1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Written by Ian Lance Taylor, Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the
21 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
22 Boston, MA 02110-1301, USA. */
25 /* This file is based on a preliminary PowerPC ELF ABI. The
26 information may not match the final PowerPC ELF ABI. It includes
27 suggestions from the in-progress Embedded PowerPC ABI, and that
28 information may also not match. */
37 #include "elf32-ppc.h"
38 #include "elf-vxworks.h"
40 /* RELA relocations are used here. */
42 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc_elf_unhandled_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 /* Branch prediction bit for branch taken relocs. */
48 #define BRANCH_PREDICT_BIT 0x200000
49 /* Mask to set RA in memory instructions. */
50 #define RA_REGISTER_MASK 0x001f0000
51 /* Value to shift register by to insert RA. */
52 #define RA_REGISTER_SHIFT 16
54 /* The name of the dynamic interpreter. This is put in the .interp
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
58 /* For old-style PLT. */
59 /* The number of single-slot PLT entries (the rest use two slots). */
60 #define PLT_NUM_SINGLE_ENTRIES 8192
62 /* For new-style .glink and .plt. */
63 #define GLINK_PLTRESOLVE 16*4
64 #define GLINK_ENTRY_SIZE 4*4
65 #define TLS_GET_ADDR_GLINK_SIZE 12*4
67 /* VxWorks uses its own plt layout, filled in by the static linker. */
69 /* The standard VxWorks PLT entry. */
70 #define VXWORKS_PLT_ENTRY_SIZE 32
71 static const bfd_vma ppc_elf_vxworks_plt_entry
72 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
74 0x3d800000, /* lis r12,0 */
75 0x818c0000, /* lwz r12,0(r12) */
76 0x7d8903a6, /* mtctr r12 */
77 0x4e800420, /* bctr */
78 0x39600000, /* li r11,0 */
79 0x48000000, /* b 14 <.PLT0resolve+0x4> */
83 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
86 0x3d9e0000, /* addis r12,r30,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
96 /* The initial VxWorks PLT entry. */
97 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
98 static const bfd_vma ppc_elf_vxworks_plt0_entry
99 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
101 0x3d800000, /* lis r12,0 */
102 0x398c0000, /* addi r12,r12,0 */
103 0x800c0008, /* lwz r0,8(r12) */
104 0x7c0903a6, /* mtctr r0 */
105 0x818c0004, /* lwz r12,4(r12) */
106 0x4e800420, /* bctr */
107 0x60000000, /* nop */
108 0x60000000, /* nop */
110 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
113 0x819e0008, /* lwz r12,8(r30) */
114 0x7d8903a6, /* mtctr r12 */
115 0x819e0004, /* lwz r12,4(r30) */
116 0x4e800420, /* bctr */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
123 /* For executables, we have some additional relocations in
124 .rela.plt.unloaded, for the kernel loader. */
126 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
127 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
128 /* The number of relocations in the PLTResolve slot. */
129 #define VXWORKS_PLTRESOLVE_RELOCS 2
130 /* The number of relocations in the PLTResolve slot when when creating
132 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
134 /* Some instructions. */
135 #define ADDIS_11_11 0x3d6b0000
136 #define ADDIS_11_30 0x3d7e0000
137 #define ADDIS_12_12 0x3d8c0000
138 #define ADDI_11_11 0x396b0000
139 #define ADD_0_11_11 0x7c0b5a14
140 #define ADD_3_12_2 0x7c6c1214
141 #define ADD_11_0_11 0x7d605a14
143 #define BCL_20_31 0x429f0005
144 #define BCTR 0x4e800420
145 #define BEQLR 0x4d820020
146 #define CMPWI_11_0 0x2c0b0000
147 #define LIS_11 0x3d600000
148 #define LIS_12 0x3d800000
149 #define LWZU_0_12 0x840c0000
150 #define LWZ_0_12 0x800c0000
151 #define LWZ_11_3 0x81630000
152 #define LWZ_11_11 0x816b0000
153 #define LWZ_11_30 0x817e0000
154 #define LWZ_12_3 0x81830000
155 #define LWZ_12_12 0x818c0000
156 #define MR_0_3 0x7c601b78
157 #define MR_3_0 0x7c030378
158 #define MFLR_0 0x7c0802a6
159 #define MFLR_12 0x7d8802a6
160 #define MTCTR_0 0x7c0903a6
161 #define MTCTR_11 0x7d6903a6
162 #define MTLR_0 0x7c0803a6
163 #define NOP 0x60000000
164 #define SUB_11_11_12 0x7d6c5850
166 /* Offset of tp and dtp pointers from start of TLS block. */
167 #define TP_OFFSET 0x7000
168 #define DTP_OFFSET 0x8000
170 /* The value of a defined global symbol. */
171 #define SYM_VAL(SYM) \
172 ((SYM)->root.u.def.section->output_section->vma \
173 + (SYM)->root.u.def.section->output_offset \
174 + (SYM)->root.u.def.value)
176 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
178 static reloc_howto_type ppc_elf_howto_raw
[] = {
179 /* This reloc does nothing. */
180 HOWTO (R_PPC_NONE
, /* type */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
184 FALSE
, /* pc_relative */
186 complain_overflow_bitfield
, /* complain_on_overflow */
187 bfd_elf_generic_reloc
, /* special_function */
188 "R_PPC_NONE", /* name */
189 FALSE
, /* partial_inplace */
192 FALSE
), /* pcrel_offset */
194 /* A standard 32 bit relocation. */
195 HOWTO (R_PPC_ADDR32
, /* 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_ADDR32", /* name */
204 FALSE
, /* partial_inplace */
206 0xffffffff, /* dst_mask */
207 FALSE
), /* pcrel_offset */
209 /* An absolute 26 bit branch; the lower two bits must be zero.
210 FIXME: we don't check that, we just clear them. */
211 HOWTO (R_PPC_ADDR24
, /* type */
213 2, /* size (0 = byte, 1 = short, 2 = long) */
215 FALSE
, /* pc_relative */
217 complain_overflow_bitfield
, /* complain_on_overflow */
218 bfd_elf_generic_reloc
, /* special_function */
219 "R_PPC_ADDR24", /* name */
220 FALSE
, /* partial_inplace */
222 0x3fffffc, /* dst_mask */
223 FALSE
), /* pcrel_offset */
225 /* A standard 16 bit relocation. */
226 HOWTO (R_PPC_ADDR16
, /* type */
228 1, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE
, /* pc_relative */
232 complain_overflow_bitfield
, /* complain_on_overflow */
233 bfd_elf_generic_reloc
, /* special_function */
234 "R_PPC_ADDR16", /* name */
235 FALSE
, /* partial_inplace */
237 0xffff, /* dst_mask */
238 FALSE
), /* pcrel_offset */
240 /* A 16 bit relocation without overflow. */
241 HOWTO (R_PPC_ADDR16_LO
, /* type */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE
, /* pc_relative */
247 complain_overflow_dont
,/* complain_on_overflow */
248 bfd_elf_generic_reloc
, /* special_function */
249 "R_PPC_ADDR16_LO", /* name */
250 FALSE
, /* partial_inplace */
252 0xffff, /* dst_mask */
253 FALSE
), /* pcrel_offset */
255 /* The high order 16 bits of an address. */
256 HOWTO (R_PPC_ADDR16_HI
, /* type */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE
, /* pc_relative */
262 complain_overflow_dont
, /* complain_on_overflow */
263 bfd_elf_generic_reloc
, /* special_function */
264 "R_PPC_ADDR16_HI", /* name */
265 FALSE
, /* partial_inplace */
267 0xffff, /* dst_mask */
268 FALSE
), /* pcrel_offset */
270 /* The high order 16 bits of an address, plus 1 if the contents of
271 the low 16 bits, treated as a signed number, is negative. */
272 HOWTO (R_PPC_ADDR16_HA
, /* type */
274 1, /* size (0 = byte, 1 = short, 2 = long) */
276 FALSE
, /* pc_relative */
278 complain_overflow_dont
, /* complain_on_overflow */
279 ppc_elf_addr16_ha_reloc
, /* special_function */
280 "R_PPC_ADDR16_HA", /* name */
281 FALSE
, /* partial_inplace */
283 0xffff, /* dst_mask */
284 FALSE
), /* pcrel_offset */
286 /* An absolute 16 bit branch; the lower two bits must be zero.
287 FIXME: we don't check that, we just clear them. */
288 HOWTO (R_PPC_ADDR14
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE
, /* pc_relative */
294 complain_overflow_bitfield
, /* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_PPC_ADDR14", /* name */
297 FALSE
, /* partial_inplace */
299 0xfffc, /* dst_mask */
300 FALSE
), /* pcrel_offset */
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is expected to be taken. The lower two
304 bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_bitfield
, /* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_PPC_ADDR14_BRTAKEN",/* name */
314 FALSE
, /* partial_inplace */
316 0xfffc, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* An absolute 16 bit branch, for which bit 10 should be set to
320 indicate that the branch is not expected to be taken. The lower
321 two bits must be zero. */
322 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_bitfield
, /* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_PPC_ADDR14_BRNTAKEN",/* name */
331 FALSE
, /* partial_inplace */
333 0xfffc, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 /* A relative 26 bit branch; the lower two bits must be zero. */
337 HOWTO (R_PPC_REL24
, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 TRUE
, /* pc_relative */
343 complain_overflow_signed
, /* complain_on_overflow */
344 bfd_elf_generic_reloc
, /* special_function */
345 "R_PPC_REL24", /* name */
346 FALSE
, /* partial_inplace */
348 0x3fffffc, /* dst_mask */
349 TRUE
), /* pcrel_offset */
351 /* A relative 16 bit branch; the lower two bits must be zero. */
352 HOWTO (R_PPC_REL14
, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 TRUE
, /* pc_relative */
358 complain_overflow_signed
, /* complain_on_overflow */
359 bfd_elf_generic_reloc
, /* special_function */
360 "R_PPC_REL14", /* name */
361 FALSE
, /* partial_inplace */
363 0xfffc, /* dst_mask */
364 TRUE
), /* pcrel_offset */
366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
367 the branch is expected to be taken. The lower two bits must be
369 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE
, /* pc_relative */
375 complain_overflow_signed
, /* complain_on_overflow */
376 bfd_elf_generic_reloc
, /* special_function */
377 "R_PPC_REL14_BRTAKEN", /* name */
378 FALSE
, /* partial_inplace */
380 0xfffc, /* dst_mask */
381 TRUE
), /* pcrel_offset */
383 /* A relative 16 bit branch. Bit 10 should be set to indicate that
384 the branch is not expected to be taken. The lower two bits must
386 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
390 TRUE
, /* pc_relative */
392 complain_overflow_signed
, /* complain_on_overflow */
393 bfd_elf_generic_reloc
, /* special_function */
394 "R_PPC_REL14_BRNTAKEN",/* name */
395 FALSE
, /* partial_inplace */
397 0xfffc, /* dst_mask */
398 TRUE
), /* pcrel_offset */
400 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
402 HOWTO (R_PPC_GOT16
, /* type */
404 1, /* size (0 = byte, 1 = short, 2 = long) */
406 FALSE
, /* pc_relative */
408 complain_overflow_signed
, /* complain_on_overflow */
409 bfd_elf_generic_reloc
, /* special_function */
410 "R_PPC_GOT16", /* name */
411 FALSE
, /* partial_inplace */
413 0xffff, /* dst_mask */
414 FALSE
), /* pcrel_offset */
416 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
418 HOWTO (R_PPC_GOT16_LO
, /* type */
420 1, /* size (0 = byte, 1 = short, 2 = long) */
422 FALSE
, /* pc_relative */
424 complain_overflow_dont
, /* complain_on_overflow */
425 bfd_elf_generic_reloc
, /* special_function */
426 "R_PPC_GOT16_LO", /* name */
427 FALSE
, /* partial_inplace */
429 0xffff, /* dst_mask */
430 FALSE
), /* pcrel_offset */
432 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
434 HOWTO (R_PPC_GOT16_HI
, /* type */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
438 FALSE
, /* pc_relative */
440 complain_overflow_bitfield
, /* complain_on_overflow */
441 bfd_elf_generic_reloc
, /* special_function */
442 "R_PPC_GOT16_HI", /* name */
443 FALSE
, /* partial_inplace */
445 0xffff, /* dst_mask */
446 FALSE
), /* pcrel_offset */
448 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
450 HOWTO (R_PPC_GOT16_HA
, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE
, /* pc_relative */
456 complain_overflow_bitfield
, /* complain_on_overflow */
457 ppc_elf_addr16_ha_reloc
, /* special_function */
458 "R_PPC_GOT16_HA", /* name */
459 FALSE
, /* partial_inplace */
461 0xffff, /* dst_mask */
462 FALSE
), /* pcrel_offset */
464 /* Like R_PPC_REL24, but referring to the procedure linkage table
465 entry for the symbol. */
466 HOWTO (R_PPC_PLTREL24
, /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 TRUE
, /* pc_relative */
472 complain_overflow_signed
, /* complain_on_overflow */
473 bfd_elf_generic_reloc
, /* special_function */
474 "R_PPC_PLTREL24", /* name */
475 FALSE
, /* partial_inplace */
477 0x3fffffc, /* dst_mask */
478 TRUE
), /* pcrel_offset */
480 /* This is used only by the dynamic linker. The symbol should exist
481 both in the object being run and in some shared library. The
482 dynamic linker copies the data addressed by the symbol from the
483 shared library into the object, because the object being
484 run has to have the data at some particular address. */
485 HOWTO (R_PPC_COPY
, /* 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_COPY", /* name */
494 FALSE
, /* partial_inplace */
497 FALSE
), /* pcrel_offset */
499 /* Like R_PPC_ADDR32, but used when setting global offset table
501 HOWTO (R_PPC_GLOB_DAT
, /* type */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE
, /* pc_relative */
507 complain_overflow_bitfield
, /* complain_on_overflow */
508 bfd_elf_generic_reloc
, /* special_function */
509 "R_PPC_GLOB_DAT", /* name */
510 FALSE
, /* partial_inplace */
512 0xffffffff, /* dst_mask */
513 FALSE
), /* pcrel_offset */
515 /* Marks a procedure linkage table entry for a symbol. */
516 HOWTO (R_PPC_JMP_SLOT
, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_bitfield
, /* complain_on_overflow */
523 bfd_elf_generic_reloc
, /* special_function */
524 "R_PPC_JMP_SLOT", /* name */
525 FALSE
, /* partial_inplace */
528 FALSE
), /* pcrel_offset */
530 /* Used only by the dynamic linker. When the object is run, this
531 longword is set to the load address of the object, plus the
533 HOWTO (R_PPC_RELATIVE
, /* type */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
537 FALSE
, /* pc_relative */
539 complain_overflow_bitfield
, /* complain_on_overflow */
540 bfd_elf_generic_reloc
, /* special_function */
541 "R_PPC_RELATIVE", /* name */
542 FALSE
, /* partial_inplace */
544 0xffffffff, /* dst_mask */
545 FALSE
), /* pcrel_offset */
547 /* Like R_PPC_REL24, but uses the value of the symbol within the
548 object rather than the final value. Normally used for
549 _GLOBAL_OFFSET_TABLE_. */
550 HOWTO (R_PPC_LOCAL24PC
, /* type */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
554 TRUE
, /* pc_relative */
556 complain_overflow_signed
, /* complain_on_overflow */
557 bfd_elf_generic_reloc
, /* special_function */
558 "R_PPC_LOCAL24PC", /* name */
559 FALSE
, /* partial_inplace */
561 0x3fffffc, /* dst_mask */
562 TRUE
), /* pcrel_offset */
564 /* Like R_PPC_ADDR32, but may be unaligned. */
565 HOWTO (R_PPC_UADDR32
, /* type */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
569 FALSE
, /* pc_relative */
571 complain_overflow_bitfield
, /* complain_on_overflow */
572 bfd_elf_generic_reloc
, /* special_function */
573 "R_PPC_UADDR32", /* name */
574 FALSE
, /* partial_inplace */
576 0xffffffff, /* dst_mask */
577 FALSE
), /* pcrel_offset */
579 /* Like R_PPC_ADDR16, but may be unaligned. */
580 HOWTO (R_PPC_UADDR16
, /* type */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_bitfield
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* special_function */
588 "R_PPC_UADDR16", /* name */
589 FALSE
, /* partial_inplace */
591 0xffff, /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 /* 32-bit PC relative */
595 HOWTO (R_PPC_REL32
, /* type */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
599 TRUE
, /* pc_relative */
601 complain_overflow_bitfield
, /* complain_on_overflow */
602 bfd_elf_generic_reloc
, /* special_function */
603 "R_PPC_REL32", /* name */
604 FALSE
, /* partial_inplace */
606 0xffffffff, /* dst_mask */
607 TRUE
), /* pcrel_offset */
609 /* 32-bit relocation to the symbol's procedure linkage table.
610 FIXME: not supported. */
611 HOWTO (R_PPC_PLT32
, /* type */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
615 FALSE
, /* pc_relative */
617 complain_overflow_bitfield
, /* complain_on_overflow */
618 bfd_elf_generic_reloc
, /* special_function */
619 "R_PPC_PLT32", /* name */
620 FALSE
, /* partial_inplace */
623 FALSE
), /* pcrel_offset */
625 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
626 FIXME: not supported. */
627 HOWTO (R_PPC_PLTREL32
, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 TRUE
, /* pc_relative */
633 complain_overflow_bitfield
, /* complain_on_overflow */
634 bfd_elf_generic_reloc
, /* special_function */
635 "R_PPC_PLTREL32", /* name */
636 FALSE
, /* partial_inplace */
639 TRUE
), /* pcrel_offset */
641 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
643 HOWTO (R_PPC_PLT16_LO
, /* type */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
, /* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_PPC_PLT16_LO", /* name */
652 FALSE
, /* partial_inplace */
654 0xffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
659 HOWTO (R_PPC_PLT16_HI
, /* type */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
663 FALSE
, /* pc_relative */
665 complain_overflow_bitfield
, /* complain_on_overflow */
666 bfd_elf_generic_reloc
, /* special_function */
667 "R_PPC_PLT16_HI", /* name */
668 FALSE
, /* partial_inplace */
670 0xffff, /* dst_mask */
671 FALSE
), /* pcrel_offset */
673 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
675 HOWTO (R_PPC_PLT16_HA
, /* type */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
679 FALSE
, /* pc_relative */
681 complain_overflow_bitfield
, /* complain_on_overflow */
682 ppc_elf_addr16_ha_reloc
, /* special_function */
683 "R_PPC_PLT16_HA", /* name */
684 FALSE
, /* partial_inplace */
686 0xffff, /* dst_mask */
687 FALSE
), /* pcrel_offset */
689 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
691 HOWTO (R_PPC_SDAREL16
, /* type */
693 1, /* size (0 = byte, 1 = short, 2 = long) */
695 FALSE
, /* pc_relative */
697 complain_overflow_signed
, /* complain_on_overflow */
698 bfd_elf_generic_reloc
, /* special_function */
699 "R_PPC_SDAREL16", /* name */
700 FALSE
, /* partial_inplace */
702 0xffff, /* dst_mask */
703 FALSE
), /* pcrel_offset */
705 /* 16-bit section relative relocation. */
706 HOWTO (R_PPC_SECTOFF
, /* type */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
710 FALSE
, /* pc_relative */
712 complain_overflow_bitfield
, /* complain_on_overflow */
713 bfd_elf_generic_reloc
, /* special_function */
714 "R_PPC_SECTOFF", /* name */
715 FALSE
, /* partial_inplace */
717 0xffff, /* dst_mask */
718 FALSE
), /* pcrel_offset */
720 /* 16-bit lower half section relative relocation. */
721 HOWTO (R_PPC_SECTOFF_LO
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_dont
, /* complain_on_overflow */
728 bfd_elf_generic_reloc
, /* special_function */
729 "R_PPC_SECTOFF_LO", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* 16-bit upper half section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_HI
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_bitfield
, /* complain_on_overflow */
743 bfd_elf_generic_reloc
, /* special_function */
744 "R_PPC_SECTOFF_HI", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* 16-bit upper half adjusted section relative relocation. */
751 HOWTO (R_PPC_SECTOFF_HA
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_bitfield
, /* complain_on_overflow */
758 ppc_elf_addr16_ha_reloc
, /* special_function */
759 "R_PPC_SECTOFF_HA", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* Marker relocs for TLS. */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_dont
, /* complain_on_overflow */
773 bfd_elf_generic_reloc
, /* special_function */
774 "R_PPC_TLS", /* name */
775 FALSE
, /* partial_inplace */
778 FALSE
), /* pcrel_offset */
782 2, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE
, /* pc_relative */
786 complain_overflow_dont
, /* complain_on_overflow */
787 bfd_elf_generic_reloc
, /* special_function */
788 "R_PPC_TLSGD", /* name */
789 FALSE
, /* partial_inplace */
792 FALSE
), /* pcrel_offset */
796 2, /* size (0 = byte, 1 = short, 2 = long) */
798 FALSE
, /* pc_relative */
800 complain_overflow_dont
, /* complain_on_overflow */
801 bfd_elf_generic_reloc
, /* special_function */
802 "R_PPC_TLSLD", /* name */
803 FALSE
, /* partial_inplace */
806 FALSE
), /* pcrel_offset */
808 /* Computes the load module index of the load module that contains the
809 definition of its TLS sym. */
810 HOWTO (R_PPC_DTPMOD32
,
812 2, /* size (0 = byte, 1 = short, 2 = long) */
814 FALSE
, /* pc_relative */
816 complain_overflow_dont
, /* complain_on_overflow */
817 ppc_elf_unhandled_reloc
, /* special_function */
818 "R_PPC_DTPMOD32", /* name */
819 FALSE
, /* partial_inplace */
821 0xffffffff, /* dst_mask */
822 FALSE
), /* pcrel_offset */
824 /* Computes a dtv-relative displacement, the difference between the value
825 of sym+add and the base address of the thread-local storage block that
826 contains the definition of sym, minus 0x8000. */
827 HOWTO (R_PPC_DTPREL32
,
829 2, /* size (0 = byte, 1 = short, 2 = long) */
831 FALSE
, /* pc_relative */
833 complain_overflow_dont
, /* complain_on_overflow */
834 ppc_elf_unhandled_reloc
, /* special_function */
835 "R_PPC_DTPREL32", /* name */
836 FALSE
, /* partial_inplace */
838 0xffffffff, /* dst_mask */
839 FALSE
), /* pcrel_offset */
841 /* A 16 bit dtprel reloc. */
842 HOWTO (R_PPC_DTPREL16
,
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE
, /* pc_relative */
848 complain_overflow_signed
, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc
, /* special_function */
850 "R_PPC_DTPREL16", /* name */
851 FALSE
, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE
), /* pcrel_offset */
856 /* Like DTPREL16, but no overflow. */
857 HOWTO (R_PPC_DTPREL16_LO
,
859 1, /* size (0 = byte, 1 = short, 2 = long) */
861 FALSE
, /* pc_relative */
863 complain_overflow_dont
, /* complain_on_overflow */
864 ppc_elf_unhandled_reloc
, /* special_function */
865 "R_PPC_DTPREL16_LO", /* name */
866 FALSE
, /* partial_inplace */
868 0xffff, /* dst_mask */
869 FALSE
), /* pcrel_offset */
871 /* Like DTPREL16_LO, but next higher group of 16 bits. */
872 HOWTO (R_PPC_DTPREL16_HI
,
874 1, /* size (0 = byte, 1 = short, 2 = long) */
876 FALSE
, /* pc_relative */
878 complain_overflow_dont
, /* complain_on_overflow */
879 ppc_elf_unhandled_reloc
, /* special_function */
880 "R_PPC_DTPREL16_HI", /* name */
881 FALSE
, /* partial_inplace */
883 0xffff, /* dst_mask */
884 FALSE
), /* pcrel_offset */
886 /* Like DTPREL16_HI, but adjust for low 16 bits. */
887 HOWTO (R_PPC_DTPREL16_HA
,
889 1, /* size (0 = byte, 1 = short, 2 = long) */
891 FALSE
, /* pc_relative */
893 complain_overflow_dont
, /* complain_on_overflow */
894 ppc_elf_unhandled_reloc
, /* special_function */
895 "R_PPC_DTPREL16_HA", /* name */
896 FALSE
, /* partial_inplace */
898 0xffff, /* dst_mask */
899 FALSE
), /* pcrel_offset */
901 /* Computes a tp-relative displacement, the difference between the value of
902 sym+add and the value of the thread pointer (r13). */
903 HOWTO (R_PPC_TPREL32
,
905 2, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE
, /* pc_relative */
909 complain_overflow_dont
, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc
, /* special_function */
911 "R_PPC_TPREL32", /* name */
912 FALSE
, /* partial_inplace */
914 0xffffffff, /* dst_mask */
915 FALSE
), /* pcrel_offset */
917 /* A 16 bit tprel reloc. */
918 HOWTO (R_PPC_TPREL16
,
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_signed
, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc
, /* special_function */
926 "R_PPC_TPREL16", /* name */
927 FALSE
, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* Like TPREL16, but no overflow. */
933 HOWTO (R_PPC_TPREL16_LO
,
935 1, /* size (0 = byte, 1 = short, 2 = long) */
937 FALSE
, /* pc_relative */
939 complain_overflow_dont
, /* complain_on_overflow */
940 ppc_elf_unhandled_reloc
, /* special_function */
941 "R_PPC_TPREL16_LO", /* name */
942 FALSE
, /* partial_inplace */
944 0xffff, /* dst_mask */
945 FALSE
), /* pcrel_offset */
947 /* Like TPREL16_LO, but next higher group of 16 bits. */
948 HOWTO (R_PPC_TPREL16_HI
,
950 1, /* size (0 = byte, 1 = short, 2 = long) */
952 FALSE
, /* pc_relative */
954 complain_overflow_dont
, /* complain_on_overflow */
955 ppc_elf_unhandled_reloc
, /* special_function */
956 "R_PPC_TPREL16_HI", /* name */
957 FALSE
, /* partial_inplace */
959 0xffff, /* dst_mask */
960 FALSE
), /* pcrel_offset */
962 /* Like TPREL16_HI, but adjust for low 16 bits. */
963 HOWTO (R_PPC_TPREL16_HA
,
965 1, /* size (0 = byte, 1 = short, 2 = long) */
967 FALSE
, /* pc_relative */
969 complain_overflow_dont
, /* complain_on_overflow */
970 ppc_elf_unhandled_reloc
, /* special_function */
971 "R_PPC_TPREL16_HA", /* name */
972 FALSE
, /* partial_inplace */
974 0xffff, /* dst_mask */
975 FALSE
), /* pcrel_offset */
977 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
978 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
979 to the first entry. */
980 HOWTO (R_PPC_GOT_TLSGD16
,
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE
, /* pc_relative */
986 complain_overflow_signed
, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc
, /* special_function */
988 "R_PPC_GOT_TLSGD16", /* name */
989 FALSE
, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE
), /* pcrel_offset */
994 /* Like GOT_TLSGD16, but no overflow. */
995 HOWTO (R_PPC_GOT_TLSGD16_LO
,
997 1, /* size (0 = byte, 1 = short, 2 = long) */
999 FALSE
, /* pc_relative */
1001 complain_overflow_dont
, /* complain_on_overflow */
1002 ppc_elf_unhandled_reloc
, /* special_function */
1003 "R_PPC_GOT_TLSGD16_LO", /* name */
1004 FALSE
, /* partial_inplace */
1006 0xffff, /* dst_mask */
1007 FALSE
), /* pcrel_offset */
1009 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1010 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1011 16, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_dont
, /* complain_on_overflow */
1017 ppc_elf_unhandled_reloc
, /* special_function */
1018 "R_PPC_GOT_TLSGD16_HI", /* name */
1019 FALSE
, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1025 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE
, /* pc_relative */
1031 complain_overflow_dont
, /* complain_on_overflow */
1032 ppc_elf_unhandled_reloc
, /* special_function */
1033 "R_PPC_GOT_TLSGD16_HA", /* name */
1034 FALSE
, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE
), /* pcrel_offset */
1039 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1040 with values (sym+add)@dtpmod and zero, and computes the offset to the
1042 HOWTO (R_PPC_GOT_TLSLD16
,
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_signed
, /* complain_on_overflow */
1049 ppc_elf_unhandled_reloc
, /* special_function */
1050 "R_PPC_GOT_TLSLD16", /* name */
1051 FALSE
, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1056 /* Like GOT_TLSLD16, but no overflow. */
1057 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_dont
, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc
, /* special_function */
1065 "R_PPC_GOT_TLSLD16_LO", /* name */
1066 FALSE
, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1072 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1073 16, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE
, /* pc_relative */
1078 complain_overflow_dont
, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc
, /* special_function */
1080 "R_PPC_GOT_TLSLD16_HI", /* name */
1081 FALSE
, /* partial_inplace */
1083 0xffff, /* dst_mask */
1084 FALSE
), /* pcrel_offset */
1086 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1087 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE
, /* pc_relative */
1093 complain_overflow_dont
, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc
, /* special_function */
1095 "R_PPC_GOT_TLSLD16_HA", /* name */
1096 FALSE
, /* partial_inplace */
1098 0xffff, /* dst_mask */
1099 FALSE
), /* pcrel_offset */
1101 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1102 the offset to the entry. */
1103 HOWTO (R_PPC_GOT_DTPREL16
,
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_signed
, /* complain_on_overflow */
1110 ppc_elf_unhandled_reloc
, /* special_function */
1111 "R_PPC_GOT_DTPREL16", /* name */
1112 FALSE
, /* partial_inplace */
1114 0xffff, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Like GOT_DTPREL16, but no overflow. */
1118 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_dont
, /* complain_on_overflow */
1125 ppc_elf_unhandled_reloc
, /* special_function */
1126 "R_PPC_GOT_DTPREL16_LO", /* name */
1127 FALSE
, /* partial_inplace */
1129 0xffff, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1133 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1134 16, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_dont
, /* complain_on_overflow */
1140 ppc_elf_unhandled_reloc
, /* special_function */
1141 "R_PPC_GOT_DTPREL16_HI", /* name */
1142 FALSE
, /* partial_inplace */
1144 0xffff, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1148 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1149 16, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_dont
, /* complain_on_overflow */
1155 ppc_elf_unhandled_reloc
, /* special_function */
1156 "R_PPC_GOT_DTPREL16_HA", /* name */
1157 FALSE
, /* partial_inplace */
1159 0xffff, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1163 offset to the entry. */
1164 HOWTO (R_PPC_GOT_TPREL16
,
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE
, /* pc_relative */
1170 complain_overflow_signed
, /* complain_on_overflow */
1171 ppc_elf_unhandled_reloc
, /* special_function */
1172 "R_PPC_GOT_TPREL16", /* name */
1173 FALSE
, /* partial_inplace */
1175 0xffff, /* dst_mask */
1176 FALSE
), /* pcrel_offset */
1178 /* Like GOT_TPREL16, but no overflow. */
1179 HOWTO (R_PPC_GOT_TPREL16_LO
,
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE
, /* pc_relative */
1185 complain_overflow_dont
, /* complain_on_overflow */
1186 ppc_elf_unhandled_reloc
, /* special_function */
1187 "R_PPC_GOT_TPREL16_LO", /* name */
1188 FALSE
, /* partial_inplace */
1190 0xffff, /* dst_mask */
1191 FALSE
), /* pcrel_offset */
1193 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1194 HOWTO (R_PPC_GOT_TPREL16_HI
,
1195 16, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE
, /* pc_relative */
1200 complain_overflow_dont
, /* complain_on_overflow */
1201 ppc_elf_unhandled_reloc
, /* special_function */
1202 "R_PPC_GOT_TPREL16_HI", /* name */
1203 FALSE
, /* partial_inplace */
1205 0xffff, /* dst_mask */
1206 FALSE
), /* pcrel_offset */
1208 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1209 HOWTO (R_PPC_GOT_TPREL16_HA
,
1210 16, /* rightshift */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE
, /* pc_relative */
1215 complain_overflow_dont
, /* complain_on_overflow */
1216 ppc_elf_unhandled_reloc
, /* special_function */
1217 "R_PPC_GOT_TPREL16_HA", /* name */
1218 FALSE
, /* partial_inplace */
1220 0xffff, /* dst_mask */
1221 FALSE
), /* pcrel_offset */
1223 /* The remaining relocs are from the Embedded ELF ABI, and are not
1224 in the SVR4 ELF ABI. */
1226 /* 32 bit value resulting from the addend minus the symbol. */
1227 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_bitfield
, /* complain_on_overflow */
1234 bfd_elf_generic_reloc
, /* special_function */
1235 "R_PPC_EMB_NADDR32", /* name */
1236 FALSE
, /* partial_inplace */
1238 0xffffffff, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* 16 bit value resulting from the addend minus the symbol. */
1242 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_bitfield
, /* complain_on_overflow */
1249 bfd_elf_generic_reloc
, /* special_function */
1250 "R_PPC_EMB_NADDR16", /* name */
1251 FALSE
, /* partial_inplace */
1253 0xffff, /* dst_mask */
1254 FALSE
), /* pcrel_offset */
1256 /* 16 bit value resulting from the addend minus the symbol. */
1257 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1259 1, /* size (0 = byte, 1 = short, 2 = long) */
1261 FALSE
, /* pc_relative */
1263 complain_overflow_dont
,/* complain_on_overflow */
1264 bfd_elf_generic_reloc
, /* special_function */
1265 "R_PPC_EMB_ADDR16_LO", /* name */
1266 FALSE
, /* partial_inplace */
1268 0xffff, /* dst_mask */
1269 FALSE
), /* pcrel_offset */
1271 /* The high order 16 bits of the addend minus the symbol. */
1272 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1273 16, /* rightshift */
1274 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 FALSE
, /* pc_relative */
1278 complain_overflow_dont
, /* complain_on_overflow */
1279 bfd_elf_generic_reloc
, /* special_function */
1280 "R_PPC_EMB_NADDR16_HI", /* name */
1281 FALSE
, /* partial_inplace */
