF_HI:
3310 case R_PPC_SECTOFF_HA:
3311 case R_PPC_DTPREL16:
3312 case R_PPC_DTPREL16_LO:
3313 case R_PPC_DTPREL16_HI:
3314 case R_PPC_DTPREL16_HA:
3319 case R_PPC_REL16_LO:
3320 case R_PPC_REL16_HI:
3321 case R_PPC_REL16_HA:
3322 htab->can_use_new_plt = 1;
3325 /* These are just markers. */
3327 case R_PPC_EMB_MRKREF:
3332 /* These should only appear in dynamic objects. */
3334 case R_PPC_GLOB_DAT:
3335 case R_PPC_JMP_SLOT:
3336 case R_PPC_RELATIVE:
3339 /* These aren't handled yet. We'll report an error later. */
3341 case R_PPC_EMB_RELSEC16:
3342 case R_PPC_EMB_RELST_LO:
3343 case R_PPC_EMB_RELST_HI:
3344 case R_PPC_EMB_RELST_HA:
3345 case R_PPC_EMB_BIT_FLD:
3348 /* This refers only to functions defined in the shared library. */
3349 case R_PPC_LOCAL24PC:
3350 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3351 htab->plt_type = PLT_OLD;
3354 /* This relocation describes the C++ object vtable hierarchy.
3355 Reconstruct it for later use during GC. */
3356 case R_PPC_GNU_VTINHERIT:
3357 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3361 /* This relocation describes which C++ vtable entries are actually
3362 used. Record for later use during GC. */
3363 case R_PPC_GNU_VTENTRY:
3364 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3368 /* We shouldn't really be seeing these. */
3371 info->flags |= DF_STATIC_TLS;
3375 case R_PPC_DTPMOD32:
3376 case R_PPC_DTPREL32:
3380 case R_PPC_TPREL16_LO:
3381 case R_PPC_TPREL16_HI:
3382 case R_PPC_TPREL16_HA:
3384 info->flags |= DF_STATIC_TLS;
3390 && (sec->flags & SEC_CODE) != 0
3391 && (info->shared || info->pie)
3392 && htab->plt_type == PLT_UNSET)
3394 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3395 the start of a function, which assembles to a REL32
3396 reference to .got2. If we detect one of these, then
3397 force the old PLT layout because the linker cannot
3398 reliably deduce the GOT pointer value needed for
3402 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3405 htab->plt_type = PLT_OLD;
3407 if (h == NULL || h == htab->elf.hgot)
3413 case R_PPC_REL14_BRTAKEN:
3414 case R_PPC_REL14_BRNTAKEN:
3417 if (h == htab->elf.hgot)
3419 if (htab->plt_type == PLT_UNSET)
3420 htab->plt_type = PLT_OLD;
3428 case R_PPC_ADDR16_LO:
3429 case R_PPC_ADDR16_HI:
3430 case R_PPC_ADDR16_HA:
3432 case R_PPC_ADDR14_BRTAKEN:
3433 case R_PPC_ADDR14_BRNTAKEN:
3437 if (h != NULL && !info->shared)
3439 /* We may need a plt entry if the symbol turns out to be
3440 a function defined in a dynamic object. */
3441 if (!update_plt_info (abfd, h, NULL, 0))
3444 /* We may need a copy reloc too. */
3449 /* If we are creating a shared library, and this is a reloc
3450 against a global symbol, or a non PC relative reloc
3451 against a local symbol, then we need to copy the reloc
3452 into the shared library. However, if we are linking with
3453 -Bsymbolic, we do not need to copy a reloc against a
3454 global symbol which is defined in an object we are
3455 including in the link (i.e., DEF_REGULAR is set). At
3456 this point we have not seen all the input files, so it is
3457 possible that DEF_REGULAR is not set now but will be set
3458 later (it is never cleared). In case of a weak definition,
3459 DEF_REGULAR may be cleared later by a strong definition in
3460 a shared library. We account for that possibility below by
3461 storing information in the dyn_relocs field of the hash
3462 table entry. A similar situation occurs when creating
3463 shared libraries and symbol visibility changes render the
3466 If on the other hand, we are creating an executable, we
3467 may need to keep relocations for symbols satisfied by a
3468 dynamic library if we manage to avoid copy relocs for the
3471 && (MUST_BE_DYN_RELOC (r_type)
3473 && (! info->symbolic
3474 || h->root.type == bfd_link_hash_defweak
3475 || !h->def_regular))))
3476 || (ELIMINATE_COPY_RELOCS
3479 && (h->root.type == bfd_link_hash_defweak
3480 || !h->def_regular)))
3482 struct ppc_elf_dyn_relocs *p;
3483 struct ppc_elf_dyn_relocs **head;
3487 "ppc_elf_check_relocs needs to "
3488 "create relocation for %s\n",
3489 (h && h->root.root.string
3490 ? h->root.root.string : "<unknown>"));
3496 name = (bfd_elf_string_from_elf_section
3498 elf_elfheader (abfd)->e_shstrndx,
3499 elf_section_data (sec)->rel_hdr.sh_name));
3503 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3504 && strcmp (bfd_get_section_name (abfd, sec),
3507 if (htab->elf.dynobj == NULL)
3508 htab->elf.dynobj = abfd;
3509 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3514 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3515 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3516 | SEC_ALLOC | SEC_LOAD);
3517 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3521 || ! bfd_set_section_alignment (htab->elf.dynobj,
3525 elf_section_data (sec)->sreloc = sreloc;
3528 /* If this is a global symbol, we count the number of
3529 relocations we need for this symbol. */
3532 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3536 /* Track dynamic relocs needed for local syms too.
3537 We really need local syms available to do this
3543 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3548 vpp = &elf_section_data (s)->local_dynrel;
3549 head = (struct ppc_elf_dyn_relocs **) vpp;
3553 if (p == NULL || p->sec != sec)
3555 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3566 if (!MUST_BE_DYN_RELOC (r_type))
3577 /* Merge backend specific data from an object file to the output
3578 object file when linking. */
3581 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3587 if (!is_ppc_elf_target (ibfd->xvec)
3588 || !is_ppc_elf_target (obfd->xvec))
3591 /* Check if we have the same endianess. */
3592 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3595 new_flags = elf_elfheader (ibfd)->e_flags;
3596 old_flags = elf_elfheader (obfd)->e_flags;
3597 if (!elf_flags_init (obfd))
3599 /* First call, no flags set. */
3600 elf_flags_init (obfd) = TRUE;
3601 elf_elfheader (obfd)->e_flags = new_flags;
3604 /* Compatible flags are ok. */
3605 else if (new_flags == old_flags)
3608 /* Incompatible flags. */
3611 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3612 to be linked with either. */
3614 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3615 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3618 (*_bfd_error_handler)
3619 (_("%B: compiled with -mrelocatable and linked with "
3620 "modules compiled normally"), ibfd);
3622 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3623 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3626 (*_bfd_error_handler)
3627 (_("%B: compiled normally and linked with "
3628 "modules compiled with -mrelocatable"), ibfd);
3631 /* The output is -mrelocatable-lib iff both the input files are. */
3632 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3633 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3635 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3636 but each input file is either -mrelocatable or -mrelocatable-lib. */
3637 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3638 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3639 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3640 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3642 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3643 any module uses it. */
3644 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3646 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3647 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3649 /* Warn about any other mismatches. */
3650 if (new_flags != old_flags)
3653 (*_bfd_error_handler)
3654 (_("%B: uses different e_flags (0x%lx) fields "
3655 "than previous modules (0x%lx)"),
3656 ibfd, (long) new_flags, (long) old_flags);
3661 bfd_set_error (bfd_error_bad_value);
3669 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3670 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3672 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3673 struct bfd_link_info *info,
3677 struct ppc_elf_link_hash_table *htab;
3680 htab = ppc_elf_hash_table (info);
3682 if (htab->plt_type == PLT_UNSET)
3683 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3684 ? PLT_OLD : PLT_NEW);
3686 htab->emit_stub_syms = emit_stub_syms;
3688 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
3690 if (htab->plt_type == PLT_NEW)
3692 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3693 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3695 /* The new PLT is a loaded section. */
3696 if (htab->plt != NULL
3697 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3700 /* The new GOT is not executable. */
3701 if (htab->got != NULL
3702 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3707 /* Stop an unused .glink section from affecting .text alignment. */
3708 if (htab->glink != NULL
3709 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3712 return htab->plt_type == PLT_NEW;
3715 /* Return the section that should be marked against GC for a given
3719 ppc_elf_gc_mark_hook (asection *sec,
3720 struct bfd_link_info *info,
3721 Elf_Internal_Rela *rel,
3722 struct elf_link_hash_entry *h,
3723 Elf_Internal_Sym *sym)
3726 switch (ELF32_R_TYPE (rel->r_info))
3728 case R_PPC_GNU_VTINHERIT:
3729 case R_PPC_GNU_VTENTRY:
3733 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3736 /* Update the got, plt and dynamic reloc reference counts for the
3737 section being removed. */
3740 ppc_elf_gc_sweep_hook (bfd *abfd,
3741 struct bfd_link_info *info,
3743 const Elf_Internal_Rela *relocs)
3745 struct ppc_elf_link_hash_table *htab;
3746 Elf_Internal_Shdr *symtab_hdr;
3747 struct elf_link_hash_entry **sym_hashes;
3748 bfd_signed_vma *local_got_refcounts;
3749 const Elf_Internal_Rela *rel, *relend;
3752 if ((sec->flags & SEC_ALLOC) == 0)
3755 elf_section_data (sec)->local_dynrel = NULL;
3757 htab = ppc_elf_hash_table (info);
3758 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3759 sym_hashes = elf_sym_hashes (abfd);
3760 local_got_refcounts = elf_local_got_refcounts (abfd);
3761 got2 = bfd_get_section_by_name (abfd, ".got2");
3763 relend = relocs + sec->reloc_count;
3764 for (rel = relocs; rel < relend; rel++)
3766 unsigned long r_symndx;
3767 enum elf_ppc_reloc_type r_type;
3768 struct elf_link_hash_entry *h = NULL;
3770 r_symndx = ELF32_R_SYM (rel->r_info);
3771 if (r_symndx >= symtab_hdr->sh_info)
3773 struct ppc_elf_dyn_relocs **pp, *p;
3774 struct ppc_elf_link_hash_entry *eh;
3776 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3777 while (h->root.type == bfd_link_hash_indirect
3778 || h->root.type == bfd_link_hash_warning)
3779 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3780 eh = (struct ppc_elf_link_hash_entry *) h;
3782 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3785 /* Everything must go for SEC. */
3791 r_type = ELF32_R_TYPE (rel->r_info);
3794 case R_PPC_GOT_TLSLD16:
3795 case R_PPC_GOT_TLSLD16_LO:
3796 case R_PPC_GOT_TLSLD16_HI:
3797 case R_PPC_GOT_TLSLD16_HA:
3798 htab->tlsld_got.refcount -= 1;
3801 case R_PPC_GOT_TLSGD16:
3802 case R_PPC_GOT_TLSGD16_LO:
3803 case R_PPC_GOT_TLSGD16_HI:
3804 case R_PPC_GOT_TLSGD16_HA:
3805 case R_PPC_GOT_TPREL16:
3806 case R_PPC_GOT_TPREL16_LO:
3807 case R_PPC_GOT_TPREL16_HI:
3808 case R_PPC_GOT_TPREL16_HA:
3809 case R_PPC_GOT_DTPREL16:
3810 case R_PPC_GOT_DTPREL16_LO:
3811 case R_PPC_GOT_DTPREL16_HI:
3812 case R_PPC_GOT_DTPREL16_HA:
3814 case R_PPC_GOT16_LO:
3815 case R_PPC_GOT16_HI:
3816 case R_PPC_GOT16_HA:
3819 if (h->got.refcount > 0)
3822 else if (local_got_refcounts != NULL)
3824 if (local_got_refcounts[r_symndx] > 0)
3825 local_got_refcounts[r_symndx]--;
3831 case R_PPC_REL14_BRTAKEN:
3832 case R_PPC_REL14_BRNTAKEN:
3834 if (h == NULL || h == htab->elf.hgot)
3841 case R_PPC_ADDR16_LO:
3842 case R_PPC_ADDR16_HI:
3843 case R_PPC_ADDR16_HA:
3845 case R_PPC_ADDR14_BRTAKEN:
3846 case R_PPC_ADDR14_BRNTAKEN:
3853 case R_PPC_PLTREL24:
3854 case R_PPC_PLTREL32:
3855 case R_PPC_PLT16_LO:
3856 case R_PPC_PLT16_HI:
3857 case R_PPC_PLT16_HA:
3860 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3861 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3862 if (ent->plt.refcount > 0)
3863 ent->plt.refcount -= 1;
3874 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3877 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3879 struct ppc_elf_link_hash_table *htab;
3881 htab = ppc_elf_hash_table (info);
3882 if (htab->plt_type == PLT_NEW
3883 && htab->plt != NULL
3884 && htab->plt->output_section != NULL)
3886 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3887 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3890 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3891 FALSE, FALSE, TRUE);
3892 return _bfd_elf_tls_setup (obfd, info);
3895 /* Run through all the TLS relocs looking for optimization
3899 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3900 struct bfd_link_info *info)
3904 struct ppc_elf_link_hash_table *htab;
3906 if (info->relocatable || info->shared)
3909 htab = ppc_elf_hash_table (info);
3910 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3912 Elf_Internal_Sym *locsyms = NULL;
3913 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3915 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3916 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3918 Elf_Internal_Rela *relstart, *rel, *relend;
3919 int expecting_tls_get_addr;
3921 /* Read the relocations. */
3922 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3924 if (relstart == NULL)
3927 expecting_tls_get_addr = 0;
3928 relend = relstart + sec->reloc_count;
3929 for (rel = relstart; rel < relend; rel++)
3931 enum elf_ppc_reloc_type r_type;
3932 unsigned long r_symndx;
3933 struct elf_link_hash_entry *h = NULL;
3935 char tls_set, tls_clear;
3936 bfd_boolean is_local;
3938 r_symndx = ELF32_R_SYM (rel->r_info);
3939 if (r_symndx >= symtab_hdr->sh_info)
3941 struct elf_link_hash_entry **sym_hashes;
3943 sym_hashes = elf_sym_hashes (ibfd);
3944 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3945 while (h->root.type == bfd_link_hash_indirect
3946 || h->root.type == bfd_link_hash_warning)
3947 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3955 r_type = ELF32_R_TYPE (rel->r_info);
3958 case R_PPC_GOT_TLSLD16:
3959 case R_PPC_GOT_TLSLD16_LO:
3960 case R_PPC_GOT_TLSLD16_HI:
3961 case R_PPC_GOT_TLSLD16_HA:
3962 /* These relocs should never be against a symbol
3963 defined in a shared lib. Leave them alone if
3964 that turns out to be the case. */
3965 expecting_tls_get_addr = 0;
3966 htab->tlsld_got.refcount -= 1;
3973 expecting_tls_get_addr = 1;
3976 case R_PPC_GOT_TLSGD16:
3977 case R_PPC_GOT_TLSGD16_LO:
3978 case R_PPC_GOT_TLSGD16_HI:
3979 case R_PPC_GOT_TLSGD16_HA:
3985 tls_set = TLS_TLS | TLS_TPRELGD;
3987 expecting_tls_get_addr = 1;
3990 case R_PPC_GOT_TPREL16:
3991 case R_PPC_GOT_TPREL16_LO:
3992 case R_PPC_GOT_TPREL16_HI:
3993 case R_PPC_GOT_TPREL16_HA:
3994 expecting_tls_get_addr = 0;
3999 tls_clear = TLS_TPREL;
4006 case R_PPC_REL14_BRTAKEN:
4007 case R_PPC_REL14_BRNTAKEN:
4009 if (expecting_tls_get_addr
4011 && h == htab->tls_get_addr)
4013 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
4014 if (ent != NULL && ent->plt.refcount > 0)
4015 ent->plt.refcount -= 1;
4017 expecting_tls_get_addr = 0;
4021 expecting_tls_get_addr = 0;
4029 /* We managed to get rid of a got entry. */
4030 if (h->got.refcount > 0)
4031 h->got.refcount -= 1;
4033 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4037 Elf_Internal_Sym *sym;
4038 bfd_signed_vma *lgot_refs;
4041 if (locsyms == NULL)
4043 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4044 if (locsyms == NULL)
4045 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4046 symtab_hdr->sh_info,
4047 0, NULL, NULL, NULL);
4048 if (locsyms == NULL)
4050 if (elf_section_data (sec)->relocs != relstart)
4055 sym = locsyms + r_symndx;
4056 lgot_refs = elf_local_got_refcounts (ibfd);
4057 if (lgot_refs == NULL)
4061 /* We managed to get rid of a got entry. */
4062 if (lgot_refs[r_symndx] > 0)
4063 lgot_refs[r_symndx] -= 1;
4065 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4066 tls_mask = &lgot_masks[r_symndx];
4069 *tls_mask |= tls_set;
4070 *tls_mask &= ~tls_clear;
4073 if (elf_section_data (sec)->relocs != relstart)
4078 && (symtab_hdr->contents != (unsigned char *) locsyms))
4080 if (!info->keep_memory)
4083 symtab_hdr->contents = (unsigned char *) locsyms;
4089 /* Adjust a symbol defined by a dynamic object and referenced by a
4090 regular object. The current definition is in some section of the
4091 dynamic object, but we're not including those sections. We have to
4092 change the definition to something the rest of the link can
4096 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4097 struct elf_link_hash_entry *h)
4099 struct ppc_elf_link_hash_table *htab;
4101 unsigned int power_of_two;
4104 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4105 h->root.root.string);
4108 /* Make sure we know what is going on here. */
4109 htab = ppc_elf_hash_table (info);
4110 BFD_ASSERT (htab->elf.dynobj != NULL
4112 || h->u.weakdef != NULL
4115 && !h->def_regular)));
4117 /* Deal with function syms. */
4118 if (h->type == STT_FUNC
4121 /* Clear procedure linkage table information for any symbol that
4122 won't need a .plt entry. */
4123 struct plt_entry *ent;
4124 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4125 if (ent->plt.refcount > 0)
4128 || SYMBOL_CALLS_LOCAL (info, h)
4129 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4130 && h->root.type == bfd_link_hash_undefweak))
4132 /* A PLT entry is not required/allowed when:
4134 1. We are not using ld.so; because then the PLT entry
4135 can't be set up, so we can't use one. In this case,
4136 ppc_elf_adjust_dynamic_symbol won't even be called.
4138 2. GC has rendered the entry unused.
4140 3. We know for certain that a call to this symbol
4141 will go to this object, or will remain undefined. */
4142 h->plt.plist = NULL;
4148 h->plt.plist = NULL;
4150 /* If this is a weak symbol, and there is a real definition, the
4151 processor independent code will have arranged for us to see the
4152 real definition first, and we can just use the same value. */
4153 if (h->u.weakdef != NULL)
4155 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4156 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4157 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4158 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4159 if (ELIMINATE_COPY_RELOCS)
4160 h->non_got_ref = h->u.weakdef->non_got_ref;
4164 /* This is a reference to a symbol defined by a dynamic object which
4165 is not a function. */
4167 /* If we are creating a shared library, we must presume that the
4168 only references to the symbol are via the global offset table.
4169 For such cases we need not do anything here; the relocations will
4170 be handled correctly by relocate_section. */
4174 /* If there are no references to this symbol that do not use the
4175 GOT, we don't need to generate a copy reloc. */
4176 if (!h->non_got_ref)
4179 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4180 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4181 do this if there are any small data relocations. */
4182 if (ELIMINATE_COPY_RELOCS
4183 && !ppc_elf_hash_entry (h)->has_sda_refs)
4185 struct ppc_elf_dyn_relocs *p;
4186 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4188 s = p->sec->output_section;
4189 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4202 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4203 h->root.root.string);
4207 /* We must allocate the symbol in our .dynbss section, which will
4208 become part of the .bss section of the executable. There will be
4209 an entry for this symbol in the .dynsym section. The dynamic
4210 object will contain position independent code, so all references
4211 from the dynamic object to this symbol will go through the global
4212 offset table. The dynamic linker will use the .dynsym entry to
4213 determine the address it must put in the global offset table, so
4214 both the dynamic object and the regular object will refer to the
4215 same memory location for the variable.
4217 Of course, if the symbol is referenced using SDAREL relocs, we
4218 must instead allocate it in .sbss. */
4220 if (ppc_elf_hash_entry (h)->has_sda_refs)
4224 BFD_ASSERT (s != NULL);
4226 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4227 copy the initial value out of the dynamic object and into the
4228 runtime process image. We need to remember the offset into the
4229 .rela.bss section we are going to use. */
4230 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4234 if (ppc_elf_hash_entry (h)->has_sda_refs)
4235 srel = htab->relsbss;
4237 srel = htab->relbss;
4238 BFD_ASSERT (srel != NULL);
4239 srel->size += sizeof (Elf32_External_Rela);
4243 /* We need to figure out the alignment required for this symbol. I
4244 have no idea how ELF linkers handle this. */
4245 power_of_two = bfd_log2 (h->size);
4246 if (power_of_two > 4)
4249 /* Apply the required alignment. */
4250 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4251 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4253 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4257 /* Define the symbol as being at this point in the section. */
4258 h->root.u.def.section = s;
4259 h->root.u.def.value = s->size;
4261 /* Increment the section size to make room for the symbol. */
4267 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4268 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4269 specifying the addend on the plt relocation. For -fpic code, the sym
4270 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4271 xxxxxxxx.got2.plt_pic32.<callee>. */
4274 add_stub_sym (struct plt_entry *ent,
4275 struct elf_link_hash_entry *h,
4276 struct bfd_link_info *info)
4278 struct elf_link_hash_entry *sh;
4279 size_t len1, len2, len3;
4282 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4284 if (info->shared || info->pie)
4285 stub = ".plt_pic32.";
4287 stub = ".plt_call32.";
4289 len1 = strlen (h->root.root.string);
4290 len2 = strlen (stub);
4293 len3 = strlen (ent->sec->name);
4294 name = bfd_malloc (len1 + len2 + len3 + 9);
4297 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4299 memcpy (name + 8, ent->sec->name, len3);
4300 memcpy (name + 8 + len3, stub, len2);
4301 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4302 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4305 if (sh->root.type == bfd_link_hash_new)
4307 sh->root.type = bfd_link_hash_defined;
4308 sh->root.u.def.section = htab->glink;
4309 sh->root.u.def.value = ent->glink_offset;
4310 sh->ref_regular = 1;
4311 sh->def_regular = 1;
4312 sh->ref_regular_nonweak = 1;
4313 sh->forced_local = 1;
4319 /* Allocate NEED contiguous space in .got, and return the offset.