1283 0xffff, /* dst_mask */
1284 FALSE
), /* pcrel_offset */
1286 /* The high order 16 bits of the result of the addend minus the address,
1287 plus 1 if the contents of the low 16 bits, treated as a signed number,
1289 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1290 16, /* rightshift */
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE
, /* pc_relative */
1295 complain_overflow_dont
, /* complain_on_overflow */
1296 ppc_elf_addr16_ha_reloc
, /* special_function */
1297 "R_PPC_EMB_NADDR16_HA", /* name */
1298 FALSE
, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE
), /* pcrel_offset */
1303 /* 16 bit value resulting from allocating a 4 byte word to hold an
1304 address in the .sdata section, and returning the offset from
1305 _SDA_BASE_ for that relocation. */
1306 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1308 1, /* size (0 = byte, 1 = short, 2 = long) */
1310 FALSE
, /* pc_relative */
1312 complain_overflow_signed
, /* complain_on_overflow */
1313 bfd_elf_generic_reloc
, /* special_function */
1314 "R_PPC_EMB_SDAI16", /* name */
1315 FALSE
, /* partial_inplace */
1317 0xffff, /* dst_mask */
1318 FALSE
), /* pcrel_offset */
1320 /* 16 bit value resulting from allocating a 4 byte word to hold an
1321 address in the .sdata2 section, and returning the offset from
1322 _SDA2_BASE_ for that relocation. */
1323 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1325 1, /* size (0 = byte, 1 = short, 2 = long) */
1327 FALSE
, /* pc_relative */
1329 complain_overflow_signed
, /* complain_on_overflow */
1330 bfd_elf_generic_reloc
, /* special_function */
1331 "R_PPC_EMB_SDA2I16", /* name */
1332 FALSE
, /* partial_inplace */
1334 0xffff, /* dst_mask */
1335 FALSE
), /* pcrel_offset */
1337 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1338 small data items. */
1339 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1341 1, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE
, /* pc_relative */
1345 complain_overflow_signed
, /* complain_on_overflow */
1346 bfd_elf_generic_reloc
, /* special_function */
1347 "R_PPC_EMB_SDA2REL", /* name */
1348 FALSE
, /* partial_inplace */
1350 0xffff, /* dst_mask */
1351 FALSE
), /* pcrel_offset */
1353 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1354 signed offset from the appropriate base, and filling in the register
1355 field with the appropriate register (0, 2, or 13). */
1356 HOWTO (R_PPC_EMB_SDA21
, /* type */
1358 2, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE
, /* pc_relative */
1362 complain_overflow_signed
, /* complain_on_overflow */
1363 bfd_elf_generic_reloc
, /* special_function */
1364 "R_PPC_EMB_SDA21", /* name */
1365 FALSE
, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE
), /* pcrel_offset */
1370 /* Relocation not handled: R_PPC_EMB_MRKREF */
1371 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1372 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1373 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1374 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1375 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1377 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1378 in the 16 bit signed offset from the appropriate base, and filling in the
1379 register field with the appropriate register (0, 2, or 13). */
1380 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 FALSE
, /* pc_relative */
1386 complain_overflow_signed
, /* complain_on_overflow */
1387 bfd_elf_generic_reloc
, /* special_function */
1388 "R_PPC_EMB_RELSDA", /* name */
1389 FALSE
, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 FALSE
), /* pcrel_offset */
1394 HOWTO (R_PPC_IRELATIVE
, /* type */
1396 2, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE
, /* pc_relative */
1400 complain_overflow_bitfield
, /* complain_on_overflow */
1401 bfd_elf_generic_reloc
, /* special_function */
1402 "R_PPC_IRELATIVE", /* name */
1403 FALSE
, /* partial_inplace */
1405 0xffffffff, /* dst_mask */
1406 FALSE
), /* pcrel_offset */
1408 /* A 16 bit relative relocation. */
1409 HOWTO (R_PPC_REL16
, /* type */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 TRUE
, /* pc_relative */
1415 complain_overflow_bitfield
, /* complain_on_overflow */
1416 bfd_elf_generic_reloc
, /* special_function */
1417 "R_PPC_REL16", /* name */
1418 FALSE
, /* partial_inplace */
1420 0xffff, /* dst_mask */
1421 TRUE
), /* pcrel_offset */
1423 /* A 16 bit relative relocation without overflow. */
1424 HOWTO (R_PPC_REL16_LO
, /* type */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 TRUE
, /* pc_relative */
1430 complain_overflow_dont
,/* complain_on_overflow */
1431 bfd_elf_generic_reloc
, /* special_function */
1432 "R_PPC_REL16_LO", /* name */
1433 FALSE
, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 TRUE
), /* pcrel_offset */
1438 /* The high order 16 bits of a relative address. */
1439 HOWTO (R_PPC_REL16_HI
, /* type */
1440 16, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 TRUE
, /* pc_relative */
1445 complain_overflow_dont
, /* complain_on_overflow */
1446 bfd_elf_generic_reloc
, /* special_function */
1447 "R_PPC_REL16_HI", /* name */
1448 FALSE
, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 TRUE
), /* pcrel_offset */
1453 /* The high order 16 bits of a relative address, plus 1 if the contents of
1454 the low 16 bits, treated as a signed number, is negative. */
1455 HOWTO (R_PPC_REL16_HA
, /* type */
1456 16, /* rightshift */
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 TRUE
, /* pc_relative */
1461 complain_overflow_dont
, /* complain_on_overflow */
1462 ppc_elf_addr16_ha_reloc
, /* special_function */
1463 "R_PPC_REL16_HA", /* name */
1464 FALSE
, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 TRUE
), /* pcrel_offset */
1469 /* GNU extension to record C++ vtable hierarchy. */
1470 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1472 0, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE
, /* pc_relative */
1476 complain_overflow_dont
, /* complain_on_overflow */
1477 NULL
, /* special_function */
1478 "R_PPC_GNU_VTINHERIT", /* name */
1479 FALSE
, /* partial_inplace */
1482 FALSE
), /* pcrel_offset */
1484 /* GNU extension to record C++ vtable member usage. */
1485 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1487 0, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE
, /* pc_relative */
1491 complain_overflow_dont
, /* complain_on_overflow */
1492 NULL
, /* special_function */
1493 "R_PPC_GNU_VTENTRY", /* name */
1494 FALSE
, /* partial_inplace */
1497 FALSE
), /* pcrel_offset */
1499 /* Phony reloc to handle AIX style TOC entries. */
1500 HOWTO (R_PPC_TOC16
, /* type */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_signed
, /* complain_on_overflow */
1507 bfd_elf_generic_reloc
, /* special_function */
1508 "R_PPC_TOC16", /* name */
1509 FALSE
, /* partial_inplace */
1511 0xffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1515 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1518 ppc_elf_howto_init (void)
1520 unsigned int i
, type
;
1523 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1526 type
= ppc_elf_howto_raw
[i
].type
;
1527 if (type
>= (sizeof (ppc_elf_howto_table
)
1528 / sizeof (ppc_elf_howto_table
[0])))
1530 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1534 static reloc_howto_type
*
1535 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1536 bfd_reloc_code_real_type code
)
1538 enum elf_ppc_reloc_type r
;
1540 /* Initialize howto table if not already done. */
1541 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1542 ppc_elf_howto_init ();
1549 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1550 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1551 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1552 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1553 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1554 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1555 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1556 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1557 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1558 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1559 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1560 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1561 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1562 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1563 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1564 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1565 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1566 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1567 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1568 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1569 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1570 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1571 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1572 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1573 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1574 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1575 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1576 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1577 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1578 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1579 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1580 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1581 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1582 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1583 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1584 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1585 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1586 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1587 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1588 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1589 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1590 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1591 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1592 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1593 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1594 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1595 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1596 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1597 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1598 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1601 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1602 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1605 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1606 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1609 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1610 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1613 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1614 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1615 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1618 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1619 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1620 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1621 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1622 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1623 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1624 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1625 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1626 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1627 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1628 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1629 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1630 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1631 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1632 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1633 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1634 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1635 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1638 return ppc_elf_howto_table
[r
];
1641 static reloc_howto_type
*
1642 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1648 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1650 if (ppc_elf_howto_raw
[i
].name
!= NULL
1651 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
1652 return &ppc_elf_howto_raw
[i
];
1657 /* Set the howto pointer for a PowerPC ELF reloc. */
1660 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1662 Elf_Internal_Rela
*dst
)
1664 /* Initialize howto table if not already done. */
1665 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1666 ppc_elf_howto_init ();
1668 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1669 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1671 /* Just because the above assert didn't trigger doesn't mean that
1672 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1673 if (!cache_ptr
->howto
)
1675 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
1676 abfd
, ELF32_R_TYPE (dst
->r_info
));
1677 bfd_set_error (bfd_error_bad_value
);
1679 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
1683 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1685 static bfd_reloc_status_type
1686 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
1687 arelent
*reloc_entry
,
1689 void *data ATTRIBUTE_UNUSED
,
1690 asection
*input_section
,
1692 char **error_message ATTRIBUTE_UNUSED
)
1696 if (output_bfd
!= NULL
)
1698 reloc_entry
->address
+= input_section
->output_offset
;
1699 return bfd_reloc_ok
;
1702 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
1703 return bfd_reloc_outofrange
;
1705 if (bfd_is_com_section (symbol
->section
))
1708 relocation
= symbol
->value
;
1710 relocation
+= symbol
->section
->output_section
->vma
;
1711 relocation
+= symbol
->section
->output_offset
;
1712 relocation
+= reloc_entry
->addend
;
1713 if (reloc_entry
->howto
->pc_relative
)
1714 relocation
-= reloc_entry
->address
;
1716 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1718 return bfd_reloc_continue
;
1721 static bfd_reloc_status_type
1722 ppc_elf_unhandled_reloc (bfd
*abfd
,
1723 arelent
*reloc_entry
,
1726 asection
*input_section
,
1728 char **error_message
)
1730 /* If this is a relocatable link (output_bfd test tells us), just
1731 call the generic function. Any adjustment will be done at final
1733 if (output_bfd
!= NULL
)
1734 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
1735 input_section
, output_bfd
, error_message
);
1737 if (error_message
!= NULL
)
1739 static char buf
[60];
1740 sprintf (buf
, _("generic linker can't handle %s"),
1741 reloc_entry
->howto
->name
);
1742 *error_message
= buf
;
1744 return bfd_reloc_dangerous
;
1747 /* Sections created by the linker. */
1749 typedef struct elf_linker_section
1751 /* Pointer to the bfd section. */
1755 /* Associated bss section name. */
1756 const char *bss_name
;
1757 /* Associated symbol name. */
1758 const char *sym_name
;
1759 /* Associated symbol. */
1760 struct elf_link_hash_entry
*sym
;
1761 } elf_linker_section_t
;
1763 /* Linked list of allocated pointer entries. This hangs off of the
1764 symbol lists, and provides allows us to return different pointers,
1765 based on different addend's. */
1767 typedef struct elf_linker_section_pointers
1769 /* next allocated pointer for this symbol */
1770 struct elf_linker_section_pointers
*next
;
1771 /* offset of pointer from beginning of section */
1775 /* which linker section this is */
1776 elf_linker_section_t
*lsect
;
1777 } elf_linker_section_pointers_t
;
1779 struct ppc_elf_obj_tdata
1781 struct elf_obj_tdata elf
;
1783 /* A mapping from local symbols to offsets into the various linker
1784 sections added. This is index by the symbol index. */
1785 elf_linker_section_pointers_t
**linker_section_pointers
;
1787 /* Flags used to auto-detect plt type. */
1788 unsigned int makes_plt_call
: 1;
1789 unsigned int has_rel16
: 1;
1792 #define ppc_elf_tdata(bfd) \
1793 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1795 #define elf_local_ptr_offsets(bfd) \
1796 (ppc_elf_tdata (bfd)->linker_section_pointers)
1798 #define is_ppc_elf(bfd) \
1799 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1800 && elf_object_id (bfd) == PPC32_ELF_DATA)
1802 /* Override the generic function because we store some extras. */
1805 ppc_elf_mkobject (bfd
*abfd
)
1807 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
1811 /* Fix bad default arch selected for a 32 bit input bfd when the
1812 default is 64 bit. */
1815 ppc_elf_object_p (bfd
*abfd
)
1817 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1819 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1821 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1823 /* Relies on arch after 64 bit default being 32 bit default. */
1824 abfd
->arch_info
= abfd
->arch_info
->next
;
1825 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1831 /* Function to set whether a module needs the -mrelocatable bit set. */
1834 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1836 BFD_ASSERT (!elf_flags_init (abfd
)
1837 || elf_elfheader (abfd
)->e_flags
== flags
);
1839 elf_elfheader (abfd
)->e_flags
= flags
;
1840 elf_flags_init (abfd
) = TRUE
;
1844 /* Support for core dump NOTE sections. */
1847 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1852 switch (note
->descsz
)
1857 case 268: /* Linux/PPC. */
1859 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1862 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1871 /* Make a ".reg/999" section. */
1872 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1873 size
, note
->descpos
+ offset
);
1877 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1879 switch (note
->descsz
)
1884 case 128: /* Linux/PPC elf_prpsinfo. */
1885 elf_tdata (abfd
)->core_pid
1886 = bfd_get_32 (abfd
, note
->descdata
+ 16);
1887 elf_tdata (abfd
)->core_program
1888 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1889 elf_tdata (abfd
)->core_command
1890 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1893 /* Note that for some reason, a spurious space is tacked
1894 onto the end of the args in some (at least one anyway)
1895 implementations, so strip it off if it exists. */
1898 char *command
= elf_tdata (abfd
)->core_command
;
1899 int n
= strlen (command
);
1901 if (0 < n
&& command
[n
- 1] == ' ')
1902 command
[n
- 1] = '\0';
1909 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
1921 va_start (ap
, note_type
);
1922 memset (data
, 0, 32);
1923 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
1924 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
1926 return elfcore_write_note (abfd
, buf
, bufsiz
,
1927 "CORE", note_type
, data
, sizeof (data
));
1938 va_start (ap
, note_type
);
1939 memset (data
, 0, 72);
1940 pid
= va_arg (ap
, long);
1941 bfd_put_32 (abfd
, pid
, data
+ 24);
1942 cursig
= va_arg (ap
, int);
1943 bfd_put_16 (abfd
, cursig
, data
+ 12);
1944 greg
= va_arg (ap
, const void *);
1945 memcpy (data
+ 72, greg
, 192);
1946 memset (data
+ 264, 0, 4);
1948 return elfcore_write_note (abfd
, buf
, bufsiz
,
1949 "CORE", note_type
, data
, sizeof (data
));
1954 /* Return address for Ith PLT stub in section PLT, for relocation REL
1955 or (bfd_vma) -1 if it should not be included. */
1958 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1959 const asection
*plt ATTRIBUTE_UNUSED
,
1962 return rel
->address
;
1965 /* Handle a PowerPC specific section when reading an object file. This
1966 is called when bfd_section_from_shdr finds a section with an unknown
1970 ppc_elf_section_from_shdr (bfd
*abfd
,
1971 Elf_Internal_Shdr
*hdr
,
1978 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1981 newsect
= hdr
->bfd_section
;
1982 flags
= bfd_get_section_flags (abfd
, newsect
);
1983 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1984 flags
|= SEC_EXCLUDE
;
1986 if (hdr
->sh_type
== SHT_ORDERED
)
1987 flags
|= SEC_SORT_ENTRIES
;
1989 bfd_set_section_flags (abfd
, newsect
, flags
);
1993 /* Set up any other section flags and such that may be necessary. */
1996 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1997 Elf_Internal_Shdr
*shdr
,
2000 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2001 shdr
->sh_type
= SHT_ORDERED
;
2006 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2007 need to bump up the number of section headers. */
2010 ppc_elf_additional_program_headers (bfd
*abfd
,
2011 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2016 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2017 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2020 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2021 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2027 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2028 .PPC.EMB.sbss0 a normal section, and not a bss section so
2029 that the linker doesn't crater when trying to make more than
2032 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2034 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2035 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2036 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2037 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2038 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2039 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2040 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
2041 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2042 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2043 { NULL
, 0, 0, 0, 0 }
2046 /* This is what we want for new plt/got. */
2047 static struct bfd_elf_special_section ppc_alt_plt
=
2048 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2050 static const struct bfd_elf_special_section
*
2051 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2053 const struct bfd_elf_special_section
*ssect
;
2055 /* See if this is one of the special sections. */
2056 if (sec
->name
== NULL
)
2059 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2063 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2064 ssect
= &ppc_alt_plt
;
2068 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2071 /* Very simple linked list structure for recording apuinfo values. */
2072 typedef struct apuinfo_list
2074 struct apuinfo_list
*next
;
2075 unsigned long value
;
2079 static apuinfo_list
*head
;
2080 static bfd_boolean apuinfo_set
;
2083 apuinfo_list_init (void)
2086 apuinfo_set
= FALSE
;
2090 apuinfo_list_add (unsigned long value
)
2092 apuinfo_list
*entry
= head
;
2094 while (entry
!= NULL
)
2096 if (entry
->value
== value
)
2098 entry
= entry
->next
;
2101 entry
= bfd_malloc (sizeof (* entry
));
2105 entry
->value
= value
;
2111 apuinfo_list_length (void)
2113 apuinfo_list
*entry
;
2114 unsigned long count
;
2116 for (entry
= head
, count
= 0;
2118 entry
= entry
->next
)
2124 static inline unsigned long
2125 apuinfo_list_element (unsigned long number
)
2127 apuinfo_list
* entry
;
2131 entry
= entry
->next
)
2134 return entry
? entry
->value
: 0;
2138 apuinfo_list_finish (void)
2140 apuinfo_list
*entry
;
2142 for (entry
= head
; entry
;)
2144 apuinfo_list
*next
= entry
->next
;
2152 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2153 #define APUINFO_LABEL "APUinfo"
2155 /* Scan the input BFDs and create a linked list of
2156 the APUinfo values that will need to be emitted. */
2159 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2163 char *buffer
= NULL
;
2164 bfd_size_type largest_input_size
= 0;
2166 unsigned long length
;
2167 const char *error_message
= NULL
;
2169 if (link_info
== NULL
)
2172 apuinfo_list_init ();
2174 /* Read in the input sections contents. */
2175 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2177 unsigned long datum
;
2179 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2183 error_message
= _("corrupt %s section in %B");
2184 length
= asec
->size
;
2189 if (largest_input_size
< asec
->size
)
2193 largest_input_size
= asec
->size
;
2194 buffer
= bfd_malloc (largest_input_size
);
2199 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2200 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2202 error_message
= _("unable to read in %s section from %B");
2206 /* Verify the contents of the header. Note - we have to
2207 extract the values this way in order to allow for a
2208 host whose endian-ness is different from the target. */
2209 datum
= bfd_get_32 (ibfd
, buffer
);
2210 if (datum
!= sizeof APUINFO_LABEL
)
2213 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2217 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2220 /* Get the number of bytes used for apuinfo entries. */
2221 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2222 if (datum
+ 20 != length
)
2225 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2226 for (i
= 0; i
< datum
; i
+= 4)
2227 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2230 error_message
= NULL
;
2234 /* Compute the size of the output section. */
2235 unsigned num_entries
= apuinfo_list_length ();
2237 /* Set the output section size, if it exists. */
2238 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2240 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2243 error_message
= _("warning: unable to set size of %s section in %B");
2252 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2255 /* Prevent the output section from accumulating the input sections'
2256 contents. We have already stored this in our linked list structure. */
2259 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2260 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2262 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2264 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2267 /* Finally we can generate the output section. */
2270 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2275 unsigned num_entries
;
2276 bfd_size_type length
;
2278 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2285 length
= asec
->size
;
2289 buffer
= bfd_malloc (length
);
2292 (*_bfd_error_handler
)
2293 (_("failed to allocate space for new APUinfo section."));
2297 /* Create the apuinfo header. */
2298 num_entries
= apuinfo_list_length ();
2299 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2300 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2301 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2302 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2305 for (i
= 0; i
< num_entries
; i
++)
2307 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2311 if (length
!= asec
->size
)
2312 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2314 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2315 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2319 apuinfo_list_finish ();
2323 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2325 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2327 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2330 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2331 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2332 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2333 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2337 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2339 bfd_vma vma
= *(bfd_vma
*) ptr
;
2340 return ((section
->flags
& SEC_ALLOC
) != 0
2341 && section
->vma
<= vma
2342 && vma
< section
->vma
+ section
->size
);
2346 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2347 long dynsymcount
, asymbol
**dynsyms
,
2350 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2351 asection
*plt
, *relplt
, *dynamic
, *glink
;
2352 bfd_vma glink_vma
= 0;
2353 bfd_vma resolv_vma
= 0;
2364 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2367 if (dynsymcount
<= 0)
2370 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2374 plt
= bfd_get_section_by_name (abfd
, ".plt");
2378 /* Call common code to handle old-style executable PLTs. */
2379 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2380 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2381 dynsymcount
, dynsyms
, ret
);
2383 /* If this object was prelinked, the prelinker stored the address
2384 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2385 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2386 if (dynamic
!= NULL
)
2388 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2390 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2392 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2395 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2396 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2399 extdynend
= extdyn
+ dynamic
->size
;
2400 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2402 Elf_Internal_Dyn dyn
;
2403 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2405 if (dyn
.d_tag
== DT_NULL
)
2408 if (dyn
.d_tag
== DT_PPC_GOT
)
2410 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2411 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2413 && bfd_get_section_contents (abfd
, got
, buf
,
2414 g_o_t
- got
->vma
+ 4, 4))
2415 glink_vma
= bfd_get_32 (abfd
, buf
);
2422 /* Otherwise we read the first plt entry. */
2425 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2426 glink_vma
= bfd_get_32 (abfd
, buf
);
2432 /* The .glink section usually does not survive the final
2433 link; search for the section (usually .text) where the
2434 glink stubs now reside. */
2435 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2439 /* Determine glink PLT resolver by reading the relative branch
2440 from the first glink stub. */
2441 if (bfd_get_section_contents (abfd
, glink
, buf
,
2442 glink_vma
- glink
->vma
, 4))
2444 unsigned int insn
= bfd_get_32 (abfd
, buf
);
2446 /* The first glink stub may either branch to the resolver ... */
2448 if ((insn
& ~0x3fffffc) == 0)
2449 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
2451 /* ... or fall through a bunch of NOPs. */
2452 else if ((insn
^ B
^ NOP
) == 0)
2454 bfd_get_section_contents (abfd
, glink
, buf
,
2455 glink_vma
- glink
->vma
+ i
, 4);
2457 if (bfd_get_32 (abfd
, buf
) != NOP
)
2459 resolv_vma
= glink_vma
+ i
;
2464 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
2465 stub_vma
= glink_vma
- (bfd_vma
) count
* 16;
2466 /* If the stubs are those for -shared/-pie then we might have
2467 multiple stubs for each plt entry. If that is the case then
2468 there is no way to associate stubs with their plt entries short
2469 of figuring out the GOT pointer value used in the stub. */
2470 if (!is_nonpic_glink_stub (abfd
, glink
,
2471 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
2474 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2475 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
2478 size
= count
* sizeof (asymbol
);
2479 p
= relplt
->relocation
;
2480 for (i
= 0; i
< count
; i
++, p
++)
2482 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
2484 size
+= sizeof ("+0x") - 1 + 8;
2487 size
+= sizeof (asymbol
) + sizeof ("__glink");
2490 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
2492 s
= *ret
= bfd_malloc (size
);
2496 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
2497 p
= relplt
->relocation
;
2498 for (i
= 0; i
< count
; i
++, p
++)
2502 *s
= **p
->sym_ptr_ptr
;
2503 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2504 we are defining a symbol, ensure one of them is set. */
2505 if ((s
->flags
& BSF_LOCAL
) == 0)
2506 s
->flags
|= BSF_GLOBAL
;
2507 s
->flags
|= BSF_SYNTHETIC
;
2509 s
->value
= stub_vma
- glink
->vma
;
2512 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
2513 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
2517 memcpy (names
, "+0x", sizeof ("+0x") - 1);
2518 names
+= sizeof ("+0x") - 1;
2519 bfd_sprintf_vma (abfd
, names
, p
->addend
);
2520 names
+= strlen (names
);
2522 memcpy (names
, "@plt", sizeof ("@plt"));
2523 names
+= sizeof ("@plt");
2528 /* Add a symbol at the start of the glink branch table. */
2529 memset (s
, 0, sizeof *s
);
2531 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2533 s
->value
= glink_vma
- glink
->vma
;
2535 memcpy (names
, "__glink", sizeof ("__glink"));
2536 names
+= sizeof ("__glink");
2542 /* Add a symbol for the glink PLT resolver. */
2543 memset (s
, 0, sizeof *s
);
2545 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2547 s
->value
= resolv_vma
- glink
->vma
;
2549 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2550 names
+= sizeof ("__glink_PLTresolve");
2558 /* The following functions are specific to the ELF linker, while
2559 functions above are used generally. They appear in this file more
2560 or less in the order in which they are called. eg.