4320 Handles allocation of the got header when crossing 32k. */
4323 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4326 unsigned int max_before_header;
4328 if (htab->plt_type == PLT_VXWORKS)
4330 where = htab->got->size;
4331 htab->got->size += need;
4335 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4336 if (need <= htab->got_gap)
4338 where = max_before_header - htab->got_gap;
4339 htab->got_gap -= need;
4343 if (htab->got->size + need > max_before_header
4344 && htab->got->size <= max_before_header)
4346 htab->got_gap = max_before_header - htab->got->size;
4347 htab->got->size = max_before_header + htab->got_header_size;
4349 where = htab->got->size;
4350 htab->got->size += need;
4356 /* Allocate space in associated reloc sections for dynamic relocs. */
4359 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4361 struct bfd_link_info *info = inf;
4362 struct ppc_elf_link_hash_entry *eh;
4363 struct ppc_elf_link_hash_table *htab;
4364 struct ppc_elf_dyn_relocs *p;
4366 if (h->root.type == bfd_link_hash_indirect)
4369 if (h->root.type == bfd_link_hash_warning)
4370 /* When warning symbols are created, they **replace** the "real"
4371 entry in the hash table, thus we never get to see the real
4372 symbol in a hash traversal. So look at it now. */
4373 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4375 htab = ppc_elf_hash_table (info);
4376 if (htab->elf.dynamic_sections_created)
4378 struct plt_entry *ent;
4379 bfd_boolean doneone = FALSE;
4380 bfd_vma plt_offset = 0, glink_offset = 0;
4382 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4383 if (ent->plt.refcount > 0)
4385 /* Make sure this symbol is output as a dynamic symbol. */
4386 if (h->dynindx == -1
4387 && !h->forced_local)
4389 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4394 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4396 asection *s = htab->plt;
4398 if (htab->plt_type == PLT_NEW)
4402 plt_offset = s->size;
4405 ent->plt.offset = plt_offset;
4408 if (!doneone || info->shared || info->pie)
4410 glink_offset = s->size;
4411 s->size += GLINK_ENTRY_SIZE;
4417 h->root.u.def.section = s;
4418 h->root.u.def.value = glink_offset;
4420 ent->glink_offset = glink_offset;
4422 if (htab->emit_stub_syms
4423 && !add_stub_sym (ent, h, info))
4430 /* If this is the first .plt entry, make room
4431 for the special first entry. */
4433 s->size += htab->plt_initial_entry_size;
4435 /* The PowerPC PLT is actually composed of two
4436 parts, the first part is 2 words (for a load
4437 and a jump), and then there is a remaining
4438 word available at the end. */
4439 plt_offset = (htab->plt_initial_entry_size
4440 + (htab->plt_slot_size
4442 - htab->plt_initial_entry_size)
4443 / htab->plt_entry_size)));
4445 /* If this symbol is not defined in a regular
4446 file, and we are not generating a shared
4447 library, then set the symbol to this location
4448 in the .plt. This is required to make
4449 function pointers compare as equal between
4450 the normal executable and the shared library. */
4454 h->root.u.def.section = s;
4455 h->root.u.def.value = plt_offset;
4458 /* Make room for this entry. */
4459 s->size += htab->plt_entry_size;
4460 /* After the 8192nd entry, room for two entries
4462 if (htab->plt_type == PLT_OLD
4463 && (s->size - htab->plt_initial_entry_size)
4464 / htab->plt_entry_size
4465 > PLT_NUM_SINGLE_ENTRIES)
4466 s->size += htab->plt_entry_size;
4468 ent->plt.offset = plt_offset;
4471 /* We also need to make an entry in the .rela.plt section. */
4474 htab->relplt->size += sizeof (Elf32_External_Rela);
4476 if (htab->plt_type == PLT_VXWORKS)
4478 /* Allocate space for the unloaded relocations. */
4482 == (bfd_vma) htab->plt_initial_entry_size)
4484 htab->srelplt2->size
4485 += sizeof (Elf32_External_Rela)
4486 * VXWORKS_PLTRESOLVE_RELOCS;
4489 htab->srelplt2->size
4490 += sizeof (Elf32_External_Rela)
4491 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4494 /* Every PLT entry has an associated GOT entry in
4496 htab->sgotplt->size += 4;
4502 ent->plt.offset = (bfd_vma) -1;
4505 ent->plt.offset = (bfd_vma) -1;
4509 h->plt.plist = NULL;
4515 h->plt.plist = NULL;
4519 eh = (struct ppc_elf_link_hash_entry *) h;
4520 if (eh->elf.got.refcount > 0)
4522 /* Make sure this symbol is output as a dynamic symbol. */
4523 if (eh->elf.dynindx == -1
4524 && !eh->elf.forced_local)
4526 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4530 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4531 && !eh->elf.def_dynamic)
4532 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4533 eh->elf.got.offset = (bfd_vma) -1;
4537 unsigned int need = 0;
4538 if ((eh->tls_mask & TLS_TLS) != 0)
4540 if ((eh->tls_mask & TLS_LD) != 0)
4542 if ((eh->tls_mask & TLS_GD) != 0)
4544 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4546 if ((eh->tls_mask & TLS_DTPREL) != 0)
4551 eh->elf.got.offset = allocate_got (htab, need);
4552 dyn = htab->elf.dynamic_sections_created;
4554 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4555 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4556 || eh->elf.root.type != bfd_link_hash_undefweak))
4558 /* All the entries we allocated need relocs.
4559 Except LD only needs one. */
4560 if ((eh->tls_mask & TLS_LD) != 0)
4562 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4567 eh->elf.got.offset = (bfd_vma) -1;
4569 if (eh->dyn_relocs == NULL)
4572 /* In the shared -Bsymbolic case, discard space allocated for
4573 dynamic pc-relative relocs against symbols which turn out to be
4574 defined in regular objects. For the normal shared case, discard
4575 space for relocs that have become local due to symbol visibility
4580 /* Relocs that use pc_count are those that appear on a call insn,
4581 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4582 generated via assembly. We want calls to protected symbols to
4583 resolve directly to the function rather than going via the plt.
4584 If people want function pointer comparisons to work as expected
4585 then they should avoid writing weird assembly. */
4586 if (SYMBOL_CALLS_LOCAL (info, h))
4588 struct ppc_elf_dyn_relocs **pp;
4590 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4592 p->count -= p->pc_count;
4601 /* Also discard relocs on undefined weak syms with non-default
4603 if (eh->dyn_relocs != NULL
4604 && h->root.type == bfd_link_hash_undefweak)
4606 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4607 eh->dyn_relocs = NULL;
4609 /* Make sure undefined weak symbols are output as a dynamic
4611 else if (h->dynindx == -1
4612 && !h->forced_local)
4614 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4619 else if (ELIMINATE_COPY_RELOCS)
4621 /* For the non-shared case, discard space for relocs against
4622 symbols which turn out to need copy relocs or are not
4629 /* Make sure this symbol is output as a dynamic symbol.
4630 Undefined weak syms won't yet be marked as dynamic. */
4631 if (h->dynindx == -1
4632 && !h->forced_local)
4634 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4638 /* If that succeeded, we know we'll be keeping all the
4640 if (h->dynindx != -1)
4644 eh->dyn_relocs = NULL;
4649 /* Finally, allocate space. */
4650 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4652 asection *sreloc = elf_section_data (p->sec)->sreloc;
4653 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4659 /* Find any dynamic relocs that apply to read-only sections. */
4662 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4664 struct ppc_elf_dyn_relocs *p;
4666 if (h->root.type == bfd_link_hash_indirect)
4669 if (h->root.type == bfd_link_hash_warning)
4670 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4672 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4674 asection *s = p->sec->output_section;
4677 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4678 == (SEC_READONLY | SEC_ALLOC)))
4680 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4682 /* Not an error, just cut short the traversal. */
4689 /* Set the sizes of the dynamic sections. */
4692 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4693 struct bfd_link_info *info)
4695 struct ppc_elf_link_hash_table *htab;
4701 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4704 htab = ppc_elf_hash_table (info);
4705 BFD_ASSERT (htab->elf.dynobj != NULL);
4707 if (elf_hash_table (info)->dynamic_sections_created)
4709 /* Set the contents of the .interp section to the interpreter. */
4710 if (info->executable)
4712 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4713 BFD_ASSERT (s != NULL);
4714 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4715 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4719 if (htab->plt_type == PLT_OLD)
4720 htab->got_header_size = 16;
4721 else if (htab->plt_type == PLT_NEW)
4722 htab->got_header_size = 12;
4724 /* Set up .got offsets for local syms, and space for local dynamic
4726 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4728 bfd_signed_vma *local_got;
4729 bfd_signed_vma *end_local_got;
4731 bfd_size_type locsymcount;
4732 Elf_Internal_Shdr *symtab_hdr;
4734 if (!is_ppc_elf_target (ibfd->xvec))
4737 for (s = ibfd->sections; s != NULL; s = s->next)
4739 struct ppc_elf_dyn_relocs *p;
4741 for (p = ((struct ppc_elf_dyn_relocs *)
4742 elf_section_data (s)->local_dynrel);
4746 if (!bfd_is_abs_section (p->sec)
4747 && bfd_is_abs_section (p->sec->output_section))
4749 /* Input section has been discarded, either because
4750 it is a copy of a linkonce section or due to
4751 linker script /DISCARD/, so we'll be discarding
4754 else if (p->count != 0)
4756 elf_section_data (p->sec)->sreloc->size
4757 += p->count * sizeof (Elf32_External_Rela);
4758 if ((p->sec->output_section->flags
4759 & (SEC_READONLY | SEC_ALLOC))
4760 == (SEC_READONLY | SEC_ALLOC))
4761 info->flags |= DF_TEXTREL;
4766 local_got = elf_local_got_refcounts (ibfd);
4770 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4771 locsymcount = symtab_hdr->sh_info;
4772 end_local_got = local_got + locsymcount;
4773 lgot_masks = (char *) end_local_got;
4774 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4777 if (*lgot_masks == (TLS_TLS | TLS_LD))
4779 /* If just an LD reloc, we'll just use
4780 htab->tlsld_got.offset. */
4781 htab->tlsld_got.refcount += 1;
4782 *local_got = (bfd_vma) -1;
4786 unsigned int need = 0;
4787 if ((*lgot_masks & TLS_TLS) != 0)
4789 if ((*lgot_masks & TLS_GD) != 0)
4791 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4793 if ((*lgot_masks & TLS_DTPREL) != 0)
4798 *local_got = allocate_got (htab, need);
4800 htab->relgot->size += (need
4801 * (sizeof (Elf32_External_Rela) / 4));
4805 *local_got = (bfd_vma) -1;
4808 if (htab->tlsld_got.refcount > 0)
4810 htab->tlsld_got.offset = allocate_got (htab, 8);
4812 htab->relgot->size += sizeof (Elf32_External_Rela);
4815 htab->tlsld_got.offset = (bfd_vma) -1;
4817 /* Allocate space for global sym dynamic relocs. */
4818 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4820 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
4822 unsigned int g_o_t = 32768;
4824 /* If we haven't allocated the header, do so now. When we get here,
4825 for old plt/got the got size will be 0 to 32764 (not allocated),
4826 or 32780 to 65536 (header allocated). For new plt/got, the
4827 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4828 if (htab->got->size <= 32768)
4830 g_o_t = htab->got->size;
4831 if (htab->plt_type == PLT_OLD)
4833 htab->got->size += htab->got_header_size;
4836 htab->elf.hgot->root.u.def.value = g_o_t;
4839 if (htab->glink != NULL && htab->glink->size != 0)
4841 htab->glink_pltresolve = htab->glink->size;
4842 /* Space for the branch table. */
4843 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4844 /* Pad out to align the start of PLTresolve. */
4845 htab->glink->size += -htab->glink->size & 15;
4846 htab->glink->size += GLINK_PLTRESOLVE;
4848 if (htab->emit_stub_syms)
4850 struct elf_link_hash_entry *sh;
4851 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4852 TRUE, FALSE, FALSE);
4855 if (sh->root.type == bfd_link_hash_new)
4857 sh->root.type = bfd_link_hash_defined;
4858 sh->root.u.def.section = htab->glink;
4859 sh->root.u.def.value = htab->glink_pltresolve;
4860 sh->ref_regular = 1;
4861 sh->def_regular = 1;
4862 sh->ref_regular_nonweak = 1;
4863 sh->forced_local = 1;
4866 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4867 TRUE, FALSE, FALSE);
4870 if (sh->root.type == bfd_link_hash_new)
4872 sh->root.type = bfd_link_hash_defined;
4873 sh->root.u.def.section = htab->glink;
4874 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4875 sh->ref_regular = 1;
4876 sh->def_regular = 1;
4877 sh->ref_regular_nonweak = 1;
4878 sh->forced_local = 1;
4884 /* We've now determined the sizes of the various dynamic sections.
4885 Allocate memory for them. */
4887 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4889 bfd_boolean strip_section = TRUE;
4891 if ((s->flags & SEC_LINKER_CREATED) == 0)
4897 || s == htab->sgotplt
4899 || s == htab->dynbss
4900 || s == htab->dynsbss)
4902 /* We'd like to strip these sections if they aren't needed, but if
4903 we've exported dynamic symbols from them we must leave them.