2561 ppc_elf_check_relocs is called early in the link process,
2562 ppc_elf_finish_dynamic_sections is one of the last functions
2565 /* Track PLT entries needed for a given symbol. We might need more
2566 than one glink entry per symbol when generating a pic binary. */
2569 struct plt_entry
*next
;
2571 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2572 This field stores the offset into .got2 used to initialise the
2573 GOT pointer reg. It will always be at least 32768. (Current
2574 gcc always uses an offset of 32768, but ld -r will pack .got2
2575 sections together resulting in larger offsets). */
2578 /* The .got2 section. */
2581 /* PLT refcount or offset. */
2584 bfd_signed_vma refcount
;
2588 /* .glink stub offset. */
2589 bfd_vma glink_offset
;
2592 /* Of those relocs that might be copied as dynamic relocs, this function
2593 selects those that must be copied when linking a shared library,
2594 even when the symbol is local. */
2597 must_be_dyn_reloc (struct bfd_link_info
*info
,
2598 enum elf_ppc_reloc_type r_type
)
2607 case R_PPC_REL14_BRTAKEN
:
2608 case R_PPC_REL14_BRNTAKEN
:
2614 case R_PPC_TPREL16_LO
:
2615 case R_PPC_TPREL16_HI
:
2616 case R_PPC_TPREL16_HA
:
2617 return !info
->executable
;
2621 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2622 copying dynamic variables from a shared lib into an app's dynbss
2623 section, and instead use a dynamic relocation to point into the
2625 #define ELIMINATE_COPY_RELOCS 1
2627 /* PPC ELF linker hash entry. */
2629 struct ppc_elf_link_hash_entry
2631 struct elf_link_hash_entry elf
;
2633 /* If this symbol is used in the linker created sections, the processor
2634 specific backend uses this field to map the field into the offset
2635 from the beginning of the section. */
2636 elf_linker_section_pointers_t
*linker_section_pointer
;
2638 /* Track dynamic relocs copied for this symbol. */
2639 struct elf_dyn_relocs
*dyn_relocs
;
2641 /* Contexts in which symbol is used in the GOT (or TOC).
2642 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2643 corresponding relocs are encountered during check_relocs.
2644 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2645 indicate the corresponding GOT entry type is not needed. */
2646 #define TLS_GD 1 /* GD reloc. */
2647 #define TLS_LD 2 /* LD reloc. */
2648 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2649 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2650 #define TLS_TLS 16 /* Any TLS reloc. */
2651 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2652 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2655 /* Nonzero if we have seen a small data relocation referring to this
2657 unsigned char has_sda_refs
;
2660 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2662 /* PPC ELF linker hash table. */
2664 struct ppc_elf_link_hash_table
2666 struct elf_link_hash_table elf
;
2668 /* Short-cuts to get to dynamic linker sections. */
2680 elf_linker_section_t sdata
[2];
2683 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2686 /* The .got.plt section (VxWorks only)*/
2689 /* Shortcut to __tls_get_addr. */
2690 struct elf_link_hash_entry
*tls_get_addr
;
2692 /* The bfd that forced an old-style PLT. */
2695 /* TLS local dynamic got entry handling. */
2697 bfd_signed_vma refcount
;
2701 /* Offset of branch table to PltResolve function in glink. */
2702 bfd_vma glink_pltresolve
;
2704 /* Size of reserved GOT entries. */
2705 unsigned int got_header_size
;
2706 /* Non-zero if allocating the header left a gap. */
2707 unsigned int got_gap
;
2709 /* The type of PLT we have chosen to use. */
2710 enum ppc_elf_plt_type plt_type
;
2712 /* Set if we should emit symbols for stubs. */
2713 unsigned int emit_stub_syms
:1;
2715 /* Set if __tls_get_addr optimization should not be done. */
2716 unsigned int no_tls_get_addr_opt
:1;
2718 /* True if the target system is VxWorks. */
2719 unsigned int is_vxworks
:1;
2721 /* The size of PLT entries. */
2723 /* The distance between adjacent PLT slots. */
2725 /* The size of the first PLT entry. */
2726 int plt_initial_entry_size
;
2728 /* Small local sym cache. */
2729 struct sym_cache sym_cache
;
2732 /* Rename some of the generic section flags to better document how they
2735 /* Nonzero if this section has TLS related relocations. */
2736 #define has_tls_reloc sec_flg0
2738 /* Nonzero if this section has a call to __tls_get_addr. */
2739 #define has_tls_get_addr_call sec_flg1
2741 /* Get the PPC ELF linker hash table from a link_info structure. */
2743 #define ppc_elf_hash_table(p) \
2744 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2745 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2747 /* Create an entry in a PPC ELF linker hash table. */
2749 static struct bfd_hash_entry
*
2750 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2751 struct bfd_hash_table
*table
,
2754 /* Allocate the structure if it has not already been allocated by a
2758 entry
= bfd_hash_allocate (table
,
2759 sizeof (struct ppc_elf_link_hash_entry
));
2764 /* Call the allocation method of the superclass. */
2765 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2768 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2769 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2770 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2771 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
2777 /* Create a PPC ELF linker hash table. */
2779 static struct bfd_link_hash_table
*
2780 ppc_elf_link_hash_table_create (bfd
*abfd
)
2782 struct ppc_elf_link_hash_table
*ret
;
2784 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2788 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2789 ppc_elf_link_hash_newfunc
,
2790 sizeof (struct ppc_elf_link_hash_entry
),
2797 ret
->elf
.init_plt_refcount
.refcount
= 0;
2798 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2799 ret
->elf
.init_plt_offset
.offset
= 0;
2800 ret
->elf
.init_plt_offset
.glist
= NULL
;
2802 ret
->sdata
[0].name
= ".sdata";
2803 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2804 ret
->sdata
[0].bss_name
= ".sbss";
2806 ret
->sdata
[1].name
= ".sdata2";
2807 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2808 ret
->sdata
[1].bss_name
= ".sbss2";
2810 ret
->plt_entry_size
= 12;
2811 ret
->plt_slot_size
= 8;
2812 ret
->plt_initial_entry_size
= 72;
2814 return &ret
->elf
.root
;
2817 /* Create .got and the related sections. */
2820 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2822 struct ppc_elf_link_hash_table
*htab
;
2826 if (!_bfd_elf_create_got_section (abfd
, info
))
2829 htab
= ppc_elf_hash_table (info
);
2830 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2834 if (htab
->is_vxworks
)
2836 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2842 /* The powerpc .got has a blrl instruction in it. Mark it
2844 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2845 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2846 if (!bfd_set_section_flags (abfd
, s
, flags
))
2850 htab
->relgot
= bfd_get_section_by_name (abfd
, ".rela.got");
2858 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
2860 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2864 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
2865 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2866 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
2869 || !bfd_set_section_alignment (abfd
, s
, 4))
2872 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
2873 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
2876 || !bfd_set_section_alignment (abfd
, s
, 4))
2879 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2880 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2881 s
= bfd_make_section_with_flags (abfd
, ".rela.iplt", flags
);
2884 || ! bfd_set_section_alignment (abfd
, s
, 2))
2889 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2890 to output sections (just like _bfd_elf_create_dynamic_sections has
2891 to create .dynbss and .rela.bss). */
2894 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2896 struct ppc_elf_link_hash_table
*htab
;
2900 htab
= ppc_elf_hash_table (info
);
2902 if (htab
->got
== NULL
2903 && !ppc_elf_create_got (abfd
, info
))
2906 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2909 if (htab
->glink
== NULL
2910 && !ppc_elf_create_glink (abfd
, info
))
2913 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2914 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2915 SEC_ALLOC
| SEC_LINKER_CREATED
);
2922 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2923 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2924 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2925 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2928 || ! bfd_set_section_alignment (abfd
, s
, 2))
2932 if (htab
->is_vxworks
2933 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2936 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2937 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2941 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2942 if (htab
->plt_type
== PLT_VXWORKS
)
2943 /* The VxWorks PLT is a loaded section with contents. */
2944 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
2945 return bfd_set_section_flags (abfd
, s
, flags
);
2948 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2951 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2952 struct elf_link_hash_entry
*dir
,
2953 struct elf_link_hash_entry
*ind
)
2955 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2957 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2958 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2960 if (eind
->dyn_relocs
!= NULL
)
2962 if (edir
->dyn_relocs
!= NULL
)
2964 struct elf_dyn_relocs
**pp
;
2965 struct elf_dyn_relocs
*p
;
2967 /* Add reloc counts against the indirect sym to the direct sym
2968 list. Merge any entries against the same section. */
2969 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2971 struct elf_dyn_relocs
*q
;
2973 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2974 if (q
->sec
== p
->sec
)
2976 q
->pc_count
+= p
->pc_count
;
2977 q
->count
+= p
->count
;
2984 *pp
= edir
->dyn_relocs
;
2987 edir
->dyn_relocs
= eind
->dyn_relocs
;
2988 eind
->dyn_relocs
= NULL
;
2991 edir
->tls_mask
|= eind
->tls_mask
;
2992 edir
->has_sda_refs
|= eind
->has_sda_refs
;
2994 /* If called to transfer flags for a weakdef during processing
2995 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2996 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2997 if (!(ELIMINATE_COPY_RELOCS
2998 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
2999 && edir
->elf
.dynamic_adjusted
))
3000 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3002 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3003 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3004 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3005 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3006 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3008 /* If we were called to copy over info for a weak sym, that's all. */
3009 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3012 /* Copy over the GOT refcount entries that we may have already seen to
3013 the symbol which just became indirect. */
3014 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3015 eind
->elf
.got
.refcount
= 0;
3017 /* And plt entries. */
3018 if (eind
->elf
.plt
.plist
!= NULL
)
3020 if (edir
->elf
.plt
.plist
!= NULL
)
3022 struct plt_entry
**entp
;
3023 struct plt_entry
*ent
;
3025 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3027 struct plt_entry
*dent
;
3029 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3030 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3032 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3039 *entp
= edir
->elf
.plt
.plist
;
3042 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3043 eind
->elf
.plt
.plist
= NULL
;
3046 if (eind
->elf
.dynindx
!= -1)
3048 if (edir
->elf
.dynindx
!= -1)
3049 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3050 edir
->elf
.dynstr_index
);
3051 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3052 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3053 eind
->elf
.dynindx
= -1;
3054 eind
->elf
.dynstr_index
= 0;
3058 /* Hook called by the linker routine which adds symbols from an object
3059 file. We use it to put .comm items in .sbss, and not .bss. */
3062 ppc_elf_add_symbol_hook (bfd
*abfd
,
3063 struct bfd_link_info
*info
,
3064 Elf_Internal_Sym
*sym
,
3065 const char **namep ATTRIBUTE_UNUSED
,
3066 flagword
*flagsp ATTRIBUTE_UNUSED
,
3070 if (sym
->st_shndx
== SHN_COMMON
3071 && !info
->relocatable
3072 && is_ppc_elf (info
->output_bfd
)
3073 && sym
->st_size
<= elf_gp_size (abfd
))
3075 /* Common symbols less than or equal to -G nn bytes are automatically
3077 struct ppc_elf_link_hash_table
*htab
;
3079 htab
= ppc_elf_hash_table (info
);
3080 if (htab
->sbss
== NULL
)
3082 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3084 if (!htab
->elf
.dynobj
)
3085 htab
->elf
.dynobj
= abfd
;
3087 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3090 if (htab
->sbss
== NULL
)
3095 *valp
= sym
->st_size
;
3098 if ((abfd
->flags
& DYNAMIC
) == 0
3099 && (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3100 || ELF_ST_BIND (sym
->st_info
) == STB_GNU_UNIQUE
))
3101 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
3107 create_sdata_sym (struct bfd_link_info
*info
, elf_linker_section_t
*lsect
)
3109 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3111 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
3113 if (lsect
->sym
== NULL
)
3115 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
3116 lsect
->sym
->non_elf
= 0;
3117 lsect
->sym
->ref_regular
= 1;
3118 _bfd_elf_link_hash_hide_symbol (info
, lsect
->sym
, TRUE
);
3122 /* Create a special linker section. */
3125 ppc_elf_create_linker_section (bfd
*abfd
,
3126 struct bfd_link_info
*info
,
3128 elf_linker_section_t
*lsect
)
3130 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3133 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3134 | SEC_LINKER_CREATED
);
3136 /* Record the first bfd that needs the special sections. */
3137 if (!htab
->elf
.dynobj
)
3138 htab
->elf
.dynobj
= abfd
;
3140 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3144 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
3148 return create_sdata_sym (info
, lsect
);
3151 /* Find a linker generated pointer with a given addend and type. */
3153 static elf_linker_section_pointers_t
*
3154 elf_find_pointer_linker_section
3155 (elf_linker_section_pointers_t
*linker_pointers
,
3157 elf_linker_section_t
*lsect
)
3159 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3160 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3161 return linker_pointers
;
3166 /* Allocate a pointer to live in a linker created section. */
3169 elf_create_pointer_linker_section (bfd
*abfd
,
3170 elf_linker_section_t
*lsect
,
3171 struct elf_link_hash_entry
*h
,
3172 const Elf_Internal_Rela
*rel
)
3174 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3175 elf_linker_section_pointers_t
*linker_section_ptr
;
3176 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3179 BFD_ASSERT (lsect
!= NULL
);
3181 /* Is this a global symbol? */
3184 struct ppc_elf_link_hash_entry
*eh
;
3186 /* Has this symbol already been allocated? If so, our work is done. */
3187 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3188 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3193 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3197 BFD_ASSERT (is_ppc_elf (abfd
));
3199 /* Allocation of a pointer to a local symbol. */
3200 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3202 /* Allocate a table to hold the local symbols if first time. */
3205 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3208 amt
*= sizeof (elf_linker_section_pointers_t
*);
3209 ptr
= bfd_zalloc (abfd
, amt
);
3214 elf_local_ptr_offsets (abfd
) = ptr
;
3217 /* Has this symbol already been allocated? If so, our work is done. */
3218 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3223 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3226 /* Allocate space for a pointer in the linker section, and allocate
3227 a new pointer record from internal memory. */
3228 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3229 amt
= sizeof (elf_linker_section_pointers_t
);
3230 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3232 if (!linker_section_ptr
)
3235 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3236 linker_section_ptr
->addend
= rel
->r_addend
;
3237 linker_section_ptr
->lsect
= lsect
;
3238 *ptr_linker_section_ptr
= linker_section_ptr
;
3240 linker_section_ptr
->offset
= lsect
->section
->size
;
3241 lsect
->section
->size
+= 4;
3245 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3246 lsect
->name
, (long) linker_section_ptr
->offset
,
3247 (long) lsect
->section
->size
);
3253 static struct plt_entry
**
3254 update_local_sym_info (bfd
*abfd
,
3255 Elf_Internal_Shdr
*symtab_hdr
,
3256 unsigned long r_symndx
,
3259 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3260 struct plt_entry
**local_plt
;
3261 char *local_got_tls_masks
;
3263 if (local_got_refcounts
== NULL
)
3265 bfd_size_type size
= symtab_hdr
->sh_info
;
3267 size
*= (sizeof (*local_got_refcounts
)
3268 + sizeof (*local_plt
)
3269 + sizeof (*local_got_tls_masks
));
3270 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3271 if (local_got_refcounts
== NULL
)
3273 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3276 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3277 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3278 local_got_tls_masks
[r_symndx
] |= tls_type
;
3279 if (tls_type
!= PLT_IFUNC
)
3280 local_got_refcounts
[r_symndx
] += 1;
3281 return local_plt
+ r_symndx
;
3285 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3286 asection
*sec
, bfd_vma addend
)
3288 struct plt_entry
*ent
;
3292 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3293 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3297 bfd_size_type amt
= sizeof (*ent
);
3298 ent
= bfd_alloc (abfd
, amt
);
3303 ent
->addend
= addend
;
3304 ent
->plt
.refcount
= 0;
3307 ent
->plt
.refcount
+= 1;
3311 static struct plt_entry
*
3312 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3314 struct plt_entry
*ent
;
3318 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3319 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3325 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3327 return (r_type
== R_PPC_PLTREL24
3328 || r_type
== R_PPC_LOCAL24PC
3329 || r_type
== R_PPC_REL24
3330 || r_type
== R_PPC_REL14
3331 || r_type
== R_PPC_REL14_BRTAKEN
3332 || r_type
== R_PPC_REL14_BRNTAKEN
3333 || r_type
== R_PPC_ADDR24
3334 || r_type
== R_PPC_ADDR14
3335 || r_type
== R_PPC_ADDR14_BRTAKEN
3336 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3340 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3342 (*_bfd_error_handler
)
3343 (_("%B: relocation %s cannot be used when making a shared object"),
3345 ppc_elf_howto_table
[r_type
]->name
);
3346 bfd_set_error (bfd_error_bad_value
);
3349 /* Look through the relocs for a section during the first phase, and
3350 allocate space in the global offset table or procedure linkage
3354 ppc_elf_check_relocs (bfd
*abfd
,
3355 struct bfd_link_info
*info
,
3357 const Elf_Internal_Rela
*relocs
)
3359 struct ppc_elf_link_hash_table
*htab
;
3360 Elf_Internal_Shdr
*symtab_hdr
;
3361 struct elf_link_hash_entry
**sym_hashes
;
3362 const Elf_Internal_Rela
*rel
;
3363 const Elf_Internal_Rela
*rel_end
;
3364 asection
*got2
, *sreloc
;
3365 struct elf_link_hash_entry
*tga
;
3367 if (info
->relocatable
)
3370 /* Don't do anything special with non-loaded, non-alloced sections.
3371 In particular, any relocs in such sections should not affect GOT
3372 and PLT reference counting (ie. we don't allow them to create GOT
3373 or PLT entries), there's no possibility or desire to optimize TLS
3374 relocs, and there's not much point in propagating relocs to shared
3375 libs that the dynamic linker won't relocate. */
3376 if ((sec
->flags
& SEC_ALLOC
) == 0)
3380 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3384 BFD_ASSERT (is_ppc_elf (abfd
));
3386 /* Initialize howto table if not already done. */
3387 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3388 ppc_elf_howto_init ();
3390 htab
= ppc_elf_hash_table (info
);
3391 if (htab
->glink
== NULL
)
3393 if (htab
->elf
.dynobj
== NULL
)
3394 htab
->elf
.dynobj
= abfd
;
3395 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3398 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3399 FALSE
, FALSE
, TRUE
);
3400 symtab_hdr
= &elf_symtab_hdr (abfd
);
3401 sym_hashes
= elf_sym_hashes (abfd
);
3402 got2
= bfd_get_section_by_name (abfd
, ".got2");
3405 rel_end
= relocs
+ sec
->reloc_count
;
3406 for (rel
= relocs
; rel
< rel_end
; rel
++)
3408 unsigned long r_symndx
;
3409 enum elf_ppc_reloc_type r_type
;
3410 struct elf_link_hash_entry
*h
;
3413 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3414 if (r_symndx
< symtab_hdr
->sh_info
)
3418 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3419 while (h
->root
.type
== bfd_link_hash_indirect
3420 || h
->root
.type
== bfd_link_hash_warning
)
3421 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3424 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3425 This shows up in particular in an R_PPC_ADDR32 in the eabi
3428 && htab
->got
== NULL
3429 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3431 if (htab
->elf
.dynobj
== NULL
)
3432 htab
->elf
.dynobj
= abfd
;
3433 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3435 BFD_ASSERT (h
== htab
->elf
.hgot
);
3439 r_type
= ELF32_R_TYPE (rel
->r_info
);
3440 if (h
== NULL
&& !htab
->is_vxworks
)
3442 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3447 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
3449 || is_branch_reloc (r_type
)))
3451 struct plt_entry
**ifunc
;
3454 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3459 /* STT_GNU_IFUNC symbols must have a PLT entry;
3460 In a non-pie executable even when there are
3463 if (r_type
== R_PPC_PLTREL24
)
3465 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3467 addend
= rel
->r_addend
;
3469 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
3474 if (!htab
->is_vxworks
3475 && is_branch_reloc (r_type
)
3480 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
3481 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
3482 /* We have a new-style __tls_get_addr call with a marker
3486 /* Mark this section as having an old-style call. */
3487 sec
->has_tls_get_addr_call
= 1;
3494 /* These special tls relocs tie a call to __tls_get_addr with
3495 its parameter symbol. */
3498 case R_PPC_GOT_TLSLD16
:
3499 case R_PPC_GOT_TLSLD16_LO
:
3500 case R_PPC_GOT_TLSLD16_HI
:
3501 case R_PPC_GOT_TLSLD16_HA
:
3502 tls_type
= TLS_TLS
| TLS_LD
;
3505 case R_PPC_GOT_TLSGD16
:
3506 case R_PPC_GOT_TLSGD16_LO
:
3507 case R_PPC_GOT_TLSGD16_HI
:
3508 case R_PPC_GOT_TLSGD16_HA
:
3509 tls_type
= TLS_TLS
| TLS_GD
;
3512 case R_PPC_GOT_TPREL16
:
3513 case R_PPC_GOT_TPREL16_LO
:
3514 case R_PPC_GOT_TPREL16_HI
:
3515 case R_PPC_GOT_TPREL16_HA
:
3516 if (!info
->executable
)
3517 info
->flags
|= DF_STATIC_TLS
;
3518 tls_type
= TLS_TLS
| TLS_TPREL
;
3521 case R_PPC_GOT_DTPREL16
:
3522 case R_PPC_GOT_DTPREL16_LO
:
3523 case R_PPC_GOT_DTPREL16_HI
:
3524 case R_PPC_GOT_DTPREL16_HA
:
3525 tls_type
= TLS_TLS
| TLS_DTPREL
;
3527 sec
->has_tls_reloc
= 1;
3530 /* GOT16 relocations */
3532 case R_PPC_GOT16_LO
:
3533 case R_PPC_GOT16_HI
:
3534 case R_PPC_GOT16_HA
:
3535 /* This symbol requires a global offset table entry. */
3536 if (htab
->got
== NULL
)
3538 if (htab
->elf
.dynobj
== NULL
)
3539 htab
->elf
.dynobj
= abfd
;
3540 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3545 h
->got
.refcount
+= 1;
3546 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3549 /* This is a global offset table entry for a local symbol. */
3550 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3553 /* We may also need a plt entry if the symbol turns out to be
3555 if (h
!= NULL
&& !info
->shared
)
3557 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
3562 /* Indirect .sdata relocation. */
3563 case R_PPC_EMB_SDAI16
:
3566 bad_shared_reloc (abfd
, r_type
);
3569 if (htab
->sdata
[0].section
== NULL
3570 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3573 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3578 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3579 h
->non_got_ref
= TRUE
;
3583 /* Indirect .sdata2 relocation. */
3584 case R_PPC_EMB_SDA2I16
:
3587 bad_shared_reloc (abfd
, r_type
);
3590 if (htab
->sdata
[1].section
== NULL
3591 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3594 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3599 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3600 h
->non_got_ref
= TRUE
;
3604 case R_PPC_SDAREL16
:
3605 if (htab
->sdata
[0].sym
== NULL
3606 && !create_sdata_sym (info
, &htab
->sdata
[0]))
3610 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3611 h
->non_got_ref
= TRUE
;
3615 case R_PPC_EMB_SDA2REL
:
3618 bad_shared_reloc (abfd
, r_type
);
3621 if (htab
->sdata
[1].sym
== NULL
3622 && !create_sdata_sym (info
, &htab
->sdata
[1]))
3626 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3627 h
->non_got_ref
= TRUE
;
3631 case R_PPC_EMB_SDA21
:
3632 case R_PPC_EMB_RELSDA
:
3635 bad_shared_reloc (abfd
, r_type
);
3638 if (htab
->sdata
[0].sym
== NULL
3639 && !create_sdata_sym (info
, &htab
->sdata
[0]))
3641 if (htab
->sdata
[1].sym
== NULL
3642 && !create_sdata_sym (info
, &htab
->sdata
[1]))
3646 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3647 h
->non_got_ref
= TRUE
;
3651 case R_PPC_EMB_NADDR32
:
3652 case R_PPC_EMB_NADDR16
:
3653 case R_PPC_EMB_NADDR16_LO
:
3654 case R_PPC_EMB_NADDR16_HI
:
3655 case R_PPC_EMB_NADDR16_HA
:
3658 bad_shared_reloc (abfd
, r_type
);
3662 h
->non_got_ref
= TRUE
;
3665 case R_PPC_PLTREL24
:
3670 case R_PPC_PLTREL32
:
3671 case R_PPC_PLT16_LO
:
3672 case R_PPC_PLT16_HI
:
3673 case R_PPC_PLT16_HA
:
3675 fprintf (stderr
, "Reloc requires a PLT entry\n");
3677 /* This symbol requires a procedure linkage table entry. We
3678 actually build the entry in finish_dynamic_symbol,
3679 because this might be a case of linking PIC code without
3680 linking in any dynamic objects, in which case we don't
3681 need to generate a procedure linkage table after all. */
3685 /* It does not make sense to have a procedure linkage
3686 table entry for a local symbol. */
3687 info
->callbacks
->einfo (_("%H: %s reloc against local symbol\n"),
3688 abfd
, sec
, rel
->r_offset
,
3689 ppc_elf_howto_table
[r_type
]->name
);
3690 bfd_set_error (bfd_error_bad_value
);
3697 if (r_type
== R_PPC_PLTREL24
)
3699 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3701 addend
= rel
->r_addend
;
3704 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
3709 /* The following relocations don't need to propagate the
3710 relocation if linking a shared object since they are
3711 section relative. */
3713 case R_PPC_SECTOFF_LO
:
3714 case R_PPC_SECTOFF_HI
:
3715 case R_PPC_SECTOFF_HA
:
3716 case R_PPC_DTPREL16
:
3717 case R_PPC_DTPREL16_LO
:
3718 case R_PPC_DTPREL16_HI
:
3719 case R_PPC_DTPREL16_HA
:
3724 case R_PPC_REL16_LO
:
3725 case R_PPC_REL16_HI
:
3726 case R_PPC_REL16_HA
:
3727 ppc_elf_tdata (abfd
)->has_rel16
= 1;
3730 /* These are just markers. */
3732 case R_PPC_EMB_MRKREF
:
3736 case R_PPC_RELAX_PLT
:
3737 case R_PPC_RELAX_PLTREL24
:
3740 /* These should only appear in dynamic objects. */
3742 case R_PPC_GLOB_DAT
:
3743 case R_PPC_JMP_SLOT
:
3744 case R_PPC_RELATIVE
:
3745 case R_PPC_IRELATIVE
:
3748 /* These aren't handled yet. We'll report an error later. */
3750 case R_PPC_EMB_RELSEC16
:
3751 case R_PPC_EMB_RELST_LO
:
3752 case R_PPC_EMB_RELST_HI
:
3753 case R_PPC_EMB_RELST_HA
:
3754 case R_PPC_EMB_BIT_FLD
:
3757 /* This refers only to functions defined in the shared library. */
3758 case R_PPC_LOCAL24PC
:
3759 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
3761 htab
->plt_type
= PLT_OLD
;
3762 htab
->old_bfd
= abfd
;
3766 /* This relocation describes the C++ object vtable hierarchy.
3767 Reconstruct it for later use during GC. */
3768 case R_PPC_GNU_VTINHERIT
:
3769 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3773 /* This relocation describes which C++ vtable entries are actually
3774 used. Record for later use during GC. */
3775 case R_PPC_GNU_VTENTRY
:
3776 BFD_ASSERT (h
!= NULL
);
3778 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3782 /* We shouldn't really be seeing these. */
3785 case R_PPC_TPREL16_LO
:
3786 case R_PPC_TPREL16_HI
:
3787 case R_PPC_TPREL16_HA
:
3788 if (!info
->executable
)
3789 info
->flags
|= DF_STATIC_TLS
;
3793 case R_PPC_DTPMOD32
:
3794 case R_PPC_DTPREL32
:
3800 && (sec
->flags
& SEC_CODE
) != 0
3802 && htab
->plt_type
== PLT_UNSET
)
3804 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3805 the start of a function, which assembles to a REL32
3806 reference to .got2. If we detect one of these, then
3807 force the old PLT layout because the linker cannot
3808 reliably deduce the GOT pointer value needed for
3811 Elf_Internal_Sym
*isym
;
3813 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3818 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3821 htab
->plt_type
= PLT_OLD
;
3822 htab
->old_bfd
= abfd
;
3825 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3831 case R_PPC_ADDR16_LO
:
3832 case R_PPC_ADDR16_HI
:
3833 case R_PPC_ADDR16_HA
:
3836 if (h
!= NULL
&& !info
->shared
)
3838 /* We may need a plt entry if the symbol turns out to be
3839 a function defined in a dynamic object. */
3840 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
3843 /* We may need a copy reloc too. */
3845 h
->pointer_equality_needed
= 1;
3851 case R_PPC_REL14_BRTAKEN
:
3852 case R_PPC_REL14_BRNTAKEN
:
3855 if (h
== htab
->elf
.hgot
)
3857 if (htab
->plt_type
== PLT_UNSET
)
3859 htab
->plt_type
= PLT_OLD
;
3860 htab
->old_bfd
= abfd
;
3868 case R_PPC_ADDR14_BRTAKEN
:
3869 case R_PPC_ADDR14_BRNTAKEN
:
3870 if (h
!= NULL
&& !info
->shared
)
3872 /* We may need a plt entry if the symbol turns out to be
3873 a function defined in a dynamic object. */
3875 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
3881 /* If we are creating a shared library, and this is a reloc
3882 against a global symbol, or a non PC relative reloc
3883 against a local symbol, then we need to copy the reloc
3884 into the shared library. However, if we are linking with
3885 -Bsymbolic, we do not need to copy a reloc against a
3886 global symbol which is defined in an object we are
3887 including in the link (i.e., DEF_REGULAR is set). At
3888 this point we have not seen all the input files, so it is
3889 possible that DEF_REGULAR is not set now but will be set
3890 later (it is never cleared). In case of a weak definition,
3891 DEF_REGULAR may be cleared later by a strong definition in
3892 a shared library. We account for that possibility below by
3893 storing information in the dyn_relocs field of the hash
3894 table entry. A similar situation occurs when creating
3895 shared libraries and symbol visibility changes render the
3898 If on the other hand, we are creating an executable, we
3899 may need to keep relocations for symbols satisfied by a
3900 dynamic library if we manage to avoid copy relocs for the
3903 && (must_be_dyn_reloc (info
, r_type
)
3905 && (! info
->symbolic
3906 || h
->root
.type
== bfd_link_hash_defweak
3907 || !h
->def_regular
))))
3908 || (ELIMINATE_COPY_RELOCS
3911 && (h
->root
.type
== bfd_link_hash_defweak
3912 || !h
->def_regular
)))
3914 struct elf_dyn_relocs
*p
;
3915 struct elf_dyn_relocs
**rel_head
;
3919 "ppc_elf_check_relocs needs to "
3920 "create relocation for %s\n",
3921 (h
&& h
->root
.root
.string
3922 ? h
->root
.root
.string
: "<unknown>"));
3926 if (htab
->elf
.dynobj
== NULL
)
3927 htab
->elf
.dynobj
= abfd
;
3929 sreloc
= _bfd_elf_make_dynamic_reloc_section
3930 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3936 /* If this is a global symbol, we count the number of
3937 relocations we need for this symbol. */
3940 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3944 /* Track dynamic relocs needed for local syms too.
3945 We really need local syms available to do this
3949 Elf_Internal_Sym
*isym
;
3951 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3956 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3960 vpp
= &elf_section_data (s
)->local_dynrel
;
3961 rel_head
= (struct elf_dyn_relocs
**) vpp
;
3965 if (p
== NULL
|| p
->sec
!= sec
)
3967 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3970 p
->next
= *rel_head
;
3978 if (!must_be_dyn_reloc (info
, r_type
))
3990 /* Merge object attributes from IBFD into OBFD. Raise an error if
3991 there are conflicting attributes. */
3993 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
3995 obj_attribute
*in_attr
, *in_attrs
;
3996 obj_attribute
*out_attr
, *out_attrs
;
3998 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4000 /* This is the first object. Copy the attributes. */
4001 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4003 /* Use the Tag_null value to indicate the attributes have been
4005 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4010 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4011 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4013 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4014 non-conflicting ones. */
4015 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4016 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4017 if (in_attr
->i
!= out_attr
->i
)
4020 if (out_attr
->i
== 0)
4021 out_attr
->i
= in_attr
->i
;
4022 else if (in_attr
->i
== 0)
4024 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4026 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4027 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4029 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4031 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4033 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4035 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4037 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4039 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4041 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4042 else if (in_attr
->i
> 3)
4044 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4048 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4052 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4053 merge non-conflicting ones. */
4054 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4055 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4056 if (in_attr
->i
!= out_attr
->i
)
4058 const char *in_abi
= NULL
, *out_abi
= NULL
;
4062 case 1: in_abi
= "generic"; break;
4063 case 2: in_abi
= "AltiVec"; break;
4064 case 3: in_abi
= "SPE"; break;
4067 switch (out_attr
->i
)
4069 case 1: out_abi
= "generic"; break;
4070 case 2: out_abi
= "AltiVec"; break;
4071 case 3: out_abi
= "SPE"; break;
4075 if (out_attr
->i
== 0)
4076 out_attr
->i
= in_attr
->i
;
4077 else if (in_attr
->i
== 0)
4079 /* For now, allow generic to transition to AltiVec or SPE
4080 without a warning. If GCC marked files with their stack
4081 alignment and used don't-care markings for files which are
4082 not affected by the vector ABI, we could warn about this
4084 else if (out_attr
->i
== 1)
4085 out_attr
->i
= in_attr
->i
;
4086 else if (in_attr
->i
== 1)
4088 else if (in_abi
== NULL
)
4090 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4092 else if (out_abi
== NULL
)
4094 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4098 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4099 ibfd
, obfd
, in_abi
, out_abi
);
4102 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4103 and merge non-conflicting ones. */
4104 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4105 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4106 if (in_attr
->i
!= out_attr
->i
)
4109 if (out_attr
->i
== 0)
4110 out_attr
->i
= in_attr
->i
;
4111 else if (in_attr
->i
== 0)
4113 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4115 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4116 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4118 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4119 else if (in_attr
->i
> 2)
4121 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4125 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4129 /* Merge Tag_compatibility attributes and any common GNU ones. */
4130 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4135 /* Merge backend specific data from an object file to the output
4136 object file when linking. */
4139 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4145 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4148 /* Check if we have the same endianess. */
4149 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4152 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4155 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4156 old_flags
= elf_elfheader (obfd
)->e_flags
;
4157 if (!elf_flags_init (obfd
))
4159 /* First call, no flags set. */
4160 elf_flags_init (obfd
) = TRUE
;
4161 elf_elfheader (obfd
)->e_flags
= new_flags
;
4164 /* Compatible flags are ok. */
4165 else if (new_flags
== old_flags
)
4168 /* Incompatible flags. */
4171 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4172 to be linked with either. */
4174 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4175 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4178 (*_bfd_error_handler
)
4179 (_("%B: compiled with -mrelocatable and linked with "
4180 "modules compiled normally"), ibfd
);
4182 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4183 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4186 (*_bfd_error_handler
)
4187 (_("%B: compiled normally and linked with "
4188 "modules compiled with -mrelocatable"), ibfd
);
4191 /* The output is -mrelocatable-lib iff both the input files are. */
4192 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4193 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4195 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4196 but each input file is either -mrelocatable or -mrelocatable-lib. */
4197 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4198 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4199 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4200 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4202 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4203 any module uses it. */
4204 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4206 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4207 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4209 /* Warn about any other mismatches. */
4210 if (new_flags
!= old_flags
)
4213 (*_bfd_error_handler
)
4214 (_("%B: uses different e_flags (0x%lx) fields "
4215 "than previous modules (0x%lx)"),
4216 ibfd
, (long) new_flags
, (long) old_flags
);
4221 bfd_set_error (bfd_error_bad_value
);
4229 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4230 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4232 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4233 struct bfd_link_info
*info
,
4234 enum ppc_elf_plt_type plt_style
,
4237 struct ppc_elf_link_hash_table
*htab
;
4240 htab
= ppc_elf_hash_table (info
);
4242 htab
->emit_stub_syms
= emit_stub_syms
;
4244 if (htab
->plt_type
== PLT_UNSET
)
4246 if (plt_style
== PLT_OLD
)
4247 htab
->plt_type
= PLT_OLD
;
4251 enum ppc_elf_plt_type plt_type
= plt_style
;
4253 /* Look through the reloc flags left by ppc_elf_check_relocs.
4254 Use the old style bss plt if a file makes plt calls
4255 without using the new relocs, and if ld isn't given
4256 --secure-plt and we never see REL16 relocs. */
4257 if (plt_type
== PLT_UNSET
)
4259 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
4260 if (is_ppc_elf (ibfd
))
4262 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4264 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4267 htab
->old_bfd
= ibfd
;
4271 htab
->plt_type
= plt_type
;
4274 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
4275 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
4277 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4279 if (htab
->plt_type
== PLT_NEW
)
4281 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4282 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4284 /* The new PLT is a loaded section. */
4285 if (htab
->plt
!= NULL
4286 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4289 /* The new GOT is not executable. */
4290 if (htab
->got
!= NULL
4291 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4296 /* Stop an unused .glink section from affecting .text alignment. */
4297 if (htab
->glink
!= NULL
4298 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4301 return htab
->plt_type
== PLT_NEW
;
4304 /* Return the section that should be marked against GC for a given
4308 ppc_elf_gc_mark_hook (asection
*sec
,
4309 struct bfd_link_info
*info
,
4310 Elf_Internal_Rela
*rel
,
4311 struct elf_link_hash_entry
*h
,
4312 Elf_Internal_Sym
*sym
)
4315 switch (ELF32_R_TYPE (rel
->r_info
))
4317 case R_PPC_GNU_VTINHERIT
:
4318 case R_PPC_GNU_VTENTRY
:
4322 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4325 /* Update the got, plt and dynamic reloc reference counts for the
4326 section being removed. */
4329 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4330 struct bfd_link_info
*info
,
4332 const Elf_Internal_Rela
*relocs
)
4334 struct ppc_elf_link_hash_table
*htab
;
4335 Elf_Internal_Shdr
*symtab_hdr
;
4336 struct elf_link_hash_entry
**sym_hashes
;
4337 bfd_signed_vma
*local_got_refcounts
;
4338 const Elf_Internal_Rela
*rel
, *relend
;
4341 if (info
->relocatable
)
4344 if ((sec
->flags
& SEC_ALLOC
) == 0)
4347 elf_section_data (sec
)->local_dynrel
= NULL
;
4349 htab
= ppc_elf_hash_table (info
);
4350 symtab_hdr
= &elf_symtab_hdr (abfd
);
4351 sym_hashes
= elf_sym_hashes (abfd
);
4352 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4353 got2
= bfd_get_section_by_name (abfd
, ".got2");
4355 relend
= relocs
+ sec
->reloc_count
;
4356 for (rel
= relocs
; rel
< relend
; rel
++)
4358 unsigned long r_symndx
;
4359 enum elf_ppc_reloc_type r_type
;
4360 struct elf_link_hash_entry
*h
= NULL
;
4362 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4363 if (r_symndx
>= symtab_hdr
->sh_info
)
4365 struct elf_dyn_relocs
**pp
, *p
;
4366 struct ppc_elf_link_hash_entry
*eh
;
4368 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4369 while (h
->root
.type
== bfd_link_hash_indirect
4370 || h
->root
.type
== bfd_link_hash_warning
)
4371 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4372 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4374 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4377 /* Everything must go for SEC. */
4383 r_type
= ELF32_R_TYPE (rel
->r_info
);
4384 if (!htab
->is_vxworks
4386 && local_got_refcounts
!= NULL
4388 || is_branch_reloc (r_type
)))
4390 struct plt_entry
**local_plt
= (struct plt_entry
**)
4391 (local_got_refcounts
+ symtab_hdr
->sh_info
);
4392 char *local_got_tls_masks
= (char *)
4393 (local_plt
+ symtab_hdr
->sh_info
);
4394 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
4396 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
4398 struct plt_entry
*ent
;
4400 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
4401 addend
= rel
->r_addend
;
4402 ent
= find_plt_ent (ifunc
, got2
, addend
);
4403 if (ent
->plt
.refcount
> 0)
4404 ent
->plt
.refcount
-= 1;
4411 case R_PPC_GOT_TLSLD16
:
4412 case R_PPC_GOT_TLSLD16_LO
:
4413 case R_PPC_GOT_TLSLD16_HI
:
4414 case R_PPC_GOT_TLSLD16_HA
:
4415 case R_PPC_GOT_TLSGD16
:
4416 case R_PPC_GOT_TLSGD16_LO
:
4417 case R_PPC_GOT_TLSGD16_HI
:
4418 case R_PPC_GOT_TLSGD16_HA
:
4419 case R_PPC_GOT_TPREL16
:
4420 case R_PPC_GOT_TPREL16_LO
:
4421 case R_PPC_GOT_TPREL16_HI
:
4422 case R_PPC_GOT_TPREL16_HA
:
4423 case R_PPC_GOT_DTPREL16
:
4424 case R_PPC_GOT_DTPREL16_LO
:
4425 case R_PPC_GOT_DTPREL16_HI
:
4426 case R_PPC_GOT_DTPREL16_HA
:
4428 case R_PPC_GOT16_LO
:
4429 case R_PPC_GOT16_HI
:
4430 case R_PPC_GOT16_HA
:
4433 if (h
->got
.refcount
> 0)
4437 struct plt_entry
*ent
;
4439 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
4440 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4441 ent
->plt
.refcount
-= 1;
4444 else if (local_got_refcounts
!= NULL
)
4446 if (local_got_refcounts
[r_symndx
] > 0)
4447 local_got_refcounts
[r_symndx
]--;
4453 case R_PPC_REL14_BRTAKEN
:
4454 case R_PPC_REL14_BRNTAKEN
:
4456 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4463 case R_PPC_ADDR16_LO
:
4464 case R_PPC_ADDR16_HI
:
4465 case R_PPC_ADDR16_HA
:
4467 case R_PPC_ADDR14_BRTAKEN
:
4468 case R_PPC_ADDR14_BRNTAKEN
:
4475 case R_PPC_PLTREL24
:
4476 case R_PPC_PLTREL32
:
4477 case R_PPC_PLT16_LO
:
4478 case R_PPC_PLT16_HI
:
4479 case R_PPC_PLT16_HA
:
4483 struct plt_entry
*ent
;
4485 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
4486 addend
= rel
->r_addend
;
4487 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
4488 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4489 ent
->plt
.refcount
-= 1;
4500 /* Set plt output section type, htab->tls_get_addr, and call the
4501 generic ELF tls_setup function. */
4504 ppc_elf_tls_setup (bfd
*obfd
,
4505 struct bfd_link_info
*info
,
4506 int no_tls_get_addr_opt
)
4508 struct ppc_elf_link_hash_table
*htab
;
4510 htab
= ppc_elf_hash_table (info
);
4511 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4512 FALSE
, FALSE
, TRUE
);
4513 if (!no_tls_get_addr_opt
)
4515 struct elf_link_hash_entry
*opt
, *tga
;
4516 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
4517 FALSE
, FALSE
, TRUE
);
4519 && (opt
->root
.type
== bfd_link_hash_defined
4520 || opt
->root
.type
== bfd_link_hash_defweak
))
4522 /* If glibc supports an optimized __tls_get_addr call stub,
4523 signalled by the presence of __tls_get_addr_opt, and we'll
4524 be calling __tls_get_addr via a plt call stub, then
4525 make __tls_get_addr point to __tls_get_addr_opt. */
4526 tga
= htab
->tls_get_addr
;
4527 if (htab
->elf
.dynamic_sections_created
4529 && (tga
->type
== STT_FUNC
4531 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
4532 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
4533 && tga
->root
.type
== bfd_link_hash_undefweak
)))
4535 struct plt_entry
*ent
;
4536 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4537 if (ent
->plt
.refcount
> 0)
4541 tga
->root
.type
= bfd_link_hash_indirect
;
4542 tga
->root
.u
.i
.link
= &opt
->root
;
4543 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
4544 if (opt
->dynindx
!= -1)
4546 /* Use __tls_get_addr_opt in dynamic relocations. */
4548 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4550 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
4553 htab
->tls_get_addr
= opt
;
4558 no_tls_get_addr_opt
= TRUE
;
4560 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
4561 if (htab
->plt_type
== PLT_NEW
4562 && htab
->plt
!= NULL
4563 && htab
->plt
->output_section
!= NULL
)
4565 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
4566 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
4569 return _bfd_elf_tls_setup (obfd
, info
);
4572 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4576 branch_reloc_hash_match (const bfd
*ibfd
,
4577 const Elf_Internal_Rela
*rel
,
4578 const struct elf_link_hash_entry
*hash
)
4580 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4581 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
4582 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
4584 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
4586 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
4587 struct elf_link_hash_entry
*h
;
4589 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4590 while (h
->root
.type
== bfd_link_hash_indirect
4591 || h
->root
.type
== bfd_link_hash_warning
)
4592 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4599 /* Run through all the TLS relocs looking for optimization
4603 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4604 struct bfd_link_info
*info
)
4608 struct ppc_elf_link_hash_table
*htab
;
4611 if (info
->relocatable
|| !info
->executable
)
4614 htab
= ppc_elf_hash_table (info
);
4618 /* Make two passes through the relocs. First time check that tls
4619 relocs involved in setting up a tls_get_addr call are indeed
4620 followed by such a call. If they are not, don't do any tls
4621 optimization. On the second pass twiddle tls_mask flags to
4622 notify relocate_section that optimization can be done, and
4623 adjust got and plt refcounts. */
4624 for (pass
= 0; pass
< 2; ++pass
)
4625 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4627 Elf_Internal_Sym
*locsyms
= NULL
;
4628 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4629 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
4631 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4632 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4634 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4635 int expecting_tls_get_addr
= 0;
4637 /* Read the relocations. */
4638 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4640 if (relstart
== NULL
)
4643 relend
= relstart
+ sec
->reloc_count
;
4644 for (rel
= relstart
; rel
< relend
; rel
++)
4646 enum elf_ppc_reloc_type r_type
;
4647 unsigned long r_symndx
;
4648 struct elf_link_hash_entry
*h
= NULL
;
4650 char tls_set
, tls_clear
;
4651 bfd_boolean is_local
;
4652 bfd_signed_vma
*got_count
;
4654 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4655 if (r_symndx
>= symtab_hdr
->sh_info
)
4657 struct elf_link_hash_entry
**sym_hashes
;
4659 sym_hashes
= elf_sym_hashes (ibfd
);
4660 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4661 while (h
->root
.type
== bfd_link_hash_indirect
4662 || h
->root
.type
== bfd_link_hash_warning
)
4663 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4671 r_type
= ELF32_R_TYPE (rel
->r_info
);
4672 /* If this section has old-style __tls_get_addr calls
4673 without marker relocs, then check that each
4674 __tls_get_addr call reloc is preceded by a reloc
4675 that conceivably belongs to the __tls_get_addr arg
4676 setup insn. If we don't find matching arg setup
4677 relocs, don't do any tls optimization. */
4679 && sec
->has_tls_get_addr_call
4681 && h
== htab
->tls_get_addr
4682 && !expecting_tls_get_addr
4683 && is_branch_reloc (r_type
))
4685 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
4686 "TLS optimization disabled\n",
4687 ibfd
, sec
, rel
->r_offset
);
4688 if (elf_section_data (sec
)->relocs
!= relstart
)
4693 expecting_tls_get_addr
= 0;
4696 case R_PPC_GOT_TLSLD16
:
4697 case R_PPC_GOT_TLSLD16_LO
:
4698 expecting_tls_get_addr
= 1;
4701 case R_PPC_GOT_TLSLD16_HI
:
4702 case R_PPC_GOT_TLSLD16_HA
:
4703 /* These relocs should never be against a symbol
4704 defined in a shared lib. Leave them alone if
4705 that turns out to be the case. */
4714 case R_PPC_GOT_TLSGD16
:
4715 case R_PPC_GOT_TLSGD16_LO
:
4716 expecting_tls_get_addr
= 1;
4719 case R_PPC_GOT_TLSGD16_HI
:
4720 case R_PPC_GOT_TLSGD16_HA
:
4726 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4730 case R_PPC_GOT_TPREL16
:
4731 case R_PPC_GOT_TPREL16_LO
:
4732 case R_PPC_GOT_TPREL16_HI
:
4733 case R_PPC_GOT_TPREL16_HA
:
4738 tls_clear
= TLS_TPREL
;
4746 expecting_tls_get_addr
= 2;
4757 if (!expecting_tls_get_addr
4758 || (expecting_tls_get_addr
== 1
4759 && !sec
->has_tls_get_addr_call
))
4762 if (rel
+ 1 < relend
4763 && branch_reloc_hash_match (ibfd
, rel
+ 1,
4764 htab
->tls_get_addr
))
4767 /* Uh oh, we didn't find the expected call. We
4768 could just mark this symbol to exclude it
4769 from tls optimization but it's safer to skip
4770 the entire optimization. */
4771 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
4772 "TLS optimization disabled\n"),
4773 ibfd
, sec
, rel
->r_offset
);
4774 if (elf_section_data (sec
)->relocs
!= relstart
)
4779 if (expecting_tls_get_addr
)
4781 struct plt_entry
*ent
;
4785 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
4786 addend
= rel
[1].r_addend
;
4787 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
4789 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4790 ent
->plt
.refcount
-= 1;
4792 if (expecting_tls_get_addr
== 2)
4798 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4799 got_count
= &h
->got
.refcount
;
4803 bfd_signed_vma
*lgot_refs
;
4804 struct plt_entry
**local_plt
;
4807 if (locsyms
== NULL
)
4809 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4810 if (locsyms
== NULL
)
4811 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4812 symtab_hdr
->sh_info
,
4813 0, NULL
, NULL
, NULL
);
4814 if (locsyms
== NULL
)
4816 if (elf_section_data (sec
)->relocs
!= relstart
)
4821 lgot_refs
= elf_local_got_refcounts (ibfd
);
4822 if (lgot_refs
== NULL
)
4824 local_plt
= (struct plt_entry
**)
4825 (lgot_refs
+ symtab_hdr
->sh_info
);
4826 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
4827 tls_mask
= &lgot_masks
[r_symndx
];
4828 got_count
= &lgot_refs
[r_symndx
];
4833 /* We managed to get rid of a got entry. */
4838 *tls_mask
|= tls_set
;
4839 *tls_mask
&= ~tls_clear
;
4842 if (elf_section_data (sec
)->relocs
!= relstart
)
4847 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4849 if (!info
->keep_memory
)
4852 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4858 /* Return true if we have dynamic relocs that apply to read-only sections. */
4861 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
4863 struct elf_dyn_relocs
*p
;
4865 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4867 asection
*s
= p
->sec
->output_section
;
4870 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4871 == (SEC_READONLY
| SEC_ALLOC
)))
4877 /* Adjust a symbol defined by a dynamic object and referenced by a
4878 regular object. The current definition is in some section of the
4879 dynamic object, but we're not including those sections. We have to
4880 change the definition to something the rest of the link can
4884 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4885 struct elf_link_hash_entry
*h
)
4887 struct ppc_elf_link_hash_table
*htab
;
4891 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4892 h
->root
.root
.string
);
4895 /* Make sure we know what is going on here. */
4896 htab
= ppc_elf_hash_table (info
);
4897 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4899 || h
->type
== STT_GNU_IFUNC
4900 || h
->u
.weakdef
!= NULL
4903 && !h
->def_regular
)));
4905 /* Deal with function syms. */
4906 if (h
->type
== STT_FUNC
4907 || h
->type
== STT_GNU_IFUNC
4910 /* Clear procedure linkage table information for any symbol that
4911 won't need a .plt entry. */
4912 struct plt_entry
*ent
;
4913 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4914 if (ent
->plt
.refcount
> 0)
4917 || (h
->type
!= STT_GNU_IFUNC
4918 && (SYMBOL_CALLS_LOCAL (info
, h
)
4919 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4920 && h
->root
.type
== bfd_link_hash_undefweak
))))
4922 /* A PLT entry is not required/allowed when:
4924 1. We are not using ld.so; because then the PLT entry
4925 can't be set up, so we can't use one. In this case,
4926 ppc_elf_adjust_dynamic_symbol won't even be called.