4904 It's too late to tell BFD to get rid of the symbols. */
4905 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
4906 strip_section = FALSE;
4907 /* Strip this section if we don't need it; see the
4910 else if (s == htab->sdata[0].section
4911 || s == htab->sdata[1].section)
4913 /* Strip these too. */
4915 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
4919 /* Remember whether there are any relocation sections. */
4922 /* We use the reloc_count field as a counter if we need
4923 to copy relocs into the output file. */
4929 /* It's not one of our sections, so don't allocate space. */
4933 if (s->size == 0 && strip_section)
4935 /* If we don't need this section, strip it from the
4936 output file. This is mostly to handle .rela.bss and
4937 .rela.plt. We must create both sections in
4938 create_dynamic_sections, because they must be created
4939 before the linker maps input sections to output
4940 sections. The linker does that before
4941 adjust_dynamic_symbol is called, and it is that
4942 function which decides whether anything needs to go
4943 into these sections. */
4944 s->flags |= SEC_EXCLUDE;
4948 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4951 /* Allocate memory for the section contents. */
4952 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4953 if (s->contents == NULL)
4957 if (htab->elf.dynamic_sections_created)
4959 /* Add some entries to the .dynamic section. We fill in the
4960 values later, in ppc_elf_finish_dynamic_sections, but we
4961 must add the entries now so that we get the correct size for
4962 the .dynamic section. The DT_DEBUG entry is filled in by the
4963 dynamic linker and used by the debugger. */
4964 #define add_dynamic_entry(TAG, VAL) \
4965 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4967 if (info->executable)
4969 if (!add_dynamic_entry (DT_DEBUG, 0))
4973 if (htab->plt != NULL && htab->plt->size != 0)
4975 if (!add_dynamic_entry (DT_PLTGOT, 0)
4976 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4977 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4978 || !add_dynamic_entry (DT_JMPREL, 0))
4982 if (htab->glink != NULL && htab->glink->size != 0)
4984 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4990 if (!add_dynamic_entry (DT_RELA, 0)
4991 || !add_dynamic_entry (DT_RELASZ, 0)
4992 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4996 /* If any dynamic relocs apply to a read-only section, then we
4997 need a DT_TEXTREL entry. */
4998 if ((info->flags & DF_TEXTREL) == 0)
4999 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
5002 if ((info->flags & DF_TEXTREL) != 0)
5004 if (!add_dynamic_entry (DT_TEXTREL, 0))
5008 #undef add_dynamic_entry
5013 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5015 static const int shared_stub_entry[] =
5017 0x7c0802a6, /* mflr 0 */
5018 0x429f0005, /* bcl 20, 31, .Lxxx */
5019 0x7d6802a6, /* mflr 11 */
5020 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5021 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5022 0x7c0803a6, /* mtlr 0 */
5023 0x7d6903a6, /* mtctr 11 */
5024 0x4e800420, /* bctr */
5027 static const int stub_entry[] =
5029 0x3d600000, /* lis 11,xxx@ha */
5030 0x396b0000, /* addi 11,11,xxx@l */
5031 0x7d6903a6, /* mtctr 11 */
5032 0x4e800420, /* bctr */
5036 ppc_elf_relax_section (bfd *abfd,
5038 struct bfd_link_info *link_info,
5043 struct one_fixup *next;
5049 Elf_Internal_Shdr *symtab_hdr;
5050 bfd_byte *contents = NULL;
5051 Elf_Internal_Sym *isymbuf = NULL;
5052 Elf_Internal_Rela *internal_relocs = NULL;
5053 Elf_Internal_Rela *irel, *irelend;
5054 struct one_fixup *fixups = NULL;
5055 bfd_boolean changed;
5056 struct ppc_elf_link_hash_table *htab;
5057 bfd_size_type trampoff;
5062 /* Nothing to do if there are no relocations, and no need to do
5063 anything with non-alloc sections. */
5064 if ((isec->flags & SEC_ALLOC) == 0
5065 || (isec->flags & SEC_RELOC) == 0
5066 || isec->reloc_count == 0)
5069 trampoff = (isec->size + 3) & (bfd_vma) -4;
5070 /* Space for a branch around any trampolines. */
5073 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5075 /* Get a copy of the native relocations. */
5076 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5077 link_info->keep_memory);
5078 if (internal_relocs == NULL)
5081 htab = ppc_elf_hash_table (link_info);
5082 got2 = bfd_get_section_by_name (abfd, ".got2");
5084 irelend = internal_relocs + isec->reloc_count;
5085 for (irel = internal_relocs; irel < irelend; irel++)
5087 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5088 bfd_vma symaddr, reladdr, toff, roff;
5090 struct one_fixup *f;
5091 size_t insn_offset = 0;
5092 bfd_vma max_branch_offset, val;
5095 unsigned char sym_type;
5100 case R_PPC_LOCAL24PC:
5101 case R_PPC_PLTREL24:
5102 max_branch_offset = 1 << 25;
5106 case R_PPC_REL14_BRTAKEN:
5107 case R_PPC_REL14_BRNTAKEN:
5108 max_branch_offset = 1 << 15;
5115 /* Get the value of the symbol referred to by the reloc. */
5116 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5118 /* A local symbol. */
5119 Elf_Internal_Sym *isym;
5121 /* Read this BFD's local symbols. */
5122 if (isymbuf == NULL)
5124 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5125 if (isymbuf == NULL)
5126 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5127 symtab_hdr->sh_info, 0,
5132 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5133 if (isym->st_shndx == SHN_UNDEF)
5134 continue; /* We can't do anything with undefined symbols. */
5135 else if (isym->st_shndx == SHN_ABS)
5136 tsec = bfd_abs_section_ptr;
5137 else if (isym->st_shndx == SHN_COMMON)
5138 tsec = bfd_com_section_ptr;
5140 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5142 toff = isym->st_value;
5143 sym_type = ELF_ST_TYPE (isym->st_info);
5147 /* Global symbol handling. */
5149 struct elf_link_hash_entry *h;
5151 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5152 h = elf_sym_hashes (abfd)[indx];
5154 while (h->root.type == bfd_link_hash_indirect
5155 || h->root.type == bfd_link_hash_warning)
5156 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5160 if (r_type == R_PPC_PLTREL24
5161 && htab->plt != NULL)
5163 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5167 if (htab->plt_type == PLT_NEW)
5170 toff = ent->glink_offset;
5175 toff = ent->plt.offset;
5181 else if (h->root.type == bfd_link_hash_defined
5182 || h->root.type == bfd_link_hash_defweak)
5184 tsec = h->root.u.def.section;
5185 toff = h->root.u.def.value;
5193 /* If the branch and target are in the same section, you have
5194 no hope of adding stubs. We'll error out later should the
5199 /* There probably isn't any reason to handle symbols in
5200 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5201 attribute for a code section, and we are only looking at
5202 branches. However, implement it correctly here as a
5203 reference for other target relax_section functions. */
5204 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5206 /* At this stage in linking, no SEC_MERGE symbol has been
5207 adjusted, so all references to such symbols need to be
5208 passed through _bfd_merged_section_offset. (Later, in
5209 relocate_section, all SEC_MERGE symbols *except* for
5210 section symbols have been adjusted.)
5212 gas may reduce relocations against symbols in SEC_MERGE
5213 sections to a relocation against the section symbol when
5214 the original addend was zero. When the reloc is against
5215 a section symbol we should include the addend in the
5216 offset passed to _bfd_merged_section_offset, since the
5217 location of interest is the original symbol. On the
5218 other hand, an access to "sym+addend" where "sym" is not
5219 a section symbol should not include the addend; Such an
5220 access is presumed to be an offset from "sym"; The
5221 location of interest is just "sym". */
5222 if (sym_type == STT_SECTION)
5223 toff += irel->r_addend;
5225 toff = _bfd_merged_section_offset (abfd, &tsec,
5226 elf_section_data (tsec)->sec_info,
5229 if (sym_type != STT_SECTION)
5230 toff += irel->r_addend;
5232 /* PLTREL24 addends are special. */
5233 else if (r_type != R_PPC_PLTREL24)
5234 toff += irel->r_addend;
5236 /* Attempted -shared link of non-pic code loses. */
5237 if (tsec->output_section == NULL)
5240 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5242 roff = irel->r_offset;
5243 reladdr = isec->output_section->vma + isec->output_offset + roff;
5245 /* If the branch is in range, no need to do anything. */
5246 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5249 /* Look for an existing fixup to this address. */
5250 for (f = fixups; f ; f = f->next)
5251 if (f->tsec == tsec && f->toff == toff)
5257 unsigned long stub_rtype;
5259 val = trampoff - roff;
5260 if (val >= max_branch_offset)
5261 /* Oh dear, we can't reach a trampoline. Don't try to add
5262 one. We'll report an error later. */
5265 if (link_info->shared)
5267 size = 4 * ARRAY_SIZE (shared_stub_entry);
5269 stub_rtype = R_PPC_RELAX32PC;
5273 size = 4 * ARRAY_SIZE (stub_entry);
5275 stub_rtype = R_PPC_RELAX32;
5278 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5279 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5281 if (tsec == htab->plt
5282 || tsec == htab->glink)
5283 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5285 /* Hijack the old relocation. Since we need two
5286 relocations for this use a "composite" reloc. */
5287 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5289 irel->r_offset = trampoff + insn_offset;
5291 /* Record the fixup so we don't do it again this section. */
5292 f = bfd_malloc (sizeof (*f));
5296 f->trampoff = trampoff;
5303 val = f->trampoff - roff;
5304 if (val >= max_branch_offset)
5307 /* Nop out the reloc, since we're finalizing things here. */
5308 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5311 /* Get the section contents. */
5312 if (contents == NULL)
5314 /* Get cached copy if it exists. */
5315 if (elf_section_data (isec)->this_hdr.contents != NULL)
5316 contents = elf_section_data (isec)->this_hdr.contents;
5319 /* Go get them off disk. */
5320 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5325 /* Fix up the existing branch to hit the trampoline. */
5326 hit_addr = contents + roff;
5330 case R_PPC_LOCAL24PC:
5331 case R_PPC_PLTREL24:
5332 t0 = bfd_get_32 (abfd, hit_addr);
5334 t0 |= val & 0x3fffffc;
5335 bfd_put_32 (abfd, t0, hit_addr);
5339 case R_PPC_REL14_BRTAKEN:
5340 case R_PPC_REL14_BRNTAKEN:
5341 t0 = bfd_get_32 (abfd, hit_addr);
5344 bfd_put_32 (abfd, t0, hit_addr);
5349 /* Write out the trampolines. */
5350 changed = fixups != NULL;
5360 struct one_fixup *f = fixups;
5361 fixups = fixups->next;
5366 contents = bfd_realloc (contents, trampoff);
5367 if (contents == NULL)
5370 isec->size = (isec->size + 3) & (bfd_vma) -4;
5371 /* Branch around the trampolines. */
5372 val = trampoff - isec->size + 0x48000000;
5373 dest = contents + isec->size;
5374 isec->size = trampoff;
5375 bfd_put_32 (abfd, val, dest);
5378 if (link_info->shared)
5380 stub = shared_stub_entry;
5381 size = ARRAY_SIZE (shared_stub_entry);
5386 size = ARRAY_SIZE (stub_entry);
5390 while (dest < contents + trampoff)
5392 bfd_put_32 (abfd, stub[i], dest);
5398 BFD_ASSERT (i == 0);
5402 && symtab_hdr->contents != (unsigned char *) isymbuf)
5404 if (! link_info->keep_memory)
5408 /* Cache the symbols for elf_link_input_bfd. */
5409 symtab_hdr->contents = (unsigned char *) isymbuf;
5413 if (contents != NULL
5414 && elf_section_data (isec)->this_hdr.contents != contents)
5416 if (!changed && !link_info->keep_memory)
5420 /* Cache the section contents for elf_link_input_bfd. */
5421 elf_section_data (isec)->this_hdr.contents = contents;
5425 if (elf_section_data (isec)->relocs != internal_relocs)
5428 free (internal_relocs);
5430 elf_section_data (isec)->relocs = internal_relocs;
5437 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5439 if (contents != NULL
5440 && elf_section_data (isec)->this_hdr.contents != contents)
5442 if (internal_relocs != NULL
5443 && elf_section_data (isec)->relocs != internal_relocs)
5444 free (internal_relocs);
5448 /* What to do when ld finds relocations against symbols defined in
5449 discarded sections. */
5452 ppc_elf_action_discarded (asection *sec)
5454 if (strcmp (".fixup", sec->name) == 0)
5457 if (strcmp (".got2", sec->name) == 0)
5460 return _bfd_elf_default_action_discarded (sec);
5463 /* Fill in the address for a pointer generated in a linker section. */
5466 elf_finish_pointer_linker_section (bfd *input_bfd,
5467 elf_linker_section_t *lsect,
5468 struct elf_link_hash_entry *h,
5470 const Elf_Internal_Rela *rel)
5472 elf_linker_section_pointers_t *linker_section_ptr;
5474 BFD_ASSERT (lsect != NULL);
5478 /* Handle global symbol. */
5479 struct ppc_elf_link_hash_entry *eh;
5481 eh = (struct ppc_elf_link_hash_entry *) h;
5482 BFD_ASSERT (eh->elf.def_regular);
5483 linker_section_ptr = eh->linker_section_pointer;
5487 /* Handle local symbol. */
5488 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5490 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5491 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5494 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5497 BFD_ASSERT (linker_section_ptr != NULL);
5499 /* Offset will always be a multiple of four, so use the bottom bit
5500 as a "written" flag. */
5501 if ((linker_section_ptr->offset & 1) == 0)
5503 bfd_put_32 (lsect->section->owner,
5504 relocation + linker_section_ptr->addend,
5505 lsect->section->contents + linker_section_ptr->offset);
5506 linker_section_ptr->offset += 1;
5509 relocation = (lsect->section->output_offset
5510 + linker_section_ptr->offset - 1
5515 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5516 lsect->name, (long) relocation, (long) relocation);
5519 /* Subtract out the addend, because it will get added back in by the normal
5521 return relocation - linker_section_ptr->addend;
5524 /* The RELOCATE_SECTION function is called by the ELF backend linker
5525 to handle the relocations for a section.