4928 2. GC has rendered the entry unused.
4930 3. We know for certain that a call to this symbol
4931 will go to this object, or will remain undefined. */
4932 h
->plt
.plist
= NULL
;
4937 /* After adjust_dynamic_symbol, non_got_ref set in the
4938 non-shared case means that we have allocated space in
4939 .dynbss for the symbol and thus dyn_relocs for this
4940 symbol should be discarded.
4941 If we get here we know we are making a PLT entry for this
4942 symbol, and in an executable we'd normally resolve
4943 relocations against this symbol to the PLT entry. Allow
4944 dynamic relocs if the reference is weak, and the dynamic
4945 relocs will not cause text relocation. */
4946 if (!h
->ref_regular_nonweak
4948 && h
->type
!= STT_GNU_IFUNC
4949 && !htab
->is_vxworks
4950 && !ppc_elf_hash_entry (h
)->has_sda_refs
4951 && !readonly_dynrelocs (h
))
4957 h
->plt
.plist
= NULL
;
4959 /* If this is a weak symbol, and there is a real definition, the
4960 processor independent code will have arranged for us to see the
4961 real definition first, and we can just use the same value. */
4962 if (h
->u
.weakdef
!= NULL
)
4964 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4965 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4966 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4967 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4968 if (ELIMINATE_COPY_RELOCS
)
4969 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4973 /* This is a reference to a symbol defined by a dynamic object which
4974 is not a function. */
4976 /* If we are creating a shared library, we must presume that the
4977 only references to the symbol are via the global offset table.
4978 For such cases we need not do anything here; the relocations will
4979 be handled correctly by relocate_section. */
4983 /* If there are no references to this symbol that do not use the
4984 GOT, we don't need to generate a copy reloc. */
4985 if (!h
->non_got_ref
)
4988 /* If we didn't find any dynamic relocs in read-only sections, then
4989 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4990 We can't do this if there are any small data relocations. This
4991 doesn't work on VxWorks, where we can not have dynamic
4992 relocations (other than copy and jump slot relocations) in an
4994 if (ELIMINATE_COPY_RELOCS
4995 && !ppc_elf_hash_entry (h
)->has_sda_refs
4996 && !htab
->is_vxworks
4998 && !readonly_dynrelocs (h
))
5006 info
->callbacks
->einfo (_("dynamic variable `%s' is zero size\n"),
5007 h
->root
.root
.string
);
5011 /* We must allocate the symbol in our .dynbss section, which will
5012 become part of the .bss section of the executable. There will be
5013 an entry for this symbol in the .dynsym section. The dynamic
5014 object will contain position independent code, so all references
5015 from the dynamic object to this symbol will go through the global
5016 offset table. The dynamic linker will use the .dynsym entry to
5017 determine the address it must put in the global offset table, so
5018 both the dynamic object and the regular object will refer to the
5019 same memory location for the variable.
5021 Of course, if the symbol is referenced using SDAREL relocs, we
5022 must instead allocate it in .sbss. */
5024 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5028 BFD_ASSERT (s
!= NULL
);
5030 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5031 copy the initial value out of the dynamic object and into the
5032 runtime process image. We need to remember the offset into the
5033 .rela.bss section we are going to use. */
5034 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5038 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5039 srel
= htab
->relsbss
;
5041 srel
= htab
->relbss
;
5042 BFD_ASSERT (srel
!= NULL
);
5043 srel
->size
+= sizeof (Elf32_External_Rela
);
5047 return _bfd_elf_adjust_dynamic_copy (h
, s
);
5050 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5051 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5052 specifying the addend on the plt relocation. For -fpic code, the sym
5053 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5054 xxxxxxxx.got2.plt_pic32.<callee>. */
5057 add_stub_sym (struct plt_entry
*ent
,
5058 struct elf_link_hash_entry
*h
,
5059 struct bfd_link_info
*info
)
5061 struct elf_link_hash_entry
*sh
;
5062 size_t len1
, len2
, len3
;
5065 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5068 stub
= ".plt_pic32.";
5070 stub
= ".plt_call32.";
5072 len1
= strlen (h
->root
.root
.string
);
5073 len2
= strlen (stub
);
5076 len3
= strlen (ent
->sec
->name
);
5077 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5080 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5082 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5083 memcpy (name
+ 8 + len3
, stub
, len2
);
5084 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5085 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5088 if (sh
->root
.type
== bfd_link_hash_new
)
5090 sh
->root
.type
= bfd_link_hash_defined
;
5091 sh
->root
.u
.def
.section
= htab
->glink
;
5092 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5093 sh
->ref_regular
= 1;
5094 sh
->def_regular
= 1;
5095 sh
->ref_regular_nonweak
= 1;
5096 sh
->forced_local
= 1;
5102 /* Allocate NEED contiguous space in .got, and return the offset.
5103 Handles allocation of the got header when crossing 32k. */
5106 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5109 unsigned int max_before_header
;
5111 if (htab
->plt_type
== PLT_VXWORKS
)
5113 where
= htab
->got
->size
;
5114 htab
->got
->size
+= need
;
5118 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5119 if (need
<= htab
->got_gap
)
5121 where
= max_before_header
- htab
->got_gap
;
5122 htab
->got_gap
-= need
;
5126 if (htab
->got
->size
+ need
> max_before_header
5127 && htab
->got
->size
<= max_before_header
)
5129 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5130 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5132 where
= htab
->got
->size
;
5133 htab
->got
->size
+= need
;
5139 /* Allocate space in associated reloc sections for dynamic relocs. */
5142 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5144 struct bfd_link_info
*info
= inf
;
5145 struct ppc_elf_link_hash_entry
*eh
;
5146 struct ppc_elf_link_hash_table
*htab
;
5147 struct elf_dyn_relocs
*p
;
5149 if (h
->root
.type
== bfd_link_hash_indirect
)
5152 if (h
->root
.type
== bfd_link_hash_warning
)
5153 /* When warning symbols are created, they **replace** the "real"
5154 entry in the hash table, thus we never get to see the real
5155 symbol in a hash traversal. So look at it now. */
5156 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5158 htab
= ppc_elf_hash_table (info
);
5159 if (htab
->elf
.dynamic_sections_created
5160 || h
->type
== STT_GNU_IFUNC
)
5162 struct plt_entry
*ent
;
5163 bfd_boolean doneone
= FALSE
;
5164 bfd_vma plt_offset
= 0, glink_offset
= 0;
5167 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5168 if (ent
->plt
.refcount
> 0)
5170 /* Make sure this symbol is output as a dynamic symbol. */
5171 if (h
->dynindx
== -1
5174 && htab
->elf
.dynamic_sections_created
)
5176 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5180 dyn
= htab
->elf
.dynamic_sections_created
;
5182 || h
->type
== STT_GNU_IFUNC
5183 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5185 asection
*s
= htab
->plt
;
5186 if (!dyn
|| h
->dynindx
== -1)
5189 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5193 plt_offset
= s
->size
;
5196 ent
->plt
.offset
= plt_offset
;
5199 if (!doneone
|| info
->shared
)
5201 glink_offset
= s
->size
;
5202 s
->size
+= GLINK_ENTRY_SIZE
;
5203 if (h
== htab
->tls_get_addr
5204 && !htab
->no_tls_get_addr_opt
)
5205 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5212 h
->root
.u
.def
.section
= s
;
5213 h
->root
.u
.def
.value
= glink_offset
;
5215 ent
->glink_offset
= glink_offset
;
5217 if (htab
->emit_stub_syms
5218 && !add_stub_sym (ent
, h
, info
))
5225 /* If this is the first .plt entry, make room
5226 for the special first entry. */
5228 s
->size
+= htab
->plt_initial_entry_size
;
5230 /* The PowerPC PLT is actually composed of two
5231 parts, the first part is 2 words (for a load
5232 and a jump), and then there is a remaining
5233 word available at the end. */
5234 plt_offset
= (htab
->plt_initial_entry_size
5235 + (htab
->plt_slot_size
5237 - htab
->plt_initial_entry_size
)
5238 / htab
->plt_entry_size
)));
5240 /* If this symbol is not defined in a regular
5241 file, and we are not generating a shared
5242 library, then set the symbol to this location
5243 in the .plt. This is to avoid text
5244 relocations, and is required to make
5245 function pointers compare as equal between
5246 the normal executable and the shared library. */
5251 h
->root
.u
.def
.section
= s
;
5252 h
->root
.u
.def
.value
= plt_offset
;
5255 /* Make room for this entry. */
5256 s
->size
+= htab
->plt_entry_size
;
5257 /* After the 8192nd entry, room for two entries
5259 if (htab
->plt_type
== PLT_OLD
5260 && (s
->size
- htab
->plt_initial_entry_size
)
5261 / htab
->plt_entry_size
5262 > PLT_NUM_SINGLE_ENTRIES
)
5263 s
->size
+= htab
->plt_entry_size
;
5265 ent
->plt
.offset
= plt_offset
;
5268 /* We also need to make an entry in the .rela.plt section. */
5271 if (!htab
->elf
.dynamic_sections_created
5272 || h
->dynindx
== -1)
5273 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5276 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
5278 if (htab
->plt_type
== PLT_VXWORKS
)
5280 /* Allocate space for the unloaded relocations. */
5282 && htab
->elf
.dynamic_sections_created
)
5285 == (bfd_vma
) htab
->plt_initial_entry_size
)
5287 htab
->srelplt2
->size
5288 += (sizeof (Elf32_External_Rela
)
5289 * VXWORKS_PLTRESOLVE_RELOCS
);
5292 htab
->srelplt2
->size
5293 += (sizeof (Elf32_External_Rela
)
5294 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
5297 /* Every PLT entry has an associated GOT entry in
5299 htab
->sgotplt
->size
+= 4;
5306 ent
->plt
.offset
= (bfd_vma
) -1;
5309 ent
->plt
.offset
= (bfd_vma
) -1;
5313 h
->plt
.plist
= NULL
;
5319 h
->plt
.plist
= NULL
;
5323 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5324 if (eh
->elf
.got
.refcount
> 0)
5329 /* Make sure this symbol is output as a dynamic symbol. */
5330 if (eh
->elf
.dynindx
== -1
5331 && !eh
->elf
.forced_local
5332 && eh
->elf
.type
!= STT_GNU_IFUNC
5333 && htab
->elf
.dynamic_sections_created
)
5335 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5340 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5342 if ((eh
->tls_mask
& TLS_LD
) != 0)
5344 if (!eh
->elf
.def_dynamic
)
5345 /* We'll just use htab->tlsld_got.offset. This should
5346 always be the case. It's a little odd if we have
5347 a local dynamic reloc against a non-local symbol. */
5348 htab
->tlsld_got
.refcount
+= 1;
5352 if ((eh
->tls_mask
& TLS_GD
) != 0)
5354 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5356 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5362 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5365 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5366 dyn
= htab
->elf
.dynamic_sections_created
;
5368 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5369 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5370 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5372 asection
*rsec
= htab
->relgot
;
5373 /* All the entries we allocated need relocs.
5374 Except LD only needs one. */
5375 if ((eh
->tls_mask
& TLS_LD
) != 0
5376 && eh
->elf
.def_dynamic
)
5378 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5383 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5385 if (eh
->dyn_relocs
== NULL
5386 || !htab
->elf
.dynamic_sections_created
)
5389 /* In the shared -Bsymbolic case, discard space allocated for
5390 dynamic pc-relative relocs against symbols which turn out to be
5391 defined in regular objects. For the normal shared case, discard
5392 space for relocs that have become local due to symbol visibility
5397 /* Relocs that use pc_count are those that appear on a call insn,
5398 or certain REL relocs (see must_be_dyn_reloc) that can be
5399 generated via assembly. We want calls to protected symbols to
5400 resolve directly to the function rather than going via the plt.
5401 If people want function pointer comparisons to work as expected
5402 then they should avoid writing weird assembly. */
5403 if (SYMBOL_CALLS_LOCAL (info
, h
))
5405 struct elf_dyn_relocs
**pp
;
5407 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5409 p
->count
-= p
->pc_count
;
5418 if (htab
->is_vxworks
)
5420 struct elf_dyn_relocs
**pp
;
5422 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5424 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5431 /* Discard relocs on undefined symbols that must be local. */
5432 if (eh
->dyn_relocs
!= NULL
5433 && h
->root
.type
== bfd_link_hash_undefined
5434 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
5435 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
5436 eh
->dyn_relocs
= NULL
;
5438 /* Also discard relocs on undefined weak syms with non-default
5440 if (eh
->dyn_relocs
!= NULL
5441 && h
->root
.type
== bfd_link_hash_undefweak
)
5443 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5444 eh
->dyn_relocs
= NULL
;
5446 /* Make sure undefined weak symbols are output as a dynamic
5448 else if (h
->dynindx
== -1
5452 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5457 else if (ELIMINATE_COPY_RELOCS
)
5459 /* For the non-shared case, discard space for relocs against
5460 symbols which turn out to need copy relocs or are not
5466 /* Make sure this symbol is output as a dynamic symbol.
5467 Undefined weak syms won't yet be marked as dynamic. */
5468 if (h
->dynindx
== -1
5469 && !h
->forced_local
)
5471 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5475 /* If that succeeded, we know we'll be keeping all the
5477 if (h
->dynindx
!= -1)
5481 eh
->dyn_relocs
= NULL
;
5486 /* Finally, allocate space. */
5487 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5489 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5490 if (!htab
->elf
.dynamic_sections_created
)
5491 sreloc
= htab
->reliplt
;
5492 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5498 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5499 read-only sections. */
5502 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
5504 if (h
->root
.type
== bfd_link_hash_indirect
)
5507 if (h
->root
.type
== bfd_link_hash_warning
)
5508 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5510 if (readonly_dynrelocs (h
))
5512 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
5514 /* Not an error, just cut short the traversal. */
5520 /* Set the sizes of the dynamic sections. */
5523 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5524 struct bfd_link_info
*info
)
5526 struct ppc_elf_link_hash_table
*htab
;
5532 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
5535 htab
= ppc_elf_hash_table (info
);
5536 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
5538 if (elf_hash_table (info
)->dynamic_sections_created
)
5540 /* Set the contents of the .interp section to the interpreter. */
5541 if (info
->executable
)
5543 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
5544 BFD_ASSERT (s
!= NULL
);
5545 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5546 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5550 if (htab
->plt_type
== PLT_OLD
)
5551 htab
->got_header_size
= 16;
5552 else if (htab
->plt_type
== PLT_NEW
)
5553 htab
->got_header_size
= 12;
5555 /* Set up .got offsets for local syms, and space for local dynamic
5557 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5559 bfd_signed_vma
*local_got
;
5560 bfd_signed_vma
*end_local_got
;
5561 struct plt_entry
**local_plt
;
5562 struct plt_entry
**end_local_plt
;
5564 bfd_size_type locsymcount
;
5565 Elf_Internal_Shdr
*symtab_hdr
;
5567 if (!is_ppc_elf (ibfd
))
5570 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
5572 struct elf_dyn_relocs
*p
;
5574 for (p
= ((struct elf_dyn_relocs
*)
5575 elf_section_data (s
)->local_dynrel
);
5579 if (!bfd_is_abs_section (p
->sec
)
5580 && bfd_is_abs_section (p
->sec
->output_section
))
5582 /* Input section has been discarded, either because
5583 it is a copy of a linkonce section or due to
5584 linker script /DISCARD/, so we'll be discarding
5587 else if (htab
->is_vxworks
5588 && strcmp (p
->sec
->output_section
->name
,
5591 /* Relocations in vxworks .tls_vars sections are
5592 handled specially by the loader. */
5594 else if (p
->count
!= 0)
5596 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5597 if (!htab
->elf
.dynamic_sections_created
)
5598 sreloc
= htab
->reliplt
;
5599 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5600 if ((p
->sec
->output_section
->flags
5601 & (SEC_READONLY
| SEC_ALLOC
))
5602 == (SEC_READONLY
| SEC_ALLOC
))
5603 info
->flags
|= DF_TEXTREL
;
5608 local_got
= elf_local_got_refcounts (ibfd
);
5612 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5613 locsymcount
= symtab_hdr
->sh_info
;
5614 end_local_got
= local_got
+ locsymcount
;
5615 local_plt
= (struct plt_entry
**) end_local_got
;
5616 end_local_plt
= local_plt
+ locsymcount
;
5617 lgot_masks
= (char *) end_local_plt
;
5619 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
5622 unsigned int need
= 0;
5623 if ((*lgot_masks
& TLS_TLS
) != 0)
5625 if ((*lgot_masks
& TLS_GD
) != 0)
5627 if ((*lgot_masks
& TLS_LD
) != 0)
5628 htab
->tlsld_got
.refcount
+= 1;
5629 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5631 if ((*lgot_masks
& TLS_DTPREL
) != 0)
5637 *local_got
= (bfd_vma
) -1;
5640 *local_got
= allocate_got (htab
, need
);
5642 htab
->relgot
->size
+= (need
5643 * (sizeof (Elf32_External_Rela
) / 4));
5647 *local_got
= (bfd_vma
) -1;
5649 if (htab
->is_vxworks
)
5652 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5653 for (; local_plt
< end_local_plt
; ++local_plt
)
5655 struct plt_entry
*ent
;
5656 bfd_boolean doneone
= FALSE
;
5657 bfd_vma plt_offset
= 0, glink_offset
= 0;
5659 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
5660 if (ent
->plt
.refcount
> 0)
5666 plt_offset
= s
->size
;
5669 ent
->plt
.offset
= plt_offset
;
5672 if (!doneone
|| info
->shared
)
5674 glink_offset
= s
->size
;
5675 s
->size
+= GLINK_ENTRY_SIZE
;
5677 ent
->glink_offset
= glink_offset
;
5681 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5686 ent
->plt
.offset
= (bfd_vma
) -1;
5690 /* Allocate space for global sym dynamic relocs. */
5691 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
5693 if (htab
->tlsld_got
.refcount
> 0)
5695 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
5697 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
5700 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
5702 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
5704 unsigned int g_o_t
= 32768;
5706 /* If we haven't allocated the header, do so now. When we get here,
5707 for old plt/got the got size will be 0 to 32764 (not allocated),
5708 or 32780 to 65536 (header allocated). For new plt/got, the
5709 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5710 if (htab
->got
->size
<= 32768)
5712 g_o_t
= htab
->got
->size
;
5713 if (htab
->plt_type
== PLT_OLD
)
5715 htab
->got
->size
+= htab
->got_header_size
;
5718 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
5722 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
5724 && !(sda
->root
.type
== bfd_link_hash_defined
5725 || sda
->root
.type
== bfd_link_hash_defweak
))
5727 sda
->root
.type
= bfd_link_hash_defined
;
5728 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
5729 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
5733 if (htab
->glink
!= NULL
5734 && htab
->glink
->size
!= 0
5735 && htab
->elf
.dynamic_sections_created
)
5737 htab
->glink_pltresolve
= htab
->glink
->size
;
5738 /* Space for the branch table. */
5739 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
5740 /* Pad out to align the start of PLTresolve. */
5741 htab
->glink
->size
+= -htab
->glink
->size
& 15;
5742 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
5744 if (htab
->emit_stub_syms
)
5746 struct elf_link_hash_entry
*sh
;
5747 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
5748 TRUE
, FALSE
, FALSE
);
5751 if (sh
->root
.type
== bfd_link_hash_new
)
5753 sh
->root
.type
= bfd_link_hash_defined
;
5754 sh
->root
.u
.def
.section
= htab
->glink
;
5755 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
5756 sh
->ref_regular
= 1;
5757 sh
->def_regular
= 1;
5758 sh
->ref_regular_nonweak
= 1;
5759 sh
->forced_local
= 1;
5762 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
5763 TRUE
, FALSE
, FALSE
);
5766 if (sh
->root
.type
== bfd_link_hash_new
)
5768 sh
->root
.type
= bfd_link_hash_defined
;
5769 sh
->root
.u
.def
.section
= htab
->glink
;
5770 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
5771 sh
->ref_regular
= 1;
5772 sh
->def_regular
= 1;
5773 sh
->ref_regular_nonweak
= 1;
5774 sh
->forced_local
= 1;
5780 /* We've now determined the sizes of the various dynamic sections.