5527 The relocs are always passed as Rela structures; if the section
5528 actually uses Rel structures, the r_addend field will always be
5531 This function is responsible for adjust the section contents as
5532 necessary, and (if using Rela relocs and generating a
5533 relocatable output file) adjusting the reloc addend as
5536 This function does not have to worry about setting the reloc
5537 address or the reloc symbol index.
5539 LOCAL_SYMS is a pointer to the swapped in local symbols.
5541 LOCAL_SECTIONS is an array giving the section in the input file
5542 corresponding to the st_shndx field of each local symbol.
5544 The global hash table entry for the global symbols can be found
5545 via elf_sym_hashes (input_bfd).
5547 When generating relocatable output, this function must handle
5548 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5549 going to be the section symbol corresponding to the output
5550 section, which means that the addend must be adjusted
5554 ppc_elf_relocate_section (bfd *output_bfd,
5555 struct bfd_link_info *info,
5557 asection *input_section,
5559 Elf_Internal_Rela *relocs,
5560 Elf_Internal_Sym *local_syms,
5561 asection **local_sections)
5563 Elf_Internal_Shdr *symtab_hdr;
5564 struct elf_link_hash_entry **sym_hashes;
5565 struct ppc_elf_link_hash_table *htab;
5566 Elf_Internal_Rela *rel;
5567 Elf_Internal_Rela *relend;
5568 Elf_Internal_Rela outrel;
5570 asection *got2, *sreloc = NULL;
5571 bfd_vma *local_got_offsets;
5572 bfd_boolean ret = TRUE;
5573 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5576 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5577 "%ld relocations%s",
5578 input_bfd, input_section,
5579 (long) input_section->reloc_count,
5580 (info->relocatable) ? " (relocatable)" : "");
5583 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5585 /* Initialize howto table if not already done. */
5586 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5587 ppc_elf_howto_init ();
5589 htab = ppc_elf_hash_table (info);
5590 local_got_offsets = elf_local_got_offsets (input_bfd);
5591 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5592 sym_hashes = elf_sym_hashes (input_bfd);
5594 relend = relocs + input_section->reloc_count;
5595 for (; rel < relend; rel++)
5597 enum elf_ppc_reloc_type r_type;
5599 bfd_reloc_status_type r;
5600 Elf_Internal_Sym *sym;
5602 struct elf_link_hash_entry *h;
5603 const char *sym_name;
5604 reloc_howto_type *howto;
5605 unsigned long r_symndx;
5607 bfd_vma branch_bit, insn, from;
5608 bfd_boolean unresolved_reloc;
5610 unsigned int tls_type, tls_mask, tls_gd;
5612 r_type = ELF32_R_TYPE (rel->r_info);
5616 unresolved_reloc = FALSE;
5618 r_symndx = ELF32_R_SYM (rel->r_info);
5620 if (r_symndx < symtab_hdr->sh_info)
5622 sym = local_syms + r_symndx;
5623 sec = local_sections[r_symndx];
5624 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5626 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5630 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5631 r_symndx, symtab_hdr, sym_hashes,
5633 unresolved_reloc, warned);
5635 sym_name = h->root.root.string;
5638 if (sec != NULL && elf_discarded_section (sec))
5640 /* For relocs against symbols from removed linkonce sections,
5641 or sections discarded by a linker script, we just want the
5642 section contents zeroed. Avoid any special processing. */
5644 if (r_type < R_PPC_max)
5645 howto = ppc_elf_howto_table[r_type];
5646 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
5652 if (info->relocatable)
5655 && r_type == R_PPC_PLTREL24
5656 && rel->r_addend >= 32768)
5658 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5659 addend specifies the GOT pointer offset within .got2. */
5660 rel->r_addend += got2->output_offset;
5665 /* TLS optimizations. Replace instruction sequences and relocs
5666 based on information we collected in tls_optimize. We edit
5667 RELOCS so that --emit-relocs will output something sensible
5668 for the final instruction stream. */
5671 if (IS_PPC_TLS_RELOC (r_type))
5674 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5675 else if (local_got_offsets != NULL)
5678 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5679 tls_mask = lgot_masks[r_symndx];
5683 /* Ensure reloc mapping code below stays sane. */
5684 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5685 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5686 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5687 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5688 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5689 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5690 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5691 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5698 case R_PPC_GOT_TPREL16:
5699 case R_PPC_GOT_TPREL16_LO:
5701 && (tls_mask & TLS_TPREL) == 0)
5704 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
5706 insn |= 0x3c020000; /* addis 0,2,0 */
5707 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
5708 r_type = R_PPC_TPREL16_HA;
5709 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5715 && (tls_mask & TLS_TPREL) == 0)
5718 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5719 if ((insn & ((31 << 26) | (31 << 11)))
5720 == ((31 << 26) | (2 << 11)))
5721 rtra = insn & ((1 << 26) - (1 << 16));
5722 else if ((insn & ((31 << 26) | (31 << 16)))
5723 == ((31 << 26) | (2 << 16)))
5724 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5727 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5730 else if ((insn & (31 << 1)) == 23 << 1
5731 && ((insn & (31 << 6)) < 14 << 6
5732 || ((insn & (31 << 6)) >= 16 << 6
5733 && (insn & (31 << 6)) < 24 << 6)))
5734 /* load and store indexed -> dform. */
5735 insn = (32 | ((insn >> 6) & 31)) << 26;
5736 else if ((insn & (31 << 1)) == 21 << 1
5737 && (insn & (0x1a << 6)) == 0)
5738 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5739 insn = (((58 | ((insn >> 6) & 4)) << 26)
5740 | ((insn >> 6) & 1));
5741 else if ((insn & (31 << 1)) == 21 << 1
5742 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5744 insn = (58 << 26) | 2;
5748 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5749 r_type = R_PPC_TPREL16_LO;
5750 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5752 /* Was PPC_TLS which sits on insn boundary, now
5753 PPC_TPREL16_LO which is at low-order half-word. */
5754 rel->r_offset += d_offset;
5758 case R_PPC_GOT_TLSGD16_HI:
5759 case R_PPC_GOT_TLSGD16_HA:
5760 tls_gd = TLS_TPRELGD;
5761 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5765 case R_PPC_GOT_TLSLD16_HI:
5766 case R_PPC_GOT_TLSLD16_HA:
5767 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5770 if ((tls_mask & tls_gd) != 0)
5771 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5772 + R_PPC_GOT_TPREL16);
5775 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5776 rel->r_offset -= d_offset;
5777 r_type = R_PPC_NONE;
5779 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5783 case R_PPC_GOT_TLSGD16:
5784 case R_PPC_GOT_TLSGD16_LO:
5785 tls_gd = TLS_TPRELGD;
5786 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5787 goto tls_get_addr_check;
5790 case R_PPC_GOT_TLSLD16:
5791 case R_PPC_GOT_TLSLD16_LO:
5792 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5795 if (rel + 1 < relend)
5797 enum elf_ppc_reloc_type r_type2;
5798 unsigned long r_symndx2;
5799 struct elf_link_hash_entry *h2;
5800 bfd_vma insn1, insn2;
5803 /* The next instruction should be a call to
5804 __tls_get_addr. Peek at the reloc to be sure. */
5805 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5806 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5807 if (r_symndx2 < symtab_hdr->sh_info
5808 || (r_type2 != R_PPC_REL14
5809 && r_type2 != R_PPC_REL14_BRTAKEN
5810 && r_type2 != R_PPC_REL14_BRNTAKEN
5811 && r_type2 != R_PPC_REL24
5812 && r_type2 != R_PPC_PLTREL24))
5815 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5816 while (h2->root.type == bfd_link_hash_indirect
5817 || h2->root.type == bfd_link_hash_warning)
5818 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5819 if (h2 == NULL || h2 != htab->tls_get_addr)
5822 /* OK, it checks out. Replace the call. */
5823 offset = rel[1].r_offset;
5824 insn1 = bfd_get_32 (output_bfd,
5825 contents + rel->r_offset - d_offset);
5826 if ((tls_mask & tls_gd) != 0)
5829 insn1 &= (1 << 26) - 1;
5830 insn1 |= 32 << 26; /* lwz */
5831 insn2 = 0x7c631214; /* add 3,3,2 */
5832 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5833 rel[1].r_addend = 0;
5834 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5835 + R_PPC_GOT_TPREL16);
5836 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5841 insn1 = 0x3c620000; /* addis 3,2,0 */
5842 insn2 = 0x38630000; /* addi 3,3,0 */
5845 /* Was an LD reloc. */
5847 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5849 r_type = R_PPC_TPREL16_HA;
5850 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5851 rel[1].r_info = ELF32_R_INFO (r_symndx,
5853 rel[1].r_offset += d_offset;
5854 rel[1].r_addend = rel->r_addend;
5856 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
5857 bfd_put_32 (output_bfd, insn2, contents + offset);
5860 /* We changed the symbol on an LD reloc. Start over
5861 in order to get h, sym, sec etc. right. */
5870 /* Handle other relocations that tweak non-addend part of insn. */
5877 /* Branch taken prediction relocations. */
5878 case R_PPC_ADDR14_BRTAKEN:
5879 case R_PPC_REL14_BRTAKEN:
5880 branch_bit = BRANCH_PREDICT_BIT;
5883 /* Branch not taken prediction relocations. */
5884 case R_PPC_ADDR14_BRNTAKEN:
5885 case R_PPC_REL14_BRNTAKEN:
5886 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5887 insn &= ~BRANCH_PREDICT_BIT;
5890 from = (rel->r_offset
5891 + input_section->output_offset
5892 + input_section->output_section->vma);
5894 /* Invert 'y' bit if not the default. */
5895 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5896 insn ^= BRANCH_PREDICT_BIT;
5898 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5902 addend = rel->r_addend;
5905 if (r_type < R_PPC_max)
5906 howto = ppc_elf_howto_table[r_type];
5910 (*_bfd_error_handler)
5911 (_("%B: unknown relocation type %d for symbol %s"),
5912 input_bfd, (int) r_type, sym_name);
5914 bfd_set_error (bfd_error_bad_value);
5920 case R_PPC_EMB_MRKREF:
5921 case R_PPC_GNU_VTINHERIT:
5922 case R_PPC_GNU_VTENTRY:
5925 /* GOT16 relocations. Like an ADDR16 using the symbol's
5926 address in the GOT as relocation value instead of the
5927 symbol's value itself. Also, create a GOT entry for the
5928 symbol and put the symbol value there. */
5929 case R_PPC_GOT_TLSGD16:
5930 case R_PPC_GOT_TLSGD16_LO:
5931 case R_PPC_GOT_TLSGD16_HI:
5932 case R_PPC_GOT_TLSGD16_HA:
5933 tls_type = TLS_TLS | TLS_GD;
5936 case R_PPC_GOT_TLSLD16:
5937 case R_PPC_GOT_TLSLD16_LO:
5938 case R_PPC_GOT_TLSLD16_HI:
5939 case R_PPC_GOT_TLSLD16_HA:
5940 tls_type = TLS_TLS | TLS_LD;
5943 case R_PPC_GOT_TPREL16:
5944 case R_PPC_GOT_TPREL16_LO:
5945 case R_PPC_GOT_TPREL16_HI:
5946 case R_PPC_GOT_TPREL16_HA:
5947 tls_type = TLS_TLS | TLS_TPREL;
5950 case R_PPC_GOT_DTPREL16:
5951 case R_PPC_GOT_DTPREL16_LO:
5952 case R_PPC_GOT_DTPREL16_HI:
5953 case R_PPC_GOT_DTPREL16_HA:
5954 tls_type = TLS_TLS | TLS_DTPREL;
5958 case R_PPC_GOT16_LO:
5959 case R_PPC_GOT16_HI:
5960 case R_PPC_GOT16_HA:
5963 /* Relocation is to the entry for this symbol in the global
5969 if (htab->got == NULL)
5973 if (tls_type == (TLS_TLS | TLS_LD)
5975 || !h->def_dynamic))
5976 offp = &htab->tlsld_got.offset;
5980 dyn = htab->elf.dynamic_sections_created;
5981 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5983 && SYMBOL_REFERENCES_LOCAL (info, h)))
5984 /* This is actually a static link, or it is a
5985 -Bsymbolic link and the symbol is defined
5986 locally, or the symbol was forced to be local
5987 because of a version file. */
5992 unresolved_reloc = FALSE;
5994 offp = &h->got.offset;
5998 if (local_got_offsets == NULL)
6000 offp = &local_got_offsets[r_symndx];
6003 /* The offset must always be a multiple of 4. We use the
6004 least significant bit to record whether we have already
6005 processed this entry. */
6011 unsigned int tls_m = (tls_mask
6012 & (TLS_LD | TLS_GD | TLS_DTPREL
6013 | TLS_TPREL | TLS_TPRELGD));
6015 if (offp == &htab->tlsld_got.offset)
6021 /* We might have multiple got entries for this sym.