5781 Allocate memory for them. */
5783 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5785 bfd_boolean strip_section
= TRUE
;
5787 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5793 /* We'd like to strip these sections if they aren't needed, but if
5794 we've exported dynamic symbols from them we must leave them.
5795 It's too late to tell BFD to get rid of the symbols. */
5796 if (htab
->elf
.hplt
!= NULL
)
5797 strip_section
= FALSE
;
5798 /* Strip this section if we don't need it; see the
5801 else if (s
== htab
->iplt
5803 || s
== htab
->sgotplt
5805 || s
== htab
->dynbss
5806 || s
== htab
->dynsbss
5807 || s
== htab
->sdata
[0].section
5808 || s
== htab
->sdata
[1].section
)
5810 /* Strip these too. */
5812 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5816 /* Remember whether there are any relocation sections. */
5819 /* We use the reloc_count field as a counter if we need
5820 to copy relocs into the output file. */
5826 /* It's not one of our sections, so don't allocate space. */
5830 if (s
->size
== 0 && strip_section
)
5832 /* If we don't need this section, strip it from the
5833 output file. This is mostly to handle .rela.bss and
5834 .rela.plt. We must create both sections in
5835 create_dynamic_sections, because they must be created
5836 before the linker maps input sections to output
5837 sections. The linker does that before
5838 adjust_dynamic_symbol is called, and it is that
5839 function which decides whether anything needs to go
5840 into these sections. */
5841 s
->flags
|= SEC_EXCLUDE
;
5845 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5848 /* Allocate memory for the section contents. */
5849 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5850 if (s
->contents
== NULL
)
5854 if (htab
->elf
.dynamic_sections_created
)
5856 /* Add some entries to the .dynamic section. We fill in the
5857 values later, in ppc_elf_finish_dynamic_sections, but we
5858 must add the entries now so that we get the correct size for
5859 the .dynamic section. The DT_DEBUG entry is filled in by the
5860 dynamic linker and used by the debugger. */
5861 #define add_dynamic_entry(TAG, VAL) \
5862 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5864 if (info
->executable
)
5866 if (!add_dynamic_entry (DT_DEBUG
, 0))
5870 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5872 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5873 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5874 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5875 || !add_dynamic_entry (DT_JMPREL
, 0))
5879 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5881 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5883 if (!htab
->no_tls_get_addr_opt
5884 && htab
->tls_get_addr
!= NULL
5885 && htab
->tls_get_addr
->plt
.plist
!= NULL
5886 && !add_dynamic_entry (DT_PPC_TLSOPT
, 0))
5892 if (!add_dynamic_entry (DT_RELA
, 0)
5893 || !add_dynamic_entry (DT_RELASZ
, 0)
5894 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5898 /* If any dynamic relocs apply to a read-only section, then we
5899 need a DT_TEXTREL entry. */
5900 if ((info
->flags
& DF_TEXTREL
) == 0)
5901 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
5904 if ((info
->flags
& DF_TEXTREL
) != 0)
5906 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5909 if (htab
->is_vxworks
5910 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
5913 #undef add_dynamic_entry
5918 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5921 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
5923 if (h
->plt
.plist
!= NULL
5925 && (!h
->pointer_equality_needed
5926 || !h
->ref_regular_nonweak
))
5929 return _bfd_elf_hash_symbol (h
);
5932 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5934 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5935 used for some functions that are allowed to break the ABI). */
5936 static const int shared_stub_entry
[] =
5938 0x7c0802a6, /* mflr 0 */
5939 0x429f0005, /* bcl 20, 31, .Lxxx */
5940 0x7d8802a6, /* mflr 12 */
5941 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5942 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5943 0x7c0803a6, /* mtlr 0 */
5944 0x7d8903a6, /* mtctr 12 */
5945 0x4e800420, /* bctr */
5948 static const int stub_entry
[] =
5950 0x3d800000, /* lis 12,xxx@ha */
5951 0x398c0000, /* addi 12,12,xxx@l */
5952 0x7d8903a6, /* mtctr 12 */
5953 0x4e800420, /* bctr */
5957 ppc_elf_relax_section (bfd
*abfd
,
5959 struct bfd_link_info
*link_info
,
5964 struct one_fixup
*next
;
5966 /* Final link, can use the symbol offset. For a
5967 relocatable link we use the symbol's index. */
5972 Elf_Internal_Shdr
*symtab_hdr
;
5973 bfd_byte
*contents
= NULL
;
5974 Elf_Internal_Sym
*isymbuf
= NULL
;
5975 Elf_Internal_Rela
*internal_relocs
= NULL
;
5976 Elf_Internal_Rela
*irel
, *irelend
;
5977 struct one_fixup
*fixups
= NULL
;
5978 unsigned changes
= 0;
5979 struct ppc_elf_link_hash_table
*htab
;
5980 bfd_size_type trampoff
;
5982 bfd_boolean maybe_pasted
;
5986 /* Nothing to do if there are no relocations, and no need to do
5987 anything with non-alloc or non-code sections. */
5988 if ((isec
->flags
& SEC_ALLOC
) == 0
5989 || (isec
->flags
& SEC_CODE
) == 0
5990 || (isec
->flags
& SEC_RELOC
) == 0
5991 || isec
->reloc_count
== 0)
5994 /* We cannot represent the required PIC relocs in the output, so don't
5995 do anything. The linker doesn't support mixing -shared and -r
5997 if (link_info
->relocatable
&& link_info
->shared
)
6000 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
6001 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6002 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6003 /* Space for a branch around any trampolines. */
6007 symtab_hdr
= &elf_symtab_hdr (abfd
);
6009 /* Get a copy of the native relocations. */
6010 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6011 link_info
->keep_memory
);
6012 if (internal_relocs
== NULL
)
6015 htab
= ppc_elf_hash_table (link_info
);
6016 got2
= bfd_get_section_by_name (abfd
, ".got2");
6018 irelend
= internal_relocs
+ isec
->reloc_count
;
6019 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6021 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6024 struct one_fixup
*f
;
6025 size_t insn_offset
= 0;
6026 bfd_vma max_branch_offset
, val
;
6029 struct elf_link_hash_entry
*h
;
6030 struct plt_entry
**plist
;
6031 unsigned char sym_type
;
6036 case R_PPC_LOCAL24PC
:
6037 case R_PPC_PLTREL24
:
6038 max_branch_offset
= 1 << 25;
6042 case R_PPC_REL14_BRTAKEN
:
6043 case R_PPC_REL14_BRNTAKEN
:
6044 max_branch_offset
= 1 << 15;
6051 /* Get the value of the symbol referred to by the reloc. */
6053 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6055 /* A local symbol. */
6056 Elf_Internal_Sym
*isym
;
6058 /* Read this BFD's local symbols. */
6059 if (isymbuf
== NULL
)
6061 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6062 if (isymbuf
== NULL
)
6063 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6064 symtab_hdr
->sh_info
, 0,
6069 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6070 if (isym
->st_shndx
== SHN_UNDEF
)
6071 tsec
= bfd_und_section_ptr
;
6072 else if (isym
->st_shndx
== SHN_ABS
)
6073 tsec
= bfd_abs_section_ptr
;
6074 else if (isym
->st_shndx
== SHN_COMMON
)
6075 tsec
= bfd_com_section_ptr
;
6077 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6079 toff
= isym
->st_value
;
6080 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6084 /* Global symbol handling. */
6087 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6088 h
= elf_sym_hashes (abfd
)[indx
];
6090 while (h
->root
.type
== bfd_link_hash_indirect
6091 || h
->root
.type
== bfd_link_hash_warning
)
6092 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6094 if (h
->root
.type
== bfd_link_hash_defined
6095 || h
->root
.type
== bfd_link_hash_defweak
)
6097 tsec
= h
->root
.u
.def
.section
;
6098 toff
= h
->root
.u
.def
.value
;
6100 else if (h
->root
.type
== bfd_link_hash_undefined
6101 || h
->root
.type
== bfd_link_hash_undefweak
)
6103 tsec
= bfd_und_section_ptr
;
6104 toff
= link_info
->relocatable
? indx
: 0;
6112 /* The condition here under which we call find_plt_ent must
6113 match that in relocate_section. If we call find_plt_ent here
6114 but not in relocate_section, or vice versa, then the branch
6115 destination used here may be incorrect. */
6119 /* We know is_branch_reloc (r_type) is true. */
6120 if (h
->type
== STT_GNU_IFUNC
6121 || r_type
== R_PPC_PLTREL24
)
6122 plist
= &h
->plt
.plist
;
6124 else if (sym_type
== STT_GNU_IFUNC
6125 && elf_local_got_offsets (abfd
) != NULL
)
6127 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6128 struct plt_entry
**local_plt
= (struct plt_entry
**)
6129 (local_got_offsets
+ symtab_hdr
->sh_info
);
6130 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
6135 struct plt_entry
*ent
;
6137 if (r_type
== R_PPC_PLTREL24
&& link_info
->shared
)
6138 addend
= irel
->r_addend
;
6139 ent
= find_plt_ent (plist
, got2
, addend
);
6142 if (htab
->plt_type
== PLT_NEW
6144 || !htab
->elf
.dynamic_sections_created
6145 || h
->dynindx
== -1)
6148 toff
= ent
->glink_offset
;
6153 toff
= ent
->plt
.offset
;
6158 /* If the branch and target are in the same section, you have
6159 no hope of adding stubs. We'll error out later should the
6164 /* There probably isn't any reason to handle symbols in
6165 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6166 attribute for a code section, and we are only looking at
6167 branches. However, implement it correctly here as a
6168 reference for other target relax_section functions. */
6169 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
6171 /* At this stage in linking, no SEC_MERGE symbol has been
6172 adjusted, so all references to such symbols need to be
6173 passed through _bfd_merged_section_offset. (Later, in
6174 relocate_section, all SEC_MERGE symbols *except* for
6175 section symbols have been adjusted.)
6177 gas may reduce relocations against symbols in SEC_MERGE
6178 sections to a relocation against the section symbol when
6179 the original addend was zero. When the reloc is against
6180 a section symbol we should include the addend in the
6181 offset passed to _bfd_merged_section_offset, since the
6182 location of interest is the original symbol. On the
6183 other hand, an access to "sym+addend" where "sym" is not
6184 a section symbol should not include the addend; Such an
6185 access is presumed to be an offset from "sym"; The
6186 location of interest is just "sym". */
6187 if (sym_type
== STT_SECTION
)
6188 toff
+= irel
->r_addend
;
6190 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
6191 elf_section_data (tsec
)->sec_info
,
6194 if (sym_type
!= STT_SECTION
)
6195 toff
+= irel
->r_addend
;
6197 /* PLTREL24 addends are special. */
6198 else if (r_type
!= R_PPC_PLTREL24
)
6199 toff
+= irel
->r_addend
;
6201 /* Attempted -shared link of non-pic code loses. */
6202 if (tsec
->output_section
== NULL
)
6205 roff
= irel
->r_offset
;
6207 /* If the branch is in range, no need to do anything. */
6208 if (tsec
!= bfd_und_section_ptr
6209 && (!link_info
->relocatable
6210 /* A relocatable link may have sections moved during
6211 final link, so do not presume they remain in range. */
6212 || tsec
->output_section
== isec
->output_section
))
6214 bfd_vma symaddr
, reladdr
;
6216 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
6217 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
6218 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
6222 /* Look for an existing fixup to this address. */
6223 for (f
= fixups
; f
; f
= f
->next
)
6224 if (f
->tsec
== tsec
&& f
->toff
== toff
)
6230 unsigned long stub_rtype
;
6232 val
= trampoff
- roff
;
6233 if (val
>= max_branch_offset
)
6234 /* Oh dear, we can't reach a trampoline. Don't try to add
6235 one. We'll report an error later. */
6238 if (link_info
->shared
)
6240 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
6245 size
= 4 * ARRAY_SIZE (stub_entry
);
6248 stub_rtype
= R_PPC_RELAX
;
6249 if (tsec
== htab
->plt
6250 || tsec
== htab
->glink
)
6252 stub_rtype
= R_PPC_RELAX_PLT
;
6253 if (r_type
== R_PPC_PLTREL24
)
6254 stub_rtype
= R_PPC_RELAX_PLTREL24
;
6257 /* Hijack the old relocation. Since we need two
6258 relocations for this use a "composite" reloc. */
6259 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
6261 irel
->r_offset
= trampoff
+ insn_offset
;
6262 if (r_type
== R_PPC_PLTREL24
6263 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
6266 /* Record the fixup so we don't do it again this section. */
6267 f
= bfd_malloc (sizeof (*f
));
6271 f
->trampoff
= trampoff
;
6279 val
= f
->trampoff
- roff
;
6280 if (val
>= max_branch_offset
)
6283 /* Nop out the reloc, since we're finalizing things here. */
6284 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
6287 /* Get the section contents. */
6288 if (contents
== NULL
)
6290 /* Get cached copy if it exists. */
6291 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
6292 contents
= elf_section_data (isec
)->this_hdr
.contents
;
6295 /* Go get them off disk. */
6296 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
6301 /* Fix up the existing branch to hit the trampoline. */
6302 hit_addr
= contents
+ roff
;
6306 case R_PPC_LOCAL24PC
:
6307 case R_PPC_PLTREL24
:
6308 t0
= bfd_get_32 (abfd
, hit_addr
);
6310 t0
|= val
& 0x3fffffc;
6311 bfd_put_32 (abfd
, t0
, hit_addr
);
6315 case R_PPC_REL14_BRTAKEN
:
6316 case R_PPC_REL14_BRNTAKEN
:
6317 t0
= bfd_get_32 (abfd
, hit_addr
);
6320 bfd_put_32 (abfd
, t0
, hit_addr
);
6325 /* Write out the trampolines. */
6334 struct one_fixup
*f
= fixups
;
6335 fixups
= fixups
->next
;
6340 contents
= bfd_realloc_or_free (contents
, trampoff
);
6341 if (contents
== NULL
)
6344 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
6345 dest
= contents
+ isec
->size
;
6346 /* Branch around the trampolines. */
6349 bfd_vma val
= B
+ trampoff
- isec
->size
;
6350 bfd_put_32 (abfd
, val
, dest
);
6353 isec
->size
= trampoff
;
6355 if (link_info
->shared
)
6357 stub
= shared_stub_entry
;
6358 size
= ARRAY_SIZE (shared_stub_entry
);
6363 size
= ARRAY_SIZE (stub_entry
);
6367 while (dest
< contents
+ trampoff
)
6369 bfd_put_32 (abfd
, stub
[i
], dest
);
6375 BFD_ASSERT (i
== 0);
6379 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
6381 if (! link_info
->keep_memory
)
6385 /* Cache the symbols for elf_link_input_bfd. */
6386 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
6390 if (contents
!= NULL
6391 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6393 if (!changes
&& !link_info
->keep_memory
)
6397 /* Cache the section contents for elf_link_input_bfd. */
6398 elf_section_data (isec
)->this_hdr
.contents
= contents
;
6404 /* Append sufficient NOP relocs so we can write out relocation
6405 information for the trampolines. */
6406 Elf_Internal_Shdr
*rel_hdr
;
6407 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
6408 * sizeof (*new_relocs
));
6413 memcpy (new_relocs
, internal_relocs
,
6414 isec
->reloc_count
* sizeof (*new_relocs
));
6415 for (ix
= changes
; ix
--;)
6417 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
6419 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
6421 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
6422 free (internal_relocs
);
6423 elf_section_data (isec
)->relocs
= new_relocs
;
6424 isec
->reloc_count
+= changes
;
6425 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
6426 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
6428 else if (elf_section_data (isec
)->relocs
!= internal_relocs
)
6429 free (internal_relocs
);
6431 *again
= changes
!= 0;
6432 if (!*again
&& link_info
->relocatable
)
6434 /* Convert the internal relax relocs to external form. */
6435 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6436 if (ELF32_R_TYPE (irel
->r_info
) == R_PPC_RELAX
)
6438 unsigned long r_symndx
= ELF32_R_SYM (irel
->r_info
);
6440 /* Rewrite the reloc and convert one of the trailing nop
6441 relocs to describe this relocation. */
6442 BFD_ASSERT (ELF32_R_TYPE (irelend
[-1].r_info
) == R_PPC_NONE
);
6443 /* The relocs are at the bottom 2 bytes */
6444 irel
[0].r_offset
+= 2;
6445 memmove (irel
+ 1, irel
, (irelend
- irel
- 1) * sizeof (*irel
));
6446 irel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
6447 irel
[1].r_offset
+= 4;
6448 irel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
6456 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
6458 if (contents
!= NULL
6459 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6461 if (internal_relocs
!= NULL
6462 && elf_section_data (isec
)->relocs
!= internal_relocs
)
6463 free (internal_relocs
);
6467 /* What to do when ld finds relocations against symbols defined in
6468 discarded sections. */
6471 ppc_elf_action_discarded (asection
*sec
)
6473 if (strcmp (".fixup", sec
->name
) == 0)
6476 if (strcmp (".got2", sec
->name
) == 0)
6479 return _bfd_elf_default_action_discarded (sec
);
6482 /* Fill in the address for a pointer generated in a linker section. */
6485 elf_finish_pointer_linker_section (bfd
*input_bfd
,
6486 elf_linker_section_t
*lsect
,
6487 struct elf_link_hash_entry
*h
,
6489 const Elf_Internal_Rela
*rel
)
6491 elf_linker_section_pointers_t
*linker_section_ptr
;
6493 BFD_ASSERT (lsect
!= NULL
);
6497 /* Handle global symbol. */
6498 struct ppc_elf_link_hash_entry
*eh
;
6500 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6501 BFD_ASSERT (eh
->elf
.def_regular
);
6502 linker_section_ptr
= eh
->linker_section_pointer
;
6506 /* Handle local symbol. */
6507 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
6509 BFD_ASSERT (is_ppc_elf (input_bfd
));
6510 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
6511 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
6514 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
6517 BFD_ASSERT (linker_section_ptr
!= NULL
);
6519 /* Offset will always be a multiple of four, so use the bottom bit
6520 as a "written" flag. */
6521 if ((linker_section_ptr
->offset
& 1) == 0)
6523 bfd_put_32 (lsect
->section
->owner
,
6524 relocation
+ linker_section_ptr
->addend
,
6525 lsect
->section
->contents
+ linker_section_ptr
->offset
);
6526 linker_section_ptr
->offset
+= 1;
6529 relocation
= (lsect
->section
->output_section
->vma
6530 + lsect
->section
->output_offset
6531 + linker_section_ptr
->offset
- 1
6532 - SYM_VAL (lsect
->sym
));
6536 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6537 lsect
->name
, (long) relocation
, (long) relocation
);
6543 #define PPC_LO(v) ((v) & 0xffff)
6544 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6545 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6548 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
6549 struct bfd_link_info
*info
)
6551 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6552 bfd
*output_bfd
= info
->output_bfd
;
6555 plt
= ((ent
->plt
.offset
& ~1)
6556 + plt_sec
->output_section
->vma
6557 + plt_sec
->output_offset
);
6563 if (ent
->addend
>= 32768)
6565 + ent
->sec
->output_section
->vma
6566 + ent
->sec
->output_offset
);
6567 else if (htab
->elf
.hgot
!= NULL
)
6568 got
= SYM_VAL (htab
->elf
.hgot
);
6572 if (plt
+ 0x8000 < 0x10000)
6574 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
6576 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6578 bfd_put_32 (output_bfd
, BCTR
, p
);
6580 bfd_put_32 (output_bfd
, NOP
, p
);
6585 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
6587 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6589 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6591 bfd_put_32 (output_bfd
, BCTR
, p
);
6597 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
6599 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6601 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6603 bfd_put_32 (output_bfd
, BCTR
, p
);
6608 /* Return true if symbol is defined statically. */
6611 is_static_defined (struct elf_link_hash_entry
*h
)
6613 return ((h
->root
.type
== bfd_link_hash_defined
6614 || h
->root
.type
== bfd_link_hash_defweak
)
6615 && h
->root
.u
.def
.section
!= NULL
6616 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6619 /* If INSN is an opcode that may be used with an @tls operand, return
6620 the transformed insn for TLS optimisation, otherwise return 0. If
6621 REG is non-zero only match an insn with RB or RA equal to REG. */
6624 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
6628 if ((insn
& (0x3f << 26)) != 31 << 26)
6631 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
6632 rtra
= insn
& ((1 << 26) - (1 << 16));
6633 else if (((insn
>> 16) & 0x1f) == reg
)
6634 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
6638 if ((insn
& (0x3ff << 1)) == 266 << 1)
6641 else if ((insn
& (0x1f << 1)) == 23 << 1
6642 && ((insn
& (0x1f << 6)) < 14 << 6
6643 || ((insn
& (0x1f << 6)) >= 16 << 6
6644 && (insn
& (0x1f << 6)) < 24 << 6)))
6645 /* load and store indexed -> dform. */
6646 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
6647 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6648 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6649 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
6650 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6652 insn
= (58 << 26) | 2;
6659 /* If INSN is an opcode that may be used with an @tprel operand, return
6660 the transformed insn for an undefined weak symbol, ie. with the
6661 thread pointer REG operand removed. Otherwise return 0. */
6664 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
6666 if ((insn
& (0x1f << 16)) == reg
<< 16
6667 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6668 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
6669 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6670 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6671 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6672 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6673 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6674 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6675 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6676 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6677 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6678 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6679 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
6680 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
6681 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
6682 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6684 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
6685 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
6687 insn
&= ~(0x1f << 16);
6689 else if ((insn
& (0x1f << 21)) == reg
<< 21
6690 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
6691 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
6692 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
6694 insn
&= ~(0x1f << 21);
6695 insn
|= (insn
& (0x1f << 16)) << 5;
6696 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6697 insn
-= 2 >> 26; /* convert to ori,oris */
6704 /* The RELOCATE_SECTION function is called by the ELF backend linker
6705 to handle the relocations for a section.
6707 The relocs are always passed as Rela structures; if the section
6708 actually uses Rel structures, the r_addend field will always be
6711 This function is responsible for adjust the section contents as
6712 necessary, and (if using Rela relocs and generating a
6713 relocatable output file) adjusting the reloc addend as
6716 This function does not have to worry about setting the reloc
6717 address or the reloc symbol index.
6719 LOCAL_SYMS is a pointer to the swapped in local symbols.
6721 LOCAL_SECTIONS is an array giving the section in the input file
6722 corresponding to the st_shndx field of each local symbol.
6724 The global hash table entry for the global symbols can be found
6725 via elf_sym_hashes (input_bfd).
6727 When generating relocatable output, this function must handle
6728 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6729 going to be the section symbol corresponding to the output
6730 section, which means that the addend must be adjusted
6734 ppc_elf_relocate_section (bfd
*output_bfd
,
6735 struct bfd_link_info
*info
,
6737 asection
*input_section
,
6739 Elf_Internal_Rela
*relocs
,
6740 Elf_Internal_Sym
*local_syms
,
6741 asection
**local_sections
)
6743 Elf_Internal_Shdr
*symtab_hdr
;
6744 struct elf_link_hash_entry
**sym_hashes
;
6745 struct ppc_elf_link_hash_table
*htab
;
6746 Elf_Internal_Rela
*rel
;
6747 Elf_Internal_Rela
*relend
;
6748 Elf_Internal_Rela outrel
;
6749 asection
*got2
, *sreloc
= NULL
;
6750 bfd_vma
*local_got_offsets
;
6751 bfd_boolean ret
= TRUE
;
6752 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
6753 bfd_boolean is_vxworks_tls
;
6756 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6757 "%ld relocations%s",
6758 input_bfd
, input_section
,
6759 (long) input_section
->reloc_count
,
6760 (info
->relocatable
) ? " (relocatable)" : "");
6763 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
6765 /* Initialize howto table if not already done. */
6766 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
6767 ppc_elf_howto_init ();
6769 htab
= ppc_elf_hash_table (info
);
6770 local_got_offsets
= elf_local_got_offsets (input_bfd
);
6771 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6772 sym_hashes
= elf_sym_hashes (input_bfd
);
6773 /* We have to handle relocations in vxworks .tls_vars sections
6774 specially, because the dynamic loader is 'weird'. */
6775 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
6776 && !strcmp (input_section
->output_section
->name
,
6779 relend
= relocs
+ input_section
->reloc_count
;
6780 for (; rel
< relend
; rel
++)
6782 enum elf_ppc_reloc_type r_type
;
6784 bfd_reloc_status_type r
;
6785 Elf_Internal_Sym
*sym
;
6787 struct elf_link_hash_entry
*h
;
6788 const char *sym_name
;
6789 reloc_howto_type
*howto
;
6790 unsigned long r_symndx
;
6792 bfd_vma branch_bit
, from
;
6793 bfd_boolean unresolved_reloc
;
6795 unsigned int tls_type
, tls_mask
, tls_gd
;
6796 struct plt_entry
**ifunc
;
6798 r_type
= ELF32_R_TYPE (rel
->r_info
);
6802 unresolved_reloc
= FALSE
;
6804 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6806 if (r_symndx
< symtab_hdr
->sh_info
)
6808 sym
= local_syms
+ r_symndx
;
6809 sec
= local_sections
[r_symndx
];
6810 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
6812 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6816 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6817 r_symndx
, symtab_hdr
, sym_hashes
,
6819 unresolved_reloc
, warned
);
6821 sym_name
= h
->root
.root
.string
;
6824 if (sec
!= NULL
&& elf_discarded_section (sec
))
6826 /* For relocs against symbols from removed linkonce sections,
6827 or sections discarded by a linker script, we just want the
6828 section contents zeroed. Avoid any special processing. */
6830 if (r_type
< R_PPC_max
)
6831 howto
= ppc_elf_howto_table
[r_type
];
6832 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6833 rel
, relend
, howto
, contents
);
6836 if (info
->relocatable
)
6839 && r_type
== R_PPC_PLTREL24
6840 && rel
->r_addend
>= 32768)
6842 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6843 addend specifies the GOT pointer offset within .got2. */
6844 rel
->r_addend
+= got2
->output_offset
;
6849 /* TLS optimizations. Replace instruction sequences and relocs
6850 based on information we collected in tls_optimize. We edit
6851 RELOCS so that --emit-relocs will output something sensible
6852 for the final instruction stream. */
6856 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
6857 else if (local_got_offsets
!= NULL
)
6859 struct plt_entry
**local_plt
;
6862 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
6863 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
6864 tls_mask
= lgot_masks
[r_symndx
];
6867 /* Ensure reloc mapping code below stays sane. */
6868 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
6869 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
6870 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
6871 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
6872 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
6873 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
6874 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
6875 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
6882 case R_PPC_GOT_TPREL16
:
6883 case R_PPC_GOT_TPREL16_LO
:
6884 if ((tls_mask
& TLS_TLS
) != 0
6885 && (tls_mask
& TLS_TPREL
) == 0)
6889 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
6891 insn
|= 0x3c020000; /* addis 0,2,0 */
6892 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
6893 r_type
= R_PPC_TPREL16_HA
;
6894 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6899 if ((tls_mask
& TLS_TLS
) != 0
6900 && (tls_mask
& TLS_TPREL
) == 0)
6904 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6905 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
6908 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6909 r_type
= R_PPC_TPREL16_LO
;
6910 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6912 /* Was PPC_TLS which sits on insn boundary, now
6913 PPC_TPREL16_LO which is at low-order half-word. */
6914 rel
->r_offset
+= d_offset
;
6918 case R_PPC_GOT_TLSGD16_HI
:
6919 case R_PPC_GOT_TLSGD16_HA
:
6920 tls_gd
= TLS_TPRELGD
;
6921 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
6925 case R_PPC_GOT_TLSLD16_HI
:
6926 case R_PPC_GOT_TLSLD16_HA
:
6927 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
6930 if ((tls_mask
& tls_gd
) != 0)
6931 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6932 + R_PPC_GOT_TPREL16
);
6935 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
6936 rel
->r_offset
-= d_offset
;
6937 r_type
= R_PPC_NONE
;
6939 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6943 case R_PPC_GOT_TLSGD16
:
6944 case R_PPC_GOT_TLSGD16_LO
:
6945 tls_gd
= TLS_TPRELGD
;
6946 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
6950 case R_PPC_GOT_TLSLD16
:
6951 case R_PPC_GOT_TLSLD16_LO
:
6952 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
6954 unsigned int insn1
, insn2
;
6958 offset
= (bfd_vma
) -1;
6959 /* If not using the newer R_PPC_TLSGD/LD to mark
6960 __tls_get_addr calls, we must trust that the call
6961 stays with its arg setup insns, ie. that the next
6962 reloc is the __tls_get_addr call associated with
6963 the current reloc. Edit both insns. */
6964 if (input_section
->has_tls_get_addr_call
6966 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
6967 htab
->tls_get_addr
))
6968 offset
= rel
[1].r_offset
;
6969 if ((tls_mask
& tls_gd
) != 0)
6972 insn1
= bfd_get_32 (output_bfd
,
6973 contents
+ rel
->r_offset
- d_offset
);
6974 insn1
&= (1 << 26) - 1;
6975 insn1
|= 32 << 26; /* lwz */
6976 if (offset
!= (bfd_vma
) -1)
6978 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
6979 insn2
= 0x7c631214; /* add 3,3,2 */
6980 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6982 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6983 + R_PPC_GOT_TPREL16
);
6984 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6989 insn1
= 0x3c620000; /* addis 3,2,0 */
6992 /* Was an LD reloc. */
6994 r_symndx
< symtab_hdr
->sh_info
;
6996 if (local_sections
[r_symndx
] == sec
)
6998 if (r_symndx
>= symtab_hdr
->sh_info
)
6999 r_symndx
= STN_UNDEF
;
7000 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7001 if (r_symndx
!= STN_UNDEF
)
7002 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7003 + sec
->output_offset
7004 + sec
->output_section
->vma
);
7006 r_type
= R_PPC_TPREL16_HA
;
7007 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7008 if (offset
!= (bfd_vma
) -1)
7010 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7011 rel
[1].r_offset
= offset
+ d_offset
;
7012 rel
[1].r_addend
= rel
->r_addend
;
7013 insn2
= 0x38630000; /* addi 3,3,0 */
7014 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7017 bfd_put_32 (output_bfd
, insn1
,
7018 contents
+ rel
->r_offset
- d_offset
);
7021 /* We changed the symbol on an LD reloc. Start over
7022 in order to get h, sym, sec etc. right. */
7030 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7033 bfd_vma offset
= rel
->r_offset
;
7035 if ((tls_mask
& TLS_TPRELGD
) != 0)
7038 r_type
= R_PPC_NONE
;
7039 insn2
= 0x7c631214; /* add 3,3,2 */
7044 r_type
= R_PPC_TPREL16_LO
;
7045 rel
->r_offset
+= d_offset
;
7046 insn2
= 0x38630000; /* addi 3,3,0 */
7048 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7049 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7050 /* Zap the reloc on the _tls_get_addr call too. */
7051 BFD_ASSERT (offset
== rel
[1].r_offset
);
7052 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7057 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7062 r_symndx
< symtab_hdr
->sh_info
;
7064 if (local_sections
[r_symndx
] == sec
)
7066 if (r_symndx
>= symtab_hdr
->sh_info
)
7067 r_symndx
= STN_UNDEF
;
7068 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7069 if (r_symndx
!= STN_UNDEF
)
7070 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7071 + sec
->output_offset
7072 + sec
->output_section
->vma
);
7074 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7075 rel
->r_offset
+= d_offset
;
7076 insn2
= 0x38630000; /* addi 3,3,0 */
7077 bfd_put_32 (output_bfd
, insn2
,
7078 contents
+ rel
->r_offset
- d_offset
);
7079 /* Zap the reloc on the _tls_get_addr call too. */
7080 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
7081 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7088 /* Handle other relocations that tweak non-addend part of insn. */
7095 /* Branch taken prediction relocations. */
7096 case R_PPC_ADDR14_BRTAKEN
:
7097 case R_PPC_REL14_BRTAKEN
:
7098 branch_bit
= BRANCH_PREDICT_BIT
;
7101 /* Branch not taken prediction relocations. */
7102 case R_PPC_ADDR14_BRNTAKEN
:
7103 case R_PPC_REL14_BRNTAKEN
:
7107 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7108 insn
&= ~BRANCH_PREDICT_BIT
;
7111 from
= (rel
->r_offset
7112 + input_section
->output_offset
7113 + input_section
->output_section
->vma
);
7115 /* Invert 'y' bit if not the default. */
7116 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7117 insn
^= BRANCH_PREDICT_BIT
;
7119 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7125 if (!htab
->is_vxworks
)
7127 struct plt_entry
*ent
;
7131 if (h
->type
== STT_GNU_IFUNC
)
7132 ifunc
= &h
->plt
.plist
;
7134 else if (local_got_offsets
!= NULL
7135 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
7137 struct plt_entry
**local_plt
;
7139 local_plt
= (struct plt_entry
**) (local_got_offsets
7140 + symtab_hdr
->sh_info
);
7141 ifunc
= local_plt
+ r_symndx
;
7147 || is_branch_reloc (r_type
)))
7150 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
7151 addend
= rel
->r_addend
;
7152 ent
= find_plt_ent (ifunc
, got2
, addend
);
7156 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
7158 Elf_Internal_Rela rela
;
7161 rela
.r_offset
= (htab
->iplt
->output_section
->vma
7162 + htab
->iplt
->output_offset
7164 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7165 rela
.r_addend
= relocation
;
7166 loc
= htab
->reliplt
->contents
;
7167 loc
+= (htab
->reliplt
->reloc_count
++
7168 * sizeof (Elf32_External_Rela
));
7169 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7171 ent
->plt
.offset
|= 1;
7173 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
7175 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
7176 + ent
->glink_offset
);
7177 write_glink_stub (ent
, htab
->iplt
, p
, info
);
7178 ent
->glink_offset
|= 1;
7181 unresolved_reloc
= FALSE
;
7182 if (htab
->plt_type
== PLT_NEW
7183 || !htab
->elf
.dynamic_sections_created
7185 relocation
= (htab
->glink
->output_section
->vma
7186 + htab
->glink
->output_offset
7187 + (ent
->glink_offset
& ~1));
7189 relocation
= (htab
->plt
->output_section
->vma
7190 + htab
->plt
->output_offset
7195 addend
= rel
->r_addend
;
7198 if (r_type
< R_PPC_max
)
7199 howto
= ppc_elf_howto_table
[r_type
];
7203 info
->callbacks
->einfo
7204 (_("%B: unknown relocation type %d for symbol %s\n"),
7205 input_bfd
, (int) r_type
, sym_name
);
7207 bfd_set_error (bfd_error_bad_value
);
7215 case R_PPC_EMB_MRKREF
:
7216 case R_PPC_GNU_VTINHERIT
:
7217 case R_PPC_GNU_VTENTRY
:
7220 /* GOT16 relocations. Like an ADDR16 using the symbol's
7221 address in the GOT as relocation value instead of the
7222 symbol's value itself. Also, create a GOT entry for the
7223 symbol and put the symbol value there. */
7224 case R_PPC_GOT_TLSGD16
:
7225 case R_PPC_GOT_TLSGD16_LO
:
7226 case R_PPC_GOT_TLSGD16_HI
:
7227 case R_PPC_GOT_TLSGD16_HA
:
7228 tls_type
= TLS_TLS
| TLS_GD
;
7231 case R_PPC_GOT_TLSLD16
:
7232 case R_PPC_GOT_TLSLD16_LO
:
7233 case R_PPC_GOT_TLSLD16_HI
:
7234 case R_PPC_GOT_TLSLD16_HA
:
7235 tls_type
= TLS_TLS
| TLS_LD
;
7238 case R_PPC_GOT_TPREL16
:
7239 case R_PPC_GOT_TPREL16_LO
:
7240 case R_PPC_GOT_TPREL16_HI
:
7241 case R_PPC_GOT_TPREL16_HA
:
7242 tls_type
= TLS_TLS
| TLS_TPREL
;
7245 case R_PPC_GOT_DTPREL16
:
7246 case R_PPC_GOT_DTPREL16_LO
:
7247 case R_PPC_GOT_DTPREL16_HI
:
7248 case R_PPC_GOT_DTPREL16_HA
:
7249 tls_type
= TLS_TLS
| TLS_DTPREL
;
7253 case R_PPC_GOT16_LO
:
7254 case R_PPC_GOT16_HI
:
7255 case R_PPC_GOT16_HA
:
7259 /* Relocation is to the entry for this symbol in the global
7265 if (htab
->got
== NULL
)
7269 if (tls_type
== (TLS_TLS
| TLS_LD
)
7271 || !h
->def_dynamic
))
7272 offp
= &htab
->tlsld_got
.offset
;
7276 dyn
= htab
->elf
.dynamic_sections_created
;
7277 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7279 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
7280 /* This is actually a static link, or it is a
7281 -Bsymbolic link and the symbol is defined
7282 locally, or the symbol was forced to be local
7283 because of a version file. */
7288 unresolved_reloc
= FALSE
;
7290 offp
= &h
->got
.offset
;
7294 if (local_got_offsets
== NULL
)
7296 offp
= &local_got_offsets
[r_symndx
];
7299 /* The offset must always be a multiple of 4. We use the
7300 least significant bit to record whether we have already
7301 processed this entry. */
7307 unsigned int tls_m
= (tls_mask
7308 & (TLS_LD
| TLS_GD
| TLS_DTPREL
7309 | TLS_TPREL
| TLS_TPRELGD
));
7311 if (offp
== &htab
->tlsld_got
.offset
)
7317 /* We might have multiple got entries for this sym.
7318 Initialize them all. */
7323 if ((tls_m
& TLS_LD
) != 0)
7325 tls_ty
= TLS_TLS
| TLS_LD
;
7328 else if ((tls_m
& TLS_GD
) != 0)
7330 tls_ty
= TLS_TLS
| TLS_GD
;
7333 else if ((tls_m
& TLS_DTPREL
) != 0)
7335 tls_ty
= TLS_TLS
| TLS_DTPREL
;
7336 tls_m
&= ~TLS_DTPREL
;
7338 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
7340 tls_ty
= TLS_TLS
| TLS_TPREL
;
7344 /* Generate relocs for the dynamic linker. */
7345 if ((info
->shared
|| indx
!= 0)
7346 && (offp
== &htab
->tlsld_got
.offset
7348 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7349 || h
->root
.type
!= bfd_link_hash_undefweak
))
7351 asection
*rsec
= htab
->relgot
;
7354 outrel
.r_offset
= (htab
->got
->output_section
->vma
7355 + htab
->got
->output_offset
7357 outrel
.r_addend
= 0;
7358 if (tls_ty
& (TLS_LD
| TLS_GD
))
7360 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
7361 if (tls_ty
== (TLS_TLS
| TLS_GD
))
7363 loc
= rsec
->contents
;
7364 loc
+= (rsec
->reloc_count
++
7365 * sizeof (Elf32_External_Rela
));
7366 bfd_elf32_swap_reloca_out (output_bfd
,
7368 outrel
.r_offset
+= 4;
7370 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
7373 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
7374 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
7375 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
7376 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
7378 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
7379 else if (ifunc
!= NULL
)
7380 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7382 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
7383 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
7385 outrel
.r_addend
+= relocation
;
7386 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
7387 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
7389 loc
= rsec
->contents
;
7390 loc
+= (rsec
->reloc_count
++
7391 * sizeof (Elf32_External_Rela
));
7392 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
7395 /* Init the .got section contents if we're not
7396 emitting a reloc. */
7399 bfd_vma value
= relocation
;
7401 if (tls_ty
== (TLS_TLS
| TLS_LD
))
7403 else if (tls_ty
!= 0)
7405 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7406 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
7407 value
+= DTP_OFFSET
- TP_OFFSET
;
7409 if (tls_ty
== (TLS_TLS
| TLS_GD
))
7411 bfd_put_32 (output_bfd
, value
,
7412 htab
->got
->contents
+ off
+ 4);
7416 bfd_put_32 (output_bfd
, value
,
7417 htab
->got
->contents
+ off
);
7421 if (tls_ty
& (TLS_LD
| TLS_GD
))
7430 if (off
>= (bfd_vma
) -2)
7433 if ((tls_type
& TLS_TLS
) != 0)
7435 if (tls_type
!= (TLS_TLS
| TLS_LD
))
7437 if ((tls_mask
& TLS_LD
) != 0
7439 || !h
->def_dynamic
))
7441 if (tls_type
!= (TLS_TLS
| TLS_GD
))
7443 if ((tls_mask
& TLS_GD
) != 0)
7445 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
7447 if ((tls_mask
& TLS_DTPREL
) != 0)
7454 relocation
= (htab
->got
->output_section
->vma
7455 + htab
->got
->output_offset
7457 - SYM_VAL (htab
->elf
.hgot
));
7459 /* Addends on got relocations don't make much sense.
7460 x+off@got is actually x@got+off, and since the got is
7461 generated by a hash table traversal, the value in the
7462 got at entry m+n bears little relation to the entry m. */
7464 info
->callbacks
->einfo
7465 (_("%H: non-zero addend on %s reloc against `%s'\n"),
7466 input_bfd
, input_section
, rel
->r_offset
,
7472 /* Relocations that need no special processing. */
7473 case R_PPC_LOCAL24PC
:
7474 /* It makes no sense to point a local relocation
7475 at a symbol not in this object. */
7476 if (unresolved_reloc
)
7478 if (! (*info
->callbacks
->undefined_symbol
) (info
,
7479 h
->root
.root
.string
,
7489 case R_PPC_DTPREL16
:
7490 case R_PPC_DTPREL16_LO
:
7491 case R_PPC_DTPREL16_HI
:
7492 case R_PPC_DTPREL16_HA
:
7493 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7496 /* Relocations that may need to be propagated if this is a shared
7499 case R_PPC_TPREL16_LO
:
7500 case R_PPC_TPREL16_HI
:
7501 case R_PPC_TPREL16_HA
:
7503 && h
->root
.type
== bfd_link_hash_undefweak
7504 && h
->dynindx
== -1)
7506 /* Make this relocation against an undefined weak symbol
7507 resolve to zero. This is really just a tweak, since
7508 code using weak externs ought to check that they are
7509 defined before using them. */
7510 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
7511 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
7512 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
7514 bfd_put_32 (output_bfd
, insn
, p
);
7517 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
7518 /* The TPREL16 relocs shouldn't really be used in shared
7519 libs as they will result in DT_TEXTREL being set, but
7520 support them anyway. */
7524 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
7527 case R_PPC_DTPREL32
:
7528 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7531 case R_PPC_DTPMOD32
:
7537 case R_PPC_REL16_LO
:
7538 case R_PPC_REL16_HI
:
7539 case R_PPC_REL16_HA
:
7543 if (h
== NULL
|| h
== htab
->elf
.hgot
)
7549 case R_PPC_ADDR16_LO
:
7550 case R_PPC_ADDR16_HI
:
7551 case R_PPC_ADDR16_HA
:
7558 case R_PPC_REL14_BRTAKEN
:
7559 case R_PPC_REL14_BRNTAKEN
:
7560 /* If these relocations are not to a named symbol, they can be
7561 handled right here, no need to bother the dynamic linker. */
7562 if (SYMBOL_CALLS_LOCAL (info
, h
)
7563 || h
== htab
->elf
.hgot
)
7569 case R_PPC_ADDR14_BRTAKEN
:
7570 case R_PPC_ADDR14_BRNTAKEN
:
7571 if (h
!= NULL
&& !info
->shared
)
7576 if ((input_section
->flags
& SEC_ALLOC
) == 0
7582 && ((h
->root
.type
== bfd_link_hash_undefined
7583 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
7584 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
7585 || (h
->root
.type
== bfd_link_hash_undefweak
7586 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
7587 && (must_be_dyn_reloc (info
, r_type
)
7588 || !SYMBOL_CALLS_LOCAL (info
, h
)))
7589 || (ELIMINATE_COPY_RELOCS
7594 && !h
->def_regular
))
7599 fprintf (stderr
, "ppc_elf_relocate_section needs to "
7600 "create relocation for %s\n",
7601 (h
&& h
->root
.root
.string
7602 ? h
->root
.root
.string
: "<unknown>"));
7605 /* When generating a shared object, these relocations
7606 are copied into the output file to be resolved at run
7610 sreloc
= elf_section_data (input_section
)->sreloc
;
7611 if (!htab
->elf
.dynamic_sections_created
)
7612 sreloc
= htab
->reliplt
;
7618 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
7621 if (outrel
.r_offset
== (bfd_vma
) -1
7622 || outrel
.r_offset
== (bfd_vma
) -2)
7623 skip
= (int) outrel
.r_offset
;
7624 outrel
.r_offset
+= (input_section
->output_section
->vma
7625 + input_section
->output_offset
);
7628 memset (&outrel
, 0, sizeof outrel
);
7630 && (h
->root
.type
== bfd_link_hash_undefined
7631 || h
->root
.type
== bfd_link_hash_undefweak
))
7632 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
7634 unresolved_reloc
= FALSE
;
7635 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
7636 outrel
.r_addend
= rel
->r_addend
;
7640 outrel
.r_addend
= relocation
+ rel
->r_addend
;
7642 if (r_type
!= R_PPC_ADDR32
)
7648 /* If we get here when building a static
7649 executable, then the libc startup function
7650 responsible for applying indirect function
7651 relocations is going to complain about
7653 If we get here when building a dynamic
7654 executable, it will be because we have
7655 a text relocation. The dynamic loader
7656 will set the text segment writable and
7657 non-executable to apply text relocations.
7658 So we'll segfault when trying to run the
7659 indirection function to resolve the reloc. */
7660 info
->callbacks
->einfo
7661 (_("%H: relocation %s for indirect "
7662 "function %s unsupported\n"),
7663 input_bfd
, input_section
, rel
->r_offset
,
7668 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
7670 else if (sec
== NULL
|| sec
->owner
== NULL
)
7672 bfd_set_error (bfd_error_bad_value
);
7679 /* We are turning this relocation into one
7680 against a section symbol. It would be
7681 proper to subtract the symbol's value,
7682 osec->vma, from the emitted reloc addend,
7683 but ld.so expects buggy relocs.
7684 FIXME: Why not always use a zero index? */
7685 osec
= sec
->output_section
;
7686 indx
= elf_section_data (osec
)->dynindx
;
7689 osec
= htab
->elf
.text_index_section
;
7690 indx
= elf_section_data (osec
)->dynindx
;
7692 BFD_ASSERT (indx
!= 0);
7695 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7696 indx
, osec
->name
, osec
->flags
,
7697 h
->root
.root
.string
);
7701 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
7703 else if (ifunc
!= NULL
)
7704 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7706 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
7709 loc
= sreloc
->contents
;
7710 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7711 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
7716 /* This reloc will be computed at runtime. We clear the memory
7717 so that it contains predictable value. */
7719 && ((input_section
->flags
& SEC_ALLOC
) != 0
7720 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
7722 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
7729 case R_PPC_RELAX_PLT
:
7730 case R_PPC_RELAX_PLTREL24
:
7733 struct plt_entry
*ent
;
7734 bfd_vma got2_addend
= 0;
7736 if (r_type
== R_PPC_RELAX_PLTREL24
)
7739 got2_addend
= addend
;
7742 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
7743 if (htab
->plt_type
== PLT_NEW
)
7744 relocation
= (htab
->glink
->output_section
->vma
7745 + htab
->glink
->output_offset
7746 + ent
->glink_offset
);
7748 relocation
= (htab
->plt
->output_section
->vma
7749 + htab
->plt
->output_offset
7756 relocation
-= (input_section
->output_section
->vma
7757 + input_section
->output_offset
7758 + rel
->r_offset
- 4);
7764 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7765 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
7767 /* We're clearing the bits for R_PPC_ADDR16_HA
7768 and R_PPC_ADDR16_LO here. */
7772 /* t0 is HA, t1 is LO */
7773 relocation
+= addend
;
7774 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
7775 t1
|= relocation
& 0xffff;
7777 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
7778 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
7780 /* Rewrite the reloc and convert one of the trailing nop
7781 relocs to describe this relocation. */
7782 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
7783 /* The relocs are at the bottom 2 bytes */
7784 rel
[0].r_offset
+= 2;
7785 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
7786 rel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
7787 rel
[1].r_offset
+= 4;
7788 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
7793 /* Indirect .sdata relocation. */
7794 case R_PPC_EMB_SDAI16
:
7795 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
7796 if (!is_static_defined (htab
->sdata
[0].sym
))
7798 unresolved_reloc
= TRUE
;
7802 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
7803 h
, relocation
, rel
);
7807 /* Indirect .sdata2 relocation. */
7808 case R_PPC_EMB_SDA2I16
:
7809 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
7810 if (!is_static_defined (htab
->sdata
[1].sym
))
7812 unresolved_reloc
= TRUE
;
7816 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
7817 h
, relocation
, rel
);
7821 /* Handle the TOC16 reloc. We want to use the offset within the .got
7822 section, not the actual VMA. This is appropriate when generating
7823 an embedded ELF object, for which the .got section acts like the
7824 AIX .toc section. */
7825 case R_PPC_TOC16
: /* phony GOT16 relocations */
7826 if (sec
== NULL
|| sec
->output_section
== NULL
)
7828 unresolved_reloc
= TRUE
;
7831 BFD_ASSERT (strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
7832 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
7834 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
7837 case R_PPC_PLTREL24
:
7838 if (h
== NULL
|| ifunc
!= NULL
)
7840 /* Relocation is to the entry for this symbol in the
7841 procedure linkage table. */
7843 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
,
7844 info
->shared
? addend
: 0);
7847 || htab
->plt
== NULL
)
7849 /* We didn't make a PLT entry for this symbol. This
7850 happens when statically linking PIC code, or when
7851 using -Bsymbolic. */
7855 unresolved_reloc
= FALSE
;
7856 if (htab
->plt_type
== PLT_NEW
)
7857 relocation
= (htab
->glink
->output_section
->vma
7858 + htab
->glink
->output_offset
7859 + ent
->glink_offset
);
7861 relocation
= (htab
->plt
->output_section
->vma
7862 + htab
->plt
->output_offset
7867 /* Relocate against _SDA_BASE_. */
7868 case R_PPC_SDAREL16
:
7871 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
7874 || sec
->output_section
== NULL
7875 || !is_static_defined (sda
))
7877 unresolved_reloc
= TRUE
;
7880 addend
-= SYM_VAL (sda
);
7882 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7883 if (! ((CONST_STRNEQ (name
, ".sdata")
7884 && (name
[6] == 0 || name
[6] == '.'))
7885 || (CONST_STRNEQ (name
, ".sbss")
7886 && (name
[5] == 0 || name
[5] == '.'))))
7888 info
->callbacks
->einfo
7889 (_("%B: the target (%s) of a %s relocation is "
7890 "in the wrong output section (%s)\n"),
7899 /* Relocate against _SDA2_BASE_. */
7900 case R_PPC_EMB_SDA2REL
:
7903 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
7906 || sec
->output_section
== NULL
7907 || !is_static_defined (sda
))
7909 unresolved_reloc
= TRUE
;
7912 addend
-= SYM_VAL (sda
);
7914 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7915 if (! (CONST_STRNEQ (name
, ".sdata2")
7916 || CONST_STRNEQ (name
, ".sbss2")))
7918 info
->callbacks
->einfo
7919 (_("%B: the target (%s) of a %s relocation is "
7920 "in the wrong output section (%s)\n"),
7929 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7930 case R_PPC_EMB_SDA21
:
7931 case R_PPC_EMB_RELSDA
:
7935 struct elf_link_hash_entry
*sda
= NULL
;
7937 if (sec
== NULL
|| sec
->output_section
== NULL
)
7939 unresolved_reloc
= TRUE
;
7943 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7944 if (((CONST_STRNEQ (name
, ".sdata")
7945 && (name
[6] == 0 || name
[6] == '.'))
7946 || (CONST_STRNEQ (name
, ".sbss")
7947 && (name
[5] == 0 || name
[5] == '.'))))