6022 Initialize them all. */
6027 if ((tls_m & TLS_LD) != 0)
6029 tls_ty = TLS_TLS | TLS_LD;
6032 else if ((tls_m & TLS_GD) != 0)
6034 tls_ty = TLS_TLS | TLS_GD;
6037 else if ((tls_m & TLS_DTPREL) != 0)
6039 tls_ty = TLS_TLS | TLS_DTPREL;
6040 tls_m &= ~TLS_DTPREL;
6042 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6044 tls_ty = TLS_TLS | TLS_TPREL;
6048 /* Generate relocs for the dynamic linker. */
6049 if ((info->shared || indx != 0)
6051 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6052 || h->root.type != bfd_link_hash_undefweak))
6054 outrel.r_offset = (htab->got->output_section->vma
6055 + htab->got->output_offset
6057 outrel.r_addend = 0;
6058 if (tls_ty & (TLS_LD | TLS_GD))
6060 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6061 if (tls_ty == (TLS_TLS | TLS_GD))
6063 loc = htab->relgot->contents;
6064 loc += (htab->relgot->reloc_count++
6065 * sizeof (Elf32_External_Rela));
6066 bfd_elf32_swap_reloca_out (output_bfd,
6068 outrel.r_offset += 4;
6070 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6073 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6074 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6075 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6076 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6078 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6080 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6083 outrel.r_addend += relocation;
6084 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6085 outrel.r_addend -= htab->elf.tls_sec->vma;
6087 loc = htab->relgot->contents;
6088 loc += (htab->relgot->reloc_count++
6089 * sizeof (Elf32_External_Rela));
6090 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6093 /* Init the .got section contents if we're not
6094 emitting a reloc. */
6097 bfd_vma value = relocation;
6099 if (tls_ty == (TLS_TLS | TLS_LD))
6101 else if (tls_ty != 0)
6103 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6104 if (tls_ty == (TLS_TLS | TLS_TPREL))
6105 value += DTP_OFFSET - TP_OFFSET;
6107 if (tls_ty == (TLS_TLS | TLS_GD))
6109 bfd_put_32 (output_bfd, value,
6110 htab->got->contents + off + 4);
6114 bfd_put_32 (output_bfd, value,
6115 htab->got->contents + off);
6119 if (tls_ty & (TLS_LD | TLS_GD))
6128 if (off >= (bfd_vma) -2)
6131 if ((tls_type & TLS_TLS) != 0)
6133 if (tls_type != (TLS_TLS | TLS_LD))
6135 if ((tls_mask & TLS_LD) != 0
6137 || !h->def_dynamic))
6139 if (tls_type != (TLS_TLS | TLS_GD))
6141 if ((tls_mask & TLS_GD) != 0)
6143 if (tls_type != (TLS_TLS | TLS_DTPREL))
6145 if ((tls_mask & TLS_DTPREL) != 0)
6152 relocation = htab->got->output_offset + off;
6153 relocation -= htab->elf.hgot->root.u.def.value;
6155 /* Addends on got relocations don't make much sense.
6156 x+off@got is actually x@got+off, and since the got is
6157 generated by a hash table traversal, the value in the
6158 got at entry m+n bears little relation to the entry m. */
6160 (*_bfd_error_handler)
6161 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6164 (long) rel->r_offset,
6170 /* Relocations that need no special processing. */
6171 case R_PPC_LOCAL24PC:
6172 /* It makes no sense to point a local relocation
6173 at a symbol not in this object. */
6174 if (unresolved_reloc)
6176 if (! (*info->callbacks->undefined_symbol) (info,
6177 h->root.root.string,
6187 case R_PPC_DTPREL16:
6188 case R_PPC_DTPREL16_LO:
6189 case R_PPC_DTPREL16_HI:
6190 case R_PPC_DTPREL16_HA:
6191 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6194 /* Relocations that may need to be propagated if this is a shared
6197 case R_PPC_TPREL16_LO:
6198 case R_PPC_TPREL16_HI:
6199 case R_PPC_TPREL16_HA:
6200 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6201 /* The TPREL16 relocs shouldn't really be used in shared
6202 libs as they will result in DT_TEXTREL being set, but
6203 support them anyway. */
6207 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6210 case R_PPC_DTPREL32:
6211 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6214 case R_PPC_DTPMOD32:
6220 case R_PPC_REL16_LO:
6221 case R_PPC_REL16_HI:
6222 case R_PPC_REL16_HA:
6228 case R_PPC_REL14_BRTAKEN:
6229 case R_PPC_REL14_BRNTAKEN:
6230 /* If these relocations are not to a named symbol, they can be
6231 handled right here, no need to bother the dynamic linker. */
6232 if (SYMBOL_REFERENCES_LOCAL (info, h)
6233 || h == htab->elf.hgot)
6237 /* Relocations that always need to be propagated if this is a shared
6242 case R_PPC_ADDR16_LO:
6243 case R_PPC_ADDR16_HI:
6244 case R_PPC_ADDR16_HA:
6246 case R_PPC_ADDR14_BRTAKEN:
6247 case R_PPC_ADDR14_BRNTAKEN:
6251 if ((input_section->flags & SEC_ALLOC) == 0)
6257 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6258 || h->root.type != bfd_link_hash_undefweak)
6259 && (MUST_BE_DYN_RELOC (r_type)
6260 || !SYMBOL_CALLS_LOCAL (info, h)))
6261 || (ELIMINATE_COPY_RELOCS
6267 && !h->def_regular))
6272 fprintf (stderr, "ppc_elf_relocate_section needs to "
6273 "create relocation for %s\n",
6274 (h && h->root.root.string
6275 ? h->root.root.string : "<unknown>"));
6278 /* When generating a shared object, these relocations
6279 are copied into the output file to be resolved at run
6285 name = (bfd_elf_string_from_elf_section
6287 elf_elfheader (input_bfd)->e_shstrndx,
6288 elf_section_data (input_section)->rel_hdr.sh_name));
6292 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
6293 && strcmp (bfd_get_section_name (input_bfd,
6297 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
6298 BFD_ASSERT (sreloc != NULL);
6304 _bfd_elf_section_offset (output_bfd, info, input_section,
6306 if (outrel.r_offset == (bfd_vma) -1
6307 || outrel.r_offset == (bfd_vma) -2)
6308 skip = (int) outrel.r_offset;
6309 outrel.r_offset += (input_section->output_section->vma
6310 + input_section->output_offset);
6313 memset (&outrel, 0, sizeof outrel);
6314 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6316 unresolved_reloc = FALSE;
6317 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6318 outrel.r_addend = rel->r_addend;
6322 outrel.r_addend = relocation + rel->r_addend;
6324 if (r_type == R_PPC_ADDR32)
6325 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6330 if (bfd_is_abs_section (sec))
6332 else if (sec == NULL || sec->owner == NULL)
6334 bfd_set_error (bfd_error_bad_value);
6341 /* We are turning this relocation into one
6342 against a section symbol. It would be
6343 proper to subtract the symbol's value,
6344 osec->vma, from the emitted reloc addend,
6345 but ld.so expects buggy relocs. */
6346 osec = sec->output_section;
6347 indx = elf_section_data (osec)->dynindx;
6350 osec = htab->elf.text_index_section;
6351 indx = elf_section_data (osec)->dynindx;
6353 BFD_ASSERT (indx != 0);
6356 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6357 indx, osec->name, osec->flags,
6358 h->root.root.string);
6362 outrel.r_info = ELF32_R_INFO (indx, r_type);
6366 loc = sreloc->contents;
6367 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6368 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6373 /* This reloc will be computed at runtime. We clear the memory
6374 so that it contains predictable value. */
6376 && ((input_section->flags & SEC_ALLOC) != 0
6377 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6379 relocation = howto->pc_relative ? outrel.r_offset : 0;
6386 case R_PPC_RELAX32PC_PLT:
6387 case R_PPC_RELAX32_PLT:
6389 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6391 if (htab->plt_type == PLT_NEW)
6392 relocation = (htab->glink->output_section->vma
6393 + htab->glink->output_offset
6394 + ent->glink_offset);
6396 relocation = (htab->plt->output_section->vma
6397 + htab->plt->output_offset
6401 if (r_type == R_PPC_RELAX32_PLT)
6405 case R_PPC_RELAX32PC:
6406 relocation -= (input_section->output_section->vma
6407 + input_section->output_offset
6408 + rel->r_offset - 4);
6417 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6418 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6420 /* We're clearing the bits for R_PPC_ADDR16_HA
6421 and R_PPC_ADDR16_LO here. */
6425 /* t0 is HA, t1 is LO */
6426 relocation += addend;
6427 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6428 t1 |= relocation & 0xffff;
6430 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6431 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6435 /* Indirect .sdata relocation. */
6436 case R_PPC_EMB_SDAI16:
6437 BFD_ASSERT (htab->sdata[0].section != NULL);
6439 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6440 h, relocation, rel);
6443 /* Indirect .sdata2 relocation. */
6444 case R_PPC_EMB_SDA2I16:
6445 BFD_ASSERT (htab->sdata[1].section != NULL);
6447 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6448 h, relocation, rel);
6451 /* Handle the TOC16 reloc. We want to use the offset within the .got
6452 section, not the actual VMA. This is appropriate when generating
6453 an embedded ELF object, for which the .got section acts like the
6454 AIX .toc section. */
6455 case R_PPC_TOC16: /* phony GOT16 relocations */
6456 BFD_ASSERT (sec != NULL);
6457 BFD_ASSERT (bfd_is_und_section (sec)
6458 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6459 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6461 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6464 case R_PPC_PLTREL24:
6465 /* Relocation is to the entry for this symbol in the
6466 procedure linkage table. */
6468 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6472 || htab->plt == NULL)
6474 /* We didn't make a PLT entry for this symbol. This
6475 happens when statically linking PIC code, or when
6476 using -Bsymbolic. */
6480 unresolved_reloc = FALSE;
6481 if (htab->plt_type == PLT_NEW)
6482 relocation = (htab->glink->output_section->vma
6483 + htab->glink->output_offset
6484 + ent->glink_offset);
6486 relocation = (htab->plt->output_section->vma
6487 + htab->plt->output_offset
6492 /* Relocate against _SDA_BASE_. */
6493 case R_PPC_SDAREL16:
6496 struct elf_link_hash_entry *sh;
6498 BFD_ASSERT (sec != NULL);
6499 name = bfd_get_section_name (abfd, sec->output_section);
6500 if (! ((CONST_STRNEQ (name, ".sdata")
6501 && (name[6] == 0 || name[6] == '.'))
6502 || (CONST_STRNEQ (name, ".sbss")
6503 && (name[5] == 0 || name[5] == '.'))))
6505 (*_bfd_error_handler)
6506 (_("%B: the target (%s) of a %s relocation is "
6507 "in the wrong output section (%s)"),
6513 sh = htab->sdata[0].sym;
6514 addend -= (sh->root.u.def.value
6515 + sh->root.u.def.section->output_offset
6516 + sh->root.u.def.section->output_section->vma);
6520 /* Relocate against _SDA2_BASE_. */
6521 case R_PPC_EMB_SDA2REL:
6524 struct elf_link_hash_entry *sh;
6526 BFD_ASSERT (sec != NULL);
6527 name = bfd_get_section_name (abfd, sec->output_section);
6528 if (! (CONST_STRNEQ (name, ".sdata2")
6529 || CONST_STRNEQ (name, ".sbss2")))
6531 (*_bfd_error_handler)
6532 (_("%B: the target (%s) of a %s relocation is "
6533 "in the wrong output section (%s)"),
6539 bfd_set_error (bfd_error_bad_value);
6543 sh = htab->sdata[1].sym;
6544 addend -= (sh->root.u.def.value
6545 + sh->root.u.def.section->output_offset
6546 + sh->root.u.def.section->output_section->vma);
6550 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6551 case R_PPC_EMB_SDA21:
6552 case R_PPC_EMB_RELSDA:
6556 struct elf_link_hash_entry *sh;
6558 BFD_ASSERT (sec != NULL);
6559 name = bfd_get_section_name (abfd, sec->output_section);
6560 if (((CONST_STRNEQ (name, ".sdata")
6561 && (name[6] == 0 || name[6] == '.'))