7950 sda
= htab
->sdata
[0].sym
;
7952 else if (CONST_STRNEQ (name
, ".sdata2")
7953 || CONST_STRNEQ (name
, ".sbss2"))
7956 sda
= htab
->sdata
[1].sym
;
7958 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
7959 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
7965 info
->callbacks
->einfo
7966 (_("%B: the target (%s) of a %s relocation is "
7967 "in the wrong output section (%s)\n"),
7973 bfd_set_error (bfd_error_bad_value
);
7980 if (!is_static_defined (sda
))
7982 unresolved_reloc
= TRUE
;
7985 addend
-= SYM_VAL (sda
);
7988 if (r_type
== R_PPC_EMB_SDA21
)
7990 bfd_vma insn
; /* Fill in register field. */
7992 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7993 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
7994 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7999 /* Relocate against the beginning of the section. */
8001 case R_PPC_SECTOFF_LO
:
8002 case R_PPC_SECTOFF_HI
:
8003 case R_PPC_SECTOFF_HA
:
8004 if (sec
== NULL
|| sec
->output_section
== NULL
)
8006 unresolved_reloc
= TRUE
;
8009 addend
-= sec
->output_section
->vma
;
8012 /* Negative relocations. */
8013 case R_PPC_EMB_NADDR32
:
8014 case R_PPC_EMB_NADDR16
:
8015 case R_PPC_EMB_NADDR16_LO
:
8016 case R_PPC_EMB_NADDR16_HI
:
8017 case R_PPC_EMB_NADDR16_HA
:
8018 addend
-= 2 * relocation
;
8022 case R_PPC_GLOB_DAT
:
8023 case R_PPC_JMP_SLOT
:
8024 case R_PPC_RELATIVE
:
8025 case R_PPC_IRELATIVE
:
8027 case R_PPC_PLTREL32
:
8028 case R_PPC_PLT16_LO
:
8029 case R_PPC_PLT16_HI
:
8030 case R_PPC_PLT16_HA
:
8032 case R_PPC_EMB_RELSEC16
:
8033 case R_PPC_EMB_RELST_LO
:
8034 case R_PPC_EMB_RELST_HI
:
8035 case R_PPC_EMB_RELST_HA
:
8036 case R_PPC_EMB_BIT_FLD
:
8037 info
->callbacks
->einfo
8038 (_("%B: relocation %s is not yet supported for symbol %s\n"),
8043 bfd_set_error (bfd_error_invalid_operation
);
8048 /* Do any further special processing. */
8054 case R_PPC_ADDR16_HA
:
8055 case R_PPC_REL16_HA
:
8056 case R_PPC_SECTOFF_HA
:
8057 case R_PPC_TPREL16_HA
:
8058 case R_PPC_DTPREL16_HA
:
8059 case R_PPC_EMB_NADDR16_HA
:
8060 case R_PPC_EMB_RELST_HA
:
8061 /* It's just possible that this symbol is a weak symbol
8062 that's not actually defined anywhere. In that case,
8063 'sec' would be NULL, and we should leave the symbol
8064 alone (it will be set to zero elsewhere in the link). */
8069 case R_PPC_PLT16_HA
:
8070 case R_PPC_GOT16_HA
:
8071 case R_PPC_GOT_TLSGD16_HA
:
8072 case R_PPC_GOT_TLSLD16_HA
:
8073 case R_PPC_GOT_TPREL16_HA
:
8074 case R_PPC_GOT_DTPREL16_HA
:
8075 /* Add 0x10000 if sign bit in 0:15 is set.
8076 Bits 0:15 are not used. */
8082 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8083 "offset = %ld, addend = %ld\n",
8088 (long) rel
->r_offset
,
8092 if (unresolved_reloc
8093 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8096 info
->callbacks
->einfo
8097 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
8098 input_bfd
, input_section
, rel
->r_offset
,
8104 r
= _bfd_final_link_relocate (howto
,
8112 if (r
!= bfd_reloc_ok
)
8114 if (r
== bfd_reloc_overflow
)
8119 && h
->root
.type
== bfd_link_hash_undefweak
8120 && howto
->pc_relative
)
8122 /* Assume this is a call protected by other code that
8123 detect the symbol is undefined. If this is the case,
8124 we can safely ignore the overflow. If not, the
8125 program is hosed anyway, and a little warning isn't
8131 if (! (*info
->callbacks
->reloc_overflow
) (info
,
8132 (h
? &h
->root
: NULL
),
8143 info
->callbacks
->einfo
8144 (_("%H: %s reloc against `%s': error %d\n"),
8145 input_bfd
, input_section
, rel
->r_offset
,
8146 howto
->name
, sym_name
, (int) r
);
8153 fprintf (stderr
, "\n");
8159 /* Finish up dynamic symbol handling. We set the contents of various
8160 dynamic sections here. */
8163 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
8164 struct bfd_link_info
*info
,
8165 struct elf_link_hash_entry
*h
,
8166 Elf_Internal_Sym
*sym
)
8168 struct ppc_elf_link_hash_table
*htab
;
8169 struct plt_entry
*ent
;
8170 bfd_boolean doneone
;
8173 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
8174 h
->root
.root
.string
);
8177 htab
= ppc_elf_hash_table (info
);
8178 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
8181 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8182 if (ent
->plt
.offset
!= (bfd_vma
) -1)
8186 Elf_Internal_Rela rela
;
8188 bfd_vma reloc_index
;
8190 if (htab
->plt_type
== PLT_NEW
8191 || !htab
->elf
.dynamic_sections_created
8192 || h
->dynindx
== -1)
8193 reloc_index
= ent
->plt
.offset
/ 4;
8196 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
8197 / htab
->plt_slot_size
);
8198 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
8199 && htab
->plt_type
== PLT_OLD
)
8200 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
8203 /* This symbol has an entry in the procedure linkage table.
8205 if (htab
->plt_type
== PLT_VXWORKS
8206 && htab
->elf
.dynamic_sections_created
8207 && h
->dynindx
!= -1)
8210 const bfd_vma
*plt_entry
;
8212 /* The first three entries in .got.plt are reserved. */
8213 got_offset
= (reloc_index
+ 3) * 4;
8215 /* Use the right PLT. */
8216 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
8217 : ppc_elf_vxworks_plt_entry
;
8219 /* Fill in the .plt on VxWorks. */
8222 bfd_put_32 (output_bfd
,
8223 plt_entry
[0] | PPC_HA (got_offset
),
8224 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
8225 bfd_put_32 (output_bfd
,
8226 plt_entry
[1] | PPC_LO (got_offset
),
8227 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
8231 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
8233 bfd_put_32 (output_bfd
,
8234 plt_entry
[0] | PPC_HA (got_loc
),
8235 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
8236 bfd_put_32 (output_bfd
,
8237 plt_entry
[1] | PPC_LO (got_loc
),
8238 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
8241 bfd_put_32 (output_bfd
, plt_entry
[2],
8242 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
8243 bfd_put_32 (output_bfd
, plt_entry
[3],
8244 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
8246 /* This instruction is an immediate load. The value loaded is
8247 the byte offset of the R_PPC_JMP_SLOT relocation from the
8248 start of the .rela.plt section. The value is stored in the
8249 low-order 16 bits of the load instruction. */
8250 /* NOTE: It appears that this is now an index rather than a
8251 prescaled offset. */
8252 bfd_put_32 (output_bfd
,
8253 plt_entry
[4] | reloc_index
,
8254 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
8255 /* This instruction is a PC-relative branch whose target is
8256 the start of the PLT section. The address of this branch
8257 instruction is 20 bytes beyond the start of this PLT entry.
8258 The address is encoded in bits 6-29, inclusive. The value
8259 stored is right-shifted by two bits, permitting a 26-bit
8261 bfd_put_32 (output_bfd
,
8263 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
8264 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
8265 bfd_put_32 (output_bfd
, plt_entry
[6],
8266 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
8267 bfd_put_32 (output_bfd
, plt_entry
[7],
8268 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
8270 /* Fill in the GOT entry corresponding to this PLT slot with
8271 the address immediately after the the "bctr" instruction
8272 in this PLT entry. */
8273 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
8274 + htab
->plt
->output_offset
8275 + ent
->plt
.offset
+ 16),
8276 htab
->sgotplt
->contents
+ got_offset
);
8280 /* Fill in a couple of entries in .rela.plt.unloaded. */
8281 loc
= htab
->srelplt2
->contents
8282 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
8283 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
8284 * sizeof (Elf32_External_Rela
));
8286 /* Provide the @ha relocation for the first instruction. */
8287 rela
.r_offset
= (htab
->plt
->output_section
->vma
8288 + htab
->plt
->output_offset
8289 + ent
->plt
.offset
+ 2);
8290 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
8292 rela
.r_addend
= got_offset
;
8293 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8294 loc
+= sizeof (Elf32_External_Rela
);
8296 /* Provide the @l relocation for the second instruction. */
8297 rela
.r_offset
= (htab
->plt
->output_section
->vma
8298 + htab
->plt
->output_offset
8299 + ent
->plt
.offset
+ 6);
8300 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
8302 rela
.r_addend
= got_offset
;
8303 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8304 loc
+= sizeof (Elf32_External_Rela
);
8306 /* Provide a relocation for the GOT entry corresponding to this
8307 PLT slot. Point it at the middle of the .plt entry. */
8308 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
8309 + htab
->sgotplt
->output_offset
8311 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
8313 rela
.r_addend
= ent
->plt
.offset
+ 16;
8314 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8317 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8318 In particular, the offset for the relocation is not the
8319 address of the PLT entry for this function, as specified
8320 by the ABI. Instead, the offset is set to the address of
8321 the GOT slot for this function. See EABI 4.4.4.1. */
8322 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
8323 + htab
->sgotplt
->output_offset
8329 asection
*splt
= htab
->plt
;
8330 if (!htab
->elf
.dynamic_sections_created
8331 || h
->dynindx
== -1)
8334 rela
.r_offset
= (splt
->output_section
->vma
8335 + splt
->output_offset
8337 if (htab
->plt_type
== PLT_OLD
8338 || !htab
->elf
.dynamic_sections_created
8339 || h
->dynindx
== -1)
8341 /* We don't need to fill in the .plt. The ppc dynamic
8342 linker will fill it in. */
8346 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
8347 + htab
->glink
->output_section
->vma
8348 + htab
->glink
->output_offset
);
8349 bfd_put_32 (output_bfd
, val
,
8350 splt
->contents
+ ent
->plt
.offset
);
8354 /* Fill in the entry in the .rela.plt section. */
8356 if (!htab
->elf
.dynamic_sections_created
8357 || h
->dynindx
== -1)
8359 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
8361 && (h
->root
.type
== bfd_link_hash_defined
8362 || h
->root
.type
== bfd_link_hash_defweak
));
8363 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8364 rela
.r_addend
= SYM_VAL (h
);
8367 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
8369 if (!htab
->elf
.dynamic_sections_created
8370 || h
->dynindx
== -1)
8371 loc
= (htab
->reliplt
->contents
8372 + (htab
->reliplt
->reloc_count
++
8373 * sizeof (Elf32_External_Rela
)));
8375 loc
= (htab
->relplt
->contents
8376 + reloc_index
* sizeof (Elf32_External_Rela
));
8377 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8379 if (!h
->def_regular
)
8381 /* Mark the symbol as undefined, rather than as
8382 defined in the .plt section. Leave the value if
8383 there were any relocations where pointer equality
8384 matters (this is a clue for the dynamic linker, to
8385 make function pointer comparisons work between an
8386 application and shared library), otherwise set it
8388 sym
->st_shndx
= SHN_UNDEF
;
8389 if (!h
->pointer_equality_needed
)
8391 else if (!h
->ref_regular_nonweak
)
8393 /* This breaks function pointer comparisons, but
8394 that is better than breaking tests for a NULL
8395 function pointer. */
8399 else if (h
->type
== STT_GNU_IFUNC
8402 /* Set the value of ifunc symbols in a non-pie
8403 executable to the glink entry. This is to avoid
8404 text relocations. We can't do this for ifunc in
8405 allocate_dynrelocs, as we do for normal dynamic
8406 function symbols with plt entries, because we need
8407 to keep the original value around for the ifunc
8409 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
8410 (output_bfd
, htab
->glink
->output_section
));
8411 sym
->st_value
= (ent
->glink_offset
8412 + htab
->glink
->output_offset
8413 + htab
->glink
->output_section
->vma
);
8418 if (htab
->plt_type
== PLT_NEW
8419 || !htab
->elf
.dynamic_sections_created
8420 || h
->dynindx
== -1)
8423 asection
*splt
= htab
->plt
;
8424 if (!htab
->elf
.dynamic_sections_created
8425 || h
->dynindx
== -1)
8428 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
8430 if (h
== htab
->tls_get_addr
&& !htab
->no_tls_get_addr_opt
)
8432 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
8434 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
8436 bfd_put_32 (output_bfd
, MR_0_3
, p
);
8438 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
8440 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
8442 bfd_put_32 (output_bfd
, BEQLR
, p
);
8444 bfd_put_32 (output_bfd
, MR_3_0
, p
);
8446 bfd_put_32 (output_bfd
, NOP
, p
);
8450 write_glink_stub (ent
, splt
, p
, info
);
8453 /* We only need one non-PIC glink stub. */
8463 Elf_Internal_Rela rela
;
8466 /* This symbols needs a copy reloc. Set it up. */
8469 fprintf (stderr
, ", copy");
8472 BFD_ASSERT (h
->dynindx
!= -1);
8474 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
8478 BFD_ASSERT (s
!= NULL
);
8480 rela
.r_offset
= SYM_VAL (h
);
8481 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
8483 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8484 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8488 fprintf (stderr
, "\n");
8491 /* Mark some specially defined symbols as absolute. */
8492 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
8493 || (!htab
->is_vxworks
8494 && (h
== htab
->elf
.hgot
8495 || strcmp (h
->root
.root
.string
,
8496 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8497 sym
->st_shndx
= SHN_ABS
;
8502 static enum elf_reloc_type_class
8503 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
8505 switch (ELF32_R_TYPE (rela
->r_info
))
8507 case R_PPC_RELATIVE
:
8508 return reloc_class_relative
;
8511 case R_PPC_JMP_SLOT
:
8512 return reloc_class_plt
;
8514 return reloc_class_copy
;
8516 return reloc_class_normal
;
8520 /* Finish up the dynamic sections. */
8523 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
8524 struct bfd_link_info
*info
)
8528 struct ppc_elf_link_hash_table
*htab
;
8531 bfd_boolean ret
= TRUE
;
8534 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
8537 htab
= ppc_elf_hash_table (info
);
8538 dynobj
= elf_hash_table (info
)->dynobj
;
8539 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8540 if (htab
->is_vxworks
)
8541 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8546 if (htab
->elf
.hgot
!= NULL
)
8547 got
= SYM_VAL (htab
->elf
.hgot
);
8549 if (htab
->elf
.dynamic_sections_created
)
8551 Elf32_External_Dyn
*dyncon
, *dynconend
;
8553 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
8555 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
8556 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
8557 for (; dyncon
< dynconend
; dyncon
++)
8559 Elf_Internal_Dyn dyn
;
8562 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8567 if (htab
->is_vxworks
)
8571 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8575 dyn
.d_un
.d_val
= htab
->relplt
->size
;
8580 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8584 dyn
.d_un
.d_ptr
= got
;
8588 if (htab
->is_vxworks
)
8591 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
8597 if (htab
->is_vxworks
8598 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
8603 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8607 if (htab
->got
!= NULL
)
8609 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
8610 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
8612 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
8614 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
8615 if (htab
->plt_type
== PLT_OLD
)
8617 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8618 so that a function can easily find the address of
8619 _GLOBAL_OFFSET_TABLE_. */
8620 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
8621 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
8622 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
8627 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
8628 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
8629 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
8630 bfd_put_32 (output_bfd
, val
, p
);
8635 info
->callbacks
->einfo (_("%s not defined in linker created %s\n"),
8636 htab
->elf
.hgot
->root
.root
.string
,
8637 (htab
->sgotplt
!= NULL
8638 ? htab
->sgotplt
->name
: htab
->got
->name
));
8639 bfd_set_error (bfd_error_bad_value
);
8643 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
8646 /* Fill in the first entry in the VxWorks procedure linkage table. */
8647 if (splt
&& splt
->size
> 0)
8649 /* Use the right PLT. */
8650 const bfd_vma
*plt_entry
= (info
->shared
8651 ? ppc_elf_vxworks_pic_plt0_entry
8652 : ppc_elf_vxworks_plt0_entry
);
8656 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
8658 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
8659 splt
->contents
+ 0);
8660 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
8661 splt
->contents
+ 4);
8665 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
8666 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
8668 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
8669 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
8670 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
8671 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
8672 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
8673 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
8677 Elf_Internal_Rela rela
;
8680 loc
= htab
->srelplt2
->contents
;
8682 /* Output the @ha relocation for the first instruction. */
8683 rela
.r_offset
= (htab
->plt
->output_section
->vma
8684 + htab
->plt
->output_offset
8686 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
8688 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8689 loc
+= sizeof (Elf32_External_Rela
);
8691 /* Output the @l relocation for the second instruction. */
8692 rela
.r_offset
= (htab
->plt
->output_section
->vma
8693 + htab
->plt
->output_offset
8695 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
8697 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8698 loc
+= sizeof (Elf32_External_Rela
);
8700 /* Fix up the remaining relocations. They may have the wrong
8701 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8702 in which symbols were output. */
8703 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
8705 Elf_Internal_Rela rel
;
8707 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8708 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
8709 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8710 loc
+= sizeof (Elf32_External_Rela
);
8712 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8713 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
8714 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8715 loc
+= sizeof (Elf32_External_Rela
);
8717 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8718 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
8719 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8720 loc
+= sizeof (Elf32_External_Rela
);
8725 if (htab
->glink
!= NULL
8726 && htab
->glink
->contents
!= NULL
8727 && htab
->elf
.dynamic_sections_created
)
8730 unsigned char *endp
;
8735 * PIC glink code is the following:
8737 * # ith PLT code stub.
8738 * addis 11,30,(plt+(i-1)*4-got)@ha
8739 * lwz 11,(plt+(i-1)*4-got)@l(11)
8743 * # A table of branches, one for each plt entry.
8744 * # The idea is that the plt call stub loads ctr and r11 with these
8745 * # addresses, so (r11 - res_0) gives the plt index * 4.
8746 * res_0: b PLTresolve
8747 * res_1: b PLTresolve
8749 * # Some number of entries towards the end can be nops
8755 * addis 11,11,(1f-res_0)@ha
8758 * 1: addi 11,11,(1b-res_0)@l
8761 * sub 11,11,12 # r11 = index * 4
8762 * addis 12,12,(got+4-1b)@ha
8763 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8764 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8767 * add 11,0,11 # r11 = index * 12 = reloc offset.
8770 static const unsigned int pic_plt_resolve
[] =
8791 * Non-PIC glink code is a little simpler.
8793 * # ith PLT code stub.
8794 * lis 11,(plt+(i-1)*4)@ha
8795 * lwz 11,(plt+(i-1)*4)@l(11)
8799 * The branch table is the same, then comes
8803 * addis 11,11,(-res_0)@ha
8804 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8805 * addi 11,11,(-res_0)@l # r11 = index * 4
8808 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8809 * add 11,0,11 # r11 = index * 12 = reloc offset.
8812 static const unsigned int plt_resolve
[] =
8832 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
8834 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
8837 /* Build the branch table, one for each plt entry (less one),
8838 and perhaps some padding. */
8839 p
= htab
->glink
->contents
;
8840 p
+= htab
->glink_pltresolve
;
8841 endp
= htab
->glink
->contents
;
8842 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
8843 while (p
< endp
- 8 * 4)
8845 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
8850 bfd_put_32 (output_bfd
, NOP
, p
);
8854 res0
= (htab
->glink_pltresolve
8855 + htab
->glink
->output_section
->vma
8856 + htab
->glink
->output_offset
);
8858 /* Last comes the PLTresolve stub. */
8863 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
8865 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
8868 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
8870 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
8871 + htab
->glink
->output_section
->vma
8872 + htab
->glink
->output_offset
);
8874 bfd_put_32 (output_bfd
,
8875 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
8876 bfd_put_32 (output_bfd
,
8877 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
8878 bfd_put_32 (output_bfd
,
8879 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
8880 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
8882 bfd_put_32 (output_bfd
,
8883 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8884 bfd_put_32 (output_bfd
,
8885 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
8889 bfd_put_32 (output_bfd
,
8890 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8891 bfd_put_32 (output_bfd
,
8892 LWZ_12_12
+ 4, p
+ 9*4);
8897 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
8899 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
8902 p
-= 4 * ARRAY_SIZE (plt_resolve
);
8904 bfd_put_32 (output_bfd
,
8905 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
8906 bfd_put_32 (output_bfd
,
8907 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
8908 bfd_put_32 (output_bfd
,
8909 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
8910 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
8912 bfd_put_32 (output_bfd
,
8913 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8914 bfd_put_32 (output_bfd
,
8915 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
8919 bfd_put_32 (output_bfd
,
8920 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8921 bfd_put_32 (output_bfd
,
8922 LWZ_12_12
+ 4, p
+ 6*4);
8930 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8931 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8932 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8933 #define TARGET_BIG_NAME "elf32-powerpc"
8934 #define ELF_ARCH bfd_arch_powerpc
8935 #define ELF_TARGET_ID PPC32_ELF_DATA
8936 #define ELF_MACHINE_CODE EM_PPC
8937 #ifdef __QNXTARGET__
8938 #define ELF_MAXPAGESIZE 0x1000
8940 #define ELF_MAXPAGESIZE 0x10000
8942 #define ELF_MINPAGESIZE 0x1000
8943 #define ELF_COMMONPAGESIZE 0x1000
8944 #define elf_info_to_howto ppc_elf_info_to_howto
8946 #ifdef EM_CYGNUS_POWERPC
8947 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8951 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8954 #define elf_backend_plt_not_loaded 1
8955 #define elf_backend_can_gc_sections 1
8956 #define elf_backend_can_refcount 1
8957 #define elf_backend_rela_normal 1
8959 #define bfd_elf32_mkobject ppc_elf_mkobject
8960 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8961 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8962 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8963 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8964 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8965 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8966 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8968 #define elf_backend_object_p ppc_elf_object_p
8969 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8970 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8971 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8972 #define elf_backend_relocate_section ppc_elf_relocate_section
8973 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8974 #define elf_backend_check_relocs ppc_elf_check_relocs
8975 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8976 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8977 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8978 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8979 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8980 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8981 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8982 #define elf_backend_fake_sections ppc_elf_fake_sections
8983 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8984 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8985 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8986 #define elf_backend_write_core_note ppc_elf_write_core_note
8987 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8988 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8989 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8990 #define elf_backend_write_section ppc_elf_write_section
8991 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8992 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8993 #define elf_backend_action_discarded ppc_elf_action_discarded
8994 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8995 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8997 #include "elf32-target.h"
8999 /* VxWorks Target */
9001 #undef TARGET_LITTLE_SYM
9002 #undef TARGET_LITTLE_NAME
9004 #undef TARGET_BIG_SYM
9005 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9006 #undef TARGET_BIG_NAME
9007 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9009 /* VxWorks uses the elf default section flags for .plt. */
9010 static const struct bfd_elf_special_section
*
9011 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
9013 if (sec
->name
== NULL
)
9016 if (strcmp (sec
->name
, ".plt") == 0)
9017 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
9019 return ppc_elf_get_sec_type_attr (abfd
, sec
);
9022 /* Like ppc_elf_link_hash_table_create, but overrides
9023 appropriately for VxWorks. */
9024 static struct bfd_link_hash_table
*
9025 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
9027 struct bfd_link_hash_table
*ret
;
9029 ret
= ppc_elf_link_hash_table_create (abfd
);
9032 struct ppc_elf_link_hash_table
*htab
9033 = (struct ppc_elf_link_hash_table
*)ret
;
9034 htab
->is_vxworks
= 1;
9035 htab
->plt_type
= PLT_VXWORKS
;
9036 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
9037 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
9038 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
9043 /* Tweak magic VxWorks symbols as they are loaded. */
9045 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
9046 struct bfd_link_info
*info
,
9047 Elf_Internal_Sym
*sym
,
9048 const char **namep ATTRIBUTE_UNUSED
,
9049 flagword
*flagsp ATTRIBUTE_UNUSED
,
9053 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
9057 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
9061 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
9063 ppc_elf_final_write_processing(abfd
, linker
);
9064 elf_vxworks_final_write_processing(abfd
, linker
);
9067 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9069 #undef elf_backend_want_plt_sym
9070 #define elf_backend_want_plt_sym 1
9071 #undef elf_backend_want_got_plt
9072 #define elf_backend_want_got_plt 1
9073 #undef elf_backend_got_symbol_offset
9074 #define elf_backend_got_symbol_offset 0
9075 #undef elf_backend_plt_not_loaded
9076 #define elf_backend_plt_not_loaded 0
9077 #undef elf_backend_plt_readonly
9078 #define elf_backend_plt_readonly 1
9079 #undef elf_backend_got_header_size
9080 #define elf_backend_got_header_size 12
9082 #undef bfd_elf32_get_synthetic_symtab
9084 #undef bfd_elf32_bfd_link_hash_table_create
9085 #define bfd_elf32_bfd_link_hash_table_create \
9086 ppc_elf_vxworks_link_hash_table_create
9087 #undef elf_backend_add_symbol_hook
9088 #define elf_backend_add_symbol_hook \
9089 ppc_elf_vxworks_add_symbol_hook
9090 #undef elf_backend_link_output_symbol_hook
9091 #define elf_backend_link_output_symbol_hook \
9092 elf_vxworks_link_output_symbol_hook
9093 #undef elf_backend_final_write_processing
9094 #define elf_backend_final_write_processing \
9095 ppc_elf_vxworks_final_write_processing
9096 #undef elf_backend_get_sec_type_attr
9097 #define elf_backend_get_sec_type_attr \
9098 ppc_elf_vxworks_get_sec_type_attr
9099 #undef elf_backend_emit_relocs
9100 #define elf_backend_emit_relocs \
9101 elf_vxworks_emit_relocs
9104 #define elf32_bed ppc_elf_vxworks_bed
9105 #undef elf_backend_post_process_headers
9107 #include "elf32-target.h"