6562 || (CONST_STRNEQ (name, ".sbss")
6563 && (name[5] == 0 || name[5] == '.'))))
6566 sh = htab->sdata[0].sym;
6567 addend -= (sh->root.u.def.value
6568 + sh->root.u.def.section->output_offset
6569 + sh->root.u.def.section->output_section->vma);
6572 else if (CONST_STRNEQ (name, ".sdata2")
6573 || CONST_STRNEQ (name, ".sbss2"))
6576 sh = htab->sdata[1].sym;
6577 addend -= (sh->root.u.def.value
6578 + sh->root.u.def.section->output_offset
6579 + sh->root.u.def.section->output_section->vma);
6582 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6583 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6590 (*_bfd_error_handler)
6591 (_("%B: the target (%s) of a %s relocation is "
6592 "in the wrong output section (%s)"),
6598 bfd_set_error (bfd_error_bad_value);
6603 if (r_type == R_PPC_EMB_SDA21)
6604 { /* fill in register field */
6605 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6606 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6607 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6612 /* Relocate against the beginning of the section. */
6614 case R_PPC_SECTOFF_LO:
6615 case R_PPC_SECTOFF_HI:
6616 case R_PPC_SECTOFF_HA:
6617 BFD_ASSERT (sec != NULL);
6618 addend -= sec->output_section->vma;
6621 /* Negative relocations. */
6622 case R_PPC_EMB_NADDR32:
6623 case R_PPC_EMB_NADDR16:
6624 case R_PPC_EMB_NADDR16_LO:
6625 case R_PPC_EMB_NADDR16_HI:
6626 case R_PPC_EMB_NADDR16_HA:
6627 addend -= 2 * relocation;
6631 case R_PPC_GLOB_DAT:
6632 case R_PPC_JMP_SLOT:
6633 case R_PPC_RELATIVE:
6635 case R_PPC_PLTREL32:
6636 case R_PPC_PLT16_LO:
6637 case R_PPC_PLT16_HI:
6638 case R_PPC_PLT16_HA:
6640 case R_PPC_EMB_RELSEC16:
6641 case R_PPC_EMB_RELST_LO:
6642 case R_PPC_EMB_RELST_HI:
6643 case R_PPC_EMB_RELST_HA:
6644 case R_PPC_EMB_BIT_FLD:
6645 (*_bfd_error_handler)
6646 (_("%B: relocation %s is not yet supported for symbol %s."),
6651 bfd_set_error (bfd_error_invalid_operation);
6656 /* Do any further special processing. */
6662 case R_PPC_ADDR16_HA:
6663 case R_PPC_REL16_HA:
6664 case R_PPC_SECTOFF_HA:
6665 case R_PPC_TPREL16_HA:
6666 case R_PPC_DTPREL16_HA:
6667 case R_PPC_EMB_NADDR16_HA:
6668 case R_PPC_EMB_RELST_HA:
6669 /* It's just possible that this symbol is a weak symbol
6670 that's not actually defined anywhere. In that case,
6671 'sec' would be NULL, and we should leave the symbol
6672 alone (it will be set to zero elsewhere in the link). */
6677 case R_PPC_PLT16_HA:
6678 case R_PPC_GOT16_HA:
6679 case R_PPC_GOT_TLSGD16_HA:
6680 case R_PPC_GOT_TLSLD16_HA:
6681 case R_PPC_GOT_TPREL16_HA:
6682 case R_PPC_GOT_DTPREL16_HA:
6683 /* Add 0x10000 if sign bit in 0:15 is set.
6684 Bits 0:15 are not used. */
6690 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6691 "offset = %ld, addend = %ld\n",
6696 (long) rel->r_offset,
6700 if (unresolved_reloc
6701 && !((input_section->flags & SEC_DEBUGGING) != 0
6704 (*_bfd_error_handler)
6705 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6708 (long) rel->r_offset,
6714 r = _bfd_final_link_relocate (howto,
6722 if (r != bfd_reloc_ok)
6724 if (r == bfd_reloc_overflow)
6729 && h->root.type == bfd_link_hash_undefweak
6730 && howto->pc_relative)
6732 /* Assume this is a call protected by other code that
6733 detect the symbol is undefined. If this is the case,
6734 we can safely ignore the overflow. If not, the
6735 program is hosed anyway, and a little warning isn't
6741 if (! (*info->callbacks->reloc_overflow) (info,
6742 (h ? &h->root : NULL),
6753 (*_bfd_error_handler)
6754 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6755 input_bfd, input_section,
6756 (long) rel->r_offset, howto->name, sym_name, (int) r);
6763 fprintf (stderr, "\n");
6769 #define PPC_LO(v) ((v) & 0xffff)
6770 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6771 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6773 /* Finish up dynamic symbol handling. We set the contents of various
6774 dynamic sections here. */
6777 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6778 struct bfd_link_info *info,
6779 struct elf_link_hash_entry *h,
6780 Elf_Internal_Sym *sym)
6782 struct ppc_elf_link_hash_table *htab;
6783 struct plt_entry *ent;
6784 bfd_boolean doneone;
6787 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6788 h->root.root.string);
6791 htab = ppc_elf_hash_table (info);
6792 BFD_ASSERT (htab->elf.dynobj != NULL);
6795 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6796 if (ent->plt.offset != (bfd_vma) -1)
6800 Elf_Internal_Rela rela;
6802 bfd_vma reloc_index;
6804 if (htab->plt_type == PLT_NEW)
6805 reloc_index = ent->plt.offset / 4;
6808 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6809 / htab->plt_slot_size);
6810 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6811 && htab->plt_type == PLT_OLD)
6812 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6815 /* This symbol has an entry in the procedure linkage table.
6817 if (htab->plt_type == PLT_VXWORKS)
6820 const bfd_vma *plt_entry;
6822 /* The first three entries in .got.plt are reserved. */
6823 got_offset = (reloc_index + 3) * 4;
6825 /* Use the right PLT. */
6826 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6827 : ppc_elf_vxworks_plt_entry;
6829 /* Fill in the .plt on VxWorks. */
6832 bfd_vma got_offset_hi = (got_offset >> 16)
6833 + ((got_offset & 0x8000) >> 15);
6835 bfd_put_32 (output_bfd,
6836 plt_entry[0] | (got_offset_hi & 0xffff),
6837 htab->plt->contents + ent->plt.offset + 0);
6838 bfd_put_32 (output_bfd,
6839 plt_entry[1] | (got_offset & 0xffff),
6840 htab->plt->contents + ent->plt.offset + 4);
6846 + htab->elf.hgot->root.u.def.value
6847 + htab->elf.hgot->root.u.def.section->output_offset
6848 + htab->elf.hgot->root.u.def.section->output_section->vma);
6849 bfd_vma got_loc_hi = (got_loc >> 16)
6850 + ((got_loc & 0x8000) >> 15);
6852 bfd_put_32 (output_bfd,
6853 plt_entry[0] | (got_loc_hi & 0xffff),
6854 htab->plt->contents + ent->plt.offset + 0);
6855 bfd_put_32 (output_bfd,
6856 plt_entry[1] | (got_loc & 0xffff),
6857 htab->plt->contents + ent->plt.offset + 4);
6860 bfd_put_32 (output_bfd, plt_entry[2],
6861 htab->plt->contents + ent->plt.offset + 8);
6862 bfd_put_32 (output_bfd, plt_entry[3],
6863 htab->plt->contents + ent->plt.offset + 12);
6865 /* This instruction is an immediate load. The value loaded is
6866 the byte offset of the R_PPC_JMP_SLOT relocation from the
6867 start of the .rela.plt section. The value is stored in the
6868 low-order 16 bits of the load instruction. */
6869 /* NOTE: It appears that this is now an index rather than a
6870 prescaled offset. */
6871 bfd_put_32 (output_bfd,
6872 plt_entry[4] | reloc_index,
6873 htab->plt->contents + ent->plt.offset + 16);
6874 /* This instruction is a PC-relative branch whose target is
6875 the start of the PLT section. The address of this branch
6876 instruction is 20 bytes beyond the start of this PLT entry.
6877 The address is encoded in bits 6-29, inclusive. The value
6878 stored is right-shifted by two bits, permitting a 26-bit
6880 bfd_put_32 (output_bfd,
6882 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6883 htab->plt->contents + ent->plt.offset + 20);
6884 bfd_put_32 (output_bfd, plt_entry[6],
6885 htab->plt->contents + ent->plt.offset + 24);
6886 bfd_put_32 (output_bfd, plt_entry[7],
6887 htab->plt->contents + ent->plt.offset + 28);
6889 /* Fill in the GOT entry corresponding to this PLT slot with
6890 the address immediately after the the "bctr" instruction
6891 in this PLT entry. */
6892 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6893 + htab->plt->output_offset
6894 + ent->plt.offset + 16),
6895 htab->sgotplt->contents + got_offset);
6899 /* Fill in a couple of entries in .rela.plt.unloaded. */
6900 loc = htab->srelplt2->contents
6901 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6902 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6903 * sizeof (Elf32_External_Rela));
6905 /* Provide the @ha relocation for the first instruction. */
6906 rela.r_offset = (htab->plt->output_section->vma
6907 + htab->plt->output_offset
6908 + ent->plt.offset + 2);
6909 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6911 rela.r_addend = got_offset;
6912 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6913 loc += sizeof (Elf32_External_Rela);
6915 /* Provide the @l relocation for the second instruction. */
6916 rela.r_offset = (htab->plt->output_section->vma
6917 + htab->plt->output_offset
6918 + ent->plt.offset + 6);
6919 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
6921 rela.r_addend = got_offset;
6922 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6923 loc += sizeof (Elf32_External_Rela);
6925 /* Provide a relocation for the GOT entry corresponding to this
6926 PLT slot. Point it at the middle of the .plt entry. */
6927 rela.r_offset = (htab->sgotplt->output_section->vma
6928 + htab->sgotplt->output_offset
6930 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
6932 rela.r_addend = ent->plt.offset + 16;
6933 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6936 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6937 In particular, the offset for the relocation is not the
6938 address of the PLT entry for this function, as specified
6939 by the ABI. Instead, the offset is set to the address of
6940 the GOT slot for this function. See EABI 4.4.4.1. */
6941 rela.r_offset = (htab->sgotplt->output_section->vma
6942 + htab->sgotplt->output_offset
6948 rela.r_offset = (htab->plt->output_section->vma
6949 + htab->plt->output_offset
6951 if (htab->plt_type == PLT_OLD)
6953 /* We don't need to fill in the .plt. The ppc dynamic
6954 linker will fill it in. */
6958 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6959 + htab->glink->output_section->vma
6960 + htab->glink->output_offset);
6961 bfd_put_32 (output_bfd, val,
6962 htab->plt->contents + ent->plt.offset);
6966 /* Fill in the entry in the .rela.plt section. */
6967 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6970 loc = (htab->relplt->contents
6971 + reloc_index * sizeof (Elf32_External_Rela));
6972 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6974 if (!h->def_regular)
6976 /* Mark the symbol as undefined, rather than as defined in
6977 the .plt section. Leave the value alone. */
6978 sym->st_shndx = SHN_UNDEF;
6979 /* If the symbol is weak, we do need to clear the value.
6980 Otherwise, the PLT entry would provide a definition for
6981 the symbol even if the symbol wasn't defined anywhere,
6982 and so the symbol would never be NULL. */
6983 if (!h->ref_regular_nonweak)
6989 if (htab->plt_type == PLT_NEW)
6994 plt = (ent->plt.offset
6995 + htab->plt->output_section->vma
6996 + htab->plt->output_offset);
6997 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6999 if (info->shared || info->pie)
7003 if (ent->addend >= 32768)
7005 + ent->sec->output_section->vma
7006 + ent->sec->output_offset);
7007 else if (htab->elf.hgot != NULL)
7008 got = (htab->elf.hgot->root.u.def.value
7009 + htab->elf.hgot->root.u.def.section->output_section->vma
7010 + htab->elf.hgot->root.u.def.section->output_offset);
7014 if (plt + 0x8000 < 0x10000)
7016 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7018 bfd_put_32 (output_bfd, MTCTR_11, p);
7020 bfd_put_32 (output_bfd, BCTR, p);
7022 bfd_put_32 (output_bfd, NOP, p);
7027 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7029 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7031 bfd_put_32 (output_bfd, MTCTR_11, p);
7033 bfd_put_32 (output_bfd, BCTR, p);
7039 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7041 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7043 bfd_put_32 (output_bfd, MTCTR_11, p);
7045 bfd_put_32 (output_bfd, BCTR, p);
7048 /* We only need one non-PIC glink stub. */
7059 Elf_Internal_Rela rela;
7062 /* This symbols needs a copy reloc. Set it up. */
7065 fprintf (stderr, ", copy");
7068 BFD_ASSERT (h->dynindx != -1);
7070 if (ppc_elf_hash_entry (h)->has_sda_refs)
7074 BFD_ASSERT (s != NULL);
7076 rela.r_offset = (h->root.u.def.value
7077 + h->root.u.def.section->output_section->vma
7078 + h->root.u.def.section->output_offset);
7079 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7081 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7082 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7086 fprintf (stderr, "\n");
7089 /* Mark some specially defined symbols as absolute. */
7090 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7091 || (!htab->is_vxworks
7092 && (h == htab->elf.hgot
7093 || strcmp (h->root.root.string,
7094 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7095 sym->st_shndx = SHN_ABS;
7100 static enum elf_reloc_type_class
7101 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7103 switch (ELF32_R_TYPE (rela->r_info))
7105 case R_PPC_RELATIVE:
7106 return reloc_class_relative;
7109 case R_PPC_JMP_SLOT:
7110 return reloc_class_plt;
7112 return reloc_class_copy;
7114 return reloc_class_normal;
7118 /* Finish up the dynamic sections. */
7121 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7122 struct bfd_link_info *info)
7126 struct ppc_elf_link_hash_table *htab;
7131 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7134 htab = ppc_elf_hash_table (info);
7135 dynobj = elf_hash_table (info)->dynobj;
7136 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7137 if (htab->is_vxworks)
7138 splt = bfd_get_section_by_name (dynobj, ".plt");
7143 if (htab->elf.hgot != NULL)
7144 got = (htab->elf.hgot->root.u.def.value
7145 + htab->elf.hgot->root.u.def.section->output_section->vma
7146 + htab->elf.hgot->root.u.def.section->output_offset);
7148 if (htab->elf.dynamic_sections_created)
7150 Elf32_External_Dyn *dyncon, *dynconend;
7152 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7154 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7155 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7156 for (; dyncon < dynconend; dyncon++)
7158 Elf_Internal_Dyn dyn;
7161 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7166 if (htab->is_vxworks)
7170 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7174 dyn.d_un.d_val = htab->relplt->size;
7179 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7183 dyn.d_un.d_ptr = got;
7187 if (htab->is_vxworks)
7190 dyn.d_un.d_ptr -= htab->relplt->size;
7199 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7203 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7204 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7205 if (htab->got != NULL)
7207 unsigned char *p = htab->got->contents;
7210 p += htab->elf.hgot->root.u.def.value;
7211 if (htab->plt_type == PLT_OLD)
7212 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
7216 val = sdyn->output_section->vma + sdyn->output_offset;
7217 bfd_put_32 (output_bfd, val, p);
7219 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7222 /* Fill in the first entry in the VxWorks procedure linkage table. */
7223 if (splt && splt->size > 0)
7225 /* Use the right PLT. */
7226 static const bfd_vma *plt_entry = NULL;
7227 plt_entry = info->shared ?
7228 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7233 (htab->elf.hgot->root.u.def.section->output_section->vma
7234 + htab->elf.hgot->root.u.def.section->output_offset
7235 + htab->elf.hgot->root.u.def.value);
7236 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7238 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7239 splt->contents + 0);
7240 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7241 splt->contents + 4);
7245 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7246 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7248 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7249 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7250 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7251 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7252 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7253 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7257 Elf_Internal_Rela rela;
7260 loc = htab->srelplt2->contents;
7262 /* Output the @ha relocation for the first instruction. */
7263 rela.r_offset = (htab->plt->output_section->vma
7264 + htab->plt->output_offset
7266 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7268 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7269 loc += sizeof (Elf32_External_Rela);
7271 /* Output the @l relocation for the second instruction. */
7272 rela.r_offset = (htab->plt->output_section->vma
7273 + htab->plt->output_offset
7275 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7277 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7278 loc += sizeof (Elf32_External_Rela);
7280 /* Fix up the remaining relocations. They may have the wrong
7281 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7282 in which symbols were output. */
7283 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7285 Elf_Internal_Rela rel;
7287 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7288 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7289 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7290 loc += sizeof (Elf32_External_Rela);
7292 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7293 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7294 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7295 loc += sizeof (Elf32_External_Rela);
7297 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7298 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7299 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7300 loc += sizeof (Elf32_External_Rela);
7305 if (htab->glink != NULL && htab->glink->contents != NULL)
7308 unsigned char *endp;
7313 * PIC glink code is the following:
7315 * # ith PLT code stub.
7316 * addis 11,30,(plt+(i-1)*4-got)@ha
7317 * lwz 11,(plt+(i-1)*4-got)@l(11)
7321 * # A table of branches, one for each plt entry.
7322 * # The idea is that the plt call stub loads ctr (and r11) with these
7323 * # addresses, so (r11 - res_0) gives the plt index * 4.
7324 * res_0: b PLTresolve
7325 * res_1: b PLTresolve
7327 * # Some number of entries towards the end can be nops
7333 * addis 11,11,(1f-res_0)@ha
7336 * 1: addi 11,11,(1b-res_0)@l
7339 * sub 11,11,12 # r11 = index * 4
7340 * addis 12,12,(got+4-1b)@ha
7341 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7342 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7345 * add 11,0,11 # r11 = index * 12 = reloc offset.
7348 static const unsigned int pic_plt_resolve[] =
7368 static const unsigned int plt_resolve[] =
7388 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7390 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7393 /* Build the branch table, one for each plt entry (less one),
7394 and perhaps some padding. */
7395 p = htab->glink->contents;
7396 p += htab->glink_pltresolve;
7397 endp = htab->glink->contents;
7398 endp += htab->glink->size - GLINK_PLTRESOLVE;
7399 while (p < endp - 8 * 4)
7401 bfd_put_32 (output_bfd, B + endp - p, p);
7406 bfd_put_32 (output_bfd, NOP, p);
7410 res0 = (htab->glink_pltresolve
7411 + htab->glink->output_section->vma
7412 + htab->glink->output_offset);
7414 /* Last comes the PLTresolve stub. */
7415 if (info->shared || info->pie)
7419 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7421 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7424 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7426 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7427 + htab->glink->output_section->vma
7428 + htab->glink->output_offset);
7430 bfd_put_32 (output_bfd,
7431 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7432 bfd_put_32 (output_bfd,
7433 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7434 bfd_put_32 (output_bfd,
7435 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7436 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7438 bfd_put_32 (output_bfd,
7439 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7440 bfd_put_32 (output_bfd,
7441 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7445 bfd_put_32 (output_bfd,
7446 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7447 bfd_put_32 (output_bfd,
7448 LWZ_12_12 + 4, p + 9*4);
7453 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7455 bfd_put_32 (output_bfd, plt_resolve[i], p);
7458 p -= 4 * ARRAY_SIZE (plt_resolve);
7460 bfd_put_32 (output_bfd,
7461 LIS_12 + PPC_HA (got + 4), p + 0*4);
7462 bfd_put_32 (output_bfd,
7463 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7464 bfd_put_32 (output_bfd,
7465 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7466 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7468 bfd_put_32 (output_bfd,
7469 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7470 bfd_put_32 (output_bfd,
7471 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7475 bfd_put_32 (output_bfd,
7476 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7477 bfd_put_32 (output_bfd,
7478 LWZ_12_12 + 4, p + 6*4);
7486 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7487 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7488 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7489 #define TARGET_BIG_NAME "elf32-powerpc"
7490 #define ELF_ARCH bfd_arch_powerpc
7491 #define ELF_MACHINE_CODE EM_PPC
7492 #ifdef __QNXTARGET__
7493 #define ELF_MAXPAGESIZE 0x1000
7495 #define ELF_MAXPAGESIZE 0x10000
7497 #define ELF_MINPAGESIZE 0x1000
7498 #define ELF_COMMONPAGESIZE 0x1000
7499 #define elf_info_to_howto ppc_elf_info_to_howto
7501 #ifdef EM_CYGNUS_POWERPC
7502 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7506 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7509 #define elf_backend_plt_not_loaded 1
7510 #define elf_backend_can_gc_sections 1
7511 #define elf_backend_can_refcount 1
7512 #define elf_backend_rela_normal 1
7514 #define bfd_elf32_mkobject ppc_elf_mkobject
7515 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7516 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7517 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7518 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
7519 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7520 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7522 #define elf_backend_object_p ppc_elf_object_p
7523 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7524 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7525 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7526 #define elf_backend_relocate_section ppc_elf_relocate_section
7527 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7528 #define elf_backend_check_relocs ppc_elf_check_relocs
7529 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7530 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7531 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7532 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7533 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7534 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7535 #define elf_backend_fake_sections ppc_elf_fake_sections
7536 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7537 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7538 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7539 #define elf_backend_write_core_note ppc_elf_write_core_note
7540 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7541 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7542 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7543 #define elf_backend_write_section ppc_elf_write_section
7544 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7545 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7546 #define elf_backend_action_discarded ppc_elf_action_discarded
7547 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7549 #include "elf32-target.h"
7551 /* VxWorks Target */
7553 #undef TARGET_LITTLE_SYM
7554 #undef TARGET_LITTLE_NAME
7556 #undef TARGET_BIG_SYM
7557 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7558 #undef TARGET_BIG_NAME
7559 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7561 /* VxWorks uses the elf default section flags for .plt. */
7562 static const struct bfd_elf_special_section *
7563 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7565 if (sec->name == NULL)
7568 if (strcmp (sec->name, ".plt") == 0)
7569 return _bfd_elf_get_sec_type_attr (abfd, sec);
7571 return ppc_elf_get_sec_type_attr (abfd, sec);
7574 /* Like ppc_elf_link_hash_table_create, but overrides
7575 appropriately for VxWorks. */
7576 static struct bfd_link_hash_table *
7577 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7579 struct bfd_link_hash_table *ret;
7581 ret = ppc_elf_link_hash_table_create (abfd);
7584 struct ppc_elf_link_hash_table *htab
7585 = (struct ppc_elf_link_hash_table *)ret;
7586 htab->is_vxworks = 1;
7587 htab->plt_type = PLT_VXWORKS;
7588 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7589 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7590 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7595 /* Tweak magic VxWorks symbols as they are loaded. */
7597 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7598 struct bfd_link_info *info,
7599 Elf_Internal_Sym *sym,
7600 const char **namep ATTRIBUTE_UNUSED,
7601 flagword *flagsp ATTRIBUTE_UNUSED,
7605 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7609 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7613 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7615 ppc_elf_final_write_processing(abfd, linker);
7616 elf_vxworks_final_write_processing(abfd, linker);
7619 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7621 #undef elf_backend_want_plt_sym
7622 #define elf_backend_want_plt_sym 1
7623 #undef elf_backend_want_got_plt
7624 #define elf_backend_want_got_plt 1
7625 #undef elf_backend_got_symbol_offset
7626 #define elf_backend_got_symbol_offset 0
7627 #undef elf_backend_plt_not_loaded
7628 #define elf_backend_plt_not_loaded 0
7629 #undef elf_backend_plt_readonly
7630 #define elf_backend_plt_readonly 1
7631 #undef elf_backend_got_header_size
7632 #define elf_backend_got_header_size 12
7634 #undef bfd_elf32_bfd_link_hash_table_create
7635 #define bfd_elf32_bfd_link_hash_table_create \
7636 ppc_elf_vxworks_link_hash_table_create
7637 #undef elf_backend_add_symbol_hook
7638 #define elf_backend_add_symbol_hook \
7639 ppc_elf_vxworks_add_symbol_hook
7640 #undef elf_backend_link_output_symbol_hook
7641 #define elf_backend_link_output_symbol_hook \
7642 elf_vxworks_link_output_symbol_hook
7643 #undef elf_backend_final_write_processing
7644 #define elf_backend_final_write_processing \
7645 ppc_elf_vxworks_final_write_processing
7646 #undef elf_backend_get_sec_type_attr
7647 #define elf_backend_get_sec_type_attr \
7648 ppc_elf_vxworks_get_sec_type_attr
7649 #undef elf_backend_emit_relocs
7650 #define elf_backend_emit_relocs \
7651 elf_vxworks_emit_relocs
7654 #define elf32_bed ppc_elf_vxworks_bed
7656 #include "elf32-target.h"
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